NC0088366_Permit issuance_20171220

L t
Water Resources
Favironmental Quality
December 20, 2017
Mr. Steve Ward
Director, Public Utilities
Harnett County
P.O. Box 1119
Lillington, North Carolina 27546
ROY COOPER
Governor
MICHAEL S. REGAN
Secretary
LINDA CULPEPPER
Interim Director
Subject: Final NPDES Permit Renewal
Permit NCO088366
South Harnett Regional WWTP
Harnett County
Facility Class IV
SIC Code 4952
Dear Mr. Ward:
Division personnel have reviewed and approved your application for renewal of the subject permit.
Accordingly, we are forwarding the attached NPDES permit. This pen -nit 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).
The following change was made to the draft permit sent to you on October 4, 2017:
e The expiration date has been extended to October 31, 2022.
The final permit maintains the following significant changes identified in the letter sent on
October 4, 2017:
The NC 2007-2014 Water Quality Standard (WQS) Triennial Review was approved by the
NC Environmental Management Committee (EMC) on November 13, 2014. The US EPA
subsequently approved the WQS revisions on April 6, 2016 with some exceptions. The NC
Division of Water Resources NPDES Permitting Unit is required to implement the new
dissolved metal standards in all permits public noticed after April 6, 2016. The new
standards for most metals include acute standards. Further, the freshwater standards for
several metals are expressed as the dissolved form of the metals, and seven metals have
hardness -dependent equations. As a result, the NPDES Permitting Unit will need site -
specific effluent hardness data and instream hardness data, upstream of the discharge, for
stale of North Carolina I Fmiroanental Quality I Water Resources
1617 Mail service Center I Raleigh, North Carolim 27699-1617
919 807 6300

Page 12
7
each facility monitoring these metals in order to calculate permit limitations. Effluent
hardness and instream hardness sampling, upstream of the discharge, has been added to
this permit at a monitoring frequency of quarterly. See Sections A. (1). Effluent Limitations
and Monitoring Requirements.
• Some of the wording has changed in Special Condition A. (2). Chronic Toxicity Permit
Limit, please review each paragraph carefully.
• Special Conditions A. (3) Total Nitrogen Monitoring/Limit and A. (4) Total Phosphorus
Monitoring/Limit have been added to the permit for total nitrogen and total phosphorus
mass loading calculations.
• Special Condition A. (6) has been modified to include the specific three years in which the
Effluent Pollutant Scans shall be performed (2019, 2020, and 2021). In addition, at the end
of the Special Condition, 2nd species Toxicity Testing Requirements for municipal permit
renewals per Federal Regulations [40 CFR 122.216)(5)] have been added.
• Effluent data for copper showed reasonable potential to exceed the allowable discharge
concentration of 45 µg/L. Therefore, limitations and a monthly monitoring requirement for
total copper was added to the permit [See A. (1)].
• Effluent data reported for silver was all less than detection, at a detection level of less than
5 µg/L. In accordance with 15A NCAC 2B .0500 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.
Currently, DWR's laboratory identifies the Practical Quantitation Limit (PQL) for silver at
< 1 µg/L. The allowable discharge concentration for your facility is 0.175 µg/L. Therefore,
future sampling for silver as part of the facility's Pretreatment Program and Effluent
Pollutant Scans should sample silver down to the lower reporting level of the procedure
which is < 1 µg/L. No limits or additional monitoring requirements for silver were added
to the permit at this time; however, if effluent silver concentrations are not consistently less
than 1 µg/L, a limit will be added to the permit during the next renewal.
• Federal regulations require electronic submittal of all discharge monitoring reports
(DMRs) and program reports. The requirement to continue reporting discharge monitoring
data electronically using the NC DWR's Electronic Discharge Monitoring Report (eDMR)
internet application has been added to your final NPDES permit. [See Special Condition
A. (7)].
• 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.

11 Page 13
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 permits that may be required.
If you have any questions concerning this permit, please contact Bing Bai at [phone] or
via email at [e-mail].
Sincerely,
a
-10 terim Der r Division of Water Resources NCDE
Q
Hardcopy: NPDES Files
Central Files
DWR/Fayetteville Regional Office/Water Quality
Ecopy: US EPA Region 4
DWR/Aquatic Toxicology Branch/Susan Meadows

Permit NCO088366
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENTAL QUALITY
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,
Harnett County Public Utilities
is hereby authorized to discharge wastewater from a facility located at the
South Harnett Regional WWTP
3324 Shady Grove Rd.
Spring Lake
Harnett County
to receiving waters designated as the Lower Little River in the Cape Fear River Basin in accordance with effluent
limitations, monitoring requirements, and other conditions set forth in Parts I,11, III and IV hereof.
This permit shall become effective February 1, 2018.
This permit and authorization to discharge shall expire at midnight on October 31, 2022.
Signed this day December 20, 2017.
AA
L' Culpepper, irector
ion of Water Resources
Authority of the Environmental Management Commission

Permit NCO088366
P
SUPPLEMENT TO PERMIT COVER SHEET
All previous NPDES Permits issued to this facility, whether for operation or discharge are hereby revoked, and as
of this 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.
Harnett County Public Utilities is hereby authorized to:
1. Continue to operate a 15.0 MGD wastewater treatment facility consisting of the following components:
• Headworks including an automatic fine screen with manual bypass, vortex grit chamber, influent
composite sampler, and flow splitter box,
• Three intermittent continuous extended aeration systems with each system including dual 126-ft by
174-ft by 18-ft depth basins providing a total aeration volume of 17.7 MG, a 3.9 MG surge tank, fine -
bubble diffusers, 12 decanter, twelve 25 Hp submersible mixers, and seven 2,300 scf n blowers
• Surge tank
• Nine 12.5 —ft by 52-ft traveling bridge filters
• Three channel UV disinfection system, with each channel capable of treating a peak flow of 12.5
MGD and a total 37.5 MGD
• Cascade aerator with Parshall flume and effluent composite sampler
• A sludge management facility including a 2-meter gravity belt thickener rated at 900 dry pounds/ hour,
a 2.2 meter sludge filter press rated at 2,041 dry pounds/ day with sludge feed pump, screw conveyers,
Class A residuals heated vessel rated at 2,000 pounds/ hour, lime storage silo and delivery system, and
an odor control system
• Dual tertiary traveling bridge filters, with three 12.5-ft by 52-ft units each
• A lime addition system including two 7.5 hp submersible mixers
• A 1,000 KW emergency generator
The facility is located at the South Harnett Regional WWTP on 3324 Shady Grove Rd in Spring Lake,
Harnett County.
2. Discharge from said treatment works via Outfall 001, at the location specified on the attached map into the
Lower Little River currently classified as C waters in subbasin 03-06-14 [HUC: 03030004] of the Cape
Fear River Basin.
Page 2of11

Permit NCO088366
Part I
A. (1) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
[15A NCAC 02B.0400 et seq., 15A NCAC 02B.0500 et seq.]
During the period beginning on the effective date of the permit and lasting until expiration; the Permittee is
authorized to discharge treated domestic wastewater from Outfall 001. Such discharges shall be limited and
monitored' by the Permittee as specified below:
Effluent Characteristics
Discharge Limitations
Monitoring Requirements
Monthly
Weekly
Daily
Measurement
Sample
Sample
Parameter Code
Average
Average
Maximum
Frequency
Type
Location 2
Flow 50050
15.0 MGD
Continuous
Recording
I or E
BODs 3 (April 1— October 31) C0310
5.0 mg/L
7.5 mg/L
2/Week 4
Composite
E and I
BODs 3 C0310
(November 1—March 31)
10.0 m �'
mg/L
15.0 m
2/Week °
Composite
E and I
Total Suspended Solids 3 C0530
30.0 mg/L
45.0 mg/L
2/Week 4
Composite
E and I
NH3-N (April 1— October 31) C0610
1.0 mg/L
3.0 mg2
2/Week 4
Composite
E
NHN
(November 1 —March 31) C0610
2.0mg/L
6.0mg/L
2/Week4
Composite
E
Dissolved Oxygen 00300
Daily Average > 5.0 mg/L
Daily
Grab
E
rm
Fecal Col(Geometric
(Geometric Mean) 31616
Me
200/100ml
400/100m1
2/Week 4
Grab
E
Temperature (OC) 00010
Daily
Grab
E
pH 00400
Between 6.0 and 9.0 standard units
Daily
Grab
E
Hardness- Total as [CaCO3 or (Ca +Mg)] I (mg/L) 00900
Quarterly
Composite
E
Hardness- Total
al as [CaCO3 or
00900
Quarterly
Grab
U
(Ca +Mg)] (mg/L)
Total Copper 3 01042
45.2 µg/L
60.7 µg/L
Monthly
Composite
E
Total NitrogenC0600
'
Monitor & Report (mg/1)
Monthly
Composite
QM600
Monitor & Report (lb/mo)
Monthly
Calculated
E
(April I —October 31)
QS600
160,628 lb/season (summer mass loading)
Annually
Calculated
Total Nitrogen (November 1 —March 31) C0600
Monitor & Report (mg/1)
Monthly
Composite
E
TKN mg/ L 00625
Monthly
Composite
E
NO2 + NO3 mg/ L 00630
Monthly
Composite
E
Total Phosphorus 8 C0665
Monitor & Report (mg/1)
Monthly
Composite
(April 1 —October 31) QM665
Monitor & Report (lb/mo)
Monthly
Calculated
E
QS665
53,543 lb/season (summer mass loading)
Annually
Calculated
Total Phosphorus (November 1 —March 31) C0665
Monitor & Report (mgq)
Monthly
Composite
E
Dissolved Oxygen mg/L9 00300
Variable
Grab
U and D
Temperature (^C) 9 00010
Variable
Grab
U and D
Chronic Toxicity's TGP3B
Quarterly
Composite
E
Effluent Pollutant Scan NC01
Monitor and Report
Footnote I 1
Footnote I 1
E
Footnotes: See next page
Page 3 of 11

Permit NCO088366
1. The permittee shall submit discharge monitoring reports electronically using the NC DWR's eDMR application
system. See Special Condition A. (7).
2. Sample Location: E — Effluent, I — Influent, U — Upstream = at least 50 feet upstream of the discharge, D —
Downstream = at least 500 feet from the discharge. Instream sampling (Upstream and Downstream monitoring) is
waived as long as the Permittee retains membership in the Middle Cape Fear River Basin Association (MCFRBA),
which is conducting a coordinated instream monitoring effort. If the Permittee's membership in the MCFRBA is
terminated, the Permittee must immediately notify the Division in writing, and the instream monitoring requirements
specified in this permit shall be reinstated immediately.
3. The monthly average effluent BOD5 and Total Suspended Solids concentrations shall not exceed 15% of the
respective influent value (85% removal).
4. Twice per week monitoring for BODS, TSS, NH3 N, and fecal coliform for influent and effluent must occur on any
two non-consecutive days during the calendar week (Sunday through Saturday).
5. Metal sampling shall be performed in conjunction with total hardness effluent sampling.
6. The Permittee shall sample instream hardness, upstream of the facility's discharge. The sample shall be
representative of the hardness in the receiving stream. If the Permittee is a member of the Monitoring Coalition
Program, sampling for instream hardness may be waived as long as the Monitoring Coalition agrees to sample
hardness at the nearest upstream location, at a minimum frequency of 'quarterly, and the Permittee has obtained
approval from DWR NPDES Permitting Unit that the upstream station being monitored by the Coalition is
representative of the receiving stream for this discharge. The Permittee is responsible for submitting instream
hardness test results with its permit renewal application package. If Coalition membership is cancelled or the
Coalition terminates instream hardness sampling at the approved station, the Permittee will immediately notify the
Division and resume sampling for instream hardness, upstream of its discharge.
7. TN = TKN + NO3-N + NO2 N where TN is Total Nitrogen, TKN is Total Kjeldahl Nitrogen, and NO3-N + NO2-N
are Nitrate and Nitrite Nitrogen, respectively. See A. (3) for Total Nitrogen calculations.
8. See A. (4) for Total Phosphorous calculations.
9. Variable monitoring frequency is defined as follows: Samples collected three times per week during June 1 through
September 30 and once per week October 1 through May 31.
10. Chronic Toxicity (Cerlodaphnia) limit at 34% with testing in January, April, July, and October [see A. (2)].
11. The permittee shall perform three Effluent Pollutant Scans during the term of this permit [see A. (6)]
There shall be no discharge of floating solids or visible foam in other than trace amounts.
A. (2) CHRONIC TOXICITY PERMIT LIMIT (QUARTERLY)
[I 5A NCAC 02B.0200]
The effluent discharge shall at no time exhibit observable inhibition of reproduction or significant mortality to
Ceriodaphnia dubia at an effluent concentration of 34%.
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 during the months of January, April, July and October.
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 on the Effluent Discharge
Monitoring Form (MR-1) for the months in which tests were performed, using the parameter code TGP3B for the
Page 4of11

Permit NCO088366
pass/fail results and THP3B for the Chronic Value. Additionally, DWR Form AT-3 (original) is to be sent to the
following address:
Attention: North Carolina Division of Water Resources
Water Sciences Section/Aquatic Toxicology Branch
1621 Mail Service Center
Raleigh, NC 27699-1621
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.
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.
A. (3) TOTAL NITROGEN MONITORING/LIMIT
[G.S. 143-215.1(b)]
The Permittee shall calculate the summer mass loading of total nitrogen as the sum of monthly loadings for April
through October, according to the following equations:
Monthly Mass Loading (lb/month) = TN x Q x 8.34 where:
TN = The average total nitrogen concentration (mg/1) of the composite
samples collected during the month
Q = The total wastewater flow discharged during the month (MG/mo)
8.34 = Conversion factor, from (mg/1 x MG) to pounds
Summer Mass Loading (lb/season) = Sum of (Monthly Mass Loadings) for the summer months (April -
October)
The Permittee shall report the total nitrogen concentrations for each sample and the monthly mass loading in the
appropriate self -monitoring report and the summer mass loading of total nitrogen in the October self -monitoring
report for the year
Page 5of11

Permit NCO088366
A. (4) TOTAL PHOSPHORUS MONITORING/LIMIT
[G.S. 143-215.1(b)]
The Permittee shall calculate the summer mass loading of total phosphorus as the sum of monthly loadings for
April through October, according to the following equations:
Monthly Mass Loading (lb/month) = TP x Q x 8.34 where:
TP = The average total phosphorus concentration (mg/1) of the composite
samples collected during the month
Q = The total wastewater flow discharged during the month (MG/mo)
8.34 = Conversion factor, from (mg/l x MG) to pounds
Summer Mass Loading (lb/season) = Sum of (Monthly Mass Loadings) for the summer months (April -
October)
The Permittee shall report the total phosphorus concentration for each sample and the monthly mass loading in the
appropriate self -monitoring report and the summer mass loading of total phosphorus in the October self -monitoring
report for the year.
A. (5) PERMIT RE -OPENER: SUPPLEMENTARY NUTRIENT MONITORING
[G.S. 143-215.1(b)]
Pursuant to N.C. General Statutes Section 143-215.1 and the implementing rules found in Title 15A of the North
Carolina Administrative Code, Subchapter 02H, specifically, 15A NCAC 02H. 0112(b)(1) and 02H. 0114(a), and
Part 11, Sections B.12. and B.13. of this Permit, the Director of DWR may reopen this permit to require
supplemental nutrient monitoring of the discharge. The additional monitoring will be to support water quality
modeling efforts within the Cape Fear River Basin, and shall be consistent with a monitoring plan developed
jointly by the Division and affected stakeholders.
Page 6 of 11

