NCS000040 Zinc Exceedance Letter - 2014

H RL40TTE
PIPE and FOUNDRY COMPANY
P.O. box 35430 • I elephone /041332-2647
CHARLO I f E, NOR I H CAROLINA 28235
Foundry Fax No. 332-4581
July 10, 2014
NCDENR - DEMLR
Attn: Zahid Khan DEN ��
610 East Center Ave., Suite 301 Sr G WA Eo ��IAC17'y
Mooresville, NC 28115I�NG
704.663.1699
RE: Charlotte Pipe & Foundry Co. - Mecklenburg County, NC
NPDES Stormwater Permit NCS000040
SWO04 Zinc Benchmark Exceedance
Dear Mr. Khan:
In follow-up to a phone conversation with Ken Pickle, NCDEMLR Stormwater -
Raleigh on Thursday, July 10, 2014, I am submitting this written notification that
we have exceeded the benchmark value for Zinc from SWO04 on four occasions
since our delay of tiers has expired.
We have implemented several significant BMPs over the past several years to
reduce concentrations of regulated parameters in our stormwater. These include,
but are not limited to:
• Installation of a Waste Storage Building to cover our waste piles;
• Installation of sump pumps in our scrap storage area and charging system
pits which pump rain water to our on-site water treatment plant for
recycling;
• Placement of covers on outside baghouse collection bins to prevent run-off
to the storm drains;
• Routine sweeping of facility grounds;
• Vacuuming of multiple storm drains;
• Weekly 5S departmental cleaning of outside areas;
• Monthly inspections of material storage areas; and
• Quarterly visual and housekeeping inspections of the site.

Mr. Khan
Page 2
We would like to work with you to establish a path forward. Please contact me
at 704.348.bb13 to schedule a site visit or if you need any additional information.
Thank you for your assistance.
Sincerely,
Jenny Pappalardo
Charlotte Pipe and Foundry Co.
Environmental Engineer
cc: Ken Pickle
1612 Mail Service Center
Raleigh, NC 27699-1612
[phone]