NCG030130_Monitoring Report_20210830

SHIELD
ENGINEERING
August 10, 2021
Mr. Ryan Pennington
Gastonia Components and Logistics
Daimler Trucks North America, LLC
1400 Tulip Drive
Gastonia, NC 28052
Subject: Stormwater Sampling — July 2021
NPDES General Permit No. NCGO30000 - CoC No. NCGO30130
Daimler Trucks, Gastonia Components and Logistics, LLC
1400 Tulip Drive Gastonia, North Carolina
Shield Project No. 1140099-09
Dear Mr. Pennington:
Shield Engineering, Inc. (Shield) successfully collected the 3' Quarter 2021 stormwater samples for
Stormwater Discharge Outfall (SDO) #001 at the Daimler Trucks Gastonia facility during the month of
July 2021. During the July 8t6 sampling event, Shield's measurement for pH was 8.00 at SDO #001. Some
foam was observed in the stormwater discharge at SDO #001 on July 81. The Qualitative Monitoring Report
and a partially completed Discharge Monitoring Report (DMR) form are attached to this cover letter. In
addition, the analytical results for the stormwater samples collected during the qualifying storm events are
attached to this cover letter. Results from the July 81 sampling event show an exceedance of Copper at
SDO #001.
The rain event on July 8th did not produce enough rain in order to collect the stormwater samples for
Stormwater Discharge Outfalls (SDO) #002 & #003. Shield will continue to monitor daily weather
conditions and continue coordination of appropriate staff and resources to collect stormwater samples at
these outfalls, for the 3'" quarter 2021 (July — September 2021).
Shield greatly appreciates the opportunity to provide environmental services to Daimler Trucks of 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,
SHIE EN INEERING, INC.
Magdaline Tzannis
Senior Project Manager
Melinda M. Greene, EIT
Senior Engineer
Robert L. Griffin, PE
President/CEO
Attachments: Stormwater DMR, Qualitative Monitoring Report, Analytical Results
4301 Taggart Creek Road www.shieldenglneering.com Telephone [phone]
Charlotte, NC 28208 License No. F-0856

NCOEQ Division of Energy, Mineral and Land Resources
AUG 3 0 2021 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 Permh iota MPnitorinR Report fDMRI Upload form within
30 days of receiving sampling results. Mail the original, signed hard copy of the DMR to the appropriate DEMLR Reeional Olfice
Certificate of Coverage No. N0303 0130
Person Collecting Samples: TJ Gladden
Facility Name: Daimler Trucks - Gastonia
Laboratory Name: Pace Analytical
Facility County: Gaston
Laboratory Cert. No.: 329
Discharge during this period;
+ Yes
No (7f no, skip to signature and date)
Has your facility Implemented mandatory Tier response actions this sample Period for any benchmark exceedances7 Yes + No
If so, which Tier (I, 11, or III)?
A copy of this DMR has been uploaded electronically via httasl/edocs deo.nc,aw/Forms/SW-DMR Ld Yes 12 No
Date Uploaded: 8 aG aDa-
Analytical Monitoring Requirements for Outfalls with Industrial Activities — Benchmarks in fno,it
Parameter
Code
Parameter
Outfall 001
Outfa11002
Outfall 003
Outfall
Outfall
N/A
Receiving Stream Class
C
C
C
N/A
Date Sample Collected MM/DD/YYYY
07/08/2021
No Flow
No Flow
46529
24-Hour Rainfall in Inches
0.23
C0530
TSS In mg/L (100 w So*)
31
00400
PH in standard units (6.0 — 9.0 FIN,
8.0
6.8-8.5 SW)
01119
Copper, total recoverable in mg/L
0.010 FIN, 0.0058 SW)
0.016
01051
Lead, total recoverable In mg/ L
0.07S FIN, 0.22 S
0.0011
01094
Zinc, total recoverable in mg/ L (0.126
FIN, 0.095 SIN)
0.0046
00340
Chemical Oxygen Demand (COD) in
m L(120)
45
00552
r
Non -Polar Oil &Grease in mg/L(15)
s5.o
Outtalk to Outstanding Resource Waters (ORW), High Quality Waters (HQW), Trout Waters (Tr) and Primary Nursery Areas (PNA)
haves benchmark TS5 limit of 50 mg/L. All other water classlficadom have a benchmark of 100 mg/L
FIN (Freshwater) SIN (Saltwater)
Notes (optional): Benchmark exceedance for Copper (Outfall Dail.
"I certify by my signature below, under penalty of law, thatthis 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 an 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 Informyn, including the possibility of fines and Imprisonment for knowing violations."
of Permittee or Delegated Authorized Individual
[e-mail]
Email Address
210 2
Date
704-868-5760
Phone Number