Permit NCO088366
A. (6) EFFLUENT POLLUTANT SCAN
[G.S. 143-215.1(b)]
The Permittee shall perform a total of three (3) Effluent Pollutant Scans for all parameters listed below. One scan
must be performed in each of the following years: 2019, 2020, and 2021. 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) Trans-1,2-dichloroethylene Bis (2-chloroethyl) ether
Chlorine (total residual, TRC) 1,1-dichloroethylene Bis (2-chloroisopropyl) ether
Dissolved oxygen 1,2-dichloropropane Bis (2-ethylhexyl) phthalate
Nitrate/Nitrite 1,3-dichloropropylene 4-bromophenyl phenyl ether
Kjeldahl nitrogen Ethylbenzene Butyl benzyl phthalate
Oil and grease Methyl bromide 2-chloronaphthalene
Phosphorus
Total dissolved solids
Hardness
Antimony
Arsenic
Beryllium
Cadmium
Chromium
Copper
Lead
Mercury (EPA Method 1631 E)
Nickel
Selenium
Silver
Thallium
Zinc
Cyanide
Total phenolic compounds
Volatile or�e�anic compounds:
Acrolein
Acrylonitrile
Benzene
Bromoform
Carbon tetrachloride
Chlorobenzene
Chlorodibromomethane
Chloroethane
2-chloroethylvinyl ether
Chloroform
Dichlorobromomethane
1,1-dichloroethane
1,2-dichloroethane
Methyl chloride
Methylene chloride
1,1,2,2-tetrachloroethane
Tetrachloroethylene
Toluene
1,1,1-trichlomethane
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
Phenol
2,4,6-trichlorophenol
Base -neutral compounds:
Acenaphthene
Acenaphthylene
Anthracene
Benzidine
Benzo(a)anthracene
Benzo(a)pyrene
3,4 benzofluoranthene
Benzo(ghi)perylene
Benzo(k)fluoranthene
Bis (2-chloroethoxy) methane
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 propylamme
N-nitrosodimethylamine
N-nitrosodiphenylamine
Phenanthrene
Pyrene
1,2,4-trichlorobenzene
Reporting. Test results shall be reported on DWR Form -A MR-PPA1 (or in a form approved by the Director) by
December 31 S' of each designated sampling year. The report shall be submitted to the following address: NC DEQ
/ DWR / Central Files,1617 Mail Service Center, Raleigh, North Carolina 27699-1617.
Page 7of11

Permit NCO088366
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 122.216)(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
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.
A. (7) ELECTRONIC REPORTING OF 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)1
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 monitoring data and submit
DMRs electronically using the internet. Until such time that the state's eDMR application is compliant with
EPA's Cross -Media Electronic Reporting Regulation (CROMERR), permittees will be required to submit all
discharge monitoring data to the state electronically using eDMR and will be required to complete the eDMR
submission by printing, signing, and submitting one signed original and a copy of the computer printed eDMR
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
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
Page 8of11

Pernut NC0088366
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 mailing address above. 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, 2020, 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.federaire ister.gov/documents/2015/10/22/2015-24954/national-pollutant-discharge-elim nation-
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 may submit monitoring data and reports on paper to the Division for the period that the
approved reporting waiver request is effective.
Page 9 of 11

Permit NCO088366
Information on eDMR and the application for a temporary electronic reporting waiver are found on the
following web page:
http://deg nc.gov/about/divisions/water-resources/edmur
4. Signatory Requirements [Supplements Section B. (11.) (b) and Supersedes Section B. (11.) (d)]
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:Hdeg.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 WELL BE
ACCEPTED:
7 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. "
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 ].
Page 10 of 11

Permit NCO088366
ci T
Outfall 001
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Hamett CountyPublic Utilities — South Regional WWTP
rFo.t�itfty
State Grid/Ouad: G23NW/Manebester Latitude: 35°13'49"
Longitude: 78°53'00"to
Location
scale
NPDES PemiitNC0088366
ReceivinnStream: Little River Dninane Basic Cope Feet Rites
Stream Class: C Sub -Basin: 03-06-14
HUC: 03030004
North
Hamett County

N C ` 0S`�
Fact Sheet C'
NPDES Permit No. NCO088366
Permit Writer/Email Contact: Bing Bai, [e-mail]
Date: September 27, 2017
Division/Branch: NC Division of Water Resources/NPDES Complex Permitting
Fact Sheet Template: Version 09Jan2017
Permitting Action:
® Renewal
❑ Renewal with Expansion
❑ New Discharge
❑ Modification (Fact Sheet should be tailored to mod request)
Note: A complete application should include the following:
• For New Dischargers, EPA Form 2A or 2D requirements, Engineering Alternatives Analysis, Fee
• For Existing Dischargers (POTW), EPA Form 2A, 3 effluent pollutant scans, 4 21 species WET
tests.
• For Existing Dischargers (Non-POTW), EPA Form 2C with correct analytical requirements based
on industry category.
Complete applicable sections below. If not applicable, enter NA.
1. Basic Facility Information
Facility Information
Applicant/Facility Name:
South Harnett Regional W WTP
Applicant Address:
3324 Shady Grove Road, Spring Lake, NC 28390
Facility Address:
3324 Shady Grove Road, Spring Lake, NC 28390
Permitted Flow:
15.0 MGD
Facility Type/Waste:
MAJOR Municipal; 99% domestic, 1% industrial
Facility Class:
Class 4
Treatment Units:
Bar screen, Grit chamber, Activated Sludge, BNR, UV disinfection,
Cascade reaeration
Pretreatment Program (Y/N)
Yes
County:
Harnett County
Region
Fayetteville
Briefly describe the proposed permitting action and facility background: The South Harnett Regional
W WTP has applied for NPDES permit renewal, and submitted a renewal application dated December 9,
Page 1 of 9

2015. This facility serves a total population of 100,000 including 19,000 residents in the Harnett County
and 81,000 residents in the Fort Bragg/Pope AFB area.
South Harnett Regional W WTP was approved for a pretreatment program with 1 Significant Industrial
User (SILT) — Charah, LLC in April 2016, and conducted metal sampling between April and September
2016 for LTMP.
2. Receiving Waterbody Information:
Receiving Waterbody Information
Outfalls/Receiving Stream(s):
Outfall 001- Lower Little River (LLR)
Stream Segment:
18-23-(24)
Stream Classification:
C
Drainage Area (mi2):
398
Summer 7Q10 (cfs)
44.4
Winter 7Q10 (cfs):
91.8
30Q2 (cfs):
-
Average Flow (cfs):
495.5
IWC (% effluent):
34
303(d) listed/parameter:
No
Subject to TMDUparameter:
No
Subbasin/HUC:
Cape Fear; 03030004
USGS Topo Quad:
G23NW
3. Effluent Data Summary
Effluent data is summarized below for the period January 2012 through March 2017.
Table 3. Effluent Data Summary
Permit
Parameter
Units
Average
Max
Min
Limit
Flow
MGD
4.7
13.4
0.35
15.0
MA 5.0
BOD summer
mg/I
2.2
8.1
< 2
WA 7.5
Page 2 of 9

BOD winter
mg/l
2.2
11
< 2
MA 10.0
WA 15.0
NH3N summer
mg/I
0.55
5.12
<0.04
MA 1.0
WA 3.0
NH3N winter
mg/l
1.14
10.1
0.19
MA 2.0
WA 6.0
TSS
mg/1
2.5
28
< 1.5
MA 30.0
WA 45.0
pH
SU
6.8
7.4
6
6-9
Temperature
°C
20.2
28.7
2
DO
mg/1
8.7
12.5
5.7
> 5.0
TN
mg/l
6.1
16.8
1
TN seasonal load
lbs/season
21,016
160,628
3,718
160,628
TP
mg/l
3.39
7.56
0.68
TP seasonal load
lbs/season
10,159
53543
2172
53,543
Fecal Coliform
#/100 ml
6.5
2,200
< 1
MA 200
WA 400
MA -Monthly Average, WA -Weekly Average
4. Instream Data Summary
Instream monitoring may be required in certain situations, for example: 1) to verify model predictions
when model results for instream DO are within 1 mg/l of instream standard at full permitted flow; 2) to
verify model predictions for outfall diffuser; 3) to provide data for future TMDL; 4) based on other
instream concerns. Instream monitoring may be conducted by the Permittee, and there are also
Monitoring Coalitions established in several basins that conduct instream sampling for the Permittee (in
which case instream monitoring is waived in the permit as long as coalition membership is maintained).
If applicable, summarize any instream data and what instream monitoring will be proposed for this
permit action: The current permit requires instream monitoring for temperature and dissolved oxygen.
Review of instream data from February 2012 to December 2016 indicates that the dissolved oxygen
standard of 5 mg/L was maintained, and there were no significant differences between upstream
(137300000) and downstream stations (137319100) (ANOVA, p > 0.05). The average over the period
analyzed indicated that DO was 8.67 mg/L at upstream stations and 8.66 mg/L at downstream stations.
During the critical summer months (April -October), minimum values of 6.19 mg/L upstream and 6.16
mg/L downstream occurred with averages between 7.58 mg/L and 7.56 mg/L respectively. This draft
permit maintains the same instream monitoring requirements.
Page 3 of 9

Is this facility a member of a Monitoring Coalition with waived instream monitoring (YIN): Yes
Name of Monitoring Coalition: Middle Cape Fear River Basin Association (MCFRBA)
5. Compliance Summary
Summarize the compliance record with permit effluent limits (past 5 years): The facility reported no
violation during the last permit cycle.
Summarize the compliance record with aquatic toxicity test limits and any second species test results
(past 5 years): The facility passed 19 of 19 quarterly chronic toxicity tests, as well as all 5 second species
chronic toxicity tests.
Summarize the results from the most recent compliance inspection: The last facility inspection conducted
on August 25, 2016 reported that the facility was well maintained and operated in compliant.
6. Water Quality -Based Effluent Limitations (WQBELs)
Dilution and MixingZones
ones
In accordance with 15A NCAC 2B.0206, the following streamflows are used for dilution considerations
for development of WQBELs: IQ10 streamflow (acute Aquatic Life); 7Q10 streamflow (chronic Aquatic
Life; non -carcinogen fill); 30Q2 streamflow (aesthetics); annual average flow (carcinogen, BE).
If applicable, describe any other dilution factors considered (e.g., based on CORMIX model results): NA
If applicable, describe any mixing zones established in accordance with 15A NCAC 1B.0204(b): NA
Oxygen -Consuming Waste Limitations
Limitations for oxygen -consuming waste (e.g., BOD) are generally based on water quality modeling to
ensure protection of the instream dissolved oxygen (DO) water quality standard. Secondary TBEL limits
(e.g., BOD= 30 mg/l for Municipals) may be appropriate if deemed more stringent based on dilution and
model results.
Ifpermit limits are more stringent than TBELs, describe how limits were developed: In keeping with the
Basinwide Quality Plan for new and expanding POTWs, the treatment system was designed to meet
BODs of 5.0 mg/L and ammonia nitrogen of 1.0 mg/L. No changes are proposed from the previous
permit limits.
Ammonia and Total Residual Chlorine Limitations
Limitations for ammonia are based on protection of aquatic life utilizing an ammonia chronic criterion of
1.0 mg/l (summer) and 1.8 mg/l (winter). Acute ammonia limits are derived from chronic criteria,
utilizing a multiplication factor of 3 for Municipals and a multiplication factor of 5 for Non -Municipals.
Limitations for Total Residual Chlorine (TRC) are based on the NC water quality standard for protection
of aquatic life (17 ug/1) and capped at 28 ug/1(acute impacts). Due to analytical issues, all TRC values
reported below 50 ug/l are considered compliant with their permit limit.
Page 4 of 9

Describe any proposed changes to ammonia and/or TRC limits for this permit renewal: This facility uses
UV disinfection so no TRC limit is warranted. The current ammonia standard is more stringent than
allowed by the Waste Load Allocation. There are no proposed changes.
Reasonable Potential Analvsis (RPA) for Toxicants
If applicable, conduct RPA analysis and complete information below.
The need for toxicant limits is based upon a demonstration of reasonable potential to exceed water quality
standards, a statistical evaluation that is conducted during every permit renewal utilizing the most recent
effluent data for each outfall. The RPA is conducted in accordance with 40 CFR 122.44 (d) (i). The NC
RPA procedure utilizes the following: 1) 95% Confidence Level/95% Probability; 2) assumption of zero
background; 3) use of/2 detection limit for "less than" values; and 4) streamflows used for dilution
consideration based on 15A NCAC 2B.0206. Effective April6, 2016, NC began implementation of
dissolved metals criteria in the RPA process in accordance with guidance titled NPDES Implementation of
Instream Dissolved Metals Standards, dated June 10, 2016.
A reasonable potential analysis was conducted on effluent toxicant data collected between October 2013
and April 2017 for arsenic, beryllium, cadmium, total chromium, copper, cyanide, lead, molybdenum,
nickel, selenium, silver and zinc. Pollutants of concern included toxicants with positive detections and
associated water quality standards/criteria. Based on this analysis, the following permitting actions are
proposed for this permit:
• Effluent Limit with Monitoring. The following parameters will receive a water quality -based
effluent limit (WQBEL) since they demonstrated a reasonable potential to exceed applicable
water quality standards/criteria: copper
• Monitoring Only. The following parameters will receive a monitor -only requirement since they
did not demonstrate reasonable potential to exceed applicable water quality standards/criteria,
but the maximum predicted concentration was >50% of the allowable concentration: NA
• No Limit or Monitoring: The following parameters will not receive a limit or monitoring, since
they did not demonstrate reasonable potential to exceed applicable water quality
standards/criteria and the maximum predicted concentration was <50% of the allowable
concentration: arsenic, beryllium, cadmium, total chromium, cyanide, lead, molybdenum, nickel,
selenium, silver and zinc.
• POTW Effluent Pollutant Scan Review: Three effluent pollutant scans were evaluated for
additional pollutants of concern.
o The following parameter(s) will receive a water quality -based effluent limit (WQBEL)
with monitoring, since as part of a limited data set, two samples exceeded the allowable
discharge concentration: NA
o The following parameter(s) will receive a monitor -only requirement, since as part of a
limited data set, one sample exceeded the allowable discharge concentration: NA
If applicable, attach a spreadsheet of the RPA results as well as a copy of the Dissolved Metals
Implementation Fact Sheet forfreshwater/saltwater to this Fact Sheet. Include a printout of the RPA
Dissolved to Total Metal Calculator sheet if this is a Municipality with a Pretreatment Program.
Toxicity Testing Limitations
Permit limits and monitoring requirements for Whole Effluent Toxicity (WET) have been established in
accordance with Division guidance (per WET Memo, 8/2/1999). Per WET guidance, all NPDES permits
issued to Major facilities or any facility discharging "complex" wastewater (contains anything other than
domestic waste) will contain appropriate WET limits and monitoring requirements, with several
Page 5 of 9

exceptions. The State has received prior EPA approval to use an Alternative WET Test Procedure in
NPDES permits, using single concentration screening tests, with multiple dilution follow-up upon a test
failure.
Describe proposed toxicity test requirement: This is a Major POTW, and a chronic WET limit at 34%
effluent will continue on a quarterly frequency.
Mercury Statewide TMDL Evaluation
There is a statewide TMDL for mercury approved by EPA in 2012. The TMDL target was to comply
with EPA's mercury fish tissue criteria (0.3 mg/kg) for human health protection. The TMDL established a
wasteload allocation for point sources of 37 kg/year (81 lb/year), and is applicable to municipals and
industrial facilities with known mercury discharges. Given the small contribution of mercury from point
sources (-2% of total load), the TMDL emphasizes mercury minimisation plans (MMPs) for point source
control. Municipal facilities > 2 MGD and discharging quantifiable levels of mercury (>1 ng/1) will
receive an MMP requirement. Industrials are evaluated on a case -by -case basis, depending if mercury is a
pollutant of concern. Effluent limits may also be added if annual average effluent concentrations exceed
the WQBEL value (based on the NC WQS of 12 ng/l) and/or if any individual value exceeds a T 3EL
value of 47 ng/1
Table 4. Mercury Effluent Data Summary
2012
2013
2014
2015
2016
# of Samples
1
1
1
1
6
Annual Average Conc. n
< 1
< 1
< 1
< 1
0.5
Maximum Conc., n
< I
< 1
< 1
< 1
< I
TBEL, ngIL
47
WQBEL, ng/L
34.9
Describe proposed permit actions based on mercury evaluation: Since no annual average mercury
concentration exceeded the WQBEL and no quantifiable levels of mercury (> 1 ng/1) was reported, the
mercury minimization plan (MMP) is not required in this permit.
Other TMDL/Nutrient Management Strateav Considerations
If applicable, describe any other TMDLs/Nutrient Management Strategies and their implementation
within this permit: In keeping with the 2010 Basinwide Quality Plan, seasonal mass based limits are
placed as 160,628 lb/season for TN and 53,543 lbs/season for TP, equivalent to 6.0 mg/L TN and 2.0
mg/L TT` for the time period of April through October at the permitted flow of 15.0 MGD.
Other WOBEL Considerations
If applicable, describe any other parameters of concern evaluated for WQBELs: NA
If applicable, describe any special actions (HQW or ORW) this receiving stream and classification shall
comply with in order to protect the designated waterbody: NA
If applicable, describe any compliance schedules proposed for this permit renewal in accordance with
15A NCAC 2H. 010 7(c) (2) (B), 40CFR 122.47, and EPA May 2007Memo: NA
Page 6 of 9

