NC0020354_Final Permit_20210505

DocuSign Envelope ID: 3D7E3FEB-A3FF-4FF6-A1AD-F59B27F0D696
ROY COOPER
Governor
DIONNE DELLI-GATTI
Secretary
S. DANIEL SMITH
Director
Mr. John Poteat
Public Works and Utilities Director
Town of Pittsboro
P.O. Box 759
Pittsboro, North Carolina 27312
Dear Mr. Poteat:
NORTH CAROLINA
Environmental Quality
May 5, 2021
Subject: Final NPDES Permit Renewal
Permit NC0020354
Pittsboro WWTP/CPWRC
Chatham County
Grade IV Biological WPCS
SIC Code 4952
Division personnel have reviewed and approved your application for renewal of the subject permit.
Accordingly, we are forwarding the attached NPDES permit. This permit is issued pursuant to the
requirements of North Carolina General Statute 143-215.1 and the Memorandum of Agreement
between North Carolina and the U.S. Environmental Protection Agency dated October 15, 2007
(or as subsequently amended).
Please note that the receiving stream is listed as impaired for benthos on the North Carolina 2018
303(d) Impaired Waters List. Addressing impaired waters is a high priority with the Division, and
instream data will continue to be evaluated. If there is noncompliance with permitted effluent
limits and stream impairment can be attributed to your facility, then mitigative measures may be
required.
Comments were received internally from the Division's Basin Planning Branch on April 19, 2021
that can be found attached to this letter along with a detailed response. Per discussions with the
Basin Planning Branch and the Ecosystems Branch, the Division encourages you and the Upper
Cape Fear River Basin Association to reactivate or establish monitoring stations nearby up -and -
downstream of the discharge. Additionally, the Division encourages the addition of total nitrogen,
total phosphorous, ammonia, total suspended solids, turbidity and chlorophyll -a to the suite of
parameters sampled for at the Coalition's monitoring stations. The additional instream monitoring
data would help better characterize pollutant loading attributable to development versus the
wastewater treatment plant, and would further inform the Division in making decisions with regard
to permit requirements.
The following changes were made to the draft permit sent to you on March 18, 2021:
• As the Monitoring Coalition will not be conducting hardness sampling on behalf of the
Permittee, the footnote language in Sections A.(4.) and A.(5.) has been updated.
NORTH1:t E
Deo•mnmrt or EmlmemonhI aeeuq
North Carolina Department of Environmental Quality 1 Division of Water Resources
512 North Salisbury Street 11617 Mail Service Center I Raleigh, North Carolina 27699-1617
919.707.9000

DocuSign Envelope ID: 3D7E3FEB-A3FF-4FF6-AI AD-F59B27F0D696
The final permit maintains the following significant changes identified in the letter sent on
March 18, 2021:
• Chatham Park Investors LLC has been added as a co-permittee, and CPWRC has been
added to the permit, along with associated limits tables and special conditions.
• To accommodate for the CPWRC's discharge into Robeson Creek, Outfall 001 has been
split into Outfalls 001A, to which the Pittsboro WWTP will report its discharge, and Outfall
001B, to which the CPWRC will report its discharge [See A.(1.) and A.(2.)].
• To ensure the Robeson Creek TP TMDL is maintained with the addition of the CPWRC
and the combined flow does not exceed 1.249 MGD, a combined outfall CO1 (001A +
001B) has been added to the permit [See A. (4.)].
• As Outfall 001 has been divided into Outfalls 001A and 001B, Combined Outfall CO2 now
combines Outfalls 001A, 001B and 002 [See A.(5.)].
• Per 15A NCAC 08G .0302, the Pittsboro WWTP facility class has been changed to Grade
IV due to the nutrient limits in the permit and the rule conditions. To ensure concurrent
sampling, the monitoring frequency of a Grade IV facility has also been applied to the
Chatham Park Water Recovery Center (CPWRC). This does not impact the grade of the
CPWRC.
• As the Pittsboro WWTP facility class has been updated, monitoring frequencies for BOD,
ammonia, TSS, conductivity, TRC, pH and dissolved oxygen have been revised to reflect
a Grade IV facility [See A.(1.) A.(2.) and A.(3.)].
• To ensure representative sampling, effluent sample locations have been specified for
dissolved oxygen, fecal coliform and pH [See A.(1.), A.(2.) and A.(3.)].
• Per the results of instream waste concentration (IWC)-based calculations for ammonia -
nitrogen, ammonia nitrogen limits have been revised for the Pittsboro WWTP [See
A.(2.)].
• Based on the reasonable potential analysis (RPA) showing no reasonable potential to
violate state water quality standards at Outfall 001, the monitoring requirements for total
nickel and total zinc have been removed from the permit [See A.(1.)].
• Based on the reasonable potential analysis (RPA) showing reasonable potential to violate
state water quality standards at Outfall 001, total copper and nitrate limits have been
added to the permit and along with monthly monitoring [See A.(1.), A.(2.) and A.(3.)].
• To provide an opportunity for the Town to develop a plan to assess sources of total
copper and nitrate, and to implement treatment for ammonia in order to come in
compliance with the limits in Section A.(2.), a 3-year schedule of compliance has been
added to the permit [See Special Condition A. (12.) Schedule of Compliance for Total
Copper, Ammonia and Nitrate Limitations (Outfall 001A)].
• Based on the reasonable potential analysis (RPA) predicting a maximum effluent total
dissolved solids concentration that is greater than half of the allowable discharge
concentration based on state water quality standards at Outfall 001, quarterly monitoring
for total dissolved solids has been added to the permit [See A.(1), A.(2) and A.(3.)].
• Based on the reasonable potential analysis (RPA) showing no reasonable potential to
violate state water quality standards at Outfall 002, the monitoring requirements for total
nickel, total copper and total zinc have been removed from the permit [See A.(4.)].
• The Division is implementing dissolved metals standards in all permits, per the 2016
revisions to State water quality standards. As such, the NPDES Permitting Unit will need
site -specific effluent hardness data and instream hardness data, upstream of the discharge,
Page 2 of 4

DocuSign Envelope ID: 3D7E3FEB-A3FF-4FF6-AI AD-F59B27F0D696
for each facility monitoring these metals in order to calculate permit limitations. Effluent
hardness and instream hardness sampling, upstream of the discharge, have been added to
the permit at a monitoring frequency of quarterly.
• The Town of Pittsboro reported Total Lead and Total Silver at less than detection, with
detection levels < 10.0 µg/L in the 2019 Effluent Pollutant Scan. The Town's allowable
discharge concentrations are 8.86 µg/L and 0.062 µg/L for Total Lead and Total Silver,
respectively. DWR' s laboratory identifies the target Practical Quantification Limits (PQLs)
for Total Lead and Total Silver as 2.0 µg/L, and 1.0 µg/L, respectively. 15A NCAC 2B
.0505 (e) (4) requires that all test procedures must produce detection and reporting levels
that are below the permit discharge requirements and all data generated must be reported
to the approved detection level or lower reporting level of the procedure. If no approved
methods are capable of achieving a detection level below the permit discharge requirement
(or allowable discharge concentration) the method with the lowest detection level must be
used. Both co-permittees shall use sufficiently sensitive test methods for all pollutants,
including when performing Effluent Pollutant Scans.
• Some of the wording has changed in Special Condition A. (10.), Chronic Toxicity Permit
Limit, please review each paragraph carefully.
• Special Condition A. (11.) has been modified to the conditional statement, "Upon
expansion of design flow above 1.0 MGD, establishment of a pretreatment program, or
connection to the Big Buffalo WWTP, whichever happens first, the Permittee shall
perform a total of three (3) Effluent Pollutant Scans for all parameters listed below. Once
this has occurred, the tests shall be performed in three (3) consecutive years." In addition,
at the end of the Special Condition, 2nd species Toxicity Testing Requirements for
municipal permit renewals per Federal Regulations [40 CFR 122.21(j)(5)] have been
added.
• A notation was made concerning the Electronic Reporting Rule — NPDES Electronic
Reporting Rule — Phase 2 Extension. EPA extended the Phase 2 deadline to December
21, 2025.
• Parameter codes have been added to the Effluent Limitations and Monitoring
Requirements [ See A.(1.) — A.(6.)].
• Regulatory citations have been added to the permit.
If any parts, measurement frequencies or sampling requirements contained in this permit are
unacceptable to you, you have the right to an adjudicatory hearing upon written request within
thirty (30) days following receipt of this letter. This request must 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 (6714 Mail Service Center, Raleigh, North Carolina 27699-
6714). Unless such demand is made, this decision shall be final and binding.
The NPDES standard conditions (Parts II, III, and IV) are the same as in your current permit
except that agency and division names have been updated. The latest version is available at
https://bit.ly/3k5NFaL and can be viewed online or downloaded as a PDF file.
Please note that this permit is not transferable except after notice to the Division. The Division
may require modification or revocation and reissuance of the permit. This permit does not affect
the legal requirements to obtain other permits which may be required by the Division of Water
Resources or any other Federal, State, or Local governmental regulations.
Page 3 of 4

DocuSign Envelope ID: 3D7E3FEB-A3FF-4FF6-AI AD-F59B27F0D696
If you have any questions concerning this permit, please contact Nick Coco at [phone] or
via email at [e-mail].
Sincerely,
DocuSignel�d by: %ttol, kb.'' `
C464531431644FE...
for S. Daniel Smith, Director
Division of Water Resources, NCDEQ
Hardcopy: NPDES Files
Central Files
Ecopy: US EPA Region 4
DWR/Raleigh Regional Office / Water Quality
DWR/Ecosystems Branch/Mark Vander Borgh
DWR/Aquatic Toxicology Branch/Cindy Moore and Zach Thomas
DWR/Basin Planning Branch/Nora Deamer
DWR/Public Water Supply /Shawn Guyer
Consultant/Engineer/Becky Smith
Consultant/Engineer/Tim Baldwin
Page 4 of 4

DocuSign Envelope ID: 3D7E3FEB-A3FF-4FF6-A1AD-F59B27F0D696
ROY COOPER
Governor
DIONNE DELLI-GATTI
Secretary
S. DANIEL SMITH
Director
Mr. Timothy R. Smith, Vice President
Chatham Park Investors LLC
105 Weston Estates Way
Cary, North Carolina 27513
Dear Mr. Smith:
NORTH CAROLINA
Environmental Quality
May 5, 2021
Subject: Final NPDES Permit Renewal
Permit NC0020354
Pittsboro WWTP/CPWRC
Chatham County
Grade III Biological WPCS
SIC Code 4952
Division personnel have reviewed and approved your application for renewal of the subject permit.
Accordingly, we are forwarding the attached NPDES permit. This permit is issued pursuant to the
requirements of North Carolina General Statute 143-215.1 and the Memorandum of Agreement
between North Carolina and the U.S. Environmental Protection Agency dated October 15, 2007
(or as subsequently amended).
Please note that the receiving stream is listed as impaired for benthos on the North Carolina 2018
303(d) Impaired Waters List. Addressing impaired waters is a high priority with the Division, and
instream data will continue to be evaluated. If there is noncompliance with permitted effluent
limits and stream impairment can be attributed to your facility, then mitigative measures may be
required.
Comments were received internally from the Division's Basin Planning Branch on April 19, 2021
that can be found attached to this letter along with a detailed response. Per discussions with the
Basin Planning Branch and the Ecosystems Branch, the Division encourages you and the Upper
Cape Fear River Basin Association to reactivate or establish monitoring stations nearby up -and -
downstream of the discharge. Additionally, the Division encourages the addition of total nitrogen,
total phosphorous, ammonia, total suspended solids, turbidity and chlorophyll -a to the suite of
parameters sampled for at the Coalition' s monitoring stations. The additional instream monitoring
data would help better characterize pollutant loading attributable to development versus the
wastewater treatment plant, and would further inform the Division in making decisions with regard
to permit requirements.
The following changes were made to the draft permit sent to you on March 18, 2021:
• As the Monitoring Coalition will not be conducting hardness sampling on behalf of the
Permittee, the footnote language in Sections A.(4.) and A.(5.) has been updated.
NORTH1:t E
Deo•mnmrt or EmlmemonhW aeeuq
North Carolina Department of Environmental Quality 1 Division of Water Resources
512 North Salisbury Street 11617 Mail Service Center I Raleigh, North Carolina 27699-1617
919.707.9000

DocuSign Envelope ID: 3D7E3FEB-A3FF-4FF6-AI AD-F59B27F0D696
The final permit maintains the following significant changes identified in the letter sent on
March 18, 2021:
• Chatham Park Investors LLC has been added as a co-permittee, and CPWRC has been
added to the permit, along with associated limits tables and special conditions.
• To accommodate for the CPWRC's discharge into Robeson Creek, Outfall 001 has been
split into Outfalls 001A, to which the Pittsboro WWTP will report its discharge, and Outfall
001B, to which the CPWRC will report its discharge [See A.(1.) and A.(2.)].
• To ensure the Robeson Creek TP TMDL is maintained with the addition of the CPWRC
and the combined flow does not exceed 1.249 MGD, a combined outfall C01 (001A +
001B) has been added to the permit [See A. (4.)].
• As Outfall 001 has been divided into Outfalls 001A and 001B, Combined Outfall CO2 now
combines Outfalls 001A, 001B and 002 [See A.(5.)].
• Per 15A NCAC 08G .0302, the Pittsboro WWTP facility class has been changed to Grade
IV due to the nutrient limits in the permit and the rule conditions. To ensure concurrent
sampling, the monitoring frequency of a Grade IV facility has also been applied to the
Chatham Park Water Recovery Center (CPWRC). This does not impact the grade of the
CPWRC.
• As the Pittsboro WWTP facility class has been updated, monitoring frequencies for BOD,
ammonia, TSS, conductivity, TRC, pH and dissolved oxygen have been revised to reflect
a Grade IV facility [See A.(1.) A.(2.) and A.(3.)].
• To ensure representative sampling, effluent sample locations have been specified for
dissolved oxygen, fecal coliform and pH [See A.(1.), A.(2.) and A.(3.)].
• Per the results of instream waste concentration (IWC)-based calculations for ammonia -
nitrogen, ammonia nitrogen limits have been revised for the Pittsboro WWTP [See
A.(2.)].
• Based on the reasonable potential analysis (RPA) showing no reasonable potential to
violate state water quality standards at Outfall 001, the monitoring requirements for total
nickel and total zinc have been removed from the permit [See A.(1.)].
• Based on the reasonable potential analysis (RPA) showing reasonable potential to violate
state water quality standards at Outfall 001, total copper and nitrate limits have been
added to the permit and along with monthly monitoring [See A.(1.), A.(2.) and A.(3.)].
• To provide an opportunity for the Town to develop a plan to assess sources of total
copper and nitrate, and to implement treatment for ammonia in order to come in
compliance with the limits in Section A.(2.), a 3-year schedule of compliance has been
added to the permit [See Special Condition A. (12.) Schedule of Compliance for Total
Copper, Ammonia and Nitrate Limitations (Outfall 001A)].
• Based on the reasonable potential analysis (RPA) predicting a maximum effluent total
dissolved solids concentration that is greater than half of the allowable discharge
concentration based on state water quality standards at Outfall 001, quarterly monitoring
for total dissolved solids has been added to the permit [See A.(1), A.(2) and A.(3.)].
• Based on the reasonable potential analysis (RPA) showing no reasonable potential to
violate state water quality standards at Outfall 002, the monitoring requirements for total
nickel, total copper and total zinc have been removed from the permit [See A.(4.)].
• The Division is implementing dissolved metals standards in all permits, per the 2016
revisions to State water quality standards. As such, the NPDES Permitting Unit will need
site -specific effluent hardness data and instream hardness data, upstream of the discharge,
for each facility monitoring these metals in order to calculate permit limitations. Effluent
Page 2 of 4

DocuSign Envelope ID: 3D7E3FEB-A3FF-4FF6-AI AD-F59B27F0D696
hardness and instream hardness sampling, upstream of the discharge, have been added to
the permit at a monitoring frequency of quarterly.
• The Town of Pittsboro reported Total Lead and Total Silver at less than detection, with
detection levels < 10.0 µg/L in the 2019 Effluent Pollutant Scan. The Town's allowable
discharge concentrations are 8.86 µg/L and 0.062 µg/L for Total Lead and Total Silver,
respectively. DWR' s laboratory identifies the target Practical Quantification Limits (PQLs)
for Total Lead and Total Silver as 2.0 µg/L, and 1.0 µg/L, respectively. 15A NCAC 2B
.0505 (e) (4) requires that all test procedures must produce detection and reporting levels
that are below the permit discharge requirements and all data generated must be reported
to the approved detection level or lower reporting level of the procedure. If no approved
methods are capable of achieving a detection level below the permit discharge requirement
(or allowable discharge concentration) the method with the lowest detection level must be
used. Both co-permittees shall use sufficiently sensitive test methods for all pollutants,
including when performing Effluent Pollutant Scans.
• Some of the wording has changed in Special Condition A. (10.), Chronic Toxicity Permit
Limit, please review each paragraph carefully.
• Special Condition A. (11.) has been modified to the conditional statement, "Upon
expansion of design flow above 1.0 MGD, establishment of a pretreatment program, or
connection to the Big Buffalo WWTP, whichever happens first, the Permittee shall
perform a total of three (3) Effluent Pollutant Scans for all parameters listed below. Once
this has occurred, the tests shall be performed in three (3) consecutive years." In addition,
at the end of the Special Condition, 2nd species Toxicity Testing Requirements for
municipal permit renewals per Federal Regulations [40 CFR 122.21(j)(5)] have been
added.
• A notation was made concerning the Electronic Reporting Rule — NPDES Electronic
Reporting Rule — Phase 2 Extension. EPA extended the Phase 2 deadline to December
21, 2025.
• Parameter codes have been added to the Effluent Limitations and Monitoring
Requirements [ See A.(1.) — A.(6.)].
• Regulatory citations have been added to the permit.
If any parts, measurement frequencies or sampling requirements contained in this permit are
unacceptable to you, you have the right to an adjudicatory hearing upon written request within
thirty (30) days following receipt of this letter. This request must 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 (6714 Mail Service Center, Raleigh, North Carolina 27699-
6714). Unless such demand is made, this decision shall be final and binding.
The NPDES standard conditions (Parts II, III, and IV) are the same as in your current permit
except that agency and division names have been updated. The latest version is available at
https://bit.ly/3k5NFaL and can be viewed online or downloaded as a PDF file.
Please note that this permit is not transferable except after notice to the Division. The Division
may require modification or revocation and reissuance of the permit. This permit does not affect
the legal requirements to obtain other permits which may be required by the Division of Water
Resources or any other Federal, State, or Local governmental regulations.
Page 3 of 4

