MO-7591_36228_CA_MRP_20230119_Monitoring Report

EXCEL CIVIL & ENVIRONMENTAL ASSOCIATES, PLLC 
www.excelengr.com 

Excel Civil & Environmental Associates, PLLC
625 Huntsman Court
Gastonia, North Carolina 28054
NC License No. P-0129
Telephone: [phone]
Facsimile: [phone]
Internet: www.excelengr.com

January 19, 2023

Mr. Ron Taraban
NCDEQ / DWM / UST Section
Mooresville Regional Office
610 East Center Avenue
Mooresville, North Carolina 28115

Re: Monitoring Report
(Former) 321 Mini Mart
2118 North Aspen Street
Lincolnton, North Carolina
Risk Classification: HIGH
Land Use: RESIDENTIAL
MO-7591_36228_CA_20230119_Monitoring Report
EXCEL Project No. 27010

Dear Mr. Taraban:

On behalf of Mr. Satish Desai, Excel Civil & Environmental Associates, PLLC is pleased
to submit a copy of the revised Monitoring Report for your approval.

If you have any comments, please do not hesitate to contact me at 704.853.0800.

Sincerely yours,

EXCEL CIVIL & ENVIRONMENTAL ASSOCIATES, PLLC

Aaron Long, P.E.
Project Engineer

p.c. Mr. Satish Desai, Bucksaver, Parlin, NJ

MONITORING REPORT

(FORMER) 321 MINI MART
2118 NORTH ASPEN STREET
LINCOLNTON, LINCOLN COUNTY, NORTH CAROLINA

NCDEQ INCIDENT NO. 36228
EXCEL PROJECT NO. 27010
MO-7591_36228_CA_20230119_MONITORING REPORT

DATE SUBMITTED:
January 19, 2023

SOURCE OF RELEASE:
Former UST System
Amount Unknown

PREPARED FOR:
Mr. Satish Desai
Responsible Party – Current UST Owner
42 Fela Drive
Parlin, New Jersey 08859

PREPARED BY:
Excel Civil & Environmental Associates, PLLC
625 Huntsman Court
Gastonia, North Carolina 28054
Phone [phone]
NC License No. P-0129

www.excelengr.com

Billy Payne Aaron Long, P.E.
EIT – Engineer in Training Principal Engineer
Monitoring Report January 19, 2023
(Former) 321 Mini Mart Incident No. 36228
Lincolnton, North Carolina Excel No. 27010

EXCEL CIVIL & ENVIRONMENTAL ASSOCIATES, PLLC 
www.excelengr.com
PROJECT SUMMARY

 Groundwater quality samples were collected from three monitoring wells (MW-1R, MW-
2R and VW-1) on December 5, 2022, and laboratory analyzed for volatile organic
compounds (VOCs) by EPA Method 6200B, Ethylene Dibromide (EDB) by EPA Method
504.1, and lead by EPA Method 6010C. During the site visit, MW-3 and MW-6 were
observed to be dry. Additionally, the three monitoring wells were also analyzed for
natural attenuation parameters (alkalinity, free carbon dioxide, nitrate/sulfate, total
organic carbon, iron/manganese, and methane).

 During the sampling event, no free product was observed in any of the sampled monitor
wells. It is Excel’s standard operating procedure not to gauge monitor wells with an oil-
water interface probe prior to sampling if said well has not historically shown free
product. Static water levels were collected with a decontaminated water level indicator.

 The onsite remediation system was put into operation on November 11, 2009. The air
sparging and soil vapor extraction system is comprised of nine injection wells and seven
vapor extraction wells. The system was shut down on August 31, 2015 per DWM
directive.

 The results of the laboratory data for constituents which exceeded the NCAC 2L
Standards are as follows:
 Benzene: MW-1R and VW-1
 Xylenes: MW-1R
 Naphthalene: MW-1R and VW-1
 Lead: MW-1R, MW-2R
 1,2,4-Trimethylbenzene: MW-1R

Copies of the laboratory analytical results are included in Appendix E. Natural
attenuation data is provided in Table 5.

 Results of past receptor surveys completed by Excel during assessment activities
indicate that twenty-nine supply wells were identified within 1,500 feet of the property,
four of which are located within 1,000 feet and confirmed as being utilized for drinking
water purposes. According to the USGS Topographical Map the nearest surface water
body is an unnamed tributary of Walker Branch, located approximately 800 feet
southeast of the source area.

DISCUSSION

 Excel conducted a Mann-Kendall constituent trend analysis which relies on three
statistical metrics, an “S” statistic which indicates whether concentration trend vs. time is
generally decreasing or increasing; a confidence factor (CF) which modifies the S
statistic to indicate the degree of confidence in the trend result; and a coefficient of
variation (COV) to distinguish describe the variability in the data set. The analysis
included an evaluation of both the overall reductions in the areal extent and plume
length for constituents of concern as well as an evaluation of the stability of the plume
Monitoring Report January 19, 2023
(Former) 321 Mini Mart Incident No. 36228
Lincolnton, North Carolina Excel No. 27010

EXCEL CIVIL & ENVIRONMENTAL ASSOCIATES, PLLC 
www.excelengr.com
constituent concentrations for monitor wells in the core and leading edge of the plume.
Mann-Kendall graphs are provided in Appendix C. The graphs depict concentration
trends for monitoring wells MW-1, MW-2 MW-3, MW-6 and VW-1 and indicated the
following:

o Benzene:
 Increasing: MW-1R;
 No Trend: MW-3R, MW-6;
 Decreasing: MW-2R, VW-1
o Toluene:
 No Trend: MW-1R;
 Decreasing: MW-2R, MW-3R
o Ethylbenzene:
 Increasing: MW-1R;
 No Trend: MW-3R;
 Decreasing: MW-2R, MW-6
o Xylenes:
 No Trend: MW-1R;
 Decreasing: MW-2R, MW-3R, MW-6
o MTBE:
 No Trend: MW-1R;
 Decreasing: MW-2R, MW-3R, MW-6, VW-1
o Naphthalene:
 No Trend: MW-1R;
 Increasing: VW-1
 Decreasing: MW-2R, MW-3R, MW-6

In support of natural attenuation monitoring, geochemical parameters indicate subsurface
conditions that are suitable for biodegradation processes to occur. Sufficient levels of
dissolved oxygen in conjunction with relatively high levels of carbon dioxide suggest that
aerobic respiration may be energetically favorable at the site. Additionally, pH and field
measurements suggest that the subsurface environment is suitable for biodegradation
processes. Although conditions appear suitable for biodegradation to occur at the site,
continued monitoring events will be required to determine if natural attenuation is actively
occurring at the site.

RECOMMENDATIONS

Based on the results of the sampling event, Excel recommends continued natural
attenuation monitoring on a semiannual basis. From the previous sampling round
conducted in June 2022, BTEX constituent levels in MW-1 have increased by 8.7%. During
the December 2022 groundwater monitoring round MW-3 and MW-6 were observed to be
dry. Excel recommends continued natural attenuation monitoring at this time. A
groundwater quality sampling event is proposed for June of 2023 as approved by NCDEQ.

Monitoring Report January 19, 2023
(Former) 321 Mini Mart Incident No. 36228
Lincolnton, North Carolina Excel No. 27010

EXCEL CIVIL & ENVIRONMENTAL ASSOCIATES, PLLC 
www.excelengr.com
PROJECT INFORMATION
PRIMARY CONSULTANT: Excel Civil & Environmental Associates, PLLC
PROJECT MANAGER: Aaron Long, PE
SITE CONTACT: Mr. Satish Desai
SITE HISTORY: Excel completed a Phase II ESA at the subject site as
part of a pre-purchase assessment in February-March
2007. The laboratory results from the soil samples
indicated contamination levels exceeding regulatory
action levels. Excel completed a Site Check at the site
in April 2007. At the request of the NCDEQ Excel
completed a Phase II LSA. Groundwater samples
collected as part of the LSA activities revealed
contamination levels which exceeded NCAC 2L
Standards. Additionally, Excel identified twenty-eight
(28) water supply wells within 1,500 feet of the subject
site.
A CSA was completed by Excel in September 2008
defining the horizontal and vertical extent of both soil
and groundwater contamination. In response to a
letter received from NCDEQ, Excel prepared and
submitted a Corrective Action Plan in January 2009.
As per the approved CAP, Excel installed and started
operation of the air sparge and vapor extraction
remediation system in November 2009. The system
was shut down on August 31, 2015.
SURFICIAL AND REGIONAL GEOLOGY:
The subject site is located within the Chauga Belt of
the Inner Piedmont Physiographic Province of North
Carolina. The 1985 USGS Geologic Map of North
Carolina indicates this area as being underlain by
mica schists with other micaceous metamorphic rock
and cherryville granite rock.

During the completion of the monitoring wells at the
property, a brown to orange, silt-clay mixture (CL) was
observed from approximately 1-fbgl to 22-fbgl.
Partially weathered rock (PWR) was encountered from
approximately 22-fbgl to 50-fbgl. The type of soils
observed locations appears consistent with the
surficial sediments common for this area.

SURFICIAL HYDROLOGY:
Groundwater flow across the site appears to be
following with the general topography and flowing to
the south in a direction towards MW-14 and MW-15.
The average hydraulic gradient across the site is
approximately 2.46 feet per day (ft/day). The average
groundwater velocity was calculated to be
approximately 0.08 ft/day (29.2 ft/year). As such, the
lateral migration of dissolved petroleum constituents
appears to be impeded by the local
geological/hydrogeological conditions.

Monitoring Report January 19, 2023
(Former) 321 Mini Mart Incident No. 36228
Lincolnton, North Carolina Excel No. 27010

EXCEL CIVIL & ENVIRONMENTAL ASSOCIATES, PLLC 
www.excelengr.com
REGULATORY INTERACTION
AGENCY: NCDEQ, MRO, DWM, UST Section
AGENCY CONTACT: Ron Taraban
SITE ACTIVITIES: Semiannual Groundwater sampling of select wells
RISK ASSESSMENT
SENSITIVE RECEPTORS: Water supply wells located offsite, any underground
utilities on-site and within R/Ws of Aspen Street.
CLOSEST POTABLE WELL: SW-7, SW-14, SW-21 and SW-22 are located within
1,000-feet of the site and utilized for drinking water
purposes.
MONITORING
LIQUID LEVEL GAUGING FREQUENCY: Semiannual
GROUNDWATER SAMPLING METHOD: Select wells semiannual basis for VOCs by EPA
6200B, EDB by EPA Method 504.1 and Lead by EPA
Method 6010C; and natural attenuation parameters
including alkalinity, free carbon dioxide by EPA
Method 2320, free carbon dioxide by EPA Method
4500, nitrate and sulfate by EPA Method 300, total
organic carbon by EPA Method 9060, iron and
manganese by EPA Method 6010, and methane by
EPA Method RSK175.

EXCEL CIVIL & ENVIRONMENTAL ASSOCIATES, PLLC 
www.excelengr.com 

APPENDICES

APPENDIX A – TABLES

APPENDIX B – FIGURES

APPENDIX C – MANN-KENDALL GRAPHS

APPENDIX D – SUPPLEMENTAL SITE HISTORY TABLES

APPENDIX E – LABORATORY ANALYSES & CHAIN OF CUSTODY FORMS

EXCEL CIVIL & ENVIRONMENTAL ASSOCIATES, PLLC 
www.excelengr.com 

APPENDIX A - TABLES

Table 1 – Summary of Liquid Level Data

Table 2 – Summary of Current and Historical Groundwater Analytical Data

Table 3 – Field Measurements of Groundwater Samples

Table 4 – Potable Wells Information

Table 5 – Natural Attenuation Data

Well ID # Date Installed Total Depth (ft)Screen Interval (ft)Top of Casing (ft)Depth to Poduct (ft)Depth to Water (ft)Product Thickness (ft)Water Table Elevation (ft)MW-1R 5/16/133015 – 30 100.00--23.47--76.53MW-2R 5/16/133015 – 30 100.94--24.03--76.91MW-3R 5/16/133015 – 30 99.38--Dry----MW-6 2/5/082813 – 28 99.30--Dry----VW-1 2/4-5/085045 – 50 99.89--23.34--76.55NOTES:Liquid level data collected on 12/5/2022.ft - feetTable 12118 North Aspen StreetNCDEQ Incident # 36228Excel Project No. 27010Lincolnton, North Carolina(Former) 321 Mini-MartSummary of Liquid Level Data
Well ID Sample
Date
BenzeneTolueneEthylbenzeneXylenesMTBEIPENaphthaleneEDBLeadIsopropylbenzenen-Propylbenzene1,2,4-Trimethylbenzen1,3,5-Trimethylbenzen1 600 600 500 20 70 6 0.02 15 70 70 400 400
6/6/07 18,000 58,000 13,000 71,000 46,000 < 500 NA 51 210 NA NA NA NA
9/1/09
3/10/10 9 67 24 310 190 4.4 680 0.15 < 10 2.5 6.8 150 58
9/2/10 39 250 83 1,070 94 < 2 720 0.54 370 8.5 24 470 120
3/14/11 2 3.2 1.4 10.2 20 0.87 0.94 < 0.5 NA < 0.5 < 0.5 3.7 1.2
9/26/11 300 590 510 2,320 11 65 140 1.9 200 21 49 660 250
3/12-3/13
9/23/13 < 2.5 20 27 590 14 < 2.5 51 0.14 68 3.7 < 2.5 270 110
3/13/14 1.3 J 12 23 380 3.1 0.55 J 33 0.026 40 4.2 14 300 100
9/11/14 < 0.5 < 0.5 0.74 11.9 1.9 < 0.5 1.2 < 0.021 53 1.1 < 0.5 12 5.7
3/26/15 < 0.14 3.6 24 324 7 < 0.26 30 0.042 65 2.1 J 6.2 150 59
9/24/15 < 0.5 1.6 11 169 6 0.73 18 < 0.019 16 2.4 8.3 180 83
3/29/16 5.7 3.3 76 138 4.4 1.9 67 0.26 47 6.8 19 260 60
9/15/16 160 53 83 111 5.2 6.7 72 0.013 J 50 9.0 28 150 84
3/13/17 450 93 24 91 5.6 47 23 < 0.02 210 2.9 7.5 100 6.9
9/29/17 2,700 3,500 260 1,740 < 25 110 < 25 < 0.02 30 < 25 23 J 380 88
3/5/18 1,700 860 160 750 10 76 31 < 0.02 150 9.7 J 24 370 47
9/14/18 3,600 1,500 430 2,400 36 200 89 < 0.0039 76 21 J 48 660 150
7/3/19 3,100 51 410 1,510 24 J 150 50 < 0.004 20 21 J 47 750 170
2/14/20 2,800 280 650 1,820 31 150 87 < 0.004 8.8 J 28.0 77 1,100 250
11/17/20 3,700 1,200 1,300 3,500 58 190 140 < 0.004 11 47.0 100 1,700 460
6/16/21 2,400 3,100 1,100 5,200 55 170 190 < 0.0039 19 37 69 1,300 360
12/28/21 1,900 39 290 490 19 80 29 < 0.0040 140 17 33 490 95
6/27/22 1,700 160 380 970 28 110 60 0.013 JP 17 23 47 750 120
12/5/22 1,700 S 460 310 1,020 15 S 64 67 0.0056 J 230 23 56 650 180
6/11/07 1,300 8,300 1,000 5,900 < 100 370 NA 290 520 NA NA NA NA
9/1/09 2,800 28,000 2,600 22,500 < 50 370 680 570 < 10 83 210 3,200 920
3/10/10 510 3,200 410 4,000 12 77 200 190 20 17 41 870 290
9/2/10 920 6,700 920 7,100 27 < 10 350 82 67 32 70 1,400 410
3/14/11 540 1,900 780 4,600 18 120 210 21 82 35 89 1,200 400
9/26/11 170 210 51 460 57 41 92 0.69 NA 6.8 15 200 81
3/12/12 190 79 360 1,010 6.8 43 130 8.8 61 21 46 450 230
9/12-3/13
9/23/13 < 10 790 530 3,500 < 10 < 10 94 0.90 < 10 60 210 1,300 430
3/13/14 < 0.14 4.7 33 216 < 0.095 < 2.5 6.5 0.081 < 10 6.3 24 150 52
9/11/14 < 0.5 5.4 13 300 < 0.5 < 0.5 2.2 0.150 < 10 0.96 0.59 60 19
3/26/15 1.3 0.66 7 7.32 13 0.82 16 0.130 6.7 J 1 1.6 4.1 1.6
9/24/15
3/29/16 3.7 4.4 29 86 6.5 0.29 J 30 0.85 34 7.3 8.2 23 11
9/16-3/17
9/29/17 < 0.5 < 0.5 < 0.5 < 1 < 0.5 < 0.5 < 0.5 < 0.02 69 < 0.5 < 0.5 < 0.5 < 0.5
3/5/18 < 2.5 15 35 350 < 2.5 < 2.5 < 2.5 0.018 J 11 3 8 81 36
4/8/20 < 0.4 < 0.4 < 0.4 < 0.8 < 0.4 < 0.4 < 0.4 < 0.0039 7.2 J < 0.4 < 0.4 < 0.4 < 0.4
11/16/20 < 0.4 < 0.4 < 0.4 < 0.8 < 0.4 < 0.4 < 0.4 < 0.0039 < 4.7 < 0.4 < 0.4 < 0.4 < 0.4
6/16/21 < 0.4 < 0.4 < 0.4 < 0.8 < 0.4 < 0.4 < 0.4 < 0.0039 < 4.7 < 0.4 < 0.4 0.66 < 0.4
12/28/21 < 0.4 < 0.4 1.3 5.7 < 0.4 < 0.4 < 0.4 < 0.0040 72 < 0.4 0.44 2.6 1
6/27/22 < 0.4 < 0.4 < 0.4 0.54 < 0.4 < 0.4 < 0.4 < 0.0039 < 4.7 < 0.4 < 0.4 < 0.4 < 0.4
12/5/22 < 0.4 3 43 161 < 0.4 < 0.4 0.81 < 0.004 22 4.2 9.5 67 22
Summary of Current and Historical Groundwater Analytical Data

NOT SAMPLED - OBSERVED TO BE DRY
NCDEQ Incident # 36228
NOT SAMPLED - INSUFFICIENT VOLUME
(Former) 321 Mini-Mart
NCAC 2L
NOT SAMPLED – OBSERVED TO BE DRY
2118 North Aspen Street
Excel Project No. 27010
Lincolnton, North Carolina
NOT SAMPLED – OBSERVED TO BE DRY
NOT SAMPLED – OBSERVED TO BE DRY
MW-1
MW-2
MW-1R
MW-2R
Page 1 of 6
Well ID Sample
Date
BenzeneTolueneEthylbenzeneXylenesMTBEIPENaphthaleneEDBLeadIsopropylbenzenen-Propylbenzene1,2,4-Trimethylbenzen1,3,5-Trimethylbenzen1 600 600 500 20 70 6 0.02 15 70 70 400 400
Summary of Current and Historical Groundwater Analytical Data

