WQ0040265_Final Permit_20190122

ROY COOPER
Governor
MICHAEL S. REGAN
Secretary
LINDA CULPEPPER
Director
NORTH CAROLINA
Environmental Quality
January 22, 2019
WAYNE FENTON —ASSISTANT SOLID WASTE DIRECTOR
CITY OF DURHAM
101 CITY HALL PLAZA
DURHAM, NORTH CAROLINA 27701
Subject: Permit No. WQ0040265
North Durham Composting DCAR
Distribution of Class A
Residuals
Durham County
Dear Mr. Fenton:
In accordance with your permit application request received August 31, 2018, and subsequent
additional information received November 15, 2018, we are forwarding herewith Permit No. WQ0040265
dated January 22, 2019, to the City of Durham for the construction and operation of the subject residuals
management program.
This permit shall be effective from the date of issuance until September 30, 2024, and shall be
subject to the conditions and limitations as specified therein. Please pay particular attention to the
monitoring requirements listed in Attachment A. Failure to establish an adequate system for collecting and
maintaining the required operational information shall result in future compliance problems.
If any parts, requirements or limitations contained in this permit are unacceptable, the Permittee
has the right to request an adjudicatory hearing upon written request within 30 days following receipt of
this permit. This request shall be in the form of a written petition, conforming to Chapter 150B of the North
Carolina General Statutes, and filed with the Office of Administrative Hearings at 6714 Mail Service
Center, Raleigh, NC 27699-6714. Unless such demands are made, this permit shall be final and binding.
One set of approved plans and specifications is being forwarded to you. If you need additional
information concerning this permit, please contact Troy Doby at [phone] or troy.doby_(k),ncdenr.gov.
Sincerely,
Linda Culpepper, Director
Division of Water Resources
cc: Durham County Health Department (Electronic Copy)
Raleigh Regional Office, Water Quality Regional Operations Section (Electronic Copy)
John P. Fearrington, PE— Smith -Gardner Engineers (Electronic Copy)
Laserfiche File (Electronic Copy)
Digital Permit Archive (Electronic Copy)
Central Files
.� _ North Carolina Department of Environmental Quality I Division of Water Resources
�J"/� 512 North Salisbury Street 1 1617 Mail Service Center I Raleigh, North Carolina 27699-1617
NORrN CAROUNA '�"'
919.707.9000

THIS PAGE BLANK

NORTH CAROLINA
ENVIRONMENTAL MANAGEMENT COMMISSION
DEPARTMENT OF ENVIRONMENTAL QUALITY
RALEIGH
DISTRIBUTION OF CLASS A RESIDUALS PERMIT
In accordance with the provisions of Article 21 of Chapter 143, General Statutes of North Carolina as
amended, and other applicable Laws, Rules, and Regulations
PERMISSION IS HEREBY GRANTED TO
City of Durham
Durham County
FOR THE
construction and operation of a residuals management program for the City of Durham and consisting of
28 drying beds and nine windrow composting pad areas; for the distribution of Class A residuals generated
by the approved facilities listed in Attachment A with no discharge of wastes to surface waters, pursuant to
the application received August 31, 2018, and subsequent additional information received by the Division
of Water Resources, and in conformity with the project plans, specifications, and other supporting data
subsequently filed and approved by the Department of Environmental Quality and considered a part of this
permit. The use and disposal of residuals are regulated under Title 40 Code of Federal Regulations Part
503. This permit does not exempt the Permittee from complying with the federal regulations.
This permit shall be effective from the date of issuance until September 30, 2024, and shall be subject to
the following specified conditions and limitations:
I. SCHEDULES
No later than six months prior to the expiration of this permit, the Permittee shall request renewal of
this permit on official Division forms. Upon receipt of the request, the Division will review the
adequacy of the facilities described therein, and if warranted, will renew the permit for such period of
time and under such conditions and limitations as it may deem appropriate. Please note Rule 15A
NCAC 02T .0105(d) requires an updated site map to be submitted with the permit renewal application.
