NCG030004 DMR SW

~` Duff -Norton
3c.. 7u;G
October 31, 2014
Central Files
Division of Water Quality
1617 Mail Service Center
Raleigh, NC 27699-1617
Re: Reporting for Duff -Norton Stormwater Permitr:NCG-03-0b 4b -
Dear Sirs,
NOV 0 5 2014
CENTRAL {BILES
SWR SECTION
Attached please find the Tier 2 Response Plan Analytical Report and Quantitative Monitoring
for the 2"d Semiannual Stormwater Event of 2014 for our facility. Based on findings in this
monitoring report, the March 2014 exceedence for test point #2, zinc, 0.02 mg/I over
benchmark and September 2014 exceedence for test point #2, zinc, 0.014 mg/I over
benchmark was corrected with the current reading of 0.020 mg/I. Based on this finding and
no other indications of zinc contaminate, we consider this Tier 2 Response Plan satisfied.
If any further information is required, please contact me.
Sincerely,
Paul M. Vinay
Facilities Manager
Duff -Norton

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