NC0089109_Approval_20190417

ROY COOPER
Governor
MICHAEL S. REGAN
Secretary
LINDA CULPEPPER
Director
Mr. Robert Williamson, Plant Manager
American Zinc Products, LLC
484 Hicks Grove Road
Mooresboro, North Carolina 28114
Dear Mr. Williamson:
NORTH CAROLINA
Environmental Quality
April 18, 2019
Subject: Final NPDES Permit
Permit NCO089109
American Zinc Products, LLC
Rutherford County
Grade II PCWPCS
Division personnel have reviewed and approved your application for a renewal of the subject permit.
Accordingly, we are forwarding the attached NPDES permit. This permit is issued pursuant to the
requirements of North Carolina General Statute 143-215.1 and the Memorandum of Agreement
between North Carolina and the U.S. Environmental Protection Agency dated October 15, 2007 (or
as subsequently amended).
No major changes were made to the draft permit sent to you on January 29, 2019.
The final permit maintains the following significant changes identified in the letter sent on
January 29, 2019:
• The flow limit was increased to 0.98 MGD
• The requirement for fish tissue monitoring was added to the permit to address a comment
from the Regional Office.
• The requirement for pollutant scan was added to the permit to address a comment from the
Regional Office.
• The limits for Total Cadmium were recalculated (reduced) based on the new flow estimate
and the recent update to the North Carolina water quality standards. A cadmium limit
compliance schedule was added to the permit.
• The limits for Total Chromium, Total Lead, and Total Fluoride were removed from the
permit based on the results of the Reasonable Potential Analysis.
• Quarterly monitoring for Hexavalent Chromium was added to the permit based on the
review of the effluent data.
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The Division is unable to grant your request for changing the Fish Tissue Monitoring Special
Condition, the Division used the standard language that applies to all the facilities required to monitor
fish tissue.
If any parts, measurement frequencies or sampling requirements contained in this permit are
unacceptable to you, you have the right to an adjudicatory hearing upon written request within thirty
(30) days following receipt of this letter. This request must be in the form of a written petition,
conforming to Chapter 150B of the North Carolina General Statutes, and filed with the Office of
Administrative Hearings (6714 Mail Service Center, Raleigh, North Carolina 27699-6714). Unless
such demand is made, this decision shall be final and binding.
Please note that this permit is not transferable except after notice to the Division. The Division may
require modification or revocation and reissuance of the permit. This permit does not affect the legal
requirements to obtain other permits which may be required by the Division of Water Resources or
any other Federal, State, or Local governmental regulations.
If you have any questions concerning this permit, please contact Sergei Chernikov at [phone]
or via email at [e-mail].
Sincerely,
Linda Culpepper, Director
Division of Water Resources, NCDEQ
Hardcopy: NPDES Files
Central Files
E -copy: DWR/Asheville Regional Office/Water Quality
DWR/Aquatic Toxicology Branch
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