650-RICR-20-05-8
650-RICR-20-05-8. RICRMP: Ocean SAMP - Chapter 8 - Renewable Energy and Other Offshore Development (version Amendment, 06/02/2018 to 01/04/2022)
8.1 Authority
A. As authorized by the
federal Coastal Zone Management Act of 1972 (16 U.S.C. §§ 1451
through 1466) and R.I. Gen. Laws Chapter 46-23 the Coastal Resources
Management Council may implement special area management plans.
B. The regulations herein
constitute a RICR regulatory component of the Ocean Special Area
Management Plan (SAMP) Chapter 8 - Renewable Energy and Other
Offshore Development, and must be read in conjunction with the other
RICR regulatory components and chapters of the Ocean SAMP for the
full context and understanding of the CRMC’s findings and policies
that form the basis and purpose of these regulations. The other RICR
regulatory components and chapters of the Ocean SAMP should be
employed in interpreting the regulations herein and R.I. Gen. Laws §
46-23-1, et seq .
8.2 Purpose
The purpose of these rules is
to carry out the responsibilities of the Coastal Resources Management
Council in establishing the Ocean Special Area Management Plan (SAMP)
for the offshore waters (beyond 3 nautical mile state water boundary)
within the geographic location description (GLD) and to provide the
regulatory framework for promoting a balanced and comprehensive
ecosystem-based management approach to the development and protection
of Rhode Island’s ocean-based resources. In addition, these rules
establish the regulatory standards and enforceable policies within
the GLD for purposes of the federal Coastal Zone Management Act
federal consistency provisions pursuant to 16 U.S.C. § 1456 and 15
C.F.R. Part 930.
8.3 Definitions
A. “Area of potential
effect” or “APE” means the areas within which a project may
directly or indirectly alter the character or use of historic
properties as defined under the federal National Historic
Preservation Act (36 C.F.R. §§ 800.1 through 800.16).
B. “Certified verification
agent” or “CVA” means an independent third-party agent that
shall use good engineering judgment and practices in conducting an
independent assessment of the design, fabrication and installation of
the facility.
C. “Construction and
operations plan” or “COP” means a plan that describes the
applicant’s construction, operations, and conceptual
decommissioning plans for a proposed facility, including the
applicant’s project easement area.
D. “Ecosystem based
management” or “EMB” means an integrated approach to management
that considers the entire ecosystem, including humans. The goal of
EBM is to maintain an ecosystem in a healthy, productive and
resilient condition that provides the services humans want and need.
E. “Enforceable policy”
means State policies which are legally binding through constitutional
provisions, laws, regulations, land use plans, ordinances, or
judicial or administrative decisions, by which a State exerts control
over private and public land and water uses and natural resources in
the coastal zone.
F. “Geographic location
description” or “GLD” means a geographic area in federal
waters, consistent with the Ocean SAMP study area, where certain
federal agency activities, licenses, and permit activities pursuant
to 15 C.F.R. Part 930 Subparts D and E will be subject to Rhode
Island review under the Coastal Zone Management Act (CZMA) federal
consistency provisions.
G. “Large-scale offshore
developments” means:
1. offshore wind facilities (5
or more turbines within 2 km of each other, or 18 MW power
generation);
2. wave generation devices (2
or more devices, or 18 MW power generation);
3. instream tidal or ocean
current devices (2 or more devices, or 18 MW power generation);
4. offshore LNG platforms (1
or more);
5. artificial reefs (1/2 acre
footprint and at least 4 feet high); and
6. outer continental shelf
(OCS) exploration, development, and production plans, except for
projects of a public nature whose primary purpose is habitat
enhancement.
H. “Marine spatial planning”
or “MSP” means the process by which ecosystem-based management is
organized to produce desired outcomes in marine environments.
I. “Site assessment plan”
or “SAP” means a pre-application plan that describes the
activities and studies the applicant plans to perform for the
characterization of the project site.
8.4 Potential Effects on Existing
Uses and Resources in the Ocean SAMP Area (formerly § 850)
A. Offshore renewable energy
may potentially affect the natural resources and existing human uses
of the Ocean SAMP area. Some effects may be negative, resulting in
adverse impacts on these resources and uses. Alternatively, other
effects may be neutral, producing no discernible impacts, while
others may be positive, resulting in enhancements to the environment
or to offshore human uses. The degree to which offshore renewable
energy structures may affect the natural environment or human
activities in the area varies in large part on the specific siting of
a project. Careful consideration when planning the location of an
offshore renewable energy facility, as well as the use of appropriate
mitigation strategies during the construction, operation and
decommissioning stages can minimize any potential negative impacts
(MMS 2007a).
B. To date, most research on
the potential effects of offshore renewable energy installations has
been conducted in Europe, though some research has been conducted
during the review of the proposed offshore wind farm project in
Nantucket Sound by Cape Wind, LLC (MMS 2009a; U.S. Coast Guard 2009;
Technology Service Corporation 2008). In anticipation of future
offshore renewable energy development within the U.S., BOEM has
identified potential impacts and enhancements of such development on
marine transportation, navigation and infrastructure in the
“Programmatic Environmental Impact Statement for Alternative Energy
Development and Production” (PEIS) (MMS 2007a). These sources, as
well as other scientific literature and relevant reports have
informed this synthesis of the potential effects on existing
resources and uses in the Ocean SAMP area. Where possible, research
conducted as a part of the Ocean SAMP process has been incorporated
to help further assess the potential for effects within the Ocean
SAMP study area.
C. As presented in § 810.3,
offshore wind energy currently represents the greatest potential for
utility-scale offshore renewable energy in the Ocean SAMP area. For
that reason, the focus of this section is mainly on the potential
effects from the development of offshore wind energy facilities.
However, many of the potential effects discussed may be similar
across all forms of offshore renewable energy development and
offshore marine construction in general.
D. While this section is meant
to provide a summary of all potential effects of offshore renewable
energy development, the potential effects of a particular project
will be thoroughly examined as part of the review conducted under the
National Environmental Policy Act (NEPA). The review process
includes: an analysis of alternatives, an assessment of all
environmental, social, and existing use impacts (i.e. ecological,
navigational, economic, community-related, etc.), a review for
regulatory consistency with other applicable federal laws and the
implementation of mitigation measures. See § 820.4 and Chapter 10,
Existing Statutes, Regulations, and Policies for more information on
the NEPA review process, as well as other state and federal reviews
and regulations relevant to offshore wind energy development.
E. This section begins with an
examination of the potential effects of offshore renewable energy
development on the physical environment through a discussion of the
potential for avoided air emissions and the potential effects on
coastal processes. Next, the potential effects of offshore renewable
energy development on the ecological resources, including the benthic
ecology, avian species, sea turtles, marine mammals and fish.
Potential effects to human uses are then examined through a
discussion of cultural and historic resources, commercial and
recreational fishing activities, recreation and tourism and lastly
marine transportation, navigation and infrastructure. The final
section considers the potential cumulative effects of offshore
renewable energy development.
8.4.1 Avoided Air Emissions
(formerly § 850.1)
A. The development of an
offshore wind farm or any other offshore renewable energy project
would have implications for air emissions within the state. While the
development of a project will produce some air emissions (especially
during the construction stage), a renewable energy project, by not
burning fossil fuels, will produce far fewer emissions of carbon
dioxide and conventional air pollutants. This section summarizes the
effects of air emissions produced and avoided by the development of
an offshore renewable energy project.
B. Air emissions produced
during conventional fossil fuel energy production include carbon
dioxide, sulfur dioxide, nitrogen oxides, volatile organic compounds,
particulate matter, and carbon monoxide. These pollutants have been
demonstrated to have detrimental impacts to human health and the
environment. Exposure to poor air quality is a major health risk and
health cost in the United States. Smog and particle pollution are the
cause of decreased lung function, respiratory illness, cardiovascular
disease, increased risk of asthma, and the risk of premature death
(U.S. Department of Energy 2008). The largest sources of sulfur
dioxide emissions are from fossil fuel combustion at power plants;
sulfur dioxide has been linked to respiratory illnesses and is a
major contributor to acid rain (U.S. EPA Office of Air and Radiation
2009). Nitrogen oxides combine with volatile organic compounds (VOCs)
to form ozone, a major component of smog. Ozone can cause a number of
respiratory problems in humans, and can also have detrimental effects
on plants and ecosystems, including acid rain. Additionally, nitrogen
dioxide has also been shown to cause adverse respiratory effects
(U.S. EPA Office of Air and Radiation 2009). The effects of carbon
dioxide emissions, the major contributor to global climate change,
are discussed in further detail in Chapter 3, Global Climate Change.
C. The process of siting,
constructing, and decommissioning an offshore renewable energy
project of any kind would entail some adverse impacts to air quality
through the emission of carbon dioxide and conventional pollutants.
Construction activity in the offshore environment would require the
use of fossil fuel-powered equipment that will result in a certain
level of air emissions from activities including pile installation,
scour protection installation, cable laying, support structure and
turbine installation, and other activities required for the
development of a wind farm. During the pre-construction and
installation stages, there would be some air emissions in the Ocean
SAMP area from fossil fuel fired mobile sources such as ships,
cranes, pile drivers and other equipment. Decommissioning would also
result in some air emissions from the activities involved in the
removal of the wind turbines, although emissions from decommissioning
would be lower than those involved in construction (MMS 2009a). The
size of an offshore renewable energy facility’s carbon footprint
will vary depending on the project, as the carbon footprint of a
facility depends on project specific factors (e.g. size, location,
technology, installation techniques, etc.) Any calculation of carbon
footprint would include the pre-construction, construction,
operation, and decommissioning phases of a project.
D. When considering the
benefits of wind power displacing electricity generated from fossil
fuels, the carbon dioxide (CO2) emissions of manufacturing wind
turbines and building wind plants need to be taken into account as
well. White and Kulsinski (1998) found that when these emissions are
analyzed on a life-cycle basis, wind energy’s CO2 emissions are
extremely low—about 1% of those from coal and 2% of those from
natural gas, per unit of electricity generated. The American Wind
Energy Association has calculated that a single 1 MW wind turbine
(operating at full capacity for one year) has the potential to
displace up to 1,800 tons (1633 MT) of CO2 per year compared with the
current U.S. average utility fuel mix (made up of oil, gas, and coal)
burned to produce the same amount of energy (AWEA 2009). The
generation of renewable wind energy will result in avoided future
emissions of CO2 and will allow Rhode Island to meet targets set by
the Regional Greenhouse Gas Initiative (RGGI) (See § 810.1).
E. Developing offshore
renewable energy sources in the form of wind turbines would have a
positive impact on air emissions by displacing future air emissions
caused by generating electricity. The level of avoided air emissions,
and the net impact from renewable energy, will be dependent upon the
future demands for electricity in Rhode Island, and the proportion of
this which can be met by offshore wind farms and other renewable
energy sources. At the very least, an offshore wind farm would have
the effect of reducing the need for adding capacity for fossil-fuel
generating plants in Rhode Island and throughout New England. At
present, roughly 99% of the energy generated within Rhode Island
comes from combined cycle natural gas, which is considered a marginal
generator, in that it provides variable output which can easily be
adjusted to meet demand (ISO New England Inc. 2009c). NOx is the
principal pollutant of concern for gas fired energy generation (MMS
2009a). Much of the electricity used within Rhode Island comes from
the Brayton Point Power Station in Somerset, MA, the largest
fossil-fueled generating facility in New England. The Brayton Point
Power Station has three units that use coal and one that uses either
natural gas or oil, for a combined output of over 1500 MW (Dominion
2010). The additional energy production from wind turbines would be
more likely to result in avoided air emissions from natural gas
plants, which are marginal and would produce less energy in the event
demand was lowered because of the additional output of wind turbines.
Wind energy is also a marginal source, because wind speeds and thus
energy output varies. The Brayton Point Power Station, which because
of its reliance on coal is mostly a baseload generator, or one that
does not change short term output depending on demand (because of the
difficulties in doing so), would likely continue to produce energy at
the same rate. Thus air emissions from this plant would not be
avoided, at least in the short term.
F. A second important benefit
of switching to a zero-emission energy generation technology like
wind power is impact on air quality through reduced levels of
nitrogen oxides, sulfur dioxide, and mercury emitted in electrical
energy generation using fossil fuels. The Cape Wind FEIS determined
that a wind farm would result in the net reduction in emissions of
NOx, a precursor of ozone, although only a slight reduction because
of the levels of NOx still being produced by power sources elsewhere
(MMS 2009a). The emissions of sulfur dioxide and nitrogen oxides have
declined significantly since the early 1990s (ISO New England Inc.
2009c). However, there still may be a benefit in terms of avoided
future increases in emissions of NOx and other pollutants if a
project can meet increasing future energy demands. A reduction in
these pollutants will have positive health effects for residents of
the state of Rhode Island from the perspective of avoiding future
respiratory illnesses.
8.4.2 Coastal Processes and
Physical Oceanography (formerly § 850.2)
A. The following section
summarizes the general potential effects of a renewable energy
project on coastal processes and physical oceanography in the Ocean
SAMP area. The introduction of a number of large structures into the
water column may have an effect on coastal processes such as
currents, waves, and sediment transport. The potential effects to
coastal processes as a result of offshore renewable energy
development are dependent on the size, scale and design of the
facility, as well as site specific conditions (i.e., localized
currents, wave regimes and sediment transport). As a result, the
potential effects will vary between projects and may even vary
between different parts of a project site.
B. The potential effect of
offshore renewable energy structures in the water column on currents
and tides have been examined using modeling techniques. Modeling of
the proposed Cape Wind project found that the turbines would be
spaced far enough apart to prevent any wake effect between piles; any
effects would be localized around each pile (MMS 2009a). The analysis
of Cape Wind demonstrated that the flow around the monopiles (which
range in diameter from 3.6-5.5 m [11.8-18.0 feet] wide) would return
to 99% of its original flow rate within a distance of 4 pile
diameters (approximately 14.4-22 m [47.2-72.2 feet]) from the support
structure (ASA 2005). Both of these studies, however, are
representative of monopile wind turbine subsurface structure and may
not be directly applicable to jacket-style foundations. The potential
localized effects of lattice jacket structures on the hydrodynamics
are likely to be even less compared to that found with monopiles as
pile diameters for lattice jackets are much smaller (1.5 m [4.9
feet]) than monopiles (4-5 m [13-16.5 feet] diameter). Furthermore,
the spacing between the turbines using lattice jacket support
structures will be much greater than the 4 pile diameters. However,
the effects of currents may be site-specific, as there could be
localized currents or other conditions that could affect or be
affected by the presence of wind turbines; site specific modeling may
be necessary to determine impacts.
C. One predicted potential
effect of wind turbines has been changes to the wave field from
diffraction caused by the monopiles, and resulting changes to
longshore sediment transport (CEFAS 2005). A study of the wave
effects at Scroby Bank, located in the North Sea off the U.K., found
no significant effects to the wave regime (CEFAS 2005). Modeling of
the effects of wind farms on waves found a reduction in wave height
on average of 1.5% in the region, and maximum localized amplification
of wave heights at the site of the wind farm of about 0.0158 m (0.6
inches). As the modeled wind farm was moved further from shore, the
wave height amplification decreased (ABP Marine Environmental
Research Ltd 2002). Modeling for the Cape Wind project found that the
largest wave diffraction occurred for small waves with low bottom
velocities that did not cause significant sediment transport; larger
waves were not affected by the presence of the turbines. Overall, the
models found that the presence of turbines would have a negligible
impact on wave conditions in the area (MMS 2009a). Because there are
no significant changes predicted for tides and waves, there are not
expected to be significant effects to sediment movement or deposition
along the coastline (ABP Marine Environmental Research Ltd 2002).
D. Preliminary scaling
estimates for the cumulative generation of water column turbulence
due to wakes behind subsurface pilings, using parameters applicable
to Ocean SAMP waters and a 100-turbine wind power generation field,
suggests their influence on vertical mixing could be comparable to
that due to bottom friction (Codiga and Ullman 2010c). The known
persistence of stratification in much of the Ocean SAMP region during
summertime suggests that bottom friction is relatively weak, and thus
the effects of platform pilings are not expected to produce major,
large scale changes in water column stratification. However,
additional research is needed to address the extent to which the
spatial patterns and seasonal cycle of stratification in Ocean SAMP
waters could potentially be altered by the presence of arrays of
various types (pilings, lattice jackets, etc.) of subsurface
structures as infrastructure for renewable energy generation devices.
E. The turbine foundations may
increase turbulence and disrupt flow around the structures,
potentially causing local erosion around the structures, or “scour”.
This process is caused by the orbital motion of water produced by
waves and currents, and the vortices that result as the water flows
around the pile of a wind turbine or another structure (MMS 2009a).
Scour often results in the erosion of the sediments supporting the
structure as they are transported elsewhere, forming a hole at the
base. Scour can also affect sediments in areas between structures
where multiple structures are present, also known as “global
scour”. However, because of the distances required between
turbines, it has often been assumed that global scour will be limited
(MMS 2007b). In addition, the use of scour protection such as
boulders, grout bags or grass mattresses may be used to minimize the
effects if scouring on the seafloor (MMS 2007a).
F. The seabed disturbance
during construction and from scour may result in changes to sediment
grain size. Smaller grains may be transported if suspended during
disturbance, leaving only grains too large to be transported to
remain. This could affect the structure of the benthic habitat and
its associated community (MMS 2007b).
G. The placement of submarine
cables will have limited and localized effects on seafloor sediments.
Jet plowing, the method most likely to be used in the Ocean SAMP
area, will likely result in the resuspension of bottom sediments into
the water column. Heavier particles will settle in the immediate area
of the activity, but finer particles are likely to travel from the
disturbed area. These effects will be relatively small and
short-term, however. Modeling of sedimentation during the cable
laying process for the Cape Wind project found that sediment would
settle within a few hundred yards of the cable route (MMS 2009a). In
some cases, where suspended sediment levels are already high in the
vicinity because of storms, areas of mobile surface sediment, or
fishing activities such as trawling, the additional increase in
sediments from cable-laying will probably not be significant. Once it
is buried, the cable will not likely have any significant effect on
sediments as long as it remains buried (ABP Marine Environmental
Research Ltd 2002). If the cable becomes exposed, increased flow
could occur above the cable, resulting in localized sediment scour
(MMS 2009a).
H. The cable laying process
would form a seabed scar from where the jet plow passed over. In some
areas the scar may recover naturally, over a period of days to months
or years depending on local tidal, current, and sediment conditions
at various points along the cable route (MMS 2009a). However,
depending on extent and depth of scars and the site specific
conditions, areas which may not recover naturally may require the
bathymetry to be restored to minimize impacts.
I. Studies on the effects of
radiated heat from buried cables have found a rise in temperature
directly above the cables of 0.19ºC [0.342 ºF] and an increase in
the temperature of seawater of 0.000006ºC [0.0000108 ºF]. This is
not believed to be significant enough to be detectable against
natural fluctuations (MMS 2009a).
J. Overall, it is unlikely
that wind farms will have a significant effect on wave, current, and
sediment processes overall, with only small effects within the areas
of the wind farms. The further to sea the wind farm is located, and
the deeper water it is in, the lesser the effects to coastal
processes are likely to be (ABP Marine Environmental Research Ltd
2002).
8.4.3 Benthic Ecology
(formerly § 850.3)
A. Offshore renewable energy
development in the Ocean SAMP area, especially offshore wind energy
development, may potentially affect the benthic ecology of a project
site by: disturbing benthic habitat during construction activities;
introducing hard substrate that may be colonized and produce reef
effects, or alter community composition; generate noise or
electromagnetic fields that may affect benthic species; or impacting
the water quality of an area during the installation or operation of
a facility. This section summarizes the general potential effects of
a renewable energy project on the Ocean SAMP area’s benthic
ecosystem; potential effects of these phenomena on species groups
(e.g., birds, marine mammals, and finfish) are detailed below in
separate sections.
B. Undoubtedly, the
construction of large, offshore structures will result in effects to
coastal processes and to benthic habitats and species, at least in
the immediate vicinity of the turbine installation. However, it may
be a challenge to accurately assess changes in the benthic ecology of
the Ocean SAMP area unless a good baseline is established. Studies of
European offshore renewable energy projects, the PEIS (MMS 2007a) and
the Cape Wind FEIS (MMS 2009a) provide some insight into the range of
potential ecological effects offshore wind energy development, though
the specific effects produced within the Ocean SAMP area will vary
depending on site specific conditions and the size and design of the
proposed project.
C. Benthic habitat disturbance
(formerly § 850.3.1)
1. The PEIS indicates that
habitat disturbance may result through the construction of offshore
renewable energy infrastructure (MMS 2007a). Here, habitat
disturbance is used broadly to refer to sediment disturbance and
settling; increased turbidity of the waters in the construction area;
and the alteration or loss of habitat from installation of
infrastructure including piles, anti-scour devices, and other
structures.
2. Sediment disturbance caused
by the installation of foundations or underwater transmission cables
may result in the smothering of some benthic organisms as suspended
sediments resettle onto the seafloor (MMS 2007a). Smothering would
primarily affect benthic invertebrates as most finfish and mobile
shellfish would move to nearby areas to avoid the construction site
(MMS 2007a). The eggs and larvae of fish and other species may be
particularly susceptible to burying (Gill 2005). Smaller organisms
are more likely to be affected than larger ones, as larger organisms
can extend feeding and respiratory organs above the sediment (BERR
2008). Sediment also has the potential to affect the filtering
mechanisms of certain species through clogging of gills or damaging
feeding structures; however, most species in the marine environment
likely have some degree of tolerance to sediment and this effect is
likely to be minimal (BERR 2008). In the Ocean SAMP area, species
that may be impacted by the settling of sediments include eastern
oysters (Crassostrea virginica) and northern quahogs (Mercenaria
mercenaria), among others, resulting in mortality or impacts to
reproduction and growth (MMS 2009a).
3. In addition to the
disturbance of sediments, construction of the foundation substructure
and the installation of cables may result in increased turbidity in
the water column. This may in turn affect primary production of
phytoplankton and the food chain; however, these effects are likely
to be short-term and localized, as sediments will likely settle out
after a few hours or be flushed away by tidal processes (MMS 2009a).
Increased turbidity in a project area is generally temporary and will
subside once construction has been completed (Johnson et al .
2008). Sediment suspension times will vary according to particle size
and currents. In Nantucket Sound, sediments were predicted to remain
suspended for two to eighteen hours, and the amount of sediment
suspended would be minimal compared with normal sediment transport
within the region due to typical tidal and current conditions (MMS
2009a). This may impact the abundance of planktonic species by
decreasing the availability of light in the water column. Sediment
suspended during the construction or decommissioning activities and
transported by local currents may result in impacts to neighboring
habitats, perhaps posing a temporary risk of smothering to nearby
benthic species. Sediment transport in the Ocean SAMP area will need
to be further modeled to predict the potential effects to turbidity
from construction of offshore wind turbines.
4. Habitat conversion and loss
may result from the physical occupation of the substrate by
foundation structures or scour protection devices. Steel foundations
and scour protection devices, which may be made up of rock or
concrete mattresses, may modify existing habitat, or create of new
habitat for colonization (Johnson et al . 2008). The direct
effects of these hard structures to the seabed are likely to be
limited to within one or two hundred meters of the turbine (OSPAR
2006). Additionally, cables will need to be installed between
turbines, and this will require temporarily disturbing the sediment
between the turbines. The total area of seabed disturbed by wind
turbine foundations is relatively small compared to the total
facility footprint. The scour protection suggested for the Cape Wind
project around each monopile vary depending on the pile and the
location, though the total scour protection area of 47.82 acres (0.19
square kilometers). Compared to the total footprint of the Cape Wind
project (64 km2 or 15,800 acres), the area affected by scour
protection equals only 0.3% (MMS 2009a).
5. In addition to physically
changing benthic habitat, the placement of wind turbines, especially
in large arrays, may alter tidal current patterns around the
structures (see § 8.4.2 of this Part, Coastal Processes and Physical
Oceanography), which may affect the distribution of eggs and larvae
(Johnson et al. 2008). However, a study of turbines in Danish waters
found little to no impact on native benthic communities and sediment
structure from a change in hydrodynamic regimes (DONG Energy et
al . 2006). Studies conducted at wind farms in the North Sea did
not find significant changes in the benthic community structure that
could be related to changes in the hydrodynamics as a result of the
placement of in-water wind turbine structures (DONG Energy et al .
2006). See Chapter 2, Ecology of the SAMP Region for more information
on physical oceanography and primary production in the Ocean SAMP
area.
6. The installation and burial
of submarine cables can cause temporary habitat destruction through
plowing trenches for cable placement, and may cause permanent habitat
alteration if the top layers of sediment are replaced with new
material during the cable-laying process, or if the cables are not
sufficiently buried within the substrate. Likewise, cable repair or
decommissioning can impact benthic habitats. The effect of the cables
will depend on the grain size of sediments, hydrodynamics and
turbidity of the area, and on the species and habitats present where
the cable is being laid. Cables are usually buried in trenches 2 m
(6.6 feet) wide and up to 3 m (9.8 feet) in depth (OSPAR 2008).
Disturbance to the seabed during cable-laying may also result from
anchor and chain damage from the installation barge, as the barge
will have to repeatedly anchor along the length of the cable route
(MMS 2007b). In addition, sediments disturbed in the cable-laying
process may contain contaminants, and these may be dispersed in the
process. However, most contaminated sediments are likely to be found
close to the coast, unless the cable route passes close to a disposal
site (BERR 2008).
7. In many cases, the seabed
is expected to return to its pre-disturbance state after cable
installation. The extent of the impacts from cable laying may depend
on the amount of time it takes for the natural bathymetry to recover.
Post-construction monitoring may be used to track the recovery of a
project site. On rock or other hard substrates where the seabed may
not recover easily, backfilling may be required, or else permanent
scarring of the seabed may result. Scars along the bottom may impact
migration for benthic animals. Species found in rock habitats tend to
be sessile (permanently attached to a substrate), either encrusting
or otherwise attached to the rock, and are therefore more susceptible
to disturbance (BERR 2008). Clay, sand, and gravel habitats are
typically less affected. Undersea cables can also cause damage to
benthic habitat if allowed to “sweep” along the bottom while
being placed in the correct location (Johnson et al . 2008).
Initial re-colonization of the site by benthic invertebrates takes
place rapidly, sometimes within a couple of months (BERR 2008). In
deeper waters, where disturbance of the seabed occurs with less
frequency, recovery to a stable benthic community can take longer
than in shallow waters, sometimes years. Generally, the effect on the
benthic ecology will not be significant if the cabling is done in
areas where the habitat is homogenous. However, if the cabling
activity takes place in areas of habitat that are rare or
particularly subject to disturbance, the effects could be greater
(BERR 2008). The most serious threats are to submerged aquatic
vegetation, which serves as an important habitat for a wide variety
of marine species. Shellfish beds and hard-bottom habitats are also
especially at risk (Johnson et al . 2008). Shellfish in
particular are usually not highly mobile, and cannot relocate during
the cable-laying process. Biogenic reefs made up of mussels or other
shellfish may become destabilized if plowing for cable-laying damages
the reefs (BERR 2008).
8. The magnitude of the
habitat disturbance effects depends on the duration and intensity of
the disturbance, and on the resilience of species living within the
sediment (Gill 2005). The expected effects are a local loss of
sedentary fauna living in the substrate, with mobile bottom-dwellers
being displaced from the area (Gill 2005). During the construction
and decommissioning phases of a project, the eggs and larvae of many
fish species may be vulnerable to being buried or removed. After the
activity has ceased, recolonization may take months or years (Gill
2005). Studies conducted on Danish wind farms found the effects on
benthic communities from burial by sediment were minimal when
monopiles were used, and the effects were both temporary and had
limited spatial distribution. Effects to the benthic community were
limited primarily to the area immediately surrounding the pile
driving activity (DONG Energy et al . 2006). Studies of the
effects of sediment displacement from cable laying found macro algae
and benthic infauna were still recovering two years after the
activity had ceased (DONG Energy et al . 2006).
9. The recovery period, or the
time required for an area disturbed by construction related
activities to return to its pre-construction state, will vary between
sites. For example, research on the effects of trawling on the seabed
have found that benthic communities in habitats already subject to
high levels of natural disturbance will be less affected by trawling
disturbance than more stable communities (Hiddink et al .
2006). Typically, habitats such as coarse sands are in general more
dynamic in nature and therefore recover more rapidly after
disturbance than more stable habitat types where physical and
biological recovery is slow (Dernie et al . 2003). Disturbance
from the construction of wind turbine towers and laying cable is
likely to produce similar results. A few studies of dredging found
that recovery times are roughly six to eight months for estuarine
muds, two to three years for sand and gravel bottoms, and up to five
to ten years for coarser substrates (e.g. Newell et al . 1998).
10. See below for the
potential effects of benthic habitat disturbance on Ocean SAMP area
species including birds, sea turtles, marine mammals, and fisheries
resources.
D. Reef effects (formerly §
850.3.2)
1. Offshore renewable energy
development, especially offshore wind development, will result in the
presence of man-made structures in the water column and on the
seafloor. These hard structures, such as the foundation structures
and scour protection devices, will introduce new habitat into the
area that did not previously exist. In this way, wind turbine
structures may serve as artificial reefs, in providing surfaces for
non-mobile species to grow on and shelter for small fish (Wilhelmsson
et al ., 2006). Any man-made structure in the marine
environment is usually rapidly colonized by marine organisms (Linley
et al ., 2007). Fouling communities will colonize the hard
structure and will create new pathways for nutrients to be moved from
the water column to the benthos (Gill and Kimber 2005). Once a
structure such as a wind turbine has been erected, it increases the
heterogeneity of the habitat. The physical structure represents more
colonization opportunities for invertebrates, as they have more
surface area. This in turn increases the number of food patches
available, as food resources generally are not uniformly distributed
in coastal waters (Gill and Kimber 2005). This will cause a
fundamental shift in the overall food web dynamics of the ecosystem,
and may result in further shifts in benthic community diversity,
biomass and organic matter recycling (Gill and Kimber 2005). Because
some European offshore renewable energy facilities have been closed
to fishing activity (see § 8.4.8 of this Part, Commercial and
Recreational Fishing), the ecological effects observed in these
facilities may be in part due to decreased fishing disturbances.
Researchers in the North Sea (DONG Energy et al ., 2006) found
that a reduction in fishing activity complicates their ability to
assess ecological change from wind farm development; there is no good
information for ecosystem functioning prior to or without fishing
activity impacts and therefore difficult to establish any
cause-and-effect.
2. In places where the wind
turbines are under threat from erosion, large boulders are often used
as scour protection; these also serve as an artificial reef of their
own (Petersen and Malm 2006). Scour protection also provides hard
surfaces for colonization by fouling communities, as well as
providing crevices and structural complexity likely to attract fish
and invertebrate species seeking shelter (MMS 2007b).
3. It has been found that
although colonizing communities on offshore structures may vary
depending on geographic location and a number of other factors after
initial colonization, the differences are likely to decrease over the
years as more stable communities develop (Linley et al . 2007).
Colonizing communities will develop through the process of
succession, where early colonizing species are subsumed by secondary
colonizers, leading to what is known as the climax community, or the
stable end point in the colonization process. It may take five to six
years for the climax community to develop at a given site (Whomersley
and Picken 2003, in Linley et al . 2007).
4. The changes likely to be
brought about by the reef effect of the turbines are not universally
considered to be beneficial. The changes in abundance and species
composition could degrade other components of the system, potentially
pushing out other species found in the particular habitat where
construction is taking place. In particular, this could affect
vulnerable or endangered species through factors such as loss of
habitat, increased predation, or increased competition for prey as
the composition of the benthic community shifts to that of a hard
bottom community (Linley et al ., 2007).
5. The diversity and biomass
of the colonized structures will depend in part on the choice of
material, its roughness (rugosity), and overall complexity. Concrete
attracts benthic organisms; however, when used in sub-marine
construction, it is often coated with silane or silicone, which
deters the settling of organisms. Smooth steel monopiles, which are
often painted, tend to attract barnacles (Balanus improvisus) and
filamentous algae (Petersen and Malm 2006). The scaffolding used for
oil and gas rigs provides more structural complexity than monopile
foundations; the same is likely to be true for a jacketed structure
for a wind turbine. These rougher, complex structures offer more
protection from predators and from high velocities and scour (MMS
2009a).
6. Another factor influencing
the colonization of wind turbine structures will be the orientation
of the structures to the prevailing currents. Current speed and
direction can influence food availability, oxygen levels and the
supply of larval recruits to an area. As a result, structures more
exposed to local currents may be more colonized than other
installations within the facility. Furthermore, structures with more
complex shapes will offer a greater range of localized hydrographic
conditions, offering more potential for colonization and greater
biodiversity (Linley et al . 2007). Colonization of structures
will be dependent on sufficient numbers of larvae present in the
area, and on suitable environmental conditions (Linley et al .
2007).
7. Often barnacles are the
first colonizers of the intertidal zone, while algae such as red
seaweeds and kelp, along with mussels, will dominate colonization
starting at 1 to 2 meters below the surface. Colonies based on
mussels will also attract scavengers such as starfish and flounder.
In addition to mussels, some structures may instead be colonized by a
grouping of species including anemones, hydroids, and sea squirts.
The larvae present in the water column will vary depending on the
time of year, so colonization may be dependent on the time of year in
which the structures are erected. Community structure will also be
dependent on the presence of predators and on secondary colonizers
(Linley et al . 2007). Other species found within the Ocean
SAMP area that are likely to be early colonizers include algae,
sponges, and bryozoans, and other secondary colonizers are likely to
include polychaetes, oligochaetes, nematodes, nudibranchs,
gastropods, and crabs (MMS 2009a). These substantial colonies of
invertebrates will attract fish to the structures, resulting in a
reef effect around the support structures. For more on reef effects
and the attraction of fish, see § 8.4.7(G) of this Part below.
8. Studies conducted in
Denmark (Dong Energy et al. 2006) at two wind farms sites (Nysted, 76
turbines; Horns Rev, 80 turbines) has shown major changes in
community structure of the offshore ecosystem from one based on
infauna, or invertebrates that live within the substrate, to that of
a hard bottom marine community and a commensurate increase in biomass
by 50 to 150 times greater.
9. Wind turbines in the Baltic
Sea built on monopiles are almost entirely encrusted with a
monoculture of blue mussels (Mytilus edulis), which may be the result
of a lack of predation and competition from other species (Petersen
and Malm 2006), as well as from low salinity in the area where the
turbines have been constructed. Mussels provide a hard substratum
used by macroalgae and epifauna, and therefore have the potential to
induce further change in the ecosystem by providing more surface area
for colonization. Colonization of wind farms will be determined
partly through zonation, the distribution of various communities of
organisms at different depths in the water column. A study of the
Nysted offshore wind farm found high concentrations of blue mussels
on the wind turbine foundations, with mussel biomass increasing
closer to the surface, although in the highest zonation, in the upper
one meter of depth, the foundation was instead colonized by
barnacles. The biomass of barnacles was determined, through modeling
techniques, to be seven to eighteen times higher on the foundation
close to the surface than on the scour protection. The extent to
which these mussels serve as an artificial reef and increase
productivity and biomass will depend on the ecosystem feedback
between the mussel colonies and the pelagic and benthic environments
around them, such as whether other invertebrates colonize the
mussels, and whether fish and other animals utilize these colonies
for food and shelter (Maar et al . 2009). On oil and gas
platforms in California, the structures are encrusted with mussels,
at least at depths above 100 feet (30.5 m); as mussels are knocked
off the platforms and accumulate at the bottom, they create shell
mounds on the seafloor which provide a secondary habitat for fish and
other species (Love et al . 2003).
10. A study of the effects of
the Horns Rev wind farm in Denmark found a shift in the benthic
community from the indigenous infaunal community to an epifouling
community associated with hard bottom habitats as both the monopiles
and the scour protection were colonized by algae and invertebrates.
