NC0026689_Pretreatment Annual Report_20230111

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TOWN OF DENTON
January 6,2023 RECEIVED
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North Carolina Department of Environmental Quality JAN 1 12023
Division of Water Resources d►t�e® �A�
1617 Mail Service Center NYC+ EQI W D V,NPOE
Raleigh, NC 27699-1617
Subject: Pretreatment Annual Report
Town of Denton WWTP NC0026689
Dear Sirs/Ma'am,
Enclosed is the original and one copy of the Town of Denton 2022 Pretreatment Annual Report(PAR)for
the period covering January 1,2022,thru December 31,2022.
If you require any additional information or have questions regarding this report, please contact me at
336-859-4460 or [e-mail].
Sincerely,
roy B. Branch, UMC
Pretreatment Coordinator
Town of Denton WWTP ORC
201 W. Salisbury Street
P.O. Box 306 Phone: [phone]
Denton,NC 27239 Fax: [phone]
This institution is an equal opportunity provider and employer

Town of Denton (NPDES # NC0026689)
2022 PAR
NARRATIVE
GENERAL INFORMATION:
GENERAL PROGRAM INFORMATION:
• AT, STMP, SUO, ERP, and IWS are up to date.
• HWA has been submitted and reviewed.
• STMP was updated November 25, 2022 to show the addition of TN,TPhos,
Dichlorobromomethane, and Bis (2-Ethylhexyl)Phthalate to POC as well as change
Metals PQL to Method 200.8
• AT showed over-allocation of Zinc and Silver. The over-allocation is being rectified by
conducting monthly uncontrolled sampling.
The Silver over-allocation was based on Stream Standards and not having a limit in the
AT and the uncontrolled load was larger than the MAHL.
The Zinc over-allocation was based on Sludge Ceiling. We revised the SIU IUP limit but
that was not enough,thus the increased sampling for 1 year.
• NPDES Permit was renewed and went into effect on October 1, 2021 with expiration
date of Feb 28, 2026
• All Dates on the Division's Database Program Info Sheet are correct
• A copy of our Program Information Sheet is enclosed with corrections.
SIU PERMIT INFORMATION:
CENTURY HOSIERY PERMIT (#0001) INFORMATION:
• Century Hosiery Inc. Permit#0001 was revised November 10, 2022,to reduce the limit
of Zinc from 0.25 mg/L to 0.15 mg/L to address an over-allocation. Although this did not
correct the over-allocation the revised limit remains.
• No name changes at the SIU
• No major process changes at the SIU during 2022
• No SNC violations were noted during 2021

Industrial User Information
Century Hosiery, Inc., (IUP#0001, Knitting and Dyeing)
SNC Information:
Industry was not in SNC for the entirety of 2022
Orders and Schedule Information:
No additional orders or scheduling changes needed
A to C and Construction Information:
No changes to pretreatment system made this year
Missed Data:
No missing data
Enforcement Actions taken by POTW:
No enforcement actions taken or warranted
Other Miscellaneous Information:
None

Chapter 9, PAR Guidance
Pretreatment Performance Summary (PPS)
1. Pretreatment Town Name: Town of Denton
2. "Primary"NPDES Number NCOO 26689
or Non Discharge Permit#if applicable=>
3. PAR Begin Date, please enter 01/01/yyyy 3.=> 1/1/2022
4. PAR End Date, please enter 12/31/yyyy 4.=> 12/31/2022
5. Total number of SIUs, includes CIUs 5.=> 1
6. Number of CIUs 6.=> 0
7. Number of SIUs with no IUP, or with an expired IUP 7.=> 0
8. Number of SIUs not inspected by POTW 8.=> 0
9. Number of SIUs not sampled by POTW 9.=> 0
10. Number of SIUs in SNC due to IUP Limit violations 10.=> 0
11. Number of SIUs in SNC due to Reporting violations 11.=> 0
12. Number of SIUs in SNC due to violation of a Compliance Schedule,CO,AO or similar 12._> 0
13. Number of CIUs in SNC 13.=> 0
14. Number of SIUs included in Public Notice 14.=> 0
15 Total number of SIUs on a compliance schedule, CO,AO or similar 15.=> 0
16. Number of NOVs,NNCs or similar assesed to SIUs 16.=> 0
17. Number of Civil Penalties assessed to SIUs 17.=> 0
18. Number of Criminal Penalties assessed to SIUs 18.=> 0
19. Total Amount of Civil Penalties Collected 19._> $ 0
20. Number of IUs from which penalties collected 20._> 0
Foot Notes: AO Administrative Order IUP Industrial User Pretreatment Permit POTW Publicly Owned Treatment Works
CIU Categorical Industrial User NNC Notice of Non-Compliance SIU Significant Industrial User
CO Consent Order NOV Notice of Violation SNC Significant Non-Compliance
IU Industrial User PAR Pretreatment Annual Report
revised 1/2018: PAR PPS 2018