DocuSign Envelope ID: 3D7E3FEB-A3FF-4FF6-AI AD-F59B27F0D696
If you have any questions concerning this permit, please contact Nick Coco at [phone] or
via email at [e-mail].
Sincerely,
,—D,oculSigned by:
Aiid L
'.—C464531431644FE...
for S. Daniel Smith, Director
Division of Water Resources, NCDEQ
Hardcopy: NPDES Files
Central Files
Ecopy: US EPA Region 4
DWR/Raleigh Regional Office / Water Quality
DWR/Ecosystems Branch/Mark Vander Borgh
DWR/Aquatic Toxicology Branch/Cindy Moore and Zach Thomas
DWR/Basin Planning Branch/Nora Deamer
DWR/Public Water Supply /Shawn Guyer
Consultant/Engineer/Becky Smith
Consultant/Engineer/Tim Baldwin
Page 4 of 4

DocuSign Envelope ID: 3D7E3FEB-A3FF-4FF6-AI AD-F59B27F0D696
ROY COOPER
Governor
DIONNE DELLI-GATTI
Secretary
S. DANIEL SMITH
Director
4/19/2021
Nick Coco
DWR, NPDES
512 N. Salisbury St.
Raleigh, NC 27604
NORTH CAROLINA
Environmental Quality
Nora Deamer
DWR, Basin Planning Branch
512 N. Salisbury St.
Raleigh, NC 27604
Re: Comments regarding the proposed co -permit modification and renewal (NC0020354) the Town of Pittsboro
and Chatham Park Water Recovery Center.
Dear Mr. Coco,
I am submitting comments from the Division of Water Resources, Basin Planning Branch in regard to the permit
modification and renewal of permit NC0020354 for the Town of Pittsboro and Chatham Park Water Recovery
Center (Chatham Park LLC). I am the basinwide planner for the Cape Fear River Basin and I utilized the water
quality data that is collected by the division and the ambient monitoring coalitions to understand the impacts from
both point and nonpoint sources of pollution on the surface waters of the state.
Much of the Robeson Creek watershed is currently impaired due to fair benthic macroinvertebrate bioclassification
ratings. There is also a TMDL for total phosphorus in Robeson Creek as well as the Jordan Lake nutrient strategy
due to excess nitrogen and phosphorus. My concern as a basin planner, is that there are no ambient monitoring
stations within the upper portion of the watershed for those of us that need to understand the impacts from the
wastewater treatment discharge and/or due to the existing and the new development that is coming to this
watershed. I feel that it is imperative that we have some additional instream monitoring to help us understand the
current and future conditions and changes that are occurring as result of the large scale Chatham Park
development.
As part of the permit, there are a few instream monitoring requirement which do not include monitoring for
nitrogen or phosphorous. These are critical parameters to have in a watershed that has a nutrient strategy and a
TMDL associated with nutrients. The current downstream ambient station (B2450000) is located in the Robeson
Creek arm of Jordan Lake [AU# 16-(37.5)b]. This station is representative of what is happening in a cove of the lake
and not in Robeson Creek proper. This station indicates that there is excess nitrogen and phosphorus resulting in
elevated chlorophyll a as well as elevated total suspended solids and turbidity.
I would like to request additional parameters to be included as part of the permit upstream and downstream
monitoring in order to make sure that those of us working in this watershed have the data needed to better
understand what is occurring and how we can better protect this critical resource.
Currently the table in section A.(5.) Combined Limitations — Outfall CO1 (Combined outfalls 001A and 0018)
includes:
Temperature,
Dissolved Oxygen,
Fecal Coliform,
Conductivity, and
£ D_E
NORTH CAROLINA
Department of Environmental Uuaii�
North Carolina Department of Environmental Quality I Division of Water Resources
512 North Salisbury Street 11611 Mail Service Center I Raleigh, North Carolina 27699-1611
919.707.9000

DocuSign Envelope ID: 3D7E3FEB-A3FF-4FF6-AI AD-F59B27F0D696
Total Hardness (upstream only).
I appreciate that these parameters are currently included and would like to see additional parameters added as a
requirement of the permit. These include:
Total Nitrogen (reporting both NO2 + NO3 and TKN),
Ammonia,
Total Phosphorus,
Total Suspended Solids,
Turbidity and
Chlorophyll a.
I know that the upstream and downstream monitoring are waived due to the Town of Pittsboro's participation in
the monitoring coalition. The data collected from the coalition is incredibly valuable and important for our use in
DWR. I support this program completely and appreciate the quality of the date they produce. I would however like
to see additional stations in the Robeson Creek watershed as result of a new discharger and major development in
the watershed.
I feel that additional monitoring upstream and downstream of the actual discharge location on Robeson Creek
would provide those living in and managing this watershed a better overall understand of what pollutants are
coming from development verses the wastewater treatment plant. It could also show how well the measures put
in place to protect the stream are working. This stream is already impacted by the existing development and point
source discharge as seen by the fair benthic macroinvertebrate ratings. We must protect it from further
degradation.
According to what I understand from the NPDES permit fact sheet, Robeson Creek is listed as 100 % IWC but the
permit only requires testing at 90% effluent concentration. Given that this stream is impaired for benthos, it
seems to me that there could be an impact from the effluent at very low flows.
The Reasonable Potential Analysis (RPA) indicated that it is safe for the Town of Pittsboro to no longer have limits
or monitoring requirements for Zinc and Nickel. I do not know that I understand that same assumption should be
given to CPWRC since they have not started treating wastewater. It would seem wise to error on the side of being
overprotective, especially given the current benthos impairment.
Please let me know if you have any questions or concerns regarding my comments. I know I have a lot to learn
about permitting and how new permits are developed. This is an interesting one with the co-permittee aspect. I do
not recall ever looking at anything like this before. Thank you for the opportunity to review this co -permit.
Sincerely,
-/6.-140� �ca�rvwL
Nora Deamer
DEQ-DWR
Basinwide Planning Branch
919-707-9116
[e-mail]
£ D_E
NORTH CAROLINA
Department of Environmental Umfi�
North Carolina Department of Environmental Quality I Division of Water Resources
512 North Salisbury Street 11611 Mail Service Center I Raleigh, North Carolina 27699-1611
919.707.9000

DocuSign Envelope ID: 3D7E3FEB-A3FF-4FF6-AI AD-F59B27F0D696
Fact Sheet Addendum
On April 19, 2021, comments were received from the Division's Basin Planning Branch regarding instream
sampling locations and parameters sampled, as well as rationale behind the decision to not include specific
metals monitoring (see full comments attached). The Municipal Permitting Unit has provided the following
response:
Dear Nora,
Thank you for reviewing draft NPDES permit NC0020354 and for providing your comments.
We understand your concern regarding the lack of instream monitoring stations upstream and downstream near
the point of discharge and your request for additional parameters to be sampled. As you are aware, the Town of
Pittsboro is already a member of the Upper Cape Fear River Basin Association (UCFRBA) and Chatham Park
Investors, LLC is in the process of joining. As you noted in your comment letter, the data collected from the
coalition is valuable and important for use in DWR. It is not our intention to drive members away from the
coalition by requiring additional monitoring requirements that may diminish the perceived value of coalition
membership unless absolutely necessary. We do feel that instream monitoring is an important requirement for
assessing impacts of dischargers on the receiving stream and agree that it would be beneficial to have better
located stations, especially considering the addition and mixing of a new wastestream. This has been discussed
with the Ecosystems Branch and it has been agreed that the Division will encourage the UCFRBA to reactivate
their monitoring station located downstream of the discharge, add a monitoring station upstream of the
discharge, and incorporate the suite of parameters you had requested in their regular sampling suite.
With regard to the total zinc and total nickel inquiry, it is not expected that total zinc and total nickel would be
present in 100% domestic waste streams at levels of concern. The additional sampling conducted by the Town
of Pittsboro demonstrated that there was no reasonable potential for excursions above the allowable discharge
concentration for total nickel or total zinc. The domestic wastewater received and treated by the CPWRC is not
expected to differ significantly from the domestic wastewater received and treated by the Town of Pittsboro. As
such, no monitoring has been added for total nickel or total zinc.
We appreciate your time and comments. The permit is being issued without substantial changes from the draft.
Best,
Nicholas Coco, EI
Engineer
NPDES Municipal Permitting Unit
NCDEQ/Division of Water Resources/Water Quality Permitting

DocuSign Envelope ID: 3D7E3FEB-A3FF-4FF6-AI AD-F59B27F0D696
NPDES Permit NC0020354
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER RESOURCES
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provisions of North Carolina General Statute 143-215.1, other lawful standards
and regulations promulgated and adopted by the North Carolina Environmental Management
Commission, and the Federal Water Pollution Control Act, as amended, the
Town of Pittsboro and Chatham Park Investors LLC
are hereby authorized to discharge wastewater from a facility located at the
Town of Pittsboro WWTP
458 Small Street
Chatham County
Chatham Park Water Recovery Center
2261 US Highway 64 Business East
Chatham County
to receiving waters designated as Robeson Creek and the Haw River in the Cape Fear River Basin
in accordance with effluent limitations, monitoring requirements, and other conditions set forth in
Parts I, II, III, and IV hereof.
This permit shall become effective June 1, 2021.
This permit and the authorization to discharge shall expire at midnight on April 30, 2026.
Signed this day May 5, 2021.
DocuSigned by:
C464531431644FE...
for S. Daniel Smith, Director
Division of Water Resources
By Authority of the Environmental Management Commission
Page 1 of 25

DocuSign Envelope ID: 3D7E3FEB-A3FF-4FF6-AI AD-F59B27F0D696
NPDES Permit NC0020354
SUPPLEMENT TO PERMIT COVER SHEET
All previous NPDES Permits issued to this facility, whether for operation or discharge are hereby superseded. As of
this permit issuance, any previously issued permit bearing this number is no longer effective. Therefore, the exclusive
authority to operate and discharge from this facility arises under the permit conditions, requirements, terms, and
provisions included herein.
The Town of Pittsboro
is hereby authorized to:
1. Continue to operate an existing 0.75 MGD extended aeration treatment system consisting of the
following components:
• Influent pump station
• Manual and mechanical bar screens
• Two (2) Equalization Basins
• Two (2) Secondary Clarifiers
• Two (2) Aeration Basins with fine bubble diffusers
• Three (3) Tertiary filters
• Phosphorous removal
• Ultraviolet disinfection
• Rotary Drum Thickener
• Aerobic sludge digestion
• On -site generator
• Waste Activated Sludge pump station
• Effluent flow measurement
• Cascade post aeration
The facility is located at the Pittsboro WWTP, 458 Small St., Pittsboro in Chatham County.
2. After receiving an Authorization to Construct from the Division and upon submittal of an
engineer's certification:
• construct a 2 MGD force main to the Big Buffalo WWTP (NC0024147) in Sanford, NC, and;
• decommission the existing Pittsboro WWTP.
3. After receiving an Authorization to Construct from the Division and submitting an engineer's
certification, construct and operate a 2.721 MGD wastewater treatment facility.
4. Discharge from said treatment works at the locations specified on the attached map into Robeson
Creek (0.75 MGD, outfall 001A), and into the Haw River (1.971 MGD, outfall 002), both classified as
WS-IV NSW waters in the Cape Fear River Basin; and
(Continues on next page.)
Page 2 of 25

DocuSign Envelope ID: 3D7E3FEB-A3FF-4FF6-AI AD-F59B27F0D696
NPDES Permit NC0020354
Chatham Park Investors LLC
is hereby authorized to:
1. After receiving an Authorization to Construct from the Division for both the activation of the
existing Chatham Park WRC (formerly known as the Chatham Park Decentralized Water Resource
Recovery Facility) as a direct discharge facility and the connection of necessary sewer line to the
Town of Pittsboro's collection system for discharge through Outfall 001B, operate an existing 0.499
MGD treatment system consisting of the following components:
• Raw wastewater transfer pump station
• Influent pump station
• Mechanical bar screens
• Influent three-way splitter box
• Odor control
• Chemical feed system
• Phosphorous removal
• Four -stage biological membrane bio reactor system
• Intermediate screening
• Membrane filtration
• Sludge holding tank
• Ultraviolet disinfection
• Chlorine disinfection for reclaimed water
• Reclaimed water holding tank
• Reclaimed water pump station
• Effluent flow measurement
• Effluent pump station
The facility is located at the Chatham Park WRC, 2261 US Highway 64 Business East, Pittsboro in
Chatham County.
2. Discharge from said treatment works at the location specified on the attached map into Robeson
Creek (0.499 MGD, outfall 001B), classified as WS-IV NSW waters in the Cape Fear River Basin.
NOTE: The use of "Permittee" in this permit generally refers to both Co-Permittees, which share
responsibilities for the discharge. However, it may refer to one Co-Permittee or the other, depending on
the context. All Co-Permittees are jointly liable for violations of this permit, regardless of any and all
external Agreements between parties. External agreement conditions do not override or supersede
regulatory conditions.
Page 3 of 25

DocuSign Envelope ID: 3D7E3FEB-A3FF-4FF6-AI AD-F59B27F0D696
NPDES Permit NC0020354
PART I - MONITORING, CONTROLS, AND LIMITATIONS FOR PERMITTED DISCHARGES
A.(1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS - Outfall 001A
[15A NCAC 02B .0400 et seq., 02B .0500 et seq.] Grade IV Biological Water
Pollution Control System [15A NCAC 08G .0302]
(a.) Beginning upon the effective date of this permit and lasting until May 31, 2024 or until
decommissioning of the existing plant, whichever comes first, the Town of Pittsboro is authorized
to discharge treated wastewater from Outfall 001A to Robeson Creek. Such discharges shall be
limited and monitored) by the Permittee as specified below:
PARAMETER
Parameter Code
EFFLUENT LIMITATIONS
MONITORING REQUIREMENTS
Monthly
Average
Weekly
Average
Daily
Maximum
Measurement
Frequency
Sample
Type
Sample
Location2
Flow 50050
0.75 MGD
Continuous
Recording
I or E
Total Monthly Flow,
MG/month 82220
Monitor and Report
Monthly
Recorded or
Calculated
I or E
BOD5 (20°C)3 C0310
(April 1 - October 31)
5.0 mg/L
7.5 mg/L
Daily
Composite
I and E
BOD5 (20°C)3 C0310
(November 1 - March 31)
10.0 mg/L
15.0 mg/L
Daily
Composite
I and E
Total Suspended Solids3 C0530
30.0 mg/L
45.0 mg/L
Daily
Composite
I and E
Ammonia (NH3 as N) C0610
2.0 mg/L
6.0 mg/L
Daily
Composite
E
Total Residual Chlorine4 50060
17 pg/L
Daily
Grab
E
pH 00400
Between 6.0 and 9.0 standard units
Daily
Grab
E
Temperature, °C 00010
Monitor and Report
Daily
Grab
E
Dissolved Oxygen6 00300
Monitor and Report
Daily
Grab
E
Fecal Coliform 31616
(geometric mean)
200/100 mL
400/100 mL
Daily
Grab
E
Conductivity 00094
Monitor and Report
Daily
Grab
E
TKN (mg/L) 6 00625
Monitor and Report
Weekly
Composite
E
NO3-N + NO2-N (mg/L) 6 00630
Monitor and Report
Weekly
Composite
E
TN (mg/L) 6 C0600
Monitor and Report
Weekly
Composite
E
TN Load'$ QM600
QY600
Monitor & Report (Ib/mo)
Monitor & Report (Ib/yr)
Monthly
Annually
Calculated
E
Total Phosphorus C0665
2.0 mg/L (quarterly average) 9
Weekly
Composite
E
TP Load' $ QM665
QY665
Monitor & Report (Ib/mo)
Monitor & Report (Ib/yr)
Monthly
Annually
Calculated
E
Nitrate10 00620
Monitor & Report (mg/L)
Monthly
Composite
E
Total Copper10 01042
Monitor & Report (pg/L)
Monthly
Composite
E
TDS 70295
Monitor and Report
Quarterly
Composite
E
Total Hardness [as 00900
CaCO3], mg/Ln
Monitor and Report
Quarterly
Composite
E
Chronic Toxicity12 TGP3B
See Note 12
Quarterly
Composite
E
Effluent Pollutant Scan NCO1
Monitor and Report
Footnote 13
E
All footnotes are listed on the following page.
Page 4 of 25

