MO-4059_12032_CA_MRP_20231101

Arcadis U.S., Inc.
111-D Sanders Lane
Bluefield, VA 24605
Tel [phone]
Fax [phone]
www.arcadis.com
Mr. Daniel Bowser
NCDEQ – UST Section
Mooresville Regional Office
610 East Center Avenue, Suite 301
Mooresville, North Carolina 28115

Subject:
Annual Groundwater Monitoring Report – 2023
Former BP Facility #24177
4825 South Tryon Street
Charlotte, North Carolina 28217
Incident Number: 12032
Risk Classification: Intermediate

Dear Mr. Bowser:

On behalf of Atlantic Richfield Company (ARCO), a BP Products North America,
Inc. (BP) affiliated company, Arcadis G&M of North Carolina is submitting the
attached Annual Groundwater Monitoring Report – 2023 dated October 25, 2023
for the above referenced site. An electronic copy of this report including the
associated laboratory analytical report is included with the attached CD.
Please contact me at [phone] with any questions or concerns related to
the Report or this incident number.
Sincerely,
Arcadis G&M of North Carolina, Inc.

Hardik Patel
AFS Project Manager

Copies:
File – BP #24177
ENVIRONMENT

Date:
October 25, 2023

Contact:
Hardik Patel

Phone:
919.328.5605

Email:
[e-mail]

Our ref:
30143398
(GP16BPNA.NC11)

Atlantic Richfield Company
c/o BP Products North America, Inc.

ANNUAL GROUNDWATER
MONITORING REPORT – 2023

Former BP Facility #24177
4825 South Tryon Street
Charlotte, Mecklenburg County, North Carolina

NCDEQ Incident #12032
October 2023
Annual Groundwater Monitoring Report – 2023
arcadis.com i
ANNUAL
GROUNDWATER
MONITORING REPORT
– 2023
Prepared for:
Atlantic Richfield Company
c/o BP Products North America, Inc.
Mr. Jim Smith – Project Manager
201 Helios Way
Helios Plaza – 6th Floor
Houston, TX 77079
Tel [phone]
Prepared by:
Arcadis G&M of North Carolina, Inc.
5420 Wade Park Blvd.
Suite 350
Raleigh, North Carolina 27607
Tel [phone]
Fax [phone]
www.arcadis-us.com
Environmental
Our Ref.:
30143398
Date:
October 25, 2023
This document is intended only for the use of
the individual or entity for which it was
prepared and may contain information that is
privileged, confidential and exempt from
disclosure under applicable law. Any
dissemination, distribution or copying of this
document is strictly prohibited.
Hardik Patel
Certified Project Manager
C.Scott Bostian, P.E.
North Carolina P.E. No. 25659
Senior Engineer
Annual Groundwater Monitoring Report – 2023
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CONTENTS

1.0 Site History and Characterization ........................................................................................................... 1
2.0 Free Product ........................................................................................................................................... 2
3.0 Groundwater Monitoring .......................................................................................................................... 3
3.1 Groundwater Gauging ....................................................................................................................... 3
3.2 Groundwater Sampling ..................................................................................................................... 3
3.3 Groundwater Analytical Results ........................................................................................................ 4
4.0 Site Remediation ..................................................................................................................................... 5
4.1 Remediation Activities to Date .......................................................................................................... 5
5.0 Conclusions and Recommendations ....................................................................................................... 6

TABLES
Table 1. Monitoring Well Construction Details
Table 2. Groundwater Elevation Data

FIGURES
Figure 1. Site Location Map
Figure 2. Site Map
Figure 3. Potentiometric Surface Map - August 9, 2023
Figure 4. Groundwater Analytical Data - October 2019 - August 2023
Figure 5. Benzene Isoconcentration Map - August 9, 2023

APPENDICES
A- Historical Groundwater Elevation Data
B- Laboratory Analytical Report and Chain-of-Custody Record – August 22, 2023
C- Historical Groundwater Analytical Data
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EXECUTIVE SUMMARY
On behalf of Atlantic Richfield Company (ARCO), a BP Products North America, Inc. (BP)
affiliated company, Arcadis G&M of North Carolina, Inc. (Arcadis) personnel performed
annual groundwater monitoring and sampling at Former BP Facility #24177 located at
4825 South Tryon Street, Charlotte, Mecklenburg County, North Carolina (the Site). The
objective of the groundwater monitoring and sampling program is to confirm stable or
decreasing concentrations of dissolved-phase chemicals of concern (COCs) and to
maintain compliance with the North Carolina Department of Environmental Quality
(NCDEQ) Underground Storage Tank (UST) Program requirements for the site.
On August 9, 2023, Arcadis personnel completed an annual groundwater monitoring and
sampling event at the Site. Twelve (12) groundwater monitoring wells (MW-1R, MW-2,
MW-3, MW-5, MW-7, MW-8, MW-10R, MW-11, MW-12, MW-13, MW-14, and MW-16D)
were gauged. Groundwater monitoring wells MW-6 and MW-15 were not accessible and
could not be gauged. DTW on August 9, 2023, ranged from 20.37 feet below top of
casing (btoc) in groundwater monitoring well MW-12 to 27.23 feet btoc in groundwater
monitoring well MW-1R. Free product was not observed at the Site on August 9, 2023.
On August 9, 2023, groundwater samples were collected from groundwater monitoring
well MW-10R. The maximum concentrations of selected dissolved-phase COCs found
during August 9, 2023, sampling event are summarized in the table below:
Maximum Groundwater Concentrations (August 9, 2023)
Chemical of
Concern
(COC)
Monitoring Well
ID
Concentration
(µg/L)
North Carolina
GCL Standards
(µg/L)
Benzene MW-10R 9,530 5,000
Toluene MW-10R <50 260,000
Ethylbenzene MW-10R 4,080 84,500
Xylenes (total) MW-10R 824 85,500
MTBE (1) MW-10R 565 20,000
Note:
1) MTBE = Methyl tert-butyl ether
2) Concentrations in Bold exceed the applicable North Carolina GCL Standard
Dissolved-phase benzene was detected above the applicable North Carolina Gross
Contaminant Level (GCL) Standards of 5,000 µg/L in MW-10R at 9,530 µg/L. No other
dissolved-phase COCs were detected in concentrations exceeding the applicable North
Annual Groundwater Monitoring Report – 2023
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Carolina GCL Standards. Overall, dissolved-phase COC concentrations have remained
stable in comparison to historical groundwater analytical data.
The next annual groundwater monitoring and sampling event for the Site is scheduled for
September 2024. All groundwater monitoring wells associated with the Site will be
gauged to check for free product and to determine the potentiometric surface at the Site.
Arcadis will sample groundwater monitoring well MW-10R for analysis of benzene,
toluene, ethylbenzene, and total xylenes (BTEX) and methyl tert-butyl ether (MTBE) by
Standard Method (SM) 6200B. An Annual Groundwater Monitoring Report will be
submitted to the NCDEQ for review and approval within 45-days of receipt of the
laboratory analytical report.
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1.0 SITE HISTORY AND CHARACTERIZATION
Former BP Facility #24177 is located at 4825 South Tryon Street in Charlotte,
Mecklenburg County, North Carolina (the Site). This annual monitoring report is being
submitted in accordance with 15A NCAC 2L .0400 with the North Carolina Department of
Environmental Quality (NC DEQ).
The Site is located within a commercial area on the east side of the intersection of South
Tryon Street and Nations Ford Road (Figure 1). The Site is a former BP retail fuel station
that closed in 1993. Currently, the Site is operated as a used automobile sales and repair
lot and is owned by Ziad and Adel Nasrallah in Charlotte, North Carolina. Two (2) one-
story buildings are located on the property: a main service building containing an office
and three (3) automobile service bays, as well as a storage building. The concrete slab,
located behind the main service building, was the foundation to a metal garage
constructed by the property owner in August 2006.
Gasoline underground storage tanks (USTs) were previously located directly southwest
of the garage building and former fuel oil / used oil USTs were previously located directly
southeast of the garage building. One or more additional gasoline USTs may also have
been located northwest of the main service building, adjacent to the former dispenser
islands. A release of an unknown quantity of gasoline was discovered during July 1993
UST closure activities.
The Site is located in the Piedmont physiographic province, which is characterized by
moderately level inter stream areas separated by broad valleys. Bedrock in Charlotte,
North Carolina is mapped within the Charlotte Belt lithologic division of the Piedmont.
Competent bedrock in the Piedmont province in North Carolina is typically overlain by
variable thicknesses of saprolite and soil, collectively referred to as “overburden.”
Groundwater in the Piedmont province occurs in the overburden under unconfined (i.e.,
water table) conditions, and in the underlying bedrock under both unconfined and
confined conditions. Groundwater in the overburden occurs within pore spaces of the
unconsolidated medium, including relict bedrock structures (i.e., fractures and foliations).
Due to the typical fine-grained nature of saprolite, the formation normally possesses a
relatively low permeability and is not generally used for groundwater production.
An updated receptor survey, as well as the source area investigation, is summarized in
the Groundwater Site Assessment Report from Piedmont Geologic, P.C. (Piedmont),
dated January 2000.
The NCDEQ has currently classified the Site as an intermediate risk (I165D) in
accordance with 15A NCAC 2L .0400 due to concentrations of benzene greater than the
North Carolina Department of Environmental Quality (NCDEQ) Gross Contaminant Level
(GCL) Standards for groundwater. Dissolved-phase chemicals of concern (COCs) at the
Site are compared to the North Carolina Gross Contaminant Level (GCL) Standards.
The land use classification is Commercial. A site location map is presented as Figure 1
and a site map is shown as Figure 2.
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2.0 FREE PRODUCT
Gauging activities performed at the Site on August 9, 2023, did not indicate the presence of the
free product. Historically, the free product has not been detected at the Site.

Historical free product gauging information is presented in Appendix A.