NCDEQ Incident # 36228
(Former) 321 Mini-Mart
NCAC 2L
2118 North Aspen Street
Excel Project No. 27010
Lincolnton, North Carolina
7/24/07 5,600 14,000 4,700 27,000 2,200 210 680 4.3 18 NA NA NA NA
9/1/09
3/10/10 3,100 4,900 760 10,700 4,700 110 640 1.8 < 10 30 73 2,500 750
9/2/10 260 580 70 3,500 2,300 45 110 3 21 9201,400 460
3/14/11 < 0.5 < 0.5 < 0.5 < 1 24 0.51 < 0.5 < 0.019 14 < 0.5 < 0.5 < 0.5 < 0.5
9/26/11 < 0.5 < 0.5 < 0.5 < 1 3.3 < 0.5 < 0.5 0.11 120 < 0.5 < 0.5 0.56 < 0.5
3/12/12 1.2 5.5 < 0.5 4.9 17 < 0.5 < 0.5 0.34 10 < 0.5 < 0.5 0.97 1
9/12-3/13
9/23/13 19 8.7 49 106 42 < 2.5 27 0.021 15 5.5 19 170 37
3/13/14 1.3 < 0.5 2.6 1.95 3.1 < 0.5 1.5 < 0.02 55 < 0.5 1.5 6.5 1.3
9/11/14 1.7 1.2 3 15.8 2.7 < 0.5 0.65 < 0.021 39 < 0.5 1.3 9.8 2.2
3/25/15 6.2 3.3 14 36 27 1.6 10 < 0.0045 12 1.8 5 22 2.5
9/24/15 2.7 < 0.5 0.8 < 1 9.6 < 0.5 3.1 < 0.019 300 1 2 0.25 J < 0.5
3/29/16 9.1 0.96 14 8.4 13 1.7 19 < 0.019 22 4.4 8 12 < 0.5
9/15/16 11 2.2 17 18.8 14 0.81 12 < 0.0084 58 2.7 6.7 13 3.2
3/13/17 330 13 11 24.9 18 11 13 < 0.02 990 6.3 9.8 5.1 < 2.0
9/29/17 2.7 1.3 1.1 3.19 J < 0.5 < 0.5 < 0.5 < 0.02 8.5 J < 0.5 < 0.5 1.2 < 0.5
3/5/18
7/3/19 410 4.7 12 52 < 2 12 < 2 < 0.004 190 3.3< 219< 2
2/14/20 160 3.4 22 16.5 < 0.4 5.2 4.9 < 0.004 130 2.9 4.6 11 2.3
11/17/20 3.8 1.8 1.6 5 < 0.4 < 0.4 1.3 < 0.004 < 4.7 < 0.4 < 0.4 3.7 1.3
6/16/21 6.8 < 0.4 < 0.4 < 0.8 1.4 6.8 < 0.4 < 0.004 150 0.6 < 0.4 < 0.4 < 0.4
12/28/21 8.3 0.42 J 4.5 2.85 4.5 20 3.6 < 0.0043 700 2.3 8.9 0.83 < 0.4
6/27/22 < 0.4 < 0.4 < 0.4 < 0.8 0.52 1.5 0.64 < 0.0039 94 < 0.4 < 0.4 < 0.4 < 0.4
12/5/22
7/24/07 270 < 1< 1< 136 1.5 NA < 0.021 < 3 NA NA NA NA
9/1/09 31 < 0.5 0.67 1.74 1.3 < 0.5 < 0.5 < 0.019 < 10 2.2 0.75 < 0.5 0.61
3/10/10 310 100 190 1,600 550 20 28 0.063 < 10 16 31 520 350
9/2/10 < 0.5 < 0.5 < 0.5 < 1 5.6 < 0.5 < 0.5 < 0.019 < 10 < 0.5 < 0.5 < 0.5 < 0.5
3/14/11 < 0.5 < 0.5 < 0.5 < 1 7.8 < 0.5 < 0.5 < 0.019 23 < 0.5 < 0.5 < 0.5 < 0.5
9/26/11 < 0.5 < 0.5 < 0.5 < 1 2.1 < 0.5 < 0.5 < 0.02 79 < 0.5 < 0.5 < 0.5 < 0.5
3/12/12 < 0.5 < 0.5 < 0.5 < 1 0.95 < 0.5 < 0.5 < 0.019 < 10 < 0.5 < 0.5 < 0.5 < 0.5
9/24/12
3/19/13 < 0.5 < 0.5 < 0.5 < 1 < 0.5 < 0.5 < 0.5 < 0.02 18 < 0.5 < 0.5 < 0.5 < 0.5
9/23/13 < 0.5 < 0.5 < 0.5 < 1 < 0.5 < 0.5 < 0.5 < 0.02 < 10 < 0.5 < 0.5 < 0.5 < 0.5
3/13/14 < 0.5 < 0.5 < 0.5 < 1 < 0.5 < 0.5 < 0.5 < 0.02 < 10 < 0.5 < 0.5 < 0.5 < 0.5
9/11/14 < 0.5 < 0.5 < 0.5 < 1 < 0.5 < 0.5 < 0.5 < 0.02 < 10 < 0.5 < 0.5 < 0.5 < 0.5
3/25/15 < 0.027 < 0.17 < 0.17 < 0.34 < 0.019 < 0.052 < 0.17 < 0.0045 < 4.7 < 0.029 < 0.024 < 0.17 < 0.17
9/24/15 < 0.5 < 0.5 < 0.5 < 1 < 0.5 < 0.5 < 0.5 < 0.019 8.5 J < 0.5 < 0.5 < 0.5 < 0.5
2/2/08 < 1 0.28 < 1 0.23 < 1 < 1 NA < 0.019 16 NA NA NA NA
9/1/09 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.019 < 10 < 0.5 < 0.5 < 0.5 < 0.5
3/10/10 < 0.5 < 0.5 < 0.5 < 1 < 0.5 < 0.5 < 0.5 < 0.019 < 10 < 0.5 < 0.5 < 0.5 < 0.5
9/2/10 < 0.5 < 0.5 < 0.5 < 1 < 0.5 < 0.5 < 0.5 < 0.02 180 < 0.5 < 0.5 < 0.5 < 0.5
3/14/11 < 0.5 < 0.5 < 0.5 < 1 < 0.5 < 0.5 < 0.5 < 0.02 < 10 < 0.5 < 0.5 < 0.5 < 0.5
9/26/11 < 0.5 < 0.5 < 0.5 < 1 < 0.5 < 0.5 < 0.5 < 0.019 < 10 < 0.5 < 0.5 < 0.5 < 0.5
3/7/12 < 0.5 < 0.5 < 0.5 < 1 < 0.5 < 0.5 < 0.5 < 0.019 < 10 < 0.5 < 0.5 < 0.5 < 0.5
9/24/12 < 0.5 < 0.5 < 0.5 < 1 < 0.5 < 0.5 < 0.5 < 0.02 < 10 < 0.5 < 0.5 < 0.5 < 0.5
NOT SAMPLED - OBSERVED TO BE DRY
NOT SAMPLED – OBSERVED TO BE DRY
NOT SAMPLED – OBSERVED TO BE DRY
MW-3
MW-5
MW-3R
MW-4
NOT SAMPLED - OBSERVED TO BE DRY
NOT SAMPLED – OBSERVED TO BE DRY
Page 2 of 6
Well ID Sample
Date
BenzeneTolueneEthylbenzeneXylenesMTBEIPENaphthaleneEDBLeadIsopropylbenzenen-Propylbenzene1,2,4-Trimethylbenzen1,3,5-Trimethylbenzen1 600 600 500 20 70 6 0.02 15 70 70 400 400
Summary of Current and Historical Groundwater Analytical Data

NCDEQ Incident # 36228
(Former) 321 Mini-Mart
NCAC 2L
2118 North Aspen Street
Excel Project No. 27010
Lincolnton, North Carolina
7/24/07 1,500 3,000 1,000 5,400 1,100 200 NA 2.8 3.4NANANANA
9/1/09
3/10/10 550 1,300 1,100 7,500 290 48 970 2.2 < 10 98 360 3,800 1,000
9/2/10 15 67 79 630 150 7.6 47 0.26 18 6.1 21 240 82
3/14/11 < 0.5 1.8 7.3 42 4.6 < 0.5 1.4 < 0.019 < 10 0.52 1.4 17 7.6
9/26/11 21 190 260 2,170 180 7.1 190 0.13 18 24 64 1,000 380
3/12/12 < 0.5 < 0.5 < 0.5 < 1 5.3 < 0.5 < 0.5 < 0.02 < 10 < 0.5 < 0.5 1.3 < 0.5
9/24/12 < 25 390 970 5,600 < 25 < 25 440 < 0.019 0.028 65 220 2,100 500
3/19/13 7.6 4.2 150 126 11 < 2.5 180 < 0.02 16 30 64 280 53
9/23/13 8.4 2.924319.91.528 < 0.02 < 10 5.4 12 66 < 0.5
3/13/14 17 33 74 94 16 2.2 38 0.026 < 10 6.6 16 58 31
9/11/14 0.77 < 0.5 0.81 1.5 1.9 < 0.5 1.4 < 0.019 17 < 0.5 < 0.5 0.7 1.1
3/25/15 0.97 0.71 5.6 4.8 6.7 < 0.052 5.2 < 0.0046 71 1.6 3.5 2 0.36 J
9/24/15 8.2 26 130 253 18 1.5 60 < 0.019 17 16 48 180 49
3/29/16 19 2.7 24 17.7 9.3 3.7 52 < 0.019 6.8 J 12 20 24 9.9
9/15/16 83 12 47 26 11 1.5 32 < 0.0084 24 8.116113.3
3/13/17 150 7.1 49 111 9 6.3 41 < 0.019 46 8.1199930
9/29/17 340 23 39 57 4.3 10 14 < 0.020 < 10 5.7 13 54 17
3/5/18 310 11 65 136 < 5 8.8 7.6 0.0055 J 14 6.8 15 89 48
9/14/18 210 110 100 33.7 11 11 79 < 0.0039 17 17 36 48 6.7
7/3/19 12 7.7 19 2.64 2.6 1.1 13 < 0.0039 48 3.8 8.9 5 < 0.4
2/14/20 4.3 0.76 4.1 2 0.76 0.75 2.5 < 0.0039 39 0.63 1.4 1.2 < 0.4
11/17/20 43 10 45 36 8.7 6.5 30 < 0.0039 27 5.6 9.6 13 1.8
6/16/21 7.9 2.3177.63.11.26.4 < 0.004 45 2.2 3.8 4.2 < 0.4
12/28/21
6/27/22 3.9 <0.4 12 2.5 2.3 2.3 11 <0.0039 420 4.4 8.3 2.2 0.61
12/5/22
2/2/08 11 0.36 0.18 10 41 4.8 NA 0.11 210 NA NA NA NA
9/1/09 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.019 < 10 < 0.5 < 0.5 < 0.5 < 0.5
3/10/10 1.6 < 0.5 < 0.5 1.7 7.5 1.2 0.55 < 0.019 < 10 < 0.5 < 0.5 0.63 < 0.5
9/2/10
3/14/11 < 0.5 < 0.5 < 0.5 < 1 17 1.4 < 0.5 < 0.019 22 < 0.5 < 0.5 < 0.5 < 0.5
9/26/11 21 190 260 2,240 180 8 170 0.13 79 22 60 1,000 350
3/12/12 < 0.5 < 0.5 < 0.5 < 1 0.88 < 0.5 < 0.5 < 0.019 < 10 < 0.5 < 0.5 < 0.5 < 0.5
9/28/12 < 0.5 < 0.5 < 0.5 < 1 < 0.5 < 0.5 < 0.5 < 0.02 15 < 0.5 < 0.5 < 0.5 < 0.5
3/19/13 < 0.5 < 0.5 < 0.5 < 1 < 0.5 < 0.5 < 0.5 < 0.019 23 < 0.5 < 0.5 < 0.5 < 0.5
9/23/13 < 0.5 < 0.5 < 0.5 < 1 < 0.5 < 0.5 < 0.5 < 0.02 < 10 < 0.5 < 0.5 < 0.5 < 0.5
3/13/14 < 0.5 < 0.5 < 0.5 < 1 < 0.5 < 0.5 < 0.5 < 0.02 23 < 0.5 < 0.5 < 0.5 < 0.5
9/11/14 < 0.5 < 0.5 < 0.5 < 1 0.85 < 0.5 < 0.5 < 0.019 < 10 < 0.5 < 0.5 < 0.5 < 0.5
3/25/15 < 0.027 < 0.17 < 0.17 < 0.34 1.4 < 0.052 < 0.17 < 0.0045 < 4.7 < 0.029 < 0.024 < 0.17 < 0.17
9/24/15 < 0.5 < 0.5 < 0.5 < 1 < 0.5 < 0.5 0.23 J < 0.02 48 < 0.5 < 0.5 < 0.5 < 0.5
2/2/08 < 1 < 1 < 1 < 1 < 1 < 1 NA < 0.02 5.2 NA NA NA NA
9/1/09 < 0.5 < 0.5 < 0.5 < 0.5 1.1 < 0.5 < 0.5 < 0.02 16 < 0.5 < 0.5 < 0.5 < 0.5
3/10/10 < 0.5 < 0.5 < 0.5 < 1 < 0.5 < 0.5 < 0.5 < 0.019 31 < 0.5 < 0.5 < 0.5 < 0.5
9/2/10 < 0.5 < 0.5 < 0.5 < 1 < 0.5 < 0.5 < 0.5 < 0.02 29 < 0.5 < 0.5 < 0.5 < 0.5
3/14/11 < 0.5 < 0.5 < 0.5 < 1 < 0.5 < 0.5 < 0.5 < 0.5 < 10 < 0.5 < 0.5 < 0.5 < 0.5
9/26/11 < 0.5 < 0.5 < 0.5 < 1 0.68 < 0.5 15 < 0.02 < 10 < 0.5 < 0.5 0.5 < 0.5
3/7/12 < 0.5 < 0.5 < 0.5 < 1 < 0.5 < 0.5 < 0.5 < 0.02 < 10 < 0.5 < 0.5 0.5 < 0.5
9/28/12 < 0.5 < 0.5 < 0.5 < 1 < 0.5 < 0.5 < 0.5 < 0.02 55 < 0.5 < 0.5 < 0.5 < 0.5
3/19/13 < 0.5 < 0.5 < 0.5 < 1 < 0.5 < 0.5 < 0.5 < 0.02 < 10 < 0.5 < 0.5 < 0.5 < 0.5
9/24/13 < 0.5 < 0.5 < 0.5 < 1 < 0.5 < 0.5 < 0.5 < 0.019 < 10 < 0.5 < 0.5 < 0.5 < 0.5
3/13/14 < 0.5 < 0.5 < 0.5 < 1 < 0.5 < 0.5 < 0.5 < 0.019 < 10 < 0.5 < 0.5 < 0.5 < 0.5
9/11/14 < 0.5 < 0.5 < 0.5 < 1 < 0.5 < 0.5 < 0.5 < 0.02 < 10 < 0.5 < 0.5 < 0.5 < 0.5
3/26/15 < 0.027 < 0.17 < 0.17 < 0.34 < 0.019 < 0.052 < 0.17 < 0.0045 < 4.7 < 0.029 < 0.024 < 0.17 < 0.17
9/24/15 < 0.5 < 0.5 < 0.5 < 1 < 0.5 < 0.5 < 0.5 < 0.019 13 < 0.5 < 0.5 < 0.5 < 0.5
NOT SAMPLED – NOT LOCATED
NOT SAMPLED – FREE PRODUCT OBSERVED
NOT SAMPLED - OBSERVED TO BE DRY
MW-7
MW-8
MW-6
NOT SAMPLED - OBSERVED TO BE DRY
Page 3 of 6
Well ID Sample
Date
BenzeneTolueneEthylbenzeneXylenesMTBEIPENaphthaleneEDBLeadIsopropylbenzenen-Propylbenzene1,2,4-Trimethylbenzen1,3,5-Trimethylbenzen1 600 600 500 20 70 6 0.02 15 70 70 400 400
Summary of Current and Historical Groundwater Analytical Data

NCDEQ Incident # 36228
(Former) 321 Mini-Mart
NCAC 2L
2118 North Aspen Street
Excel Project No. 27010
Lincolnton, North Carolina
2/2/08 4.7 7.4 3.8 16 2.5 0.61 NA < 0.02 20 NA NA NA NA
9/1/09 < 0.5 < 0.5 < 0.5 < 0.5 1.7 < 0.5 < 0.5 < 0.019 < 10 < 0.5 < 0.5 < 0.5 < 0.5
3/10/10 < 0.5 < 0.5 < 0.5 < 1 1.3 < 0.5 < 0.5 < 0.02 < 10 < 0.5 < 0.5 < 0.5 < 0.5
9/2/10 < 0.5 < 0.5 < 0.5 < 1 < 0.5 < 0.5 < 0.5 < 0.019 18 < 0.5 < 0.5 < 0.5 < 0.5
3/14/11 < 0.5 < 0.5 < 0.5 < 1 < 0.5 < 0.5 < 0.5 < 0.019 13 < 0.5 < 0.5 < 0.5 < 0.5
9/26/11 < 0.5 < 0.5 < 0.5 < 1 0.65 < 0.5 < 0.5 < 0.02 < 10 < 0.5 < 0.5 < 0.5 < 0.5
3/7/12 < 0.5 < 0.5 < 0.5 < 1 0.5 < 0.5 < 0.5 < 0.02 < 10 < 0.5 < 0.5 < 0.5 < 0.5
9/24/12 < 0.5 < 0.5 < 0.5 < 1 0.5 < 0.5 < 0.5 < 0.02 32 < 0.5 < 0.5 < 0.5 < 0.5
3/19/13 < 0.5 < 0.5 < 0.5 < 1 < 0.5 < 0.5 < 0.5 < 0.02 32 < 0.5 < 0.5 < 0.5 < 0.5
9/23/13 < 0.5 < 0.5 < 0.5 < 1 < 0.5 < 0.5 < 0.5 < 0.02 < 10 < 0.5 < 0.5 < 0.5 < 0.5
3/13/14 < 0.5 < 0.5 < 0.5 < 1 < 0.5 < 0.5 < 0.5 < 0.02 < 10 < 0.5 < 0.5 < 0.5 < 0.5
9/11/14 < 0.5 < 0.5 < 0.5 < 1 < 0.5 < 0.5 < 0.5 < 0.02 13 < 0.5 < 0.5 < 0.5 < 0.5
3/25/15 < 0.027 < 0.17 < 0.17 < 0.34 < 0.019 < 0.052 < 0.17 < 0.0044 10 < 0.029 < 0.024 < 0.17 < 0.17
9/24/15 < 0.5 < 0.5 < 0.5 < 0.1 < 0.5 < 0.5 < 0.5 < 0.02 46 < 0.5 < 0.5 < 0.5 < 0.5
5/13/08 < 1 < 1 < 1 < 1 1.4 0.74 NA 0.014 4.9 NA NA NA NA
9/1/09 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.019 < 10 < 0.5 < 0.5 < 0.5 < 0.5
3/10/10 < 0.5 < 0.5 < 0.5 < 1 < 0.5 < 0.5 < 0.5 < 0.02 < 10 < 0.5 < 0.5 < 0.5 < 0.5
9/2/10 < 0.5 < 0.5 < 0.5 < 1 < 0.5 < 0.5 < 0.5 < 0.02 32 < 0.5 < 0.5 < 0.5 < 0.5
3/14/11 < 0.5 < 0.5 < 0.5 < 1 < 0.5 < 0.5 < 0.5 < 0.019 < 10 < 0.5 < 0.5 < 0.5 < 0.5
9/26/11 < 0.5 < 0.5 < 0.5 < 1 < 0.5 < 0.5 < 0.5 < 0.019 < 10 < 0.5 < 0.5 < 0.5 < 0.5
3/7/12 < 0.5 < 0.5 < 0.5 < 1 10 < 0.5 < 0.5 < 0.02 < 10 < 0.5 < 0.5 < 0.5 < 0.5
9/28/12 < 0.5 < 0.5 < 0.5 < 1 < 0.5 < 0.5 < 0.5 < 0.019 < 10 < 0.5 < 0.5 < 0.5 < 0.5
5/13/08 290 150 360 850 140 46 NA 0.16 75 NA NA NA NA
9/1/09 670 690 760 2,510 200 53 430 0.31 < 10 68 200 1,500 330
3/10/10 500 880 1,100 5,200 270 48 690 0.45 < 10 90 260 2,800 640
9/2/10 37 1.2 4.7 16.6 43 7.9 69 0.038 41 7.9 8.7 330 42
3/14/11 3.9 < 0.5 < 0.5 < 1 87 16 1.1 < 0.019 15 0.75 < 0.5 6.7 < 0.5
9/26/11 < 0.5 < 0.5 < 0.5 < 1 5.4 < 0.5 < 0.5 < 0.019 < 10 < 0.5 < 0.5 < 0.5 < 0.5
3/7/12 < 0.5 < 0.5 < 0.5 < 1 9 0.69 < 0.5 < 0.02 < 10 < 0.5 < 0.5 < 0.5 < 0.5
9/24/12 < 0.5 < 0.5 < 0.5 < 1 5.7 < 0.5 < 0.5 < 0.02 25 < 0.5 < 0.5 < 0.5 < 0.5
3/19/13 < 0.5 < 0.5 < 0.5 < 1 5.9 < 0.5 < 0.5 < 0.02 30 < 0.5 < 0.5 < 0.5 < 0.5
9/23/13 < 0.5 < 0.5 < 0.5 < 1 2.2 < 0.5 < 0.5 < 0.02 10 < 0.5 < 0.5 < 0.5 < 0.5
3/13/14 < 0.5 < 0.5 < 0.5 < 1 4.2 0.62 < 0.5 < 0.02 16 < 0.5 < 0.5 < 0.5 < 0.5
9/11/14 < 0.5 < 0.5 < 0.5 < 1 < 0.5 < 0.5 < 0.5 < 0.02 < 10 < 0.5 < 0.5 < 0.5 < 0.5
3/25/15 < 0.027 < 0.17 < 0.17 < 0.34 0.36 J < 0.052 < 0.17 < 0.0045 33 < 0.029 < 0.024 < 0.17 < 0.17
9/24/15 < 0.5 < 0.5 < 0.5 < 1 0.38 J < 0.5 < 0.5 < 0.019 18 < 0.5 < 0.5 < 0.5 < 0.5
5/13/08 < 1 < 1 < 1 < 1 < 1 < 1 NA < 0.02 27 NA NA NA NA
9/1/09 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.019 < 10 < 0.5 < 0.5 < 0.5 < 0.5
3/10/10 < 0.5 < 0.5 < 0.5 < 1 < 0.5 < 0.5 < 0.5 < 0.019 < 10 < 0.5 < 0.5 < 0.5 < 0.5
9/2/10 < 0.5 < 0.5 < 0.5 < 1 1.4 2.2 < 0.5 < 0.019 25 < 0.5 < 0.5 < 0.5 < 0.5
3/14/11 < 0.5 < 0.5 < 0.5 < 1 < 0.5 < 0.5 < 0.5 < 0.019 19 < 0.5 < 0.5 < 0.5 < 0.5
9/26/11 < 0.5 < 0.5 < 0.5 < 1 2.4 2.6 0.9 < 0.02 11 < 0.5 < 0.5 < 0.5 < 0.5
3/7/12
9/28/12 < 0.5 < 0.5 < 0.5 < 1 < 0.5 < 0.5 < 0.5 < 0.02 < 10 < 0.5 < 0.5 < 0.5 < 0.5
MW-13 5/13/08 < 1 < 1 < 1 < 1 < 1 < 1 NA < 0.019 < 0.02 NA NA NA NA
NOT SAMPLED – OBSERVED TO BE DRY
MW-9
MW-10
MW-11
MW-12
Page 4 of 6
Well ID Sample
Date
BenzeneTolueneEthylbenzeneXylenesMTBEIPENaphthaleneEDBLeadIsopropylbenzenen-Propylbenzene1,2,4-Trimethylbenzen1,3,5-Trimethylbenzen1 600 600 500 20 70 6 0.02 15 70 70 400 400
Summary of Current and Historical Groundwater Analytical Data

