NC0081825_Draft Permit_20210323

ROY COOPER
Governor
DIONNE DELLI-GATTI
Secretary
S. DANIEL SMITH
Director
NORTH CAROLINA
Environmental Quality
•
March 23,2021
The Honorable Henry(Bill) Watkins,Mayor
Town of Ansonville
P 0 Box 437
Ansonville, North Carolina 28007
Subject: Review of DRAFT Permit
NPDES NC0081825
Ansonville WWTP, Grade WW-II
Anson County
Your Honor:
On March 4,2019,the Division of Water Resources(DWR or the Division) received
Ansonville's application to renew the subject permit, signed by Town Clerk, Dianna Mclaughlin.
We note however that the application did not include the required a one-time analysis for Total
Mercury. This oversite has considerably delayed renewal.
Your Total Mercury (Hg)effluent analyses was due with your renewal application on September
30,2018, six (6)months prior to permit expiration. To Date DWR has no record of you analyzing
for Mercury.
•
Civil Penalty Assessment (CPA).Failure to report Mercury is a permit violation subjecting
Ansonville to Civil Penalty Assessment. If not received within 30 days of this letter(by April 23,
2021),DWR will halt renewal of the subject permit and return your application as"incomplete."
This will subject Ansonville to further CPA for discharging without a valid permit [see Section A.
(1.)].
Public Notice. DWR has enclosed a renewal draft for your review and comment. Please review
this draft carefully to ensure your understanding of the limits and monitoring conditions,and to
correct errors, if any. Concurrent with this notification,the Division will solicit public comment
on this draft by publishing a notice in newspapers having circulation in the general Anson
County area, as required by the NPDES Program. We welcome your written comments on the
draft,but they are not mandatory.
NPDES standard conditions(Parts II,III,and IV)are part of this permit but are not included in
the draft(cover sheet,map,and Part I only). Standard conditions are the same as in your current
permit except that agency and division names have been updated.The latest version of these is
available at https://bit.ly/2BZ4xxx and can be viewed online or downloaded as a PDF file.
Q
North Carolina Department of Environmental Quality I Division of Water Resources
512 North Salisbury Street 11617 Mail Service Center I Raleigh,North Carolina 27699-1617--919.707.9000

Mayor Bill Watkins
Town of Ansonville
Draft Permit Review
Page 2 of 2
Renewal Changes. The Division understands that Ansonville has made no significant alterations
to treatment processes since last renewal. We have therefore made only minimal updates to your
permit. Division records show that you have successfully registered with the eDMR Program.
Following the mandatory 30-day Public Comment period,the Division will review all pertinent
comments, if any,and take appropriate action prior to issuing an NPDES permit final.
Again,issuance depends on Ansonville submitting the required analyses for Total Mercury [using
EPA Test Method 1631d].If you have questions,please email me at [[e-mail]].
Sincere ,
Joe . Corpo n,P. G
D Q/DWR NPDES Permitting Unit
1
Enclosure:NPDES Permit NC0081825(renewal draft)
ec: DWR/FRO, Mark Brantley;Trent Men
Laselfiche NPDES Program Files
DWR/OCU, Maureen Kinney
DWR/PWS
Ansonville WWTP, Jason Mullis [ORC (?]

DEQ/DWR/NPDES
FACT SHEET FOR NPDES PERMIT RENEWAL
NPDES Permit NC0081825
Table 1 --Facility Information
Applicant: Town of Ansonville/
Facility Name: Ansonville Wastewater Treatment Plant(WWTP)
Applicant Address: P.O.Box 437,Ansonville,NC 28007
Facility Address: NCSR 1627(Pinkston River Road),east of Ansonville,NC 28007
Permitted Flow 0.120 MGD
Type of Waste: 100%Domestic
Facility/Permit Status: Class II/Renewal
County: Anson
Discharge Information
Receiving Stream: Pee Dee River Regional Office: Fayetteville(FRO)
Stream Classification: WS-V;B State Grid/ G 18 SE/
Subbasin: 03-07-10 USGS Quad: Ansonville,NC
Special Condition Mercury—update to Annually
303(d)Listed? No Permit Writer: Joe R.Corporon,P.G.
HUC: 03040104 Date: 01Mar2021
Drainage Area(mi2): 6111
Summer 7Q10(cfs) 989
Winter 7Q 10(cfs) 1493ddidrit,
Average Flow(cfs): 7136
IWC(%): 0.02% Lat. 35°06'55"N Long. 80°04' 14"W
SUMMARY
The Town of Ansonville (Andersonville) currently operates a Class PC-I WWTP with a permitted
flow of 0.120 MGD. Treatment includes the components:
• influent pump station,
• manual bar screen,
• aerated equalization chamber,
• aeration chambers,
• bottom clarifiers,
• chlorine contact chambers,
• dechlorination system, and
• aerated sludge holding chamber.
This WWTP has no Pretreatment Program and services the 100 %-domestic wastewater needs fora
local population of approximately 600 residents. Ansonville submitted its tardy renewal application
using EPA Form 2A on March 4,2019. The expired permit became effective on June 1, 2014 and
expired on February 28, 2019, administratively extended since expiration.
Fact Sheet
NPDES NC0081825 Permit Renewal Mar2021
Page 1

