NC0021211_Pretreatment_IUP_Modification_Letter_20230706

DocuSign Envelope ID: D53BAA4E-D738-44E9-A9BC-D34EB6717886
ROY COOPER cd
Governor
ELIZABETH S.BISERr
Secretary •E .
RICHARD E.ROGERS,JR. NORTH CAROLINA
Director Environmental Quality
7/6/2023
Via Electronic Mail(ssmith9cityofgraham.com)
Ms. Shelby Smith
Pretreatment Coordinator
City of Graham
P.O. Box 357
Graham,NC 27253
Subject: Pretreatment Review of Industrial User Pretreatment Permit Modification
Program: City of Graham
Wastewater Treatment Plant: City of Graham WWTP
NPDES#: NCO021211,Alamance County
Dear Ms. Smith:
The Municipal Unit of the Division of Water Resources has reviewed the Industrial User Pretreatment Permit
(IUP) modification submitted by the City of Graham for the following Significant Industrial User (SIU). The
submission was received by the Division on June 27th,2023.
IUP# SIU NAME
2001 Thunderbird Metals East
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 Octavio Henriquez at (919) 707-3662 [email:
octavio.henriquez(cr�,deq.nc.gov] or Keyes McGee at [phone] [email: keyes.mcgee&deq.nc.gov]. Thank
you for your continued support of the Pretreatment Program.
Sincerely,
oih/grm graham thunderbird_iup_mod_046
DocuSigned by:
Ec: Municipal Unit File -I ' � �
Tricia Lowery,WSRO N(6d
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
NORT9CARQLINA
ay.y..nw1m.wrwy\ /� 919.707.9000