250-RICR-130-05-1
250-RICR-130-05-1. Rules and Regulations for Dam Safety (version Technical Revision, 12/20/2007 to 12/20/2007)
250-RICR-130-05-1
TITLE 250 – DEPARTMENT OF ENVIRONMENTAL MANAGEMENT
CHAPTER 130 – COMPLIANCE & INSPECTION
SUBCHAPTER 05 – DAM SAFETY
PART 1 – Rules and Regulations for Dam Safety
1.1
Purpose
These rules establish requirements for implementation of Chapter 46-19, "Inspection of
Dams and Reservoirs," of the R.I. Gen. Laws and to provide for the safety of dams to
protect the public, real property and natural resources by establishing reasonable
standards and to create a public record for reviewing the performance of dams.
1.2
Authority
These rules and regulations are promulgated pursuant to the requirements and
provisions of Chapter 42-17.1, “Department of Environmental Management”, Chapter
42-17.6, "Administrative Penalties for Environmental Violations" and Chapter 46-19,
“Inspection of Dams and Reservoirs” in accordance with the provisions of Chapter 42-
35, “Administrative Procedures Act”, of the R.I. Gen. Laws.
1.3
Findings and Policy
The following administrative findings are made as a basis for these rules and
regulations:
A.
Rhode Island has approximately 674 dams of varying age, size and state of
repair.
B.
Failure or misoperation of high hazard dams or significant hazard dams (both of
which represent approximately 30 percent of all dams in the state) will result in a
probable loss of human life or cause major economic loss, disruption of lifeline
facilities or impact other concerns.
C.
Investigations of dam failures have found that approximately 60 percent were
caused by lack of maintenance, resulting in piping, surface erosion, slope
protection damage or deterioration of outlet pipes.
D.
Many of these dams, both public and private, have not been properly maintained
through the years and pose a significant threat to public safety, real property and
natural resources.
E.
Since dam related laws were adopted, the threat to public safety, real property
and natural resources has increased due to deterioration of dams and
development in downstream areas over which dam owners do not necessarily
have control.
F.
It is in the best interest of the state, the cities and towns of the state, and the
citizen's thereof, to maintain a safe dam infrastructure.
G.
In order to maintain a safe dam infrastructure, a collaborative effort is required by
state and municipal officials, private dam owners and elected officials.
1.4
Application
The terms and provisions of these rules and regulations shall be liberally construed to
permit the Department to effectuate the purposes of state law, goals and policies.
Nothing in these rules and regulations shall be deemed to prohibit a dam owner or
person maintaining or having control of a dam, from seeking assistance from a
municipality or prohibit a municipality from assisting a dam owner in complying with
these rules and regulations.
1.5
Definitions
For the purposes of these regulations the following terms shall have the following
meanings:
A.
"Appurtenant works” means any ancillary feature of a dam including such
structures as dikes, training walls, spillways, either in the dam or separate there
from, low level outlet works, and water conduits such as tunnels, channels,
pipelines or penstocks, either through the dam or its abutments.
B.
“Dam” means any barrier made by humans, including appurtenant works that
impounds or diverts water.
C.
“Department” means the Department of Environmental Management and may be
used interchangeably with Director.
D.
“Department dam engineer” means an individual employed by the Department
who possesses a Bachelor of Science degree in engineering and has
demonstrated, through a combination of education, experience, and/or training,
that he/she is qualified to perform visual inspections.
E.
“Detailed investigation” means all studies, investigations and analyses
appropriate to evaluate the structural safety and hydraulic capacity of a dam or
reservoir and appurtenant works.
F.
“Director” means the Director of the Department of Environmental Management,
or his or her designee and may be used interchangeably with Department.
G.
“Embankment” means the fill material, including but not limited to rock or earth,
placed to provide a permanent barrier that impounds water.
H.
“Freshwater wetlands” means those areas as defined in R. I. Gen. Laws § 2-1-
18, et. seq., and the Wetlands regulations.
I.
“Hazard classification” means a rating for a dam that relates to the probable
consequences of failure or misoperation of the dam, which is a determination
made by the Director based on an assessment of loss of human life, damages to
properties or structures located downstream of the reservoir, or loss of use as a
drinking water supply. This rating has no relationship to the current condition of
the dam. A higher hazard dam does not imply that it is more likely to fail or be
misoperated than a lower hazard dam.