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3.0 GROUNDWATER MONITORING
3.1 Groundwater Gauging
On August 9, 2023, Arcadis personnel completed an annual groundwater monitoring and
sampling event at the Site. Twelve (12) groundwater monitoring wells (MW-1R, MW-2,
MW-3, MW-5, MW-7, MW-8, MW-10R, MW-11, MW-12, MW-13, MW-14, and MW-16D)
were gauged. Groundwater monitoring wells MW-6 and MW-15 were inaccessible and
could not be gauged. Gauging was conducted with an oil/water interface probe (IP) prior
to purging and sampling to determine depth to bottom (DTB), DTW, and DTP, if present.
The IP and attached tape, marked in 0.01-foot increments, were properly decontaminated
before each use with Alconox soap and rinsed with distilled water. The DTW was
measured from the marked survey point on the top of well casing (TOC). All
measurements were recorded to the nearest 0.01-foot increment.
On August 9, 2023, DTW ranged from 20.37 feet btoc in groundwater monitoring well
MW-12 to 27.23 feet btoc in monitoring well MW-1R. Free product was not detected at
the Site on August 9, 2023. The observed groundwater flow direction was towards the
southeast, which is consistent with historical observed groundwater flow direction.
Monitoring well construction details are included in Table 1. Current groundwater
elevations are summarized in Table 2. Historical groundwater gauging data is provided in
Appendix A. A potentiometric surface map depicting historical groundwater flow direction
for August 9, 2023, is provided as Figure 3.
3.2 Groundwater Sampling
On August 9, 2023, groundwater monitoring well MW-10R was purged of stagnant water
to prepare for groundwater sampling. Prior to purging, the amount of water to be
removed was calculated using the following formula:
3.1415 x r2 x (TD-DTW) x 7.481 = gallons of water (1 well volume)
Where: r = radius of well (in feet)
TD = total depth of well (in feet)
DTW = depth to water (in feet)
In order to ensure that the water in the wells is representative of the water in the aquifer,
a minimum of three well volumes were removed.
Groundwater samples obtained from the groundwater monitoring well were collected from
disposable polyethylene bailers using new nylon rope. Groundwater samples were
placed in laboratory supplied containers and shipped on wet ice to TestAmerica Inc. in
Pensacola, Florida, for analysis of benzene, toluene, ethylbenzene, and total xylenes
(BTEX) and methyl-tert butyl ether (MTBE) by Standard Method (SM) 6200B.
Groundwater samples submitted for BTEX and MTBE analysis were collected in triplicate
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40-milliliter volatile organic analysis (VOA) glass vials with Teflon-lined septa screw caps
preserved with hydrochloric acid.
The laboratory analytical report and chain-of-custody record for the August 9, 2023,
groundwater sampling event is included as Appendix B.
3.3 Groundwater Analytical Results
Groundwater analytical data from the August 9, 2023, groundwater sampling event
indicated the following:
• Dissolved-phase concentrations of benzene were detected in concentrations
exceeding the applicable North Carolina GCL Standard of 5,000 µg/L in
groundwater monitoring well MW-10R (9,530 µg/L).
The maximum concentrations of selected dissolved-phase COCs found during the August
9, 2023, sampling event are summarized in the table below:
Maximum Groundwater Concentrations (August 9, 2023)
Chemical of
Concern
(COC)
Monitoring Well
ID
Concentration
(µg/L)
North Carolina
GCL Standards
(µg/L)
Benzene MW-10R 9,530 5,000
Toluene MW-10R <50 260,000
Ethylbenzene MW-10R 4,080 84,500
Xylenes (total) MW-10R 824 85,500
MTBE (1) MW-10R 565 20,000
Note:
1) MTBE = Methyl tert-butyl ether
2) Concentrations in Bold exceed the applicable North Carolina GCL Standard

Historical and current analytical groundwater data can be found in Appendix C. A
dissolved phase concentration map is presented as Figure 4. An isoconcentration map
depicting the dissolved-phase extent of benzene is included as Figure 5.

