6013_Mecklenburg_NorthMeck_GreenwayWaste_CDLF_Infill_Phase1_MNARequest_FID1792329_20230504

A7F
,iii
Civil & Environmental Consultants, Inc.
March 27, 2023
Ms. Jaclynne Drummond
Hydrogeologist — Solid Waste Section
Division of Waste Management
North Carolina Department of Environmental Quality
2090 US 70 Highway
Swannanoa, North Carolina 28778
Dear Ms. Drummond:
Subject: Monitored Natural Attenuation Frequency Reduction Request
North Meek C&D Landfill
15300 Holbrooks Road, Huntersville, North Carolina
CEC Project 324-055
Civil & Environmental Consultants, Inc. (CEC), on behalf of Greenway Waste Solutions at North
Meek, LLC (Greenway), is pleased to submit request for a reduction in the frequency of monitored
natural attenuation (MNA) monitoring that is currently being conducted at Greenway's North
Meek C&D Landfill (NMLF) as part of an ongoing corrective action to address vinyl chloride and
1,4-dioxane exceedances in several site groundwater monitoring wells.
1.0 BACKGROUND
CEC, on behalf of GWS, submitted a Corrective Action Plan (CAP) for the NMLF in October
2019. The CAP proposed to use a combination of active landfill gas (LFG) extraction within the
waste mass and MNA at select monitoring wells. The CAP identified the following wells to
monitoring for NINA parameters: MW-10(i), MW-12(i), MW-12D(i), MW-4, MW-4A, MW-4D,
MW-4D-1, MW-6, MW-6D, MW-6D-1, MW-7, MW-7A, MW-7D, MW-9, MW-11A, and MW-
11D-1. The following MNA parameters are measured on a semi-annual basis:
• Dissolved Oxygen;
• Nitrate;
• Iron;
• Sulfate;
• Sulfide;
• Methane;
• Ethane, Ethene;
• Oxidation Reduction Potential;
• Total Organic Carbon, Biochemical Oxygen
Demand, Chemical Oxygen Demand;
• Carbon Dioxide;
• Alkalinity;
• Chloride
• Hydrogen;
• Volatile Fatty Acids
• pH;
• Temperature;
• Conductivity; and
• Turbidity.
3701 Arco Corporate Drive, Suite 400 1 Charlotte, NC 28273 1 p: 980-237-0373 f: 980-237-0372 1 www.cecinc.com

Ms. Jaclynne Drummond — North Carolina Department of Environmental Quality
CEC Project 324-055
Page 2
March 27, 2023
The CAP was approved by the North Carolina Department of Environmental Quality (NCDEQ)
Division of Waste Management — Solid Waste Section (Section) in a letter dated October 3, 2019.
Section 5.0 of the CAP specifies that, after the completion of two years of baseline monitoring,
GWS may petition the Section to remove specific MNA parameters and/or MNA wells from the
schedule, and/or reduce the frequency of MNA monitoring. Discussions with Section personnel
have indicated that current Section policy is to not remove MNA parameters and/or wells;
however, a reduction in frequency of MNA sampling, based on results of previous monitoring
events, remains a possibility.
2.0 SUMMARY OF MONITORING DATA
GWS personnel conducted quarterly baseline MNA sampling between April 2020 and July 2021
— six monitoring events, three of which (April 2020, October 2020, and April 2021) coincided with
the standard semi-annual water quality monitoring events. Tables summarizing the results for
MNA parameters for each monitoring well are included in Attachment A.
MNA constituent detections in all MNA wells is relatively stable, with some apparently minor
seasonal fluctuations, with the exception of dissolved hydrogen. Of the MNA constituents with
groundwater standards established in 15A NCAC 2L — iron (300 µg/L), chloride (250,000 µg/L),
nitrate (as N) (10,000 µg/L), sulfate (250,000 µg/L), and acetic acid (5,000 µg/L) — only iron has
been consistently detected above the 2L standard, and none of the MNA constituents have an
established Interim Maximum Allowable Concentration (IMAC).
Dissolved hydrogen results appear to vary significantly in a number of MNA wells, most notably
MW-6, MW-6D, MW-6D-1, MW-7, MW-7A, and MW-7D. The pH values measured on these
wells during the purging process have consistently been between 6.0 and 7.0 standard units, and
typically between 6.0 and 6.5 standard units, indicating slightly acidic groundwater conditions.
This is consistent with pH measurements site -wide and representative of naturally occurring
groundwater conditions in the region.
3.0 MNA CONSTITUENT MONITORING FREQUENCY REDUCTION
CEC and GWS are requesting a reduction in the frequency of the monitoring of MNA constituents
to once every three years during both semi-annual monitoring events (i.e., the next rounds of MNA
monitoring would be conducted in the Spring and Fall of 2025). Detection and assessment
monitoring currently underway at the facility would continue on the current schedule.
Note this reduced sampling frequency would only apply to MNA parameters that are not also
included in the current detection and assessment monitoring lists. These include:
• Nitrate; • Carbon Dioxide;
• Methane; • Chloride
Civil & Environmental Consultants, Inc.

