NCG200517_COMPLETE FILE - HISTORICAL_20190425

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STORMWATER DIVISION CODING SHEET
NCG PERMITS
PERMIT NO.
/V
DOC TYPE
-HISTORICAL FILE
❑ MONITORING REPORTS
DOC DATE
g o? ti o y a .�
YYYYMMDD

CATAWBA VALLEY
ENGINEERING S TESTING
PO Box 747
Hickory, NC 28603
308 15th St. SE
Suite 2
Hickory, NC 28602
828 578 9972 0
829322180i F
NC Firm No. C-3833
SC Firm No. 5201
Geotechnical Engineering
Environmental Services
CMT/Special Inspections
April 17, 2019
Mr. James Moore
North Carolina Department of Environmental Quality
Mooresville Regional Office
610 East Center Avenue, Suite 301
Mooresville, North Carolina 28115
[e-mail]
Re: Tier 3 Response - Storm Water Discharge Monitoring
Colt Recycling Southeast, LLC
816 13th Street, N.E.
Hickory, Catawba County, North Carolina
Project Number: 19-325
Dear Mr. Moore,
On behalf of Colt Recycling Southeast, LLC (Colt), Catawba Valley Engineering
& Testing, P.C. (CVET) is providing this Tier 3 Notification regarding the Colt
facility located at 816 13th Street, N.E, Hickory, North Carolina. The Colt
facility is currently permitted under North Carolina Division of Energy,
Mineral, and Land Resources (NCDEMLR) General Permit No. NCG200000 and
Certificate of Coverage No. NCG200517, issued on February 2, 2015 and
expiring on December 31, 2019.
Based on laboratory analytical results for storm water outfall samples
collected on April 5, 2019, four cumulative benchmark exceedances have
been detected for Total Zinc at Outfall 001. Outfall locations are defined in
the Storm Water Pollution Prevention Plan (Excel Civil & Environmental
Associates, PLLC, September 15, 2016). Based on this exceedance, a Tier 3
Response has been triggered for Total Zinc at Outfal1001.
In response to these findings and at the request of Colt, CVET is in the process
of performing a Source Assessment (SA) at the Colt facility. SA samples were
collected on April 5, 2019 and are currently undergoing review. The primary
objective of the SA is to identify source areas that may be contributing to
elevated metal concentrations in storm water discharge at the subject
property.
Following review of the SA analytical results and consideration of site specific
conditions, CVET and Colt will work together to adapt the storm water
monitoring program in an effort to reduce metallic compound concentrations
that are being discharged to the outfalls.

Sincerely, _
CATAWBA VALLEY ENGINEERING AND TESTING, P.C. --Y.
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Nathan S. Simmons, P.G.
Environmental Scientist
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