NCG030537_Relief from Monthly Monitoring_20210923

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ROY COOPER
Governor
srtL
ELIZABETH S. BISER
Secretary
BRIAN WRENN
Director
NORTH CAROLINA
Environmental Quality
September 23, 2021
DENSO Manufacturing North Carolina Inc.
Attention: John Brown
470 Crawford Road
Statesville, North Carolina 28625
Subject: Relief from Monthly Monitoring
Stormwater Permit # NCG030537
DENSO Manufacturing North Carolina Inc.
Iredell County
Dear Mr. Brown:
We are in receipt of your August 13, 2021 email requesting relief from monthly monitoring at the
DENSO Manufacturing North Carolina Inc. Statesville plant. Based on past site inspections, including
July 29, 2021, and email correspondence regarding copper, zinc and implementation of a TSS
abatement plan, the facility is in compliance with the tiered response actions and other conditions of the
NCG030537 Permit. Therefore, the Division is granting regulatory relief from the Tier responses. Upon
receipt of this letter, the subject facility may resume the permit specified semi-annual analytical
monitoring for the remainder of the current permit term which expires on June 30, 2026. This decision
applies only to the copper and zinc benchmarks. A benchmark exceedance of any other parameter listed
in your permit will trigger the tiered response actions as described in the general permit.
You must notify this office, in writing, within five business days if you become aware of any
other significant source of copper or zinc at your facility that has the potential to be exposed to
stormwater. The relief granted in this letter is contingent upon the current industrial practices and the
TSS abatement plan at the DENSO Manufacturing North Carolina Inc. Statesville plant. Please retain
and append this letter to your Stormwater Pollution Prevention Plan (SPPP) or permit. If you have
any questions or comments concerning this letter, please contact me or James Moore at 704-663-
1699.
Sincerely,
IEZD�oc�uSigned�.,bry, A'A
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Zahid S. Khan, CPM, CPESC, CPSWQ
Regional Engineer
Land Quality Section
cc: Stormwater Laserfiche
PLQNorth Carolina Department of Environmental Quality I Division of Energy, Mineral and Land Resources
EMooresville Regional Office 1 610 East Center Avenue, Suite 3011 Mooresville, North Carolina 28115
704-663-1699
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