DocuSign Envelope ID: 3D7E3FEB-A3FF-4FF6-AI AD-F59B27F0D696
NPDES Permit NC0020354
Footnotes from Effluent Limitations and Monitoring Requirements (Outfall 001A):
1. The Permittee shall submit discharge monitoring reports electronically using NC DWR's eDMR
application system. See Special Condition A. (13.)
2. Sample locations: I = Influent; E = Effluent
3. The monthly average BOD5 and Total Suspended Residue concentrations shall not exceed 15% of the
respective influent value (85% removal).
4. Total Residual Chlorine limit applies if chlorine or chlorine derivative is used for disinfection. The
Division shall consider all effluent TRC values reported below 50 µg/1 to be in compliance with this
permit. The Permittee shall continue to record and submit all values reported by a North Carolina
certified laboratory even if these values fall below 50 µg/1.
5. Effluent sampling for dissolved oxygen shall be conducted at the cascade aerator, just prior to discharge
into Robeson Creek.
6. TN = TKN + NO3-N + NO2-N, where TN is Total Nitrogen, TKN is Total Kjeldahl Nitrogen, and NO3-N
and NO2-N are Nitrate and Nitrite Nitrogen, respectively.
7. TN or TP Load is the mass quantity of Total Nitrogen or Phosphorus discharged in a given period of
time. See Condition A. (9.).
8. Limits for TN and TP are specified in Conditions A.(5.) and A.(6.). Compliance with mass limits shall be
determined in accordance with Conditions A.(7.) and A.(8.).
9. The quarterly average for total phosphorus shall be the average of composite samples collected weekly
during each calendar quarter (January -March, April -June, July -September, October -December).
10. The Permittee shall achieve compliance with total copper and nitrate limitations specified in Section
A.(2.) by June 1, 2024 and shall follow the compliance schedule detailed in Special Condition A. (12.).
Starting on the effective date of this permit, the Permittee shall perform monthly effluent Monitoring and
Reporting for Nitrate and Total Copper.
11. Effluent hardness sampling should be performed in conjunction with testing for hardness dependent
metals (cadmium, copper, lead, nickel, silver, and zinc).
12. Chronic Toxicity (Ceriodaphnia) P/F at 90%; March, June, September & December. See Condition A.(10.).
13. The Effluent Pollutant Scan requirement applies once the facility exceeds a design flow of 1.0 MGD,
establishes a pretreatment plan, or connects to Big Buffalo WWTP. The Permittee shall perform three
effluent pollutant scans during the term of this permit [see condition A. (11.)].
(b.) There shall be no discharge of floating solids or foam in other than trace amounts.
Page 5 of 25

DocuSign Envelope ID: 3D7E3FEB-A3FF-4FF6-AI AD-F59B27F0D696
NPDES Permit NC0020354
A.(2.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS - Outfall 001A
[15A NCAC 02B .0400 et seq., 02B .0500 et seq.] Grade IV Biological Water
Pollution Control System [15A NCAC 08G .0302]
(a.) During the period beginning on June 1, 2024 and lasting until expiration or decommissioning of
the existing plant, whichever comes first, the Town of Pittsboro is authorized to discharge treated
wastewater from Outfall 001A to Robeson Creek. Such discharges shall be limited and
monitored) by the Permittee as specified below:
PARAMETER
Parameter Code
EFFLUENT LIMITATIONS
MONITORING REQUIREMENTS
Monthly
Average
Weekly
Average
Daily
Maximum
Measurement
Frequency
Sample
Type
Sample
Location2
Flow 50050
0.75 MGD
Continuous
Recording
I or E
Total Monthly Flow,
MG/month 82220
Monitor
and Report
Monthly
Recorded or
Calculated
I or E
BOD5 (20°C)3 C0310
(April 1 - October 31)
5.0 mg/L
7.5 mg/L
Daily
Composite
I and E
BOD5 (20°C)3 C0310
(November 1 - March 31)
10.0 mg/L
15.0 mg/L
Daily
Composite
I and E
Total Suspended Solids3 C0530
30.0 mg/L
45.0 mg/L
Daily
Composite
I and E
Ammonia (NH3 as N) C0610
1.0 mg/L
3.0 mg/L
Daily
Composite
E
Total Residual Chlorine4 50060
17 pg/L
Daily
Grab
E
pH 00400
Between 6.0
and 9.0 standard units
Daily
Grab
E
Temperature, °C 00010
Monitor
and Report
Daily
Grab
E
Dissolved Oxygen6 00300
Monitor
and Report
Daily
Grab
E
Fecal Coliform 31616
(geometric mean)
200/100 mL
400/100 mL
Daily
Grab
E
Conductivity 00094
Monitor and Report
Daily
Grab
E
TKN (mg/L) 6 00625
Monitor and Report
Weekly
Composite
E
NO3-N + NO2-N (mg/L) 6 00630
Monitor and Report
Weekly
Composite
E
TN (mg/L) 6 C0600
Monitor and Report
Weekly
Composite
E
TN Load'$ QM600
QY600
Monitor & Report (Ib/mo)
Monitor & Report (Ib/yr)
Monthly
Annually
Calculated
E
Total Phosphorus C0665
2.0 mg/L (quarterly average) 9
Weekly
Composite
E
TP Load' $ QM665
QY665
Monitor & Report (Ib/mo)
Monitor & Report (Ib/yr)
Monthly
Annually
Calculated
E
Nitrate 00620
10.2 mg/L
Monthly
Composite
E
Total Copper 01042
18.5 pg/L
26.7 pg/L
Monthly
Composite
E
TDS 70295
Monitor and Report
Quarterly
Composite
E
Total Hardness [as 00900
CaCO3], mg/L0
Monitor and Report
Quarterly
Composite
E
Chronic Toxicity" TGP3B
See Note 11
Quarterly
Composite
E
Effluent Pollutant Scan NCO1
Monitor and Report
Footnote 12
E
All footnotes are listed on the following page.
Page 6 of 25

DocuSign Envelope ID: 3D7E3FEB-A3FF-4FF6-AI AD-F59B27F0D696
NPDES Permit NC0020354
Footnotes from Effluent Limitations and Monitoring Requirements (Outfall 001A):
1. The Permittee shall submit discharge monitoring reports electronically using NC DWR's eDMR
application system. See Special Condition A. (13.)
2. Sample locations: I = Influent; E = Effluent
3. The monthly average BOD5 and Total Suspended Residue concentrations shall not exceed 15% of the
respective influent value (85% removal).
4. Total Residual Chlorine limit applies if chlorine or chlorine derivative is used for disinfection. The
Division shall consider all effluent TRC values reported below 50 µg/1 to be in compliance with this
permit. The Permittee shall continue to record and submit all values reported by a North Carolina
certified laboratory even if these values fall below 50 µg/1.
5. Effluent sampling for dissolved oxygen shall be conducted at the cascade aerator, just prior to discharge
into Robeson Creek.
6. TN = TKN + NO3-N + NO2-N, where TN is Total Nitrogen, TKN is Total Kjeldahl Nitrogen, and NO3-N
and NO2-N are Nitrate and Nitrite Nitrogen, respectively.
7. TN or TP Load is the mass quantity of Total Nitrogen or Phosphorus discharged in a given period of
time. See Condition A. (9.).
8. Limits for TN and TP are specified in Conditions A.(5.) and A.(6.). Compliance with mass limits shall be
determined in accordance with Conditions A.(7.) and A.(8.).
9. The quarterly average for total phosphorus shall be the average of composite samples collected weekly
during each calendar quarter (January -March, April -June, July -September, October -December).
10. Effluent hardness sampling should be performed in conjunction with testing for hardness dependent
metals (cadmium, copper, lead, nickel, silver, and zinc).
11. Chronic Toxicity (Ceriodaphnia) P/F at 90%; March, June, September & December. See Condition A.(10.).
12. The Effluent Pollutant Scan requirement applies once the facility exceeds a design flow of 1.0 MGD,
establishes a pretreatment plan, or connects to Big Buffalo WWTP. The Permittee shall perform three
effluent pollutant scans during the term of this permit [see condition A. (11.)].
(b.) There shall be no discharge of floating solids or foam in other than trace amounts.
Page 7 of 25

DocuSign Envelope ID: 3D7E3FEB-A3FF-4FF6-AI AD-F59B27F0D696
NPDES Permit NC0020354
A.(3.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS - Outfall 001B
[15A NCAC 02B .0400 et seq., 02B .0500 et seq.] Grade III Biological Water
Pollution Control System [15A NCAC 08G .0302]
(a.) Beginning upon receipt of engineer's certificate for the construction of the sewer connection to the
Pittsboro WWTP and the activation of the Chatham Park Water Recovery Center, and lasting
until permit expiration, Chatham Park Investors LLC is authorized to discharge treated
wastewater from Outfall 001B to Robeson Creek. Such discharges shall be limited and
monitored1 by the Permittee as specified below:
PARAMETER
Parameter Code
EFFLUENT LIMITATIONS
MONITORING REQUIREMENTS
Monthly
Average
Daily
Maximum
Measurement
Frequency
Sample
Type
Sample
Location2
Flow 50050
0.499 MGD
Continuous
Recording
I or E
Total Monthly Flow,
MG/month 82220
Monitor and Report
Monthly
Recorded or
Calculated
I or E
BOD5 (20°C)3 C0310
(April 1 - October 31)
5.0 mg/L
7.5 mg/L
Daily4
Composite
I and E
BOD5 (20°C)3 C0310
(November 1 - March 31)
10.0 mg/L
15.0 mg/L
Daily4
Composite
I and E
Total Suspended Solids3 C0530
30.0 mg/L
45.0 mg/L
Daily4
Composite
I and E
Ammonia (NH3 as N) C0610
1.0 mg/L
5.0 mg/L
Daily4
Composite
E
Total Residual Chlorines 50060
17 pg/L
Daily4
Grab
E
pH6 00400
Between 6.0 and 9.0 standard
units
Daily4
Grab
E
Temperature, °C 00010
Monitor and Report
Daily
Grab
E
Dissolved Oxygen, mg/L6 00300
Monitor and Report
Daily4
Grab
E
Fecal Coliform6 31616
(geometric mean)
200/100 mL
400/100 mL
Daily4
Grab
E
Conductivity 00094
Monitor and Report
Daily4
Grab
E
TKN, mg/L 7 00625
Monitor and Report
Weekly
Composite
E
NO3-N + NO2-N, mg/L 7 00630
Monitor and Report
Weekly
Composite
E
TN, mg/L 7 C0600
Monitor and Report
Weekly
Composite
E
TN Load $,9 QM600
QY600
Monitor & Report (Ib/mo)
Monitor & Report (Ib/yr)
Monthly
Annually
Calculated
E
Total Phosphorus, mg/L C0665
2.0 mg/L (quarterly average) 10
Weekly
Composite
E
TP Load $,9 QM665
QY665
Monitor & Report (Ib/mo)
Monitor & Report (Ib/yr)
Monthly
Annually
Calculated
E
Nitrate 00620
10.2 mg/L
Monthly
Composite
E
Total Copper 01042
18.5 pg/L
26.7 pg/L
Monthly
Composite
E
TDS 70295
Monitor and Report
Quarterly
Composite
E
Total Hardness [as CaCO3], 00900
mg/L11
Monitor and Report
Quarterly
Composite
E
Chronic Toxicity12 TGP3B
See Note 12
Quarterly
Composite
E
Effluent Pollutant Scan NCO1
Monitor and Report
Footnote 13
E
All footnotes are listed on the following page.
Page 8 of 25

DocuSign Envelope ID: 3D7E3FEB-A3FF-4FF6-AI AD-F59B27F0D696
NPDES Permit NC0020354
Footnotes from Effluent Limitations and Monitoring Requirements (Outfall 001B):
1. The Permittee shall submit discharge monitoring reports electronically using NC DWR's eDMR
application system. See Special Condition A. (13.)
2. Sample locations: I = Influent; E = Effluent
3. The monthly average BOD5 and Total Suspended Residue concentrations shall not exceed 15% of the
respective influent value (85% removal).
4. Upon decommissioning of the Pittsboro WWTP, and upon Division approval of a submitted data review
and monitoring frequency reduction justification for each parameter, begin sampling for BOD5, TSS,
ammonia, total residual chlorine, pH, dissolved oxygen, fecal coliform and conductivity at a monitoring
frequency of 3/week. The frequency reduction could be for one or more or all parameters.
5. Total Residual Chlorine limit applies if chlorine or chlorine derivative is used for disinfection. The
Division shall consider all effluent TRC values reported below 50 µg/1 to be in compliance with this
permit. The Permittee shall continue to record and submit all values reported by a North Carolina
certified laboratory even if these values fall below 50 µg/1.
6. Effluent sampling for fecal coliform, pH and dissolved oxygen shall be conducted at the manhole
sampling location just prior to combination of flow with the Pittsboro WWTP. Upon decommissioning of
the Pittsboro WWTP, effluent sampling for dissolved oxygen shall instead be conducted at the cascade
aerator, just prior to discharge into Robeson Creek and effluent sampling for fecal coliform and pH shall
be conducted at the remaining Pittsboro WWTP UV disinfection channel.
7. TN = TKN + NO3-N + NO2-N, where TN is Total Nitrogen, TKN is Total Kjeldahl Nitrogen, and NO3-N
and NO2-N are Nitrate and Nitrite Nitrogen, respectively.
8. TN or TP Load is the mass quantity of Total Nitrogen or Phosphorus discharged in a given period of
time. See Condition A. (9.).
9. Limits for TN and TP are specified in Conditions A.(5.) and A.(6.). Compliance with mass limits shall be
determined in accordance with Conditions A.(7.) and A.(8.).
10. The quarterly average for total phosphorus shall be the average of composite samples collected weekly
during each calendar quarter (January -March, April -June, July -September, October -December).
11. Effluent hardness sampling should be performed in conjunction with testing for hardness dependent
metals (cadmium, copper, lead, nickel, silver, and zinc).
12. Chronic Toxicity (Ceriodaphnia) P/F at 90%; March, June, September & December. See Condition A.(10.).
13. The Effluent Pollutant Scan requirement applies once the facility exceeds a design flow of 1.0 MGD,
establishes a pretreatment plan, or connects to Big Buffalo WWTP. The Permittee shall perform three
effluent pollutant scans during the term of this permit [see condition A. (11.)].
(b.) There shall be no discharge of floating solids or visible foam in other than trace amounts.
Page 9 of 25

DocuSign Envelope ID: 3D7E3FEB-A3FF-4FF6-AI AD-F59B27F0D696
NPDES Permit NC0020354
A.(4.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS - Outfall 002
[15A NCAC 02B .0400 et seq., 02B .0500 et seq.] Grade IV Biological Water
Pollution Control System [15A NCAC 08G .0302]
(a.) During the period beginning upon written acceptance from the Division of the Engineer's
Certification for the completion of construction resulting in discharge to the Haw River, and
lasting until permit expiration, the Town of Pittsboro is authorized to discharge treated
wastewater from Outfall 002 to the Haw River. Such discharges shall be limited and monitored)
by the Permittee as specified below:
PARAMETER
Parameter Code
EFFLUENT LIMITATIONS
MONITORING REQUIREMENTS
Monthly
Average
Weekly
Average
Daily
Maximum
Measurement
Frequency
Sample
Type
Sample
Location2
Flow 50050
1.971 MGD
Continuous
Recording
I or E
Total Monthly Flow,
MG/month 82220
Monitor and Report
Monthly
Recorded or
Calculated
I or E
BOD5 (20°C)3 C0310
(April 1 - October 31)
5.0 mg/L
7.5 mg/L
Daily
Composite
I and E
BOD5 (20°C)3 C0310
(November 1 - March 31)
10.0 mg/L
15.0 mg/L
Daily
Composite
I and E
Total Suspended Solids3 C0530
30.0 mg/L
45.0 mg/L
Daily
Composite
I and E
Ammonia (NH3 as N) C0610
(April 1— October 31)
1.0 mg/L
3.0 mg/L
Daily
Composite
E
Ammonia (NH3 as N) C0610
(November 1 — March 31)
2.0 mg/L
6.0 mg/L
Daily
Composite
E
Total Residual Chlorine4 50060
28 pg/L
Daily
Grab
E
pH 00400
Between 6.0 and 9.0 standard units
Daily
Grab
E
Temperature, °C 00010
Monitor and Report
Daily
Grab
E
Dissolved Oxygen 00300
Daily Average >_ 6.0 mg/L
Daily
Grab
E
Fecal Coliform 31616
(geometric mean)
14/100 mL
25/100 mL
Daily
Grab
E
Conductivity 00094
Monitor and Report
Daily
Grab
E
TKN, mg/L s 00625
Monitor and Report
Weekly
Composite
E
NO3-N + NO2-N, mg/L s 00630
Monitor and Report
Weekly
Composite
E
TN, mg/L s C0600
Monitor and Report
Weekly
Composite
E
TN Load e' QM600
QY600
Monitor and Report (Ib/mo)
Monitor and Report (Ib/yr)
Monthly
Annually
Calculated
E
Total Phosphorus, mg/L C0665
Monitor and Report
Weekly
Composite
E
TP Load 67 QM665
QY665
Monitor and Report (Ib/mo)
Monitor and Report (Ib/yr)
Monthly
Annually
Calculated
E
Total Hardness [as 00900
CaCO3], mg/L8
Monitor and Report
p
Quarterly
Q y
Composite
p
E
Chronic Toxicity9 TGP3B
See Note 9
Quarterly
Composite
E
Effluent Pollutant Scan NCO1
Monitor and Report
Footnote 10
E
Temperature, °C 00010
Monitor and Report
Variable2
Grab
U and D
Dissolved Oxygen 00300
Monitor and Report
Variable2
Grab
U and D
Fecal Coliform 31616
(geometric mean)
Monitor and Report
Variable2
Grab
U and D
Conductivity 00094
Monitor and Report
Variable2
Grab
U and D
Total Hardness [as 00900
CaCO3], mg/Ln
Monitor and Report
Quarterly
Grab
U
All footnotes are listed on the following page.
Page 10 of 25