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4.0 SITE REMEDIATION
4.1 Remediation Activities to Date
Summarized in the table below is a chronology of remediation activities performed at the site to
date:
Date Activity
July 1993 Subsurface release discovered during UST closure activities
1993 - 2000 Installation of monitoring wells, soil sampling events, and source
area investigation
2000 - Present Monitored Natural Attenuation
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5.0 CONCLUSIONS AND RECOMMENDATIONS
Free Product was not observed at the Site during the August 9, 2023, groundwater
monitoring and sampling event. Dissolved-phase benzene was detected above the
applicable North Carolina GCL standard in groundwater monitoring well, MW-10R.
Overall, dissolved-phase COC concentrations have remained stable in comparison to
historical groundwater analytical data.
The next annual groundwater monitoring and sampling event for the Site is scheduled for
September 2024. All groundwater monitoring wells associated with the Site will be
gauged to check for free product and to determine the potentiometric surface at the Site.
Arcadis will sample groundwater monitoring well MW-10R for analysis of benzene,
toluene, ethylbenzene, and total xylenes (BTEX) and methyl tert-butyl ether (MTBE) by
Standard Method (SM) 6200B. An Annual Groundwater Monitoring Report will be
submitted to the NCDEQ for review and approval within 45-days of receipt of the
laboratory analytical report.
TABLES
Well
Identification
Well
Type
Date
Installed
Total Depth
(feet btoc)
Well Diameter
(inches)
Screen Interval
(feet btoc)
TOC Elevation(1)
(feet)
MW-1R II 06/20/14 38 2 23 - 38 100.86
MW-2 II 03/30/94 34 4 24 - 34 100.14
MW-3 II 03/31/94 31.5 4 21.5 - 31.5 98.39
MW-3i(2) II 07/14/94 60 2 50 - 60 98.07
MW-4(3) II 03/31/94 26 4 16 - 26 99.53
MW-5 II 04/01/94 30 4 20 - 30 98.07
MW-6 II 07/13/94 30 4 15 - 30 98.37
MW-7 II 07/13/94 31.5 4 16.5 - 31.5 95.83
MW-8 II 07/14/94 31 4 16 - 31 99.63
MW-9(3) II 07/15/94 30.5 4 15.5 - 30.5 96.44
MW-10R II 06/19/14 34 2 24 - 34 100.66
MW-11 II 02/13/95 30 2 20 - 30 100.51
MW-12 II 04/14/95 28 2 13 - 28 87.55
MW-13 II 11/11/99 27.5 2 12.5 - 27.5 91.31
MW-14 II 11/09/99 34 2 24 - 34 99.19
MW-15 II 11/10/99 30 2 15 - 30 83.49
MW-16D III 11/10/99 75 2 72 - 75 95.37
Notes:(1) Measured in feet relative to Site datum.(2) Monitoring well abandoned prior to the November 1999 groundwater sampling event.(3) Wells covered with concrete slab and metal storage building, August 2006.
btoc = below top of casing
TOC = top of casing
Charlotte, Mecklenburg County, North Carolina
NCDEQ Incident No. 12032
Table 1
Monitoring Well Construction Details
BP # 24177
4825 South Tryon Street
Page 1 of 1
BP # 24177
Well Identification Date TOC Elevation
(feet)
Depth to
LNAPL
(feet btoc)
Depth to
Groundwater
(feet btoc)
Groundwater
Elevation
(feet)
MW-1R 08/09/23 100.86 ND 27.23 73.63
MW-2 08/09/23 100.14 ND 26.80 73.34
MW-3 08/09/23 98.39 ND 23.45 74.94
MW-5 08/09/23 98.07 ND 24.60 73.47
MW-6 08/09/23 98.07
MW-7 08/09/23 95.83 ND 24.05 71.78
MW-8 08/09/23 99.63 ND 26.56 73.07
MW-10R 08/09/23 100.66 ND 27.18 73.48
MW-11 08/09/23 100.51 ND 26.50 74.01
MW-12 08/09/23 87.55 ND 20.37 67.18
MW-13 08/09/23 91.31 ND 20.45 70.86
MW-14 08/09/23 99.19 ND 26.13 73.06
MW-15 08/09/23 83.49
MW-16D 08/09/23 95.37 ND 23.33 72.04
Notes:
TOC = top of casing, measured in feet relative to site datum.
LNAPL = light non-aqueous phase liquid
btoc = below top of casing
ND = not detected
MW-6 and MW-15 were not gauged. Unable to locate.
Unable to locate
Unable to locate
NCDEQ Incident No. 12032
Table 2
Groundwater Elevation Data
4825 South Tryon Street
Charlotte, Mecklenburg County, North Carolina
Page 1 of 1
FIGURES
ATLANTIC RICHFIELD COMPANY
C/O BP PRODUCTS NORTH AMERICA, INC.
FORMER BP STATION 24177
4825 S TRYON STREET, CHARLOTTE, NORTH CAROLINAANNUAL GROUNDWATER MONITORING REPORT - 2023
1
FIGUREIMAGES: NC_Charlotte_West_20160715_TM_geo.jpg Arcadis Logo_2021.PNGXREFS: GEN-X-TITLEPROJECTNAME: ----CITY:SYRACUSE, NY DIV/GROUP:ENV/IM-DV DB:D. HOWES, R. ALLEN LD:(Opt) PIC:(Opt) PM:(Reqd) TM:(Opt) LYR:(Opt)ON=*;OFF=*REF*C:\Users\km7685\ACCDocs\Arcadis\AUS-BP-FX4 24177-CHARLOTTE North Carolina\Project Files\2023\01-In Progress\01-DWG\GEN-F01-SLM.dwg LAYOUT: 1 SAVED: 10/5/2023 10:26 AM ACADVER: 24.1S (LMS TECH) PAGESETUP: ---- PLOTSTYLETABLE: ---- PLOTTED: 10/5/2023 10:53 AM BY: K,MAHENDRAApproximate Scale: 1 in. = 2,000 ft.
0 2,000'4,000'
SITE LOCATION
NORTH CAROLINA
SITE LOCATION MAPAREA
LOCATION
REFERENCE: BASE MAP USGS 7.5. MIN. TOPO. QUAD., CHARLOTTE WEST, NORTH CAROLINA, 2016.
MAP SOURCE: 24177-A.DWG (12/28/99), PIEDMONT
GEOLOGIC, P.C.XXMW-4
MW-9
U.P.
U.P.
U.P.
U.P.
A
S
P
H
A
L
TCANOPY
CONCRETE CONC
RETE
ASPHALT
GRA
S
S
FORMER
UST AREA
FORMER OIL
SEPARATOR
FORMER
DRY WELL
FORMER FUEL
OIL & USED
OIL UST AREA
FORMER
UST AREA
ASPHALT
FORMER PRODUCT
TRANSFER LINES
FORMER
VENT
PIPES
FORMER
BP SERVICE
STATION
NO. 24177
EXISTING
BUILDING
FORMER
PUMP ISLAND
STORAGE
BUILDING
GAS
METER
SOUT
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STRIP MALLASPHALT
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ASPHALT
ASPHALT
NATIONS FORD RD.ELECTRIC
BOX STRIP
MALL
MW-3I
CONCRETE SLABXXX
X
X
X
GRAVEL
LEGEND
MW-13
MW-12
MW-7
MW-2
MW-8
MW-6
MW-11
MW-14
MW-1R
MW-15
MW-10R
MW-3
MW-5
MW-16D
SITE MAP
0 120'60'
APPROXIMATE SCALE 1 in. = 60 ft.
ATLANTIC RICHFIELD COMPANY
C/O BP PRODUCTS NORTH AMERICA, INC.
FORMER BP STATION 24177
4825 S TRYON STREET, CHARLOTTE, NORTH CAROLINAANNUAL GROUNDWATER MONITORING REPORT - 2023
2
FIGUREIMAGES: Arcadis Logo_2021.PNGXREFS: GEN-X-TITLEPROJECTNAME: ----CITY:SYRACUSE, NY DIV/GROUP:ENV/IM-DV DB:D. HOWES, R. ALLEN LD:(Opt) PIC:(Opt) PM:(Reqd) TM:(Opt) LYR:(Opt)ON=*;OFF=*REF*C:\Users\km7685\ACCDocs\Arcadis\AUS-BP-FX4 24177-CHARLOTTE North Carolina\Project Files\2023\01-In Progress\01-DWG\GEN-F02-SITE MAP.dwg LAYOUT: 2 SAVED: 10/5/2023 10:38 AM ACADVER: 24.1S (LMS TECH) PAGESETUP: ---- PLOTSTYLETABLE: ---- PLOTTED: 10/5/2023 11:04 AM BY:K, MAHENDRAMONITORING WELL (TYPE II)
MONITORING WELL (TYPE III)
DESTROYED MONITORING WELL
ABANDONED MONITORING WELL
APPROXIMATE PROPERTY LINES
W.M.
MW-4
MW-9
U.P.
U.P.
U.P.
U.P.
A
S
P
H
A
L
TCANOPY
CONCRETE
CON
C
RETE
ASPHALT
GRA
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S
FORMER
UST AREA
FORMER OIL
SEPARATOR
FORMER
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FORMER FUEL
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OIL UST AREA
FORMER
UST AREA
ASPHALT
FORMERVENT
PIPES
FORMER
BP SERVICE
STATION
NO. 24177
EXISTING
BUILDING
FORMER
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STORAGE
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XXXNATIONS FORD RD.ELECTRIC
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MW-3I
MAP SOURCE: 24177-A.DWG (12/28/99), PIEDMONT
GEOLOGIC, P.C.
CONCRETE SLAB
FORMER PRODUCT
TRANSFER LINES
MW-13(70.86)
MW-12
(67.18)
MW-7
(71.78)
MW-3(74.94)
MW-2
(73.34)
MW-8(73.07)
MW-6
(NM)
MW-11
(74.01)
MW-14
(73.06)
MW-1R
(73.63)
MW-10R
(73.48)
MW-15
(NM)
MW-5(73.47)
MW-16D
(72.04)
68.0070.0072.0074
.
0
0
74
.
0
0
72.00
70.0068.00POTENTIOMETRIC SURFACE MAP
AUGUST 09, 202374.00
(NM)
ATLANTIC RICHFIELD COMPANY
C/O BP PRODUCTS NORTH AMERICA, INC.
FORMER BP STATION 24177
4825 S TRYON STREET, CHARLOTTE, NORTH CAROLINAANNUAL GROUNDWATER MONITORING REPORT - 2023
3
FIGUREIMAGES: Arcadis Logo_2021.PNGXREFS: GEN-X-TITLEPROJECTNAME: ----CITY:SYRACUSE, NY DIV/GROUP:ENV/IM-DV DB:D. HOWES, R. ALLEN LD:(Opt) PIC:(Opt) PM:(Reqd) TM:(Opt) LYR:(Opt)ON=*;OFF=*REF*C:\Users\km7685\ACCDocs\Arcadis\AUS-BP-FX4 24177-CHARLOTTE North Carolina\Project Files\2023\01-In Progress\01-DWG\GWM-2023Q3-F03-PSM.dwg LAYOUT: 3 SAVED: 10/5/2023 11:32 AM ACADVER: 24.1S (LMS TECH) PAGESETUP: ---- PLOTSTYLETABLE: ---- PLOTTED: 10/5/2023 11:54 AMBY: K, MAHENDRA0 120'60'
APPROXIMATE SCALE 1 in. = 60 ft.
(74.94)
MONITORING WELL (TYPE II)
MONITORING WELL (TYPE III)
