250-RICR-150-10-3
250-RICR-150-10-3. Rules and Regulations for Sewage Sludge Management (version Technical Revision, 01/04/2012 to 01/04/2022)
3.1 Purpose
The purpose of these rules
and regulations is to ensure that sewage sludge that is treated, land
applied, disposed, distributed, stockpiled or transported in the
State of Rhode Island is done so in a manner to protect public health
and to avoid degradation of the environment. To achieve this purpose,
these rules and regulations establish procedures governing the
management of sludge.
3.2 Authority
These rules and regulations
are promulgated pursuant to the requirements and provisions of R.I.
Gen. Laws Chapter 42-17.1, "Department of Environmental
Management", Chapter 42-17.6, "Administrative Penalties for
Environmental Violations", Chapter 46-12, "Water
Pollution", Chapter 23-18.9, "Refuse Disposal",
Chapter 23-19.1, "Hazardous Waste Management", and Chapter
42-35, "Administrative Procedures Act".
3.3 Applicability
A. These rules and regulations
apply to all sludge generated by publicly owned treatment works or
privately owned treatment works that is managed in the State of Rhode
Island. All sludge generated by publicly owned treatment works or
privately owned treatment works that enters the State of Rhode Island
for the purpose of transportation only, shall also be subject to the
transportation requirements of these rules and regulations.
B. In addition to compliance
with these rules and regulations, certain proposed facilities or
sites may require compliance with legal requirements imposed by the
federal government, other state agencies or offices within the
Department and/or local governmental entities (governmental
requirements). These rules and regulations are intended to be and
should be interpreted to be consistent and/or complementary with said
governmental requirements and any perceived conflicts are
unintentional. Should a perceived conflict arise between or among
these rules and regulations and the governmental requirements imposed
by other departmental regulations or other governmental entities, the
most stringent requirement shall govern.
C. Byproducts or wastes from
commercial or industrial treatment works that do not contain sewage
sludge are not subject to these rules and regulations but may be
subject to other applicable State and Federal regulations for solid
waste or hazardous waste. Byproducts or wastes from commercial or
industrial treatment works that contain sewage sludge may also be
subject to applicable State and Federal regulations for solid waste
or hazardous waste.
3.4 Liberal
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.
3.5 Definitions
A. For the purposes of these
rules and regulations, the following terms shall have the following
meanings:
1. "Abutter" means
any person who owns property adjacent to, or across a road, railroad,
or stream from a proposed facility or site.
2. "Agricultural lands"
means those lands utilized for or having the potential for the
production of food crops, feed crops or fiber crops.
3. "Agronomic rate"
means the sludge application rate that is designed to provide the
amount of nitrogen or other nutrient(s) needed by the crop or
vegetation and minimize the amount of nitrogen that passes below the
root zone of the crop or the vegetation to the groundwater.
4. "Aquifer" means a
geologic formation, group of formations, or part of a formation
capable of yielding a significant amount of groundwater to wells and
springs.
5. "Applicant" means
a person who applies for an Order of Approval or the Director's
approval pursuant to these rules and regulations.
6. "Beneficial use"
means taking advantage of the nutrient content and/or soil
conditioning properties of sludge by supplying agronomic or soil
conditioning benefits such as nitrogen, phosphorus, micronutrients,
or organic matter needs for crops, silviculture or establishing a
vegetative cover for reclamation sites.
7. "Bulk distribution"
means the distribution of Class A Biosolids in a container greater
than 100 pounds.
8. "Bulking agent"
means material such as sawdust, woodchips or yard trimmings which is
added to the sludge to provide structure, lower total moisture
content, allow air to reach and be held in small pockets by
preventing settling and compaction of the sludge, and in some cases
to act as a carbon source for composting operations.
9. "Class A biosolids"
means any treated sludge that meets the metals and pathogen limits
established in § 3.32 of this Part.
10. "Class B biosolids"
means any treated sludge that does not meet the metals limits
established in § 3.32 of this Part but meets the metals limits
established in § 3.33 of this Part.
11. "Class C biosolids"
means any treated sludge that does not meet the metals limits
established in § 3.33 of this Part.
12. "Closure" means
the procedures used to cease the use of a facility, or a portion
thereof, in a manner that will minimize future risks of environmental
damage, and includes all post-closure inspection, monitoring, and
maintenance activities.
13. "Composting"
means the biological method of stabilizing organic residues through
an aerobic, self-heating process.
14. "Cover" means
soil or other approved material placed over sewage sludge in a land
disposal site or sewage sludge or solid waste in a solid waste
landfill.
15. "Department"
means the Rhode Island Department of Environmental Management.
16. "Director" means
the Director of the Department of Environmental Management or any
designee to whom the Director delegates any powers and duties vested
in that office.
17. "Disposal" means
the final discharge, deposit, injection, dumping, mixing, spilling,
leaking, incinerating, or placing of sludge into or onto any land so
that such sludge or any constituent thereof may enter the
environment, be emitted into the air or be discharged into any
surface water or groundwater.
18. "Distributor"
means any person who distributes or markets Class A Biosolids. Any
person that receives and distributes or markets packaged Class A
Biosolids exclusively is not considered a distributor.
19. "Facility" means
any building, structure and operation, including land or
appurtenances thereto, on one contiguous site used for the
generation, processing or management of sludge. A facility includes,
but is not limited to a publicly or privately owned treatment works,
sludge treatment facility, sludge-only landfill (or monofill), sludge
incinerator and site where sludge is treated, stockpiled or mixed
with other sludge or other material for shipment off-site.
20. "Feed crops"
means crops grown for consumption by animals.
21. "Fiber crops"
means crops, such as flax or cotton that are cultivated for their
fiber content and are not consumed by humans or by animals intended
for human consumption.
22. "Flood plain"
means that land area adjacent to a river which is, on the average,
likely to be covered with flood water resulting from a 100 year
frequency storm, and shall be that land so designated as flood plain
on the U.S. Department of Housing and Urban Development Federal
Insurance Administration Flood Hazard Boundary Map, currently
administered by FEMA.
23. "Food crops"
means crops, including tobacco, consumed by humans.
24. "Generator"
means the person who holds title to a publicly owned treatment works
or privately owned treatment works located in Rhode Island that
produces sewage sludge or the facility or site located in Rhode
Island where sludge is mixed or treated to produce another material.
25. "Groundwater"
means water found underground which completely fills the open spaces
between particles of soil and spaces within rock formations.
26. "Hazardous waste"
means any waste as defined in accordance with R.I. Gen. Laws Chapters
23-19.1 and 23-19.4, and regulations adopted pursuant thereto.
27. "Incorporated into
the soil" means the injection of liquid sludge beneath the
surface of the soil or the mixing of sludge with the surface soil for
beneficial use.
28. "Land application"
or "land-applied" means the spraying or spreading of sludge
onto the land surface; the injection of sludge below the land
surface; or the incorporation of sludge into the soil so that the
sludge can either condition the soil or fertilize crops or vegetation
grown in the soil.
29. "Land disposal"
or "land-disposed" means the burial of sludge in a
sludge-only landfill (or monofill). Burial of sludge in a solid waste
landfill is not considered land disposal.
30. "Lead free"
means any sludge having no lead present or having lead present in
amounts less than the standards established in the Rhode Island
Department of Health "Rules and Regulations for Lead Poisoning
Prevention".
31. "Lead safe"
means any sludge, which pursuant to the Rhode Island Department of
Health "Rules and Regulations for Lead Poisoning Prevention,"
poses no significant environmental lead exposure hazard despite
having a lead concentration above that required for a designation as
"lead free" (see § 3.5(A)(30) of this Part above).
32. "Management" or
"manage" means the supervising, controlling, or undertaking
of any sludge activity(ies) regulated under these rules and
regulations including transporting, processing, land applying,
disposing, stockpiling, treating or distributing of sludge.
33. "Monitoring well"
means a cased and screened well that intercepts the groundwater and
can be used to detect the presence of groundwater contamination. All
monitoring wells are to be designed based on criteria established by
the Department.
34. "Office of water
resources" means the Office of Water Resources of the Department
of Environmental Management.
35. "Operator" means
the person in control of or having responsibility for managing the
sludge activity(ies) at a facility, site or publicly or privately
owned wastewater treatment facility.
36. "Order of approval"
means a written document issued by the department, which authorizes
the holder to manage a site or facility or transport sludge according
to the terms of the document.
37. "Owner" means
the person named on the Federal National Pollutant Discharge
Elimination System (NPDES) or the Rhode Island Pollutant Discharge
Elimination System (RIPDES) permit issued for a facility or the
applicant named on the Order of Approval or the person holding title
to a facility or site where sludge is generated and/or managed or is
proposed to be generated and/or managed.
38. "Pathogen" means
disease-causing organisms including, but not limited to, certain
bacteria, protozoa, viruses, and viable helminth ova.
39. "Person" means
an individual, trust, firm, joint stock company, corporation
(including a quasi-governmental corporation), partnership,
association, syndicate, municipality, municipal or state agency, fire
district, club, non-profit agency or any subdivision, commission,
department, bureau, agency or department of state or federal
government (including any quasi-governmental corporation) or of any
interstate body.
40. "pH" means the
logarithm of the reciprocal of the hydrogen ion concentration (base
10).
41. "Pollutant"
means any dredged material, solid waste, incinerator residue, sewage,
garbage, sewage sludge, sediment, filter backwash, munitions,
chemical wastes, biological materials, radioactive materials, heat,
wrecked or discarded equipment, rock, sand, cellar dirt, industrial
or municipal or agricultural waste or effluent, petroleum or
petroleum products, including but not limited to oil; or any material
which will likely alter the physical, chemical, biological or
radiological characteristics and/or integrity of water.
42. "Private drinking
water supply well" means any well established for the purpose of
meeting all or part of a person's potable water needs provided said
well does not supply a public drinking water supply.
43. "Privately owned
treatment works" means any facility which is owned by a private
individual or private party or corporation or other private entity
and is used for the treatment of pollutants. This definition includes
sewers, pipes if they convey wastewater to a privately owned
treatment works as well as any equipment, buildings or machinery used
in the treatment operation.
44. "Processing"
means any activity that reduces the quantity of sludge or alters its
chemical, biological, or physical state.
45. "Processes to
significantly reduce pathogens" or "PSRPs" and
"processes to further reduce pathogens" or "PFRPs"
means the processes listed in §§ 3.28 and 3.29 of this Part,
respectively, which will reduce pathogens in sludge.
46. "Public drinking
water supply well" means any well supplying a water system with
piped water for human consumption, provided that such a system has at
least 15 service connections or regularly serves an average of at
least 25 individuals daily at least 60 days of the year.
47. "Publicly owned
treatment works" means any facility which is used for the
treatment of pollutants and is owned by the state or any political
subdivision thereof, municipality, or other public entity, including
any quasi-governmental corporation. This definition includes sewers,
pipes if they convey wastewater to a publicly owned treatment works
and any equipment, buildings or machinery used in the treatment
operation.
48. "Reclamation"
means the addition of organic matter and nutrients to improve and/or
promote establishment of vegetation on soils which have been severely
disturbed or which are in a poor vegetative state.
49. "Septage" means
either liquid or solid material removed from a septic tank, cesspool,
portable toilet, marine sanitation device, or similar treatment works
that receives only domestic sewage.
50. "Sewage" or
"wastewater" means human waste, or wastes from toilets and
other receptacles intended to receive or retain body waste, and any
wastes, including wastes from human households, commercial
establishments, and industries.
51. "Silviculture"
means the growing or cultivation of forests.
52. "Site" means
contiguous land areas owned by the same person(s) on which sludge is
managed even if the land area is divided by a highway, railroad,
water body, or boundary of a political subdivision.
53. "Sludge" or
"sewage sludge" means residue, partially solid, or solid,
treated or untreated, resulting from the treatment of sewage,
including such residues from the cleaning of sewers, by processes,
such as settling, flotation, filtration and centrifugation, that does
not meet the criteria for a hazardous waste. Domestic septage is not
considered sludge.
54. "Solid waste
regulations" means the "Rules and Regulations for Solid
Waste Management Facilities", Rhode Island Department of
Environmental Management, Subchapter 05 Part 1 of this Chapter.
55. "Stockpiling"
means the storage of sludge.
56. "Surface water"
means any waters of the State that are not groundwaters.
57. "Toxicity
characteristic leachate procedure" or "TCLP" means a
quantitative analysis to determine hazardous characteristics as
described in 40 C.F.R. § 261, Appendix II.
58. "Transporter"
means any person engaged in the removal or transporting of sludge.
59. "Treated sludge"
means sewage sludge that is treated by one or more of the methods
listed in § 3.29 of this Part.
