NCG030085_Monitoring Report_20220321

DAIMLER
March 16, 2021
NCDEQ - Division of Water Resources
610 East Center Avenue
Suite 301
Mooresville, North Carolina 28115
To whom it may concern:
Michael Kedenburg
Environmental Engineer
Daimler Trucks
1800 North Main Street
Mount Holly, NC 28120
704.822.7034 Phone
5 '
t.3
O5
"F
Please find the enclosed February Stormwater Discharge Outfall (SDO) #001 and #002 forms for
the Daimler Trucks NA, LLC - Mount Holly Truck Manufacturing Plant (TMP). The stormwater
samples were collected on February 7, 2022. Results from this sampling event show an
exceedance of the following parameter(s) at or above the corresponding benchmark:
• SDO #001 (02-7-2022) - Zinc - 0.150 mg/L (Benchmark 0.126 mg/L)
• SDO #002 (02-7-2022) - Zinc - 0.170 mg/L (Benchmark 0.126 mg/L)
• SDO #002 (02-7-2022) - Copper - 0.013 mg/L (Benchmark 0.010 mg/L)
• SDO #002 (02-7-2022) - TSS - 110 mg/L (Benchmark 100 mg/L)
Magdaline Tzannis of Shield Engineering provided an email notification of the TSS exceedance at
SDO #002 to Zahid Khan of the North Carolina Department of Environmental Quality on March
8, 2022.
On February 15th, Daimler received regulatory relief from the Tier 3 responses at SDO #001 and
SDO #002 for Zinc and at SDO #002 for Cooper. Daimler remains in Tier 2 for COD at SDO
#001 and enters Tier 1 for TSS at SDO #002. Shield will continue to perform monthly sampling
per Tier 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 Truc s NA, LLC
V �Y 17
Michael Kedenb rg
Environmental Engineer
Enclosures - DTNA signed DMR forms (2 copies)

SHIEND
iN9.�1 NEERI NG
March 3, 2022
Mr. Sean Quarry
Daimler Trucks North America, LLC
1800 North Main Street
Mount Holly, NC 28120
Subject: Stormwater Sampling — February 2022
NPDES General Permit No. NCG030000
Daimler Trucks of North America LLC - Mount IIolly, North Carolina
Shield Project No. 1140109-09
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 February 2022.
During the February 7' sampling event, Shield's field measurements of pH were 7.5 at both SDO #001 and
SDO #002. 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. Analytical
results from the sampling event show an exceedance of Zinc at SDO #001 and an exceedance of Zinc,
Copper, and TSS at SDO 4002.
During the February 7" sampling event, Shield sampled 3 additional locations around SDO #001 and
analyzed for COD (Chemical Oxygen Demand). The sampling locations and COD values are shown on the
attached site map and are described below:
1. Sample name: " SDO 001 A". Sample pulled from high risk catch basin - before it entered the filter -
located immediately "upstream" from the pipe that leads to the SDO #001 sampling location.
Analytical result: <20 mg/L.
2. Sample name: " SDO 001 B". Sample pulled upstream from where SDO #001 joins the drainage
ditch. Analytical result: <20 mg/L.
3. Sample name: " SDO 001 C". Sample pulled from detention pond of SDO #001, right before it
leaves the Facility's property. Analytical result: <20 mg/L.
The COD measured at SDO #001 was 37 mg/L. Since the COD that entered the catch basin was BDL
(Below Detection Limit), then either the filter that is installed in the catch basin or the pipe that leads to the
outfall are contributing to an increase in COD. Shield recommends that the Facility continue to inspect this
drain on a regular basis and change out the filter insert as necessary. The Facility may want to consider
cleaning out the pipe that leads to the outfall in order to remove any organics that may have built up.
On February 15, 2022, Daimler received regulatory relief from the Tier 3 responses at SDO #001 and SDO
#002 for Zinc and at SDO #002 for Copper. The Facility remains in Tier 2 for COD at SDO #001 and enters
Tier 1 for TSS at SDO #002. Shield will resume the permit -specified quarterly analytical monitoring for
the remainder of the current permit term which expires on June 30, 2026. However, if the Facility has four
exceedances on any of the parameters for which Tier 3 relief was not granted, then monthly sampling will
resume for all parameters.
4301 Taggart Creek Road www.shieldengineering.com Telephone [phone]
Charlotte, NC 28208 License No. F-0856

Stormwater Sampling — February 2022
DTNA — Mount Holly, NC
Shield Project No. 1140109-09
March 3, 2021
Page 2
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.
Magdaline zannis
Senior Project Manager
4ngelin. reene
Sineer
ATTACHMENTS:
Discharge Monitoring Report — February 2022
Letter from NC DEQ granting Tier 3 Relief
Map with COD sampling points
tvc
Robert L. Griffin, PE
President/CEO
EN WELD
/ ENGINEERING

