NCG030039_MONITORING INFO_20190708

STORMWATER DIVISION CODING SHEET
NCG PERMITS
PERMIT NO.
DOC TYPE.
❑ HISTORICAL FILE
1� MONITORING REPORTS
DOC DATE
❑ 0 )Q IO
YYYYMMDD

r0Oiy-i 1)J_
Semi-annual Stormwater Discharge Monitoring Report
for North Carolina Division of Water Quality General Permit No. NCG030000
Date submitted 7/8/19
CERTIFICATE OF COVERAGE NO. NCG
FACILITYNAME Daimler Trucks-MountHally
PERSON COLLECTING SAMPLES Brandon Huggins/Shield Engineering Inc.
LABORATORY: Shealy Env Services Inc. Lab Cert. # 329
Comments on sample collection or analysis: Benchmark exceedance for
Zinc at SDO #001 and SDO #002
Part A: Stormwater Benchmarks and Monitoring Results
SAMPLE COLLECTION YEAR 2019
SAMPLE PERIOD ❑ Jan -June ❑ July -Dec
or ® Monthly' June
DISCHARGING TO CLASS ❑ORW ❑HQW -]Trout ❑PNA
❑Zero -flow ❑Water Supply ❑SA
®Other
PLEASE REMEMBER TO SIGN ON PAGES 2 AND/OR 3 -)
❑No discharge this period?'
Outfall No.
Date Sample
Collected'
(mo/dd/yr)
24-hour rainfall
amount,
Inches'
Total Suspended Solids
PHA
Standard units
CopperOrganics5
Lead
Zinc
Non -Polar O&G/
Total Petroleum
Hydrocarbons
Total Toxic
Benchmarks
100 mg/L or 50 mg/L
6.0 - 9.0
0.020 mg/L
0.075 mg/L
0.126 mg/L
15 mg/L
1 mg/L
SD0#001
6/12/19
1.26
19
8.2
0.0058
0.0011
0.236
3.9
NA
SDO#002
6/12/19
1.26
46
7.8
0.0083
0.0026
0.180
3.9
NA
' Monthly sampling (instead of semi-annual) must begin with the second consecutive benchmark exceedance for the same parameter at the same outran.
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.
s 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: 11/1/2012-10/31/2017 SWU-245, last revised 10/25/2012
Page 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."
Jpq[ .1LaS'94Xe-7
Name (Print name)
l,719 , f /)14 a
Title (Print title)
(Signature) (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, "<XXtheymust be reported in the format, mg/L"/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.
n 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'of3 ---

Note. If you report a sample value in excess of the benchmark, you must implement Tier 3, Tier Z or Tier 3 responses. See General Permit text.
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 DWQ REGIONAL OFFICE? YES ❑ NO ❑
REGIONAL OFFICE CONTACT NAME:
Mail an original and one ropy of this DMA including aN "No Discharae" reports within 30 days of receipt of the lab results for at end of monitoring 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 there are significant penalties for submitting false information, including the possibility of fines and imprisonment for knowing violations."
(Signature of
(Date
Permit Date: 11/1/2012-10/31/2017 SWU-245, last revised 10/25/2012
Page 3 of 3
---

DAIMLER
Sean Quarry
Sr. Environmental Engineer
Daimler fnwks
1800 North Main Street
Mount Holly, NC 28120
704.822.7034 Phone
July 22, 2019
Division of Water Quality
Attn: Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
To whom it may concern:
Please find the enclosed June Stormwater Discharge Outfall (SDO) #001 and #002 analytical
results for the Daimler Trucks NA, LLC - Mount Holly Truck Manufacturing Plant (TMP). The
stormwater samples were collected on June 12, 2019. Results from this sampling event show an
exceedance of the following parameters at or above the corresponding benchmarks:
• SDO #001 (06-12-2019) - Zinc - 0.230 mg/L (Benchmark 0.126 mg/L)
• SDO #002 (06-12-2019) -Zinc - 0.180 mg/L (Benchmark 0.126 mg/L)
Daimler remains in Tier 3 at SDO #001 and SDO #002 for Zinc. 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
Enclosures - Shield Engineering, Inc. Cover Letter and DTNA signed DMR forms