NCG120056_2020 DMR_20201228

NCDEQ Division of Energy, Mineral and Land Resources
Stormwater Discharge Monitoring Report (DMR) Form for NCG120000
Landfills
Click here for instructions
Complete, sign, scan and submit the DMR via the Stormwater NPDES Permit Data Monitoring Report (DMR) Upload form within
30 days of receiving sampling results. Mail the original, signed hard copy of the DMR to the appropriate DEMUR Regional Office.
Certificate of Coverage No. NCG12 0 0 5 6 Person Collecting Samples: R. Conner
Facility Name: Upper Piedmont Regional Landfill Laboratory Name: ENCO
Facility County: Person 0 Laboratory Cert. No.: 591
Discharge during this period: ❑■ Yes ❑ No (if no, skip to signature and date)
Has your facility implemented mandatory Tier response actions for any benchmark exceedances? ■❑ Yes ❑ No
If so, which Tier (I, II, or III)? II 0
Part A: Analytical Monitoring Requirements for Outfalls with Industrial Activities— Benchmarks in (Red)
Parameter
Code
Parameter
Outfall 1
Outfall 2
Outfall 3
Outfall 4
Outfall 5
N/A
Receiving Stream Class
SWS-IV, NSW
SWS-IV, NSW
SWS-IV, NSW
SWS-IV, NSW
SWS-IV, NSW
N/A
Date Sample Collected MM/DD/YYYY
12/14/2020
12/14/2020
12/14/2020
12/14/2020
12/14/2020
46529
24-Hour Rainfall in inches
1.16
1.16
1.16
1.16
1.16
COS30
TSS in mg/L (100 or 50*)
500
63
25
200
64
00400
pH in standard units (6.0-9.0)
6.9
7.0
6.8
6.3
6.4
31616
Fecaler per 100 ml of
1 2000
610
2.0
2800
550
freshwater (1(100D)
00340
Chemical Oxygen Demand in mg/L
89
46
22
65
33
(120)
Part B: Vehicle & Equipment Maintenance Areas — Benchmarks in (Red)
Parameter
Parameter
Outfall 1
Outfall 2
Outfall 3
Outfall 4
Outfall 5
Code
N/A
Receiving Stream Class
SWS-IV, NSW
SWS-IV, NSW
SWS-IV, NSW
SWS-IV, NSW
SWS-IV, NSW
N/A
Date Sample Collected MM/DD/YYYY
12/14/2020
12/14/2020
12/14/2020
12/14/2020
12/14/2020
00552
Non -Polar Oil & Grease in mg/L (15)
<2.70
<2.70
<2.70
<2.70
<2.70
NCOIL
New Motor/Hydraulic Oil Usage in
>55
>55
>55
>55
>55
gal/month
* Outfalls to Outstanding Resource Waters (ORW), High Quality Waters (HQW), Trout Waters (Tr) and Primary Nursery Areas (PNA)
have a benchmark TSS limit of 50 mg/L. All other water classifications have a benchmark of 100 mg/L.
Notes (optional):
"I certify by my signature below, 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."
A165W 12/28/2020
Signature of Permittee or Delegated Authorized Individual Date

ENCO Laboratories
9g
Accurate, Timely. Responsive. Iuuovative.
