NC0026051_Pretreatment_IUP_Drop_Letter_20240110

DocuSign Envelope ID:5D4C6890-DEFE-4C27-80FE-2BDD15DD2F7E
ROY COOPER
Governor
ELIZABETH S.BISEP, =�*
Secretary
RICHARD E.ROGERS,,JR. NORTH CAROLINA
Director Environmental Quality
Via Electronic Mail([e-mail]) 1/10/2024
Amy Moore
Laboratory&Compliance Manager
Durham County
5926 NC Hwy 55 East
Durham,NC 27713
Subject: Pretreatment Review of Industrial User Pretreatment Permit Drop
Program: Durham County
Wastewater Treatment Plant: Triangle WWTP
NPDES#: NCO026051,Durham County
Dear Amy Moore:
The Municipal Unit of the Division of Water Resources has reviewed the Industrial User Pretreatment Permit(IUP)
drop request submitted by Durham County for the following Significant Industrial User(SILT). The submission was
received by the Division on 12/18/2023.
SIU# I SIU NAME
DC-114 1 MP Pharma Services, Inc.
The review indicates the IUP has been dropped by Durham County's Pretreatment Program and the documentation
meets the minimum requirements of 15A NCAC 2H .0916 and 40 CFR 403.8(f)(1)(iii). The allocation table,
maintained in the Division's database,has been updated accordingly.
Within 180 days of the effective date of any reissued or 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
Significant Industrial Users (SIUs). Pursuant to 15A NCAC 2H .0907(b) either the Division or the permittee may
initiate pretreatment program revisions.
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.
Thank you for your continued cooperation with the Pretreatment Program. If you have any questions or comments,
please contact Natalie Gorensek [email: natalie.gorensekkdeq.nc.gov] at(919) 707-3660 or Octavio Henriquez at
[phone] [email: octavio.henriquesndeq.nc.gov].
Sincerely,
nhg/durco_triangle_mppharma_iup_drop_13 9
DocuSigned by:
Ec: Municipal Unit File ECheng Zhang,RRO �..k. w�
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Central Files(Laserfiche) � 644FE
Michael J. Montebello, NPDES Branch Chief
Division of Water Resources
�INA North Carolina Department of Environmental Quality I Division of Water Resources
NORTH C 512 North Salisbury Street 1 1611 Mail Service Center I Raleigh,North Carolina 27699-1611
Ogrt4neirtotEnHranmenWOual� 919.707.9000