NC0050342_Pretreatment_IUP_Modification_Letter_20231024

North Carolina Department of Environmental Quality Division of Water Resources
512 North Salisbury Street 1611 Mail Service Center Raleigh, North Carolina 27699-1611
919.707.9000

Via Electronic Mail ([e-mail])

Mr. Joel Freeman
Industrial Waste Control Supervisor
City of Winston-Salem
2799 Griffith Road
Winston-Salem, NC 27103

Subject: Pretreatment Review of Industrial User Pretreatment Permit Modification
Program: City of Winston-Salem
Wastewater Treatment Plant: Muddy Creek WWTP
NPDES #: NC0050342, Forsyth County

Dear Mr. Freeman:

The Municipal Unit of the Division of Water Resources has reviewed the Industrial User Pretreatment Permit
(IUP) modification submitted by the City of Winston-Salem for the following Significant Industrial User (SIU).
The submission was received by the Division on October 13th, 2023.

SIU # SIU NAME
3041 WestRock CP, LLC

The review indicates that the IUP is adequate and meets the minimum requirements of 15A NCAC 2H .0916 and
40 CFR 403.8(f)(1)(iii). The allocation table, maintained in the Division’s database, has been updated accordingly.

Within 180 days of the effective date of any reissued or modified NPDES permit the permittee would be required
to submit to the Division a written technical evaluation of the need to revise local limits (i.e., an updated IWS, or
documentation of why one is not needed). This action may include revising, updating, or adding to the list of
Significant Industrial Users (SIUs). Pursuant to 15A NCAC 2H .0907(b) either the Division or the permittee may
initiate pretreatment program revisions.

Federal and State pretreatment regulations require the local delegated pretreatment program to effectively control
and document the discharge of wastewater from Significant/Categorical Industrial Users to the POTW. It is the
POTW’s responsibility to ensure that these objectives are consistently met.

If you have any questions or comments, please contact Octavio Henriquez at [phone] [email:
[e-mail]] or Keyes McGee at [phone] [email: [e-mail]]. Thank
you for your continued support of the Pretreatment Program.

oih/ws_muddy_westrock_iup_mod_100
Ec: Municipal Unit File
Jenny Graznak, WSRO
Central Files (Laserfiche)
Sincerely,

for Richard E. Rogers, Jr., Director
Division of Water Resources
DocuSign Envelope ID: A50762CF-4CD6-4A79-B4F4-1ACC13D8158E
10/24/2023