Two species of amphipods (Jassa marmorata and Caprella linearis) were
the most abundant species found on the turbines, and a total of seven
species of invertebrates, including the two amphipods, the common
mussel (Mytilus edulis), a barnacle species (Balanus cretanus), the
common starfish (Asteria rubens), the bristle worm (Pomatoceros
triqueter), and the edible crab (Cancer pagurus) made up 94% of the
total biomass on the structures. There were also eleven taxa of
seaweeds found on the monopiles and the scour protection. The
monopiles and scour protection were found to be hatchery or nursery
grounds for a number of invertebrates, including crabs. The wind
turbine substructure and scour protection were found to house two
species of worms new to this area, and considered threatened
elsewhere in the region. The result of this new community has been an
estimated 60-fold increase in the availability of food for fish and
other organisms in the area compared with the original benthic
community (Leonhard and Pedersen 2005). For information on the
potential future uses associated with the epifouling communities
formed on offshore wind energy turbines see Chapter 9, Other Future
Uses.
11. Conversely, one study
conducted at the Nysted offshore wind farm in Denmark, found an
overall decline in biomass measured over three years. The encrusting
community at this site had evolved to become almost a monoculture of
mussels. This particular area is brackish; the lack of sea stars, an
important mussel predator, was attributed to the low salinity.
Similar changes were observed at a test site; it was concluded that
these were the result of natural variations rather than an effect of
the wind turbines (MMS 2007b).
12. If scour holes form in the
sea bed adjacent to the turbines, these holes may be attractive
habitat to species such as crab and lobster, and to some fish
species, furthering the reef effect of the structures (Rodmell and
Johnson 2002). For more on effects on scour and the physical
oceanography of the Ocean SAMP area from wind turbines, see §
8.4.2(E) of this Part.
13. If periodic cleaning of
the encrusting organisms on the structure base occurs, the community
will be more or less permanently in the early-colonization phase, and
will not develop through succession into a more mature climax
community with greater biodiversity. Instead, after each cleaning a
new community will redevelop on the structure, with the species
composition varying based on the season, depending on which larval
species are present in the water column at the time. Moreover, if
shells are periodically removed, the discarded debris may attract
scavenging animals, and may serve to create new habitat on the
seafloor where they accumulate (Linley et al . 2007).
14. The reef effect is
particularly relevant to fisheries resources as well as other species
groups; see sections on marine mammals, fish, and sea turtles below
for further discussion.
E. Changes in community
composition (formerly § 850.3.3)
1. Wind energy and other
offshore renewable energy projects could have indirect ecological
effects that could affect the benthic community. A change in the type
and abundance of benthic species can be expected at the turbine
sites, which will change food availability for higher trophic levels.
Studies of habitat disturbance resulting from fishing or dredging
activity have shown effects on local species diversity and population
density; the effects of offshore renewable energy projects are likely
to be similar (as suggested by Gill 2005). The magnitude of these
effects depends on the duration and intensity of the disturbance, and
on the resistance and resilience of species living within the
sediment. The expected effects are a local loss of sedentary fauna
living in the substrate, with non-sedentary bottom-dwellers being
displaced from the area.
2. Because the placement of
wind turbines will increase habitat for benthic species, the
structures will have the effect of increasing local food
availability, which may bring some fish and other mobile species into
the area. This may increase use of the area by immigrant fauna. More
adaptable species will probably dominate the area under these new
ecological conditions. The change in prey size, type, and abundance
in the vicinity of the structures may also affect predators.
Predators moving into the area may result in prey depletion (Gill
2005).
3. The PEIS (MMS 2007a)
indicates that the removal and deposition of benthic sediments
associated with construction may result in the smothering of some
benthic organisms within the footprint of the towers or along the
cable route. Smothering would be a problem primarily for sedentary
invertebrates as most finfish and mobile shellfish would be expected
to move out of the way of incoming sediment (MMS 2007a). Studies
conducted on Danish wind farms found the impacts on benthic
communities from burial by sediment were minimal when monopile
substructures were installed, and the impacts were both temporary and
had limited spatial impact (DONG Energy et al . 2006). The
recolonization of an area disturbed during the construction process
may take months or years (Gill 2005). Studies of the impacts of
sediment displacement from cable laying found macro algae and benthic
infauna were still recovering two years after the activity had ceased
(DONG Energy et al . 2006).
4. If fishing pressure is
reduced in the areas around the turbines as a result of fewer fishing
vessels in the vicinity of the turbines, this could have impacts on
the community as a whole, both from a reduction on fishing mortality
of some species and a resulting increase in predation by these
species on others (MMS 2007b). For example, in the Horns Rev wind
farm, an increase in bivalves and worms inside of the park was
attributed to a decline in predation from scoters (a waterfowl
species), who were avoiding the wind turbines (Leonhard and Pedersen
2005). At the Nysted wind farm in Denmark, densities of sand eels
were found to increase by 300 percent between 2002 and 2004. The
increase was likely attributable to either a decrease in sand eel
predation, or a decrease in fishing mortality (Jensen et al .
2004, in MMS 2007b).
5. There is also a possibility
that invasive species may colonize the structures (MMS 2007a). The
disturbances caused by the placement of new structures may make the
area more susceptible to invasion by non-native species (Petersen and
Malm 2006). Monitoring at Denmark’s Horns Rev wind farm in 2004
found an invasive species of tube amphipod, Jassa marmorata, not
previously seen in Denmark, to be the most abundant invertebrate
found on hard bottom substrate in the area (DONG Energy and
Vattenfall 2006).
6. Didemnum spp., a
particularly aggressive invasive tunicate (sea squirt) of unknown
origin, arrived in the New England region in the late 1980s and has
become firmly embedded in the aquatic community from Eastport, ME to
Shinnecock, NY (Bullard et al . 2007). There are no known,
consistent predators of this species, which grows rapidly on hard
structure to depths of 80 m (262.5 feet). This sea squirt could be
problematic on new subsurface structures placed in the Ocean SAMP
area, potentially colonizing the structure and competing with native
species for planktonic food resources. Furthermore, this species is
known to be able to regenerate entire individuals from fragments
(Bullard et al . 2007), such as might be formed during
maintenance procedures to control biofouling on wind turbine support
structures, for instance. Didemnum is known to grow particularly well
in areas that are well-mixed (Valentine et al . 2007); it is
unknown if the turbulence created downstream of subsurface structure,
wind turbine pilings for instance, would further promote conditions
that favor this organism. See Chapter 2, Ecology of the SAMP Region
for more information on invasive species in the Ocean SAMP area.
7. One study of the North
Hoyle wind farm in the UK found that variability in benthic organisms
taken from surveys around the wind farm pre- and post-construction
was more likely related to natural variability, such as localized
sediment composition, than to any effects caused by the construction
or operation of the wind farm (NWP Offshore Ltd. 2007).
8. The decommissioning of wind
turbines would also have significant ecological effects, as the new
habitat and accompanying species are removed. Habitat heterogeneity
would be immediately reduced, removing a large component of the
benthic community (Gill 2005).
9. In summary, the significant
human activity resulting from the wind turbines would be likely to
have significant effects upon the food web, but just what those
effects are is unknown.
10. See § 8.4.7(G) of this
Part below for the potential effects of changes in community
composition on fisheries and fishery resources.
F. Noise (formerly § 850.3.4)
1. Underwater noise may be
generated during all stages of an offshore renewable energy facility,
including during pre-construction, construction, operation and
decommissioning. The potential effects of noise from offshore
renewable energy are especially a concern for marine mammals and fish
species (see §§ 8.4.5 and 8.4.7 of this Part) It is not understood
whether the noise generated in the construction, operation, and
decommissioning of a wind turbine array would have an effect on
invertebrate species in the benthic environment. Few marine
invertebrates have the sensory organs to perceive sound pressure,
although many can perceive sound waves (Vella et al . 2001 in
MMS 2007b). Studies on the potential impact of air guns on squid have
found few behavioral or psychological effects unless the organisms
are within a few meters of the source (MMS 2007b). If there is any
effect to these species, it is likely to be much less than any
potential effects to fish or marine mammals (Linley et al .
2007).
G. Electromagnetic fields
(EMF) (formerly § 850.3.5)
1. Underwater transmission
cables used to carry the electricity from an offshore renewable
energy facility back to shore produce magnetic fields around the
cables, both perpendicularly and in a lateral direction around the
cable. While the design of industry standard AC cables prevents
electric field emissions, magnetic field emissions are not prevented.
These magnetic emissions induce localized electric fields in the
marine environment as sea water moves through them. Furthermore, in
AC cables the magnetic fields oscillate, and thereby also create an
induced electric field in the environment around the cables,
regardless of whether the cable is buried. Thus the term
electromagnetic field, or EMF, refers to both of these fields
(Petersen and Malm 2006). While EMF is primarily an issue for fish,
sharks and rays (see § 8.4.7 of this Part), some invertebrate
species, such as a variety of crustacean species, have demonstrated
magnetic sensitivity and could be affected by EMF. These animals may
become disoriented; it is not known whether this will have a small or
a significant impact on these animals, although the likely impact is
believed to be small (BERR 2008). For more information on the effects
of electromagnetic fields, see § 8.4.8 of this Part, Fish and
Fisheries Resources.
2. If electromagnetic fields
affect the presence or behavior of species likely to colonize wind
turbine structures, this could have an effect on the potential reef
effects of the structures. However, the interaction between most
invertebrates and EMF is not known, and the existence of healthy
communities of colonizing species on turbine structures in Europe
indicates EMF will not have a significant impact on at least these
species assemblages (Linley et al . 2007).
H. Water quality impacts
(formerly § 850.3.6)
1. Offshore renewable energy
facilities would result in increased vessel traffic through the site
characterization, construction, operation, and decommissioning
phases. The PEIS indicates that such an increase in traffic could
increase the likelihood of fuel spills as a result of vessel
accidents or mechanical problems, though it indicates that the
likelihood of such spills is relatively small (MMS 2007a). In
addition, wastewater, trash, and other debris may be generated at
offshore energy sites by human activities associated with the
facility during construction and maintenance activities (MMS 2007a,
Johnson et al . 2008). The platforms may hold hazardous
materials such as fuel, oils, greases, and coolants. The accidental
discharge of these contaminants into the water column could affect
the water quality around the facility; however these contaminants
would likely remain at the surface and not impact benthic ecosystems
(MMS 2007a). In the PEIS, BOEM indicates that the potential risk to
water quality from offshore renewable energy development is
negligible to minor (MMS 2007a).
2. Water quality may also be
impacted during the construction process by re-suspending bottom
sediments, increasing the turbidity within the water column. For the
potential effects of water quality impacts on birds, marine mammals,
and fish, see sections below.
8.4.4 Birds (formerly §
850.4)
A. Offshore renewable energy
may have a variety of potential effects on avian species in the Ocean
SAMP area. Some effects may be negative, resulting in adverse
impacts, other effects may be neutral, producing no discernible
impacts, while others may be positive, resulting in enhancements. The
purpose of this section is to provide an overview of all the
potential effects of offshore renewable energy development on birds,
including the potential for habitat displacement or modification;
disturbances associated with construction activities and/or vessel
traffic; avoidance behavior or changes in flight patterns; risk of
collision with installed structures; the risk of exposure to
pollutants accidentally discharged during construction, operation or
decommissioning. Potential affects to birds in the Ocean SAMP area
will vary based on the species, as well as on the particular site,
and size of the project. The timing of construction or
decommissioning of an offshore renewable energy facility, along with
the cumulative impacts of other offshore developments will also have
an effect on the degree of impact.
B. Key to measuring and
understanding the effects of offshore renewable energy development on
avian species requires first sufficient baseline data on the
abundance, distribution, habitat use and flight patterns in the
project area. Baseline studies provide an important comparison point
for assessing the effects of pre-construction, construction,
operation or decommissioning activities. The duration of baseline
studies may vary between project areas to account for ‘natural
variability’ observed in avian use of an area. Locations that
experience large fluctuations in avian densities over time may
require additional baseline monitoring to accurately assess
pre-construction conditions (Fox et al . 2006).
C. Research conducted by Paton
et al. (2010) for the Ocean SAMP has collected baseline data on
species occurrence and distribution in the Ocean SAMP area through
land-based, ship-based and aerial surveys, as well as through radar
surveys from 2009 to 2010, although the exact time period of surveys
varied by survey technique. The goal of this research is to assess
current spatial and temporal patterns of avian abundance and movement
ecology within the Ocean SAMP boundary. Preliminary analysis of the
surveys conducted in nearshore habitats during land-based point
counts from January 2009 to February 2010 recorded 121 species and
over 460,000 detections in the nearshore portion of the Ocean SAMP
area (Figure 8.37 in § 8.4.4(C)(1) of this Part; Paton et al. 2010).
Observations during these nearshore surveys have demonstrated that a
wide range of birds use the Ocean SAMP area, including seaducks
(e.g., eiders and scoters), other seabirds (e.g., loons, cormorants,
alcids and gannets), pelagic seabirds (e.g., storm petrel and
shearwaters), terns and gulls, shorebirds, passerines and other land
birds (e.g., migrating species and swallows). The most abundant bird
species observed in nearshore habitats in the Ocean SAMP area during
land-based surveys were Common Eider (Somateria mollissima), Herring
Gull (Larus argentatus), Surf Scoter (Melanitta perspicillata), Black
Scoter (Melanitta nigra), Double crested Cormorant (Phalacrocorax
auritus), Tree Swallow (Tachycineta bicolor), Great Black-backed Gull
(Larus marinus), Laughing Gull (Leucophaeus atricilla), and the
Northern Gannet (Morus bassanus) (see Figure 8.37 in § 8.4.4(C)(1)
of this Part) (Paton et al. 2010). Farther offshore, more pelagic
species were detected during boat-based surveys conducted from June
2009 to March 2010. During boat-based surveys, which sampled eight 4
by 5 nm grids, 55 species were detected from 10,422 detections (see
Figure 8.38 in § 8.4.4(C)(2) of this Part). In offshore areas,
Herring Gulls, Wilson’s Storm-Petrels (Oceanites oceanicus),
Northern Gannets, Great Black-backed Gulls, White-winged Scoters
(Melanitta fusca) were among the most commonly detected species.
1. Figure 8.37: Most abundant
species observed in nearshore habitats of the Ocean SAMP study area
based on land-based point counts from January 2009 to January 2010
(Paton et al . 2010). (Note: Total detections = 465,039)
2. Figure 8.38: Most abundant
species observed in offshore habitats based on ship-based point
counts in the Ocean SAMP study area from Mar 2009-Jan 2010 (Paton
et al . 2010).
D. Species distribution and
abundance varied both spatially and seasonally in the Ocean SAMP
area. Most birds that use the Ocean SAMP area are migratory, so that
their occurrence is highly seasonal. Paton et al . (2010) have
found high inter-annual variability in the abundance and distribution
of avian species in the Ocean SAMP area, suggesting that the
collection of long-term baseline data prior to construction and
operation of an offshore renewable energy facility will be important
in examining any potential effects to avian species. For further
discussion of the findings of Paton et al . (2010) see Chapter
2, Ecology of the SAMP Region.
E. In addition to recording
occurrence and abundance in the Ocean SAMP area, Paton et al .
(2010) have also identified potential foraging habitat for avian
species. Based on a literature review performed by Paton et al .
(2010) nearshore habitats, with water depths of less than 20 m [66
ft], are believed to be the primary foraging habitat for seaducks
(see Table 8.13 in § 8.4.4(E)(1) of this Part). Figure 8.39 in §
8.4.4(F)(1) of this Part illustrates the areas within the Ocean SAMP
boundary with water depths less than 20 m (66 feet) and therefore is
thought to represent the primary foraging habitat for the thousands
of seaducks that winter in the Ocean SAMP waters. Preferred sea duck
foraging areas are strongly correlated with environmental variables
such as water depth, bottom substrate, bivalve community, and bivalve
density (Vaitkus and Bubinas 2001). Currently, bathymetric data
(water depth, bottom substrate) of the Ocean SAMP area is well known,
but relatively little is known about bivalve community and bivalve
density, especially further offshore. Foraging depths of seaducks
differ among species and are a function of preferred diet, but
average depths tend to be less than 20 meters (66 feet) for most
species. Common eiders forage in water less than 10 m (33 feet)
during the winter when diving over rocky substrate and kelp beds
(Goudie et al . 2000; Guillemette et al ., 1993).
Preferred diet of common eider changes with season and foraging
location, but mainly consists of mollusks and crustaceans (Goudie et
al . 2000; Palmer 1949; Cottam 1939). Maximum diving depths of
scoters are about 25 m (82 feet), although most birds probably forage
in water less than 20 meters (66 feet) deep, particularly during the
winter months (Vaitkus and Bubinas 2001; Bordage and Savard 1995).
Scoter diet in marine environments predominantly consists of mollusks
(Bordage & Savard 1995; Durinck et al . 1993; Madsen 1954;
Cottam 1939). Paton et al . (2010) did detect seaducks in
waters up to 25 meters (82 feet) deep during aerial surveys, although
it was unclear from the aerial surveys if the seaducks were foraging
or engaging in other behaviors such as roosting. Paton et al .
(2010) suggest more detailed research be conducted to better
understand the depths used for foraging by scoters or eiders in the
Ocean SAMP area.
1. Table 8.13: Foraging depths
of seaducks based on a literature review (Paton et al . 2010).
Species
Dive depth
Source
Common
eider
0-15
m (0-49 feet).
Ydenberg
and
Guillemetter
1991
Surf
Scoter - day
90%
of dives <20 m (66 feet) depth during diurnal period - used
deeper waters at night - but rarely dived at night.
Lewis
et al . 2005
White-winged
Scoter-day
~90%
of diver <20 m (66 feet) depth - used deeper waters at night -
but rarely dived at night.
Lewis
et al . 2005
Black
Scoter
>95%
of observations were in waters <20m (66 feet) deep.
Kaiser
et al . 2006
Common
Eider
100%
<16 m (52.5 feet) deep.
NERI
Report 2006
Black
Scoter
100%
<20 m (66 feet) deep.
NERI
Report 2006
F. Land-based surveys
conducted by Paton et al. (2010) support the findings of the
literature review, as large concentrations of seaducks (e.g. scoters
and eiders) have been recorded in these nearshore areas, particularly
off Brenton Point (see Figure 8.39 in § 8.4.4(F)(1) of this Part).
Because one potential effect of offshore renewable energy development
may include permanent habitat loss, identifying and avoiding
potentially important foraging habitat prior to siting future
projects may help to minimize any adverse impacts.
1. Figure 8.39: Potential
foraging areas for seaducks within and adjacent to the Ocean SAMP
boundary (based on a literature review by Paton et al . 2010)
2. Figure 8.40: Total number
of detections for the most abundant guilds observed in nearshore
habitats during land-based point counts, Jan 2009-Feb 2010 (Paton et
al ., 2010). (Note: Total Number of detections = 465,039; Total
Number of Species Recorded= 121)
G. When assessing the
potential effects of offshore renewable energy development, the
impact on endangered or threatened species are of particular concern,
mainly because the magnitude of the potential impact may be much more
severe to these species due to their low population numbers (MMS
2007a). The one federally-listed endangered bird using the Ocean SAMP
area is Roseate Tern ( Sterna dougalli dougalli ). This species
is a long-distance migrant that spends the summer months in New
England, including within the Ocean SAMP area (Paton et al .
2010). Although this species does not nest in Rhode Island, there are
nesting colonies in Connecticut, New York, and Massachusetts that are
close enough that foraging adults from nesting colonies may use Ocean
SAMP waters (see Figure 8.41 in § 1.4.4(G)(1) of this Part). Terns
may travel substantial distances, 25.8 to 30.6 km [16 to 19 miles]
from their breeding locations to access foraging habitat, and
therefore Roseate Terns may use portions of the Ocean SAMP area
(Paton et al . 2010). As of 2007, about 85% of the population
was concentrated at Great Gull Island, NY (1,227 pairs); Bird Island,
Marion, MA (1,111 pairs); and Ram Island, Mattapoisett, MA (463
pairs). There was a small colony (48 pairs) on Penikese Island and 26
pairs nesting on Monomoy National Wildlife Refuge (Mostello 2007).
Areas located in the northeast and northwest of the Ocean SAMP area
lie within the foraging range of the Roseate Tern, and may
potentially be used by for foraging adults.
1. Figure 8.41: Roseate tern
nesting locations in Southern New England (Paton et al . 2010).
H. In addition to foraging
activity, migrating Roseate Terns may also pass through the Ocean
SAMP area on their way to and from their nesting colonies (Harris
2009). Recent studies of post-breeding staging by Roseate Terns
documented 20 sites on Cape Cod where Roseate Terns congregate in the
fall before migrating south. Many uniquely color-banded birds from
Great Gull Island in NY at the western edge of the Ocean SAMP area
were located on Cape Cod (Harris 2009), thus it is probable that many
terns are migrating through the Ocean SAMP area in July and August,
but their migratory routes, the diurnal variation of this migration,
and flight elevations are uncertain. Paton et al . (2010)
conducted surveys specifically to record Roseate Tern use of the
Ocean SAMP area during summer (July, August), and detected relatively
few birds during systematic ship and land-based surveys (total
detections equaled 29 and 125 observations respectively).
Alternatively, observations near Great Salt Pond on Block Island
during July and August of 2009 recorded relatively high numbers of
individuals, with up to 100 observations per day. It is believed that
these birds are likely individuals that breed in New York or
Connecticut and are transiting through the Ocean SAMP area; however
more research is needed on post-breeding movement of Roseate Terns
(Paton et al . 2010).
I. The Piping Plovers
( Charadrius melodus ) is another federally-listed species
threatened species that nests on coastal beaches in Rhode Island and
on Block Island, adjacent to the Ocean SAMP area (see Table 8.14 in §
8.4.4(I)(1) of this Part and Figure 8.42 in § 8.4.4(I)(2) of this
Part). While there is uncertainty surrounding the migratory routes
taken by Piping Plovers, the U.S. Fish and Wildlife Service (1996)
presumes that the majority of the migratory movements of Atlantic
Coast Piping Plovers occur along a narrow flight corridor above the
outer beaches of the coastline. Moreover, inland and offshore
migratory observations are rare (U.S. Fish and Wildlife Service
1996). However, further investigation into Piping Plover movements in
a project area prior to construction would help minimize the impact
of avoidance behavior.
1. Table 8.14: 2009 Piping
plover nesting sites (USFWS 2010)
Beach
Nesting
Pairs
Chick
Total
Block
Island
2
0
Charlestown
Beach
0
0
East
Beach Watch Hill
22
53
East
Matunuck
1
2
Green
Hill
1
2
Napatree
10
16
Narragansett
Town Beach
0
0
Narrow
River
2
4
Ninigret
Conservation Area
4
5
Ninigret
NWR and Arnolda
2
2
Norman
Bird Sanctuary
0
0
Sachuest
Point National Wildlife Refuge
1
0
Sandy
Point
2
4
Third
Beach
1
0
Trustom
Pond National Wildlife Refuge
12
9
Quonochontaug
9
8
Total
69
105
2. Figure 8.42: Potential
piping plover nesting sites adjacent to the Ocean SAMP boundary (Data
from U.S. Fish and Wildlife Service 2010)
J. Under Section 7 of the
Endangered Species Act all federal agencies are directed to consult
with the U.S. Fish and Wildlife Service (USFWS) to ensure that their
actions do not jeopardize listed avian species or, destroy or
adversely modify critical habitat of such species. If the USFWS
determines that a federal action is likely to adversely affect a
species, formal consultation is required, and the issues are examined
thoroughly through the preparation of a Biological Assessment by the
lead federal agency and a Biological Opinion by the USFWS. Each
addresses whether any part of the proposed action is likely to
jeopardize the existence of the listed species, and may outline any
necessary binding, and/or discretionary recommendations to reduce
impacts (MMS 2009a). Compliance with the ESA regulations and
coordination with the USFWS ensures that project activities are
conducted in a manner that greatly minimizes or eliminates impacting
listed species or their habitats (MMS 2007a). See Chapter 10,
Existing Statutes, Regulations and Policies for more information on
the ESA.
K. Existing federal
legislation also provides protection to migratory bird species under
the Migratory Bird Treaty Act and the Migratory Bird Executive Order
13186. Consequently, when a proposed offshore renewable energy
project undergoes NEPA review, the USFWS will be consulted to
determine impacts to migratory species. As a result of the Migratory
Bird Executive Order 13186, BOEM (formerly the Minerals Management
Service) and USFWS have produced a Memorandum of Understanding that
identifies specific areas for cooperative action between the agencies
and will inform the review process of offshore wind energy facilities
in federal waters, and contribute to the conservation and management
of migratory birds and their habitats (MMS and U.S. Fish and Wildlife
Service 2009). For more information on the Migratory Bird Treaty Act
and the Migratory Bird Executive Order 13186, see Chapter 10,
Existing Statutes, Regulations and Policies.
L. Past studies have shown
that passerine species use Block Island as a migratory stopover and
also as a breeding area (Reinert et al ., 2002). Radar surveys
on Block Island as part of the research conducted by Paton et al .
(2010) has supported these findings. Preliminary analysis of radar
data suggests that large numbers of passerines are flying over the
Ocean SAMP area, especially during the fall. Further analysis of the
radar data by Paton et al . (2010) will provide some evidence
of the directional movements, abundance and flight elevations. Little
is known regarding offshore passerine migration, though the work of
Paton et al . (2010) will provide greater insight into the use
of the Ocean SAMP area.
M. The current understanding
of the potential effects of offshore renewable energy development on
birds is based primarily on monitoring performed at European offshore
wind energy facilities, particularly Horns Rev and Nysted Offshore
Wind Energy Facilities in Denmark (see Table 8.15 in § 8.4.4(M)(1)
of this Part). It should also be noted that at three of the
operational sites where bird surveys have taken place (Horns Rev,
Nysted and North Hoyle) bird numbers were relatively low prior to
construction. Therefore, while the overall conclusions of these
reports are useful in identifying potential effects, the authors
caution that the results may be applicable to other sites only on a
very general level (Petersen et al . 2006; Michel et al .
2007). In addition to European reports, the Final Environmental
Impact Statement for the Cape Wind Energy Project, LLC (MMS 2009a)
and the PEIS (MMS 2007a) have also identified potential effects of
offshore wind energy development to avian species. Ultimately, the
nature and magnitude of effects of offshore wind energy development
on marine and coastal birds depends on the specific location of the
facility and its transmission cable (e.g., proximity to nesting sites
or foraging habitat), the scale and design of the facility, and the
timing of construction-related activities (OSPAR 2006; MMS 2007a).
1. Table 8.15: Summary of
European monitoring of avian species.
Offshore
Wind Energy Facility
Survey
Years
Summary
of Findings
Citation
Tuno
Knob, Denmark: 10 turbines; online since 1995
1994-1997
1998-1999
Displacement/Changes
in Distribution:
Common
Eiders declined by 75% and Black Scoters* by more than 90% during
post-construction
Flight
Activity/Avoidance:
Nocturnal
flight activity of eiders and scoters occurred within and near the
project site
Nocturnal
flight activity was 3-6 times greater on moonlit nights compared
to dark nights
Flight
activity inside and in the vicinity the facility was lower than
outside the facility
Guillemette
et al .,
1998, 1999
Tulp
et al .
1999
Nysted,
Denmark: 72 turbines; online since 2004
1999-2005
Displacement/Changes
in Distribution:
Significant
reduction in long-tailed duck staging in the project area
post-construction
Gulls
and cormorants demonstrated attraction behavior to the structures
within the facility
Flight
Activity/Avoidance:
91-92%
of all birds recorded avoided the offshore wind energy facility
Lateral
deflection averaged .5 km (0.3 miles) at night and 1.5 km (0.9
miles) or greater during the day
Moderate
reactions in flight routes were observed 10-15 km (6.2-9.3 miles)
outside the facility
For
eiders, minor flight adjustments were made at 3 km (1.9 miles)and
marked changes to orientation within 1 km of the facility
Collision
Risk:
One
collision was recorded using a Thermal Animal Detection System
Dong
Energy and Vattenfall 2006
Horns
Rev, Denmark: 80 turbines; online since 2002
1999-2005
Displacement/Changes
in Distribution:
Loons
and alcids avoided foraging and staging in the facility during
construction
Gulls
demonstrated attraction behavior to the structures within the
facility
Flight
Activity/Avoidance:
Several
species of seabirds showed avoidance of the facility and adjacent
areas (2-4 km [1.2-2.5 miles]) post-construction, though this was
not significantly different**
There
was a significant decrease in the percentage of loons using the
area in the vicinity of the wind farm post-construction
The
number of scoters increased in the area near the wind farm
post-construction; however, the distribution of scoters indicated
they were avoiding the wind farm area, and were observed to avoid
flying between the turbines
Collision
Risk:
No
collisions were observed
Dong
Energy and Vattenfall 2006
Utgrunden
and Yttre Stengrund, Kalmar Sound, Sweden: 12 turbines total;
online since 2001
1999-2003
Displacement/Changes
in Distribution:
Staging
waterfowl declined throughout the study period
Flight
Activity/Avoidance:
Eider
spring migration paths were altered through the project area
post-construction
Lateral
deflection occurred 1-2 km (0.6-1.2 miles) away from the facility
(in good visibility)
15%
of the autumn flocks and 30% of the spring flocks altered flight
paths around facility
Collision
Risk:
Out
of the 1.5 million waterfowl observed migrating through Kalmar
Sound, no collisions were observed
Pettersson
2005
North
Hoyle, U.K.: 30 turbines; online since 2003
2001-2004
Displacement/Changes
in Distribution:
Red-throated
loon and cormorant shifted their distribution toward the wind park
during construction
Cormorant
avoided the wind park during and after construction
No
significant change in distribution was observed in the common
scoter, terns, guillemots, auks***
National
Wind Power 2003
Blyth,
U.K.: 2 turbines offshore, 9 turbines on the breakwater; offshore
online since 2000; onshore online since 1993
1991-2001
Displacement/Changes
in Distribution:
No
evidence of significant long-term displacement of birds from their
habitats (either feeding areas or flight routes).
Temporary
displacement of cormorants was observed.
Flight
Activity/Avoidance:
Approximately
80% of observed flight activity was below rotor height
Gulls
were the primary species flying at rotor height and feeding
between turbines
Collision
Risk:
Overall
collision rate from 1991-2001 was 3%
Eider
collision rates declined over the monitoring period, suggesting
adaptive behavior
U.K.
Department of Trade and Industry 2006
Kentish
Flats, U.K. 30 turbines; online since 2005
2001-2005
Displacement/Changes
in Distribution:
No
significant changes in abundance of bird population were observed
between pre- and post-construction periods
Though
not statistically significant, observational data suggested that
red-throated loons and great and lesser black-backed gulls
decreased in abundance, and herring gulls increased in abundance
at the study site
Flight
Activity/Avoidance:
Observational
data showed fewer common terns were observed flying through the
facility (though not statistically significant)
Gill,
Sales, and Beasley, 2006
*
Guillemette et al . 1998 and 1999 also found decreased
scoter abundance in the control site.
**
Authors stated that low overall bird numbers at the Horns Rev
site, high variability between surveys and limited observations
during poor visibility conditions prevented sufficient observance
to assess avoidance.
***
Authors stated that low overall bird numbers at North Hoyle made
detecting changes in abundance difficult.
N. Habitat displacement or
modification (formerly § 850.4.1)
1. Offshore renewable energy
development may result in temporary or permanent habitat displacement
or modification during the construction, operation or decommissioning
of a facility. Depending on the location of the facility, birds may
potentially be displaced from offshore feeding, nesting, migratory
staging, or resting areas. Displacement may be caused by the visual
stimulus of rotating turbines, or the boat/ helicopter traffic
associated with construction or maintenance activities (Fox et
al ., 2006). Habitat loss or modification on avian species may
result in increased energy expenditures as birds may need to fly
farther to access alternate habitat (MMS 2009a). Increased energy
expenditures if severe may result in decreased fitness, nesting
success, or survival (MMS 2009a). Current research suggests that the
permanent loss of habitat, particularly foraging habitat, has the
potential to significantly impact certain avian species. However, the
severity of the effects of displacement from foraging habitat depends
on the amount of habitat lost, the distance to alternate habitat, and
the food resources available at the nearest alternate site (MMS
2009a). Siting offshore renewable energy facilities in areas to avoid
important bird foraging areas may minimize any potential adverse
impacts on birds (OSPAR 2006; MMS 2007a).
2. Changes in species
distribution have been observed at a number of offshore wind energy
facilities in Europe. Studies of the Horns Rev and Nysted wind farms
in Denmark generally found birds to demonstrate avoidance behavior of
the wind farms, although the responses were highly species specific.
Diving ducks, in particular, avoided the turbines, and few birds were
observed in the area within the turbines (see Table 8.15 in §
8.4.4(M)(1) of this Part). This displacement of birds represents
effective habitat loss for a number of species, although it is
important to evaluate habitat loss in terms of the total proportion
of feeding habitat available (DONG Energy and Vattenfall 2006). One
reported example of habitat displacement was found to occur at the
Nysted Offshore Wind Energy Facility in Denmark. Long-tailed ducks
( Clangula hyemalis ) at this site showed statistically
significant reductions in density within and 2 km (1.2 miles) around
the wind farm post-construction. Prior to construction the same area
had shown higher than average densities, suggesting that the facility
had resulted in the displacement of this species from formerly
favored feeding areas. However, the observed number of long-tailed
ducks was relatively low and therefore of no significance to the
overall population (DONG Energy and Vattenfall 2006).
3. At the Horns Rev
Demonstration Project, Red-throated and Arctic Loons ( Gavia
stellata and Gavia arctica ), Northern Gannets ( Sula
bassana ), Black Scoters ( Melanitta nigra ), Common Murre
and Razorbills ( Uria aalge and Alca torda ) decreased
their use of the wind farm area after the installation of the wind
turbines, including also zones of 2 and 4 km (1.2 and 2.5 miles)
around the wind farm (DONG Energy and Vattenfall 2006). The reason
for this avoidance was unknown, though the researchers suggest that
perhaps disturbance effects from the turbines or from increased human
activity associated with maintenance of the facility may be possible
reasons. However, changes in the distribution of food resources in
the study area may have also played a role. In contrast, Herring
Gulls ( Larus argentatus ) showed a decreased avoidance of the
wind farm area, while Great Black-backed Gulls ( Larus marinus ),
Little Gulls ( Larus minutus ) and Arctic and Common Terns
( Sterna paradisaea/hirundo ) showed a general shift from
preconstruction avoidance to post construction preference of the wind
farm area. Gulls and terns recorded within the facility were mainly
observed at the edges of the wind farm and far less in the central
parts of the facility. The presence of the turbines and the
associated vessel activity in the area were suggested as possible
reasons for increased use of the project areas by the gulls (DONG
Energy and Vattenfall 2006).
4. Additional evidence of
displacement or changes in distribution patterns of birds
post-construction were reported in the monitoring reports from Tuno
Knob (eiders and scoters), Yttre Stengrund and Utgrunden wind parks
in Kalmar Sound (waterfowl), North Hoyle (shag, a species of
cormorant), Blyth (cormorant), and Kentish Flats (loons and gulls)
(Guillemette et al .1998; DONG Energy and Vattenfall 2006;
Pettersson 2005; National Wind Power 2003; U.K. Department of Trade
and Industry 2006; Gill, Sales, and Beasley 2006) though the
statistical significance of displacement varied widely among studies
(Michel et al . 2007) (see Table 8.15 in § 8.4.4(M)(1) of this
Part). Changes in distribution or displacement of avian species from
an area as a result of an offshore renewable energy facility may be
difficult to detect in some situations, especially when there is a
large annual or seasonal fluctuations in densities, or when prey
availability also varies spatially or temporally (Fox et al .
2006; Petersen et al . 2006).
5. Alternatively, changes in
species distribution in an area may result from the attraction to an
offshore wind energy facility. For species who do not avoid the
project area, the reef effects caused by the underwater structures of
an offshore renewable energy facility may increase prey availability.