RECEIVING STREAM
Ansonville WWTP discharges to the Pee Dee River within a stream segment between the Norwood
Dam and the mouth of Turkey Top Creek. This segment is classified WS-V; B(Water Supply,
swimmable). It also supports best usage for primary recreation as fishing,wildlife consumption,
aquatic life propagation,biological integrity, and agriculture); these waters drain to Class WS-IV.
DMR DATA REVIEW AND COMPLIANCE
Table 2. Summary of DMRs(January 2017—December 2020)
Parameter Units Min Average Max Count (n)
Flow MGD 0.006 0.063 1.105 1,399
BOD mg/1 1.9 11.7 803 203
TSS mg/1 2.5 8.27 155 206
Fecal Colifonn #/100 ml < 1 96 6000 215
TRC µg/1 20 19.6 83 395
Temperature °C 10 20.1 30 333
TN mg/1 1.18 20.8 50.7 16
TP mg/1 1.22 20.1 30 16
pH su 5 7.2 8.1 333
MERCURY EVALUATION REQUIRED:
The Permittee is hereby required to submit a current effluent Hg Test result within 30 days of
receiving this draft permit. If no test results are submitted,DWR will return the renewal application
as incomplete (see cover letter).
Current Permitting Guidance for Total Mercury (Hg). In accord with the NC-statewide Hg TMDL,
the Permittee must report effluent Total Mercury once every permit cycle. The permittee must use
EPA sampling and analytical Method 1631(d). Results must be submitted with the Application for
Permit Renew six (6)months in advance of permit expiration. Because this facility is classified a
"minor" discharger(flow< 1.0 MGD), a Hg limit is not required (monitoring only).
Renewal scheduled last June was postponed because Ansonville failed to document Total Mercury
(Hg)analyses using the approved EPA test method and to include test results with the renewal
application. The Permittee has erroneously reported Mercury during 2019 and 2020,each report in
eDMR erroneously logged in as "Holiday,"without analytical results (Table 3).
Table 3
Permit Facility Month Day Year Parameter Sample UoM Value Modifier
Ansonville COMER-
NC0081825 WWTP 1 1 2019 Mercury Grab ug/1 ? HOLIDAY
Ansonville COMER-
NC0081825 WWTP 1 21 2019 Merou Grab ug/1 ? HOLIDAY
ry
Ansonville COMER-
NC0081825 WWTP 4 19 2019 Mercu Grab ug/I ? HOLIDAY
ry
Ansonville COMER-
NC0081825 WWTP 11 28 2019 Mercury Grab ug/1 ? HOLIDAY
Ansonville COMER-
NC0081825 WWTP 11 29 2019 Mercury Grab ug/1 ? HOLIDAY
NC0081825 Ansonville 1 1 2020 COMER- Grab ug/1 ? HOLIDAY
WWTP Mercury
Fact Sheet
NPDES NC0081825 Permit Renewal Mar2021
Page 2