NCDEQ Incident # 36228
(Former) 321 Mini-Mart
NCAC 2L
2118 North Aspen Street
Excel Project No. 27010
Lincolnton, North Carolina
5/13/08 < 1 < 1 < 1 < 1 0.57 1.6 NA < 0.02 5.2 NA NA NA NA
9/1/09 < 0.5 < 0.5 < 0.5 < 0.5 0.53 0.57 < 0.5 < 0.019 < 10 < 0.5 < 0.5 < 0.5 < 0.5
3/10/10 < 0.5 < 0.5 < 0.5 < 1 1.1 2.8 < 0.5 < 0.019 < 10 < 0.5 < 0.5 < 0.5 < 0.5
9/2/10 < 0.5 < 0.5 < 0.5 < 1 4.5 < 0.5 < 0.5 < 0.02 < 10 < 0.5 < 0.5 < 0.5 < 0.5
3/14/11 < 0.5 < 0.5 < 0.5 < 1 1.6 1.4 < 0.5 < 0.02 < 10 < 0.5 < 0.5 < 0.5 < 0.5
9/26/11 < 0.5 < 0.5 < 0.5 < 1 2.2 2.8 < 0.5 < 0.019 < 10 < 0.5 < 0.5 < 0.5 < 0.5
3/7/12 < 0.5 < 0.5 < 0.5 < 1 1.2 < 0.5 < 0.5 < 0.02 < 10 < 0.5 < 0.5 < 0.5 < 0.5
9/28/12 < 0.5 < 0.5 < 0.5 < 1 1.9 0.73 < 0.5 < 0.02 < 10 < 0.5 < 0.5 < 0.5 < 0.5
MW-15 5/13/08 < 1 < 1 < 1 < 1 4.1 5.6 NA < 0.019 8 NA NA NA NA
2/2/08 910 1,700 450 2,000 400 100 NA 4.7 < 10 NA NA NA NA
9/1/09 1,800 1,900 870 2,290 650 110 340 3.5 < 10 48 120 920 110
3/10/10 910 190 270 354 460 77 280 1.7 < 10 39 56 640 29
9/2/10 71 61 19 61 88 10 24 0.28 24 2.4 2.3 44 < 0.5
3/14/11 < 0.5 < 0.5 < 0.5 < 1 < 0.5 < 0.5 < 0.5 < 0.019 < 10 < 0.5 < 0.5 < 0.5 < 0.5
9/26/11 < 0.5 < 0.5 < 0.5 < 1 < 0.5 < 0.5 < 0.5 < 0.02 13 < 0.5 < 0.5 < 0.5 < 0.5
3/12/12 < 0.5 < 0.5 < 0.5 < 1 1.3 < 0.5 < 0.5 < 0.02 < 10 < 0.5 < 0.5 < 0.5 < 0.5
9/24/12 4.2 < 0.5 5.2 < 1 26 1.4 6 0.034 < 10 < 0.5 1.1 < 0.5 < 0.5
3/19/13 7.2 < 0.5 < 0.5 < 1 39 5.9 80.03< 10 2.1 1.8 1.1 < 0.5
9/23/13 5.9 < 0.5 4.9 < 1 22 4 15 < 0.02 < 10 2.7 1.7 < 0.5 < 0.5
3/13/14 15 3 37 12.7 12 4.1 22 < 0.02 < 10 4.1 6.2 7.6 3
9/11/14 < 0.5 < 0.5 < 0.5 < 1 1.2 < 0.5 < 0.5 < 0.02 < 10 < 0.5 < 0.5 < 0.5 < 0.5
3/26/15 4.4 0.34 J 6.3 0.32 J 9.7 2.5 9.2 < 0.0045 < 4.7 2.8 2.3 < 0.17 < 0.17
9/24/15 38 11 190 38 2.3 J 3.8 68 0.053 < 10 11 26 46 < 2.5
3/29/16 6.2 < 0.5 7 < 1 3.1 1.8 14 < 0.02 < 10 3 2.3 < 0.5 < 0.5
9/15/16 1.2 4.9 4.9 13.7 0.81 < 0.4 1.9 < 0.0082 5.1 J < 0.4 0.6 1 < 0.4
3/13/17 0.87 < 0.4 < 0.4 < 0.8 < 0.4 < 0.4 < 0.4 < 0.02 < 4.7 < 0.4 < 0.4 < 0.4 < 0.4
9/19/17 < 0.5 < 0.5 < 0.5 < 1 < 0.5 < 0.5 < 0.5 < 0.02 < 10 < 0.5 < 0.5 < 0.5 < 0.5
3/5/18 10 2.8 0.41 J 2.5 < 0.5 4.4 < 0.5 < 0.02 23 < 0.5 < 0.5 < 0.5 < 0.5
9/14/18 < 0.4 1.3 < 0.4 < 0.8 < 0.4 < 0.4 < 0.4 < 0.0039 < 4.7 < 0.4 < 0.4 < 0.4 < 0.4
7/3/19 < 0.4 < 0.4 < 0.4 < 0.8 < 0.4 < 0.4 < 0.4 < 0.0038 6.0 J < 0.4 < 0.4 < 0.4 < 0.4
2/14/20 < 0.4 < 0.4 < 0.4 < 0.8 < 0.4 < 0.4 < 0.4 < 0.0039 14 < 0.4 < 0.4 < 0.4 < 0.4
11/17/20 < 0.4 < 0.4 < 0.4 < 0.8 < 0.4 < 0.4 < 0.4 < 0.0038 21 < 0.4 < 0.4 < 0.4 < 0.4
6/17/21 18 13 7.2 18 < 0.4 1 0.66 < 0.004 21 0.44 J 0.79 6.5 1.6
12/28/21 1.1 < 0.4 0.95 1.75 < 0.4 < 0.4 0.44 J < 0.004 150 < 0.40 0.52 5.6 1.3
6/27/22 1.1 <0.4 0.61 3.40 <0.4 <0.4 0.61 <0.0039 4.9 J <0.4 <0.4 3.2 0.85
12/5/22 6.0 < 0.4 13.00 1.60 1.9 3 22 < 0.0039 9 J 9.2 8.4 8.4 < 0.4
VW-2 1/6/09 14 24 7.7 46 7 3.6 NA 0.059 NA NA NA NA NA
3/12/12 < 0.5 < 0.5 < 0.5 < 1 < 0.5 < 0.5 < 0.5 < 0.02 < 10 < 0.5 < 0.5 < 0.5 < 0.5
3/19/13
3/12/12 < 0.5 < 0.5 < 0.5 < 1 < 0.5 < 0.5 < 0.5 < 0.02 < 10 < 0.5 < 0.5 < 0.5 < 0.5
3/19/13
SW-5 3/19/13
9/2/09 < 0.5 < 0.5 < 0.5 < 1 < 0.5 < 0.5 < 0.5 < 0.02 < 10 < 0.5 < 0.5 < 0.5 < 0.5
3/10/10
9/2/10 < 0.5 < 0.5 < 0.5 < 1 < 0.5 < 0.5 < 0.5 < 0.02 29 < 0.5 < 0.5 < 0.5 < 0.5
3/14/11 < 0.5 < 0.5 < 0.5 < 1 < 0.5 < 0.5 < 0.5 < 0.019 < 10 < 0.5 < 0.5 < 0.5 < 0.5
9/24/12 < 0.5 < 0.5 < 0.5 < 1 < 0.5 < 0.5 < 0.5 < 0.02 < 10 < 0.5 < 0.5 < 0.5 < 0.5
3/19/13
NOT SAMPLED – NO ACCESS
NOT SAMPLED – INACTIVE
NOT SAMPLED – INACTIVE
NOT SAMPLED – DOES NOT EXIST
NOT SAMPLED – INACTIVE
VW-1
MW-14
SW-1
SW-4
SW-6
Page 5 of 6
Well ID Sample
Date
BenzeneTolueneEthylbenzeneXylenesMTBEIPENaphthaleneEDBLeadIsopropylbenzenen-Propylbenzene1,2,4-Trimethylbenzen1,3,5-Trimethylbenzen1 600 600 500 20 70 6 0.02 15 70 70 400 400
Summary of Current and Historical Groundwater Analytical Data

NCDEQ Incident # 36228
(Former) 321 Mini-Mart
NCAC 2L
2118 North Aspen Street
Excel Project No. 27010
Lincolnton, North Carolina
9/2/09 < 0.5 < 0.5 < 0.5 < 1 < 0.5 < 0.5 < 0.5 < 0.019 < 10 < 0.5 < 0.5 < 0.5 < 0.5
3/10/10
9/2/10 < 0.5 < 0.5 < 0.5 < 1 < 0.5 < 0.5 < 0.5 < 0.019 < 10 < 0.5 < 0.5 < 0.5 < 0.5
3/14/11 < 0.5 < 0.5 < 0.5 < 1 < 0.5 < 0.5 < 0.5 < 0.02 12 < 0.5 < 0.5 < 0.5 < 0.5
9/26/11 < 0.5 < 0.5 < 0.5 < 1 < 0.5 < 0.5 < 0.5 < 0.5 13 < 0.5 < 0.5 < 0.5 < 0.5
9/24/12 < 0.5 < 0.5 < 0.5 < 1 < 0.5 < 0.5 < 0.5 < 0.5 < 10 < 0.5 < 0.5 < 0.5 < 0.5
3/19/13 < 0.5 < 0.5 < 0.5 < 1 < 0.5 < 0.5 < 0.5 0.019 10 < 0.5 < 0.5 < 0.5 < 0.5
9/23/13 < 0.5 < 0.5 < 0.5 < 1 < 0.5 < 0.5 < 0.5 < 0.019 < 10 < 0.5 < 0.5 < 0.5 < 0.5
3/13/14 < 0.5 < 0.5 < 0.5 < 1 < 0.5 < 0.5 < 0.5 < 0.019 < 10 < 0.5 < 0.5 < 0.5 < 0.5
9/11/14 < 0.5 < 0.5 < 0.5 < 1 < 0.5 < 0.5 < 0.5 < 0.02 22 < 0.5 < 0.5 < 0.5 < 0.5
3/26/15
9/24/15 < 0.5 < 0.5 < 0.5 < 1 < 0.5 < 0.5 < 0.5 < 0.019 < 10 < 0.5 < 0.5 < 0.5 < 0.5
3/29/16 < 0.5 < 0.5 < 0.5 < 1 < 0.5 < 0.5 < 0.5 < 0.02 < 10 < 0.5 < 0.5 < 0.5 < 0.5
SW-8 3/19/13
9/2/09 < 0.5 < 0.5 < 0.5 < 1 < 0.5 < 0.5 < 0.5 < 0.019 < 10 < 0.5 < 0.5 < 0.5 < 0.5
3/10/10 < 0.5 < 0.5 < 0.5 < 1 < 0.5 < 0.5 < 0.5 < 0.019 < 10 < 0.5 < 0.5 < 0.5 < 0.5
3/14/11 < 0.5 < 0.5 < 0.5 < 1 < 0.5 < 0.5 < 0.5 < 0.019 < 10 < 0.5 < 0.5 < 0.5 < 0.5
9/26/11 < 0.5 < 0.5 < 0.5 < 1 < 0.5 < 0.5 < 0.5 < 0.5 13 < 0.5 < 0.5 < 0.5 < 0.5
3/12/12 < 0.5 < 0.5 < 0.5 < 1 < 0.5 < 0.5 < 0.5 < 0.02 < 10 < 0.5 < 0.5 < 0.5 < 0.5
3/19/13
NOTES:
Data provided in ug/L EDB - Ethylene Dibromide
NA - Not Analyzed NCAC - North Carolina Administrative Code
MTBE - Methyl tert-butyl ether Data in BOLD and Highlighted exceeds NCAC 2L Groundwater Standard
IPE - Diispropyl ether J - Estimated result between practical quantitation limit and method detection limit
ND-Not Detectable
Additional Results above NCAC 2L Stds for 3/13/17 Sampling: VW-1: 1-2-Dichloroethane 0.92 ug/L and Vinyl Chloride 12 ug/L
NOT SAMPLED – INACTIVE
NOT SAMPLED – NO ACCESS
NOT SAMPLED – DOES NOT EXIST
NOT SAMPLED – NO ACCESS
SW-9
SW-7
Page 6 of 6
Well ID #pH(SU)DO (ppm)Temperature(°C)SpecificConductivity(µS/cm)ORP(mV)Turbidity (NTU)MW-1R5.41NM15.550.200781000+MW-2R5.42NM17.280.045189689MW-3RMW-6VW-16.049.4117.700.293340NOTES:SU - Standard UnitsS/cm - microSiemens per centimeteroC - degrees CelsiusORP - Oxygen Reduction PotentialNTU - Nephelometric Turbidity UnitsmV - milliVoltsData Collected December 5, 2022NM - Equipment ErrorDryDryTable 3Lincolnton, North CarolinaExcel Project No. 270102118 North Aspen Street(Former) 321 Mini-MartField Measurements of Groundwater SamplesNCDEQ Incident # 36228
WELL ID #OWNER NAME & ADDRESS DISTANCE FROM
SOURCE WELL STATUS
SW-1 Robert Martin / 2124 N. Aspen Street 150’ N Inactive
SW-2 Robert Martin / 2102 & 2106 N. Aspen Street 175’ S Inactive
SW-3 Lincoln Co. Farm Bureau / 2396 N. Aspen Street 230’ S Inactive
SW-4 Marshall Withers / 100 Keever Street 250’ E Inactive
SW-5 Marshall Withers / 100 Keever Street 300’ E Inactive
SW-6 John Avery / 102 Keever Street 350’ E Inactive
SW-7 Jack Bailey / 2144 N. Aspen Street 345’ N Drinking
SW-9 Paul Joseph / 107 Keever Street 345’ N Inactive
SW-10 Edward Lobo / 108 Keever Street 402’ E Inactive
SW-11 Edith Martin / 112 Keever Street 520’ NE Unknown
SW-12 Greg Guggisbey / 205 Elizabeth Avenue 430’ SE Inactive
SW-13 Fred Mullinax / 105 Eastview Drive 540’ S Unknown
SW-14 Evelyn Lail / 111 Carpenter Street 615’ E Drinking
SW-15 Eddie Holly / 2225 N. Aspen Street 600’ N Inactive
SW-16 Michael Keener / 2499 N. Aspen Street 700’ N Unknown
SW-17 Michael Mull / 105 Carpenter Street 660’ E Unknown
SW-18 Michael Mull / 112 Carpenter Street 775’ E Unknown
SW-19 Ute Coffey / 110 Shell Street 990’ E Unknown
SW-20 Daphine Houser / 2350 N. Aspen Street 800’ S Unknown
SW-21 Bob Ramseur / 1907 N. Aspen Street 750’ S Drinking
SW-22 Janet Alvey / 2246 N. Aspen Street 990’ N Drinking
SW-23 E.L. Rudisill, Jr. / 114 Mull Road 1,230’ NE Inactive
SW-24 Larry Hudson / 100 Auton Street 1,275’ E Unknown
SW-25 Clyde Lingerfelt / 108 Auton Street 1,350’ E Unknown
SW-26 Liberty Tabernacle / 161 Shell Street 1,450’ SE Unknown
SW-27 Jeffery Ray Scronce / 162 Shell Street 1,330’ SE Irrigation
SW-28 Mike Scronce / 172 Shell Street 1,330’ SE Drinking
NOTES:
Data obtained from Lincoln County GIS and returned well surveys
Table 4
Excel Project No. 27010
Lincolnton, North Carolina
2118 North Aspen Street
(Former) 321 Mini-Mart
Potable Wells Information
NCDEQ Incident # 36228
TABLE 5
NATURAL ATTENUATION DATA
 (Former) 321 Mini Mart
2118 North Aspen Street
Lincolnton, North Carolina
NCDEQ Incident # 36228
Excel Project No. 27010 Alkalinity (mg/L)Free Carbon Dioxide (mg/L)Sulfate (mg/L)Nitrate (mg/L)Total Organic Carbon (mg/L)Methane (ug/L)Dissolved Iron (mg/L)Dissolved Manganese (mg/L)14-Feb-20 140 280 < 0.2 0.031 15 150 40 39
17-Nov-20 170 250 5.9 < 0.02 24 91 43 69
16-Jun-21 31 290 1.8 0.650 8 5.2 J 16 3.7
28-Dec-21 66 110 1.4 < 0.02 6 150 110 52 S
27-Jun-22 88 H 560 0.94 J 0.013 J 17.6 60 B 33 61
5-Dec-22 90 660 0.32 J 0.170 9.9 16 B 76 59
8-Apr-20 < 20 54 0.53 J 0.19 1.2 4.1 B J 6.7 1.2
16-Nov-20 < 20 32 0.98 B J 1.4 H 0.6 J 2.5 J 4.9 0.39
21-Jun-21 28 100 5.7 0.35 < 0.42 < 2.5 3.8 0.39
28-Dec-21 < 20 33 0.82 J 0.20 1.3 8.6 J 130 3.8
27-Jun-22 < 20 H 88 0.71 J 0.25 < 2.0 21 B 3.8 0.34
5-Dec-22 < 20 250 0.88 J 0.19 2.2 200 B 48 1.2
14-Feb-20 96 170 1.1 0.20 19 1,600 49 3.5
17-Nov-20 < 20 < 27 0.65 J 0.48 0.94 J 2.6 J 0.41 0.031
16-Jun-21 140 270 8.4 0.16 8.2 570 72 7.5
28-Dec-21 93 180 2.5 0.23 12 220 270 35
27-Jun-22 59 H 360 25.0 0.15 < 2.0 55 B 35 39
5-Dec-22
14-Feb-20 43 90 1.7 0.26 3.7 1,600 13 1.2
17-Nov-20 68 170 < 0.25 0.035 5.0 5,000 B 26 7.3
21-Jun-21 45 190 1.7 0.098 6.1 2,600 25 6.2
28-Dec-21
27-Jun-22 29 H 210 13 0.086 < 2.0 130 B 99 27
5-Dec-22
14-Feb-20 < 20 46 < 0.2 0.046 1.1 3.7 J 8.3 0.098
17-Nov-20 < 20 72 0.46 J 3.8 1.3 2.6 J 10 0.38
21-Jun-21 180 880 < 1.3 < 0.025 H 38.0 130 68 48
28-Dec-21 20 57 1.8 0.56 3.3 < 2.5 50 4.8
27-Jun-22 24 H 68 1.4 1.4 < 2.0 < 2.5 2.8 0.16
5-Dec-22 40 280 1.8 0.37 2.4 57 B 15 5.4
Notes:
Data provided in units as shown H- Out of Holding time
J - Estimated value
B - Detected in method blank
ND-Not Detected
VW-1
Well ID Date
Sampled
NATURAL ATTENUATION ANALYTICAL DATA
Not Sampled - Observed to Be Dry
MW-3R
Not Sampled - Observed to Be Dry
MW-6
Not Sampled - Observed to Be Dry
MW-1R
MW-2R

EXCEL CIVIL & ENVIRONMENTAL ASSOCIATES, PLLC 
www.excelengr.com 

APPENDIX B - FIGURES

Figure 1 – Site Vicinity

Figure 2 – Site Plan

Figure 3 – Potable Wells Map

Figure 4 – Water Table Contour Map

Figure 5 – Benzene in Groundwater Map

Figure 6 – MTBE in Groundwater Map

Figure 7 – Naphthalene in Groundwater Map

Figure 8 – EDB in Groundwater Map

Figure 9 – Lead in Groundwater Map

EXCEL CIVIL & ENVIRONMENTAL
ASSOCIATES, PLLC
625 HUNTSMAN COURT
GASTONIA, NC 28054
[phone]
Figure 1 – Topographical Map 
N Source: U.S.G.S. 7.5 Minute Topographic Map
Lincolnton East, Quadrangle, 1993

EXCEL CIVIL & ENVIRONMENTAL
ASSOCIATES, PLLC
625 HUNTSMAN COURT
GASTONIA, NC 28054
[phone]
Figure 3
Potable Wells Map 
N Source: Lincoln County GIS