60. "Vector" means a
carrier that is capable of transmitting a pathogen from one organism
to another, including but not limited to flies and other insects,
rodents, birds and other vermin.
61. "Waters of the state"
or "the waters" means all surface water and groundwater of
the State of Rhode Island, including all tidewaters, territorial
seas, wetlands, land masses partially or wholly submerged in water,
and both inter- and intra-state bodies of water which are, have been
or will be used in commerce, by industry, for the harvesting of fish
and shellfish or for recreational purposes.
62. "Well" means a
bored, drilled or driven shaft or a dug hole, with a depth greater
than its largest surface dimension, through which groundwater flows
under natural or induced pressure.
63. "Wellhead protection
area" means that portion of the ground surface and subsurface
area surrounding a public well or wellfield through which water will
move toward and reach such well or wellfield as designated by the
Director in accordance with the Rhode Island Wellhead Protection
Program.
64. "Wetlands" means
those areas that are inundated or saturated by surface or groundwater
at a frequency and duration sufficient to support, and that under
normal circumstances do support, a prevalence of vegetation typically
adapted for life in saturated soil conditions. Wetlands generally
include swamps, marshes, bogs and similar areas. For freshwaters,
wetlands are determined by the Office of Water Resources using the
Rules and Regulations Governing the Enforcement and Administration of
the Freshwater Wetlands Act, Subchapter 15 Part 1 of this Chapter.
Coastal wetlands are determined by rules and regulations under the
jurisdiction of the Coastal Resources Management Council.
3.6 Sludge
Management Operations
A. The owner or operator of a
facility or site is required to operate and maintain properly all
equipment and systems used to achieve compliance with these rules and
regulations. Proper operation and maintenance includes effective
performance, adequate funding, adequate staffing and training, and
adequate laboratory and process controls, including appropriate
quality assurance procedures.
B. Upon any interruption in
operations of the facility or site due to loss or reduction of power
or other equipment failure, the owner or operator shall control
management of the facility or site to the extent necessary to
maintain compliance with these rules and regulations until such time
as power or other equipment is restored or an alternative method of
management is provided.
C. The owner or operator shall
take immediate action necessary to correct any noncompliance with
these rules and regulations when such noncompliance may have an
adverse effect on public health or the environment.
D. The owner or operator shall
notify the Office of Water Resources in writing, at least ninety (90)
days prior to any alteration or modification of the facility or site,
change in management practices of the facility or site, or any other
activity which may result in noncompliance with these rules and
regulations.
E. The owner or operator shall
immediately notify the Office of Water Resources of any substantial
change in the volume or composition of sludge resulting from the
introduction of pollutants into the facility or site. The notice
shall include information on the quantity and composition of sludge,
the source of the new pollutants or efforts made to discover the
source, and any impacts on management practices resulting from the
change.
3.7 Requirements
for Order of Approval
A. The owner or operator of a
facility or site must obtain an Order of Approval. The owner or
operator of the facility or site must operate at all times in
accordance with the Order of Approval, the completed Application for
Order of Approval and the Management Plan for the facility or site.
B. Except as provided in §
3.7(C) of this Part below, an Order of Approval shall be required
for:
1. The processing, treatment,
transporting, land application, land disposal, co-disposal (of sludge
and solid waste), incineration and/or distribution of sludge;
2. All sludge mixing
facilities and sites where the resultant sludge is to be used on site
or off site;
3. All sludge stockpiling
facilities and sites; and,
4. The closure of a land
disposal facility or site.
C. Unless the Director
determines that an Order of Approval is necessary for a specific
facility or site to protect public health and to avoid degradation of
the environment, an Order of Approval shall not be required for:
1. The transportation of Class
A Biosolids;
2. The interstate
transportation of sludge that is not generated, processed,
transferred, stored, used or disposed of in the State of Rhode
Island;
3. Any site upon which Class A
Biosolids is land applied for beneficial use which meets the
following conditions:
a. The Class A Biosolids is
generated by a facility that holds a valid Order of Approval from the
Department to generate Class A Biosolids;
b. The owner of the site or
the person land applying the Class A Biosolids is not the owner of
the facility or site where the Class A Biosolids is generated;
c. The Class A Biosolids is
stored at the land application site no longer than six (6) months
prior to land application;
d. The quantity of Class A
Biosolids stored at the land application site is consistent with the
appropriate application rate and size of the land application area;
e. The stockpile area and land
application area is not located within fifty (50) feet of any surface
water;
f. Adequate erosion control is
used to prevent material from entering any waters of the state;
g. The site complies with Part
120-05-17 of this Title;
h. The person land applying
the Class A Biosolids at the site possesses and follows a
Department-approved User’s Guide provided by the facility that
generates the Class A Biosolids; and
i. Land application does not
take place during the period starting on the first day of November
and ending the last day of February.
4. Any Class A Biosolids
distribution facility and/or mixing facility or site, such as a
landscaping company or soil blending facility, or stockpile site
which meets the following conditions:
a. The Class A Biosolids is
generated by a facility that holds a valid Order of Approval from the
Department to generate Class A Biosolids;
b. The owner of the site is
not the owner of the facility or site where the Class A Biosolids is
generated;
c. The facility or site is not
located within 50 feet of a surface water body;
d. The amount of unmixed Class
A Biosolids stockpiled at the site does not exceed 500 cubic yards at
any one time (any mixed material that contains more than 40% Class A
Biosolids by volume shall be considered unmixed for the purposes of
this storage limit);
e. Other than the mixing of
Class A Biosolids with soil or appropriate soil amendment materials,
no further processing or treatment of the Class A Biosolids takes
place at the facility or site;
f. The Class A Biosolids or
mixed Class A Biosolids is intended for beneficial use;
g. If mixing takes place, the
mixing process does not degrade the quality of the Class A Biosolids;
h. The site has adequate
erosion control to prevent mixed or unmixed Class A Biosolids from
entering waters of the state;
i. The site complies with Part
120-05-17 of this Title; and,
j. The owner or operator of
the facility or site provides a department-approved User’s Guide or
information sheet to any person(s) that receives unmixed Class A
Biosolids from the facility or site pursuant to §§ 3.12(B)(2)(a)
through (b) of this Part.
D. An application for Order of
Approval must be submitted at least ninety (90) days prior to the
anticipated date of operation of any proposed facility or site. Said
application must be accompanied by the appropriate application fee
along with any plans, specifications and a Management Plan as
stipulated in these rules and regulations. Where the facility or site
is not owned by the applicant, certified copies of any lease or
contracted agreements or other documentation acceptable to the
Department providing the applicant with adequate authority to engage
in the proposed activity at the subject facility or site must also be
submitted. Where such information has been previously submitted to
the Director and approved and where the applicant proposes to
continue the previously approved means of sludge management or when
utilizing an approved site, the Director may waive the requirement
that additional plans, specifications and Management Plans accompany
the application.
E. A person may request
approval from the Director to conduct a one-time pilot project for
the beneficial use of no more than thirty (30) cubic yards of Class A
Biosolids in those instances where the distributor that is to provide
the Class A Biosolids does not hold an Order of Approval from the
department to generate or distribute Class A Biosolids. Such a
request must be submitted in writing and must include a description
of the source of the sludge, lab analysis demonstrating that the
sludge meets Class A Biosolids standards and a detailed description
of the nature of the pilot project. An application fee is not
required for such projects.
F. The Director may require
that the applicant provide notification of any Application for Order
of Approval to all potentially affected parties as determined by the
Director. At a minimum, the applicant may be required to notify all
abutters of the proposed facility or site. The Commissioner may
schedule a public hearing as required pursuant to R.I. Gen. Laws
Chapter 42-35 to solicit public comment prior to rendering a decision
on the application. The applicant shall be required to pay the
expenses for notice and hearing.
G. The owner or operator of an
approved facility or site who seeks to change the treatment,
disposal, distribution or land application methods, or who seeks to
add facilities or sites, must apply for a new Order of Approval for
such modifications at least ninety (90) days prior to the anticipated
modification.
H. The Department must issue
an Order of Approval on an application for a proposed facility or
site prior to implementation of the sludge treatment, stockpiling,
land application, disposal or distribution at the facility or site.
Said approval shall remain in full force and effect until terminated
by the Director.
I. In those instances where
sludge management at a facility or site is delegated by the owner to
another person, it shall remain the responsibility of the owner to
meet all requirements of these rules and regulations and to submit
the necessary documents for the Director to issue an Order of
Approval.
J. Approval of a facility or
site involves an initial evaluation of the plan in accordance with §
3.8 of this Part.
K. Upon receipt of an
application the Department shall review the application for
completeness. If the application is incomplete, the Department shall
list the information necessary to make the application complete and
shall specify a date for submitting the necessary information. Where
the Department has deemed an application to be deficient, the
processing of the application will be suspended and the applicant
given a deadline to correct said deficiencies to the satisfaction of
the Department. If the applicant fails or refuses to correct said
deficiencies within the time period specified or extension granted by
the Department, the application shall be denied.
L. After an application is
determined to be complete, the Department may request additional
information from an applicant but only when necessary to clarify,
modify, or supplement previously submitted material. Requests for
such additional information will not render an application
incomplete, but if the applicant fails or refuses to submit such
information, the application may be denied.
M. During the review of an
application, the Department shall determine whether a site visit(s)
and inspection are necessary in order to evaluate the application
completely and accurately. If the Department decides that a site
visit is necessary for any reason in conjunction with the processing
of an application, the applicant shall be notified and a site visit
shall be scheduled.
N. The department shall issue
an Order of Approval when and if it determines that all applicable
requirements of these rules and regulations have been met.
O. An owner of a facility or
site may apply to the Director for a transfer of the Order of
Approval to a new owner. The current owner must apply to the Director
in writing by certified mail of the proposed transfer at least ninety
(90) days prior to the proposed transfer date and must include the
following information:
1. Name and address of the
subject facility or site;
2. Name and address of new
owner(s) and operator(s);
3. Names and addresses of the
person(s) upon whom the Director may serve legal process;
4. A notarized statement
signed by a duly authorized officer or agent of the new owner stating
that he or she has read the original Application for Order of
Approval and believes that to the best of his or her knowledge there
has been no material change in the operations of the facility or site
since the Order of Approval was issued or describes the changes that
have occurred since the Order of Approval was issued; and,
5. A proposed transfer date on
which the new owner will assume the Order of Approval and all
accompanying responsibility.
P. The Director may approve a
change in the method of treatment, disposal, land application, or
transportation of sludge from a publicly owned treatment works or
privately owned treatment works for emergency situations without
requiring the owner or operator of the facility to first apply for an
Order of Approval. The owner or operator of the facility must submit
to the Director an Application for Order of Approval within fourteen
(14) days of receiving an emergency approval from the Director.
Q. The owner or operator of an
approved facility or site shall furnish to the Department within a
reasonable time, any information which the Department may request to
determine whether cause exists for modifying, suspending, or revoking
the facility or site’s Order of Approval. The owner or operator of
an approved facility or site shall also furnish to the Department
upon request, copies of records required by the Order of Approval.
R. The owner or operator of an
approved facility or site shall retain records of all information
required under the Order of Approval for a period of at least five
(5) years from the date that record was generated. This period may be
extended by request of the Department at any time.
3.8 Application
for Order of Approval
A. This rule outlines the
information that must be filed with the Department when applying for
an Order of Approval to manage sludge. This rule does not apply to an
applicant that proposes to only transport sludge (see § 3.14 of this
Part). A registered professional engineer or land surveyor must stamp
plans and submissions required below. The plans should be scaled to
fit on a standard 24 x 36 inch sheet wherever possible. Larger sheets
must be used when the minimum scale requirements do not permit the
use of 24 x 36 inch sheets. The Director may require additional
information if necessary to satisfy the requirements of these rules
and regulations.
B. Application Form. The
applicant shall provide information on the proposed sludge management
activity on an application form obtained from the department.
C. Initial Investigation
Plans. Copies of the latest U.S. Geological Topographic Map, Farm
Services Agency aerial maps and the United States Department of
Agriculture Soil Survey Map, with the facility or site outlined and
an indication of the required setbacks shall be submitted to the
Office of Water Resources prior to all other required information.
This will allow initial evaluation of the plan relating to wetlands,
aquifers, and soil type before large investigatory and developmental
expenditures are made. A report of the evaluation shall be made to
the applicant. The report shall list what submissions, from §§
3.8(D) through (I) of this Part below and from other rules in this
part specific to the proposed management activity, must be submitted
to the Office of Water Resources to obtain an Order of Approval.
