NC0024945_Pretreatment_IUP_Modification_Letter_20231220

North Carolina Department of Environmental Quality Division of Water Resources
512 North Salisbury Street 1611 Mail Service Center Raleigh, North Carolina 27699-1611
919.707.9000

Via Electronic Mail ([e-mail])

Mr. Bill Gintert
Environmental Compliance Manager
Charlotte Water
4222 Westmont Drive
Charlotte, NC 28217

Subject: Pretreatment Review of Industrial User Pretreatment Permit Modification
Program: Charlotte Water
Wastewater Treatment Plant: Irwin Creek WWTP
NPDES #: NC0024945, Mecklenburg County

Dear Mr. Gintert:

The Municipal Unit of the Division of Water Resources has reviewed the Industrial User Pretreatment Permit
(IUP) Modification submitted by Charlotte Water for the following Significant Industrial User (SIU). The
submission was received by the Division on December 1st, 2023.

IUP # SIU NAME
1024 Liquid Environmental Solutions of Georgia, LLC

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:
[e-mail]] or Keyes McGee at [phone] [email: [e-mail]]. Thank
you for your continued support of the Pretreatment Program.

oih/cw_irwin_liquid_iup_mod_171
Ec: Municipal Unit File
Wes Bell, MRO
Central Files (Laserfiche)
Sincerely,

Michael J. Montebello, NPDES Branch Chief
Division of Water Resources

DocuSign Envelope ID: 3752EAFB-A841-4CFE-A2B2-19941167C26D
12/20/2023