NC0026051_Pretreatment_IUP_Renewal_Letter_20230327

DocuSign Envelope ID: 147C30FA-BCC3-4CA1-ACB9-B37C5BD9C5B5
ROY COOPER _
Governor d C
ELIZABETH S.BISERr
Secretary •E .
RICHARD E.ROGERS,JR. NORTH CAROLINA
Director Environmental Quality
3/27/2023
Via Electronic Mail(aimooregdconc.gov)
Ms. Amy Moore
Laboratory&Compliance Manager
Durham County
5926 NC Hwy 55 East
Durham,NC 27713
Subject: Pretreatment Review of Industrial User Pretreatment Permit Renewal
Program: Durham County
Wastewater Treatment Plant: Triangle WWTP
NPDES#: NCO026051,Durham County
Dear Ms.Moore:
The Municipal Unit of the Division of Water Resources has reviewed the Industrial User Pretreatment Permit
(IUP) renewal submitted by Durham County (NC0026051) for the following Significant Industrial User (SIU).
The submission was received by the Division on March 6th,2023.
SIU# I SIU NAME
DC-075 I Phononic Ell
The review indicates that the IUP 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 Keyes McGee at (919) 707-3626 [email:
ke, e�geegncdenngovI or Octavio Henriquez at [phone] [email: octavio.henriquezgncdenr.gov]
Thank you for your continued support of the Pretreatment Program.
Sincerely,
oih/durco_triangle_�phononic_iup_ren_13 9
DocuSigned by:
Ec: Municipal Unit File
Cheng Zhang,RRO M t6d AblAht b
Central Files (Laserfiche) C464531431644FE...
for Richard E. Rogers,Jr.,Director
Division of Water Resources
North Carolina Department of Environmental Quality I Division of Water Resources
D E Q 512 North Salisbury Street 11611 Mail Service Center I Raleigh,North Carolina 27699-1611
NOR9CARQLINA
ay.y..na�.ra�wrwy\ e 919.707.9000