If applicable, describe any water quality standards variances proposed in accordance with NCGS 143-
215.3(e) and 15A NCAC 2B.0226for this permit renewal: NA
7. Technology -Based Effluent Limitations (TBELs)
Municipals
Are concentration limits in the permit at least as stringent as secondary treatment requirements (30 mg1l
BODS/TSSfor Monthly Average, and 45 mg/1 for BOD51TSSfor Weekly Average). NA
If NO, provide a justification for alternative limitations (e.g., waste stabilization pond). NA
Are 85%removal requirementsfor BOD51TSS included in the permit? YES
If NO, provide a justification (e.g., waste stabilization pond). NA
8. Antidegradation Review (New/Expanding Discharge):
The objective of an antidegradation review is to ensure that a new or increased pollutant loading will not
degrade water quality. Permitting actions for new or expanding discharges require an antidegradation
review in accordance with 15A NCAC 2B.0201. Each applicant for a new/expanding NPDES permit
must document an effort to consider non -discharge alternatives per 15A NCAC 2H.0105(c)(2). In all
cases, existing instream water uses and the level of water quality necessary to protect the existing use is
maintained and protected.
If applicable, describe the results of the antidegradation review, including the Engineering Alternatives
Analysis (EAA) and any water quality modeling results: NA
9. Antibacksliding Review:
Sections 402(o)(2) and 303(d)(4) of the CWA and federal regulations at 40 CFR 122.44(1) prohibit
backsliding of effluent limitations in NPDES permits. These provisions require effluent limitations in a
reissued permit to be as stringent as those in the previous permit, with some exceptions where limitations
may be relaxed (e.g., based on new information, increases in production may warrant less stringent TBEL
limits, or WQBELs may be less stringent based on updated RPA or dilution).
Are any effluent limitations less stringent than previous permit (YESINO): NO
If YES, confirm that antibackslidingprovisions are not violated: NA
10. Monitoring Requirements
Monitoring frequencies for NPDES permitting are established in accordance with the following
regulations and guidance: 1) State Regulation for Surface Water Monitoring, 15A NCAC 2B.0500; 2)
NPDES Guidance, Monitoring Frequency for Toxic Substances (7/15/2010 Memo); 3) NPDES Guidance,
Reduced Monitoring Frequencies for Facilities with Superior Compliance (10/22/2012 Memo); 4) Best
Professional Judgement (BPJ). Per US EPA (Interim Guidance, 1996), monitoring requirements are not
considered effluent limitations under Section 402(o) of the Clean Water Act, and therefore anti -
backsliding prohibitions would not be triggered by reductions in monitoring frequencies.
Page 7 of 9

Monitoring Frequency Reduction Evaluation was performed on April 13, 2015 and the wastewater
treatment plant was found to be exceptionally performing facility. Monitoring frequency reductions were
allowed for BODs, TSS, NH3-N and Fecal Coliform.
For instream monitoring, refer to Section 4.
11. Electronic Reporting Requirements
The US EPA NPDES Electronic Reporting Rule was finalized on December 21, 2015. Effective
December 21, 2016, NPDES regulated facilities are required to submit Discharge Monitoring Reports
(DMRs) electronically. Effective December 21, 2020, NPDES regulated facilities will be required to
submit additional NPDES reports electronically. This permit contains the requirements for electronic
reporting, consistent with Federal requirements.
12.Summary of Proposed Permitting Actions:
Table 5. Current Permit Conditions and Proposed Changes
Parameter
Current Permit
Proposed Change
Basis for Condition/Change
Flow
MA 15.0 MGD
No change
15A NCAC 2B .0505
BODs
Summer:
No change
WQBEL. Based on protection of DO
MA 5 mg/l
standard. 15A NCAC 2B.0200
WA 7.5 mg/l
Winter.
MA 10 mg/l
WA15mg/l
NH3-N
Summer:
No change
WQBEL. Based on protection of
MA 1 mg/l
State WQ criteria. 15A NCAC
WA 3 mg/l
2B.0200
Winter:
MA 2 mg/l
WA6mg/l
TSS
MA 30 mg/l
No change
TBEL. Secondary treatment
WA 45 mg/l
standards/40 CFR 133 / 15A NCAC
2B .0406
Fecal coliform
MA 200 /100ml
No change
WQBEL. State WQ standard, 15A
WA 400 /100ml
NCAC 2B.0200
DO
> 5 mg/l
No change
WQBEL. State WQ standard, 15A
NCAC 2B.0200
pH
6 — 9 SU
No change
WQBEL. State WQ standard, 15A
NCAC 2B.0200
Total Nitrogen
Monitor only
No change
Basinwide WQ Plan; 15A NCAC
Seasonal mass load of
2B.0500
160,628 lb
Total Phosphorus
Monitor only
No change
Basinwide WQ Plan; 15A NCAC
Season mass load of
2B.0500
53,543 lb
Page 8 of 9

Toxicity Test
Chronic limit, 34%
No change
WQBEL. No toxics in toxic
effluent
amounts. 15A NCAC 213.0200 and
15A NCAC 213.0500
Effluent Pollutant
Three times per permit
No change
40 CFR 122
Scan
cycle
Electronic
No requirement
Add Electronic
In accordance with EPA Electronic
Reporting
Reporting Special
Reporting Rule 2015. Reasonable
Condition
Potential Analysis
Total Copper
No requirement
MA 45.2 µg/L
RP shown in Reasonable Potential
DM 60.7 µg/L
Analysis
Monitor Monthly,
composite
Total Hardness
No requirement
Add effluent and
Required to assess dissolved metal
upstream monitoring
limitations
based on the new 2016
dissolved metal
standards
MGD — Million gallons per day, MA - Monthly Average, WA — Weekly Average, DM — Daily Max
13. Public Notice Schedule:
Permit to Public Notice: 10/04/2017
Per 15A NCAC 2H .0109 & .0111, The Division will receive comments for a period of 30 days following
the publication date of the public notice. Any request for a public hearing shall be submitted to the
Director within the 30 days comment period indicating the interest of the party filing such request and the
reasons why a hearing is warranted.
14. Fact Sheet Addendum (if applicable):
Were there any changes made since the Draft Permit was public noticed (Yes/No): NO
If Yes, list changes and their basis below: NA
15. Fact Sheet Attachments (if applicable):
• RPA Spreadsheet Summary
• Dissolved Metals Implementation/Freshwater or Saltwater
• Instream DO Summary
• NH3-N and TRC WLA
• Mercury TMDL Evaluation
• Monitoring frequency reduction evaluation
Page 9 of 9

Permit No. NCO088366
NPDES Implementation of fnstream 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 1. NC Dissolved Metals Water Ouality Standards/Aquatic Life Protection
Parameter
Acute FW, µg/l
(Dissolved)
Chronic FW, µg/l
(Dissolved)
Acute SW, µg/l
(Dissolved)
Chronic SW, µg/l
(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
190
1 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 2. 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/I
Cadmium, Acute
WER*(1.136672-[In hardness](0.041838)} • e^{0.9151 [In hardness]-3.1485}
Cadmium, Acute Trout waters
WER* 11. 136672-[In hardness](0.041838)) - ell {0.9151[in hardness]-3.6236}
Cadmium, Chronic
WER* (1.101672-[In hardness](0.041838)) - e"{0.7998[in hardness]-4.4451 }
Chromium III, Acute
WER*0.316 - e^{0.8190[In hardness]+3.7256}
Chromium III, Chronic
WER*0.860 • e"(0:8190[ln hardness]+0.6848)
Copper, Acute
WER*0.960 - eA(0.9422[ln hardness]-1.700)
Copper, Chronic
WER*0.960 - eA(0.8545[ln hardness]-1.702)
Lead, Acute
WER*(1.46203-[In hardness](0.145712)) - e^{1.273[ln hardness]-1.460)
Lead, Chronic
WER*{1.46203-[In 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 - eA(0.8460[ln hardness]+0.0584)
Page Iof4

Permit No. NCO088366
Silver, Acute
WER*0.85 - eA(l.72[In 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/WOBELs 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.
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 1 Q 10 using the formula 1 Q 10 = 0.843 (s7Q 10, cfs) 0.111
• 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.
Page 2 of 4

Permit No. NCO088366
The overall hardness value used in the water quality calculations is calculated as follows:
Combined Hardness (chronic)
= (Permitted Flow, cfs *Avg. Effluent Hardness, mgZL) + (s7Q 10, 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 IQ 10 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.
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:
Cdiss = 1
Ctotal 1 + { [Kp.] [ss(t*a)] [10-6] }
Where:
ss = in -stream suspended solids concentration [mg/1], 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 sheet labeled DPCs.
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 = (s7010 + Qw) (Cwgs) — (s7Q10) (Cb)
Qw
Where: Ca = allowable effluent concentration (µg/L or mg/L)
Cwgs = 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 s7Q 10 may be incorporated as applicable:
IQ 10 = used in the equation to protect aquatic life from acute toxicity
Page 3 of 4

Permit No. NC0088366
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 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 nitoring 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:
Parameter
Value
Comments (Data Source)
Average Effluent Hardness (mg/L)
113.3
Average from DMRs
[Total as, CaCO3 or (Ca+Mg)]
January 2012 - March 2017
Average Upstream Hardness (mg/L)
25.0
Default with no data
[Total as, CaCO3 or (Ca+Mg)]
7Q10 summer (cfs)
44.4
NPDES files, BIMS
1 Q 10 (cfs)
36.45
Calculated from 7Q 10 summer
Permitted Flow (MGD)
15.0
NPDES files, BIMS
Date: 5/12/2017
Permit Writer: Bing Bai
Page 4of4

Instream DO Data
Upstream
Downstream
Date Parameter
B7300000
B7319100
2016-12-01 DO, mg/L
8.6
8.8
2016-11-03 DO, mg/L
8.6
8.4
2016-10-06 DO, mg/L
7.6
7.6
2016-09-15 DO, mg/L
7.1
7.1
2016-08-04 DO, mg/L
6.8
6.6
2016-07-07 DO, mg/L
6.2
6.6
2016-06-09 DO, mg/L
7.3
7.1
2016-05-12 DO, mg/L
8
7.9
2016-04-07 DO, mg/L
9.2
9.2
2016-03-08 DO, mg/L
30
9.8
2016-02-12
DO, mg/L
10.6
10.7
2016-01-07 DO, mg/L
11.4
11.5
2015-12-10 DO, mg/L
10.8
10.6
2015-11-12', DO, mg/L
8.8
8.9
2015-10-06
DO, mg/L
8.6
8.4
2015-09-03
i DO, mg/L
7.3
7.3
2015-08-06 DO, mg/L
6.4
6.6
2015-07-14 DO, mg/L
6.3
6.7
2015-06-02 DO, mg/L
6.9
6.8
2015-05-11 DO, mg/L
7.6
7.6
2015-04-15
DO, mg/L
8.6
8.6
2015-03-051
DO, mg/L
11.5
11.4
2015-02-12 ' DO, mg/L
12
11.7
2015-01-15 DO, mg/L
11.8
12
2014-12-08 DO, mg/L
10.8
10.8
2014-11-06 DO, mg/L
10.2
10.1
! 2014-10-09 , DO, mg/L
8.6
8.5
2014-09-11 DO, mg/L
7.7
7.7
2014-08-07 DO, mg/L
7.5
7.5
2014-07-03 DO, mg/L
6.6
6.5
2014-06-05 DO, mg/L
7
7.2
1 2014-05-01 i DO, mg/L
7.7
7.6
2014-04-03 DO, mg/L
8.7
8.5
2014-03-06 DO, mg/L
11.2
11.2
2014-01-28 DO, mg/L
12.2
12.2
2013-12-20 DO, mg/L
11.31
11.44
2013-11-07 DO, mg/L
8.38
8.32
2013-10-10 DO, mg/L
8.11
7.63
2013-09-25 DO, mg/L
7.53
7.58
Date Parameter Upstream Downstream
B7300000 B7319100
r2013-08-08 DO, mg/L 7.16 7.26
2013-07-31
DO, mg/L
7.54
7.03
2013-06-13
DO, mg/L
6.84
6.62
2013-05-02
DO, mg/L'
8.78
8.88
12013-04-25
DO, mg/L
8.94
8.83
2013-03-14
DO, mg/L
10.11
10.15
2013-02-21
DO, mg/L
11.51
11.33
2013-01-10
DO, mg/L
10.41
10.26
2012-12-04
DO, mg/L
9.78
10.11
2012-11-29
DO, mg/L
10.01
10.1
2012-10-30
DO, mg/L
8.47
8.44
2012-09-06
DO, mg/L
6.51
6.71
2012-08-02
DO, mg/L
6.57
6.57
2012-07-05
DO, mg/L
6.19
6.16
2012-06-07
DO, mg/L
7.18
7.75
2012-05-17
DO, mg/L
7.47
7.37
2012-04-05
DO, mg/L
7.81
7.58
2012-03-01
DO, mg/L
9.6
9.41
2012-02-08
DO, mg/L
10.44
11.12
ANOVA, p=0.98