D. Radius Plan. A radius plan
including all the information listed below shall be submitted. The
radius plan must be drawn at a minimum scale of one inch to two
hundred feet (1"=200') and include all areas within a one
quarter (1/4) mile radius from all property lines of the site. The
required information includes:
1. All buildings;
2. All water supplies (wells,
etc.);
3. All surface watercourses
and wetlands;
4. All roads;
5. All boring locations (where
applicable);
6. Legal boundaries of
facility or site;
7. North arrow;
8. Extent of one hundred (100)
year flood plain (where applicable), and,
9. Local zoning and permitting
requirements.
D. Soil Borings. Borings are
required for all proposed areas to be filled at a land disposal site
or developed as an uncovered sludge treatment facility or site. Soil
borings are not required for proposed land application sites. The
minimum number of borings required is listed below:
Proposed
No. of Acres
No.
of Borings
1
- 10
3
11
- 50
6
51
- 100
12
101
- 200
18
Over
200
24
plus 1 for every 10 acres over 200
E. Split spoon samples shall
be collected at a minimum of five (5) foot intervals. A soil
description shall be provided for each split spoon sample. All
borings should be driven to a minimum depth of twenty (20) feet below
the proposed bottom level of sludge or to refusal. The following
information contained on the boring logs should be submitted:
1. Depth of the maximum
elevation of the groundwater table (to be measured at a minimum of
twenty four (24) hours after the boring is taken);
2. A detailed soil profile
description to a depth of four (4) feet must be submitted for each
soil mapping unit on the site. The required information includes:
a. Color of each horizon;
b. Texture of each horizon;
c. Depth of each horizon;
d. Depth to mottles (if any);
e. Amount of coarse fragments
(if any);
f. Depth to bedrock (if
encountered);
g. Consistence or relative
density, and,
h. Slope.
3. Method of boring;
4. Blow counts, and,
5. Date boring was taken.
F. The boring should be
located to give the best indications of subsurface conditions for the
whole site that can be obtained considering the limited number of
borings required. The groundwater table elevation determination shall
be made when the water table is highest; this occurs usually during
the months of January through April. (Specific dates may be
determined on a yearly basis by the Director.) All boring holes must
be maintained for future water table elevation determinations. If the
Director feels it necessary, additional borings may be required.
G. Groundwater Survey. A
groundwater survey showing the maximum ground water elevations, the
direction of groundwater flow, and an estimation of the rate of flow
(including calculations) shall be submitted.
H. Site Delineation. The
following areas at the proposed site shall be marked with stakes at
the time of the engineering survey. The stakes must be a minimum of
two (2) feet high, clearly visible and maintained at all times. All
sites shall include the following delineations:
1. Areas enclosed by legal
boundaries; and,
2. Areas to be developed or
filled as indicated in the Operation and Maintenance Plan.
I. Management Plan. A
Management Plan shall be submitted detailing operating procedures for
the facility or site.
3.9 Land
Disposal
A. This rule applies to the
disposal of sludge by burial. All applications for land disposal
sites are to be in accordance with the design and operational
requirements for solid waste landfills as promulgated by the Office
of Waste Management, Rhode Island Department of Environmental
Management. (Sludge burial at a solid waste landfill is covered under
§ 3.16 of this Part). All land disposal sites must operate under an
Order of Approval and must meet the following requirements.
B. Condition of Sludge. Sludge
that is land disposed must be treated by one or more of the Processes
to Significantly Reduce Pathogens listed in § 3.28 of this Part.
Such treatment is the responsibility of the owner or operator of the
facility performing the Process to Significantly Reduce Pathogens.
Sludge that meets the hazardous waste criteria shall not be land
disposed.
C. Groundwater. A minimum of
five (5) feet of soil is required between the lowest level of
deposited sludge and the seasonal high groundwater table as
determined by a DEM-licensed Class IV soil evaluator in accordance
with the procedures described in Part 6 of this Subchapter. The
determination of the seasonal high groundwater table must be
witnessed by the Department. In addition, a minimum of five (5) feet
of soil is required between the highest level of bedrock and lowest
level of deposited sludge. If the owner or applicant seeks a variance
from the separation distances under § 3.22 of this Part, the
Director may require the installation of an impermeable liner system
and leachate collection and treatment system or other means to
prevent leachate from reaching the groundwater as a condition for the
granting of such variance.
D. Surface Water. No sludge
shall be land disposed within 200 feet of any body of surface water.
No sludge shall be land disposed within one thousand two hundred
(1200) feet from the center line of the following freshwater rivers:
Ashaway River, Beaver River, Blackstone River, Chepachet River, Clear
River, Falls River, Flat River, Hunt River, Moshassuck River, Moosup
River, Narrow River, Pawcatuck River, Pascoag River, Pawtuxet River,
and Wood River. No sludge shall be land disposed of in the watershed
of any surface water used as a public drinking water supply. The
Director may, if necessary, require continuous monitoring of any
surface watercourses in the vicinity of the proposed land disposal
site. Such monitoring shall be of a type and frequency determined by
the Director on a case by case basis and shall be the responsibility
of the owner or operator.
E. Drinking Water Wells. No
sludge shall be land disposed within one thousand (1,000) feet of any
private drinking water supply well or within the Wellhead Protection
Area for a public drinking water supply well. Land disposal of sludge
shall be in accordance with the "Rhode Island Groundwater
Protection Act of 1985", R.I. Gen. Laws Chapter 46-13.1 and any
rules and regulations promulgated thereunder.
F. Distance to Buildings. No
sludge shall be land disposed within six hundred (600) feet of any
domestic, commercial or industrial structure not associated with the
proposed land disposal site.
G. Distance to Property Lines.
No sludge shall be land disposed within two hundred (200) feet of a
property line.
H. Monitoring Wells. For the
purpose of monitoring groundwater conditions, the owner or operator
of a land disposal site shall install and maintain monitoring wells
of a number and type approved by the Director and at locations chosen
by the Director. The owner or operator of the site is responsible for
analysis of groundwaters in accordance with instructions of the
Director. The Director shall determine the testing and reporting
frequency.
I. Erosion Control. The owner
or operator shall make provisions to have the land disposal site,
including the fill surface, graded and provided with a drainage
system to minimize surface water runoff onto and into the fill, to
drain off rain water falling on the fill and to prevent the
collection of standing water.
J. Transportation. All
transportation of sludge shall comply with § 3.14 of this Part.
K. Cover Material. A soil
cover of at least six (6) inches shall be applied to all sludge
deposits daily to control disease vectors and nuisance conditions.
Final cover in terminating the use of a land disposal site shall be
two (2) feet in depth.
L. Odor Control. Any land
disposal site must comply with Part 120-05-17 of this Title, or other
rules and regulations pertaining to odors.
M. Analysis of Sludge. All
sludge intended for land disposal may be required to be tested using
the Toxicity Characteristic Leaching Procedure for the parameters
listed in § 3.31 of this Part and the results submitted to the
Office of Water Resources. The owner or operator of the facility is
responsible for all analyses. The Director shall determine the
testing and reporting frequency depending upon the amount of sludge
produced.
N. Submissions for Approval.
The following submissions are required as part of an Application for
Order of Approval for land disposal of sludge and must be stamped by
a registered professional engineer or land surveyor. These
submissions are in addition to the submission requirements listed in
§ 3.8 of this Part.
1. Site Plan. A site plan
shall be submitted for all areas within the land disposal site. The
site plan must be drawn to a minimum scale of one inch to one hundred
feet (1"=100'). The site plan must include the following
information:
a. Initial ground contours at
five foot intervals;
b. Final proposed contours at
five foot intervals;
c. Boring locations;
d. Proposed leachate
collection and treatment systems;
e. Proposed gas controls (if
any);
f. Buildings (if any);
g. Wells (if any);
h. Surface water courses (if
any);
i. Roads (if any);
j. Cross section lines (see §
3.9(N)(2) of this Part);
k. Groundwater monitoring
wells;
l. Legal boundaries of site;
m. Power lines, pipe lines,
rights of way and other utilities;
n. Proposed fences;
o. Weighing facilities (if
any);
p. North arrow;
q. Location of borrow areas
(if any), and,
r. Boundaries of areas to be
filled.
2. Cross Section. Typical
cross section plans of the land disposal site shall be submitted. A
minimum of two cross sections are required of right angled center
lines passing through the approximate middle of the land disposal
site. The cross section plans should be drawn using a minimum
horizontal scale of one inch to one hundred feet (1"=100'). All
required details should be drawn using equal vertical and horizontal
scales. The cross section plans must include the following
information:
a. Proposed lifts;
b. Virgin ground;
c. Maximum groundwater table;
d. Bedrock location;
e. Side slopes;
f. Details of surface drains
and ditches;
g. Final fill elevation and
grades;
h. Limits of excavations;
i. Final cover elevations;
j. Details on access road
construction;
k. Details of leachate
collection and treatment systems;
l. Details of gas venting
facilities (if any), and,
m. Details of groundwater
monitoring wells with soil profiles.
3. Management Plan. The
Management Plan shall include the following information:
a. Type of method to be used
(trench, area, etc.);
b. Provisions for appropriate
liners;
c. Proposed sequence of
operation;
d. Estimate of amount of cover
material available or to be purchased and from whom;
e. Operating hours;
f. Personnel and duties;
g. Projected use of completed
land disposal site;
h. Dust control program;
i. Vector control program;
j. Odor control program;
k. Procedures to control
erosion and sedimentation and to promote vegetative growth in
completed areas;
l. Equipment to be on site
during operating hours;
m. Substitute equipment
available;
n. Communications equipment
available;
o. Population and service
area;
p. Winter operations;
q. Provisions for limiting
access such as fencing, signs, etc.;
r. Weighing facilities (if
any);
s. Estimated life of land
disposal site;
t. Aesthetic considerations;
u. Leachate treatment
operations, and,
v. Surface drainage control
methods.
4. Closure Plan. A closure
plan for all areas within the land disposal site shall be submitted.
The closure plan must be drawn to a minimum scale of one inch to one
hundred feet (1" = 100'). The closure plan must include the
following information:
a. Date of proposed closure;
b. Methods of restricting
access and preventing additional disposal;
c. Methods of protecting
ground and surface water and controlling air emissions;
d. Date on which all land
disposal areas will be covered with two (2) feet of final cover;
e. Date of installation of
impermeable covering, if any, and planting with vegetation;
f. Final grades and method of
maintaining final grades and promoting surface runoff;
g. Fences and gates;
h. Location and description of
groundwater and surface water monitoring stations and provision that
such monitoring shall continue on a quarterly basis for up to five
(5) years after the site is closed, and
i. Legal boundaries.
5. In addition, the applicant
shall set aside a post-closure monitoring fund for a monitoring
period of up to thirty (30) years subsequent to the closure of the
land disposal site. The applicant shall establish a post-closure
monitoring and maintenance fund designated "in trust for the
post-closure monitoring and maintenance of the land disposal site."
A bank or other financial institution approved by the Director shall
act as trustee of the trust fund. The trust instrument shall provide
that the Director shall have the right to use such part of the fund
as is necessary to carry out the post-closure monitoring and
maintenance for the land disposal site in accordance with these rules
and regulations. The trust instrument shall also provide that the
Director shall determine whether post-closure expenditures are
reasonable and in accordance with the closure plan. The trustee shall
release these funds upon receipt of a written request from the
Director.
6. Analysis of Sludge. All
results of the sludge analysis required in § 3.9(M) of this Part
shall be submitted.
3.10 Land
Application
A. This rule applies to the
land application of sludge that has been treated by one or more of
the Processes to Significantly Reduce Pathogens listed in § 3.28 of
this Part. (This rule does not apply to land application of Class A
Biosolids or any sludge that has been treated by one of the Processes
to Further Reduce Pathogens.) All land application sites must operate
under an Order of Approval and must meet the following requirements:
B. Sludge and Soil Analysis.
All sludge intended for land application may be required to be tested
using the Toxicity Characteristic Leaching Procedure for the
parameters listed in § 3.31 of this Part and the results submitted
to the Office of Water Resources. Sludge intended for land
application must meet the limits established in § 3.33 of this Part
for metals and must be tested for the listed characteristics. In
addition, soil from the proposed land application site, with the
exception of silvicultural lands, must be tested for metals listed in
§ 3.33 of this Part and for the parameters listed in § 3.10(T)(3)
of this Part below. The Director shall determine the testing and
reporting frequency. All sludge analyses shall be the responsibility
of the owner or operator of the facility; all soil analyses shall be
the responsibility of the applicant.
C. Land Application Rates. All
sludge intended for land application must be applied at an annual
rate not to exceed the amount necessary to supply adequate available
nitrogen for crop production using good agricultural or silvicultural
practices or not to exceed the maximum annual rates recommended by
the U.S. Department of Agriculture to achieve fertilizer benefits and
soil improvement.