EXCEL CIVIL & ENVIRONMENTAL ASSOCIATES, PLLC 
www.excelengr.com 

APPENDIX C – MANN-KENDALL GRAPHS

Evaluation Date:Job ID:
Facility Name: Constituent:
Conducted By: Concentration Units:mg/L
Sampling Point ID:MW-1&R MW-2&R MW-3&R MW-6 VW-1
Sampling Sampling
Event Date
1 06/06/07 18.00 1.30 5.60
2 02/02/08 0.910
3 07/24/07 1.50
4 09/01/09 2.80 1.80
5 03/10/10 0.0090 0.5100 3.10 0.550 0.9100
6 09/02/10 0.0390 0.9200 0.2600 0.0150 0.0710
7 03/14/11 0.0020 0.5400 0.0005 0.0005 0.0005
8 09/26/11 0.3000 0.1700 0.0005 0.0210 0.0005
9 03/12/12 0.1900 0.0012 0.0005 0.0005
10 09/24/12 0.0250 0.0042
11 03/19/13 0.0076 0.0072
12 09/23/13 0.0025 0.0100 0.0190 0.0084 0.0059
13 03/13/14 0.0013 0.0001 0.0013 0.0170 0.0150
14 09/11/14 0.0005 0.0005 0.0017 0.0008 0.0005
15 03/26/15 0.0001 0.0013 0.0062 0.0010 0.0044
16 09/24/15 0.0005 0.0027 0.0082 0.0380
17 03/29/16 0.0057 0.0037 0.0091 0.0190 0.0062
18 09/15/16 0.1600 0.0110 0.0830 0.0012
19 03/13/17 0.4500 0.3300 0.1500 0.0009
20 09/29/17 2.70 0.0005 0.0027 0.3400 0.0005
21 03/05/18 1.70 0.0025 0.3100 0.0100
22 09/14/18 3.6000 0.210000 0.000400
23 07/03/19 3.10 0.4100 0.0120 0.0004
24 02/14/20 2.8 0.16 0.0043
25 11/17/20 3.7 0.0038 0.043
26 06/17/21 2.4 0.0004 0.0068 0.0079 0.018
27 12/28/21 1.9 0.0004 0.0083 0.0011
28 06/27/22 1.7 0.0004 0.0004 0.0039 0.0011
29 12/05/22 1.7 0.0004 0.006
30
Coefficient of Variation:1.95 1.99 2.86 2.31 2.78
Mann-Kendall Statistic (S):81 -108 -2 -1 -77
Confidence Factor:98.3% >99.9% 51.2% 50.0% 96.2%
Concentration Trend:Increasing Decreasing No Trend No Trend Decreasing
Notes:
1.At least four independent sampling events per well are required for calculating the trend. Methodology is valid for 4 to 40 samples.
2.Confidence in Trend = Confidence (in percent) that constituent concentration is increasing (S>0) or decreasing (S<0): >95% = Increasing or Decreasing;
≥ 90% = Probably Increasing or Probably Decreasing; < 90% and S>0 = No Trend; < 90%, S≤0, and COV ≥ 1 = No Trend; < 90% and COV < 1 = Stable.
3.Methodology based on "MAROS: A Decision Support System for Optimizing Monitoring Plans", J.J. Aziz, M. Ling, H.S. Rifai, C.J. Newell, and J.R. Gonzales,
Ground Water, 41(3):355-367, 2003.
DISCLAIMER: The GSI Mann-Kendall Toolkit is available "as is". Considerable care has been exercised in preparing this software product; however, no party, including without
limitation GSI Environmental Inc., makes any representation or warranty regarding the accuracy, correctness, or completeness of the information contained herein, and no such
party shall be liable for any direct, indirect, consequential, incidental or other damages resulting from the use of this product or the information contained herein. Information in
this publication is subject to change without notice. GSI Environmental Inc., disclaims any responsibility or obligation to update the information contained herein.
GSI MANN-KENDALL TOOLKIT
for Constituent Trend Analysis
A. Long
27010
GSI Environmental Inc., www.gsi-net.com
BENZENE CONCENTRATION (mg/L)
29-Jan-23
(Former) 321 Mini Mart Benzene
0.0001
0.001
0.01
0.1
1
10
100
01/04 10/06 07/09 04/12 12/14 09/17 06/20 03/23 12/25Concentration (mg/L)Sampling Date
MW-1&R
MW-2&R
MW-3&R
MW-6
VW-1
Evaluation Date:Job ID:
Facility Name: Constituent:
Conducted By: Concentration Units:mg/L
Sampling Point ID:MW-1&R MW-2&R MW-3&R MW-6 VW-1
Sampling Sampling
Event Date
1 06/06/07 46.0 0.100
2 02/02/08 0.40
3 07/24/07 2.2 1.1
4 09/01/09 0.050 0.29 0.65
5 03/10/10 0.1900 0.012 4.7 0.15 0.46
6 09/02/10 0.0940 0.027 2.3 0.0046 0.088
7 03/14/11 0.0200 0.018 0.024 0.18 0.0005
8 09/26/11 0.0110 0.057 0.0033 0.0005
9 03/12/12 0.0068 0.017 0.0053 0.0013
10 09/24/12 0.025 0.026
11 03/19/13 0.011 0.039
12 09/23/13 0.0140 0.0100 0.042 0.0099 0.022
13 03/13/14 0.0031 0.0095 0.0031 0.016 0.012
14 09/11/14 0.0019 0.0005 0.0027 0.0019 0.0012
15 03/26/15 0.0070 0.0130 0.027 0.0067 0.0097
16 09/24/15 0.0060 0.0096 0.018 0.0023
17 03/29/16 0.0044 0.0065 0.013 0.0093 0.0031
18 09/15/16 0.0052 0.014 0.011 0.00081
19 03/13/17 0.0056 0.018 0.009 0.0004
20 09/29/17 0.0250 0.0005 0.0005 0.0043 0.0005
21 03/05/18 0.0100 0.0025 0.005 0.0005
22 09/14/18 0.0360 0.011 0.000400
23 07/03/19 0.024 0.002 0.0026 0.0004
24 02/14/20 0.031 0.00076
25 11/17/20 0.058 0.0087
26 06/17/21 0.055 0.0014 0.0031
27 12/28/21 0.019 0.0004 0.0045 0.0004
28 06/27/22 0.028 0.0004 0.00052 0.0023 0.0004
29 12/05/22 0.015 0.0004 0.0019
30
Coefficient of Variation:4.72 1.45 2.51 2.91 2.40
Mann-Kendall Statistic (S):9 -100 -93 -145 -164
Confidence Factor:58.3% >99.9% 100.0% >99.9% >99.9%
Concentration Trend:No Trend Decreasing Decreasing Decreasing Decreasing
Notes:
1.At least four independent sampling events per well are required for calculating the trend. Methodology is valid for 4 to 40 samples.
2.Confidence in Trend = Confidence (in percent) that constituent concentration is increasing (S>0) or decreasing (S<0): >95% = Increasing or Decreasing;
≥ 90% = Probably Increasing or Probably Decreasing; < 90% and S>0 = No Trend; < 90%, S≤0, and COV ≥ 1 = No Trend; < 90% and COV < 1 = Stable.
3.Methodology based on "MAROS: A Decision Support System for Optimizing Monitoring Plans", J.J. Aziz, M. Ling, H.S. Rifai, C.J. Newell, and J.R. Gonzales,
Ground Water, 41(3):355-367, 2003.
DISCLAIMER: The GSI Mann-Kendall Toolkit is available "as is". Considerable care has been exercised in preparing this software product; however, no party, including without
limitation GSI Environmental Inc., makes any representation or warranty regarding the accuracy, correctness, or completeness of the information contained herein, and no such
party shall be liable for any direct, indirect, consequential, incidental or other damages resulting from the use of this product or the information contained herein. Information in
this publication is subject to change without notice. GSI Environmental Inc., disclaims any responsibility or obligation to update the information contained herein.
MTBE CONCENTRATION (mg/L)
GSI Environmental Inc., www.gsi-net.com
GSI MANN-KENDALL TOOLKIT
for Constituent Trend Analysis
19-Jan-23 27010
(Former) 321 Mini Mart MTBE
A. Long
0.0001
0.001
0.01
0.1
1
10
100
01/04 10/06 07/09 04/12 12/14 09/17 06/20 03/23 12/25Concentration (mg/L)Sampling Date
MW-1&R
MW-2&R
MW-3&R
MW-6
VW-1
Evaluation Date:Job ID:
Facility Name: Constituent:
Conducted By: Concentration Units:mg/L
Sampling Point ID:MW-1&R MW-2&R MW-3&R
Sampling SamplingEvent Date
1 06/06/07 58.00
2 06/11/07 8.30
3 02/02/08
4 07/24/07 14.00
5 09/01/09 28.00
6 03/10/10 0.0670 3.200 4.90
7 09/02/10 0.2500 6.700 0.5800
8 03/14/11 0.0032 1.900 0.0005
9 09/26/11 0.5900 0.210 0.0005
10 03/12/12 0.079 0.0055
11 09/24/12
12 03/19/13
13 09/23/13 0.0200 0.790 0.0087
14 03/13/14 0.0120 0.0047 0.0005
15 09/11/14 0.0005 0.0054 0.0012
16 03/26/15 0.0036 0.0007 0.0033
17 09/24/15 0.0016 0.0005
18 03/29/16 0.0033 0.0044 0.0010
19 09/15/16 0.0530 0.0022
20 03/13/17 0.0930 0.0130
21 09/29/17 3.50 0.0005 0.0013
22 03/05/18 0.860 0.015
23 09/14/18 1.500
24 07/03/19 0.051 0.0047
25 02/14/20 0.28 0.015
26 11/17/20 1.2 0.0004 0.0018
27 06/17/21 3.1 0.0004 0.0004
28 12/28/21 0.039 0.0004 0.00042
29 06/27/22 0.16 0.0004 0.0004
30 12/05/22 0.46 0.003
31
32
33
34
35
Coefficient of Variation:3.93 2.55 3.42Mann-Kendall Statistic (S):47 -131 -67
Confidence Factor:88.6% >99.9% 97.7%
Concentration Trend:No Trend Decreasing Decreasing
Notes:
1.At least four independent sampling events per well are required for calculating the trend. Methodology is valid for 4 to 40 samples.
2.Confidence in Trend = Confidence (in percent) that constituent concentration is increasing (S>0) or decreasing (S<0): >95% = Increasing or Decreasing;
≥ 90% = Probably Increasing or Probably Decreasing; < 90% and S>0 = No Trend; < 90%, S≤0, and COV ≥ 1 = No Trend; < 90% and COV < 1 = Stable.
3.Methodology based on "MAROS: A Decision Support System for Optimizing Monitoring Plans", J.J. Aziz, M. Ling, H.S. Rifai, C.J. Newell, and J.R. Gonzales,
Ground Water, 41(3):355-367, 2003.
DISCLAIMER: The GSI Mann-Kendall Toolkit is available "as is". Considerable care has been exercised in preparing this software product; however, no party, including without
limitation GSI Environmental Inc., makes any representation or warranty regarding the accuracy, correctness, or completeness of the information contained herein, and no such
party shall be liable for any direct, indirect, consequential, incidental or other damages resulting from the use of this product or the information contained herein. Information in
this publication is subject to change without notice. GSI Environmental Inc., disclaims any responsibility or obligation to update the information contained herein.
TOLUENE CONCENTRATION (mg/L)
GSI Environmental Inc., www.gsi-net.com
GSI MANN-KENDALL TOOLKIT
for Constituent Trend Analysis
19-Jan-23 27010
(Former) 321 Mini Mart Toluene
A. Long
0.0001
0.001
0.01
0.1
1
10
100
01/04 10/06 07/09 04/12 12/14 09/17 06/20 03/23 12/25Concentration (mg/L)Sampling Date
MW-1&R
MW-2&R
MW-3&R
Evaluation Date:Job ID:
Facility Name: Constituent:
Conducted By: Concentration Units:mg/L
Sampling Point ID:MW-1&R MW-2&R MW-3&R MW-6
Sampling SamplingEvent Date
1 06/06/07 13.00
2 06/11/07 1.00
3 02/02/08
4 07/24/07 4.70 1.00
5 09/01/09 2.600
6 03/10/10 0.0240 0.410 0.760000 1.1000
7 09/02/10 0.0830 0.920 0.700000 0.0790
8 03/14/11 0.0014 0.780 0.000500 0.0073
9 09/26/11 0.5100 0.051 0.000500 0.2600
10 03/12/12 0.360 0.000500 0.0005
11 09/24/12 0.9700
12 03/19/13 0.1500
13 09/23/13 0.0270 0.530 0.049000 0.0240
14 03/13/14 0.0230 0.033 0.002600 0.0740
15 09/11/14 0.00074 0.013 0.003000 0.00081
16 03/26/15 0.0240 0.007 0.014000 0.0056
17 09/24/15 0.0110 0.000800 0.1300
18 03/29/16 0.0760 0.029 0.014000 0.0240
19 09/15/16 0.0830 0.017000 0.0470
20 03/13/17 0.0240 0.011000 0.0490
21 09/29/17 0.2600 0.0005 0.001100 0.0390
22 03/05/18 0.1600 0.035 0.0650
23 09/14/18 0.4300 0.1000
24 07/03/19 0.41 0.012 0.019
25 02/14/20 0.65 0.022 0.0041
26 11/17/20 1.3 0.0016 0.045
27 06/17/21 1.1 0.017
28 12/18/21 0.29 0.0013 0.0045
29 06/27/22 0.38 0.0004 0.0004 0.012
30 12/05/22 0.31 0.043
31
32
33
34
35
Coefficient of Variation:3.21 1.66 3.34 1.89Mann-Kendall Statistic (S):91 -90 -36 -87
Confidence Factor:99.2% >99.9% 87.0% 98.4%
Concentration Trend:Increasing Decreasing No Trend Decreasing
Notes:
1.At least four independent sampling events per well are required for calculating the trend. Methodology is valid for 4 to 40 samples.
2.Confidence in Trend = Confidence (in percent) that constituent concentration is increasing (S>0) or decreasing (S<0): >95% = Increasing or Decreasing;
≥ 90% = Probably Increasing or Probably Decreasing; < 90% and S>0 = No Trend; < 90%, S≤0, and COV ≥ 1 = No Trend; < 90% and COV < 1 = Stable.
3.Methodology based on "MAROS: A Decision Support System for Optimizing Monitoring Plans", J.J. Aziz, M. Ling, H.S. Rifai, C.J. Newell, and J.R. Gonzales,
Ground Water, 41(3):355-367, 2003.
DISCLAIMER: The GSI Mann-Kendall Toolkit is available "as is". Considerable care has been exercised in preparing this software product; however, no party, including without
limitation GSI Environmental Inc., makes any representation or warranty regarding the accuracy, correctness, or completeness of the information contained herein, and no such
party shall be liable for any direct, indirect, consequential, incidental or other damages resulting from the use of this product or the information contained herein. Information in
this publication is subject to change without notice. GSI Environmental Inc., disclaims any responsibility or obligation to update the information contained herein.
ETHYLBENZENE CONCENTRATION (mg/L)
GSI Environmental Inc., www.gsi-net.com
GSI MANN-KENDALL TOOLKIT
for Constituent Trend Analysis
19-Jan-23 27010
(Former) 321 Mini Mart Ethylbenzene
A. Long
0.0001
0.001
0.01
0.1
1
10
100
01/04 10/06 07/09 04/12 12/14 09/17 06/20 03/23 12/25Concentration (mg/L)Sampling Date
MW-1&R
MW-2&R
MW-3&R
MW-6
Evaluation Date:Job ID:
Facility Name: Constituent:
Conducted By: Concentration Units:mg/L
Sampling Point ID:MW-1&R MW-2&R MW-3&R MW-6
Sampling SamplingEvent Date
1 06/06/07 71.00
2 06/11/07 5.90
3 02/02/08
4 07/24/07 27.00 5.40
5 09/01/09 22.50
6 03/10/10 0.3100 4.000 10.70 7.50
7 09/02/10 1.0700 7.100 3.50 0.6300
8 03/14/11 0.0102 4.600 0.00100 0.0420
9 09/26/11 2.3200 0.460 0.00100 2.1700
10 03/12/12 1.010 0.00490 0.0010
11 09/24/12 5.6000
12 03/19/13 0.1260
13 09/23/13 0.5900 3.500 0.10600 0.0310
14 03/13/14 0.3800 0.216 0.00195 0.0940
15 09/11/14 0.0119 0.300 0.01580 0.0015
16 03/26/15 0.3240 0.00732 0.03600 0.0048
17 09/24/15 0.1690 0.00100 0.2530
18 03/29/16 0.1380 0.086 0.00840 0.0177
19 09/15/16 0.1110 0.01880 0.0260
20 03/13/17 0.0910 0.02490 0.1110
21 09/29/17 1.7400 0.001 0.00319 0.0570
22 03/05/18 0.7500 0.350 0.1360
23 09/14/18 2.4000 0.0337
24 07/03/19 1.51 0.052 0.00264
25 02/14/20 1.82 0.0165 0.002
26 11/17/20 3.5 0.005 0.036
27 6/17/21 5.2 0.0076
28 12/28/21 0.49 0.0057 0.0029
29 6/27/22 0.87 0.00054 0.0008 0.0025
30 1/19/23 1.02 0.161
31
32
33
34
35
Coefficient of Variation:3.51 1.88 3.07 2.26Mann-Kendall Statistic (S):47 -96 -49 -108
Confidence Factor:88.6% >99.9% 94.0% 99.7%
Concentration Trend:No Trend Decreasing Prob. Decreasing Decreasing
Notes:
1.At least four independent sampling events per well are required for calculating the trend. Methodology is valid for 4 to 40 samples.
2.Confidence in Trend = Confidence (in percent) that constituent concentration is increasing (S>0) or decreasing (S<0): >95% = Increasing or Decreasing;
≥ 90% = Probably Increasing or Probably Decreasing; < 90% and S>0 = No Trend; < 90%, S≤0, and COV ≥ 1 = No Trend; < 90% and COV < 1 = Stable.
3.Methodology based on "MAROS: A Decision Support System for Optimizing Monitoring Plans", J.J. Aziz, M. Ling, H.S. Rifai, C.J. Newell, and J.R. Gonzales,
Ground Water, 41(3):355-367, 2003.
DISCLAIMER: The GSI Mann-Kendall Toolkit is available "as is". Considerable care has been exercised in preparing this software product; however, no party, including without
limitation GSI Environmental Inc., makes any representation or warranty regarding the accuracy, correctness, or completeness of the information contained herein, and no such
party shall be liable for any direct, indirect, consequential, incidental or other damages resulting from the use of this product or the information contained herein. Information in
this publication is subject to change without notice. GSI Environmental Inc., disclaims any responsibility or obligation to update the information contained herein.
XYLENES CONCENTRATION (mg/L)
GSI Environmental Inc., www.gsi-net.com
GSI MANN-KENDALL TOOLKIT
for Constituent Trend Analysis
19-Jan-23 27010
(Former) 321 Mini Mart Xylenes
A. Long
0.0001
0.001
0.01
0.1
1
10
100
01/04 10/06 07/09 04/12 12/14 09/17 06/20 03/23 12/25Concentration (mg/L)Sampling Date
MW-1&R
MW-2&R
MW-3&R
MW-6
Evaluation Date:Job ID:
Facility Name: Constituent:
Conducted By: Concentration Units:mg/L
Sampling Point ID:MW-1&R MW-2&R MW-3&R MW-6 VW-1
Sampling SamplingEvent Date
1 06/06/07
2 06/11/07
3 02/02/08
4 07/24/07 0.680
5 09/01/09 0.680
6 03/10/10 0.680 0.200 0.640 0.970
7 09/02/10 0.720 0.350 0.110 0.0470
8 03/14/11 0.00094 0.210 0.0005 0.0014
9 09/26/11 0.140 0.092 0.0005 0.1900
10 03/12/12 0.130 0.0005 0.0005
11 09/24/12 0.4400
12 03/19/13 0.1800
13 09/23/13 0.051 0.094 0.0270 0.0280
14 03/13/14 0.033 0.0065 0.0015 0.0380
15 09/11/14 0.0012 0.0022 0.00065 0.0014
16 03/26/15 0.030 0.016 0.0100 0.0052
17 09/24/15 0.018 0.0031 0.0600
18 03/29/16 0.067 0.030 0.0190 0.0520
19 09/15/16 0.072 0.0120 0.0320
20 03/13/17 0.023 0.0130 0.0410 0.000400
21 09/29/17 0.025 0.0005 0.0005 0.0140 0.000500
22 03/05/18 0.031 0.0025 0.0076 0.000500
23 09/14/18 0.089 0.079 0.0004
24 07/03/19 0.05 0.002 0.013 0.0004
25 02/14/20 0.087 0.0049 0.0025 0.0004
26 11/17/20 0.14 0.0013 0.03 0.0004
27 06/17/21 0.19 0.0004 0.03 0.00066
28 12/28/21 0.029 0.0036 0.0064 0.00041
29 06/27/22 0.06 0.004 0.00064 0.011 0.00061
30 12/05/22 0.067 0.0081 0.022
31
32
33
34
35
Coefficient of Variation:1.64 1.52 2.70 2.20 2.68Mann-Kendall Statistic (S):19 -67 -54 -68 20
Confidence Factor:69.2% >99.9% 94.5% 95.2% 92.9%
Concentration Trend:No Trend Decreasing Prob. Decreasing Decreasing Prob. Increasing
Notes:
1.At least four independent sampling events per well are required for calculating the trend. Methodology is valid for 4 to 40 samples.
2.Confidence in Trend = Confidence (in percent) that constituent concentration is increasing (S>0) or decreasing (S<0): >95% = Increasing or Decreasing;
≥ 90% = Probably Increasing or Probably Decreasing; < 90% and S>0 = No Trend; < 90%, S≤0, and COV ≥ 1 = No Trend; < 90% and COV < 1 = Stable.
3.Methodology based on "MAROS: A Decision Support System for Optimizing Monitoring Plans", J.J. Aziz, M. Ling, H.S. Rifai, C.J. Newell, and J.R. Gonzales,
Ground Water, 41(3):355-367, 2003.
DISCLAIMER: The GSI Mann-Kendall Toolkit is available "as is". Considerable care has been exercised in preparing this software product; however, no party, including without
limitation GSI Environmental Inc., makes any representation or warranty regarding the accuracy, correctness, or completeness of the information contained herein, and no such
party shall be liable for any direct, indirect, consequential, incidental or other damages resulting from the use of this product or the information contained herein. Information in
this publication is subject to change without notice. GSI Environmental Inc., disclaims any responsibility or obligation to update the information contained herein.
NAPHTHALENE CONCENTRATION (mg/L)
GSI Environmental Inc., www.gsi-net.com
GSI MANN-KENDALL TOOLKIT
for Constituent Trend Analysis
19-Jan-23 27010
(Former) 321 Mini Mart Naphthalene
A. Long
0.0001
0.001
0.01
0.1
1
01/04 10/06 07/09 04/12 12/14 09/17 06/20 03/23 12/25Concentration (mg/L)Sampling Date
MW-1&R
MW-2&R
MW-3&R
MW-6
VW-1

EXCEL CIVIL & ENVIRONMENTAL ASSOCIATES, PLLC 
www.excelengr.com 

APPENDIX D – SUPPLEMENTAL SITE HISTORY TABLES

1Table B‐1: SITE HISTORY – UST/AST SYSTEM and OTHER RELEASE INFORMATION (FORMER) 321 MINI MART 2118 NORTH ASPEN STREET, LINCOLNTON, NORTH CAROLINA NCDEQ Incident No. 36228 Excel Project No. 27010  UST ID Number Current / Most‐Recent Contents* Previous Contents* Capacity (in gallons) Construction Details** Tank Dimensions Description of Piping and Pumps Date Tank Installed Status of UST*** Release associated with this UST System? 1 Gasoline  3,000      5/13/88 Current  2 Gasoline  4,000      5/13/88 Current  3 Gasoline  4,000      5/13/88 Current                                                                          Add additional records as necessary AST ID Number Current / Most‐Recent Contents* Previous Contents* Capacity (in gallons) Construction Details** Tank Dimensions Description of Piping and Pumps Date Tank Installed Status of AST*** Release associated with this AST System?                         Add additional records as necessary Incident Number Material Released Date of Release Description of Release 36228   In February 2007, soil samples were collected as part of a property transaction.  The analysis   found soil contamination above agency action levels.  In response to a request made by the NCDEQ, four monitoring wells (MW‐1 – MW‐4) were installed in June and July of 2007. The groundwater samples collected during the assessment activities concluded that dissolved phase contaminants were present at the site above the applicable NC Groundwater Quality Standards (15A NCAC 2L).              Add additional records as necessary *    Gasoline (unleaded or leaded), diesel, used oil, waste oil, aviation fuel, etc., or pesticides, non‐halogenated or halogenated solvents, etc. ** Fiberglass (single‐ or double‐walled), steel (single‐ or double‐walled), steel with FRP (single‐ or double‐walled), steel with liner, other, unknown. *** Currently operational, not in use or temporarily closed (specify date), permanently closed in place (specify date), permanently closed by removal (specify date)
TABLE B‐2: SITE HISTORY ‐ UST/AST OWNER/OPERATOR and OTHER RESPONSIBLE PARTY 
INFORMATION 
(FORMER) 321 MINI MART 
2118 NORTH ASPEN STREET, LINCOLNTON, NORTH CAROLINA 
NCDEQ Incident No. 36228 
Excel Project No. 27010 