X
NCDEQ Division of Energy, Mineral and Land Resources t
Stormwater Discharge Monitoring Report (DMR) Form for NCG030000 //,,`
Metal Fabrication
Click here for instructions
on,
Complete, sign, scan and submit the DMR via the Stormwater NPDES Permit Data Monitoring Report (DMR) Upload form within
30 days of receiving sampling results. Mail the original, signed hard copy of the DMR to the appropriate DEMLR Regional Office.
Certificate of Coverage No. NCG03 0085
Person Collecting Samples: Magdalene Tzannis /Shield Engineering Inc
Facility Name: Daimler Trucks - Mount Holly
Laboratory Name: Pace Analytical
Facility County: Gaston
Laboratory Cert. No.: 329
Discharge during this period:0 Yes 11 No (if no, skip to signature and date)
Has your facility implemented mandatory Tier response actions this sample period for any benchmark exceedances? Yes Q No
If so, which Tier (I, II, or III)?
A copy of this DMR hap en uploaded electronically via littos://edocs.deq,iic.;;uv/Forms SW-DMR o Yes El No
Date Uploaded: I -/Zz-
Analytical Monitoring Requirements for Outfalls with Industrial Activities — Benchmarks in (Red)
Parameter
Code
Parameter
Outfall001
Outfall002
Outfall
Outfall
Outfall
N/A
Receiving Stream Class
WS-IV; CA
WS-IV; CA
N/A
Date Sample Collected MM/DD/YYYY
2/7/2022
2/7/2022
46529
24-Hour Rainfall in inches
0.39
0.39
C0530
TSS in mg/L (100 or 50*)
43
110
00400
pH in standard units (6.0-9.0 FW,
7.5
7.5
6.8-8.5 SW
01119
Copper, total recoverable in mg/L
0.010 FW, 0.0058 SW)
0.0073
0.013
01051
Lead, total recoverable in mg/ L
0.075 FW, 0.22 SW)
0.0016
0.0033
01094
Zinc, total recoverable in mg/ L (0.126
FW, 0.095 SW)
0.150
0.170
Chemical Oxygen Demand (COD) in
00340
mg/L(120)
37
46
00552
Non -Polar Oil & Grease in mg/L (15)
<5.0
<5.0
Outfalls to Outstanding Resource Waters (ORW), High Quality Waters (HQW), Trout Waters (Tr) and Primary Nursery Areas (PNA)
have a benchmark TSS limit of 50 mg/L. All other water classifications have a benchmark of 100 mg/L
FW (Freshwater) (Saltwater)
Notes (optional). Benchmark values exceeded at SDO #001 for Zn & at SDO #002 for TSS, Cu, Zn. f
"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 bet of my knowledge and ief, true, accurate, and complete. I am aware that there are significant penalties for submitting
false informatio ding the pos ' y es and imprisonment for knowing violations."
Signature of Peprtiit�ee or Delegated Aythorized Individual
Email
Date
_god -PLC- A000
Phone Number

NCDEQ Division of Energy, Mineral and Land Resources
Stormwater Discharge Monitoring Report (DMR) Form for NCG030000
Metal Fabrication
Click here for instructions
Complete, sign, scan and submit the DMR via the Stormwater NPDES Permit Data Monitoring Report (DMR) Upload form within
30 days of receiving sampling results. Mail the original, signed hard copy of the DMR to the appropriate DEMLR Regional Office.
Certificate of Coverage No. NCG03 0085
Person Collecting Samples: Magdaline Tzannis /Shield Engineering Inc
Facility Name: Daimler Trucks - Mount Holly
Laboratory Name: Pace Analytical
Facility County: Gaston
Laboratory Cert. No.: 329
Discharge during this period: ✓ Yes 0 No (if no, skip to signature and date)
Has your facility implemented mandatory Tier response actions this sample period for any benchmark exceedances? Yes ✓ No
If so, which Tier (I, II, or III)?
A copy of this DMR has b en uploaded electronically via httos://edocs.deg.nc.gov/FormsISW-DMR Q Yes No
Date Uploaded:
Analytical Monitoring Requirements for Outfalls with Industrial Activities — Benchmarks in (Red)
Parameter
Parameter
Outfall001
Outfall002
Outfall
Outfall
Outfall
Code
N/A
Receiving Stream Class
WS-IV; CA
WS-IV; CA
N/A
Date Sample Collected MM/DD/YYYY
2/7/2022
2/7/2022
46529
24-Hour Rainfall in inches
0.39
0.39
C0530
TSS in mg/L (100 or 50*)
43
110
PH in standard units (6.0 — 9.0 FW,
00400
6.8-8.5 SW)
7.5
7.5
Copper, total recoverable in mg/L
01119
(0.010 FW, 0.0058 SW)
0.0073
0.013
Lead, total recoverable in mg/ L
01051
(0.075 FW, 0.22 SW)
0.0016
0.0033
Zinc, total recoverable in mg/ L(0.126
_
01094
FW, 0.095 SW)
0.150
0.170
Chemical Oxygen Demand (COD) in
00340
mg/L (120)
37
46
00552
Non -Polar Oil & Grease in mg/L (15)
<5.0
<5.0
* Outfalls to Outstanding Resource Waters (ORW), High Quality Waters (HQW), Trout Waters (Tr) and Primary Nursery Areas (PNA)
have a benchmark TSS limit of 50 mg/L. All other water classifications have a benchmark of 100 mg/L
FW (Freshwater) SW (Saltwater)
Notes (optional): Benchmark values exceeded at SDO #001 for Zn & at SDO #002 for TSS, Cu, Zn. j
"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 be my knowle d belief, true, accyrate, and complete. I am aware that there are significant penalties for submitting
false information ing the po y of fines and imgpKonment for knowing violations."
/.21W
Signature of P mittee or Delegated 4uthogized Individual Date
Email
0 � zz -70X
Phone Number __