DocuSign Envelope ID: 3D7E3FEB-A3FF-4FF6-AI AD-F59B27F0D696
NPDES Permit NC0020354
Footnotes from Effluent Limitations and Monitoring Requirements (Outfall 002):
1. The Permittee shall submit discharge monitoring reports electronically using NC DWR's eDMR application
system. See Special Condition A. (13.)
2. Sample locations: I = Influent; E = Effluent; U = Upstream at least 100 yards above the outfall; D =
Downstream at least 100 yards downstream from the outfall. Instream monitoring shall be conducted
3/Week during June, July, August, and September, and once per week during the remainder of the year.
Instream monitoring is provisionally waived in light of the Permittee's participation in the Upper Cape Fear
River Basin Association. Instream monitoring shall be conducted as stated in this permit should the Permittee
end its participation in the Association.
3. The monthly average BOD5 and Total Suspended Residue concentrations shall not exceed 15% of the
respective influent value (85% removal).
4. Total Residual Chlorine limit applies if chlorine or chlorine derivative is used for disinfection. The Division
shall consider all effluent TRC values reported below 50 µg/1 to be in compliance with this permit. The
Permittee shall continue to record and submit all values reported by a North Carolina certified laboratory
even if these values fall below 50 µg/1.
5. TN = TKN + NO3-N + NO2-N, where TN is Total Nitrogen, TKN is Total Kjeldahl Nitrogen, and NO3-N and
NO2-N are Nitrate and Nitrite Nitrogen, respectively.
6. TN or TP Load is the mass quantity of Total Nitrogen or Phosphorus discharged in a given period of time.
See Condition A. (9.).
7. Limits for TN and TP are specified in Condition A.(6.). Compliance with mass limits shall be determined in
accordance with Conditions A.(7.) and A.(8.).
8. Effluent hardness sampling should be performed in conjunction with testing for hardness dependent metals
(cadmium, copper, lead, nickel, silver, and zinc).
9. Chronic Toxicity (Ceriodaphnia) P/F at 4.0 %; March, June, September & December. See Condition A.(10.).
10. The Permittee shall perform three effluent pollutant scans during the term of this permit [see condition A.
(11.)].
11. The Permittee shall sample instream hardness, upstream of the facility's discharge. The sample shall be
representative of the hardness in the receiving stream.
(b.) There shall be no discharge of floating solids or visible foam in other than trace amounts.
Page 11 of 25

DocuSign Envelope ID: 3D7E3FEB-A3FF-4FF6-AI AD-F59B27F0D696
NPDES Permit NC0020354
A.(5.) COMBINED LIMITATIONS - Outfall C01 (Combined Outfalls 001A and 001B)
[15A NCAC 02B .0400 et seq., 02B .0500 et seq.]
Beginning upon the effective date of this permit and lasting until permit expiration, the Permittee is
subject to the following combined limitations for discharges from Outfalls 001A and 001B in addition to
any limits specified in Conditions A.(1.) or A.(2.), and A.(3.) of this permit:
PARAMETER
Parameter Code
EFFLUENT LIMITATIONS
MONITORING REQUIREMENTS
Monthly
Average
Weekly
Average
Daily
Maximum
Measurement
Frequency
Sample
Type
Sample
Locations
Flow2 50050
1.249 MGD
See Conditions
A.(1.), A.(2.)
and A.(3.)
Calculated
Combined OO1A &
001E
Dissolved Oxygen 00300
Daily Average >_ 6.0 mg/L
Daily
Grab
E
TP Load2'3
(April 1 — October 31) QS665
322 lb
Seasonally
Calculated
Combined OO1A &
001B
Temperature, °C 00010
Monitor and Report
Variable'
Grab
U and D
Dissolved Oxygen 00300
Monitor and Report
Variable'
Grab
U and D
Fecal Coliform 31616
(geometric mean)
Monitor and Report
Variable'
Grab
U and D
Conductivity 00094
Monitor and Report
Variable'
Grab
U and D
Total Hardness [as 00900
CaCO3], mg/L4
Monitor and Report
Quarterly
Grab
U
Footnotes:
1. Sample locations: E = Effluent; U = Upstream at least 100 yards above the outfall; D = Downstream at
least 100 yards downstream from the outfall. Instream monitoring shall be conducted 3/Week during
June, July, August, and September, and once per week during the remainder of the year. Instream
monitoring is provisionally waived in light of the Permittee's participation in the Upper Cape Fear River
Basin Association. Instream monitoring shall be conducted as stated in this permit should the Permittee
end its participation in the Association.
2. Flow and TP Load Values at Combined Outfall C01 are the sum of the corresponding values at Outfalls
001A and 001B.
3. Compliance with the nutrient limits shall be determined in accordance with Conditions A.( 7.) of this
permit.
4. The Permittee shall sample instream hardness, upstream of the facility's discharge. The sample shall be
representative of the hardness in the receiving stream.
Page 12 of 25

DocuSign Envelope ID: 3D7E3FEB-A3FF-4FF6-AI AD-F59B27F0D696
NPDES Permit NC0020354
A.(6.) COMBINED LIMITATIONS - Outfall CO2 (Combined Outfalls 001A, 001B and 002)
[15A NCAC 02B .0400 et seq., 02B .0500 et seq.]
Beginning upon the effective date of this permit and lasting until permit expiration, the Permittee is
subject to the following combined limitations for discharges from Outfalls 001A, 001B and 002 in
addition to any limits specified in Conditions A.(1.) or A.(2.), A.(3.) and A.(4.) of this permit:
PARAMETER
Parameter Code
EFFLUENT LIMITATIONS
MONITORING REQUIREMENTS
Monthly
Average
Weekly
Average
Daily
Maximum
Measurement
Frequency
Sample
Type
Sample
Locations
Flow 50050
3.22 MGD
See Conditions
A.(1.), A.(2.),
A.(3.) and
A.(4.)
Calculated
Combined OO1A,
001B & 002
TP Delivered Load2 QY600
3,731 Ib/yr
Annually
Calculated
Combined OO1A,
001B & 002
TN Delivered Load2 QY665
Monitor and Report
27,514 Ib/yr
Annually
Calculated
Combined OO1A,
001B & 002
Footnotes:
1. Values at Combined Outfall CO2 are the sum of the corresponding values at Outfalls 001A, 001B and 002.
2. Compliance with the nutrient limits shall be determined in accordance with Conditions A.(7.) and A.(8.)
of this permit.
Page 13 of 25

DocuSign Envelope ID: 3D7E3FEB-A3FF-4FF6-AI AD-F59B27F0D696
NPDES Permit NC0020354
A.(7.) NUTRIENT ALLOCATIONS
[T15A NCAC 02B .0270, 2004 Robeson Creek TMDL]
(a.) The Town of Pittsboro is assigned Total Phosphorus (TP) and Total Nitrogen (TN) allocations for
its wastewater discharges, under the following authorities:
(i.) Robeson Creek Total Phosphorus TMDL, approved 1/13/2004.
(ii.) Jordan Lake TMDL, approved 9/20/2007 and incorporated into Jordan Lake Nutrient
Management Strategy - Wastewater Discharge Requirements, Rule 15A NCAC 02B .0270
(the "wastewater rule").
(b.) The Robeson Creek TMDL limits the discharge of Total Phosphorus from Pittsboro wastewater
facilities into Robeson Creek (Outfall 001) to 3221b TP per summer season (April 1 - October 31).
(c.) The following tables list the allocations assigned to, acquired by, or transferred to and from the
Permittees in accordance with the Jordan Lake TMDL and wastewater rule and the status of each
as of permit issuance. These allocations are not enforceable limits nor do they supersede any TN
or TP limit specified elsewhere in this permit or in the NPDES permit of a compliance association
of which the Permittee is a Co-Permittee Member.
Total Nitrogen Allocation
ALLOCATION
TYPE
CO-PERMITTEE
SOURCE/
DATE
ALLOCATION AMOUNT (1)
STATUS
Delivered
(Ib/yr)
Discharge (001)
(Ib/yr)
Base Allocation
Town of Pittsboro
Footnote 2
27,514
36,202
Active
N/A
Chatham Park WRC
N/A
0
0
N/A
TOTAL
27,514
36,202
Active
Footnotes:
(1) Nitrogen Transport Factor = 76% at Robeson Creek (Outfall 001), 99% at Haw River (Outfall 002).
(2) Assigned in accordance with Rule 15A NCAC 02B .0270, effective 8/11/2009.
Total Phosphorus Allocation
ALLOCATION
TYPE
CO-PERMITTEE
SOURCE/
DATE
ALLOCATION AMOUNT (1)
STATUS
Delivered
(Ib/yr)
Discharge (001)
(Ib/yr)
Base
Town of Pittsboro
Footnote 2
3,731
4,551
Active
N/A
Chatham Park WRC
N/A
0
0
N/A
TOTAL
3,731
4,551
Active
Footnotes:
(1) Phosphorus Transport Factor = 82% at Robeson Creek (Outfall 001), 99% at Haw River (Outfall 002).
(2) Assigned in accordance with Rule 15A NCAC 02B .0270, effective 8/11/2009.
(d.) Any addition, deletion, or modification of the listed allocation(s) (other than to correct
typographical errors) or any change in status of any of the listed allocations shall be considered a
major modification of this permit and shall be subject to the public review process afforded such
modifications under state and federal rules.
Page 14 of 25

DocuSign Envelope ID: 3D7E3FEB-A3FF-4FF6-AI AD-F59B27F0D696
NPDES Permit NC0020354
A.(8.) ANNUAL NUTRIENT LIMITS - Jordan Lake
[T15A NCAC 02B .0270]
Total Nitrogen (TN) and Total Phosphorus (TP) allocations and load limits established under the
Jordan Lake Nutrient Management Strategy for NPDES wastewater dischargers are annual values
and apply on a calendar year basis. (The provisions of this special condition are limited to these
annual limits and do not apply to seasonal limits established in the Robeson Creek TMDL.)
(b.) For any given calendar year, the Permittee shall be in compliance with the annual TN (or TP)
Load limit in this Permit if:
(a.)
(i.) the Permittee's annual TN (or TP) Load is less than or equal to the effective limit, or
(ii.) the Permittee is a Co-Permittee Member of a compliance association.
(c.) The TN (or TP) Load limit in this Permit may be modified as the result of allowable changes in
the Permittee's allocations.
(i.) Allowable changes include those resulting from purchase of TN (or TP) allocation from an
authorized mitigation banker, the Division of Mitigation Services, or other source allowed
under applicable regulations; purchase, sale, trade, or lease of allocation between the
Permittee and other dischargers; regionalization; and other transactions approved by the
Division.
(ii.) The Permittee may request a modification of the TN (or TP) Load limit in this Permit to
reflect allowable changes in its allocation(s).
(A) Upon receipt of timely and proper application, the Division will modify the permit as
appropriate and in accordance with state and federal program requirements.
(B) Changes in TN (or TP) limits become effective on January 1 of the year following
permit modification. The Division must receive application no later than August 31 for
changes proposed for the following calendar year.
(iii.) Any requests for modification should be sent to:
NCDEQ/ DWR/ NPDES Programs
Attn: Jordan Lake Watershed Coordinator
1617 Mail Service Center
Raleigh, NC 27699-1617
(d.) If the Permittee is a member and co-permittee of an approved compliance association on January
1 of a given year, its TN and TP discharges during that year are governed by that association's
group NPDES permit and the limits therein.
(i.) The Permittee shall be considered a Co-Permittee Member for any given calendar year in
which it is identified as such in Appendix A of the association's group NPDES permit.
(ii.) Association roster(s) and members' TN and TP allocations will be updated annually and in
accordance with state and federal program requirements.
(iii.) If the Permittee intends to join or leave a compliance association, the Division must be
notified of the proposed action in accordance with the procedures defined in the
association's NPDES permit.
(A) Upon receipt of timely and proper notification, the Division will modify the permit as
appropriate and in accordance with state and federal program requirements.
(B) Membership changes in a compliance association become effective on January 1 of the
year following modification of the association's permit.
Page 15 of 25

DocuSign Envelope ID: 3D7E3FEB-A3FF-4FF6-AI AD-F59B27F0D696
NPDES Permit NC0020354
(e.) The TN and TP monitoring and reporting requirements in this Permit remain in effect throughout
the term of the Permit and are not affected by the Permittee's membership in a compliance
association.
A.(9.) CALCULATION AND REPORTING OF NUTRIENT LOADS
{G.S. 143-215.1 (b)]
The Permittee shall calculate and report monthly and annual nutrient loads as follows:
(a.) Calculation of Discharge Loads (Outfalls 001A, 001B and 002): The Permittee shall calculate
monthly and annual discharge loads for each outfall as follows:
(i.) Monthly Discharge Load (lb/mo, TN or TP) = TN (or TP) x TMF x 8.34
where:
TN (or TP) = the average Total Nitrogen (or Total Phosphorus) concentration
(mg/L) of the composite samples collected during the month
TMF = the Total Monthly Flow of wastewater discharged during the
month (MG/mo)
8.34 = conversion factor, from (mg/L x MG) to pounds
(ii.) Annual Discharge Load (lb/yr, TN or TP) = Sum of the 12 Monthly TN (or TP) Loads for the
calendar year
(b.) Calculation of Delivered Loads (Outfalls C01 and CO2): The Permittee shall calculate annual
delivered loads as follows:
(i.) Individual Outfalls 001A, 001B & 002:
Annual Delivered Load (lb/yr, TN or TP) = Annual Discharge Load (lb/yr) x TF
where TF = Transport Factor for each outfall, as specified in Condition A.(5.),
Nutrient Allocations and Limits.
(ii.) Combined Outfall C01:
Annual Delivered Load (lb/yr, TN or TP) = Sum of the Outfalls 001A & 001B Annual
Delivered TN (or TP) Loads for the calendar year
(iii.) Combined Outfall CO2:
Annual Delivered Load (lb/yr, TN or TP) = Sum of the Outfalls 001A, 001B & 002 Annual
Delivered TN (or TP) Loads for the calendar year
(c.) Reporting of Nutrient Discharges: The Permittee shall report monthly TN and TP discharge loads
for Outfalls 001 and 002 in the appropriate discharge monitoring report.
(d.) Reporting of Combined Delivered Loads: The Permittee shall:
(i.) report each calendar year's combined delivered TN and TP loads for Outfalls C01 and CO2
with the December report for that year;
(ii.) report each summer season's combined TP loads for Outfall C01 (April 1 - October 31) with
the November report for that year; and
(iii.) if requested by the Division, provide a summary of its calculations for these loads.
Page 16 of 25

DocuSign Envelope ID: 3D7E3FEB-A3FF-4FF6-AI AD-F59B27F0D696
NPDES Permit NC0020354
A.(10.) CHRONIC TOXICITY PERMIT LIMITS (QUARTERLY)
[15A NCAC 02B .0200 et seq.]
The effluent discharge shall at no time exhibit observable inhibition of reproduction or significant
mortality to Ceriodaphnia dubia at an effluent concentration of 90% at Outfall 001A and 001B (Robeson
Creek) and 4 % at Outfall 002 (Haw River).
The permit holder shall perform at a minimum, quarterly monitoring using test procedures outlined in
the "North Carolina Ceriodaphnia Chronic Effluent Bioassay Procedure," Revised December 2010, or
subsequent versions or "North Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure"
(Revised- December 2010) or subsequent versions. The tests will be performed performed during the
months of March, June, September, and December. These months signify the first month of each
three month toxicity testing quarter assigned to the facility. Effluent sampling for this testing must be
obtained during representative effluent discharge and shall be performed at the NPDES permitted final
effluent discharge below all treatment processes.
If the test procedure performed as the first test of any single quarter results in a failure or ChV
below the permit limit, then multiple -concentration testing shall be performed at a minimum, in
each of the two following months as described in "North Carolina Phase II Chronic Whole Effluent
Toxicity Test Procedure" (Revised -December 2010) or subsequent versions.
All toxicity testing results required as part of this permit condition will be entered electronically using
the Division's eDMR system for the months in which tests were performed, using the parameter code
TGP3B for the pass/fail results and THP3B for the Chronic Value. Additionally, DWR Form AT-3
(original) is to be sent to the following address:
North Carolina Division of Water Resources
Water Sciences Section/Aquatic Toxicology Branch
1621 Mail Service Center
Raleigh, NC 27699-1621
Or, results can be sent to the email, [e-mail].
Completed Aquatic Toxicity Test Forms shall be filed with the Water Sciences Section no later than 30
days after the end of the reporting period for which the report is made.
Test data shall be complete, accurate, include all supporting chemical/physical measurements and all
concentration/response data, and be certified by laboratory supervisor and ORC or approved
designate signature. Total residual chlorine of the effluent toxicity sample must be measured and
reported if chlorine is employed for disinfection of the waste stream.
Should there be no discharge of flow from the facility during a month in which toxicity monitoring is
required, the permittee will complete the information located at the top of the aquatic toxicity (AT) test
form indicating the facility name, permit number, pipe number, county, and the month/year of the
report with the notation of "No Flow" in the comment area of the form. The report shall be submitted
to the Water Sciences Section at the address cited above.
Page 17 of 25

DocuSign Envelope ID: 3D7E3FEB-A3FF-4FF6-AI AD-F59B27F0D696
NPDES Permit NC0020354
Should the permittee fail to monitor during a month in which toxicity monitoring is required,
monitoring will be required during the following month. Assessment of toxicity compliance is based on
the toxicity testing quarter, which is the three-month time interval that begins on the first day of the
month in which toxicity testing is required by this permit and continues until the final day of the third
month.
Should any test data from this monitoring requirement or tests performed by the North Carolina
Division of Water Resources indicate potential impacts to the receiving stream, this permit may be re-
opened and modified to include alternate monitoring requirements or limits.
NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum control
organism survival, minimum control organism reproduction, and appropriate environmental controls,
shall constitute an invalid test and will require immediate follow-up testing to be completed no later
than the last day of the month following the month of the initial monitoring.
Page 18 of 25