Pretreatment Annual Report (PAR) PAR covers this calendar year=> 2022
Significant Non-Compliance Report (SNCR) Control Authority=Program=Town Name => Denton
WWTP = Wastewater Treatment Plant, use separate form for each WWTP. WWTP Name => Denton WWTP
SILT= Significant Industrial User NPDES # => NC0026689
SNC = Significant Non-Compliance
A SNCR Form must be submitted with every PAR, please write "None " if you had No SIUs in SNC during calendar year
SNC ? (Yes/No)
IUP Pipe Industry Name Parameter for each 6-month period.
# # or "Reporting" Jan. - June July-Dec.
0001 001 Century Hosiery, Inc. None No No
Attach a copy of the Division's "SIUs in SNC Historical Report" for your POTW's SIUs behind this page .
Is the database correct? Notify the Division of any errors ! Database indicates SNC history for previous years.
EVERY SNC MUST be explained in the Narrative, How was, is, or will it be resolved?
REPEAT SNCs are serious matters that MUST be explained in the Narrative.
Form name: PAR,SNCR,2001
Date Revised: 1/4/2001

•
Pretreatment Annual Report(PAR) Control Authority, Industry
Industrial Data Summary Form (IDSF) WWTP
Name=> Town of Denton Name Century Hosiery
WWTP Name=>)enton W W IP IUP# 0001
Use separate forms for each industry/pipe NPDES#=> NC0026689 Pipe# 001
Enter BDL values as<(value) 1st 6 months,dates=> 1/1/2022 to 6/30/22
2nd 6 months,dates=> 7/1/2022 to 12/31/22
r tow, mga DUD l ammonia
1st b months 'Lnd b months 1st b months -And 6 months 1st b months Lnd 6 months 1st b months And b months
Total#of samples=> 1 1 1 1 1 1 1
* Maximum (mg/1)_> 0.01118 0.0271 15.7 31 32 <5
* or Maximum (lb/d)=>
* or Average(mg/1)_>
* or Average Loading(lb/d)_>
%violations,(chronic SNC is>=66%)_>
%TRC violations, (SNC is>=33 %)=>
(Arsenic - Cadmium cliromllum COD
1st 6 months 2nd 6 months 1st 6 months 2nd 6 months 1st 6 months 2nd 6 months 1st 6 months 2nd 6 months
Total#of samples=> 1 1 1 1
* Maximum (mg/1)_> <0.002 <0.00015 0.015 <0.002
* or Maximum (lb/d)_>
* or Average(mg/1)=>
* or Average Loading(lb/d)_>
%violations,(chronic SNC is>=66%)=>
%TRC violations, (SNC is>=33 %)_>
copper Cyanide -Lead Mercury
1st 6 months -2nd 6 months 1st 6 months 2nd 6 months 1st 6 months 2nd 6 months 1st 6 months 2nd 6 months
Total#of samples=> 1 1 1 1
* Maximum (mg/1)=> 0.011 0 <0.010 0
* or Maximum (Ib/d)_>
* or Average(mg/I)=>
* or Average Loading(lb/d)=>
%violations, (chronic SNC is>=66%)_>
%TRC violations, (SNC is>=33 %)_>
BDL=>Below Detection Limit mg/1=>milligrams per liter
* POTW must enter at least one of these IUP=>Industrial User Permit Ib/d=>pounds per day
four rows, Please indicate how averages were calculated SNC=>Significant Non-Compliance mgd=>million gallons per day
Avg period could be month,Qtr,or 6-month&if BDL, 1/2BDL,or zero values used. TRC=>Technical Review Criteria WWTP=>wastewater treatment plant
Chapter: PAR Guidance File name: RaciffialhatksiteedisleclahafthgatgpctigAB,pages 12, 13, 14 Blank IDSF Form,Copy and use in your PAR Number each set for each IUP pipe-Page I of 2_