[15A NCAC 02T .0108(b)(2), 02T .0105(d), 02T .0109]
II. PERFORMANCE STANDARDS
The subject residuals management program shall be effectively maintained and operated at all times so
there is no discharge to surface waters, nor any contravention of groundwater or surface water
standards. In the event the facilities fail to perform satisfactorily, including the creation of prolonged
nuisance conditions due to improper operation and maintenance, the Permittee shall immediately cease
distribution of residuals, contact the Raleigh Regional Office supervisor, and take any immediate
corrective actions. [G.S. 143-215.1]
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2. This permit shall not relieve the Permittee of responsibility for damages to groundwater or surface
water resulting from the operation of this residuals management program. [15A NCAC 02B .0200,
02L .0100]
Only residuals generated by the facilities listed in Attachment A are approved for distribution in
accordance with this permit. [G.S. 143-215.1]
4. Pollutant concentrations in residuals distributed or applied to any land application site shall not exceed
the following Ceiling Concentrations or Monthly Average Concentrations (i.e., dry weight basis):
Parameter
Ceiling Concentration
(milligrams per kilogram)
Monthly Average
Concentration
(milligrams per kilogram)
Arsenic
75
41
Cadmium
85
39
Copper
4,300
1,500
Lead
840
300
Mercury
57
17
Molybdenum
75
n/a
Nickel
420
420
Selenium
100
100
Zinc
7,500
2,800
[15A NCAC 02T. 1105]
5. Residuals that are distributed shall meet Class A pathogen reduction requirements in 15A NCAC 02T
.1106 (a) and (b). Exceptions to this requirement shall be specified in Attachment A. [ 15A NCAC 02T
.1106]
6. Biological residuals (i.e. residuals generated during the treatment of domestic or animal processing
wastewater, or the biological treatment of industrial wastewater, and as identified in Attachment A)
that are distributed shall meet one of the vector attraction reduction alternatives in 15A NCAC 02T
.1107(a). Exceptions to this requirement shall be specified in Attachment A. [ 15A NCAC 02T .1107]
7. Setbacks for treatment and storage facilities shall be as follows:
Setback Description
Setback
feet
Habitable residence or place of public assembly under separate ownership or not to
100
be maintained as part of the project site
Property lines
50
Private or public water supply
100
Surface waters (streams — intermittent and perennial, perennial waterbodies, and
50
wetlands)
Wells with exception to monitoring wells
100
[15A NCAC 02T. 1108]
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8. Setbacks for Class A land applied bulk residuals shall be as follows:
Setback by residual type
Setback Description
(feet)
Liquid
Cake'
Private or public water supply
100
100
Surface waters (streams — intermittent and perennial,
100 25
perennial waterbodies, and wetlands
Surface water diversions (ephemeral streams,
25
0
waterways, ditches
Groundwater lowering ditches (where the bottom of
25
0
the ditch intersects the SHWT)
Wells with exception to monitoring wells
100
25
100
Bedrock outcrops
0
' Unless otherwise noted in Attachment A, "cake" residuals are those that have greater than 15%
solids by weight and can be stacked without flowing, as well as can be handled, transported and
spread as a solid (e.g., using a backhoe, front end loader, slinger spreader, broadcast spreader or
other equipment designed for handling solid materials) without leaving any significant liquid
fraction behind.
[15A NCAC 02T .1108]
9. Bulk residuals and other sources of Plant Available Nitrogen (PAN) shall not be applied in exceedance
of agronomic rates. Appropriate agronomic rates shall be calculated using expected nitrogen
requirements based on the determined Realistic Yield Expectations (RYE) using any of the following
methods:
a. Division's pre -approved site specific historical data for specific crop or soil types by calculating
the mean of the best three yields of the last five consecutive crop harvests for each field.
b. North Carolina Historical Data for specific crop and soil types as provided by North Carolina State
University Department of Soil Science (hW.//nutrients.soil.nesu.edu/vields/index.phg). A copy
shall be kept on file and reprinted every five years in accordance with Condition IV.6.
c. If the RYE cannot be determined using methods (a) or (b) above, the Permittee may use the RYE
and appropriate nutrient application rates reported in any of the following documents:
i. Crop management plan as outlined by the local Cooperative Extension Office, the North
Carolina Department of Agriculture and Consumer Services, the Natural Resource
Conservation Service, or other agronomist.