Summer
Critical Date
2016-10-06
2016-09-15
2016-08-04
2016-07-07
2016-06-09
2016-05-12
2016-04-07
2015-10-06
2015-09-03
2015-08-06
2015-07-14
2015-06-02
2015-05-11
2015-04-15
2014-10-09
2014-09-11
2014-08-07
2014-07-03
2014-06-05
2014-05-01
2014-04-03
2013-10-10
2013-09-25
2013-08-08
2013-07-31
2013-06-13
2013-05-02
2013-04-25
2013-03-14
2012-10-30
2012-09-06
2012-08-02
2012-07-05
2012-06-07
2012-05-17
2012-04-05
Upstream Downstream
Parameter B7300000 B7319100
DO, mg/I
DO, mg/I
DO, mg/I
DO, mg/I
DO, mg/I
DO, mg/I
DO, mg/I
DO, mg/I
DO, mg/I
DO, mg/I
DO, mg/I
DO, mg/I
DO, mg/I
DO, mg/I
DO, mg/I
DO, mg/I
DO, mg/I
DO, mg/I
DO, mg/I
DO, mg/I
DO, mg/I
DO, mg/I
DO, mg/I
DO, mg/I
DO, mg/I
DO, mg/I
DO, mg/I
DO, mg/I
DO, mg/I
DO, mg/I
DO, mg/I
DO, mg/I
DO, mg/I
DO, mg/I
DO, mg/I
DO, mg/I
f Wfiaikmr*0% L
fAVOW
ANOVA, p=0.92
7.6
7.1
6.8
6.2
7.3
8
9.2
8.6
7.3
6.4
6.3
6.9
7.6
8.6
8.6
7.7
7.5
6.6
7
7.7
8.7
8.11
7.53
7.16
7.54
6.84
8.78
8.94
10.11
8.47
6.51
6.57
6.19
7.18
7.47
7.81
0.119
Z54
7.6
7.1
6.6
6.6
7.1
7.9
9.2
8.4
7.3
6.6
6.7
6.8
7.6
8.6
8.5
7.7
7.5
6.5
7.2
7.6
8.5
7.63
7.58
7.26
7.03
6.62
8.88
8.83
10.15
8.44
6.71
6.57
6.16
7.75
7.37
7.58

Freshwater RPA - 95% Probability/95% Confidence Using Metal Translators
MAXIMUM DATA POINTS = 58
REQUIRED DATA ENTRY
Table 1. Project Information
Facility Name
W WTPfWTP Class
NPDES Permit
ouffall
Flow, Ow (MGD)
Receiving Stream
HUC Number
Stream Class
[—]CHECK IF HQW OR ORW WQS
S. Harnett Regional W WTP
4
NCO088366
001
15.000
Lower Little River
03030004
C
❑Apply WS Hardness WQC
7Q10s (cli
7Q10w (cfs)
3002 (cfs)
QA (cfs)
101 Os (cfs)
Effluent Hardness
Upstream Hardness
Combined Hardness Chronic
Combined Hardness Acute
44AO
91.80
495.50
113.31 mg/L(Avg)
L _____ 25 mg/(Avg)
� 55.35 mg/L
59.39 an
Data Sources)
IICHECK TO APPLY MODEL
Partt
Paii
Par03
Pardus
Paris
Pardan
Peter
Pa ()8
Parts
Pertt
Par11
Par12
Par13
Pardus
Par15
Parts
PariT
Paris
Par19
Par20
Par21
Par22
Par23
Pardus
Table 2. Parameters of Concern
Name was Type Chronic fwdifie, Acute PQL Units
Arsenic
Aquactic Life
C
150
FW
340
ug/L
Arsenic
Human Health
water Supply
C
10
HH/WS
N/A
uglL
Beryllium
Aquatic Life
NC
6.5
FW
65
ug/L
Cadmium
Aquatic Life
NC
1.0756
FW
6.8927
ug/L
Chlorides
Aquatic Life
NC
230
FW
ri
Chlorinated Phenolic Compounds
Water Supply
NC
1
A
uglL
Total Phenolic Compounds
Aquatic Life
I NCI
300
A
I ui
Chromium 111
Aquatic Life
NC
225.7339
FW
1838.4648
uglL
Chromium VI
Aquatic Life
NC
11
FW
16
pg/L
Chromium, Total
Aquatic Life
NC
N/A
FW
N/A
pg/L
Copper
Aquatic Life
NC
15.5423
FW
23.6643
ug/L
Cyanide
Aquatic Life
NC
5
FW
22
10
ug/L
Fluoride
Aquatic Life
NC
1,800
FW
ug/L
Lead
Aquatic Life
NC
7.1473
FW
198.2786
ug/L
Mercury
Aquatic Life
NC
12
FW
0.5
nglL
Molybdenum
Human Health
NC
2000
HH
j
j uglL
Nickel
Aquatic Life
NC
72.9338
FW
696.9939
pg/L
Nickel
water Swply
NC
25.0000
WS
N/A
pg/L
Selenium
Aquatic Life
NC
5
FW
56
ug/L
Silver
Aquatic Life
NC
0.06
FW
1.3129
1
Zinc
Aquatic Life
NC
248.5192
FW
261.6709
ug/L
NCO088366 RPA.xlsm, input
5/15/2017

S. Harnett Regional WWTP x
NCO088366 Freshwater RPA - 95% Probabilityl95% Confidence Using Metal Translators
MAXIMUM DATA POINTS = 58
Qw(MOD)= 15.00 WWTP/WTP Class:4
IQIOS(cfs)= 36.45 IWC% Q IQIOS = 38.94472362
7QIOS lots)= 44.40 IWC-/ Q7Q10S= 34.36807096
7QI0W(cfs)= 91.80 IWC%®7QIOW- 20.20860495
30Q2(cost = NO 3002 DATA IWC%Q 30Q2- NIA
Avg. Stream Flow, QA (cfs) = 495.50 IW9aC ®QA — 4.481927711
Receiving Stream: Lower Little River HUC 03030004 Stream Class: C
Acute = 59.39 mg/L
Chronic = 55.35 mg/L
Outfal 1001
Qw = 15 MGD
PARAMETER
NC STANDARDS OR EPA CRITERIA
REASONABLE POTENTIAL RESULTS
RECOMMENDED ACTION
TYPE
Chronic
pad Acute
D # Det. Max Pred Cw Allowable Cw
(f)
M
S�
Acute (FW): 873.0
Arsenic
C
150 FW(7QIOs) 340
ug/L
10 10
2.5
Chronic (FW): 436.5
NO RP, Pretliotetl htax<50%af Allowable Cw-No
No value_> Allowable Cw
Monitoring requiretl
Arsenic
C
10 HH/WS(Qavg)
ug/L
Chronic(HH): 223.1
No RP, PrediGed Max<50%of Allowable Cw-NO
No value > Allowable Cw
Monitoring required
Acute: 166.90
Beryllium
NC
6.5 FW(7QIOs) 65
ug/L
5 0
NO DETECTS
_ _
_ _ _
Note: n < 9
Chronic: 18.91
NORP, PremGed Mez<50%of Allowable Cw-No
Limited data set
Max MDL = I
Monitoring required
Acute: 17.699
Cadmium
NC
1.0756 FW(7QIOs) 6.8927
ug/L
8 0
NO DETECTS
---------------------------------------
Notice.: n<9
_ _ _
Chrome: 3.130
No RP. Predicted Max <50%of Allowable Cw - No
Limited data set
Max MDL = I
Monitoring required
Acute: 41.1
Chromium VI
NC
II FW(7QIOs) 16
ug 1.
0 0
N/A
_ ___ ________
_
Chronic: 32.0--
__ _____
Chromium, Total
NC
p,_'1,
10 0
\'O DETECTS
a. No Monitoring required If all Total Chromium
samples are <me Chromium M Allowable Cw
Max MDL = 5
Acute: 60.76
Copper
NC
15.5423 FW(7QIOs) 23.6643
ue 1,
10 8
49.80
_ _ _ __ _ _ __
_________ _ _ _ _ ___ ____
Chronic: 45.22
RP shown - apply Monthly Monitoring with Limit
No value> Allowable Cw
Acute: 56.5
Cyanide
NC
5 FW(7QIOs) 22
10
ug/L
3 0
.PO DETECTS
_
_ _ _ _ _ __
Note: n < 9
Chronic: 14.5
No RP, Predicted Max<50%Of Allowable Cw-No
Limited data set
Mae MDL = 10
Monitoring required
Acute: 509.128
Lead
NC
7.1473 FW(7QIOs) 198,2786
ug/L
10 0
NO DETECTS
_ _ _ _ _ _ _ _ _ _ __
_ _ _ _ _
Chronic: 20.796
_
NO RP, Predined Max<50%of PJlowable Cw-NO
Max MDL =5
Monitoring required
Acute: NO WQS
Molybdenum
TNC
2000 HH(7QIOs)
ug/L
8 0 NO DETEC7S
_ _ _ -------------------------------------
Note; . < 9
Chronic: 5.819.4
NORP, Predicted Max<50%of AJIovvdble Cw-No
Lituited data set
Max MDL = 10
Monitoring requiretl
NCO088366 RPA, ma
Page t of 2 9/28/2017

S. Harnett Regional WWTP Outfall 001
NCO088366 Freshwater RPA - 95% Probability/95% Confidence Usinq Metal Translators Ow = 15 MGD
-
—
Acute 1,789.7-
—
Nickel
NC
72.9338 FW(7QIOs) 696.9939
pg/L
_ _
10 0
VO DETECTS
Chronic (FN): 212.2
NO RP. Prediced Maz < 50%of Moweble Cw- No
Max MDL = 10
Monitoring required
Nickel
NC
25.0000 WS(7QIOs)
pg/L
ChroniC(WS):---72.7--
---------------------------
Mae MDL = 10
Acute: 143.8
Selenium
NC
5 17W(7QIOs) 56
uvd,
Ilt U
`:U DETEC7S
_ _ _ ____ _ __
Chronic: 14.5
_ _ _ _ _ _ _ _ _ _ _
NO RP, Predicted Mez<50%af Allowable Cw-No
Max MDL = 10
Monitoring required
Acute: 3.371
rimer
NC
0.06 FW(7QlOs) 1.3129
ug;'L
3 0
�•n OF,TF.CTS
Note: n<q
_
Chronic: 0.175
No RP, Predlded Maz<50%o(Pllowable Cw-No
Limiled debt set
Max MDL = 5
Monitoring required
Acute: 671.9
zinc
NC
248.5192 FW(7QIOs) 261.6709
ug/L
10 10
164.2
____
Chronic: 7231
_ _ _ _ _ _ _ _ _ _ _
NO RP. Predicted Mmx 50%at Allowable Cw-No
Vm:du: Allotcahlr tA,
Monitoring requred
NC0008366 RPA, Me
Page 2 of 2 912MO17

REASONABLE POTENTIAL ANALYSIS
Effluent Hardness
Use 'PASTE SPECIAL
velwrmen-COPr.
H2
. Maximum data
pants=58
Data
Data
BDL=112DL
Results
1
4/9/2015
116
116
Std Dev.
16.5155
1
2
3/16/2016
ill
Ill
Mean
113.3086
2
3
3/23/2016
124
124
C.V.
0.1458
3
4
3/28/2016
116
116
n
35
4
5
5/4/2016
127
127
10th Per value
93.40 mg/L
5
6
5/11/2016
129
129
Average Value
113.31 mg/L
6
7
5/18/2016
132
132
Max. Value
159.00 mg/L
7
8
6/25/2016
140
140
8
9
6/2/2016
126
126
9
10
6/8/2016
159
159
10
11
6/15/2016
114
114
11
12
6/24/2016
113
113
12
13
6/29/2016
104
104
13
14
71712016
124
124
14
15
7115/2016
131
131
15
16
7/20/2016
122
122
16
17
7/27/2016
110
110
17
18
SIX2016
116
116
18
19
8/10/2016
103
103
19
20
8/17/2016
84
84
20
21
8/24/2016
109
109
21
22
6/31/2016
83
83
22
23
9/8/2016
106
106
23
24
9/14/2016
116
116
24
25
9/21/2016
105
105
25
26
9/28/2016
103
103
26
27
10/6/2016
98
98
27
28
10114IM16
96
96
28
29
10119/2016
93
93
29
3D
10/26/2016
94
94
30
31
3/1/2017
114.1
114.1
31
32
3/8/2017
117.7
117.7
32
33
3/15/2017
81A
SIA
33
34
3/22/2017
119.3
119.3
34
35
3/29/2017
129.3
129.3
35
Hardness
Date Dala BDL=112DL Result
25 25 Sld Dev.
Mean
C.V.
n
101h Per value
Average Value
Max. Value
W. "PASTE SPECW. Par01 3 Par02
Values" Men "COPY"
. Maximum dad
points =SS
Date
NIA 1 4/9/2015
25.0000 2 4/21/2018
0.0000 3 5/2/2016
1 4 6115/2016
25.00 mg/L 5 7/7/2016
25.00 mg/L 6 7/26/2016
25.00 mg/L 7 8/1I2016
8 9/612016
9 3/30/2017
10 4/5/2017
Arsenic
Data BDL=112DL
2.5 2.5
2.5 2.5
2.5 2.5
2.5 2.5
2.5 2.5
2.5 2.5
2.5 2.5
2.5 2.5
2.5 2.5
2.5 2.5
Use"PASTE SPECIAL
Vaiues"then "COPY"
. Maximum deft
Paints = SB
Results
Sid Dev.
0.0000
Mean
2.5000
C.V.
0.0000
n
10
Mull Factor = 1.00
Max. Value 25 ug/L
Max. Pred Cw 25 ugA.
NCO088366 RPA, data
9/28/2017

REASONABLE POTENTIAL ANALYSIS
PerOJ
PaAb
Par10
Use"PASTE SPECIAL
Use 'PASTE SPECIAL
Use"PASTESPECVIL
Beryllium
Vaxns' then'COPY'
Cadmium
Values' IAen"COPY'
Total
Values"Ih"COPY"
wxmwm ma
.Meet... testsChromium,
.M..Imenum a.0
polnh • as
polnn • ea
points • Se
Date
Data
BDL-112DL Results
Data
Data
BDL-1120L
Results
Date
Data BDL-112DL Results
1
10/31/2013
< 1
0.5 Std Dev.
0.0000
1
4/92015
< 1
0.5
Std Dev.
0.0000
1
4/9/2015
< 5
25 Sid Dev.
0.0000
2
2/42014
< 1
0.5 Mean
0.50DO
2
4/212016
< 1
0.5
Mean
0.5000
2
421/2016
< 5
2.5 Mean
2.5000
3
4/17/2016
< 1
0.5 C.V.
0.00DD
3
5/2/2016
< 1
0.5
C.V.
0.0000
3
5122016
< 5
25 C.V.
O.00DO
4
3/30/2017
< 1
0.5 n
5
4
6/15/2016
< 1
0.5
IT
8
4
8/15/2016
< 5
25 n
10
5
4/5/2017
< 1
0.5
5
7/712016
< 1
0.5
5
7172016
< 5
25
6
Mull Factor =
1.00
6
72612016
< 1
0.6
Mult Factor =
1.00
6
712612D16
< 5
25 Mult Factor =
1.00
7
Max. Value
0.50 ug/L
7
8/1/2016
< 1
0.5
Max. Value
0.500 ug/L
7
8/1/2016
< 5
2.5 Max. Value
2.5 pg/L
8
Max. Pred Cw
O DETECTS ug/L
8
9/6/2016
< 1
0.5
Met. Pred Cw
O DETECTS ug/L
6
9/6/2016
< 5
25 Max. Prod Cw
O DETECTS pg/L
9
9
9
3/30/2017
< 5
25
10
10
10
4/5/2017
< 5
25
11
11
11
12
12
12
13
13
13
14
14
14
15
15
15
16
16
16
17
17
17
18
18
18
19
19
19
2D
20
20
21
21
21
22
22
22
23
23
23
24
24
24
25
25
25
26
26
26
27
27
27
28
28
28
29
29
29
30
30
30
31
31
31
32
32
32
33
33
33
34
34
34
35
35
35
NCO088366 RPA, data
-2- 928/2017