J.
“Height” means the vertical distance from the elevation of the uppermost surface
of a dam to the lowest point of natural ground, including any stream channel,
along the downstream toe of the dam.
K.
“High hazard dam” means a dam where failure or misoperation will result in a
probable loss of human life.
L.
“Hydraulic” means the behavior of water relative to the dam. It is the manner in
which water in the reservoir is passed over or through the dam, via an outlet such
as a spillway or low level outlet.
M.
“Hydrologic” means the volume and speed at which precipitation flows along the
earth, combines into streams and discharges into a reservoir.
N.
“Lifeline facilities” means essential facilities, the loss of which can result in
indirect threats to life. Lifeline facilities may include hospitals, transportation links
(highways, bridges, airports, rail lines, waterways, ports and harbor facilities and
emergency evacuation routes), and utility systems (electric power plants, gas
and liquid fuel pipelines, telecommunication systems, water supply and waste
water treatment facilities).
O.
“Low hazard dam” means a dam where failure or misoperation results in no
probable loss of human life and low economic losses.
P.
“Maintenance” means minor work on a dam necessary to maintain the dam in
proper working order, including activities such as filling minor erosion areas,
mowing or clearing vegetation provided that it does not affect the integrity of the
dam, lubricating and exercising equipment and re-pointing masonry areas.
Maintenance does not include repair of a dam or substantial alteration of a dam.
Q.
“Owner” means the person or persons, including any individual, firm, partnership,
association, syndicate, company, trust, corporation, municipality, agency, political
or administrative subdivision of the state or any legal entity of any kind holding
legal title to a dam.
R.
“Person maintaining or having control of a dam” means the person or persons,
including any individual, firm, partnership, association, syndicate, company, trust,
corporation, municipality, agency, political or administrative subdivision of the
state or any legal entity of any kind having authority to operate or maintain a
dam.
S.
“Piping” means the progressive development of internal erosion by seepage
through the dam. Piping appears downstream as a hole or a discharging flow of
water that includes soil particles from the dam embankment or foundation.
T.
“Probable loss of human life” means loss of human life that is likely to occur, or
reasonably or realistically expected. This definition does not include persons
who are only incidentally in the potential inundation area downstream of a dam.
Examples include walking on the dam, driving on lightly traveled roads on or
downstream of the dam and recreating downstream of the dam provided the area
is not an established recreational area.
U.
“Qualified engineer” means a professional engineer fully registered in the State of
Rhode Island, who is experienced with dam inspection, design, construction and
repair.
V.
“Registered owner” means a dam owner who has been issued a certificate of
registration by the Department.
W.
“Regulated dam” means a low hazard dam that is six (6) feet or more in height or
has fifteen (15) acre-feet or more of storage capacity; or a high hazard dam; or a
significant hazard dam. An acre-foot is a unit of volume equal to 43,560 cubic
feet or 325,830 gallons (a measure that would cover one acre to a depth of one
foot).
X.
“Removal” means the destruction or breaching of a dam to the extent that the
dam no longer impounds or diverts water.
Y.
“Repair ” means any work performed at a dam that may affect the integrity of the
dam, including certain cutting or removal of trees where the resulting
decomposition of the tree root system could jeopardize the integrity of the dam,
work requiring excavation into the embankment fill or foundation of a dam, work
requiring reinforcement of the embankment or work requiring removal or
replacement of major structural components of a dam; or any related, new,
temporary or permanent access way(s) that may be required within freshwater
wetlands.
Z.
“Reservoir” means the body of water that is impounded or diverted by a dam.
AA.
“Significant hazard dam” means a dam where failure or misoperation results in
no probable loss of human life but can cause major economic loss, disruption of
lifeline facilities or impact other concerns detrimental to the public’s health, safety
or welfare. Examples of major economic loss include but are not limited to
washout of a state or federal highway, washout of two or more municipal roads,
loss of vehicular access to residences, (e.g. a dead end road whereby
emergency personnel could no longer access residences beyond the washout
area) or damage to a few structures.
BB.
