NC0023884_Industrial User_20210726

DocuSign Envelope ID: 5035B058-418C-4903-B18C-4C416C310678
ROY COOPER
Governor
ELIZABETH S. BISER
Secretary
S. DANIEL SMITH
Director
NORTH CAROLINA
Environmental Quality
7/26/2021
City of Salisbury, Salisbury -Rowan Utilities
Attn: Jeffery Greer, Pretreatment Program Coordinator
1915 Grubb Ferry Road
Salisbury, NC 28144
Transmitted via email to igree(&,salisburync.gov
Subject: Pretreatment Review of Industrial User Permit Renewal
Program: City of Salisbury
WWTP: Town Creek WWTT, NPDES #: NC0023884
Rowan County
Dear Jeffery Greer:
The Municipal Unit of the Division of Water Resources has reviewed the Industrial User Pretreatment Permit
(IUP) renewal submitted by Salisbury -Rowan Utilities for the following Significant Industrial User (SIU).
IUP #
SIU NAME — SIC, CFR
0026
Hitachi Metals NC, Ltd — 3264, 471 J
The IUP renewal application was received by the Division on June 2, 2021. The review indicates that the
IUP is adequate and meets the minimum requirements of 15A NCAC 2H .0905 - .0916 and 40 CFR
403.8(f)(1)(iii). Some of the IUP modifications with this renewal included changing chromium's laboratory
detection level from 10 ug/1 to 5 ug/1, adding molybdenum as an IU monitored parameter, and including
the derivation of the production -based limits in the IUP synopsis.
Regardless of this approval action today, 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 regardless of timeframe.
Federal and State pretreatment regulations require the local delegated pretreatment program to effectively
control and document the wastewater discharge from SIUs to the POTW. It is the POTW's responsibility
to ensure that these objectives are consistently met.
Thank you for your continued support of the Pretreatment Program. If you have any questions or comments,
please contact Diana Yitbarek [[e-mail]], the Pretreatment Coordinator Keyes McGee
[[e-mail]], or the Unit Supervisor at [[e-mail]].
Sincerely,
e��11 AAD,ocuSigned byy:,� A' • �'a� A
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for S. Daniel Smith, Director
Division of Water Resources
dy/salisbury.iup.ren.095.hitachi
Ec: Wes Bell, Mooresville Regional Office
Central Files (Laserfische) and Municipal Unit File
North Carolina Department of Environmental Quality I Division of Water Resources
512 North Salisbury Street 11617 Mail Service Center I Raleigh, North Carolina 27699-1617
919.707.9000
NORTH CAROLINA
Department of Environmental ouar