At the Nysted Offshore Wind Energy Facility observations suggested
that both Great Cormorants ( Phalacrocorax carbo ) and
Red-breasted Mergansers ( Mergus serrator ) were attracted to
the project site. Cormorants were observed roosting on the
meteorological masts and the foundation of the turbines, suggesting
that this species was not avoiding the area but instead using the
installed structures (DONG Energy and Vattenfall 2006). Observations
of the Red-breasted Mergansers showed indications of an increased
preference of the wind farm site and peripheral areas (within 4 km
[2.5 miles]) after the installation of the wind farm. Increased fish
availability in the area in the post-construction phase was suggested
as a possible explanation for this increase (Petersen et al .
2006). For a more detailed discussion of the potential for reef
effects around offshore renewable energy facilities see § 8.4.3(D)
of this Part.
6. Temporary or permanent
habitat modification may result from construction activities such as
foundation or turbine installation, cable laying, or onshore
installations. For example, during construction periods, installation
activities associated with substructures and cable laying may
increase temporarily the turbidity in the project area. Increased
total suspended solids may limit a birds’ ability to see under
water and thereby search for food by sight, especially seaducks that
depend on benthic invertebrates as food. The Cape Wind FEIS predicts
that sediment suspended by the cable installation will be localized
(within 457 m [1,500 ft] of the trench) and may result in levels of
20 mg/liter. However, the turbidity effects caused by cable laying
and other construction related activities will be highly site
specific. Any impacts to turbidity are likely to be localized and
temporary (MMS 2009a).
7. Onshore construction
associated with offshore renewable energy development may result in
the loss or alteration of coastal habitat used by birds for foraging,
roosting, nesting, migratory staging or resting. While the impacts of
habitat modification on most birds would be expected to be temporary
(lasting only until construction was completed), modifications to
some coastal habitats (e.g., near onshore substations) may be
long-term (MMS 2007a).
O. Human disturbance (formerly
§ 850.4.2)
1. Construction, operation and
decommissioning activities may cause a temporary or long-term
disturbance to birds in the vicinity of an offshore renewable energy
facility, or in coastal areas where underwater transmission cables
are connected to the grid. Vessel traffic, noise associated with pile
driving or other construction of above-water portions of the towers
and the substation may result in the disturbance of birds offshore.
Affected birds would be expected to leave the area during the
construction period, and some may permanently abandon the area due to
the subsequent presence and operation of the completed offshore
renewable energy facility (MMS 2009a; Petersen et al ., 2006).
One observed example of disturbance at the Horns Rev site involved a
passing service helicopter through an area outside of the wind farm
where a congregation of Black Scoters was present. The helicopter
activity resulted in a massive flush of birds which took to the air
in avoidance. However, this reaction was only temporary as most of
the disturbed birds were recorded landing in the same area after the
helicopter had left (Petersen et al . 2006). Onshore, coastal
construction involved in connecting the transmission cable to the
grid, may disturb shorebirds in the area (MMS 2009a). Particularly
sensitive species, such as the Piping Plover, may be disturbed from
their nests or from foraging activities which may have consequences
on individual health or breeding success (MMS 2009a). Siting onshore
transmission cable connections away from known nesting habitats when
possible and scheduling onshore construction activities during
non-breeding seasons may minimize any potential adverse impacts to
shorebirds.
P. Avoidance/flight barrier
(formerly § 850.4.3)
1. Avoidance behavior or the
alteration of flight patterns may also result from the presence of an
offshore renewable energy facility, as studies have shown that some
birds chose to fly outside an offshore wind energy facility rather
than fly between the turbines (MMS 2007b; Fox et al ., 2006;
Petersen et al . 2006; Desholm and Kahlert 2005). Such
avoidance behavior may reduce the risk of collision, however the
offshore wind energy facility may also present a barrier to movement,
increase distances to foraging habitats, or increase migratory flight
distances (Tulp et al ., 1999, Kahlert et al . 2004,
Desholm and Kahlert 2005; Fox et al ., 2006). The level of
impact may depend on the size of the facility, the spacing of the
turbines, the extent of extra energetic cost incurred by avoiding the
area (relative to the normal flight costs pre-construction) and the
ability of the bird to compensate for this degree of added energetic
expenditure. In extreme conditions, increased energy exerted by a
bird to avoid a project site may potentially result in a reduced
physical condition (Fox et al ., 2006).
2. Avoidance behavior and
changes in flight orientation were reported for Tuno Knob (1 to 1.5
km [0.6 to 0.9 miles] from turbines), Nysted (0.5 to 3 km [0.3 to 1.9
miles] from turbines, and sometimes moderate adjustments were
observed 10 to 15 km [6.2 to 9.3 miles] away), Horns Rev (0.2 to 1.5
km [0.1 to 0.9 miles]), and Kalmar Sound (1 to 2 km [0.6 to 1.2
miles]) (Tulp et al . 1999; DONG Energy and Vattenfall 2006;
Pettersson 2005). Extra energetic costs as a result of alterations to
flight paths were calculated and considered to be negligible at
Nysted (0.5 to 0.7 percent) and Kalmar Sound (0.4 percent). In
addition, decreased numbers of migrant flocks were observed crossing
Nysted, Horns Rev, and the Kalmar Sound offshore wind energy
facilities when compared to baseline periods (DONG Energy and
Vattenfall 2006; Pettersson 2005). To date, all studies that have
monitored lateral deflection of migrating flocks reported active
avoidance of turbines (Michel et al . 2007).
3. Researchers at Tuno Knob,
Nysted, Horns Rev, and Kalmar Sound also examined how the effect of
reduced visibility (at night or in poor weather conditions) affected
flight patterns around an offshore wind energy facility (Tulp et
al . 1999; DONG Energy and Vattenfall 2006; Pettersson 2005). The
researchers concluded that flight adjustments often were made closer
to the edge of the wind park at night or in low visibility conditions
than during the day or in clear weather. Observations using the
Thermal Animal Detection Systems (TADS) at Nysted provided infra-red
monitoring over extended periods of nighttime and detected no
movements of birds below 120 m (393.7 feet) during the hours of
darkness, even during periods of heavy migration. This suggests birds
flying in the vicinity of the wind farm are doing so at higher
altitudes at night (up to 1500 m (0.9 miles) altitude), and that even
at heights above the rotor swept zone a lateral response can be
detected amongst night migrating birds (DONG and Vattenfall 2006;
Blew et al . 2006).
Q. Collision with structures
(formerly § 850.4.4)
1. The risk of collision with
offshore renewable energy structures, such as offshore wind turbine
blades and towers, by birds is based on: the frequency of species
occurrence in the project area, visibility conditions during
encounters with structures, and the flight behavior or height of
birds when in the vicinity of a facility (MMS 2009a, Petersen et
al . 2006). Monitoring at European offshore wind energy facilities
has reported relatively few collisions, perhaps in part due to the
avoidance reaction many species exhibit prior to reaching the
facility (Michel et al . 2007).
2. Out of a total 1.5 million
migrating waterfowl observed during the monitoring of the Swedish
offshore wind energy facilities in Kalmar Sound, no collisions were
observed (Pettersson 2005). Similarly, no collisions were observed at
the Horns Rev facility throughout the monitoring period (2002-2005).
While no collisions were observed, the risk was modeled and predicted
to equal approximately 14 birds per year or 1.2 birds per turbine per
year at Kalmar Sound (Pettersson 2005).
3. At Nysted thermal imaging
equipment was mounted to a turbine during operation to capture bird
movement and collisions. One bird collision was recorded during the
2005 monitoring period which covered all four seasons of that year.
However, the equipment was only stationed at one site, limiting the
probability of capturing a collision (DONG Energy and Vattenfall
2006). Because not all turbines could be outfitted with thermal
imaging equipment, a collision model was used to estimate the numbers
of Common Eiders, the most common species in the project area, likely
to collide with the sweeping turbine blades each autumn at the Nysted
offshore wind farm. Using parameters derived from radar
investigations and TADS, and 1,000 iterations of the model, it was
predicted with 95% certainty that out of 235,000 passing birds, 0.018
to 0.020% would collide with all turbines in a single autumn (41 to
48 individuals), equivalent to less than 0.05% of the annual hunt in
Denmark (currently approximately 70,000 birds) (DONG Energy and
Vatenfall 2006).
4. The collision rate at Blyth
Offshore Wind Energy Facility was more accurately measured since nine
of the turbines are located on a breakwater and the entire facility
is relatively close to shore and therefore more easily accessible.
From 1991 to 1996, the collision rate was calculated to equal less
than 0.01 percent. During 10 years of monitoring (1991 to 2001), only
three percent of the 3,074 bird carcasses collected were directly
attributed to collisions with turbines (Still et al ., 1996 as
cited in Michele et al . 2007). Researchers suggested that
mortality events may have correlated with reduced visibility or poor
weather conditions. Eider collision rates declined during the
monitoring period, possibly because of adaptive behavior.
Approximately 80 percent of observed flight activity was below rotor
height; gulls were the primary species flying at rotor height and
feeding between turbines.
5. Research conducted by Paton
et al . (2010) will provide baseline information on the
frequency of occurrence of different avian species in the Ocean SAMP
area, as well as information on the flight elevation of individuals
traveling through the Ocean SAMP area. This information will help to
assess the risk of bird collisions in the Ocean SAMP area if an
offshore wind energy facility were to be developed.
R. Water quality (formerly §
850.4.6)
1. Water quality around an
offshore renewable energy facility may potentially be impacted if
illegal dumping or accidental spills occurs from vessels or
equipment. Because many marine and coastal birds follow behind
vessels to forage in their wake, individuals may be exposed to
accidental discharges of liquid wastes (such as bilge water,
operational discharges). Dumping and oil spills are already subject
to standard operating procedures and discharge regulations (30 C.F.R.
§ 250.300 and MARPOL, Annex V, Public Law 100-220 [101 Statute
1458]), and the discharge of any legally allowed waste is not
expected to pose any threat to avian species (MMS 2007a). Substances
that are legally discharged from vessels offshore are rapidly diluted
and dispersed posing negligible risk to birds in the area (MMS
2007a). Accidental spills from offshore renewable energy facilities
may pose a potential hazard to birds if they result in the release of
large volumes of hazardous materials (MMS 2007a). For example,
transformers, used to transmit energy generated from the offshore
renewable energy facilities to shore, may contain reservoirs of
electrical insulating oil or other fluids. The accidental release of
these materials may impact the health and survival of waterbirds
exposed to the spill, or may indirectly impact avian species by
adversely affecting prey species in the area (MMS 2009a). The
severity of these impacts depend on the location of the facility, the
volume and timing of the spill, the toxicity of the material and the
species exposed to the spill (MMS 2007a; MMS 2009a). An assessment
performed on the Cape Wind Project found that the potential risk
associated with accidental spills is insignificant to minor, and that
precautionary measures such as developing an oil spill response plan
may minimize any adverse impacts on avian species (MMS 2009a).
2. If solid waste is released,
marine and coastal birds may become entangled in or ingest floating,
submerged, and beached debris, potentially resulting in
strangulation, the injury or loss of limbs, entrapment, or the
prevention or hindrance of the ability to fly, swim or ingestion
food, or release toxic chemicals (Dickerman and Goelet 1987; Ryan
1988; Derraik 2002). These adverse impacts may potentially reduce the
growth of an individual or may be lethal in severe cases (MMS 2007a).
Bird species utilizing the Ocean SAMP area are already exposed to the
potential risks associated with marine debris resulting from existing
uses of the Ocean SAMP area.
8.4.5 Marine Mammals
(formerly § 850.5)
A. Offshore renewable energy
may have a variety of effects on marine mammals in the Ocean SAMP
area. The purpose of this section is to provide an overview of all of
the potential effects of offshore renewable energy facilities on the
marine mammal species that are known to occur within the Ocean SAMP
area. It should be noted that these potential effects may vary widely
depending on the species as well as the particular site or project.
In addition, it should be noted that scientific inquiry into the
interactions between offshore wind farms and marine mammals is
relatively new, and in most cases still under development. This
section provides an overview of the best information available to
date. It is expected that this section and the entire Ocean SAMP
document will be updated in the future, as new information is made
available.
B. Understanding the responses
of marine mammals to offshore renewable energy facilities requires
sufficient data on the abundance, distribution, and behavior of
marine mammals, which are difficult to observe because they spend
most of their time below the sea surface (Perrin et al . 2002).
Data on abundance in particular are difficult to come by; there is a
lack of baseline data for many species, and some of the baseline data
in use may be outdated. In order to understand the context in which a
specific development site is being used by target species (e.g., for
feeding, breeding or migration) baseline data should be collected
before any human activity has started (OSPAR 2008). A desk-based
study conducted by Kenney and Vigness-Raposa (2009) for the Ocean
SAMP, has synthesized all available information on marine mammal
occurrence, distribution and usage of this area, providing valuable
background of the importance of this area to marine mammal species.
This report also ranks marine mammal species found within the Ocean
SAMP area according to conservation priority, taking into account
such factors as overall abundance of the population, the likelihood
of occurrence in the Ocean SAMP area, endangered or threatened
status, sensitivity to specific anthropogenic activities, and the
existence of other known threats to the population (Kenney and
Vigness-Raposa 2009).
C. Marine mammal species in
the Ocean SAMP area are either whales (cetaceans), a scientific order
which includes dolphins and porpoises, or seals (pinnipeds). Marine
mammals are highly mobile animals, and for most of the species,
especially the migratory baleen whales, the Ocean SAMP area is used
temporarily as a stopover point during their seasonal movements north
or south between important feeding and breeding grounds. The Ocean
SAMP area overlaps with the Right Whale Seasonal Management Area,
although the typical migratory routes for right whales and other
baleen whales lie further offshore and outside of the Ocean SAMP area
(Kenney and Vigness-Raposa 2009; see Chapter 7, Marine
Transportation, Navigation and Infrastructure). However, in one event
in April 2010, nearly 100 right whales were spotted feeding in Rhode
Island sound, indicating that they do sometimes appear within the
Ocean SAMP boundary area (NEFSC 2010). Right whales and other baleen
whales have the potential to occur in the SAMP area in any season,
but would be most likely during the spring, when they are migrating
northward and secondarily in the fall during the southbound
migration. In most years, the whales would be expected to transit
through the Ocean SAMP area or pass by just offshore of the area.
D. While the impact on any
species of marine mammal within the vicinity of an offshore renewable
energy facility is important, endangered or threatened species are of
particular concern, mainly because the magnitude of the potential
impact may be much more severe to these species due to their low
population numbers (MMS 2007a). The following marine mammals are of
highest concern because they are listed as endangered under the
federal Endangered Species Act (ESA) and may also occur within the
Ocean SAMP area: the North Atlantic Right whale ( Eubalaena
glacialis ), the humpback whale ( Megaptera novaeangliae ),
and the fin whale ( Balaenoptera physalus ). Other marine mammal
species that occur commonly or regularly within the Ocean SAMP area
are listed in Table 8.16 in § 8.4.5(D)(1) of this Part. Three very
abundant species that are likely to occur frequently in the Ocean
SAMP area include the Harbor Porpoise ( Phocoena phocoena ), the
Atlantic White-Sided Dolphin ( Lagenorhynchus acutus ) and the
Short-Beaked Common Dolphin ( Delphinus delphis ) (Kenney and
Vigness-Raposa 2009).
1. Table 8.16. Marine mammal
species most commonly occurring in the Ocean SAMP area (Kenney and
Vigness-Raposa 2009)
Season
Most Abundant in Ocean SAMP Area †
Comments
on Distribution or Activity in the
Ocean SAMP Area
North
Atlantic Right Whale ( E )
Spring
& Fall
Mostly
transits through outer regions of the Ocean SAMP area as
individuals migrate south in the fall and north in the spring;
occasionally individuals will linger for days or weeks to feed in
Ocean SAMP area.
Humpback
Whale ( E )
Spring
& Summer
Abundance
varies year to year in response to prey distribution.
Fin
Whale ( E )
Summer
More
abundant outside the Ocean SAMP boundary.
Sperm
Whale ( E )
Summer
More
abundant outside the Ocean SAMP boundary, primarily in deeper
water.
Harbor
Porpoise
Spring
Can
occur in the Ocean SAMP area during all seasons, but are most
abundant in the spring when they are moving inshore and
northeastward toward feeding grounds. They are among the most
abundant marine mammal species within the Ocean SAMP area.
Atlantic
White-Sided Dolphin
All
seasons
Most
abundant outside Ocean SAMP boundary.
Short-beaked
Common Dolphin
All
seasons
Likely
to occur frequently in the Ocean SAMP area.
Harbor
Seal
Fall,
Winter and Spring
Regular
haul-out sites along the periphery of Block Island (October
through early May). These haul-out sites are thought to be used
primarily by younger animals that are foraging in the area prior
to migrating further north.
Sei
Whale ( E )
Spring
Irregular
abundance in Ocean SAMP area.
Common
Minke Whale
Spring
and Summer
More
abundant outside the Ocean SAMP boundary.
Long-Finned
Pilot Whale
Spring
More
abundant outside the Ocean SAMP boundary.
Risso’s
Dolphin
Spring
and Summer
More
abundant outside the Ocean SAMP boundary.
Bottlenose
Dolphin
Summer
Likely
only to be seen in outer part of Ocean SAMP area.
† In
many cases marine mammal species may be present in all seasons.
Seasons listed are those with the greatest probability of
occurrence.
Seasons
are defined as: Winter (December, January, February); Spring
(March, April, May); Summer (June, July, August); Fall (September,
October, November)
( E)
Marine Mammal is listed as Endangered under the Endangered Species
Act
E. The only species that can
be classified as a seasonal resident marine mammal in the Ocean SAMP
area is the Harbor Seal ( Phoca vitulina ). Harbor seals are
known to regularly occupy haul-out sites on the periphery of Block
Island (along with other sites outside of the Ocean SAMP area within
Narragansett Bay) during the winter and early spring (Kenney and
Vigness-Raposa 2009). The haul-out site used most frequently on Block
Island is a wooden raft located in Cormorant Cove within the Great
Salt Pond, located near the center of the island (See Figure 8.43 in
§ 8.4.5(E)(1) of this Part) (Kenney and Vigness-Raposa 2009;
Schroeder 2000). Because the site is at the center of the island, it
is unlikely to be disturbed by activities associated with the
development of offshore renewable energy.
1. Figure 8.43. Seal haul-out
sites in the Ocean SAMP area (Schroeder 2000; Kenney and
Vigness-Raposa 2009).
F. The degree to which
offshore renewable energy facilities may affect marine mammals
depends in large part on the specific siting of a project, as well as
the use of appropriate mitigation strategies to minimize any adverse
effects (MMS 2007a). All potential adverse impacts and enhancements
posed by any future project within the Ocean SAMP area to marine
mammals will undergo rigorous review under the National Environmental
Policy Act (NEPA) to comply with the standards under the Marine
Mammal Protection Act (MMPA) and the Endangered Species Act (ESA).
Under the MMPA all marine mammals are protected, and acts that result
in the taking (a take is defined as “harass, hunt, capture,
collect, or kill, or attempt to harass, hunt, capture, collect, or
kill any marine mammal”) of marine mammals in U.S. waters is
prohibited without authorization from the National Marine Fisheries
Service (NMFS). Further protection is granted under the ESA by the
NMFS for marine mammals that are listed as threatened or endangered.
The ESA prohibits any person, including private entities, from
"taking" a "listed" species. "Take" is
broadly defined as "to harass, harm, pursue, hunt, shoot, wound,
kill, trap, capture or collect or to attempt to engage in any such
conduct." As a result, any proposed project will require
consultation under the ESA and MMPA to examine all potential effects
on marine mammals prior to development in order to ensure that
potential adverse impacts are minimized. For more information on the
MMPA and the ESA see Chapter 10, Existing Statutes, Regulations, and
Policies.
G. The principle impacts
identified in the PEIS include potential effects of increased
underwater noise, impacts to water quality, vessel strikes and
displacement (MMS 2007a). Of these potential impacts, increased
underwater noise may pose the greatest risk to marine mammals,
especially to baleen whales (e.g. humpback whales and the North
Atlantic right whale), who are in theory most sensitive to the low
frequency sounds produced during construction activities (see below
for further discussion).
H. Noise (formerly § 850.5.1)
1. Marine mammals have
highly-developed acoustic sensory systems, which enable individuals
to communicate, navigate, orient, avoid predators, and forage in an
environment where sound propagates far more efficiently than light
(Perrin et al . 2002) Evaluating noise effects on marine
mammals can be challenging, as information on hearing sensitivity for
most marine mammal species is currently not available (Richardson et
al . 1995; Southall et al . 2007). As a result, when
analyzing potential noise effects from offshore renewable energy
installations, the hearing sensitivities of most marine mammal
species need to be inferred.
2. In principle, marine
mammals can be expected to be most sensitive to sounds within the
frequency range of their vocalizations (Richardson et al .
1995). For example, baleen whales produce low frequency sounds (~10Hz
to 10 kHz), that travel long distances under water, and therefore, it
is expected that these whales would also be most acoustically
sensitive at lower frequencies (Richardson et al . 1995).
However, there is no data on hearing sensitivities in any baleen
whale species to date, making assessments on noise effects quite
difficult. It is known that smaller toothed whales can hear
frequencies over a range of 12 octaves, with a hearing range that
overlaps the frequency content of their echolocation clicks and their
vocalizations used for communication (Hansen et al . 2008; Au
1993; Richardson et al . 1995; Southall et al . 2007). In
addition, as with any mammal, hearing sensitivity varies between
individuals within a species (Houser and Finneran, 2006).
Consequently, as a result of the incomplete data on marine mammal
hearing, it can be difficult to predict the potential impact of noise
from offshore renewable energy facilities on marine mammal species.
There have been a number of studies conducted in Europe on the
effects of pile driving as well as the effects of noise from
operating wind farms on marine mammals. However, Europe has very few
species of marine mammals, and only rare occurrences of baleen whales
in the wind farm areas, leaving significant data gaps in the noise
effects of offshore wind energy on marine mammals.
3. Underwater noise may be
generated during all stages of an offshore renewable energy facility,
including during pre-construction, construction, operation and
decommissioning. The strength and duration of the noise varies
depending on the activity (see Table 8.17 in § 8.4.5(H)(3)(a) of
this Part). For example, some construction activities, such as pile
driving, result in short periods of intense noise generation,
compared with long-term, low level noise associated with operational
activities. While the intensity and duration of the noise produced by
pile driving activities and operational wind turbines vary, both
produce low frequency noise, and therefore potentially pose a risk in
particular to large whales, such as the North Atlantic right whale,
humpback whales, and fin whales, as these species are thought to be
most sensitive in this frequency range (Southall et al . 2007;
see Figure 8.44 in § 8.4.5(H)(3)(b) of this Part). In order to
minimize the risk of causing hearing impairment or injury to any
marine mammal during activities of high noise, monitoring the project
area for the presence of marine mammals and maintenance of an
exclusion zone has been required (MMS 2009a; JNCC 2009). Furthermore,
scheduling construction activities to avoid periods when marine
mammals may be more common in the project area is one precautionary
measure to minimize any potential adverse impacts (OSPAR 2006).
Information on the potential long-term impacts of displaced
individuals, or on the potential effects under water noise may cause
to resident marine mammal populations, is not currently available
(MMS 2007a, OSPAR 2008).
a. Table 8.17: Above and below
water noise sources associated with offshore renewable energy
development (MMS 2007a; OSPAR 2009a)
Above
Water Noise
Noise
Source
Duration
Frequency
Range
Frequency
of Peak Level (Hz)
Peak Sound Intensity
Level
(dB
re-20 ?Pa)
Reference
Distance (m)
Ship/barge/
boat a,b,d
Intermittent
to continuous, up to several hours or days
Broadband,
20?50,000
Hz
250?2,000
68?98
Near
source
Helicopter
Intermittent,
short duration
Broadband
with tones
10?1,000
88
Near
source
Pile
driving a,d
50-100
millisecond pulses/beat, 30?60 beats/min, 1?2 hours/pile
Broadband
200
110
15
m
(49.2
feet)
Construction
equipment d
Intermittent
to continuous
Broadband
Broadband
68-99
15
m
(49.2
feet)
Underwater
Noise Sources
Noise
Source
Duration
Frequency
Range
Frequency
of Peak Level (Hz)
Peak
Sound Intensity Level
(dB
re-1 ?Pa)
Reference
Distance (m)
Ship/barge/
boat a,b,c,,f
Intermittent
to continuous, up to several hours or days
Broadband,
20?50,000 Hz
250?2,000
150-180
rms
1m
(3.3
feet)
**Pile
driving a,d,f
50-100
millisecond pulses/beat,
30?60
beats/min, 1?2 h/pile
Broadband,
20- above 20,000 Hz
100-500
228
peak, 243-257 peak to peak
1m
(3.3
feet)
Seismic
air-gun array b,f
30-60
millisecond pulses, repeated at 10 -15 sec intervals
Mainly
low frequency, but some 10-100,000 Hz
10-125
Up
to 252 downward,
up
to 210 horizontally
1m
(3.3
feet)
Seismic
explosions
TNT
(1-100lbs) e,f
~1-10
milliseconds
2-1,000
Hz
6-21
272-287
1m
(3.3
feet)
Dredging
c,f
Continuous
Broadband,
20-20,000 Hz
100-500
150-186
1m
(3.3
feet)
Drilling
b,c,f
Continuous
Broadband,
10-10,000 Hz
20-500
154
1m
(3.3
feet)
Operating
Turbine (1.5 MW operating in winds of 12 m/s) a
Continuous
50
Hz/ 150 Hz
120-142
1m
(3.3
feet)
a
Thomsen et al . (2006)
b
LGL (1991)
c
Richardson et al . (1995)
d
Washington DOT (2005)
e
Ross (1976)
f
OSPAR (2009a)
**(note:
noise associated with pile driving will vary greatly depending on
the size of the pile and hammer used)
b. Figure 8.44: Typical
frequency bands of sounds produced by marine mammals compared with
the main frequencies associated with offshore renewable energy
development (OSPAR 2009a).
4. When examining acoustic
impacts on marine mammals, four overlapping impact zones are commonly
used (see Figure 8.45 in § 8.4.5(H)(4)(a) of this Part; Richardson
et al . 1995), corresponding to the different effect levels:
the zone of hearing loss, discomfort, or injury, the zone of
responsiveness, the zone of masking and, the zone of detection/
audibility. The zone closest to the sound source usually has the
highest sound levels, which may result in physical damage or injury
to a marine mammal if sound levels are sufficiently high (OSPAR
2009a). In the zone of responsiveness, noise exposure may result in
behavioral reactions such as avoidance, disruption of feeding
behavior, interruption of vocal activity or modifications of vocal
patterns. In the zone of masking, the overlap in the frequencies of
sounds produced by a sound source and those used by marine mammals
has the potential to mask vocalizations, interfering with their
reception and inhibiting the efficient use of sound. The detection
zone is the area in which the noise generated from the sound source
is audible to a marine mammal, and above ambient noise levels
(Richardson et al . 1995).
a. Figure 8.45: Theoretical
zones of noise influence (Richardson et al . 1995).
5. Regarding the impacts of
offshore renewable energy construction on marine mammals, the MMPA
considers the zone of physical impairment, responsiveness and masking
when determining a proposed project’s compliance. Under the MMPA:
“Level A Harassment means any act of pursuit, torment, or annoyance
which has the potential to injure a marine mammal or marine mammal
stock in the wild. Level B Harassment means any act of pursuit,
torment, or annoyance which has the potential to disturb a marine
mammal or marine mammal stock in the wild by causing disruption of
behavioral patterns, including, but not limited to, migration,
breathing, nursing, breeding, feeding, or sheltering but which does
not have the potential to injure a marine mammal or marine mammal
stock in the wild.” See Table 8.18 in § 8.4.5(H)(5)(a) of this
Part for the criteria used to define Level A and Level B affects
under the MMPA.
a. Table 8.18: Criteria for
estimating the effects of noise on marine mammals under the Marine
Mammal Protection Act (U.S. Department of Commerce 2008).
Criteria
NMFS Criteria
Level A Injury (Pinnipeds)
190 dB re 1 µPa rms
(impulse, e.g. pile-driving)
Level A Injury (Cetaceans)
180 dB
re 1 µPa rms (impulse)
Level B Harassment/Behavior
160 dB
re 1 µPa rms (impulse)
Level B Harassment/Behavior
120 dB re 1 µPa rms
(non-pulse noise, e.g. vibratory pile driving)
6. Prior to construction,
geophysical surveys performed to characterize ocean-bottom topography
or geology may include the use of air gun arrays or side-scan sonar.
Survey techniques using high-energy air gun arrays pose a greater
risk to marine mammals in the vicinity of the sound source, as
opposed to side-scan sonar, and may result in temporary hearing
impairment or in extreme cases physical injury very close to the
source. Side-scan sonar, which uses a more focused beam of sound, is
the most common survey technique used in the siting of offshore wind
facilities. Side-scan sonar was found to result in only temporary
behavior changes, even during the more extreme cases, and is unlikely
to result in any hearing impairment or physical injury (MMS 2007a;
NMFS 2002a). It is possible that individual animals will leave the
area or change behavior temporarily as a result of the noise
disturbance (MMS 2007a). In particular, behavioral reactions of
whales (cetaceans) may include: avoidance or flight from the sound
source, disruption of feeding behavior, interruption of vocal
activity, or modifications of vocal patterns. However, the response
of an individual cetacean may be unpredictable, as it depends on the
animal’s current activity, its ability to move away quickly
(especially a concern with regard to North Atlantic Right whales),
and the animal’s previous experience around vessels (MMS 2009a). It
is unknown what long-term effects these changes in behavior may have
on the individual animal or entire cetacean populations.
7. Seals (pinnipeds) have
shown avoidance in response to noise generated by geophysical surveys
(NMFS 2002b; Thomson et al . 2001; MMS 2003; OSPAR 2009a).
Since harbor seals regularly haul-out on sites around Block Island
(Kenney and Vigness-Raposa 2009), survey activities in these areas
may cause a temporary disturbance. The PEIS states that any
displacement from the study area as a result of these surveys is
likely to be temporary, resulting in negligible impacts to marine
mammals (MMS 2007a; MMS 2009a). Siting facilities away from important
marine mammal congregation, mating or feeding areas and taking into
account marine mammal activity in the area when scheduling surveys
will further minimize any potential negative impacts (MMS 2007a).
8. Underwater noise from the
construction of an offshore renewable energy facility is generated
during the installation of the foundation piles used to support the
turbines and transformer platforms. Most offshore turbines are placed
on steel foundations, which are affixed to piles driven into the
seabed. Piles can range in diameter from 1 to 5 m [3.3-16.4 ft], with
the larger piles being used for monopile turbines and smaller piles
used for jacketed structures. The piles are driven into the bottom by
powerful hydraulic hammers, causing very loud noise emissions, which
may be audible for marine mammals over distances of several tens of
kilometers (Thomsen et al . 2006; Nedwell et al . 2007).
The zone of audibility may extend beyond 80 km [49.7 mi] to perhaps
hundreds of kilometers for some marine mammal species (e.g. harbor
porpoises and harbor seals) (Thomsen et al . 2006). Yet pile
driving for one single turbine is of relatively short duration. The
level of noise emitted by pile driving operations is dependent on a
variety of factors such as pile dimensions, seabed characteristics,
water depth, and the strength and duration of the hammer’s impact
on the pile (Nedwell et al . 2007; OSPAR 2009a).
9. Research conducted by
Miller et al . (2010) modeled the extent of pile-driving noise
within the Ocean SAMP area and mapped the areas subject to sound
intensities of concern under the MMPA (see Table 8.18 in §
8.4.5(H)(5)(a) of this Part and Figure 8.46 in § 8.4.5(H)(9)(a) of
this Part). This analysis was calculated for a 1.7 m [5.5 foot]
diameter pile (similar to those used in lattice jacket structures)
driven into the bottom with an impact hammer. The red shaded area
represents the zone of injury, the orange area represents the zone of
harassment or potential behavior response, and the yellow area
represents the zone of audibility or detection by marine mammals. It
should be noted that this is an estimate and that the zones may be
larger or smaller depending on the actual size of the pile and method
of installation.
a. Figure 8.46: Estimate of
the affected area in the vicinity of pile driving (Miller et al .
2010).
10. Pile driving may create
noise that may adversely affect marine mammal feeding or social
interactions, or alter or interrupt vocal activity (MMS 2007; Thomsen
et al . 2006). However, these impacts will vary within, as well
as between, species. Any marine mammal that remains within the
project area at the start of pile driving activities are subject to
the increased risk of hearing impairment that may occur within close
range (Madsen et al 2006; Thomsen et al . 2006). Placing
marine mammal observers onboard construction vessels and halting
construction activity once a marine mammal has been spotted within a
designated exclusion zone are precautionary measures that can be
taken to reduce this potential risk (MMS 2007a). In addition,
acoustic isolation of the ramming pile may reduce the noise level of
pile driving activities. Acoustic deterrent devices and ramp-up
pile-driving procedures may also help to protect individuals from
impairment or injury by encouraging them to leave the construction
site (Thomsen et al . 2006; Tougaard et al . 2003;
Tougaard et al . 2005).
11. In Denmark, the
construction of two offshore wind farms, Nysted and Horns Rev 1, have
provided opportunities for monitoring the behavioral reactions of two
marine mammal species, harbor porpoises and harbor seals, to pile
driving activities. Evidence of temporary avoidance behavior during
pile-driving at Horns Rev was found in harbor porpoises up to
approximately 20 km [12.4 mi] away, both visually, through fewer
observed individuals, and acoustically, through temporarily decreased
acoustic activity (Tougaard et al . 2003). This reduction in
echolocation clicks suggests that either pile-driving affected the
porpoises’ behavior causing individuals to go silent, or the
porpoises left the area during this activity. Tougaard et al .
(2003) observed a return to previous acoustic activity after 3-4
hours. At the Nysted site, where piling only occurred for a brief
period of time, harbor porpoises left the area during construction
and stayed away for several days (Tougaard et al . 2005).
Overall lower abundance of harbor porpoises was observed at the
Nysted site after construction when compared to baseline data,
lasting at least until the second year of operation (Tougaard et
al . 2005). However, it should be noted that researchers are
uncertain if the observed long-term avoidance of the Nysted site by
harbor porpoises was caused by the noise effects of construction.
Porpoise abundance was relatively low in the area before the start of
construction, so the decrease in abundance may have been unrelated to
installation activities (Thomsen et al . 2006). Edren et al .
(2004) found a 10 - 60% decrease in the number of hauled out harbor
seals on a sandbank 10 km [6.2 mi] away from the Nysted construction
site during days of ramming activity. This effect was of short
duration but does suggest that both harbor porpoises and seals
demonstrate behavioral changes or avoidance during pile-driving
activity, and that these effects can span large distances.
12. In addition to surveying
and pile-driving activities, noise associated with ships engaged in
construction, operations and maintenance activities may potentially
impact marine mammals in the project area (Köller et al .
2006; OSPAR 2009a) (see Table 8.17 in § 8.4.5(H)(3)(a) of this
Part). Overall, the ambient noise created by marine transportation,
including ships associated with the wind farms as well as other ship
traffic in the area, will be of a higher intensity than what would
likely be created by wind turbines (OSPAR 2009a). Shipping noise
should be taken into account when considering the overall levels of
ambient noise underwater where wind turbines are in place. The use of
ships in servicing the turbines and other activities should be
accounted for when predicting the overall noise levels from the wind
farms (Wahlberg and Westerberg 2005). Shipping noise is likely to be
significantly higher during the construction phase (BMT Cordah
Limited 2003). It is estimated that each turbine will require one to
two days of maintenance each year; depending on the size of a wind
farm, ship noise could be present in the vicinity of the turbines
often (Thomsen et al . 2006). However, given the existing
levels of shipping in the Ocean SAMP area and resulting background
noise (see Chapter 7, Marine Transportation, Navigation and
Infrastructure) the added noise from maintenance vessels is likely to
be negligible. Observed reactions of marine mammals to vessel noise
have included apparent indifference, attraction (e.g. dolphins’
attraction to moving vessels), cessation of vocalizations or feeding
activity, and vessel avoidance (Richardson et al 1995; Nowacek
and Wells 2001). Noise may also be caused by transit of helicopters
used to support offshore renewable energy facilities far offshore
(MMS 2007a). Marine mammal behavior would likely return to normal
following the passage of the vessel (Richardson et al . 1995).