“Spillway” means a structure, a low area in natural grade or any part of the dam
which has been designed or relied upon to allow normal flow or major flood flow
to pass over or through while being discharged from a reservoir.
CC.
“Substantial alteration” means any physical modification to a dam that results in a
permanent change in the water elevation of the reservoir or in water flow
downstream of the dam.
DD.
“Unsafe dam” means the condition of a regulated dam, as determined by the
Director, is such that an unreasonable risk of failure exists that will result in a
probable loss of human life or major economic loss. Among the conditions that
would result in this determination are: excessive vegetation that does not allow
the Director to perform a complete visual inspection of a dam, excessive
seepage or piping, significant erosion problems, inadequate spillway capacity,
inadequate capacity and/or condition of control structure(s) or serious structural
deficiencies, including movement of the structure or major cracking.
EE.
“Visual inspection” means a visual, technical evaluation of the physical conditions
of a dam that affect performance of the structure.
FF.
“Wetlands regulations” means the “Rules and Regulations Governing the
Administration and Enforcement of the Freshwater Wetlands Act," 250-RICR-
150-15-1.
1.6
Responsibility of Dam Owners
A.
All owners of high hazard dams and significant hazard dams shall keep their
dams and appurtenant works in a safe condition.
B.
All owners or precedent owners are responsible for liability for damage to
property of others or injury to persons, including but not limited to loss of life,
resulting by the following of the pond raised by the dam, by the stopping or
raising of the water either above or below the dam, by the backing of water or by
the flowing out of any fall of water by means of the dam.
C.
These regulations shall not be interpreted as relieving any owner or person
maintaining or having control of a dam from responsibility, or lessening such
responsibility, for any damages to persons or property caused by defects,
inappropriate operation or inadequate maintenance or as creating liability on the
part of the Department or the Director.
D.
Compliance with these rules and regulations does not relieve an owner or person
maintaining or having control of a dam of any obligation to comply with any other
applicable laws or regulations administered by, through or for the Department or
any other government entity.
1.7
Prohibitions
A.
No repair of a high hazard dam or significant hazard dam shall occur until plans
and specifications of the proposed work have been filed with and approved by
the Director in accordance with these rules and regulations.
B.
No repair of a low hazard dam shall occur without approval of the Director in
accordance with the Wetlands regulations unless specifically exempted under the
Wetlands regulations.
C.
No maintenance of a high hazard dam or significant hazard dam shall occur
without approval of the Director unless specifically exempted under these rules
and regulations.
D.
No maintenance of a low hazard dam shall occur without approval of the Director
in accordance with the Wetlands regulations unless specifically exempted under
the Wetlands regulations.
E.
No new construction, substantial alteration, or removal of a dam shall occur
without approval of the Director.
1.8
Registration and Notification
A.
The owner of a regulated dam shall file with the Department, within sixty (60)
days of promulgation of these rules and regulations, a fully completed registration
form to be provided by the Director.
B.
The owner of a regulated dam shall notify the Director and the local municipality’s
emergency management authority having jurisdiction, of the transfer of legal title
of such dam or a change in the mailing address, telephone number or
emergency contact person not later than thirty (30) days after the date of such
transfer or change and provide to the Director the new owner, mailing address,
telephone number, or emergency contact person.
C.
The Director, following receipt of a fully completed registration form, shall issue a
certificate of registration to the owner of a regulated dam identifying the proper
name, registration number and current hazard classification of the dam.
D.
The owner of a regulated dam, upon written request from the Department, shall
make available to the Director, all the existing surveys, plans, drawings and
reports related to the dam, in possession of or available to the owner, that may
be required by the Director for the purposes of dam safety.
E.
The owner of a regulated dam, upon written request from the Department, shall
prepare all the necessary surveys, plans, drawings and reports related to the
dam that may be required by the Director for the purposes of dam safety.
1.9
Hazard Classification
A.
The Department shall classify each regulated dam in the State as a high hazard
dam, significant hazard dam or low hazard dam. The Director shall send a notice
of the proposed classification to the registered owner of a dam. The dam owner
may contest the proposed classification pursuant to §1.15 of this Part. The
Director shall maintain a list of all classified dams and shall make the list
available to the public.
B.
The Director shall examine each regulated dam as often as he or she shall deem
necessary to assess whether the dam warrants reclassification.