Ms. Jaclynne Drummond — North Carolina Department of Environmental Quality
CEC Project 324-055
Page 3
March 27, 2023
• Ethane, Ethene; • Hydrogen;
• Total Organic Carbon, Biochemical Oxygen • Volatile Fatty Acids
Demand, Chemical Oxygen Demand;
4.0 CLOSING
CEC and GWS appreciate your consideration of this request to reduce the frequency of MNA
monitoring at the North Meek C&D Landfill. A Corrective Action Effectiveness Report (CAER)
is required to be submitted every five years while a corrective action is in place. The current
corrective action began in April 2020; therefore, the first CAER is due following the April 2025
semiannual water quality monitoring event.
Please do not hesitate to contact Donald at 704-221-4947 or dcobbececinc.com if you have any
questions or concerns.
Sincerely,
CIVIL & ENVIRONMENTAL CONSULTANTS, INC.
Donald Cobb, P.G.
Project Manager
Attachment
Bruce D. Reilly, P.E.
Senior Project Manager
Civil & Environmental Consultants, Inc.

ATTACHMENT A
MNA CONSTITUENT DATA TABLES
Civil & Environmental Consultants, Inc.

Dissolved Hydrogen
Well ID
4/21/2020
7/22/2020
1/26/2021
4/19/2021
7/26/2021
10/13/2022
MW-4
6.9
17 J
3.7
560
50 J
22
MW-4A
14
1.9 U
110
4.5
210
36
MW-4D
74
14 J
54
36
200
180
MW-4D-1
31
1.9 U
16
6.6
170
350
MW-6
6.2
1100
1000
690
630
48
MW-6D
5.0
1100
150
5400
52 J
48
MW-6D-1
3.8
17 J
1500
12
130 J
31
MW-7
-
1.9 U
550
<190
120 J
740
MW-7A
-
9.5 J
280
<1.9
1100
420
MW-7D
-
1.9 U
520
9.6
37
48
MW-9
2.4
6.2 J
0.87 J
<1.9
1.8 J
16
MW-10i
-
6.6 J
24
9.0
58 J
-
MW-11A
2.4
7.4 J
2.2
2.4
2.2
17
MW-11D-1
2.3
7.3 J
1.5 J
<1.9
1.8 J
16
MW-12i
2.0
6.1 J
0.95 J
<1.9
1.8 J
17
MW-12Di
1.4
6.5 J
6.6
<1.9
29 J
16
Concentrations in nM
J Flag = Results between MDL and LOQ
U = Not detected above LOQ

MW-4
Constituent
4/21/2020
7/22/2020
10/8/2020
1/26/2021
4/19/2021
7/27/2021
10/18/2021
4/26/2022
10/18/2022
Ethane
0.00071
0.00099
0.00099
0.00099
0.00099
0.0018
0.0018
0.00030
0.00030
Ethylene
0.0016
0.00082
0.00082
0.00082
0.00095
0.0018
0.0018
0.0010
0.00066
Methane
1.6
0.89
1.2
0.82
1.5
0.40
1.2
0.54
0.57
Carbon dioxide
430
180
690
500
580
430
530
350
370
Alkalinity
310
300
280
270
290
-
300
280
290
Biological Oxygen Demand
2.0
2.0
2.3
2.0
2.0
2.0
2.0
2.0
2.0
Chemical Oxygen Demand
20
19
21
16
15
18
21
13
12
Iron, Total Recoverable
1.3
1.4
0.83
0.97
1.4
0.2
1.2
0.65
0.5
Sulfide
0.23
0.78
0.81
0.23
0.23
0.23
0.23
0.81
0.81
Chloride
17
21
20
17
22
21.0
18
18
15
Nitrate (as N)
-
0.068
0.077
0.068
68
0.068
0.093
-
0.023
Sulfate
18
19
19
18
21
25.0
21
20
18
Total Organic Carbon -.Duplicates
5.0
5.4
5.3
4.6
5.4
6.2
7.6
5.0
4.8
Acetic Acid
5.8
0.58
1.5
2.9
0.58
0.58
0.58
0.29
0.29
Formic -acid
5.2
0.52
1.3
2.6
0.52
0.52
0.52
0.26
0.26
Lactic acid
6.2
0.62
1.6
3.1
0.62
0.62
0.62
2.8
0.31
n-Butyric Acid
5.2
0.52
1.3
2.6
0.52
0.52
0.52
0.26
0.26
Propionic acid
7.0
0.70
1.8
3.5
0.70
0.70
0.70
0.35
0.35
Pyruvic Acid
7.4
0.74
1.9
3.7
0.74
0.74
0.74
0.37
0.37
Concentrations in mg/L

