NC0026051_Pretreatment_IUP_Drop_Letter_20210201

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ROY COOPER
Governor
MICHAEL S. REGAN
Secretary
S. DANIEL SMITH
Director
Via Electronic Mail ([e-mail])
Ms. Amy Moore
Laboratory & Compliance Manager
Durham County
5926 NC HWY 55 E
Durham, NC 27713
NORTH CAROLINA
Environmental Quality
2/1/2021
Subject: Pretreatment Review of Industrial User Permit Drop Request
Program: Durham County
WWTP: Durham County Triangle WWTP, NPDES #: NCO026051
Durham County
Dear Ms. Moore:
The Municipal Unit of the Division of Water Resources has reviewed the request to drop the following industry
from the list of significant industrial users (SIUs) for Durham County, Durham County Triangle WWTP (NPDES
#: NCO026051). The drop request was received by the Division on December 21, 2020.
SIU # SIU NAME
DC-084 Novan, Inc. 11
The review indicates that the SIU no longer discharges process wastewater and thus no longer meets the definition
of a SIU. Therefore, the SIU drop request is approved based on compliance with 15 NCAC 2H .0907(b) and
.0903(b)(33). The SIU list which is part of your approved pretreatment program is hereby modified.
Regardless of this approval action today, within 180 days of the effective date of any reissued NPDES permit (or
any subsequent NPDES permit modification) 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 (SM's).
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 Michael Montebello at (919) 707 -3624 [email:
[e-mail]]. Thank you for your continued support of the Pretreatment Program.
ksl/durhamcounty_iupdrop_128
Ec: Municipal Unit File
Cheng Zhang, RRO
Central Files (Laserfische)
Sincerely,
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for S. Daniel Smith, Director
Division of Water Resources
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� North Carolina Department of Environmental Quality I Division of Water Resources
512 North Salisbury Street 1 1611 Mail Service Center I Raleigh, North Carolina 27699-1611
NORTH CAROLINA i
919.707.9000