Z^
E'nvfronmCental
Quality 411, t �
Stormwater Discharge Outfall (SDO) 19 <�
O��
Qualitative Monitoring Report
For guidance on filling out thisform, please visit https://deq.nc.gov/about/divisions/energy-mineral-land-resoui2es/
nudes-stomiwater-gps
Permit No.: N/C/ / / / / / / /1, or Certificate of Coverage No.: N/C/G/
Facility Name: Va,"mike - 6466M.f,,
County: 6-25 kit Phone No.
Inspector:
Date of Inspection: ima l
Time of Inspection: UT 00
Total Event Precipitation (inches): 0. 23 ;L4,
All permits require qualitative monitoring to be performed during a "measurable storm event."
I A "measurable storm event" is a storm event that results in an actual discharge from the permitted site
outfall. The previous measurable storm event must have been at least 72 hours prior. The 72-hour storm
interval does not apply if the permittee is able to document that a shorter interval is representative for
local storm events during the sampling period, and the penmittee obtains approval from the local DEMLR
LRegional office.
By this signature, I certify that this report is accurate and complete to the best of my knowledge:
(Signature of Pemtittee or Designee)
1. Outfall Description:
Outfall No. 601 Structure (pipe, ditch, etc.): PiiEs
Receiving Stream:
Describe the industrial activities that occur within the outtall drainage area:
Page] of 2
SWU-242. Last mudificd 06 01rOI8

2. Color: Describe the color of the c�arge using basic colors (red, brown, blue, etc.) and tint
_
(light, medium, dark) as descriptors: Ar f#* R
3. Odor: Describe ny distinct odors that the discharge may have (i.e., smells strongly of oil, weak
chlorine odor, etc.): a
4. Clarity: Choose the number which best describes the clarity of the discharge, where 1 is clear
and 5 is very cloudy:
1 (?� 3 4 5
5. Floating Solids: Choose the number which best describes the amount of floating solids in the
stormwater discharge, where 1 is no solids and 5 is the surface covered with floating solids:
6 �7
2 3 4 5
6. Suspended Solids: Choose the number which best describes the amount of suspended solids in
the stormwater discharge, where 1 is no solids and 5 is extremely muddy:
2 3 4 5
7.
8.
9.
Is there any foam in the stormwater discharge? )P Yes Q No.
Is there an oil sheen in the stormwater discharge? QYes #No.
Is there evidence of erosion or deposition at the outfall? Q Yes A(No.
10. Other Obvious Indicators of Stormwater Pollution:
List and describe
Note: Low clarity, high solids, and/or the presence of foam, oil sheen, or erosion/deposition may be
indicative of pollutant exposure. These conditions warrant further investigation.
Page 2 of 2
SWU-342. Last modified 00-01/2018

(� aceAnalytical"
Report of Analysis
Shield Engineering
4301 Taggart Creek Road
Charlotte, NC 28208--5483
Attention: Melinda Greene
Project Name: Daimler Gastonia SW
Lot Number:WG09056
Date Completed:08/06/2021
H'9'h/ X
08/09/2021 4:23 PM
Approved and released by:
Project Manager I: Hannah K. Lucas
The electronic signature above is the equivalent of a handwritten signature.
This report shall not be reproduced, except in its entirety, without the written approval of Pace Analytical Services, LLC.
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172
Tel [phone] Fax:[phone] www.parelabs.com
Page I of20

PACE ANALYTICAL SERVICES, LLC
SC DHEC No. 32010001 NELAC No: E87653 NC DENR No: 329 NC Field Parameters No: 5639
Case Narrative
Shield Engineering
Lot Number: WG09066
This Report of Analysis contains the analytical result(s) for the sample(s) listed on the Sample Summary
following this Case Narrative. The sample receiving date is documented in the header information
associated with each sample.
All results listed in this report relate only to the samples that are contained within this report.
Sample receipt, sample analysis, and data review have been performed in accordance with the most
current approved The NELAC Institute (TNI) standards, the Pace Analytical Services, LLC ("Pace")
Laboratory Quality Manual, standard operating procedures (SOPS), and Pace policies. Any exceptions to
the TNI standards, the Laboratory Quality Manual, SOPS or policies are qualified on the results page or
discussed below.
If you have any questions regarding this report please contact the Pace Project Manager listed on the
cover page.
Pace Analytical Services, LLC (formerly Shealy Envimnmetal Services, Ina)
106 vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 2 of 20