M W-4A
Constituent
4/21/2020
7/22/2020
10/8/2020
1/26/2021
4/19/2021
7/27/2021
10/18/2021
4/25/2022
10/14/2022
Ethane
0.00071
0.00099
0.00099
0.00099
0.00099
0.0018
0.0018
0.00030
0.00030
Ethylene
0.00053
0.00082
0.00082
0.00082
0.00082
0.0018
0.0018
0.00031
0.00031
Methane
0.094
0.053
0.16
0.019
0.086
0.020
0.015
0.0047
0.00081
Carbon dioxide
250
290
440
290
450
290
340
330
300
Alkalinity
140
210
190
150
180
-
210
200
190
Biological Oxygen Demand
-
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
Chemical Oxygen Demand
18
15
14
11
8.8
13
18
11
5.0
Iron, Total Recoverable
1.3
6.7
0.70
8.7
2.0
0.79
8
0.66
0.75
Sulfide
0.23
0.78
0.81
0.23
0.26
0.23
0.23
0.81
0.83
Chloride
9.8
14
15
10
11
13
2.6
12
11
Nitrate (as N)
-
0.24
1.1
0.51
0.62
0.46
0.23
-
0.11
Sulfate
8.9
13
14
8.5
9.8
15
15
13
11
Total Organic Carbon - Duplicates
2.0
2.6
3.1
2.4
3.8
3.3
4.1
3.2
3.5
Acetic Acid
1.5
0.58
1.5
2.9
0.29
0.29
0.29
0.29
0.29
Formic -acid
1.3
0.52
1.3
2.6
0.26
0.26
0.26
0.26
0.26
Lactic acid
1.6
0.62
1.6
3.1
0.34
0.31
0.31
3.3
0.31
n-Butyric Acid
1.3
0.52
1.3
2.6
0.26
0.26
0.26
0.26
0.26
Propionic acid
1.8
0.70
1.8
3.5
0.35
0.35
0.35
0.35
0.35
Pyruvic Acid
1.9
0.74
1.9
3.7
0.37
0.37
0.37
0.37
0.37
Concentrations in mg/L

MW-4D-1
Constituent
4/21/2020
7/22/2020
10/8/2020
1/26/2021
4/19/2021
7/27/2021
10/18/2021
4/25/2022
10/14/2022
Ethane
0.0029
0.0023
0.0014
0.00099
0.00099
0.0018
0.0018
0.00039
0.00030
Ethylene
0.0012
0.0013
0.0013
0.00082
0.00082
0.0018
0.0018
0.00044
0.00071
Methane
8.4
8.5
6.5
2.2
0.69
1.7
1.4
2.1
0.87
Carbon dioxide
24
25
26
22
25
23
19
12
15
Alkalinity
220
210
190
21
24
-
31
54
26
Biological Oxygen Demand
-
9.1
8.0
4.6
2.0
5.0
2.0
2.0
2.0
Chemical Oxygen Demand
18
10
10
36
32
42
25
5.0
18
Iron, Total Recoverable
1.3
1.7
1.5
1.6
1.2
2.2
0.86
1.6
1
Sulfide
0.23
0.78
0.81
0.23
0.51
0.57
0.23
0.81
1.2
Chloride
11
10
12
0.49
0.40
0.55
0.44
0.93
0.37
Nitrate (as N)
-
0.068
0.068
0.34
0.068
0.068
0.068
-
0.023
Sulfate
1.8
8.7
13
0.96
1.2
0.84
0.17
1.4
0.4
Total Organic Carbon - Duplicates
2.1
2.2
2.0
7.3
6.7
5.2
6.5
6.4
5.6
Acetic Acid
1.5
0.58
1.5
1.5
0.29
0.29
0.29
0.29
0.29
Formic -acid
1.3
0.52
1.3
1.3
0.26
0.26
0.26
0.26
0.26
Lactic acid
1.6
0.62
1.6
1.6
0.69
0.31
0.31
5.5
0.31
n-Butyric Acid
1.3
0.52
1.3
1.3
0.26
0.26
0.26
0.26
0.26
Propionic acid
1.8
0.70
1.8
1.8
0.35
0.35
0.35
0.35
0.35
Pyruvic Acid
1.9
0.74
1.9
1.9
0.37
0.37
0.37
0.37
0.37
Concentrations in mg/L