Edren et al . (2004) conducted video monitoring during the
construction of the Nysted offshore wind farm and found no
discernible changes in harbor seal behavior as a result of the
increased ship traffic, although ship movements were controlled to
avoid the seal sanctuary. In the Ocean SAMP area, the most heavily
used seal haul out site on Block Island is located within a protected
cove (see Figure 8.43 in § 8.4.5(E)(1) of this Part) and therefore
would not be affected by the noise from construction traffic.
However, the other haul out sites surrounding Block Island may be
affected if vessel routes pass in their vicinity or during winter
seasons when these sites are most frequently used (Kenney and
Vigness-Raposa 2009). Prior to construction, all potential impacts
(including noise impacts) to marine mammals by a proposed offshore
renewable energy facility in the Ocean SAMP area will be reviewed
under the MMPA to determine if incidental take or harassment
authorization, or specific mitigation measures are required.
13. Underwater noise may also
result from cable laying activities, including cable laying vessels
or jet plowing techniques (OSPAR 2009b). Noise measurements are not
available for cable laying activities in Europe associated with
offshore wind energy facilities (OSPAR 2009b). However, research
conducted to assess the potential noise impacts associated with the
laying of submarine cables for the Cape Wind Energy Project found
that the jet plowing embedment process would not add appreciable
sound into the water column (MMS 2009a). However, the nature of the
seabed will dictate the type of cable installation procedures used,
and thus the noise profiles that will result will depend on the
physical characteristics of the seafloor (MMS 2007a). In areas with
unconsolidated sediments, only the sound associated with the cable
laying vessels will likely be produced, as the sediments insulate the
cable laying noise (MMS 2009a).
14. Operational noise
generated from offshore renewable energy structures, such as by the
spinning offshore wind turbines, may be transmitted into the water
column via the turbine support structures (OSPAR 2006). The level of
noise emitted into the water column by an operational turbine varies
based on wind speed, the speed of the spinning blades, and the type
of foundation structure (Wahlberg and Westerberg 2005; Ingemansson AB
2003). The operational noise produced by wind turbines is
significantly less than the levels of noise produced during the
construction phase. Underwater noise generated by the turbines is
mostly the result of the movement of mechanical components within the
generator and gearbox, which result in vibrations in the tower,
rather than sounds from the turbine blades themselves. Both the
frequency and intensity of sound generated by the turbines increases
with wind speed. To date, the available data on the effects of noise
from operating wind turbines are sparse, but suggest that behavioral
effects, if any, are likely to be minor and to occur close to the
turbines (review by Madsen et al . 2006; Nedwell et al .
2007). For example, Koschinski et al . (2003) reported
behavioral responses in harbor porpoises and harbor seals to
playbacks of simulated offshore turbine sounds at ranges of 60-200 m
[196.8-656.2 ft], suggesting that the impact zone for these species
is relatively small. In addition, because noise emissions from
operating wind turbines are of low frequencies and low intensity
(Nedwell et al . 2007), operational noise is not thought to be
audible to many marine mammal species over distances greater than a
few tens of meters, as the hearing abilities of most marine mammals
are better at higher frequencies (Richardson et al . 1995;
Southall et al . 2007). One exception may be baleen whales,
such as the North Atlantic Right whale, whose hearing abilities are
thought to include very low frequency sounds (Madsen et. al. 2006).
Scientists predict that individuals of this species may respond to
noise from operating turbines at ranges up to a few kilometers in
quiet habitat (Madsen et al . 2006). However, no studies have
been performed to date on the effect of noise from operational
offshore wind turbines on right whales, or baleen whales in general,
and these predictions have been based primarily on the results of
related acoustic studies (Nowacek et al . 2004; Richardson et
al . 1995; Madsen et al . 2006).
15. Recent measurements by
Nedwell et al . (2007) at five operational wind farms off the
U.K. indicate that wind farm sound could not be detected at a
hydrophone at distances of a few kilometers outside the wind farm.
Measurements taken at a range of 110 meters from a 1.5 MW monopile GE
turbine in Utgruden, Sweden in water depths of approximately 10
meters found operational noise measured 118 dB re 1 mPa2 in any 1/3
octave band at a range of 100 meters at full power production (Betke
et al . 2004). Based on these measurements and measurements of
the ambient noise in the waters just southwest of Block Island,
Miller et al . (2010) determined that the additional noise from
an operational offshore wind turbine is significantly less than noise
from shipping, wind and rain in the region. Miller et al .
(2010) calculated that the noise would be greater than the ambient
noise present within 1 km of the wind turbines and at ranges of 10 km
operational noise would be below the ambient noise in the region.
16. The decommissioning of
offshore renewable installations will also temporarily generate
underwater noise. However, because an offshore renewable energy
facility has not yet been decommissioned, the activities and duration
of the removal is not yet known (Nedwell and Howell 2004). Abrasive
jet cutting (using the force of highly pressurized water) is likely
to be used to cut piles from the seafloor, while the destruction of
the concrete foundations and scour protection may require some
blasting or the use of pneumatic hammers, if the protective
structures cannot be lifted from the seafloor after dismounting the
turbine support structure. Currently, no sound measurements are
available on the use of abrasive jet cutting when decommissioning
offshore structures. While explosives may be a loud point source of
underwater sound, and consequently pose a serious risk of physical
damage to any marine mammals in the detonation area (MMS 2007a),
non-explosive removal techniques are expected to cause short-term,
negligible to minor impacts (MMS 2007a). Therefore, the PEIS suggests
the use of these alternative methods to minimize any adverse effects
(MMS 2007a). If explosives are used, following BOEM guidelines (NTL
No. 2004-G06) may reduce the potential for negative impacts (MMS
2007a).
17. In summary, noise impacts
associated with offshore renewable energy facilities are currently
thought to affect marine mammals. The nature and scale of effects
will depend on: the hearing ability of the species and the individual
animal; the distance the individual is from the sound source; the
frequency and intensity of the noise source; the activities of the
marine mammals at the time of noise exposure; the duration of the
noise-producing activity (i.e. hours, days, months); and transmission
through the area (dependent upon physical conditions of the area such
as topography, geology, sea state, etc.). To date, only a limited
number of studies have been published documenting effects of
construction and operation of offshore wind energy facilities on two
species of marine mammals, harbor porpoises and harbor seals
(Carstensen et al . 2006; Tougaard et al . 2006;
Koschinski et al . 2003). Additional studies have inferred
potential effects based on theoretical models or findings from
similar activities in other industries (the most comprehensive review
of observed effects can be found in OSPAR 2009a). It should be noted,
however, that the range of effects may vary between installations.
I. Vessel Strikes (formerly §
850.5.2)
1. Increased vessel traffic
associated with the construction, operation, or decommissioning of an
offshore renewable energy facility may increase the risk of ship
strikes. Impacts are expected to be minor for most species,
especially seals and smaller cetaceans that are agile enough to avoid
collisions (MMS 2007a). Of all the whale species present within the
Ocean SAMP area, the species considered at the greatest risk of
vessel strikes are fin whales, humpback whales, North Atlantic right
whales and sperm whales, based on the findings of the Large Whale
Ship Strike Database (Jensen and Silber 2004; MMS 2007a). However,
the response of an individual animal to an approaching vessel may be
unpredictable, as it depends on the animal’s behavior at the time,
as well as its previous experience around vessels (MMS 2009a).
2. Of all whale species within
the Ocean SAMP area, the population-level impacts of a vessel strike
would be most severe to the North Atlantic right whale (MMS 2007a).
Ship strikes more commonly result in whale fatalities when a ship is
travelling at speeds of 14 knots [16 mph] or more. In fact, the
number of ship strikes recorded decreases significantly for vessels
travelling less than 10 knots [11.5mph] (Jensen and Silber 2004),
which suggests that reducing ship speeds to this level may reduce the
risk of vessel strikes even further (NOAA National Marine Fisheries
Service 2008). As a result of this finding, the PEIS suggests vessels
reduce ship speed and maintain a safe operating distance when a
marine mammal is observed (MMS 2007a; MMS 2009a). In addition, by
locating offshore renewable energy installations away from migratory
routes, the risk of vessel strikes is further minimized (MMS 2007a).
It should also be noted that there is already a vessel speed
restriction in place during parts of the Ocean SAMP area during
certain times of the year to minimize the risk of right whale ship
strikes; this speed restriction is part of the Right Whale Seasonal
Management Area and is enforced by NMFS (NOAA National Marine
Fisheries Service n.d.). See Chapter 7, Marine Transportation,
Navigation, and Infrastructure for further discussion.
J. Turbidity & Sediment
Resuspension (formerly § 850.5.3)
1. Water quality within a
project area may be affected by the construction and decommissioning
activities, including cable laying, associated with an offshore
renewable energy facility. Specifically, construction or
decommissioning activities may re-suspend bottom sediments, which may
in turn increase concentrations of total suspended solids (TSS) in
the water column (MMS 2009a; OSPAR 2008). The level of impact caused
by increased TSS is primarily dependent upon the sediment composition
of the project site, grain size distributions, and the hydrodynamic
regime (OSPAR 2006). Areas composed of fine grained, loose sediment,
accustomed to frequent increases in turbidity (associated with
storms, tidal or wave action) will likely not be substantially
impacted by the temporary disturbances caused by these activities
(MMS 2009a). Increased TSS concentrations may impact prey abundance
in an area (i.e. zooplankton or fish species), and therefore
indirectly impact marine mammals which depend on those species as a
food source (MMS 2009a; Köeller et al . 2006). However,
because individuals can move to adjoining areas not affected by the
temporary increases in TSS, these impacts are not expected to pose a
threat to marine mammals (MMS 2009a). In the case of the Cape Wind
Project, while TSS concentrations were anticipated around
construction and decommissioning time periods, the increases were
predicted to be temporary and localized (MMS 2009a). Pre-construction
modeling may be useful in predicting the importance of sediment
resuspension at a particular site, and monitoring programs during the
construction can be used to validate model predictions of the
potential TSS effects (OSPAR 2006). Monitoring programs may help to
ensure that TSS levels remain within an acceptable range (OSPAR
2006).
2. The PEIS also identifies
the potential risk posed by re-suspending contaminated sediments into
the water column (MMS 2007a). The suspension of contaminated
sediments from construction activities may in some instances result
in bioaccumulation of toxins in marine mammal tissue, due to the
consumption of contaminated prey (MMS 2009a; see also Hooker et
al . 2008)
3. Water quality around an
offshore renewable energy facility may potentially be impacted if
illegal dumping or accidental spills occurs from vessels or
equipment. Vessel discharges and oil spills are already subject to
standard operating procedures and discharge regulations (30 C.F.R. §
250.300 and MARPOL, Annex V, Public Law 100-220 [101 Statute 1458]),
and the discharge of any legally discharged waste is not expected to
pose any threat to marine mammals (MMS 2007a). Substances that are
legally discharged from vessels offshore are rapidly diluted and
dispersed posing negligible risk to marine mammals (MMS 2007a).
Accidental spills from offshore renewable energy facilities may pose
a potential hazard to marine mammals if they result in the release of
large volumes of hazardous materials (MMS 2007a). For example,
transformers, used to transmit energy generated from the offshore
renewable energy facilities to shore, may contain reservoirs of
electrical insulating oil or other fluids. The accidental release of
these materials may impact the health and survival of marine mammals
exposed to the spill, or may indirectly impact marine mammals by
adversely affecting prey species in the area (MMS 2009a). The
severity of these impacts depend on the location of the facility, the
volume and timing of the spill, the toxicity of the material and the
species exposed to the spill (MMS 2007a; MMS 2009a). An assessment
performed on the Cape Wind Project found that the potential risk
associated with accidental spills is insignificant to minor (MMS
2009a), and that precautionary measures such as producing an oil
spill response plan may minimize any adverse impacts on marine
mammals (NOAA 2009).
K. Electromagnetic Fields
(EMF) (formerly § 850.5.4)
1. Cetaceans have received
attention with respect to induced magnetic fields around underwater
transmission cables as it is hypothesized that they use the Earth’s
magnetic field to navigate during migration (Gill et al .
2005). However, there is very little data supporting the theory of
magnetic orientation in cetaceans. If an effect does exist, transient
mammals would likely only be temporarily affected by an induced
magnetic field (Gill 2005). Moreover, since migration generally
occurs in open water and away from the seabed (Kenney and
Vigness-Raposa 2009), electromagnetic fields are unlikely to have a
detrimental effect on whale migration (Gill et al . 2005).
Research conducted by Miller et al . (2010) examined the
potential electromagnetic fields that may be created from submarine
cables used to support offshore renewable energy development in the
Ocean SAMP area and found that the effects of EMF will be confined to
within 20 meters [65.6 feet] of the cable. No adverse impacts to
marine mammal behavior or navigation is expected from the undersea
transmission cables (MMS 2009a; Gill 2005). EMF associated with
offshore wind energy projects may have potential effects on some
fisheries resources; see § 8.4.7 of this Part below.
L. Habitat alteration &
reef effects (formerly § 850.5.5)
1. Offshore renewable energy
installations sited in soft sediment might locally change the sea bed
characteristics from soft, mobile sediments to a harder substrate by
introducing hard structures for scour protection (rock, concrete
mattresses, grout bags etc. Underwater structures are soon overgrown
by sessile, benthic animals and algae which may increase the biomass
locally, and attract fish and marine mammals as their predators
(Wilhelmsson et al . 2006; OSPAR 2006; NOAA 2009). Similarly,
the steel piles introduce a hard substrate into the water column, and
provide a surface that can be colonized by species that might not
ordinarily be present in soft sediment environments (OSPAR 2006). The
offshore wind farm foundations at Horns Rev and Nysted have been
readily colonized with epifouling communities, causing a local
increase in biodiversity compared to amounts recorded prior to
construction (DONG Energy et al . 2006; Bioconsult A/S 2003;
Energi E2 A/S 2004). However, no evidence has been found to date to
suggest that these reef effects enhance or alter the prey
availability of marine mammal species in the area. For a more
detailed discussion of this potential effect see § 8.4.3 of this
Part.
8.4.6 Sea Turtles (formerly
§ 850.6)
A. The observed effects of
offshore renewable energy development on sea turtles are unknown, as
sea turtles are not present in any of the areas where wind turbines
are currently in place (MMS 2007a). According to Kenney and
Vigness-Raposa (2009), the sea turtles that may be found in the Ocean
SAMP area include the following:
1. Table 8.19. Abundance and
conservation status of Ocean SAMP area sea turtles (Kenney and
Vigness-Raposa 2009)
Turtle
Status
Abundance
Leatherback Sea Turtle
( Dermochelys
coriacea )
Endangered
The
sea turtle most likely to be found in Ocean SAMP area, found in
Ocean SAMP area in summer and early fall when water is warmest.
Dispersed; higher abundance outside Ocean SAMP area.
Loggerhead Sea Turtle
( Caretta caretta )
Threatened
More
abundant in the Northeast than Leatherbacks, but less likely to be
found in the Ocean SAMP area - not often seen in cool or
nearshore waters. May be seen occasionally in summer or fall.
Kemp’s Ridley Sea Turtle
( Lepidochelys
kempii )
Endangered
Small
juveniles known to use habitats around Long Island and Cape Cod,
and may pass through Ocean SAMP area but are not detected in
surveys.
Green Sea Turtle ( Chelonia
mydas )
Threatened
Small
juveniles known to use habitats around Long Island and Cape Cod,
and may pass through Ocean SAMP area but are not detected in
surveys.
2. Sea turtles may use the
Ocean SAMP area for foraging. They are capable of diving to great
depths, although a study of sea turtles off Long Island found them
primarily foraging in waters between 16 and 49 feet (4.9 and 14.9
meters) in depth. Leatherback turtles, likely the most abundant sea
turtles in the Ocean SAMP area, have been shown to dive to great
depths and may spend considerable time on the bottom, sometimes
holding their breath for as long as several hours. Some sea turtles,
particularly green sea turtles, feed on submerged aquatic vegetation
(NOAA National Marine Fisheries Service 2009). While the placement of
wind turbines will be at depths greater than where this foraging
takes place, if cables are placed through areas of submerged aquatic
vegetation, this could have an effect on sea turtles. Similarly, many
sea turtles may feed on benthic invertebrates such as sponges,
bivalves, or crustaceans, all of which are likely be found in the
Ocean SAMP area (NOAA National Marine Fisheries Service 2009). Sea
turtles may be affected by any loss of these food species during the
cable-laying process; again, turtles are unlikely to forage at the
depths where the turbine bases are likely to be located. Leatherback
turtles are known to consume Lion’s mane jellyfish ( Cyanea
capillata ) as a mainstay of their diet; these jellyfish are
plentiful in the Ocean SAMP area during the summer and fall (Lazell
1980).
3. Additionally, any of these
turtle species may migrate through the Ocean SAMP area as part of
their northward or southward migration in spring and fall,
respectively (NOAA National Marine Fisheries Service 2009). While
sightings of most of these species are infrequent, sea turtles,
particularly juveniles, are not routinely detected during surveys,
meaning they may be more common in the Ocean SAMP area than survey
data would suggest. All of the species of sea turtles noted in the
table are likely to be present in the Ocean SAMP area from late
spring/early summer through late fall.
B. Noise (formerly § 850.6.1)
1. Little is known about the
hearing capabilities of sea turtles. Existing data estimate the
hearing bandwidth of the four species of turtles found within the
Ocean SAMP area at between 50 and 1,000 Hz, with a maximum
sensitivity around 200 Hz. They are thought to have very high hearing
thresholds, at around 130 dB re 1 µPa (MMS 2009a). It is believed
that pile driving and vessel noises are within the range of hearing
of turtles, although they may have a limited capacity to detect sound
underwater. Observed reactions from sea turtles exposed to high
intensity sounds include startle responses such as head retraction
and swimming towards the surface, as well as avoidance behavior (MMS
2007a). For more detailed information on the effects of noise within
the SAMP area, see § 8.4.5(H) of this Part, Effects of Noise on
Marine Mammals.
2. The Cape Wind FEIS (MMS
2009a) predicts that no injury during the pile driving process is
likely to occur to sea turtles, even if the turtle were as close as
30 m (98.4 feet) from the source. This prediction is based on noise
estimates created assuming the use of monopiles, and based on the
particular sound characteristics of the proposed location for the
Cape Wind project; estimates for the Ocean SAMP area would differ.
The noise generated by pile driving is likely to cause avoidance
behavior in sea turtles, which may move to other areas. Sea turtles
migrating through the area may also be affected, as they may avoid
the construction area. The Cape Wind FEIS predicted these effects to
be short-term and minor (MMS 2009a). The noise created during
construction, and thus the effects of noise on sea turtles, may vary
depending on the size of the piles and the characteristics of the
particular site.
3. Any seismic surveys used in
the siting process have the potential to affect individual sea
turtles by exposing them to levels of sound high enough to cause
disturbance if a turtle is within a certain distance of the sound
source (1.5 km [0.9 miles]). While the Cape Wind EIS predicted only
minimal effects to sea turtles from seismic surveys (MMS 2009a), the
effects to sea turtles from seismic surveys in the Ocean SAMP area
will depend on the type of survey device used, the water depths, and
other factors.
4. The Cape Wind EIS predicted
that levels of noise generated by construction and maintenance
vessels are expected to be below the levels that would cause any
behavioral reaction in sea turtles except at very short distances.
Likewise, the Cape Wind EIS predicted that sound generated by wind
turbines during operation is not expected to affect the behavior or
abundance of sea turtles in the area (MMS 2009a).
5. The levels of sound
generated by the turbines during operation could have the ability to
interfere with communication, the location of prey or the orientation
of sea turtles if the sounds are in the same frequency ranges heard
by sea turtles. As it is not well understood what the hearing
capacity of sea turtles is, more studies would be needed to
understand whether the sound generated by wind turbines would have
any effect (MMS 2007a).
C. Habitat disturbance
(formerly § 850.6.2)
1. Cable-laying activities may
cause sea turtles to temporarily change swimming direction, and may
disturb sea turtles as they typically like to rest on the bottom. The
increased turbidity as a result of cable-laying and construction,
however, may interfere with the ability of sea turtles to forage by
obscuring or dispersing prey (MMS 2009a).
2. Sea turtles could be harmed
by marine debris generated from the personnel working on the
construction, operation, or decommissioning stages, particularly
plastics that may be accidentally or purposely discarded, which may
be mistaken for prey items by turtles, or which may cause them to
become entangled (MMS 2009a). The dumping of marine debris and other
waste is already strictly regulated under existing statutes (30
C.F.R. § 250.300 and MARPOL, Annex V, Public Law 100-220 [101
Statute 1458]), and if followed marine debris will likely not pose a
great threat to sea turtles.
3. Sea turtles may be at
increased risk of ship strike from increased vessel traffic in the
Ocean SAMP area, particularly during construction activities.
However, ship strikes are relatively rare, and increased vessel
traffic will not necessarily lead to an increase in ship strikes.
Vessels engaged in construction activities are probably moving too
slowly to present a risk, as turtles can easily move to avoid them.
Collision risks will be greater with vessels moving to and from the
construction site (MMS 2009a). Sea turtles may avoid areas of high
vessel activity, or may dive when approached by a vessel (MMS 2007a).
Turtles engaged in feeding are at less of a risk for collision, as
they spend most of their time submerged. Loggerhead and Kemp’s
ridley turtles are bottom feeders, so spend most of their time well
below the surface, but leatherback turtles feed at or near the
surface, and so are at greater risk of collision (MMS 2009a).
4. Lights from construction
activities during non-daylight hours could affect sea turtle
hatchlings, which are known to be attracted to light (MMS 2007a).
However, sea turtle hatchlings are not expected to be found within
the SAMP area, as sea turtles do not nest in this area.
D. Electromagnetic fields
(formerly § 850.6.3)
1. Sea turtles have been found
to use the earth’s geomagnetic field for orientation and migration
(MMS 2007a). However, the Cape Wind FEIS anticipated no adverse
impacts from electromagnetic fields on sea turtles (MMS 2009a).
Electromagnetic fields may have potential effects on some fisheries
resources; see § 8.4.7(D) of this Part below for further
information.
E. Reef effects (formerly §
850.6.4)
1. The potential reef effects
of the turbines, attracting finfish and benthic organisms to the
structures, could affect sea turtles by changing prey distribution or
abundance in the Ocean SAMP area. Sea turtles that eat benthic
invertebrates, particularly loggerhead and Kemp’s ridley turtles,
which consume crustaceans and mollusks, may be attracted to the
structures as an additional food source. Sea turtles may also be
attracted to wind turbine structures for shelter; loggerheads in
particular have been observed using oil rig platforms for this
purpose (NRC 1996 in MMS 2009a). Loggerheads are the species most
likely to be attracted to the wind turbines for both food and
shelter, and they are frequently observed around wrecks and
underwater structures (NRC 1996 in MMS 2009a). For more on reef
effects, see § 8.4.3(D) of this Part, Reef Effects and Benthic
Ecology.
8.4.7 Fisheries Resources
and Habitat (formerly § 850.7)
A. Offshore renewable energy
development may have several potential effects on fisheries resources
and habitat. Generally, the effects of offshore renewable energy
projects on fisheries resources are difficult to interpret given the
lack of scientific knowledge and consensus in several relevant
subject areas. Given the information available, potential effects to
fisheries resources and habitat are discussed below in general terms,
but it is important to note that site-specific impacts of an offshore
renewable energy project in the Ocean SAMP area will require
separate, in-depth evaluation as part of the permitting process. It
also must be noted that if threatened or endangered species are found
in the project area, additional consultation with relevant federal
agencies in accordance with the Endangered Species Act would be
necessary to evaluate any potential impacts to these species (MMS
2007a). For areas where Essential Fish Habitat has been designated,
the Magnuson-Stevens Fishery Conservation and Management Act requires
federal agencies to consult with the National Marine Fisheries
Service (MMS 2007a). See Chapter 5, Commercial and Recreational
Fisheries for more information on endangered or threatened fish
species and on Essential Fish Habitat. See also Chapter 10, Existing
Statutes, Regulations and Policies for more information on the ESA as
well as the Magnuson-Stevens Fishery Conservation and Management Act.
B. With regard to fisheries
resources, potential effects may take place at any phase of the
project, including pre-construction testing and site
characterization, construction, operation, and decommissioning. Some
of these effects may include, but are not limited to: underwater
sound associated with increased vessel traffic, scientific surveys,
construction, operation, and decommissioning; electromagnetic fields
created by the cables connecting the turbines and carrying the
electricity to land; construction-related habitat disturbance; water
quality impacts; changes in benthic community composition; other
effects of structures, including the reef effect; and the effects of
decommissioning offshore renewable energy developments.
C. Underwater sound (formerly
§ 850.7.1)
1. As noted above in §
8.4.5(H) of this Part, an offshore renewable energy project would
generate underwater sound in all phases of development. Noise
generated by pile driving activities during construction may be most
significant and potentially harmful to fish individuals and then onto
populations. For more detailed information on sound produced in the
construction and operation of an offshore wind facility, please see §
8.4.5(H) of this Part, Effects of Noise on Marine Mammals.
2. Fish vary greatly in their
hearing structures and auditory capabilities, so it is difficult to
generalize about the effects of noise generated by wind farm
construction and operation on fish. There is lack of knowledge about
the hearing capacities of most fish species. Certain fish species are
thought to be hearing specialists, and may have enhanced hearing
sensitivity and bandwidth, while others may be hearing generalists,
and may be less sensitive to sound (Popper and Hastings 2009).
Similar to marine mammals, the effect of noise will depend on the
overlap between the frequency of the noise and the level of hearing
of the species, and whether the sound exceeds the level of ambient
noise (Thomsen et al . 2006). The impact of the sound produced
will also vary greatly depending upon the environmental setting and
conditions at the time and place where the sound is being produced
(Popper et al . 2006).
3. The potential effects of
sound from wind farm surveying, construction, decommissioning, and
operation, on fish can be divided into three general categories:
a. temporary or permanent
hearing damage or other physical injury or mortality;
b. behavioral responses; for
example, the triggering of alarm reactions, causing fish to flee or
interrupting activities necessary for survival (e.g. feeding) and
reproduction, and potentially inducing stress in the fish;
c. masking acoustic signals,
which may be communication among individuals, or may be information
about predators or prey (Thomsen et al . 2006).
4. As noted in 8.4.5(H) of
this Part, activities in the pre-construction phase generating
underwater noise may include side-scan sonar and air guns used in
seismic surveying. Studies on fish exposed to air gun blasts have
found damage to sensory cells in the ear. While air guns are not
likely to be used in the construction or operation of wind farms,
they may be used in pre-construction seismic surveys for determining
geological hazards and soil conditions in siting a wind farm (MMS
2007a). Side-scan sonar is likely to have little impact on fish, as
it is unlikely to cause hearing impairment or physical injury (MMS
2007a).
5. The construction phase is
most likely to produce levels of sound that could generate temporary
and permanent hearing loss for fish near the source. Injuries of
tissues or auditory organs can also occur at close range. Pile
driving creates an impulsive sound when the driving hammer strikes
the pile, resulting in a rapid release of energy (Hastings and Popper
2005). Peak sound levels produced by pile driving have been measured
at anywhere from 228 dB re-1 ?Pa to 257 dB re-1 ?Pa, at frequency
levels ranging from 20 to more than 20,000 Hz; peak sound levels will
vary depending on pile size, material, and equipment used (see Table
8.17 in § 8.4.5(H)(3)(a) of this Part). Only a handful of studies
have been conducted on fish in the vicinity of pile driving, and
while some have found evidence of injury or mortality in the fish
near the source of the sound, others have found no mortality or
injury. One study of pile driving found fish of several different
species were killed within at least 50 m [164 feet] of the pile
driving activity; it also found an increase in the number of gulls in
the area, indicating additional fish mortality (Caltrans 2001).
Another study found that the noise levels produced by pile driving
during wind tower construction and cable-laying could damage the
hearing of species within 100m [328 feet] of the source (Nedwell et
al . 2003).
6. Impacts to fish from sound
can be in the form of damage to organs such as the swim bladder, or
damage to the auditory sensor in the ears. Sound can also cause
permanent or temporary threshold shift in hearing (PTS or TTS
respectively), meaning fish lose all or part of their hearing, on
either a permanent or temporary basis. There is some evidence that
fish, unlike mammals, can repair their sensory cells used for
hearing, and may recover from hearing loss caused by underwater
noise. Popper et al . (2005) found the effects from even
substantial TTS to have worn off for fish within eighteen hours of
exposure. However, hearing loss, even if temporary, could render the
fish unable to respond to environmental sounds that indicate the
presence of predators or that allow the location of prey or potential
mates (Popper and Hastings 2009).
7. A review and modeling study
conducted by Thomsen et al . (2006) based on measurements of
wind turbines in the German Bight and Sweden found that sound levels
created during pile driving for construction of wind turbines was
loud enough to be heard at long distances by some fish species -
perhaps as far as 80 km [49.7 mi] from the source for cod and
herring, which are considered to be sensitive to sound. Salmon and
dab, which have a poor sensitivity for sound pressure, could in
theory detect pile driving sound over large distances as well.
Flatfish might detect sound that is partly transported through the
sediment. Pile driving noise may have the effect of masking other
biological noises out to this distance. The nature and scale of
behavioral response cannot be determined; however, behavioral
responses to the construction noise might happen anywhere within the
zone of audibility and could affect fish reproduction and population
levels if biologically important activities such as migration,
feeding, and spawning are interrupted. The authors determined that
injury and mortality may occur in the vicinity of the activity
(Thomsen et al . 2006). One playback study of pile driving
sounds at relatively low pressure levels found sole to increase their
swimming speeds during the playback, while cod were found to freeze
their movements at the start of the playback (Mueller-Blenkle et
al . 2010). While studies have generally found that impacts on
fish will decrease the further from the source of the sound, this
effect is not clearly understood because the relationship between
distance and sound level is not straightforward. In some cases sound
levels may be higher at some distances from the source due to
propagation through the seabed and sound reflections from objects
(Hastings and Popper 2005).
8. The relationship between
sound exposure and physiological damage with regard to fish is not
well understood, and more research is required to determine the
potential effects of pile driving on fish (Thomsen et al .
2006). Little is known about potential long-term effects, including
later death from injury, predation, or behavioral changes that may
affect the individual fish or their populations, nor have studies
examined the potential cumulative impacts from pile driving. The
effects that noise may have on eggs and larvae have been little
studied. Research is also lacking on the impacts on fish at larger
distances from the source, where they are unlikely to be killed but
may suffer from other physiological effects such as damage to the
swim bladder or internal bleeding (Hastings and Popper 2005).
9. The noise created during
the construction and decommissioning processes may cause some fish
species to leave the area. This could cause a disruption in feeding,
breeding, or other essential activities, and may have significant
impacts if fish are removed from a spawning area. Less mobile species
are likely to be more susceptible (Gill and Kimber 2005). The effect
on fish populations would be greater if they are dispersed during the
times of year when they would be naturally congregating for spawning
or other purposes (Gill and Kimber 2005). Thus, effects will be
determined in part by the timing of the project, such as the time of
year when the noise disturbance occurs and for how long it occurs.
Some studies have found that fish displaced from an area by noise
during construction processes are likely to return following
construction activity (Hvidt et al . 2006 referenced in MMS
2007a). This may be dependent upon duration of the construction
project; if construction occurs over a prolonged period, some fish
species may not return. The length of time will in turn be dictated
by a number of factors including the number of turbines, the
availability of vessels, and access to the site as a result of
weather conditions. The cumulative effects are likely to be more
significant for a larger wind farm where more turbines would be
constructed and the period of construction is longer. Miller et
al . (2010) predicted that pile driving activity within the Ocean
SAMP area could have observable behavioral effects on fish within
4000 m (2.5 miles) of the pile driving activity. As described in §
8.4.5(H) of this Part, this analysis was calculated for a 1.7 m [5.5
foot] diameter pile (similar to those used in lattice jacket
structures) driven into the bottom with an impact hammer. If
explosives were used in the decommissioning process, the noise
produced could have a serious impact on any marine life within 500 m
(0.3 miles) of the activity (Miller et al . 2010) (see § 8.4.5
of this Part for more information).
10. Fish of different species
produce a variety of sounds, many of which may be used for mating or
other communication purposes. The sounds produced by wind turbines,
particularly in the construction phase, may mask some of these sounds
produced by fish, as the frequencies of pile driving and fish signals
overlap. For example, cod, which are found in the Ocean SAMP area,
produce a number of grunting sounds that are used in defensive and
aggressive behaviors, and in courting mates. Masking these sounds
with construction noise could have implications for mating and other
behaviors. Because the transmission of the sounds could be audible by
some species over great distances, the masking effects may also occur
over great distances (Thomsen et al . 2006). The effect may
depend on the signals produced by the fish; in species where only a
single sound makes up a communication signal the effect may be
negligible, because the duration of the pile driving sound is very
short. However, some fish produce sequences of sounds that might be
disrupted by pile driving pulses. Where a large number of turbines
are being installed and the length of construction is longer, the
masking effect may be appreciable (Thomsen et al . 2006). The
noise produced in construction and operation could also mask the
sounds of approaching predators or prey. Detecting those sounds may
be crucial for survival (Wahlberg and Westerberg 2005). However,
because neither the hearing capabilities of most fish nor the
function of sounds produced by the fish is well understood, the
effects of masking cannot yet be determined (Thomsen et al .
2006).
11. One potential effect on
fish from noise could be stress; while this is difficult to quantify,
some studies have shown that exposure to stressors can result in
opportunistic infections, or may make fish more susceptible to
predation or other environmental effects. Some studies on fish
exposed to noise found no significant change in stress levels, but
these results cannot necessarily be extrapolated to predicting the
overall effects of exposure to noise on fish stress levels (Popper
and Hastings 2009).
12. If the effects of noise on
fish are poorly understood, the effects on invertebrates are even
less well understood. One study found that shrimp demonstrated
decreases in growth and reproductive rates when exposed to noise for
an extended period (Popper and Hastings 2009).
13. Research on existing
offshore wind farms in the Baltic Sea has found that the operation of
the turbines adds to the existing array of underwater sound, and that
the acoustic disturbance caused by the turbines is most likely a
function of the number of turbines and their operation procedure
(studies reviewed by Gill 2005). As noted above, operational noise
produced by wind turbines is significantly less than the levels of
noise produced during the construction phase. Even within ten meters
of the turbine, the noise created is not likely to be sufficient to
cause temporary or permanent hearing loss in any species of fish
(Wahlberg and Westerberg 2005). One study found that the noise
created by a 1.5 MW turbine was merged with ambient noise within one
kilometer from the source (Thomsen et al . 2006). Miller et
al . (2010) predicted that within the Ocean SAMP area where eight
wind turbines are proposed south of Block Island, the operational
noise of the turbines would contribute 424 pW/m2 or 88 dB re 1 mPa of
additional noise, significantly less than the noise produced by
shipping, wind, and rain in the area. This level would be greater
than ambient noise within one kilometer (0.6 miles) of the source,
and would be below ambient noise levels at a distance of ten
kilometers (6 miles) from the source (Miller et al . 2010).
Underwater noise created by offshore wind turbines in Europe has been
measured at 118 dB re 1 mPa2 for a 1/3 octave band at a range of 100
meters during full power production (Betke et al . 2004).
14. Thomsen et al .
(2006) predicted the noise generated by wind turbine operation might
be heard up to four or five kilometers from the source by fish with
exceptional hearing such as cod and herring, and maybe less than one
kilometer by fish with less specialized hearing capabilities such as
dab and salmon. Any behavioral or physiological effects on fish for
levels of noise created by turbine operation would likely be
restricted to very short ranges (Thomsen et al . 2006).
