NC0026051_Industrial User_20210726

DocuSign Envelope ID: OEED7F98-E9AC-48E3-959D-36B1588469AE
ROY COOPER
Governor
ELIZABETH S. BISER
Secretary
S. DANIEL SMITH
Director
Durham County
Attn: Amy Moore, Laboratory and Compliance Manager
5926 NC Hwy 55 East
Durham, NC 27713
Transmitted via email to [e-mail]
Subject: Pretreatment Review of Industrial User Permit Modification
Program: Durham County
WWTP: Durham County Triangle WWTP - NPDES #:NC0026051, 12 MGD
Durham County
Dear Amy Moore:
The Municipal Unit of the Division of Water Resources has reviewed the Industrial User Permit (IUP)
modification submitted by Durham County for the following Significant Industrial User (SIU).
NORTH CAROLINA
Environmental Quality
7/26/2021
IUP #
SIU NAME
DC-040
Cree RTP
The IUP modification was received by the Division on June 28, 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). The IUP was modified to reflect the new flow meter at Pipe 012 in Part IIL2.
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,
cnAD,oc'u,'Siigned byy:A `', i'q,'' `
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C464531431644FE...
for S. Daniel Smith, Director
Division of Water Resources
/durhamcounty_iup_131
Ec: Cheng Zhang, RRO
Central Files (Laserfische) and Municipal Unit File
LD_E
NORTH CAROLINA
Department of Environmental Duali�
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