PACE ANALYTICAL SERVICES, LLC
Sample Summary
Shield Engineering
Lot Number: WG09066
Project Name: Daimler Gastonia SW
Project Number:
Sample Number Sample ID Matrix Date Sampled Date Received
001 SDO-001 Aqueous 07/08/20210940 07/09/2021
(1 sample)
Pace Analytical Services. LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 3 of 20

PACE ANALYTICAL SERVICES, LLC
Detection Summary
Shield Engineering
Lot Number: WG09066
Project Name: Daimler Gastonia SW
Project Number:
Sample Sample ID
Matrix
Parameter Method
Result Q
Units
Page
001
SDO-001
Aqueous
COD SM 5220D-
45
mg/L
5
001
SDO-001
Aqueous
TSS SM 254013-
31
mg/L
5
001
SDO-001
Aqueous
Copper 200.8
16
ug/L
6
001
SDO-001
Aqueous
Lead 200.8
1.1
ug/L
6
001
SDO-001
Aqueous
Zinc 200.8
4.6 J
ug/L
6
(5 detections)
Pare Analytical Services, LLC (lorme►iy Shealy Envlronmentel Servkes, Inc.)
108 Vantage Point Drive West Columbla, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 4 of 20

Inorganic non-metals
Client:Shield Engineering Laboratory ID:WG09056-001
Description: SDO-001 Matrix: Aqueous
Date Sampled:07/08/2021 0940 Project Name: Daimler Gastonia SW
Date Received:0710912021 Project Number:
Run Prep Method
Analytical Method
Dilution
Analysis Date Analyst Prep Date
Batch
2
(COD) SM 522OD-2011
1
07/16/2021 1501 DAK
99065
1
(TSS) SM 254OD-2011
1
07/14/2021 1725 MOM
98866
1
(SGT - HEM (n) 1664B
1
07/16/2021 1100 SAF
99101
CAS Analytical
Parameter
Number Method
Result Q
LOO
DL
Units Run
COD
SM 5220D-2011
45
20
20
mg1L 2
TSS
SM 264OD-2011
31
7.1
1.0
mg1L 1
SGT - HEM (non -polar material)
1664E
ND
5.0
1.6
mg/L 1
LOQ = Limit of Quantitation 8 = Detected in the method blank E = Quantitabon of compound exceeded the calibration range DL = Detection Limit Q = Sumvgate failure
ND = Not detected at or above the DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% J = Estimated result < LOQ and a DL L = LCSILCSD failure
H = Out of holding time W = Reported on wet weight basis S = MSIMSD failure
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.paosiabs.com
Page 5 of 20

ICP-MS
Client:Shield Engineering Laboratory ID: WG09056-001
Description: SDO-001 Matrix: Aqueous
Date Sampled:07/08/2021 0940 Project Name: Daimler Gastonia SW
Date Received:0710912021 Project Number.
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 200.2 200.8 1 08/06/2021 0929 BNW 07/12/2021 1129 98525
CAS
Analytical
Parameter
Number
Method
Result Q
LOQ
DL
Units
Run
Copper
7440-50-8
200.8
16
5.0
1.3
ug/L
1
Lead
7439-92-1
200.8
1.1
1.0
0.25
ug/L
1
Zinc
7440-66-6
200.8
4.6 J
10
2.5
ug/L
1
LOCI = Umtt of Quantitation 8 = Detected in the method blank E = Qusa tation of compound exceeded the calibration range DL = Detection Limit 0 = Surrogate failure
ND = Not detected at or above the DL N = Recovery is out of criteria Pa The RPD between two GC columns exceeds 40% J = Estimated result < LOQ and > DL L = LCSA.CSD failure
H = Out of holding time W = Reported on wet weight basis S = MS/MSD failure
Pace Analytical Services, LLC (formerly Shealy Enufronmentat Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacolabs.com
Page 6 of 20