UST ID Number MO‐7591 

Facility ID Number 00‐0‐0000029957 

Owner Name (and Contact) Dates of Operation 
(mm/dd/yy to mm/dd/yy) 
Aum Shree Ganeshji, Inc. 2011 to present 
Street Address 
2118 North Aspen Street 
City State Zip Telephone Number 
Lincolnton NC 28092  
Operator Name (and Contact) Dates of Operation 
(mm/dd/yy to mm/dd/yy) 
Aum Shree Ganeshji, Inc. 2011 to present 
Street Address 
2118 North Aspen Street 
City State Zip Telephone Number 
Lincolnton NC 28092  
Other Incidents Onsite or Commingled/In Close Proximity 
Incident Number  Date Incident 
Occurred  
Name of Responsible Party  
for Other Incident  
Date Incident 
Reported  
 Date Incident Closed 
(i/a)  
Street Address 

City State Zip Telephone Number 

TABLE B‐5:  PUBLIC and PRIVATE WATER SUPPLY WELL and OTHER RECEPTOR INFORMATION 
(FORMER) 321 MINI MART 
2118 NORTH ASPEN STREET, LINCOLNTON, NORTH CAROLINA 
NCDEQ Incident No. 36228 
Excel Project No. 27010 

Well ID #  Property Owner Property Address Well Status 
SW-1 Robert Martin 2124 N. Aspen Street Inactive
SW-2 Robert Martin 2102 & 2106 N. Aspen Street Inactive
SW-3 Lincoln Co. Farm Bureau 2396 N. Aspen Street Inactive
SW-4 Marshall Withers 100 Keever Street Inactive
SW-5 Marshall Withers 100 Keever Street Inactive
SW-6 John Avery 102 Keever Street Inactive
SW-7 Jack Bailey 2144 N. Aspen Street Drinking
SW-9 Paul Joseph 107 Keever Street Inactive
SW-10 Edward Lobo 108 Keever Street Inactive
SW-11 Edith Martin 112 Keever Street Unknown
SW-12 Greg Guggisbey 205 Elizabeth Avenue Inactive
SW-13 Fred Mullinax 105 Eastview Drive Unknown
SW-14 Evelyn Lail 111 Carpenter Street Drinking
SW-15 Eddie Holly 2225 N. Aspen Street Inactive
SW-16 Michael Keener 2499 N. Aspen Street Unknown
SW-17 Michael Mull 105 Carpenter Street Unknown
SW-18 Michael Mull 112 Carpenter Street Unknown
SW-19 Ute Coffey 110 Shell Street Unknown
SW-20 Daphine Houser 2350 N. Aspen Street Unknown
SW-21 Bob Ramseur 1907 N. Aspen Street Drinking
SW-22 Janet Alvey 2246 N. Aspen Street Drinking
SW-23 E.L. Rudisill, Jr. 114 Mull Road Inactive
SW-24 Larry Hudson 100 Auton Street Unknown
SW-25 Clyde Lingerfelt 108 Auton Street Unknown
SW-26 Liberty Tabernacle 161 Shell Street Unknown
SW-27 Jeffery Ray Scronce 162 Shell Street Irrigation
SW-28 Mike Scronce 172 Shell Street Drinking
Notes: 
 ‐ Data obtained from Lincoln County GIS and returned well surveys

TABLE B‐7:  MONITORING and REMEDIATION WELL CONSTRUCTION INFORMATION
(FORMER) 321 MINI MART
2118 NORTH ASPEN STREET, LINCOLNTON, NORTH CAROLINA
NCDEQ Incident No. 36228
Excel Project No. 27010
Well ID
Number
MW-1 6/5/2007 22 7 – 22 100.00
MW-1R 5/16/2013 30 15 – 30 100.00
MW-2 6/5/2007 25 10 – 25 100.94
MW-2R 5/16/2013 30 15 – 30 100.94
MW-3 7/23/2007 25 10 – 25 99.38
MW-3R 5/16/2013 30 15 – 30 99.38
MW-4 7/23/2007 25 10 – 25 100.64
MW-5 2/5/2008 28 13 – 28 100.35
MW-6 2/5/2008 28 13 – 28 99.30
MW-7 2/4/2008 28 13 – 28 101.47
MW-8 2/4/2008 28 13 – 28 101.34
MW-9 2/4/2008 28 13 – 28 101.08
MW-10 5/9/2008 28 13 – 28 97.89
MW-11 5/9/2008 28 13 – 28 98.86
MW-12 5/9/2008 28 13 – 28 101.99
MW-13 5/9/2008 30 15 – 30 102.61
MW-14 8/7/2008 31 16 – 31 101.81
MW-15 8/7/2008 28 13 – 28 97.73
VW-1 2/4-5/08 50 45 – 50 --
VW-2 12/22-23/08 65 60 – 65 --
NOTES:
Elevation data based on assumed datum of 100.00’
Data provided in feet unless otherwise noted
Total
Depth
Top of
Casing
Elevation
Screen
Interval
Date
Installed
Interim Reporting Tables Table B-12: Evaluation of Change in Contaminant Mass Revision Date: 1/19/23 Incident Number and Name: (Former) 321 Mini Mart Facility ID#: 00‐0‐0000029957 Initial Mass Estimate / Projected Milestones (from CAP) Initial Baseline Milestones1 End / Closure (Label 1) (Label 2) (Label 3) (Label 4) (Label 5) (Label 6) (Label 7) (Label 8) (Label 9) Projected Mass Reduction (%): 0% Active Y1 Active Y2 Active Y3 Active Y4 Active Y5 MNA MNA MNA MNA Soil Source Zone Mass (Projected): Smear Source Zone Mass (Projected): Groundwater Zone Mass (Projected): Total Mass: Baseline/Milestone (Proj) 199 Measured / Calculated Change in Contaminant Mass (from sampling) Milestone Sampling / Measurement Event Dates1 2007 2009 2010 2011 2013 2014 2015 2016 2017 9/2018 12/2022 Measured Mass2 - Soil Source Zone: Smear Source Zone: Groundwater Zone: 193,079 49,459 23,730 15,000 2,405 38 117 164 1,672 1,748 1,019 199 Removed Mass3 - Excavated from Soil/Smear: Extracted as Vapor/Gas: Extracted as Liquid: Total Mass Removed (est.): Revised Total Mass (est.)4: 193,079 49,459 23,730 15,000 2,405 38 117 164 1,672 1,748 1,019 199 Estimated Reduction Rate5: 74.4% 52% 36.8% 84% 98.4% -208% -40% -91.9% -4.5% 41.7% Reference Milestone (label from above) Reference Milestone (value from above) Reduction Progress vs Milestone6: -969.2 -247.5 -118.2 -74.4 -11.1 0.81 0.41 0.18 -7.4 - 7.8 - 4.1
Interim Reporting Tables 1. Milestones are defined in the CAP. Label column headers with a representative title (‘Active Y1’, ‘MNA Yr 5’ etc.) Add sheets/columns as needed to more effectively track progress. 2. Calculate the measured mass for each unit by multiplying the analytical result by the representative volume (weight, pore space, etc.). (See https://www3.epa.gov/region02/rcra/ra2.pdf) 3. Calculate removed amounts based on excavation screening and/or system effluent monitoring, multiplied by total volume excavated or the system throughput during that period. 4. Where measured from sampling/screening in situ, use the total Measured Mass. Where not screened (or if not representative), use prior Total Mass less current Total Mass Removed. 5. This equals the % reduction from the prior mass (current Total Mass ÷ prior Total Mass). Very large negative values may indicate a new contribution and may require investigation. 6. This equals the current mass reduction % progress (1 - (Revised Total Mass ÷ Applicable Milestone)). Zero or positive values indicate that the associated milestone has been reached

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www.excelengr.com 

APPENDIX E - LABORATORY ANALYSES & CHAIN OF CUSTODY FORM

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.pacelabs.com
Report of Analysis
Excel Civil &Environmental Associates,PLLC
PO Box 6172
Gastonia,NC 28056-6000
Attention:Aaron Long
Project Name:Former 321 Mini Mart
Project Number:27010
Lot Number:XL06011
Date Completed:12/20/2022
12/20/2022 10:04 AM
Approved and released by:
Project Manager II:Edward Barnett
Page 1 of 43
PACE ANALYTICAL SERVICES,LLC
SC DHEC No:32010001 NELAC No:E87653 NC DENR No:329 NC Field Parameters No:5639
Pace Analytical Services,LLC (formerly Shealy Environmetal Services,Inc.)
106 Vantage Point Drive West Columbia,SC 29172 [phone] Fax [phone] www.pacelabs.com
Case NarrativeExcelCivil&Environmental Associates,PLLCLotNumber:XL06011
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.Where
sampling is conducted by the client,results relate to the accuracy of the information provided,and as the
samples are received.
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.
Pace is a TNI accredited laboratory;however,the following analyses are currently not listed on our TNI
scope of accreditation:Drinking Water:VOC (excluding BTEX,MTBE,Naphthalene,&1,2-
dichloroethane)EPA 524.2,E.coli and Total coliforms SM 9223 B-2004,Solid Chemical Material:TOC
Walkley-Black,Biological Tissue:All,Non-Potable Water:SGT-HEM EPA 1664B,Silica EPA 200.7,
Boron,Calcium,Silicon,Strontium EPA 200.8,Bicarbonate,Carbonate,and Hydroxide Alkalinity SM 2320
B-2011,SM 9221 C E-2006 &SM 9222D-2006,Strontium SW-846 6010D,VOC SM 6200 B-2011,Fecal
Coliform Colilert-18.
If you have any questions regarding this report,please contact the Pace Project Manager listed on the
cover page.
VOCs
The surrogate 1,2-dichloroethane-d4 recovered below criteria in the matrix spike (MS)and matrix spike
duplicate (MSD)for batch XQ62472 which may be due to analyst mis-prep.Since opening QC passes
criteria,data has been reported.
EDB &DBCP
Insufficient sample volume was provided to perform matrix spike/matrix spike duplicate (MS/MSD)for
prep batch 63065.
Page 2 of 43
PACE ANALYTICAL SERVICES, LLC
Sample Summary
Excel Civil & Environmental Associates, PLLC
Lot Number: XL06011

Sample Number Sample ID Matrix Date Sampled Date Received
001 12/05/2022 1340MW-1R Aqueous 12/06/2022
002 12/05/2022 1140MW-2R Aqueous 12/06/2022
003 12/05/2022 1420VW-1 Aqueous 12/06/2022
(3 samples)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 3 of 43
PACE ANALYTICAL SERVICES, LLC
Detection Summary
Excel Civil & Environmental Associates, PLLC
Lot Number: XL06011

