NC0026051_Pretreatment_IUP_Modification_Letter_20240920

Docusign Envelope ID: EEA7EOB8-D181-4EEC-8E98-57DOA47F5FO2
ROY COOPER -
Governor
MARY PENNY KELLEY *
Secretary ,QUAM O'
RICHARD E.ROGERS,JR. NORTH CAROLINA
Director Environmental Quality
9/20/2024
Via Electronic Mail(aimooregdconc.gov)
Ms. Amy Moore
Laboratory and Compliance Manager
Durham County
5926 NC Hwy 55 East
Durham,NC 27713
Subject: Pretreatment Review of Industrial User Pretreatment Permit Modification
Program: Durham County
Wastewater Treatment Plant: Triangle Creek WWTP
NPDES#: NC0026051,Durham County
Dear Ms. Moore:
The Municipal Unit of the Division of Water Resources has reviewed the new Industrial User Pretreatment Permit
(IUP)modification submitted by Durham County for the following Significant Industrial User(SILT).The Division
received the submission on June 7t'', 2023.
IUP# SIU NAME
DC-075 Phononic
The review indicates that the]UP modification is adequate and 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.
If you have any questions or comments, please contact Octavio Henriquez at (919) 707-3662 [email:
octavio.henriquezkdeq.nc.gov1. Thank you for your continued support of the Pretreatment Program.
Sincerely,
oih/durco triangle_phonortic_iup_mod_146 Signed by:
Ec: Municipal Unit File Ayr u, �VY,Slbvu
Donald Smith,RRO
E6B6D66F2457475...
Central Files(Laserfiche)
Karen Preston,Municipal Unit Supervisor
Division of Water Resources
DE Q�� North Carolina Department of Environmental Quality I Division of Water Resources
_ 512 North Salisbury Street 1 1617 Mail Service Center I Raleigh,North Carolina 27699-1617
NORTH CARDLINA
o�..mm i m 919.707.9000