MW-6
Constituent
4/21/2020
7/22/2020
10/8/2020
1/26/2021
4/19/2021
7/26/2021
10/19/2021
4/21/2022
10/14/2022
Ethane
0.00071
0.00099
0.00099
0.00099
0.00099
0.0018
0.0018
0.00030
0.00030
Ethylene
0.00053
0.00082
0.00082
0.00082
0.00082
0.0018
0.0018
0.00031
0.00031
Methane
0.43
0.0035
0.59
0.0017
0.64
0.0016
0.72
0.0012
0.00057
Carbon dioxide
340
47
420
68
520
74
450
90
81
Alkalinity
610
260
590
260
640
420
670
350
340
Biological Oxygen Demand
2.0
2.0
2.0
2.0
2.0
2.0
2
4.5
2.0
Chemical Oxygen Demand
45
21
54
16
64
19
53
35
16
Iron, Total Recoverable
3.1
0.46
1.1
3.5
0.57
0.15
0.33
1.3
0.2
Sulfide
0.23
0.78
0.81
0.23
0.23
0.23
0.23
0.89
0.96
Chloride
33
62
35
68
25
41
27
46
45
Nitrate (as N)
0.34
4.5
0.21
3.9
0.83
1.9
0.17
-
1.7
Sulfate
56
44
110
50
100
54
120
48
46
Total Organic Carbon - Duplicates
16
4.7
17
5.0
22
4.4
21
6.3
5.3
Acetic Acid
1.5
0.29
1.5
0.58
1.5
1.5
1.5
0.58
0.29
Formic -acid
1.3
0.26
1.3
0.52
1.3
1.3
1.3
0.52
0.26
Lactic acid
1.6
0.31
1.6
0.62
1.6
1.6
1.6
2.6
0.31
n-Butyric Acid
1.3
0.26
1.3
0.52
1.3
1.3
1.3
0.52
0.26
Propionic acid
1.8
130
1.8
18
1.8
1.8
1.8
0.70
0.35
Pyruvic Acid
1.9
0.37
1.9
0.74
1.9
1.9
1.9
0.74
0.37
Concentrations in mg/L

MW-6D
Constituent
4/21/2020
7/22/2020
10/8/2020
1/26/2021
4/19/2021
7/27/2021
10/19/2021
4/21/2022
10/12/2022
Ethane
0.00071
0.00099
0.00099
0.00099
0.00099
0.0018
0.0018
0.00030
0.00030
Ethylene
0.00053
0.0026
0.00082
0.0026
0.00082
0.0018
0.0018
0.00031
0.00031
Methane
0.69
0.89
0.64
1.4
0.64
0.49
0.65
0.97
0.82
Carbon dioxide
340
410
520
420
520
390
470
400
480
Alkalinity
600
680
640
580
640
-
680
5
650
Biological Oxygen Demand
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
Chemical Oxygen Demand
51
56
64
58
64
56
53
50
34
Iron, Total Recoverable
0.88
4.2
0.57
4.3
0.57
0.21
0.27
0.71
0.52
Sulfide
0.23
0.78
0.23
0.23
0.23
0.23
0.23
0.89
0.81
Chloride
30
24
25
27
25
28
26
32
28
Nitrate (as N)
0.068
0.068
83
0.068
0.83
0.080
0.12
-
0.023
Sulfate
71
81
100
110
100
120
120
120
110
Total Organic Carbon - Duplicates
19
20
22
20
22
17
21
18
16
Acetic Acid
5.8
0.29
1.5
1.5
1.5
1.5
1.5
1.5
0.29
Formic -acid
5.2
0.26
1.3
1.3
1.3
1.3
1.3
1.3
0.26
Lactic acid
6.2
0.31
1.6
1.6
1.6
1.6
1.6
5.2
0.31
n-Butyric Acid
5.2
0.26
1.3
1.3
1.3
1.3
1.3
1.3
0.26
Propionic acid
7.0
18
1.8
18
1.8
1.8
1.8
1.8
0.35
Pyruvic Acid
7.4
0.37
1.9
1.9
1.9
1 1.9
1.9
1.9
0.37
Concentrations in mg/L

MW-6D-1
Constituent
4/21/2020
7/22/2020
10/8/2020
1/26/2021
4/19/2021
7/26/2021
10/19/2021
4/21/2022
10/12/2022
Ethane
0.00071
0.0018
0.00099
0.00099
0.00099
0.0018
0.0018
0.00030
0.00030
Ethylene
0.0031
0.015
0.0061
0.0045
0.0038
0.0018
0.0024
0.0020
0.00047
Methane
0.98
2.2
1.9
2.5
2.3
0.83
2.3
0.90
1.0
Carbon dioxide
110
170
160
170
170
130
170
110
160
Alkalinity
650
660
620
610
610
640
660
630
640
Biological Oxygen Demand
2.0
3.1
2.0
3.1
2.7
2.3
2.1
2.3
5.9
Chemical Oxygen Demand
21
29
24
21
22
28
25
25
10
Iron, Total Recoverable
7.3
7.8
9.6
12
7.5
7.6
5.2
9.5
5.8
Sulfide
0.23
0.78
0.81
0.23
0.23
0.23
0.23
1.1
0.81
Chloride
25
24
26
25
24
27
23
26
23
Nitrate (as N)
0.082
0.068
0.072
0.068
0.085
0.068
0.097
-
0.023
Sulfate
13
11
15
15
16
19
17
18
19
Total Organic Carbon - Duplicates
7.3
7.4
7.0
7.2
7.5
6.7
7.7
9.0
7.1
Acetic Acid
1.5
0.29
1.5
0.58
1.5
1.5
1.5
1.5
0.29
Formic -acid
1.3
0.26
1.3
0.52
1.3
1.3
1.3
1.3
0.26
Lactic acid
1.6
0.31
1.6
0.62
1.6
1.6
1.6
1.6
0.31
n-Butyric Acid
1.3
0.26
1.3
0.52
1.3
1.3
1.3
1.3
0.26
Propionic acid
1.8
280
1.8
18
1.8
1.8
1.8
1.8
0.35
Pyruvic Acid
1.9
0.37
1.9
0.74
1.9
1.9
1.9
1.9
0.37
Concentrations in mg/L

