NCG080649_2021 DMR_20210305

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TNI
ENCO Laboratories
Accurate. Timely. Responsive. Innovative.
102-A Woodwinds Industrial Court
Cary NC, 27511
Phone: [phone] FAX: [phone]
Tuesday, March 2, 2021
EI Group, Inc. (TH005)
Attn: Parker Alvis
2101 Gateway Center Blvd., Suite 200
Morrisville, NC 27560
RE: Laboratory Results for
Project Number: [none], Project Name/Desc: DATA-DCTC
ENCO Workorder(s): CE00762
Dear Parker Alvis,
Enclosed is a copy of your laboratory report for test samples received by our laboratory on
Thursday, February 18, 2021.
Unless otherwise noted in an attached project narrative, all samples were received in
acceptable condition and processed in accordance with the referenced methods/procedures.
Results for these procedures apply only to the samples as submitted.
The analytical results contained in this report are in compliance with NELAC standards, except
as noted in the project narrative if applicable. This report shall not be reproduced except in
full, without the written approval of the Laboratory.
This report contains only those analyses performed by Environmental Conservation
Laboratories. Unless otherwise noted, all analyses were performed at ENCO Cary. Data from
outside organizations will be reported under separate cover.
If you have any questions or require further information, please do not hesitate to contact me.
Sincerely,
A40
Bill Scott
Project Manager
Enclosure(s)
FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 1 of 7

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SAMPLE SUMMARY/LABORATORY CHRONICLE
Client ID: Outfall #1
Lab ID: CE00762-01
Sampled: 02/18/21 11:20
Received: 02/18/21 13:28
Parameter
Preparation
Hold Date/Time(s)
Prep Date/Time(s)
Analysis Date/Time(s)
EPA 1664B
EPA 1664B
03/18/21
02/24/21 08:30
02/24/21 14:11
SM 254OD-2011
NO PREP
02/25/21
02/20/21 09:45
02/20/21 09:45
SM 4500H+B-2011
NO PREP
02/18/21 11:34
02/24/21 08:23
02/24/21 08:23
Client ID: Outfall #2
Lab ID: CE00762-02
Sampled: 02/18/21 11:25
Received: 02/18/21 13:28
Parameter
Preparation
Hold Date/Time(s)
Prep Date/Time(s)
Analysis Date/Time(s)
EPA 1664B
EPA 1664B
03/18/21
02/24/21 08:30
02/24/21 14:11
SM 254OD-2011
NO PREP
02/25/21
02/20/21 09:45
02/20/21 09:45
SM 4500H+B-2011
NO PREP
02/18/21 11:39
02/24/21 08:23
02/24/21 08:23
FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 2 Of 7

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SAMPLE DETECTION SUMMARY
Client ID: Outfall #1
Lab ID:
CE00762-01
Analvte
Results
Flag MDL
2
Units
Method
Notes
Oil & Grease (HEM)
8.63
1.50
5.00
mg/L
EPA 1664B
pH
7.3
1.0
1.0
pH
SM 4500H+B-2011
Q-01
Temperature for pH (deg. C)
22
pH
SM 4500H+B-2011
Q-01
Total Suspended Solids
17
4.1
4.1
mg/L
SM 254OD-2011
Client ID: Outfall #2
Lab ID:
CE00762-02
Analvte
Results
Flag MDL
2
Units
Method
Notes
Oil & Grease (HEM)
12.3
1.50
5.00
mg/L
EPA 1664B
pH
7.0
1.0
1.0
pH
SM 4500H+B-2011
Q-01
Temperature for pH (deg. C)
Total Suspended Solids
22 pH
14 4.7 4.7 mg/L
SM 4500H+B-2011 Q-01
SM 254OD-2011
FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 3 Of 7

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ANALYTICAL RESULTS
Description: Outfall #1 Lab Sample ID:CE00762-01 Received: 02/18/21 13:28
Matrix: Water Sampled: 02/18/21 11:20 Work Order: CE00762
Project: DATA-DCTC Sampled By: Casey Gilleland
Classical Chemistry Parameters
I
^ - ENCO Cary certified analyte [NC 591]
Analyte rCAS Numberl Results Flao
Units
DF
MOIL
Q
Batch
Method
Analyzed
By
Notes
pH^ 7.3
pH
1
1.0
1.0
11324002
SM 4500H+B-2011
02/24/21 08:23
ZGW
Q-01
Temperature for pH (deg. C) 22
pH
1
11324002
SM 4500H+B-2011
02/24/21 08:23
ZGW
Q-01
Total Suspended Solids^ 17
mg/L
1.64
4.1
4.1
11320005
SM 254OD-2011
02/20/21 09:45
ZGW
Classical Chemistry Parameters
^ - ENCO Jacksonw1le certified analyte [NC 442]
Analyte rCAS Numberl Results Flao
Units
DF
MOIL
Q
Batch
Method
Analyzed
By
Notes
Oil &Grease (HEM) [C-0007]^ 8.63
mg/1-
1
1.50
5.00
11324001
EPA 1664B
02/24/21 14:11
LTS
Description: Outfall #2 Lab Sample ID:CE00762-02 Received: 02/18/21 13:28
Matrix: Water Sampled: 02/18/21 11:25 Work Order: CE00762
Project: DATA-DCTC Sampled By: Casey Gilleland
Classical Chemistry Parameters
I
^ - ENCO Cary certified analyte [NC 591]
Analyte rCAS Numberl Results Flao
Units
DF
MOIL
Q
Batch
Method
Analyzed
By
Notes
pH^ 7.0
pH
1
1.0
1.0
11324002
SM 4500H+B-2011
02/24/21 08:23
ZGW
Q-01
Temperature for pH (deg. C) 22
pH
1
11324002
SM 4500H+B-2011
02/24/21 08:23
ZGW
Q-01
Total Suspended Solids^ 14
mg/L
1.89
4.7
4.7
11320005
SM 254OD-2011
02/20/21 09:45
ZGW
Classical Chemistry Parameters
^ - ENCO Jacksonw1le certified analyte [NC 442]
Analyte rCAS Numberl Results Flao
Units
DF
MOIL
Q
Batch
Method
Analyzed
By
Notes
Oil & Grease (HEM) [C-0007]^ 12.3
mg/L
1
1.50
5.00
11324001
EPA 1664B
02/24/21 14:11
LTS
FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 4 Of 7

