NC0024147_Modifications IUP 000041_20220322

City of 'anforb
WASTEWATER MANAGEMENT FACILITY
Sarah Jordan
Pretreatment Coordinator
sarah.iordan(a)sanfordnc.net
Phone:[phone]
March 21, 2022
Mr. Keyes McGee RECEIVED
Department of Water Quality, PERCS
1617 Mail Service Center MAR 2 3 2022
Raleigh,NC 27699-1617
NCDEQIDWRINPDES
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,
Sarah Jordan
Pretreatment Coordinator
City of Sanford
Enclosures

J �
P.0.Box 3729 PHONE[phone]
Sanford,NC 27330 Fax [phone]
Cap of 'anforb
SARAH JORDAN
Pretreatment Coordinator
[e-mail]
WASTEWATER MANAGEMENT FACILITY
March 21,2022
Mr.Justin Batchelor
ESM/PSM Coordinator
Tyson Foods Inc. Mexican Original RECEIVED
800 East Main Street
Sanford,NC 27330 MAR 2 3 2022
NCDEQ/DWR/NPDES
Subject Transmittal Letter for Industrial User Permit#000041
Dear Mr. Batchelor.
Enclosed is modified Industrial User Permit 000041.Changes are as follows:
1. On pipe 01 the flow has been changed to a monthly average of 0.050 MGD.
2. COD monitoring has been removed in order to align with other permits on the City of Sanford's
pretreatment program.
The modified pages included are 1,2, and 5.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,
Sarah Jordan
Pretreatment Coordinator
City of Sanford

CITY OF SANFORD
Control Minority andbr Ma:apaity
PERMIT
Industrial User Pretreatment Permit(IUP)
To Discharge Wastewater Under the
Industrial Pretreatment Program
000041
IUP timber
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,permittee:
TYSON FOODS INC. MEXICAN ORIGINAL
Facility Located at Street Address
800 East Main Street
City
Sanford
State,Zip
North Carolina 27332
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 andlor Municipality WWTP name:
City of Sanford Big Buffalo Creek WWTP
NPDES Number.
NC 0024147
WNW 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 stall become
effective at midnight on this date:
March 21, 2022
Expiation date,this permit and the authorization to dischrage shag expire at
midnight on this date:
September 30, 2024
1� LZ b. -1J
Ihn1'Urr uufrS'LltiC N'lltkti

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
IUP Name: IUP Number.
TYSON FOODS INC. MEXICAN ORIGINAL 000041
IUP Effective date: Pipe Numbers,list all regulated pipes:
March 21,2022 Pipe 01
IUP Expiration date: IUP 40 CFR#(if applicable),or N/A:
September 30,2024 N/A
B. IUP History. A Complete Permit History is required):
Effective Renewal or Description of changes over previous IUP.
Date Modification
Changed from a general permit to an IUP due
09/30/19 New Permit to increase in production affecting flow rate.
50,000 gallon per month average.
I/2/20 Modification Removed pH adjustment from treatment units
and corrected the date error on page 5.
8/20/20 Modification Due to this permit changing from a general to
and Industrial User permit,please pay attention
to new sampling requirements,namely Total
Cyanide.
3/21/22 Modification Fixed typographical error in flow limits from
0.5 MGD daily max to 0.05 MGD monthly
average. Removed COD monitoring.
2

ReceivingPOTW name => WWTPTyson Foods Inc.Mexican Original
Big Buffalo IUname Sanford
IUP, Part 1 Section F: Receiving POTW NPDES #_> NC 0024147 IUP#_> 000041
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#_> N/A
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# I =>
INTERIM Limits for period #2=>
FINAL Limits Page=>
Concentration Limits Monitoring Frequency
Monthly Sample Collection
Daily Average Method Required Lahoralory
Max Units • By Industry By City (C or GI Detection Level in mg/1
1 Flow(Monthly Average) 0.05 MOD Daily k/Composite Sampling Event Each Composite Sampling Event Metered
2 Ammonia m /I 1 per six months Composite 0,1
3 C800-5 mg/I I per six months I per six months Composite 2,0
4 Mercury mg/I I per six months Composite .0002
5 Oil 6 Grease mg/I I per six months 1 per six months Grab 5.0
6 pH(Range Min./Max,) . G.0-10.5 Std.Units I per six months 1 per six months Grab
7 Temperature 88°C °C I per six months Instantaneous
8 Total Nitrogen(NO2+NO3+TKN) 1 mg/I I per six months _ Composite D.5
9 Total Phosphorous mI/I I 'er six months Composite 0.1
10 Total Cyanide mi/I I ier six months I ler six months Grab 1.0
11 TSS mg/I I per six months I per six months Composite 2,0
12 Zinc 1.24 mg/I 1 per six months 1 per six months Composite 0.05
5

