NCG030085_DMR_20200609

Stormwater Discharge Monitoring Report
for North Carolina Division of Energy, Mineral and Land Resources General Permit No. NCG030000
Date submitted 619r2020
CERTIFICATE OF COVERAGE NO. NCG03 0 0 8
FACILITY NAME Daimler Trucks -Mount Holly
COUNTY Gaston
PERSON COLLECTING SAMPLES TJ Gladden /Shield Engineering Inc
LABORATORY Shealy Env Services Inc Lab Cert. # 329
Comments on sample collection or analysis:
There is an exceedance of zinc at SDO 002
Part A: Stormwater Benchmarks and Monitoring Results
SAMPLE COLLECTION YEAR 2020 _
SAMPLE PERIOD FJ Jan -June ❑ July -Dec
or E Monthly' May (month)
x- DISCHARGING TO CLASS ❑ORW ❑HQW []Trout ❑PNA
[ ❑zero -flow ❑Water Supply ❑SA
JUN 16 ZUZO ❑■!Other
CEN 1 F?F',L FILES PLEASE REMEMBER TO SIGN ON PAGES 2 AND/OR 3 4
DWR SECTION
❑ No discharge this period?'
Outfall No.
Date Sample
Collected'
(mo/dd/yr)
24-hour rainfall
amount,
Inches3
Total Suspended Solids
pH,
Standard units
Total Copper
Total Lead
Total Zinc
Non -Polar O&G/
Total Petroleum
Hydrocarbons
Total Toxic
Organics5
Benchmarks
_
-
100 mg/L or 50 mg/L4
6.0 — 9.0
0.010 mg/L
0.075 mg/L
0.126 mg/L
15 mg/L
1 mg/L
Parameter Code
-
46529
COS30
00400
01119
01051
01094
00S52
78141
SDO #001
5/27/2020
1.21
10
7.46
0.0028
0.00032
0.083
3.4
N/A
SDO #002
5/27/2020
1.21
70
7.22
0.0055
0.00059
0.140
-5.0
NJA
' Monthly sampling (instead of semi-annual) must begin with the second consecutive benchmark exceedance for the same parameter at the same outfall.
Z For sampling periods with no discharge at any single outfall, you must still submit this discharge monitoring report with a checkmark here.
'The 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.
° See General Permit, Section B, Table 1 to identify the especially sensitive receiving water classifications where the more protective benchmark applies.
5 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: 11/1/2018-05/31/2021 SWU 24S, last revised 11/1/2018
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 belief, 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."
.1G^C %1uf44l�
Name (Print name)
A,i &7c., arc
Title (Pri tit)e)
/W�) 6 p1?040
Sign (e Date
Note: Results must be reported in numerical format. Do not report Below Detection Limit, BDL, <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 me/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-I No discharoe this period?z
Outfall No.
Date Sample Collected'
(mo/dd/yr)
24-hour rainfall amount,
Inches'
New Motor Oil or
Hydraulic Oil Usage
Non -Polar O&G/ Total
Petroleum Hydrocarbons
Total Suspended
Solids
Benchmarks
-
-
-
15 mg/L
100 mg/L or 50 mg/O
Parameter Code
-
46524
NCOIL
00552
C0530
Footnotes from Part A also apply to Part B
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.
Permit Date: 11/1/2018-05/31/2021 SWU-245, last revised 11/1/2018
Page 2 of 3

FOR PART A 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 DEMLR REGIONAL OFFICE? YES ❑ NO ❑
REGIONAL OFFICE CONTACT NAME:
Mail an original copy of this DMR, including all "No Discharge" reports, within 30 days of receipt of the lab results (or at end of monitoring period in the
case of "No Discharge" reports) to:
Division of Water Quality
Attn: DWO 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 there V"gnificant penalties for submitting false information, including the possibility of fines and imprisonment for knowing violations."
Signature of
Permit Date:11/1/2018-05/31/2021
Date
SWU-245, last revised 11/1/2018
Page 3 of 3

ENGINEERINLG,l N D
June 9, 2020
Mr. Sean Quarry
Daimler Trucks North America, LLC
1800 North Main Street
Mount Holly, NC 28120
Subject: Monthly Stormwater Sampling — May 2020
NPDES General Permit No. NCG030000
Daimler Trucks of North America LLC - Mount Holly, North Carolina
Shield Project No. 1140109-07
Dear Mr. Quarry:
Shield Engineering, Inc. (Shield) successfully collected monthly stormwater samples for Stormwatcr Discharge
Outfalls (SDO) #001 and #002 at the Mount Holly facility for the month of May 2020. During the May 271
sampling event, Shield's field measurements of pH were 7.46 and 7.22, respectively, at SDO #001 and SDO #002.
In addition to collection of samples, Shield performed Qualitative Monitoring at SDO #001 and #002. During the
Qualitative Monitoring, some erosion was observed at SDO #001, caused by the overflow of stormwater alongside
the concrete pipe. This will continue to be monitored by Shield during the next stormwater sampling. 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 the May 27's sampling event show an exceedance for Zinc at SDO #002.
Daimler remains in Tier 3 at SDO #001 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.
i
Magdaline ��7annts
Senior Project Manager
Melinda M. Gree e, EIT
Senior E neer
Rob4ert I.. riffnn, P.
President/CEO
ATTACHMENTS
Stormwater DMR, Qualitative Monitoring Report, Analytical Results
4301 Taggart Creek Road
Charlotte, NC 28206
www.shieldengineering.com
C&, ,
''�1/,r , S�EC'II
Telephone [phone]
Fax [phone]
I