Ansonville COMER-
NC0081825 WWTP 4 10 2020 Mercury Grab ug/1 ? HOLIDAY
Ansonville COMER- ? HOLIDAY
Mercury
WWTP 11 II 2020 Grab ug/1
Ansonville COMER-
NC0081825 WWTP 11 26 2020 Mercu Grab ug/1 ? HOLIDAY
rY
NC0081825 Ansonville 11 27 2020 COMER Grab ug/1 ? HOLIDAY
WWTP Mercury
Ansonville COMER-
NC0081825 WWTP 12 31 2020 Mercury Grab ugh ? HOLIDAY
VIOLATIONS HISTORY
During the last three years, this facility has received multiple limit exceedances for BOD,TSS, Fecal
Coliform and Flow (see attached Violations Summary Table 3). These data exclude TRC violations
reported below 50 µg/L exempt per current permitting guidelines. The DWR's Fayetteville Regional
Office(FRO)is engaged in ongoing efforts to help the facility improve WWTP operations and
resolve compliance issues.
Table 4—VIOLATIONS/ENFORCEMENT HISTORY-D ec2019-Feb202 1
C� 1s
FACILITY MONTH YEAR PARAM UNITS VALUE OVER VIOL TYPE VIOL ACTION
Ansonville Coliform, Frequency None
WWTP 1 2021 Fecal #/100m1 Violation
Ansonville BOD Monthly Average Proceed to
WWTP 1 2020 mg/1 204 581 Exceeded Enforcement
Ansonville BOD Weekly Average Proceed to
WWTP 2 2020 mg/1 803 1684 Exceeded Enforcement
Ansonville 4 2019 TSS mg/1 36 19 Monthly Average Proceed to
WWTP Exceeded Enforcement
Ansonville BOD Weekly Average Proceed to
WWTP 4 2019 mg/1 56 24 Exceeded Enforcement
Ansonville TSS Weekly Average Proceed to
WWTP 4 2019 mg/1 155 244 Exceeded Enforcement
Ansonville pH Daily Minimum Proceed to NOV
WWTP 5 2020 su 5 17 Not Reached
Ansonville 8 2020 TSS mg/1 66 47 Weekly Average Proceed to
WWTP Exceeded Enforcement
Ansonville 9 2019 Flow MGD Frequency Proceed to NOD
WWTP Violation
Ansonville 9 2019 Flow MGD Frequency Proceed to NOD
WWTP Violation
Ansonville Coliform, Weekly Proceed to
WWTP 11 2019 Fecal #/100m1 568 42 Geometric Mean Enforcement
Exceeded
Ansonville BOD Weekly Average Proceed to
WWTP 12 2019 mg/1 116 158 Exceeded Enforcement
Fact Sheet
NPDESNC008I825 Permit Renewal Mar2021
Page 3

REASONABLE POTENTIAL ANALYSIS-INSTREAM MONITORING-AQUATIC TOXICITY TESTING:
Current parameters of concern (POCs)do not require RPA.Since considerable dilution is available to
this discharge(IWC < 1%), instream monitoring and WET testing are likewise not required.No
changes recommended.
SUMMARY OF PROPOSED CHANGES:
• Added Regulatory citations to each permit section.
• Effluent monitoring for Total Mercury is in violation of the Permit; The permittee is
required to sample and report within 30 days of the receiving the draft.
• Updated text for eDMR requirements, Section A, (3.).
PROPOSED SCHEDULE FOR PERMIT ISSUANCE
Draft Permit to Public Notice: March 23, 2021
Tentative Permit Scheduled to Issue: May 30, 2021
Tentative Effective date: July 1, 2021
NPDES DIVISION CONTACT
If you have questions regarding the above information or about the referenced permit draft,please
contact Joe R.Corporon, P. G.[[e-mail]].
NAME: DATE: 16MAR2021
Fact Sheet
NPDESNC0081825 Pennit Renewal Mar2021
Page 4