Pretreatment Annual Report (PAR) Industry Name Century Hosiery
Industrial Data Summary Form (IDSF) IUP# 0001
Use separate forms for each industry/pipe Pipe# 001
1VtcKei -Neienium - Inver Line
1 st b months kna b months 1st 6 months LW b months 1st 6 months Lnd b months 1st 6 months Lnd 6 months
Total#of samples=> 1 1 1
* Maximum (mg/1)_> <0.0005 0.052 0.033
* or Maximum (lb/d)=>
* or Average(mg/1)=>
* or Average Loading(lb/d)=>
%violations,(chronic SNC is>=66%)_>
%TRC violations, (SNC is>=33%)=>
ptt u11 & crease
1st 6 months -2nd 6 months 1st 6 months 2nd 6 months 1st 6 months 2nd 6 months 1st 6 months 2nd 6 months
Total#of samples=> 1 1 1 1
* Maximum=> 8 7.4 <5.0 <5.0
* or Minimum=>
*
*
%violations,(chronic SNC is>=66%)=>
%TRC violations, (SNC is>=33%)_> N/A
1st 6 months 2nd 6 months 1st 6 months -2nd 6 months 1st 6 months 2nd 6 months 1st 6 months 2nd 6 months
Total#of samples=>
* Maximum (mg/1)_>
* or Maximum (lb/d)_>
* or Average(mg/I)=>
* or Average Loading(1b/d)=>
%violations,(chronic SNC is>=66%)_>
%TRC violations, (SNC is>=33 %)_>
BDL=>Below Detection Limit mg/1=>milligrams per liter
* POTW must enter at least one of these IUP=>Industrial User Permit Ibid=>pounds per day
four rows, Please indicate how averages were calculated SNC=>Significant Non-Compliance mgd=>million gallons per day
Avg period could be month,Qtr,or 6-month&if BDL,1/2BDL,or zero values used. TRC=>Technical Review Criteria WWTP=>wastewater treatment plant
Chapter: PAR Guidance File name: Pt rlfp&lhaki3ee(i iaieti ratItrgi8,t*ctld9i4B,pages 12,13,14 Blank IDSF Form,Copy and use in your PAR Number each set for each IUP pipe-Page '2_ of 2.

Workbook Name : 2022.Denton.HWA.AT.update, Worksheet Name: AT Printed: 1/6/2023,8:35AM
Allocation Table Page 1 of 5
spreadsheet
Headworks last approved: 11/10/16 1)Applicable Values should be entered in the Heavy Bordered cells. Rest of worksheet Is protected,password is
„2„
Allocation Table updated: 11/01/22 2)Formulas are discussed in the Comprehensive Guidance,Chapter 6,Section C.
Permits last modified: 11/01/22 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, Thls Includes pollutant names in columns
AT through BK.
porn.,Denton
NPDES{k> NC0026689
FLOW BOD TSS
Industry Type Renewal Modification Date Permit Limits Permit Limits Permit Limits
IUP INDUSTRY NAMES Permit Pipe of Effective Effective Permit Conc. Load Conc. Load
Count (please listalphebeicly) number number Industry Date Date Expires MGD gal/day mg/I lbs/day mg/I lbs/day
1 Century Hosiery 0001 001 textile 01/01/20 12/31/25 0.0800 80,000 750.00 500.40
2
3 ,
4
5
6
7
8
9
10 -�
Column Totals=> I 0.0800 80,0001 5001 01
Basis=> NPDES Design Design
MAHL from HWA(lbs/day)=> NPDES Permitted Flow=> 0.8000 1434 1788
Uncontrollable Loading(lbs/day)=> 0.4910 848 1089
Total Allowable for Industry(MAIL)(lbs/day)_> 0.3090 587 699
Total Permitted to Industry(lbs/day)=> 0.0800 500 0
MAIL left(lbs/day)=> 0.2290 86 699
Percent Allow.Ind.(MAIL)still available(%)=> 74.1% 14.7% 100.0%
Percent MAHL still available(%)=> 28.6% 6.0% 39.1%
5 Percent MAHL(lbs/day)_> 0.0400 72 89
H W A.AT
Revised:November 2005