102-A Woodwinds Industrial Court
Cary NC, 27511
Phone: [phone] FAX: [phone]
Thursday, December 24, 2020
Republic Services of NC (RE014)
Attn: Matt Einsmann
5111 Chin Page Rd
Durham, NC 27703
RE: Laboratory Results for
Project Number: Semi -Annual, Project Name/Desc: Upper Piedmont Stormwater
ENCO Workorder(s): CDO8678
Dear Matt Einsmann,
Enclosed is a copy of your laboratory report for test samples received by our laboratory on
Monday, December 14, 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,
Amanda L. Gaines
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 12

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SAMPLE SUMMARY/LABORATORY CHRONICLE
Client ID: Outfalll
Lab ID: CDO8678-01
Sampled: 12/14/20 10:00
Received: 12/14/20 13:32
Parameter
Preoaration
Hold Date/Time(s)
Preo Date/Time(s)
Analysis Date/Time(s)
EPA 1664B
EPA 1664B
01/11/21
12/21/20 16:00
12/22/20 15:48
SM 254OD-2011
NO PREP
12/21/20
12/17/20 18:05
12/17/20 18:05
SM 4500H +B-2011
NO PREP
12/14/20 10:14
12/15/20 16:20
12/15/20 16:20
SM 5220D-2011
Same
01/11/21
12/15/20 08:10
12/15/20 11:00
Client ID: Outfalll
Lab ID: CDO8678-01RE1
Sampled: 12/14/20 10:00
Received: 12/14/20 13:32
Parameter
Preoaration
Hold Date/Time(s)
Preo Date/Time(s)
Analysis Date/Time(s)
Colilert 18
NO PREP
12/14/20 17:55 12/15/20
13:10 12/14/20 15:06
12/15/20 10:54
Client ID: Outfal12
Lab ID: CDO8678-02
Sampled: 12/14/20 10:10
Received: 12/14/20 13:32
Parameter
Preoaration
Hold Date/Time(s)
Preo Date/Time(s)
Analysis Date/Time(s)
Colilert 18
NO PREP
12/14/20 18:05 12/15/20
13:10 12/14/20 15:06
12/15/20 10:54
EPA 1664B
EPA 1664B
01/11/21
12/21/20 08:30
12/21/20 15:05
SM 254OD-2011
NO PREP
12/21/20
12/17/20 18:05
12/17/20 18:05
SM 4500H +B-2011
NO PREP
12/14/20 10:24
12/15/20 16:20
12/15/20 16:20
SM 5220D-2011
Same
01/11/21
12/15/20 08:10
12/15/20 11:00
Client ID: Outfal13
Lab ID: CDO8678-03
Sampled: 12/14/20 10:20
Received: 12/14/20 13:32
Parameter
Preoaration
Hold Date/Time(s)
Preo Date/Time(s)
Analysis Date/Time(s)
Colilert 18
NO PREP
12/14/20 18:15 12/15/20
13:10 12/14/20 15:06
12/15/20 10:54
EPA 1664B
EPA 1664B
01/11/21
12/21/20 08:30
12/21/20 15:05
SM 254OD-2011
NO PREP
12/21/20
12/17/20 18:05
12/17/20 18:05
SM 4500H +B-2011
NO PREP
12/14/20 10:34
12/15/20 16:20
12/15/20 16:20
SM 5220D-2011
Same
01/11/21
12/15/20 08:10
12/15/20 11:00
Client ID: Outfal14
Lab ID: CDO8678-04
Sampled: 12/14/20 10:30
Received: 12/14/20 13:32
Parameter
Preoaration
Hold Date/Time(s)
Prep Date/Time(s)
Analysis Date/Time(s)
EPA 1664B
EPA 1664B
01/11/21
12/21/20 08:30
12/21/20 15:05
SM 254OD-2011
NO PREP
12/21/20
12/17/20 18:05
12/17/20 18:05
SM 4500H +B-2011
NO PREP
12/14/20 10:44
12/15/20 16:20
12/15/20 16:20
SM 5220D-2011
Same
01/11/21
12/15/20 08:10
12/15/20 11:00
Client ID: Outfal14
Lab ID: CDO8678-04RE1
Sampled: 12/14/20 10:30
Received: 12/14/20 13:32
Parameter
Preparation
Hold Date/Time(s)
Prep Date/Time(s)
Analysis Date/Time(s)
Colilert 18
NO PREP
12/14/20 18:25 12/15/20
13:10 12/14/20 15:06
12/15/20 10:54
Client ID: Outfall S