NPDES Implementation of Instream Dissolved Metals Standards—Freshwater Standards
The NC 2007-2015 Water Quality Standard (WQS)Triennial Review was approved by the NC
Environmental Management Commission (EMC)on November 13, 2014. The US EPA subsequently
approved the WQS revisions on April 6, 2016, with some exceptions. Therefore, metal limits in draft
permits out to public notice after April 6, 2016 must be calculated to protect the new standards-as
approved.
Table 5. NC Dissolved Metals Water Quality Standards/Aquatic Life Protection
Parameter Acute FW, µg/1 Chronic FW, Acute SW, µg/1 Chronic SW,
(Dissolved) µg/1 (Dissolved) µg/l
(Dissolved) (Dissolved)
Arsenic 340 150 69 36
Beryllium 65 6.5 --- ---
Cadmium Calculation Calculation 40 8.8
Chromium III Calculation Calculation --- ---
Chromium VI 16 11 1100 50
Copper Calculation Calculation 4.8 3.1
Lead Calculation Calculation 210 8.1
Nickel Calculation Calculation 74 8.2
Silver Calculation 0.06 1.9 0.1
Zinc Calculation Calculation 90 81
Table 1 Notes:
1. FW= Freshwater, SW= Saltwater
2. Calculation =Hardness dependent standard
3. Only the aquatic life standards listed above are expressed in dissolved form. Aquatic life
standards for Mercury and selenium are still expressed as Total Recoverable Metals due to
bioaccumulative concerns (as are all human health standards for all metals). It is still
necessary to evaluate total recoverable aquatic life and human health standards listed in 15A
NCAC 2B.0200(e.g., arsenic at 10 µg/1 for human health protection;cyanide at 5 µg/L and
fluoride at 1.8 mg/L for aquatic life protection).
Table 6. Dissolved Freshwater Standards for Hardness-Dependent Metals
The Water Effects Ratio(WER) is equal to one unless determined otherwise under 15A
NCAC 02B .0211 Subparagraph (11)(d)
Metal NC Dissolved Standard,µg/l
Cadmium, Acute WER*{1.136672-[ln hardness](0.041838)} • e^{0.9151 [In
hardness]-3.1485}
Cadmium, Acute Trout WER*{1.136672-[/n hardness](0.041838)} • e^{0.9151[ln
waters hardness]-3.6236}
Cadmium, Chronic WER*{1.101672-[ln hardness](0.041838)} • e^{0.7998[1n
hardness]-4.4451}
Fact Sheet
NPDES NC008I825 Permit Renewal Mar202 I
Page 5

Chromium III,Acute WER*0.316 • e^{0.8190[ln hardness]+3.7256}
Chromium III,Chronic WER*0.860 • e^{0.8190[/n hardness]+0.6848}
Copper, Acute WER*0.960 • e^{0.9422[In hardness]-1.700)
Copper, Chronic WER*0.960 • e^{0.8545[In hardness]-1.702)
Lead,Acute WER*{1.46203-[ln hardness](0.145712)) • e^{1.273[ln hardness]-
1.460)
Lead,Chronic WER*{1.46203-[ln hardness](0.145712)} •e^{1.273[ln hardness]-
4.705
Nickel, Acute WER*0.998 • e^{0.8460[ln hardness]+2.255)
Nickel, Chronic WER*0.997 • e^{0.8460[ln hardness]+0.0584)
Silver, Acute WER*0.85 •e^{1.72[ln hardness]-6.59)
Silver, Chronic Not applicable
Zinc, Acute WER*0.978 • e^{0.8473[ln hardness]+0.884)
Zinc, Chronic WER*0.986 • e^{0.8473[ln hardness]+0.884}
General Information on the Reasonable Potential Analysis(RPA)
The RPA process itself did not change as the result of the new metals standards.However,
application of the dissolved and hardness-dependent standards requires additional consideration in
order to establish the numeric standard for each metal of concern of each individual discharge.
The hardness-based standards require some knowledge of the effluent and instream (upstream)
hardness and so must be calculated case-by-case for each discharge.
Metals limits must be expressed as `total recoverable' metals in accordance with 40 CFR 122.45(c).
The discharge-specific standards must be converted to the equivalent total values for use in the RPA
calculations. We will generally rely on default translator values developed for each metal(more on
that below),but it is also possible to consider case-specific translators developed in accordance with
established methodology.
RPA Permitting Guidance/WQBELs for Hardness-Dependent Metals - Freshwater
The RPA is designed to predict the maximum likely effluent concentrations for each metal of
concern, based on recent effluent data,and calculate the allowable effluent concentrations,based on
applicable standards and the critical low-flow values for the receiving stream.
If the maximum predicted value is greater than the maximum allowed value (chronic or acute),the
discharge has reasonable potential to exceed the standard,which warrants a permit limit in most
cases. If monitoring for a particular pollutant indicates that the pollutant is not present (i.e.
consistently below detection level), then the Division may remove the monitoring requirement in the
reissued permit.
Fact Sheet
NPDES NC0081825 Permit Renewal Mar2021
Page 6

