NC0024945_Pretreatment_IWS_Letter_20201019

DocuSign Envelope ID: B6DOF65C-37B7-47B7-AD2D-8556B8A9CC49
ROY COOPER
Governor
MICHAEL S. REGAN
Secretary
S. DANIEL SMITH NORTH CAROLINA
Director Environmental Quality
10/19/2020
Via Electronic Mail ([e-mail])
Mr. Bill Gintert
Environmental Compliance Manager
Charlotte Water
4222 Westmont Drive
Charlotte, NC 28217
Subject: Pretreatment Review of Industrial Waste Survey (IWS)
Program: Charlotte Water
NPDES Number NCO024945
Mecklenburg County
Dear Mr. Gintert:
The Municipal Unit of the Division of Water Resources has reviewed the Industrial Waste Survey (IWS) for
Charlotte Water. This IWS was received by the Division on December 20, 2019. Additional information was
requested on March 10, 2020 and received on September 9, 2020.
The review indicates that the IWS is adequate and meets the minimum requirements of 40 CFR 403.8 (f) (2).
Proper completion of an Industrial Waste Survey is required by your NPDES permit.
Please remember it is the responsibility of the POTW to continue efforts to ensure that any Significant Industrial
Users (SIUs), as defined by NCAC 15A 2H .0903(b)(30) (A) through (D), are identified and subsequently added
to the pretreatment program. This includes evaluation of new IUs before they commence discharge and evaluation
of existing IUs determined to be not SIUs that make changes to their process.
Next IWS Due Date: Your next updated IWS is due on December 31, 2024 unless conditions at the POTW change
significantly and thus warrant an earlier submittal.
Regardless of this approval action today, within 180 days of the effective date of any reissued NPDES permit (or
any subsequent NPDES permit modification) 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 (SIU's).
Pursuant to 15A NCAC 02H .0907(b) either the Division or the permittee may initiate pretreatment program
revisions. Any additional conditions or requirements provided to the permittee related to pretreatment or
pretreatment program updates must be complied with separately from this approval action.
D E Q�� North Carolina Department of Environmental Quality I Division of Water Resources
512 North Salisbury Street 1 1611 Mail Service Center I Raleigh, North Carolina 27699-1611
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DocuSign Envelope ID: B6DOF65C-37B7-47B7-AD2D-8556B8A9CC49 Page 2 of 2
Charlotte Water
Industrial Waste Survey
If you have any questions or comments, please contact Michael Montebello at [phone] [email:
[e-mail]]. Thank you for your continued cooperation with the Pretreatment Program.
Sincerely,
C464531431644FE...
for S. Daniel Smith, Director
Division of Water Resources
ksl/cw.iws.005
Ec: Municipal Unit File
Wes Bell, MRO
Central Files (Laserfische)