Lab ID: CDO8678-05
Sampled: 12/14/20 10:40
Received: 12/14/20 13:32
Parameter
Preparation
Hold Date/Time(s)
Prep Date/Time(s)
Analysis Date/Time(s)
Colilert 18
NO PREP
12/14/20 18:35 12/15/20
13:10 12/14/20 15:06
12/15/20 10:54
EPA 1664B
EPA 1664B
01/11/21
12/21/20 08:30
12/21/20 15:05
SM 254OD-2011
NO PREP
12/21/20
12/17/20 18:05
12/17/20 18:05
SM 4500H +B-2011
NO PREP
12/14/20 10:54
12/15/20 16:20
12/15/20 16:20
SM 5220D-2011
Same
01/11/21
12/18/20 09:08
12/18/20 14:16
FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 2 Of 12

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SAMPLE DETECTION SUMMARY
Client ID: Outfall 1
Lab ID:
CDO8678-01
Ana We
Results
Flag
MDL
2
Units
Method
Notes
Chemical Oxygen Demand
89
10
10
mg/L
SM 5220D-2011
pH
6.9
1.0
1.0
pH
SM 4500H+B-2011
Q-01
Temperature for pH (deg. C)
9.8
pH
SM 4500H+B-2011
Q-01
Total Suspended Solids
500
83
83
mg/L
SM 254OD-2011
Client ID: Outfall 1
Lab ID:
CDO8678-01RE1
Analvte
Results
Flag
MDL
2
Units
Method
Notes
Coliform, Fecal
12000
10
10
MPN/100 mL
Colilert 18
Client ID: Outfall 2
Lab ID:
CDO8678-02
Analvte
Results
Flag
MDL
2
Units
Method
Notes
Chemical Oxygen Demand
46
10
10
mg/L
SM 5220D-2011
Coliform, Fecal
610
1.0
1.0
MPN/100 mL
Colilert 18
pH
7.0
1.0
1.0
pH
SM 4500H+B-2011
Q-01
Temperature for pH (deg. C)
10
pH
SM 4500H+B-2011
Q-01
Total Suspended Solids
63
17
17
mg/L
SM 254OD-2011
Client ID: Outfall 3
Lab ID:
CDO8678-03
Anala
Results
Flag
MDL
POLL
Units
Method
Notes
Chemical Oxygen Demand
22
10
10
mg/L
SM 5220D-2011
Coliform, Fecal
2.0
1.0
1.0
MPN/100 mL
Colilert 18
pH
6.8
1.0
1.0
pH
SM 4500H+B-2011
Q-01
Temperature for pH (deg. C)
10
pH
SM 4500H+B-2011
Q-01
Total Suspended Solids
25
5.0
5.0
mg/L
SM 254OD-2011
Client ID: Outfall 4
Lab ID:
CDO8678-04
Anala
Results
Flag
MDL
POLL
Units
Method
Notes
Chemical Oxygen Demand
65
10
10
mg/L
SM 5220D-2011
pH
6.3
1.0
1.0
pH
SM 4500H+B-2011
Q-01
Temperature for pH (deg. C)
11
pH
SM 4500H+B-2011
Q-01
Total Suspended Solids
200
25
25
mg/L
SM 254OD-2011
Client ID: Outfall 4
Lab ID:
CDO8678-04RE1
Anala
Results
Flag
MDL
POLL
Units
Method
Notes
Coliform, Fecal
2800
10
10
MPN/100 mL
Colilert 18
Client ID: Outfall 5
Lab ID:
CDO8678-05
Anala
Results
Flag
MDL
POLL
Units
Method
Notes
Chemical Oxygen Demand
33
10
10
mg/L
SM 5220D-2011
Coliform, Fecal
550
1.0
1.0
MPN/100 mL
Colilert 18
pH
6.4
1.0
1.0
pH
SM 4500H+B-2011
Q-01
Temperature for pH (deg. C)
10
pH
SM 4500H+B-2011
Q-01
Total Suspended Solids
64
8.3
8.3
mg/L
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 12

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ANALYTICAL RESULTS
Description: Outfall 1 Lab Sample ID:CD08678-01 Received: 12/14/20 13:32
Matrix: Surface Water Sampled: 12/14/20 10:00 Work Order: CD08678
Project: Upper Piedmont Stormwater Sampled By: Randy Conner
Classical Chemistry Parameters
^ - ENCO Cary certified analyte [NC 591]
Analvte rCAS Numberl Results
Flag
Units
DF
MOIL
2
Batch
Method
Analyzed
By
Notes
Chemical Oxygen Demand^ 89
mg/L
1
10
10
OL15001
SM 5220D-2011
12/15/20 11:00
JOC
pH^ 6.9