DocuSign Envelope ID: 3D7E3FEB-A3FF-4FF6-AI AD-F59B27F0D696
NPDES Permit NC0020354
A.(11.) EFFLUENT POLLUTANT SCAN
[G.S. 143-215.1 (b)]
Upon expansion of design flow above 1.0 MGD, establishment of a pretreatment program, or connection to
the Big Buffalo WWTP, whichever happens first, the Permittee shall perform a total of three (3) Effluent
Pollutant Scans for all parameters listed below. Once this has occurred, the tests shall be performed in three
(3) consecutive years. Analytical methods shall be in accordance with 40 CFR Part 136 and shall be
sufficiently sensitive to determine whether parameters are present in concentrations greater than applicable
standards and criteria. Samples should be collected with one quarterly toxicity test each year, and must
represent seasonal variation [i.e., do not sample in the same quarter every year]. Unless otherwise
indicated, metals shall be analyzed as "total recoverable."
Ammonia (as N)
Chlorine (total residual, TRC)
Dissolved oxygen
Nitrate / Nitrite
Kjeldahl nitrogen
Oil and grease
Phosphorus
Total dissolved solids
Hardness
Antimony
Arsenic
Beryllium
Cadmium
Chromium
Copper
Lead
Mercury (Method 1631E)
Nickel
Selenium
Silver
Thallium
Zinc
Cyanide
Total phenolic compounds
Volatile organic compounds:
Acrolein
Acrylonitrile
Benzene
Bromoform
Carbon tetrachloride
Chlorobenzene
Chlorodibromomethane
Chloroethane
2-chloroethyl vinyl ether
Chloroform
Dichlorobromomethane
1,1-dichloroethane
1,2-dichloroethane
C0610
50060
00300
00630
00625
00556
C0665
70295
00900
01097
01002
01012
01027
C0034
01042
01051
COMER
01067
01147
01077
01059
01092
00720
32730
Trans-1,2-dichloroethylene
1,1-dichloroethylene
1,2-dichloropropane
1,3-dichloropropylene
Ethylbenzene
Methyl bromide
Methyl chloride
Methylene chloride
1,1,2,2-tetrachloroethane
Tetrachloroethylene
Toluene
1,1,1-trichloroethane
1,1,2-trichloroethane
Trichloroethylene
Vinyl chloride
Acid -extractable compounds:
P-chloro-m-cresol
2-chlorophenol
2,4-dichlorophenol
2,4-dimethylphenol
4,6-dinitro-o-cresol
2,4-dinitrophenol
2-nitrophenol
4-nitrophenol
Pentachlorophenol
34210 Phenol
34215 2,4,6-trichlorophenol
34030 Base -neutral compounds:
32104 Acenaphthene
32102 Acenaphthylene
34301 Anthracene
34306 Benzidine
85811 Benzo(a)anthracene
34576 Benzo(a)pyrene
32106 3,4 benzofluoranthene
32101 Benzo(ghi)perylene
34496 Benzo(k)fluoranthene
32103 Bis (2-chloroethoxy) methane
34546
34501
C0541
77163
34371
34413
34418
34423
81549
34475
34010
34506
34511
39180
39175
34452
34586
34601
34606
34657
34616
34591
34646
39032
34694
34621
34205
34200
CO220
39120
C0526
34247
34230
34521
34242
34278
Bis (2-chloroethyl) ether
Bis (2-chloroisopropyl) ether
Bis (2-ethylhexyl) phthalate
4-bromophenyl phenyl ether
Butyl benzyl phthalate
2-chloronaphthalene
4-chlorophenyl phenyl ether
Chrysene
Di-n-butyl phthalate
Di-n-octyl phthalate
Dibenzo (a,h) anthracene
1,2-dichlorobenzene
1,3-dichlorobenzene
1,4-dichlorobenzene
3,3-dichlorobenzidine
Diethyl phthalate
Dimethyl phthalate
2,4-dinitrotoluene
2,6-dinitrotoluene
1,2-diphenylhydrazine
Fluoranthene
Fluorene
Hexachlorobenzene
Hexachlorobutadiene
Hexachlorocyclo-pentadiene
Hexachloroethane
Indeno(1,2,3-cd)pyrene
Isophorone
Naphthalene
Nitrobenzene
N-nitrosodi-n-propylamine
N-nitrosodimethylamine
N-nitrosodiphenylamine
Phenanthrene
Pyrene
1,2,4-trichlorobenzene
34273
34283
C0100
34636
34292
34581
34641
34320
39110
34596
34556
34536
34566
34571
34631
34336
34341
34611
C0626
34346
C0376
34381
C0700
C0702
34386
34396
34403
34408
34696
34447
34428
34438
34433
34461
34469
C0551
Reporting. Test results shall be reported electronically using the Division's eDMR system or on DWR
Form DMR-PPA-1(or on a form approved by the Director) by December 31st of each designated sampling
year.
Page 19 of 25

DocuSign Envelope ID: 3D7E3FEB-A3FF-4FF6-AI AD-F59B27F0D696
NPDES Permit NC0020354
The Permittee must at least report completion of the test in the eDMR system by entering "1" or "Y" for
parameter code NC01 - Annual Pollutant Scan. If utilizing the DWR Form submit to the following
address:
NC DEQ/ DWR/ NPDES Files, 1617 Mail Service Center, Raleigh, North Carolina 27699-1617.
Or the form may be uploaded at: https://edocs.deq.nc.gov/Forms/NPDES_WW-EDMR-Supplemental-
Form
Additional Toxicity Testing Requirements for Municipal Permit Renewal. Please note that
Municipal facilities that are subject to the Effluent Pollutant Scan requirements listed above are also
subject to additional toxicity testing requirements specified in Federal Regulation 40 CFR 122.21(j)(5).
The US EPA requires four (4) toxicity tests for a test organism other than the test species currently
required in this permit. The multiple species tests should be conducted either quarterly for a 12-month
period prior to submittal of the permit renewal application, or four tests performed at least annually in
the four and one half year period prior to the application. These tests shall be performed for acute or
chronic toxicity, whichever is specified in this permit. The multiple species toxicity test results shall be
filed with the Aquatic Toxicology Branch at the following address:
North Carolina Division of Water Resources
Water Sciences Section/Aquatic Toxicology Branch
1621 Mail Service Center
Raleigh, North Carolina 27699-1621
Or, results can be sent to the email, [e-mail].
Contact the Division's Aquatic Toxicology Branch at 919-743-8401 for guidance on conducting the
additional toxicity tests and reporting requirements. Results should also be summarized in Part E
(Toxicity Testing Data) of EPA Municipal Application Form 2A, when submitting the permit renewal
application to the NPDES Permitting Unit.
Page 20 of 25

DocuSign Envelope ID: 3D7E3FEB-A3FF-4FF6-AI AD-F59B27F0D696
NPDES Permit NC0020354
A.(12.) SCHEDULE OF COMPLIANCE FOR TOTAL COPPER, AMMONIA AND
NITRATE LIMITATIONS (OUTFALL 001A)
[G.S. 143-215.1(b)]
1. By June 1, 2022, the permittee shall submit to the Division of Water Resources an Action Plan,
for Division approval, summarizing the strategy or actions to be taken to achieve compliance
with the Total Copper, Nitrate and revised Ammonia limitations listed in Section A.(2.). The
plan will include specific dates for completion or implementation of each action. The Action
Plan may include dates for decommissioning of the Pittsboro WWTP.
2. By June 1, 2023, the permittee shall submit a report to the Division summarizing actions taken
in accordance with the Action Plan.
3. The permittee shall achieve compliance with Total Copper, Nitrate and revised Ammonia
limitations specified in Section A.(2.) by June 1, 2024.
Any modifications to the schedule shall be requested to the Division at least ninety (90) days before the
deadline. Modifications to the schedule in excess of four (4) months will be subject to public notice.
The Action Plan and Reports shall include the owner's name, NPDES permit number and permittee
contact person, and shall be submitted to:
(1) NCDEQ / Division of Water Resources
NPDES Municipal Permitting
1617 Mail Service Center
Raleigh, NC 27699-1617
(2) NCDEQ / Division of Water Resources
Raleigh Regional Office
3800 Barrett Drive
Raleigh, NC 27609
A. (13.) ELECTRONIC REPORTING OF DISCHARGE MONITORING REPORTS
[G.S. 143-215.1(b)]
Federal regulations require electronic submittal of all discharge monitoring reports (DMRs) and
program reports. The final NPDES Electronic Reporting Rule was adopted and became effective on
December 21, 2015.
NOTE: This special condition supplements or supersedes the following sections within Part II of this
permit (Standard Conditions for NPDES Permits):
• Section B. (11.)
• Section D. (2.)
• Section D. (6.)
• Section E. (5.)
Signatory Requirements
Reporting
Records Retention
Monitoring Reports
1. Reporting Requirements [Supersedes Section D. (2.) and Section E. (5.) (a)]
The permittee shall report discharge monitoring data electronically using the NC DWR's Electronic
Discharge Monitoring Report (eDMR) internet application.
Monitoring results obtained during the previous month(s) shall be summarized for each month and
submitted electronically using eDMR. The eDMR system allows permitted facilities to enter
Page 21 of 25

