NCG030085_MONITORING INFO_20190801

STORMWATER DIVISION CODING SHEET
NCG PERMITS
PERMIT NO.
/VC-C, 0 3 � U "
DOC TYPE
❑ HISTORICAL FILE
[� MONITORING REPORTS
DOC DATE
0
YYYYMMDD

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July 8, 2019
Mr. Sean Quarry
Daimler "Trucks North America, LLC
1800 North Main Street
Mount 1-lolly, NC 28120
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CENT�L FILES
;DWR SEOTIOPI
Subject: Monthly Stormwater Sampling —June 2019
NPDES General Permit No. NCG030000
Daimler Trucks of North America LLC - Mount Holly, North Carolina
Shield Project No.1140109-06
Dear Mr. Quarry:
Shield Engineering, Inc. (Shield) successfully collected monthly Stormwater samples for Stormwater Discharge
Outfalls (SDO) #001 and #002 at the Mount Holly facility for the month of June 2019. During the June 12'h
sampling event, Shield's field measurements of pH were 8.2 and 7.8, respectively, at SDO #001 and SDO #002.
In addition to collection of samples, Shield performed Qualitative Monitoring at SDO #001 and 4002. A
partially completed discharge monitoring report (DMR) is attached, as well as the analytical results and
Qualitative Monitoring Report forms. The person designated to act as the permittee by Daimler Trucks — Mount
Holly facility should sign all "Red" sections of the DMR. The signed DMR form should then be mailed to the
regulatory agency Central Piles.
Results from this sampling event show that the Mount Holly facility has exceeded benchmarks as follows:
• SOO #001 (6/12/2019) — Zinc — 0.230 mg/l, (Benchmark 0.126 mg/1)
• SOO 4002 (6/12/2019) —Zinc — 0.180 mg/L (Benchmark 0.126 mg/1)
Daimler remains in Tier 3 at SDO 4001 and SDO #002 for Zinc and Copper. Shield will continue to perform
monthly sampling per Tier 2 requirements until instructed to decrease sampling frequency by Daimler. Shield
greatly appreciates the opportunity to provide environmental services to Daimler Trucks, North America. if you
have any questions in reference to this document or require further information, please feel free to contact either
of the undersigned at [phone].
Respectfully,
SHIELD ENGINEERING, INC.
13 a(ndo�HuggiI"f
Staff Engineer
A
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ineer
ATTACHMENTS
rj
Robert . 4m,P.E.
President/CEO
Stormwater DMR, Qualitative Monitoring Report, Analytical Results
4301 Taggart Creek Road
Charlotte, NC 28200 vmw.shieldengineering.wrn
Telephone 704. 394, 6913
Fax 704,394.6968