1
2
3
4
5
6
7
8
9
tD
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
28
27
28
29
30
31
32
33
34
35
Us*"PASTE
SPECIAL -Valves"
Molybdenum
man "copy.
Maximum tlal.
Date
Data
BDL=112DL Result
4121/2016
< 10
5 Sid Dev,
0.0000
5/2/2016
< 10
5 Mean
5.0000
6/15/21316
< 10
5 C.V.
0.0000
7/26/2016
< 10
5 n
8
8/1/2016
< 10
5
9/612016
< 10
5 Mull Factor =
1.00
3/30/2017
< 10
5 Max. Value
5.0 ug/L
4/5/2017
< 10
5 Max Prod Cw
O DETECTS ug0.
REASONABLE POTENTIAL ANALYSIS
' 8 Par18
U..-pMTE
SPECIAL-Valuei
Nickel
than^COPY-.
Maximum data
Date
Data
BDL=1/2DL Results
'Imts=se
4/9/2015
< 10
5 Sid Dev.
0.0000
4/21/2016
< 10
5 Mean
5.0000
5/2/2016
< 10
5 C.V.
0.0000
6/15/2016
< 10
5 n
10
7n/2016
10
5
7/26/2016
< 10
5 Mult Factor=
1.00
8/1/2016
< 10
5 Max. Value
5.0 yg/L
9/6/2016
< 10
5 Max Pred Cw
O DETECTS Kit.
3/30/2017
< 10
5
4/5/2017
< 10
5
-4-
----
uae"PASTE SPECIAL
Selenium
V.iw."Men "CoPr
. Maximum data
polnn= BB
Date
Data
BDL=112DL Results
1
4/9/2015
< 10
5 Sid Dev.
0.0000
2
4/21/2016
< 10
5 Mean
5.0000
3
5/2/2016
< 10
5 C.V.
0.0000
4
6/15/2016
< 10
5 n
10
5
777/2016
< 10
5
6
7/26/2016
< 10
5 Mull Factor =
1.00
7
8/1/2016
< 10
5 Max. Value
5.0 uglL
8
9/6/2016
< 10
5 Max Pred Cw
40 DETECTS ug/L
9
3/30/2017
< 10
5
10
4/5/2017
< 10
5
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
NCO088366 RPA, data
9/28/2017

REASONABLE POTENTIAL ANALYSIS
Pall
Use "PASTE SPECU\L
Paf12
Use "PASTE SPECIAL
Pdr14
Uae-P45TE SPECIAL
Copper
Veluea" Ihcm "COPY'
Cyanide
VAuua" Ihen "OOPY'
Lead
Veluea" Ihen "COPY"
,Maximum daft
.M.A.. dam
,Maximum dam
point • 5a
point • 5a
poin%= 5e
Date
Data
BDL=1120L Results
Date
Data
BDL=112DLResul[s
Date
Data BDL=1/2DL Results
1
4/9/2015
< 10
5 Sid Dev.
5.5480
1
4/9/2015
< 5
5 Sld Dev.
0.0000
1
419/2015
<
5 2.5 Sid Dev.
0.0000
2
421/2016
3
3 Mean
4.8500
2
1131/2014
< 5
5 Mean
5.00
2
4/212016
<
5 25 Mean
2.5000
3
5/2/2016
20
20 C.V.
1.1439
3
10/212013
< 5
5 C.V.
0.0000
3
5/22016
<
5 25 C.V.
0.0000
4
6/15/2016
4
4 n
10
4
n
3
4
6115/2016
<
5 25 n
10
5
V7/2016
< 1
0.5
5
5
717/2016
<
5 2.5
6
7/262016
4
4 Mult Factor =
2A9
6
Mult Factor=
1.00
6
7/26/2016
<
5 25 Mult Factor=
1.00
7
8/1/2016
5
5 Max. Value
20.00 U9IL
7
Mac Value
5.0 ug/L
7
6/12016
<
5 25 Max. Value
2.500 U91L
8
9/6/2016
4
4 Max. Pred Cw
49.80 ug/L
8
Max. Fred Cw
O DETECTS ug/L
6
916/2016
<
5 2.5 Max. Pred Cw
O DETECTS ug/L
9
3/30/2017
1
1
9
9
3/30/2017
<
5 2.5
10
415/2017
2
2
10
10
4/5/2017
<
5 25
11
11
11
12
12
12
13
13
13
14
14
14
15
15
15
16
16
16
17
17
17
16
18
18
19
19
19
20
20
20
21
21
21
22
22
22
23
23
23
24
24
24
25
25
25
26
26
26
27
27
27
28
28
28
29
29
29
30
30
30
31
31
31
32
32
32
33
33
33
34
34
34
35
35
35
NCO088366 RPA, data
-3- 928/2017

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
Silver VaN =.,COPY'
NW mum aau
"o -ss
Date
Data BDL=112DL Results
4/9/2015
< 5 2.5 Std Dev.
0.0000
1/31/2014
< 5 2.5 Mean
2.5000
10/21/2013
< 5 2.5 C.V.
0.0000
n
3
Mull Fagot = 1.00
Max. Value 2.500 ug/L
Max. Pred Cw 0 DETECTS ug/L
REASONABLE POTENTIAL ANALYSIS
Par21
Usa RASM SMCIA
Zinc
Veluu'eun'COPY
Mar &%
"Im-ss
Date
Data
BDL=112DL
Results
1
4/92015
84
84
Sld Dev.
16.8750
2
4/21/2016
91
91
Mean
94,1000
3
5/2/5016
138
138
C.V.
0.1793
4
6/15/2016
84
84
n
10
5
7/7/2016
93
93
6
7/26/2016
86
86
Mu0 Fador =
1.19
7
8/1/2016
76
76
Max. Value
138.0 ug/L
8
9/6/2016
96
96
Max. Pred Cw
164.2 ug/L
9
3/30/2017
94
94
10
4/5/2017
99
99
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
5.
NC0088366 RPA, data
9/28/2017

NH3/TRC WLA Calculations
Facility: S. Harnett Regional W WTP
PermitNo. NCO088366
Prepared By: Bing Bai
Enter Design Flow (MGD): 15
Enter s7Q10 (cfs): 44.4
Enter w7010 cfs : 91.8
Total Residual Chlorine (TRC)
Ammonia (Summer)
Daily Maximum Limit (ug/1)
Monthly Average Limit (mg NH3-N/1)
s7Q10 (CFS) 44.4
s7Q10 (CFS)
44.4
DESIGN FLOW (MGD) 15
DESIGN FLOW (MGD)
15
DESIGN FLOW (CFS) 23.25
DESIGN FLOW (CFS)
23.25
STREAM STD (UG/L) 17.0
STREAM STD (MG/L)
1.0
Upstream Bkgd (ug/1) 0
Upstream Bkgd (mg/1)
0.22
IWC (%) 34.37
IWC (%)
34.37
Allowable Conc. (ug/1) 49
Allowable Conc. (mg/1)
2.5
Ammonia (Winter)
Monthly Average Limit (mg NH3-N/1)
Fecal Coliform
w7Q10 (CFS)
91.8
Monthly Average Limit: 200/100ml
DESIGN FLOW (MGD)
15
(If DF >331; Monitor)
DESIGN FLOW (CFS)
23.25
(If DF<331; Limit)
STREAM STD (MG/L)
1.8
Dilution Factor (DF) 2.91
Upstream Bkgd (mg/1)
0.22
IWC (%)
20.21
Allowable Conc. (mg/1)
8.0
Total Residual Chlorine
1. Cap Daily Max limit at 28 ug/I to protect for acute toxicity
Ammonia (asp
1. If Allowable Conc > 35 mg/l, Monitor Only
2. Monthly Avg limit x 3 = Weekly Avg limit (Municipals)
3. Monthly Avg limit x 5 = Daily Max limit (Non-Munis)
If the allowable ammonia concentration is > 35 mg/L, no limit shall be imposed
Fecal Coliform
1. Monthly Avg limit x 2 = 400/100 ml = Weekly Avg limit (Municipals) = Daily Max limit (Non -Muni)

5/15/17
WQS =
12
ng/L
MERCURY WQBEL/TBEL EVALUATION V:2013-6
Facility Name
S. Harnett Regional WWTP
No Limit Required
/Permit No.
No MMP Required
Total Mercury 1631E PQL = 0.5
ng/L
7Q10s = 44.400 cfs WQBEL = 34.92 ng/L
Date
Modifier
Data Entry
Value
Permitted Flow = 15.000 47 ng/L
4/9/15
<
1
0.5
0.5 ng/L - Annual Average for 2015
1/31/14
<
1
0.5
0.5 ng/L - Annual Average for 2014
8/29/12
<
1
0.5
0.5 ng/L - Annual Average for 2012
10/21/13
<
1
0.5
0.5 ng/L - Annual Average for 2013
4/21/16
<
1
0.5
5/2/16
0.1
0.5
6/15/16
0.1
0.5
7/29/16
<
1
0.5
8/1/16
0.1
0.5
9/6/16
0.1
0.5
0.5 ng/L- Annual Average for 2016

Influent I Used in
mg/L Calculation
red-1/
1)Date
emered only in
ILJ.O
1 ILJ.n
G.V
Jan-17
110.7
110.7
<
2.0
Heavy
Bordered cells.
Rest of
vmdcsheet is
pmteaed'
passxoN is
.Z..
2) For �Oe'
detection data,
enter ^<^in^<^
rnlumn,ane
solar tlelecgonMay-16 level In Inaua
or Elauent
mga columns.
Spreadsne'dMar-16 vill auto-
meauenv71.4
Dec-16
133.1
133.1
<1
2.0
Nov-16
123.8
123.8
<1
2.0
Oct-16
94.6
94.6
<V2.0
Se -16
98.1
98.1
Au -16
85.6
85.6
<
Jul-16
86.8
86.8
Jun-16
112.6
112.6
ee
108.2
108.2
A r-16
94.9
94.9
92.3
92.3
Feb-16
7I.4
<0.
calculate
averages and
removal rates
using V2
value entered.
3)Dominant
removal Rate
tl101Ce
Jan-16
91.0
91.0
<
2.0
Dec-15
81.1
81.1
<
2.0
Nov-15
881
88.1
<
2.0
Oct -IS
99.9
99.9
<
2.0
Column Averages =>
I03.1542
4) Formulas in
Un aired Site Specific RR
P P
Compro-
NC0088366
pensive Guitle
HWA Chepfer,
Literature/Default RR
So. Harnett W WTP
section E,
Page i.
33 % of data is BDL
5/9/2017
Removal -rate Calculation
Removal Rates
Page 1 of 1 pages
5131/2017, 2:01 PM
Revision: August 1999
Removal Rate Calculations
Used in
Calculation
1.0
2.0
3.0
1.6
0.9
LO
1.0
1.22
Influent
< mg/L
Used in
Calculation <
Effluent
mg/L
Used in
Calculation
186.4
186.4
<
2.5
1.25
135.5
135.5
<
2.5
1.25
133.6
133.6
<
2.5
L25
165.9
165.9
<
2.50
1.25
166A
166.4
<
1.50
0.75
140.4
140.4
1.50
1.5
103.3
103.3
<
1.50
0.75
113.2
113.2
<
2.50
1.25
91.0
91.0
<
2.50
1.25
116.4
116.4
<
1.50
0.75
157.8
157.8
<
1.50
0.75
143.5
143.5
<
1,50
0.75
134.7
134.7
<
1.50
75
0flI2
120.9
120.9
<
1.50
123.4
123.4
<
1.00
140.7
140.7
<
2.50
136.2
136.2
<
1.50
121.0
121.0
<
2.50
135.01
Unpaved Site Specific RR =>
Literamre/Default RR =>
1.00
99.26
85.00
47 % of data is BDL
of data is BDL

NPDES/A uifer Protection Permitting Unit Pretreatment Information Request Form
PERMIT WRITER COMPLETES THIS PART:
Check all that apply
PERMIT WRITERS - AFTER you got this form back
from � PERCS if LTMP/STMP data we said should be
on DMRs is not really there, so we can get it for you
(or NOV POTW).
- Notify PERCS If you want us to keep a specific POC
In LIMP/STMP so you will have data for next permit
renewal.
- Email PERCS draft permit, fact sheet, RPA.
- Send PERCS paper copy of permit (w/o NPDES
bollerplate), cover fetter, final fact sheet Email RPA If
Date of Re uest
5/5/2017
municipal renewal
x
Re uestor
Bing Bai
new Industries
Facility Name
south Hameft regional wWTP
WWTP expansion
Permit Number
NCO088366
S tive limits
Re ion
Fayetteville
stream reclass.
Basin
Cape Fear
outfall relocation,
7Q10 than a
It applicable PERCS staff: Other Comments to PERCS:
BRO CPF CTB FRB TAR - Sarah Bass 807-6310
Facility Is rated 16.0 MGD with no SiUs in its application, but it
CHO HIW LTN LUM NES NEW ROA YAD Is listed In POTW with pretreatment spreadsheet showing
- Monit Hassan (807-6314) potential SIU but no metals sampling yet.
PERCS PRETREATMENT STAFF COMPLETES THIS PART:
Status of Pretreatment Program (check all that apply)
1) facility has no SIU's, does have Division approved Pretreatment Program that is INACTIVE
facility has no SIU's, does not have Division approved Pretreatment Program
3) facility has SIUs and DWQ approved Pretreatment Program (list "DEV" if program still under development)
3a) Full Program with LTMP
• 3b) Modified Program with STMP
4) additional conditions regarding Pretreatment attached or listed below
Flow, MGD
Industrial
Uncontrollable
Permitted
Actual
Time period for Actual
STMP time frame:
Q = Quarterly
M = Monthly
Most recent:
n/a
Next C ce:
a
C
c a
a
Parameter of
Concern (POc)
Check Ust
PO due to
t4PDES/Non-
Mach Permit
Umlt
Required by
EPA'
Required
by 603
Sludge"
t dine
o
tSN"
POTW PCC
(Explain
below)""
STMP
Effluent
Freq
LTMP
Effluent
Freq
BOD
4
Q M
TSS
ve
4
Q M
NH3
✓
4
Q M
Arsenic
4
Q M
Cadmium ; ; ; ::::
f
4
Q M
Chromium
4
Q M
Co ....er
4
V
4
Q M
Cyanide
4
Q M
is all date on DMRs?
Lead ::::. ,
J
4
Q M
YES
Mf2�_
ercu
J
4
Q M
NO attach data
Molybdenum
4
Q M
Nickel .':
✓
4
Q M
Silver
4
Q M
Selenium
✓
4
Q M
Zinc `:; .
4
Q M
Is data in spreadsheet
Total Nitroaan
4
Q M
YES email to writer
Phosphorus
4
Q M
NO
4 Q M
4 Q M
4 Q M
4 Q M
0 snmletA Innti sann nr Y%rnnnrtn /.fs Dnr'Q y.. r.,.�.,e..,►,,.s�
'Always In the LTMP/STMP
Only In LTMP/STMP
Only In LTMP/STMP while SIU sttl discharges to POTW '*'• Only In LTMP/STMP when pollutant is still of concern to POTW
PERO NPDES—Pmfta ntrequesLform.mey201exbx /)
Revised: Ady 24.2007
Z.01(0 _d
n' - UaAJI"-b j�-� Oltam,
Z'

