FA-3954_29878_CA_FRP_20231016

Speedway, LLC
500 Speedway Drive
Enon, Ohio 45323
Phone: [phone]

Light Non-Aqueous
Phase Liquid
Evaluation Report
Speedway Store No. 7980
810 East Cumberland Street
Dunn, Harnett County, North Carolina
Incident No. 29878
Project No. 60690448
October 16, 2023

AECOM ii

Speedway Store No. 7980-Dunn, NC
LNAPL Evaluation Report October 2023

Quality Information
Prepared by Reviewed by Reviewed by

Angie Sastoque Ardila
Environmental Engineer I
[e-mail]
Nicole Long
Environmental Project Manager
[e-mail]
Marie Treiber
Regional Senior Project Manager
[e-mail]
Prepared for:
Speedway, LLC
500 Speedway Drive
Enon, Ohio 45323
Phone: [phone]

Prepared by:
AECOM Technical Services of North Carolina, Inc.
5438 Wade Park Blvd, Suite 200
Raleigh, North Carolina 27607
Phone: [phone]
aecom.com

Copyright © 2023 by AECOM
All rights reserved. No part of this copyrighted work may be reproduced, distributed, or transmitted in any form or by
any means without the prior written permission of AECOM.
AECOM iii

Speedway Store No. 7980-Dunn, NC
LNAPL Evaluation Report October 2023

Statements And Certification Page
I, Brett G. Schaefer, a Licensed Engineer for AECOM Technical Services of North Carolina, Inc., do certify that the
information contained in this report is correct and accurate to the best of my knowledge.

_________________________________
Brett G. Schaefer, PE
AECOM Technical Services of North Carolina, Inc.
AECOM Technical Services of North Carolina, Inc. is licensed to practice engineering in North Carolina. The certification
number of the company or corporation is F-0458.
AECOM iv

Speedway Store No. 7980-Dunn, NC
LNAPL Evaluation Report October 2023

Table of Contents
Executive Summary ....................................................................................................................................................... 1
1 Introduction ...................................................................................................................................................... 1-1
2 Site Background Information ............................................................................................................................ 2-1
3 Field Activities .................................................................................................................................................. 3-1
3.1 Gauging Activities ................................................................................................................................. 3-1
3.2 LNAPL Recovery Test ........................................................................................................................... 3-1
4 Field Activity Results ........................................................................................................................................ 4-1
4.1 Site Geology/Hydrogeology .................................................................................................................. 4-1
4.2 LNAPL Recovery Test Results .............................................................................................................. 4-1
5 Discussion ....................................................................................................................................................... 5-1
6 References ...................................................................................................................................................... 6-1

Figures
Figure 1: Site Location Map
Figure 2: Site Map
Figure 3: LNAPL Delineation Map, August 1, 2023
Figure 4: MW-10R - LNAPL and Groundwater Elevations over Time
Tables
Table 1: Well Construction and Gauging Information
Table 2: LNAPL Recovery Rate Data

AECOM ES-1

Speedway Store No. 7980-Dunn, NC
LNAPL Evaluation Report October 2023

Executive Summary
As required by the North Carolina Department of Environmental Quality (NCDEQ), AECOM Technical Services of
North Carolina, Inc. (AECOM), on behalf of Speedway, LLC (Speedway), has prepared this Light Non-Aqueous
Phase Liquid (LNAPL) Evaluation Report for Speedway Store No. 7980 (Site), located at 810 East Cumberland
Street, Dunn, Harnett County, North Carolina. The Site is currently owned by Wilco Hess and operates as an active
Speedway gas station and convenience store.
During Phase II Environmental Site Assessment (ESA) activities conducted in September 2013, a release to soil and
groundwater was identified at the Site. Incident Number (No.) 29878 was opened for the Site.

On October 2, 2022, AECOM personnel collected five soil samples during line and dispenser closure activities during
a North Carolina Department of Transportation (NCDOT) right-of-way expansion project. Three samples were
collected in the vicinity of product line piping (PL-1, PL-2, and PL-3) and one at each of the two dispensers (DI-1 and
DI-2). Based on laboratory analysis, total petroleum hydrocarbons (TPH) diesel-range organics (DRO) were detected
at concentrations exceeding laboratory reporting limits in soil samples PL-1, PL-2, and PL-3 but below the Soil to
Groundwater Maximum Soil Contaminant Concentration (MSCC) or the North Carolina Department of Environmental
Quality (NCDEQ) action level. TPH gasoline-range organics (GRO) were detected at concentrations above the
NCDEQ action level.