ii. Waste Utilization Plan as outlined by the Senate Bill 1217 Interagency Group - Guidance
Document: Chapter 1
(htt //www.nca�r.Gov/SWC/tech/documents/9th_Guidance_ Doc_100109.y)df).
iii. Certified Nutrient Management Plan as outlined by the Natural Resources Conservation
Services (MRCS). These plans must meet the USDA-NRCS 590 Nutrient Management
Standards (tit,://ft-fc.sc.egov. ssda.gov/NHQ/practice-standards/standards/590.p
d. If the RYE and appropriate nutrient application rates cannot be determined, the Permittee shall
contact the Division to determine necessary action.
[15A NCAC 02T : 1 109(b)(1)(k)]
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10. The Permittee shall not distribute Class A residuals that have a sodium adsorption ratio (SAR) of 10 or
higher without prior written Division approval. The Permittee may seek approval by demonstrating
that the entity accepting the residuals is: aware of the effects of a high SAR content; has agreed on
proper residual application rates; and has agreed to operational considerations to ensure that the high
SAR content will not adversely impact the receiving sites. Recommendations regarding sodium
application rate, soil amendments (e.g., gypsum, etc.) or a mechanism for maintaining site integrity and
conditions conducive to crop growth, can be obtained from the local Cooperative Extension Office, the
Department of Agriculture and Consumer Services, the Natural Resource Conservation Service, a North
Carolina Licensed Soil Scientist, or an agronomist. [15A NCAC 02T .0108(b)(1)]
III. OPERATION AND MAINTENANCE REQUIREMENTS
The residuals management program shall be properly maintained and operated at all times. The
program shall be effectively maintained and operated as a non -discharge system to prevent any
contravention of surface water or groundwater standards. [ 15A NCAC 02T . 1110]
2. The Permittee shall maintain an approved Operation and Maintenance Plan (O&M Plan) Modifications
to the O&M Plan shall be approved by the Division prior to utilization of the new plan. The O&M Plan,
at the minimum, shall include:
a. Operational functions;
b. Maintenance schedules;
c. Safety measures;
d. Spill response plan;
e. Inspection plan including the following information:
i. Names and/or titles of personnel responsible for conducting the inspections;
ii. Frequency and location of inspections, including those to be conducted by the ORC, and
procedures to assure that the selected location(s) and inspection frequency are representative
of the residuals management program;
iii. Detailed description of inspection procedures including record keeping and actions to be taken
by the inspector in the event that noncompliance is observed pursuant to the noncompliance
notification requirements under the monitoring and reporting section of the permit;
f. Sampling and monitoring plan including the following information:
i. Names and/or titles of personnel responsible for conducting the sampling and monitoring;
ii. Detailed description of monitoring procedures including parameters to be monitored;
iii. Sampling frequency and procedures to assure that representative samples are being collected.
Fluctuation in temperature, flow, and other operating conditions can affect the quality of the
residuals gathered during a particular sampling event. The sampling plan shall account for any
foreseen fluctuations in residuals quality and indicate the most limiting times for residuals to
meet pathogen and vector attraction reduction requirements (e.g. facilities that distribute
multiple times per year but have an annual sampling frequency, may need to sample during
winter months when pathogen reduction is most likely to be negatively affected by cold
temperatures).