D. Cumulative Loading Rates.
The maximum amount of sludge that can be applied to a land
application site shall be calculated using the procedure established
in § 3.34 of this Part. The amount of metals in the soil shall be
deducted from each calculation.
E. Condition of Sludge. Sludge
intended for land application shall be treated by one of the
Processes to Significantly Reduce Pathogens listed in § 3.28 of this
Part and shall meet one of the Vector Attraction Reduction
Requirements listed in § 3.30 of this Part. Such treatment shall be
the responsibility of the owner or operator of the facility. Sludge
intended for land application shall not meet the criteria for
hazardous waste.
F. Crops. Food crops with
harvested parts that touch the sewage sludge/soil mixture and are
totally above the land surface shall not be harvested for fourteen
(14) months after application of sewage sludge. Food crops with
harvested parts below the surface of the land shall not be harvested
for twenty (20) months after application of sewage sludge when the
sewage sludge remains on the land surface for four (4) months or
longer prior to incorporation into the soil. Food chain crops with
harvested parts below the surface of the land shall not be harvested
for thirty eight (38) months after application of sewage sludge when
the sewage sludge remains on the land surface for less than four (4)
months prior to incorporation into the soil. Food crops with
harvested parts that do not touch the sewage sludge/soil mixture,
feed crops and fiber crops shall not be harvested for thirty (30)
days after application of sewage sludge.
G. Turf. Turf grown on land
where sewage sludge is applied shall not be harvested for one (1)
year after the last application of sewage sludge has occurred when
the harvested turf is placed on either land with a high potential for
public exposure or a lawn.
H. Public Access. Public
access to the land application site shall be prohibited by the owner
or operator until one (1) year has passed since the last application
of sewage sludge to land with a high potential for public exposure,
such as a park or ball field or thirty (30) days has passed since the
last application of sewage sludge to land with a low potential for
public exposure, such as private farmland.
I. Animal Grazing. Animals
whose products are consumed by humans shall not be allowed to graze
on land where sewage sludge is applied for thirty (30) days after the
last application of sewage sludge has occurred.
J. Frozen Ground. No sludge
shall be applied to frozen, flooded or snow-covered ground unless
appropriate erosion and runoff control measures are provided.
K. Odor Control. Any land
application project must comply with Part 120-05-17 of this Title, as
amended, or other rules and regulations pertaining to odors.
L. Groundwater. A minimum of
two (2) feet of soil is required between the lowest level of applied
sludge and the seasonal high groundwater table as determined by a
DEM-licensed Class IV soil evaluator in accordance with the
procedures described in Part 6 of this Subchapter. The determination
of the seasonal high groundwater table must be witnessed by the
Department. In addition, a minimum of three (3) feet of soil is
required between the highest level of bedrock and the lowest level of
applied sludge.
M. Surface Water. No sludge
shall be land applied within two hundred (200) feet of any body of
surface water. No sludge shall be applied to land within the
watershed of any surface water used as a public drinking water
supply. The Director may, if necessary, require continuous monitoring
of any surface watercourses in the vicinity of the proposed land
application site. Such monitoring shall be of a type and frequency
determined by the Director on a case by case basis and shall be the
responsibility of the owner or operator.
N. Drinking Water Wells. No
sludge shall be land applied within one thousand (1,000) feet of any
private drinking water supply well or within the Wellhead Protection
Area for a public drinking water supply well. Land application of
sludge shall be in accordance with the Rhode Island Groundwater
Protection Act of 1985, R.I. Gen. Laws Chapter 46-13.1 and any rules
and regulations promulgated thereunder.
O. Distance to Buildings. No
sludge shall be land applied within four hundred (400) feet of any
domestic, commercial or industrial structure not associated with the
proposed land application project.
P. Distance from Property
Lines. No sludge shall be land applied within one hundred (100) feet
of a property line. This requirement will be met if consent from the
adjacent landowner is received.
Q. Monitoring Wells.
Groundwater monitoring shall be of a type and frequency determined by
the Director on a case by case basis and shall be the responsibility
of the owner or operator.
R. Erosion Control. Soil
erosion on all land application sites shall be limited to conditions
which meet Resource Management System Quality Criteria for soil
erosion as defined in the USDA Natural Resources Conservation Service
(NRCS) Field Office Technical Guide for Rhode Island. Erosion control
methods on all land application sites shall be consistent with
practice standards and specifications in the NRCS Field Office
Technical Guide for Rhode Island. Sediment and runoff shall be
controlled on all land application sites consistent with the measures
within the Rhode Island Soil Erosion and Sediment Control Handbook,
RI Department of Environmental Management, USDA Soil Conservation
Service and Rhode Island State Conservation Committee, 1989.
S. Transportation. All
transportation of sludge shall comply with § 3.14 of this Part.
T. Submissions for Approval.
The following submissions are required as part of an Application for
Order of Approval for land application of sludge and must be stamped
by a registered professional engineer or land surveyor. These
submissions are in addition to the submission requirements listed in
§ 3.8 of this Part.
1. Site Plan. A site plan for
all areas within the land application site shall be submitted. The
site plan must be drawn to a minimum scale of one inch to one hundred
feet (1"=100'). The site plan must include the following
information:
a. Detailed soil map;
b. Buildings (if any);
c. Wells (if any);
d. Surface watercourses (if
any);
e. Roads (if any);
f. Groundwater monitoring
wells;
g. Proposed erosion control
and runoff collection and treatment systems (if any);
h. Legal boundaries of site;
i. Power lines, pipe lines,
rights of way and other utilities, and,
j. North arrow.
2. Soil Description. A
detailed soil profile description to a depth of four (4) feet must be
submitted for each soil-mapping unit on the land application site.
The required information includes:
a. Color of each horizon;
b. Texture of each horizon;
c. Depth of each horizon;
d. Depth to mottles (if any);
e. Amount of coarse fragments
(if any);
f. Depth to bedrock (if
encountered);
g. Consistence or relative
density, and,
h. Slope.
3. Laboratory Data.
Representative samples shall be taken from the plow layer within the
proposed land application site. The following data shall be submitted
for each sample:
a. Soil density;
b. Depth of sample, and,
c. Moisture content (%).
4. Management Plan. The
Management Plan shall include the following information:
a. Type of land application
method to be used;
b. Detailed description of the
land application project and the proposed sequence of operation;
c. Provisions for compliance
with § 3.10(B) through (S) of this Part;
d. Personnel and duties;
e. Projected use of the land
application site;
f. Procedures to control dust,
vectors and odor;
g. Procedures to control
erosion, sedimentation and promote vegetative growth;
h. Equipment to be utilized
and substitute equipment to be on site;
i. Provisions to control
access;
j. Estimated life of land
application site, and,
k. Aesthetic considerations.
5. Sludge and Soil Analysis.
The results of the sludge and soil analysis required in § 3.10(B) of
this Part shall be submitted.
3.11 Treatment
of Sludge
A. This rule applies to the
treatment of sludge by one of the Processes to Further Reduce
Pathogens listed in § 3.29 of this Part. All sludge treatment
facilities must operate under an Order of Approval and must meet the
following requirements:
B. Sludge Treatment Method.
All methods of sludge treatment must meet one of the Processes to
Further Reduce Pathogens listed in § 3.29 of this Part and must meet
one of the Vector Attraction Reduction Requirements listed in § 3.30
of this Part.
C. Sludge Composting Methods.
When sludge is treated by composting as provided in § 3.29(A) of
this Part, one of the following composting methods shall be used:
1. Aerated Static Pile. Sludge
must be maintained at operating conditions of 55°C or greater for
three (3) consecutive days. The sludge must remain in the active
phase for a minimum of twenty one (21) days in a pile not to exceed
twelve (12) feet in height. At the end of the active phase, the
material must be cured for a minimum of thirty (30) days in a
stockpile not to exceed twelve (12) feet in height unless the
Department determines that such curing is not necessary. Such
composting operations shall be provided with an appropriate leachate
collection system, shall be built on an impervious surface and shall
be protected from direct rainfall by a roof to reduce the amount of
leachate and runoff.
2. Windrow. Sludge must be
maintained at operating conditions of 55°C or greater for at least
fifteen (15) consecutive days during the active phase. The sludge
must remain in the active phase for a minimum of twenty one (21) days
in a pile, with the sludge being turned at least once every three (3)
days. Height of the pile shall be compatible with the equipment used
for turning the sludge. The active phase shall be followed by a
curing period of at least thirty (30) days in a curing pile not to
exceed twelve (12) feet in height unless the Department determines
that such curing is not necessary. Such composting operations shall
be provided with an appropriate leachate collection system, shall be
built on an impervious surface and shall be protected from direct
rainfall by a roof to reduce the amount of leachate and runoff.
3. In-Vessel. Sludge must be
maintained at operating conditions of 55°C or greater for three (3)
consecutive days. The sludge must remain in the active phase for a
minimum of fourteen (14) days. The active and curing phases are to be
maintained for a total minimum period of thirty (30) days. If sludge
is cured in a curing pile, the pile is not to exceed twelve (12) feet
in height.
D. Groundwater. A minimum of
two (2) feet of soil is required between the proposed sludge
treatment surface and the seasonal high groundwater table as
determined by a DEM-licensed Class IV soil evaluator in accordance
with the procedures described in Part 6 of this Subchapter. The
determination of the seasonal high groundwater table must be
witnessed by the Department. In addition, a minimum of three (3) feet
of soil is required between the highest level of bedrock and the
sludge treatment surface. If the applicant seeks a variance from
these separation distances under § 3.22 of this Part, the applicant
must demonstrate to the satisfaction of the Office of Water Resources
that the sludge treatment facility or site will not generate
leachate. Otherwise, the Director will require the installation of an
impermeable liner system and leachate collection and treatment system
or other means to prevent leachate from reaching the groundwater as a
condition for the granting of such variance.
E. Surface Water. No sludge
shall be treated within two hundred (200) feet of any body of surface
water. No sludge shall be treated within the watershed of any surface
water used as a public drinking water supply. The Director may, if
necessary, require continuous monitoring of any surface watercourses
in the vicinity of the sludge treatment facility or site. Such
monitoring shall be of a type and frequency determined by the
Director on a case by case basis and shall be the responsibility of
the owner or operator of the facility or site. If the applicant seeks
a variance from these separation distances under § 3.22 of this
Part, the applicant must demonstrate to the satisfaction of the
Department that any runoff from the sludge treatment facility or site
will not impact surface water as a condition for the granting of such
variance.
F. Drinking Water Wells. No
sludge shall be treated within one thousand (1,000) feet of any
private drinking water supply well or within the Wellhead Protection
Area for a public drinking water supply well. Any sludge treatment
facility or site shall comply with the Rhode Island Groundwater
Protection Act of 1985, R.I. Gen. Laws Chapter 46-13.1 and any rules
and regulations promulgated thereunder. If the applicant seeks a
variance from these separation distances under § 3.22 of this Part,
the applicant must demonstrate to the satisfaction of the Department
that the sludge treatment facility or site will not generate leachate
as a condition for the granting of such variance.
G. Distance to Property Lines.
No sludge shall be composted within four hundred (400) feet of a
property line. If the applicant seeks a variance from this separation
distance under § 3.22 of this Part, the Director will require that
the facility be completely enclosed as a condition for the granting
of such variance.
H. Monitoring Wells. For the
purpose of monitoring groundwater conditions, the owner or operator
of a sludge treatment site shall install and maintain monitoring
wells of a number and type approved by the Director and at locations
chosen by the Director. The owner or operator of the site is
responsible for analysis of groundwater in accordance with
instructions of the Director. The Director shall determine the
testing and reporting frequency. If the applicant seeks a variance
from this requirement, the applicant must demonstrate to the
satisfaction of the Department that the sludge treatment operation
will not generate leachate.
I. Transportation. All
transportation of sludge shall comply with § 3.14 of this Part.
J. Stockpiling. All
stockpiling of sludge and treated sludge shall comply with § 3.13 of
this Part.
K. Sludge and Bulking Agent
Analysis. All sludge intended for treatment may be required to be
tested using the Toxicity Characteristic Leaching Procedure for the
parameters listed in § 3.31 of this Part and the results submitted
to the Office of Water Resources. The Director shall determine the
testing and reporting frequency. For composting facilities, any
bulking agents utilized in the operation may also be required to be
tested. Sludge analyses shall be the responsibility of the owner or
operator of the facility that generates the sludge; bulking agent
analyses shall be the responsibility of the owner or operator of the
sludge composting facility.
L. Condition of Sludge and
Bulking Agents. All sludge intended for treatment and all bulking
agents shall not meet the criteria for hazardous waste.
M. Odors. Any sludge treatment
facility must comply with Part 120-05-17 of this Title, and any other
rules and regulations pertaining to odors.