On September 29, 2022, AECOM performed a groundwater monitoring event at the Site. During gauging, monitoring
well MW-3 was found to have been destroyed, and LNAPL was encountered in monitoring well MW-10R. Monitoring
wells MW-1R, MW-4, MW-5R, and MW-11 were sampled for volatile organic compounds (VOCs). Petroleum
compounds were detected in the groundwater samples but did not exceed gross contamination levels (GCLs). On
April 7, 2023, AECOM gauged monitoring well MW-10R to confirm the presence of LNAPL and removed LNAPL with
a hand bailer. After removal, a sorbant sock was installed in the well. LNAPL was not reported in any other wells.

During the current reporting period, AECOM gauged all on-site monitoring wells and performed LNAPL bail-down
testing on monitoring well MW-10R. During gauging activities, LNAPL was only observed at monitoring well MW-10R.
The well exhibited an apparent LNAPL thickness of 0.42 feet. Prior to testing, LNAPL was removed from monitoring
well MW-10R. LNAPL was not observed at the beginning of the test. However, LNAPL started to recharge after the
first 11 minutes of the test. LNAPL reached an apparent thickness of 0.36 feet after 5 hours, indicating that a reservoir
of product remains in the vicinity of the well.
Based on this information, AECOM, on behalf of Speedway, recommends that LNAPL removal should continue at the
Site in the form of an aggressive fluid vapor recovery (AFVR) event on monitoring well MW-10-R. The risk
classification should remain as an intermediate risk site until the LNAPL is removed and the contaminant
concentrations measured in monitoring well MW-10R are reduced to below the GCLs. Monitoring well MW-3 should
be replaced where it was found to have been destroyed. Semi-annual groundwater sampling should continue to
monitor plume migration.
AECOM 1-1

Speedway Store No. 7980-Dunn, NC
LNAPL Evaluation Report October 2023

1 Introduction
As required by the North Carolina Department of Environmental Quality, AECOM, on behalf of Speedway, has
prepared this Groundwater Monitoring Report for Speedway Store No. 7980 (Site), located at 810 East Cumberland
Street, Dunn, Harnett County, North Carolina (Figure 1 and 2). The Site is currently owned by Wilco Hess and is
operated by Speedway, LLC as a petroleum retail facility and convenience store.

This report documents activities conducted on August 1, 2023, which included gauging of all on-site monitoring wells
and LNAPL bail-down testing on monitoring well MW-10R.
AECOM 2-1

Speedway Store No. 7980-Dunn, NC
LNAPL Evaluation Report October 2023

2 Site Background Information
The following sections provide site background and contact information.
2.1 Site Identification
Date of Incident Report: October 16, 2013
Facility ID: 00-0-0000010379 Incident Number: 29878
Site Rank: Intermediate Risk
Site Name: Speedway Store No. 7980
Site Street Address: 810 East Cumberland Street
City/Town: Dunn Zip Code: 28334 County: Harnett
Description of Geographical Data Point (e.g., dispenser): dispenser island canopy
Location Method (global positioning system, topographical map, other): Google Earth
Latitude (decimal degrees): 35.3024660° N, Longitude (decimal degrees): -78.6029960° W
2.2 Contact Information
UST Owner: Speedway LLC.
Address: PO Box 1500
Springfield, Ohio (OH) Telephone: [phone]
UST Operator: Speedway LLC.
Address: PO Box 1500, Springfield, OH Telephone: [phone]
Property Owner: Wilco Hess, LLC
Address: 539 S Main Street, Findlay, OH Telephone: NA
Property Occupant: Speedway LLC
Address: PO Box 1500, Springfield, OH Telephone: [phone]
Consultant/Contractor: AECOM
Address: 5438 Wade Park Boulevard, Suite 200
Raleigh, NC Telephone: [phone]
Analytical Laboratory: Pace Analytical
State Certification No. 5342
Address: 9800 Kincey Avenue # 100,
Huntersville, NC 28078 Telephone: [phone]