However, it is important to note that most of these studies have been
for 1.5 MW turbines, while those proposed for the Ocean SAMP area
would likely be 3.6 or 5.0 MW. Additional studies are needed on the
noise levels generated by these larger turbines.
15. As noted above, another
source of sound from wind turbine projects is ship traffic, from
ships carrying parts and maintenance equipment during the
construction, operation, and decommissioning processes. The noise
levels of sound created by vessels will not cause physical harm to
fish, but may cause avoidance of the area (MMS 2007a). The duration
of avoidance may be determined by the duration of construction
activity and the accompanying period of increased vessel traffic.
D. Electromagnetic fields
(formerly § 850.7.2)
1. Producing electricity with
a wind turbine requires it to be moved over long distances by means
of a submarine cable. The transmission is either via high voltage
Direct Current (DC) or Alternating Current (AC) cables, with AC being
the favored for short distances and DC for longer distances between
the project and shore. These cables will necessarily produce magnetic
fields around the cables. The intensity of the magnetic field
increases with the electric current, and decreases with distance from
the cable. The design of industry standard AC cables prevent electric
field emissions, but do not prevent magnetic field emissions. These
magnetic emissions induce localized electric fields in the marine
environment as sea water moves through them. Furthermore, in AC
cables the magnetic fields oscillate, and thereby also create an
induced electric field in the environment around the cables,
regardless of whether the cable is buried. Thus the term
electromagnetic field, or EMF, refers to both of these created fields
(Petersen and Malm 2006).
2. Exposure to magnetic fields
is not unique to undersea cables; the earth has its own geomagnetic
field, which many organisms utilize for orientation. Little is
understood about the orientation of animals in response to the
geomagnetic field, but evidence of geomagnetic orientation has been
observed in a number of marine species, including fish, mollusks, and
other crustaceans. In laboratory experiments conducted on a number of
different marine animals in response to static magnetic fields
generated by electrical current, most demonstrated no short-term
change in behavior when the magnetic field was introduced. In one
experiment by Bochert and Zettler (2004) where several organisms were
exposed to EMF generated by a DC power source, of four crustacean
species, blue mussels, and flounder studied, only one crustacean
species, an isopod, demonstrated any avoidance of the magnetic field.
In other experiments by the same authors on the long-term effects of
magnetic fields on crustaceans and flounder, no significant effects
were demonstrated. The authors conclude that the static magnetic
fields of submarine cables produced by DC currents have no clear
influence on the orientation, physiology, or movement of the benthic
animals they tested (Bochert and Zettler 2004).
3. However, some evidence
exists supporting the argument that EMF may have detrimental effects.
Other studies have shown that some species of sharks, rays, and bony
fishes detect electromagnetic fields and have demonstrated
sensitivity to these EMFs (Gill et al . 2005). The induced
electrical fields created by the magnetic fields from the cables are
within the range of electrical transmissions detectable by sharks and
rays (Gill and Kimber 2005). Exposure to certain magnetic fields was
found to delay the development of embryos in fish and sea urchins
(Cameron et al . 1985; Cameron et al . 1993; Zimmerman et
al . 1990). Barnacle larvae exposed to high frequency AC EMF were
found to retract their antennae, which would interfere with
settlement (Leya et al . 1999). In another study, brown shrimp
(Crangon crangon) were found to be attracted to magnetic fields of
the magnitude that would be expected to be present around wind farms
(ICES 2003). Little is known about the effects of EMF on lobsters.
However, because effects have been demonstrated on brown shrimp and
other crustaceans, an effect on lobsters can be anticipated.
4. Species using the Earth’s
magnetic field for navigation or orientation may be affected by the
EMF, possibly becoming confused, but this effect will likely be
short-lived as the animal moves through the area. Species that are
magnetosensitive may either be attracted to or avoid the area (Gill
2005). If elasmobranchs (sharks, rays or skates) and other fish are
sensitive to the electromagnetic fields and avoid passing over the
cables, this could prevent movement from one location to another,
trapping fish either within our outside of the cables (BMT Cordah
Limited 2003). It is generally thought that the magnetic fields
created by the cables will be much lower than the earth’s
geomagnetic field and will therefore cause no significant response
(Gill and Kimber 2005). One study on the European eel ( Anguilla
anguilla ) found that eels significantly decrease their swimming
speed when passing over an AC cable (Westerberg and Lagenfelt 2008).
A study of cables at Danish wind farms found some effects on fish
behavior from the presence of the cables, but the effects included
both avoidance and attraction, and could not be correlated with the
strength of the EMFs (DONG Energy et al . 2006). Catch studies
on some species of fish (Baltic herring, common eel, Atlantic cod and
flounder) at the Nysted wind farm in Denmark found the catches of
these species were reduced in the vicinity of the cables, indicating
the migration of fish across the cables may be reduced, but not
blocked. In a separate study, they also found cod accumulating close
to the cables however this was not when the cables were energized so
there may be some other stimuli that the fish were responding to such
as the physical presence of the cable trench (DONG Energy and
Vattenfall 2006).
5. If the electric fields
being emitted by the cables approximate the bioelectric fields of
some species, there is a possibility that certain electro-sensitive
species, particularly elasmobranchs (sharks, skates, and rays) and
sturgeon species, will be attracted to the cables, thinking them to
be prey. The same species may be repelled by stronger electric fields
closer to the cables, depending on the power sent through the cable
and the characteristics of the cable itself. Because the cables will
be buried in sediment or laid along the bottom, benthic species are
most likely to encounter them (Gill and Kimber 2005). There is one
report of sharks biting an unburied cable on the seafloor that was
emitting induced AC electric fields (Marra 1989); however, there is
little other data on interactions between sharks or other species and
cables.
6. Miller et al . (2010)
predict the electromagnetic fields that would be produced by the 26
kVA power cables likely to be used for the wind turbines proposed
south of Block Island could have behavioral effects on marine life
within 20 m (66 feet) of the cables.
7. There is no conclusive
evidence at present on whether EMFs may have an impact on marine
species (Johnson et al . 2008). However, because the effects of
electromagnetic fields on fish and other species are poorly
understood, more research is needed in this field. The effects of
EMFs on species present within the Ocean SAMP area should not be
assumed until further research is completed. It is not known whether
resident species will be able to habituate to EMF, but this could be
important for helping to determine appropriate mitigation measures.
E. Habitat disturbance
(formerly § 850.7.3)
1. Disturbance to existing
habitat is likely to result through the construction of offshore
renewable energy infrastructure. Here, habitat disturbance is used
broadly to refer to sediment disturbance and settling; increased
turbidity of the waters in the construction area; and the
installation of infrastructure including piles, anti-scour devices,
and other structures (MMS 2007a). The period of time and the extent
of the disturbance, and thus its severity, will depend on the size of
the wind farm and the amount of time necessary to construct it. For
the proposed large-scale project in the Ocean SAMP area, this is
likely to be a year or two. The total area of the seafloor affected
will be only a small percentage of the entire Ocean SAMP area;
however, the overall effect will depend in part upon the relative
prevalence or scarcity of the habitat type(s) affected, and the
availability of similar habitat in the adjacent area. For more on the
effects of offshore renewable energy on habitat and the benthic
ecology of the Ocean SAMP area, see § 8.4.3 of this Part.
2. The construction of wind
turbines is likely to have both short- and long-term effects on
habitat. Habitat conversion and loss can result because of physical
occupation of the substrate, and includes both changes to existing
habitat and the creation of new habitat. Scour protection around the
structures, which is made up of rock or concrete mattresses,
increases the loss or conversion of habitat (Johnson et al .
2008). Direct effects to the seabed are likely to be limited to
within one or two hundred meters of the structure, and there are
likely to be areas between turbines which remain undisturbed (OSPAR
2006). For more on the creation of new habitat, see §§ 8.4.7(I)
(Reef Effects and Fisheries) and 8.4.3(D) (Reef Effects and Benthic
Ecology) of this Part.
3. Construction of the wind
turbine foundations and the installation of cables can result in
increased turbidity in the water column as well. This may in turn
affect primary production of phytoplankton and the food chain, which
could lead to an increased likelihood of eutrophic conditions.
However, these effects are likely to be short-term and localized, and
the overall impact on fish resources would be negligible (MMS 2007a).
Removal of sediments may result in habitat loss (Gill 2005). These
are generally short-term impacts which will subside once construction
has been completed (Johnson et al . 2008). Any sediment
resuspended in the construction or decommissioning processes are
likely to be transported by water movement, and may smother the
neighboring habitats of sedimentary species. These sediments may also
carry contaminants with them if the area has a history of industrial
processes emitting into the adjacent waters (Gill 2005).
4. The interference in water
flow caused by the wind turbine substructures may accelerate local
tidal currents and wave action around the structures, forming scour
holes in the sea bed adjacent to the pilings. These holes may be
attractive habitat to species such as crab and lobster, and to some
fish species (Rodmell and Johnson 2005).
5. Additional impacts from
wind turbines would come from the eventual decommissioning and
removal of the undersea structures, immediately reducing habitat
heterogeneity and removing a large component of the benthic community
that has established since the wind farm has been in operation (Gill
2005).
6. The installation and burial
of submarine cables causes temporary habitat destruction through
plowing and from barge anchor damage, and can cause permanent habitat
alteration if the top layers of sediment are replaced with new
material during the cable-laying process, or if the cables are not
sufficiently buried within the substrate. Likewise, cable repair or
decommissioning can impact benthic habitats. The effect of the cables
will depend on the grain size of sediments, hydrodynamics and
turbidity of the area, and on the species and habitats present where
the cable is being laid (OSPAR 2008). Undersea cables can also cause
damage if allowed to “sweep” along the bottom while being placed
in the correct location. The most serious threats are to submerged
aquatic vegetation, which serves as an important habitat for a wide
variety of marine species. Shellfish beds and hard-bottom habitats
are also especially at risk (Johnson et al . 2008).
7. The placement of wind
turbines, especially in large arrays, may affect flow regimes by
altering tidal current patterns around the structures, which may
affect the distribution of eggs and larvae (Johnson et al .
2008). Because the structures are likely to affect currents, the
settlement of new recruits may be locally affected. These effects on
habitat will be most harmful if they affect the spawning or nursery
areas of species whose populations are depleted, especially if the
spawning or nursery areas used by these species are limited and the
species have long maturation periods, such as sharks and skates (Gill
2005). A study of turbines in Danish waters found little to no impact
on native benthic communities and sediment structure from a change in
hydrodynamic regimes (DONG Energy et al . 2006). For more on
the effects of wind turbines on coastal processes, see § 8.4.2 of
this Part.
F. Water quality impacts
(formerly § 850.7.4)
1. Offshore renewable energy
facilities would result in increased vessel traffic through the
pre-construction site characterization, construction, operation, and
decommissioning phases. The PEIS indicates that such an increase in
traffic could increase the likelihood of fuel spills as a result of
vessel accidents or mechanical problems, though it indicates that the
likelihood of such spills is relatively small because of the small
amount of vessel traffic that would be associated with the project
(MMS 2007a). The risk of fuel spills could also increase because of
the increased likelihood of vessel collisions with the wind turbine
structures.
2. Wastewater, trash, and
other debris can be generated at offshore energy sites by human
activities associated with the facility (in construction and
maintenance processes). The platforms may hold hazardous materials
such as fuel, oils, greases, and coolants. The discharge of these
contaminants into the water column could affect the water quality
around the facility. Large-scale offshore renewable energy projects
are likely to have one or more transformers, which will contain
dielectric fluid, such as mineral oil, which could pose a threat to
water quality through leakage or in the event of a collision (MMS
2009a). Vessels traveling to and from the platforms may dump gray
water or sewage, or may release plastics and other debris (Johnson et
al . 2008).
3. Water quality may also be
impacted during the construction process by re-suspending bottom
sediments, increasing the sedimentation within the water column. This
may impact the abundance of planktonic species, and could lead to
eutrophication.
G. Changes in community
composition (formerly § 850.7.5)
1. Wind energy and other
offshore renewable energy projects could have indirect ecological
effects that could affect the composition of fish species within the
area. During the construction and decommissioning phases of a
project, highly mobile fauna, including fish and large crustaceans,
are likely to be displaced from the area, and there may be changes to
some habitats, either through habitat loss or through enhancement.
These factors may affect the composition of species found in the
area. For more on the effects of changes in community composition,
see § 8.4.3(E) of this Part.
2. During the construction and
decommissioning phases of a project, the eggs and larvae of many
species of fish may be vulnerable to being buried or removed. Some
species, such as herring and sand eels, lay their eggs in the
substrate; if wind farm construction took place within the spawning
grounds of these species, it would likely impact the species (BMT
Cordah Limited 2003). Other benthic organisms may also be buried in
the process, which could affect finfish and shellfish that rely on
these organisms for food. Individual fish are likely to move out of
the area during construction because of the disturbance and because
of the loss of food (MMS 2007a). After the activity has ceased,
recolonization may take months or years (Gill 2005).
3. No detailed, long-term
analyses have yet been conducted on entire fish assemblages around
either decommissioned oil platforms (a suitable comparable
development of the coastal environment) or wind energy projects
(Ehrich et al . 2006). Ehrich et al . (2006) hypothesize
that any effects on fish densities and diversity resulting from newly
installed wind turbines will be restricted to the immediate vicinity
of the structures, and will not have wide-reaching effects, unless
rare species are directly affected, which could have effects at the
population level. The authors also note that in cases where wind
turbines are constructed in areas with a sandy bottom, there may be
localized removal of species dependent on soft-bottom habitat,
favoring species which prefer hard bottoms, as the hard structures
serve as habitat for these species. As most wind farms thus far have
been constructed in areas of sandy bottom, there is little data on
changes to other types of benthic habitats. They suggest that the
wind farms will also favor large predators, particularly if fishing
pressure among the turbines is reduced (Ehrich et al . 2006).
4. There may also be changes
in predator-prey relationships, in which some predators move out of
the area temporarily or have their numbers temporarily reduced during
the construction phase. This can result in the process of competitive
release, in which species preyed upon by these predators become
available to other predators. Often it is smaller species with faster
rates of reproduction that will replace existing species. This could
have secondary effects elsewhere, if the numbers of predators
increase outside of the area of development (Gill and Kimber 2005).
5. The decommissioning of wind
turbines would also have significant ecological effects, as the new
habitat and accompanying species are removed. Habitat heterogeneity
and the abundance of species would be reduced.
H. Structures (formerly §
850.7.6)
1. Organisms may either
collide with or avoid the wind turbine structures underwater. While
little information is available regarding this topic, the greatest
impacts are likely to be within enclosed waters or where the devices
form a barrier to movement (Gill 2005); thus collision and avoidance
are not likely to be major impacts of the proposed wind turbines in
the Ocean SAMP area.
I. Reef effect (formerly §
850.7.7)
1. As noted above in§
8.4.3(D), wind turbine structures may serve as both artificial reefs,
in providing surfaces for non-mobile species to grow on and shelter
for small fish, and as fish aggregating devices, which are used to
enhance catches by attracting fish (Wilhelmsson et al . 2006).
2. After the wind turbines are
in place, a change in the type and abundance of benthic species can
be expected, which will change food availability for higher trophic
levels. Because the placement of wind turbines may increase habitat
for benthic species, the structures may have the effect of increasing
local food availability, which may bring some species into the area.
This may increase use of the area by immigrant fauna. More adaptable
species will probably dominate the area under these new ecological
conditions. The change in prey size, type, and abundance in the
vicinity of the structures may also affect predators. Predators
moving into the area may result in prey depletion (Gill 2005).
3. Oil and gas platforms have
been found to harbor large numbers of larval and juvenile fish, and
wind turbine support structure can be expected to have a similar
effect. Because the structures extend throughout the water column,
juvenile or larval fish are more likely to encounter them than other
habitat types found only on the bottom, and may be more likely to
settle there. There may also be less predation on small fish in
midwater habitats, so they can safely hide in the structure at a
variety of depths (Love et al . 2003). Fish can take advantage
of the shelter provided by the structures while being exposed to
stronger currents created by the structures, which generate more
plankton for plankton-eating fish (Wilhelmsson et al . 2006).
While colonization of the new structures will begin shortly after
construction, it will usually take several years for the colonization
to be completed, because not all species will colonize the area at
once (DONG Energy et al . 2006) and there will be a succession
of species and a likely increase in species using the newly formed
community hence increasing diversity.
4. Wind turbines may also
provide refuge from predation for juveniles of a number of mobile
species, which is critical in promoting growth and survival until
they reach maturity. Similarly, the structures may also provide
refuge for both large and small fish and other species from fishing
pressure. In the UK, where fishing is currently not permitted around
the structures, they are being promoted as protected areas, and may
eventually contribute to stock replenishment for some species. These
structures have not yet been in the water long enough to see these
effects; however, many of the juvenile fish found around the turbines
are small Gadoid species such as cod. Additionally, if there is an
absence of trawling and dredging between the wind farms, it may
result in increases in benthic fauna (DONG Energy et al . 2006;
Kaiser et al . 2000). Even if fishing is permitted, most
fishermen are unlikely to fish immediately next to the turbines
because of the possibility of having gear tangled in the structures
(see § 8.4.8 of this Part). In oil and gas platforms, fish that
remain within the jacketed structures may be less vulnerable to
fishing pressure than others (Love et al . 2003). In addition
to fish, these structures may also provide important habitat for
lobsters and crabs. Young, newly-settled individuals of these species
typically seek out refuge to avoid predation, including hiding among
stones and cobbles, or burying in sediments. Wind turbines and scour
protection may provide suitable hiding places for these individuals,
and may enhance the lobster fishery in cases where habitat is a
limiting factor (Linley et al . 2007).
5. A number of studies of
decommissioned oil platforms have indicated fish are attracted by the
structures (Ehrich et al . 2006). A study conducted on oil and
gas platforms off the Californian coast found that the platforms
tended to have higher abundances of large, commercially targeted fish
than did natural reefs. This result may have been because of low
fishing activity around the platforms, creating de facto marine
protected areas. Generally, the platforms also had higher numbers of
young-of-the-year rockfish than other areas, including natural reefs
(Love and Schroeder 2006). One study noted the tendency of large,
recreationally targeted species such as tunas and mackerel to
associate with fish aggregating devices, and predicted wind turbines
might have the same effect (Fayram and de Risi 2007). A study of
decommissioned oil rigs in the North Sea off Norway found
aggregations of cod, mackerel, and other species around the
structures (Soldal et al . 2002).
6. The observed effect of
other wind turbines has found some species are attracted to wind
farms. A study of wind farms in Danish waters found the increased
habitat heterogeneity from turbine foundations resulted in an
increase of species from adjacent hard surfaces, leading to a local
increase in biomass of 50 to 150 times, most of which served as
available food for fish and seabirds (DONG Energy et al .
2006). Monitoring of the Horns Rev wind farm in Denmark found a 300%
increase in the number of sand eels around the wind turbines between
2002 and 2004, and an eight-fold increase in the availability of food
for fish in the area, but not a statistically significant difference
in the number of fish (DONG Energy and Vattenfall 2006). Another
study found an increased number of cod in the area surrounding wind
turbines at the Vindeby Offshore Wind Farm in Denmark (Bioconsult A/S
2002). Some studies have not found an increase in fish around
structures; this may be because the studies were conducted during the
early stages of colonization (DONG Energy et al . 2006).
7. One question to be
determined about wind turbines is whether they actually increase fish
populations by providing habitat, or simply attract fish from
elsewhere, concentrating them in the area of the structure. If
individual fish are being attracted to the site, but populations are
not increasing, this may have impacts on adjacent habitats where the
fish would ordinarily be found (Gill 2005). If the structures serve
only to aggregate fish and not to produce additional biomass, there
is a risk of harvesting pressure around the structures leading to
overexploitation of certain stocks by concentrating the fish and
leaving them more vulnerable to harvesting (Whitmarsh et al .
2008).
8. Love and Schroeder (2006)
found that in some instances, the fish found at the platforms were
producing significant amounts of larvae that may have been increasing
populations around the platforms and elsewhere. They also found that
while some of the fish present around oil and gas platforms were
adults of species that had likely migrated from elsewhere, the
majority of individuals for many species were small juveniles that
had likely been brought to the platforms as plankton and settled
there (Love et al . 2003). Love and Schroeder (2006) also found
that juvenile fish living around oil and gas platforms had lower
predation rates than fish living on natural reefs, because of a low
density of predators in the mid- and upper waters around the
platforms, and that there appeared to be no difference in growth
rates between fish living on platforms or on natural reefs.
J. Decommissioning effects
(formerly § 850.7.8)
1. As discussed above, wind
turbine structures may serve as artificial reefs, providing habitat
for a number of invertebrate and fish species, especially juvenile
fish. As such, the eventual decommissioning of the turbines could
have negative environmental impacts by reducing or removing this
habitat. While this issue has not yet been dealt with for offshore
wind energy projects, the debate over how to best decommission oil
and gas platforms has been ongoing in California and the Gulf of
Mexico. For oil and gas platforms, it is estimated that the life of a
decommissioned platform left in place will be from 100 to more than
300 years (Love et al . 2003). A large-scale wind farm will
occupy more seabed space than individual oil and gas rigs, and thus
the area of the ocean floor affected by both construction and
decommissioning will be larger than for oil and gas rigs. The
decommissioning of the wind turbines and the resulting effects on
fish and fisheries should be considered.
8.4.8 Commercial and
Recreational Fishing (formerly § 850.8)
A. Offshore renewable energy
may affect commercial and recreational fisheries activity in many
different ways. Some of the potential effects on fishermen from the
placement of a wind farm in the Ocean SAMP area may include changing
the distribution and/or abundance of fish populations, increasing
stocks of certain fish through reef effects; limiting fishermen’s
access to traditional fishing grounds; gear or vessel damage; and
other changes to fishing activities. These general types of effects
are discussed below, though specific effects are dependent on
site-specific conditions such as location, type and scale of project,
and other factors. The potential site-specific effects of an offshore
renewable energy project in the Ocean SAMP area will undergo in-depth
evaluation as part of the permitting process (see Section 820.4 and
Chapter 10, Existing Statutes, Regulations and Policies).
B. Effects on fish populations
(formerly § 850.8.1)
1. Some fish species,
especially rare or overfished species, could be negatively affected
by the presence of wind farms if the wind farms result in a localized
concentration of fishing effort and an increased harvest if the
species are attracted to the structures. Alternatively, the increased
habitat for some species created by the structures may result in
increased populations of commercially important species (see §
8.4.7(I) of this Part), leading to economic gains for commercial
fishermen targeting these species (BMT Cordah Limited 2003), and
increased opportunities for recreational anglers, who are likely to
focus their efforts around the wind turbines.
2. There is also the potential
for secondary effects on fish populations if fishermen are displaced
from the wind farm area, and as a result concentrate their efforts
elsewhere on vulnerable populations or habitats (BMT Cordah Limited
2003). Likewise, if the wind turbines serve as fish aggregating
devices, attracting and concentrating fish from elsewhere in the
Ocean SAMP area, and attracting more commercial and recreational
fishing activity to the area to take advantage of the aggregation, it
could have the undesired outcome of leaving fish species more
vulnerable to overharvesting from more concentrated fishing effort
(Whitmarsh et al . 2008).
3. Fish populations could be
affected by some or a combination of the factors listed in § 8.4.7
of this Part, such as noise or electromagnetic fields, which could
potentially have effects at the population levels if activities such
as spawning or feeding are affected. Some fish populations could also
be affected by a change in benthic habitat as some areas of the
seafloor are converted to hard structures. The cumulative effects of
the factors mentioned above may also need to be considered. For more
on the ways in which wind farms may affect fish, see § 8.4.7 of this
Part.
C. Effects on fish catch
(formerly § 850.8.2)
1. Negative impacts to fish
catches may be greatest during the construction phase, when the noise
generated by construction activities may drive some mobile species
out of the immediate area.
2. Engås et al . (1996)
found the average catch rates for cod to decrease by about 50% both
in the immediate vicinity of and at a distance from air gun activity.
Haddock catches also decreased by similar percentages. Five days
after the air gun was used, fish catches had not increased. However,
as noted above, air guns are unlikely to be used in the
pre-construction siting process.
3. Positive impacts to fish
catch may occur during the operational phase as a result of reef
effects if there is a resulting increase in or aggregation of biomass
around the turbine structures. If there is an increase in fish in the
vicinity of the turbines, this could benefit fishermen, particularly
recreational and commercial rod and reel fishermen, who may be most
easily able to target these fish.
4. Westerberg (1994, 2000, as
reported in Thomsen et al . 2006) found that catches of cod
decreased within 100m [328 ft] of a wind turbine while it was
operating, likely because of the noise generated by the turbine
itself. The study also found higher catches within 100m [328 ft] of
the turbines than in the surrounding areas when the turbines were
stopped, likely because of the reef effect (for more on the reef
effect and fisheries, see § 8.4.7(I) of this Part). However, in a
separate study, Wahlberg and Westerberg (2005) estimated that the
levels of noise produced by operating turbines (1.5 MW) were only
likely to cause avoidance responses by fish closer than 4 m [13 ft]
to the turbines and only at high wind speeds (13 m/s [29.1 mph]).
They also noted that fish may habituate to the noise created by the
wind turbines and disregard the sound. The potential effect of
operational noise on fish may vary between projects, as operational
noise will varies depending on the turbine size, model, foundation
type and speed of rotation (see § 8.4.5(H) of this Part).
5. In a study by Vella et
al . (2001), the catch per unit effort (CPUE) of cod ( Gadus
morhua ) and shorthorn sculpin ( Myoxocephalus scorpius ) was
greater within 200 m [656 ft] of a wind turbine than between 200 -
400 m [656-1,312 ft] of a turbine, regardless of whether the turbine
was operational or not. The study did find that CPUE was lower in the
vicinity of the turbine while the turbine was operational, but still
higher than in the area 200 - 400 m from the turbine. This
indicates that the turbine may be increasing catch because it is
acting as a fish aggregating device (Rodmell and Johnson 2005).
D. Access to fishing grounds
(formerly § 850.8.3)
1. Offshore renewable energy
facilities may have an adverse impact on commercial and recreational
fishermen’s access to traditional fishing grounds. The degree of
impact varies significantly by facility design, stage of the
development process, location in the offshore environment, and type
of fishing activity, and may be either temporary or long-term.
Fishermen may be displaced from traditional fishing grounds by the
structures themselves, regulatory decisions that limit access around
the structures or through the facility, or other factors.
2. Fishing access around
existing offshore renewable energy facilities in Belgium, Germany,
the Netherlands, and the United Kingdom is subject to restrictions
imposed by those countries’ respective governments. In Belgium,
Germany, and the Netherlands, a 500-meter Safety Zone is established
around the entire wind farm, and fishing is prohibited within this
area. In the United Kingdom, a 500-meter [0.3 mi] Safety Zone is
established around each individual turbine only during the
construction period. During operation, a 50-meter [164 ft] Safety
Zone is established around each individual turbine. These
restrictions are primarily instituted for safety reasons and are
similar to those applied to offshore oil and gas rigs in these same
countries (except for Belgium, where there are no rigs).
3. In the Ocean SAMP area and
other U.S. waters, access around individual turbines or through wind
farms is the jurisdiction of the U.S. Coast Guard, in partnership
with the U.S. Army Corps of Engineers (in state waters) and the U.S.
Bureau of Ocean Energy Management, Regulation and Enforcement (in
federal waters). At the time of this writing, there is no formal
policy in place that would universally limit fishing or navigational
access around and through offshore wind farms in U.S. waters. In
addition, as a point of reference, it should be noted that safety
zones are not universally established at Gulf of Mexico offshore oil
and gas platforms. Those few platform specific safety zones that are
in place are designed to address site- and activity-specific safety
issues and typically allow recreational activities, including
recreational fishing (LeBlanc, pers. comm.).
4. Fishing activity will be
affected differently through different stages of the development
process. Fishing vessels may be required or may choose to avoid the
area during the construction process to avoid conflict with
construction activities and vessels. During the operation phase,
fishermen may be required or may choose to avoid the turbines because
of the potential risk to their vessels or fishing gear from collision
with a turbine, snagging gear, or other safety concerns.
5. The potential impacts of
offshore renewable energy on fisheries activity varies by gear type.
The PEIS (MMS 2007a) indicates that bottom trawling has the greatest
potential for conflict with offshore facilities because of the
potential for snagging bottom gear on cables and debris. It further
indicates that surface longlining may encounter water-sheet use
conflicts with renewable energy facility construction and service
vessels.
6. If certain gear or vessel
types are restricted from the wind farms, either for safety and
navigational reasons, or because those fishermen choose to fish
elsewhere because of the difficulty of navigating amongst the
turbines, this may actually benefit competing gear types fishing for
the same species within the wind farms. The presence of a wind farm
may significantly alter the patterns of fishing within the area
(North Western and North Wales Sea Fisheries Committee n.d.).
7. A loss of fishing grounds
from the placement of a wind farm could cause vessels to have to
travel further to fishing grounds (BMT Cordah Limited 2003),
increasing fuel costs and potentially risks to safety. This could
have a disproportionate impact on smaller fishing vessels, to which
the risks of venturing further to sea will be greater.
8. Some fishermen have
expressed the concern that marine insurance companies might increase
their insurance premiums or prohibit insured fishing vessels from
operating within the vicinity of offshore wind farms (e.g. Ichthys
Marine 2009). However, it should be noted that at the time of this
writing, Sunderland Marine does not currently impose restrictions or
higher premiums on their members, nor have they heard of other
insurance companies issuing such demands (McBurnie, pers. comm.).
Sunderland Marine is the world’s largest insurer of fishing
vessels, and insures The Point Club, a fishing vessel insurance and
safety club that insures many of the fishing vessels operating out of
Point Judith and Newport (Nixon, pers. comm.).
E. Gear/vessel damage
(formerly § 850.8.4)
1. Wind farms may present a
navigational hazard for fishing and other vessels, and there is some
risk of collision with turbines, or with service vessels. Power
cables and bottom fishing gear present mutual possibilities for
damage, and may endanger the safety of fishing vessels. Burying
cables between the turbines, as well as from the wind farm to shore,
will mitigate some of this problem. However, even if cables are
buried, there is a potential for them to become uncovered through sea
bed movement, putting a trawled net and perhaps the fishing vessel in
danger of hang ups (Rodmell and Johnson 2005). Rodmell and Johnson
(2005) note that single vessel trawling within and around the wind
turbines may be possible if cables are sufficiently buried or
protected, but that pair trawling may not be practical, and scallop
dredging may not be compatible with wind farms.
2. Long lining and gill nets
may be feasible in the vicinity of wind turbines, although their
lengths may need to be limited depending on the spacing of the
turbines. Purse seining within the wind farms is likely to be
difficult, although may be possible on a small scale. The use of
lobster and fish pots in the vicinity of the wind turbines should be
mostly undisturbed. Even if fishing activity is permitted within the
wind farms, fishing vessels may prefer to avoid navigating within and
through wind farms (Rodmell and Johnson 2005).
F. Changes to fishing activity
(formerly § 850.8.5)
1. The presence of wind farms
may impede access to fishing grounds for some fishermen; even if
fishing within the turbines is not restricted, some fishermen may
choose to avoid the wind farms for safety or insurance reasons, and
may have to travel further to fish, making it harder or more costly
to retain the same level of catch. The greatest impacts may be to
smaller vessels, which may be more limited in their ability to fish
elsewhere. This may also result in increased competition for space in
other areas (Rodmell and Johnson 2005). Those vessels most likely to
have to avoid the wind farm areas will be those with towed or static
nets (Mackinson et al . 2006), which in the Ocean SAMP waters
includes primarily trawlers and scallop dredges. As many trawlers are
targeting groundfish, already a vulnerable fishery due to declining
catches and increasing regulations, groundfishing vessels may be the
most vulnerable to possible increased costs or reduced earnings from
displacement.
2. Fishermen interviewed in
the UK were concerned that if they were displaced from their usual
fishing grounds, they would have to spend time searching for new
fishing grounds, and that if there were insufficient resources in the
new fishing grounds to support them, they would inevitably suffer
from a reduction in catch. If the fishermen are displaced, they may
also suffer a reduction in catch because of the time required to
search for and develop the specialized local knowledge of their new
fishing grounds they have held at their previous grounds. Fishermen
relocated to another area may suffer reduced earnings because they
are competing with vessels already fishing in the area, or, in the
case that a larger vessel is displaced and seeks out new fishing
grounds, it may in turn displace smaller vessels fishing already
fishing in the new area (Mackinson et al . 2006).
3. Fishermen in the UK were
concerned about impacts on the availability and cost of insurance for
fishing vessels navigating around wind farms, even if fishing within
wind farms is legal (Mackinson et al . 2006).
4. If the wind turbine support
structures serve as artificial reefs or fish aggregating devices,
they could have positive economic benefits for some commercial
fishermen through increased catch rates. A study of artificial reefs
off Portugal found that fishing around the artificial reefs resulted
in substantially higher revenues, and that the value per unit of
effort was also greater, because the fish were more concentrated
(Whitmarsh et al . 2008). These benefits would likely only
accrue to fishermen able to fish in the vicinity of the structures,
although if the reef effects of the turbine support structures serve
to increase fish biomass overall, this could benefit all fishermen in
terms of spillover to adjacent habitats and thereby increased
catches. There is also a danger that the economic benefits from fish
aggregation and the resulting increase in catch efficiency around the
turbines could lead to overexploitation of stocks and decrease
catches elsewhere, negating any positive benefits to be had
(Whitmarsh et al . 2008).
5. Any reef effect would also
have positive benefits for recreational anglers, who would likely be
drawn to the area and may have more opportunities for fishing. This
could have secondary economic effects by increasing recreational
fishing activity and thus expenditures in the Ocean SAMP area.
6. Fishing incomes may be
supplemented or enhanced by offshore aquaculture activities that may
be based around the wind turbines. For more on this potential future
use, see Chapter 9, Other Future Uses.
8.4.9 Cultural and Historic
Resources (formerly § 850.9)
A. The potential effects of
offshore renewable energy on cultural and historic resources may
include physical impacts on existing offshore submerged
archaeological resources such as shipwrecks or pre-contact
settlements on the ocean floor, as well as visual impacts when the
development is proposed within the viewshed of onshore land-based
sites designated as historically significant.
B. Research and documentation
of the effects of offshore renewable energy on cultural and historic
resources have been compiled for projects in Europe, and during
review for the Cape Wind project proposal in the United States (MMS
2010). In anticipation of future offshore renewable energy
development within the U.S., BOEM has identified potential impacts
and enhancements of such development on cultural and visual resources
in the PEIS (MMS 2007a). From Europe, the Collaborative Offshore Wind
Research Into the Environment (COWRIE) released, “Guidance for
Assessment of Cumulative Impacts on the Historic Environment from
Offshore Renewable Energy”, that identifies both synergistic and
cumulative impacts on cultural and historic resources (COWRIE 2007).
C. The term “Area of
Potential Effect” (APE) is defined under the federal National
Historic Preservation Act (36 C.F.R. §§ 800.1 through 800.16) as
the areas within which a project may directly or indirectly alter the
character or use of historic properties. For offshore development
proposals, BOEM defines an APE for direct impacts to include both
offshore submerged areas and onshore land-based sites where physical
disturbance would be required for construction, operation,
maintenance, and decommissioning. The APE for submerged areas
includes footprints of proposed structures to be secured on the ocean
floor and related work area as well as all related bottom-disturbing
activities, including, but not limited to, barges, anchorages,
appurtenances, and cable routes where ocean sediments and sub-bottom
may be disturbed. (MMS 2010). For onshore sites, the APE would
include any soil disturbance required for cables or connections to
onshore electric transmission cable systems, or visual impacts
specifically related to National Historic Landmarks, and other
properties listed or eligible for listing on the National Register of
Historic Places, including Traditional Cultural Properties (MMS
2010).
