AS-3737_28866_CA_CAPR_20230703

WithersRavenel
Our People. Your Success.
115 MacKenan Drive | Cary, NC 27511
t: 919.469.3340 | f: 919.467.6008 | www.withersravenel.com | License No. F-1479
Asheville | Cary | Charlotte | Greensboro | Lumberton | Pittsboro | Raleigh | Southern Pines | Wilmington

July 3, 2023 State of North Carolina Department of Environmental Quality
Federal & State Lead Program
Division of Waste Management-Underground Storage Tank Section 1646 Mail Service Center Raleigh, North Carolina 27699-1646
Attn: Mr. Scott Ryals, P.E.
RE: Corrective Action Performance Report: March 2023 through May 2023 Cane Creek Grocery 4982 US Highway 64
Union Mills, Rutherford County, North Carolina
Groundwater Incident Number: 28866 UST Number: AS-3737 WR Project Number: 23-0307-AK
Mr. Ryals:
WithersRavenel, Inc. (WR) has performed three months of operation and maintenance (O&M) services for the site in association with Task Authorization – 01 (TA-01) for the project under North Carolina Department of Environmental Quality (NCDEQ) Contract # N70522-C
authorized on March 10, 2023.
WR appreciates the opportunity to be of service to the Federal & State Lead Program. Should you have any questions regarding the attached, please contact us at [phone].
Cordially,
WithersRavenel

Flora D’Souza, CHMM G. Matthew James, PG
Environmental Project Scientist II Project Manager

Cane Creek Grocery Incident # 28866 WR Project # 23-0307-AK Corrective Action Performance Report July 2023 ii

TABLE OF CONTENTS

A. SITE INFORMATION .......................................................................................................... 1
B. EXECUTIVE SUMMARY ..................................................................................................... 2
C. SITE HISTORY AND CHARACTERIZATION .................................................................... 2
D. REMEDIATION SYSTEM OPERATION ............................................................................ 3
E. CONCLUSIONS AND RECOMMENDATIONS ................................................................ 4
FIGURES Figure 1 General Location Map Figure 2 Site Map Figure 3 Receptor Locations TABLES
Table B-5A Public & Private Water Supply Well Information
APPENDICES Appendix A Copy of O&M Forms Appendix B Historical Groundwater Elevations and Groundwater Analytical Data

WithersRavenel
Our People. Your Success.
Cane Creek Grocery Incident # 28866 WR Project # 23-0307-AK
Corrective Action Performance Report July 2023
Page 1 of 5
A.SITE INFORMATION
A-1. Site Identification
Date of Report: June 30, 2023 UST Number: AS-3737
Facility ID: 00-0-0000008810 Incident Number: 13526
Site Risk: High
Site Name: Cane Creek Grocery
Rank: H230D
Land Use Class: Commercial
Site Street Address: 4982 US Highway 64 Site City/Town: Union Mills Zip: 28139 County: Rutherford Description of Geographical Data Point: Gasoline dispenser Location Method: Google Earth® Latitude: 35.490273° N Longitude: -81.867140° W
A-2. Information about Contacts Associated with the Leaking UST SystemUST Owner/Operator: Petroleum World, Inc. (Dissolved) Unknown Tel: Unknown Property Owner: Punjab Lions LLC Tel: Unknown Address: 4982 US Highway 64
Union Mills, NC 28167
Property Occupants: Cane Creek Grocery Tel: [phone]Consultant/Contractor: WithersRavenel, Inc. Tel: [phone]
Address: 115 MacKenan Drive, Cary, NC 27511
Analytical Laboratory: Address: State Certification:
Waypoint Analytical, Inc. 449 Springbrook Rd., Charlotte, NC 28217 402
Tel: [phone]
A-3. Information about ReleaseDate Discovered:April 2010 Estimated Quantity of Release(s):Unknown Cause of Release:Unknown Source of Release:Gasoline dispenser Size(s) & Content(s) of UST system(s)from which release occurred:Not Applicable
Criteria Used to Classify Risk:Free product and Proximity to Surface Water and Water Supply Wells
A-4. Information about Monitoring ReportDate(s) of Assessment/Monitoring Event(s): March 2023 through May 2023
A-5. Certification
I, G. Matthew James, a Professional Geologist for WithersRavenel, Inc., do certify that the information contained in this report is correct and accurate to the best of my knowledge.
WithersRavenel, Inc. is licensed to practice geology and engineering in North Carolina. The certification numbers of the corporation are C-293 (Geology) and F-1479 (Engineering).
07-03-2023

WithersRavenel
Our People. Your Success.

Cane Creek Grocery Incident # 28866 WR Project # 23-0307-AK
Corrective Action Performance Report July 2023
Page 2 of 5

B. EXECUTIVE SUMMARY
1. Scope of Services

WithersRavenel, Inc. (WR), in association with TA-01 for the site, completed the following approved Scopes of Services:
• TA-01:
o Three O&M events were completed during March, April, and May 2023.
o Replace oil in Dekker on April 20, 2023.
o WR gauged for free phase product in monitoring wells MW-3, MW-4, and MW-8 during April and May 2023.
o Pumped water/light non-aqueous liquid (LNAPL) from monitoring wells MW-3,
MW-4, and MW-8 during the April 2023 and May 2023 O&M events.
o Preparation and submittal of the enclosed report. C. SITE HISTORY AND CHARACTERIZATION

The site is located at 4982 US Highway 64 in Union Mills, Rutherford County, North Carolina,
and is currently occupied by Cane Creek Mart. A site location map is provided as Figure 1 and the site plan is depicted on Figure 2. The release was discovered in 2010 and is associated with a leak from a gasoline fuel dispenser.
Petroleum World, Inc. (PWI) was the former owner of the UST System.
1. Site Characteristics and Receptor Information
• Land Use of Site: The site is currently utilized as a convenience store with retail
petroleum sales and automotive repair. Historically the site was utilized as a retail petroleum fueling station.
• Land Use of Surrounding Area: The land use of the surrounding area is predominantly
residential and undeveloped.
• Topography: The site is approximately 940 feet above the Nation Geodetic Vertical
Datum of 1929. Based upon the topographic map reviewed, the area of the subject
property slopes predominantly to the north-northeast.
• Surface Water: An unnamed tributary of Cane Creek lies along the north and
northeastern property boundary.

• Water Supply Wells: A total of 12 water supply wells are located within 1,500 feet of the source area. There are two (WSW-1 and WSW-5) active drinking water supply wells
within 500 feet of the source area. Water supply well WSW-1 is located approximately
225 feet from the source area. One inactive drinking water supply well (WSW-2) is located approximately 115 feet from the source area. Five water supply wells are located between 500 feet and 1,000 feet of the source area. Four water supply wells are located

WithersRavenel
Our People. Your Success.

Cane Creek Grocery Incident # 28866 WR Project # 23-0307-AK
Corrective Action Performance Report July 2023
Page 3 of 5

between 1,000 feet and 1,500 feet of the source area. Municipal water is not available to the site or surrounding area.

• Details regarding the adjacent properties with water supply wells are summarized in Table B-5A and the approximate location of the water supply wells are depicted on Figure 3. The land use of the surrounding area is a mixture of residential, undeveloped,
and agricultural properties.

