NCG030085_2021 DMR_20211014

DAIMLER
Sean Quarry
Sr. Environmental Engineer
Daimler Trucks
1800 North Main Street
Mouat Holly, NC 28120
704,822.7034 Phone
October 13, 2021
NCDEQ - Division of Water Resources
610 East Center Avenue
Suite 301
Mooresville, North Carolina 28115
To whom it may concern:
Please find the enclosed September Stormwater Discharge Outfall (SDO) #001 and #002 forms
for the Daimler Trucks NA, LLC - Mount Holly Truck Manufacturing Plant (TMP). The September
8th stormwater samples were collected at both locations during this monthly event. Analytical
results from the sampling event show an exceedance of Copper and Zinc at SDO #001 and an
exceedance of Zinc at SDO #002. The Facility also had an exceedance for the new permit COD
benchmark at SDO #001.
Daimler remains in Tier 3 at SDO #001 and SDO #002 for Zinc and at SDO #002 for Copper.
The Facility enters Tier 1 for COD and exits Tier 3 at SDO #001 and SDO #002 for TSS and at
SDO #001 for Copper.
Shield will continue to perform monthly sampling per Tier level requirements until instructed to
decrease sampling frequency by Daimler.
Should you have any questions, please contact me at 704-822-7034 or
[e-mail].
Sincerely,
Daimler Trucks NA, LLC
Sean Quarry
Sr. Environmental Engineer
Enclosures — Shield Engineering, Inc. Cover Leffer and DTNA signed DMR forms

SHIELD
October 5, 2021
Mr. Sean Quarry
Daimler Trucks North America, LLC
1800 -North Main Street
Mount Roily, NC 28120
Subject: Monthly Sampling — September 2021
NPDES General Permit No. NCG030000
Daimler Trucks of North America LLC - Mount Holly, North Carolina
Shield Project No. 1140109-08
Dear Mr. Quarry:
Shield Engineering, Inc. (Shield) successfully collected monthly stormwater samples for Stormwater
Discharge Outfalis (SDO) #001 and #002 at the Mount Holly facility for the month of September 2021.
During the September 81 sampling event, ShieId's field measurements of p1l were 7.00 and 7.04 at SDO
#001 and SDO 4002, respectively. The analytical results of the stormwater samples collected during the
qualifying storm event are attached to this cover letter. In addition, the Qualitative Monitoring Report
(QMR) forms and the partially completed Discharge Monitoring Report (DMR) form are attached to this
cover letter. The Qualitative Monitoring Reports note the presence of a faint oil smell at SDO 4001 and
SDO #002. In addition, both SDOs are overgrown with plants and clearing of the areas is recommended.
Analytical results from the sampling event show an exceedance of Copper and Zinc at SDO 400I and an
exceedance of Zinc at SDO #002.
Daimler remains in Tier 3 at SDO 4001 and SDO #002 for Zinc and at SDO # 002 for Copper. The Facility
enters Tier 1 for C.O.D. and exits Tier 3 at SDO #001 and SDO 4002 for TSS and at SDO 4001 for Copper.
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.
Y�
Magdaline �Tza nri
Senior Project Manager
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J �
. Grccnc, EIT
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Attachment: Discharge Monitoring Report — September 2021
Robert L. Griffin, PE
President/CEO
4301 Taggart Creek Road www.shieldengineering.com Telephone [phone]
Charlotte, NC 28208 License No. F-0856

NCDEQ Division of Energy, Mineral and Land Resources
Stormwater Discharge Monitoring Report (DMR) Farm for NCG030000
Metal Fabrication
Click here for instructions
Complete, sign, scan and submit the DMRvia the 5torrnwater NI'DFS Permit Data Monitoring Report UMH1 Upload form within
30 days of receiving sampling results. Mail the original, signed hard copy of the DMR to the appropriate DEMLR itei;ionol Office,
Certificate of Coverage No. NCGO3 00B5 _
Facility Name: Daimler Trucks - Mount Holly -
Person Collecting Samples: TJ Gladden
Laboratory Name: Pace Analytical
Facility County: Gaston
Laboratory Cert. No.: 329
Discharge during this period: U Yes U No (if no, skip to signature and date]
Has your facility implemented mandatory Tier response actions this sample period for any benchmark exceedances? f Yes No
If so, which Tier (1, 11, or 111)?
A copy of this ❑MR has been uploaded electronically via t�)s: etiocs.cirr -r1c. av Forrns 5W-DMR es No
Date Uploaded: 1,)"yR/Z-(
Analytical Monitoring Requirements for Outfalls with Industrial Activities -Benchmarks in (Red)
Parameter
Parameter
Outfall 001
Outfall002
Outfall
outfall
Outfall
Code
N/A
Receiving Stream Class
W5-IV; CA
W5-IV; CA
N/A
Date Sample Collected MM/B0/YYYY
91a12021
9/8/2021
45529
24-Hour Rainfall in inches
0.1
0.1
C0530
TS5 In mg/L (100 or 500)
28 - f
33
pH in standard units (6.0 - 9.0 FW,
00400
6.8-9.5 SW)
7.00
7 04
Copper, total recoverable in mg/L
—
01119
(0.010 FW, 0.0058 SW)
0.0081
0.0078
Lead, total recoverable in mg/ L
01051
(0.075 FW, 0.22 SW)
0.0011
0.0011
Zinc, total recoverable in mg/ L (0.126
01094
FW, 0.095 SW)
0,240
0.140
Chemical Oxygen Demand (COD) in
-
00340
mg/L (1201
230
51
00552 1
Non -Polar Oil & Grease in mg/L (15)
71
C5.0
" Outfalls to Outstanding Resource Waters (ORW), High Quality Waters (HQW], Trout Waters (Tr) and Primary NurseryAreas (PNA)
have a benchmark T55 limit of 50 mg/L. All other water classifications have a benchmark of 10D mg/L
FW (FreshwaterI SW (Saltwater]
Notes (optional): COD exceeded at 5DQ 001. Zinc exceeded at 5DO 001 and 5DD 002.
"I certify by my signature below, under penalty of law, that this document and all attachments were prepared under my direction or supervision in
accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my
inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the Information
submitted is, to the best of my knowl dge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting
false inforrt}atltp, includinkthe pqfAllity of fines and imprisonment for knowing violations."
/V// /L /
Signature !O rmittee or Delegated Au`fFsorized Individual Date
Email Address Phone Number