NCG080649_2020 DMR_20201221

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TNI
ENCO Laboratories
Accurate. Timely. Responsive. Innovative.
102-A Woodwinds Industrial Court
Cary NC, 27511
Phone: [phone] FAX: [phone]
Monday, December 21, 2020
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): CD20029
Dear Parker Alvis,
Enclosed is a copy of your laboratory report for test samples received by our laboratory on
Monday, December 7, 2020.
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 S

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SAMPLE SUMMARY/LABORATORY CHRONICLE
Client ID: Outfall -01
Lab ID: CD20029-01
Sampled: 12/07/20 10:06
Received: 12/07/20 13:12
Parameter
Preparation
Hold Date/Time(s)
Prep Date/Time(s)
Analysis Date/Time(s)
EPA 1664B
EPA 1664B
01/04/21
12/15/20 08:15
12/15/20 13:11
SM 254OD-2011
NO PREP
12/14/20
12/08/20 17:21
12/08/20 17:21
SM 4500H +B-2011
NO PREP
12/07/20 10:20
12/09/20 17:45
12/09/20 18:03
Client ID: Outfall -02
Lab ID: CD20029-02
Sampled: 12/07/20 09:54
Received: 12/07/20 13:12
Parameter
Preparation
Hold Date/Time(s)
Prep Date/Time(s)
Analysis Date/Time(s)
EPA 1664B
EPA 1664B
01/04/21
12/15/20 08:15
12/15/20 13:11
SM 254OD-2011
NO PREP
12/14/20
12/08/20 17:21
12/08/20 17:21
SM 4500H +B-2011
NO PREP
12/07/20 10:08
12/09/20 17:45
12/09/20 18:03
FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 2 Of 8

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SAMPLE DETECTION SUMMARY
Client ID: Outfall -01
Lab ID:
CD20029-01
Analvte
Results
Flag MDL
2
Units
Method
Notes
pH
7.1
1.0
1.0
pH
SM 4500H+B-2011
Q-01
Temperature for pH (deg. Q
7.4
pH
SM 4500H+B-2011
Q-01
Total Suspended Solids
8.7
4.2
4.2
mg/L
SM 254OD-2011
Client ID: Outfall -02
Lab ID:
CD20029-02
Analvte
Results
Flag MDL
2
Units
Method
Notes
pH
7.0
1.0
1.0
pH
SM 4500H+B-2011
Q-01
Temperature for pH (deg. Q
Total Suspended Solids
7.5 pH
6.5 2.9 2.9 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 8

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ANALYTICAL RESULTS
Description: Outfall -01 Lab Sample ID: CD20029-01 Received: 12/07/20 13:12
Matrix: Water Sampled: 12/07/20 10:06 Work Order: CD20029
Project: DATA-DCTC Sampled By: Parker Alvis
Classical Chemistry Parameters
I
^ - ENCO Cary certified analyte [NC 591]
Analyte rCAS Numberl Results Flao
Units
DF
MDL
Q
Batch
Method
Analyzed
By
Notes
pH^ 7.1
pH
1
1.0
1.0
OL09016
SM 4500H+B-2011
12/09/20 18:03
DMJ
Q-01
Temperature for pH (deg. Q 7.4
pH
1
OL09016
SM 4500H+B-2011
12/09/20 18:03
DM]
Q-01
Total Suspended Solids^ 8.7
mg/L
1.67
4.2
4.2
OL08006
SM 2540D-2011
12/08/20 17:21
DM]
Classical Chemistry Parameters
^ - ENCO Jacksonw1le certified analyte [NC 442]
Analyte rCAS Numberl Results Flao
Units
DF
MDL
Q
Batch
Method
Analyzed
By
Notes
Oil & Grease (HEM) [C-0007]^ ND
mg/1-
1
1.50
5.00
OL14007
EPA 1664B
12/15/20 13:11
LTS
Description: Outfall -02 Lab Sample ID: CD20029-02 Received: 12/07/20 13:12
Matrix: Water Sampled: 12/07/20 09:54 Work Order: CD20029
Project: DATA-DCTC Sampled By: Parker Alvis
Classical Chemistry Parameters
I
^ - ENCO Cary certified analyte [NC 591]
Analyte rCAS Numberl Results Flao
Units
DF
MDL
Q
Batch
Method
Analyzed
By
Notes
pH^ 7.0
pH
1
1.0
1.0
OL09016
SM 4500H+B-2011
12/09/20 18:03
DMJ
Q-01
Temperature for pH (deg. Q 7.5
pH
1
OL09016
SM 4500H+B-2011
12/09/20 18:03
DM]
Q-01
Total Suspended Solids^ 6.5
mg/L
1.18
2.9
2.9
OL08006
SM 2540D-2011
12/08/20 17:21
DM]
Classical Chemistry Parameters
^ - ENCO Jacksonw1le certified analyte [NC 442]
Analyte rCAS Numberl Results Flao
Units
DF
MDL
Q
Batch
Method
Analyzed
By
Notes
Oil & Grease (HEM) [C-0007]^ ND
mg/L
1
1.50
5.00
OL14007
EPA 1664B
12/15/20 13:11
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 8