• Soils underlying the site are characterized as Chewacla loam (zero to two percent slopes, frequently flooded).

• According to the 1985 USGS Geologic Map of North Carolina, the site is underlain by the Inner Piedmont Belt of the Piedmont Physiographic Province. Bedrock in this area is migmatitic granitic gneiss, which is characterized as foliated to massive granitic to quartz
dioritic, biotite gneiss and amphibolite common.

• WR took over site O&M activities in March 2023.
D. REMEDIATION SYSTEM OPERATION

1. Groundwater Monitoring
Groundwater monitoring activities were not completed during completion of this task authorization. During this O&M period, WR gauged the following wells for LNAPL: MW-3, MW-4, and MW-8. Monitoring well gauging information is included in the table below.
LNAPL and petroleum contaminated water was pumped from monitoring wells MW-3, MW-
4, and MW-8 during the April 2023 and May 2023 O&M events.
Recovery Well
4/20/2023 Depth to LNAPL (ft)
4/20/2023 Depth to Water (ft)
5/18/2023 Depth to LNAPL (ft)
5/18/2023 Depth to Water (ft) MW-3 -- 7.27 -- 7.43
MW-4 -- 7.06 -- 7.22 MW-8 6.99 7.08 7.21 7.29
LNAPL was measured in MW-8 at a thickness of 0.09 feet in April 2023 and 0.08 feet in May 2023. Historical groundwater elevations and free product thicknesses are provided as Appendix B.
2. Remediation System Status
During this reporting period, WR conducted system maintenance visits on March 16, April 20, and May 18, 2023. O&M field forms are included as Appendix A.

WithersRavenel
Our People. Your Success.

Cane Creek Grocery Incident # 28866 WR Project # 23-0307-AK
Corrective Action Performance Report July 2023
Page 4 of 5

3. General System Operation
A pilot test was conducted in July 2012 on air sparge well (AS-1) and dual-phase extraction
(DPE) well (DPE-1). Ten AS wells (AS-2 through AS-11) and six DPE wells (DPE-2 through DPE-7) were installed in October 2013. Three vapor extraction (VE) trenches were installed at the site between September 2014 and February 2015 during the construction and installation of the current remediation system. The three VE trenches are approximately six
feet long, two feet wide and two feet deep. The current remediation system is comprised of
a Dekker brand oil-sealed liquid-ring pump (LRP) which provides vacuum to operate the DPE and/or VE, and a rotary screw compressor for air sparging. Due to petroleum vapors entering the onsite building during the operation of the air sparge system, air sparging has not been conducted at the site since February 16, 2015. The current remediation system began
operating on February 12, 2015.
The DPE system is used during operation and maintenance (O&M) visits to recover LNAPL and petroleum contaminated water from select monitoring wells. A stinger pipe is lowered into the monitoring well and connected to the DPE line to recover water/LNAPL from the
well. Recovered fluids are stored in a 3,000-gallon holding tank that is pumped out by an
environmental service provider once the tank reaches full capacity. 4. Total Hours of Operation During the Period
Between the dates of March 16, 2023 and May 18, 2023, the remediation system operated
for 344 hours. The system was down between March 16 and April 20, 2023 due to low oil. Oil was added to the Dekker on April 20, 2023 and the system was restarted. On May 18, 2023, the system was found down upon arrival due to high discharge temperature. 5. System Repairs
There were no system repairs during this O&M period. E. CONCLUSIONS AND RECOMMENDATIONS

The following summarizes the O&M activities conducted during the months of March, April, and May 2023.
• Three O&M events were completed during March, April, and May 2023.
• Replace oil in Dekker on April 20, 2023.
• WR gauged for LNAPL product in monitoring wells MW-3, MW-4, and MW-8 during April
and May 2023. LNAPL was measured in MW-8 at a thickness of 0.09 feet in April 2023 and 0.08 feet in May 2023.
• WR pumped water/LNAPL from monitoring wells MW-3, MW-4, and MW-8 during the April
20 and May 18, 2023 O&M events.
• During this period, the system operated for 344 hours.

WithersRavenel
Our People. Your Success.

Cane Creek Grocery Incident # 28866 WR Project # 23-0307-AK
Corrective Action Performance Report July 2023
Page 5 of 5

Based on the above, the following recommendations are presented:
• Continue system operation and conduct five O&M visits per quarter to increase system operation time by restarting system more frequently following the system being down due to high discharge temperatures or power outages.
• Explore restarting the air sparge system by limiting operation to AS-1, AS-8, AS-9, and AS-
10.
• Continue pumping petroleum impacted groundwater and/or LNAPL from MW-3, MW-4, and MW-8.
• Conduct semi-annual monitoring well, water supply well, and surface water sampling events.

FIGURES
KBB
FD
DRAWN BY:
06/28/2023 23-0307-AK
1
SCALE:FIGURE NO.:
PROJECT NO.:DATE:APPROVED BY:
CANE CREEK GROCERY (TF#28866)
4982 US HIGHWAY 64
UNION MILLS, RUTHERFORD COUNTY, NC
GENERAL LOCATION MAP
WithersRavenel
Our People. Your Success.
115 MacKenan Drive | Cary, NC 27511 | t: 919.469.3340 | license #: F-1479 | www.withersravenel.com
1"=500 '
GRAPHIC SCALE
1 inch = 500 ft.
0 500250 1000
US HIGHWAY 64
MW-5MW-6MW-3MW-8MW-9MW-1MW-7MW-2MW-4ED THOMPSON ROADAS(3)AS(1)AS(2)AS(4)AS(7)AS(9)AS(5)AS(10)AS(6)DPE(1)DPE(7)DPE(3)DPE(2)DPE(3)DPE(5)DPE(6)AS(8)KBB
FD
DRAWN BY:
06/28/2023 23-0307-AK
2
SCALE:FIGURE NO.:
PROJECT NO.:DATE:APPROVED BY:SITE MAPWithersRavenel
Engineers | Planners | Surveyors
115 MacKenan Drive | Cary, NC 27511 | t: 919.469.3340 | license #: F-1479 | www.withersravenel.com
1"=30 'GRAPHIC SCALE1 inch = 30 ft.0301560CANE CREEK GROCERY
(TF#28866)
4982 US HIGHWAY 64
UNION MILLS, RUTHERFORD COUNTY, NC
KBB
FD
DRAWN BY:
06/28/2023 23-0307-AK
3
SCALE:FIGURE NO.:
PROJECT NO.:DATE:APPROVED BY:RECEPTOR LOCATIONSWithersRavenel
Engineers | Planners | Surveyors
115 MacKenan Drive | Cary, NC 27511 | t: 919.469.3340 | license #: F-1479 | www.withersravenel.com
1"=300 'GRAPHIC SCALE1 inch = 300 ft.0300150600CANE CREEK GROCERY
(TF#28866)
4982 US HIGHWAY 64
UNION MILLS, RUTHERFORD COUNTY, NC