DESTROYED MONITORING WELL
ABANDONED MONITORING WELL
APPROXIMATE PROPERTY LINES
GROUNDWATER ELEVATION IN
FEET ABOVE MEAN SEA LEVEL (FTAMSL)
NOT MEASURED
GROUNDWATER ELEVATION
CONTOUR (FT AMSL)(DASHED
WHERE INFERRED)
GROUNDWATER FLOW DIRECTION
LEGEND
XXMW-4
MW-9
U.P.
U.P.
U.P.
U.P.
A
S
P
H
A
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TCANOPY
CONCRETE CONC
RETE
ASPHALT
GRA
S
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FORMER
UST AREA
FORMER OIL
SEPARATOR
FORMER
DRY WELL
FORMER FUEL
OIL & USED
OIL UST AREA
FORMER
UST AREA
ASPHALT
FORMER PRODUCT
TRANSFER LINES
FORMER
VENT
PIPES
FORMER
BP SERVICE
STATION
NO. 24177
EXISTING
BUILDING
FORMER
PUMP ISLAND
STORAGE
BUILDING
GAS
METER
SOU
T
H T
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I
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STRIP MALLASPHALT
GRASS
ASPHALT
ASPHALT
NATIONS FORD RD.ELECTRIC
BOX STRIP
MALL
MW-3I
MAP SOURCE: 24177-A.DWG (12/28/99), PIEDMONT
GEOLOGIC, P.C.
CONCRETE SLABXXX
X
X
X
SAMPLE ID
Abbrev.Constituent NC DEQ GCL's
B Benzene 5,000
T Toluene 260,000
E Ethylbenzene 84,500
X Xylenes (Total)85,500
M MTBE 20,000
(NS)
LEGEND
MW-13
(NS)
MW-12
(NS)
MW-7
(NS)
MW-2
(NS)
MW-8
(NS)
MW-6
(NS)
MW-11
(NS)
MW-14
(NS)
MW-1R(NS)
MW-15
(NS)
MW-10R
MW-3
(NS)
MW-5
(NS)
MW-16D
(NS)
MW-10R
Date 10/11/2019 8/27/2020 10/20/2021 8/9/2022 8/9/2023
B 7,920 7,390 9,000 11,000 9,530
T <50 <100 <50 <50 <50
E 1,480 2,310 2,620 3,950 4,080
X 2,890 2,860 2,480 2,020 824
MTBE 1,690 1,320 1,340 875 565
GROUNDWATER ANALYTICAL MAP
OCTOBER 2019 - AUGUST 2023
CITY:SRYACUSE, NY DIV/GROUP:ENV/IM-DV DB: URS, R. ALLEN LD:(Opt) PIC:(Opt) PM:(Reqd) TM:(Opt) LYR:(Opt)ON=*;OFF=*REF*C:\Users\km7685\ACCDocs\Arcadis\AUS-BP-FX4 24177-CHARLOTTE North Carolina\Project Files\2023\01-In Progress\01-DWG\GWM-2023Q3-F04-GWAM.dwg LAYOUT: 4 SAVED: 10/5/2023 10:51 AM ACADVER: 24.1S (LMS TECH) PAGESETUP: ---- PLOTSTYLETABLE: PLTFULL.CTB PLOTTED: 10/5/20232:24 PM BY: K, MAHENDRA NOTES:
1. ALL DATA REPORTED IN MICROGRAMS PER LITER (µg/L).
2. BOLD = CONCENTRATIONS DETECTED ABOVE NORTH
CAROLINA DEPARTMENT OF ENVIRONMENTAL QUALITY
GROSS CONTAMINATE LEVEL (NCDEQGCL's).
ATLANTIC RICHFIELD COMPANY
C/O BP PRODUCTS NORTH AMERICA, INC.
FORMER BP STATION 24177
4825 S TRYON STREET, CHARLOTTE, NORTH CAROLINAANNUAL GROUNDWATER MONITORING REPORT - 2023
4
FIGUREIMAGES: Arcadis Logo_2021.PNGXREFS: GEN-X-TITLEPROJECTNAME: ----CITY:SYRACUSE, NY DIV/GROUP:ENV/IM-DV DB:D. HOWES, R. ALLEN LD:(Opt) PIC:(Opt) PM:(Reqd) TM:(Opt) LYR:(Opt)ON=*;OFF=*REF*C:\Users\km7685\ACCDocs\Arcadis\AUS-BP-FX4 24177-CHARLOTTE North Carolina\Project Files\2023\01-In Progress\01-DWG\GWM-2023Q3-F04-GWAM.dwg LAYOUT: 4 SAVED: 10/5/2023 10:51 AM ACADVER: 24.1S (LMS TECH) PAGESETUP: ---- PLOTSTYLETABLE: ---- PLOTTED: 10/5/2023 2:24 PMBY: K, MAHENDRA0 120'60'
APPROXIMATE SCALE 1 in. = 60 ft.
MONITORING WELL (TYPE II)
MONITORING WELL (TYPE III)
DESTROYED MONITORING WELL
ABANDONED MONITORING WELL
APPROXIMATE PROPERTY LINES
NOT SAMPLED
TREE LINESTRIP MALLASPHALT
ASPHALT
MAP SOURCE: 24177-A.DWG (12/28/99), PIEDMONT
GEOLOGIC, P.C.XXMW-4
MW-9
U.P.
U.P.
U.P.
U.P.
A
S
P
H
A
L
T
CAN
O
PY
CONCRETE CONC
RETE
ASPHALT
GRA
S
S
FORMER
UST AREA
FORMER OIL
SEPARATOR
FORMER
DRY WELL
FORMER FUEL
OIL & USED
OIL UST AREA
FORMER
UST AREA
ASPHALT
FORMER PRODUCT
TRANSFER LINES
FORMER
VENT
PIPES
FORMER
BP SERVICE
STATION
NO. 24177
EXISTING
BUILDING
FORMER
PUMP ISLAND
STORAGE
BUILDING
GAS
METER
SOUT
H T
R
Y
O
N ST
R
E
E
T
TREE LINERA
I
L
RO
AD
EM
B
A
N
K
M
E
N
T
ASPHALT
GRASS
ASPHALT
NATIONS FORD RD.ELECTRIC
BOX STRIP
MALL
MW-3I
CONCRETE SLABXXX
X
X
X
(9,530)
(9,530)
5,000
LEGEND
MW-13
(NS)
MW-15
(NS)
MW-12
(NS)
MW-7
(NS)
MW-2
(NS)
MW-8
(NS)
MW-5
(NS)
MW-6
(NS)
MW-11
(NS)
MW-14
(NS)
MONITORING WELL (TYPE II)
MONITORING WELL (TYPE III)
DESTROYED MONITORING WELL
ABANDONED MONITORING WELL
APPROXIMATE PROPERTY LINES
NOT SAMPLED
BENZENE ISOCONCENTRATION
ESTIMATED BENZENE
ISOCONCENTRATION CONTOUR IN
MICROGRAMS PER LITER (µg/L) (GCL)
GROSS CONTAMINATE LEVEL STANDARD
MW-1R
MW-10R
MW-3
(NS)
5,00
0
(NS)
MW-16D
(NS)
BENZENE ISOCONCENTRATION MAP
AUGUST 09, 2023
0 120'60'
APPROXIMATE SCALE 1 in. = 60 ft.
ATLANTIC RICHFIELD COMPANY
C/O BP PRODUCTS NORTH AMERICA, INC.
FORMER BP STATION 24177
4825 S TRYON STREET, CHARLOTTE, NORTH CAROLINAANNUAL GROUNDWATER MONITORING REPORT - 2023
5
FIGUREIMAGES: Arcadis Logo_2021.PNGXREFS: GEN-X-TITLEPROJECTNAME: ----CITY:SYRACUSE, NY DIV/GROUP:ENV/IM-DV DB:D. HOWES, R. ALLEN LD:(Opt) PIC:(Opt) PM:(Reqd) TM:(Opt) LYR:(Opt)ON=*;OFF=*REF*C:\Users\km7685\ACCDocs\Arcadis\AUS-BP-FX4 24177-CHARLOTTE North Carolina\Project Files\2023\01-In Progress\01-DWG\GWM-2023Q3-F05-BENZENE.dwg LAYOUT: 5 SAVED: 10/5/2023 10:10 AM ACADVER: 24.1S (LMS TECH) PAGESETUP: ---- PLOTSTYLETABLE: ---- PLOTTED: 10/5/2023 10:52AM BY: K, MAHENDRA
APPENDIX A
Historical Groundwater Elevation Data
Historical Groundwater Elevation Data
Well Identification Date
TOC
Elevation(1)
(feet)
Depth to LNAPL(feet btoc)
Depth to Groundwater (1)
(feet btoc)
LNAPL Elevation (1)
(feet)
Groundwater
Elevation (1)
(feet)
4/14/1994 ND 26.00 NA 74.865/22/1995 ND 26.33 NA 74.536/18/1998 ND 23.84 NA 77.02
11/15/1999 ND 28.09 NA 72.778/8/2001 ND 28.95 NA 71.9111/26/2002 ND 30.02 NA 70.84
6/23/2004 ND 27.93 NA 72.937/18/2005 ND 27.05 NA 73.818/29/2006 ND 29.51 NA 71.35
8/16/2007 ND 25.09 NA 75.778/26/2009 ND 29.98 NA 70.8811/3/2010 ND 30.85 NA 70.01
8/30/2011 ND 32.28 NA 68.588/29/2012 ND 31.50 NA 69.368/29/2013 ND 29.13 NA 71.73
8/21/2014 ND 27.66 NA 73.209/1/2015 ND 28.78 NA 72.08
9/20/2016 ND 30.18 NA 70.689/14/2017 ND 29.82 NA 71.048/22/2018 ND 30.00 NA 70.869/3/2019 ND 26.65 NA 74.218/27/2020 ND 25.27 NA 75.59
10/20/2021 ND 27.05 NA 73.818/9/2022 ND 28.20 NA 72.66
8/9/2023 ND 27.23 NA 73.63
4/14/1994 ND 25.30 NA 74.84
5/22/1995 ND 25.36 NA 74.78
6/18/1998 ND 22.43 NA 77.71
11/15/1999 ND 27.25 NA 72.89
8/8/2001 ND 28.48 NA 71.66
11/27/2002 ND 29.45 NA 70.69
6/23/2004 ND 27.10 NA 73.04
7/18/2005 ND 26.15 NA 73.99
8/29/2006 ND 28.59 NA 71.55
8/26/2009 ND 29.53 NA 70.61
11/3/2010 ND 30.25 NA 69.89
8/30/2011 ND 31.54 NA 68.60
8/29/2012 ND 30.71 NA 69.43
8/29/2013 ND 28.57 NA 71.57
8/21/2014 ND 27.80 NA 72.34
9/1/2015 ND 29.06 NA 71.08
9/20/2016 ND 29.81 NA 70.33
9/14/2017 ND 29.53 NA 70.61
8/22/2018 ND 29.60 NA 70.54
9/3/2019 ND 26.06 NA 74.08
8/27/2020 ND 24.65 NA 75.49
10/20/2021 ND 26.65 NA 73.49
8/9/2022 ND 27.87 NA 72.27
8/9/2023 ND 26.80 NA 73.34
4/14/1994 ND 23.48 NA 74.91
5/22/1995 ND 23.99 NA 74.40
6/18/1998 ND 21.38 NA 77.01
11/15/1999 ND 25.74 NA 72.65
8/23/2001 ND 26.94 NA 71.45
11/26/2002 ND 27.75 NA 70.64
6/23/2004 ND 25.53 NA 72.86
7/18/2005 ND 24.68 NA 73.71
8/29/2006 ND 26.44 NA 71.95
11/3/2010 ND 28.64 NA 69.75
8/30/2011 ND 30.05 NA 68.34
8/29/2012 ND 29.30 NA 69.09
8/21/2014 ND 26.08 ND 72.31
9/1/2015 ND 27.31 ND 71.08
9/20/2016 ND 28.15 ND 70.24
9/14/2017 ND 27.71 NA 70.68
8/22/2018 ND 27.75 NA 70.64
9/3/2019 ND 24.48 NA 73.91
8/27/2020 ND 23.27 NA 75.12
10/20/2021
8/9/2022 ND 24.50 NA 73.89
8/9/2023 ND 23.45 NA 74.94
Vehicle Parked on well
100.86MW-1R
MW-2 100.14
MW-3 98.39
100.86MW-1
Appendix A
BP # 24177
Charlotte, Mecklenburg County, North Carolina
NCDEQ Incident No. 12032
4825 South Tryon Street
1 of 6
Historical Groundwater Elevation Data
Well Identification Date
TOC
Elevation(1)
(feet)
Depth to LNAPL(feet btoc)
Depth to Groundwater (1)
(feet btoc)
LNAPL Elevation (1)
(feet)
Groundwater
Elevation (1)
(feet)
Appendix A
BP # 24177
Charlotte, Mecklenburg County, North Carolina
NCDEQ Incident No. 12032
4825 South Tryon Street
5/22/1995 ND 24.08 NA 73.99
6/18/1998 ND 21.61 NA 76.46
4/14/1994 ND 17.95 NA 81.58
5/22/1995 ND 25.29 NA 74.24
6/18/1998 ND 23.35 NA 76.18
11/15/1999 DRY DRY DRY DRY
8/8/2001 DRY DRY DRY DRY
11/27/2002 DRY DRY DRY DRY
6/23/2004 ND 25.80 NA 73.73
7/18/2005 DRY DRY DRY DRY
4/14/1994 ND 24.02 NA 74.05
5/22/1995 ND 24.38 NA 73.69
6/18/1998 ND 22.85 NA 75.22
11/15/1999 ND 26.26 NA 71.81
8/8/2001 ND 25.12 NA 72.95
