NC0038831_Minor Modification_20170112

Water Resources
ENVIRONMENTAL QUALITY
January 12, 2017
ROY COOPER
cove, aoI
S JAY ZIMMERMAN
Dv ecro,
Mr. Matthew Klein
Carolina Water Service, Inc. of North Carolina
PO Box 240908
Charlotte, NC 28224-0908
Subject: Minor modification of NPDES Permit NCO038831
Carolina Trace WWTP
Lee County
Dear Mr Klein SQ' /
o requ
Th
The Division has received and approved y est to transfer ownership of the subject permit
As a result, the Division hereby reissues NC008 is permit is issued pursuant to the requirements of
North Carolina General Statute 143-215.1 and the Memorandum of Agreement between North Carolina and
the U.S. Environmental Protection Agency dated October 15, 2007 (or as subsequently amended). Insert the
attached page into your permit and discard the old page.
This modified permit includes the following changes from your current permit:
➢ Change of ownership from Carolina Trace Utilities, Inc. to Carolina Water Service, Inc. of North
Carolina.
➢ Section A.(7) has been updated to require electronic submission of effluent data. Federal
regulations require electronic submittal of all discharge monitoring reports (DMRs).
If any parts, measurement frequencies or sampling requirements contained in this modification 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
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 any other Federal, State, or Local governmental
regulation. If you have any questions concerning this matter, please contact Brianna Young at (919) 807-
6388 or via e-mail [[e-mail]]
cc Central Files
Raleigh Regional Office
NPDES File
Sincerely,
S. Jay Zimmerman, Director
Division of Water Resources
State of North Carolina I Environmental Quality I Water Resources
1617 Mail Service Center I Raleigh, NC 27699-1617
919 807 6300 919-807-6389 FAX
https //deq nc gov/about/divisions/water-resources/water-resources-permits/wastewater-branch/npdes-wastewater-permits

Permit NC0038831
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 provision 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,
Carolina Water Service, Inc. of North Carolina
is hereby authorized to discharge wastewater from a facility located at the
Carolina Trace WWTP
5448 Cox Mill Road
Sanford
Lee County
to receiving waters designated as the Upper Little River in subbasin 03-06-13 of the Cape Fear
River Basin in accordance with effluent limitations, monitoring requirements, and other
conditions set forth in Parts I, II, III and IV hereof.
This permit shall become effective7-shall
This permit and authorization to disc ' e at midnight on September 30, 2021.
Signed this day January 12, 2017.
S. Jay Zimmerman, P.G , Director
Division of Water Resources
By Authority of the Environmental Management Commission
Page 1 of 11