1. To perform a RPA on the Freshwater hardness-dependent metals the Permit Writer compiles
the following information:
• Critical low flow of the receiving stream, 7Q 10(the spreadsheet automatically
calculates the 1Q10 using the formula 1Q10=0.843 (s7Q10,cfs)0.993
• Effluent hardness and upstream hardness, site-specific data is preferred
• Permitted flow
• Receiving stream classification
2. In order to establish the numeric standard for each hardness-dependent metal of concern and
for each individual discharge,the Permit Writer must first determine what effluent and
instream (upstream) hardness values to use in the equations.
The permit writer reviews DMR's, Effluent Pollutant Scans,and Toxicity Test results for any
hardness data and contacts the Permittee to see if any additional data is available for instream
hardness values, upstream of the discharge.
If no hardness data is available, the permit writer may choose to do an initial evaluation using
a default hardness of 25 mg/L (CaCO3 or(Ca+Mg)). Minimum and maximum limits on the
hardness value used for water quality calculations are 25 mg/L and 400 mg/L,respectively.
If the use of a default hardness value results in a hardness-dependent metal showing
reasonable potential,the permit writer contacts the Permittee and requests 5 site-specific
effluent and upstream hardness samples over a period of one week. The RPA is rerun using
the new data.
The overall hardness value used in the water quality calculations is calculated as follows:
Combined Hardness(chronic)
=(Permitted Flow,cfs*Avg.Effluent Hardness,mg/L) x(s7Q10, cfs *Avg.Upstream Hardness,
mg/L)
(Permitted Flow, cfs+s7Q 10, cfs)
The Combined Hardness for acute is the same but the calculation uses the 1Q10 flow.
3. The permit writer converts the numeric standard for each metal of concern to a total
recoverable metal, using the EPA Default Partition Coefficients(DPCs)or site-specific
translators, if any have been developed using federally approved methodology.
•
Fact Sheet
NPDESNC0081825 Permit Renewal Mar2021
Page 7

EPA default partition coefficients or the"Fraction Dissolved"converts the
value for dissolved metal at laboratory conditions to total recoverable metal
at in-stream ambient conditions.This factor is calculated using the linear
partition coefficients found in The Metals Translator: Guidance for
Calculating a Total Recoverable Permit Limit from a Dissolved Criterion
(EPA 823-B-96-007,June 1996)and the equation:
Cdlss = 1
Ctotal 1 + { [Kpo][ss(l >][10-6] }
Where:
ss= in-stream suspended solids concentration [mg/l], minimum of 10 mg/L
used,and
Kpo and a=constants that express the equilibrium relationship between
dissolved and adsorbed forms of metals. A list of constants used for each
hardness-dependent metal can also be found in the RPA program under a
4. The numeric standard for each metal of concern is divided by the default partition coefficient
(or site-specific translator) to obtain a Total Recoverable Metal at ambient conditions.
In some cases, where an EPA default partition coefficient translator does not exist(ie. silver),
the dissolved numeric standard for each metal of concern is divided by the EPA conversion
factor to obtain a Total Recoverable Metal at ambient conditions.This method presumes that
the metal is dissolved to the same extent as it was during EPA's criteria development for
metals. For more information on conversion factors see the June, 1996 EPA Translator
Guidance Document.
5. The RPA spreadsheet uses a mass balance equation to determine the total allowable
concentration(permit limits) for each pollutant using the following equation:
Ca=(s7Q10+Qw)(Cwu s)—(s7Q10)(Cb)
Qw
Where: Ca=allowable effluent concentration(µg/L or mg/L)
Cwqs=NC Water Quality Standard or federal criteria (µg/L or mg/L)
Cb=background concentration: assume zero for all toxicants except NH3*(µg/L or
mg/L)
Qw=permitted effluent flow(cfs,match s7Q 10)
s7Q 10=summer low flow used to protect aquatic life from chronic toxicity and human
health through the consumption of water,fish, and shellfish from noncarcinogens (cfs)
* Discussions are on-going with EPA on how best to address background
concentrations
Flows other than s7Q10 may be incorporated as applicable:
1 Q 10=used in the equation to protect aquatic life from acute toxicity
QA=used in the equation to protect human health through the consumption of water,
fish, and shellfish from carcinogens
30Q2=used in the equation to protect aesthetic quality
6. The permit writer enters the most recent 2-3 years of effluent data for each pollutant of
concern. Data entered must have been taken within four and one-half years prior to the date of
the permit application (40 CFR 122.21). The RPA spreadsheet estimates the 95th percentile
Fact Sheet
NPDES NC0081825 Permit Renewal Mar2021
Page 8