C.
Any person may petition the Director for reclassification of a dam. The petition
must be in writing and must include a written report prepared by a qualified
engineer that details the findings and analyses that support the engineer’s
opinion that the dam should be reclassified.
1.10 Approvals
A.
Maintenance of a High or Significant Hazard Dam
1.
Maintenance of a high hazard dam or significant hazard dam, except for
certain cutting or removal of trees, does not require an approval from the
Department. To be exempt from Department approval, the cutting or
removal of trees must be limited to those trees with a diameter less than 6
inches (measured 2 feet above the ground level) or that do not affect the
integrity of the dam. If trees have a diameter greater than 6 inches
(measured 2 feet above the ground level) then the dam owner shall first
consult with a qualified engineer who will determine if the cutting or
removal could jeopardize the integrity of the dam. The owner shall obtain
a written report from the qualified engineer, if the qualified engineer
determines that the cutting or removal is not a threat to the integrity of the
dam, and keep a copy of the report on file. The report does not have to be
filed with the Department. The owner shall file an application for repair of
the dam in accordance with these rules and regulations if the qualified
engineer determines that the cutting or removal is a threat to the integrity
of the dam. Mowing or cutting of vegetation may be performed without an
approval from the Department provided it is limited to areas on the dam
and adjacent to the dam such that an area does not exceed fifteen (15)
feet from the embankment, spillway or low level control structure. All other
mowing or cutting of vegetation within freshwater wetlands will require a
permit from the Director unless specifically exempted under the Wetlands
regulations. Areas exceeding fifteen (15) feet from the embankment,
spillway or low level control structure that have been historically mowed
and maintained are specifically exempted under the Wetlands regulations.
These areas can continue to be mowed without a permit from the Director.
2.
All maintenance activities shall comply with the following:
a.
Best management practices for erosion and sediment controls must
be used. All controls must be maintained in effective operating
condition during the activity, and all exposed soil and other fills
must be permanently stabilized at the earliest possible date. (For
guidance see Rhode Island Soil Erosion and Sediment Control
Handbook and Rhode Island Stormwater Design and Installation
Standards Manual).
b.
All equipment used for maintenance activities shall be removed
from any freshwater wetland upon completion of the maintenance
project.
c.
All maintenance activities shall be protective of water quality and
freshwater wetland functions and values so as to prevent
pollutants, sediment, direct discharge of stormwater runoff, or any
material foreign to waters of the State including freshwater
wetlands, or hazardous to life, from entering any waters of the State
including freshwater wetlands.
B.
Repair of a High or Significant Hazard Dam
1.
The dam owner must submit an application for repair of a high hazard
dam or significant hazard dam directly to the Department’s Dam Safety
Program. Applications shall be in writing and on a form prescribed by the
Director and shall contain such documentation and information as the
Director may require, which may include but not be limited to the following:
a.
A locus map indicating the location of the dam in relation to other
fixed infrastructure in the community such as roads, etc.
b.
Written justification explaining the need for the work.
c.
Three (3) sets of plans and specifications for the proposed work,
prepared and stamped by a qualified engineer. The Department
reserves the right to request additional copies for coordination with
other State or federal permitting agencies.
d.
Plans drawn in sufficient detail to clearly indicate the extent and
complexity of the work, including plan, profile and cross section
views, along with any new, temporary or permanent access ways.
e.
Written description of the method of construction.
f.
Supporting computations and field measurements for all
assumptions and design work (hydrologic, hydraulic, structural,
geotechnical).
g.
Criteria and basis for selection of the design.
h.
Specifications of all material to be used in the repair.
i.
Estimated construction schedule including commencement and
completion of the repairs.
j.
Amount (estimated vertical, horizontal and areal) and schedule of
reservoir drawdown and schedule of reservoir recovery.
k.
If a temporary water by-pass or diversion is proposed, the dam
owner shall provide plans, details and calculations for such by-pass
or diversion. The design of the by-pass or diversion shall be
capable of accommodating peak flows from a minimum of 95% of
all storm events that may be expected to occur within the proposed
construction period and contain a contingency provision to safely
accommodate a 100-year, 24 hour duration Type III storm event.