Page 1 Allocation Table for State Modified December 2021.xlsx
Allocation Table Spreadsheet Instructions:
Headworks last approved: 02/22/18 1)Applicable Values should be entered in the Heavy Bordered cells. Rest of worksheet is protected,password is
Allocation Table updated: 03/21/22 2)Formulas are discussed in the Comprehensive Guidance,Chapter 6,Section C.
Permits last modified: 03/21/22 3)HWA and AT worksheets in this workbook are linked. Pollutant Names,MAHLs,Basis,and Uncontrollable load
in this AT worksheet are automatically entered from the HWA spreadsheet. This includes pollutant names in
columns AT through BK.
Pores=> City of Sanford
NPDES#=> NC0024147
FLOW I BOD I TSS E
Industry Type Renewal Modification Date )ermit Limits Permit Limits Permit Limits P
IUP INDUSTRY NAMES Permit Pipe of Effective Effective Permit Conc. Load Conc. Load
Count (please listalphabeticly) number number Industry Date Date Expires MGD gal/day mg/1 lbs/day mg/1 lbs/day
1 Arauco 0042 01 &02 j 429 I 11/5/2020 I I 9/30/20241 0.15 150000 I
2 Caterpillar Boone Trail 0040 _ 01 &02 433 09/30/19 11/12/21 09/30/24 0.0270 27,000
3 Caterpillar Womack 0033 01 &02 433 09/30/19 03/21/22 09/30/24 0.0440 44,000
4 Charah 0035 0001 coal ash 09/30/19 09/30/24 =211 288,000
5 Coty 0010 0001 cosmetics 09/30/19 ' 09/30/24 0.0661 66,098
6 Hydro Tube 0034 01 &02 433 09/30/19 09/30/24 0.0075 7,500 _
7 Moen 0008 01 &02 433 09/30/19 09/30/24 0.2940 294,000
8 Pfizer 0022 01 &02 433 09/30/19 _ 09/30/24 0.4426 442,610 _
9 STI Polymer 0032 01 &02 433 09/30/19 09/30/24 0.025r 25,000
10 Trion 0013 01 &02 433 09/30/19 03/21/22 09/30/24 0.0284 28,350
11 Tyson 0041 0001 09/30/19 _ 03/21/22 09/30/24 0.0500 50,000
12
Column Totals=> 1 1.24561 1,245,558, I 01 0
Basis=> NPDES Design Design
MAHL from HWA(lbs/day)_> NPDES Permitted Flow=> 12.0000 23419 40032
Uncontrollable Loading(lbs/day)_> 3.4651 5577 8641
Total Allowable for Industry(MAIL)(lbs/day)_> 8.5349 17841 31391
Total Permitted to Industry(lbs/day)=> 1.2456 0 0
MAIL left(lbs/day)=> 7.2894 17841 31391
Percent Allow.Ind.(MAIL)still available(%)_> 85.4% 100.0% 100.0%
Percent MAHL still available(%)_> 60.7% 76.2% 78.4%
5 Percent MAHL(lbs/day)_> 0.6000 1171 2002