Sample Sample ID Matrix Parameter Method Result Q Units Page
001 MW-1R Aqueous Alkalinity @ pH 4.5 su SM 2320B-90 mg CaCO3/L 6
001 MW-1R Aqueous CO2 (calculation)SM 4500-CO2 660 mg/L 6
001 MW-1R Aqueous Nitrate - N 300.0 0.17 mg/L 6
001 MW-1R Aqueous Sulfate 300.0 0.32 J mg/L 6
001 MW-1R Aqueous TOC 9060A 9.9 mg/L 6
001 MW-1R Aqueous Benzene SM 6200B-1700 S ug/L 6
001 MW-1R Aqueous n-Butylbenzene SM 6200B-11 ug/L 6
001 MW-1R Aqueous sec-Butylbenzene SM 6200B-5.2 ug/L 6
001 MW-1R Aqueous Chlorobenzene SM 6200B-5.4 ug/L 6
001 MW-1R Aqueous Chloroform SM 6200B-23 S ug/L 6
001 MW-1R Aqueous 2-Chlorotoluene SM 6200B-28 ug/L 6
001 MW-1R Aqueous Diisopropyl ether (IPE) SM 6200B-64 ug/L 7
001 MW-1R Aqueous Ethylbenzene SM 6200B-310 ug/L 7
001 MW-1R Aqueous Isopropylbenzene SM 6200B-23 ug/L 7
001 MW-1R Aqueous p-Isopropyltoluene (p- SM 6200B-4.8 J ug/L 7
001 MW-1R Aqueous Methyl tertiary butyl ether SM 6200B-15 S ug/L 7
001 MW-1R Aqueous Methylene chloride SM 6200B-6.1 S ug/L 7
001 MW-1R Aqueous Naphthalene SM 6200B-67 ug/L 7
001 MW-1R Aqueous n-Propylbenzene SM 6200B-56 ug/L 7
001 MW-1R Aqueous Toluene SM 6200B-460 ug/L 7
001 MW-1R Aqueous 1,3,5-Trimethylbenzene SM 6200B-180 ug/L 7
001 MW-1R Aqueous 1,2,4-Trimethylbenzene SM 6200B-650 ug/L 7
001 MW-1R Aqueous m+p - Xylenes SM 6200B-740 ug/L 7
001 MW-1R Aqueous o - Xylenes SM 6200B-280 ug/L 7
001 MW-1R Aqueous 1,2-Dibromoethane (EDB) 504.1 0.0056 J ug/L 8
001 MW-1R Aqueous Methane RSK - 175 16 B ug/L 8
001 MW-1R Aqueous Iron 6010D 76 mg/L 8
001 MW-1R Aqueous Lead 6010D 0.23 mg/L 8
001 MW-1R Aqueous Manganese 6010D 59 mg/L 8
002 MW-2R Aqueous CO2 (calculation)SM 4500-CO2 250 mg/L 9
002 MW-2R Aqueous Nitrate - N 300.0 0.19 mg/L 9
002 MW-2R Aqueous Sulfate 300.0 0.88 J mg/L 9
002 MW-2R Aqueous TOC 9060A 2.2 mg/L 9
002 MW-2R Aqueous n-Butylbenzene SM 6200B-2.1 ug/L 9
002 MW-2R Aqueous sec-Butylbenzene SM 6200B-1.2 ug/L 9
002 MW-2R Aqueous Ethylbenzene SM 6200B-43 ug/L 10
002 MW-2R Aqueous Isopropylbenzene SM 6200B-4.2 ug/L 10
002 MW-2R Aqueous p-Isopropyltoluene (p- SM 6200B-0.90 ug/L 10
002 MW-2R Aqueous Naphthalene SM 6200B-0.81 ug/L 10
002 MW-2R Aqueous n-Propylbenzene SM 6200B-9.5 ug/L 10
002 MW-2R Aqueous Toluene SM 6200B-3.0 ug/L 10
002 MW-2R Aqueous 1,3,5-Trimethylbenzene SM 6200B-22 ug/L 10
002 MW-2R Aqueous 1,2,4-Trimethylbenzene SM 6200B-67 ug/L 10
002 MW-2R Aqueous m+p - Xylenes SM 6200B-120 ug/L 10
002 MW-2R Aqueous o - Xylenes SM 6200B-41 ug/L 10
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 4 of 43
Detection Summary (Continued)
Lot Number: XL06011
Sample Sample ID Matrix Parameter Method Result Q Units Page
002 MW-2R Aqueous Methane RSK - 175 200 B ug/L 11
002 MW-2R Aqueous Iron 6010D 48 mg/L 11
002 MW-2R Aqueous Lead 6010D 0.022 mg/L 11
002 MW-2R Aqueous Manganese 6010D 1.2 mg/L 11
003 VW-1 Aqueous Alkalinity @ pH 4.5 su SM 2320B-40 mg CaCO3/L 12
003 VW-1 Aqueous CO2 (calculation)SM 4500-CO2 280 mg/L 12
003 VW-1 Aqueous Nitrate - N 300.0 0.37 mg/L 12
003 VW-1 Aqueous Sulfate 300.0 1.8 mg/L 12
003 VW-1 Aqueous TOC 9060A 2.4 mg/L 12
003 VW-1 Aqueous Benzene SM 6200B-6.0 ug/L 12
003 VW-1 Aqueous n-Butylbenzene SM 6200B-2.4 ug/L 12
003 VW-1 Aqueous sec-Butylbenzene SM 6200B-1.9 ug/L 12
003 VW-1 Aqueous Diisopropyl ether (IPE) SM 6200B-3.0 ug/L 13
003 VW-1 Aqueous Ethylbenzene SM 6200B-13 ug/L 13
003 VW-1 Aqueous Isopropylbenzene SM 6200B-9.2 ug/L 13
003 VW-1 Aqueous p-Isopropyltoluene (p- SM 6200B-0.42 J ug/L 13
003 VW-1 Aqueous Methyl tertiary butyl ether SM 6200B-1.9 ug/L 13
003 VW-1 Aqueous Naphthalene SM 6200B-22 ug/L 13
003 VW-1 Aqueous n-Propylbenzene SM 6200B-8.4 ug/L 13
003 VW-1 Aqueous 1,2,4-Trimethylbenzene SM 6200B-8.4 ug/L 13
003 VW-1 Aqueous m+p - Xylenes SM 6200B-1.2 ug/L 13
003 VW-1 Aqueous o - Xylenes SM 6200B-0.40 J ug/L 13
003 VW-1 Aqueous Methane RSK - 175 57 B ug/L 14
003 VW-1 Aqueous Iron 6010D 15 mg/L 14
003 VW-1 Aqueous Lead 6010D 0.0090 J mg/L 14
003 VW-1 Aqueous Manganese 6010D 5.4 mg/L 14
(71 detections)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 5 of 43
Description:Matrix:
Date Received:
Client:Laboratory ID:
Date Sampled:
Excel Civil & Environmental Associates, PLLC
MW-1R
XL06011-001
12/05/2022 1340
12/06/2022
Aqueous
Inorganic non-metals
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 (Alkalinity @) SM 2320B-2011 1 12/07/2022 2042 JJM 62102
1 (CO2 (calcula) SM 4500-CO2 D 1 12/07/2022 2042 N/A
1 (Nitrate - N) 300.0 1 12/06/2022 1522 SJL 61916
1 (Sulfate) 300.0 1 12/06/2022 1522 SJL 61917
1 (TOC) 9060A 1 12/13/2022 1908 CMM 62538
AnalyticalCASParameterNumberMethod Result Q LOQ Units Run DL
Alkalinity @ pH 4.5 su SM 2320B-2011 90 1mg CaCO3/L2020
CO2 (calculation)124-38-9 SM 4500-CO2 D 660 1mg/L2727
Nitrate - N 300.0 0.17 1mg/L0.00500.020
Sulfate 300.0 0.32 J 1mg/L0.251.0
TOC 9060A 9.9 1mg/L0.421.0
Volatile Organic Compounds by GC/MS
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 SM 6200B-SM 6200B-2011 10 12/12/2022 1729 CJJ 62472
AnalyticalCAS
Parameter Number Method Result Q LOQ Units Run DL
Benzene 71-43-2 SM 6200B-2011 1700 S 1ug/L4.05.0
Bromobenzene 108-86-1 SM 6200B-2011 ND 1ug/L4.05.0
Bromochloromethane 74-97-5 SM 6200B-2011 ND S 1ug/L4.05.0
Bromodichloromethane 75-27-4 SM 6200B-2011 ND 1ug/L4.05.0
Bromoform 75-25-2 SM 6200B-2011 ND 1ug/L4.05.0
Bromomethane (Methyl bromide)74-83-9 SM 6200B-2011 ND 1ug/L4.05.0
n-Butylbenzene 104-51-8 SM 6200B-2011 11 1ug/L4.05.0
sec-Butylbenzene 135-98-8 SM 6200B-2011 5.2 1ug/L4.05.0
tert-Butylbenzene 98-06-6 SM 6200B-2011 ND 1ug/L4.05.0
Carbon tetrachloride 56-23-5 SM 6200B-2011 ND 1ug/L4.05.0
Chlorobenzene 108-90-7 SM 6200B-2011 5.4 1ug/L4.05.0
Chloroethane 75-00-3 SM 6200B-2011 ND S 1ug/L4.05.0
Chloroform 67-66-3 SM 6200B-2011 23 S 1ug/L4.05.0
Chloromethane (Methyl chloride)74-87-3 SM 6200B-2011 ND S 1ug/L4.05.0
2-Chlorotoluene 95-49-8 SM 6200B-2011 28 1ug/L4.05.0
4-Chlorotoluene 106-43-4 SM 6200B-2011 ND 1ug/L4.05.0
Dibromochloromethane 124-48-1 SM 6200B-2011 ND 1ug/L4.05.0
1,2-Dibromoethane (EDB)106-93-4 SM 6200B-2011 ND 1ug/L4.05.0
Dibromomethane (Methylene bromide)74-95-3 SM 6200B-2011 ND S 1ug/L4.05.0
1,2-Dichlorobenzene 95-50-1 SM 6200B-2011 ND 1ug/L4.05.0
1,3-Dichlorobenzene 541-73-1 SM 6200B-2011 ND 1ug/L4.05.0
1,4-Dichlorobenzene 106-46-7 SM 6200B-2011 ND 1ug/L4.05.0
Dichlorodifluoromethane 75-71-8 SM 6200B-2011 ND S 1ug/L4.05.0
1,1-Dichloroethane 75-34-3 SM 6200B-2011 ND S 1ug/L4.05.0
TOC Range: 9.76 - 9.996
J = Estimated result < LOQ and > DL_
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range
P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria
H = Out of holding time
Q = Surrogate failure
L = LCS/LCSD failure
S = MS/MSD failure
DL = Detection Limit
W = Reported on wet weight basis
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 6 of 43
Description:Matrix:
Date Received:
Client:Laboratory ID:
Date Sampled:
Excel Civil & Environmental Associates, PLLC
MW-1R
XL06011-001
12/05/2022 1340
12/06/2022
Aqueous
Volatile Organic Compounds by GC/MS
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 SM 6200B-SM 6200B-2011 10 12/12/2022 1729 CJJ 62472
AnalyticalCASParameterNumberMethod Result Q LOQ Units Run DL
1,2-Dichloroethane 107-06-2 SM 6200B-2011 ND S 1ug/L4.05.0
1,1-Dichloroethene 75-35-4 SM 6200B-2011 ND 1ug/L4.05.0
cis-1,2-Dichloroethene 156-59-2 SM 6200B-2011 ND S 1ug/L4.05.0
trans-1,2-Dichloroethene 156-60-5 SM 6200B-2011 ND S 1ug/L4.05.0
1,2-Dichloropropane 78-87-5 SM 6200B-2011 ND 1ug/L4.05.0
1,3-Dichloropropane 142-28-9 SM 6200B-2011 ND 1ug/L4.05.0
2,2-Dichloropropane 594-20-7 SM 6200B-2011 ND 1ug/L4.05.0
1,1-Dichloropropene 563-58-6 SM 6200B-2011 ND S 1ug/L4.05.0
cis-1,3-Dichloropropene 10061-01-5 SM 6200B-2011 ND 1ug/L4.05.0
trans-1,3-Dichloropropene 10061-02-6 SM 6200B-2011 ND 1ug/L4.05.0
Diisopropyl ether (IPE)108-20-3 SM 6200B-2011 64 1ug/L4.05.0
Ethylbenzene 100-41-4 SM 6200B-2011 310 1ug/L4.05.0
Hexachlorobutadiene 87-68-3 SM 6200B-2011 ND 1ug/L4.05.0
Isopropylbenzene (Cumene)98-82-8 SM 6200B-2011 23 1ug/L4.05.0
p-Isopropyltoluene (p-Cymene)99-87-6 SM 6200B-2011 4.8 J 1ug/L4.05.0
Methyl tertiary butyl ether (MTBE)1634-04-4 SM 6200B-2011 15 S 1ug/L4.05.0
Methylene chloride 75-09-2 SM 6200B-2011 6.1 S 1ug/L4.05.0
Naphthalene 91-20-3 SM 6200B-2011 67 1ug/L4.05.0
n-Propylbenzene 103-65-1 SM 6200B-2011 56 1ug/L4.05.0
Styrene 100-42-5 SM 6200B-2011 ND 1ug/L4.05.0
1,1,1,2-Tetrachloroethane 630-20-6 SM 6200B-2011 ND 1ug/L4.05.0
1,1,2,2-Tetrachloroethane 79-34-5 SM 6200B-2011 ND 1ug/L4.05.0
Tetrachloroethene 127-18-4 SM 6200B-2011 ND 1ug/L4.05.0
Toluene 108-88-3 SM 6200B-2011 460 1ug/L4.05.0
1,1,2-Trichloro-1,2,2-Trifluoroethane 76-13-1 SM 6200B-2011 ND 1ug/L4.05.0
1,2,3-Trichlorobenzene 87-61-6 SM 6200B-2011 ND 1ug/L4.05.0
1,2,4-Trichlorobenzene 120-82-1 SM 6200B-2011 ND 1ug/L4.05.0
1,1,1-Trichloroethane 71-55-6 SM 6200B-2011 ND 1ug/L4.05.0
1,1,2-Trichloroethane 79-00-5 SM 6200B-2011 ND 1ug/L4.05.0
Trichloroethene 79-01-6 SM 6200B-2011 ND 1ug/L4.05.0
Trichlorofluoromethane 75-69-4 SM 6200B-2011 ND 1ug/L4.05.0
1,2,3-Trichloropropane 96-18-4 SM 6200B-2011 ND 1ug/L4.05.0
1,3,5-Trimethylbenzene (Mesitylene)108-67-8 SM 6200B-2011 180 1ug/L4.05.0
1,2,4-Trimethylbenzene 95-63-6 SM 6200B-2011 650 1ug/L4.05.0
Vinyl chloride 75-01-4 SM 6200B-2011 ND S 1ug/L4.05.0
m+p - Xylenes 179601-23-1 SM 6200B-2011 740 1ug/L4.05.0
o - Xylenes 95-47-6 SM 6200B-2011 280 1ug/L4.05.0
J = Estimated result < LOQ and > DL_
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range
P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria
H = Out of holding time
Q = Surrogate failure
L = LCS/LCSD failure
S = MS/MSD failure
DL = Detection Limit
W = Reported on wet weight basis
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 7 of 43
Description:Matrix:
Date Received:
Client:Laboratory ID:
Date Sampled:
Excel Civil & Environmental Associates, PLLC
MW-1R
XL06011-001
12/05/2022 1340
12/06/2022
Aqueous
AcceptanceRun 1SurrogateQ % Recovery Limits
1,2-Dichloroethane-d4 93 70-130
Bromofluorobenzene 104 70-130
Toluene-d8 109 70-130
EDB & DBCP by Microextraction
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
2 504.1 504.1 1 12/19/2022 1333 SAF 12/19/2022 1047 63065
AnalyticalCAS
Parameter Number Method Result Q LOQ Units Run DL
1,2-Dibromoethane (EDB)106-93-4 504.1 0.0056 J 2ug/L0.00390.019
AcceptanceRun 2SurrogateQ % Recovery Limits
1,1,1,2-Tetrachloroethane 69 57-137
Methane
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 RSK - 175 1 12/08/2022 1241 JM1 62170
AnalyticalCAS
Parameter Number Method Result Q LOQ Units Run DL
Methane 74-82-8 RSK - 175 16 B 1ug/L2.510
ICP-AES Metals
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
2 3005A 6010D 1 12/13/2022 1115 JMH 12/08/2022 0957 61709
3 3005A 6010D 5 12/13/2022 1119 JMH 12/08/2022 0957 61709
4 3005A 6010D 10 12/14/2022 0613 JMH 12/08/2022 0957 61709
AnalyticalCAS
Parameter Number Method Result Q LOQ Units Run DL
Iron 7439-89-6 6010D 76 2mg/L0.0400.10
Lead 7439-92-1 6010D 0.23 3mg/L0.0240.050
Manganese 7439-96-5 6010D 59 4mg/L0.0190.15
J = Estimated result < LOQ and > DL_
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range
P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria
H = Out of holding time
Q = Surrogate failure
L = LCS/LCSD failure
S = MS/MSD failure
DL = Detection Limit
W = Reported on wet weight basis
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 8 of 43
Description:Matrix:
Date Received:
Client:Laboratory ID:
Date Sampled:
Excel Civil & Environmental Associates, PLLC
MW-2R
XL06011-002
12/05/2022 1140
12/06/2022
Aqueous
Inorganic non-metals
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 (Alkalinity @) SM 2320B-2011 1 12/07/2022 2046 JJM 62102
1 (CO2 (calcula) SM 4500-CO2 D 1 12/07/2022 2046 N/A
1 (Nitrate - N) 300.0 1 12/06/2022 1541 SJL 61916
1 (Sulfate) 300.0 1 12/06/2022 1541 SJL 61917
1 (TOC) 9060A 1 12/13/2022 1931 CMM 62538
AnalyticalCASParameterNumberMethod Result Q LOQ Units Run DL
Alkalinity @ pH 4.5 su SM 2320B-2011 ND 1mg CaCO3/L2020
CO2 (calculation)124-38-9 SM 4500-CO2 D 250 1mg/L2727
Nitrate - N 300.0 0.19 1mg/L0.00500.020
Sulfate 300.0 0.88 J 1mg/L0.251.0
TOC 9060A 2.2 1mg/L0.421.0
Volatile Organic Compounds by GC/MS
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 SM 6200B-SM 6200B-2011 1 12/12/2022 1639 CJJ 62472
AnalyticalCAS
Parameter Number Method Result Q LOQ Units Run DL
Benzene 71-43-2 SM 6200B-2011 ND 1ug/L0.400.50
Bromobenzene 108-86-1 SM 6200B-2011 ND 1ug/L0.400.50
Bromochloromethane 74-97-5 SM 6200B-2011 ND 1ug/L0.400.50
Bromodichloromethane 75-27-4 SM 6200B-2011 ND 1ug/L0.400.50
Bromoform 75-25-2 SM 6200B-2011 ND 1ug/L0.400.50
Bromomethane (Methyl bromide)74-83-9 SM 6200B-2011 ND 1ug/L0.400.50
n-Butylbenzene 104-51-8 SM 6200B-2011 2.1 1ug/L0.400.50
sec-Butylbenzene 135-98-8 SM 6200B-2011 1.2 1ug/L0.400.50
tert-Butylbenzene 98-06-6 SM 6200B-2011 ND 1ug/L0.400.50
Carbon tetrachloride 56-23-5 SM 6200B-2011 ND 1ug/L0.400.50
Chlorobenzene 108-90-7 SM 6200B-2011 ND 1ug/L0.400.50
Chloroethane 75-00-3 SM 6200B-2011 ND 1ug/L0.400.50
Chloroform 67-66-3 SM 6200B-2011 ND 1ug/L0.400.50
Chloromethane (Methyl chloride)74-87-3 SM 6200B-2011 ND 1ug/L0.400.50
2-Chlorotoluene 95-49-8 SM 6200B-2011 ND 1ug/L0.400.50
4-Chlorotoluene 106-43-4 SM 6200B-2011 ND 1ug/L0.400.50
Dibromochloromethane 124-48-1 SM 6200B-2011 ND 1ug/L0.400.50
1,2-Dibromoethane (EDB)106-93-4 SM 6200B-2011 ND 1ug/L0.400.50
Dibromomethane (Methylene bromide)74-95-3 SM 6200B-2011 ND 1ug/L0.400.50
1,2-Dichlorobenzene 95-50-1 SM 6200B-2011 ND 1ug/L0.400.50
1,3-Dichlorobenzene 541-73-1 SM 6200B-2011 ND 1ug/L0.400.50
1,4-Dichlorobenzene 106-46-7 SM 6200B-2011 ND 1ug/L0.400.50
Dichlorodifluoromethane 75-71-8 SM 6200B-2011 ND 1ug/L0.400.50
1,1-Dichloroethane 75-34-3 SM 6200B-2011 ND 1ug/L0.400.50
TOC Range: 2.082 - 2.456
J = Estimated result < LOQ and > DL_
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range
P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria
H = Out of holding time
Q = Surrogate failure
L = LCS/LCSD failure
S = MS/MSD failure
DL = Detection Limit
W = Reported on wet weight basis
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 9 of 43
Description:Matrix:
Date Received:
Client:Laboratory ID:
Date Sampled:
Excel Civil & Environmental Associates, PLLC
MW-2R
XL06011-002
12/05/2022 1140
12/06/2022
Aqueous
Volatile Organic Compounds by GC/MS
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 SM 6200B-SM 6200B-2011 1 12/12/2022 1639 CJJ 62472
AnalyticalCASParameterNumberMethod Result Q LOQ Units Run DL
1,2-Dichloroethane 107-06-2 SM 6200B-2011 ND 1ug/L0.400.50
1,1-Dichloroethene 75-35-4 SM 6200B-2011 ND 1ug/L0.400.50
cis-1,2-Dichloroethene 156-59-2 SM 6200B-2011 ND 1ug/L0.400.50
trans-1,2-Dichloroethene 156-60-5 SM 6200B-2011 ND 1ug/L0.400.50
1,2-Dichloropropane 78-87-5 SM 6200B-2011 ND 1ug/L0.400.50
1,3-Dichloropropane 142-28-9 SM 6200B-2011 ND 1ug/L0.400.50
2,2-Dichloropropane 594-20-7 SM 6200B-2011 ND 1ug/L0.400.50
1,1-Dichloropropene 563-58-6 SM 6200B-2011 ND 1ug/L0.400.50
cis-1,3-Dichloropropene 10061-01-5 SM 6200B-2011 ND 1ug/L0.400.50
trans-1,3-Dichloropropene 10061-02-6 SM 6200B-2011 ND 1ug/L0.400.50
Diisopropyl ether (IPE)108-20-3 SM 6200B-2011 ND 1ug/L0.400.50
Ethylbenzene 100-41-4 SM 6200B-2011 43 1ug/L0.400.50
Hexachlorobutadiene 87-68-3 SM 6200B-2011 ND 1ug/L0.400.50
Isopropylbenzene (Cumene)98-82-8 SM 6200B-2011 4.2 1ug/L0.400.50
p-Isopropyltoluene (p-Cymene)99-87-6 SM 6200B-2011 0.90 1ug/L0.400.50
Methyl tertiary butyl ether (MTBE)1634-04-4 SM 6200B-2011 ND 1ug/L0.400.50
Methylene chloride 75-09-2 SM 6200B-2011 ND 1ug/L0.400.50
Naphthalene 91-20-3 SM 6200B-2011 0.81 1ug/L0.400.50
n-Propylbenzene 103-65-1 SM 6200B-2011 9.5 1ug/L0.400.50
Styrene 100-42-5 SM 6200B-2011 ND 1ug/L0.400.50
1,1,1,2-Tetrachloroethane 630-20-6 SM 6200B-2011 ND 1ug/L0.400.50
1,1,2,2-Tetrachloroethane 79-34-5 SM 6200B-2011 ND 1ug/L0.400.50
Tetrachloroethene 127-18-4 SM 6200B-2011 ND 1ug/L0.400.50
Toluene 108-88-3 SM 6200B-2011 3.0 1ug/L0.400.50
1,1,2-Trichloro-1,2,2-Trifluoroethane 76-13-1 SM 6200B-2011 ND 1ug/L0.400.50
1,2,3-Trichlorobenzene 87-61-6 SM 6200B-2011 ND 1ug/L0.400.50
1,2,4-Trichlorobenzene 120-82-1 SM 6200B-2011 ND 1ug/L0.400.50
1,1,1-Trichloroethane 71-55-6 SM 6200B-2011 ND 1ug/L0.400.50
1,1,2-Trichloroethane 79-00-5 SM 6200B-2011 ND 1ug/L0.400.50
Trichloroethene 79-01-6 SM 6200B-2011 ND 1ug/L0.400.50
Trichlorofluoromethane 75-69-4 SM 6200B-2011 ND 1ug/L0.400.50
1,2,3-Trichloropropane 96-18-4 SM 6200B-2011 ND 1ug/L0.400.50
1,3,5-Trimethylbenzene (Mesitylene)108-67-8 SM 6200B-2011 22 1ug/L0.400.50
1,2,4-Trimethylbenzene 95-63-6 SM 6200B-2011 67 1ug/L0.400.50
Vinyl chloride 75-01-4 SM 6200B-2011 ND 1ug/L0.400.50
m+p - Xylenes 179601-23-1 SM 6200B-2011 120 1ug/L0.400.50
o - Xylenes 95-47-6 SM 6200B-2011 41 1ug/L0.400.50
J = Estimated result < LOQ and > DL_
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range
P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria
H = Out of holding time
Q = Surrogate failure
L = LCS/LCSD failure
S = MS/MSD failure
DL = Detection Limit
W = Reported on wet weight basis
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 10 of 43
Description:Matrix:
Date Received:
Client:Laboratory ID:
Date Sampled:
Excel Civil & Environmental Associates, PLLC
MW-2R
XL06011-002
12/05/2022 1140
12/06/2022
Aqueous
AcceptanceRun 1SurrogateQ % Recovery Limits
1,2-Dichloroethane-d4 97 70-130
Bromofluorobenzene 99 70-130
Toluene-d8 107 70-130
EDB & DBCP by Microextraction
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
2 504.1 504.1 1 12/19/2022 1345 SAF 12/19/2022 1047 63065
AnalyticalCAS
Parameter Number Method Result Q LOQ Units Run DL
1,2-Dibromoethane (EDB)106-93-4 504.1 ND 2ug/L0.00400.020
AcceptanceRun 2SurrogateQ % Recovery Limits
1,1,1,2-Tetrachloroethane 60 57-137
Methane
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 RSK - 175 1 12/08/2022 1257 JM1 62170
AnalyticalCAS
Parameter Number Method Result Q LOQ Units Run DL
Methane 74-82-8 RSK - 175 200 B 1ug/L2.510
ICP-AES Metals
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 3005A 6010D 1 12/09/2022 0505 JMH 12/08/2022 0957 61709
2 3005A 6010D 1 12/13/2022 1111 JMH 12/08/2022 0957 61709
AnalyticalCAS
Parameter Number Method Result Q LOQ Units Run DL
Iron 7439-89-6 6010D 48 2mg/L0.0400.10
Lead 7439-92-1 6010D 0.022 1mg/L0.00470.010
Manganese 7439-96-5 6010D 1.2 1mg/L0.00190.015
J = Estimated result < LOQ and > DL_
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range
P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria
H = Out of holding time
Q = Surrogate failure
L = LCS/LCSD failure
S = MS/MSD failure
DL = Detection Limit
W = Reported on wet weight basis
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 11 of 43
Description:Matrix:
Date Received:
Client:Laboratory ID:
Date Sampled:
Excel Civil & Environmental Associates, PLLC
VW-1
XL06011-003
12/05/2022 1420
12/06/2022
Aqueous
Inorganic non-metals
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 (Alkalinity @) SM 2320B-2011 1 12/07/2022 2057 JJM 62102