TABLES

Notes:
1)
2) Location relative to groundwater flow is based on all groundwater flow data prior to 2021.
Well ID Parcel
Number Property Address County Property Owner Property Owner Address
TABLE B-5A
PUBLIC & PRIVATE WATER SUPPLY WELL INFORMATION
Cane Creek Grocery
Incident # 28866
4982 US Highway 64
Union Mills, NC
Well location address and property owner information was obtained from historical reporting for the incident as well as the Guilford County GIS Website.
Well Use Well Depth
(feet)
Distance (ft)/ Direction
from Source (feet)
Location Relative to
Groundwater Flow
Unknown
Unknown 225 SWWSW-1 1012579 Rutherford Norris Lane Potable
WSW-4 101096 Rutherford Robert and Margaret
McCombs Potable
Cross Gradient
Unknown Unknown 330 SW Up Gradient
Up Gradient
Cross Gradient
1,465 SE Up Gradient
Unknown Unknown
Unknown
Up Gradient985 W
Up Gradient
775 SE
115 SW
650 SE Cross Gradient
1,165 SE Up Gradient
4966 NC Highway 64
Union Mills, NC 28167
5114 NC Highway 64
Union Mills, NC 28167
194 Stallings Road
Union Mills, NC 28167
593 Jack McKinney Road
Forest City, NC 28043
177 Ed Thompson Road
Rutherfordton, NC 28139
WSW-2 101259 4966 NC Highway 64
Union Mills, NC 28167
Unknown
Unknown Unknown 525 N
UnknownUnknown
161 Ed Thompson Road
Rutherfordton, NC 28139
910 S Up Gradient
1,150 N Up Gradient
1,465 NE Up Gradient
Rutherford Norris Lane 5114 NC Highway 64
Union Mills, NC 28167 Disconnected Unknown
WSW-3 1628159 156 Ed Thompson Road
Rutherfordton, NC 28139 Rutherford Jeffrey and Cynthia Ensley 290 Ed Thompson Road
Rutherfordton, NC 28139 Unknown Unknown
WSW-5 1013435 4940 NC Highway 64
Union Mills, NC 28167 Rutherford Claude Holland III 183 Gilboa Church Road
Rutherfordton, NC 28139
WSW-12 1632553 251 Ed Thompson Road
Rutherfordton, NC 28139 Rutherford Heather Sims 184 Coxe Road
Rutherfordton, NC 28139
160 Health Care Road
Rutherfordton, NC 28139Samantha YeltonRutherford5023 NC Highway 64
Union Mills, NC 281671604732WSW-6
WSW-11 1011039 224 Ed Thompson Road
Rutherfordton, NC 28139 Rutherford Jeffrey Ensley 290 Ed Thompson Road
Rutherfordton, NC 28139
Janette and Powell OwensRutherford1012921WSW-7
WSW-8 1628720 132 Ed Thompson Road
Rutherfordton, NC 28139 Rutherford Lori Jones 132 Ed Thompson Road
Rutherfordton, NC 28139 Potable Unknown
WSW-9 1629391 5016 NC Highway 64
Union Mills, NC 28167 Rutherford Ronnie Green 5016 NC Highway 64
Union Mills, NC 28167 Unknown Unknown
WSW-10 1012035 5114 NC Highway 64
Union Mills, NC 28167 Rutherford Norris Lane 5114 NC Highway 64
Union Mills, NC 28167 Unknown Unknown
Page 1 of 1