11/27/2002 ND 27.22 NA 70.85
6/23/2004 ND 26.05 NA 72.02
7/18/2005 ND 25.20 NA 72.87
8/29/2006 ND 27.23 NA 70.84
8/26/2009 ND 28.05 NA 70.02
11/3/2010 ND 29.28 NA 68.79
8/30/2011 ND 29.32 NA 68.75
8/29/2012 ND 29.32 NA 68.75
8/29/2013 ND 27.56 NA 70.51
8/21/2014 ND 26.58 NA 71.49
9/20/2016
9/14/2017
8/22/2018 ND 28.45 NA 69.62
9/3/2019 ND 25.72 NA 72.35
8/27/2020 ND 24.70 NA 73.37
10/20/2021 ND 24.40 NA 73.67
8/9/2022 ND 26.65 NA 71.42
8/9/2023 ND 24.60 NA 73.47
5/22/1995 ND 24.34 NA 74.03
6/18/1998 ND 22.32 NA 76.05
11/15/1999 ND 25.78 NA 72.59
8/8/2001 ND 26.04 NA 72.33
11/27/2002 ND 27.45 NA 70.92
7/18/2005 ND 24.96 NA 73.41
8/29/2006 ND 27.28 NA 71.09
8/26/2009 ND 27.71 NA 70.66
11/3/2010 ND 28.83 NA 69.54
8/30/2011 ND 29.54 NA 68.83
8/29/2012 ND 29.55 NA 68.82
8/29/2013 ND 26.96 NA 71.41
8/21/2014 ND 25.98 NA 72.39
9/1/2015 ND 27.14 NA 71.23
9/20/2016 ND 28.65 NA 69.72
9/14/2017 ND 28.11 NA 70.26
8/22/2018 ND CNL NA NM
9/3/2019 ND CNL NA NM
8/27/2020 ND CNL NA NM
10/20/2021 ND CNL NA NM
8/9/2022 ND CNL NA NM
8/9/2023 ND CNL NA NM
98.07
98.37MW-6
MW-3i(2)
MW-4(3) 99.53
Well Inaccessible
Well Inaccessible
MW-5 98.07
2 of 6
Historical Groundwater Elevation Data
Well Identification Date
TOC
Elevation(1)
(feet)
Depth to LNAPL(feet btoc)
Depth to Groundwater (1)
(feet btoc)
LNAPL Elevation (1)
(feet)
Groundwater
Elevation (1)
(feet)
Appendix A
BP # 24177
Charlotte, Mecklenburg County, North Carolina
NCDEQ Incident No. 12032
4825 South Tryon Street
5/22/1995 ND 22.42 NA 73.41
6/18/1998 ND 20.11 NA 75.72
11/15/1999 ND 24.54 NA 71.29
8/8/2001 ND 24.55 NA 71.28
11/27/2002 DRY DRY DRY DRY
6/23/2004 ND 23.90 NA 71.93
7/18/2005 ND 22.90 NA 72.93
8/29/2006 ND 25.33 NA 70.50
8/26/2009 ND 26.17 NA 69.66
11/03/10 ND 27.52 NA 68.31
8/30/2011 ND 28.61 NA 67.22
8/29/2012 ND 28.25 NA 67.58
8/29/2013 ND 25.62 NA 70.21
8/21/2014 ND 24.90 NA 70.93
9/1/2015 ND 26.26 NA 69.57
9/20/2016
9/14/2017 ND 25.82 NA 70.01
8/22/2018 ND 26.05 NA 69.78
9/3/2019 ND 22.95 NA 72.88
8/27/2020 ND 20.87 NA 74.96
10/20/2021 ND 21.42 NA 74.41
8/9/2022 ND 24.76 NA 71.07
8/9/2023 ND 24.05 NA 71.78
5/22/1995 ND 24.27 NA 75.36
6/18/1998 ND 21.35 NA 78.28
11/15/1999 ND 26.21 NA 73.42
8/8/2001 ND 27.58 NA 72.05
11/27/2002 ND 28.25 NA 71.38
6/23/2004 ND 26.95 NA 72.68
7/18/2005 ND 25.08 NA 74.55
8/29/2006 ND 27.28 NA 72.35
8/26/2009 ND 28.52 NA 71.11
11/3/2010 ND 29.17 NA 70.46
8/30/2011 ND 30.01 NA 69.62
8/29/2012 ND 29.15 NA 70.48
8/29/2013 ND 27.33 NA 72.30
8/21/2014 ND 26.74 NA 72.89
9/1/2015 ND 28.20 NA 71.43
9/20/2016 ND 29.25 NA 70.38
9/14/2017 ND 29.00 NA 70.63
8/22/2018 ND 29.00 NA 70.63
9/3/2019 ND 26.22 NA 73.41
8/27/2020 ND 23.85 NA 75.78
10/20/2021 ND 25.95 NA 73.68
8/9/2022 ND 27.30 NA 72.33
8/9/2023 ND 26.56 NA 73.07
MW-9(3) 5/22/1995 96.44 ND 22.83 NA 73.61
Well Obstructed
95.83MW-7
99.63MW-8
3 of 6
Historical Groundwater Elevation Data
Well Identification Date
TOC
Elevation(1)
(feet)
Depth to LNAPL(feet btoc)
Depth to Groundwater (1)
(feet btoc)
LNAPL Elevation (1)
(feet)
Groundwater
Elevation (1)
(feet)
Appendix A
BP # 24177
Charlotte, Mecklenburg County, North Carolina
NCDEQ Incident No. 12032
4825 South Tryon Street
5/22/1995 ND 24.40 NA 76.26
6/18/1998 ND 22.68 NA 77.98
11/15/1999 ND 26.93 NA 73.73
8/23/2001 ND 28.11 NA 72.55
11/26/2002 ND 28.92 NA 71.74
6/23/2004 ND 26.75 NA 73.91
7/18/2005 ND 25.94 NA 74.72
8/29/2006 ND 28.37 NA 72.29
8/16/2007 ND 27.90 NA 72.76
8/26/2009 ND 28.75 NA 71.91
11/3/2010 ND 29.55 NA 71.11
8/30/2011 ND 29.81 NA 70.85
8/29/2012 ND 29.80 NA 70.86
8/29/2013 ND 27.85 NA 72.81
8/21/2014 ND 27.52 NA 73.14
9/2/2015 ND 28.62 NA 72.04
9/20/2016 ND 30.16 NA 70.50
9/14/2017 ND 29.84 NA 70.82
8/22/2018 ND 30.00 NA 70.66
10/11/2019 ND 27.50 NA 73.16
8/27/2020 ND 25.25 NA 75.41
10/20/2021 ND 26.97 NA 73.69
8/9/2022 ND 28.15 NA 72.51
8/9/2023 ND 27.18 NA 73.48
5/22/1995 ND 24.17 NA 76.34
6/18/1998 ND 23.07 NA 77.44
11/15/1999 ND 26.73 NA 73.78
8/10/2001 ND 27.46 NA 73.05
11/27/2002 ND 28.55 NA 71.96
6/23/2004 ND 26.70 NA 73.81
7/18/2005 ND 25.93 NA 74.58
8/29/2006 ND 28.24 NA 72.27
8/26/2009 ND 28.40 NA 72.11
11/3/2010 ND 29.19 NA 71.32
8/30/2011 ND 29.78 NA 70.73
8/29/2012 ND 29.75 NA 70.76
8/29/2013 ND 27.60 NA 72.91
8/21/2014 ND 26.62 NA 73.89
9/1/2015 ND 27.92 NA 72.59
9/20/2016 ND 29.32 NA 71.19
9/14/2017 ND 29.06 NA 71.45
8/22/2018 ND 29.31 NA 71.20
9/3/2019 ND 26.35 NA 74.16
8/27/2020 ND 24.78 NA 75.73
10/20/2021
8/9/2022 ND 27.52 NA 72.99
8/9/2023 ND 26.50 NA 74.01
5/22/1995 ND 19.08 NA 68.47
6/18/1998 ND 17.25 NA 70.30
11/15/1999 ND 19.86 NA 67.69
8/8/2001 ND 20.69 NA 66.86
11/26/2002 ND 21.44 NA 66.11
6/23/2004 ND 19.70 NA 67.85
7/18/2005 ND 18.98 NA 68.57
8/29/2006 ND 20.70 NA 66.85
8/26/2009 ND 21.82 NA 65.73
11/3/2010 ND 23.27 NA 64.28
8/30/2011 ND 24.32 NA 63.23
8/29/2012 ND 24.08 NA 63.47
8/29/2013 ND 21.44 NA 66.11
8/21/2014 ND 20.60 NA 66.95
9/1/2015 ND 22.05 NA 65.50
9/20/2016 ND 22.22 NA 65.33
9/14/2017 ND 21.31 NA 66.24
8/22/2018 ND 21.50 NA 66.05
9/3/2019 ND 19.56 NA 67.99
8/27/2020 ND 18.15 NA 69.40
10/20/2021 ND 20.22 NA 67.33
8/9/2022 ND 21.65 NA 65.90
8/9/2023 ND 20.37 NA 67.18
Vehicle Parked on well
MW-10R 100.66
100.51MW-11
MW-10 100.66
MW-12 87.55
4 of 6
Historical Groundwater Elevation Data
Well Identification Date
TOC
Elevation(1)
(feet)
Depth to LNAPL(feet btoc)
Depth to Groundwater (1)
(feet btoc)
LNAPL Elevation (1)
(feet)
Groundwater
Elevation (1)
(feet)
Appendix A
BP # 24177
Charlotte, Mecklenburg County, North Carolina
NCDEQ Incident No. 12032
4825 South Tryon Street
11/15/1999 ND 20.65 NA 70.66
8/8/2001 ND 21.28 NA 70.03
11/27/2002 ND 21.98 NA 69.33
6/23/2004 ND 19.70 NA 71.61
7/18/2005 ND 18.65 NA 72.66
8/29/2006 ND 21.08 NA 70.23
8/26/2009 ND 22.33 NA 68.98
11/3/2010 ND 23.61 NA 67.70
8/30/2011 ND 24.80 NA 66.51
8/29/2012 ND 24.51 NA 66.80
8/29/2013 ND 20.82 NA 70.49
8/21/2014 ND 21.08 NA 70.23
9/1/2015 ND 22.80 NA 68.51
9/20/2016 ND 22.29 NA 69.02
9/14/2017 ND 21.54 NA 69.77
8/22/2018 ND 21.70 NA 69.61
9/3/2019 ND 19.82 NA 71.49
8/27/2020 ND 19.40 NA 71.91
10/20/2021 ND 20.38 NA 70.93
8/9/2022 ND 21.48 NA 69.83
8/9/2023 ND 20.45 NA 70.86
11/15/1999 ND 26.59 NA 72.60
8/8/2001 ND 27.08 NA 72.11
11/27/2002 ND 28.00 NA 71.19
6/23/2004 ND 26.80 NA 72.39
7/18/2005 ND 26.15 NA 73.04
8/29/2006 ND 28.27 NA 70.92
8/26/2009 ND 28.61 NA 70.58
11/3/2010 ND 29.88 NA 69.31
8/30/2011 ND 30.88 NA 68.31
8/29/2012 ND 30.83 NA 68.36
8/29/2013 ND 28.11 NA 71.08
8/21/2014 ND 27.23 NA 71.96
9/1/2015 ND 28.80 NA 70.39
9/20/2016 ND 29.87 NA 69.32
9/14/2017 ND 29.51 NA 69.68
8/22/2018 ND 29.30 NA 69.89
9/3/2019 ND 26.90 NA 72.29
8/27/2020 ND 25.80 NA 73.39
10/20/2021 ND 24.85 NA 74.34
8/9/2022 ND 26.70 NA 72.49
8/9/2022 ND 26.13 NA 73.06
11/15/1999 ND 14.76 NA 68.73
8/8/2001 ND 15.61 NA 67.88
8/29/2006 ND 15.30 NA 68.19
8/29/2012 ND 19.39 NA 64.10
8/29/2013 ND 16.10 NA 67.39
9/20/2016
9/14/2017
8/22/2018 ND CNL NA NM
9/3/2019 ND CNL NA NM
8/27/2020 ND CNL NA NM
10/20/2021 ND CNL NA NM
8/9/2022 ND CNL NA NM
8/9/2023 ND CNL NA NM
Well Inaccessible
Well Inaccessible
91.31MW-13
99.19MW-14
83.49MW-15
5 of 6
Historical Groundwater Elevation Data
Well Identification Date
TOC
Elevation(1)
(feet)
Depth to LNAPL(feet btoc)
Depth to Groundwater (1)
(feet btoc)
LNAPL Elevation (1)
(feet)
Groundwater
Elevation (1)
(feet)
Appendix A
BP # 24177
Charlotte, Mecklenburg County, North Carolina
NCDEQ Incident No. 12032
4825 South Tryon Street
11/19/1999 ND 21.00 NA 74.37
8/23/2001 ND 24.87 NA 70.50
6/23/2004 ND 23.50 NA 71.87
7/18/2005 ND 22.50 NA 72.87
8/29/2006 ND 24.87 NA 70.50
8/26/2009 ND 25.74 NA 69.63
11/3/2010 ND 27.09 NA 68.28
8/30/2011 ND 28.06 NA 67.31
8/29/2012 ND 27.84 NA 67.53
8/29/2013 ND 25.49 NA 69.88
8/21/2014 ND 24.71 NA 70.66
9/1/2015 ND 25.90 NA 69.47
9/20/2016 ND 25.97 NA 69.40
9/14/2017 ND 25.50 NA 69.87
8/22/2018 ND 25.95 NA 69.42
9/3/2019 ND 23.77 NA 71.60
8/27/2020 ND 22.37 NA 73.00
10/20/2021 ND 21.17 NA 74.20
8/9/2022 ND 24.40 NA 70.97
8/9/2023 ND 23.33 NA 72.04