D. The construction of
offshore renewable energy facilities may result in direct disturbance
of offshore submerged archaeological resources, including shipwreck
sites and potential settlements that may have existed on what is now
the ocean floor. The maps presented in Section 420.4 illustrate a
paleo-geographic landscape reconstruction that suggests much of the
area that is now Block Island and Rhode Island Sound was dry land
over 12,500 years Before Present (yBP), and that human settlement in
these areas was possible. Any disturbance of the bottom could
potentially affect any cultural resources present, including early
settlement sites; the level of impact may depend on the number and
importance of cultural resources in that location, and any seabed
disturbance that has occurred previously in the location (MMS 2007a).
BOEM requires if any unanticipated cultural resources are encountered
during a project, all activities within the area must be stopped and
BOEM be consulted (MMS 2007a).
E. For offshore development
proposals, an Area of Potential Effect (APE) for indirect impacts is
defined to include the area within which the final project as well as
the various phases of construction will be notably visible. Visual
impacts to the setting, character and other aspects of onshore
land-based sites may result from the final project as well as the
various phases of construction in an offshore renewable energy
project. If turbines were visible from shore, this would represent a
change in the viewshed and an alteration of the aesthetics of the
visual setting of areas where the structures were visible. For
onshore land-based sites, the overall perception of visual impacts of
offshore developments is subjective and opinions vary about whether
visual impacts for a given project are positive, negative, or neutral
(MMS 2007a). In advance of the construction phase, a meteorological
tower will likely be installed in the project area to collect data to
assess the wind resources. The visual impact of the tower will depend
on its distance and thus visibility from shore. During the
construction, operation and decommissioning phases, there will be
increased vessel traffic in the project area, which will alter the
visual characteristics of this area in that many of the construction
and maintenance vessels, including a variety of ships and
crane/jack-up barges, may be larger in size than other vessels
traditionally in use within the project area (MMS 2009a). The FAA
will likely require aircraft warning lights on the turbines for air
safety purposes; these will be single red lights that flash at night
on the nacelles of the peripheral turbines. Whether these lights are
visible from land, and thus have an effect on land-based viewing,
will depend on whether the turbines themselves are visible from land
(MMS 2009a).
F. Section 106 of the National
Historic Preservation Act, however, requires that a given project’s
visual effect on historic resources be evaluated for National
Historic Landmarks and other properties listed or eligible for
listing on the National Register of Historic Places, including
Traditional Cultural Properties (MMS 2010). If there is a potential
visual effect, it must be evaluated to determine what effect, if any,
it would have on significant historic resources. A project may be
found to have: no effect; no adverse effect if the visual impact is
limited and insignificant; or an adverse effect. Adverse effects are
defined by the Criteria of Adverse Effect in the Section 106
procedures of the National Historic Preservation Act [36 C.F.R. §
800.5(a)(1)], which state, “An adverse effect is found when an
undertaking may alter, directly or indirectly, any of the
characteristics of a historic property for inclusion in the National
Register in a manner that would diminish the integrity of the
property’s location, design, setting, materials, workmanship,
feeling, or association.” Examples of adverse effects relevant to
the development of offshore renewable energy are listed as including,
but not limited to, the following [36 C.F.R. § 800.5(a)(2)]:
“Alteration of a property…; Change of the character of the
property’s use or of physical features within the property’s
setting that contribute to its historic significance…; Introduction
of visual, atmospheric or audible elements that diminish the
integrity of the property’s significant historic features.”
Adverse effects from visual impacts may be further evaluated in the
case of National Historic Landmarks to determine if they are indirect
impacts or direct impacts, which diminish the core significance of
the National Historic Landmark (Advisory Council on Historic
Preservation, 2010).
G. The magnitude of the visual
impacts will depend on site- and project-specific factors, including:
distance of the proposed wind facility from shore; size of the
facility (i.e., number of wind turbines); size (particularly height)
of the wind turbines; surface treatment (primarily color) of wind
turbines and electrical service platforms (ESPs); number and type of
viewers (e.g., residents, tourists, workers); viewer location
(onshore vs. offshore); viewer attitudes toward alternative energy
and wind power; visual quality and sensitivity of the
landscape/seascape; existing level of development and activities in
the wind facility area and nearby onshore areas (i.e., scenic
integrity and visual absorption capability); presence of sensitive
visual and cultural resources; weather conditions; lighting
conditions; and presence and arrangements of aviation and navigation
lights on the wind turbines (MMS 2007a).
H. Factors that influence the
perception an evaluation of visual impacts include: viewer distance;
view duration; visibility factors; seasonal and lighting conditions;
landscape/seascape setting; number of viewers; and viewer activity,
sensitivity, and cultural factors (MMS 2007a).
8.4.10 Recreation and
Tourism (formerly § 850.10)
A. The potential effects of
offshore renewable energy on recreational and tourism activities are
not well understood given the relatively recent occurrence of
offshore renewable energy. The PEIS indicated that offshore renewable
energy installations might have visual impacts on marine recreational
users and coastal tourists, though this depends on the location and
visibility of the structures, as well as the preferences of the
individual (MMS 2007a). Visual impacts may be caused by the offshore
structures themselves, as well as the sights of support vessels,
construction equipment, and helicopters traveling to and from
offshore facilities, which may impact cruise ship tourists, coastal
tourists, beach users, and recreational boaters. Such impacts could
result in the reduction of tourism or recreational activity within
sight of the project area (Lilley et al . 2009). BOEM cites no
evidence of such impacts in other locations with offshore renewable
facilities and indicates that such impacts, if any, are expected to
be minor (MMS 2007a).
B. Alternatively, the PEIS
also indicates that offshore renewable energy structures may enhance
marine recreational and tourism activities by becoming an attraction
that recreational boaters, charter boat clients, cruise ship
passengers, and other visitors may want to visit (MMS 2007a). A 2007
University of Delaware study found that 65.8% of surveyed
out-of-state tourists were likely to visit a beach in order to see a
wind farm offshore, and 44.5% were likely to pay to take a boat tour
of an offshore wind facility (Lilley et al . 2009). Anecdotal
data provided by a 2006 British Wind Energy Association study
indicates several instances in which tourism increased at UK
destinations adjacent to offshore wind farms, or where surveyed
tourists indicated that the wind farm had no effect on their
likelihood to visit the site (British Wind Energy Association 2006).
Visitor centers have been developed at some of these sites to
facilitate tourists’ experience (British Wind Energy Association
2006).
C. Noise associated with
on-site marine construction, or traffic noise from support vessels
and helicopters traveling to and from the offshore facility, may have
a potential impact on coastal tourists and marine recreational users.
Such impacts could result in the reduction of tourism or recreational
activity within the affected area. In the PEIS, BOEM cites no
evidence of such impacts in other locations with offshore renewable
facilities and indicates that such impacts, if any, are expected to
be minor (MMS 2007a).
D. The construction and
operation of offshore renewable energy facilities may result in
short- or long-term displacement of marine recreational users,
particularly recreational boaters. The construction phase may result
in temporary closures of the offshore project area and/or adjacent
shoreline areas during activities such as driving piles or installing
transmission cables. Though less likely, the operation phase may also
result in the long-term displacement of recreational users from all
or part of the project area. Such temporary or long-term closures
could alter recreational activities and use patterns within the Ocean
SAMP area by lengthening transit times between destinations,
displacing fishing activities conducted by income-generating charter
boat operations, or displacing large-scale sailboat races that rely
on the use of the project area. Such a displacement could also cause
individual users or entire events to relocate, resulting in increased
recreational activity in other in-state or out-of-state locations
(MMS 2007a; Royal Yachting Association and the Cruising Association
2004). In the PEIS, BOEM indicates that such impacts, if any, are
expected to be minor (MMS 2007a). It should also be noted that
enforcing access restrictions around an offshore renewable energy
facility may be very difficult given the offshore location.
E. The construction and
operation of offshore renewable energy facilities may impact
navigation and marine safety for recreational boaters in and around
the project area. Alternatively, offshore facilities may provide
enhancements to navigation and marine safety by providing mariners
access to offshore weather data. Such impacts, enhancements, and
mitigation measures are discussed at length in § 8.4.11 of this Part
which deals with potential affects to marine transportation,
navigation, and infrastructure.
F. Some of the recreational
uses discussed in Chapter 6, Recreation and Tourism rely on the
presence and visibility of marine and avian species including fish,
whales, sharks, and birds. Offshore renewable energy facilities may
have some impacts on these species and/or the habitats on which they
rely. Alternatively, offshore renewable energy support structures may
add to habitat complexity and increase biodiversity within the
immediate area, attracting more fish, birds, whales and sharks,
thereby improving recreational activities that rely on these species.
See §§ 8.4.3, 8.4.4, 8.4.5 and 8.4.7 of this Part for more
information on the potential affects offshore renewable energy
development may pose to these resources.
G. If offshore renewable
energy development results in a reduction in marine recreation and
tourism in the Ocean SAMP area, Rhode Island-based businesses that
serve these industries may lose some business. Alternatively, marine
trades and coastal tourism businesses may benefit from offshore
renewable energy in response to the potential growth of marine and
coastal tourism activities such as wind farm boat trips (OSPAR 2004)
(see above). In addition the construction and operation of an
offshore facility may require additional shore-based infrastructure
or services that may boost the marine trades sector.
8.4.11 Marine
Transportation, Navigation and Infrastructure (formerly § 850.11)
A. Offshore renewable energy
may have some effects on marine transportation, navigation activities
and other infrastructure in the Ocean SAMP area. The degree to which
offshore renewable energy structures may affect marine
transportation, navigation and infrastructure varies in large part on
the specific siting of a project. Careful consideration when
planning the location of an offshore renewable energy facility, as
well as the use of appropriate mitigation strategies, can minimize
any potential negative impacts (MMS 2007a).
B. In addition to the
potential effects identified in European research, the PEIS and the
Cape Wind FEIS, the U.S. Coast Guard has issued a Navigation and
Vessel Inspection Circular (U.S. Coast Guard NAVIC 02-07) to provide
guidance on the information and factors the Coast Guard will
consider, which include navigational safety and security, when
reviewing a permit application for an offshore renewable energy
installation in the navigable waters of the United States (U.S. Coast
Guard 2007).
C. Offshore renewable energy
facilities may affect navigational safety in a project area by
increasing the risk of collision, limiting visibility, or limiting a
vessel’s ability to maneuver (MMS 2007a; U.S. Coast Guard 2007;
BWEA 2007; U.K. Maritime and Coast Guard Agency 2008). However,
collision risk was found to be low, especially when facilities are
sited appropriately (e.g. MMS 2007a). Risks that have been identified
include vessels colliding with offshore renewable structures
themselves; with other vessels; or with ice that has formed on or
around the structures during winter months. Moreover, visibility may
be impaired surrounding an offshore renewable energy facility, as
structures may block or hinder a mariner’s view of other vessels,
nearby land masses, or other navigational features (U.S. Coast Guard
2007; United Kingdom Maritime and Coast Guard Agency 2008).
Obstructed visibility could potentially put a vessel at risk of
collision or running aground. However, mitigation measures have been
identified that can lower this potential risk to acceptable levels.
For instance, mariners have been advised to follow required standard
operating procedures, where applicable, as outlined in the
International Regulations for Preventing Collisions at Sea (COLREGS)
for limited visibility conditions. Adherence with these standard
regulations can mitigate hazards to navigation caused by impaired
visibility within an offshore renewable energy facility (U.S. Coast
Guard 2009; U.K. Maritime and Coast Guard Agency 2008). Offshore
renewable energy structures may also limit the ability of some larger
vessels to maneuver to avoid collision, as these vessels usually
require greater stopping distances and have wider turning radii (U.S.
Coast Guard 2007; U.S. Coast Guard 2009). The PEIS notes that such
impacts can be mitigated to acceptable levels by siting offshore
renewable energy facilities so that they do not interfere with
designated fairways or shipping lanes, and using appropriate signage
and/or lighting to warn passing vessels (MMS 2007a; U.S. Coast Guard
2009). In addition, the U.S. Coast Guard considers all of these
navigational safety issues when evaluating a permit application for
an offshore renewable energy structure (U.S. Coast Guard 2007).
D. Whereas offshore renewable
energy facilities may potentially displace marine transportation,
military, or navigation uses, appropriate siting away from shipping
lanes, military usage areas, or other intensively-used areas can
minimize or eliminate any potential displacement of these uses (MMS
2007a). Vessels that cannot safely operate or navigate within an
offshore renewable energy facility may be excluded from areas that
were previously used, and therefore would need to alter travel routes
in the vicinity of such projects (United Kingdom Maritime and
Coastguard Agency 2008; U.S. Coast Guard 2007). Route alterations may
potentially extend vessel travel times. The PEIS (MMS 2007a) notes
that such impacts can be mitigated to acceptable levels by siting
offshore renewable energy facilities away from designated fairways or
shipping lanes. In addition, BOEM (MMS 2007a) expects that the
military impacts of offshore wind farms will be negligible provided
that development is coordinated with the U.S. Department of Defense
and all appropriate military agencies.
E. Offshore renewable energy
structures may affect the physical characteristics of a waterway,
which include localized currents and sediment deposition and erosion
(United Kingdom Maritime and Coastguard Agency 2008) though can be
minimized to acceptable levels through proper siting and mitigation
methods (U.S. Coast Guard 2007; MMS 2007a). Currents that are altered
in direction and/or speed within or around an offshore renewable
energy facility, may affect how vessels navigate through an area. In
addition, structures that attach to the seafloor or extend through
the water column may affect the surrounding water depth by altering
sediment movement or deposition (MMS 2007a; U.S. Coast Guard 2007;
United Kingdom Maritime and Coastguard Agency 2008). Consequently, if
shoaling occurs, vessel navigation may be impacted within or around
an offshore renewable energy facility. These effects may be most
pronounced in predominantly shallow areas, or areas composed of
highly mobile substrate (i.e. sands) with strong waves or currents.
Mitigation measures may include installing scour-protection devices
and monitoring sediment transport processes (United Kingdom Maritime
and Coastguard Agency 2008; U.S. Coast Guard 2007; MMS 2007a). For
more information on scour and the potential effects to coastal
processes and physical oceanography see § 8.4.2 of this Part.
F. Due to the large size of
some offshore renewable structures, offshore renewable energy
installations may interfere with the use of radar by ships or
shore-based facilities within the area. However, interference may be
negligible to minor when properly mitigated (MMS 2007a; U.S. Coast
Guard 2007; Technology Service Corporation 2008; Howard and Brown
2004; U.S. Department of Defense 2006). Studies have shown that ship
and land-based radar systems may have some difficulty in detecting
marine targets within an offshore renewable energy facility as the
result of the distortion or degradation of radar signals by the
installed structures (U.S. Coast Guard 2009; Technology Service
Corporation 2008; MMS 2007a; U.S. Department of Defense 2006, BWEA
2007). Research conducted to assess the potential radar impacts of
the proposed Cape Wind project in Nantucket Sound found that the
facility would only pose adverse impacts in accurately detecting
targets within and immediately behind the wind farm, as the installed
structures may produce false targets or mask real targets (U.S. Coast
Guard 2009; Technology Service Corporation 2008; United Kingdom
Maritime and Coastguard Agency 2008). In other words, vessels
navigating near but outside a wind farm may not be able to clearly
identify, by radar, another vessel operating within the wind farm due
to radar clutter. However, radar impacts observed within the wind
farm can be mitigated to acceptable levels through greater attention
by radar operators in distinguishing between real and false targets
(U.S. Coast Guard 2009). No adverse impacts were found to occur
between vessels operating completely outside, but within the vicinity
of, the wind farm (U.S. Coast Guard 2009; Technology Service
Corporation 2008). Because the severity of impacts to radar varies
widely depending on site-specific characterizations, the U.S. Coast
Guard considers impacts on navigation radar when reviewing a permit
application (U.S. Coast Guard 2007).
G. Weather radar located near
offshore renewable energy installations may also be adversely
impacted by offshore renewable energy structures; impacts may include
misidentification of thunderstorm features, false radar estimates of
precipitation accumulation, and incorrect storm cell identification
and tracking (MMS 2007a).
H. The installation of
offshore renewable energy facilities may cause either minimal impacts
or possible enhancements to navigation and communication tools and
systems, including global positioning systems, magnetic compasses,
cellular phone communications, very-high frequency (VHF)
communications, ultra-high frequency (UHF) and other microwave
systems, and automatic identification systems (AIS) (MMS 2007a,
United Kingdom Maritime and Coastguard Agency 2008). The PEIS (MMS
2007a) indicates that any impacts are likely to be negligible to
minor, and cites a number of studies in which no negative impacts
were found. For example, Brown and Howard (2004) found no impact of
wind farms on GPS accuracy and also noted that magnetic compasses,
AIS, and VHF communications (ship-to-ship and ship-to-shore) were not
affected within the wind farm installation. The U.S. Coast Guard
requires permit applicants to conduct research on the potential
impacts of an offshore renewable energy installation on navigation
and communication systems prior to construction (U.S. Coast Guard
2007).
I. Search and rescue
operations by agencies such as the U.S. Coast Guard, may be
positively and/or negatively affected by offshore renewable energy
installations (U.S. Coast Guard 2007; LeBlanc 2009). For example,
installations may prolong the response time of search and rescue
missions in cases where longer routes around the facility are
required. Alternatively, offshore renewable energy structures may
provide refuge to distressed mariners stranded or disabled within the
vicinity of the facility (U.S. Coast Guard 2007). When evaluating an
offshore renewable energy permit, the U.S. Coast Guard will examine
if an offshore renewable energy facility will prolong an agency’s
response time during a rescue mission (LeBlanc 2009). Previous
research conducted to analyze the effects of offshore wind farms on
search and rescue operations, involving helicopters, showed that
radio communications and VHF homing systems worked satisfactorily, as
did thermal imaging of vessels, turbines, and personnel within the
wind facility (Brown 2005).
J. Operational offshore
renewable energy facilities may provide enhancements to navigation
and marine safety by providing mariners with access to in-situ
offshore weather, wave and current data. This information may
increase navigational safety by informing mariners of current
offshore conditions, or providing a recent history of offshore
conditions to aid in search and rescue operations within the area.
K. During the construction of
an offshore renewable energy facility, vessel traffic may temporarily
increase in a project area (MMS 2007a). Transits and operations of
vessels involved in the transport of equipment and materials,
facility construction, or the laying of submarine cables may
temporarily increase (MMS 2007a). As a result, port facilities may
also experience increased activity (MMS 2007a). Increased vessel
activity may continue, albeit to a lesser extent, through the
operation of the offshore renewable energy facility, as maintenance
vessels will be required to service the installed structures. The
presence of these vessels may increase the demand for port services,
and enhance the economic activity associated with port facilities and
marine industries.
L. Siting of offshore
renewable energy facilities near pre-existing submarine cables may
impact the security and accessibility of these cables. Such impacts
can be mitigated to acceptable levels by considering pre-existing
cables when siting offshore renewable energy facilities. Cable ships
require a minimum distance from an offshore structure in order to
safely access a submarine cable for repair or replacement
(International Cable Protection Committee 2007). Offshore renewable
energy installations whose location does not allow for safe access to
existing submarine cables by the appropriate vessels may negatively
impact the operation, performance, and longevity of this
infrastructure (International Cable Protection Committee 2007). In
addition, laying new submarine cables associated with an offshore
renewable energy facility may require crossing existing cables in the
area.
8.4.12 Cumulative Impacts
(formerly § 850.12)
A. Table 8.20 in §
8.4.12(A)(1) of this Part summarizes of all the potential effects of
offshore renewable energy development on existing resources and uses
identified in this section. The range and severity of effects will
vary depending on the project. Project specific effects will be
thoroughly examined as part of a project’s NEPA review. In order to
assess what the net effect might be from any of these effects related
to offshore renewable energy, numerous factors will need to be taken
into account, including the duration, frequency, and/or intensity of
the effect. Furthermore, most effects are still not fully understood
and will require further monitoring (see § 8.5 of this Part for
monitoring requirements for offshore renewable energy in the Ocean
SAMP area).
1. Table 8.20. Summary of
potential effects of offshore renewable energy development during
each stage of development.
Area
Pre-construction Siting
Construction
Operation
Decommissioning
Alteration
of waves and currents
N/A
N/A
Changes in current velocity
and direction; changes in wave heights; Changes in larval
distribution; Scour (local and global)
N/A
Water
Column Density Stratification
N/A
N/A
Reduced spatial extent of
stratification; Shorter seasonal duration of stratification
N/A
Alteration
of Benthic Habitat
N/A
Redistribution of
sediments; Smothering of benthic organisms; smothering of eggs and
larvae; damage to benthic habitat from cable sweep; Loss of
habitat; disturbance to shellfish beds or hard bottom habitats
from cable laying
Introduction of hard
substrate; Loss of seabed area
Loss
of habitat; Redistribution of sediments; Smothering of benthic
organisms; smothering of eggs and larvae;
Water
quality
Accidental
spillage of contaminants or debris
Accidental spillage of
contaminants or debris
Accidental release of
contaminants
Accidental
spillage of contaminants or debris
Turbidity
N/A
Affect primary production;
secondary effects on prey species; potential smothering of eggs
and larvae
N/A
Affect
primary production; secondary effects on prey species; potential
smothering of eggs and larvae
Noise
effects - marine mammals
Avoidance;
sound masking; stress
Masking of sounds;
displacement; temporary/permanent hearing threshold shifts;
stress; injury; mortality
Avoidance; sound masking;
stress
Avoidance;
sound masking; stress
Noise
effects - fish
Avoidance;
sound masking; stress.
Masking of sounds;
displacement; temporary/permanent hearing threshold shifts;
stress; injury; mortality; decreased catch rates.
Avoidance; sound masking;
stress.
Avoidance;
sound masking; stress.
Noise
effects - sea turtles
Avoidance
Avoidance
Probably none
Avoidance
EMF
N/A
N/A
Avoidance or attraction by
sensitive species, resulting in changes to feeding or migratory
behavior.
N/A
Reef
effects
N/A
N/A
Increased colonization for
invertebrates; increased fish habitat; shelter for juvenile
species; increased predators; possibility of invasive species;
increased fish catch; attraction for sea turtles.
Loss
of reef effects.
Vessel
traffic
Increased
risk of collision with marine mammals; Increased noise causing
avoidance by fish and marine mammals.
Increased risk of collision
with marine mammals; Increased noise causing avoidance by fish and
marine mammals; Increased risk of collision with sea turtles.
Increased risk of collision
with marine mammals; Increased noise causing avoidance by fish and
marine mammals.
Increased
risk of collision with marine mammals; Increased noise causing
avoidance by fish and marine mammals.
Effects
to birds
N/A
Displacement; disturbance.
Displacement; disturbance;
avoidance; collision with turbines.
Displacement;
disturbance.
Visual
effects
Increased
vessel traffic.
Increased vessel traffic,
including heavy construction equipment.
Presence of wind turbines.
Increased
vessel traffic, including heavy construction equipment.
B. In addition to the effects
caused by any one renewable energy project within the Ocean SAMP
area, the cumulative impact of past, present, and future uses on the
Ocean SAMP area must be considered. The Ocean SAMP area is not
pristine - activities in the offshore waters have been taking place
for hundreds of years - but neither is it heavily industrialized.
The ecosystem and its resources, as well as those who use the Ocean
SAMP area, are currently being directly or indirectly affected by
activities taking place inside of and beyond the Ocean SAMP area.
When considering the effects of a wind energy project on the marine
environment, the cumulative effects of existing activities such as
fishing, marine transportation, and recreation will need to be
considered alongside the proposed project, as should the effects of
multiple renewable energy or other development projects on this area.
Particularly important will be the cumulative effects of global
climate change along with other current and future activities. The
total cumulative effects cannot be fully understood and cannot be
predicted with certainty, but nonetheless the potential for
cumulative effects should be taken into account. A cumulative impact
analysis of a proposed project would be required under 40 C.F.R. §
1508.7 of NEPA regulations.
C. While not all offshore
renewable energy projects will have the same effects on the natural
resources or existing uses of the Ocean SAMP area, identifying all
potential effects aids in determining the most appropriate siting for
any future projects. Through the Ocean SAMP process existing uses and
resources have been identified and described, adding to the current
understanding of the area. Moreover, the policies and standards
outlined in the Ocean SAMP document provide protection and
consideration to important areas, resources and uses of the area. In
the end, the findings and policies of the Ocean SAMP will help to
manage and address cumulative impacts of potential offshore renewable
energy development, or any future development within the waters of
the Ocean SAMP boundary.
8.5 General Policies and
Regulatory Standards (formerly § 860)
8.5.1 General Policies
(formerly § 860.1)
A. The Council supports
offshore development in the Ocean SAMP area that is consistent with
the Ocean SAMP goals which are to:
1. Foster a properly
functioning ecosystem that can be both ecologically effective and
economically beneficial;
2. Promote and enhance
existing uses; and
3. Encourage marine-based
economic development that considers the aspirations of local
communities and is consistent and complementary to the state’s
overall economic development needs and goals.
B. The Council supports the
policy of increasing renewable energy production in Rhode Island. The
Council also recognizes:
1. Offshore wind energy
currently represents the greatest potential for utility-scale
renewable energy generation in Rhode Island;
2. Offshore renewable energy
development is a means of mitigating the potential effects of global
climate change;
3. Offshore renewable energy
development will diversify Rhode Island’s energy portfolio;
4. Offshore renewable energy
development will aid in meeting the goals set forth in Rhode Island’s
Renewable Energy Standard; and
5. Marine renewable energy has
the potential to assist in the redevelopment of urban waterfronts and
ports.
C. The Council’s support of
offshore renewable energy development shall not be construed to
endorse or justify any particular developer or particular offshore
renewable energy proposal.
D. The policies and standards
contained herein supersede §§ 00-1.3.1(C) and 00-1.3.1(H) of this
Chapter (Rhode Island Coastal Resources Management Program (RICRMP))
only for the jurisdictional area of the Ocean SAMP. Dredging and
dredge disposal activities remain governed by § 00-1.3.1(I) of this
Chapter.
E. The Council may require the
applicant to fund a program to mitigate the potential impacts of a
proposed offshore development to natural resources and existing human
uses. The mitigation program may be used to support restoration
projects, additional monitoring, preservation, or research activities
on the impacted resource or site.
F. To the greatest extent
possible, offshore development structures and projects shall be made
available to researchers for the investigation into the effects of
large-scale installations on the marine environment, and to the
extent practicable, educators for the purposes of educating the
public.
G. The Council shall work in
coordination with the U.S. Department of the Interior Bureau of Ocean
Energy Management, Regulation and Enforcement to develop a seamless
process for review and design approval of offshore wind energy
facilities that is consistent across state and federal waters.
H. The Council shall work
together with the U.S. Coast Guard, the U.S. Navy, the U.S. Army
Corps of Engineers, NOAA, fishermen’s organizations, marine pilots,
recreational boating organizations, and other marine safety
organizations to promote safe navigation, fishing, and recreational
boating activity around and through offshore structures and
developments, and along cable routes, during the construction,
operation and decommissioning phases of such projects. The Council
will promote and support the education of all mariners regarding safe
navigation around offshore structures and developments, and along
cable routes.
I. Discussions with the U.S.
Coast Guard, the U.S. Department of Interior Bureau of Ocean Energy
Management, Regulation, and Enforcement, and the U.S. Army Corps of
Engineers have indicated that no vessel access restrictions are
planned for the waters around and through offshore structures and
developments, or along cable routes, except for those necessary for
navigational safety. Commercial and recreational fishing and boating
access around and through offshore structures and developments and
along cable routes is a critical means of mitigating the potential
adverse impacts of offshore structures on commercial and recreational
fisheries and recreational boating. The Council endorses this
approach and shall work to ensure that the waters surrounding
offshore structures, developments, and cable routes remain open to
commercial and recreational fishing, marine transportation, and
recreational boating, except for navigational safety restrictions.
The Council requests that federal agencies notify the Council as soon
as is practicable of any federal action that may affect vessel access
around and through offshore structures and developments and along
cable routes. The Council will continue to monitor changes to
navigational activities around and through offshore developments and
along cable routes. Any changes affecting existing navigational
activities may be subject to CZMA federal consistency review if the
federal agency determines its activity will have reasonably
foreseeable effects on the uses or resources of Rhode Island’s
coastal zone.
J. To coordinate the review
process for offshore wind energy developments, the Council shall
adopt consistent information requirements similar to the requirements
of the U.S. Department of the Interior’s Bureau of Ocean Energy
Management, Regulation and Enforcement for offshore wind energy. All
documentation required at the time of application shall be similar
with the requirements followed by the U.S. Department of the Interior
Bureau of Ocean Energy Management, Regulation and Enforcement when
issuing renewable energy leases on the Outer Continental Shelf. For
further details on these regulations see 30 C.F.R. §§ 285 et seq.
The Council shall continue to monitor the federal review process and
information requirements for any changes and will make adjustments to
the Ocean SAMP policies accordingly.
K. To the maximum extent
practicable, the Council shall coordinate with the appropriate
federal and state agencies to establish project specific requirements
that shall be followed by the applicant during the pre-construction,
construction, operation and decommissioning phases of an offshore
development. To the maximum extent practicable, the Council shall
work in coordination with a Joint Agency Working Group when
establishing pre-construction survey and data requirements,
monitoring requirements, protocols and mitigation measures for a
proposed offshore development. State members of the Joint Agency
Working Group shall coordinate with the Habitat Advisory Board and
the Fishermen’s Advisory Board and shall seek input from these
Boards before establishing project specific requirements that shall
be followed by the applicant for an offshore development. And, to the
maximum extent practical, and consistent with the federal agency and
tribal members’ authorities, federal members of the Joint Agency
Working Group, are strongly encouraged to coordinate with the Habitat
Advisory Board and the Fishermen’s Advisory Board. The Joint Agency
Working Group shall comprise those state and federal agencies that
have a regulatory responsibility related to the proposed project, as
well as the Narragansett Indian Tribal Historic Preservation Office.
The agency composition of this working group may differ depending on
the proposed project, but will generally include the lead federal
agency with primary jurisdiction over the proposed project and the
CRMC. The pre-construction survey requirements outlined in §
8.5.2(F) of this Part may be reduced for small- scale offshore
developments as specified by the Joint Agency Working Group.
L. The following are industry
goals that projects should strive for. These are not required
standards at this time but are targets project proponents should try
to meet where possible to alleviate potential adverse impacts:
1. A goal for the wind farm
applicant and operator is to have operational noise from wind
turbines average less than or equal to 100 dB re 1 ?Pa2 in any 1/3
octave band at a range of 100 meters at full power production;
2. The applicant and
manufacturer should endeavor to minimize the radiated airborne noise
from the wind turbines; and
3. A monitoring system
including acoustical, optical and other sensors should be established
near these facilities to quantify the effects.
8.5.2 Regulatory Standards
(formerly § 860.2)
A. The federal offshore
renewable energy leasing process, and subsequent regulation of
renewable energy projects located in federal waters, will remain
under the jurisdiction of BOEM in consultation and coordination with
relevant federal agencies and affected state, local, and tribal
officials, as per BOEM’s statutory authority at 43 U.S.C. §
1337(p) and the regulations found at 30 C.F.R. § 285.
B. Overall regulatory
standards (formerly 860.2.1)
1. All offshore developments
regardless of size, including energy projects, which are proposed for
or located within state waters of the Ocean SAMP area, are subject to
the policies and standards outlined in §§ 11.9 and 11.10 of this
Subchapter (except, as noted above, § 11.9 of this Subchapter
policies shall not be used for CRMC concurrence or objection for CZMA
Federal Consistency reviews). For the purposes of the Ocean SAMP,
offshore developments are defined as:
a. Large-scale projects, such
as:
(1) offshore wind facilities
(5 or more turbines within 2 km of each other, or 18 MW power
generation);
(2) wave generation devices (2
or more devices, or 18 MW power generation);
(3) instream tidal or ocean
current devices (2 or more devices, or 18 MW power generation); and
(4) offshore LNG platforms (1
or more);
(5) Artificial reefs (1/2 acre
footprint and at least 4 feet high), except for projects of a public
nature whose primary purpose is habitat enhancement; and
(6) outer continental shelf
(OCS) exploration, development, and production plans
b. Small-scale projects,
defined as any projects that are smaller than the above thresholds;
c. Underwater cables;
d. Mining and extraction of
minerals, including sand and gravel;
e. Aquaculture projects of any
size, as defined in § 00-1.3.1(K) of this Chapter and subject to the
regulations of § 00-1.3.1(K) of this Chapter;
f. Dredging, as defined in §
00-1.3.1(I) of this Chapter and subject to the regulations of §
00-1.3.1(I) of this Chapter; or
g. Other development as
defined in the Part 1 of this Chapter (RICRMP) which is located in
tidal waters from the mouth of Narragansett Bay seaward, between 500
feet offshore and the 3-nautical mile, state water boundary.
2. In assessing the natural
resources and existing human uses present in state waters of the
Ocean SAMP area, the Council finds that the most suitable area for
offshore renewable energy development in the state waters of the
Ocean SAMP area is the renewable energy zone depicted in Figure 8.47
in § 8.5.2(B)(2)(a) of this Part. The Council designates this area
as Type 4E waters. In Subchapter 00 Part 1 of this Chapter (Rhode
Island Coastal Resources Management Program - Red Book) these
waters were previously designated as Type 4 (or multipurpose) but are
hereby modified to show that this is the preferred site for large
scale renewable energy projects in state waters. The Council may
approve offshore renewable energy development elsewhere in the Ocean
SAMP area, within state waters, where it is determined to have no
significant adverse impact on the natural resources or human uses of
the Ocean SAMP area. Large-scale offshore developments shall avoid
areas designated as Areas of Particular Concern consistent with
§8.5.2(C) of this Part. No large-scale offshore renewable energy
development shall be allowed in Areas Designated for Preservation
consistent with § 8.5.2(D) of this Part.
a. Figure 8.47: Renewable
Energy Zone
3. Offshore Developments shall
not have a significant adverse impact on the natural resources or
existing human uses of the Rhode Island coastal zone, as described in
the Ocean SAMP. In making the evaluation of the effect on human uses,
the Council will determine, for example, if there is an overall net
benefit to the Rhode Island marine economic sector from the
development of the project or if there is an overall net loss. Where
the Council determines that impacts on the natural resources or human
uses of the Rhode Island coastal zone through the pre-construction,
construction, operation, or decommissioning phases of a project
constitute significant adverse effects not previously evaluated, the
Council shall, through its permitting and enforcement authorities in
state waters and through any subsequent CZMA federal consistency
reviews, require that the applicant modify the proposal to avoid
and/or mitigate the impacts or the Council shall deny the proposal.
4. Any assent holder of an
approved offshore development shall:
a. Design the project and
conduct all activities in a manner that ensures safety and shall not
cause undue harm or damage to natural resources, including their
physical, chemical, and biological components to the extent
practicable; and take measures to prevent unauthorized discharge of
pollutants including marine trash and debris into the offshore
environment.
b. Submit requests,
applications, plans, notices, modifications, and supplemental
information to the Council as required;
c. Follow up, in writing, any
oral request or notification made by the Council, within 3 business
days;
d. Comply with the terms,
conditions, and provisions of all reports and notices submitted to
the Council, and of all plans, revisions, and other Council
approvals, as provided in§ 8.5.2(F) of this Part;
e. Make all applicable
payments on time;
f. Conduct all activities
authorized by the permit in a manner consistent with the provisions
of this document, the Rhode Island Coastal Resources Management
Program, and all relevant federal and state statutes, regulations and
policies;
g. Compile, retain, and make
available to the Council within the time specified by the Council any
information related to the site assessment, design, and operations of
a project; and
h. Respond to requests from
the Council in a timeframe specified by the Council.
