NC0050342_IWS approval_20220811

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ROY COOPER
Governor
ELIZABETH S. BISER
Secretary
RICHARD E. ROGERS, JR.
Director
City of Winston Salem
Attn: Joel Freeman, Industrial Waste Control Supervisor
2799 Griffith Road
Winston Salem, NC 27103
Transmitted via email to [e-mail]
Subject: Review of Industrial Waste Survey (IWS)
Program: City of Winston Salem
Muddy Creek WWTP (NC0050342) & Archie Elledge WWTP (NC0037834)
Forsyth County
Dear Permittee,
NORTH CAROLINA
Environmental Quality
8/11/2022
The Municipal Unit of the Division of Water Resources has reviewed the Industrial Waste Survey (IWS) for the
City of Winston Salem. The IWS was initially received by the Division on June 30, 2021, followed by more
information and revisions received on April 4, 2022; May 5, 2022; and July 28, 2022. The City's NPDES permit
require proper completion of an IWS. The review indicates that the IWS is adequate and meets the requirements
of 40 CFR 403.8 (f) (2). Please ensure to replace or update POTW's IWS with the approved one.
The City's IWS included 293 industrial, commercial, and institutional (ICI) users and currently has 27 Significant
Industrial Users (SIUs) and 15 industries under Local Permits.
Please remember it is the responsibility of the POTW to continue efforts to ensure that any SIU, as defined by
NCAC 15A 2H .0903(b)(30) (A) through (D), are identified and subsequently added to the City's pretreatment
program. This includes evaluating new IUs before they commence discharge and evaluating existing IUs determined
to be not SIUs that make changes to their process.
Next IWS Due Date: August 10, 2027, unless conditions at the POTW or industrial users change significantly and
thus warrant an earlier submittal. Furthermore, within 180 days of the effective date of any reissued/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 SIUs. Pursuant to 15A NCAC 02H .0907(b), either the Division or the
Permittee may initiate pretreatment program revisions.
Thank you for your continued cooperation with the Pretreatment Program. If you have any questions or comments,
please contact Keyes McGee at [e-mail], or the Unit Supervisor, Michael Montebello, at
michael.montebello @ncdenr. goy.
Sincerely,
Do''c��ulISiiwgeened by: 11^^ h''nn..'''' AA
L— C464531431644 F E...
for Richard E. Rogers. Jr., Director
Division of Water Resources
dy/Winston Salem.50342 & 37834.iws.2022
cc: WSRO/Water Quality - Pretreatment/ Tricia Lowery
Municipal Unit File and Central Files (Laserfiche)