Permit NCO038831
Part I
A. (1) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (0.675
MGD)
[ 15A NCAC 02B.0400 et seq., 15A NCAC 02B.0500 et seq.]
Beginning with the effective date of this permit and lasting until expansion above 0.675 MGD or
expiration, whichever is sooner, the Permittee is authorized to discharge treated wastewater from Outfall
001. Such discharges shall be limited and monitored' by the Permittee as specified below:
EFFLUENT CHARACTERISTICS
Parameter Code
EFFLUENT LIMITATIONS
MONITORING REQUIREMENTS
Monthly Average
Daily Maximum
Measurement
Frequency
Sample
Type
Sample
Location
Flow 50050
0 675 MGD
Continuous
Recording
Influent or Effluent
BOD, 5 -day, (20°C) — Summer* C0310
5 0 mg/L
7 5 mg/L
3Meek
Composite
Effluent
BOD, 5 -day, (20°C) — Winter* C0310
10 0 mg/L
15 0 mg/L
3/Week
Composite
Effluent
Total Suspended Solids C0530
30,0 mg/L
45 0 mg/L
3Meek
Composite
Effluent
NH3 as N — Summer* C0610
2 0 mg/L
10,0 mg/L
3Meek
Composite
Effluent
NH3 as N — Winter* C0610
4 0 mg/L
20,0 mg/L
3/Week
Composite
Effluent
Dissolved Oxygen 00300
Daily average > 5 0 mg/L
3Meek
Grab
Effluent
Fecal Coliform 31616
(geometric mean)
200/100 ml
400/100 ml
3Meek
Grab
Effluent
Total Residual Chlorine 3 50060
22 Ng/L
3Meek
Grab
Effluent
Temperature (°C) 00010
Daily
Grab
Effluent
pH 00400
> 6 0 and < 9 0 standard units
3Meek
Grab
Effluent
Total Nitrogen C0600
(NO2+NO3+TKN)
Quarterly
Composite
Effluent
Total Phosphorus C0655
Quarterly
Composite
Effluent
Chronic Toxicity 4 TGP38
Quarterly
Composite
Effluent
Fecal Coliform
(geometric mean) 31616
Variable 5
Grab
Upstream &
Downstream 2
Temperature (°C) 00010
Variable 5
Grab
Upstream &
Downstream 2
Dissolved Oxygen 00300
Variable 5
Grab
Upstream &
Downstream 2
*Summer April 1 —October 31
*Winter November 1 — March 31
Footnotes:
1. The permittee shall 1submitS discharge monitoring reports electronically using the NC DWR's eDMR
application system [see A (7)]
2 Upstream = at least 100 feet above the outfall Downstream = at NCSR 1222 Carolina Trace WWTP is a
participant of the Middle Cape Fear Basin Association and thus instream monitoring requirements as specified
in this permit are waived Should the Carolina Trace WWTP's membership in the association be terminated for
any reason, the Permittee shall notify the Division in writing, and immediately resume instream monitoring
and sampling according to this permit.
3 Limit and monitoring requirements apply only if chlorine is used for disinfection The facility shall report all
effluent TRC values reported by a NC certified laboratory including field certified However, effluent values
below 50 pg/L will be treated as zero for compliance purposes
4. See section A (4).
5 Variable: instream samples shall be collected 3/week during the summer months of June, July, August,
and September; samples shall be collected weekly during the rest of the year.
Page 3 of 11

Permit NCO038831
AMOUNTS.
A. (4) CHRONIC TOXICITY PERMIT LIMIT (QUARTERLY) - (0.675 MGD)
[15A NCAC 02B.0200 et seq.]
The effluent discharge shall at no time exhibit observable inhibition of reproduction or
significant mortality to Ceriodaphnia dubia at an effluent concentration of 67%.
The permit holder shall perform at a minimum, quarterlmonitoring 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 20 10) 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 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
1623 Mail Service Center
Raleigh, NC 27699-1623
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
Page 5 of 11

Permit NCO038831
Water Sciences Section/Aquatic Toxicology Branch
1623 Mail Service Center
Raleigh, NC 27699-1623
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. (6) NUTRIENT REOPENER CONDITION
[NCGS 143-215.1 (b)]
Pursuant to N.C. General Statutes Section 143-215.1 and the implementing rules found
in the North Carolina Administrative Code at 15A NCAC 2H.0112 (b) (1) and 2H.0114 (a)
and Part II sections B-12 and B-13 of this permit, the Director may reopen this permit to
require supplemental nutrient monitoring of the discharge. The purpose of 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. In addition, the results of water quality modeling may require that
limits for total nitrogen and total phosphorus be imposed in this permit upon renewal.
Page 7 of 11

Permit NC0038831
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(l)(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:
http: / /www2.epa.gov/compliance/final-national-pollutant-discharge-elimination-
system-npde s -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.
Information on eDMR and the application for a temporary electronic reporting waiver are
found on the following web page:
http: / /deq.nc.gov/about/divisions/water-resources/edmr
4. Signatory Requirements [Supplements Section B. (11.) (b) and Supersedes
Section B. (11.) (d)]
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
Page 9 of 11

Permit NCO038831
Carolina Water Service, Inc. of North Carolina
Carolina Trace WWTP
NPDES Permit NCO038831
Receiving Stream Upper Little River Stream Class, C
Stream Segment 18-20-(8) Sub -Basin # 03-06-13
River Basin* Cape Fear HUC• 0303000402
County Lee
lul
Page 11 of 11
Facility Location
r sit �1''L
scale not shownr�
35 4166670, -79 0875000
USGS Quad Broadway