NCG030085_MONITORING INFO_20190603

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STORMWATER DIVISION CODING SHEET
NCG PERMITS
PERMIT NO.
DOC TYPE
0 HISTORICAL FILE
BWONITORING REPORTS
D06 DATE
❑ d U / b � 0 3
YYYYMMDD

DAIMLER
May 17, 2019
North Carolina Department of Environmental Quality
Division of Water Quality
610 East Center Avenue, Suite 301
Mooresville, North Carolina 28115
To whom it may concern:
Sean Quarry
Sr. Environmental Engineer
Daimler Trucks
1800 Forth Main Street
Mount Holly, NC 28120
704.822.7034 Phone
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JUN 3 2019
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Please find the enclosed April Stormwater Discharge Outfall (SDO) #001 and #002 analytical
results for the Daimler Trucks NA, LLC (Daimler) - Mount holly Truck Manufacturing Plant (TMP).
The stormwater samples were collected on April 12, 2019. Results from this sampling event
show an exceedance of the following parameters at or above the corresponding benchmarks:
• SDO #001 (04-12-2019) - Zinc - 0.180 mg/L (Benchmark 0.126 mg/L)
• SDO #002 (04-12-2019) - Copper- 0.024 mg/L (Benchmark 0.010 mg/L)
• SDO #002 (04-12-2019) -Zinc - 0.220 mg/L (Benchmark 0.126 mg/L)
• SDO #002 (04-12-2019) - TSS -140 mg/L (Benchmark 100 mg/L)
Note that the analytical report received from the laboratory indicated that Copper was detected
in the method blank samples; however, the concentrations detected remained below the limit of
quantitation. Daimler remains in Tier 3 at SDO #001 and SDO #002 for Zinc and Copper. The
TSS exceedance at SDO #002 places Daimler in Tier 1. Shield will continue to perform monthly
sampling per Tier 2 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
Cc: NCDEQ Central Files
Enclosures

44WonlrwiLD
ENGINEERING, INC.
May 7, 2019
Mr. Sean Quarry
Daimler Trucks North America, LLC
1800 North Main Street
Mount Holly, NC 28120
SUN
3 2�19
Subject: Monthly Stormwater Sampling — April 2019
NPDES General Permit No. NCG030000
Daimler Trucks of North America LLC - Mount Holly, North Carolina
Shield Project No. 1140109-06
Dear Mr. Quarry:
N01?�,� Offi_
Le
Shield Engineering, Inc. (Shield) successfully collected monthly Stormwater samples for Stormwater Discharge
Outfalls (SDO) 4001 and 4002 at the Mount !-golly facility for the month of April 2019. During the April 12`h
sampling event, Shield's field measurements of pll were 7.2 and 7.6, respectively, at SDO #001 and SDO #002.
In addition to collection of samples, Shield performed Qualitative Monitoring at SDO #001 and #002. 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 Files.
Results from this sampling event show that the Mount Holly facility has exceeded benchmarks as follows:
• SDO #001 (4/12/2019) — Zinc — 0.180 mg/L (Benchmark 0.126 mg/l)
• SDO #002 (4/1.2/201.9) — Copper— 0.024 mg/L (Benchmark 0.010 mg/I)
• SDO #002 (4/12/2019) —Zinc — 0.220 mglL (Benchmark 0.126 mg/1)
• SDO #002 (4/12/2019) — TSS — 140 mg/L (Benchmark 100 mg/L)
Note that the analytical report received from the laboratory indicated that Copper was detected in the method
blank samples, however the concentration detected remained below the limit of quantitation. Daimler remains in
Tier 3 at SDO #001 and SDO #002 for Zinc and Copper. The TSS exceedance at SDO #002 places Daimler in
Tier 1. 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.
Melinda . Greene, FIT
Senior Engineer
1
f4'
Robert L. Griffin, P.E.
President/CEO
4301 Taggad Creak Road Telephone 704.394,6913
Chadotte, NC 20208 www.shieldengineedng.com Fax 704.394,6968