Date: 9/28/2017
FACILITY: S. Harnett Regional WWTP Outfall 001
NPDES PERMIT: NCO088366 Dissolved to Total Metal Calculator
In accordance with Federal Regulations, permit limitations must be written as Total Metals per 40 CFR 122.45(c)
Receiving
Receiving
[=: Str
IF
Upstream Hard Avg (mg/L) = 25
EFF Hard Avg (mg/L) = 113.3086
PARAMETER
Dissolved
Metals
U EPA
Translators -using
Default Partition
Coefficients
streams
aomum AloaaNe filuenl Concentrator
(MAEC) es a Total Metal
=Dissolved Mehl<Tranuabr
COMMENTS (Identify parameters to PERCSBmnch to maintain in fadlitys LTMP/STMP):
Chronic
Acute
Chrome
Acute
u
u 0
u
Cadmium (d)
_ 0.27
1.74
1.08
0.252
0.252
0.202
_ 1.08
_ 1.08
225.73
6.89
Cd -Trout stream
Chromium III d)(h)
Chromium VI (d)
Chromium, Total t
Co r d h
0.27
4.29
46
372
1838.46
11
18
1.000
11.00
16.00
WA
WA
5.4
8.2
36
0.348
0.1
_ _15.54
7.15
23.66
Lead d h
1.31
198.28
Nickel d h
32
301
0.432
72.93� 696.99
Nf - INS streams (t)
Silver d)(h,acute) _
Zinc d h
_
_ _ 25 N/A
0.061 _ _ 1.31
248.52 261.67
0.06
1.31
1.000
0.288
72
75
Be Ilium
6.5
65
1.000
6.5
65
Arsenic d
150
340
1.000
150
340
(d) = dissolved metal standard. See ISA NCAC 02B.0211 for more information.
(h) = hardness -dependent dissolved metal standard. See 15A NCAC 02B .0211 for more information.
(t) = based upon measurement of total recoveable metal. See iSA NCAC 02B.0211 for mare Information.
The Human Health standard for Nickel in Water Supply Streams is 25 mg/L which is Total Recoverable metal standard.
The Human Health standard for Arsenic is 30 pg/L which Is Total Recoverable metal standard.
eam
NPDES
Total Suspentletl
Combined
Combined
Insaeam
Instream
Stream
Stream
$dills
Hardness
Haldne$$
Wastewater
Eifiuenl
Wastewater Upstream Hardness
summer
summer 70t0
070
Flow Limit
-Fixed Value-
chronic
Awls
Concentration
Concentration Hardness
Average
7010 (CFS)
(MGD)
GD
GD
(mgA)
(mglL)
(mg/L)
(Chronic)
vera
Image
(Acute) �mli2) (mg/L)
44.4000
28.6452
23.5161
15.0000
10
55.350
59.392
34.3681
38.9447 25 113.3086

Data Summary for Reduced NPDES Permit Monitoring Frequency
Data Results and Approval Criteria for Cross Creek WRF (NC0023957)
Data Set - May 1, 2014 - April 30, 2017
Monthly Weekly # of 3-Year
results
Parameters Limits Limits Samples Averaee
50% of # of Results > 200% # of Results > 200%
Monthly monthly average Weekly average
Limit (CBOD. TSS. NH3) (fecal coliform)
Max Daily
Result
CBOD
Summer 5
7.5
296
2.24
2.5
0
0
6
Winter 10
15
207
2.08
5
0
0
3.9
NH3-N
Summer 1
3
296
0.39
0.5
5
N/A
5.12
Winter 2
6
207
0.54
1
1
N/A
4.02
T55 30 1 45 1 503 1 2.33 1 15 1 0 N/A 2.5
Fecal Coliform 1 200 1 400 1 503 1 1.13 1 100 1 N/A 1 0 240
Approval Criteria Met:
1) This facility has not received a civil penalty for a permit violation of the target parameters in the last three years
2) Neither the permittee nor any of its employees have been convicted of criminal violation of the CWA with the previous five years.
3) This facility is not under an SOC for target parameter effluent limit noncomplaince
4) This facility is not on EPA's Quarterly Noncompliance Report for target parameter limit violations
5) Three year arithmetic mean is less tnah fifty percent of the monthly average permit limit for CBOD, TSS, and NH3-N
6) Three year geomean is less than fifty percent of the monthly average permit limit for fecal coliform
7) Less than 15 daily sampling results over the three year review period are in excess of 200% of the monthly average for CBOD, TSS, and NH3-N
8)Less than 20 daily sampling results over the three year review period are in excess of the 200% of the weekly average for fecal coliform
9) This facility has not received any non -monthly average limit violations in the past year for the four target parameters.

NORTH CAROLINA AFFIDAVIT OF PUBLICATION
Cumberland County
eserore the undersigned, a Notary Public of said County and state, duly
commissioned and authorized to administer oaths, affirmations, etc.,
personally appeared. CINDY O. MCNAIR
Who, being duly sworn or affirmed, according to law, doth depose and say
that he/she is a LEGAL SECRETARY of DS North Carolina Holdings, Inc., a
corporation organized and doing business under the Laws of the State of
Delaware, and publishing a newspaper known as the FAYETTEVILLE
OBSERVER, in the City of Fayetteville, County and State aforesaid, and
that as such he/she makes this affidavit; that he/she is familiar with the
books, files and business of said Corporation and by reference to the files
of said publication the attached advertisement of CL Legal Line
INTENT TO ISSUE A NPDES WASTEWATER PERMIT
of NC DIVISION OF WATER QUALITY
was inserted in the aforesaid newspaper in space, and on dates as follows:
10/12/2017
and at the time of such publication The Fayetteville Observer was a
newspaper meeting all the requirements and qualifications prescribed by
Sec. No. 1-597 G.S. of N.C.
The above is correctly copied from the books and files of the aforesaid
corporation and publication.
CL,,& D. frkata,�,
Title
County, North Carolina
Sworn or affirmed to, and subscribed before me, this 19 day
of October, A.D., 2017.
In Testimony Whereof, I have hereunto set my hand and affixed my
ial seal, the day and year aforesaid.
H. Walters, Notary Public
commission expires 5th day of December, 2020.
TO: NC DIVISION OF WATER QUALITY
1617 MAIL SERVICE CENTER
RALEIGH, NC 27699-00001617
0004968018

IV rocs co P%
®Harnett
COUNT Y
NORTH CAROLINA
December 08, 2015
NCDENR,
NPDES Permitting Unit
1617 Mail Service Center
512 North Salisbury Street
Raleigh, NC 27699-1617
Subject: Permit Renewal
South Harnett Regional W WTP
NPDES # NCO088366
Dear Sir or Madam:
A _ 9 (itality wAR Public Utilities Department
AW WA nTap! e
u.F.PEP
www.harnett.org
RECENEDIDENRIDWR
DEC 092015
Water Q laftlon
Permitting
Please find the enclosed permit renewal application and associated documents for the above referenced
facility. The packet includes the following:
1. Basic permit application packet (Part A & B)
2. Part C (Certification)
3. Part D (Expanded Effluent Testing)
4. Sludge Management Plan
If you require any additional information, please do not hesitate to contact me directly.
Respectfully,,
Kenn ethW Fail
Wastewater Manager
kfail .harnett.org
910-814-6470
PO Box If19
308 West Duncan Street
Lillington, NC 27546-1119
ph: 910-893-7575
fax: [phone]
strong roots • new growth

F!'ZIUTY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: I RIVER BASIN:
South Harnett Regional WWTP, NCO088366 Renewal
FORM
2A NPDES FORM 2A APPLICATION OVERVIEW
NPDES
APPLICATION OVERVIEW
Cape Fear 03-06-14
Form 2A has been developed in a modular format and consists of a "Basic Application Information" packet
and a "Supplemental Application Information" packet. The Basic Application Information packet is divided
into two parts. All applicants must complete Parts A and C. Applicants with a design flow greater than or
equal to 0.1 mgd must also complete Part B. Some applicants must also complete the Supplemental
Application Information packet. The following items explain which parts of Form 2A you must complete.
BASIC APPLICATION INFORMATION:
A. Basic Application Information for all Applicants. All applicants must complete questions A.1 through A.S. A treatment works
that discharges effluent to surface waters of the United States must also answer questions A.9 through A.12.
B. Additional Application Information for Applicants with a Design Flow 2 0.1 mgd. All treatment works that have design flows
greater than or equal to 0.1 million gallons per day must complete questions B.1 through BA
C. Certification. All applicants must complete Part C (Certification).
SUPPLEMENTAL APPLICATION INFORMATION:
D. Expanded Effluent Testing Data. A treatment works that discharges effluent to surface waters of the United States and meets
one or more of the following criteria must complete Part D (Expanded Effluent Testing Data):
1. Has a design flow rate greater than or equal to 1 mgd,
2. Is required to have a pretreatment program (or has one in place), or
3. Is otherwise required by the permitting authority to provide the information.
E. Toxicity Testing Data. A treatment works that meets one or more of the following criteria must complete Part E (Toxicity Testing
Data):
1. Has a design flow rate greater than or equal to 1 mgd,
2. Is required to have a pretreatment program (or has one in place), or
3. Is otherwise required by the permitting authority to submit results of toxicity testing.
F. Industrial User Discharges and RCRAICERCLA Wastes. A treatment works that accepts process wastewater from any
significant industrial users (SIUs) or receives RCRA or CERCLA wastes must complete Part F (Industrial User Discharges
and RCRAICERCLA Wastes). SIUs are defined as:
1. All industrial users subject to Categorical Pretreatment Standards under 40 Code of Federal Regulations (CFR) 403.6 and
40 CFR Chapter I, Subchapter N (see instructions); and
2. Any other industrial user that:
a. Discharges an average of 25,000 gallons per day or more of process wastewater to the treatment works (with certain
exclusions); or
b. Contributes a process wastestream that makes up 5 percent or more of the average dry weather hydraulic or organic
capacity of the treatment plant; or
C. Is designated as an SIU by the control authority.
G. Combined Sewer Systems. A treatment works that has.a combined sewer system must complete Part G (Combined Sewer
Systems).
ALL APPLICANTS MUST COMPLETE PART C (CERTIFICATION)
EPA Form 3510-2A (Rev. 1-99). Replaces EPA ions 7550-6 & 7550-22. Page 1 of 22

FACILITY NAME AND PERMIT NUMBER:
PERMIT ACTION REQUESTED:
RIVER BASIN:
South Harnett Regional WWTP, NCO088366
Renewal
Cape Fear 03-06-14
BASIC APPLICATION INFORMATION
PART A. BASIC APPLICATION INFORMATION FOR ALL APPLICANTS:
All treatment works must complete questions A.1 through A.8 of this Basic Application Information Packet
A.I. Facility Information.
Facility Name South Harnett Regional W WTP
Mailing Address 3324 Shady Grove Road
Spring Lake. NC 28390
Contact Person Kenneth Fail
Title Wastewater Manager
Telephone Number [phone]
Facility Address 3324 Shady Grove Road
(not P.O. Box) Spring Lake NC 28390
A.2. Applicant Information. If the applicant is different from the above, provide the following:
Applicant Name Harnett County Department of Public Utilities
Mailing Address PO Box 1119 (mailing) 700 McKinney Pwv (physical)
Lillington NC 27546
Contact Person Steve Ward
Title Director
Telephone Number [phone]
Is the applicant the owner or operator (or both) of the treatment works?
® owner ® operator
Indicate whether correspondence regarding this permit should be directed to the facility or the applicant.
❑ facility ® applicant
A.3. Existing Environmental Permits. Provide the permit number of any existing environmental permits that have been issued to the treatment works
(Include state -issued permits).
NPDES NC-0088366 PSD
UIC Other
RCRA Other
A.4. Collection System Information. Provide information on municipalities and areas served by the facility. Provide the name and population of each
entity and, if known, provide Information on the type of collection system (combined vs. separate) and its ownership (municipal, private, etc.).
Name Population Served Type of Collection System Ownership
South Central District (Phase 1) 14,000 separate county
Carolina Lakes/Hwv87 Corridor 5,000 separate county
Fort Bragg/Pope AFS/NTA 81,000 separate federal (military base)
Total population served 100,000
EPA Form 3510-2A (Rev. 1-99), Replaces EPA fortes 7550-6 8 7550-22. Page 2 of 22

FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN:
South Harnett Regional WWTP, NCOO88366 I Renewal I Cape Fear 03-06-14
A.S. Indian Country.
a. Is the treatment works located in Indian Country?
❑ Yes ® No
b. Does the treatment works discharge to a receiving water that is either in Indian Country or that is upstream from (and eventually flows
through) Indian Country?
❑ Yes ® No
A.6. Flow. Indicate the design flow rate of the treatment plant (i.e., the wastewater flow rate that the plant was built to handle). Also provide the
average daily flow rate and maximum daily flow rate for each of the last three years. Each year's data must be based on a 12-month time period
with the 12t' month of "this year" occurring no more than three months prior to this application submittal.
a. Design flow rate 15.0 mgd
Two Years Ago Last Year This Year (2015)
b. Annual average daily flow rate 5.958 mad 5.215 mad 5.329 mad
C. Maximum daily flow rate 12.341 mad 8.361 mad 8.522 mad
A.7. Collection System. Indicate the type(s) of collection system(s) used by the treatment plant. Check all that apply. Also estimate the percent
contribution (by miles) of each.
® Separate sanitary sewer 100 %
❑ Combined storm and sanitary sewer NIA %
A.B. Discharges and Other Disposal Methods.
a. Does the treatment works discharge effluent to waters of the U.S.? ® Yes ❑ No
If yes, list how many of each of the following types of discharge points the treatment works uses:
I. Discharges of treated effluent one (001)
ii. Discharges of untreated or partially treated effluent NIA
iii. Combined sewer overflow points NIA
iv. Constructed emergency overflows (prior to the headworks) NIA
V. Other NIA NIA
b. Does the treatment works discharge effluent to basins, ponds, or other surface impoundments
that do not have outlets for discharge to waters of the U.S.? ❑ Yes ® No
If yes, provide the following for each surface impoundment:
Location: NIA
Annual average daily volume discharge to surface impoundment(s) NIA mgd
Is discharge ❑ continuous or ❑ intermittent?
C. Does the treatment works land -apply treated wastewater? ❑ Yes ® No
If yes, provide the following for each land application site:
Location: NIA
Number of acres: NIA
Annual average daily volume applied to site: NIA mgd
Is land application ❑ continuous or ❑ intermittent?
d. Does the treatment works discharge or transport treated or untreated wastewater to another
treatment works? ❑ Yes ® No
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22. Page 3 of 22

Q
FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN:
South Harnett Regional WWTP, NCO088366 Renewal Cape Fear 03-06-14
If yes, describe the mean(s) by which the wastewater from the treatment works is discharged or transported to the other treatment works
(e.g., tank truck, pipe).
NIA
If transport is by a party other than the applicant, provide:
Transporter Name NIA
Mailing Address NIA
NIA
Contact Person
NIA
Title
NIA
Telephone Number
(NIA)
For each treatment works that receives this discharge, provide the following:
Name
NIA
Mailing Address
NIA
NIA
Contact Person NIA
Title NIA
Telephone Number (NIA)
If known, provide the NPDES permit number of the treatment works that receives this discharge NIA
Provide the average daily flow rate from the treatment works into the receiving facility. NIA mgd
e. Does the treatment works discharge or dispose of its wastewater in a manner not included
in A.8. through A.8.d above (e.g., underground percolation, well injection): ❑ Yes ❑ No
If yes, provide the following for each disposal method:
Description of method (including location and size of site(s) if applicable):
NIA
Annual daily volume disposed by this method: NIA
Is disposal through this method ❑ continuous or ❑ intermittent?
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
Page 4 of 22