pH
1
1.0
1.0
OL15027
SM 4500H+B-2011
12/15/20 16:20
DMJ
Q-01
Temperature for pH (deg. C) 9.8
pH
1
OL15027
SM 4500H+B-2011
12/15/20 16:20
DMJ
Q-01
Total Suspended Solids^ S00
mg/L
33.3
83
83
OL17027
SM 2540D-2011
12/17/20 18:05
DMJ
Microbiological Parameters
^ - ENCO Cary certified analyte [NC 591]
Analvte rCAS Numberl Results
Flag
Units
DF
2
Batch
Method
Analyzed
_By
Notes
Coliform, Fecal^ 12000
MPN/100 mL
10
10
OL14040
Colilert 18
12/15/20 10:54
MSE
Classical Chemistry Parameters
^ - ENCO Jackson ville certified analyte [NC 442]
Analvte rCAS Numberl Results
Flag
Units
DF
MOIL
2
Batch
Method
Analyzed
By
Notes
Oil & Grease (HEM-SGT) Non -Polar 2.70
U
mg/L
1
2.70
5.00
OL21004
EPA 1664B
12/22/20 15:48
LTS
laterial^
Description: Outfall 2 Lab Sample ID:CD08678-02 Received: 12/14/20 13:32
Matrix: Surface Water Sampled: 12/14/20 10: 10 Work Order: CD08678
Project: Upper Piedmont Stormwater Sampled By: Randy Conner
Classical Chemistry Parameters
^ - ENCO Cary certified analyte [NC 591]
Analvte rCAS Numberl Results
Flag
Units
DF
MOIL
2
Batch
Method
Analyzed
By
Notes
Chemical Oxygen Demand' 46
mg/L
1
10
10
OL15001
SM 5220D-2011
12/15/20 11:00
JOC
pH^ 7.0
pH
1
1.0
1.0
OL15027
SM 4500H+B-2011
12/15/20 16:20
DMJ
Q-01
Temperature for pH (deg. C) 10
pH
1
OL15027
SM 4500H+B-2011
12/15/20 16:20
DMJ
Q-01
Total Suspended Solids^ 63
mg/L
6.67
17
17
OL17027
SM 2540D-2011
12/17/20 18:05
DMJ
Microbiological Parameters
^ - ENCO Cary certified analyte [NC 591]
Analvte rCAS Numberl Results
Flag
Units
DF
2
Batch
Method
Analyzed
_By
Notes
Coliform, Fecal^ 610
MPN/100 mL
1
1.0
OL14040
Colilert 18
12/15/20 10:54
MSE
Classical Chemistry Parameters
^ - ENCO Jackson ville certified analyte [NC 442]
Analvte rCAS Numberl Results
Flag
Units
DF
MOIL
POLL
Batch
Method
Analyzed
By
Notes
Oil & Grease (HEM-SGT) Non -Polar 2.70
U
mg/L
1
2.70
5.00
OL21001
EPA 1664B
12/21/20 15:05
LTS
Material^
FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 4 Of 12

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ANALYTICAL RESULTS
Description: Outfall 3 Lab Sample ID:CD08678-03 Received: 12/14/20 13:32
Matrix: Surface Water Sampled: 12/14/20 10:20 Work Order: CD08678
Project: Upper Piedmont Stormwater Sampled By: Randy Conner
Classical Chemistry Parameters
^ - ENCO Cary certified analyte [NC 591]
Analvte rCAS Numberl Results
Flag
Units
DF
MOIL
2
Batch
Method
Analyzed
By
Notes
Chemical Oxygen Demand^ 22
mg/L
1
10
10
OL15001
SM 5220D-2011
12/15/20 11:00
JOC
pH^ 6.8
pH
1
1.0
1.0
OL15027
SM 4500H+B-2011
12/15/20 16:20
DMJ
Q-01
Temperature for pH (deg. C) 10
pH
1
OL15027
SM 4500H+B-2011
12/15/20 16:20
DMJ
Q-01
Total Suspended Solids^ 25
mg/L
2
5.0
5.0
OL17027
SM 2540D-2011
12/17/20 18:05
DMJ
Microbiological Parameters
^ - ENCO Cary certified analyte [NC 591]
Analvte rCAS Numberl Results
Flag
Units
DF
2
Batch
Method
Analyzed
_By
Notes
Coliform, Fecal^ 2.0
MPN/100 mL
1
1.0
OL14040
Colilert 18
12/15/20 10:54
MSE
Classical Chemistry Parameters
^ - ENCO Jackson ville certified analyte [NC 442]
Analvte rCAS Numberl Results