N. Treated Sludge Quality. Any
treated sludge that meets all the limits established in § 3.32 of
this Part shall be considered Class A Biosolids; the requirements and
restrictions for the distribution and use of Class A Biosolids are
listed in § 3.12(B) and (C) of this Part. Any treated sludge that
does not meet the metals limits established in § 3.32 of this Part
but meets the metals limits established in § 3.33 of this Part shall
be considered Class B Biosolids; the requirements and restrictions
for the use of Class B Biosolids are listed in § 3.12(D) of this
Part. Any treated sludge that does not meet the metals limits
established in § 3.33 of this Part shall be considered Class C
Biosolids; the requirements and restrictions for the use and disposal
of Class C Biosolids are listed in § 3.12(E) of this Part.
O. Treated Sludge Analysis.
Class A Biosolids must be tested for the metals and the pathogens
listed in § 3.32 of this Part. Class B Biosolids and Class C
Biosolids must be tested for the metals and the characteristics
listed in § 3.33 of this Part. All results must be submitted to the
Office of Water Resources. The Director shall determine the testing
and reporting frequency. All treated sludge analysis shall be the
responsibility of the owner or operator of the sludge treatment
facility.
P. Submissions for Approval.
The following submissions are required as part of an Application for
Order of Approval for a sludge treatment facility or site and must be
stamped by a registered professional engineer or land surveyor. These
submissions are in addition to the submission requirements listed in
§ 3.8 of this Part.
1. Site Plan. A site plan
including all of the information listed below for all areas within
the sludge treatment site shall be submitted. The site plan must be
drawn to a minimum scale of one inch to one hundred feet (1"=100').
The required information includes:
a. Initial ground contours at
five foot intervals;
b. Final proposed contours at
five foot intervals;
c. Boring locations;
d. Proposed leachate
collection and treatment systems;
e. Proposed gas controls (if
any);
f. Buildings (where
applicable);
g. Wells (if any);
h. Surface watercourses and
other wetlands;
I. Roads;
j. Groundwater monitoring
wells;
k. Legal boundaries of site;
l. Power lines, pipelines,
rights of way and other utilities;
m. Proposed fences;
n. Weighing facilities (if
any), and,
o. North arrow.
2. Management Plan. The
Management Plan shall include the following information:
a. Detailed description of the
sludge treatment method to be used and the proposed sequence of
operation;
b. Use of bulking agent and
procedures for temperature control (if any);
c. Operating hours;
d. Personnel and duties;
e. Procedures to control dust,
vectors and odors;
f. Provisions for the
immediate treatment of all sludge;
g. Provisions for the proper
storage of treated sludge;
h. Procedures to control
erosion and sedimentation;
I. Equipment to be on site
during operating hours;
j. Substitute equipment
available;
k. Communications equipment
available;
l. Population and service
area;
m. Winter operations;
n. Provisions for limiting
access;
o. Provisions for land
application and/or disposal of treated sludge;
p. Weighing facilities (if
any);
q. Estimated life of the
sludge treatment facility;
r. Aesthetic considerations;
s. Leachate treatment
operations, and,
t. Surface drainage control
measures.
3. Sludge and Bulking Agent
Analysis. The results of the sludge and bulking agent analysis
required in § 3.11(K) of this Part shall be submitted.
3.12 Distribution
and Land Application of Treated Sludge
A. This rule applies to the
distribution and land application of treated sludge.
B. Distribution of Class A
Biosolids. This subrule applies to the distribution of Class A
Biosolids. Except as provided in § 3.7(C)(4) of this Part, all
distribution facilities or sites must operate under an Order of
Approval and must meet the following requirements.
1. Packaged Distribution of
Class A Biosolids. Packaged distribution shall mean Class A Biosolids
that are sold or given away in a bag or other container for
application to the land. The container shall hold no more than one
hundred (100) pounds of Class A Biosolids. The distributor shall
provide the following information to the user on a label when Class A
Biosolids are packaged:
a. The name and address of the
generator of the product;
b. A statement that the
product is derived from sewage sludge;
c. Instructions on the proper
use of the product for various applications (for example, on lawns).
This must include a statement that the annual product application
rate should not be exceeded, if applicable; and,
d. Class A Biosolids that are
lead safe and are intended for use as mulch must include a statement
that the product is lead safe but not lead free.
2. Bulk Distribution of Class
A Biosolids. Bulk distribution shall mean Class A Biosolids that are
sold or given away in bulk or in a container holding more than one
hundred (100) pounds of Class A Biosolids. The requirements for the
distribution of bulk Class A Biosolids vary based on volume as
follows:
a. Less Than Twenty-Five (25)
Cubic Yards. Any distributor of Class A Biosolids shall provide the
information from §§ 3.12(B)(1)(a) through (d) of this Part, in
writing, to all users taking less than twenty-five (25) cubic yards
per day. In addition, the distributor shall inform the user, in
writing, that the Class A Biosolids shall not be further processed,
stockpiled or distributed without prior approval from the Department
unless the conditions of § 3.7(C)(4) of this Part are met.
b. More Than Twenty-Five (25)
Cubic Yards. Any distributor of Class A Biosolids must provide a
User's Guide to all users taking more than twenty-five (25) cubic
yards per day. The User's Guide shall be provided to the distributor
by the Department and shall include instructions on the proper use of
the product for various applications. The distributor must provide
the instructions for the product to the Department so that they can
be incorporated into the User's Guide.
c. Record Keeping. Any
distributor that distributes Class A Biosolids in bulk must maintain
written records of the following information when a user or another
distributor is provided with more that twenty-five (25) cubic yards
per day:
(1) date the Class A Biosolids
was taken;
(2) name of user;
(3) amount of Class A
Biosolids taken;
(4) location where Class A
Biosolids are to be applied; and
(5) signature of the operator.
(6) Said records must be
available for inspection by state and federal officials.
3. Stockpiling. The
stockpiling of Class A Biosolids shall comply with § 3.13 of this
Part.
4. Odor Control. Any
distribution site must comply with Part 120-05-17 of this Title, or
other rules and regulations pertaining to odors.
5. Transportation. All
transportation of sludge shall comply with § 3.14 of this Part.
6. Licensing. Any facility or
site that distributes packaged or bulk Class A Biosolids must comply
with the Department's Office of Natural Resource Services' Commercial
Fertilizer Law, (R.I. Gen. Laws Chapter 2-7) and any other rules and
regulations pertaining to fertilizer and soil amendment products. All
fertilizer and soil amendment products must be registered with the
Office of Natural Resource Services before being offered for sale.
7. Submissions for Approval.
The following submissions are required as part of an Application for
Order of Approval for a treated sludge distribution facility or site
and must be stamped by a registered professional engineer or land
surveyor. These submissions are in addition to the submission
requirements listed in § 3.8 of this Part.
a. Site Plan. A site plan
including all of the information listed below for all areas within
the treated sludge distribution site shall be submitted. The site
plan must be drawn to a minimum scale of one inch to one hundred feet
(1"=100'). The required information includes:
(1) Initial ground contours at
five foot intervals;
(2) Final proposed contours at
five foot intervals;
(3) Boring locations;
(4) Proposed leachate
collection and treatment systems;
(5) Buildings (where
applicable);
(6) Treated sludge stockpile
areas;
(7) Wells (if any);
(8) Surface watercourses and
other wetlands;
(9) Roads;
(10) Groundwater monitoring
wells;
(11) Legal boundaries of site;
(12) Power lines, pipelines,
rights of way and other utilities;
(13) Proposed fences;
(14) Weighing facilities (if
any), and,
(15) North arrow.
b. Management Plan. The
applicant shall submit a Management Plan describing compliance with
the provisions of §§ 3.12(B)(1) through (6) of this Part.
c. Stockpiling. The applicant
shall submit a copy of the latest U.S. Geological Topographic Map
with the distribution site outlined and an indication of the Class A
Biosolids stockpile areas. This requirement shall be waived if the
applicant proposes to stockpile Class A Biosolids in an enclosed
structure, where runoff will not occur.
d. Treated Sludge Analysis.
The applicant shall submit the results of the analysis required in §
3.11(O) of this Part.
C. Land Application of Class A
Biosolids. This subrule applies to the land application of Class A
Biosolids obtained from a generator that possesses a valid Order of
Approval from the Department to generate and distribute Class A
Biosolids. Except as provided in § 3.7(C)(3) of this Part and except
in the case of pilot projects as provided in § 3.7(E) of this Part,
all sites where Class A Biosolids is land applied must operate under
an Order of Approval and must meet the following requirements. The
land application of Class A Biosolids obtained from a generator that
does not hold a valid Order of Approval from the Department is
prohibited.
1. Stockpiling. The
stockpiling of Class A Biosolids shall comply with § 3.13 of this
Part. The quantity of Class A Biosolids stockpiled at the land
application site shall be consistent with the appropriate application
rate and size of the land application area.
2. Frozen Ground. No Class A
Biosolids shall be applied to frozen, flooded or snow-covered ground
unless appropriate erosion and runoff control measures are provided.
3. Erosion Control. Soil
erosion on all land application sites shall be limited to conditions
which meet Resource Management System Quality Criteria for soil
erosion as defined in the USDA Natural Resources Conservation Service
(NRCS) Field Office Technical Guide for Rhode Island. Erosion control
methods on all land application sites shall be consistent with
practice standards and specifications in the NRCS Field Office
Technical Guide for Rhode Island. Sediment and runoff shall be
controlled on all land application sites consistent with the measures
within the Rhode Island Soil Erosion and Sediment Control Handbook,
RI Department of Environmental Management, USDA Soil Conservation
Service and Rhode Island State Conservation Committee, 1989.
4. Odor Control. Any
distribution site must comply with Part 120-05-17 of this Title, or
other rules and regulations pertaining to odors.
5. Transportation. All
transportation of sludge shall comply with § 3.14 of this Part.
6. Submissions for Approval.
The following submissions are required as part of an Application for
Order of Approval for the land application of Class A Biosolids.
a. Management Plan. The
applicant shall submit a Management Plan describing compliance with
the provisions of §§ 3.12(C)(1) through (5) of this Part.
b. Class A Biosolids
Generator. The applicant shall identify the generator of the Class A
Biosolids to be land-applied.
D. Land Application of Class B
Biosolids:
1. Land Application of Class B
Biosolids for Agricultural Use. This subrule applies to the land
application of Class B Biosolids as a fertilizer and/or soil
amendment to enhance Agricultural Lands. All Class B Biosolids land
application projects must operate under an Order of Approval, must
meet the same requirements for land-applied sludge in §§ 3.10(F)
through (L) and 3.10(Q) through (R) of this Part, and must meet the
following additional requirements:
a. Soil Analysis. Soil from
the proposed land application site must be tested for metals listed
in § 3.33 of this Part and for the parameters listed in §
3.10(T)(3) of this Part. The Director shall determine the testing and
reporting frequency. All soil analyses shall be the responsibility of
the applicant.
b. Land Application Rates. All
Class B Biosolids intended for agricultural use must be land applied
at an annual rate not to exceed the amount necessary to supply
adequate available nitrogen for crop production using good
agricultural practices or not to exceed the maximum annual rates
recommended by the U.S. Department of Agriculture to achieve
fertilizer benefits and soil improvement.
c. Cumulative Loading Rates.
The maximum amount of Class B Biosolids that can be applied to a land
application site shall be calculated using the procedure established
in § 3.34 of this Part. The amount of metals in the soil shall be
deducted from each calculation.
d. Surface Water. No Class B
Biosolids shall be land applied within fifty (50) feet of any body of
surface water or within one hundred (100) feet of any body of surface
water within the watershed of a public drinking water supply. The
Director, may, if necessary, require continuous monitoring of any
surface watercourses in the vicinity of the proposed Class B
Biosolids application Site. Such monitoring shall be of a type and
frequency determined by the Director on a case by case basis and
shall be the responsibility of the owner or operator. This
requirement will be met if the applicant demonstrates to the
satisfaction of the Department that any runoff from the proposed
project will not affect surface water.
e. Drinking Water Wells. No
Class B Biosolids shall be land applied within fifty (50) feet of any
private drinking water supply well or within four hundred (400) feet
of any public drinking water supply well. Land application of Class B
Biosolids shall be in accordance with the Rhode Island Groundwater
Protection Act of 1985, R.I. Gen. Laws Chapter 46-13.1 and any rules
and regulations promulgated thereunder.
f. Distance to Property Lines.
No Class B Biosolids shall be land applied within fifty (50) feet of
a property line. This requirement will be waived if consent from the
adjacent landowner is received.
g. Stockpiling. All
stockpiling of Class B Biosolids shall comply with § 3.13 of this
Part.
h. Transportation. All
transportation of Class B Biosolids shall comply with § 3.14 of this
Part.
