NC0024147_Modifications IUP 000013_20220322

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WASTEWATER MANAGEMENT FACILITY
Sarah Jordan
Pretreatment Coordinator
sarahJordan aasanfordnc.net
Phone:[phone]
March 21,2022
Mr. Keyes McGee RECEIVED
Department of Water Quality, PERCS GV
1617 Mail Service Center MAR 23 2022
Raleigh,NC 27699-1617
NCDEQ/DWR/NPDES
Subject: Permit Modifications for IUP 000013, IUP 000033,and IUP 000041
Dear Mr. McGee:
The City of Sanford is submitting modified IUPs 000013, 000033,and 000041. Modifications are as
follows for each IUP.
• IUP 13: The TTO Sampling requirement for the City was changed to"1 per 12 months
providing the certification is not submitted"to align with other IUPs on the pretreatment
program.
• IUP 33: Changed the pipe 02 flow limit from 0.0373 MGD to 0.044 MGD due to an employee
and production increase. Also removed the COD monitoring requirement on pipe 02 for the City
of Sanford POTW. Clarified the City's TTO requirement on pipe 01 to align with the rest of
IUPs on the pretreatment program.
• IUP 41: I fixed typographical error in flow limits from 0.5 MGD daily max to 0.05 MGD
monthly average and removed COD monitoring.
Attached is a copy of each modified permit,copies of each of the transmittal letters, and an updated
allocation table.
If there are questions or comments please feel free to contact me at(919)777-1783.
Sincerely,
4-t1/
Sarah Jordan
Pretreatment Coordinator
City of Sanford
Enclosures

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P.0.Box 3729 PHONE[phone]
Sanford,NC 27330 Fax [phone]
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SARAH JORDAN
Pretreatment Coordinator
[e-mail]
WASTEWATER MANAGEMENT FACILITY
March 21,2022
Mr. Gray Hall
Production Manager
Trion,Incorporated
101 McNeill Road
Sanford,NC 27330
Subject: Transmittal Letter for Industrial User Permit#000013
Dear Mr. Hall:
Enclosed is modified Industrial User Permit 000013.Changes are as follows:
1. On pipe 01 the TTO sampling requirement for the City has been changed to"1 per twelve
months providing the certification is not submitted"to align with other permits on the City of
Sanford's pretreatment program.
The modified pages included are 1,2, 3 and 6. Please add these modified pages to your current IUP.
Remove the former pages and place them in a separate"historical"file and retain them for future
reference.
Please read this permit carefully,paying special attention to the changes referenced above. If any parts
(measurement frequencies, sampling requirements,and/or limits)contained in this permit are
unacceptable to you,you have the right to an adjudicatory hearing upon written request within thirty
(30)days following the receipt of this letter. Unless such demand is made,this decision shall be final
and binding.
Sincerely,
564&41—'
Sarah Jordan
Pretreatment Coordinator
City of Sanford

CITY OF SANFORD
Control Authority ardlor Municipality
PERMIT
Industrial User Pretreatment Permit(IUP)
To Discharge Wastewater Under the
Industrial Pretreatment Program
000013 433
IUP Number 40 CFR Category(A Applicable)
In compliance with the provisions of North Carolina General Statute 143-215.1, any
applicable federal categorical pretreatment regulations, all other lawful standards and
regulations promulgated and adopted by the North Carolina Environmental Management
Commission, and the Control Authority and/or Municipality Sewer Use Ordinance. The
following Industry hereafter referred to by name or as the permittee:
Industry name.pernittee:
ASC/TRION
Facility Located at Street Address
101 McNeill Road
City
Sanford
State,Zip
North Carolina 27330
is hereby authorized to discharge wastewater from the facility located at the above listed
address into the sanitary sewer collection system and the wastewater treatment facility of
the Control Authority and/or Municipality listed below:
IUP Control Authority and/or Municipality WWTP name:
City of Sanford Big Buffalo Creek WWTP
NPDES Number:
NC 0024147
VVWiP Address'
5327 Iron Furnace Road
City,State,Zip
Sanford, North Carolina 27331-3729
in accordance with effluent limitations, monitoring requirements, and all other conditions
set forth in Parts I, II, and III of this Industrial User Pretreatment Permit(IUP).
Effective date. this permit and the authorization to discharge shall become
effective at midnight on this date-
March 21, 2022
Expiration date,this permit and the authorization to discharge shall expire at
midnight on this date
September 30, 2024
. 1,'D • ZZ. l .21
Data'g'� I hrcti oU Mc Works