Page 2 Allocation Table for State Modified December 2021.xlsx
Allocation Table
Headworks last approved: 02/22/18
Allocation Table updated: 03/21/22
Permits last modified: 03/21/22
POTw=> City of Sanford
NPDES#=> NC0024147
kmmonia I Arsenic Cadmium Chromium I Copper I
Industry ermit Limits Permit Limits Permit Limits Permit Limits Permit Limits P
IUP INDUSTRY NAMES Permit Pipe Conc. Load Conc. Load Conc. Load Conc. Load Conc. Load
Count (please list alphabetioly) number number mg/1 lb!/ mg/1 lbs/day mg/1 lbs/day mg/1 lbs/day mg/1 lbs/day
1 Arauco 0042 01 &02 0.01 0.01251 1.5 1.8765 0.4 0.50041
2 Caterpillar Boone Trail 0040 01 &02 _ 0.0500 0.0113 1.5000 0.3378 1.4200 0.3198
3 Caterpillar Womack 0033 01 &02 0.0500 0.0183 1.5000 0.55041.0 0.5211
4 Charah 0035 0001 0.0990 0.2378 0.0129 0.0310
5 Coty 0010 0001
6 Hydro Tube 0034 01 &02 =157 0.0031 1.5000 0.0938 1.4200 0.0888
7 Moen 0008 01 &02 _� 1.5000 3.6779 �0 3.4818
8 Pfizer 0022 01 &02 61.00 225.17 0.0500 0.1846 1.5000 5.5371
9 STI Polymer 0032 01 &02 _
10 Trion 0013 01 &02 0.0500 0.0118 1.5000 0.3547 0.3357
11 Tyson 0041 0001
12
Column Totals=> I 1 2251 1 0.2378j 1 0.21791 1 10.24491 I 4.4274!
Sludge Sludge AS/Nit/TF
Basis=> Design Ceiling Ceiling inhibition Sludge Ceiling
MAHL from HWA(lbs/day)_> 2421.94 0.3918 0.2983 12.8527 11.2336
Uncontrollable Loading(lbs/day)_> 765.82 0.0636 0.0058, 0.3381 3.7857
Total Allowable for Industry(MAIL)(lbs/day)=> 1656.12 0.3282 0.2925 12.5146 7.4478
Total Permitted to Industry(lbs/day)_> 225.17 0.2378 0.2179 10.2449 4.4274
MAIL left(lbs/day)_> 1430.95 0.0905 0.0746 2.2697 3.0204
Percent Allow. Ind.(MAIL)still available(%)=> 86.4% 27.6% 25.5% 18.1 % 40.6%
Percent MAHL still available(%)=> 59.1 % 23.1 % 25.0% 17.7% 26.9%
5 Percent MAHL(lbs/day)_> 121.10 0.0196 0.0149 0.6426 0.5617

Page 3 Allocation Table for State Modified December 2021.xlsx
Allocation Table
Headworks last approved: 02/22/18
Allocation Table updated: 03/21/22
Permits last modified: 03/21/22
POTw=> City of Sanford
NPDES#=> NC0024147
1 'Cyanide I Lead 'Mercury Molybdenum I Nickel
Industry ermit Limits Permit Limits Permit Limits Permit Limits Permit Limits P
IUP INDUSTRY NAMES Permit Pipe Conc. Load Conc. Load Conc. Load " Conc. Load Conc. Load
Count (please list alphabeticly) number number mg/1 lbs/day mg/1 lbs/day mg/1 lbs/day mg/1 lbs/day mg/1 lbs/da
1 Arauco 0042 Ol &02r, 0.15 0.18765 0.3 0.3753 1 1.2510
2 Caterpillar Boone Trail 0040 01 &02 0.1500 0.0338* 0.3000 0.0676 1.0000 0.2252
3 Caterpillar Womack 0033 01 &02 0.1500 0.0550 0.3000 0.1101 1.0000 0.3670
4 Charah 0035 0001 0.1500 0.3603 0.00083 0.00199 0.0560 0.1345 0.0220 0.0528
5 Coty 0010 0001
6 Hydro Tube 0034 01 &02 0.1500 0.0094 0.3000 0.0188 0.5000 0.0313
7 Moen 0008 01 &02 0.1500 0.3678 0.3000... 0.7356� 0.5000 1.2260
ii
8 Pfizer 0022 01 &02 0.1000 0.3691 0.3000 1.1074
9 STI Polymer 0032 01 &02 0.1500 0.0313 0.1000 0.0209
10 Trion 0013 01 &02 0.1500 0.0355 0.3000 0.0709 �� 0.50004 0.1182
I11 Tyson 0041 0001 '
4 I
12
Column Totals=> 1.22841 1 2.0636 0.001994J I 0.13451 1.7953
Sludge
Stream Sludge Sludge Ceiling
Basis=> Std Ceiling NPDES Ceiling HASL
MAHL from HWA(lbs/day)_> 2.4820 3.2374 0.097863, 0.3287 4.2244
Uncontrollable Loading(lbs/day)_> 0.0694 0.1792 0.008670 0.1792 0.2254
Total Allowable for Industry(MAIL)(lbs/day)_> 2.4127 3.0582 0.089194 0.1495 3.9990
Total Permitted to Industry(lbs/day)_> 1.2284 2.0636 0.001994 0.1345 1.7953
MAIL left(lbs/day)_> 1.1843 0.9946 0.087200 0.0150, 2.2038
Percent Allow.Ind.(MAIL)still available(%)_> 49.1 % 32.5 % 97.8% 10.0% 55.1
Percent MAHL still available(%)=> 47.7% 30.7% 89.1 % 4.6% 52.2
5 Percent MAHL(lbs/day)_> 0.1241 0.1619 _ 0.004893 0.0164 0.2112