MW-7
Constituent
4/21/2020
7/22/2020
10/8/2020
1/26/2021
4/19/2021
7/26/2021
10/20/2021
4/25/2022
10/18/2022
Ethane
0.00071
0.00099
0.00099
0.00099
0.00099
0.0018
0.0018
0.00042
0.00036
Ethylene
0.00053
0.00082
0.00082
0.00082
0.00089
0.0018
0.0018
0.0015
0.0011
Methane
3.6
5.0
6.7
7.4
6.8
5.6
9.0
4.9
4.4
Carbon dioxide
210
270
300
310
250
260
370
320
370
Alkalinity
570
600
580
590
620
660
700
670
700
Biological Oxygen Demand
12.0
3.5
7.9
6.5
6.5
6.4
7.0
2.0
2.9
Chemical Oxygen Demand
13
9.5
10
10
14
11
10
6.8
5.0
Iron, Total Recoverable
0.54
0.73
0.49
0.49
0.27
1.4
0.33
0.71
0.98
Sulfide
0.23
0.78
0.81
0.23
0.23
0.23
0.23
0.81
0.81
Chloride
45
46
48
48
40
46
41
39
39
Nitrate (as N)
0.068
0.16
0.17
0.068
0.11
0.090
0.091
-
0.023
Sulfate
28
26
29
30
27
30
27
24
24
Total Organic Carbon - Duplicates
3.8
3.2
2.9
3.4
3.7
3.2
3.4
3.5
3.7
Acetic Acid
1.5
0.29
1.5
0.58
1.5
1.5
1.5
0.29
0.29
Formic -acid
1.3
0.26
1.3
0.52
1.3
1.3
1.3
0.26
0.26
Lactic acid
1.6
0.31
1.6
0.62
1.6
1.6
1.6
3.1
0.31
n-Butyric Acid
1.3
0.26
1.3
0.52
1.3
1.3
1.3
0.26
0.26
Propionic acid
1.8
0.35
1.8
18
1.8
1.8
1.8
0.35
0.35
Pyruvic Acid
1.9
0.37
1.9
0.74
1.9
1.9
1.9
0.37
0.37
Concentrations in mg/L

M W-7A
Constituent
4/21/2020
7/22/2020
10/8/2020
1/26/2021
4/19/2021
7/26/2021
10/20/2021
4/25/2022
10/18/2022
Ethane
0.00071
0.00099
0.00099
0.00099
0.00099
0.0018
0.0018
0.00039
0.00030
Ethylene
0.00053
0.00082
0.00082
0.00082
0.00082
0.0018
0.0018
0.00031
0.00077
Methane
5.0
3.2
4.3
6.2
6.6
3.2
6.9
4.4
3.5
Carbon dioxide
260
300
310
330
340
240
360
360
330
Alkalinity
400
420
400
400
450
470
500
470
470
Biological Oxygen Demand
5.7
2.0
3.8
4.9
4.2
4.7
2.0
2.0
2.5
Chemical Oxygen Demand
11
7.4
6.0
10
10
9.6
9.2
5.0
5.0
Iron, Total Recoverable
1.8
0.19
0.50
0.16
0.069
0.32
0.11
1.3
0.7
Sulfide
0.23
0.79
0.81
0.23
0.23
0.23
0.23
0.81
0.81
Chloride
42
43
47
41
39
48
41
41
36
Nitrate (as N)
0.17
0.17
0.15
0.068
0.13
0.092
0.098
-
0.028
Sulfate
25
24
26
23
24
28
23
21
18
Total Organic Carbon - Duplicates
3.0
2.9
2.4
3.0
3.3
2.7
2.9
3.1
3.1
Acetic Acid
1.5
0.29
1.5
0.58
1.5
1.5
1.5
0.29
0.29
Formic -acid
1.3
0.26
1.3
0.52
1.3
1.3
1.3
0.26
0.26
Lactic acid
1.6
0.31
1.6
0.62
1.6
1.6
1.6
2.7
0.31
n-Butyric Acid
1.3
0.26
1.3
0.52
1.3
1.3
1.3
0.26
0.26
Propionic acid
1.8
0.35
1.8
18
1.8
1.8
1.8
0.35
0.35
Pyruvic Acid
1.9
0.37
1.9
0.74
1.9
1.9
1.9
0.37
0.37
Concentrations in mg/L