Flag
Units
DF
MOIL
2
Batch
Method
Analyzed
By
Notes
Oil & Grease (HEM-SGT) Non -Polar 2.70
U
mg/L
1
2.70
5.00
OL21001
EPA 1664B
12/21/20 15:05
LTS
laterial^
Description: Outfall 4 Lab Sample ID:CD08678-04 Received: 12/14/20 13:32
Matrix: Surface Water Sampled: 12/14/20 10:30 Work Order: CD08678
Project: Upper Piedmont Stormwater Sampled By: Randy Conner
Classical Chemistry Parameters
^ - ENCO Cary certified analyte [NC 591]
Analvte rCAS Numberl Results
Flag
Units
DF
MOIL
2
Batch
Method
Analyzed
By
Notes
Chemical Oxygen Demand' 65
mg/L
1
10
10
OL15001
SM 5220D-2011
12/15/20 11:00
JOC
pH^ 6.3
pH
1
1.0
1.0
OL15027
SM 4500H+B-2011
12/15/20 16:20
DMJ
Q-01
Temperature for pH (deg. C) 11
pH
1
OL15027
SM 4500H+B-2011
12/15/20 16:20
DMJ
Q-01
Total Suspended Solids^ 200
mg/L
10
25
25
OL17027
SM 2540D-2011
12/17/20 18:05
DMJ
Microbiological Parameters
^ - ENCO Cary certified analyte [NC 591]
Analvte rCAS Numberl Results
Flag
Units
DF
2
Batch
Method
Analyzed
_By
Notes
Coliform, Fecal^ 2800
MPN/100 mL
10
10
OL14040
Colilert 18
12/15/20 10:54
MSE
Classical Chemistry Parameters
^ - ENCO Jackson ville certified analyte [NC 442]
Analvte rCAS Numberl Results
Flag
Units
DF
MOIL
2
Batch
Method
Analyzed
By
Notes
Oil & Grease (HEM-SGT) Non -Polar 2.70
U
mg/L
1
2.70
5.00
OL21001
EPA 1664B
12/21/20 15:05
LTS
Material^
FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 5 Of 12

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ANALYTICAL RESULTS
Description: Outfall 5 Lab Sample ID:CD08678-05 Received: 12/14/20 13:32
Matrix: Surface Water Sampled:12/14/20 10:40 Work Order: CD08678
Project: Upper Piedmont Stormwater Sampled By: Randy Conner
Classical Chemistry Parameters
^ - ENCO Cary certified analyte [NC 591]
Analvte rCAS Numberl Results
Flag
Units
DF
MOIL
2
Batch
Method
Analyzed
By
Notes
Chemical Oxygen Demand^ 33
mg/L
1
10
10
OL18005
SM 5220D-2011
12/18/20 14:16
JOC
pH^ 6.4
pH
1
1.0
1.0
OL15027
SM 4500H+B-2011
12/15/20 16:20
DMJ
Q-01
Temperature for pH (deg. C) 10
pH
1
OL15027
SM 4500H+B-2011
12/15/20 16:20
DMJ
Q-01
Total Suspended Solids^ 64
mg/L
3.33
8.3
8.3
OL17027
SM 2540D-2011
12/17/20 18:05
DMJ
Microbiological Parameters
^ - ENCO Cary certified analyte [NC 591]
Analvte rCAS Numberl Results
Flag
Units
DF
2
Batch
Method
Analyzed
_By
Notes
Coliform, Fecal^ 550
MPN/100 mL
1
1.0
OL14040
Colilert 18
12/15/20 10:54
MSE
Classical Chemistry Parameters
^ - ENCO Jackson ville certified analyte [NC 442]
Analvte rCAS Numberl Results
Flag
Units
DF
MOIL
2
Batch
Method
Analyzed
By
Notes
Oil & Grease (HEM-SGT) Non -Polar 2.70
U
mg/L
1
2.70
5.00
OL21001
EPA 1664B
12/21/20 15:05
LTS
Material^
FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 6 Of 12

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QUALITY CONTROL DATA
Classical Chemistry Parameters - Quality Control
Batch OL15001 - Same
Blank (OL15001-BLKI) Prepared: 12/15/2020 08:10 Analyzed: 12/15/2020 11:00
Spike Source a/oREC RPD
Anala Result Flaa Q Units Level Result %REC Limits RPD Limit Notes
Chemical Oxygen Demand 10 U 10 mg/L