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Inorganic non-metals - LCS
Sample ID: WQ98866-002 Matrix: Aqueous
Batch: 98866
Analytical Method: SM 254OD-2011
Spike
Amount Result %Roe
Parameter (mg/L.) (mg L) Q Oil % Roe Limit Analysis Date
TSS 250 250 1 98 90-110 07/14120211725
LOQ = Umii of Quantitabon ND = Not detected at or above the DL N = Recovery Is out of criteria
DL = Detection Umlt J = Estimated result < LOQ and > DL P = The RPD between two GC columns exceeds 40%
• = RSD is out of criteria + = RPD Is out of criteria
Note: Calculations are performed before rounding to avoid round -off errors In calculated results
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) QC Data for Lot Number. WG09056
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 9 of 20

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Inorganic non-metals - MS
Sample ID: WG09056-001MS Matrix: Aqueous
Batch: 99065
Analytical Method: SM 522OD-2011
Sample Spike
Amount Amount Result %Rec
Parameter (mg/L) (mg/L) (mg/L) a DII % Rec Limit Analysis Date
COD 45 40 84 1 99 90-110 07/16/20211502
LOQ = Limit of Quantitation ND = Not detected at or above the DL N = Recovery Is out of criteria
DL = Detection Limit J = Estimated result < LOQ and > DL P = The RPD between two GC columns exceeds 40%
' = RSD Is out of criteria + = RPD is out of criteria
Note: Calculations are performed before rounding to avoid round -off errors In calculated results
Passe Analytical Services, LLC (fonnedy Shealy Env►mnmental Services, Inc.) QC Data for Lot Number: WG09056
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 12 of 20

Inorganic non-metals - MSD
Sample ID: WG09056-001 MD
Batch: 99065
Analvtical Method: SM 522OD-2011
Matrix: Aqueous
Sample Spike
Amount Amount Result %Roe % RPD
Parameter (mglL) (mg/L) (mg/L) Q Dil % Roe % RPD Limit Limit Analysis Date
COD 45 40 84 1 98 0.39 90-110 20 07/16/20211503
LOQ = Limn of Quantitation ND = Not detected at or above the DL N = Recovery Is out of criteria
DL = Detection Limit J = Estimated result < LOCI and > DL P = The RPD between two GC columns exceeds 40%
• = RSD is out of criteria + = RPD Is out of criteria
Note: Calculations are performed before rounding to avoid round -off errors in calculated results
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) QC Data for Lot Number. WG09056
108 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.paoelabs.com
Page 13 of 20

Inorganic non-metals - MB
Sample ID: WQ99101-001 Matrix: Aqueous
Batch: 99101
Analytical Method: 1664E
Parameter Result Q DII LOQ DL Units Analysis Date
SGT - HEM (non -polar material) ND 1 5.0 1.4 mg/L 07/16/2021 1100
LOQ = Limit of Quentltation ND = Not detected at or above the DL N = Recovery is out of criteria
DL = Detection Limit J = Estimated result < LOQ and > DL P = The RPD between two GC oolumns exceeds 40%
= RSD is out of criteria + = RPD is out of criteria
Note: Calculations are performed before rounding to avoid round -off errors in calculated results
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc) QC Data for Lot Number: WG09056
108 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 14 of 20

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ICP-MS - MB
Sample ID: WQ98525-001 Matrix: Aqueous
Batch: 98625 Prop Method: 200.2
Analytical Method: 200.8 Prep Date: 07/12/2021 1129
Parameter
Result Q Dil
LOQ
DL
Units
Analysis Data
Copper
ND 1
5.0
1.3
ug/L
07/30/20211801
Lead
ND 1
1.0
0.25
ug/L
08/06/20210010
Zinc
ND 1
10
2.5
ug/L
07/30/20211801
LOQ = Limit of Quantitation ND = Not detected at or above the DL N = Recovery Is out of criteria
DL = Detection Limit J = Estimated result < LOQ and > DL P = The RPD between two GC columns exceeds 40%
• = RSD Is out of criteria + = RPD Is out of criteria
Note: Calculations are performed before rounding to avoid round -off errors In calculated results
Pace Analytical Services, LLC (fonnedy Shealy Environmental Services, Inc) QC Data for Lot Number: WG09056
108 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 16 of 20