[ 15A NCAC 02T .1100]
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3. Upon the Water Pollution Control System Operators Certification Commission's (WPCSOCC)
classification of the facility, the Permittee shall designate and employ a certified operator in responsible
charge (ORC) and one or more certified operators as back-up ORCs in accordance with 15A NCAC
08G .0201. The ORC or his back-up shall visit the facilities in accordance with 15A NCAC 08G. 0204,
or as specified in the most recently approved O&M plan (i.e., see Condition III.2.), and shall comply
with all other conditions of 15A NCAC 08G. 0204. For more information regarding classification and
designation requirements, please contact the Division of Water Resources' Protection and Enforcement
Branch at [phone]. At the time of this permit issuance, a certified ORC is not required for the
subject Distribution of Class A Residuals program. [15A NCAC 02T .0117]
4. When the Permittee land applies bulk residuals, a copy of this permit and a copy of O&M Plan shall be
maintained at the land application sites during land application activities. [15A NCAC 02T
.0108(b)(1)]
When the Permittee transports or land applies bulk residuals, the spill control provisions shall be
maintained in all residuals transport and application vehicles. [ 15A NCAC 02T .1110]
6. When the Permittee land applies bulk residuals, adequate measures shall be taken to prevent wind
erosion and surface runoff from conveying residuals from the land application sites onto adjacent
properties or into surface waters. [G.S. 143-215.11
7. When the Permittee land applies bulk residuals, a suitable vegetative cover shall be maintained on land
application sites onto which residuals are applied, or application shall be in accordance with the crop
management plan outlined by the local Cooperative Extension Office, the Department of Agriculture
and Consumer Services, the Natural Resource Conservation Service, or an agronomist and as approved
by the Division. [15A NCAC 02T .1109(b)(1)]
8. Bulk residuals shall not be land applied under the following conditions:
a. If the residuals are likely to adversely affect a threatened or endangered species listed under section
4 of the Endangered Species Act or its designated critical habitat;
b. If the application causes prolonged nuisance conditions;
c. If the land fails to assimilate the bulk residuals or the application causes the contravention of surface
water or groundwater standards;
d. If the land is flooded, frozen or snow-covered, or is otherwise in a condition such that runoff of the
residuals would occur;
e. Within the 100-year flood elevation, unless the bulk residuals are injected or incorporated within a
24-hour period following a residuals land application event;
f. During a measurable precipitation event (i.e., greater than 0.01 inch per hour), or within 24 hours
following a rainfall event of 0.5 inches or greater in a 24-hour period;
g. If the slope is greater than 10% for surface applied liquid residuals, or if the slope is greater than
18% for injected or incorporated bulk liquid residuals;
h. If the land does not have an established vegetative cover unless the residuals are incorporated or
injected within a 24-hour period following a residuals land application event. Any field that is in a
USDA no -till program shall be exempted from meeting this vegetative cover requirement;
i. If the vertical separation between the seasonal high water table and the depth of residuals
application is less than one foot;
j. If the vertical separation of bedrock and the depth of residuals application is less than one foot;
k. Application exceeds agronomic rates.
[15A NCAC 02T. 1109]
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9. The Permittee shall notify all third -party entities receiving bulk distributed Class A residuals that land
application activities occurring on the third-party's property shall meet the requirements in 15A NCAC
02T .1108(b)(1) and 02T .1109(b) (i.e., Conditions I1.8. and II1.8., respectively). [15A NCAC 02T
.1103(4)]
10. All residuals shall be adequately stored to prevent untreated leachate runoff. The finished product may
be placed on a concrete pad, placed under shelter or physically covered until it is distributed to a third -
party entity. If bulk residuals are to be applied, the residuals may be staged at the application site for
up to 30 days for biological residuals, and 60 days for non -biological residuals. The residuals may be
stored indefinitely at the City of Durham's Type 1 Compost Facility at 2115 East Club Blvd. in Durham
if it is kept separate from the Type 1 compost. If any other alternate storage site is used, approval must
be obtained from the Division. [15A NCAC 02T .0108(b)(1)]
11. A label shall be affixed to the bag or other container in which residuals are sold or given away for land
application, or an information sheet shall be provided to the person who receives Class A residuals. At
a minimum, the label or information sheet shall contain the following:
a. The name and address of the person who prepared the residuals;
b. A statement that residual land application is prohibited except in accordance with the instructions
on the label or information sheet;
c. A statement identifying that this material shall be prevented from entering any public or private
water supply source (including wells) and any surface water (e.g., stream, lake, river, wetland, etc.);
d. A statement that the residuals shall be applied at agronomic rates and recommended rates for its
intended use.