The design of the by-pass or diversion shall be capable of
accommodating, at a minimum, peak flows in accordance with the
following table.
Construction Duration Required Design Storm
up to 3 months
5 year
3 months to 6 months
10 year
6 months to 1 year
20 year
1 year to 2 years
50 year
l.
Supporting documentation to demonstrate that there is no
practicable alternative to the proposed repair that would have less
adverse impact on freshwater wetlands, that addresses the
impact avoidance and minimization criteria specified in Appendix I.
A practicable alternative is defined as one that is “available and
capable of being done after taking into consideration cost, existing
technology and logistics in light of the overall project purposes”.
m.
Contact name and telephone number of person(s) responsible for
repair.
n.
Statement that a record drawing, certified by the qualified engineer
responsible for design that the dam was repaired in conformance
with the plan approved by the Director, will be provided to the
Director upon completion of the work.
2.
The Director shall provide dam owners with written notice for any
additional information the Director requires.
C.
Emergency Repair of a High or Significant Hazard Dam
1.
The Director may grant verbal approval of an emergency repair consistent
with the following requirements:
a.
Verbal or written request for permission to proceed with an
emergency repair must be made by the owner or person
maintaining or having control of a dam.
b.
The request must inform the Department of at least the following:
(1)
An explanation of the problem necessitating an emergency
repair.
(2)
The reason why the problem represents an imminent threat
to public safety or real property.
(3)
The location of the dam on which the repair is required.
(4)
The proposed actions necessary to correct the problem and
complete the repair.
(5)
The person responsible for overseeing the repair, including
means of contact.
(6)
The means proposed to restore any wetland areas following
the emergency repair that may be required by the Director.
c.
Any emergency repair undertaken shall not result in a significant
alteration of any wetland unless authorized by a permit issued by
the Director.
d.
Alteration of wetlands shall not exceed work beyond that necessary
to abate the emergency.
e.
Unless otherwise informed by the Director, the dam owner must
submit a report, a record drawing and a permit application to the
Department no later than thirty (30) days following the emergency
repair. The report must explain the emergency repair undertaken,
and the short-term and long-term effects that the emergency repair
had on abating the emergency, any wetlands affected, any
permanent, significant alteration which resulted from the activity,
and all restoration activities undertaken, or which may still be
required.
f.
The time limitation for performance of an emergency repair shall
not exceed ten (10) days following initial approval by the
Department unless written approval for an extension is obtained
from the Department.
g.
Following submission of the record drawing required above, the
applicant is required to comply with any additional activities
necessary to prevent significant wetland alterations or to obtain a
permit as detailed in writing by the Department.
2.
An emergency repair may be taken by the owner or person maintaining or
having control of a dam without prior Department approval in accordance
with § 1.12 of this Part. The Department will evaluate the emergency
repair to determine if it is consistent with § 1.10 (C) of this Part. The
Department will consider good faith efforts made by the owner or person
maintaining or having control of the dam to obtain prior approval from the
Department for the emergency repair.
D.
Procedures for Review of Applications
1.
In consideration of the application, the Department may use, but is not
limited to, the criteria, manuals and procedures used by the following
agencies:
a.
The United States Army Corps of Engineers.
b.
The United States Department of Agriculture, Natural Resources
Conservation Services.
c.
The United States Department of Energy, Federal Energy
Regulatory Commission.
d.
The United States Department of Homeland Security, Federal
Emergency Management Agency.
e.
The United States Department of the Interior, Bureau of
Reclamation.
2.
At any time during the review, the Director may:
a.
Require that the dam owner provide such information as the
Director deems necessary for the review of the application.
b.
Issue an approval requiring such terms, conditions, management
practices and operation and maintenance requirements as deemed
necessary to comply with the requirements of applicable state laws.
c.
Deny the application for failure to satisfy the requirements of
applicable laws and advise the dam owner of the right to appeal
under § 1.15 of this Part. A denial may be based on, but is not
limited to, any of the following:
(1)
Failure to submit any information required by the
Department.
(2)
Failure to provide clear and convincing documentation
demonstrating, to the satisfaction of the Director, that the
project will not violate these rules and regulations.
E.