ICP-MS - LCS
Sample ID: WQ98525-002
Matrix: Aqueous
Batch: 98525
Prep Method: 200.2
Analytical Method: 200.8
Prep Date: 07/12/2021 1129
Spike
Amount
Result
%Roe
Parameter
(ug/L)
(ug/L)
Q Dil % Roe
Limit
Analysis Date
Copper
100
110
1 112
85-115
07/30/20211808
Lead
100
94
1 94
85-115
08/06/20210017
Zinc
100
94
1 94
85-115
07/30120211808
LOQ = Limn of Quantltation ND = Not detected at or above the DL N = Recovery is out of criteria
DL = Detection Limit J = Estimated result < LOQ and > DL P = The RPD between two GC columns exceeds 40%
= RSD is out of criteria + = RPD is out of criteria
Note: Calculations are performed before rounding to avoid round -off errors in calculated results
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) QC Data for Lot Number. WG09056
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 17 of 20

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�'E:to seals ont%coat+sr?Yes ifcuwseals wens VwMat. arar+e ft intact and unbroka:n?
• mzrtia
� Strip ID. . Chlorine Strip [D: H► _ 1lesied �' ttntzw
Drwwlwe apetaeure upon receipt! Vwiwsd (Corrected) fWhPcrattu�a upotii Mmipt %Solid Snap -Cup ID: NA
1.0 .
aC. NA /NA aC NA /NA CC i+lA N,l aC
Vlediod: ©Taap mtwe Dltitink 'iginst Boltks iR Gun ID: S iR Curti Cwcction rawotr: 0 'C
Method of stool t- N w [�
an
.
et Sw lee RICKS 16 D lae None
[] Yes ❑ No
QNA
3. If tempareture of'atsy cooler w=cded &OOC, was ProjoCt Ma:tia Mori f ed?
PM was Notified by: phone 1 entail / face-too-fhce (Circle one).
v Irio
A
4. b the cart timmeraiai amdar a pawns SAP attached to this form?
21 Yes UNQ
S. Were opar cusped rorcxittr+cs (relittquiahtxGreoeived folbtvcd?
Yes AI
G, Wesv Sara Ic JIM listed on the COC.
Yes Na
V. Ware sample IN listed on all sans fe oontainars?
EYMOS No
R Wn collection dare & lime iisW on the f:OC?
No
9. Woe collection date & time lig d on all satrt is contahms?
Yes No
10. Did ap container Jabal information (ID, date, trine) age ,veil~ the (X IC?
Yea No
t 1. Were trsts to be perfomrad listed on the COfCr
m Yes ❑ Wn
12. Did all samples:hive in the proper co staineh fnr each test midlor In good condition
{unbrolun, :ids on. etc.)?
Yes No
13. Was uafe Sam Iss volwma avallabic?
Yes 9a
lei. Were all Sam Ira mceived within :4 the hown time or 48 hours, whkhever comes first?
Yea N
1S. Mere seat lee mitacittg%xcess(citalo onc) a nWas Not listed on COC?
❑Yeg N
©NA
IG. ror VOA and RSK-175 samples, were lwbbl= present>"pea sbe, CI-0r bmm in diamete
to of *e VOA vials?
Yes
td
A
17. Werc all I Ulistetalshtitttrfwt sate cs received at a H of { 27
Ye
t8. Wcre all samples receivaf at s eH > 12 and sulfide lrs racelved at a H > g:►
❑Yes ❑ No
MNA
: _ m all _ applicable a esto as. .3 { .Sm smnp ea me o
❑ Yes El -No ONA 20. Wem client remarks4 quesm (i.e. Nested dltuuons, .MWMSO designations.
cotywly transctibed fivm the COC into the cmn)nent Mcdon in UMS?
Yes 1. Was the ualc number listed on the container label? If M Quote # IM
'ample Preservadan (Must be OMP1et9d forany ssmpk(s) inavrecW p umved er with headspare.)
;ample($) MA were rtisaeived Incormaly preserved and were adjuaW acc,+otdil
n sample reining with NA of circle one: ti7StJ4, iil�i43, HCI, NaOH using $R # MA
l? 'p tiun NA If mote ihan ane FreSMative is needed, picas not in tk comments below.
lample(s) NA were raccivcd with bub las>6 min la diamotcr.
uunlleg-S) 'M _ were rcaeivcd with TKC > O.s avi. (If m is no) and were
idjusted ecowdingly in sample receiving with sodium thlosutfste (ma.s2 3) with Shealy 1D: ImA
Rk batrode labels applied 4-: JSM Qata 47t
camn.f a .
Pace Analytical Services, LLC (formedy Shealy Enwftnmental Services, Inc.)
108 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.paoelabs.com
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