5. Any large-scale offshore
development, as defined in § 8.3(G) of this Part, shall require a
meeting between the Fisherman’s Advisory Board (FAB), the
applicant, and the Council staff to discuss potential fishery-related
impacts, such as, but not limited to, project location, construction
schedules, alternative locations, project minimization and
identification of high fishing activity or habitat edges. For any
state permit process for a Large-Scale Offshore Development this
meeting shall occur prior to submission of the state permit
application. The Council cannot require a pre-application meeting for
federal permit applications, but the Council strongly encourages
applicants for any large-scale offshore development, as defined in §
8.3(G) of this Part and § 11.3(F) of this Subchapter, in federal
waters to meet with the HAB and the Council staff prior to the
submission of a federal application, lease, license, or
authorization. However, for federal permit applicants, a meeting with
the HAB shall be necessary data and information required for federal
consistency reviews for purposes of starting the CZMA 6-month review
period for federal license or permit activities under 15 C.F.R. Part
930, Subpart D, and OCS Plans under 15 C.F.R. Part 930, Subpart E,
pursuant to 15 C.F.R. § 930.58(a)(2). Any necessary data and
information shall be provided before the 6-month CZMA review period
begins for a proposed project.
6. The Council shall prohibit
any other uses or activities that would result in significant
long-term negative impacts Rhode Island’s commercial or
recreational fisheries. Long-term impacts are defined as those that
affect more than one or two seasons.
7. The Council shall require
that the potential adverse impacts of offshore developments and other
uses on commercial or recreational fisheries be evaluated,
considered, and mitigated as described in § 8.5.2(B)(8) of this
Part.
8. For the purposes of §§
5.3.1 and 5.3.2 of this Subchapter, mitigation is defined as a
process to make whole those fisheries user groups that are adversely
affected by proposals to be undertaken or undertaken projects in the
Ocean SAMP area. Mitigation measures shall be consistent with the
purposes of duly adopted fisheries management plans, programs,
strategies and regulations of the agencies and regulatory bodies with
jurisdiction over fisheries in the SAMP area, including but not
limited to those set forth in § 5.3.1(B) of this Subchapter.
Mitigation shall not be designed or implemented in a manner that
substantially diminishes the effectiveness of duly adopted fisheries
management programs. Mitigation measures may include, but are not
limited to, compensation, effort reduction, habitat preservation,
restoration and construction, marketing, and infrastructure
improvements. Where there are potential impacts associated with
proposed projects, the need for mitigation shall be presumed.
Negotiation of mitigation agreements shall be a necessary condition
of any approval or permit of a project by the Council. Mitigation
shall be negotiated between the Council staff, the FAB, the project
developer, and approved by the Council. The reasonable costs
associated with the negotiation, which may include data collection
and analysis, technical and financial analysis, and legal costs,
shall be borne by the applicant. The applicant shall establish and
maintain either an escrow account to cover said costs of this
negotiation or such other mechanism as set forth in the permit or
approval condition pertaining to mitigation. This policy shall apply
to all large-scale offshore developments, underwater cables, and
other projects as determined by the Council.
9. The Council recognizes that
moraine edges, as illustrated in Figure 8.49 in § 8.5.2(C)(6) of
this Part, are important to commercial and recreational fishermen. In
addition to these mapped areas, the FAB may identify other edge areas
that are important to fisheries within a proposed project location.
The Council shall consider the potential adverse impacts of future
activities or projects on these areas to Rhode Island’s commercial
and recreational fisheries. Where it is determined that there is a
significant adverse impact, the Council will modify or deny
activities that would impact these areas. In addition, the Council
will require assent holders for offshore developments to employ
micro-siting techniques in order to minimize the potential impacts of
such projects on these edge areas.
10. The finfish, shellfish,
and crustacean species that are targeted by commercial and
recreational fishermen rely on appropriate habitat at all stages of
their life cycles. While all fish habitat is important, spawning and
nursery areas are especially important in providing shelter for these
species during the most vulnerable stages of their life cycles. The
Council shall protect sensitive habitat areas where they have been
identified through the site assessment plan or construction and
operation plan review processes for offshore developments as
described in § 8.5.2(F) of this Part.
11. Any large-scale offshore
development, as defined in § 8.3(G) of this Part, shall require a
meeting between the HAB, the applicant, and the Council staff to
discuss potential marine resource and habitat-related issues such as,
but not limited to, impacts to marine resource and habitats during
construction and operation, project location, construction schedules,
alternative locations, project minimization, measures to mitigate the
potential impacts of proposed projects on habitats and marine
resources, and the identification of important marine resource and
habitat areas. For any state permit process for a large-scale
offshore development, this meeting shall occur prior to submission of
the state permit application. The Council cannot require a
pre-application meeting for federal permit applications, but the
Council strongly encourages applicants for any large-scale offshore
development, as defined in § 8.3(G) of this Part, in federal waters
to meet with the HAB and the Council staff prior to the submission of
a federal application, lease, license, or authorization. However, for
federal permit applicants, a meeting with the HAB shall be necessary
data and information required for federal consistency reviews for
purposes of starting the CZMA 6-month review period for federal
license or permit activities under 15 C.F.R. Part 930, Subpart D, and
OCS Plans under 15 C.F.R. Part 930, Subpart E, pursuant to 15 C.F.R.
§ 930.58(a)(2). Any necessary data and information shall be provided
before the 6-month CZMA review period begins for a proposed project.
12. The potential impacts of a
proposed project on cultural and historic resources will be evaluated
in accordance with the National Historic Preservation Act and
Antiquities Act, and the Rhode Island Historical Preservation Act and
Antiquities Act as applicable. Depending on the project and the lead
federal agency, the projects that may impact marine historical or
archaeological resources identified through the joint agency review
process shall require a marine archaeology assessment that documents
actual or potential impacts the completed project will have on
submerged cultural and historic resources.
13. Guidelines for Marine
Archaeology Assessment in the Ocean SAMP Area can be obtained through
the RIHPHC in their document, “Performance Standards and Guidelines
for Archaeological Projects: Standards for Archaeological Survey”
(RIHPHC 2007), or the lead federal agency responsible for reviewing
the proposed development.
14. The potential non-physical
impacts of a proposed project on cultural and historic resources
shall be evaluated in accordance with 36 C.F.R. § 800.5, Assessment
of Adverse Effects, (v) Introduction of visual, atmospheric, or
audible elements that diminish the integrity of the property’s
significant historic features. Depending on the project and the lead
federal agency, the Ocean SAMP Interagency Working Group may require
that a project undergo a visual impact assessment that evaluates the
visual impact a completed project will have on onshore cultural and
historic resources.
15. A visual impact assessment
may require the development of detailed visual simulations
illustrating the completed project’s visual relationship to onshore
properties that are designated National Historic Landmarks, listed on
the National Register of Historic Places, or determined to be
eligible for listing on the National Register of Historic Places.
Assessment of impacts to specific views from selected properties of
interest may be required by relevant state and federal agencies to
properly evaluate the impacts and determination of adverse effect of
the project on onshore cultural or historical resources.
16. A visual impact assessment
may require description and images illustrating the potential impacts
of the proposed project.
17. Guidelines for Landscape
and Visual Impact Assessment in the Ocean SAMP Area can be obtained
through the lead federal agency responsible for reviewing the
proposed development.
C. Areas of particular concern
(formerly § 860.2.2)
1. Areas of particular concern
(APCs) have been designated in state waters through the Ocean SAMP
process with the goal of protecting areas that have high conservation
value, cultural and historic value, or human use value from
large-scale offshore development. These areas may be limited in their
use by a particular regulatory agency (e.g., shipping lanes), or have
inherent risk associated with them (e.g., unexploded ordnance
locations), or have inherent natural value or value assigned by human
interest (e.g., glacial moraines, historic shipwreck sites). Areas of
particular concern have been designated by reviewing habitat data,
cultural and historic features data, and human use data that has been
developed and analyzed through the Ocean SAMP process. Currently
designated areas of particular concern are based on current knowledge
and available datasets; additional areas of particular concern may be
identified by the Council in the future as new datasets are made
available. Areas of particular concern may be elevated to areas
designated for preservation in the future if future studies show that
areas of particular concern cannot risk even low levels of
large-scale offshore development within these areas. Areas of
particular concern include:
a. Areas with unique or
fragile physical features, or important natural habitats;
b. Areas of high natural
productivity;
c. Areas with features of
historical significance or cultural value;
d. Areas of substantial
recreational value;
e. Areas important for
navigation, transportation, military and other human uses; and
f. Areas of high fishing
activity.
2. The Council has designated
the areas listed below in § 8.5.2(C)(3) of this Part in state waters
as areas of particular concern. All large-scale, small-scale, or
other offshore development, or any portion of a proposed project,
shall be presumptively excluded from APCs. This exclusion is
rebuttable if the applicant can demonstrate by clear and convincing
evidence that there are no practicable alternatives that are less
damaging in areas outside of the APC, or that the proposed project
will not result in a significant alteration to the values and
resources of the APC. When evaluating a project proposal, the Council
shall not consider cost as a factor when determining whether
practicable alternatives exist. Applicants which successfully
demonstrate that the presumptive exclusion does not apply to a
proposed project because there are no practicable alternatives that
are less damaging in areas outside of the APC must also demonstrate
that all feasible efforts have been made to avoid damage to APC
resources and values and that there will be no significant alteration
of the APC resources or values. Applicants successfully demonstrating
that the presumptive exclusion does not apply because the proposed
project will not result in a significant alteration to the values and
resources of the APC must also demonstrate that all feasible efforts
have been made to avoid damage to the APC resources and values. The
Council may require a successful applicant to provide a mitigation
plan that protects the ecosystem. The Council will permit underwater
cables, only in certain categories of Areas of Particular Concern, as
determined by the Council in coordination with the Joint Agency
Working Group. The maps listed below in § 8.5.2(C) of this Part
depicting areas of particular concern may be superseded by more
detailed, site-specific maps created with finer resolution data.
3. Areas of particular concern
that have been identified in the Ocean SAMP area in state waters are
described as follows:
a. Historic shipwrecks,
archeological or historical sites and their buffers as described in §
4.3 of this Subchapter, are areas of particular concern. For the
latest list of these sites and their locations please refer to the
Rhode Island State Historic Preservation and Heritage Commission.
b. Offshore dive sites within
the Ocean SAMP area, as shown in Figure 8.48 in § 8.5.2(C)(5) of
this Part are designated areas of particular concern. The Council
recognizes that offshore dive sites, most of which are shipwrecks,
are valuable recreational and cultural ocean assets and are important
to sustaining Rhode Island’s recreation and tourism economy.
c. Glacial moraines are
important habitat areas for a diversity of fish and other marine
plants and animals because of their relative structural permanence
and structural complexity. Glacial moraines create a unique bottom
topography that allows for habitat diversity and complexity, which
allows for species diversity in these areas and creates environments
that exhibit some of the highest biodiversity within the entire Ocean
SAMP area. The Council also recognizes that because glacial moraines
contain valuable habitats for fish and other marine life, they are
also important to commercial and recreational fishermen. Accordingly,
the Council shall designate glacial moraines as identified in Figures
8.49 and 8.50 in §§ 8.5.2(C)(6) and (7) of this Part as areas of
particular concern.
d. Navigation, Military, and
Infrastructure areas including: designated shipping lanes,
precautionary areas, recommended vessel routes, ferry routes, dredge
disposal sites, military testing areas, unexploded ordnance, pilot
boarding areas, anchorages, and a coastal buffer of 1 km as depicted
in Figure 8.51 in § 8.5.2(C)(8) of this Part are designated as Areas
of Particular Concern. The Council recognizes the importance of these
areas to marine transportation, navigation and other activities in
the Ocean SAMP area.
e. Areas of high fishing
activity as identified during the pre-application process by the
Fishermen’s Advisory Board, as defined in § 11.3(E) of this
Subchapter, may be designated by the Council as areas of particular
concern.
f. Several heavily-used
recreational boating and sailboat racing areas, as shown in Figure
8.52 in § 8.5.2(C)(9) of this Part, are designated as areas of
particular concern. The Council recognizes that organized
recreational boating and sailboat racing activities are concentrated
in these particular areas, which are therefore important to
sustaining Rhode Island’s recreation and tourism economy.
g. Naval Fleet Submarine
Transit Lane, as described in Chapter 7, Marine Transportation,
Navigation, and Infrastructure section 720.7, are designated as areas
of particular concern.
h. Other areas of particular
concern may be identified during the pre-application review by state
and federal agencies as areas of importance.
4. Developers proposing
projects for within the renewable energy zone as described in §
8.5.2(C) of this Part shall adhere to the requirements outlined in §
8.5.2(C)(2) of this Part regarding areas of particular concern in
state waters, including any areas of particular concern that overlap
the renewable energy zone (see Figure 8.53 in § 8.5.2(C)(10)) of
this Part.
5. Figure 8.48: Offshore dive
sites designated as Areas of Particular Concern in state waters.
6. Figure 8.49: Glacial
moraines designated as Areas of Particular Concern in state waters.
7. Figure 8.50: Detailed view:
Glacial moraines surrounding Block Island designated as Areas of
Particular Concern in state waters
8. Figure 8.51: Navigation,
military, and infrastructure areas designated as Areas of Particular
Concern in state waters
9. Figure 8.52: Recreational
boating areas designated as Areas of Particular Concern in state
waters
10. Figure 8.53: Areas of
particular concern overlapping the renewable energy zone in state
waters
D. Prohibitions and areas
designated for preservation (formerly § 860.2.3)
1. Areas designated for
preservation are designated in the Ocean SAMP area in state waters
for the purpose of preserving them for their ecological value. Areas
designated for preservation were identified by reviewing habitat and
other ecological data and findings that have resulted from the Ocean
SAMP process. Areas designated for preservation are afforded
additional protection than areas of particular concern (see §
8.5.2(C) of this Part because of scientific evidence indicating that
large-scale offshore development in these areas may result in
significant habitat loss. The areas listed in § 8.5.2(D) of this
Part are designated as areas designated for preservation. The Council
shall prohibit any large-scale offshore development, mining and
extraction of minerals, or other development that has been found to
be in conflict with the intent and purpose of an area designated for
preservation. Underwater cables are exempt from this prohibition.
Areas designated for preservation include:
a. Ocean SAMP sea duck
foraging habitat in water depths less than or equal to 20 meters
[65.6 feet] (as shown in Figure 8.54 in § 8.5.2(D) of this Part) is
designated as an area designated for preservation due to their
ecological value and the significant role these foraging habitats
play to avian species, and existing evidence suggesting the potential
for permanent habitat loss as a result of offshore wind energy
development. The current research regarding sea duck foraging areas
indicates that this habitat is depth limited and generally contained
within the 20 meter depth contour. It is likely there are discreet
areas within this region that are prime feeding areas, however at
present there is no long-term data set that would allow this
determination. Thus, the entire area within the 20 meter contour is
being protected as an area designated for preservation until further
research allows the Council and other agencies to make a more refined
determination.
(1) Figure 8.54: Sea duck
foraging habitat designated as areas designated for preservation in
state waters
2. The mining and extraction
of minerals, including sand and gravel, from tidal waters and salt
ponds is prohibited. This prohibition does not apply to dredging for
navigation purposes, channel maintenance, habitat restoration, or
beach replenishment for public purposes.
3. The Council shall prohibit
any offshore development in areas identified as critical habitat
under the Endangered Species Act.
4. Dredged material disposal,
as defined in § 00-1.3.1(I) of this Chapter and subject to the
regulations of § 00-1.3.1(I) of this Chapter, is further limited in
the Ocean SAMP area by the prohibition of dredged material disposal
in the following areas of particular concern as defined in §
8.5.2(C) of this Part: historic shipwrecks, archaeological, or
historic sites; offshore dive sites; navigation, military, and
infrastructure areas; and moraines. Beneficial reuse may be allowed
in areas designated for preservation, whereas all other dredged
material disposal is prohibited in those areas. All disposal of
dredged material will be conducted in accordance with the U.S. EPA
and U.S. Army Corps of Engineers’ manual, Evaluation of Dredged
Material Proposed for Ocean Disposal.
E. Other Areas (formerly §
860.2.4)
1. Large-scale projects or
other development which is found to be a hazard to commercial
navigation shall avoid areas of high intensity commercial marine
traffic in state waters. Avoidance shall be the primary goal of these
areas. Areas of high intensity commercial marine traffic are defined
as having 50 or more vessel counts within a 1 km by 1 km grid, as in
Figure 8.55 in § 8.5.2(E) of this Part.
a. Figure 8.55: Areas of high
intensity commercial ship traffic in state waters
F. Application requirements
(formerly § 860.2.5)
1. For the purposes of this
document, the phrase “‘necessary data and information’” shall
refer to the necessary data and information required for federal
consistency reviews for purposes of starting the Coastal Zone
Management Act (CZMA) 6-month review period for federal license or
permit activities under 15 C.F.R. Part 930, Subpart D, and OCS Plans
under 15 C.F.R. Part 930, Subpart E, pursuant to 15 C.F.R. §
930.58(a)(2). Any necessary data and information shall be provided
before the 6-month CZMA review period begins for a proposed project.
It should be noted that other federal and state agencies may require
other types of data or information as part of their review processes.
2. For the purposes of this
document, the following terms shall be defined as:
a. A site assessment plan
(SAP) is defined as a pre-application plan that describes the
activities and studies the applicant plans to perform for the
characterization of the project site.
b. A construction and
operations plan (COP) is defined as a plan that describes the
applicant’s construction, operations, and conceptual
decommissioning plans for a proposed facility, including the
applicant’s project easement area.
c. A certified verification
agent (CVA) is defined as an independent third-party agent that shall
use good engineering judgment and practices in conducting an
independent assessment of the design, fabrication and installation of
the facility. The CVA shall have licensed and qualified Professional
Engineers on staff.
3. Prior to construction, the
following sections shall be considered necessary data and information
and shall be required by the Council:
a. Site assessment plan - A
SAP is a pre-application plan that describes the activities and
studies (e.g., installation of meteorological towers, meteorological
buoys) the applicant plans to perform for the characterization of the
project site. Within the renewable energy zone, if an applicant
applies within 2 years of CRMC’s adoption of the Ocean Special Area
Management Plan they may elect to combine the SAP and construction
and operation plan (COP) phase, but only within the renewable energy
zone and only for 2 years after the adoption date. If an applicant
elects to combine these two phases all requirements shall still be
met. The SAP shall describe how the applicant shall conduct the
resource assessment (e.g., meteorological and oceanographic data
collection) or technology testing activities. The applicant shall
receive the approval of the SAP by the Council. For projects within
Type 4E waters (depicted in Figure 8.47 in § 1.5.2(B) of this Part),
pre-construction data requirements may incorporate data generated by
the Ocean SAMP provided the data was collected within 2 years of the
date of application, or where the Ocean SAMP data is determined to be
current enough to meet the requirements of the Council in
coordination with the Joint Agency Working Group. The applicant shall
reference information and data discussed in the Ocean SAMP (including
appendices and technical reports) in their SAP.
(1) The applicant’s SAP
shall include data from:
(AA) Physical characterization
surveys (e.g., geological and geophysical surveys or hazards
surveys); and
(BB) Baseline environmental
surveys (e.g., biological or archaeological surveys).
(2) The SAP shall demonstrate
that the applicant has planned and is prepared to conduct the
proposed site assessment activities in a manner that conforms to the
applicant’s responsibilities listed above in § 8.5.2(B)(5) and:
(AA) Conforms to all
applicable laws, regulations;
(BB) Is safe;
(CC) Does not unreasonably
interfere with other existing uses of the state waters,
(DD) Does not cause undue harm
or damage to natural resources; life (including human and
wildlife);the marine, coastal, or human environment; or sites,
structures, or direct harm to objects of historical or archaeological
significance;
(EE) Uses best available and
safest technology;
(FF) Uses best management
practices; and
(GG) Uses properly trained
personnel.
(3) The applicant shall also
demonstrate that the site assessment activities shall collect the
necessary data and information required for the applicant’s COP, as
described below in § 8.5.2(F)(3)(b) of this Part.
(4) The applicant’s SAP
shall include the information described in Table 8.21 in § 8.5.2(F)
of this Part, as applicable.
(AA) Table 8.21: Contents of a
site assessment plan (SAP)
Project
information:
Including:
(1)
Contact information
The
name, address, e-mail address, and phone number of an authorized
representative.
(2)
The site assessment or technology testing concept.
A
discussion of the objectives; description of the proposed
activities, including the technology to be used; and proposed
schedule from start to completion.
(4)
Stipulations and compliance.
A
description of the measures the applicant took, or shall take, to
satisfy the conditions of any permit stipulations related to the
applicant’s proposed activities.
(5)
A location.
The
surface location and water depth for all proposed and existing
structures, facilities, and appurtenances located both offshore
and onshore.
(6)
General structural and project design, fabrication, and
installation.
Information
for each type of facility associated with the applicant’s
project.
(7)
Deployment activities.
A
description of the safety, prevention, and environmental
protection features or measures that the applicant will use.
(8)
The applicant’s proposed measures for avoiding, minimizing,
reducing, eliminating, and monitoring environmental impacts.
A
description of the measures the applicant shall take to avoid or
minimize adverse effects and any potential incidental take, before
the applicant conducts activities on the project site, and how the
applicant shall mitigate environmental impacts from proposed
activities, including a description of the measures to be used.
(9)
Reference information.
Any
document or published source that the applicant cites as part of
the plan. The applicant shall reference information and data
discussed in the Ocean SAMP (including appendices and technical
reports), other plans referenced in the Ocean SAMP, other plans
previously submitted by the applicant or that are otherwise
readily available to the Council.
(10)
Decommissioning and site clearance procedures.
A
discussion of methodologies.
(11)
Air quality information.
Information
required for the Clean Air Act (42 U.S.C. § 7409) and
implementing regulations
(12)
A listing of all Federal, State, and local authorizations or
approvals required to conduct site assessment activities on the
project site.
A
statement indicating whether such authorization or approval has
been applied for or obtained.
(13)
A list of agencies or persons with whom the applicant has
communicated, or will communicate, regarding potential impacts
associated with the proposed activities.
Contact
information and issues discussed.
(14)
Financial assurance information.
Statements
attesting that the activities and facilities proposed in the
applicant’s SAP are or shall be covered by an appropriate
performance bond or other Council approved security.
(15)
Other information.
Additional
information as requested by the Council in coordination with the
Joint Agency Working Group.
(5) The applicant’s SAP
shall provide the results of geophysical and geological surveys,
hazards surveys, archaeological surveys (as required by the Council
in coordination with the Joint Agency Working Group), and biological
surveys outlined in Table 8.22 in § 8.5.2(F) of this Part (with the
supporting data) in the applicant’s SAP:
(AA) Table 8.22: Necessary
data and information to be provided in the Site Assessment Plan.
Information.
Report
contents.
Including.
(1)
Geotechnical
Reports
from the geotechnical survey with supporting data.
A
description of all relevant seabed and engineering information to
allow for the design of the foundation of that facility. The
applicant shall provide information to depths below which the
underlying conditions shall not influence the integrity or
performance of the structure. This could include a series of
sampling locations (borings and in situ tests) as well as
laboratory testing of soil samples.
(2)
Shallow hazards
The
results from the shallow hazards survey with supporting data, if
required.
A
description of information sufficient to determine the presence of
the following features and their likely effects on the proposed
facility, including:
(i)
Shallow faults;
(ii)
Gas seeps or shallow gas;
(iii)
Slump blocks or slump sediments;
(iv)
Hydrates; and
(v)
Ice scour of seabed sediments.
(3)
Archaeological resources
The
results from the archaeological survey with supporting data, if
required.
(i)
A description of the results and data from the archaeological
survey;
(ii)
A description of the historic and prehistoric archaeological
resources, as required by the National Historic Preservation Act
and Antiquities Act (16 U.S.C. § 470 et. seq.), as amended, the
Rhode Island Historical Preservation Act and Antiquities Act and
§§ 00-1.2.3 and 00-1.3.5 of this Chapter, as applicable;
(iii)
For more information on the archeological surveys and assessments
required see § 4.3 of this Subchapter.
(4)
Geological survey
The
results from the geological survey with supporting data.
A
report that describes the results of a geological survey that
includes descriptions of:
(i)
Seismic activity at the proposed site;
(ii)
Fault zones;
(iii)
The possibility and effects of seabed subsidence; and
(iv)
The extent and geometry of faulting attenuation effects of
geologic conditions near the site.
(5)
Biological survey
The
results from the biological survey with supporting data.
A
description of the results of a biological survey, including
descriptions of the presence of live bottoms; hard bottoms;
topographic features; and surveys of other marine resources such
as fish populations (including migratory populations) not targeted
by commercial or recreational fishing, marine mammals, sea
turtles, and sea birds.
(6)
Fish and Fisheries Survey
The
results from the fish and fisheries survey with supporting data.
A
report that describes the results of:
(i)
A biological assessment of commercially and recreationally
targeted species. This assessment shall assess the relative
abundance, distribution, and different life stages of these
species at all four seasons of the year. This assessment shall
comprise a series of surveys, employing survey equipment and
methods that are appropriate for sampling finfish, shellfish, and
crustacean species at the project’s proposed location. This
assessment may include evaluation of survey data collected through
an existing survey program, if data are available for the proposed
site.
(ii)
An assessment of commercial and recreational fisheries effort,
landings, and landings value. Assessment shall focus on the
proposed project area and alternatives across all four seasons of
the year must. Assessment may use existing fisheries monitoring
data but shall be supplemented by interviews with commercial and
recreational fishermen.
(iii)
For more information on these assessments see § 8.5.2(J) of this
Part.
(6) The applicant shall submit
a SAP that describes those resources, conditions, and activities
listed in Table 8.23 in § 8.5.2(F) of this Part that could be
affected by the applicant’s proposed activities, or that could
affect the activities proposed in the applicant’s SAP, including
but not limited to:
(AA) Table 8.23: Resource data
and uses that shall be described in the Site Assessment Plan.
Type
of information
Including:
(1)
Hazard information
Meteorology,
oceanography, sediment transport, geology, and shallow geological
or manmade hazards.
(2)
Water quality
Turbidity
and total suspended solids from construction.
(3)
Biological resources
Benthic
communities, marine mammals, sea turtles, coastal and marine
birds, fish and shellfish (not targeted by commercial or
recreational fishing), plankton, seagrasses, and plant life.
(4)
Threatened or endangered species
As
required by the Endangered Species Act (ESA) of 1973 (16. U.S.C.
§ 1531 et. seq.).
(5)
Sensitive biological resources or habitats
Essential
fish habitat, refuges, preserves, Areas of Particular Concern,
Areas Designated for Preservation, sanctuaries, rookeries, hard
bottom habitat, and calving grounds; barrier islands, beaches,
dunes, and wetlands.
(6)
Archaeological and visual resources
As
required by the National Historic Preservation Act and
Antiquities Act (16 U.S.C. § 470 et. seq.), as amended, the
Rhode Island Historical Preservation Act and Antiquities Act and
§§ 00-1.2.3 and 00-1.3.5 of this Chapter, as applicable.
(7)
Social and economic resources
Employment,
existing offshore and coastal infrastructure (including major
sources of supplies, services, energy, and water), land use,
subsistence resources and harvest practices, recreation, minority
and lower income groups, and view shed.
(8)
Fisheries resources and uses
Commercially
and recreationally targeted species, recreational and commercial
fishing (including fishing seasons, location, and type),
commercial and recreational fishing activities, effort, landings,
and landings value.
(8)
Coastal and marine uses
Military
activities, vessel traffic, and energy and non-energy mineral
exploration or development.
(7) The Council shall review
the applicant’s SAP in conjunction with the Joint Agency Working
Group to determine if it contains the information necessary to
conduct technical and environmental reviews and shall notify the
applicant if the SAP lacks any necessary information.
(8) As appropriate, the
Council shall coordinate and consult with relevant Federal and State
agencies, and affected Indian tribes.
(9) Any large-scale offshore
development, as defined above in § 8.3(G) of this Part, shall
require a pre-application meeting between the FAB, the applicant, and
the Council staff to discuss potential fishery-related impacts, such
as, but not limited to, project location, construction schedules,
alternative locations, and project minimization. During the
pre-application meeting for a large-scale offshore development, the
FAB can also identify areas of high fishing activity or habitat edges
to be considered during the review process.
(10) During the review
process, the Council may request additional information if it is
determined that the information provided is not sufficient to
complete the review and approval process.
(11) Once the SAP is approved
by the Council the applicant may begin conducting the activities
approved in the SAP.
(12) Reporting requirements of
the applicant under an approved SAP:
(AA) Following the approval of
a SAP, the applicant shall notify the Council in writing within 30
days of completing installation activities of any temporary measuring
devices approved by the Council.
(BB) The applicant shall
prepare and submit to the Council a report semi-annually. The first
report shall be due 6 months after work on the SAP begins; subsequent
reports shall be submitted every 6 month thereafter until the SAP
period is complete. The report shall summarize the applicant’s site
assessment activities and the results of those activities.
(CC) The Council reserves the
right to require additional environmental and technical studies, if
it is found there is a critical area lacking or missing information.
(13) The applicant shall seek
the Council’s approval before conducting any activities not
described in the approved SAP, describing in detail the type of
activities the applicant proposes to conduct and the rationale for
these activities. The Council shall determine whether the activities
proposed are authorized by the applicant’s existing SAP or require
a revision to the applicant’s SAP. The Council may request
additional information from the applicant, if necessary, to make this
determination.
(14) The Council shall
periodically review the activities conducted under an approved SAP.
The frequency and extent of the review shall be based on the
significance of any changes in available information and on onshore
or offshore conditions affecting, or affected by, the activities
conducted under the applicant’s SAP. If the review indicates that
the SAP should be revised to meet the requirements of this part, the
Council shall require the applicant to submit the needed revisions.
(15) The applicant may keep
approved facilities (such as meteorological towers) installed during
the SAP period in place during the time that the Council reviews the
applicant’s COP for approval. Note: Structures in state waters
shall require separate authorizations outside the SAP process.
(16) The applicant is not
required to initiate the decommissioning process for facilities that
are authorized to remain in place under the applicant’s approved
COP. If, following the technical and environmental review of the
applicant’s submitted COP, the Council determines that such
facilities may not remain in place the applicant shall initiate the
decommissioning process.
(17) The Executive Director on
behalf of the Council will be responsible for reviewing and approving
study designs conducted as part of the necessary data and information
contained in the SAP. The Executive Director shall seek the advice of
the FAB and HAB in setting out the study designs to be completed in
the SAP. The Executive Director shall also brief the Ocean SAMP
Subcommittee on each study design as it is being considered. Any
applicant that initiated, conducted and/or completed site assessment
studies or surveying activities prior to the adoption of the policies
set forth in the SAMP, shall demonstrate that the studies were done
in accordance with federal protocols for such studies or in the
alternative, to the Council’s satisfaction that the completed
studies were conducted with approval from the Executive Director and
in accordance with §§ 11.10.5(A), 11.10.5(C)(2), 11.10.5(C)(3) and
11.10.5(C)(4) of this Subchapter.
b. Construction and operations
plan (COP) - The COP describes the applicant’s construction,
operations, and conceptual decommissioning plans for the proposed
facility, including the applicant’s project easement area.
(1) The applicant’s COP
shall describe all planned facilities that the applicant shall
construct and use for the applicant’s project, including onshore
and support facilities and all anticipated project easements.
(2) The applicant’s COP
shall describe all proposed activities including the applicant’s
proposed construction activities, commercial operations, and
conceptual decommissioning plans for all planned facilities,
including onshore and support facilities.
(3) The applicant shall
receive the Council’s approval of the COP before the applicant can
begin any of the approved activities on the applicant’s project
site, lease or easement.
(4) The COP shall demonstrate
that the applicant has planned and is prepared to conduct the
proposed activities in a manner that:
(AA) Conforms to all
applicable laws, implementing regulations.
(BB) Is safe;
(CC) Does not unreasonably
interfere with other uses of state waters;
(DD) Does not cause undue harm
or damage to natural resources; life (including human and wildlife);
the marine, coastal, or human environment; or direct impact to sites,
structures, or objects of historical or archaeological significance;
(EE) Uses best available and
safest technology;
(FF) Uses best management
practices; and
(GG) Uses properly trained
personnel.
(5) The applicant’s COP
shall include the following project-specific information, as
applicable:
(AA) Table 8.24: Contents of
the construction and operations plan (COP).
Project
information:
Including:
(1)
Contact information
The
name, address, e-mail address, and phone number of an authorized
representative.
(2)
Designation of operator, if applicable
(3)
The construction and operation concept
A
discussion of the objectives, description of the proposed
activities, tentative schedule from start to completion, and
plans for phased development.
(5)
A location
The
surface location and water depth for all proposed and existing
structures, facilities, and appurtenances located both offshore
and onshore, including all anchor/mooring data.
(6)
General structural and project design, fabrication, and
installation
Information
for each type of structure associated with the project and,
unless the Council provides otherwise, how the applicant shall
use a CVA to review and verify each stage of the project.
(7)
All cables and pipelines, including cables on project easements
Location,
design and installation methods, testing, maintenance, repair,
safety devices, exterior corrosion protection, inspections, and
decommissioning. The applicant shall prior to construction also
include location of all cable crossings and appropriate clearance
from the owners of existing cables.
(8)
A description of the deployment activities
Safety,
prevention, and environmental protection features or measures
that the applicant shall use.
(9)
A list of solid and liquid wastes generated.
Disposal
methods and locations.
(10)
A list of chemical products used (if stored volume exceeds
Environmental Protection Agency (EPA) Reportable Quantities.
A
list of chemical products used; the volume stored on location;
their treatment, discharge, or disposal methods used; and the
name and location of the onshore waste receiving, treatment,
and/or disposal facility. A description of how these products
would be brought onsite, the number of transfers that may take
place, and the quantity that shall be transferred each time.
(12)
Decommissioning and site clearance procedures
A
discussion of general concepts and methodologies.
(13)
A list of all Federal, State, and local authorizations,
approvals, or permits that are required to conduct the proposed
activities, including commercial operations
A
list of all Federal, State, and local authorizations, approvals,
or permits that are required to conduct the proposed activities,
including commercial operations. In addition, a statement
indicating whether the applicant has applied for or obtained such
authorizations, approvals, or permits.
(14)
The applicant’s proposed measures for avoiding, minimizing,
reducing, eliminating, and monitoring environmental impacts
A
description of the measures the applicant shall take to avoid or
minimize adverse effects and any potential incidental take before
conducting activities on the project site, and how the applicant
shall minimize environmental impacts from proposed activities,
including a description of the measures.
(15)
Information the applicant incorporates by reference
A
list of the documents referenced and the actual document if
requested.
(16)
A list of agencies and persons with whom the applicant has
communicated, or with whom the applicant shall communicate,
regarding potential impacts associated with the proposed
activities
Contact
information, issues discussed and the actual document if
requested
(17)
Reference
Contact
information.
(18)
Financial assurance
Statements
attesting that the activities and facilities proposed in the
applicant’s COP are or shall be covered by an appropriate bond
or security, as required by § 8.5.2(H) of this Part.
(19)
CVA nominations
CVA
nominations for reports required.
(20)
Construction schedule
A
reasonable schedule of construction activity showing significant
milestones leading to the commencement of commercial operations.
(21)
Air quality information
Information
required for the Clean Air Act (42 U.S.C. § 7409) and
implementing regulations.
(22)
Other information
Additional
information as required by the Council.
(6) The applicant’s COP
shall include the following information and surveys for the proposed
site(s) of the applicant’s facility or facilities:
(AA) Table 8.25: Necessary
data and information to be provided in the construction and
operations plan (COP).
Information:
Report
contents:
Including:
(1)
Shallow hazards
The
results of the shallow hazards survey with supporting data, if
required.
Information
sufficient to determine the presence of the following features and
their likely effects on the proposed facility, including:
(i)
Shallow faults;
(ii)
Gas seeps or shallow gas;
(iii)
Slump blocks or slump sediments;
(iv)
Hydrates; or
(v)
Ice scour of seabed sediments.
(2)
Geological survey relevant to the siting and design of the
facility
The
results of the geological survey with supporting data.
Assessment
of:
(i)
Seismic activity at the proposed site;
(ii)
Fault zones;
(iii)
The possibility and effects of seabed subsidence; and
(iv)
The extent and geometry of faulting attenuation effects of
geologic conditions near the site.
(3)
Biological Survey
The
results of the biological survey with supporting data.