2. Land Application of Class B
Biosolids for Non-Agricultural Use. This subrule applies to land
application of Class B Biosolids as a fertilizer and/or soil
amendment to enhance non-Agricultural Lands. Such uses may include,
but are not limited to public parks and grounds, sand and gravel pit
reclamation, roadsides and medians, silviculture, playgrounds, golf
courses, ball fields and stadiums and cemeteries. All Class B
Biosolids land application projects must operate under an Order of
Approval, must meet the same requirements for land-applied sludge in
§§ 3.10(J) through (L) and §§ 3.10(Q) through (R) of this
Part, and must meet the following requirements:
a. Cumulative Loading Rates.
The maximum amount of Class B Biosolids that can be applied to a land
application site shall be calculated using the procedure established
in § 3.34 of this Part. All Class B Biosolids intended for land
application must be applied using good agricultural or silvicultural
practices.
b. Public Access. Public
access to land where Class B Biosolids is applied shall be prohibited
by the Owner or Operator until one (1) year has passed since the last
application of Class B Biosolids to land with a high potential for
public exposure, such as a park or ball field or thirty (30) days has
passed since the last application of Class B Biosolids to land with a
low potential for public exposure, such as a sand and gravel pit
reclamation Site. This requirement will be waived if a land
application site receives Class B Biosolids which meets the pathogen
limits established in § 3.32 of this Part.
c. Surface Water. No Class B
Biosolids shall be land applied within fifty (50) feet of any body of
surface water or within one hundred (100) feet of any body of surface
water within the watershed of a public drinking water supply. The
Director, may, if necessary, require continuous monitoring of any
surface watercourses in the vicinity of the proposed Class B
Biosolids application site. Such monitoring shall be of a type and
frequency determined by the Director on a case by case basis and
shall be the responsibility of the owner. This requirement will be
met if the applicant demonstrates to the satisfaction of the
Department that the proposed project will not affect surface water.
d. Drinking Water Wells. No
Class B Biosolids shall be land applied within fifty (50) feet of any
private drinking water supply well or within four hundred (400) feet
of any public drinking water supply well. Land application of Class B
Biosolids shall be in accordance with the Rhode Island Groundwater
Protection Act of 1985, R.I. Gen. Laws Chapter 46-13.1 and any rules
and regulations promulgated thereunder.
e. Distance to Property Lines.
No Class B Biosolids shall be land applied within fifty (50) feet of
a property line. This requirement will be waived if written consent
is received from the adjacent land owner.
f. Stockpiling. All
stockpiling of Class B Biosolids shall comply with § 3.13 of this
Part.
g. Transportation. All
transportation of Class B Biosolids shall comply with § 3.14 of this
Part.
3. Submissions for Approval.
The following submissions are required as part of an Application for
Order of Approval for the agricultural or non-agricultural use of
Class B Biosolids and must be stamped by a registered professional
engineer or land surveyor. These submissions are in addition to the
submission requirements listed in § 3.8 of this Part.
a. Management Plan. The
applicant shall submit a Management Plan that includes the following
information:
(1) Detailed description of
the Class B Biosolids land application project and the proposed
sequence of operation;
(2) Provisions for compliance
with §§ 3.12(C)(1) or 3.12(C)(2) of this Part;
(3) Personnel and duties;
(4) Procedures to control
dust;
(5) Procedures to control
erosion, sedimentation and promote vegetative growth;
(6) Equipment to be utilized;
(7) Substitute equipment
available;
(8) Provisions to control
access;
(9) Estimated life of Class B
Biosolids land application area, and
(10) Aesthetic considerations.
b. Class B Biosolids and Soil
Analysis. The results of the Class B Biosolids analysis required in §
3.11(O) of this Part and the soil analysis required in §
3.12(D)(1)(a) of this Part must be on file with the Office of Water
Resources at the time of application.
E. Disposal of Class C
Biosolids. Class C Biosolids may be used as cover material for solid
waste landfills and land disposal sites under § 3.12(F) of this
Part. Class C Biosolids may be disposed of by burial at land disposal
sites and solid waste landfills under §§ 3.9 and 3.16 of this Part.
Land application of Class C Biosolids is prohibited.
F. Use of Treated Sludge as
Landfill Cover. This subrule applies to the use of treated sludge as
cover material at solid waste landfills and land disposal sites. Use
at solid waste landfills must be in accordance with the Department’s
solid waste regulations. All solid waste landfills and land disposal
sites using treated sludge as cover material must operate under an
Order of Approval and must meet the following requirements.
1. Solid Waste Landfills.
Solid waste landfill uses include the following:
a. Daily Cover. Treated sludge
may be used as initial or daily landfill cover only as an amendment
in amounts to be approved on a case-by-case basis.
b. Intermediate Cover. Treated
sludge may be used as an amendment in the creation of a six-inch (6")
intermediate cover over the initial cover layer.
c. Final Cover. Treated sludge
may be used as final landfill cover as an application of soil of
sufficient type and thickness to support vegetative growth.
2. Land Disposal Sites.
Treated sludge may be used as final cover for land disposal sites as
an application of soil of sufficient type and thickness to support
vegetative growth.
3. Application Rates. Treated
sludge used as cover shall be applied at a rate determined on a
case-by-case basis. Use at solid waste landfills shall be in
accordance with procedures established in the department’s solid
waste regulations.
4. Surface Water. Treated
sludge used as cover shall not be applied within fifty (50) feet of
any body of surface water. This requirement will be met if the
applicant demonstrates to the satisfaction of the Department that any
runoff from the project will not affect surface water.
5. Odor Control. Any solid
waste landfill or land disposal site using treated sludge as cover
must comply with Part 120-05-17 of this Title, or other rules and
regulations pertaining to odors.
6. Transportation. All
transportation of treated sludge shall comply with § 3.14
of this Part.
7. Submissions for Approval.
The following submissions are required as part of an Application for
Order of Approval for the use of treated sludge as cover material at
solid waste landfills and land disposal sites and must be stamped by
a registered professional engineer or land surveyor. These
submissions are in addition to the submission requirements listed in
§ 3.8 of this Part. All submissions for approval and amendments to
solid waste landfill operating and/or closure plans for using treated
sludge for landfill cover must also be approved by the Office of
Waste Management, in accordance with the solid waste regulations.
a. Management Plan. The
applicant shall submit a Management Plan describing compliance with
the provisions of §§ 3.12(F)(1) through (6) of this Part.
b. Treated Sludge Analysis.
The applicant shall submit the results of the analysis required in §
3.11(O) of this Part.
3.13 Stockpiling
A. This rule applies to the
stockpiling of untreated and treated sludge at a sludge management
facility or site. Except as provided in § 3.7(C)(4) of this Part,
all stockpile facilities and sites must operate under an Order of
Approval. Requirements for stockpiling sludge are as follows:
B. Untreated Sludge. Other
than in approved storage facilities at publicly or privately owned
treatment works, the stockpiling of untreated sludge is prohibited.
Arrangements must be made to either:
1. Treat all sludge
immediately upon arrival at a sludge treatment facility;
2. Bury all sludge immediately
upon arrival at a land disposal or co-disposal facility or site; and,
3. Land apply all sludge
immediately upon arrival at a land application site.
C. Treated Sludge. The
stockpiling of treated sludge shall meet the following requirements:
1. Groundwater. A minimum of
two (2) feet of soil is required between the lowest level of
stockpiled sludge and the seasonal high groundwater table as
determined by a DEM-licensed Class IV soil evaluator in accordance
with the procedures described in Part 6 of this Subchapter. The
determination of the seasonal high groundwater table must be
witnessed by the Department. In addition, a minimum of three (3) feet
of soil is required between the highest level of bedrock and the
lowest level of stockpiled sludge. If the applicant seeks a variance
from these separation distances under § 3.22 of this Part, the
applicant must demonstrate to the satisfaction of the Office of Water
Resources that the sludge treatment facility or site will not
generate leachate. Otherwise, the Director will require the
installation of an impermeable liner system or leachate collection
and treatment system or other means to prevent leachate from reaching
the groundwater as a condition for the granting of such variance.
2. Surface Water. No treated
sludge shall be stockpiled within two hundred (200) feet of any body
of surface water. No treated sludge shall be stockpiled within the
watershed of any surface water used as a public drinking water
supply. The Director may, if necessary, require continuous monitoring
of any surface watercourses in the vicinity of the stockpile site.
Such monitoring shall be of a type and frequency determined by the
Director on a case by case basis and shall be the responsibility of
the owner or operator of the facility or site. If the applicant seeks
a variance from these separation distances under § 3.22 of this
Part, the applicant must demonstrate to the satisfaction of the
Department that any runoff from the sludge treatment facility or site
will not impact surface water as a condition for the granting of such
variance.
3. Drinking Water Wells. No
treated sludge shall be stockpiled within one thousand (1,000) feet
of any private drinking water supply well or within the Wellhead
Protection Area for a public drinking water supply well. Any
stockpile site shall comply with the Rhode Island groundwater
Protection Act of 1985, R.I. Gen. Laws Chapter 46-13.1 and any rules
and regulations promulgated thereunder. If the applicant seeks a
variance from these separation distances under § 3.22 of this Part,
the applicant must demonstrate to the satisfaction of the Department
that the stockpile site will not generate leachate. Otherwise, the
Director will require the installation of an impermeable liner system
or other means to prevent leachate from reaching the groundwater as a
condition for the granting of such variance.
4. Distance to Property Lines.
No treated sludge shall be stockpiled within one hundred (100) feet
of a property line. If the applicant seeks a variance from this
separation distance under § 3.22 of this Part, the Director will
require that the treated sludge be stockpiled in a facility that is
enclosed as a condition for the granting of such variance.
5. Monitoring Wells. For the
purpose of monitoring groundwater conditions, the owner or operator
of a stockpile facility or site shall install and maintain monitoring
wells of a number and type approved by the Director and at locations
chosen by the Director. The owner or operator of the site is
responsible for analysis of groundwater in accordance with
instructions of the Director. The Director shall determine the
testing and reporting frequency. If the applicant seeks a variance
from this requirement, the Director will require that the treated
sludge be stockpiled in a facility that is completely enclosed as a
condition for the granting of such variance.
6. Odor Control. Any stockpile
facility or site must comply with Part 120-05-17 of this Title, or
other rules and regulations pertaining to odors.
D. Submissions for Approval.
The following submissions are required as part of an Application for
Order of Approval for the stockpiling of treated sludge and must be
stamped by a registered professional engineer or land surveyor. These
submissions are in addition to the submission requirements listed in
§ 3.8 of this Part.
1. Management Plan. The
applicant shall submit a Management Plan describing compliance with
the provisions of §§ 3.13(C)(1) through (6) of this Part.
2. Treated Sludge Analysis.
The applicant shall submit the results of the analysis required in §
3.11(O) of this Part.
3.14 Transportation
A. This rule applies to the
transportation of sludge on public roads. Except as provided in §
3.7(C)(1) of this Part, all transporters operating within or entering
the State of Rhode Island for the purpose of treatment, disposal,
stockpiling, and/or land application of sludge within the State of
Rhode Island shall operate under an Order of Approval and shall meet
the requirements in this rule. All other transporters entering the
State of Rhode Island shall not be required to operate under an Order
of Approval. However, such transporters shall meet the requirements
in § 3.14(B) of this Part below.
B. Vehicles and Containers.
All vehicles and containers that are used for transportation of
sludge shall comply with the following:
1. Each container and vehicle
shall be maintained so as not to create objectionable odors or public
health or environmental hazards;
2. All open containers shall
be covered during transport to minimize odors and to prevent loss of
sludge;
3. Each container transporting
sludge from which liquid might be released during transport shall be
watertight;
4. Vehicles and containers
containing sludge shall not be placed for longer than 24 hours at a
facility or site;
5. All containers shall be
inspected by the driver prior to transport on public roads to ensure
that sludge will not leak or spill out during transportation; and,
6. All vehicles and containers
shall conform to all applicable state and federal requirements.
C. Recordkeeping. With the
exception of Class A Biosolids, a transporter shall keep a written
record of the following information for each load of sludge:
1. Date the sludge is removed
from the generator’s facility or site;
2. Generator’s name, address
and telephone number;
3. Characteristics of sludge
(i.e. liquid or solid);
4. Quantity of sludge, in wet
tons, dry tons and gallons (if in liquid form);
5. Name, address and telephone
number of the facility(ies) or site(s) to which the sludge is to be
delivered; and,
6. The date delivered to the
facility or site.
D. Reporting. With the
exception of Class A Biosolids, the transporter shall submit monthly
the information required in § 3.14(C) of this Part above to the
Office of Water Resources by no later than the 15th day of the
following month.