DocuSign Envelope ID: 3D7E3FEB-A3FF-4FF6-AI AD-F59B27F0D696
NPDES Permit NC0020354
monitoring data and submit DMRs electronically using the internet. The eDMR system may be
accessed at: https://deq.nc.gov/about/divisions/water-resources/edmr.
If a permittee is unable to use the eDMR system due to a demonstrated hardship or due to the
facility being physically located in an area where less than 10 percent of the households have
broadband access, then a temporary waiver from the NPDES electronic reporting requirements
may be granted and discharge monitoring data may be submitted on paper DMR forms (MR 1,1.1,
2, 3) or alternative forms approved by the Director. Duplicate signed copies shall be submitted to
the following address:
NC DEQ / Division of Water Resources / Water Quality Permitting Section
ATTENTION: Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
See "How to Request a Waiver from Electronic Reporting" section below.
Regardless of the submission method, the first DMR is due on the last day of the month following
the issuance of the permit or in the case of a new facility, on the last day of the month following the
commencement of discharge.
Starting on December 21, 2025, the permittee must electronically report the following compliance
monitoring data and reports, when applicable:
• Sewer Overflow/Bypass Event Reports;
• Pretreatment Program Annual Reports; and
• Clean Water Act (CWA) Section 316(b) Annual Reports.
The permittee may seek an electronic reporting waiver from the Division (see "How to Request a
Waiver from Electronic Reporting" section below).
2. Electronic Submissions
In accordance with 40 CFR 122.41(1)(9), the permittee must identify the initial recipient at the time
of each electronic submission. The permittee should use the EPA's website resources to identify the
initial recipient for the electronic submission.
Initial recipient of electronic NPDES information from NPDES-regulated facilities means the entity
(EPA or the state authorized by EPA to implement the NPDES program) that is the designated
entity for receiving electronic NPDES data [see 40 CFR 127.2(b)].
EPA plans to establish a website that will also link to the appropriate electronic reporting tool for
each type of electronic submission and for each state. Instructions on how to access and use the
appropriate electronic reporting tool will be available as well. Information on EPA's NPDES
Electronic Reporting Rule is found at:
https:/ /www.federalregister.gov/ documents/ 2015/10/ 22/2015-24954/national-pollutant-
discharge-elimination-system-npdes-electronic-reporting-rule
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Electronic submissions must start by the dates listed in the "Reporting Requirements" section
above.
3. How to Request a Waiver from Electronic Reporting
The permittee may seek a temporary electronic reporting waiver from the Division. To obtain an
electronic reporting waiver, a permittee must first submit an electronic reporting waiver request to
the Division. Requests for temporary electronic reporting waivers must be submitted in writing to
the Division for written approval at least sixty (60) days prior to the date the facility would be
required under this permit to begin submitting monitoring data and reports. The duration of a
temporary waiver shall not exceed 5 years and shall thereupon expire. At such time, monitoring
data and reports shall be submitted electronically to the Division unless the permittee re -applies for
and is granted a new temporary electronic reporting waiver by the Division. Approved electronic
reporting waivers are not transferrable. Only permittees with an approved reporting waiver
request may submit monitoring data and reports on paper to the Division for the period that the
approved reporting waiver request is effective.
Information on eDMR and the application for a temporary electronic reporting waiver are found on
the following web page:
http: / /deq.nc.gov/about/divisions/water-resources/edmr
4. Signatory Requirements [Supplements Section B. (11.) (b) and Supersedes Section B. (11.) (d)1
All eDMRs submitted to the permit issuing authority shall be signed by a person described in Part
II, Section B. (11.)(a) or by a duly authorized representative of that person as described in Part II,
Section B. (11.)(b). A person, and not a position, must be delegated signatory authority for eDMR
reporting purposes.
For eDMR submissions, the person signing and submitting the DMR must obtain an eDMR user
account and login credentials to access the eDMR system. For more information on North
Carolina's eDMR system, registering for eDMR and obtaining an eDMR user account, please visit
the following web page:
http:/ / deq.nc.gov/ about/ divisions/water-resources/edmr
Certification. Any person submitting an electronic DMR using the state's eDMR system shall make
the following certification [40 CFR 122.22]. NO OTHER STATEMENTS OF CERTIFICATION WILL
BE ACCEPTED:
"I certify, under penalty of law, that this document and all attachments were prepared under my direction or
supervision in accordance with a system designed to assure that qualified personnel properly gather and
evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or
those persons directly responsible for gathering the information, the information submitted is, to the best of
my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for
submitting false information, including the possibility of fines and imprisonment for knowing violations."
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5. Records Retention [Supplements Section D. (6.)]
The permittee shall retain records of all Discharge Monitoring Reports, including eDMR
submissions. These records or copies shall be maintained for a period of at least 3 years from the
date of the report. This period may be extended by request of the Director at any time [40 CFR
122.41].
A. (14.) EFFLUENT SAMPLING CLARIFICATION
[G.S. 143-215.1(b)]
Samples collected and measurements taken shall be representative of the permitted discharge. Samples
collected at a frequency less than daily shall be taken on a day and time that is representative of the
discharge for the period the sample represents. All samples shall be taken at the monitoring points
specified in this permit and, unless otherwise specified, before the effluent joins or is diluted by any
other wastestream, body of water, or substance. Monitoring points shall not be changed without
notification to and the approval of the Division.
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n+
A
Town of Pittsboro WWTP •
Outfall 001 A &001 B
Robeson Creek
Outfall002
Haw River
NC0020354 Town of Pittsboro WWTP and Chatham Park
Investors LLC Chatham Park Water Recovery Center
Receiving Streams : Outfall 001A and 001B-Robeson Creek;
Outfall 002-Haw River
Outfall 001 A & 001B
Latitude : 35°42'48";
Longitude: 79°10'14",
Quad #: E22NW, Pittsboro
Stream Class: WS-IV, NSW (both)
Outfall 002
354— 35O
79°06'23
Sub -Basin: 03-06-04
8-Digit HUC: 03030002
Facility x
Location
North
Town of Pittsboro
Chatham County
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PART II
STANDARD CONDITIONS FOR NPDES PERMITS
Section A. Definitions
2/Month
Samples are collected twice per month with at least ten calendar days between sampling events. These samples shall be
representative of the wastewater discharged during the sample period.
3/Week
Samples are collected three times per week on three separate calendar days. These samples shall be representative of
the wastewater discharged during the sample period.
Act or "the Act"
The Federal Water Pollution Control Act, also known as the Clean Water Act (CWA), as amended, 33 USC 1251, et.
seq.
Annual Average
The arithmetic mean of all "daily discharges" of a pollutant measured during the calendar year. In the case of fecal
coliform, the geometric mean of such discharges.
Arithmetic Mean
The summation of the individual values divided by the number of individual values.
Bypass
The known diversion of waste streams from any portion of a treatment facility including the collection system, which is
not a designed or established or operating mode for the facility.
Calendar Day
The period from midnight of one day until midnight of the next day. However, for purposes of this permit, any
consecutive 24-hour period that reasonably represents the calendar day may be used for sampling.
Calendar Week
The period from Sunday through the following Saturday.
Calendar Quarter
One of the following distinct periods: January through March, April through June, July through September, and
October through December.
Composite Sample
A sample collected over a 24-hour period by continuous sampling or combining grab samples of at least 100 mL in
such a manner as to result in a total sample representative of the wastewater discharge during the sample period. The
Director may designate the most appropriate method (specific number and size of aliquots necessary, the time interval
between grab samples, etc.) on a case -by -case basis. Samples may be collected manually or automatically. Composite
samples may be obtained by the following methods:
(1) Continuous: a single, continuous sample collected over a 24-hour period proportional to the rate of flow.
(2) Constant time/variable volume: a series of grab samples collected at equal time intervals over a 24 hour period
of discharge and combined proportional to the rate of flow measured at the time of individual sample
collection, or
Variable time/constant volume: a series of grab samples of equal volume collected over a 24 hour period with
the time intervals between samples determined by a preset number of gallons passing the sampling point. Flow
measurement between sample intervals shall be determined by use of a flow recorder and totalizer, and the
preset gallon interval between sample collection fixed at no greater than 1/24 of the expected total daily flow at
the treatment system, or
(3)
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(4) Constant time/constant volume: a series of grab samples of equal volume collected over a 24-hour period at a
constant time interval. Use of this method requires prior approval by the Director. This method may only be
used in situations where effluent flow rates vary less than 15 percent. The following restrictions also apply:
➢ Influent and effluent grab samples shall be of equal size and of no less than 100 milliliters
➢ Influent samples shall not be collected more than once per hour.
➢ Permittees with wastewater treatment systems whose detention time < 24 hours shall collect effluent grab
samples at intervals of no greater than 20 minutes apart during any 24-hour period.
➢ Permittees with wastewater treatment systems whose detention time exceeds 24 hours shall collect effluent
grab samples at least every six hours; there must be a minimum of four samples during a 24-hour sampling
period.
Continuous flow measurement
Flow monitoring that occurs without interruption throughout the operating hours of the facility. Flow shall be
monitored continually except for the infrequent times when there may be no flow or for infrequent maintenance
activities on the flow device.
Daily Discharge
The discharge of a pollutant measured during a calendar day or any 24-hour period that reasonably represents the
calendar day for purposes of sampling. For pollutants measured in units of mass, the "daily discharge" is calculated as
the total mass of the pollutant discharged over the day. For pollutants expressed in other units of measurement, the
"daily discharge" is calculated as the average measurement of the pollutant over the day. (40 CFR 122.2; see also
"Composite Sample," above.)
Daily Maximum
The highest "daily discharge" during the calendar month.
Daily Sampling
Parameters requiring daily sampling shall be sampled 5 out of every 7 days per week unless otherwise specified in the
permit. Sampling shall be conducted on weekdays except where holidays or other disruptions of normal operations
prevent weekday sampling. If sampling is required for all seven days of the week for any permit parameter(s), that
requirement will be so noted on the Effluent Limitations and Monitoring Page(s).
DWR or "the Division"
The Division of Water Resources, Department of Environmental Quality.
Effluent
Wastewater discharged following all treatment processes from a water pollution control facility or other point source
whether treated or untreated.
EMC
The North Carolina Environmental Management Commission
EPA
The United States Environmental Protection Agency
Facility Closure
Cessation of all activities that require coverage under this NPDES permit. Completion of facility closure will allow this
permit to be rescinded.
Geometric Mean
The Nth root of the product of the individual values where N = the number of individual values. For purposes of
calculating the geometric mean, values of "0" (or "< [detection level]") shall be considered = 1.
Grab Sample
Individual samples of at least 100 mL collected over a period of time not exceeding 15 minutes. Grab samples can be
collected manually. Grab samples must be representative of the discharge (or the receiving stream, for instream
samples).
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Hazardous Substance
Any substance designated under 40 CFR Part 116 pursuant to Section 311 of the CWA.
Instantaneous flow measurement
The flow measured during the minimum time required for the flow measuring device or method to produce a result in
that instance. To the extent practical, instantaneous flow measurements coincide with the collection of any grab
samples required for the same sampling period so that together the samples and flow are representative of the discharge
during that sampling period.
Monthly Average (concentration limit)
The arithmetic mean of all "daily discharges" of a pollutant measured during the calendar month. In the case of fecal
coliform or other bacterial parameters or indicators, the geometric mean of such discharges.
Permit Issuing Authority
The Director of the Division of Water Resources.
Quarterly Average (concentration limit)
The arithmetic mean of all samples taken over a calendar quarter.
Severe property damage
Substantial physical damage to property, damage to the treatment facilities which causes them to become inoperable, or
substantial and permanent loss of natural resources which can reasonably be expected to occur in the absence of a
bypass. Severe property damage excludes economic loss caused by delays in production.
Toxic Pollutant:
Any pollutant listed as toxic under Section 307(a)(1) of the CWA.
Upset
An incident beyond the reasonable control of the Permittee causing unintentional and temporary noncompliance with
permit effluent limitations and/or monitoring requirements. An upset does not include noncompliance caused by
operational error, improperly designed treatment facilities, inadequate treatment facilities, lack of preventive
maintenance, or careless or improper operation.
Weekly Average (concentration limit)
The arithmetic mean of all "daily discharges" of a pollutant measured during the calendar week. In the case of fecal
coliform or other bacterial parameters or indicators, the geometric mean of such discharges.
Section B. General Conditions
1. Duty to Comply
The Permittee must comply with all conditions of this permit. Any permit noncompliance constitutes a violation of
the CWA and is grounds for enforcement action; for permit termination, revocation and reissuance, or
modification; or denial of a permit renewal application [40 CFR 122.41].
a. The Permittee shall comply with effluent standards or prohibitions established under section 307(a) of the
CWA for toxic pollutants and with standards for sewage sludge use or disposal established under section
405(d) of the CWA within the time provided in the regulations that establish these standards or prohibitions or
standards for sewage sludge use or disposal, even if the permit has not yet been modified to incorporate the
requirement.
b. The CWA provides that any person who violates section[s] 301, 302, 306, 307, 308, 318 or 405 of the Act, or
any permit condition or limitation implementing any such sections in a permit issued under section 402, or any
requirement imposed in a pretreatment program approved under sections 402(a)(3) or 402(b)(8) of the Act, is
subject to a civil penalty not to exceed $37,500 per day for each violation. [33 USC 1319(d) and 40 CFR
122.41(a)(2)]
c. The CWA provides that any person who negligently violates sections 301, 302, 306, 307, 308, 318, or 405 of
the Act, or any condition or limitation implementing any of such sections in a permit issued under section 402
of the Act, or any requirement imposed in a pretreatment program approved under section 402(a)(3) or
402(b)(8) of the Act, is subject to criminal penalties of $2,500 to $25,000 per day of violation, or
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imprisonment of not more than 1 year, or both. In the case of a second or subsequent conviction for a negligent
violation, a person shall be subject to criminal penalties of not more than $50,000 per day of violation, or by
imprisonment of not more than 2 years, or both. [33 USC 1319(c)(1) and 40 CFR 122.41(a)(2)]
d. Any person who knowingly violates such sections, or such conditions or limitations is subject to criminal
penalties of $5,000 to $50,000 per day of violation, or imprisonment for not more than 3 years, or both. In the
case of a second or subsequent conviction for a knowing violation, a person shall be subject to criminal
penalties of not more than $100,000 per day of violation, or imprisonment of not more than 6 years, or both.
[33 USC 1319(c)(2) and 40 CFR 122.41(a)(2)]
e. Any person who knowingly violates section 301, 302, 303, 306, 307, 308, 318 or 405 of the Act, or any permit
condition or limitation implementing any of such sections in a permit issued under section 402 of the Act, and
who knows at that time that he thereby places another person in imminent danger of death or serious bodily
injury, shall, upon conviction, be subject to a fme of not more than $250,000 or imprisonment of not more than
15 years, or both. In the case of a second or subsequent conviction for a knowing endangerment violation, a
person shall be subject to a fme of not more than $500,000 or by imprisonment of not more than 30 years, or
both. An organization, as defined in section 309(c)(3)(B)(iii) of the CWA, shall, upon conviction of violating
the imminent danger provision, be subject to a fme of not more than $1,000,000 and can be fined up to
$2,000,000 for second or subsequent convictions. [40 CFR 122.41(a)(2)]
f. Under state law, a civil penalty of not more than $25,000 per violation may be assessed against any person
who violates or fails to act in accordance with the terms, conditions, or requirements of a permit. [North
Carolina General Statutes § 143-215.6A]
Any person may be assessed an administrative penalty by the Administrator for violating section 301, 302,
306, 307, 308, 318 or 405 of this Act, or any permit condition or limitation implementing any of such sections
in a permit issued under section 402 of this Act Administrative penalties for Class I violations are not to
exceed $16,000 per violation, with the maximum amount of any Class I penalty assessed not to exceed
$37,500. Penalties for Class II violations are not to exceed $16,000 per day for each day during which the
violation continues, with the maximum amount of any Class II penalty not to exceed $177,500. [33 USC
1319(g)(2) and 40 CFR 122.41(a)(3)]
2. Duty to Mitigate
The Permittee shall take all reasonable steps to minimize or prevent any discharge or sludge use or disposal in
violation of this permit with a reasonable likelihood of adversely affecting human health or the environment [40
CFR 122.41(d)].
3. Civil and Criminal Liability
Except as provided in permit conditions on 'Bypassing" (Part II.C.4), "Upsets" (Part II.C.5) and 'Power Failures"
(Part II.C.7), nothing in this permit shall be construed to relieve the Permittee from any responsibilities, liabilities,
or penalties for noncompliance pursuant to NCGS 143-215.3, 143-215.6 or Section 309 of the Federal Act, 33 USC
1319. Furthermore, the Permittee is responsible for consequential damages, such as fish kills, even though the
responsibility for effective compliance may be temporarily suspended.
4. Oil and Hazardous Substance Liability
Nothing in this permit shall be construed to preclude the institution of any legal action or relieve the Permittee
from any responsibilities, liabilities, or penalties to which the Permittee is or may be subject to under NCGS 143-
215.75 et seq. or Section 311 of the Federal Act, 33 USG 1321. Furthermore, the Permittee is responsible for
consequential damages, such as fish kills, even though the responsibility for effective compliance may be
temporarily suspended.
5. Property Rights
The issuance of this permit does not convey any property rights in either real or personal property, or any exclusive
privileges, nor does it authorize any injury to private property or any invasion of personal rights, nor any
infringement of Federal, State or local laws or regulations [40 CFR 122.41(g)].
6. Onshore or Offshore Construction
This permit does not authorize or approve the construction of any onshore or offshore physical structures or
facilities or the undertaking of any work in any navigable waters.
g.
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7. Severability
The provisions of this permit are severable. If any provision of this permit, or the application of any provision of
this permit to any circumstances, is held invalid, the application of such provision to other circumstances, and the
remainder of this permit, shall not be affected thereby [NCGS 150B-23].
8. Duty to Provide Information
The Permittee shall furnish to the Permit Issuing Authority, within a reasonable time, any information which the
Permit Issuing Authority may request to determine whether cause exists for modifying, revoking and reissuing, or
terminating this permit or to determine compliance with this permit. The Permittee shall also furnish to the Permit
Issuing Authority upon request, copies of records required by this permit [40 CFR 122.41(h)].
9. Duty to Reapply
If the Permittee wishes to continue an activity regulated by this permit after the expiration date of this permit, the
Permittee must apply for and obtain a new permit [40 CFR 122.41(b)].
10. Expiration of Permit
The Permittee is not authorized to discharge after the expiration date. In order to receive automatic authorization to
discharge beyond the expiration date, the Permittee shall submit such information, forms, and fees as are required
by the agency authorized to issue permits no later than 180 days prior to the expiration date unless permission for a
later date has been granted by the Director. (The Director shall not grant permission for applications to be
submitted later than the expiration date of the existing permit.) [40 CFR 122.21(d)] Any Permittee that has not
requested renewal at least 180 days prior to expiration, or any Permittee that does not have a permit after the
expiration and has not requested renewal at least 180 days prior to expiration, will subject the Permittee to
enforcement procedures as provided in NCGS 143-215.6 and 33 USC 1251 et. seq.
11. Signatory Requirements
All applications, reports, or information submitted to the Permit Issuing Authority shall be signed and certified [40
CFR 122.41(k)].
a. All permit applications shall be signed as follows:
(1) For a corporation: by a responsible corporate officer. For the purpose of this Section, a responsible
corporate officer means: (a) a president, secretary, treasurer or vice president of the corporation in charge
of a principal business function, or any other person who performs similar policy or decision making
functions for the corporation, or (b) the manager of one or more manufacturing, production, or operating
facilities, provided, the manager is authorized to make management decisions which govern the operation
of the regulated facility including having the explicit or implicit duty of making major capital investment
recommendations, and initiating and directing other comprehensive measures to assure long term
environmental compliance with environmental laws and regulations; the manager can ensure that the
necessary systems are established or actions taken to gather complete and accurate information for permit
application requirements; and where authority to sign documents has been assigned or delegated to the
manager in accordance with corporate procedures .
(2) For a partnership or sole proprietorship: by a general partner or the proprietor, respectively; or
(3) For a municipality, State, Federal, or other public agency: by either a principal executive officer or
ranking elected official [40 CFR 122.22].
b. All reports required by the permit and other information requested by the Permit Issuing Authority shall be