APPENDIX A
COPY OF O&M FORMS

APPENDIX B
HISTORICAL GROUNDWATER ELEVATIONS AND ANALTYICAL DATA
TABLE 2
Monitoring Well Construction and Groundwater Elevation Data
Cane Creek Grocery
Union Mills, North Carolina
Terracon Project No. 71179009A
NCDEQ Incident No. 28866
Well Id Date Intalled
Date Water Level
Measured
Bottom of Well
(ft. BGS)
Top of Casing
(TOC) Elevation (ft.) Depth to Product
Depth to Water
from TOC (ft.)
Free Product
Thickness (ft.)
Ground Water
Elevations*
9/15/2010 24.82 13.56 939.83
10/27/2010 24.82 13.28 940.11
7/18/2011 25.05 13.13 940.26
8/9/2011 25.05 13.39 940.00
4/16/2012 25.05 12.29 941.10
7/10/2012 25.05 13.10 940.29
8/1/2012 25.05 13.24 940.15
8/2/2012 25.05 13.25 940.14
8/6/2012 25.05 13.27 940.12
9/10/2012 25.05 13.32 940.07
2/12/2015 25.05 13.44 939.95
6/23/2015 25.05 11.69 941.70
9/10/2015 NM 12.54 940.85
1/8/2016 NM 13.22 940.17
6/22/2016 NM 11.06 942.33
12/1/2016 NM 12.47 940.92
8/28/2017 24.81 13.36 940.03
3/9/2018 NM 11.87 941.52
4/23/2019 NM NM NM
11/16/2021 NM NM NM
6/2/2022 NM NM NM
10/21/2010 17.64 10.19 938.11
10/27/2010 17.64 9.78 938.52
7/8/2011 17.64 9.62 938.68
7/18/2011 17.63 9.81 938.49
7/31/2012 17.63 9.97 938.33
9/10/2012 17.63 10.23 938.07
2/12/2015 17.63 8.47 939.83
6/23/2015 NM 9.45 938.85
9/10/2015 NM 10.06 938.24
1/8/2016 NM 7.92 940.38
6/22/2016 NM 9.30 939.00
8/28/2017 17.59 10.10 938.20
3/9/2018 NM 8.32 939.98
4/23/2019 NM NM NM
11/16/2021 NM NM NM
6/2/2022 NM NM NM
10/21/2010 14.88 7.60 936.11
10/27/2010 14.88 6.56 937.15
7/8/2011 14.88 7.21 8.47 1.26 936.26
7/18/2011 14.88 7.40 8.60 1.20 936.08
8/9/2011 14.88 7.45 8.70 1.25 936.02
10/18/2011 14.88 7.44 8.73 1.29 936.02
3/26/2012 14.88 6.95 8.74 1.79 936.42
7/11/2012 14.88 7.29 8.80 1.51 936.13
7/31/2012 14.88 7.39 8.75 1.36 936.06
9/10/2012 14.88 7.65 8.23 0.58 935.95
10/3/2013 NM 7.21 8.61 1.40 936.23
2/12/2015 NM 7.07 8.71 1.64 936.33
2/25/2015 NM 7.02 8.66 1.64 936.38
6/23/2015 NM 7.44 8.70 1.26 936.03
9/10/2015 NM 7.53 8.76 1.23 935.95
1/8/2016 NM 6.74 8.69 1.95 936.60
5/3/2016 NM 6.82 8.72 1.90 936.53
5/18/2016 NM 7.30 7.61 0.31 936.35
5/23/2016 NM 7.64 7.70 0.06 936.06
6/16/2016 NM 7.50 7.70 0.20 936.17
6/22/2016 NM 7.55 7.62 0.07 936.15
7/14/2016 NM 7.29 7.48 0.19 936.38
8/28/2017 NM 7.84 7.93 0.09 935.85
3/8/2018 NM 7.18 7.19 0.01 936.53
10/25/2018 NM ND 7.50 NA 936.21
4/23/2019 NM 7.01 7.02 0.01 936.70
943.7110/20/2010MW-3
MW-1
MW-2
9/15/2010
10/20/2010
NA
NA
953.39
948.30
NA
NA
ND NA
Page 2 of 13
TABLE 2
Monitoring Well Construction and Groundwater Elevation Data
Cane Creek Grocery
Union Mills, North Carolina
Terracon Project No. 71179009A
NCDEQ Incident No. 28866
Well Id Date Intalled
Date Water Level
Measured
Bottom of Well
(ft. BGS)
Top of Casing
(TOC) Elevation (ft.) Depth to Product
Depth to Water
from TOC (ft.)
Free Product
Thickness (ft.)
Ground Water
Elevations*
2/27/2020 15.10 6.81 936.90
4/15/2021 15.10 7.04 936.67
11/16/2021 15.00 7.40 936.31
6/2/2022 15.00 7.48 936.23
12/1/2022 15.09 7.35 936.36
10/21/2010 14.90 ND 7.74 NA 937.51
10/27/2010 14.90 7.07 7.11 0.04 938.17
7/8/2011 14.90 6.92 9.78 2.86 937.79
7/18/2011 14.90 7.02 9.64 2.62 937.73
8/9/2011 14.90 7.12 9.76 2.64 937.63
10/18/2011 14.90 7.06 10.01 2.95 937.63
3/26/2012 14.90 6.78 9.01 2.23 938.05
7/11/2012 14.90 7.26 8.36 1.10 937.78
7/31/2012 14.90 7.12 9.41 2.29 937.69
9/10/2012 14.90 7.30 9.40 2.10 937.55
10/3/2013 NM 6.47 9.80 3.33 938.15
2/12/2015 NM 6.25 9.10 2.85 938.46
2/25/2015 NM 6.88 7.25 0.37 938.30
6/23/2015 NM 7.00 8.14 1.14 938.03
9/10/2015 NM 6.96 9.63 2.67 937.78
1/8/2016 NM 5.97 8.97 3.00 938.71
5/3/2016 NM 6.55 8.10 1.55 938.41
5/18/2016 NM 6.98 7.46 0.48 938.18
5/23/2016 NM 8.35 8.64 0.29 936.84
6/16/2016 NM 7.24 7.53 0.29 937.95
6/22/2016 NM 7.34 7.45 0.11 937.89
7/14/2016 NM 7.04 7.31 0.27 938.16
8/28/2017 NM 7.49 8.27 0.78 937.61
3/9/2018 NM 6.92 7.10 0.18 938.30
10/25/2018 NM 7.32 7.35 0.03 937.92
4/23/2019 NM 6.85 6.88 0.03 938.39
2/27/2020 15.00 6.71 938.54
4/15/2021 15.00 6.81 938.44
11/16/2021 14.90 7.12 938.13
6/2/2022 14.90 7.14 938.11
12/1/2022 14.89 7.08 938.17
7/8/2011 24.00 13.40 13.79 0.39 939.35
7/18/2011 24.00 12.96 15.66 2.70 939.35
8/9/2011 24.00 13.16 15.88 2.72 939.14
10/18/2011 24.00 13.43 15.45 2.02 939.01
3/26/2012 24.00 12.62 14.58 1.96 939.83
7/10/2012 24.00 13.14 15.77 2.63 939.18
7/31/2012 24.00 13.00 15.85 2.85 939.28
8/1/2012 24.00 13.00 15.88 2.88 939.27
8/2/2012 24.00 13.02 15.89 2.87 939.25
8/6/2012 24.00 13.04 15.92 2.88 939.23
9/10/2012 24.00 13.69 15.18 1.49 938.85
10/3/2013 NM 12.22 15.16 2.94 940.04
2/12/2015 NM 12.30 13.65 1.35 940.26
2/25/2015 NM 12.80 13.07 0.27 939.97
6/23/2015 NM 12.58 15.53 2.95 939.68
9/10/2015 NM 13.27 15.45 2.18 939.14
1/8/2016 NM 12.01 NM
6/22/2016 NM 13.12 NM
8/28/2017 NM 13.80 13.89 0.09 939.00
3/9/2018 NM 12.54 940.28
10/25/2018 NM 13.08 939.74
4/23/2019 NM 12.27 940.55
2/27/2020 23.38 11.94 940.88
4/15/2021 23.38 12.09 940.73
11/16/2021 23.41 12.81 940.01
6/2/2022 23.41 12.73 940.09
12/1/2022 23.57 12.88 939.94
10/20/2010MW-3
(cont.)
ND NA
ND NA
MW-4 10/20/2010 945.25
943.71
NA