0
FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN:
South Harnett Regional WWTP, NCO088366 I Renewal I Cape Fear 03-06-14
WASTEWATER DISCHARGES:
If you answered "Yes" to -question A.8.acomplete questions A.9 through A.12 once for each outfall (including bypass points) through
which effluent Is discharged. Do not Include Information on combined sewer overflows In this section. If you answered "No" to question
A.8.a, go to Part B, "Additional Application Information for Applicants with a Design Flow Greater than or Equal to 0.1 mgd."
A.9. Description of Outfall.
a. Outfall number 001
b. Location near Spring Lake: approx. 2.000 feet upstream of Elliott Bridge Road crossing
of LLR 28302
(City or town, if applicable)
(Zip Code)
Harnett (not in Spring Lake town limits)
NC
(County)
(State)
35° 13' 49" N
780 53' 00" W
(Latitude)
(Longitude)
C. Distance from shore (if applicable) NIA
ft.
d. Depth below surface (if applicable) NIA
ft.
e. Average daily flow rate 5.329
mgd
f. Does this outfall have either an intermittent or a periodic discharge? ❑ Yes
® No (go to A.9.g.)
If yes, provide the following information:
Number f times per year discharge occurs:
Average duration of each discharge:
Average flow per discharge:
Months in which discharge occurs:
g. Is outfall equipped with a diffuser?
A.10. Description of Receiving Waters.
NIA
NIA
NIA
mgd
NIA
❑ Yes ® No
a. Name of receiving water Lower Little River (LLR)
b. Name of watershed (if known) Cape Fear River Sub -Basin 03-06-14
United States Soil Conservation Service 14-digit watershed code (if known): 03030004090010
C. Name of State Management/River Basin (If known): Cape Fear River Sub -Basin 03-06-14
United States Geological Survey 8-digit hydrologic cataloging unit code (if known): 03030004
d. Critical low flow of receiving stream (if applicable)
acute cfs chronic cfs
e. Total hardness of receiving stream at critical low flow (if applicable): mgll of CaCO3
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22.
Page 5 of 22

FACILITY NAME AND PERMIT NUMBER:
PERMIT ACTION REQUESTED:
RIVER BASIN:
South Harnett Regional WWTP, NCO088366
Renewal
Cape Fear 03-06-14
A.11. Description of Treatment
a. What level of treatment are provided? Check all that apply.
® Primary ® Secondary
® Advanced ® Other. Describe: Tertiary — Traveling Bridge Filters
b. Indicate the following removal rates (as applicable):
Design BOD5 removal or Design CBOD5 removal 97 %
Design SS removal 97 %
Design P removal 85 %
Design N removal 85 %
Other %
C. What type of disinfection is used for the effluent from this outfaii? If disinfection varies by season, please describe:
UV
If disinfection is by chlorination is dechlorination used for this outfall? ❑ Yes ❑ No
Does the treatment plant have post aeration? ® Yes ❑ No
A.12. Effluent Testing Information. All Applicants that discharge to waters of the US must provide effluent testing data for the following
parameters. Provide the Indicated effluent testing required by the permitting authority for each outfall through which effluent is
discharned. Do not include Information on combined sewer overflows In this section. All Information reported must be based on data
collected through analysis conducted using 40 CFR Part 136 methods. In addition, this data must comply with QA/QC requirements of
40 CFR Part 136 and other appropriate QA/QC requirements for standard methods for analyses not addressed by 40 CFR Part 136. At a
minimum, effluent testing data must be based on at least three samples and must be no more than four and one-half years apart.
Outfali number. 001
MAXIMUM -DAILY VALUE
AVERAGE DAILYVALUE
-_
PARAMETER,
slue.
Units
Value
_
Units
Number -of Samples
pH (Minimum)
6.00
S.U.
pH (Maximum)
7.33
s.U.
Flow Rate
12.34
mgd
4.01
m d
1553
Temperature (Winter)
22.3
°C
15
°C
660
Temperature (Summer)
28.6
°C
23.5
°C
359
' For eH please report a minimum and a maximum daily value
:.
MAXIMUM'DAILY
DISCHARGE
AVERAGE DAILY DISCHARGE
POLLUTANT
ANALYTICAL
METHOD
MLIMDL'
Conc,
.
Units
Conc.
Units,
Number of
Samples
CONVENTIONAL AND NON CONVENTIONAL COMPOUNDS
BIOCHEMICAL OXYGEN
BOD5
11.00
mg/L
0.63
mg/L
1105
SM 5210 B
<2.0
CBOD5
DEMAND (Report one)
FECAL COLIFORM
2200
g/100ml-
0.90
g/100ml-
1129
SM 9222 D
<1
TOTAL SUSPENDED SOLIDS (TSS)
28
mg/L
0.2
mg/L
1129
SM 540 D
<1
ENDF PARTA.:
PAGE 1) TO DETERWHICH OTHER PARTS
REFER TO THE APPLICATION,.OVERVII - (_
O.E FORM 2A YOU �IIIUST COMPLETE_ _
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22. Page 6 of 22

FACILITY NAME AND PERMIT NUMBER:
PERMIT ACTION REQUESTED:
RIVER BASIN:
South Harnett Regional WWTP, NCO088366
Renewal
Cape Fear 03-06-14
BASIC APPLICATION INFORMATION
PART B. ADDITIONAL APPLICATION INFORMATION FOR APPLICANTS WITH A DESIGN FLOW GREATER THAN OR
EQUAL TO 0.1 MGD (100,000 gallons per day).
All applicants with a design flow rate 2 0.1 mgd must answer questions 8.1 through B.6. All others go to Part C (Certification).
B.I. Inflow and Infiltration. Estimate the average number of gallons per day that flow into the treatment works from inflow and/or infiltration.
50.000+ qpd Cc@ Design Q gpd
Briefly explain any steps underway or planned to minimize inflow and infiltration.
South Central collection system is aporox. 75% newly installed pipe: Carolina Lakes. Hwy-87 corridor are in good condition
relative to Al. Harnett County has implemented aggressive I&I reduction campaigns in each of these areas and continues
to reduce I&I tributary to their respective treatment facilities.
The primary outfall and transmission from Fort Bragg WWTP to South Harnett Regional WWTP is new construction; I&I
should be minimal.
Fort Bragg collection systems are properly maintained and Compliant with their respective current NPDES permits
B.2. Topographic Map. Attach to this application a topographic map of the area extending at least one mile beyond facility property boundaries. This
map must show the outline of the facility and the following information. (You may submit more than one map if one map does not show the entire
area.) (see EAA Appendix B for all project maps related to South Harnett WWTP)
a. The area surrounding the treatment plant, including all unit processes.
b. The major pipes or other structures through which wastewater enters the treatment works and the pipes or other structures through which
treated wastewater is discharged from the treatment plant. Include outfalls from bypass piping, if applicable.
c. Each well where wastewater from the treatment plant is injected underground.
d. Wells, springs, other surface water bodies, and drinking water wells that are: 1) within Y. mile of the property boundaries of the treatment
works, and 2) listed in public record or otherwise known to the applicant.
e. Any areas where the sewage sludge produced by the treatment works is stored, treated, or disposed.
I. If the treatment works receives waste that is classed as hazardous under the Resource Conservation and Recovery Act (RCRA) by truck, rail,
or special pipe, show on the map where the hazardous waste enters the treatment works and where it is treated, stored, and/or disposed.
B.3. Process Flow Diagram or Schematic. Provide a diagram showing the processes of the treatment plant, including all bypass piping and all
backup power sources or redundancy in the system. Also provide a water balance showing all treatment units, including disinfection (e.g.,
chlorination and dechlorination). The water balance must show daily average flow rates at Influent and discharge points and approximate daily flow
rates between treatment units. Include a brief narrative description of the diagram. (see EAA Appendix B for all Protect maps related to South
Harnett WWTP)
B.4. Operation/Maintenance Performed by Contractor(s).
Are any operational or maintenance aspects (related to wastewater treatment and effluent quality) of the treatment works the responsibility of a
contractor? ❑ Yes E No
If yes, list the name, address, telephone number, and status of each contractor and describe the contractor's responsibilities (attach additional
pages if necessary).
Name: NIA
Mailing Address: N/A
N/A
Telephone Number: (NIA)
Responsibilities of Contractor. N/A
B.S. Scheduled Improvements and Schedules of Implementation. Provide information on any uncompleted implementation schedule or
uncompleted plans for improvements that will affect the wastewater treatment, effluent quality, or design capacity of the treatment works. If the
treatment works has several different implementation schedules or is planning several improvements, submit separate responses to question B.5
for each. (If none, go to question B.6.)
a. List the outfall number (assigned in question A.9) for each outfall that is covered by this implementation schedule.
N/A
b. Indicate whether the planned Improvements or implementation schedule are required by local, State, or Federal agencies.
❑ Yes ❑ No
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22. Page 7 of 22

FACILITY NAME AND PERMIT NUMBER:
PERMIT ACTION REQUESTED:
RIVER BASIN:
South Harnett Regional WWTP, NCO088366
Renewal
Cape Fear 03-06-14
C. If the answer to B.5.b Is Wes," briefly describe, including new maximum daily inflow rate (if applicable).
N/A
d. Provide dates imposed by any compliance schedule or any actual dates of completion for the implementation steps listed below, as
applicable. For improvements planned independently of local, State, or Federal agencies, indicate planned or actual completion dates, as
applicable. Indicate dales as accurately as possible.
Schedule Actual Completion
Implementation Stage MMIDD/YYYY MM/DD/YYYY
- Begin Construction
- End Construction
- Begin Discharge
- Attain Operational Level
e. Have appropriate pennitslclearances concerning other Federal/Stale requirements been obtained? ❑ Yes ® No
Describe briefly:
B.6. EFFLUENT TESTING DATA (GREATER THAN 0.1 MGD ONLY).
Applicants that discharge to waters of the US must provide effluent testing data for the following parameters. Provide the indicated
effluent testing required by the permitting authority for each ouffall through which effluent is discharged. Do not Include information
on combine sewer overflows in this section. All information reported must be based on data collected through analysis conducted
using 40 CFR Part 136 methods. In addition, this data must comply with QAIQC requirements of 40 CFR Part 136 and other appropriate
QAIQC requirements for standard methods for analyses not addressed by 40 CFR Part 136. At a minimum effluent testing data must be
based on at least three pollutant scans and must be no more than four and on -half years old.
Outfall Number: 001
MAXIMUM DAILY
AVERAGE DAILY DISCHARGE
POLLUTANT
DISCHARGE
ANALYTICAL
MLIMDL
Number of
METHOD
Conc.
Units
Conc.
Units
Samples
CONVENTIONAL AND NON CONVENTIONAL COMPOUNDS
AMMONIA (as N)
10.1
m /L
0.14
m /L
1132
SM 4500
<1.0
CHLORINE (TOTAL
N/A (UV)
NIA (UV)
NIA (UV)
NIA (UV)
N/A (UV)
NIA (UV)
N/A (UV)
RESIDUAL, TRC)
DISSOLVED OXYGEN
12.5
m /L
8.4
m /L
1553
SM 4500
N/A
TOTAL KJELDAHL
NITROGEN (TKN)
5.68
mg/L
1.01
mg/L
63
EPA 3512
<0.02
NITRATE PLUS NITRITE
14.84
mg/L
4.1
mg/L
63
SM 4500
<0.1
NITROGEN
OIL and GREASE
<5
mg8
<5
mg8
4
EPA 1664a
<5
PHOSPHORUS (Total)
7.56
m L
3.55
m IL
65
EPA 365.4
<0.04
TOTAL DISSOLVED SOLIDS
323
Mg8
268
mg8
4
SM 2540c
<10
(TDS)
OTHER
END OF PART B.
REFER TO THE APPLICATION OVERVIEW (PAGE 1) TO DETERMINE WHICH OTHER PARTS
OF FORM 2A YOU MUST COMPLETE
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22. Page 8 of 22

FACILITY NAME AND PERMIT NUMBER:
PERMIT ACTION REQUESTED:
RIVER BASIN:
South Harnett Regional WWTP, NCO088366
Renewal
Cape Fear 03-06-14
BASIC APPLICATION INFORMATION
PART C. CERTIFICATION
All applicants must complete the Certification Section. Refer to instructions to determine who is an officer for the purposes of this
certification. All applicants must complete all applicable sections of Form 2A, as explained in the Application Overview. Indicate below which
parts of Form 2A you have completed and are submitting. By signing this certification statement, applicants confirm that they have reviewed
Form 2A and have completed all sections that apply to the facility for which this application Is submitted.
Indicate which parts of Form 2A you have completed and are submitting:
® Basic Application Information packet Supplemental Application Information packet:
® Part D (Expanded Effluent Testing Data)
® Part E (Toxicity Testing: Biomonitodng Data)
❑ Part F (Industrial User Discharges and RCRAICERCLA Wastes)
❑ Part G (Combined Sewer Systems)
ALL APPLICANTS MUST COMPLETE THE FOLLOWING CERTIFICATION.
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 is, to the best of my knowledge and belief, true,
accurate, and complete. I am aware that them are significant penalties for submitting false information, including the possibility of fine and imprisonment
for knowing violations.
Name and official title Steve Ward rector melt CountyDepartment of Public Utilities
Signature
Telephone number (91011893-7575�
/
J — Ir
Dale signed ! O
Upon request of the permitting authority, you must submit any other information necessary to assure wastewater treatment practices at the treatment
works or identify appropriate permitting requirements.
SEND COMPLETED FORMS TO:
NCDENR/ DWQ
Attn: NPDES Unit
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22. Page 9 of 22

44
FACILITY NAME AND PERMIT NUMBER:
PERMIT ACTION REQUESTED:
RIVER BASIN:
South Harnett Regional WWTP, NCO088366
Expand Discharge
Cape Fear 03-06-14
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All treatment works receiving discharges from significant Industrial users or which receive RCRA,CERCLA, or other remedial wastes must
complete part F.
GENERAL INFORMATION:
F.I. Pretreatment program. Does the treatment works have, or is subject ot, an approved pretreatment program?
❑ Yes ® No
F.2. Number of Significant Industrial Users (SIUs) and Categorical Industrial Users (CIUs). Provide the number of each of the following types of
industrial users that discharge to the treatment works.
a. Number of non -categorical SIUs.
b. Number of CIUs.
SIGNIFICANT INDUSTRIAL USER INFORMATION:
Supply the following Information for each SIU. If more than one SIU discharges to the treatment works, copy questio F.3 through F.8 and
provide the information requested for each SIU.
F.3. Significant Industrial User Information. Provide the name and address of each SIU discharging to the treat t works. Submit additional pages
as necessary.
Name: I /
Mailing Address: LIZ
FA. Industrial Processes. Describe all the industrial processes that affect or contrib to the SIU's discharge.
F.5. Principal Product(s) and Raw Material(s). Describe all of the princl processes and raw materials that affect or contribute to the SIU's
discharge.
Principal product(s):
Raw material(s):
F.6. Flow Rate.
a. Process wastewater flow rate. Indicat a average daily volume of process wastewater discharge into the collection system in gallons per
day (gpd) and w/he is continuous or intermittent.
d [ continuous or intermittent)
b. Non -process waIndicate the average daily volume of non -process wastewater flow discharged into the collection system
in gallons per daer the discharge is continuous or intermittent.
d ( continuous or intermittent)
F.7. Pretreatment Sta rds. Indicate whether the SIU is subject to the following:
a. Local limits ❑ Yes ❑ No
b. Categorical pretreatment standards ❑ Yes ❑ No
If subject to categorical pretreatment standards, which category and subcategory?
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22. Page 18 of 22