Industrial User Pretreatment Permit (IUP)
PART I
Specific Conditions
IUP, PART I, OUTLINE:
A.) IUP Basic Information
B.) IUP Modification History
C.) Authorization Statement
D.) Description of Discharges
E.) Schematic and Monitoring Locations
F.) Effluent Limits & Monitoring Requirements
G.) Definitions and Limit Page(s)notes
A. IUP Basic Information:
Receiving Control Authority&WWTP name: POTW NPDES#:
City of Sanford Big Buffalo WWTP NC 0024147
Il it'Name: ItiP Number:
ASC/Trion 000013
IUP Effective date: Pipe Numbers,list all regulated pipes:
March 21, 2022 Pipe 01 & Pipe 02
IUP Expiration date: II JP 40 CFR#(if applicable),or N/A:
September 30, 2024 40CFR 433
B. IUP History
Effective Date Renewal or Modification Description of changes over previous IUP.
4/01/97 Modified Per DEM, changed the expiration date, added the option for the Industry to certify instead of
sampling for Till D for the City to sample for Till annually if the Industry does not certify.
1D/1/DO Renewal The permit was renewed the effective and expiration date was changed. Part III,3 was
modified to include calibrations of flow metering equipment to be completed by a
nonaffiliated third party. B0D5 was removed from pipe 02. BM is no longer a surcharge
parameter in the revised SOD. Aluminum monitoring was added to pipe 01.
3/12/02 Modified The monitoring frequencies were changed for Cd,NH3,and Al.
7/1/04 Modified The nickel limit was changed due to the new HWA. Detection limit for As, Cd,Cr,Cu, Cn, Pb,
Ni,Ag,in, DEG, NH3, CBDD-5,Total Nitrogen,and Total P.was changed to ensure industrial
compliance.
9/30/09 Renewal Changed flow limit,added parameters found in effluent and parameters that are required for
LIMP
12/1/D9 Modified Added previous history,changed the detection limit for Cd&in,dropped the requirement for
the industry to sample for in,added chlorides to the industry's monitoring requirement,and
changed the wording of the flow monitoring requirements.
4/1/10 Modified Changed the monitoring requirement for Hg from a grab sample to a Composite sample and
removed PERCS guidance from the IOP history.
2/22/2011 Modified Changed the TSS detection limit.
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Industrial User Pretreatment Permit(IUP)
PARTI
Specific Conditions
09/30/2014 Renewal Permit Renewal.Bottom pH limit increased to 6.0 to comply with WWIP standard limits.
3/B/16 Modification Changed cyanide monitoring frequency to"1 per six months"for the City of Sanford POTW.
10/24/16 Modification Changed detection limit for chloride and changed"chlorides"to chloride on pipe 02
9/30/19 Renewal Permit Renewed for 5 years.
03/21/22 Modification Changed TT0 requirement for the City to"I per 12 months,providing the certification is not
submitted"to align with other IUPs on the pretreatment program.
C.) Authorization Statement:
1.) The Permittee is hereby authorized to discharge wastewater in accordance with
the effluent limitations, monitoring requirements, and all other conditions set
forth in this Industrial User Pretreatment Permit(IUP)into the sewer collection
system and wastewater treatment facility of the Control Authority and/or
Municipality.
2.) The Permittee is hereby authorized to continue operation of and discharge
wastewater from the following treatment or pretreatment facilities. These
facilities must correspond to the treatment units listed on both the application
and inspection forms.
IU Treatment Units
List ali Treatment Units Descriptions:
Spill Protection Pit and curbing
Sump Pit Holding Tank
3.) The Permittee is hereby authorized to, if required by the Control Authority
and/or Municipality and after receiving Authorization to Construct (A to C)
from the Control Authority and/or Municipality, construct and operate
additional pretreatment units as needed to meet final effluent limitations.
D.) :se Description of IUP Discharge(s):
g ( )
1. Describe the discharge(s) from all regulated pipes.
Pipe#01,Description of Discharge:Discharge consists of chemical rinse,powder wash
system,liquid booth and liquid wash tanks.
Pipe#02,Description of Discharge: Discharge from the sanitary sewer,pipe 01.
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Receiving POTW name => Big Buffalo WWTP IU name => ASC/TRIDN
IUP, Part 1 Section F: Receiving POTW NPDES#=> NC 0024147 IUP#=> 000013
Effluent Limits and Monitoring Requirements Effective date for these Limits=> March 21,2022 Pipe#=> 01
Expiration date for these Limits=> September 30,2024 40 CFR#=> 433
The Permittee may discharge from this specific if not applicable put N/A
THE LIMITS ON THIS PAGE ARE,(Check one below):
Pipe number according to these specific dates, LIMITS for ENTIRE permit period => X
effluent limits, and monitoring requirements INTERIM Limits for period# 1 =>
INTERIM Limits for period#2 =>
FINAL Limits Page =>
Concentration Limits Monitoring Frequency
Required
Sample Laboratory
Collection Detection
Method Level in
Daily Max Units _ By Industry By City (C or G) mg/I
I Flow MGD Daily&Each Composite Sampling Event Each Composite Sampling Event Metered
2 Arsenic mg/I I per six months Composite .005
3 Cadmium 0.05 mg/I 1per six months 4 per six months Composite .002
4 Chloride mg/I I per six months Grab 10.0
5 Chromium 1.50 mg/I 4 per six months Composite .005
6 Copper 1.42 mg/I 4 per six months Composite .005
7 Cyanide 0.15 mg/I 4 per six months I per six months Grab .01
8 Lead 0.30 mg/I 4 per six months Composite .005
9 Mercury mg/I 2 per six months Composite .0002
1 10 Nickel 0.50 mg/I 4 per six months Composite .005
II pH(Range Min./Max.) 6.0-10.5 Std.Units 4 per six months Grab Std.Units
12 Silver 0.24 mg/I 4 per six months Composite .005
13 Temperature 66 °C 4 per six months Instantaneous °C
14 Toluene mg/I I per six months Grab 0.01
15 TTD 2.13 mg/I I per six months I per twelve months providing the certification is not Grab
submitted
16 Zinc 1.24 mg/I 4 per six months Composite 0.01
17 Xylene mg/I I per six months Grab 0.01
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