MW-7D
Constituent
4/21/2020
7/22/2020
10/8/2020
1/26/2021
4/19/2021
7/26/2021
10/20/2021
4/25/2022
10/18/2022
Ethane
0.0030
0.00099
0.00099
0.00099
0.00099
0.0018
0.0018
0.00061
0.00030
Ethylene
0.0044
0.00082
0.00082
0.00082
0.00082
0.0018
0.0018
0.00031
0.0013
Methane
4.5
4.4
5.0
7.6
8.0
5.8
9.0
6.0
3.4
Carbon dioxide
200
240
210
280
280
220
340
310
180
Alkalinity
500
540
410
550
580
600
650
570
530
Biological Oxygen Demand
2.3
2.0
2.0
2.0
2.3
3.4
5.0
2.0
3.1
Chemical Oxygen Demand
8.2
9.0
7.8
18
20
15
9.7
13
6.7
Iron, Total Recoverable
9.9
1.8
1.0
0.58
0.18
0.5
0.23
0.58
1.3
Sulfide
0.23
0.78
0.81
1.7
0.23
0.23
0.23
0.81
0.83
Chloride
45
47
48
51
47
53
52
46
44
Nitrate (as N)
0.15
0.16
0.68
0.068
0.098
0.068
0.072
-
0.023
Sulfate
33
28
45
28
29
31
29
31
32
Total Organic Carbon - Duplicates
3.4
3.8
2.2
4.4
4.6
3.7
4.7
4.6
2.6
Acetic Acid
1.5
0.29
1.5
0.58
1.5
1.5
1.5
0.29
0.29
Formic -acid
1.3
0.26
1.3
0.52
1.3
1.3
1.3
0.26
0.26
Lactic acid
1.6
0.31
1.6
0.62
1.6
1.6
1.6
3.2
0.31
n-Butyric Acid
1.3
0.26
1.3
0.52
1.3
1.3
1.3
0.26
0.26
Propionic acid
1.8
0.35
1.8
18
1.8
1.8
1.8
0.35
0.35
Pyruvic Acid
1.9
0.37
1.9
0.74
1.9
1.9
1.9
0.37
0.37
Concentrations in mg/L

MW-9
Constituent
4/21/2020
7/22/2020
10/8/2020
1/26/2021
4/19/2021
7/28/2021
10/18/2021
4/20/2022
10/10/2022
Ethane
0.00071
0.00099
0.00099
0.00099
0.00099
0.0018
0.0018
0.00030
0.00030
Ethylene
0.00053
0.00082
0.00082
0.00082
0.00082
0.0018
0.0018
0.00031
0.00031
Methane
0.00056
0.00047
0.00047
0.00047
0.00047
0.0016
0.0016
0.00057
0.00057
Carbon dioxide
87
110
130
100
96
110
120
110
-
Alkalinity
54
55
52
47
57
54
62
47
50
Biological Oxygen Demand
2.0
2.0
2.0
2.0
2.0
2.0
2.0
3.6
2.0
Chemical Oxygen Demand
6.0
12
8.5
6.0
6.2
6.0
9.4
5.1
5.0
Iron, Total Recoverable
0.12
1.2
0.22
0.047
0.17
0.096
0.13
0.026
0.026
Sulfide
0.23
0.79
0.81
0.23
0.23
0.23
0.23
0.81
0.81
Chloride
18
19
20
16
19
18
29
11
12
Nitrate (as N)
0.29
0.27
0.32
0.26
0.32
0.33
0.33
-
15
Sulfate
17
16
19
16
15
16
17
18
0.26
Total Organic Carbon - Duplicates
1.0
1.0
1.1
0.83
0.98
0.97
0.56
0.79
1.7
Acetic Acid
1.5
0.29
1.5
0.58
0.29
0.29
0.29
0.29
0.29
Formic -acid
1.3
0.26
1.3
0.52
0.26
0.26
0.26
0.26
0.26
Lactic acid
1.6
0.31
1.6
0.62
0.31
0.31
0.31
3.0
0.31
n-Butyric Acid
1.3
0.26
1.3
0.52
0.26
0.26
0.26
0.26
0.26
Propionic acid
1.8
0.35
1.8
7
0.35
0.35
0.35
0.35
0.35
Pyruvic Acid
1.9
0.37
1.9
0.74
0.37
0.37
0.37
0.37
0.37
Concentrations in mg/L