Notes:(1) Elevations measured in feet relative to Site datum.(2) Monitoring well abandoned prior to the November 1999 groundwater sampling event.(3) Not accessible. Well covered with concrete slab since August 2006.TOC = top of casingLNAPL = light non-aqeous phase liquid
btoc = below top of casingND = not detected
CNL= Could Not Locate
NM= Not Measured
MW-16D 95.37
6 of 6
APPENDIX B
Laboratory Analytical Report and Chain-of-Custody Record – August 22, 2023
ANALYTICAL REPORT
PREPARED FOR
Attn: Hardik Patel
ARCADIS US Inc
5420 Wade Park Boulevard
Suite 350
Raleigh, North Carolina 27607
Generated 8/22/2023 12:30:01 PM
JOB DESCRIPTION
Former BP Facility #24177
JOB NUMBER
400-242000-1
See page two for job notes and contact information.
Pensacola FL 32514
3355 McLemore Drive
Eurofins Pensacola
Page 1 of 17
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Eurofins Pensacola
Eurofins Pensacola is a laboratory within Eurofins Environment Testing Southeast, LLC, a company within Eurofins Environment Testing Group of Companies
Job Notes
This report may not be reproduced except in full, and with written approval from the laboratory. The results relate only to the
samples tested. For questions please contact the Project Manager at the e-mail address or telephone number listed on this
page.
The test results in this report relate only to the samples as received by the laboratory and will meet all requirements of the
methodology, with any exceptions noted. This report shall not be reproduced except in full, without the express written
approval of the laboratory. All questions should be directed to the Eurofins Environment Testing Southeast, LLC Project
Manager.
Authorization
Generated
8/22/2023 12:30:01 PM
Authorized for release by
Leah Klingensmith, Senior Project Manager
[e-mail]
[phone]
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Table of Contents
Client: ARCADIS US Inc
Project/Site: Former BP Facility #24177
Laboratory Job ID: 400-242000-1
Page 3 of 17 Eurofins Pensacola8/22/2023
Cover Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Sample Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Case Narrative . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Client Sample Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Surrogate Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
QC Sample Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
QC Association . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Chronicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Method Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Certification Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Chain of Custody . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Receipt Checklists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
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Sample Summary
Client: ARCADIS US Inc Job ID: 400-242000-1
Project/Site: Former BP Facility #24177
Lab Sample ID Client Sample ID Matrix Collected Received
400-242000-1 MW-10R Water 08/09/23 15:15 08/15/23 08:56
400-242000-2 TRIP BLANK Water 08/09/23 12:00 08/15/23 08:56
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Case Narrative
Client: ARCADIS US Inc Job ID: 400-242000-1
Project/Site: Former BP Facility #24177
Job ID: 400-242000-1
Laboratory: Eurofins Pensacola
Narrative
Job Narrative
400-242000-1
Receipt
The samples were received on 8/15/2023 8:56 AM. Unless otherwise noted below, the samples arrived in good condition, and, where
required, properly preserved and on ice. The temperature of the cooler at receipt time was 3.7°C
GC/MS VOA
Method SM6200_B: The following sample was diluted to bring the concentration of target analytes within the calibration range: MW-10R
(400-242000-1). Elevated reporting limits (RLs) are provided.
No additional analytical or quality issues were noted, other than those described above or in the Definitions/ Glossary page.
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Definitions/Glossary
Job ID: 400-242000-1Client: ARCADIS US Inc
Project/Site: Former BP Facility #24177
Glossary
These commonly used abbreviations may or may not be present in this report.
¤Listed under the "D" column to designate that the result is reported on a dry weight basis
Abbreviation
%R Percent Recovery
CFL Contains Free Liquid
CFU Colony Forming Unit
CNF Contains No Free Liquid
DER Duplicate Error Ratio (normalized absolute difference)
Dil Fac Dilution Factor
DL Detection Limit (DoD/DOE)
DL, RA, RE, IN Indicates a Dilution, Re-analysis, Re-extraction, or additional Initial metals/anion analysis of the sample
DLC Decision Level Concentration (Radiochemistry)
EDL Estimated Detection Limit (Dioxin)
LOD Limit of Detection (DoD/DOE)
LOQ Limit of Quantitation (DoD/DOE)
MCL EPA recommended "Maximum Contaminant Level"
MDA Minimum Detectable Activity (Radiochemistry)
MDC Minimum Detectable Concentration (Radiochemistry)
MDL Method Detection Limit
ML Minimum Level (Dioxin)
MPN Most Probable Number
MQL Method Quantitation Limit
NC Not Calculated
ND Not Detected at the reporting limit (or MDL or EDL if shown)
NEG Negative / Absent
POS Positive / Present
PQL Practical Quantitation Limit
PRES Presumptive
QC Quality Control
RER Relative Error Ratio (Radiochemistry)
RL Reporting Limit or Requested Limit (Radiochemistry)
RPD Relative Percent Difference, a measure of the relative difference between two points
TEF Toxicity Equivalent Factor (Dioxin)
TEQ Toxicity Equivalent Quotient (Dioxin)
TNTC Too Numerous To Count
Eurofins Pensacola
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Client Sample Results
Job ID: 400-242000-1Client: ARCADIS US Inc
Project/Site: Former BP Facility #24177
Lab Sample ID: 400-242000-1Client Sample ID: MW-10R
Matrix: WaterDate Collected: 08/09/23 15:15
Date Received: 08/15/23 08:56
Method: SM 6200 B-2011 - Volatile Organic Compounds
RL MDL
9530 50.0 ug/L 08/18/23 18:32 50
Analyte Dil FacAnalyzedPreparedUnitDResultQualifier
Benzene
50.0 ug/L 08/18/23 18:32 504080Ethylbenzene
50.0 ug/L 08/18/23 18:32 50565Methyl tert-butyl ether
50.0 ug/L 08/18/23 18:32 50NDToluene
500 ug/L 08/18/23 18:32 50824Xylenes, Total
4-Bromofluorobenzene 93 72-130 08/18/23 18:32 50
Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery
Toluene-d8 (Surr)93 08/18/23 18:32 5064-132
Dibromofluoromethane 94 08/18/23 18:32 5075-126
Eurofins Pensacola
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Client Sample Results
Job ID: 400-242000-1Client: ARCADIS US Inc
Project/Site: Former BP Facility #24177
Lab Sample ID: 400-242000-2Client Sample ID: TRIP BLANK
Matrix: WaterDate Collected: 08/09/23 12:00
Date Received: 08/15/23 08:56
Method: SM 6200 B-2011 - Volatile Organic Compounds
RL MDL
ND 1.00 ug/L 08/18/23 14:53 1
Analyte Dil FacAnalyzedPreparedUnitDResultQualifier
Benzene
1.00 ug/L 08/18/23 14:53 1NDEthylbenzene
1.00 ug/L 08/18/23 14:53 1NDMethyl tert-butyl ether
1.00 ug/L 08/18/23 14:53 1NDToluene
10.0 ug/L 08/18/23 14:53 1NDXylenes, Total
4-Bromofluorobenzene 96 72-130 08/18/23 14:53 1
Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery
Toluene-d8 (Surr)95 08/18/23 14:53 164-132
Dibromofluoromethane 101 08/18/23 14:53 175-126
Eurofins Pensacola
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Surrogate Summary
Job ID: 400-242000-1Client: ARCADIS US Inc
Project/Site: Former BP Facility #24177
Method: 6200 B-2011 - Volatile Organic Compounds
Prep Type: Total/NAMatrix: Water
Lab Sample ID Client Sample ID (72-130)(64-132)(75-126)
BFB TOL DBFM
91 106 98400-241743-A-1 MS
Percent Surrogate Recovery (Acceptance Limits)
Matrix Spike
89 96 94400-241743-A-1 MSD Matrix Spike Duplicate
93 93 94400-242000-1 MW-10R
96 95 101400-242000-2 TRIP BLANK
92 100 96LCS 400-637483/1002 Lab Control Sample
97 96 99MB 400-637483/4 Method Blank
Surrogate Legend
BFB = 4-Bromofluorobenzene
TOL = Toluene-d8 (Surr)
DBFM = Dibromofluoromethane
Eurofins Pensacola