signed by a person described in paragraph a. above or by a duly authorized representative of that person. A
person is a duly authorized representative only if:
(1) The authorization is made in writing by a person described above;
(2) The authorization specified either an individual or a position having responsibility for the overall operation
of the regulated facility or activity, such as the position of plant manager, operator of a well or well field,
superintendent, a position of equivalent responsibility, or an individual or position having overall
responsibility for environmental matters for the company. (A duly authorized representative may thus be
either a named individual or any individual occupying a named position.); and
(3) The written authorization is submitted to the Permit Issuing Authority [40 CFR 122.22]
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c. Changes to authorization: If an authorization under paragraph (b) of this section is no longer accurate because
a different individual or position has responsibility for the overall operation of the facility, a new authorization
satisfying the requirements of paragraph (b) of this section must be submitted to the Director prior to or
together with any reports, information, or applications to be signed by an authorized representative [40 CFR
122.22]
d. Certification. Any person signing a document under paragraphs a. or b. of this section shall make the following
certification [40 CFR 122.22]. NO OTHER STATEMENTS OF CERTIFICATION WILL BE ACCEPTED:
"1 certi& under penalty of law, that this document and all attachments were prepared under my direction or
supervision in accordance with a system designed to assure that qualified personnel properly gather and
evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or
those persons directly responsible for gathering the information, the information submitted is, to the best of my
knowledge and belief true, accurate, and complete. I am aware that there are significant penalties for
submitting false information, including the possibility of fines and imprisonment for knowing violations."
12. Permit Actions
This permit may be modified, revoked and reissued, or terminated for cause. The filing of a request by the
Permittee for a permit modification, revocation and reissuance, or termination, or a notification of planned changes
or anticipated noncompliance does not stay any permit condition [40 CFR 122.41(f)].
13. Permit Modification, Revocation and Reissuance, or Termination
The issuance of this permit does not prohibit the permit issuing authority from reopening and modifying the permit,
revoking and reissuing the permit, or terminating the permit as allowed by the laws, rules, and regulations
contained in Title 40, Code of Federal Regulations, Parts 122 and 123; Title 15A of the North Carolina
Administrative Code, Subchapter 02H .0100; and North Carolina General Statute 143.215.1 et. al.
14. Annual Administering and Compliance Monitoring Fee Requirements
The Permittee must pay the annual administering and compliance monitoring fee within thirty days after being
billed by the Division. Failure to pay the fee in a timely manner in accordance with 15A NCAC 02H .0105(b)(2)
may cause this Division to initiate action to revoke the permit.
Section C. Operation and Maintenance of Pollution Controls
1. Certified Operator
Owners of classified water pollution control systems must designate operators, certified by the Water Pollution
Control System Operators Certification Commission (WPCSOCC), of the appropriate type and grade for the
system, and, for each classification must [T15A NCAC 08G .02011:
a. designate one Operator In Responsible Charge (ORC) who possesses a valid certificate of the type and grade at
least equivalent to the type and grade of the system;
b. designate one or more Back-up Operator(s) in Responsible Charge (Back-up ORCs) who possesses a valid
certificate of the type of the system and no more than one grade less than the grade of the system, with the
exception of no backup operator in responsible charge is required for systems whose minimum visitation
requirements are twice per year; and
c. submit a signed completed "Water Pollution Control System Operator Designation Form" to the Commission
(or to the local health department for owners of subsurface systems) countersigned by the designated certified
operators, designating the Operator in Responsible Charge (ORC) and the Back-up Operator in Responsible
Charge (Back-up ORC):
(1) 60 calendar days prior to wastewater or residuals being introduced into a new system; or
(2) within 120 calendar days following:
➢ receiving notification of a change in the classification of the system requiring the designation of a new
Operator in Responsible Charge (ORC) and Back-up Operator in Responsible Charge (Back-up ORC)
of the proper type and grade; or
➢ a vacancy in the position of Operator in Responsible Charge (ORC) or Back-up Operator in
Responsible Charge (Back-up ORC).
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(3) within seven calendar days of vacancies in both ORC and Back-up ORC positions replacing or designating
at least one of the responsibilities.
The ORC of each Class I facility (or the Back-up ORC, when acting as surrogate for the ORC) must:
➢ Visit the facility as often as is necessary to insure proper operation of the treatment system; the treatment
facility must be visited at least weekly
➢ Comply with all other conditions of 15A NCAC 08G .0204.
The ORC of each Class II, III and IV facility (or the Back-up ORC, when acting as surrogate for the ORC) must:
➢ Visit the facility as often as is necessary to insure proper operation of the treatment system; the treatment
facility must be visited at least five days per week, excluding holidays
➢ Properly manage and document daily operation and maintenance of the facility
➢ Comply with all other conditions of 15A NCAC 08G .0204.
2. Proper Operation and Maintenance
The Permittee shall at all times properly operate and maintain all facilities and systems of treatment and control
(and related appurtenances) which are installed or used by the Permittee to achieve compliance with the conditions
of this permit. Proper operation and maintenance also includes adequate laboratory controls and appropriate quality
assurance procedures. This provision requires the Permittee to install and operate backup or auxiliary facilities only
when necessary to achieve compliance with the conditions of the permit [40 CFR 122.41(e)].
NOTE: Properly and officially designated operators are fully responsible for all proper operation and maintenance
of the facility, and all documentation required thereof, whether acting as a contract operator [subcontractor] or a
member of the Permittee's staff.
3. Need to Halt or Reduce not a Defense
It shall not be a defense for a Permittee in an enforcement action that it would have been necessary to halt or
reduce the permitted activity in order to maintain compliance with the condition of this permit [40 CFR 122.41(c)].
4. Bypassing of Treatment Facilities
a. Bypass not exceeding limitations [40 CFR 122.41(m)(2)]
The Permittee may allow any bypass to occur which does not cause effluent limitations to be exceeded, but
only if it also is for essential maintenance to assure efficient operation. These bypasses are not subject to the
provisions of Paragraphs b. and c. of this section.
b. Notice [40 CFR 122.41(m)(3)]
(1) Anticipated bypass. If the Permittee knows in advance of the need for a bypass, it shall submit prior notice,
if possible at least ten days before the date of the bypass; including an evaluation of the anticipated quality
and effect of the bypass.
(2) Unanticipated bypass. The Permittee shall submit notice of an unanticipated bypass as required in Part
II.E.6. (24-hour notice).
c. Prohibition of Bypass
(1) Bypass from the treatment facility is prohibited and the Permit Issuing Authority may take enforcement
action against a Permittee for bypass, unless:
(A) Bypass was unavoidable to prevent loss of life, personal injury or severe property damage;
(B) There were no feasible alternatives to the bypass, such as the use of auxiliary treatment facilities,
retention of untreated wastes or maintenance during normal periods of equipment downtime. This
condition is not satisfied if adequate backup equipment should have been installed in the exercise of
reasonable engineering judgment to prevent a bypass which occurred during normal periods of
equipment downtime or preventive maintenance; and
(C) The Permittee submitted notices as required under Paragraph b. of this section.
(2) Bypass from the collection system is prohibited and the Permit Issuing Authority may take enforcement
action against a Permittee for a bypass as provided in any current or future system -wide collection system
permit associated with the treatment facility.
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(3) The Permit Issuing Authority may approve an anticipated bypass, after considering its adverse effects, if
the Permit Issuing Authority determines that it will meet the three conditions listed above in Paragraph c.
(1) of this section.
5. Upsets
a. Effect of an upset [40 CFR 122.41(n)(2)]: An upset constitutes an affirmative defense to an action brought for
noncompliance with such technology based permit effluent limitations if the requirements of paragraph b. of
this condition are met. No determination made during administrative review of claims that noncompliance was
caused by upset, and before an action for noncompliance, is fmal administrative action subject to judicial
review.
b. Conditions necessary for a demonstration of upset: Any Permittee who wishes to establish the affirmative
defense of upset shall demonstrate, through properly signed, contemporaneous operating logs, or other relevant
evidence that:
(1) An upset occurred and that the Permittee can identify the cause(s) of the upset;
(2) The Permittee facility was at the time being properly operated; and
(3) The Permittee submitted notice of the upset as required in Part II.E.6.(b) of this permit.
(4) The Permittee complied with any remedial measures required under Part II.B.2. of this permit.
c. Burden of proof [40 CFR 122.41(n)(4)]: The Permittee seeking to establish the occurrence of an upset has
the burden of proof in any enforcement proceeding.
6. Removed Substances
Solids, sludges, filter backwash, or other pollutants removed in the course of treatment or control of wastewaters
shall be utilized/disposed of in accordance with NCGS 143-215.1 and in a manner such as to prevent any pollutant
from such materials from entering waters of the State or navigable waters of the United States except as permitted
by the Commission. The Permittee shall comply with all applicable state and Federal regulations governing the
disposal of sewage sludge, including 40 CFR 503, Standards for the Use and Disposal of Sewage Sludge; 40 CFR
Part 258, Criteria For Municipal Solid Waste Landfills; and 15A NCAC Subchapter 2T, Waste Not Discharged To
Surface Waters. The Permittee shall notify the Permit Issuing Authority of any significant change in its sludge use
or disposal practices.
7. Power Failures
The Permittee is responsible for maintaining adequate safeguards (as required by 15A NCAC 02H .0124) to
prevent the discharge of untreated or inadequately treated wastes during electrical power failures either by means
of alternate power sources, standby generators or retention of inadequately treated effluent.
Section D. Monitoring and Records
1. Representative Sampling
Samples collected and measurements taken, as required herein, shall be representative of the permitted discharge.
Samples collected at a frequency less than daily shall be taken on a day and time that is representative of the
discharge for the period the sample represents. All samples shall be taken at the monitoring points specified in this
permit and, unless otherwise specified, before the effluent joins or is diluted by any other wastestream, body of
water, or substance. Monitoring points shall not be changed without notification to and the approval of the Permit
Issuing Authority [40 CFR 122.41(j)].
2. Reporting
Monitoring results obtained during the previous month(s) shall be summarized for each month and reported on a
monthly Discharge Monitoring Report (DMR) Form (MR 1, 1.1, 2, 3) or alternative forms approved by the
Director, postmarked no later than the last calendar day of the month following the completed reporting period.
The first DMR is due on the last day of the month following the issuance of the permit or in the case of a new
facility, on the last day of the month following the commencement of discharge. Duplicate signed copies of these,
and all other reports required herein, shall be submitted to the following address:
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NC DEQ / Division of Water Resources / Water Quality Permitting Section
ATTENTION: Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
3. Flow Measurements
Appropriate flow measurement devices and methods consistent with accepted scientific practices shall be selected
and used to ensure the accuracy and reliability of measurements of the volume of monitored discharges. The
devices shall be installed, calibrated and maintained to ensure that the accuracy of the measurements is consistent
with the accepted capability of that type of device. Devices selected shall be capable of measuring flows with a
maximum deviation of less than 10% from the true discharge rates throughout the range of expected discharge
volumes. Flow measurement devices shall be accurately calibrated at a minimum of once per year and maintained
to ensure that the accuracy of the measurements is consistent with the accepted capability of that type of device.
The Director shall approve the flow measurement device and monitoring location prior to installation.
Once -through condenser cooling water flow monitored by pump logs, or pump hour meters as specified in Part I of
this permit and based on the manufacturer's pump curves shall not be subject to this requirement.
4. Test Procedures
Laboratories used for sample analysis must be certified by the Division. Permittees should contact the Division's
Laboratory Certification Section (919 733-3908) or visit https://deq.nc.gov/about/divisions/water-resources/water-
resources-data/water-sciences-home-page/laboratory-certification-branch for information regarding laboratory
certifications.
Facilities whose personnel are conducting testing of field -certified parameters only must hold the appropriate field
parameter laboratory certifications.
Test procedures for the analysis of pollutants shall conform to the EMC regulations (published pursuant to NCGS
143-215.63 et. seq.), the Water and Air Quality Reporting Acts, and to regulations published pursuant to Section
304(g), 33 USC 1314, of the CWA (as amended), and 40 CFR 136; or in the case of sludge use or disposal,
approved under 40 CFR 136, unless otherwise specified in 40 CFR 503, unless other test procedures have been
specified in this permit [40 CFR 122.41].
To meet the intent of the monitoring required by this permit, all test procedures must produce minimum detection
and reporting levels that are below the permit discharge requirements and all data generated must be reported down
to the minimum detection or lower reporting level of the procedure. If no approved methods are determined
capable of achieving minimum detection and reporting levels below permit discharge requirements, then the most
sensitive (method with the lowest possible detection and reporting level) approved method must be used.
5. Penalties for Tampering
The CWA provides that any person who falsifies, tampers with, or knowingly renders inaccurate, any monitoring
device or method required to be maintained under this permit shall, upon conviction, be punished by a fme of not
more than $10,000 per violation, or by imprisonment for not more than two years per violation, or by both. If a
conviction of a person is for a violation committed after a first conviction of such person under this paragraph,
punishment is a fme of not more than $20,000 per day of violation, or by imprisonment of not more than 4 years,
or both [40 CFR 122.41].
6. Records Retention
Except for records of monitoring information required by this permit related to the Permittee's sewage sludge use
and disposal activities, which shall be retained for a period of at least five years (or longer as required by 40 CFR
503), the Permittee shall retain records of all monitoring information, including:
➢ all calibration and maintenance records
➢ all original strip chart recordings for continuous monitoring instrumentation
➢ copies of all reports required by this permit
➢ copies of all data used to complete the application for this permit
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These records or copies shall be maintained for a period of at least 3 years from the date of the sample,
measurement, report or application. This period may be extended by request of the Director at any time [40 CFR
122.41].
7. Recording Results
For each measurement or sample taken pursuant to the requirements of this permit, the Permittee shall record the
following information [40 CFR 122.41]:
a. The date, exact place, and time of sampling or measurements;
b. The individual(s) who performed the sampling or measurements;
c. The date(s) analyses were performed;
d. The individual(s) who performed the analyses;
e. The analytical techniques or methods used; and
f. The results of such analyses.
8. Inspection and Entry
The Permittee shall allow the Director, or an authorized representative (including an authorized contractor acting as
a representative of the Director), upon the presentation of credentials and other documents as may be required by
law, to;
a. Enter, at reasonable times, upon the Permittee's premises where a regulated facility or activity is located or
conducted, or where records must be kept under the conditions of this permit;
b. Have access to and copy, at reasonable times, any records that must be kept under the conditions of this permit;
c. Inspect at reasonable times any facilities, equipment (including monitoring and control equipment), practices,
or operations regulated or required under this permit; and
d. Sample or monitor at reasonable times, for the purposes of assuring permit compliance or as otherwise
authorized by the CWA, any substances or parameters at any location [40 CFR 122.41(i)].
Section E Reporting Requirements
1. Change in Discharge
All discharges authorized herein shall be consistent with the terms and conditions of this permit. The discharge of
any pollutant identified in this permit more frequently than or at a level in excess of that authorized shall constitute
a violation of the permit.
2. Planned Changes
The Permittee shall give notice to the Director as soon as possible of any planned physical alterations or additions
to the permitted facility [40 CFR 122.41(1)]. Notice is required only when:
a. The alteration or addition to a permitted facility may meet one of the criteria for new sources at 40 CFR
122.29(b); or
b. The alteration or addition could significantly change the nature or increase the quantity of pollutants
discharged. This notification applies to pollutants subject neither to effluent limitations in the permit, nor to
notification requirements under 40 CFR 122.42(a)(1); or
c. The alteration or addition results in a significant change in the Permittee's sludge use or disposal practices, and
such alteration, addition or change may justify the application of permit conditions that are different from or
absent in the existing permit, including notification of additional use or disposal sites not reported during the
permit application process or not reported pursuant to an approved land application plan.
3. Anticipated Noncompliance
The Permittee shall give advance notice to the Director of any planned changes to the permitted facility or other
activities that might result in noncompliance with the permit [40 CFR 122.41(1)(2)].
4. Transfers
This permit is not transferable to any person without prior written notice to and approval from the Director in
accordance with 40 CFR 122.61. The Director may condition approval in accordance with NCGS 143-215.1, in
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particular NCGS 143-215.1(b)(4)b.2., and may require modification or revocation and reissuance of the permit, or
a minor modification, to identify the new permittee and incorporate such other requirements as may be necessary
under the CWA [40 CFR 122.41(1)(3), 122.61] or state statute.
5. Monitoring Reports
Monitoring results shall be reported at the intervals specified elsewhere in this permit [40 CFR 122.41(1)(4)].
a. Monitoring results must be reported on a Discharge Monitoring Report (DMR) (See Part II.D.2) or forms
provided by the Director for reporting results of monitoring of sludge use or disposal practices.
b. If the Permittee monitors any pollutant more frequently than required by this permit using test procedures
approved under 40 CFR Part 136 and at a sampling location specified in this permit or other appropriate
instrument governing the discharge, the results of such monitoring shall be included in the calculation and
reporting of the data submitted on the DMR.
6. Twenty-four Hour Reporting
a. The Permittee shall report to the Director or the appropriate Regional Office any noncompliance that
potentially threatens public health or the environment. Any information shall be provided orally within 24
hours from the time the Permittee became aware of the circumstances. A written submission shall also be
provided within 5 days of the time the Permittee becomes aware of the circumstances. The written submission
shall contain a description of the noncompliance, and its cause; the period of noncompliance, including exact
dates and times, and if the noncompliance has not been corrected, the anticipated time it is expected to
continue; and steps taken or planned to reduce, eliminate, and prevent reoccurrence of the noncompliance [40
CFR 122.41(1)(6)].
b. The Director may waive the written report on a case -by -case basis for reports under this section if the oral
report has been received within 24 hours.
c. Occurrences outside normal business hours may also be reported to the Division's Emergency Response
personnel at [phone] or [phone].
7. Other Noncompliance
The Permittee shall report all instances of noncompliance not reported under Part II.E.5 and 6. of this permit at the
time monitoring reports are submitted. The reports shall contain the information listed in Part II.E.6. of this permit
[40 CFR 122.41(1)(7)].
8. Other Information
Where the Permittee becomes aware that it failed to submit any relevant facts in a permit application, or submitted
incorrect information in a permit application or in any report to the Director, it shall promptly submit such facts or
information [40 CFR 122.41(1)(8)].
9. Noncompliance Notification
The Permittee shall report by telephone to either the central office or the appropriate regional office of the Division
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. Any occurrence at the water pollution control facility which results in the discharge of significant amounts of
wastes which are abnormal in quantity or characteristic, such as the dumping of the contents of a sludge
digester; the known passage of a slug of hazardous substance through the facility; or any other unusual
circumstances.
b. Any process unit failure, due to known or unknown reasons, that render the facility incapable of adequate
wastewater treatment such as mechanical or electrical failures of pumps, aerators, compressors, etc.
c. Any failure of a pumping station, sewer line, or treatment facility resulting in a by-pass without treatment of all
or any portion of the influent to such station or facility.
Persons reporting such occurrences by telephone shall also file a written report within 5 days following first
knowledge of the occurrence. Also see reporting requirements for municipalities in Part IV.C.2.c. of this permit.
10. Availability of Reports
Except for data determined to be confidential under NCGS 143-215.3 (a)(2) or Section 308 of the Federal Act, 33
USC 1318, all reports prepared in accordance with the terms shall be available for public inspection at the offices
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of the Division. As required by the Act, effluent data shall not be considered confidential. Knowingly making any
false statement on any such report may result in the imposition of criminal penalties as provided for in NCGS 143-
215.1(b)(2) or in Section 309 of the Federal Act.
11. Penalties for Falsification of Reports
The CWA provides that any person who knowingly makes any false statement, representation, or certification in
any record or other document submitted or required to be maintained under this permit, including monitoring