Semi-annual Stormwater Discharge Monitoring Report
for North Carolina Division of Water Quality General Permit No. NCG030000
Date submitted 5/7/19
CERTIFICATE OF COVERAGE N0. NCG 0b 0 �� SAMPLE COLLECTION YEAR 2019
FACILITY NAME _Daimler _Trucks —Mount Holly SAMPLE PERIOD ❑ Jan -June ❑ July -Dec
PERSON COLLECTING SAMPLES Brandon Huggins/Shield Engineering Inc. or ® Monthly' April
LABORATORY: Shealy Env Services Inc. Lab Cert. # 329 DISCHARGING TO CLASS ❑ORW ❑HCtW ❑Trout ❑PNA
Comments on sample collection or analysis: Benchmark exceedance for _ _ ❑Zero -flow ❑Water Supply ❑SA
TSS Copper and Zinc at SDO #002 and Zinc at SDO #001; Copper detected; ®Other
by lab in method blank
PLEASE REMEMBER TO SIGN ON PAGES 2 AND/OR 3 4
G.�
Part A: Stormwater Benchmarks and Monitoring Results
❑No discharge this perrod?Z
Outfall No.
Date Sample
Collected'
(mo/dd/yr)
24rainfall
amount,
Inches3
'
Total Suspended Solids
` pH,
Standard units
Copper
Lead
Zinc
Non-Polar O&G/hour
Total Petroleum
Hydrocarbons
Total Toxic
Organicss
Benchmarks ==>
-
-
100 mg/L or 50 mg/L
6.0 -- 9.0
0.010 mg/L
0.075 mg/L
0.126 mg/L
15 mg/L
1 mg/L
SDO#001
4/12/19
1.0
38
7.2
0.0083
0.002
0.180
5.9
NA
SDO#002
4/12/19
1.0
140
7.6
O.D24
0.006
0.220
4.5
NA
' Monthly sampling (instead of semi-annual) must begin with the second consecutive benchmark exceedance for the same parameter at the same outfall.
2 For sampling periods with no discharge at any single outfall, you must still submit this discharge monitoring report with a checkmark here.
3The total precipitation must be recorded using data from an on -site rain gauge. Unattended sites may be eligible for a waiver of the rain gauge requirement.
4 See General Permit, Table 3 identifying the especially sensitive receiving water classifications where the more protective benchmark applies.
' Total Toxic Organics sampling is applicable only for those facilities which perform metal finishing operations, manufacture semiconductors, manufacture
electronic crystals, or manufacture cathode ray tubes. For purposes of this permit the definition of Total Toxic Organics is that definition contained in the EPA
Effluent Guidelines for the facility subject to the requirement to sample (for metal finishing use the definition as found in 40 CFR 433.11; for semiconductor
manufacture use the definition as found in 40 CFR 469.12; for electronic crystal manufacture use the definition as found in 40 CFR 469.22; and for cathode ray
tube manufacture use the definition found in 40 CFR 469.31).
Permit Date: 11/l/2012-10/31/2017 SWU-245, last revised 10/25/2012
Page 1 of 3

Facilities that incorporate a solvent management plan into the Stormwater Pollution Prevention Plan may so certify, and the requirement for TTO monitoring
may be waived. The solvent management plan shall include a list of the total toxic organic compounds used and the other elements listed in the General
Permit. For those facilities electing to employ the TTO monitoring waiver, the discharger shall sign the following certification statement:
"Based upon my inquiry of the person or persons directly responsible for managing compliance with the permit monitoring requirement for total toxic organics
(TTO), I certify that to the best of my knowledge and betief, no dumping of concentrated toxic organics into the stormwater or areas which are exposed to rainfall or
stormwater runoff has occurred since filing the last discharge monitoring report. I further certify that this facility is implementing the all the provisions of the
solvent management plan included in the Stormwater Pollution Prevention Plan."
-Tcin e 2-,. SG.c-se ,j
Name (Print name)
Title (Prin 'tle)
(Signa re) (Date)
Note: Results must be reported in numerical format. Do not report Below Detection Limit, SDL, <PQL, Non -detect, ND, or other similar non -numerical
format. When results are below the applicable limits, they must be reported in the format, "<XX_mg L`_'� where XX is the numerical value of the detection
limit, reporting limit, etc. in mg/L.
Note: If you report a sample value in excess of the benchmark, you must Implement Tier 1, Tier 2, or Tier 3 responses. See General Permit text.
Part B: Vehicle Maintenance Area Monitoring Results: only for facilities averaging > 55 gal of new oil per month.
F] No discharge this period?2
Outfall No.
Date Sample
Collected'
(mo/dd/yr)
24-hour rainfall
amount,
Inches'
Non -polar O&G/TPH by
EPA 1664 (SGT-HEM)
Total Suspended Solids
pH
Benchmarks =_ >
_
15 mg/L
100 mg/L or 50 mg/L"
6.0 -- 9.0 SU
Footnotes from Part A also apply to this Part B
See General Permit text, Table 5, identifying the especially sensitive receiving water classifications where the more protective benchmark applies.
Permit Date: 11/1/2012-10/31/2017 SWU-245, last revised 10/25/2012
Page 2 of 3

Note: If you report a sample value in excess of the benchmark, you must implement Tier 1, Tier 2, or Tier 3 responses. See General Permit text.
FOR PART AND PART B MONITORING RESULTS:
• A BENCHMARK EXCEEDANCE TRIGGERS TIER 1 REQUIREMENTS. SEE PERMIT PART II SECTION B.
• 2 EXCEEDANCES IN A ROW FOR THE SAME PARAMETER AT THE SAME OUTFALL TRIGGER TIER 2 REQUIREMENTS. SEE PERMIT PART II SECTION B.
• TIER 3: HAS YOUR FACILITY HAD 4 OR MORE BENCHMARK EXCEEDENCES FOR THE SAME PARAMETER AT ANY ONE OUTFALL? YES ❑ NO ❑
IF YES, HAVE YOU CONTACTED THE DWQ REGIONAL OFFICE? YES ❑ NO ❑
REGIONAL OFFICE CONTACT NAME:
Mail an origlnol and one copy of this DMR including all "No Discharge" reports, within 30 days of receipt of the lab results (or at end of monitorin_q period
in the case of "No Discharge" reports) to:
Division of Water Quality
Attn: DWQ Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699--1617
YOU MUST SIGN THIS CERTIFICATION FOR ANY INFORMATION REPORTED:
"I certify, 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 knowledge and belief, true, accurate, and complete. I
am aware that thAe are significant penalties for submitting false information, including the possibility of fines and imprisonment for knowing violations."
(Signature
-5-hzbi
(Date)
Permit Date: 11/l/2012-10/31/2017 SWU-245, last revised 10/25/2012
Page 3 of 3