FACILITY NAME AND PERMIT NUMBER:
PERMIT ACTION REQUESTED:
RIVER BASIN:
South Harnett Regional WWTP, NCO088366
Expand Discharge
Cape Fear 03-06-14
F.8. Problems at the Treatment Works Attributed to Waste Discharge by the SIU. Has the SIU caused or contributed to any problems (e.g.,
upsets, interference) at the treatment works in the past three years?
❑ Yes ® No If yes, describe each episode.
RCRA HAZARDOUS WASTE RECEIVED BY TRUCK, RAIL, OR DEDICATED PIPELINE:
F.9. RCRA Waste. Does the treatment works receive or has it in the past three years received RCRA hazardous waste by truck, rail or dedicated pipe?
❑ Yes ® No (go to F.12)
F.10. Waste transport Method by which RCRA waste is received (check all that apply):
❑ Truck ❑ Rail ❑ Dedicated Pipe
F.11. Waste Description. Give EPA hazardous waste number and amount (volume or mass, specify units).
EPA Hazardous Waste Number Amount Units
CERCLA (SUPERFUND) WASTEWATER, RCRA REMEDIATION/CORRECTIVE ACTION
WASTEWATER, AND OTHER REMEDIAL ACTIVITY WASTEWATER:
FA 2. Remedlation Waste. Does the treatment works currently (or has it been notified that it will) receive waste from remedial activities?
❑ Yes (complete F.13 through F.15.) ® No
F.13. Waste Origin. Describe the site and type of facility at which the CERCLA/RCRA/or other remedial waste originates (or is excepted to origniate in
the next five years).
F.14. Pollutants. List the hazardous constituents that are received (or are expected to be received). Include data on volume and concentration, if
known. (Attach additional sheets if necessary.)
F.15. Waste Treatment.
a. Is this waste treated (or will be treated) prior to entering the treatment works?
❑ Yes ❑ No
If yes, describe the treatment (provide information about the removal efficiency):
b. Is the discharge (or will the discharge be) continuous or intermittent?
❑ Continuous ❑ Intermittent If intermittent, describe discharge schedule.
- - END OF PfART
R'EE Tall HE1►P;PL�ATI0N Q1ERVIEW (PAGE 1) TO aETRMIE VV'H�H 'C�TH.R !PARTS .
OF' FC3RI 12A YOU' M., UST CO
EPA EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22. Page 19 of 22

FACILITY NAME AND PERMIT NUMBER:
PERMIT ACTION REQUESTED:
RIVER BASIN:
South Harnett Regional WWTP, NCO088366
Expand Discharge
Cape Fear 03-06-14
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If the treatment works has a combined sewer system, complete Part G.
G.I. System Map. Provide a map indicating the following: (may be included with Basic Application Information)
a. All CSO discharge points.
b. Sensitive use areas potentially affected by CSOs (e.g., beaches, drinking water supplies, shellfish beds, sensitive aquatic ecosystems, and
outstanding natural resource waters).
C. Waters that support threatened and endangered species potentially affected by CSOs.
G.2. System Diagram. Provide a diagram, either in the map provided in G.1 or on a separate drawing, of the combined sewer collection system that
Includes the following information.
a. Location of major sewer trunk lines, both combined and separate sanitary.
b. Locations of points where separate sanitary sewers feed into the combined sewer system.
C. Locations of in -line and off-line storage structures.
d. Locations of flow -regulating devices.
e. Locations of pump stations.
CSO OUTFALLS:
Complete questions G.3 through G.6 once for each CSO discharge point.
G.3. Description of Outfall.
a. Outfall number
b. Location
(City or town, if applicable) (Zip Code)
(County) (State)
(Latitude) (Longitude)
C. Distance from shore (if applicable) ft.
d. Depth below surface (if applicable) ft.
e. Which of the following were monitored during the last year for this CSO?
❑ Rainfall ❑ CSO pollutant concentrations ❑ CSO frequency
❑ CSO flow volume ❑ Receiving water quality
f. How many storm events were monitored during the last year?
GA. CSO Events.
a. Give the number of CSO events in the last year.
events (❑ actual or ❑ approx.)
b. Give the average duration per CSO event.
hours (❑ actual or ❑ approx.)
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22. Page 20 of 22

FACILITY NAME AND PERMIT NUMBER:
PERMIT ACTION REQUESTED:
RIVER BASIN:
South Harnett Regional WWTP, NCO088366
Expand Discharge
Cape Fear 03-06-14
C. Give the average volume per CSO event.
million gallons (❑ actual or ❑ approx.)
d. Give the minimum rainfall that caused a CSO event in the last year
Inches of rainfall
G.S. Description of Receiving Waters.
a. Name of receiving water:
b. Name of watershed/river/stream system:
United State Soil Conservation Service 14-digit watershed code (if known):
C. Name of State Management/River Basin:
United States Geological Survey 8-digit hydrologic cataloging unit code (if known):
G.6. CSO Operations.
Describe any known water quality impacts on the receiving water caused by this CSO (e.g., permanent or intermittent beach closings, permanent or
intermittent shell fish bed closings, fish kills, fish advisories, other recreational loss, or violation of any applicable State water quality standard).
END OF PART G.
REFER TO THE APPLICATION OVERVIEW (PAGE 1) TO DETERMINE WHICH OTHER PARTS
OF FORM 2A YOU MUST COMPLETE.
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22, Page 21 of 22

EXIST.
EXIST. STORAGE
SHED
NEW SLUDGE
PROCESSING
PLANT ACCESS ROAD
NEW ICEAS NEW
YSTEM NO. 3 SYSTI
EXIST.
SPUTTER
BOX
NEW UV
UNIT NO.
1
J
I
1
1
b'
I�
I EXIST. BAC10148W
RP1P STATION
TERTIARY FILTERS NO. 2 t 3
EXIST. PARSHALL FLUME
?XIST. CASCADE AERATOR
-LPL- - -

Harnett
C O U N T Y
NORTH CAROLINA
A_ ?(�italtty W Public Utilities Department
AWWA 8 aP e
www.harnett.org
PO Box 1119
308 West Duncan Street
Lillington, NC 27546-1119
ph: 910-893-7575
fax: 91O-893-6643
December 08, 2015
NCDENR,
NPDES Permitting Unit
1617 Mail Service Center
512 North Salisbury Street
Raleigh, NC 27699-1617
Subject: Sludge Management Narrative
South Harnett Regional WWTP
NPDES # NC0088366
Dear Sir or Madam:
Harnett County Public Utilities is under contract with Synagro Southeast to manage the land application
and disposal of its biosolids. This plant has a gravity thickener, a 3 meter belt press and the Shwing Bioset
Lime Stabilization process equipment. Currently the South Harnett facility has the following 3 options for
managing its waste sludge.
1. Processing Class A Biosolids
2. Thickening and Belt pressing to approximately 23% for Class B cake land application
3. Thickening and Belt pressing to approximately 23% for landfill disposal
If you require any further information or clarification in this matter, please feel free to contact me >
Respectfully, /�
/�`'`� �"; i
Kenneth W. Fail
W WTP's Manager
HCDPU
[e-mail]
910.893.2424 Ext. 6470 (office)
strong roots • new growth

i
,• State of North Carolina
Division of Water Resources
Water Quality Regional Operations Section
Environmental Staff Report
Quality
To: ® NPDES Unit ❑ Non -Discharge Unit Application No.: NCO088366
Attn: Julie Grzyb, NPDES wastewater Complex Permitting Unit Facility name: South Harnett Regional WWTP
From: Mark Brantley
Fayetteville Regional Office
I. GENERAL AND SITE VISIT INFORMATION RECEIVEMCDENWR
1. Was a site visit conducted? ® Yes or ❑ No JAN 17 2011
a. Date of site visit: 08/23/2016 Water Quality
b. Site visit conducted by: Mark Brantley Permitting Section
c. Inspection report attached? ® Yes or ❑ No
d. Person contacted: Gabe Gutierre and their contact information: 910 436 - 8116 ext.
e. Driving directions: The wastewater treatment plant is located at 3324 Shady Grove Road, Spring Lake, N.C.
From Fayetteville, travel on Ramsey Street for 10.7 miles, turn left into Elliot Bridge Road and travel 2.6 miles,
turn left at Shady Grove Road and travel 0.1 miles. WWTP will be on the left hand side
2. Discharge Point(s):
Latitude: 36' 13' 49"N Longitude: 781 53' 00" W
Latitude: Longitude:
3. Receiving stream or affected surface waters:
Classification: Class C
River Basin and Subbasin No. Cape Fear CPF(030614)
Describe receiving stream features and pertinent downstream uses: The South Harnett County Regional
WWTP is located downstream of the Town of Spring Lake Wastewater Treatment Plant effluent.
Downstream uses: fish and wildlife propagation.
II. PROPOSED FACILITIES: NEW APPLICATIONS
1. Facility Classification: (Please attach completed rating sheet to be attached to issued permit)
Proposed flow:
Current permitted flow:
2. Are the new treatment facilities adequate for the type of waste and disposal system? ❑ Yes or ❑ No
If no, explain:
3. Are site conditions (soils, depth to water table, etc) consistent with the submitted reports? ❑ Yes ❑ No ❑ N/A
If no, please explain:
4. Do the plans and site map represent the actual site (property lines, wells, etc.)? ❑ Yes ❑ No ❑ N/A
If no, please explain:
FORM: WQROSSR04-14 Pagel of5

5. Is the proposed residuals management plan adequate? ❑ Yes ❑ No ❑ N/A
If no, please explain:
6. Are the proposed application rates (e.g., hydraulic, nutrient) acceptable? ❑ Yes ❑ No ❑ N/A
If no, please explain:
7. Are there any setback conflicts for proposed treatment, storage and disposal sites? ❑ Yes or ❑ No
If yes, attach a map showing conflict areas.
8. Is the proposed or existing groundwater monitoring program adequate? ❑ Yes ❑ No ❑ N/A
If no, explain and recommend any changes to the groundwater monitoring program:
9. For residuals, will seasonal or other restrictions be required? ❑ Yes ❑ No ❑ N/A
If yes, attach list of sites with restrictions (Certification B)
Describe the residuals handling and utilization scheme:
10. Possible toxic impacts to surface waters: Pretreatment Program (POTWs only):
M. EXISTING FACILITIES: MODIFICATION AND RENEWAL APPLICATIONS
1. Are there appropriately certified Operators in Charge (ORCs) for the facility? ® Yes ❑ No ❑ N/A
ORC: Juan G. Gutterrez Certificate #: 991628 Backup ORC: Kenny Fail Certificate #:24086
2. Are the design, maintenance and operation of the treatment facilities adequate for the type of waste and disposal
system? N Yes or ❑ No
If no, please explain:
Description of existing facilities:
• Please see attachment titled Supplement To Permit Cover Sheet from the current NPDES permit
that describes the facility.
Current permitted flow: 15.0 MGD
Explain anything observed during the site visit that needs to be addressed by the permit, or that may be important
for the permit writer to know (i.e., equipment condition, function, maintenance, a change in facility ownership,
etc.)
3. Are the site conditions (e.g., soils, topography, depth to water table, etc) maintained appropriately and adequately
assimilating the waste? N Yes or ❑ No ❑ N/A
If no, please explain:
4. Has the site changed in any way that may affect the permit (e.g., drainage added, new wells inside the compliance
boundary, new development, etc.)? ❑ Yes or N No
If yes, please explain:
5. Is the residuals management plan adequate? N Yes or ❑ No
If no, please explain:
6. Are the existing application rates (e.g., hydraulic, nutrient) still acceptable? N Yes or ❑ No ❑ N/A
If no, please explain:
7. Is the existing groundwater monitoring program adequate? ❑ Yes ❑ No N N/A
If no, explain and recommend any changes to the groundwater monitoring program:
8. Are there any setback conflicts for existing treatment, storage and disposal sites? ❑ Yes or N No
If yes, attach a map showing conflict areas.
9. Is the description of the facilities as written in the existing permit correct? N Yes or ❑ No
If no, please explain:
10. Were monitoring wells properly constructed and located? ❑ Yes ❑ No N N/A.
If no, please explain:
FORM: WQROSSR 04-14 Page 2 of 5

21 r. Are the monitoring well coordinates correct in BIMS? ❑ Yes ❑ No ® N/A
t If no, please complete the following (expand table if necessary):
Monitoring Well
Latitude
Longitude
O ► It
O ► it
O ► N
_ O ► it
O ► H
_ O ► ►►
O ► If
O ► ►►
O ► if
O ► it
12. Has a review of all self -monitoring data been conducted (e.g., DMR, NDMR, NDAR, GW)? ® Yes or ❑ No
Please summarize any findings resulting from this review: Please see attached report.
Provide input to help the permit writer evaluate any requests for reduced monitoring, if applicable.
13. Are there any permit changes needed in order to address ongoing BIMS violations? ❑ Yes or t] No
If yes, please explain:
14. Check all that apply:
® No compliance issues
❑ Notice(s) of violation
❑ Current enforcement action(s) ❑ Currently under JOC
❑ Currently under SOC ❑ Currently under moratorium
Please explain and attach any documents that may help clarify answer/comments (i.e., NOV, NOD, etc.)
If the facility has had compliance problems during the permit cycle, please explain the status. Has the RO been
working with the Permittee? Is a solution underway or in place?
Have all compliance dates/conditions in the existing permit been satisfied? ❑ Yes ❑ No ®N/A
If no, please explain:
15. Are there any issues related to compliance/enforcement that should be resolved before issuing this permit?
❑ Yes ® No ❑ N/A
If yes, please explain:
16. Possible toxic impacts to surface waters:
17. Pretreatment Program (POTWs only):
• Harnett County has a pretreatment program.
• Please see attached news article from the The Daily Record newspaper in Harnett County. It discusses a
motion to allow the South Harnett WWTP to treat leachate water from a coal ash storage facility managed by
Charah Inc.
FORM: WQROSSR 44-14 Page 3 of 5

IV. REGIONAL OFFICE RECOM31ENDATIONS
1. Do you foresee any problems with issuance/renewal of this permit? ❑ Yes or 0 No
If yes, please explain:
2. List any items that you would like the NPDES Unit or Non -Discharge Unit Central Office to obtain through an
additional information request:
Item Reason
3. List specific permit conditions recommended to be removed from the permit when issued:
Condition Reason
4. List specific special conditions or compliance schedules recommended to be included in the permit when issued:
Condition Reason
5. Recommendation: ❑ Hold, pending receipt and review of additional information by regional office
❑ Hold, pending review of draft permit by regional office
❑ Issue upon receipt of needed additional information
® Issue
❑ Deny (Please state reasons:
6. Signature of report preparer:
Signature of regional supervisor:
Date: I /
FORM: WQROSSR 04-14 Page 4 of 5

V. ADDITIONAL REGIONAL STAFF REVIEW ITEMS
Please see attached news article from the The Daily Record newspaper in Harnett County. It discusses a
motion to allow the South Harnett WWTP to treat leachate water from a coal ash storage facility managed by
Charah Inc.
FORM: WQROSSR 04-14 Page 5 of 5