LCS (OL15001-BSI) Prepared: 12/15/2020 08:10 Analyzed: 12/15/2020 11:00
Spike
Source
%REC
RPD
Analvte
Result
Flao
Q
Units
Level
Result
%REC
Limits RPD
Limit Notes
Chemical Oxygen Demand
530
10
mg/L
500
106
90-110
Matrix Spike (OL15001-MSI)
Prepared: 12/15/2020 08:10 Analyzed: 12/15/2020 11:00
Source: CD03676-03
Spike
Source
%REC
RPD
Analvte
Result
Flaa
Q
Units
Level
Result
%REC
Limits RPD
Limit Notes
Chemical Oxygen Demand
540
10
mg/L
526
15
100
90-110
Matrix Spike Dup (OL15001-MSDI)
Prepared: 12/15/2020 08:10 Analyzed: 12/15/2020 11:00
Source: CD03676-03
Spike
Source
%REC
RPD
Analyte
Result
Flaa
Q
Units
Level
Result
%REC
Limits RPD
Limit Notes
Chemical Oxygen Demand
550
10
mg/L
526
15
101
90-110 1
5
Batch OLI5027 - NO PREP
LCS (OL15027-BSI) Prepared & Analyzed: 12/15/2020 16:20
Spike Source %REC
RPD
Analvte
Result Flao
Q
Units
Level Result %REC Limits
RPD Limit Notes
pH
7.0
1.0
pH
7.00 100 99-101
Duplicate (OL15027-DUP1)
Prepared & Analyzed: 12/15/2020 16:20
Source: CD02755-01
Spike Source %REC
RPD
Analvte
Result Flaa
Q
Units
Level Result %REC Limits
RPD Limit Notes
pH
5.4
1.0
pH
6.2
13 25
Batch OL17027 - NO PREP
Blank (OL17027-BLK3) Prepared & Analyzed: 12/17/2020 18:05
Spike Source %REC RPD
Anala Result Flaa Q Units Level Result %REC Limits RPD Limit Notes
Total Suspended Solids 2.5 U 2.5 mg/L
LCS (OL37027-BSI) Prepared & Analyzed: 12/17/2020 18:05
Spike Source %REC
RPD
Analvte
Result Flao
Q
Units
Level Result %REC Limits
RPD Limit Notes
Total Suspended Solids
100
2.5
mg/L
100 102 80-120
Duplicate (OL17027-DUP1)
Prepared & Analyzed: 12/17/2020 18:05
Source: CD10812-02
Spike Source %REC
RPD
Analvte
Result Flaa
Q
Units
Level Result %REC Limits
RPD Limit Notes
Total Suspended Solids
96
25
mg/L
100
5 20
FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 7 Of 12

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QUALITY CONTROL DATA
Classical Chemistry Parameters - Quality Control
Batch 0L17027 - NO PREP - Continued
Duplicate (OL17027-DUP2)
Prepared & Analyzed: 12/17/2020 18:05
Source: CD08678-01
Spike Source %REC
RPD
Anala Result Flaa
Q
Units
Level Result %REC Limits RPD
Limit Notes
Total Suspended Solids 540
83
mg/L
500 8
20
Batch 0L18005 - Same
Blank (OL18005-BLKI)
Prepared: 12/18/2020 09:08 Analyzed: 12/18/2020 14:16
Spike Source %REC
RPD
Analvte Result FFF`lau
Q
Units
Level Result %REC Limits RPD
Limit Notes
Chemical Oxygen Demand 10 U
10
mg/L
LCS (OL38005-BSI)
Prepared: 12/18/2020 09:08 Analyzed: 12/18/2020 14:16
Spike
Source
%REC
RPD
Analvte
Result
Flaa
Q
Units
Level
Result
%REC
Limits RPD
Limit Notes
Chemical Oxygen Demand
520
10
mg/L
500
104
90-110
Matrix Spike (OL18005-MSI)
Prepared: 12/18/2020 09:08 Analyzed: 12/18/2020 14:16
Source: CD08678-05
Spike
Source
%REC
RPD
Analvte
Result
Flaa
Q
Units
Level
Result
%REC
Limits RPD
Limit Notes
Chemical Oxygen Demand
550
10
mg/L
500
33
103
90-110
Matrix Spike Dup (OL18005-MSDI)
Prepared: 12/18/2020 09:08 Analyzed: 12/18/2020 14:16
Source: CD08678-05
Spike
Source
%REC
RPD
Analvte
Result
FFF`lao
Q
Units
Level
Result