[15A NCAC 02T .I 109(a)]
12. The Permittee shall not distribute bulk residuals to any person or entity known to be applying residuals
contrary to the conditions of this permit. The Permittee shall report to the Raleigh Regional Office as
per reporting conditions under Condition IV.8. any person or entity known to be applying residuals
contrary to the condition of this permit. [15A NCAC 02T .I 103(a)]
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IV. MONITORING AND REPORTING REQUIREMENTS
1. Any Division -required monitoring (including groundwater, plant tissue, soil and surface water
analyses) necessary to ensure groundwater and surface water protection shall be established, and an
acceptable sample reporting schedule shall be followed. [ 15A NCAC 02T .0108(c)]
2. Residuals shall be analyzed to demonstrate they are non -hazardous under the Resource Conservation
and Recovery Act (RCRA). Residuals that tests or is classified as a hazardous or toxic waste under 40
CFR Part 261 shall not be used or disposed under this permit. The analyses [corrosivity, ignitability,
reactivity, and toxicity characteristic leaching procedure (TCLP)l shall be performed at the
frequency specified in Attachment A, and the Permittee shall maintain these results for a minimum of
five years. Any exceptions from the requirements in this condition shall be specified in Attachment A.
The TCLP analysis shall include the following parameters (the regulatory level in milligrams per liter
is in parentheses):
Arsenic (5.0)
l 1,4-Dichlorobenzene (7.5)
Nitrobenzene (2.0)
Barium (100.0)
1,2-Dichloroethane (0.5)
Pentachlorophenol (100.0)
Benzene (0.5)
1,1-Dichloroethylene (0.7)
Pyridine (5.0)
Cadmium (1.0)
2,4-Dinitrotoluene (0.13)
Selenium (1.0)
Carbon tetrachloride (0.5)
Endrin (0.02)
Silver (5.0)
Chlordane (0.03)
Hexachlorobenzene (0.13)
Tetrachloroethylene (0.7)
Chlorobenzene (100.0)
Heptachlor (and its hydroxide)
0.008)
Toxaphene (0.5)
Chloroform (6.0)
Hexachloro-1,3-butadiene (0.5)
Trichloroethylene (0.5)
Chromium (5.0)
Hexachloroethane (3.0)
2,4,5-Trichlorophenol (400.0)
m-Cresol (200.0)
Lead (5.0)
2,4,6-Trichlorophenol (2.0)
o-Cresol (200.0)
Lindane (0.4)
2,4,5-TP (Silvex) (1.0)
p-Cresol (200.0)
Mercury (0.2)
Vinyl chloride (0.2)
Cresol (200.0)
Methoxychlor (10.0)
2,4-D (10.0)
Methyl ethyl ketone (200.0)
Once the residuals have been monitored for two years at the frequency specified in Attachment A, the
Permittee may submit a permit modification request to reduce the frequency of this monitoring
requirement. In no case shall the monitoring frequency be less than once per permit cycle.
[15A NCAC 13A .0102(b), 02T .1101, 02T .1105]
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3. An analysis shall be conducted on the residuals from each source generating facility at the frequency
specified in Attachment A, and the Permittee shall maintain the results for a minimum of five years.
The analysis shall include the following parameters:
Aluminum
Mercury
Potassium
Ammonia -Nitrogen
Molybdenum
Selenium
Arsenic
Nickel
Sodium
Cadmium
Nitrate -Nitrite Nitrogen
Sodium Adsorption Ratio
(SAR)
Calcium
Percent Total Solids
TKN
Copper
pH
Zinc
Lead
Phosphorus
Magnesium
Plant Available Nitrogen
(by calculation)
[ 15A NCAC 02T. I 10 1]
4. Residuals shall be monitored for compliance with pathogen and vector attraction reduction
requirements at the frequency specified in Attachment A, and at the time indicated in the sampling and
monitoring sections of the approved O&M plan. The required data shall be specific to the stabilization
process utilized, and sufficient to demonstrate compliance with the Class A pathogen reduction
requirements in 15A NCAC 02T .1106 (a) and (b), and one vector attraction reduction requirement in
15A NCAC 02T .1107 (a) shall be met. Any exceptions from the requirements in this condition shall
be specified in Attachment A. [15A NCAC 02T .1106, 02T .1107, 02T .1111(c)]
5. Laboratory parameter analyses shall be performed on the residuals as they are distributed, and shall be
in accordance with the monitoring requirements in 15A NCAC 02B .0505. [15A NCAC 02B .0505]
6. The Permittee shall maintain records tracking all bulk residual distribution or land application events
performed by the Permittee. At a minimum, these records shall include the following:
a. Source of residuals;
b. Date of distribution/land application;
c. Name and address of recipient of residuals;
d. Volume of residuals distributed to each recipient;
e. Intended use of residuals;
f. If land application events performed by the Permittee - Nitrogen Application Rate based on RYEs
(if using data obtained from the North Carolina State University Department of Soil Science
Website, the printout page shall be kept on file and reprinted every five years).