MW-10i
Constituent
4/21/2020
7/22/2020
10/8/2020
1/26/2021
4/19/2021
7/27/2021
10/20/2021
4/19/2022
10/12/2022
Ethane
-
0.00099
0.00099
0.00099
0.00099
0.0018
0.0018
0.00030
0.00030
Ethylene
0.00082
0.00082
0.00082
0.00082
0.0018
0.0018
0.00031
0.00032
Methane
0.00047
0.0010
0.00047
0.00047
0.0016
0.0016
0.00064
0.00057
Carbon dioxide
140
180
160
180
170
180
190
220
Alkalinity
300
280
270
290
-
310
290
300
Biological Oxygen Demand
2.0
2.0
2.0
2.0
2.0
2.0
3.6
2.0
Chemical Oxygen Demand
12
7.4
9.4
6.9
14
7.7
10
5.0
Iron, Total Recoverable
2.4
0.79
2.4
2.3
15
2.9
5.1
0.37
Sulfide
0.78
0.81
0.23
0.23
0.23
0.23
0.86
0.81
Chloride
12
15
18
15
17
11
17
11
Nitrate (as N)
2.5
2.7
2.6
2.4
2.4
1.8
-
1.8
Sulfate
110
130
130
100
110
110
110
86
Total Organic Carbon - Duplicates
3.1
2.7
3.0
2.6
2.5
4.3
3.3
2.1
Acetic Acid
0.29
1.5
0.58
0.58
0.58
1.5
0.58
0.29
Formic -acid
0.26
1.3
0.52
0.52
0.52
1.3
0.52
0.26
Lactic acid
0.31
1.6
0.62
0.62
0.62
1.6
2.8
0.31
n-Butyric Acid
0.26
1.3
0.52
0.52
0.52
1.3
0.52
0.26
Propionic acid
0.35
1.8
7.0
0.70
0.70
1.8
0.70
0.35
Pyruvic Acid
0.37
1.9
0.74
0.74
0.74
1.9
0.74
0.37
Concentrations in mg/L

M W-11A
Constituent
4/21/2020
7/22/2020
10/8/2020
1/26/2021
4/19/2021
7/28/2021
10/19/2021
4/20/2022
10/11/2022
Ethane
0.00071
0.00099
0.00099
0.00099
0.00099
0.0018
0.0018
-
0.00030
Ethylene
0.00053
0.00082
0.00082
0.00082
0.00082
0.0018
0.0018
0.00031
Methane
0.00056
0.0012
0.00047
0.00047
0.00047
0.0016
0.025
0.023
Carbon dioxide
34
39
46
50
39
44
320
290
Alkalinity
21
24
22
20
20
22
470
31
570
Biological Oxygen Demand
2.0
2.0
2.0
2.0
2.0
2.0
2.0
-
2.0
Chemical Oxygen Demand
8.9
6.0
7.4
6.0
6.0
6.0
30
-
22
Iron, Total Recoverable
0.047
0.33
0.047
0.047
0.047
0.047
0.025
0.026
0.026
Sulfide
0.23
0.79
0.81
0.23
0.23
0.23
0.23
-
0.83
Chloride
2.1
2.5
2.5
2.3
2.0
2.1
24
2.3
24
Nitrate (as N)
-
2.3
2.5
3.3
2.2
2.5
0.37
-
42
Sulfate
13
13
16
12
13
13
43
13
0.18
Total Organic Carbon - Duplicates
0.74
0.77
0.57
0.62
0.75
0.68
8.7
-
8.0
Acetic Acid
1.5
0.58
1.5
0.58
0.29
0.29
1.5
0.29
Formic -acid
1.3
0.52
1.3
0.52
0.26
0.26
1.3
0.26
Lactic acid
1.6
0.62
1.6
0.62
0.37
0.31
1.6
0.31
n-Butyric Acid
1.3
0.52
1.3
0.52
0.26
0.26
1.3
0.26
Propionic acid
1.8
3.0
1.8
0.70
0.35
0.35
1.8
0.35
Pyruvic Acid
1.9
0.74
1.9
0.74
0.37
0.37
1.9
0.37
Concentrations in mg/L

MW-11D-1
Constituent
4/21/2020
7/22/2020
10/8/2020
1/26/2021
4/19/2021
7/28/2021
10/19/2021
4/20/2022
10/11/2022
Ethane
0.00071
0.00099
0.00099
0.00099
0.00099
0.0018
0.0018
0.00030
0.00030
Ethylene
0.00053
0.00082
0.00082
0.00082
0.00082
0.0018
0.0018
0.00031
0.00031
Methane
0.00056
0.0021
0.00047
0.010
0.0084
0.0016
0.0016
0.00057
0.00057
Carbon dioxide
43
160
79
180
170
54
69
34
47
Alkalinity
300
480
280
460
470
270
290
290
320
Biological Oxygen Demand
-
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
Chemical Oxygen Demand
10
19
12
19
15
6.0
14
5.0
7.0
Iron, Total Recoverable
-
0.17
0.47
0.29
0.084
0.047
0.025
0.026
0.026
Sulfide
0.23
0.78
0.81
0.23
0.23
0.23
0.23
0.81
0.83
Chloride
17
24
17
26
20
14
15
16
16
Nitrate (as N)
-
0.068
1.4
0.068
0.072
1.6
1.1
-
29
Sulfate
32
45
36
49
38
32
30
31
1.4
Total Organic Carbon - Duplicates
3.9
6.7
3.5
6.6
7.2
3.2
3.1
3.3
3.5
Acetic Acid
1.5
0.29
1.5
0.58
1.5
0.58
0.58
0.58
0.29
Formic -acid
1.3
0.26
1.3
0.52
1.3
0.52
0.52
0.52
0.26
Lactic acid
1.6
0.31
1.6
0.62
1.6
0.62
0.62
3.9
0.31
n-Butyric Acid
1.3
0.26
1.3
0.52
1.3
0.52
0.52
0.52
0.26
Propionic acid
1.8
0.35
1.8
18
1.8
0.70
0.70
0.70
0.35
Pyruvic Acid
1.9
0.37
1.9
0.74
1.9
0.74
0.74
0.74
0.37
Concentrations in mg/L