reports or reports of compliance or noncompliance shall, upon conviction, be punished by a fine of not more than
$25,000 per violation, or by imprisonment for not more than two years per violation, or by both [40 CFR 122.41].
12. Annual Performance Reports
Permittees who own or operate facilities that primarily collect or treat municipal or domestic wastewater and have
an average annual flow greater than 200,000 gallons per day shall provide an annual report to the Permit Issuing
Authority and to the users/customers served by the Permittee (NCGS 143-215.1C). The report shall summarize the
performance of the collection or treatment system, as well as the extent to which the facility was compliant with
applicable Federal or State laws, regulations and rules pertaining to water quality. The report shall be provided no
later than sixty days after the end of the calendar or fiscal year, depending upon which annual period is used for
evaluation.
The report shall be sent to:
NC DEQ / Division of Water Resources / Water Quality Permitting Section
ATTENTION: Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
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PART III
OTHER REQUIREMENTS
Section A. Construction
a. The Permittee shall not commence construction of wastewater treatment facilities, nor add to the plant's treatment
capacity, nor change the treatment process(es) utilized at the treatment plant unless (1) the Division has issued an
Authorization to Construct (AtC) permit or (2) the Permittee is exempted from such AtC permit requirements
under Item b. of this Section.
b. In accordance with NCGS 143-215.1(a5) [SL 2011-394], no permit shall be required to enter into a contract for the
construction, installation, or alteration of any treatment work or disposal system or to construct, install, or alter any
treatment works or disposal system within the State when the system's or work's principle function is to conduct,
treat, equalize, neutralize, stabilize, recycle, or dispose of industrial waste or sewage from an industrial facility and
the discharge of the industrial waste or sewage is authorized under a permit issued for the discharge of the
industrial waste or sewage into the waters of the State. Notwithstanding the above, the permit issued for the
discharge may be modified if required by federal regulation.
Issuance of an AtC will not occur until Final Plans and Specifications for the proposed construction have been
submitted by the Permittee and approved by the Division.
c.
Section B. Groundwater Monitoring
The Permittee shall, upon written notice from the Director, conduct groundwater monitoring as may be required to
determine the compliance of this NPDES permitted facility with the current groundwater standards.
Section C. Changes in Discharges of Toxic Substances
The Permittee shall notify the Permit Issuing Authority as soon as it knows or has reason to believe (40 CFR 122.42):
a. That any activity has occurred or will occur which would result in the discharge, on a routine or frequent basis, of
any toxic pollutant which is not limited in the permit, if that discharge will exceed the highest of the following
"notification levels";
(1) One hundred micrograms per liter (100 µg/L);
(2) Two hundred micrograms per liter (200 µg/L) for acrolein and acrylonitrile; five hundred micrograms per liter
(500 µg/L) for 2,4-dinitrophenol and for 2-methyl-4,6-dinitrophenol; and one milligram per liter (1 mg/L) for
antimony;
(3) Five times the maximum concentration value reported for that pollutant in the permit application.
b. That any activity has occurred or will occur which would result in any discharge, on a non -routine or infrequent
basis, of a toxic pollutant which is not limited in the permit, if that discharge will exceed the highest of the
following "notification levels";
(1) Five hundred micrograms per liter (500 µg/L);
(2) One milligram per liter (1 mg/L) for antimony;
(3) Ten times the maximum concentration value reported for that pollutant in the permit application.
Section D. Facility Closure Requirements
The Permittee must notify the Division at least 90 days prior to the closure of any wastewater treatment system covered
by this permit. The Division may require specific measures during deactivation of the system to prevent adverse
impacts to waters of the State. This permit cannot be rescinded while any activities requiring this permit continue at the
permitted facility.
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PART IV
SPECIAL CONDITIONS FOR MUNICIPAL FACILITIES
Section A. Definitions
In addition to the defmitions in Part II of this permit, the following defmitions apply to municipal facilities:
Indirect Discharge or Industrial User
Any non -domestic source that discharges wastewater containing pollutants into a POTW regulated under section
307(b), (c) or (d) of the CWA. [40 CFR 403.3 (i) and (j) and 15A NCAC 02H .0903(b)(11)]
Interference
Inhibition or disruption of the POTW treatment processes; operations; or its sludge process, use, or disposal which
causes or contributes to a violation of any requirement of the Permittee's (or any satellite POTWs if different from the
Permittee) NPDES, collection system, or non -discharge permit or prevents sewage sludge use or disposal in
compliance with specified applicable State and Federal statutes, regulations, or permits. [15A NCAC 02H
.0903(b)(14)]
Pass Through
A discharge which exits the POTW into waters of the State in quantities or concentrations which, alone or with
discharges from other sources, causes a violation, including an increase in the magnitude or duration of a violation, of
the Permittee's (or any satellite POTWs, if different from the Permittee) NPDES, collection system, or non -discharge
permit. [15A NCAC 02H .0903(b)(23)]
Publicly Owned Treatment Works (POTW)
A treatment works as defmed by Section 212 of the CWA, which is owned by a State or local government organization.
This defmition includes any devices and systems used in the storage, treatment, recycling and reclamation of municipal
sewage or industrial wastes of a liquid nature. It also includes the collection system, as defmed in 15A NCAC 2T
.0402, only if it conveys wastewater to a POTW treatment plant. The term also means the local government
organization, or municipality, as defmed in section 502(4) of the CWA, which has jurisdiction over indirect discharges
to and the discharges from such a treatment works. In this context, the organization may be the owner of the POTW
treatment plant or the owner of the collection system into which an indirect discharger discharges. This second type of
POTW may be referred to as a "satellite POTW organization." [15A NCAC 02H .0903(b)(26)]
"Significant Industrial User" or "SIU"
An Industrial User that discharges wastewater into a publicly owned treatment works and that [15A NCAC 02H
.0903(b)(33)]:
1. Discharges an average of 25,000 gallons per day or more of process wastewater to the POTW (excluding sanitary,
noncontact cooling and boiler blowdown wastewaters); or
2. Contributes process wastewater which makes up five percent or more of the NPDES or non -discharge permitted
flow limit or organic capacity of the POTW treatment plant. In this context, organic capacity refers to BOD, TSS
and ammonia; or
3. Is subject to categorical standards under 40 CFR Part 403.6 and 40 CFR Parts 405-471; or
4. Is designated as such by the Permittee on the basis that the Industrial User has a reasonable potential for adversely
affecting the POTWs operation or for violating any pretreatment standard or requirement, or the POTW's effluent
limitations and conditions in its NPDES or non -discharge permit, or to limit the POTW's sludge disposal options;
5. Subject to approval under 15A NCAC 02H .0907(b), the Permittee may determine that an Industrial User meeting
the criteria in paragraphs 1 or 2 of this defmition above has no reasonable potential for adversely affecting the
POTWs operation or for violating any pretreatment standard or requirement, the POTWs effluent limitations and
conditions in its NPDES or non -discharge permit, or to limit the POTWs sludge disposal options, and thus is not a
Significant Industrial User (SIU); or
6. Subject to approval under 15A NCAC 02H .0907(b), the Permittee may determine that an Industrial User meeting
the criteria in paragraph 3 of this defmition above meets the requirements of 40 CFR Part 403.3(v)(2) and thus is a
non -significant categorical Industrial User.
Section B. Publicly Owned Treatment Works (POTWs)
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Section C. Municipal Control of Pollutants from Industrial Users.
1. Effluent limitations are listed in Part I of this permit. Other pollutants attributable to inputs from Industrial Users
discharging to the POTW may be present in the Permittee's discharge. At such time as sufficient information
becomes available to establish limitations for such pollutants, this permit may be revised to specify effluent
limitations for any or all of such other pollutants in accordance with best practicable technology or water quality
standards.
2. Prohibited Discharges
a. The Permittee shall develop and enforce their Pretreatment Program to implement the prohibition against the
introduction of pollutants or discharges into the waste treatment system or waste collection system which
cause or contribute to Pass Through or Interference as defined in 15A NCAC 02H .0900 and 40 CFR 403. [40
CFR 403.5(a)(1)]
b. The Permittee shall develop and enforce their Pretreatment Program to implement the prohibitions against the
introduction of the following wastes in the waste treatment or waste collection system [40 CFR 403.5(b)]:
(1) Pollutants which create a fire or explosion hazard in the POTW, including, but not limited to,
wastestreams with a closed cup flashpoint of less than 140 degrees Fahrenheit or 60 degrees Centigrade
using the test methods specified in 40 CFR 261.21;
(2) Pollutants which cause corrosive structural damage to the POTW, but in no case discharges with pH lower
than 5.0, unless the works is specifically designed to accommodate such discharges;
Solid or viscous pollutants in amounts which cause obstruction to the flow in the POTW resulting in
Interference;
(4) Any pollutant, including oxygen demanding pollutants (BOD, etc.) released in a Discharge at a flow rate
and/or pollutant concentration which will cause Interference with the POTW;
Heat in amounts which will inhibit biological activity in the POTW resulting in Interference, but in no
case heat in such quantities that the temperature at the POTW Treatment Plant exceeds 40°C (104°F)
unless the Division, upon request of the POTW, approves alternate temperature limits;
(6) Petroleum oil, non -biodegradable cutting oil, or products of mineral oil origin in amounts that will cause
Interference or Pass Through;
Pollutants which result in the presence of toxic gases, vapors, or fumes within the POTW in a quantity that
may cause acute worker health and safety problems; or
Any trucked or hauled pollutants, except at discharge points designated by the POTW.
All POTWs must provide adequate notice to the Director of the following [40 CFR 122.42(b)]:
1. Any new introduction of pollutants into the POTW from an indirect discharger, regardless of the means of
transport, which would be subject to section 301 or 306 of CWA if it were directly discharging those pollutants;
and
2. Any substantial change in the volume or character of pollutants being introduced by an indirect discharger as
influent to that POTW at the time of issuance of the permit.
3. For purposes of this paragraph, adequate notice shall include information on (1) the quality and quantity of effluent
introduced into the POTW, and (2) any anticipated impact that may result from the change of the quantity or
quality of effluent to be discharged from the POTW.
(3)
(5)
(7)
(8)
c. The Permittee shall investigate the source of all discharges into the POTW, including slug loads and other
unusual discharges, which have the potential to adversely impact the Permittee's Pretreatment Program and/or
the operation of the POTW.
The Permittee shall report such discharges into the POTW to the Director or the appropriate Regional Office.
Any information shall be provided orally within 24 hours from the time the Permittee became aware of the
circumstances. A written submission shall also be provided within 5 days of the time the Permittee becomes
aware of the circumstances. The written submission shall contain a description of the discharge; the
investigation into possible sources; the period of the discharge, including exact dates and times; if the
discharge has not ceased, the anticipated time it is expected to continue; and steps taken or planned to reduce,
eliminate, and prevent reoccurrence of the noncompliance,
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3. With regard to the effluent requirements listed in Part I of this permit, it may be necessary for the Permittee to
supplement the requirements of the Federal Pretreatment Standards (40 CFR, Part 403) to ensure compliance by
the Permittee with all applicable effluent limitations. Such actions by the Permittee may be necessary regarding
some or all of the industries discharging to the municipal system.
4. The Permittee shall require any Industrial User (IU) discharging to the POTW to meet Federal Pretreatment
Standards developed under Section 307(b) of the Act as amended (which includes categorical standards and
specific local limits, best management practices and narrative requirements). Prior to accepting wastewater from
any Significant Industrial User (SIU), the Permittee shall either develop and submit to the Division a new
Pretreatment Program or, as necessary, a modification of an existing Pretreatment Program, for approval as
required under section D below as well as 15A NCAC 02H .0907(a) and (b). [40 CFR 122.44(j)(2)]
5. This permit shall be modified, or alternatively, revoked and reissued, to incorporate or modify an approved POTW
Pretreatment Program or to include a compliance schedule for the development of a POTW Pretreatment Program
as required under Section 402 (b)(8) of the CWA and implementing regulations or by the requirements of the
approved State pretreatment program, as appropriate.
Section D. Pretreatment Programs
Under authority of sections 307 (b) and (c) and 402(b)(8) of the CWA and implementing regulations 40 CFR 403,
North Carolina General Statute 143-215.3(14) and implementing regulations 15A NCAC 02H .0900, and in accordance
with the approved pretreatment program, all provisions and regulations contained and referenced in the pretreatment
program submittal are an enforceable part of this permit. [40 CFR 122.44(j)(2)]
The Permittee shall operate its approved pretreatment program in accordance with Section 402(b)(8) of the CWA, 40
CFR 403, 15A NCAC 02H .0900, and the legal authorities, policies, procedures, and fmancial provisions contained in
its pretreatment program submission and Division approved modifications thereof. Such operation shall include but is
not limited to the implementation of the following conditions and requirements. Terms not defined in Part II or Part IV
of this permit are as defined in 15A NCAC 02H .0903 and 40 CFR 403.3.
1. Sewer Use Ordinance (SUO)
The Permittee shall maintain adequate legal authority to implement its approved pretreatment program. [15A
NCAC 02H .0903(b)(32), .0905 and .0906(b)(1); 40 CFR 403.8(f)(1) and 403.9(b)(1) and (2)]
2. Industrial Waste Survey (IWS)
The Permittee shall implement an IWS consisting of the survey of users of the POTW collection system or
treatment plant, as required by 40 CFR 403.8(f)(2)(i-iii) and 15A NCAC 02H .0905 [also 40 CFR 122.44(j)(1)1,
including identification of all Industrial Users that may have an impact on the POTW and the character and amount
of pollutants contributed to the POTW by these Industrial Users and identification of those Industrial Users
meeting the defmition of SIU. Where the Permittee accepts wastewater from one or more satellite POTWs, the
IWS for the Permittee shall address all satellite POTW services areas, unless the pretreatment program in those
satellite service areas is administered by a separate Permittee with an approved Pretreatment Program. The
Permittee shall submit a summary of its IWS activities to the Division at least once every five years, and as
required by the Division. The IWS submission shall include a summary of any investigations conducted under
paragraph C.2.c. of this Part. [15A NCAC 02H .0903(b)(13), .0905 and .0906(b)(2); 40 CFR 403.8(f)(2) and 403.9]
3. Monitoring Plan
The Permittee shall implement a Division -approved Monitoring Plan for the collection of facility specific data to
be used in a wastewater treatment plant Headworks Analysis (HWA) for the development of specific pretreatment
local limits. Effluent data from the Plan shall be reported on the DMRs (as required by Parts II.D and II.E.5.). [15A
NCAC 02H .0903(b)(16), .0906(b)(3) and .0905]
4. Headworks Analysis (HWA) and Local Limits
The Permittee shall obtain Division approval of a HWA at least once every five years, and as required by the
Division. Within 180 days of the effective date of this permit (or any subsequent permit modification) the
Permittee shall submit to the Division a written technical evaluation of the need to revise local limits (i.e., an
updated HWA or documentation of why one is not needed) [40 CFR 122.44]. The Permittee shall develop, in
accordance with 40 CFR 403.5(c) and 15A NCAC 02H .0909, specific Local Limits to implement the prohibitions
listed in 40 CFR 403.5(a) and (b) and 15A NCAC 02H .0909. Pursuant to 40 CFR 403.5, local limits are
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enforceable Pretreatment Standards as defined by 40 CFR 403.3(1). [15A NCAC 02H .0903(b)(10), .0905, and
.0906(b)(4)]
5. Industrial User Pretreatment Permits (IUP) & Allocation Tables
In accordance with NCGS 143-215.1, the Permittee shall issue to all Significant Industrial Users, permits for
operation of pretreatment equipment and discharge to the Permittee's collection system or treatment works. These
permits shall contain limitations, sampling protocols, reporting requirements, appropriate standard and special
conditions, and compliance schedules as necessary for the installation of treatment and control technologies to
assure that their wastewater discharge will meet all applicable pretreatment standards and requirements. The
Permittee shall maintain a current Allocation Table (AT) which summarizes the results of the HWA and the limits
from all IUPs. Permitted IUP loadings for each parameter cannot exceed the treatment capacity of the POTW as
determined by the HWA. [15A NCAC 02H .0906(b)(6), .0909, .0916, and .0917; 40 CFR 403.5, 403.8(f)(1)(iii);
NCGS 143-215.67(a)]
6. Authorization to Construct (AtC)
The Permittee shall ensure that an Authorization to Construct permit (AtC) is issued to all applicable Industrial
Users for the construction or modification of any pretreatment facility. Prior to the issuance of an AtC, the
proposed pretreatment facility and treatment process must be evaluated for its capacity to comply with all
Industrial User Pretreatment Permit (IUP) limitations. [15A NCAC 02H .0906(b)(7) and .0905; NCGS 143-
215.1(a)(8)]
7. POTW Inspection & Monitoring of their IUs
The Permittee shall conduct inspection, surveillance, and monitoring activities as described in its Division
approved pretreatment program in order to determine, independent of information supplied by Industrial Users,
compliance with applicable pretreatment standards. [15A NCAC 02H .0908(e); 40 CFR 403.8(f)(2)(v)] The
Permittee must:
a. Inspect all Significant Industrial Users (SIUs) at least once per calendar year;
b. Sample all Significant Industrial Users (SIUs) at least once per calendar year for all SIU permit -limited
parameters including flow except as allowed under 15A NCAC .0908(e); and
c. At least once per year, document an evaluation of any non -significant categorical Industrial User for
compliance with the requirements in 40 CFR 403.3(v)(2), and either continue or revoke the designation as non-
significant.
8. IU Self Monitoring and Reporting
The Permittee shall require all Industrial Users to comply with the applicable monitoring and reporting
requirements outlined in the Division -approved pretreatment program, the industry's pretreatment permit, or in 15A
NCAC 02H .0908. [15A NCAC 02H .0906(b)(5) and .0905; 40 CFR 403.8(f)(1)(v) and (2)(iii); 40 CFR
122.44(j)(2) and 40 CFR 403.12]
9. Enforcement Response Plan (ERP)
The Permittee shall enforce and obtain appropriate remedies for violations of all pretreatment standards
promulgated pursuant to section 307(b) and (c) of the CWA (40 CFR 405 et. seq.), prohibitive discharge standards
as set forth in 40 CFR 403.5 and 15A NCAC 02H .0909, specific local limitations, and other pretreatment
requirements. All remedies, enforcement actions and other, shall be consistent with the Enforcement Response
Plan (ERP) approved by the Division. [15A NCAC 02H .0903(b)(7), .0906(b)(8) and .0905; 40 CFR 403.8(0(5)]
10. Pretreatment Annual Reports (PAR)
The Permittee shall report to the Division in accordance with 15A NCAC 02H .0908. In lieu of submitting annual
reports, Modified Pretreatment Programs developed under 15A NCAC 02H .0904 (b) may be required to submit a
partial annual report or to meet with Division personnel periodically to discuss enforcement of pretreatment
requirements and other pretreatment implementation issues.
For all other active pretreatment programs, the Permittee shall submit two copies of a Pretreatment Annual Report
(PAR) describing its pretreatment activities over the previous calendar year to the Division at the following
address:
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NC DEQ / Division of Water Resources / Water Quality Permitting Section
Pretreatment, Emergency Response, and Collection Systems (PERCS) Unit
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
These reports shall be submitted by March 1 of each year and shall contain the following:
a. Narrative
A narrative summary detailing actions taken, or proposed, by the Permittee to correct significant non-
compliance and to ensure compliance with pretreatment requirements;
b. Pretreatment Program Summary (PPS)
A pretreatment program summary (PPS) on forms or in a format provided by the Division;
c. Significant Non -Compliance Report (SNCR)
A list of Industrial Users (IUs) in significant noncompliance (SNC) with pretreatment requirements, and the
nature of the violations on forms or in a format provided by the Division;
d. Industrial Data Summary Forms (IDSF)
Monitoring data from samples collected by both the POTW and the Significant Industrial Users (SIUs). These
analytical results must be reported on Industrial Data Summary Forms (IDSF) or on other forms or in a format
provided by the Division;
e. Other Information
Copies of the POTW's allocation table, new or modified enforcement compliance schedules, public notice of
IUs in SNC, a summary of data or other information related to significant noncompliance determinations for
IUs that are not considered SIUs, and any other information, upon request, which in the opinion of the Director
is needed to determine compliance with the pretreatment implementation requirements of this permit;
11. Public Notice
The Permittee shall publish annually a list of Industrial Users (IUs) that were in significant noncompliance (SNC)
as defined in the Permittee's Division -approved Sewer Use Ordinance with applicable pretreatment requirements
and standards during the previous twelve month period. This list shall be published within four months of the
applicable twelve-month period. [15A NCAC 02H .0903(b)(34), .0908(b)(5) and .0905 and 40 CFR
403.8(f)(2)(viii)]
12. Record Keeping
The Permittee shall retain for a minimum of three years records of monitoring activities and results, along with
support information including general records, water quality records, and records of industrial impact on the
POTW and shall retain all other Pretreatment Program records as required by 15A NCAC 02H .0908(f). [15A
NCAC 02H .0908(f); 40 CFR 403.12(o)]
13. Pretreatment Program Resources
The Permittee shall maintain adequate funding and qualified personnel to accomplish the objectives of its approved
pretreatment program. and retain a written description of those current levels of inspection. [15A NCAC 02H
.0906(b)(9) and (10) and .0905; 40 CFR 403.8(f)(3), 403.9(b)(3)]
14. Modification to Pretreatment Programs
Modifications to the approved pretreatment program including but not limited to local limits modifications, POTW
monitoring of their Significant Industrial Users (SIUs), and Monitoring Plan modifications, shall be considered a
permit modification and shall be governed by 40 CFR 403.18, 15 NCAC 02H .0114 and 15A NCAC 02H .0907.
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