E. Submissions for Approval.
The following submissions are required as part of an Application for
Order of Approval for transportation of sludge.
1. Application Form. The
applicant shall provide information on the proposed sludge management
activity on an application form obtained from the department.
2. Management Plan. A
Management Plan shall be submitted describing provisions for
compliance with §§ 3.14(B) through (D) of this Part.
3.15 Incineration
A. Incineration of sludge
shall be permitted if the incinerator system employed complies with
rules and regulations promulgated by the Department and the USEPA
regarding incinerators, air pollution, and all other applicable
provisions of the law and such rules and regulations. All sludge
incinerators shall operate under an Order of Approval.
B. Incineration Methods.
Sludge incineration may be practiced by, but not limited to, the
methods described below. Any proposed sludge incineration method must
consider the treatment of exhaust gases to exclude harmful organics
and particulates as stated in EPA and Rhode Island Air Pollution
Control Regulations. Any comparable method of sludge incineration
shall be considered by the Director for approval.
1. Multiple Hearth
Incineration which includes, but is not limited to, "excess air"
and pyrolysis.
2. Fluidized Bed Reactor which
includes, but is not limited to, typical graded silica sand beds for
the incineration of sludge.
C. Sludge Analysis. All sludge
intended for incineration may be required to be tested using the
Toxicity Characteristic Leaching Procedure for the parameters listed
in § 3.31 of this Part and the results submitted to the Office of
Water Resources. The Director shall determine the testing and
reporting frequency. All sludge analyses shall be the responsibility
of the owner of the facility that generates the sludge.
D. Condition of Sludge. All
sludge intended for incineration shall not meet the criteria for
hazardous waste.
E. Odor Control. Any sludge
incinerator must comply with Part 120-05-17 of this Title, or other
rules and regulations pertaining to odors.
F. Transportation. All
transportation of sludge shall comply with § 3.14 of this Part.
G. Regional Incineration. This
subrule applies to any incinerators that incinerate or propose to
incinerate sludge from more than one publicly owned treatment works
or privately owned treatment works. All such incinerators shall
operate under an Order of Approval and shall meet the requirements in
this subrule.
1. Sludge Approval. The owner
or operator of an incinerator shall obtain prior approval from the
department for the sludge from each publicly owned treatment works or
privately owned treatment works that is proposed to be incinerated.
The owner or operator of an incinerator proposing to incinerate
sludge from multiple publicly owned treatment works or privately
owned treatment works shall submit the following information to the
department:
a. Name and address of
publicly owned treatment works or privately owned treatment works
where the sludge is generated;
b. Description of the publicly
owned treatment works or privately owned treatment works including
but not limited to the type of wastewater treatment employed and
design flow;
c. Estimate of how much sludge
in dry tons/year is generated by the publicly owned treatment works
or privately owned treatment works;
d. Estimate of how much sludge
in dry tons/year from publicly owned treatment works or privately
owned treatment works will be incinerated at the regional
incinerator;
e. Description of the sludge
characteristics including but not limited to whether the sludge is
liquid or solid and the average moisture content of the sludge;
f. Name and address of the
transporter;
g. Copy of results for sludge
testing using the Toxicity Characteristics Leaching Procedure for the
parameters listed in § 3.31 of this Part (testing shall have been
performed no more than one (1) year prior to submittal);
h. Proposed dates for the
regional incinerator to incinerate sludge from the publicly owned
treatment works or privately owned treatment works; and,
i. Explanation of available of
storage, dewatering and incineration capacity at the regional
incinerator.
2. Sludge Analysis. A sludge
sample shall be collected daily from the incinerator sludge storage
tank and composited into one sample each month which shall be
analyzed for total metals.
3. Emergency Contingency Plan.
All regional incinerators shall have an emergency contingency plan in
place which outlines procedures for continued, uninterrupted disposal
of sludge in the event that the regional incinerator is not able to
accept and/or incinerate sludge for any reason including mechanical
failure. The emergency contingency plan shall include a listing of
alternate disposal sites for sludge.
4. Reporting. The owner or
operator of a regional incinerator shall submit monthly reports to
the department no later than the 15th day of the following month that
includes the following information:
a. Names of all publicly owned
treatment works and privately owned treatment works from which
incinerated sludge was generated from;
b. Quantity of sludge
incinerated including number of loads received, total gallons
received, average moisture content of sludge, and total dry tons of
sludge received from each publicly owned treatment works or privately
owned treatment facility; and,
c. Copy of sludge analysis
required in § 3.15(G)(2) of this Part.
H. Submissions for Approval.
The following submissions are required as part of an Application for
Order of Approval for incineration of sludge and must be stamped by a
registered professional engineer or land surveyor.
1. Application Form. The
applicant shall provide information on the proposed sludge management
activity on an application form obtained from the department.
2. Management Plan. Any owner
or applicant who wishes to engage in sludge incineration must submit
a Management Plan describing compliance with the requirements of
these rules and regulations to the Director to be reviewed and
evaluated individually before approval is issued. An owner or
applicant seeking to operate as a regional incinerator shall also
describe compliance with requirements in § 3.15(G) of this Part.
3.16 Co-Disposal
of Sludge and Solid Waste
A. This rule applies to the
disposal of sludge by burial at a solid waste landfill approved for
the disposal of solid waste by the Department. Any such solid waste
landfill must operate under an Order of Approval.
B. Sludge Analysis. All sludge
intended for disposal at a solid waste landfill may be required to be
tested using the Toxicity Characteristic Leaching Procedure for the
parameters listed in § 3.31 of this Part and the results submitted
to the Office of Water Resources. The owner or operator of the
facility that generated the sludge shall be responsible for all
analyses. The Director shall determine the testing and reporting
frequency.
C. Condition of Sludge. All
sludge intended for disposal at a solid waste landfill shall be
treated by one of the Processes to Significantly Reduce Pathogens
described in § 3.28 of this Part. Such treatment shall be the
responsibility of the owner or operator of the facility that
generated the sludge. All sludge intended for disposal at a solid
waste landfill shall not meet the criteria for hazardous waste.
D. Cover Material. A soil
cover of at least six (6) inches shall be applied to all sludge,
Composted sludge or treated sludge deposits daily to control disease
vectors and nuisance conditions.
E. Transportation. All
transportation of sludge shall comply with § 3.14 of this Part.
F. Odor Control. Any such
solid waste landfill site must comply with Part 120-05-17 of this
Title, and other rules and regulations pertaining to odors.
G. Submissions for Approval.
The following submissions are required as part of an Application for
Order of Approval for incineration of sludge and must be stamped by a
registered professional engineer or land surveyor.
1. Application Form. The
applicant shall provide information on the proposed sludge management
activity on an application form obtained from the department.
2. Management Plan. Any owner
or applicant who wishes to engage in the disposal of sludge by burial
at a solid waste landfill must submit a plan describing compliance
with the requirements in this rule to the Director to be reviewed and
evaluated individually before approval is issued.
3.17 Ocean
Disposal
The discharge or disposal of
sludge, Composted sludge or treated sludge into the waters of the
State is prohibited in accordance with R.I. Gen. Laws Chapter 46-12.
3.18 Notification
of Closure and Closure Procedure
A. Land Disposal Facilities or
Sites. The owner of a land disposal site shall notify the Office of
Water Resources in writing within ninety (90) days prior to the date
the owner intends to close said site. The notification shall provide
that the owner will physically remove all materials on site or the
owner will abide by the closure plan, including the post-closure
monitoring and financial provisions, as submitted by the applicant
and approved by the Office of Water Resources under §
3.9(N)(4) of this Part.
B. Other Facilities or Sites.
The owner of any facility or site other than a land disposal site
shall notify the Office of Water Resources in writing at least thirty
(30) days prior to the date the owner intends to close said facility
or site. Before a facility or site will be considered closed, the
Office of Water Resources shall conduct a final investigation to
determine compliance with the provisions of these rules and
regulations and the approved Management Plan.
3.19 Limited
Access
Operations of a facility or
site shall be limited to those hours specified in the approved
Management Plan.
3.20 Sludge
Release
A. In the event of a release
or spill of sludge, the owner or operator of the facility or site
where the sludge release occurred or the transporter (if the release
occurred during transport) shall be required to do the following:
1. Immediately take action to
contain the release, minimize the environmental impact, and begin
clean up procedures.
2. Verbally notify the
Department within 24 hours of the release with the following
information:
a. The date, time and location
of the release;
b. The quantity of sludge
released and the quantity of sludge recovered, in gallons and wet
tons;
c. The quantity and final
disposition of any sludge not recovered;
d. The name, address and
telephone number of the driver involved (if sludge release occurs
during transport);
e. The name, address and
telephone number of the facility or site that generated the sludge;
f. The approximate distance to
any surface waters and storm drains;
g. The actions taken to
control the extent of the release and minimize the environmental
impact; and,
h. Future actions necessary to
clean up the release, if applicable.
3. Submit a certified letter
to the Department within five (5) days of the release that includes
but is not limited to the information required in § 3.20(A)(2) of
this Part signed by the owner of the facility or site where the
release occurred. In the event that the release occurred during
transport, the transporter shall submit the certified letter.
4. Notification of the release
to the Department shall not be required if all of the following
conditions are met:
a. The release is less than 25
gallons or 5 cubic feet if the sludge contains greater than 10
percent solids;
b. The release is immediately
contained;
c. The release is completely
removed within 24 hours; and,
d. The release does not
discharge to a surface water or storm drain system.
3.21 Existing
Facilities or Sites
All facilities or sites that
are operating on the effective date of these rules and regulations
(the "existing facilities") may continue to operate in
compliance with their current Orders of Approval, which shall remain
in full force and effect unless suspended or revoked by the Director
in accordance with § 3.23 of this Part.
3.22 Variances
A. Any owner or applicant may
submit a written request to the Director for a variance from some or
all provisions of these rules and regulations.
B. The owner or applicant
shall have the burden of proving by clear and convincing evidence
that a variance should be granted because alternative design or
operating standards or alternative methods proposed in the variance
application fulfill the purposes of the rules and regulations from
which the variance is requested and shall have no adverse effect on
public health and the environment.
C. The Director may require
that the applicant provide notification of any request for variance
to all potentially affected parties as determined by the Director. At
a minimum, the applicant may be required to notify all abutters of
the proposed facility or site. The Director may schedule a public
hearing as required pursuant to R.I. Gen. Laws Chapter 42-35 to
solicit public comment prior to rendering a decision on the variance
request. The applicant shall be required to pay the expenses for
notice and hearing.
D. The Director's decision to
grant or deny a variance shall be in writing and may, as a condition
of granting the variance, impose appropriate requirements necessary
to protect the public health and environment.
E. Issuance of a variance
pursuant to this rule does not relieve the holder of the variance
from complying with requirements of these rules and regulations which
have not been the subject of a variance.
3.23 Denial,
Suspension, Revocation of Approval
A. The Director may suspend or
revoke, in whole or in part, an approval for cause, including, but
not limited to:
1. Failure to comply with
these rules and regulations;
2. Refusal to permit a
reasonable inspection;
3. Information indicating that
the facility or site may result in probable harm to the environment
or pose a threat to the health, safety and/or welfare of the public;
4. The information on the
Application for Order of Approval or in any other material in support
of the application is found to be false, misleading, or erroneous;
or,
5. Failure to comply with any
conditions or provisions of the Order of Approval.
B. Whenever the Director
determines that a facility or site is not being operated in
conformance with these rules and regulations or the Order of
Approval, the Director may order the owner to take appropriate
corrective action necessary to secure compliance with these rules and
regulations and to order closure of said facility or site.
C. The Director may deny an
application for failure to satisfy the requirements of these rules
and regulations.
D. A notice of suspension or
revocation of an approval or the denial of an application shall be in
the form of a letter notifying the owner or operator of the facility
or site or subsequent transferee of the suspension, revocation, or
denial and the reasons for the suspension, revocation, or denial.
E. Any person served with a
notice of suspension or revocation of an approval or the denial of an
application may request an adjudicatory hearing to contest the
suspension, revocation or denial as set forth in § 3.23 of this
Part. A notice of suspension, revocation or denial automatically
becomes a final order of the Director enforceable in Superior Court
upon failure to file a timely request for said adjudicatory hearing
(as described in § 3.23 of this Part).
3.24 Penalties
Penalties may be assessed in
accordance with R.I. Gen. Laws Chapters 46-12, 23-18.9, 23-19.1,
42-17.1, 42-17.6, and Part 130-00-1 of this Title for any violation
of these rules and regulations.
3.25 Appeals
A. General. The procedures for
appeal of Departmental decisions pursuant to the provisions of R.I.