A
description of the results of biological surveys used to determine
the presence of live bottoms, hard bottoms, and topographic
features, and surveys of other marine resources such as fish
populations (including migratory populations) not targeted by
commercial or recreational fishing, marine mammals, sea turtles,
and sea birds.
(4)
Fish and Fisheries Survey
The
results from the fish and fisheries survey with supporting data.
A
report that describes the results of:
(i)
A biological assessment of commercially and recreationally
targeted species. This assessment shall assess the relative
abundance, distribution, and different life stages of these
species at all four seasons of the year. This assessment shall
comprise a series of surveys, employing survey equipment and
methods that are appropriate for sampling finfish, shellfish, and
crustacean species at the project’s proposed location. This
assessment may include evaluation of survey data collected through
an existing survey program, if data are available for the proposed
site.
(ii)
An assessment of commercial and recreational fisheries effort,
landings, and landings value. Assessment shall focus on the
proposed project area and alternatives across all four seasons of
the year must. Assessment may use existing fisheries monitoring
data but shall be supplemented by interviews with commercial and
recreational fishermen.
(iii)
For more information on these assessments see § 8.5.2(J) of this
Part.
(5)
Geotechnical survey
The
results of any sediment testing program with supporting data, the
various field and laboratory tests employed, and the applicability
of these methods as they pertain to the quality of the samples,
the type of sediment, and the anticipated design application. The
applicant shall explain how the engineering properties of each
sediment stratum affect the design of the facility. In the
explanation, the applicant shall describe the uncertainties
inherent in the overall testing program, and the reliability and
applicability of each method.
(i)
The results of a testing program used to investigate the
stratigraphic and engineering properties of the sediment that may
affect the foundations or anchoring systems of the proposed
facility.
(ii)
The results of adequate in
situ testing,
boring, and sampling at each foundation location, to examine all
important sediment and rock strata to determine its strength
classification, deformation properties, and dynamic
characteristics. A minimum of one boring shall be taken per
turbine planned, and the boring shall be taken within 50 feet of
the final location of the turbine.
(iii)
The results of a minimum of one deep boring (with soil sampling
and testing) at each edge of the project area and within the
project area as needed to determine the vertical and lateral
variation in seabed conditions and to provide the relevant
geotechnical data required for design.
(6)
Archaeological and visual resources, if required
The
results of the archaeological resource survey with supporting
data.
A
description of the historic and prehistoric archaeological
resources, as required by the National Historic Preservation Act
and Antiquities Act (16 U.S.C. § 470 et. seq.), as amended, the
Rhode Island Historical Preservation Act and Antiquities Act and
§§ 00-1.2.3 and 00-1.3.5 of this Chapter, as applicable.
(7)
Overall site investigation.
An
overall site investigation report for the proposed facility that
integrates the findings of the shallow hazards surveys and
geologic surveys, and, if required, the subsurface surveys with
supporting data.
An
analysis of the potential for:
(i)
Scouring of the seabed;
(ii)
Hydraulic instability;
(iii)
The occurrence of sand waves;
(iv)
Instability of slopes at the facility location;
(v)
Liquefaction, or possible reduction of sediment strength due to
increased pore pressures;
(vi)
Cyclic loading;
(vii)
Lateral loading;
(viii)
Dynamic loading;
(ix)
Settlements and displacements;
(x)
Plastic deformation and formation collapse mechanisms; and
(xi)
Sediment reactions on the facility foundations or anchoring
systems.
(7) The applicant’s COP
shall describe those resources, conditions, and activities listed in
Table 8.26 that could be affected by the applicant’s proposed
activities, or that could affect the activities proposed in the
applicant’s COP, including:
(AA) Table 8.26: Resources,
conditions and activities that shall be described in the construction
and operations plan (COP).
Type
of Information:
Including:
(1)
Hazard information and sea level rise
Meteorology,
oceanography, sediment transport, geology, and shallow geological
or manmade hazards. Provide an analysis of historic and project
(medium and high) rates of sea level rise and shall at minimum
assess the risks for each alternative on public safety and
environmental impacts resulting from the project (see § 3.3.2 of
this Subchapter for more information).
(2)
Water quality and circulation
Turbidity and total
suspended solids from construction.
Modeling
of circulation and stratification to ensure that water flow
patterns and velocities are not altered in ways that would lead
to major ecosystem change.
(3)
Biological resources
Benthic
communities, marine mammals, sea turtles, coastal and marine
birds, fish and shellfish not targeted by commercial or
recreational fishing, plankton, seagrasses, and plant life.
(4)
Threatened or endangered species
As
defined by the ESA (16 U.S.C. § 1531 et. seq.)
(5)
Sensitive biological resources or habitats
Essential
fish habitat, refuges, preserves, Areas of Particular Concern,
sanctuaries, rookeries, hard bottom habitat, barrier islands,
beaches, dunes, and wetlands.
(6)
Fisheries resources and uses
Commercially
and recreationally targeted species, recreational and commercial
fishing (including fishing seasons, location, and type),
commercial and recreational fishing activities, effort, landings,
and landings value.
(6)
Archaeological resources
As
required by the NHPA (16 U.S.C. § 470 et. seq.), as amended.
(7)
Social and economic resources
As
determined by the Council in coordination with the Joint Agency
Working Group.
(8)
Coastal and marine uses
Military
activities, vessel traffic, and energy and non-energy mineral
exploration or development.
(8) The applicant shall submit
an oil spill response plan per the Oil Pollution Act of 1990, 33
U.S.C. § 2701 et seq .
(9) The applicant shall submit
the applicant’s Safety Management System, the contents of which are
described below:
(AA) How the applicant plans
to ensure the safety of personnel or anyone on or near the facility;
(BB) Remote monitoring,
control and shut down capabilities;
(CC) Emergency response
procedures;
(DD) Fire suppression
equipment (if needed);
(EE) How and when the safety
management system shall be implemented and tested; and
(FF) How the applicant shall
ensure personnel who operate the facility are properly trained.
(10) The Council shall review
the applicant’s COP and the information provided to determine if it
contains all the required information necessary to conduct the
project’s technical and environmental reviews. The Council shall
notify the applicant if the applicant’s COP lacks any necessary
information.
(11) As appropriate, the
Council shall coordinate and consult with relevant Federal, State,
and local agencies, the FAB and affected Indian tribes.
(12) During the review
process, the Council may request additional information if it is
determined that the information provided is not sufficient to
complete the review and approval process. If the applicant fails to
provide the requested information, the Council may disapprove the
applicant’s COP.
(13) Upon completion of the
technical and environmental reviews and other reviews required, the
Council may approve, disapprove, or approve with modifications the
applicant’s COP.
(14) In the applicant’s COP,
the applicant may request development of the project area in phases.
In support of the applicant’s request, the applicant shall provide
details as to what portions of the site shall be initially developed
for commercial operations and what portions of the site shall be
reserved for subsequent phased development.
(15) If the application and
COP is approved, prior to construction the applicant shall submit to
the Council for approval the documents listed below:
(AA) Facility design report-
The applicant’s facility design report provides specific details of
the design of any facilities, including cables and pipelines, that
are outlined in the applicant’s approved SAP or COP. The
applicant’s facility design report shall demonstrate that the
applicant’s design conforms to the applicant’s responsibilities
listed in § 8.5.2(B) of this Part. The applicant shall include the
following items in the applicant’s facility design report:
(i) Table 8.27: Contents of
the facility design report.
Required
documents:
Required
contents:
Other
requirements:
(1)
Cover letter
(i) Proposed facility
designations;
(ii)The
type of facility
The
applicant shall submit 4 paper copies and 1 electronic copy.
(2)
Location
(i) Latitude and longitude
coordinates, Universal Mercator grid-system coordinates, state
plane coordinates in the Lambert or Transverse Mercator
Projection System;
(ii) These coordinates
shall be based on the NAD (North American Datum) 83 datum plane
coordinate system; and
(iii)
The location of any proposed project easement.
The
applicant’s plat shall be drawn to a scale of 1 inch equals 100
feet and include the coordinates of the project site, and
boundary lines. The applicant shall submit 4 paper copy and 1
electronic copy.
(3)
Front, side, and plan view drawings
(i) Facility dimensions
and orientation;
(ii) Elevations relative
to Mean Lower Low Water; and
(iii)
Pile sizes and penetration.
The
applicant’s drawing sizes shall not exceed 11” x 17”. The
applicant shall submit 4 paper copies and 1 electronic copy.
(4)
Complete set of structural drawings
The approved for
construction fabrication drawings should be submitted, including,
e.g.,
(i) Cathodic protection
systems;
(ii) Jacket design;
(iii) Pile foundations;
(iv) Mooring and tethering
systems;
(v) Foundations and
anchoring systems; and
(vi)
Associated cable and pipeline designs.
The
applicant’s drawing sizes shall not exceed 11” x 17”. The
applicant shall submit 4 paper copies and 1 electronic copy.
(5)
Summary of environmental data used for design
A summary of the
environmental data used in the design or analysis of the
facility. Examples of relevant data include information on:
(i) Extreme weather;
(ii) Seafloor conditions;
and
(iii)
Waves, wind, currents, tides, temperature, sea level rise
projections, snow and ice effects, marine growth, and water
depth.
The
applicant shall submit 4 paper copies and 1 electronic copy. If
the applicant submitted these data as part of the SAP or COP, the
applicant may reference the plan.
(6)
Summary of the engineering design data
(i) Loading information
(e.g., live, dead, environmental);
(ii) Structural
information (e.g., design-life; material types; cathode
protection systems; design criteria; fatigue life; jacket design;
deck design; production component design; foundation pilings and
templates, and mooring or tethering systems; fabrication or
installation guidelines);
(iii) Location of
foundation boreholes and foundation piles; and
(iv)
Foundation information (e.g., soil stability, design criteria).
The
applicant shall submit 4 paper copies and 1 electronic copy.
(7)
A complete set of design calculations
Self-explanatory.
The
applicant shall submit 4 paper copies and 1 electronic copy.
(8)
Project-specific studies used in the facility design or
installation
All
studies pertinent to facility design or installation, (e.g.,
oceanographic and soil reports)
The
applicant shall submit 4 paper copies and 1 electronic copy.
(9)
Description of the loads imposed on the facility
(i) Loads imposed by
jacket;
(ii) Turbines;
(iii) Transition pieces;
(iv) Foundations,
foundation pilings and templates, and anchoring systems; and
(v)
Mooring or tethering systems.
The
applicant shall submit 4 paper copies and 1 electronic copy.
(10)
Geotechnical report
A
list of all data from borings and recommended design parameters.
The
applicant shall submit 4 paper copies and 1 electronic copy.
(ii) For any floating
facility, the applicant’s design shall meet the requirements of the
U.S. Coast Guard for structural integrity and stability (e.g.,
verification of center of gravity). The design shall also consider:
foundations, foundation pilings and templates, and anchoring systems;
and mooring or tethering systems.
(iii) The applicant is
required to use a certified verified agent (CVA). The facility design
report shall include two paper copies of the following certification
statement: ‘‘The design of this structure has been certified by a
Council approved CVA to be in accordance with accepted engineering
practices and the approved SAP, or COP as appropriate. The certified
design and as-built plans and specifications shall be on file at
(given location).’’
(BB) Fabrication and
installation report. The applicant’s fabrication and installation
report shall describe how the applicant’s facilities shall be
fabricated and installed in accordance with the design criteria
identified in the facility design report; the applicant’s approved
SAP or COP; and generally accepted industry standards and practices.
The applicant’s fabrication and installation report shall
demonstrate how the applicant’s facilities shall be fabricated and
installed in a manner that conforms to the applicant’s
responsibilities listed in§ 8.5.2(B)(5) of this Part. The applicant
shall include the following items in the applicant’s fabrication
and installation report:
(i) Table 8.28: Contents of
the fabrication and installation report.
Required
documents:
Required
contents:
Other
requirements:
(1)
Cover letter
(i) Proposed facility
designation;
(ii) Area, name, and block
number; and
(iii)
The type of facility
The
applicant shall submit 4 paper copies and 1 electronic copy.
(2)
Schedule
Fabrication
and installation.
The
applicant shall submit 4 paper copies and 1 electronic copy.
(3)
Fabrication information
The
industry standards the applicant shall use to ensure the
facilities are fabricated to the design criteria identified in
the Facility Design Report.
The
applicant shall submit 4 paper copies and 1 electronic copy.
(4)
Installation process information
Details
associated with the deployment activities, equipment, and
materials, including offshore and onshore equipment and support,
and anchoring and mooring permits.
The
applicant shall submit 4 paper copies and 1 electronic copy.
(5)
Federal, State, and local permits (e.g., EPA, Army Corps of
Engineers)
Either
1 copy of the permit or information on the status of the
application.
The
applicant shall submit 4 paper copies and 1 electronic copy.
(6)
Environmental information
(i) Water discharge;
(ii) Waste disposal;
(iii) Vessel information;
and
(iv)
Onshore waste receiving treatment or disposal facilities.
The
applicant shall submit 4 paper copies and 1 electronic copy. If
the applicant submitted these data as part of the SAP or COP, the
applicant may reference the plan.
(7)
Project easement
Design
of any cables, pipelines, or facilities. Information on burial
methods and vessels.
The
applicant shall submit 4 paper copies and 1 electronic copy.
(ii) A CVA report shall
include the following: a fabrication and installation report which
shall include four paper copies of the following certification
statement: ‘‘The fabrication and installation of this structure
has been certified by a Council approved CVA to be in accordance with
accepted engineering practices and the approved SAP or COP as
appropriate.”
(16) Based on the Council’s
environmental and technical reviews, if approved, the Council may
specify terms and conditions to be incorporated into any approval the
Council may issue. The applicant shall submit a certification of
compliance annually (or another frequency as determined by the
Council) with certain terms and conditions which may include:
(AA) Summary reports that show
compliance with the terms and conditions which require certification;
and
(BB) A statement identifying
and describing any mitigation measures and monitoring methods, and
their effectiveness. If the applicant identified measures that were
not effective, then the applicant shall make recommendations for new
mitigation measures or monitoring methods.
(17) After the applicant’s
COP, facility design report, and fabrication and installation report
is approved, and the Council has issued a permit and lease for the
project site, construction shall begin by the date given in the
construction schedule included as a part of the approved COP, unless
the Council approves a deviation from the applicant’s schedule.
(18) The applicant shall seek
approval from the Council in writing before conducting any activities
not described in the applicant’s approved COP. The application
shall describe in detail the type of activities the applicant
proposes to conduct. The Council shall determine whether the
activities the applicant proposes are authorized by the applicant’s
existing COP or require a revision to the applicant’s COP. The
Council may request additional information from the applicant, if
necessary, to make this determination.
(19) The Council shall
periodically review the activities conducted under an approved COP.
The frequency and extent of the review shall be based on the
significance of any changes in available information, and on onshore
or offshore conditions affecting, or affected by, the activities
conducted under the applicant’s COP. If the review indicates that
the COP should be revised, the Council may require the applicant to
submit the needed revisions.
(20) The applicant shall
notify the Council, within five (5) business days, any time the
applicant ceases commercial operations, without an approved
suspension, under the applicant’s approved COP. If the applicant
ceases commercial operations for an indefinite period which extends
longer than 6 months, the Council may cancel the applicant’s lease,
and the applicant shall initiate the decommissioning process.
(21) The applicant shall
notify the Council in writing of the following events, within the
time periods provided:
(AA) Not later than 10 days
after commencing activities associated with the placement of
facilities on the lease area under a fabrication and installation
report;
(BB) Not later than 10 days
after completion of construction and installation activities under a
fabrication and installation report; and
(CC) At least 7 days before
commencing commercial operations.
(22) The applicant may
commence commercial operations within 30 days after the CVA has
submitted to the Council the final fabrication and installation
report.
(23) The applicant shall
submit a project modification and repair report to the Council,
demonstrating that all major repairs and modifications to a project
conform to accepted engineering practices.
(AA) A major repair is a
corrective action involving structural members affecting the
structural integrity of a portion of or all the facility.
(BB) A major modification is
an alteration involving structural members affecting the structural
integrity of a portion of or all the facility.
(CC) The report must also
identify the location of all records pertaining to the major repairs
or major modifications.
(DD) The Council may require
the applicant to use a CVA for project modifications and repairs.
G. Design, fabrication and
installation standards (formerly § 860.2.6)
1. Certified verification
agent. The certified verification agent (CVA) shall use good
engineering judgment and practices in conducting an independent
assessment of the design, fabrication and installation of the
facility. The CVA shall certify in the facility design report to the
Council that the facility is designed to withstand the environmental
and functional load conditions appropriate for the intended service
life at the proposed location. The CVA is paid for by the applicant,
but is approved and reports to the Council.
a. The applicant shall use a
CVA to review and certify the facility design report, the fabrication
and installation report, and the project modifications and repairs
report. The applicant shall use a CVA to:
(1) Ensure that the
applicant’s facilities are designed, fabricated, and installed in
conformance with accepted engineering practices and the facility
design report and fabrication and installation report;
(2) Ensure that repairs and
major modifications are completed in conformance with accepted
engineering practices; and
(3) Provide the Council
immediate reports of all incidents that affect the design,
fabrication, and installation of the project and its components.
b. Nominating a CVA for
Council approval. The applicant shall nominate a CVA for the Council
approval. The applicant shall specify whether the nomination is for
the facility design report, fabrication and installation report,
modification and repair report, or for any combination of these.
(1) For each CVA that the
applicant nominates, the applicant shall submit to the Council a list
of documents they shall forward to the CVA and a qualification
statement that includes the following:
(AA) Previous experience in
third-party verification or experience in the design, fabrication,
installation, or major modification of offshore energy facilities;
(BB) Technical capabilities of
the individual or the primary staff for the specific project;
(CC) Size and type of
organization or corporation;
(DD) In-house availability of,
or access to, appropriate technology (including computer programs,
hardware, and testing materials and equipment);
(EE) Ability to perform the
CVA functions for the specific project considering current
commitments;
(FF) Previous experience with
the Council requirements and procedures, if any; and
(GG) The level of work to be
performed by the CVA.
c. Individuals or
organizations acting as CVAs shall not function in any capacity that
shall create a conflict of interest, or the appearance of a conflict
of interest.
d. The verification shall be
conducted by or under the direct supervision of registered
professional engineers.
e. The Council shall approve
or disapprove the applicant’s CVA prior to construction.
f. The applicant shall
nominate a new CVA for the Council approval if the previously
approved CVA:
(1) Is no longer able to serve
in a CVA capacity for the project; or
(2) No longer meets the
requirements for a CVA set forth in this subpart.
g. The CVA shall conduct an
independent assessment of all proposed:
(1) Planning criteria;
(2) Operational requirements;
(3) Environmental loading
data;
(4) Load determinations;
(5) Stress analyses;
(6) Material designations;
(7) Soil and foundation
conditions;
(8) Safety factors; and
(9) Other pertinent parameters
of the proposed design.
h. For any floating facility,
the CVA shall ensure that any requirements of the U.S. Coast Guard
for structural integrity and stability (e.g., verification of center
of gravity), have been met. The CVA shall also consider:
(1) Foundations;
(2) Foundation pilings and
templates, and
(3) Anchoring systems.
i. The CVA shall do all of the
following:
(1) Use good engineering
judgment and practice in conducting an independent assessment of the
fabrication and installation activities;
(2) Monitor the fabrication
and installation of the facility;
(3) Make periodic onsite
inspections while fabrication is in progress and verify the items
required by § 8.5.2(G)(1)(k) of this Part;
(4) Make periodic onsite
inspections while installation is in progress and satisfy the
requirements of § 8.5.2(G)(1)(l) of this Part; and
(5) Certify in a report that
project components are fabricated and installed in accordance with
accepted engineering practices; the applicant’s approved COP or
SAP; and the fabrication and installation report.
(AA) The report shall also
identify the location of all records pertaining to fabrication and
installation.
(BB) The applicant may
commence commercial operations or other approved activities 30 days
after the Council receives that certification report, unless the
Council notifies the applicant within that time period of its
objections to the certification report.
j. The CVA shall monitor the
fabrication and installation of the facility to ensure that it has
been built and installed according to the facility design report and
fabrication and installation report.
(1) If the CVA finds that
fabrication and installation procedures have been changed or design
specifications have been modified, the CVA shall inform the applicant
and the Council.
k. The CVA shall make periodic
onsite inspections while fabrication is in progress and shall verify
the following items, as appropriate:
(1) Quality control by lessee
(or grant holder) and builder;
(2) Fabrication site
facilities;
(3) Material quality and
identification methods;
(4) Fabrication procedures
specified in the Fabrication and Installation Report, and adherence
to such procedures;
(5) Welder and welding
procedure qualification and identification;
(6) Adherence to structural
tolerances specified;
(7) Nondestructive examination
requirements and evaluation results of the specified examinations;
(8) Destructive testing
requirements and results;
(9) Repair procedures;
(10) Installation of corrosion
protection systems and splash-zone protection;
(11) Erection procedures to
ensure that overstressing of structural members does not occur;
(12) Alignment procedures;
(13) Dimensional check of the
overall structure, including any turrets, turret and- hull
interfaces, any mooring line and chain and riser tensioning line
segments; and
(14) Status of quality-control
records at various stages of fabrication.
l. The CVA shall make periodic
onsite inspections while installation is in progress and shall, as
appropriate, verify, witness, survey, or check, the installation
items required by this section. The CVA shall verify, as appropriate,
all of the following:
(1) Load out and initial
flotation procedures;
(2) Towing operation
procedures to the specified location, and review the towing records;
(3) Launching and uprighting
activities;
(4) Submergence activities;
(5) Pile or anchor
installations;
(6) Installation of mooring
and tethering systems;
(7) Transition pieces, support
structures, and component installations; and
(8) Installation at the
approved location according to the facility design report and the
fabrication and installation report.
m. For a fixed or floating
facility, the CVA shall verify that proper procedures were used
during the following:
(1) The loadout of the
transition pieces and support structures, piles, or structures from
each fabrication site; and
(2) The actual installation of
the facility or major modification and the related installation
activities.
n. For a floating facility,
the CVA shall verify that proper procedures were used during the
following:
(1) The loadout of the
facility;
(2) The installation of
foundation pilings and templates, and anchoring systems.
o. The CVA shall conduct an
onsite survey of the facility after transportation to the approved
location.
p. The CVA shall spot-check
the equipment, procedures, and recordkeeping as necessary to
determine compliance with the applicable documents incorporated by
reference and the regulations under this part.
q. The CVA shall prepare and
submit to the applicant and the Council all reports required by this
subpart. The CVA shall also submit interim reports to the applicant
and the Council, as requested by the Council. The CVA shall submit
one electronic copy and four paper copies of each final report to the
Council. In each report, the CVA shall:
(1) Give details of how, by
whom, and when the CVA activities were conducted;
(2) Describe the CVA’s
activities during the verification process;
(3) Summarize the CVA’s
findings; and
(4) Provide any additional
comments that the CVA deems necessary.
r. Until the Council releases
the applicant’s financial assurance under § 1.5.2(F) of this Part,
the applicant shall compile, retain, and make available to the
Council representatives, all of the following:
(1) The as-built drawings;
(2) The design assumptions and
analyses;
(3) A summary of the
fabrication and installation examination records;
(4) Results from the required
inspections and assessments;
(5) Records of repairs not
covered in the inspection report submitted.
s. The applicant shall record
and retain the original material test results of all primary
structural materials during all stages of construction until the
Council releases the applicant’s financial assurance under §
8.5.2(H) of this Part. Primary material is material that, should it
fail, would lead to a significant reduction in facility safety,
structural reliability, or operating capabilities. Items such as
steel brackets, deck stiffeners and secondary braces or beams would
not generally be considered primary structural members (or
materials).
t. The applicant shall provide
the Council with the location of these records in the certification
statement.
u. The Council may hire its
own CVA agent to review the work of the applicants CVA. The applicant
shall be responsible for the cost of the Council’s CVA. The
Council’s CVA shall perform those duties as assigned by the
Council.
H. Pre-construction standards
(formerly § 860.2.7)
1. The Council may issue a
permit for a period of up to 50 years to construct and operate an
offshore development. A lease shall be issued at the start of the
construction phase and payment shall commence at the end of the
construction phase. Lease payments shall be due when the project
becomes operational. Lease renewal shall be submitted five (5) years
before the end of the lease term. Council approval shall be required
for any assignment or transfer of the permit or lease. This provision
shall not apply to aquaculture permitting. Aquaculture permitting and
leasing are governed by the provisions of R.I. Gen. Laws Chapter
20-10 and § 00-1.3.1(K) of this Chapter.
2. Prior to construction, the
assent holder shall post a performance bond sufficient to ensure
removal of all structures at the end of the lease and restore the
site. The Council shall review the bond amount initially and every 3
years thereafter to ensure the amount is sufficient.
3. Prior to construction, the
assent holder shall show compliance with all federal and state agency
requirements, which may include but are not limited to the
requirements of the following agencies: the Rhode Island Coastal
Resources Management Council, the Rhode Island Department of
Environmental Management, the Rhode Island Energy Facilities Siting
Board, the Rhode Island Historical Preservation and Heritage
Commission, U.S. Department of the Interior Bureau of Ocean Energy
Management, Regulation and Enforcement, Army Corps of Engineers,
National Oceanic and Atmospheric Administration, U.S. Fish and
Wildlife Service, and the U.S. Environmental Protection Agency.
4. The Council shall consult
with the U.S. Coast Guard, the U.S. Navy, marine pilots, the
Fishermen’s Advisory Board as defined in § 11.3(E) of this
Subchapter, fishermen’s organizations, and recreational boating
organizations when scheduling offshore marine construction or
dredging activities. Where it is determined that there is a
significant conflict with season-limited commercial or recreational
fishing activities, recreational boating activities or scheduled
events, or other navigation uses, the Council shall modify or deny
activities to minimize conflict with these uses.
5. The Council shall require
the assent holder to provide for communication with commercial and
recreational fishermen, mariners, and recreational boaters regarding
offshore marine construction or dredging activities. Communication
shall be facilitated through a project website and shall complement
standard U.S. Coast Guard procedures such as Notices to Mariners for
notifying mariners of obstructions to navigation.
6. For all large-scale
offshore developments, underwater cables, and other development
projects as determined by the Council, the assent holder shall
designate and fund a third-party fisheries liaison. The fisheries
liaison must be knowledgeable about fisheries and shall facilitate
direct communication between commercial and recreational fishermen
and the project developer. Commercial and recreational fishermen
shall have regular contact with and direct access to the fisheries
liaison throughout all stages of an offshore development
(pre-construction; construction; operation; and decommissioning).
7. Where possible, offshore
developments should be designed in a configuration to minimize
adverse impacts on other user groups, which include but are not
limited to: recreational boaters and fishermen, commercial fishermen,
commercial ship operators, or other vessel operators in the project
area. Configurations which may minimize adverse impacts on vessel
traffic include, but are not limited to, the incorporation of a
traffic lane through a development to facilitate safe and direct
navigation through, rather than around, an offshore development.
8. Any assent holder of an
approved offshore development shall work with the Council when
designing the proposed facility to incorporate where possible mooring
mechanisms to allow safe public use of the areas surrounding the
installed turbine or other structure.
9. The facility shall be
designed in a manner that minimizes adverse impacts to navigation. As
part of its application package, the project applicant shall submit a
navigation risk assessment under the U.S. Coast Guard’s Navigation
and Vessel Inspection Circular 02-07, “Guidance on the Coast
Guard’s Roles and Responsibilities for Offshore Renewable Energy
Installations.”
10. Applications for projects
proposed to be sited in state waters pursuant to the Ocean SAMP shall
not have a significant impact on marine transportation, navigation,
and existing infrastructure. Where the Council, in consultation with
the U.S. Coast Guard, the U.S. Navy, NOAA, the U.S. Bureau of Ocean
Energy Management, Regulation and Enforcement, the U.S. Army Corps of
Engineers, marine pilots, the R.I. Port Safety and Security Forums,
or other entities, as applicable, determines that such an impact on
marine transportation, navigation, and existing infrastructure is
unacceptable, the Council shall require that the applicant modify the
proposal or the Council shall deny the proposal. For the purposes of
Chapter 7, Marine Transportation, Navigation and Infrastructure
policies and standards §§ 7.3.1 and 7.3.2 of this Subchapter,
impacts will be evaluated according to the same criteria used by the
U.S. Coast Guard, as follows; these criteria shall not be construed
to apply to any other Ocean SAMP chapters or policies:
a. Negligible: No measurable
impacts.
b. Minor: Adverse impacts to
the affected activity could be avoided with proper mitigation; or
impacts would not disrupt the normal or routine functions of the
affected activity or community; or once the impacting agent is
eliminated, the affected activity would return to a condition with no
measurable effects from the proposed action without any mitigation.
c. Moderate: Impacts to the
affected activity are unavoidable; and proper mitigation would reduce
impacts substantially during the life of the proposed action; or the
affected activity would have to adjust somewhat to account for
disruptions due to impacts of the proposed action; or once the
impacting agent is eliminated, the affected activity would return to
a condition with no measurable effects from the proposed action if
proper remedial action is taken.
d. Major: Impacts to the
affected activity are unavoidable; proper mitigation would reduce
impacts somewhat during the life of the proposed action; the affected
activity would experience unavoidable disruptions to a degree beyond
what is normally acceptable; and once the impacting agent is
eliminated, the affected activity may retain measurable effects of
the proposed action indefinitely, even if remedial action is taken.
11. Prior to construction, the
Applicant shall provide a letter from the U.S. Coast Guard showing it
meets all applicable U.S. Coast Guard standards.
I. Standards for construction
activities (formerly § 860.2.8)
1. The Assent holder shall use
the best available technology and techniques to minimize impacts to
the natural resources and existing human uses in the project area.
2. The Council shall require
the use of an environmental inspector to monitor construction
activities. The environmental inspector shall be a private,
third-party entity that is hired by the Assent holder, but is
approved and reports to the Council. The environmental inspector
shall possess all appropriate qualifications as determined by the
Council. This inspector service may be part of the CVA requirements.
3. Installation techniques for
all construction activities should be chosen to minimize sediment
disturbance. Jet plowing and horizontal directional drilling in
nearshore areas shall be required in the installation of underwater
transmission cables. Other technologies may be used provided the
applicant can demonstrate they are as effective, or more effective,
than these techniques in minimizing sediment disturbance.
4. All construction activities
shall comply with the policies and standards outlined in the Rhode
Island Coastal Resources Management Program (aka the ‘Red Book’;
Subchapter 00 Part 1 of this Chapter), as well as the regulations of
other relevant state and federal agencies.
5. The applicant shall conduct
all activities on the applicant’s permit under this part in a
manner that conforms with the applicant’s responsibilities in §
8.5.2 of this Part, and using:
a. Trained personnel; and
b. Technologies, precautions,
and techniques that shall not cause undue harm or damage to natural
resources, including their physical, atmospheric, chemical and
biological components.
6. The Assent holder shall be
required to use the best available technology and techniques to
mitigate any associated adverse impacts of offshore renewable energy
development.
a. As required, the applicant
shall submit to the Council:
(1) Measures designed to avoid
or minimize adverse effects and any potential incidental take of
endangered or threatened species as well as all marine mammals;
(2) Measures designed to avoid
likely adverse modification or destruction of designated critical
habitat of such endangered or threatened species; and
(3) The applicant’s
agreement to monitor for the incidental take of the species and
adverse effects on the critical habitat, and provide the results of
the monitoring to the Council as required; and
7. If the Assent holder, the
Assent holder’s subcontractors, or any agent acting on the Assent
holder’s behalf discovers a potential archaeological resource while
conducting construction activities, or any other activity related to
the Assent holder’s project, the applicant shall:
a. Immediately halt all
seafloor disturbing activities within the area of the discovery;
b. Notify the Council of the
discovery within 24 hours; and
c. Keep the location of the
discovery confidential and not take any action that may adversely
affect the archaeological resource until the Council has made an
evaluation and instructed the applicant on how to proceed.
(1) The Council may require
the Assent holder to conduct additional investigations to determine
if the resource is eligible for listing in the National Register of
Historic Places under 36 C.F.R. § 60.4. The Council shall do this
if:
(AA) The site has been
impacted by the Assent holder’s project activities; or
(BB) Impacts to the site or to
the area of potential effect cannot be avoided.
(2) If the Council incurs
costs in protecting the resource, under 16 U.S.C § 470h-2(g)
(National Historic Preservation Act), the Council may charge the
applicant reasonable costs for carrying out preservation
responsibilities.
8. Post construction, the
Assent holder shall provide a side scan sonar survey of the entire
construction site to verify that there is no post construction debris
left at the project site. These side-scan sonar survey results shall
be filed with the Council within 90 days of the end of the
construction period. The results of this side-scan survey shall be
verified by a third-party reviewer, who shall be hired by the Assent
holder but who is pre-approved by and reports to the Council.
9. All pile-driving or
drilling activities shall comply with any mandatory best management
practices established by the Council in coordination with the Joint
Agency Working Group and which are incorporated into the RICRMP.
10. The Council may require
the Assent holder to hire a CVA to perform periodic inspections of
the structure(s) during the life of those structure(s). The CVA shall
work for and be responsible to the council.
J. Monitoring requirements
(formerly § 860.2.9)
1. The Council in coordination
with the Joint Agency Working Group shall determine requirements for
monitoring prior to, during, and post construction. Specific
monitoring requirements shall be determined on a project-by-project
basis and may include but are not limited to the monitoring of:
a. Coastal processes and
physical oceanography
b. Underwater noise
c. Benthic ecology
d. Avian species
e. Marine mammals
f. Sea turtles
g. Fish and fish habitat
h. Commercial and recreational
fishing
i. Recreation and tourism
j. Marine transportation,
navigation and existing infrastructure
k. Cultural and historic
resources
2. The Council shall require
where appropriate that project developers perform systematic
observations of recreational boating intensity at the project area at
least three times: pre-construction; during construction; and
post-construction. Observations may be made while conducting other
field work or aerial surveys and may include either visual surveys or
analysis of aerial photography or video photography. The Council
shall require where appropriate that observations capture both
weekdays and weekends and reflect high-activity periods including the
July 4th holiday weekend and the week in June when Block Island Race
Week takes place. The quantitative results of such observations,
including raw boat counts and average number of vessels per day, will
be provided to the Council.
3. The items listed below
shall be required for all offshore developments:
a. A biological assessment of
commercially and recreationally targeted species shall be required
within the project area for all offshore developments. This
assessment shall assess the relative abundance, distribution, and
different life stages of these species at all four seasons of the
year. This assessment shall comprise a series of surveys, employing
survey equipment and methods that are appropriate for sampling
finfish, shellfish, and crustacean species at the project’s
proposed location. Such an assessment shall be performed at least
four (4) times: pre-construction (to assess baseline conditions);
during construction; and at two different intervals during operation
(i.e., 1 year after construction and then post-construction). At each
time this assessment must capture all four seasons of the year. This
assessment may include evaluation of survey data collected through an
existing survey program, if data are available for the proposed site.
The Council will not require this assessment for proposed projects
within the renewable energy zone that are proposed within 2 years of
the adoption of the Ocean SAMP.
b. An assessment of commercial
and recreational fisheries effort, landings, and landings value shall
be required for all proposed offshore developments. Assessment shall
focus on the proposed project area and alternatives. This assessment
shall evaluate commercial and recreational fishing effort, landings,
and landings value at three different stages: pre-construction (to
assess baseline conditions); during construction; and during
operation. At each stage, all four seasons of the year must be
evaluated. Assessment may use existing fisheries monitoring data but
shall be supplemented by interviews with commercial and recreational
fishermen. Assessment shall address whether fishing effort, landings,
and landings value has changed in comparison to baseline conditions.
The Council will not require this assessment for proposed projects
within the renewable energy zone that are proposed within 2 years of
the adoption of the Ocean SAMP.
4. The Council in coordination
with the Joint Agency Working Group may also require facility and
infrastructure monitoring requirements that may include but are not
limited to:
a. Post construction
monitoring including regular visual inspection of inner array cables
and the primary export cable to ensure proper burial, foundation and
substructure inspection.