[I 5A NCAC 02T .0108(a)]
Three copies of an annual report shall be submitted on or before March 1 ". The annual report shall
meet the requirements described in the Instructions for Residuals Application Annual Reporting Forms.
Instructions for reporting and annual report forms are available at
httD://deo.nc. Qov/about/divisions/water-resources/water-resources-permits/wastewater-branch/non-
discharge-permitting-unit/reporting-forms, or can be obtained by contacting the Non -Discharge
Permitting Unit directly. The annual report shall be submitted to the following address:
Division of Water Resources
Information Processing Unit
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
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[15A NCAC 02T .1111(a)]
8. Noncompliance Notification
The Permittee shall report by telephone to the Raleigh Regional Office, telephone number (919) 791-
4200, as soon as possible, but in no case more than 24 hours or on the next working day following the
occurrence or first knowledge of the occurrence of any of the following:
a. Distribution of residuals abnormal in quantity or characteristic.
b. Any failure of the distribution program resulting in a release of material to surface waters.
c. Any time self -monitoring indicates the facility has gone out of compliance with its permit
limitations.
d. Any process unit failure, due to known or unknown reasons, rendering the facility incapable of
adequate residual treatment.
e. Any spill or discharge from a vehicle or piping system during residuals transportation.
Any emergency requiring immediate reporting (e.g., discharges to surface waters, imminent failure of
a storage structure, etc.) outside normal business hours shall be reported to the Division's Emergency
Response personnel at telephone number [phone], [phone], or [phone].Persons
reporting such occurrences by telephone shall also file a written report in letter form within five days
following first knowledge of the occurrence. This report shall outline the actions taken or proposed to
betaken to ensure that the problem does not recur. [15A NCAC 02T .0105(l), 02T .0108(b)(1)]
V. INSPECTIONS
1. The Permittee shall provide adequate inspection and maintenance to ensure proper operation of the
subject facilities and shall be in accordance with the approved O&M Plan. [15A NCAC 02T .0108(b)]
Prior to each bulk residuals distribution event, the Permittee or his designee shall inspect the residuals
storage, transport and distribution facilities to identify malfunctions, facility deterioration and operator
errors that could result in discharges to the environment, a threat to human health or a public nuisance.
The Permittee shall maintain an inspection log that includes, at a minimum, the date and time of
inspection, observations made, and any maintenance, repairs, or corrective actions taken. The Permittee
shall maintain this inspection log for a period of five years from the date of inspection, and this log
shall be made available to the Division upon request. [15A NCAC 02T .0108(b)]
3. Any duly authorized Division representative may, upon presentation of credentials, enter and inspect
any property, premises or place on or related to the distribution sites or facilities permitted herein at
any reasonable time for the purpose of determining compliance with this permit; may inspect or copy
any records required to be maintained under the terms and conditions of this permit; and may collect
groundwater, surface water or leachate samples. [G.S. 143-215.3(a)(2)]
VI. GENERAL CONDITIONS
1. Failure to comply with the conditions and limitations contained herein may subject the Permittee to an
enforcement action by the Division in accordance with North Carolina General Statutes 143-215.6A to
143-215.6C. [G.S. 143-215.6A to 143-215.6C]
2. This permit shall become voidable if the residuals distribution events are not carried out in accordance
with the conditions of this permit. [ 15A NCAC 02T A 110]
3. This permit is effective only with respect to the nature and volume of residuals described in the permit
application and other supporting documentation. [G.S. 143-215.1]
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4. The issuance of this permit does not exempt the Permittee from complying with any and all statutes,
rules, regulations, or ordinances, which may be imposed by other jurisdictional government agencies
(e.g., local, state, and federal). Of particular concern to the Division are applicable river buffer rules in
15A NCAC 02B .0200; erosion and sedimentation control requirements in 15A NCAC Chapter 4 and
under the Division's General Permit NCG010000; any requirements pertaining to wetlands under 15A
NCAC 02B .0200 and 02H .0500; and documentation of compliance with Article 21 Part 6 of Chapter
143 of the General Statutes. [ 15A NCAC 02T .0105(c)(6)]
In the event the residuals program changes ownership or the Permittee changes his name, a formal
permit modification request shall be submitted to the Division. This request shall be made on official
Division forms, and shall include appropriate documentation from the parties involved and other
supporting documentation as necessary. The Permittee of record shall remain fully responsible for
maintaining and operating the residuals program permitted herein until a permit is issued to the new
owner. [ 15A NCAC 02T .0104]
6. This permit is subject to revocation or unilateral modification upon 60-day notice from the Division
Director, in whole or part for the requirements listed in 15A NCAC 02T .0110. [ 15A NCAC 02T .0110]
7. Unless the Division Director grants a variance, expansion of the permitted residuals program contained
herein shall not be granted if the Permittee exemplifies any of the criteria in 15A NCAC 02T .0120(b).