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QUALITY CONTROL DATA
Classical Chemistry Parameters - Quality Control
Batch 0L08006 - NO PREP
Blank (OL08006-BLKI) Prepared & Analyzed: 12/08/2020 17:21
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 (OL08006-BSI) Prepared & Analyzed: 12/08/2020 17:21
Spike Source %REC
RPD
Analvte
Result
Flag
Q
Units
Level Result %REC Limits
RPD
Limit Notes
Total Suspended Solids
110
2.5
mg/L
100 113 80-120
Duplicate (OL08006-DUP1)
Prepared & Analyzed: 12/08/2020 17:21
Source: CD19528-01
Spike Source %REC
RPD
Analvte
Result
Flag
Q
Units
Level Result %REC Limits
RPD
Limit Notes
Total Suspended Solids
320
50
mg/L
310
2
20
Duplicate (OL08006-DUP2)
Prepared & Analyzed: 12/08/2020 17:21
Source: CD19905-03
Spike Source %REC
RPD
Analvte
Result
Flag
2
Units
Level Result %REC Limits
RPD
Limit Notes
Total Suspended Solids
120
25
mg/L
110
16
20
Batch 0L09016 - NO PREP
LCS (OL09016-BSI) Prepared: 12/09/2020 17:45 Analyzed: 12/09/2020 18:03
Spike
Source
%REC
RPD
Analvte
Result Flag
Q
Units
Level
Result
%REC Limits RPD
Limit Notes
pH
7.0
1.0
pH
7.00
100 99-101
Duplicate (OL09016-DUP1)
Prepared: 12/09/2020 17:45 Analyzed: 12/09/2020 18:03
Source: CD20029-01
Spike
Source
%REC
RPD
Analvte
Result Flag
Q
Units
Level
Result
%REC Limits RPD
Limit Notes
pH
6.9
1.0
pH
7.1
4
25
Classical Chemistry Parameters -
Quality Control
Batch 0L14007 - EPA 1664E
Blank (OL14007-BLKI)
Prepared: 12/15/2020 08:15 Analyzed: 12/15/2020 13:11
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 (OL14007-BSI)
Prepared: 12/15/2020 08:15 Analyzed: 12/15/2020 13:11
Spike Source %REC
RPD
Anala
Result
Flag
Q
Units
Level Result %REC Limits RPD
Limit Notes
Oil & Grease (HEM)
133
5.00
mg/L
162 82 78-114
LCS Dup (OL14007-BSDI)
Prepared: 12/15/2020 08:15 Analyzed: 12/15/2020 13:11
Spike Source %REC
RPD
Anala
Result
Flag
Q
Units
Level Result %REC Limits RPD
Limit Notes
Oil & Grease (HEM)
138
5.00
mg/L
163 85 78-114 4
18
FINAL
This report relates only to the sample as
received by the
laboratory, and may only be reproduced in full.
Page 5 Of 8

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QUALITY CONTROL DATA
Classical Chemistry Parameters - Quality Control
Batch 0L14007 - EPA 1664E - Continued
Matrix Spike (OL14007-MSI) Prepared: 12/15/2020 08:15 Analyzed: 12/15/2020 13:11
Source: BD03941-01
Spike Source %REC RPD
Analvte Result Flag 2 Units Level Result %REC Limits RPD Limit Notes
Oil & Grease (HEM) 121 5.00 mg/L 153 1.50 u 79 78-114
FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 6 Of S

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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 7 of 8

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