Workbook Name : 2022.Denton.HWA.AT.update, Worksheet Name: AT Printed:1/6/2023,8:35AM
Allocation Table Page 2 of 5
Headworks last approved: 11/10/16
Allocation Table updated: 11/01/22
Permits last modified: 11/01/22
POTW=>Denton
NPDESik> NC0026689
Ammonia Arsenic Cadmium Chromium Copper Cyanide
Industry Permit Limits Permit Limits Permit Limits Permit Limits Permit Limits Permit Limits
IUP INDUSTRY NAMES Permit Pipe Conc. Load Conc. Load Conc. Load Conc. Load Conc. Load Conc. Load
Count (please list alphabelicly) number number mg/1 lbs/day mg/1 lbs/day mg/1 lbs/day mg/I lbs/day mg/1 lbs/day mg/1 lbs/day
1 Century Hosiery 0001 001 0.0070 0.0047 0.2000 0.1334 0.2000 0.1334`NIP
2
3
4
5
6
7 ;
8
9 .0. �►
10
Column Totals=> _____L 1 0.00001 0.00471 0.13341 0.13341 I 0.0000
Sludge
Basis=> Design Ceiling Stream Std Stream Std NPDES Stream Std
MAHL from HWA(lbs/day)=> 266.88 0.0458 0.0220 0.2625 0.4786 0.0693
Uncontrollable Loading(lbs/day)=> 102.37 0.0123 0.0041 0,0131 0.1892 0.1679
Total Allowable for Industry(MAIL)(lbs/day)=> 164.51 0.0335 0.0179 0.2494 0.2894 -0.0986
Total Permitted to Industry(lbs/day)=> 0.00 0.0000 0.0047 0.1334 0.1334 0.0000
MAIL left(lbs/day)_> 164.51 0.0335 0.0132 0.1159 0.1560 -0.0986
Percent Allow.Ind.(MAIL)still available(%)=> 100.0% 100.0% 73.9% 46.5% 53.9% 100.0%
Percent MAHL still available(%)=> 61.6% 73.2% 60.2% 44.2% 32.6% -142.4%
5 Percent MAHL(lbs/day)=> 0.0023 0.0011 0.0131 0.0239 0.0035
HWA.AT
Revised:November 2005

•
Workbook Name : 2022.Denton.HWA.AT.update, Worksheet Name: AT Printed: 1/6/2023,8:35 AM
Allocation Table Page 3 of 5
Headworks last approved: 11/10/16
Allocation Table updated: 11/01/22"
Permits last modified: 11/01/22
Pores=> Denton
NPDES#=> NC0026689
Lead Mercury Molybdenum Nickel Selenium Silver
Industry Permit Limits Permit Limits Permit Limits Permit Limits Permit Limits Permit Limits
IUP INDUSTRY NAMES Permit Pipe Conc. Load Conc. Load Conc. Load Conc. Load Conc. Load Conc. Load
Count (plcasc list alphabcticly) number number mg/1 lbs/day mg/1 lbs/day mg/1 lbs/day mg/I lbs/day mg/I lbs/day mg/I lbs/day
1 Century Hosiery 0001 001 0.0200 0.013311 4 ......1k
2
3
4
5
6
7 4
8
9
10 r....i 1
Column Totals=> 1 0.0133, 0.000000 0.0000 0.0000 0.0000 0.0000
Sludge
Basis=> Stream Std Stream Std Ceiling Stream Std Stream Std Stream Std
MARL from HWA(lbs/day)=> 0.1520 0.001652 0.0511 0.1851 0.0430 0.0010
Uncontrollable Loading(lbs/day)_> 0.0205 0.012285 0.0860 0.0205 0.0102
Total Allowable for Industry(MAIL)(lbs/day)=> 0.1315 -0.010633 ####### 0.0991 0.0225 -0.0092
Total Permitted to Industry(lbs/day)=> 0.0133 0.000000 0.0000 0.0000 0.0000 0.0000
MAIL left(lbs/day)=> 0.1182 -0.010633 ####### 0.0991 0.0225 -0.0092
Percent Allow.Ind.(MAIL)still available(%)=> 89.9% 100.0% ####### 100.0% 100.0% 100.0%
Percent MAHL still available(%)=> 77.7% 6:4W/i"221 ####### 53.6% 52.3% -893.1%
5 Percent MAHL(lbs/day)_> 0.0076 0.000083 0.0026 0.0093 0.0021 0.0001
HWA.AT
Revised:November 2005