%REC
Limits RPD
Limit Notes
Chemical Oxygen Demand
560
10
mg/L
500
33
105
90-110 2
5
Microbiological Parameters - Quality Control
Batch 0L14040 - NO PREP
Duplicate (OL14040-DUP1)
Prepared: 12/14/2020 15:06 Analyzed: 12/15/2020 10:54
Source: CD19697-02
Spike Source %REC
RPD
Analvte
Result FFFlau
Q
Units
Level Result %REC Limits RPD
Limit Notes
Coliform, Fecal
1.0 U
1.0
MPN/100 mL
1.0
25
Duplicate (OL14040-DUP2)
Prepared: 12/14/2020 15:06 Analyzed: 12/15/2020 10:54
Source: CD08678-03
Spike Source %REC
RPD
Anala
Result Flaa
Q
Units
Level Result %REC Limits RPD
Limit Notes
Coliform, Fecal
1.0
1.0
MPN/100 mL
2.0 67
25 QM-12
Classical Chemistry Parameters - Quality Control
Batch 0L21001 - EPA 1664E
Blank (OL21001-BLKI) Prepared: 12/21/2020 08:30 Analyzed: 12/21/2020 15:05
Spike Source %REC RPD
Analyte Result Flaa Q Units Level Result %REC Limits RPD Limit Notes
Oil & Grease (HEM-SGT) Non -Polar Material 2.70 U 5.00 mg/L
FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 8 Of 12

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QUALITY CONTROL DATA
Classical Chemistry Parameters - Quality Control
Batch 0L21001 - EPA 1664E - Continued
LCS (OL21001-BSI)
Prepared: 12/21/2020 08:30 Analyzed: 12/21/2020 15:05
Spike Source a/oREC
RPD
Anala
Result
Flaa
Q
Units
Level Result %REC Limits RPD
Limit
Notes
Oil & Grease (HEM-SGT) Non -Polar Material
89.9
5.00
mg/L
81.0 111 64-132
LCS Dup (OL21001-BSDI)
Prepared: 12/21/2020 08:30 Analyzed: 12/21/2020 15:05
Spike Source %REC
RPD
Analvte
Result
Flao
Q
Units
Level Result %REC Limits RPD
Limit
Notes
Oil & Grease (HEM-SGT) Non -Polar Material
64.9
5.00
mg/L
81.6 80 64-132 32
34
Matrix Spike (OL21001-MSI)
Prepared: 12/21/2020 08:30 Analyzed: 12/21/2020 15:05
Source: BD03986-01
Spike Source %REC
RPD
Anala
Result
Flaa
Q
Units
Level Result %REC Limits RPD
Limit
Notes
Oil & Grease (HEM-SGT) Non -Polar Material
101
5.00
mg/L
74.1 25.5 102 64-132
Batch 0L21004 - EPA 1664E
Blank (OL21004-BLKI)
Prepared: 12/21/2020 16:00 Analyzed: 12/22/2020 15:48
Spike Source %REC
RPD
Analvte
Result
Flaa
Q
Units
Level Result %REC Limits RPD
Limit
Notes
Oil & Grease (HEM-SGT) Non -Polar Material
2.70
U
5.00
mg/L
LCS (OL21004-BSI)
Prepared: 12/21/2020 16:00 Analyzed: 12/22/2020 15:48
Spike Source %REC
RPD
Analvte
Result
Flao
Q
Units
Level Result %REC Limits RPD
Limit
Notes
Oil & Grease (HEM-SGT) Non -Polar Material
95.5
5.00
mg/L
82.0 116 64-132
LCS Dup (OL21004-BSDI)
Prepared: 12/21/2020 16:00 Analyzed: 12/22/2020 15:48
Spike Source %REC
RPD
Anala
Result
Flaa
Q
Units
Level Result %REC Limits RPD
Limit
Notes
Oil & Grease (HEM-SGT) Non -Polar Material
86.4
5.00
mg/L
82.3 105 64-132 10
34
Matrix Spike (OL21004-MSI)
Prepared: 12/21/2020 16:00 Analyzed: 12/22/2020 15:48
Source: BD04006-02
Spike Source %REC
RPD
Anala
Result
Flaa
Q
Units
Level Result %REC Limits RPD
Limit
Notes
Oil & Grease (HEM-SGT) Non -Polar Material
61.4
5.00
mg/L
75.8 2.70 U 81 64-132
FINAL
This report relates only to the sample as
received by the
laboratory, and may only be reproduced in full.