MW-5 7/7/2011
ND NA
952.82
ND
Page 3 of 13
TABLE 2
Monitoring Well Construction and Groundwater Elevation Data
Cane Creek Grocery
Union Mills, North Carolina
Terracon Project No. 71179009A
NCDEQ Incident No. 28866
Well Id Date Intalled
Date Water Level
Measured
Bottom of Well
(ft. BGS)
Top of Casing
(TOC) Elevation (ft.) Depth to Product
Depth to Water
from TOC (ft.)
Free Product
Thickness (ft.)
Ground Water
Elevations*
7/8/2011 23.10 11.34 939.67
7/18/2011 23.10 12.37 938.64
8/9/2011 23.10 12.50 938.51
4/16/2012 23.10 12.02 938.99
7/31/2012 23.10 12.43 938.58
9/10/2012 23.10 12.54 938.47
2/12/2015 23.10 11.70 939.31
6/23/2015 NM 12.25 938.76
9/10/2015 NM 12.43 938.58
1/8/2016 NM 11.13 939.88
6/22/2016 NM 12.20 938.81
8/28/2017 23.16 12.68 938.33
3/9/2018 NM 10.72 940.29
10/25/2018 NM 11.98 939.03
4/23/2019 NM 10.38 940.63
2/27/2020 23.18 9.85 941.16
4/15/2021 23.18 11.03 939.98
11/16/2021 23.15 11.36 939.65
6/2/2022 23.15 10.84 940.17
12/1/2022 23.03 9.28 941.73
7/8/2011 24.94 13.22 940.52
7/18/2011 24.94 13.35 940.39
7/31/2012 24.94 13.34 940.40
8/1/2012 24.94 13.41 940.33
8/2/2012 24.94 13.42 940.32
8/6/2012 24.94 13.43 940.31
9/10/2012 24.94 13.65 940.09
2/12/2015 24.94 11.78 941.96
6/23/2015 NM 12.66 941.08
9/10/2015 NM 13.40 940.34
1/8/2016 NM 11.06 942.68
6/22/2016 NM 12.58 941.16
8/28/2017 24.84 13.49 940.25
3/9/2018 NM 11.94 941.80
4/23/2019 NM NM NM
11/16/2021 NM NM NM
6/2/2022 NM NM NM
7/18/2011 14.93 7.60 936.36
8/9/2011 14.93 7.73 936.23
4/16/2012 14.93 7.25 936.71
7/31/2012 14.93 7.67 936.29
9/10/2012 14.93 7.80 936.16
2/12/2015 14.93 6.28 9.35 3.07 937.10
2/25/2015 14.93 6.59 8.33 1.74 937.04
6/23/2015 NM 7.31 8.31 1.00 936.46
9/10/2015 NM 7.35 8.58 1.23 936.38
1/8/2016 NM 6.58 7.32 0.74 937.24
5/3/2016 NM 7.25 7.81 0.56 936.60
5/18/2016 NM 7.06 7.76 0.70 936.77
5/23/2016 NM 7.06 7.99 0.93 936.72
6/16/2016 NM 7.01 8.14 1.13 936.74
6/22/2016 NM 7.11 8.18 1.07 936.65
7/14/2016 NM 6.95 7.93 0.98 936.82
9/21/2016 NM 7.49 8.74 1.25 936.23
9/26/2016 NM 7.40 8.41 1.01 936.37
10/6/2016 NM 7.26 8.38 1.12 936.49
11/21/2016 NM 7.21 8.19 0.98 936.56
12/1/2016 NM 7.15 8.00 0.85 936.65
8/28/2017 NM 7.00 7.36 0.36 936.89
3/9/2018 NM ND 6.85 NA 937.11
10/25/2018 NM 7.25 7.74 0.49 936.62
4/23/2019 NM 6.82 937.14
2/27/2020 15.00 6.61 937.35
4/15/2021 15.00 6.79 937.17
MW-6 7/8/2011 951.01 NA NA
MW-7 7/7/2011 NA
ND
MW-8 7/8/2011 943.96
ND
NA
953.74 NA
NA
Page 4 of 13
TABLE 2
Monitoring Well Construction and Groundwater Elevation Data
Cane Creek Grocery
Union Mills, North Carolina
Terracon Project No. 71179009A
NCDEQ Incident No. 28866
Well Id Date Intalled
Date Water Level
Measured
Bottom of Well
(ft. BGS)
Top of Casing
(TOC) Elevation (ft.) Depth to Product
Depth to Water
from TOC (ft.)
Free Product
Thickness (ft.)
Ground Water
Elevations*
11/16/2021 14.80 7.15 936.81
6/2/2022 14.80 7.18 936.78
12/1/2022 NM
7/11/2012 22.97 13.41 939.39
7/31/2012 22.97 13.51 939.29
8/1/2012 22.97 13.52 939.28
8/2/2012 22.97 13.53 939.27
8/6/2012 22.97 13.55 939.25
9/10/2012 22.97 13.86 938.94
2/12/2015 22.97 12.40 940.40
6/23/2015 NM 13.34 939.46
9/10/2015 NM 13.55 939.25
1/8/2016 NM 11.76 941.04
6/22/2016 NM 12.90 939.90
8/28/2017 23.00 13.78 939.02
3/9/2018 NM 12.33 940.47
10/25/2018 NM 12.96 939.84
4/23/2019 NM 12.04 940.76
2/27/2020 23.03 11.73 941.07
4/15/2021 23.03 11.86 940.94
11/16/2021 23.00 12.62 940.18
6/2/2022 23.00 12.42 940.38
12/1/2022 22.49 12.70 940.10
All well casings have a 2" internal diameter
Top of casing of monitoring wells surveyed by other consultants
Screen intervals of wells unknown
*Where free product detected, groundwater elevation calculated to account for displacement of water by free product by the equation:
Groundwater Elevation = depth to water - [depth to water - (free product thickness * 0.81)]
where 0.81 is the assumed specific gravity of free product
943.967/8/2011MW-8
(cont.)
ND
Stream 4
7/11/2012
Stream 3
NA
Stream 1 7/11/2012NA
Stream 2
NA
NA
NA
7/11/2012NA
7/11/2012
NA
NA
936.87NA
935.93NA
NA NA
936.87 NA
NA NA
NA
NA
935.14NANA NA
935.93
935.14 NA
NA
Not Located
952.8 NANAMW-9 7/11/2012
NA
Page 5 of 13
TABLE 3Recent Analytical ResultsCane Creek GroceryUnion Mills, North CarolinaTerracon Project No. 71179009ANCDEQ Incident No. 28866Well/SampleI.D.Date Collected (mm/dd/yy)Benzenen-ButylbenzeneDiisoporopyl Ether (DIPE)EthylbenzeneIsopropylbenzeneNaphthalenen-PropylbenzeneToluene1,2,4-Trimethylbenzene1,3,5-Trimethylbenzene Xylenes (Total)17070 600 70 6 70 600400 400 5001.193.920,00068250 12 8011390 1306705,0006,90070,00084,50025,0006,00030,000260,00028,50025,50085,500MW-3 12/1/202282.8<0.98<0.62 84.7 9.339.318.6 45.4 177 <0.66 248.6MW-4 12/1/202245.3<0.490.32J 41.6 2.817.55.9 189117 52.1 225.1MW-5 12/1/202221.231<7.7 390 25.8105 85.1 2,4906061621,985MW-6 12/1/2022<0.34<0.49<0.31 <0.30 <0.33 <0.64 <0.34 <0.24 <0.50 <0.33 <1.05MW-9 12/1/2022<0.34<0.49<0.31 3.9 1.2 1.3J 5.0 <0.24 26.7 9.8 10.6SW-1 12/1/2022<0.34<0.49<0.31 <0.30 <0.33 <0.64 <0.34 <0.24 <0.5 <0.33 <1.05SW-2 12/1/2022<0.34<0.49<0.31 <0.30 <0.33 <0.64 <0.34 <0.24 <0.50 <0.33 <1.05SW-3 12/1/20221.1<0.49<0.31 1.1 <0.33 <0.64 <0.34 5.0 0.78 <0.33 4.33SW-4 12/1/20222.0<0.49<0.31 3.3 <0.33 <0.64 <0.34 6.5 2.5 <0.33 9.9WSW-1 12/1/2022<0.34 <0.49<0.31<0.30 <0.33 <0.64 <0.34 <0.24 <0.50 <0.33 <1.05All results reported in μg/L. <- denotes less than method detection limitNE denotes standard not established.NA denotes constituent not analyzed or data not available.Bold denotes levels above the 2L/2B standards in groundwater and surface water respectively .Underline denotes groundwater levels over 10 x 2B standards.Yellow shading indicates levels above GCL standard.2L Standard (ug/L)2B* Standard (ug/L)GCL (ug/L)* The tributary of Cane Creek located on site is classified as Class B/C surface water. The Standards shown are the most protective of the Class B and Class C 2B standards for each constituent, if established.Page 6 of 13
TABLE 4Historical Groundwater Analytical ResultsCane Creek GroceryUnion Mills, North CarolinaTerracon Project No. 71179009ANCDEQ Incident No. 28866Well/SampleI.D.Date Collected (mm/dd/yy)Benzenen-Butylbenzenesec-ButylbenzeneChloroformChloromethaneDiisopropyl etherEthylbenzeneIsopropylbenzeneMethyl tert-butyl etherMethylene Chloride **Naphthalenen-PropylbenzeneStyreneToluene1,2,4-Trimethylbenzene1,3,5-TrimethylbenzeneXylenes (Total)17070 70370 600 70 20 5 6 70 70 600400 400 50011.939NE NE NE200,0006802,50019011,000120800NE 1103,9001,3006,7005,0006,9008,500 70,0003,00070,000 84,50025,00020,0005,000 6,00030,00070,000 260,00028,50025,50085,5009/15/201037.9NDND ND ND ND 14.6 ND 1.3 ND28.22.5 ND 10921 13 77.97/18/201137.6NDND ND ND ND 1.8 ND 0.74 ND ND ND ND 47.61.4 0.8 20.17/31/201272.5NDND ND ND ND 3.9 ND 2.2 ND ND ND ND 99.96356.12/12/20154.7NDND ND ND ND 0.6 ND ND ND ND ND ND 11.90.68ND6.66/23/20150.59NDND ND ND ND ND ND ND ND ND ND ND 0.77 ND ND0.669/10/2015NDNDND ND ND ND ND ND ND ND ND ND ND ND ND ND ND1/8/2016NDNDND ND ND ND ND ND ND ND ND ND ND ND ND ND ND6/22/2016NDNDND ND ND ND ND ND ND ND ND ND ND ND ND ND ND12/1/2016NDNDND ND ND ND ND ND ND ND ND ND ND ND ND ND ND8/28/2017<0.25ND<0.25 <0.25 <0.50 <0.25 <0.25 <0.25 <0.25 ND <1.0 <0.25 <0.25 <0.25 <0.25 <0.25 <0.503/9/2018<0.25ND<0.25 <0.25 <0.50 <0.25 <0.25 <0.25 <0.25 ND <1.0 <0.25 <0.25 <0.25 <0.25 <0.25 <0.504/23/201911/16/20216/2/202210/21/2010NDNDND ND ND ND ND ND ND ND ND ND ND ND ND ND ND7/18/2011NDNDND ND ND ND ND ND ND ND ND ND ND ND ND ND ND7/31/2012NDNDND ND ND ND ND ND ND ND ND ND ND ND ND ND ND2/12/2015NDNDND ND ND ND ND ND ND ND ND ND ND ND ND ND ND6/23/2015NDNDND ND ND ND ND ND ND ND ND ND ND ND ND ND ND9/10/2015NDNDND ND ND ND ND ND ND ND ND ND ND ND ND ND ND1/8/2016NDNDND ND ND ND ND ND ND ND ND ND ND ND ND ND ND6/22/2016NDNDND ND ND ND ND ND ND ND ND ND ND ND ND ND ND12/1/2016NDNDND ND ND ND ND ND ND ND ND ND ND ND ND ND ND8/28/2017<0.25ND<0.25 <0.25 <0.50 <0.25 <0.25 <0.25 <0.25 ND <1.0 <0.25 <0.25 <0.25 <0.25 <0.25 <0.503/9/2018<0.25ND<0.25 <0.25 <0.50 <0.25 <0.25 <0.25 <0.25 ND <1.0 <0.25 <0.25 <0.25 <0.25 <0.25 <0.504/23/201911/16/20216/2/2022Not SampledContaminant of Concern2L Standard (ug/L)10x2B Standard (ug/L)GCL (ug/L)Not SampledNot SampledNot SampledMW-1MW-2Not SampledNot SampledPage 7 of 13
TABLE 4Historical Groundwater Analytical ResultsCane Creek GroceryUnion Mills, North CarolinaTerracon Project No. 71179009ANCDEQ Incident No. 28866Well/SampleI.D.Date Collected (mm/dd/yy)Benzenen-Butylbenzenesec-ButylbenzeneChloroformChloromethaneDiisopropyl etherEthylbenzeneIsopropylbenzeneMethyl tert-butyl etherMethylene Chloride **Naphthalenen-PropylbenzeneStyreneToluene1,2,4-Trimethylbenzene1,3,5-TrimethylbenzeneXylenes (Total)17070 70370 600 70 20 5 6 70 70 600400 400 50011.939NE NE NE200,0006802,50019011,000120800NE 1103,9001,3006,7005,0006,9008,500 70,0003,00070,000 84,50025,00020,0005,000 6,00030,00070,000 260,00028,50025,50085,500Contaminant of Concern2L Standard (ug/L)10x2B Standard (ug/L)GCL (ug/L)10/21/20107/18/20117/31/20122/12/20159/10/20151/8/20166/22/201612/1/20168/28/20173/9/201810/25/2018902ND<2.5 <2.5 <5.0 42.3 364 21.8 3.1J ND97.457.3 <2.51,17051870.99254/23/2019445ND<1.2 2.7 <2.5 17.6 131 15.6 <1.2 ND47.1<1.2 <1.2 522337 56.1 481.32/27/202049817.6<0.98 <1.4 <1.7 10.7 95.6 21.8 <1.8 ND84.629.4 <1.0 34544854.8 421.84/15/20212826.1<1.0 <0.88 <1.4 3.7 36.1 6.9 <1.1 ND20.9<0.85 <0.73 230113 15.9 123.611/16/20213577.0<1.0 <0.88 <1.4 <0.77 157 11.6 <1.1 ND64.826 <0.73 195292 13.7504.66/2/202250621.1<4.0 <4.3 <5.4 <3.1 248 17.1 <4.243.893.943.9 <2.91,07041212.8838.612/1/202282.8<0.98<0.80 <0.86 <1.1 <0.62 84.7 9.3 <0.84 <3.939.318.6 <0.58 45 177 <0.66 248.610/21/20107/18/20117/31/20122/12/20159/10/20151/8/20166/22/201612/1/20168/28/20173/9/201810/25/20184/23/20192/27/2020568<7.1<4.9 <7.1 <8.3 11.1 285 33.1 <8.9 ND23191.6<5.12,1401,0902361,9314/15/2021344<4.9<4.0 <3.5 <5.4 <3.1 186 16.8 <4.2 ND57.7<3.4 <2.81,280347 <3.31,05011/16/2021154<0.98<0.80 <0.71 <1.1 <0.62 72.7 6.5 <0.84 ND2911.7 <0.58 289178 49.1 3726/2/20222959.7<2.0 <2.2 <2.7 3.2 131 7.5 <2.120.239.414.2 <1.5722175 51.351312/1/202245.3<0.49<0.40 <0.43 <0.54 