AECOM 3-1

Speedway Store No. 7980-Dunn, NC
LNAPL Evaluation Report October 2023

3 Field Activities
Field activities were conducted at the Site on August 1, 2023. The field activities are discussed below.
3.1 Gauging Activities
On August 1, 2023, on-site monitoring wells were gauged using an oil/water interface probe. Recent and historical
groundwater elevation measurements are summarized in Table 1.
3.2 LNAPL Recovery Test
A bail-down test was conducted in monitoring well MW-10R on August 1, 2023. The test aimed to determine the
recovery rate of LNAPL in the well once it was removed.
Prior to testing, depths to water and LNAPL were measured using an oil/water interface probe, and LNAPL was
removed from monitoring well MW-10R using a peristaltic pump. The liquid from the test was transferred into a 55-
gallon drum stored on-site. The measurements were collected at specified intervals. The estimated recovery rate is
0.0012 feet per second in monitoring well MW-10R. During recharge, depth to water and LNAPL measurements
were collected at specific intervals. LNAPL recovery rate data is summarized in Table 2.
AECOM 4-1

Speedway Store No. 7980-Dunn, NC
LNAPL Evaluation Report October 2023

4 Field Activity Results
The following sections provide information on the gauging and testing activities conducted at the Site.
4.1 Site Geology/Hydrogeology
Site geology was evaluated based on historical and current investigations. The Site is located within the Cretaceous-
aged Middendorf Formation of the Coastal Plain of North Carolina. The Site is generally underlain by sand,
sandstone and mudstone, pale gray to gray in color with orange casts, clay balls and iron-cemented concretions.
During past Geological Resources, Inc. (GRI) investigations, the soil at the Site has been a mix of gray and red clay
and gray and tan medium-size sand.
Groundwater elevations range from 94.10 feet bgs in MW-8 to 92.73 feet bgs in MW-10R. LNAPL was observed in
monitoring well MW-10R at an apparent thickness of 0.42 feet.
Recent and historical groundwater elevations are summarized in Table 1, and an LNAPL delineation map is included
as Figure 3.
The hydraulic gradient, as measured from monitoring well MW-10R to MW-8, is 0.006 feet-per-foot (ft/ft) [(94.10-
92.73)/230.85].

Hydraulic Gradient = Δ𝑦
Δ𝑥

Δy = Change in groundwater elevation from MW-10R to MW-8
Δx = Distance between MW-10R and MW-8

4.2 LNAPL Recovery Test Results
A bail-down test was on conducted in monitoring well MW-10R on August 1, 2023. The well was gauged prior to
testing; the well exhibited an initial LNAPL thickness of 0.42 feet. During LNAPL removal, a bailer was lowered into
the well, and the product was visually assessed for general appearance. The LNAPL appeared dark brown.
Approximately 1.25 gallons of LNAPL and 0.25 gallons of water were removed from monitoring well MW-10R at a
constant rate prior to the start of the test. The LNAPL and water mixture was stored in an on-site labeled drum. After
LNAPL removal, the groundwater elevation was calculated at 92.33 feet bgs.
The bail-down test lasted approximately 5 hours (311 minutes). LNAPL was not observed during the first 11 minutes
of the test. LNAPL thickness steadily increased from 0.01 feet to 0.17 feet in the next 30 minutes of the test. At the
end of the first hour and during the second hour, LNAPL thickness fluctuated between 0.10 feet and 0.15 feet. LNAPL
thickness increased from 0.21 feet to 0.36 feet during the last 3 hours of the test. The estimated recovery rate is
0.0012 feet per minute [0.36/311] in monitoring well MW-10R.

Estimated recovery rate = LNAPL thickness (ft)
Elapsed time (min)

LNAPL recovery rate data is summarized in Table 2. A graph of the LNAPL recovery test is presented as Figure 4.
AECOM 5-1

Speedway Store No. 7980-Dunn, NC
LNAPL Evaluation Report October 2023

5 Discussion
Based on the results of the field activities conducted at the Site on August 1, 2023:
− LNAPL was observed in monitoring well MW-10R at an apparent thickness of 0.42 feet.
− Approximately 1.25 gallons of LNAPL and 0.25 gallons of water were removed from monitoring well MW-10R
prior to the start of the test.
− The estimated recovery rate is 0.0012 feet per minute in monitoring well MW-10R.
− The results of the LNAPL recovery rate test conducted in monitoring well MW-10R indicate that a reservoir of
product remains in the vicinity of monitoring well MW-10R.
Based on this information, AECOM, on behalf of Speedway, recommends that LNAPL removal should continue at the
Site in the form of an aggressive fluid vapor recovery (AFVR) event on monitoring well MW-10R. The risk
classification should remain as an intermediate risk site until the LNAPL is removed and the contaminant
concentrations measured in monitoring well MW-10R are reduced to below the GCLs. Monitoring well MW-3 should
be replaced where it was found to have been destroyed. Semi-annual groundwater sampling should continue to
monitor plume migration.
AECOM 6-1