1 (CO2 (calcula) SM 4500-CO2 D 1 12/07/2022 2057 N/A
1 (Nitrate - N) 300.0 1 12/06/2022 1600 SJL 61916
1 (Sulfate) 300.0 1 12/06/2022 1600 SJL 61917
1 (TOC) 9060A 1 12/13/2022 1953 CMM 62538
AnalyticalCASParameterNumberMethod Result Q LOQ Units Run DL
Alkalinity @ pH 4.5 su SM 2320B-2011 40 1mg CaCO3/L2020
CO2 (calculation)124-38-9 SM 4500-CO2 D 280 1mg/L2727
Nitrate - N 300.0 0.37 1mg/L0.00500.020
Sulfate 300.0 1.8 1mg/L0.251.0
TOC 9060A 2.4 1mg/L0.421.0
Volatile Organic Compounds by GC/MS
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 SM 6200B-SM 6200B-2011 1 12/12/2022 1704 CJJ 62472
AnalyticalCAS
Parameter Number Method Result Q LOQ Units Run DL
Benzene 71-43-2 SM 6200B-2011 6.0 1ug/L0.400.50
Bromobenzene 108-86-1 SM 6200B-2011 ND 1ug/L0.400.50
Bromochloromethane 74-97-5 SM 6200B-2011 ND 1ug/L0.400.50
Bromodichloromethane 75-27-4 SM 6200B-2011 ND 1ug/L0.400.50
Bromoform 75-25-2 SM 6200B-2011 ND 1ug/L0.400.50
Bromomethane (Methyl bromide)74-83-9 SM 6200B-2011 ND 1ug/L0.400.50
n-Butylbenzene 104-51-8 SM 6200B-2011 2.4 1ug/L0.400.50
sec-Butylbenzene 135-98-8 SM 6200B-2011 1.9 1ug/L0.400.50
tert-Butylbenzene 98-06-6 SM 6200B-2011 ND 1ug/L0.400.50
Carbon tetrachloride 56-23-5 SM 6200B-2011 ND 1ug/L0.400.50
Chlorobenzene 108-90-7 SM 6200B-2011 ND 1ug/L0.400.50
Chloroethane 75-00-3 SM 6200B-2011 ND 1ug/L0.400.50
Chloroform 67-66-3 SM 6200B-2011 ND 1ug/L0.400.50
Chloromethane (Methyl chloride)74-87-3 SM 6200B-2011 ND 1ug/L0.400.50
2-Chlorotoluene 95-49-8 SM 6200B-2011 ND 1ug/L0.400.50
4-Chlorotoluene 106-43-4 SM 6200B-2011 ND 1ug/L0.400.50
Dibromochloromethane 124-48-1 SM 6200B-2011 ND 1ug/L0.400.50
1,2-Dibromoethane (EDB)106-93-4 SM 6200B-2011 ND 1ug/L0.400.50
Dibromomethane (Methylene bromide)74-95-3 SM 6200B-2011 ND 1ug/L0.400.50
1,2-Dichlorobenzene 95-50-1 SM 6200B-2011 ND 1ug/L0.400.50
1,3-Dichlorobenzene 541-73-1 SM 6200B-2011 ND 1ug/L0.400.50
1,4-Dichlorobenzene 106-46-7 SM 6200B-2011 ND 1ug/L0.400.50
Dichlorodifluoromethane 75-71-8 SM 6200B-2011 ND 1ug/L0.400.50
1,1-Dichloroethane 75-34-3 SM 6200B-2011 ND 1ug/L0.400.50
TOC Range: 2.331 - 2.442
J = Estimated result < LOQ and > DL_
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range
P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria
H = Out of holding time
Q = Surrogate failure
L = LCS/LCSD failure
S = MS/MSD failure
DL = Detection Limit
W = Reported on wet weight basis
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 12 of 43
Description:Matrix:
Date Received:
Client:Laboratory ID:
Date Sampled:
Excel Civil & Environmental Associates, PLLC
VW-1
XL06011-003
12/05/2022 1420
12/06/2022
Aqueous
Volatile Organic Compounds by GC/MS
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 SM 6200B-SM 6200B-2011 1 12/12/2022 1704 CJJ 62472
AnalyticalCASParameterNumberMethod Result Q LOQ Units Run DL
1,2-Dichloroethane 107-06-2 SM 6200B-2011 ND 1ug/L0.400.50
1,1-Dichloroethene 75-35-4 SM 6200B-2011 ND 1ug/L0.400.50
cis-1,2-Dichloroethene 156-59-2 SM 6200B-2011 ND 1ug/L0.400.50
trans-1,2-Dichloroethene 156-60-5 SM 6200B-2011 ND 1ug/L0.400.50
1,2-Dichloropropane 78-87-5 SM 6200B-2011 ND 1ug/L0.400.50
1,3-Dichloropropane 142-28-9 SM 6200B-2011 ND 1ug/L0.400.50
2,2-Dichloropropane 594-20-7 SM 6200B-2011 ND 1ug/L0.400.50
1,1-Dichloropropene 563-58-6 SM 6200B-2011 ND 1ug/L0.400.50
cis-1,3-Dichloropropene 10061-01-5 SM 6200B-2011 ND 1ug/L0.400.50
trans-1,3-Dichloropropene 10061-02-6 SM 6200B-2011 ND 1ug/L0.400.50
Diisopropyl ether (IPE)108-20-3 SM 6200B-2011 3.0 1ug/L0.400.50
Ethylbenzene 100-41-4 SM 6200B-2011 13 1ug/L0.400.50
Hexachlorobutadiene 87-68-3 SM 6200B-2011 ND 1ug/L0.400.50
Isopropylbenzene (Cumene)98-82-8 SM 6200B-2011 9.2 1ug/L0.400.50
p-Isopropyltoluene (p-Cymene)99-87-6 SM 6200B-2011 0.42 J 1ug/L0.400.50
Methyl tertiary butyl ether (MTBE)1634-04-4 SM 6200B-2011 1.9 1ug/L0.400.50
Methylene chloride 75-09-2 SM 6200B-2011 ND 1ug/L0.400.50
Naphthalene 91-20-3 SM 6200B-2011 22 1ug/L0.400.50
n-Propylbenzene 103-65-1 SM 6200B-2011 8.4 1ug/L0.400.50
Styrene 100-42-5 SM 6200B-2011 ND 1ug/L0.400.50
1,1,1,2-Tetrachloroethane 630-20-6 SM 6200B-2011 ND 1ug/L0.400.50
1,1,2,2-Tetrachloroethane 79-34-5 SM 6200B-2011 ND 1ug/L0.400.50
Tetrachloroethene 127-18-4 SM 6200B-2011 ND 1ug/L0.400.50
Toluene 108-88-3 SM 6200B-2011 ND 1ug/L0.400.50
1,1,2-Trichloro-1,2,2-Trifluoroethane 76-13-1 SM 6200B-2011 ND 1ug/L0.400.50
1,2,3-Trichlorobenzene 87-61-6 SM 6200B-2011 ND 1ug/L0.400.50
1,2,4-Trichlorobenzene 120-82-1 SM 6200B-2011 ND 1ug/L0.400.50
1,1,1-Trichloroethane 71-55-6 SM 6200B-2011 ND 1ug/L0.400.50
1,1,2-Trichloroethane 79-00-5 SM 6200B-2011 ND 1ug/L0.400.50
Trichloroethene 79-01-6 SM 6200B-2011 ND 1ug/L0.400.50
Trichlorofluoromethane 75-69-4 SM 6200B-2011 ND 1ug/L0.400.50
1,2,3-Trichloropropane 96-18-4 SM 6200B-2011 ND 1ug/L0.400.50
1,3,5-Trimethylbenzene (Mesitylene)108-67-8 SM 6200B-2011 ND 1ug/L0.400.50
1,2,4-Trimethylbenzene 95-63-6 SM 6200B-2011 8.4 1ug/L0.400.50
Vinyl chloride 75-01-4 SM 6200B-2011 ND 1ug/L0.400.50
m+p - Xylenes 179601-23-1 SM 6200B-2011 1.2 1ug/L0.400.50
o - Xylenes 95-47-6 SM 6200B-2011 0.40 J 1ug/L0.400.50
J = Estimated result < LOQ and > DL_
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range
P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria
H = Out of holding time
Q = Surrogate failure
L = LCS/LCSD failure
S = MS/MSD failure
DL = Detection Limit
W = Reported on wet weight basis
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Page 13 of 43
Description:Matrix:
Date Received:
Client:Laboratory ID:
Date Sampled:
Excel Civil & Environmental Associates, PLLC
VW-1
XL06011-003
12/05/2022 1420
12/06/2022
Aqueous
AcceptanceRun 1SurrogateQ % Recovery Limits
1,2-Dichloroethane-d4 104 70-130
Bromofluorobenzene 101 70-130
Toluene-d8 107 70-130
EDB & DBCP by Microextraction
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
2 504.1 504.1 1 12/19/2022 1357 SAF 12/19/2022 1047 63065
AnalyticalCAS
Parameter Number Method Result Q LOQ Units Run DL
1,2-Dibromoethane (EDB)106-93-4 504.1 ND 2ug/L0.00390.019
AcceptanceRun 2SurrogateQ % Recovery Limits
1,1,1,2-Tetrachloroethane 83 57-137
Methane
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 RSK - 175 1 12/08/2022 1313 JM1 62170
AnalyticalCAS
Parameter Number Method Result Q LOQ Units Run DL
Methane 74-82-8 RSK - 175 57 B 1ug/L2.510
ICP-AES Metals
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 3005A 6010D 1 12/09/2022 0500 JMH 12/08/2022 0957 61709
2 3005A 6010D 1 12/13/2022 1107 JMH 12/08/2022 0957 61709
AnalyticalCAS
Parameter Number Method Result Q LOQ Units Run DL
Iron 7439-89-6 6010D 15 2mg/L0.0400.10
Lead 7439-92-1 6010D 0.0090 J 1mg/L0.00470.010
Manganese 7439-96-5 6010D 5.4 1mg/L0.00190.015
J = Estimated result < LOQ and > DL_
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range
P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria
H = Out of holding time
Q = Surrogate failure
L = LCS/LCSD failure
S = MS/MSD failure
DL = Detection Limit
W = Reported on wet weight basis
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Page 14 of 43
QC Summary
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Page 15 of 43
Inorganic non-metals - MB
Batch:
Sample ID:XQ61916-001
61916
Analytical Method:300.0
Matrix:Aqueous
Parameter Result Q LOQ DL Units Analysis DateDil
Nitrate - N ND 12/06/2022 14070.020 0.0050 mg/L1
Note: Calculations are performed before rounding to avoid round-off errors in calculated results
LOQ = Limit of Quantitation ND = Not detected at or above the DL
J = Estimated result < LOQ and > DL
N = Recovery is out of criteria
P = The RPD between two GC columns exceeds 40%
+ = RPD is out of criteria
_DL = Detection Limit
* = RSD is out of criteria
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Page 16 of 43
Inorganic non-metals - LCS
Batch:
Sample ID:XQ61916-002
61916
Analytical Method:300.0
Matrix:Aqueous
Parameter Result Q % Rec
Spike
Amount Analysis Date
%Rec
LimitDil(mg/L)(mg/L)
Nitrate - N 0.84 12/06/2022 14441050.80 90-1101
Note: Calculations are performed before rounding to avoid round-off errors in calculated results
LOQ = Limit of Quantitation ND = Not detected at or above the DL
J = Estimated result < LOQ and > DL
N = Recovery is out of criteria
P = The RPD between two GC columns exceeds 40%
+ = RPD is out of criteria
_DL = Detection Limit
* = RSD is out of criteria
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Page 17 of 43
Inorganic non-metals - MB
Batch:
Sample ID:XQ61917-001
61917
Analytical Method:300.0
Matrix:Aqueous
Parameter Result Q LOQ DL Units Analysis DateDil
Sulfate ND 12/06/2022 14071.0 0.25 mg/L1
Note: Calculations are performed before rounding to avoid round-off errors in calculated results
LOQ = Limit of Quantitation ND = Not detected at or above the DL
J = Estimated result < LOQ and > DL
N = Recovery is out of criteria
P = The RPD between two GC columns exceeds 40%
+ = RPD is out of criteria
_DL = Detection Limit
* = RSD is out of criteria
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Page 18 of 43
Inorganic non-metals - LCS
Batch:
Sample ID:XQ61917-002
61917
Analytical Method:300.0
Matrix:Aqueous
Parameter Result Q % Rec
Spike
Amount Analysis Date
%Rec
LimitDil(mg/L)(mg/L)
Sulfate 21 12/06/2022 14441032090-1101
Note: Calculations are performed before rounding to avoid round-off errors in calculated results
LOQ = Limit of Quantitation ND = Not detected at or above the DL
J = Estimated result < LOQ and > DL
N = Recovery is out of criteria
P = The RPD between two GC columns exceeds 40%
+ = RPD is out of criteria
_DL = Detection Limit
* = RSD is out of criteria
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Page 19 of 43
Inorganic non-metals - LCS
Batch:
Sample ID:XQ62102-002
62102
Analytical Method:SM 2320B-2011
Matrix:Aqueous
Parameter Result Q % Rec
Spike
Amount Analysis Date
%Rec
LimitDil(mg CaCO3/L) (mg CaCO3/L)
Alkalinity @ pH 4.5 su 99 12/07/2022 20359910090-1101
Note: Calculations are performed before rounding to avoid round-off errors in calculated results
LOQ = Limit of Quantitation ND = Not detected at or above the DL
J = Estimated result < LOQ and > DL
N = Recovery is out of criteria
P = The RPD between two GC columns exceeds 40%
+ = RPD is out of criteria
_DL = Detection Limit
* = RSD is out of criteria
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Page 20 of 43
Inorganic non-metals - Duplicate
Batch:
Sample ID:XL06011-002DU
62102
Analytical Method:SM 2320B-2011
Matrix:Aqueous
Parameter Result Q Analysis Date% RPD %RPD
Limit
Sample
Amount Dil(mg CaCO3/L) (mg CaCO3/L)
Alkalinity @ pH 4.5 su ND 12/07/2022 20520.00 20ND1
Note: Calculations are performed before rounding to avoid round-off errors in calculated results
LOQ = Limit of Quantitation ND = Not detected at or above the DL
J = Estimated result < LOQ and > DL
N = Recovery is out of criteria
P = The RPD between two GC columns exceeds 40%
+ = RPD is out of criteria
_DL = Detection Limit
* = RSD is out of criteria
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Page 21 of 43
Inorganic non-metals - MB
Batch:
Sample ID:XQ62538-001
62538
Analytical Method:9060A
Matrix:Aqueous
Parameter Result Q LOQ DL Units Analysis DateDil
TOC ND 12/13/2022 17381.0 0.42 mg/L1
Note: Calculations are performed before rounding to avoid round-off errors in calculated results
LOQ = Limit of Quantitation ND = Not detected at or above the DL
J = Estimated result < LOQ and > DL
N = Recovery is out of criteria
P = The RPD between two GC columns exceeds 40%
+ = RPD is out of criteria
_DL = Detection Limit
* = RSD is out of criteria
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Page 22 of 43
Inorganic non-metals - LCS
Batch:
Sample ID:XQ62538-002
62538
Analytical Method:9060A
Matrix:Aqueous
Parameter Result Q % Rec
Spike
Amount Analysis Date
%Rec
LimitDil(mg/L)(mg/L)
TOC 20 12/13/2022 1800992090-1101
Note: Calculations are performed before rounding to avoid round-off errors in calculated results
LOQ = Limit of Quantitation ND = Not detected at or above the DL
J = Estimated result < LOQ and > DL
N = Recovery is out of criteria
P = The RPD between two GC columns exceeds 40%
+ = RPD is out of criteria
_DL = Detection Limit
* = RSD is out of criteria
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Page 23 of 43
Inorganic non-metals - MS
Batch:
Sample ID:XL06011-003MS
62538
Analytical Method:9060A
Matrix:Aqueous
Parameter Result Q % Rec
Spike
Amount Analysis Date
%Rec
Limit
Sample
Amount Dil(mg/L) (mg/L) (mg/L)
TOC 49 12/13/2022 2015945070-1302.4 1
Note: Calculations are performed before rounding to avoid round-off errors in calculated results
LOQ = Limit of Quantitation ND = Not detected at or above the DL
J = Estimated result < LOQ and > DL
N = Recovery is out of criteria
P = The RPD between two GC columns exceeds 40%
+ = RPD is out of criteria
_DL = Detection Limit
* = RSD is out of criteria
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Page 24 of 43
Inorganic non-metals - MSD
Batch:
Sample ID:XL06011-003MD
62538
Analytical Method:9060A
Matrix:Aqueous
Parameter Result Q % Rec
Spike
Amount Analysis Date% RPD
%Rec
Limit % RPD
Limit
Sample
Amount Dil(mg/L) (mg/L) (mg/L)
TOC 48 12/13/2022 2037915070-1303.1 202.4 1
Note: Calculations are performed before rounding to avoid round-off errors in calculated results
LOQ = Limit of Quantitation ND = Not detected at or above the DL
J = Estimated result < LOQ and > DL
N = Recovery is out of criteria
P = The RPD between two GC columns exceeds 40%
+ = RPD is out of criteria
_DL = Detection Limit
* = RSD is out of criteria
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Page 25 of 43
Volatile Organic Compounds by GC/MS - MB
Batch:Prep Method:
Sample ID:XQ62472-001
62472 SM 6200B-2011
Analytical Method:SM 6200B-2011
Matrix:Aqueous
Parameter Result Q LOQ DL Units Analysis DateDil
Benzene ND 12/12/2022 14200.50 0.40 ug/L1
Bromobenzene ND 12/12/2022 14200.50 0.40 ug/L1
Bromochloromethane ND 12/12/2022 14200.50 0.40 ug/L1
Bromodichloromethane ND 12/12/2022 14200.50 0.40 ug/L1
Bromoform ND 12/12/2022 14200.50 0.40 ug/L1
Bromomethane (Methyl bromide) ND 12/12/2022 14200.50 0.40 ug/L1
n-Butylbenzene ND 12/12/2022 14200.50 0.40 ug/L1
sec-Butylbenzene ND 12/12/2022 14200.50 0.40 ug/L1
tert-Butylbenzene ND 12/12/2022 14200.50 0.40 ug/L1
Carbon tetrachloride ND 12/12/2022 14200.50 0.40 ug/L1
Chlorobenzene ND 12/12/2022 14200.50 0.40 ug/L1
Chloroethane ND 12/12/2022 14200.50 0.40 ug/L1
Chloroform ND 12/12/2022 14200.50 0.40 ug/L1
Chloromethane (Methyl chloride) ND 12/12/2022 14200.50 0.40 ug/L1
2-Chlorotoluene ND 12/12/2022 14200.50 0.40 ug/L1
4-Chlorotoluene ND 12/12/2022 14200.50 0.40 ug/L1
Dibromochloromethane ND 12/12/2022 14200.50 0.40 ug/L1
1,2-Dibromoethane (EDB)ND 12/12/2022 14200.50 0.40 ug/L1
Dibromomethane (Methylene bromide) ND 12/12/2022 14200.50 0.40 ug/L1
1,2-Dichlorobenzene ND 12/12/2022 14200.50 0.40 ug/L1
1,3-Dichlorobenzene ND 12/12/2022 14200.50 0.40 ug/L1
1,4-Dichlorobenzene ND 12/12/2022 14200.50 0.40 ug/L1
Dichlorodifluoromethane ND 12/12/2022 14200.50 0.40 ug/L1
1,1-Dichloroethane ND 12/12/2022 14200.50 0.40 ug/L1
1,2-Dichloroethane ND 12/12/2022 14200.50 0.40 ug/L1
1,1-Dichloroethene ND 12/12/2022 14200.50 0.40 ug/L1
cis-1,2-Dichloroethene ND 12/12/2022 14200.50 0.40 ug/L1
trans-1,2-Dichloroethene ND 12/12/2022 14200.50 0.40 ug/L1
1,2-Dichloropropane ND 12/12/2022 14200.50 0.40 ug/L1
1,3-Dichloropropane ND 12/12/2022 14200.50 0.40 ug/L1
2,2-Dichloropropane ND 12/12/2022 14200.50 0.40 ug/L1
1,1-Dichloropropene ND 12/12/2022 14200.50 0.40 ug/L1
cis-1,3-Dichloropropene ND 12/12/2022 14200.50 0.40 ug/L1
trans-1,3-Dichloropropene ND 12/12/2022 14200.50 0.40 ug/L1
Diisopropyl ether (IPE)ND 12/12/2022 14200.50 0.40 ug/L1
Ethylbenzene ND 12/12/2022 14200.50 0.40 ug/L1
Hexachlorobutadiene ND 12/12/2022 14200.50 0.40 ug/L1
Isopropylbenzene (Cumene)ND 12/12/2022 14200.50 0.40 ug/L1
p-Isopropyltoluene (p-Cymene) ND 12/12/2022 14200.50 0.40 ug/L1
Methyl tertiary butyl ether (MTBE) ND 12/12/2022 14200.50 0.40 ug/L1
Methylene chloride ND 12/12/2022 14200.50 0.40 ug/L1
Naphthalene ND 12/12/2022 14200.50 0.40 ug/L1
n-Propylbenzene ND 12/12/2022 14200.50 0.40 ug/L1
Styrene ND 12/12/2022 14200.50 0.40 ug/L1
Note: Calculations are performed before rounding to avoid round-off errors in calculated results
LOQ = Limit of Quantitation ND = Not detected at or above the DL
J = Estimated result < LOQ and > DL
N = Recovery is out of criteria
P = The RPD between two GC columns exceeds 40%
+ = RPD is out of criteria
_DL = Detection Limit
* = RSD is out of criteria
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Page 26 of 43
Volatile Organic Compounds by GC/MS - MB
Batch:Prep Method:
Sample ID:XQ62472-001
62472 SM 6200B-2011
Analytical Method:SM 6200B-2011
Matrix:Aqueous
Parameter Result Q LOQ DL Units Analysis DateDil
1,1,1,2-Tetrachloroethane ND 12/12/2022 14200.50 0.40 ug/L1
1,1,2,2-Tetrachloroethane ND 12/12/2022 14200.50 0.40 ug/L1
Tetrachloroethene ND 12/12/2022 14200.50 0.40 ug/L1
Toluene ND 12/12/2022 14200.50 0.40 ug/L1
1,1,2-Trichloro-1,2,2-Trifluoroethane ND 12/12/2022 14200.50 0.40 ug/L1
1,2,3-Trichlorobenzene ND 12/12/2022 14200.50 0.40 ug/L1
1,2,4-Trichlorobenzene ND 12/12/2022 14200.50 0.40 ug/L1
1,1,1-Trichloroethane ND 12/12/2022 14200.50 0.40 ug/L1
1,1,2-Trichloroethane ND 12/12/2022 14200.50 0.40 ug/L1
Trichloroethene ND 12/12/2022 14200.50 0.40 ug/L1
Trichlorofluoromethane ND 12/12/2022 14200.50 0.40 ug/L1
1,2,3-Trichloropropane ND 12/12/2022 14200.50 0.40 ug/L1
1,3,5-Trimethylbenzene (Mesitylene) ND 12/12/2022 14200.50 0.40 ug/L1
1,2,4-Trimethylbenzene ND 12/12/2022 14200.50 0.40 ug/L1
Vinyl chloride ND 12/12/2022 14200.50 0.40 ug/L1
m+p - Xylenes ND 12/12/2022 14200.50 0.40 ug/L1
o - Xylenes ND 12/12/2022 14200.50 0.40 ug/L1
Surrogate Q % Rec Acceptance Limit
1,2-Dichloroethane-d4 100 70-130
Bromofluorobenzene 95 70-130
Toluene-d8 105 70-130
Note: Calculations are performed before rounding to avoid round-off errors in calculated results
LOQ = Limit of Quantitation ND = Not detected at or above the DL
J = Estimated result < LOQ and > DL
N = Recovery is out of criteria
P = The RPD between two GC columns exceeds 40%
+ = RPD is out of criteria
_DL = Detection Limit
* = RSD is out of criteria
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Page 27 of 43
Volatile Organic Compounds by GC/MS - LCS
Batch:Prep Method:
Sample ID:XQ62472-002
62472 SM 6200B-2011
Analytical Method:SM 6200B-2011
Matrix:Aqueous
Parameter Result Q % Rec
Spike
Amount Analysis Date
%Rec
LimitDil(ug/L)(ug/L)
Benzene 46 12/12/2022 1212925070-1301
Bromobenzene 52 12/12/2022 12121055070-1301
Bromochloromethane 45 12/12/2022 1212905070-1301
Bromodichloromethane 46 12/12/2022 1212925070-1301
Bromoform 52 12/12/2022 12121035070-1301
Bromomethane (Methyl bromide)42 12/12/2022 1212845060-1401
n-Butylbenzene 51 12/12/2022 12121015070-1301
sec-Butylbenzene 53 12/12/2022 12121065070-1301
tert-Butylbenzene 53 12/12/2022 12121065070-1301
Carbon tetrachloride 45 12/12/2022 1212905070-1301