Public Notice
The Director may require the applicant to provide written notice of the planned repair to
abutters of the dam and reservoir and to the municipality(s) in which the dam and
reservoir are located. In general, an abutter will be limited to a property owner with
frontage on the reservoir. The Director may prescribe a form or a format for such
notice.
F.
Effect of Approval
1.
The issuance of an approval mandates compliance with all terms,
conditions, management practices and operation and maintenance
requirements set forth in the approval.
2.
The issuance of an approval does not relieve any person of the continuing
responsibility to comply with any other applicable federal, state or local law
or regulation.
3.
The issuance of an approval does not relieve any person of the
responsibility for obtaining any other necessary permits or approvals from
any federal, state, regional, or local agency.
4.
The issuance of an approval does not authorize any injury to persons or
property or invasion of other private rights, or any infringement of federal,
state or local law or regulations.
G.
Modification, Suspension or Revocation of Approval
1.
The Director may modify, suspend, or revoke, in whole or in part, an
approval for cause, including, but not limited to, the following:
a.
Information indicating that the project will result in an unsafe
condition of the dam.
b.
The existence of a factor or factors which, if properly and timely
brought to the attention of the Director, would have justified the
application of more or less stringent conditions than required by
these regulations, but only if such factor(s) arose after the approval
was issued.
c.
Where circumstances on which the approval was based have
materially and substantially changed since the approval was
issued, including but not limited to pertinent amendment of these
rules and regulations.
d.
The information or data submitted by the dam owner either on the
form required or in any other material in support of the application is
found to be false, misleading or erroneous.
e.
The project is not undertaken in strict compliance with the
conditions or provisions of any approval issued by the Department.
2.
A notice of revocation/suspension of an approval will be in the form of a
certified letter notifying the dam owner of the revocation or suspension
and the reasons why the approval is being revoked or suspended. Such
notice shall be in conformance with the Administrative Procedures Act,
R.I. Gen. Laws §§ 42-35-9(b) and 42-35-14.
3.
The dam owner issued a notice of revocation/suspension of an approval
may request an adjudicatory hearing to contest the revocation as set forth
in the provisions of § 1.15 of this Part. A notice of revocation/suspension
of an approval automatically becomes a final order of the Director
enforceable in Superior Court upon failure to request said adjudicatory
hearing.
4.
Modification of an approval shall be in accordance with § Part 1.10 (B) of
this Part.
1.11 Inspections
A.
Scheduled Inspections
1.
Regulated dams shall be inspected in accordance with the following
schedule. These time periods are the maximum time between inspections
and more frequent inspections may be performed at the discretion of the
Director.
Hazard
Classification
Minimum Inspection
Frequency
Type of Inspection
High
2 years
Visual
Significant
5 years
Visual
Low
5 years
Hazard Classification
Assessment
2.
The Director shall periodically perform or require the owner to perform a
visual inspection of all high hazard dams and significant hazard dams. The
Director will notify the owner by certified letter in the event that the
Department will require the owner to perform a visual inspection of the
dam. The owner must then retain a qualified engineer to perform a visual
inspection of the dam. Visual inspection by a qualified engineer must be
completed within sixty (60) days following receipt of notification from the
Director.
3.
At any time, the owner may elect to employ the services of a qualified
engineer to perform a visual inspection of his or her dam.
4.
Whenever the findings of the visual inspection reveal, in the opinion of the
Director, that the dam may be unsafe, the owner shall be required to retain
a qualified engineer to perform a detailed investigation of the dam and to
provide a schedule by which any work needed shall be accomplished.
The owner shall be responsible for completing all work required by the
Director and in a reasonable time frame required by the Director.
5.
Evaluations of regulated, low hazard dams shall be conducted by the
Director at least every five (5) years to determine whether conditions have
changed over time that warrant raising the hazard classification to
significant or high. If the Director determines the classification of a low
hazard dam should be raised to significant or high, the owner shall be
informed of the classification change in accordance with § 1.9 (B) of this
Part.
B.
Unscheduled Inspections
1.
Any person who has cause to believe that an unsafe dam exists may
make a request to the Director to inspect the dam. If in the opinion of the
Director, the failure of the dam will result in a probable loss of human life
or cause major economic loss, disruption of lifeline facilities or impact
other concerns detrimental to the public’s health, safety or welfare, then
the Director shall perform a visual inspection, or cause a visual inspection
to be performed, of the dam to determine if the dam is unsafe.