[15A NCAC 02T .0120]
8. The Permittee shall pay the annual fee within 30 days after being billed by the Division. Failure to pay
the annual fee accordingly shall be cause for the Division to revoke this permit. [15A NCAC 02T
.0105(e)(3)]
Permit issued this the 22" day of January 2019
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
g--mda Culpepper, Director
Division of Water Resources
By Authority of the Environmental Management Commission
Permit Number WQ0040265
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ATTACHMENT A — Approved Residual Sources
City of Durham
Residuals Source -Generating Facility
Certification Date: January 22, 2019
Permit Number: WQ0040265 Version: 1.0
Permit
Biological
MaximumMonitoring
Frequency for Non-
Monitoring Frequency for Metals
Owner
Facility
County
Number
Residuals
Dry Tons
hazardous Determination 2
and Nutrients 3
Durham
NCO023841
Yes
per Year'
4,212
Annually
City of Durham
North Durham WRF
Once per permit cycle
City of Durham
South Durham WRF
Durham
NCO047597
Yes
3,580
Annually
Once per permit cycle
Total
Class A Residuals Product Generated for Distribution
Monitoring
Monitoring
Monitoring
Permit
Biological
Maximum
Frequency for
Frequency for
Frequency for
Approved
Owner
Facility Name
County
Number
Residuals
.-Dry Tons
Non -hazardous
Metals and
Pathogen &
Mineralization
Per Year
Determination 2
Nutrients 3
Vector Attraction
Rate
Reductions °
City of Durham
North Durham Composting
Durham
WQ0040265
Yes
20,000
Annually
See Table Below
See Table Below
0.1
Facility
1. Maximum Dry Tons per Year for residuals source is the amount of residuals approved for composting. Maximum Dry Tons per Year for Class A residuals is the amount of residuals product
approved for distribution from the permitted facility.
2. Analyses to demonstrate that residuals are non -hazardous (i.e., TCLP, ignitability, reactivity, and corrosivity) as stipulated under permit Condition IV.2.
3. Testing of metals and nutrients as stipulated under permit Condition IV.3.
4. Analyses of pathogen and vector attraction reductions as stipulated under permit Condition IVA
5. Monitoring frequencies are based on the actual dry tons applied per year using the table below, unless specified above.
Dry Tons Distributed
short tons per ear
Monitoring Frequency
(Established in 40 CFR 503 and 15A NCAC 02T .1111)
<319
1/Year
=>319 - <1,650
1/ Quarter (4 times per year)
=>1,650 - <16,500
1/60 Days 6 times per ear)
=>16,500
1/month (12 times per year
6. Class A residuals are exempt from meeting the vector attraction reduction requirements in Condition IVA, provided they are not mixed with residuals that have been generated during the treatment
of domestic wastewater, the treatment of animal processing wastewater, or the biological treatment of industrial wastewater. The Class A residuals must be treated and processed in a manner as to
not meet the definition of `Biological Residuals" as defined in 15A NCAC 02T .1102(6).
WQ0040265 Version 1.0 Attachment A Page 1 of 1