Workbook Name : 2022.Denton.HWA.AT.update, Worksheet Name: AT Printed: 1/6/2023,8:35AM
Allocation Table Page 4 of 5
Headworks last approved: 11/10/16
Allocation Table updated: 11/01/22
Permits last modified: 11/01/22
parw=>Denton
NPDES#=> NC0026689
Zinc Total Nitrogen Total Phos. hlorobromometh•Ethylhexyl)Phtll e
Industry Permit Limits Permit Limits Permit Limits Permit Limits Permit Limits Permit Limits
IUP INDUSTRY NAMES Permit Pipe Conc. Load Conc. Load Conc. Load Conc. Load Conc. Load Conc. Load
Count t (please list alphabeticly) number number / mg/I lbs/day mg/1 lbs/day mg/1 lbs/day ( mg/I lbs/day mg/I lbs/day mg/1 lbs/day
1 Century Hosiery 0001 001 0.1500 0.1001
2
3
4 s
5
6
7
8
9
10
Column Totals=> I 1 0.1001 0.001 0.001 0.0000 l 0.00001 I 0.0000
Sludge
Basis=> Ceiling Stream Std Stream Std
MAHL from HWA(lbs/day)_> 2.0121
Uncontrollable Loading(lbs/day)_> 0.7608
Total Allowable for Industry(MAIL)(lbs/day)=> 1.2513
Total Permitted to Industry(lbs/day)=> 0.1001 0.00 0.00 0.0000 0.0000 0.0000
MAIL left(lbs/day)=> 1.1512
Percent Allow.Ind.(MAIL)still available(%)=> 92.0% ####### ####### ####### ####### #######
Percent MAHL still available(%)=> 57.2% ####### ####### ####### ####### #######
5 Percent MAHL(lbs/day)_> 0.1006
H W A.AT
Revised:November 2005

Workbook Name : 2022.Denton.HWA.AT.update, Worksheet Name: AT Printed:1/6/2023,8:35 AM
Allocation Table Page 5 of 5
Headworks last approved: 11/10/16
Allocation Table updated: 11/01/22
Permits last modified: 11/01/22
PDTw=>Denton
NPDES#=> NC0026689
f g h I
Industry Permit Limits Permit Limits Permit Limits Permit Limits
IUP INDUSTRY NAMES Permit Pipe Conc. Load Conc. Load Conc. Load Conc. Load
Count (picas°listalphabcticly) number number mg/1 lbs/day mg/1 lbs/day mg/I lbs/day /1 lbs/day
1 Century Hosiery 0001 001
2
3
4 �r ,
5
6
7
8
9
10 ��
Column Totals=> 0.0000 0.00001 , 0.0000 0.0000
Basis=>
MAHL from HWA(lbs/day)_>
Uncontrollable Loading(lbs/day)=>
Total Allowable for Industry(MAIL)(lbs/day)_>
Total Permitted to Industry(lbs/day)_> 0.0000 0.0000 0.0000 0.0000
MAIL left(lbs/day)_>
Percent Allow.Ind.(MAIL)still available(%)=> ####### ####### ####### #######
Percent MAHL still available(%)_> ####### ####### ####### #######
5 Percent MAHL(lbs/day)=>
HWA.AT
Revised:November 2005