NC0024147_Pretreatment_IUP_Modification_Letter_20221004

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ROY COOPER
Governor
ELIZABETH S. BISER
Secretary
RICHARD E. ROGERS, JR.
Director
NORTH CAROLINA
Environmental Quality
10/4/2022
Via Electronic Mail ([e-mail])
Sarah Jordan
Pretreatment Coordinator
City of Sanford
P.O. Box 3729
Sanford, NC 27331
Subject:
Pretreatment Review of Industrial User Pretreatment Permit Modifications
Program: City of Sanford
Wastewater Treatment Plant: City of Sanford Big Buffalo Creek WWTP
NPDES #: NC0024147
Lee County
Dear Sarah Jordan:
The Municipal Unit of the Division of Water Resources has reviewed the Industrial User Pretreatment
Permit (IUP) renewals submitted by the City of Sanford (NC0024147) for the following Significant
Industrial Users (Sills). The submission was received by the Division on 07/26/2022.
SIU #
000033
000040
SIU NAME
Caterpillar Paint & Plating Operations
Caterpillar, Inc.
1
The review indicates that the IUPs are adequate and meet 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.
Regardless of approval action today, 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.
AROLINA '
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NORTH C
North Carolina Department of Environmental Quality I Division of Water Resources
512 North Salisbury Street 11611 Mail Service Center I Raleigh, North Carolina 27699-1611
919.707.9000

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If you have any questions or comments, please contact Keyes McGee at [phone] [email:
[e-mail]] or Octavio Henriquez at [phone] [email:
[e-mail]] Thank you for your continued support of the Pretreatment Program.
oih/sdf_buffalo_cat_iup_mod_61
Ec: Municipal Unit File
Cheng Zhang, RRO
Central Files (Laserfiche)
D_E
NORTH CAROLINA
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Sincerely,
DocuSigned by:
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for Richard E. Rogers, Jr., Director
Division of Water Resources
North Carolina Department of Environmental Quality I Division of Water Resources
512 North Salisbury Street 11611 Mail Service Center I Raleigh, North Carolina 27699-1611
919.707.9000