2.
The Director shall, whenever he or she has cause to believe that an
unsafe dam exists, perform a visual inspection, or cause a visual
inspection to be performed, of the dam to determine if the dam is unsafe.
C.
Inspections
1.
Visual Inspections
A qualified engineer or a Department dam engineer must perform a visual
inspection. The visual inspection shall include an assessment of the
condition of the major components of the dam subjectively rated as good,
fair or poor. The major components of a dam are the embankment(s), the
spillway(s) and the low level control structure(s). Good is defined as
meeting minimum guidelines, where no irregularities are observed and the
component appears to be maintained properly. Fair is defined as a
component that requires maintenance. Poor is defined as a component
that has deteriorated beyond a maintenance issue and requires repair; the
component no longer functions as it was originally intended.
2.
Detailed Investigations
A qualified engineer must perform a detailed investigation. A detailed
investigation may include soil analysis, concrete or earth stability analysis,
materials testing, foundation explorations, hydraulic and hydrologic
analysis, including basin studies, flood potential, and an analysis of the
dam’s ability to pass flood waters.
D.
Inspection Reports
A report must be prepared for each visual inspection or detailed investigation. If
deficiencies are found, the report must identify the specific deficiencies and, when
warranted, specify further investigation or corrective measures. The report, completed
by a qualified engineer retained by a dam owner, must provide a recommended
schedule to complete any work identified as necessary to correct the deficiencies noted
in the report. Such reports must be provided to the dam owner and the Director within
thirty (30) days of the date of the visual inspection or within sixty (60) days of the date of
the detailed investigation.
1.12 Unsafe Dams
A.
Whenever the Director determines that a dam is unsafe the Director shall
determine whether the water in the reservoir shall be drawn off in whole or in
part, and the actions necessary to make the dam safe.
B.
The Director shall notify the owner or person maintaining or having control of the
dam, by certified mail, that the dam is unsafe, the actions necessary to make the
dam safe and a schedule to complete the actions.
C.
The Director may notify the owner or person maintaining or having control of the
dam, by certified mail that the dam is unsafe after completing his/her own
inspection or after receiving an inspection report completed by a qualified
engineer.
D.
The Director may, pursuant to R.I. Gen. Laws § 42-17.1-2(ii) (A), issue an
immediate compliance order stating the existence of the unsafe condition and the
action deemed necessary to correct the unsafe condition. The Director may
order the water in the reservoir to be drawn off, in whole or in part. The
immediate compliance order shall become effective immediately upon service or
within such time as is specified by the Director in such order.
E.
Any emergency action taken by the owner or person maintaining or having
control of a dam shall immediately be reported by the dam owner to the Director
and the municipality(s) in which the dam and reservoir lies. The owner or person
maintaining or having control of a dam shall also report, by telephone within
twenty-four (24) hours and in writing within three (3) days, the emergency action
taken.
F.
If water has been drawn off or the dam has been altered pursuant to an order by
the Director, the reservoir shall not be refilled without approval of the Director.
G.
If the owner or person maintaining or having control of a dam fails to comply with
an order of the Director, the Director may also, by summons and complaint, seek
to enforce the order in a court of competent jurisdiction.
1.13 Access
The Director shall conduct all inspections in accordance with the “Administrative
Inspection Guidelines”, adopted on January 23, 2003, and any amendments thereto.
1.14 Enforcement Actions
As set forth in R.I. Gen. Laws §§ 42-17.1-1 and 42-17.6-1 et seq., the Director shall
have the power to issue enforcement notices, orders, administrative penalties or other
requirements to ensure compliance with these rules and regulations. The Director may
also provide written or verbal warning of his/her intent to undertake enforcement action,
but is not required to do so. Nothing in these rules and regulations shall limit the
authority of the attorney general to prosecute offenders as required by law. The
Department shall forward a copy of the enforcement notices and/or orders to recognized
watershed councils in accordance with the Rules and Regulations of the Rhode Island
Rivers Council for Watershed Council Grants and Notification of Proposed Actions to
Watershed Councils and the municipality wherein the dam is located.
1.15 Appeals
A.