upper concentration of each pollutant. The Predicted Max concentrations are compared to the
Total allowable concentrations to determine if a permit limit is necessary. If the predicted max
exceeds the acute or chronic Total allowable concentrations, the discharge is considered to
show reasonable potential to violate the water quality standard,and a permit limit (Total
allowable concentration) is included in the permit in accordance with the U.S.EPA Technical
Support Document for Water Quality-Based Toxics Control published in 1991.
7. When appropriate, permit writers develop facility specific compliance schedules in
accordance with the EPA Headquarters Memo dated May 10,2007 from James Hanlon to
Alexis Strauss on 40 CFR 122.47 Compliance Schedule Requirements.
8. The Total Chromium NC WQS was removed and replaced with trivalent chromium and
hexavalent chromium Water Quality Standards.As a cost savings measure, total chromium
data results may be used as a conservative surrogate in cases where there are no analytical
results based on chromium III or VI.In these cases,the projected maximum concentration
(95th%)for total chromium will be compared against water quality standards for chromium
III and chromium VI.
9. Effluent hardness sampling and instream hardness sampling, upstream of the discharge,are
inserted into all permits with facilities monitoring for hardness-dependent metals to ensure the
accuracy of the permit limits and to build a more robust hardness dataset.
10.Hardness and flow values used in the Reasonable Potential Analysis for this permit included:
Table 7-Parameter Value Comments (Data Source)
Average Effluent Hardness(mg/L) N/A No RPA necessary
[Total as,CaCO3 or(Ca+Mg)]
Average Upstream Hardness(mg/L)
[Total as,CaCO3 or(Ca+Mg)] N/A No RPA necessary
7Q10 summer(cfs) N/A No RPA necessary
1 Q 10(cfs) N/A No RPA necessary
Permitted Flow(MGD) 0.120 No RPA necessary
Fact Sheet
NPDES NCOO8I825 Permit Renewal Mar2021
Page 9

NPDES Permit NCO 081281
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENTAL QUALITY
DIVISION OF WATER RESOURCES
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
(NPDES) .V
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,s• mended,the
Town£Anso
is hereby authorized to discharge wastewater fro \a.,facility located at the
` \ Ansonville WWTP
Pinkston River Road [NCSR 1627]
ast of Ansonville
Anson County
to receiving waters designated as Pee Dee River within the Yadkin—Pee Dee 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 , 2021.
This permit and authorization to discharge shall expire at midnight on January 31, 2024.
Signed this day , 2021.
S. Daniel Smith,Director
Division of Water Resources
By Authority of the Environmental Management Commission
Page 1 of 6

NPDES Permit NC008 1281
SUPPLEMENT TO PERMIT COVER SHEET
All previous NPDES Permits issued to this facility,whether for operation or discharge are hereby
revoked. 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.
Town of Ansonville
is hereby authorized to: J
1. continue to operate an existing 0.120 MGD wastewater treatment fa ' utilizing the components
• influent pump station,
• manual bar screen,
• aerated equalization chamber,
• aeration chambers,
\N>
• bottom clarifiers,
• chlorine cont. t cham,e ,
• d echlo ': .r s = ,
• aerat.. .ge hob'8: h. .. -r,
these facilities loca -a at the Tow+ of s . +vile Wastewater Treatment Plant,Pinkston River
Road[NCSR 1627],M. of A 8,, i ville a son County;and
2. discharge from said treatment works via Outfall 001, a location specified on the attached ma into
g P P�
the Pee Dee River [stream segment 13-(23.5)], a waterbody currently classified WS-V;B within
subbasin 03-07-10 [HUC:03040104] of the Yadkin—Pee Dee River Basin.
Page 2 of 6