Page 9 Of 12

(� �Eo
www.encolabs.com
FLAGS/NOTES AND DEFINITIONS
B The analyte was detected in the associated method blank.
D The sample was analyzed at dilution.
] 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.
QM-12 Precision between duplicate samples was outside acceptance limits.
FINAL This report relates only to the sample as received by the laboratory, and may only be reproduced in full. I Page 10 of 12

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Page 11 of 12 1

Sample Preservation Verification
ENCO Cary
Work Order: CDp8678 Project: Upper Piedmont Stormwater
Client: Republic Services of NC (RE014) Project #: Semi -Annual
Logged In: 14-Dec-20 13:50 Logged By: John C King
Preservation Check Performed By: Date/Time: 1 /4
CDO8678-01
Cont
Type
Pres (pH)
pH Checked !
In Control
DateMmeRequirement
PH Adjusted Adjusted
Reagent Used/Comments
C
250mLA+H2SO4
<2
Y I N/
Y/ N I A
D
250mLA+H2SO4
<2
Y I N I
Y I N I
E
250mLP+H2SO4
<2
Y/ N I NA
I Y/ 1 NA
C DO8678-02
Cont
Type
Pres (pH)
Requirement
pH Checked /
In Control
Date/Time
pH Adjusted Adjusted
Reagent Used/Comments
C
250mLA+H2SO4
<2
Y I N/ A
Y I N I A
D
250mLA+H2SO4
<2
Y I N I tYA
Y I N I I
E
250mLP+H2SO4
<2
Y/ N I NA
Y I I NA
CD08678-03
Cant
Type
Pres (pH)
Requirement
pH Checked 1
In Control
PH Adjusted Date/Time
Adjusted
Reagent Used/Comments
C
250mLA+H2SO4
<2
Y I N/ NA
Y I N I A
D
250mLA+H2SO4
<2
YIN /
Y / N I NA
E
250mLP+H2SO4
<2
Y/ N I NA
I Y I 1 NA
CDO8678-04
Cont
Type
yP
Pres (pH)
Requirement
pH Checked /
In Control
DateMme
PH Adjusted Adjusted
Reagent Used/Comments
C
250mLA+H2SO4
<2
Y I N/
Y I N /,AqA
D
250mLA+H2SO4
<2
Y I N/
Y I N
E
250mLP+H2SO4
<2
Y N / NA
Y / NA
CDO8678-05
Cont
Type
yp
Pres (pH)
Requirement
pH Checked /
In Control
DateMme
pH Adjusted Adjusted
Reagent Used/Comments
C
250mLA+H2SO4
<2
Y I N 1
Y/ N I1.1
D
250mLA+H2SO4
<2
Y/ N I A
Y I N I N
E
250mLP+H2SO4
<2
/ N 1 NA
Y I N I NA
Reagent Name ID
1
2
pH Strip ID:
Rea ent Name ID
3
4
Reagent Name ID
5
6
C:IELMNTIPrintlwko_PreservationCheck. rpt I Page 12 of 12