0.32J 41.6 2.8 <0.42 <2.017.55.9 <0.29 189117 52.1 225.1MW-3MW-4Not Sampled - Free Product DetectedNot Sampled - Free Product DetectedNot Sampled - Free Product DetectedNot Sampled - Free Product DetectedNot Sampled - Free Product DetectedNot Sampled - Free Product DetectedNot Sampled - Free Product DetectedNot Sampled - Free Product DetectedNot Sampled - Free Product DetectedNot Sampled - Free Product DetectedNot Sampled - Free Product DetectedNot Sampled - Free Product DetectedNot Sampled - Free Product DetectedNot Sampled - Free Product DetectedNot Sampled - Free Product DetectedNot Sampled - Free Product DetectedNot Sampled - Free Product DetectedNot Sampled - Free Product DetectedNot Sampled - Free Product DetectedNot Sampled - Free Product DetectedNot Sampled - Free Product DetectedNot Sampled - Free Product DetectedPage 8 of 13
TABLE 4Historical Groundwater Analytical ResultsCane Creek GroceryUnion Mills, North CarolinaTerracon Project No. 71179009ANCDEQ Incident No. 28866Well/SampleI.D.Date Collected (mm/dd/yy)Benzenen-Butylbenzenesec-ButylbenzeneChloroformChloromethaneDiisopropyl etherEthylbenzeneIsopropylbenzeneMethyl tert-butyl etherMethylene Chloride **Naphthalenen-PropylbenzeneStyreneToluene1,2,4-Trimethylbenzene1,3,5-TrimethylbenzeneXylenes (Total)17070 70370 600 70 20 5 6 70 70 600400 400 50011.939NE NE NE200,0006802,50019011,000120800NE 1103,9001,3006,7005,0006,9008,500 70,0003,00070,000 84,50025,00020,0005,000 6,00030,00070,000 260,00028,50025,50085,500Contaminant of Concern2L Standard (ug/L)10x2B Standard (ug/L)GCL (ug/L)7/18/20117/31/20122/12/20159/10/20151/8/20161,910NDND NDND31.53,48021756.4ND933539ND19,0004,340 980 18,6006/22/20167,860NDND NDND1102,500131184ND443334ND24,1002,490 566 13,48012/1/20168/28/20173/9/2018409ND<3.1 <3.1<6.2<3.1 430 56.4 <3.1 ND167<3.1 <3.11,7301,190<3.12,92210/25/2018575ND<12.5 <12.5<25.0<12.51,410117<12.5 ND304<12.5 <12.55,8602,230<12.57,7604/23/2019580ND<10.0 22.5<20.0<10.0 525 35.4 <10.0 ND120<10.0 <10.04,0408812283,0262/27/2020710<14.1<9.8 <14.1<16.6<13.471131.1 <17.8 ND14394<10.25,6207311483,8204/15/2021303<19.6<16.0 <14.1<21.6<12.3 492 25.4 <16.9 ND166<13.6 <11.74,880607<13.32,73511/16/202172.7<6.1<5.0 <4.4<6.8<3.8 190 9 <5.3 ND47.921 <3.62,190259 57.81,1846/2/202225.68.4<4.0 <4.3<5.4<3.1 145 6.7 <4.221.230.420.0 <2.91,320175 41.178912/1/202221.231<10.0 <10.8<13.5<7.7 390 25.8 <10.6 <48.8105 85.1<7.32,4906061621,9857/18/2011NDNDND ND ND ND ND ND ND ND ND ND ND ND ND ND7/31/2012NDNDND ND ND ND ND ND ND ND ND ND ND ND ND ND ND2/12/201520.6NDND ND ND ND ND ND ND ND ND ND ND ND ND ND ND6/23/20150.65NDND ND ND ND ND ND ND ND ND ND ND ND ND ND ND9/10/2015NDNDND ND ND ND ND ND ND ND ND ND ND ND ND ND ND1/8/2016NDNDND ND ND ND ND ND ND ND ND ND ND ND ND ND ND6/22/2016NDNDND ND ND ND ND ND ND ND ND ND ND ND ND ND ND12/1/2016NDNDND ND ND ND ND ND ND ND ND ND ND ND ND ND ND8/28/2017<0.25ND<0.25 <0.25 <0.50 <0.25 <0.25 <0.25 <0.25 ND <1.0 <0.25 <0.25 <0.25 <0.25 <0.25 <0.503/9/2018<0.25ND<0.25 <0.25 <0.50 <0.25 <0.25 <0.25 <0.25 ND <1.0 <0.25 <0.25 <0.25 <0.25 <0.25 <0.5010/25/2018<0.25ND<0.25 <0.25 <0.50 <0.25 <0.25 <0.25 <0.25 ND <1.0 <0.25 <0.25 <0.25 <0.25 <0.25 <0.504/23/2019<0.25ND<0.25 <0.25 <0.50 <0.25 <0.25 <0.25 <0.25 ND <1.0 <0.25 <0.25 <0.25 <0.25 <0.25 <0.502/27/2020<0.24<0.35<0.25 <0.35 <0.42 <0.33 <0.24 <0.24 <0.44 ND <0.66 <0.24 <0.26 <0.23 <0.19 <0.23 <0.244/15/2021<0.34<0.49<0.40 <0.35 <0.54 <0.31 <0.30 <0.33 <0.42 ND <0.64 <0.34 <0.29 <0.48 <0.50 <0.33 <0.3411/16/2021<0.34<0.49<0.40 <0.35 <0.54 <0.31 <0.30 <0.33 <0.42 ND <0.64 <0.34 <0.29 <0.48 <0.50 <0.33 <1.056/2/2022<0.34<0.49<0.40 <0.43 <0.54 <0.31 <0.30 <0.33 <0.42 <2.0 <0.64 <0.34 <0.29 <0.48 <0.50 <0.33 <0.3412/1/2022<0.34<0.49<0.40 <0.43 <0.54 <0.31 <0.30 <0.33 <0.42 <2.0 <0.64 <0.34 <0.29 <0.24 <0.50 <0.33 <1.05MW-5MW-6Not Sampled - Free Product DetectedNot Sampled - Free Product DetectedNot Sampled - Free Product DetectedNot Sampled - Free Product DetectedNot Sampled - Free Product DetectedNot Sampled - Free Product DetectedPage 9 of 13
TABLE 4Historical Groundwater Analytical ResultsCane Creek GroceryUnion Mills, North CarolinaTerracon Project No. 71179009ANCDEQ Incident No. 28866Well/SampleI.D.Date Collected (mm/dd/yy)Benzenen-Butylbenzenesec-ButylbenzeneChloroformChloromethaneDiisopropyl etherEthylbenzeneIsopropylbenzeneMethyl tert-butyl etherMethylene Chloride **Naphthalenen-PropylbenzeneStyreneToluene1,2,4-Trimethylbenzene1,3,5-TrimethylbenzeneXylenes (Total)17070 70370 600 70 20 5 6 70 70 600400 400 50011.939NE NE NE200,0006802,50019011,000120800NE 1103,9001,3006,7005,0006,9008,500 70,0003,00070,000 84,50025,00020,0005,000 6,00030,00070,000 260,00028,50025,50085,500Contaminant of Concern2L Standard (ug/L)10x2B Standard (ug/L)GCL (ug/L)7/18/201119NDND ND ND ND 4.4 ND 0.7 ND ND 0.63 ND 53.91.5 0.94 20.47/31/20127.9NDND ND ND ND 1.3 ND ND ND ND ND ND 21.80.90.539.72/12/201510.8NDND ND ND ND 1.1 ND ND ND ND ND ND 19.80.63ND10.76/23/2015NDNDND ND ND ND ND ND ND ND ND ND ND 1.2 ND ND1.849/10/2015NDNDND ND ND ND ND ND ND ND ND ND ND