Chlorobenzene 50 12/12/2022 12121005070-1301
Chloroethane 38 12/12/2022 1212765060-1401
Chloroform 41 12/12/2022 1212825070-1301
Chloromethane (Methyl chloride)33 12/12/2022 1212675060-1401
2-Chlorotoluene 50 12/12/2022 12121015070-1301
4-Chlorotoluene 52 12/12/2022 12121045070-1301
Dibromochloromethane 51 12/12/2022 12121015070-1301
1,2-Dibromoethane (EDB)49 12/12/2022 1212985070-1301
Dibromomethane (Methylene bromide)43 12/12/2022 1212875070-1301
1,2-Dichlorobenzene 50 12/12/2022 1212995070-1301
1,3-Dichlorobenzene 51 12/12/2022 12121025070-1301
1,4-Dichlorobenzene 48 12/12/2022 1212955070-1301
Dichlorodifluoromethane 35 12/12/2022 1212715060-1401
1,1-Dichloroethane 40 12/12/2022 1212805070-1301
1,2-Dichloroethane 42 12/12/2022 1212845070-1301
1,1-Dichloroethene 45 12/12/2022 1212905070-1301
cis-1,2-Dichloroethene 43 12/12/2022 1212865070-1301
trans-1,2-Dichloroethene 44 12/12/2022 1212885070-1301
1,2-Dichloropropane 45 12/12/2022 1212905070-1301
1,3-Dichloropropane 49 12/12/2022 1212975070-1301
2,2-Dichloropropane 45 12/12/2022 1212895070-1301
1,1-Dichloropropene 40 12/12/2022 1212805070-1301
cis-1,3-Dichloropropene 50 12/12/2022 1212995070-1301
trans-1,3-Dichloropropene 51 12/12/2022 12121025070-1301
Diisopropyl ether (IPE)45 12/12/2022 1212895070-1301
Ethylbenzene 51 12/12/2022 12121035070-1301
Hexachlorobutadiene 48 12/12/2022 1212975070-1301
Isopropylbenzene (Cumene)53 12/12/2022 12121075070-1301
p-Isopropyltoluene (p-Cymene)55 12/12/2022 12121105070-1301
Methyl tertiary butyl ether (MTBE)44 12/12/2022 1212885070-1301
Methylene chloride 45 12/12/2022 1212895070-1301
Naphthalene 51 12/12/2022 12121025070-1301
n-Propylbenzene 50 12/12/2022 12121015070-1301
Styrene 56 12/12/2022 12121125070-1301
Note: Calculations are performed before rounding to avoid round-off errors in calculated results
LOQ = Limit of Quantitation ND = Not detected at or above the DL
J = Estimated result < LOQ and > DL
N = Recovery is out of criteria
P = The RPD between two GC columns exceeds 40%
+ = RPD is out of criteria
_DL = Detection Limit
* = RSD is out of criteria
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Page 28 of 43
Volatile Organic Compounds by GC/MS - LCS
Batch:Prep Method:
Sample ID:XQ62472-002
62472 SM 6200B-2011
Analytical Method:SM 6200B-2011
Matrix:Aqueous
Parameter Result Q % Rec
Spike
Amount Analysis Date
%Rec
LimitDil(ug/L)(ug/L)
1,1,1,2-Tetrachloroethane 52 12/12/2022 12121045070-1301
1,1,2,2-Tetrachloroethane 47 12/12/2022 1212955070-1301
Tetrachloroethene 51 12/12/2022 12121025070-1301
Toluene 51 12/12/2022 12121025070-1301
1,1,2-Trichloro-1,2,2-Trifluoroethane 48 12/12/2022 1212975070-1301
1,2,3-Trichlorobenzene 53 12/12/2022 12121065070-1301
1,2,4-Trichlorobenzene 54 12/12/2022 12121085070-1301
1,1,1-Trichloroethane 44 12/12/2022 1212895070-1301
1,1,2-Trichloroethane 49 12/12/2022 1212995070-1301
Trichloroethene 47 12/12/2022 1212945070-1301
Trichlorofluoromethane 44 12/12/2022 1212885060-1401
1,2,3-Trichloropropane 49 12/12/2022 1212985070-1301
1,3,5-Trimethylbenzene (Mesitylene)54 12/12/2022 12121075070-1301
1,2,4-Trimethylbenzene 54 12/12/2022 12121085070-1301
Vinyl chloride 37 12/12/2022 1212745060-1401
m+p - Xylenes 54 12/12/2022 12121075070-1301
o - Xylenes 53 12/12/2022 12121065070-1301
Surrogate Q % Rec Acceptance Limit
1,2-Dichloroethane-d4 76 70-130
Bromofluorobenzene 89 70-130
Toluene-d8 93 70-130
Note: Calculations are performed before rounding to avoid round-off errors in calculated results
LOQ = Limit of Quantitation ND = Not detected at or above the DL
J = Estimated result < LOQ and > DL
N = Recovery is out of criteria
P = The RPD between two GC columns exceeds 40%
+ = RPD is out of criteria
_DL = Detection Limit
* = RSD is out of criteria
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 29 of 43
Volatile Organic Compounds by GC/MS - MS
Batch:Prep Method:
Sample ID:XL06011-001MS
62472 SM 6200B-2011
Analytical Method:SM 6200B-2011
Matrix:Aqueous
Parameter Result Q % Rec
Spike
Amount Analysis Date
%Rec
Limit
Sample
Amount Dil(ug/L) (ug/L) (ug/L)
Benzene 2000 12/12/2022 1754N6250070-130170010
Bromobenzene 420 12/12/2022 17548350070-130ND10
Bromochloromethane 350 12/12/2022 17547050070-130ND10
Bromodichloromethane 370 12/12/2022 17547450070-130ND10
Bromoform 400 12/12/2022 17548050070-130ND10
Bromomethane (Methyl bromide)350 12/12/2022 17547050060-140ND10
n-Butylbenzene 450 12/12/2022 17548950070-1301110
sec-Butylbenzene 450 12/12/2022 17548850070-1305.2 10
tert-Butylbenzene 450 12/12/2022 17549050070-130ND10
Carbon tetrachloride 370 12/12/2022 17547450070-130ND10
Chlorobenzene 410 12/12/2022 17548150070-1305.4 10
Chloroethane 320 12/12/2022 17546450060-140ND10
Chloroform 350 12/12/2022 1754N6650070-1302310
Chloromethane (Methyl chloride)270 12/12/2022 1754N5550060-140ND10
2-Chlorotoluene 450 12/12/2022 17548450070-1302810
4-Chlorotoluene 430 12/12/2022 17548650070-130ND10
Dibromochloromethane 410 12/12/2022 17548250070-130ND10
1,2-Dibromoethane (EDB)400 12/12/2022 17548150070-130ND10
Dibromomethane (Methylene bromide)350 12/12/2022 1754N6950070-130ND10
1,2-Dichlorobenzene 410 12/12/2022 17548150070-130ND10
1,3-Dichlorobenzene 410 12/12/2022 17548250070-130ND10
1,4-Dichlorobenzene 390 12/12/2022 17547850070-130ND10
Dichlorodifluoromethane 270 12/12/2022 1754N5550060-140ND10
1,1-Dichloroethane 320 12/12/2022 1754N6450070-130ND10
1,2-Dichloroethane 340 12/12/2022 1754N6850070-130ND10
1,1-Dichloroethene 370 12/12/2022 17547450070-130ND10
cis-1,2-Dichloroethene 340 12/12/2022 1754N6950070-130ND10
trans-1,2-Dichloroethene 350 12/12/2022 1754N6950070-130ND10
1,2-Dichloropropane 370 12/12/2022 17547450070-130ND10
1,3-Dichloropropane 390 12/12/2022 17547850070-130ND10
2,2-Dichloropropane 400 12/12/2022 17548050070-130ND10
1,1-Dichloropropene 330 12/12/2022 1754N6650070-130ND10
cis-1,3-Dichloropropene 390 12/12/2022 17547750070-130ND10
trans-1,3-Dichloropropene 400 12/12/2022 17548050070-130ND10
Diisopropyl ether (IPE)420 12/12/2022 17547250070-1306410
Ethylbenzene 760 12/12/2022 17549150070-13031010
Hexachlorobutadiene 400 12/12/2022 17547950070-130ND10
Isopropylbenzene (Cumene)460 12/12/2022 17548850070-1302310
p-Isopropyltoluene (p-Cymene)460 12/12/2022 17549150070-1304.8 10
Methyl tertiary butyl ether (MTBE)340 12/12/2022 1754N6550070-1301510
Methylene chloride 350 12/12/2022 1754N6950070-1306.1 10
Naphthalene 490 12/12/2022 17548450070-1306710
n-Propylbenzene 480 12/12/2022 17548450070-1305610
Styrene 470 12/12/2022 17549350070-130ND10
Note: Calculations are performed before rounding to avoid round-off errors in calculated results
LOQ = Limit of Quantitation ND = Not detected at or above the DL
J = Estimated result < LOQ and > DL
N = Recovery is out of criteria
P = The RPD between two GC columns exceeds 40%
+ = RPD is out of criteria
_DL = Detection Limit
* = RSD is out of criteria
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 30 of 43
Volatile Organic Compounds by GC/MS - MS
Batch:Prep Method:
Sample ID:XL06011-001MS
62472 SM 6200B-2011
Analytical Method:SM 6200B-2011
Matrix:Aqueous
Parameter Result Q % Rec
Spike
Amount Analysis Date
%Rec
Limit
Sample
Amount Dil(ug/L) (ug/L) (ug/L)
1,1,1,2-Tetrachloroethane 410 12/12/2022 17548350070-130ND10
1,1,2,2-Tetrachloroethane 390 12/12/2022 17547850070-130ND10
Tetrachloroethene 420 12/12/2022 17548550070-130ND10
Toluene 890 12/12/2022 17548650070-13046010
1,1,2-Trichloro-1,2,2-Trifluoroethane 390 12/12/2022 17547850070-130ND10
1,2,3-Trichlorobenzene 410 12/12/2022 17548250070-130ND10
1,2,4-Trichlorobenzene 440 12/12/2022 17548850070-130ND10
1,1,1-Trichloroethane 370 12/12/2022 17547350070-130ND10
1,1,2-Trichloroethane 410 12/12/2022 17548150070-130ND10
Trichloroethene 380 12/12/2022 17547650070-130ND10
Trichlorofluoromethane 370 12/12/2022 17547450060-140ND10
1,2,3-Trichloropropane 390 12/12/2022 17547850070-130ND10
1,3,5-Trimethylbenzene (Mesitylene)630 12/12/2022 17549150070-13018010
1,2,4-Trimethylbenzene 1100 12/12/2022 17549650070-13065010
Vinyl chloride 320 12/12/2022 17546350060-140ND10
m+p - Xylenes 1200 12/12/2022 17549350070-13074010
o - Xylenes 740 12/12/2022 17549250070-13028010
Surrogate Q % Rec Acceptance Limit
1,2-Dichloroethane-d4 N 60 70-130
Bromofluorobenzene 73 70-130
Toluene-d8 75 70-130
Note: Calculations are performed before rounding to avoid round-off errors in calculated results
LOQ = Limit of Quantitation ND = Not detected at or above the DL
J = Estimated result < LOQ and > DL
N = Recovery is out of criteria
P = The RPD between two GC columns exceeds 40%
+ = RPD is out of criteria
_DL = Detection Limit
* = RSD is out of criteria
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 31 of 43
Volatile Organic Compounds by GC/MS - MSD
Batch:Prep Method:
Sample ID:XL06011-001MD
62472 SM 6200B-2011
Analytical Method:SM 6200B-2011
Matrix:Aqueous
Parameter Result Q % Rec
Spike
Amount Analysis Date% RPD
%Rec
Limit % RPD
Limit
Sample
Amount Dil(ug/L) (ug/L) (ug/L)
Benzene 1900 12/12/2022 1819N5050070-1303.2 20170010
Bromobenzene 420 12/12/2022 18198350070-1300.071 20ND10
Bromochloromethane 350 12/12/2022 1819N6950070-1301.1 20ND10
Bromodichloromethane 390 12/12/2022 18197750070-1304.0 20ND10
Bromoform 400 12/12/2022 18198150070-1300.80 20ND10
Bromomethane (Methyl bromide)310 12/12/2022 18196250060-14012 20ND10
n-Butylbenzene 450 12/12/2022 18198850070-1300.35 201110
sec-Butylbenzene 440 12/12/2022 18198750070-1300.85 205.2 10
tert-Butylbenzene 440 12/12/2022 18198850070-1302.2 20ND10
Carbon tetrachloride 370 12/12/2022 18197350070-1301.3 20ND10
Chlorobenzene 410 12/12/2022 18198150070-1300.78 205.4 10
Chloroethane 290 12/12/2022 1819N5850060-1409.0 20ND10
Chloroform 350 12/12/2022 1819N6550070-1300.68 202310
Chloromethane (Methyl chloride)250 12/12/2022 1819N5050060-1408.3 20ND10
2-Chlorotoluene 460 12/12/2022 18198650070-1302.3 202810
4-Chlorotoluene 430 12/12/2022 18198550070-1301.3 20ND10
Dibromochloromethane 410 12/12/2022 18198250070-1300.55 20ND10
1,2-Dibromoethane (EDB)390 12/12/2022 18197850070-1303.6 20ND10
Dibromomethane (Methylene bromide)360 12/12/2022 18197150070-1302.9 20ND10
1,2-Dichlorobenzene 390 12/12/2022 18197950070-1302.9 20ND10
1,3-Dichlorobenzene 410 12/12/2022 18198150070-1301.2 20ND10
1,4-Dichlorobenzene 390 12/12/2022 18197750070-1300.69 20ND10
Dichlorodifluoromethane 240 12/12/2022 1819N4950060-14011 20ND10
1,1-Dichloroethane 320 12/12/2022 1819N6550070-1300.56 20ND10
1,2-Dichloroethane 330 12/12/2022 1819N6750070-1302.0 20ND10
1,1-Dichloroethene 370 12/12/2022 18197550070-1301.0 20ND10
cis-1,2-Dichloroethene 350 12/12/2022 1819N6950070-1300.53 20ND10
trans-1,2-Dichloroethene 360 12/12/2022 18197150070-1302.9 20ND10
1,2-Dichloropropane 370 12/12/2022 18197550070-1300.40 20ND10
1,3-Dichloropropane 380 12/12/2022 18197650070-1303.0 20ND10
2,2-Dichloropropane 370 12/12/2022 18197450070-1307.7 20ND10
1,1-Dichloropropene 340 12/12/2022 1819N6950070-1303.2 20ND10
cis-1,3-Dichloropropene 380 12/12/2022 18197750070-1300.81 20ND10
trans-1,3-Dichloropropene 400 12/12/2022 18198050070-1300.51 20ND10
Diisopropyl ether (IPE)420 12/12/2022 18197150070-1300.35 206410
Ethylbenzene 750 12/12/2022 18198850070-1301.8 2031010
Hexachlorobutadiene 410 12/12/2022 18198150070-1302.7 20ND10
Isopropylbenzene (Cumene)460 12/12/2022 18198850070-1300.71 202310
p-Isopropyltoluene (p-Cymene)450 12/12/2022 18199050070-1300.87 204.8 10
Methyl tertiary butyl ether (MTBE)350 12/12/2022 1819N6750070-1303.6 201510
Methylene chloride 350 12/12/2022 1819N6850070-1300.99 206.1 10
Naphthalene 480 12/12/2022 18198250070-1301.6 206710
n-Propylbenzene 490 12/12/2022 18198750070-1302.9 205610
Styrene 460 12/12/2022 18199350070-1300.40 20ND10
Note: Calculations are performed before rounding to avoid round-off errors in calculated results
LOQ = Limit of Quantitation ND = Not detected at or above the DL
J = Estimated result < LOQ and > DL
N = Recovery is out of criteria
P = The RPD between two GC columns exceeds 40%
+ = RPD is out of criteria
_DL = Detection Limit
* = RSD is out of criteria
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 32 of 43
Volatile Organic Compounds by GC/MS - MSD
Batch:Prep Method:
Sample ID:XL06011-001MD
62472 SM 6200B-2011
Analytical Method:SM 6200B-2011
Matrix:Aqueous
Parameter Result Q % Rec
Spike
Amount Analysis Date% RPD
%Rec
Limit % RPD
Limit
Sample
Amount Dil(ug/L) (ug/L) (ug/L)
1,1,1,2-Tetrachloroethane 410 12/12/2022 18198350070-1300.057 20ND10
1,1,2,2-Tetrachloroethane 380 12/12/2022 18197750070-1301.8 20ND10
Tetrachloroethene 420 12/12/2022 18198550070-1300.16 20ND10
Toluene 860 12/12/2022 18198150070-1302.6 2046010
1,1,2-Trichloro-1,2,2-Trifluoroethane 400 12/12/2022 18197950070-1301.4 20ND10
1,2,3-Trichlorobenzene 410 12/12/2022 18198350070-1300.67 20ND10
1,2,4-Trichlorobenzene 440 12/12/2022 18198850070-1300.64 20ND10
1,1,1-Trichloroethane 370 12/12/2022 18197350070-1300.52 20ND10
1,1,2-Trichloroethane 400 12/12/2022 18198050070-1301.6 20ND10
Trichloroethene 390 12/12/2022 18197750070-1301.8 20ND10
Trichlorofluoromethane 340 12/12/2022 18196850060-1408.4 20ND10
1,2,3-Trichloropropane 380 12/12/2022 18197650070-1303.1 20ND10
1,3,5-Trimethylbenzene (Mesitylene)620 12/12/2022 18198950070-1301.8 2018010
1,2,4-Trimethylbenzene 1100 12/12/2022 18198850070-1303.5 2065010
Vinyl chloride 270 12/12/2022 1819N5550060-14014 20ND10
m+p - Xylenes 1200 12/12/2022 18198650070-1302.9 2074010
o - Xylenes 710 12/12/2022 18198750070-1303.0 2028010
Surrogate Q % Rec Acceptance Limit
1,2-Dichloroethane-d4 N 58 70-130
Bromofluorobenzene 70 70-130
Toluene-d8 73 70-130
Note: Calculations are performed before rounding to avoid round-off errors in calculated results
LOQ = Limit of Quantitation ND = Not detected at or above the DL
J = Estimated result < LOQ and > DL
N = Recovery is out of criteria
P = The RPD between two GC columns exceeds 40%
+ = RPD is out of criteria
_DL = Detection Limit
* = RSD is out of criteria
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 33 of 43
EDB & DBCP by Microextraction - MB
Batch:Prep Method:
Prep Date:
Sample ID:XQ63065-001
63065 504.1
12/19/2022 1047Analytical Method:504.1
Matrix:Aqueous
Parameter Result Q LOQ DL Units Analysis DateDil
1,2-Dibromoethane (EDB)ND 12/19/2022 12450.020 0.0040 ug/L1
Surrogate Q % Rec Acceptance Limit
1,1,1,2-Tetrachloroethane 69 57-137
Note: Calculations are performed before rounding to avoid round-off errors in calculated results
LOQ = Limit of Quantitation ND = Not detected at or above the DL
J = Estimated result < LOQ and > DL
N = Recovery is out of criteria
P = The RPD between two GC columns exceeds 40%
+ = RPD is out of criteria
_DL = Detection Limit
* = RSD is out of criteria
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 34 of 43
EDB & DBCP by Microextraction - LCS
Batch:Prep Method:
Prep Date:
Sample ID:XQ63065-002
63065 504.1
12/19/2022 1047Analytical Method:504.1
Matrix:Aqueous
Parameter Result Q % Rec
Spike
Amount Analysis Date
%Rec
LimitDil(ug/L)(ug/L)
1,2-Dibromoethane (EDB)0.22 12/19/2022 1257870.25 70-1301
Surrogate Q % Rec Acceptance Limit
1,1,1,2-Tetrachloroethane 73 57-137
Note: Calculations are performed before rounding to avoid round-off errors in calculated results
LOQ = Limit of Quantitation ND = Not detected at or above the DL
J = Estimated result < LOQ and > DL
N = Recovery is out of criteria
P = The RPD between two GC columns exceeds 40%
+ = RPD is out of criteria
_DL = Detection Limit
* = RSD is out of criteria
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 35 of 43
Methane - MB
Batch:
Sample ID:XQ62170-001
62170
Analytical Method:RSK - 175
Matrix:Aqueous
Parameter Result Q LOQ DL Units Analysis DateDil
Methane 3.1 12/08/2022 1153J102.5 ug/L1
Note: Calculations are performed before rounding to avoid round-off errors in calculated results
LOQ = Limit of Quantitation ND = Not detected at or above the DL
J = Estimated result < LOQ and > DL
N = Recovery is out of criteria
P = The RPD between two GC columns exceeds 40%
+ = RPD is out of criteria
_DL = Detection Limit
* = RSD is out of criteria
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 36 of 43
Methane - LCS
Batch:
Sample ID:XQ62170-002
62170
Analytical Method:RSK - 175
Matrix:Aqueous
Parameter Result Q % Rec
Spike
Amount Analysis Date
%Rec
LimitDil(ug/L)(ug/L)
Methane 320 12/08/2022 103110930070-1301
Note: Calculations are performed before rounding to avoid round-off errors in calculated results
LOQ = Limit of Quantitation ND = Not detected at or above the DL
J = Estimated result < LOQ and > DL
N = Recovery is out of criteria
P = The RPD between two GC columns exceeds 40%
+ = RPD is out of criteria
_DL = Detection Limit
* = RSD is out of criteria
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 37 of 43
Methane - LCSD
Batch:
Sample ID:XQ62170-003
62170
Analytical Method:RSK - 175
Matrix:Aqueous
Parameter Result Q % Rec
Spike
Amount Analysis Date% RPD
%Rec
Limit % RPD
LimitDil(ug/L) (ug/L)
Methane 320 12/08/2022 111110930070-1300.47 301
Note: Calculations are performed before rounding to avoid round-off errors in calculated results
LOQ = Limit of Quantitation ND = Not detected at or above the DL
J = Estimated result < LOQ and > DL
N = Recovery is out of criteria
P = The RPD between two GC columns exceeds 40%
+ = RPD is out of criteria
_DL = Detection Limit
* = RSD is out of criteria
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 38 of 43
ICP-AES Metals - MB
Batch:Prep Method:
Prep Date:
Sample ID:XQ61709-001
61709 3005A
12/08/2022 0957Analytical Method:6010D
Matrix:Aqueous
Parameter Result Q LOQ DL Units Analysis DateDil
Iron ND 12/13/2022 10320.10 0.040 mg/L1
Lead ND 12/09/2022 03490.010 0.0047 mg/L1
Manganese ND 12/09/2022 03490.015 0.0019 mg/L1
Note: Calculations are performed before rounding to avoid round-off errors in calculated results
LOQ = Limit of Quantitation ND = Not detected at or above the DL
J = Estimated result < LOQ and > DL
N = Recovery is out of criteria
P = The RPD between two GC columns exceeds 40%
+ = RPD is out of criteria
_DL = Detection Limit
* = RSD is out of criteria
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 39 of 43
ICP-AES Metals - LCS
Batch:Prep Method:
Prep Date:
Sample ID:XQ61709-002
61709 3005A
12/08/2022 0957Analytical Method:6010D
Matrix:Aqueous
Parameter Result Q % Rec
Spike
Amount Analysis Date
%Rec
LimitDil(mg/L)(mg/L)
Iron 23 12/13/2022 10361132080-1201
Lead 0.40 12/09/2022 03531010.40 80-1201
Manganese 2.0 12/09/2022 03531002.0 80-1201
Note: Calculations are performed before rounding to avoid round-off errors in calculated results
LOQ = Limit of Quantitation ND = Not detected at or above the DL
J = Estimated result < LOQ and > DL
N = Recovery is out of criteria
P = The RPD between two GC columns exceeds 40%
+ = RPD is out of criteria
_DL = Detection Limit
* = RSD is out of criteria
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 40 of 43
Chain of Custody
and
Miscellaneous Documents
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)

Page 41 of 43