Gen. Laws Chapter 42-35 are contained in both Part 10-00-1 and Part
20-00-1 of this Title.
B. Appeal Procedure for
Approval Denials. Any person whose approval application is denied may
appeal to the Director for review of the decision on which the denial
is based by filing an appeal with DEM/Administrative Adjudication.
1. Filing of Appeal. All
appeals shall be in writing and shall be filed with and received by
DEM/Administrative Adjudication within thirty (30) days after the
effective date of the denial of the subject application. See R.I.
Gen. Laws § 42-17.7-9.
2. Contents of Appeal. Every
appeal shall contain a detailed basis upon which the appeal is taken.
3. Notice of Administrative
Hearing. Upon the filing of an appeal with DEM/Administrative
Adjudication, and once the hearing schedule allows,
DEM/Administrative Adjudication shall notify by first class mail
those persons as determined by the Director of the date, time and
place of the adjudicatory hearing, in conformance with R.I. Gen. Laws
§ 42-35-9.
C. Appeal Procedure for Notice
of Violations. 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 DEM/Administrative Adjudication.
1. Filing of Appeal. All
appeals shall be in writing and shall be filed with and received by
DEM/Administrative Adjudication within twenty (20) days after the
date of receipt of the subject NOV, suspension or revocation. See
R.I. Gen. Laws § 42-17.7-9.
2. Contents of Appeal. Every
appeal shall contain a detailed basis upon which the appeal is taken.
See R.I. Gen. Laws § 42-17.7-9.
3.26 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.
3.27 Superseded
Rules and Regulations
On the effective date of
these rules and regulations, all previous rules and regulations, and
any policies regarding the administration and enforcement of sewage
sludge management 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.
3.28 Appendix
1 - Processes to Significantly Reduce Pathogens
A. Aerobic Digestion. The
process is conducted by agitating sludge with air or oxygen to
maintain aerobic conditions at residence times ranging from 60 days
at 15°C to 40 days at 20°C.
B. Air Drying. Sludge is dried
on sand beds or on paved or unpaved basins. A minimum of three months
is needed, two months of which temperatures average on a daily basis
above 0°C.
C. Anaerobic Digestion. The
process is conducted in the absence of air at residence times
ranging from 60 days at 20°C to 15 days at 35°C to 55°C.
D. Composting. Either the
within-vessel, static aerated pile or windrow composting method is
used to maintain the temperature of the sludge at 40°C or higher for
5 days. For 4 hours during the 5-day period, the temperature in the
compost pile exceeds 55°C.
E. Lime Stabilization.
Sufficient lime is added to the sludge to produce a pH of 12 after 2
hours of contact. pH measurements shall be performed at 25°C or
corrected to 25°C.
F. Other Methods. Other
methods or operating conditions, if accepted by the U.S.
Environmental Protection Agency, may be used if pathogens are reduced
to an extent equivalent to the reduction achieved by any of the above
methods.
3.29 Appendix
2 - Processes to Further Reduce Pathogens
A. Composting. Using either
the within‑vessel composting method or the static aerated pile
composting method, the temperature of the sewage sludge is maintained
at 55°C or greater for three days. Using the windrow composting
method, the temperature of the sewage sludge is maintained at 55°C
or greater for at least 15 days. During the period when the compost
is maintained at 55°C or greater, there shall be a minimum of five
turnings of the windrow.
B. Heat Drying. Sewage sludge
is dried by direct or indirect contact with hot gases to reduce the
moisture content of the sewage sludge to 10 percent or lower. Either
the temperature of the sewage sludge particles exceed 80°C or the
wet bulb temperature of the gas in contact with the sludge at the
point where it leaves the dryer exceeds 80°C.
C. Heat Treatment. Liquid
sludge is heated to a temperature of 180°C or higher for 30 minutes.
D. Thermophilic Aerobic
Digestion. Liquid sludge is agitated with air or oxygen to maintain
aerobic conditions at residence times of 10 days at 55°C to 60°C.
E. Beta Ray Irradiation.
Sludge is irradiated with beta rays from an accelerator at dosages of
at least 1.0 megarad at room temperature (ca. 20°C).
F. Gamma Ray Irradiation.
Sludge is irradiated with gamma rays from certain isotopes, such as
Cobalt 60 and Cesium 137 at room temperature (ca. 20°C).
G. Pasteurization. Sludge is
maintained at a minimum temperature of 70°C for at least 30 minutes.
H. Other Methods. Other
methods or operating conditions if acceptable by the U.S.
Environmental Protection Agency may be used if pathogens are reduced
to an extent equivalent to the reduction achieved by any of the above
methods.
3.30 Appendix
3 - Vector Attraction Reduction Requirements
A. Reduction in Volatile
Solids Content. The mass of volatile solids in the sewage sludge
shall be reduced by a minimum of 38 percent (see calculation
procedures in "Environmental Regulations and Technology, Control
of Pathogens and Vector Attraction in Sewage Sludge",
EPA/625/R-92/013, July 2003, U.S. Environmental Protection Agency,
Cincinnati, Ohio 45268).
B. Additional Digestion of
Anaerobically Digested Biosolids. When the 38 percent volatile solids
reduction requirement in option A cannot be met for an anaerobically
digested sewage sludge, vector attraction reduction can be
demonstrated by digesting a portion of the previously digested
sewage sludge anaerobically in the laboratory in a bench-scale unit
for 40 additional days at a temperature between 30°C and 37°C. When
at the end of the 40 days, the volatile solids in the sewage sludge
at the beginning of that period is reduced by less than 17 percent,
vector attraction reduction is achieved.
C. Additional Digestion of
Aerobically Digested Biosolids. When the 38 percent volatile solids
reduction requirement in option A cannot be met for an aerobically
digested sewage sludge, vector attraction reduction can be
demonstrated by digesting a portion of the previously digested sewage
sludge that has a percent solids of 2 percent or less aerobically in
the laboratory in a bench-scale unit for 30 additional days at 20°C.
When at the end of the 30 days, the volatile solids in the sewage
sludge at the beginning of that period is reduced by less than 15
percent, vector attraction reduction is achieved.
D. Specific Oxygen Uptake Rate
(SOUR) for Aerobically Digested Biosolids. The specific oxygen uptake
rate (SOUR) for sewage sludge treated in an aerobic process shall be
equal to or less than 1.5 milligrams of oxygen per hour per gram of
total solids (dry weight basis) at a temperature of 20°C.
E. Aerobic Processes at
Greater Than 40°C. Sewage sludge shall be treated in an aerobic
process for 14 days or longer. During that time, the temperature of
the sewage sludge shall be higher than 40°C and the average
temperature of the sewage sludge shall be higher than 45°C.
F. Addition of Alkaline
Material. The pH of sewage sludge shall be raised to 12 or higher by
alkali addition and, without the addition of more alkali, shall
remain at 12 or higher for two hours and then at 11.5 or higher for
an additional 22 hours. PH measurements shall be performed at 25°C
or corrected to 25°C.
G. Moisture Reduction of
Biosolids Containing No Unstabilized Solids. Sewage sludge shall not
contain unstabilized solids generated during primary treatment and
the solids content of the sewage sludge shall be at least 75 percent
before the sewage sludge is mixed with other materials. The solids
content of the sewage sludge shall be achieved by removing water, not
by adding inert materials.
H. Moisture Reduction of
Biosolids Containing Unstabilized Solids. Solids content of the
sewage sludge shall be at least 90 percent, regardless of whether the
sewage sludge is from primary treatment. The solids content of the
sewage sludge shall be achieved by removing water, not by adding
inert materials. The sewage sludge shall not be exposed to high
humidity prior to use or disposal to prevent the outer surface of the
sewage sludge from gaining moisture content.
I. Biosolids Injection:
1. Sewage sludge shall be
injected below the surface of the land, and,
2. No significant amount of
the sewage sludge shall be present on the land surface within 1 hour
after the sewage sludge is injected, and,
3. When the sewage sludge that
is injected below the surface of the land meets the pathogen limits
in Appendix 5, § 3.32 of this Part, the sewage sludge shall be
injected below the land surface within 8 hours after being discharged
from the pathogen reduction process.
J. Incorporation of Biosolids
into the Soil:
1. Sewage sludge applied to
the land surface or placed on a surface disposal site shall be
incorporated into the soil within 6 hours after application to or
placement on the land, and,
2. When sewage sludge that is
incorporated into the soil meets the pathogen limits in § 3.32 of
this Part, the sewage sludge shall be applied to or placed on the
land within 8 hours after being discharged from the pathogen
reduction process.
K. Covering Sludge (Land
Disposal Only). Sewage sludge placed on a surface disposal site shall
be covered with soil or other material at the end of each operating
day.
3.31 Appendix
4 - Maximum Concentration of Contaminants for the Toxicity
Characteristic Leachate Procedure
EPA
Hazardous Waste Number
Contaminant
Regulatory
Limit (mg/L)
D004
Arsenic
5.0
D005
Barium
100.0
D018
Benzene
0.5
D006
Cadmium
1.0
D019
Carbon
tetrachloride
0.5
D020
Chlordane
0.03
D021
Chlorobenzene
100.0
D022
Chloroform
6.0
D007
Chromium
5.0
D023
o-Cresol
200.0
D024
m-Cresol
200.0
D025
p-Cresol
200.0
D026
Cresol
200.0
D016
2,4-D
10.0
D027
1,4-Dichlorobenzene
7.5
D028
1,2-Dichloroethane
0.5
D029
1,1-Dichloroethylene
0.7
D030
2,4-Dinitrotoluene
0.13
D012
Endrin
0.02
D031
Heptachlor
(and its hydroxide)
0.008
D032
Hexachlorobenzene
0.13
D033
Hexachlorobutadiene
0.5
D034
Hexachloroethane
3.0
D008
Lead
5.0
D013
Lindane
0.4
D009
Mercury
0.2
D014
Methoxychlor
10.0
D035
Methyl
ethyl ketone
200.0
D036
Nitrobenzene
2.0
D037
Pentachlorophenol
100.0
D038
Pyridine
5.0
D010
Selenium
1.0
D011
Silver
5.0
D039
Tetrachloroethylene
0.7
D015
Toxaphene
0.5
D040
Trichloroethylene
0.5
D041
2,4,5-Trichlorophenol
400.0
D042
2,4,6-Trichlorophenol
2.0
D017
2,4,5-TP
(Silvex)
1.0
D043
Vinyl
chloride
0.2
3.32 Appendix
5 - Class A Biosolids Limits
A. Metals:
METAL
LIMIT,
mg/kg (dry weight)
Arsenic
41
Cadmium
39
Copper
1500
Lead
300
Mercury
17
Nickel
420
Selenium
100
Zinc
2800
B. Pathogens. The following
pathogen limit must be met:
PATHOGEN
LIMIT
Fecal
Coliform Bacteria
Less
than 1000 Most Probable Number
per
1 gram of total solids (dry weight)
1. Pathogen reduction must
take place before or at the same time as vector attraction reduction
except when options in §§ 3.30(F) through (J) of this Part are
used.
3.33 Appendix
6 - Class B Biosolids Limits and Characteristics
A. Metals:
METAL
LIMIT,
mg/kg (dry weight)
Arsenic
75
Cadmium
85
Copper
4300
Lead
840
Mercury
57
Molybdenum
75
Nickel
420
Selenium
100
Zinc
7500
B. Characteristics:
CHARACTERISTICS
Ratio
of Sludge to Bulking Agent (if applicable)
Density
of Composted Sludge (if applicable)
Moisture
Content (%)
Total
Volatile Solids (%)
Ammonia
Nitrogen (%)
Nitrate
Nitrogen (%)
Total
Nitrogen (%)
Available
Phosphoric Acid (%)
Soluble
Potash (%)
Specific
Conductivity
pH
3.34 Appendix 7 - Maximum Cumulative Loading Rates
METAL
DRY
TONS PER ACRE
Arsenic
41
kg As/hectare
(
ppm As) x 0.002
Cadmium
39
kg Cd/hectare
(
ppm Cd) x 0.002
Copper
1500
kg Cu/hectare
(
ppm Cu) x 0.002
Lead
300
kg Pb/hectare
(
ppm Pb) x 0.002
Mercury
17
kg Hg/hectare
(
ppm Hg) x 0.002
Nickel
420
kg Ni/hectare
(
ppm Ni) x 0.002
Selenium
100
kg Se/hectare
(
ppm Se) x 0.002
Zinc
2800
kg Zn/hectare
(
ppm Zn) x 0.002
The
parts per million of each metal are provided in the sludge
analyses. The lowest value is chosen from the above nine (9)
calculations as the maximum cumulative tons of sludge which can be
applied per acre.