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QC Sample Results
Job ID: 400-242000-1Client: ARCADIS US Inc
Project/Site: Former BP Facility #24177
Method: 6200 B-2011 - Volatile Organic Compounds
Client Sample ID: Method BlankLab Sample ID: MB 400-637483/4
Matrix: Water Prep Type: Total/NA
Analysis Batch: 637483
RL MDL
Benzene ND 1.00 ug/L 08/18/23 08:52 1
MB MB
Analyte Dil FacAnalyzedPreparedDUnitResultQualifier
ND 1.00 ug/L 08/18/23 08:52 1Ethylbenzene
ND 1.00 ug/L 08/18/23 08:52 1Methyl tert-butyl ether
ND 1.00 ug/L 08/18/23 08:52 1Toluene
ND 10.0 ug/L 08/18/23 08:52 1Xylenes, Total
4-Bromofluorobenzene 97 72-130 08/18/23 08:52 1
MB MB
Surrogate Dil FacPreparedAnalyzedQualifierLimits%Recovery
96 08/18/23 08:52 1Toluene-d8 (Surr)64-132
99 08/18/23 08:52 1Dibromofluoromethane75-126
Client Sample ID: Lab Control SampleLab Sample ID: LCS 400-637483/1002
Matrix: Water Prep Type: Total/NA
Analysis Batch: 637483
Benzene 50.0 50.79 ug/L 102 70-130
Analyte
LCS LCS
DUnitResultQualifier %Rec
Spike
Added
%Rec
Limits
Ethylbenzene 50.0 56.00 ug/L 112 70-130
Methyl tert-butyl ether 50.0 46.90 ug/L 94 66-130
Toluene 50.0 58.18 ug/L 116 70-130
Xylenes, Total 100 108.1 ug/L 108 70-130
4-Bromofluorobenzene 72 -130
Surrogate
92
LCS LCS
Qualifier Limits%Recovery
100Toluene-d8 (Surr)64 -132
96Dibromofluoromethane 75 -126
Client Sample ID: Matrix SpikeLab Sample ID: 400-241743-A-1 MS
Matrix: Water Prep Type: Total/NA
Analysis Batch: 637483
Benzene ND 50.0 46.52 ug/L 93 56-142
Analyte
MS MS
DUnitResultQualifier %Rec
Spike
Added
Sample
Result
Sample
Qualifier
%Rec
Limits
Ethylbenzene ND 50.0 49.28 ug/L 99 58-131
Methyl tert-butyl ether ND 50.0 42.73 ug/L 85 59-137
Toluene ND 50.0 52.73 ug/L 105 65-130
Xylenes, Total ND 100 95.31 ug/L 95 59-130
4-Bromofluorobenzene 72 -130
Surrogate
91
MS MS
Qualifier Limits%Recovery
106Toluene-d8 (Surr)64 -132
98Dibromofluoromethane 75 -126
Eurofins Pensacola
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QC Sample Results
Job ID: 400-242000-1Client: ARCADIS US Inc
Project/Site: Former BP Facility #24177
Method: 6200 B-2011 - Volatile Organic Compounds (Continued)
Client Sample ID: Matrix Spike DuplicateLab Sample ID: 400-241743-A-1 MSD
Matrix: Water Prep Type: Total/NA
Analysis Batch: 637483
Benzene ND 50.0 49.95 ug/L 100 56-142 7 30
Analyte
MSD MSD
DUnitResultQualifier %Rec
Spike
Added
Sample
Result
Sample
Qualifier
%Rec
Limits LimitRPD
RPD
Ethylbenzene ND 50.0 53.16 ug/L 106 58-131 8 30
Methyl tert-butyl ether ND 50.0 49.00 ug/L 98 59-137 14 30
Toluene ND 50.0 52.84 ug/L 106 65-130 0 30
Xylenes, Total ND 100 103.4 ug/L 103 59-130 8 30
4-Bromofluorobenzene 72 -130
Surrogate
89
MSD MSD
Qualifier Limits%Recovery
96Toluene-d8 (Surr)64 -132
94Dibromofluoromethane 75 -126
Eurofins Pensacola
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QC Association Summary
Job ID: 400-242000-1Client: ARCADIS US Inc
Project/Site: Former BP Facility #24177
GC/MS VOA
Analysis Batch: 637483
Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch
Water 6200 B-2011400-242000-1 MW-10R Total/NA
Water 6200 B-2011400-242000-2 TRIP BLANK Total/NA
Water 6200 B-2011MB 400-637483/4 Method Blank Total/NA
Water 6200 B-2011LCS 400-637483/1002 Lab Control Sample Total/NA
Water 6200 B-2011400-241743-A-1 MS Matrix Spike Total/NA
Water 6200 B-2011400-241743-A-1 MSD Matrix Spike Duplicate Total/NA
Eurofins Pensacola
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Lab Chronicle
Client: ARCADIS US Inc Job ID: 400-242000-1
Project/Site: Former BP Facility #24177
Client Sample ID: MW-10R Lab Sample ID: 400-242000-1
Matrix: WaterDate Collected: 08/09/23 15:15
Date Received: 08/15/23 08:56
Analysis 6200 B-2011 WPD08/18/23 18:3250 EET PEN637483
Type
Batch
Method
Batch
Prep Type LabAnalystRun
Prepared
or Analyzed
Initial
Amount Amount
Final Batch
NumberFactor
Dil
Total/NA 5 mL 5 mL
Client Sample ID: TRIP BLANK Lab Sample ID: 400-242000-2
Matrix: WaterDate Collected: 08/09/23 12:00
Date Received: 08/15/23 08:56
Analysis 6200 B-2011 WPD08/18/23 14:531 EET PEN637483
Type
Batch
Method
Batch
Prep Type LabAnalystRun
Prepared
or Analyzed
Initial
Amount Amount
Final Batch
NumberFactor
Dil
Total/NA 5 mL 5 mL
Client Sample ID: Method Blank Lab Sample ID: MB 400-637483/4
Matrix: WaterDate Collected: N/A
Date Received: N/A
Analysis 6200 B-2011 WPD08/18/23 08:521 EET PEN637483
Type
Batch
Method
Batch
Prep Type LabAnalystRun
Prepared
or Analyzed
Initial
Amount Amount
Final Batch
NumberFactor
Dil
Total/NA 5 mL 5 mL
Client Sample ID: Lab Control Sample Lab Sample ID: LCS 400-637483/1002
Matrix: WaterDate Collected: N/A
Date Received: N/A
Analysis 6200 B-2011 WPD08/18/23 07:581 EET PEN637483
Type
Batch
Method
Batch
Prep Type LabAnalystRun
Prepared
or Analyzed
Initial
Amount Amount
Final Batch
NumberFactor
Dil
Total/NA 5 mL 5 mL
Client Sample ID: Matrix Spike Lab Sample ID: 400-241743-A-1 MS
Matrix: WaterDate Collected: N/A
Date Received: N/A
Analysis 6200 B-2011 WPD08/18/23 12:531 EET PEN637483
Type
Batch
Method
Batch
Prep Type LabAnalystRun
Prepared
or Analyzed
Initial
Amount Amount
Final Batch
NumberFactor
Dil
Total/NA 5 mL 5 mL
Client Sample ID: Matrix Spike Duplicate Lab Sample ID: 400-241743-A-1 MSD
Matrix: WaterDate Collected: N/A
Date Received: N/A
Analysis 6200 B-2011 WPD08/18/23 13:181 EET PEN637483
Type
Batch
Method
Batch
Prep Type LabAnalystRun
Prepared
or Analyzed
Initial
Amount Amount
Final Batch
NumberFactor
Dil
Total/NA 5 mL 5 mL
Laboratory References:
EET PEN = Eurofins Pensacola, 3355 McLemore Drive, Pensacola, FL 32514, TEL [phone]
Eurofins Pensacola
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Method Summary
Job ID: 400-242000-1Client: ARCADIS US Inc
Project/Site: Former BP Facility #24177
Method Method Description LaboratoryProtocol
SM6200 B-2011 Volatile Organic Compounds EET PEN
SW8465030BPurge and Trap EET PEN
Protocol References:
SM = "Standard Methods For The Examination Of Water And Wastewater"
SW846 = "Test Methods For Evaluating Solid Waste, Physical/Chemical Methods", Third Edition, November 1986 And Its Updates.
Laboratory References:
EET PEN = Eurofins Pensacola, 3355 McLemore Drive, Pensacola, FL 32514, TEL [phone]
Eurofins Pensacola
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Accreditation/Certification Summary
Client: ARCADIS US Inc Job ID: 400-242000-1
Project/Site: Former BP Facility #24177
Laboratory: Eurofins Pensacola
The accreditations/certifications listed below are applicable to this report.
Authority Program Identification Number Expiration Date
North Carolina (WW/SW)State 314 12-31-23
Eurofins Pensacola
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Login Sample Receipt Checklist
Client: ARCADIS US Inc Job Number: 400-242000-1
Login Number: 242000
Question Answer Comment
Creator: Earnest, Tamantha
List Source: Eurofins Pensacola
List Number: 1
N/ARadioactivity wasn't checked or is </= background as measured by a survey
meter.
N/AThe cooler's custody seal, if present, is intact.
N/ASample custody seals, if present, are intact.
TrueThe cooler or samples do not appear to have been compromised or
tampered with.
TrueSamples were received on ice.
TrueCooler Temperature is acceptable.
TrueCooler Temperature is recorded.3.7°c ir11
TrueCOC is present.
TrueCOC is filled out in ink and legible.
TrueCOC is filled out with all pertinent information.
TrueIs the Field Sampler's name present on COC?
TrueThere are no discrepancies between the containers received and the COC.
TrueSamples are received within Holding Time (excluding tests with immediate
HTs)
TrueSample containers have legible labels.
TrueContainers are not broken or leaking.
TrueSample collection date/times are provided.
TrueAppropriate sample containers are used.
TrueSample bottles are completely filled.
N/ASample Preservation Verified.
TrueThere is sufficient vol. for all requested analyses, incl. any requested
MS/MSDs
N/AContainers requiring zero headspace have no headspace or bubble is
<6mm (1/4").