QUALITY CONTROL DATA
Classical Chemistry Parameters - Quality Control
Batch IB20005 - NO PREP
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Blank (1B20005-BLKI) Prepared & Analyzed: 02/20/2021 09:45
Spike Source %REC RPD
Anala Result Flag Q Units Level Result %REC Limits RPD Limit Notes
Total Suspended Solids 2.5 U 2.5 mg/L
LCS (1B20005-BSI) Prepared & Analyzed: 02/20/2021 09:45
Spike Source %REC
RPD
Analvte
Result Flag
Q
Units
Level Result %REC Limits
RPD Limit Notes
Total Suspended Solids
100
2.5
mg/L
100 101 80-120
Duplicate (1B20005-DUPI)
Prepared & Analyzed: 02/20/2021 09:45
Source: CE01447-01
Spike Source %REC
RPD
Analvte
Result Flag
Q
Units
Level Result %REC Limits
RPD Limit Notes
Total Suspended Solids
88
25
mg/L
99
12 20
Batch 1B24002 - NO PREP
LCS (1B24002-BSI) Prepared & Analyzed: 02/24/2021 08:23
Spike
Source
%REC
RPD
Analvte
Result Flag
2
Units
Level
Result
%REC Limits
RPD Limit Notes
pH
7.0
1.0
pH
7.00
100 99-101
Duplicate (1B24002-DUP1)
Prepared & Analyzed: 02/24/2021 08:23
Source: CD19532-01
Spike
Source
%REC
RPD
Analvte
Result Flag
Q
Units
Level
Result
%REC Limits
RPD Limit Notes
pH
7.4
1.0
pH
7.3
2 25
Classical Chemistry Parameters - Quality Control
Batch IB24001 - EPA 1664E
Blank (1B24001-BLKI)
Prepared: 02/24/2021 08:30 Analyzed: 02/24/2021 14:11
Spike Source %REC
RPD
Analvte
Result
Flag
Q
Units
Level Result %REC Limits RPD
Limit Notes
Oil & Grease (HEM)
1.50
U
5.00
mg/L
LCS (1B24001-BSI)
Prepared: 02/24/2021 08:30 Analyzed: 02/24/2021 14:11
Spike Source %REC
RPD
Analvte
Result
Flag
Q
Units
Level Result %REC Limits RPD
Limit Notes
Oil & Grease (HEM)
147
5.00
mg/L
160 92 78-114
LCS Dup (1B24001-BSDI)
Prepared: 02/24/2021 08:30 Analyzed: 02/24/2021 14:11
Spike Source %REC
RPD
Anala
Result
Flag
Q
Units
Level Result %REC Limits RPD
Limit Notes
Oil & Grease (HEM)
143
5.00
mg/L
158 91 78-114 3
18
Matrix Spike (1B24001-MSI)
Prepared: 02/24/2021 08:30 Analyzed: 02/24/2021 14:11
Source: CE00762-02
Spike Source %REC
RPD
Anala
Result
Flag
Q
Units
Level Result %REC Limits RPD
Limit Notes
Oil & Grease (HEM)
149
5.00
mg/L
161 12.3 85 78-114
FINAL
This report relates only to the sample as
received by the
laboratory, and may only be reproduced in full.
Page 5 Of 7

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FLAGS/NOTES AND DEFINITIONS
B The analyte was detected in the associated method blank.
D The sample was analyzed at dilution.
J The reported value is between the laboratory method detection limit (MDL) and the laboratory method
reporting limit (MRL), adjusted for actual sample preparation data and moisture content, where applicable.
U The analyte was analyzed for but not detected to the level shown, adjusted for actual sample preparation
data and moisture content, where applicable.
E The concentration indicated for this analyte is an estimated value above the calibration range of the
instrument. This value is considered an estimate.
MRL Method Reporting Limit. The MRL is roughly equivalent to the practical quantitation limit (PQL) and is
based on the low point of the calibration curve, when applicable, sample preparation factor, dilution
factor, and, in the case of soil samples, moisture content.
PQL PQL: Practical Quantitation Limit. The PQL presented is the laboratory MRL.
N The analysis indicates the presence of an analyte for which there is presumptive evidence (85% or greater
confidence) to make a "tentative identification".
P Greater than 25% concentration difference was observed between the primary and secondary GC column.
The lower concentration is reported.
[CALC] Calculated analyte - MDL/MRL reported to the highest reporting limit of the component analyses.
Q-01 Analysis performed outside of method - specified holding time.
FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 6 of 7

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