MW-12i
Constituent
4/21/2020
7/22/2020
10/8/2020
1/26/2021
4/19/2021
7/28/2021
10/18/2021
4/19/2022
10/10/2022
Ethane
0.00071
0.00099
0.00099
0.00099
0.00099
0.0018
0.0018
0.00030
0.00030
Ethylene
0.00053
0.00082
0.00082
0.00082
0.00082
0.0018
0.0018
0.00056
0.00031
Methane
0.56
0.53
0.79
0.87
0.71
0.50
0.81
0.69
0.63
Carbon dioxide
330
400
500
430
390
320
420
430
-
Alkalinity
450
610
590
560
610
640
670
570
630
Biological Oxygen Demand
2.0
2.3
2.8
2.2
2.0
2.0
2.0
2.0
2.0
Chemical Oxygen Demand
36
40
44
44
36
43
51
72
35
Iron, Total Recoverable
0.3
0.57
0.17
0.14
0.14
0.16
0.095
0.099
0.093
Sulfide
0.23
0.81
0.81
0.23
0.23
0.23
0.23
0.81
0.81
Chloride
38
36
120
40
37
36
39
38
33
Nitrate (as N)
0.14
0.068
0.070
0.068
0.073
0.068
0.1
-
0.023
Sulfate
100
100
540
110
120
130
140
110
120
Total Organic Carbon - Duplicates
12
13
14
13
15
14
16
12
12
Acetic Acid
1.5
0.58
1.5
0.58
1.5
1.5
1.5
1.5
0.29
Formic -acid
1.3
0.52
1.3
0.52
1.3
1.3
1.3
1.3
0.26
Lactic acid
1.6
1.6
1.6
0.62
1.8
1.6
1.6
1.6
0.31
n-Butyric Acid
1.3
0.52
1.3
0.52
1.3
1.3
1.3
1.3
0.26
Propionic acid
1.8
0.70
1.8
18
1.8
1.8
1.8
1.8
0.35
Pyruvic Acid
1.9
0.74
1.9
0.74
1.9
1.9
1.9
1.9
0.37
Concentrations in mg/L

MW-12Di
Constituent
4/21/2020
7/22/2020
10/8/2020
1/26/2021
4/19/2021
7/28/2021
10/18/2021
4/19/2022
10/10/2022
Ethane
0.00071
0.00099
0.00099
0.00099
0.00099
0.0018
0.0018
0.0003
0.00031
Ethylene
0.00053
0.0009
0.0023
0.00082
0.00082
0.0018
0.0018
0.0015
0.0016
Methane
0.50
0.61
0.94
1.1
0.53
0.70
0.79
0.75
0.82
Carbon dioxide
330
230
470
520
450
410
400
480
-
Alkalinity
610
630
610
600
640
670
700
660
670
Biological Oxygen Demand
2.0
2.4
3.5
2.5
2.0
2.1
2.0
2.0
2.9
Chemical Oxygen Demand
35
44
40
43
42
43
50
36
43
Iron, Total Recoverable
1.5
6.7
3.8
1.4
2.8
4.4
2
3.9
3.5
Sulfide
0.23
0.78
0.81
0.23
0.23
0.23
0.23
0.81
0.81
Chloride
38
35
39
40
37
37
25
39
34
Nitrate (as N)
0.091
0.077
0.068
0.068
0.077
0.068
0.11
-
0.023
Sulfate
110
96
120
120
120
130
130
130
130
Total Organic Carbon - Duplicates
12
13
11
15
15
14
17
15
15
Acetic Acid
1.5
1.5
1.5
0.58
1.5
1.5
1.5
1.5
0.29
Formic -acid
1.3
1.3
1.3
0.52
1.3
1.3
1.3
1.3
0.26
Lactic acid
1.6
1.6
1.6
0.62
1.6
1.6
1.6
1.6
0.31
n-Butyric Acid
1.3
1.3
1.3
0.52
1.3
1.3
1.3
1.3
0.26
Propionic acid
1.8
1.8
1.8
18
1.8
1.8
1.8
1.8
0.35
Pyruvic Acid
1.9
1.9
1.9
0.74
1.9
1.9
1.9
1.9
0.37
Concentrations in mg/L