WQ0007521_Approval_20230210

DocuSign Envelope ID: 1 D9278C0-E61A-4CF1-8C34-4B6560675F0E
ROY COOPER
Governor
ELIZABETH S. BISER
Secretary
RICHARD E. ROGERS, JR. NORTH CAROLINA
Director Environmental Quality
2/10/2023
Via Electronic Mail (jshell@,north-wilkesboro.com)
Justin Shell
Pretreatment Coordinator
PO Box 218
North Wilkesboro, NC 28659
Subject: Industrial Waste Survey (IWS) Approval
Program: Town of North Wilkesboro
NPDES #: NC0020761
Wilkes County
Dear Permittee,
The Municipal Unit of the Division of Water Resources has reviewed the Industrial Waste Survey (IWS) for the
Town of North Wilkesboro WWTP, working under the NPDES Permit No NC0020761. The IWS was initially
received by the Division on 09/14/2022, followed by more information and revisions received on 01/11/2023.
The City's IWS included 99 industrial, commercial, and institutional (ICI) users and currently has 2
significant industrial users (SIUs) under Industrial User Permits (IUPs) and zero industrial users (IUs) under
Local Permits. The City's NPDES permits 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
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), is identified and subsequently added to the City's
pretreatment program. This includes evaluating new IUs before they commence discharge and evaluating existing
lUs determined to be not SIUs that make changes to their process.
Next IWS Due Date: February 8, 2028, 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., updated IWS, HWA, LTMP, or documentation of the update 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 myself at [e-mail] or Keyes
McGee at [e-mail],
Sincerely''f,S"i-'Igned byy:M A .'' `
ilki
C464531431644FE...
for Richard E. Rogers Jr., Director
Division of Water Resources
cc with attachments:
anw/NWilkesboro.IWS.2022
Municipal Unit File
Tricia Lowery, WSRO
Municipal Unit File and Central Files (Laserfiche)