Page 4 Allocation Table for State Modified December 2021.xlsx
Allocation Table
Headworks last approved: 02/22/18
Allocation Table updated: 03/21/22
Permits last modified: 03/21/22
POTW=> City of Sanford
NPDES#=> NC0024147
Selenium I Silver I Zinc Total Nitrogen Total Phos. I
Industry ermit Limits Permit Limits Permit Limits Permit Limits Permit Limits P
IUP INDUSTRY NAMES Permit Pipe Conc. Load Conc. Load Conc. Load Conc. Load Conc. Load
Count j (please list alphabeticly) number number mg/1 lbs/day mg/1 lbs/day mg/1 lbs/day mg/1 lbs/day mg/1 lbs/day
1 Arauco 0042 01 &02 0.24 0.30024 1.24 1.5512
2 Caterpillar Boone Trail 0040 01 &02 0.2400 0.0540 1.2400 0.2792
3 Caterpillar Womack 0033 01 &02 0.2400 0.0881 1.2400 0.4550
4 Charah 0035 0001 0.0990 0.2378 0.0429 0.1030
5 Coty 0010 0001 1.. _
6 Hydro Tube 0034 01 &02 ~0.�2 0 0.0150 0k 0.0776 _
7 Moen 0008 01 &02 0.2400 0.5885 1.2400 3.0404 _
8 Pfizer 0022 01 &02 0.240 0.8859 _
9 STI Polymer 0032 01 &02 ` 0 0.0209 _
10 Trion 0013 01 &02 0.0567 1.2400 0.2932
11 Tyson 0041 0001 1.2400 0.5171 ..1
12
Column Totals=> I I 0.23781 I 1.6342 4.5071- I 0.00] 0.00
Sludge AS/Nit/TF Sludge
Basis=> Ceiling inhibition Ceiling Design Design
MAHL from HWA(lbs/day)_> 0.4702 8.1553 22.3192 ####### 2081.66
Uncontrollable Loading(lbs/day)=> 0.0433 0.0173 5.8693
Total Allowable for Industry(MAIL)(lbs/day)_> 0.4268 8.1379 16.4498 ####### #######
Total Permitted to Industry(lbs/day)_> 0.2378 1.6342 4.5071 0.00 0.00
MAIL left(lbs/day)_> 0.1891 6.5037 11.9427 ####### #######
Percent Allow. Ind.(MAIL)still available(%)_> 44.3 % 79.9% 72.6% ####### #######
Percent MAHL still available(%)_> 40.2% 79.7% 53.5% ####### #######
5 Percent MAHL(lbs/day)=> 0.0235 0.4078 1.1160 227.18 104.0832