The procedures for appeal of Departmental decisions pursuant to the provisions
of Chapter 42-35 of the R.I. Gen. Laws are contained in the "Administrative Rules
of Practice and Procedure for the Department of Environmental Management
Administrative Adjudication Division for Environmental Matters".
B.
Within thirty (30) days of the receipt of a decision from the Department regarding
an application for repair of a dam or hazard classification of a dam, the owner
may request an adjudicatory hearing to appeal the decision, or portions thereof.
The request for an adjudicatory hearing must be in writing, must comply in form
and content for such requests as required by the “Administrative Rules of
Practice and Procedure for the Administrative Adjudication Division for
Environmental Matters”, and must be filed directly with the Administrative
Adjudication Division (AAD) of the Department. A copy of such request must
also be forwarded to the Dam Safety Program. A request for an adjudicatory
hearing automatically stays any contested approval issued for repair of a dam. It
shall be the dam owner’s burden to demonstrate by a preponderance of the
evidence that the application as proposed or hazard classification is consistent
with the purposes of the law, complies with these rules and regulations and
protects the public, real property and natural resources.
C.
Any person who has received a Notice of Violation (NOV) alleging violation of
these rules and regulations, or whose approval has been suspended or revoked,
may appeal to the Director for review of the decision on which the NOV,
suspension or revocation is based by filing an appeal with AAD.
1.
Filing of Appeal - All appeals shall be in writing and shall be filed with and
received by AAD within twenty (20) days after the date of receipt of the
subject NOV, or within thirty (30) days after receipt of the revocation or
suspension.
2.
Contents of Appeal - Every appeal shall contain a detailed basis upon
which the appeal is taken.
1.16 Severability
If any provision of these rules and regulations, or the application thereof to any person
or circumstances, is held invalid by a court of competent jurisdiction, the validity of the
remainder of the rules and regulations shall not be affected thereby.
1.17 Superseded Rules and Regulations
On the effective date of these rules and regulations, all previous Rules and Regulations
for Dam Safety filed with the Secretary of State on December 20, 2007 shall be
superseded. However, any enforcement action taken by, or application submitted to,
the Department prior to the effective date of these rules and regulations shall be
governed by the rules and regulations in effect at the time the enforcement action was
taken, or application filed.
1.18 Appendix I: Impact Avoidance and Minimization
Rhode Island’s Freshwater Wetlands Act (R.I. Gen. Laws § 2-1-18, et seq.) and Water
Pollution Act (R.I. Gen. Laws § 46-12-1, et seq.) require the Director to protect
freshwater wetland values and water quality, respectively. It is important for the dam
owner to recognize the Director’s responsibilities under these laws and to plan his/her
repair projects to minimize any negative impacts to freshwater wetlands and water
quality values. In particular, the dam owner must:
A.
Minimize the impacts from lowering the water elevation in a reservoir during a
repair project, such as by installing a temporary cofferdam. This is necessary to
reduce detrimental impacts to fish and wildlife associated with the wetland
environment and to reduce loss of aquatic vegetation that serves as wildlife
habitat. In the event that a dam owner is unable to install controls to maintain
water in the reservoir to assist in protecting fish and wildlife habitat, the dam
owner must specifically inform the Director of this situation and document in
writing why water is not proposed to be maintained upstream of the dam during
the repair activity. Efforts must be made to avoid drawdowns between April 15 to
July 1, and to avoid significant drawdowns between October 15 and March 15.
B.
Use best management practices regarding the installation of sediment and
erosion controls to prevent sediment from entering adjacent waters of the state.
C.
Minimize construction disturbance so as to keep disturbed soils and areas
subject to erosion to a minimum.
D.
Prevent any hazardous substances injurious to aquatic life used during the repair
activity from entering any adjacent water and freshwater wetlands.
E.
Stabilize all disturbed soils following construction activities to ensure erosion will
not take place.
F.
Minimize clearing of vegetation to that necessary to conduct the project and
remove the slash material from adjacent freshwater wetlands and water bodies.
G.
Use only the amount of fill of other material necessary to complete the project
and minimize the placement of material in any flood plain.
H.
Replace, restore or mitigate alterations to freshwater wetlands as deemed
necessary in the opinion of the Department.