NPDES Permit NC0081281
Part I
A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
[15A NCAC 02B.0400 et seq.,02B .0500 et seq., 15A NCAC 08G.0302]WWTP Class WW-II
Beginning on the effective date of this permit, the Permittee is authorized to discharge via Outfall 001
to the Pee Dee River, a class WS-V;B waterbody within the Yadkin—Pee Dee River Basin. Such
discharge shall be limited, monitored and reported 1 by the Permittee as specified below:
EFFLUENT LIMITS MONITORING REQUIREMENTS
CHARACTERISTICS Monthly Weekly Daily Measurement Sample Sample
[Parameter Codes] 2
Average Average Maximum Frequency Type Location
Flow 50050 0.120 MGD Continuous Recording I or E
BOD, 5-day(20°C)3 00310 30.0 mg/L 45.0 mg/L Weekly Composite I&E
Total Suspended Solids 3 00530 30.0 mg/L 45.0 mg/L Weekly Composite I&E
FecalColiform 31616 200/100mL 400/100mL Weekly Grab E
(geometric mean)
Total Residual Chlorine 4 50060 28 ug/L 2/Week Grab E
Temperature(°C) 00010 Weekly Grab E
pH(standard units) 00400 Not<6.0 or>9.0 s.u. Weekly Grab E
TotalNitrogen (TN) C0600 Monitor and Report Quarterly Composite E
(NO2+NO3+TICN)
Total Phosphorus(TP) C0665 Monitor and Report Quarterly Composite E
TotalMercury 5 1631E Monitor and Report 1 /Cycle Grab E
Footnotes:
1. Beginning on the effective date of this permit,the Permittee shall submit discharge monitoring reports
electronically using NC DWR's eDMR application system [See Special Condition A.(3.)].
2. Sample Locations:E—Effluent,I—Influent.
3. The monthly average effluent BOD5 and Total Suspended Solids concentrations shall not exceed 15%of the
respective influent value(i.e.,85 %removal is required).
4. Total Residual Chlorine-Limits and monitoring apply only if chlorine is used to disinfect.The Division
shall consider compliant all effluent TRC values reported below 50 µg/L.However,the Permittee shall
continue to record and submit all values reported by a North-Carolina certified test method(including field
certified),even if these values fall below 50 µg/L.
5. Testing for Total Mercury requires EPA Test Method 1631E[See Special Condition A.(2.)].
Condition:The Permittee shall discharge no floating solids or foam visible in other than trace amounts.
Page 3 of 6

NPDES Permit NC0081281
A. (2.) EFFLUENT MERCURY ANALYSIS
[G.S. 143-215.13(a)(2)] [G.S. 143-215.66]
The Permittee shall provide one(1)effluent mercury analysis,using EPA Method 1631E,as attachment to the
next permit renewal application,due six(6)months prior to expiration.The analysis shall sample within 12
months of renewal.The Permittee shall report on monthly DMRs under"Comments,"any additional effluent
mercury measurements conducted during this permit cycle.Failure to include Mercury results with the renewal
application is a permit violation.
A. (3.) ELECTRONIC REPORTING OF DISCHA NITORINGREPORTS
[G.S. 143-215.1(b)]
7
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. \`\ \ .\ -j
NOTE: This special condition s9pplements or su ersedes the following sections within Part II of this
permit (Standard Conditions r NPDESPermits). ,
\ ."
• Section B. (];1.) Signatory Re ements
`\?.>
• Section . ( ) Reporting\ Cam,
• Section D. Reco etention _,,
• Section E. (5. Monito • Reports
1. Reporting Requir nts [Su ersedes Section D. (2.)and Section E. (5.)(a)1
The permittee shall report is arge 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
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
Page 4 of 6

NPDES Permit NC008 1281
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 ,-,\77
The permittee may seek an electronic reporting waiver from the Division (see"How to Request a
Waiver from Electronic Reporting" section below). \\\,)\\
,t
2. Electronic Submissions
\\\\In accordance with 40 CFR 122.41(l)(9), the ernuttee 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 jsubmission.
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-d ischarge-
elimination-system-npdes-electronic-reporting-rule
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
Page 5 of 6

NPDES Permit NCO°81281
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.)
filll
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. a
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 eDM and obta. ' g an eDMR user account, please visit
the following web page:
http://deq.nc.gov/about/divisions/wgter-reso
Certification. Any person subr`rr1tting 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 ACCEP 1BD:--, =
"I certify, under penalty of law, th t this document and all attachments were prepared under my
direction or supervision in acco� nce with a system designed to assure that qualified personnel
properly gather and evaluate th),tnformation submitted. Based on my inquiry of the person or
persons who manage the system,/or those persons directly responsible for gathering the
information, the informatidii 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 offines and imprisonment for knowing violations."
5. Records Retention [Supplements Section D.(6.)1
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].
Page 6 of 6

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NPDES Permit NC0081825
Receiving Stream: Pee-Dee River
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