NC0023736_Technical Correction_20210604

DocuSign Envelope ID:81214804-6671-4F6E-8796-9A5D2C71790E
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ROY COOPER . -El'
Governor `�
DIONNE DELLI-CATTI CC
Secretary lma+v+�
S.DANIEL SMITH NORTH CAROLINA
Director Environmental Quality
June 4, 2021
Mr. Eliza Triplett, Superintendent Wastewater Treatment
City of Lenoir, Public Utilities
PO Box 958
Lenoir,North Carolina 28645
Subject: NPDES Permit Technical Correction
Permit NC0023736
Gunpowder Creek WWTP
Caldwell County
Grade III Biological WPCS
SIC Code 4952
Dear Ms. Triplett:
The Division issued a final permit to your facility on February 22, 2021. In response to the
discovery of an incorrect parameter code in the permit,the effluent Fecal Coliform parameter code
has been corrected from 31616 to 31613 in Section A. (1.) Effluent Limitations and Monitoring
Requirements of your permit. Accordingly, we hereby forward the modified permit page (Page 3
of 13) to amend to your permit. Please insert the changed page into your permit and discard the
old page.
All other terms and conditions in the original permit remain unchanged and in full effect. These
modifications are 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 December 6, 1983.
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.
Please note that this permit is not transferable except after notice to the Division. The Division
may require modification or revocation and reissuance of the permit. This permit does not affect
the legal requirements to obtain other permits which may be required by the Division of Water
Resources or any other Federal, State, or Local governmental regulations.
North Carolina D epartment of Environmental Quality I Division of Water Resources
E 512 North Salisbury Street 11617 Mail Service Center I Raleigh,North Carolina 27699-1617
�"m+d 919.707.9000

1 DocuSign Envelope ID:81214804-6671-4F6E-8796-9A5D2C71790E
If you have any questions concerning this permit, please contact Gary Perlmutter at (919) 707-
3611 or via email at [e-mail].
Sincerely,
, ADo'c'u,Slgne+d by: .
A `'• I,, ''`
\—C464531431644FE...
for S. Daniel Smith, Director
Division of Water Resources, NCDEQ
Hardcopy: NPDES Files
Central Files
eCopy: US EPA Region 4
DWR/Wilmington Regional Office/Water Quality/Morella S. King
Town of Carolina Beach/Bill Raymond (ORC)
Q @ NorthNorth Carolina DepartmentSalisburyStreet1 o1617 Mf EnvironmentalailService Center I Raleigh,Quality I Division
North of WaterCarolina Resources
512 27699-1617
0^'^' �^ae^d0..'� /." 919.707.9000

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DocuSign Envelope ID:81214804-6671-4F6E-8796-9A5D2C71790E
NC0023736
Part 1
A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (2.0 MGD)
[15A NCAC 02B .0400 et seq., 02B .0500 et seq.] Grade III Biological Pollution Control
System [15A NCAC 08G .0302]
a. Beginning upon the effective date of the permit and lasting until permit expiration, the Permittee is
authorized to discharge treated municipal wastewater from Outfall 001. Such discharges shall be
limited and monitored' by the Permittee as specified below:
EFFLUENT CHARACTERISTICS EFFLUENT LIMITATIONS MONITORING REQUIREMENTS
Parameter Code Monthly Weekly Daily Measurement Sample Sample
Average Average Maximum Frequency Type Location
Flow 50050 2.0 MGD Continuous Recording Influent or
Effluent
BOD,5-day,20°C 2 C0310 30.0 mg/L 45.0 mg/L Daily Composite Influent&
Effluent
Total Suspended Solids(TSS)2 C0530 30.0 mg/L 45.0 mg/L Daily Composite Influent&
Effluent
NH3-N(Apr 1 -Oct 31) 2.0 mg/L 6.0 mg/L Daily Composite Effluent
C0610
NH3-N(Nov 1 -Mar 31) 4.0 mg/L 12.0 mg/L Daily Composite Effluent
Dissolved Oxygen(DO) 00300 Daily Average>_5 mg/L Daily Grab Effluent
Fecal Coliform 31613 200/100 mL 400/100 mL Daily Grab Effluent
(geometric mean)
pH 00400 Between 6.0 and 9.0 standard units Daily Grab Effluent
Total Residual Chlorine 3 50060 28 pg/L Daily Grab Effluent
Temperature 00010 Monitor and Report Daily Grab Effluent
Total Nitrogen C0600 Monitor and Report Monthly Composite Effluent
(NO2+NO3+TKN)
Total Phosphorus C0665 Monitor and Report Monthly Composite Effluent
Conductivity 00094 Monitor and Report Daily Grab Effluent
Chronic Toxicity4 THP3B Monitor and Report Quarterly Composite Effluent
Total Hardness(as CaCO3) 00900 Monitor and Report Quarterly Composite Effluent
(mg/L)5
Total Chromium(as Cr) 01034 Monitor and Report Quarterly Composite Effluent
Total Copper(as Cu) 01042 15.4 pg/L 18.8 pg/L Monthly Composite Effluent
Total Lead(as Pb) 01051 5.7 pg/L 136 pg/L Monthly Composite Effluent
Total Silver(as Ag) 01077 Monitor and Report Quarterly Composite Effluent
Total Zinc(as Zn) 01092 225 pg/L 225 pg/L Monthly Composite Effluent
Effluent Pollutant Scan NC01 Monitor and Report Footnote 6 Footnote 6 Effluent
DocuSigned by:
Footnotes on next page.
C464531431644FE_.
for S. Danny Smith,Director
Date: June 4,2021
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