TrueMultiphasic samples are not present.
TrueSamples do not require splitting or compositing.
N/AResidual Chlorine Checked.
Eurofins Pensacola
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APPENDIX C
Historical Groundwater Analytical Data
BP # 24177
4825 South Tryon Street
Charlotte, Mecklenburg County, North Carolina
NCDEQ Incident No. 12032
Well Identification Date Benzene Toluene Ethylbenzene Xylenes
(Total)MTBE
(5,000 µg/l)(260,000 µg/l)(84,500 µg/l)(85,500 µg/l)(20,000 µg/l)
4/14/1994 13,000 1,300 1,000 4,100 11,000
6/19/1998 15,000 3,200 1,400 5,500 15,000
11/17/1999 19,000 4,600 2,200 8,800 21,000
8/9/2001 17,000 4,500 2,400 10,000 15,000
11/26/2002 11,800 4,710 1,420 9,190 12,000
6/24/2004 10,300 1,730 2,340 8,990 7,030
7/18/2005 9,820 1,620 2,220 7,690 5,790
8/29/2006 10,600 2,450 2,410 10,400 6,470
8/16/2007 10,700 2,400 2,610 11,700 5,570
8/26/2009 18,100 5,420 4,740 25,300 10,700
11/3/2010 8,470 976 J 2,460 9,590 3,440
8/30/2011 8,040 2,200 1,730 8,600 2,760
8/29/2012 7,790 1,370 2,900 11,000 2,380
8/29/2013 8,310 1,050 3,830 12,600 2,320
8/21/2014 7,180 954 3,430 J 9,900 1,550 J
9/1/2015 6,520 1,010 3,780 10,200 1,180
9/20/2016 5,450 72.3 3,130 5,220 1,060
9/14/2017 3,210 11.2 1,780 1,180 981
8/22/2018 2,850 C 22.4 C 2,490 C 906 C 620 C
4/14/1994 240 < 500 < 100 < 200 5,900
6/19/1998 5.0 < 5.0 < 1.0 < 2.0 2,000
11/16/1999 < 10 < 50 < 10 < 20 860
8/9/2001 < 5.0 < 5.0 < 5.0 < 5.0 2,400
11/27/2002 0.58 J < 0.5 < 0.5 < 1.0 3,300 J
6/24/2004 < 5.0 < 5.0 < 5.0 < 10 580
7/19/2005 0.57 J < 0.5 < 0.5 < 1.0 382
8/29/2006 < 2.5 < 2.5 < 2.5 < 5.0 396
11/3/2010 < 2.2 < 2.2 < 2.2 < 6.4 298
8/29/2012 < 0.65 < 0.64 < 0.73 < 1.5 142
4/14/1994 20,000 20,000 1,800 7,200 24,000
6/19/1998 1,500 2,600 1,300 3,600 1,700
11/17/1999 520 160 220 630 1,000
8/23/2001 1,300 < 50 770 130 1,300
11/26/2002 2,970 249 995 956 2,850
6/23/2004 1,990 87.1 881 702 1,550
7/19/2005 1,550 50.4 911 686 1,200
8/29/2006 1,310 J 66.1 902 J 965 J 488 J
11/3/2010 754 < 39.9 U 1,390 957 218
8/21/2014 162 21 598 417 208
9/1/2015 402 44.4 1,490 928 77.8
9/20/2016 245 21.0 1,200 627 70.0
4/14/1994 2.0 < 5.0 < 1.0 2.0 51
6/19/1998 10 < 5.0 1.0 4.0 1,200
Appendix C
Historical Groundwater Analytical Data
NCDEQ GCLs
MW-2
MW-1R
MW-1
MW-3
MW-3i
Page 1 of 4
BP # 24177
4825 South Tryon Street
Charlotte, Mecklenburg County, North Carolina
NCDEQ Incident No. 12032
Well Identification Date Benzene Toluene Ethylbenzene Xylenes
(Total)MTBE
(5,000 µg/l)(260,000 µg/l)(84,500 µg/l)(85,500 µg/l)(20,000 µg/l)
Appendix C
Historical Groundwater Analytical Data
NCDEQ GCLs
4/14/1994 3.0 < 5.0 < 1.0 < 2.0 < 5.0
6/19/1998 < 1.0 < 5.0 < 1.0 < 2.0 < 5.0
4/14/1994 6.0 < 5.0 < 1.0 3.0 < 5.0
6/19/1998 2.0 < 5.0 < 1.0 2.0 < 5.0
11/16/1999 < 1.0 < 5.0 < 1.0 < 2.0 < 5.0
8/9/2001 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0
11/27/2002 < 0.5 < 0.5 < 0.5 < 1.0 < 0.5
6/24/2004 < 0.5 < 0.5 < 0.5 < 1.0 < 0.5
7/19/2005 < 0.5 < 0.5 < 0.5 < 1.0 < 0.5
8/29/2012 < 0.13 < 0.13 < 0.15 < 0.3 < 0.13
7/29/1994 < 1.0 < 5.0 < 1.0 < 2.0 < 5.0
6/19/1998 2.0 < 5.0 < 1.0 7.0 < 5.0
11/16/1999 1.0 < 5.0 < 1.0 3.0 < 5.0
8/10/2001 1.1 1.2 < 1.0 1.5 < 1.0
11/27/2002 < 0.5 < 0.5 < 0.5 < 1.0 < 0.5
7/19/2005 < 0.5 < 0.5 < 0.5 < 1.0 < 0.5
11/3/2010 < 0.11 < 0.11 < 0.11 < 0.32 < 0.12
7/29/1994 2,000 150 79 1,000 < 50
6/19/1998 4,200 < 500 780 1,200 < 500
11/16/1999 2,300 < 500 210 360 610
8/9/2001 440 < 50 < 50 < 50 3,300
6/23/2004 154 < 10 50.1 41.6 J 3,290
7/19/2005 126 < 5 48.3 29.4 J 3,320 J
8/29/2006 47.2 J < 25 < 25 < 50 4,240
11/3/2010 < 55 < 55 < 55 < 160 5,660
8/30/2011 20.6 J < 13 20 J < 30 5,900
8/29/2012 8.3 0.15 J 7.5 1.9 3,850
8/29/2013 7.5 J 8.9 J 8.7 J < 11 2,410
7/29/1994 < 1.0 < 5.0 < 1.0 < 2.0 < 5.0
6/19/1998 < 1.0 < 5.0 < 1.0 < 2.0 < 5.0
11/16/1999 < 1.0 < 5.0 < 1.0 < 2.0 < 5.0
8/9/2001 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0
11/27/2002 < 0.5 < 0.5 < 0.5 < 1.0 < 0.5
6/24/2004 < 0.5 < 0.5 < 0.5 < 1 .0 < 0.5
7/19/2005 < 0.5 < 0.5 < 0.5 < 1.0 < 0.5
11/3/2010 < 0.11 < 0.11 < 0.11 < 0.32 < 0.12
MW-9 7/29/1994 1,100 170 180 2,000 < 50
MW-4
MW-7
MW-5
MW-8
MW-6
Page 2 of 4
BP # 24177
4825 South Tryon Street
Charlotte, Mecklenburg County, North Carolina
NCDEQ Incident No. 12032
Well Identification Date Benzene Toluene Ethylbenzene Xylenes
(Total)MTBE
(5,000 µg/l)(260,000 µg/l)(84,500 µg/l)(85,500 µg/l)(20,000 µg/l)
Appendix C
Historical Groundwater Analytical Data
NCDEQ GCLs
2/15/1995 14,000 21,000 2,400 11,000 < 5,000
6/19/1998 20,000 30,000 2,900 13,000 11,000
11/17/1999 17,000 22,000 2,300 11,000 6,500
8/23/2001 18,000 34,000 3,500 16,000 8,700
11/26/2002 20,200 31,300 3,790 18,900 13,700
6/24/2004 18,000 26,600 3,090 15,500 12,800
7/18/2005 15,200 25,800 J 3,080 15,500 11,100
8/29/2006 17,500 19,900 4,070 19,800 11,900
8/16/2007 195 J 2,900 J 446 J 7,250 J 350
8/26/2009 14,600 6,020 2,730 12,400 8,460
8/29/2013 13,100 6,500 3,400 17,200 3,390
8/21/2014 11,500 J 2,590 J 2,740 J 14,000 J 2,900 J
9/2/2015 10,000 501 3,080 13,200 2,510
9/20/2016 6,950 336 3,280 7,290 2,640
9/14/2017 12,600 164 3,380 11,400 3,200
8/22/2018 9,890 C 133 C 3,570 C 11,500 C 1,760 C
10/11/2019 7,920 <50 1,480 2,890 1,690
8/27/2020 7,390 <100 2,310 2,860 1,320
10/20/2021 9,000 <50 2,620 2,480 1,340
8/9/2022 11,000 <50 3,950 2,020 875
8/9/2023 9,530 <50 4,080 824 565
2/15/1995 2.0 < 5.0 < 1.0 5.0 < 5.0
6/19/1998 31 13 9.0 17 < 5.0
11/17/1999 1.0 < 5.0 < 1.0 < 2.0 < 5.0
8/10/2001 1.3 2.7 < 1.0 2.1 < 1.0
11/27/2002 < 0.5 < 0.5 < 0.5 < 1.0 < 0.5
6/24/2004 < 0.5 < 0.5 < 0.5 < 1.0 < 0.5
7/19/2005 < 0.5 < 0.5 < 0.5 < 1.0 < 0.5
8/29/2013 < 0.10 < 0.10 < 0.10 < 0.22 < 0.10
4/25/1995 3,600 < 50 < 10 1,500 < 50
6/19/1998 2,700 < 500 37 660 < 500
11/16/1999 3,300 < 50 28 200 < 50
8/9/2001 2,300 < 50 < 50 55 < 50
11/26/2002 2,130 12.2 17.8 32.4 5.7
6/24/2004 502 J < 2.5 8.8 7.8 J < 20
7/18/2005 175 18.5 J 10.2 J 23.4 J < 20
8/29/2006 65.1 < 0.5 < 0.5 2.4 5.1
11/3/2010 3.4 < 0.31 U 0.32 J < 0.32 0.53
11/16/1999 < 1.0 < 5.0 < 1.0 < 2.0 < 5.0
8/9/2001 4.0 < 1.0 < 1.0 < 1.0 < 1.0
11/27/2002 < 0.5 < 0.5 < 0.5 < 1.0 < 0.5
6/23/2004 < 0.5 < 0.5 < 0.5 < 1.0 < 0.5
7/19/2005 < 0.5 < 0.5 < 0.5 < 1.0 < 0.5
11/3/2010 < 0.11 < 0.11 < 0.11 < 0.32 < 0.12
MW-10R
MW-11
MW-12
MW-10
MW-13
Page 3 of 4
BP # 24177
4825 South Tryon Street
Charlotte, Mecklenburg County, North Carolina
NCDEQ Incident No. 12032
Well Identification Date Benzene Toluene Ethylbenzene Xylenes
(Total)MTBE
(5,000 µg/l)(260,000 µg/l)(84,500 µg/l)(85,500 µg/l)(20,000 µg/l)
Appendix C
Historical Groundwater Analytical Data
NCDEQ GCLs
11/17/1999 < 1.0 < 5.0 < 1.0 < 2.0 < 5.0
8/9/2001 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0
11/27/2002 < 0.5 < 0.5 < 0.5 < 1.0 < 0.5
6/24/2004 < 0.5 < 0.5 < 0.5 < 1.0 < 0.5
7/18/2005 1.7 4.0 1.1 4.4 < 0.5
11/3/2010 < 0.11 < 0.11 < 0.11 < 0.32 < 0.12
11/16/1999 6.0 < 5.0 < 1.0 < 2.0 76
8/9/2001 < 1.0 < 1.0 < 1.0 < 1.0 24
8/29/2006 < 0.5 < 0.5 < 0.5 < 1.0 2.9
8/29/2012 < 0.13 < 0.13 < 0.15 < 0.3 0.58
11/19/1999 11 < 5.0 < 1.0 < 2.0 4,600
8/23/2001 < 100 < 100 < 100 < 100 3,200
6/24/2004 < 25 < 25 < 25 < 50 2,280
7/18/2005 < 0.5 6.8 3.6 3.6 1,720
8/29/2006 < 10 < 10 < 10 < 20 2,040
11/3/2010 0.57 < 0.11 < 0.11 < 0.32 1,500
8/30/2011 < 2.6 < 2.6 < 2.9 < 6.0 1,370
8/29/2012 < 6.5 < 6.4 < 7.3 < 15 1,530
8/29/2013 < 0.10 < 0.10 < 0.10 < 0.22 0.64
8/21/2014 < 5.0 UJ < 5.0 UJ < 5.0 UJ < 10 UJ 1,620 J
9/2/2015 < 8.6 < 8.3 < 7.6 < 22 1,310
9/20/2016 2.76 15.0 7.15 34.4 1,870
Notes:
MTBE = methyl tert-butyl ether
NC GCLs = North Carolina Gross Contamination Levels
µg/l = micrograms per literBold indicates a concentration above the NC DEQ GCLsJ = estimated value
< = not detected at the specified detection limit
U = not present above the associated level; blank contamination exists
UJ = Not detected and the limit is estimated
C = Samples Received at the Laboratory outside the required temperature criteria
MW-16D
MW-14
MW-15
Page 4 of 4

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