ND ND ND ND1/8/2016NDNDND ND ND ND ND ND ND ND ND ND ND ND ND ND ND6/22/2016NDNDND ND ND ND ND ND ND ND ND ND ND ND ND ND ND12/1/2016NDNDND ND ND ND ND ND ND ND ND ND ND ND ND ND ND8/28/2017<0.25ND<0.25 <0.25 <0.50 <0.25 <0.25 <0.25 <0.25 ND <1.0 <0.25 <0.25 <0.25 <0.25 <0.25 <0.503/9/2018<0.25ND<0.25 <0.25 <0.50 <0.25 <0.25 <0.25 <0.25 ND <1.0 <0.25 <0.25 <0.25 <0.25 <0.25 <0.504/23/201911/16/20216/2/20227/18/2011NDNDND ND ND ND ND ND ND ND ND ND ND ND ND ND ND7/31/2012NDNDND ND ND ND ND ND ND ND ND ND ND ND ND ND ND2/12/20156/23/20159/10/20151/8/20166/22/201612/1/20168/28/20173/9/20183/9/20184/23/201973.5ND<3.1 6.4 <6.2 <3.181945.7 <3.1 ND147<3.1 <3.13,2801,160<3.14,6902/27/202057.2<4.4<3.1 <4.4 <5.2 <4.278549.2 <5.6 ND179167<3.22,1401,3403364,4604/15/202132.4<4.9<4.0 <3.5 <5.4 <3.1 551 31.4 <4.2 ND165<3.4 <2.91,310922<3.33,36011/16/202126.1<2.4<2.0 <1.8 <2.7 <1.5 171 10.5 <2.1 ND57.423.3 <1.5 495335 74.21,2456/2/202221.743.2<2.0 <2.2 <2.7 <1.5 345 23.1 <2.1 <9.813081.8<1.56707421791,92612/1/2022MW-8Not Sampled - Not LocatedNot Sampled - Free Product DetectedNot Sampled - Free Product DetectedNot Sampled - Free Product DetectedNot Sampled Not Sampled - Free Product DetectedNot Sampled - Free Product DetectedNot Sampled - Free Product DetectedNot SampledNot SampledNot Sampled - Free Product DetectedNot Sampled - Free Product DetectedNot SampledMW-7Page 10 of 13
TABLE 4Historical Groundwater Analytical ResultsCane Creek GroceryUnion Mills, North CarolinaTerracon Project No. 71179009ANCDEQ Incident No. 28866Well/SampleI.D.Date Collected (mm/dd/yy)Benzenen-Butylbenzenesec-ButylbenzeneChloroformChloromethaneDiisopropyl etherEthylbenzeneIsopropylbenzeneMethyl tert-butyl etherMethylene Chloride **Naphthalenen-PropylbenzeneStyreneToluene1,2,4-Trimethylbenzene1,3,5-TrimethylbenzeneXylenes (Total)17070 70370 600 70 20 5 6 70 70 600400 400 50011.939NE NE NE200,0006802,50019011,000120800NE 1103,9001,3006,7005,0006,9008,500 70,0003,00070,000 84,50025,00020,0005,000 6,00030,00070,000 260,00028,50025,50085,500Contaminant of Concern2L Standard (ug/L)10x2B Standard (ug/L)GCL (ug/L)7/31/201266.3NDND ND ND ND 7.7 ND 1.3 ND ND 0.55 ND 96.84.1 1.8 382/12/2015135NDND ND ND 2.5 ND 11.4 ND ND5431.9 0.97942287 80.69506/26/20159/10/201528.3NDND ND ND ND 226 18 ND ND88.358 ND7465591341.5221/8/2016NDNDND ND ND ND 135 14.7 ND ND76.145.6 ND 1104391249566/22/2016NDNDND ND ND ND 216 57.3 ND ND147149ND 30.51,770 450 1,73112/1/2016NDND0.54 ND ND ND 4.2 1 ND ND8.33.8 ND 9.455.6 16.6 76.48/28/2017<0.25ND0.30J <0.25 <0.50 <0.25 1.3 0.38J <0.25 ND 1.2J 1.5 <0.25 1.716.6 6.2 133/9/2018<0.25ND<0.25 <0.25 <0.50 <0.25 1.3 3.1 <0.25 ND 1.3J <0.25 <0.25 <0.25 111 42.6 1110/25/2018<0.25ND<0.25 <0.25 <0.50 <0.25 0.68 1.2 <0.25 ND <1.0 <0.25 <0.25 <0.25 42.7 17.1 5.74/23/2019<0.25ND<0.25 <0.25 <0.50 <0.25 0.62 <0.25 <0.25 ND <1.0 1.9 <0.25 <0.25 12.2 4.9 2.352/27/2020<0.24<0.350.49J <0.35 <0.42 <0.33 0.34J 0.44J <0.44 ND <0.66 2.2 <0.26 <0.23 14 6.6 1.36J4/15/2021<0.34<0.49<0.40 <0.35 <0.54 <0.31 <0.30 <0.33 <0.42 ND <0.64 <0.34 <0.29 <0.48 5.9 3.1 <0.3411/16/2021<0.34<0.49<0.40 <0.35 <0.54 <0.31 1.7 0.51 <0.42 ND 0.84J 2.8 <0.29 <0.48 16.6 7.2 5.86/2/2022<0.3413.2<0.40 <0.43 <0.54 <0.31 14.7 3.8 <0.42 <2.07.917.7 <0.29 0.50 105 33.8 4912/1/2022<0.34<0.49<0.40 <0.43 <0.54 <0.31 3.9 1.2 <0.42 <2.0 1.3J 5 <0.29 <0.24 26.7 9.8 10.67/18/2011NDNDND ND ND ND ND ND ND ND ND ND ND ND ND ND ND7/31/2012NDNDND ND ND ND ND ND ND ND ND ND ND ND ND ND ND2/12/2015NDNDND ND ND ND ND ND ND ND ND ND ND ND ND ND ND6/23/2015NDNDND ND ND ND ND ND ND ND ND ND ND ND ND ND ND9/10/2015NDNDND ND ND ND ND ND ND ND ND ND ND ND ND ND ND1/8/2016NDNDND ND ND ND ND ND ND ND ND ND ND ND ND ND ND12/1/2016NDNDND ND ND ND ND ND ND ND ND ND ND ND ND ND ND8/28/2017<0.25ND<0.25 <0.254<0.25 <0.25 <0.25 <0.25 ND <1.0 <0.25 <0.25 <0.25 <0.25 <0.25 <0.503/9/2018<0.25ND<0.25 <0.25 <0.50 <0.25 <0.25 <0.25 <0.25 ND <1.0 <0.25 <0.25 <0.25 <0.25 <0.25 <0.504/23/20192/27/2020<0.24<0.35<0.25 <0.35 <0.42 <0.33 <0.24 <0.24 <0.44 ND <0.66 <0.24 <0.26 <0.23 <0.19 <0.23 <0.2411/16/2021<0.34<0.49<0.40 <0.35 <0.54 <0.31 <0.30 <0.33 <0.42 ND <0.64 <0.34 <0.29 <0.48 <0.50 <0.33 <1.056/2/2022<0.34 <0.49 <0.40 <0.43 <0.54 <0.31 <0.30 <0.33 <0.42 <2.0 <0.64 <0.34 <0.29 <0.48 <0.50 <0.33 <0.3412/1/2022<0.34 <0.49 <0.40 <0.43 <0.54 <0.31 <0.30 <0.33 <0.42 <2.0 <0.64 <0.34 <0.29 <0.24 <0.50 <0.33 <1.05All results reported in μg/L. NA denotes constituent not analyzed or data not available.<- denotes less than method detection limitBold denotes levels above the 2L standards in groundwater.NE denotes standard not established.Underline denotes groundwater levels over 10 x 2B standards.Yellow shading indicates levels above GCL standard.* The tributary of Cane Creek located on site is classified as Class B/C surface water. The Standards shown above are the most protective of the Class B and Class C 2B standards for each constituent, if established.** Methylene Chloride is a common lab contaminant WSW-1MW-9Not SampledNot Sampled - Free Product DetectedPage 11 of 13