Speedway Store No. 7980-Dunn, NC
LNAPL Evaluation Report October 2023

6 References
Geological Resources, Inc., 2022. Groundwater Monitoring Report. February 22, 2022.

Figures

2,0002,000
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SITE LOCATION
Speedway Store #7980
810 East Cumberland Street
Dunn, Harnett County, NC
E. ANDREWSI. LAZARNOVEMBER 2022 60690448
FIGURE 1SITE LOCATION MAPSpeedway LLC.
Source: Topo USGS 7.5 Minute Topographic Map
Quadrangle: Dunn , NC
Copyright: 2022 United States Geological Survet
DATE:DRAWN BY:REVIEWED BY:PROJECT NO.:Fil
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FIGURE 2
LEGEND
NOTE: ALL MAP FEATURES ARE APPROXIMATE
IN SCALE AND LOCATION.
Speedway Store #7980
810 East Cumberland Street
Dunn, Harnett County, NC
60690448
Speedway LLC.
Property Boundary
Product Dispenser
Underground Storage Tank
Underground Storm Sewer Line
Underground Electric Line
Observation Well
Recovery Well
Type II Monitoring Well
Type III Monitoring Well
Destroyed Monitoring Well
Underground Natural Gas Line
Product Line
Utility Pole / Power Pole
Light Post / Traffic Light
Excavation Area Boundary
Former Product Dispenser
Former Product Line
SITE MAP
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D. OLTEANUSEPTEMBER 2023 N. LONG
FIGURE 3
LEGEND
NOTE: ALL MAP FEATURES ARE APPROXIMATE
IN SCALE AND LOCATION.
Speedway Store #7980
810 East Cumberland Street
Dunn, Harnett County, NC
60690448
Speedway LLC.
Property Boundary
Product Dispenser
Underground Storage Tank
Underground Storm Sewer Line
Underground Electric Line
Observation Well
Recovery Well
Type II Monitoring Well
Type III Monitoring Well
Destroyed Monitoring Well
Underground Natural Gas Line
Product Line
Utility Pole / Power Pole
Light Post / Traffic Light
Excavation Area Boundary
Former Product Dispenser
Former Product Line
LNAPL DELINEATION MAP
AUGUST 1, 2023
0.42
ND
Apparent LNAPL Thickness (Ft)
Not Detected
Estimated LNAPL Delineation
92.0
92.1
92.2
92.3
92.4
92.5
92.6
92.7
92.8
92.9
93.0
93.1
93.2
93.3
93.4
93.5
0 30 60 90 120 150 180 210 240 270 300 330
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Time Elapsed (minutes)
Figure 4: MW-10R -LNAPL and Groundwater Elevations over Time
LNAPL Elevation
Groundwater Elevation

Tables
Well ID Date Installed Date Casing Depth
(feet bgs)
Screened
Interval (feet
bgs)
Bottom of Well
(feet bgs)
TOC Elevation
(feet bgs)
Depth to Water
from TOC
(feet bgs)
LNAPL
Thickness
(feet)
Groundwater
Elevation (feet
bgs)
Comments
9/17/2014 7.41 1.20 0
3/16/2015 9.32 4.61 0 Before MMPE
12/14/2015 11.37 6.03 93.80 Before MMPE
9.47 1.42 91.75 Before AFVR
10/16/2017 12.28 1.37 88.90 Before MMPE
10/20/2017 12.64 87.36 After MMPE
MW-1R 11/18/2020 15 5-15 15 100.34
MW-2 9/9/2014 16 6-16 16
99.65
100.27
TABLE 1
WELL CONSTRUCTION AND GAUGING INFORMATION
SPEEDWAY #7980
INCIDENT NO. 29878
DUNN, NORTH CAROLINA
7/15/2015
NA
100
NA
8/17/2016
3/28/2017
MW-1
7/22/2015
16 6-16
9.34
MW-3
Destroyed
0.03 90.96 Gauged prior to
slug test
3/28/2017
8/17/2016
16 6-16 16
9/9/2014 16
Destroyed
Page 1 of 3
Well ID Date Installed Date Casing Depth
(feet bgs)
Screened
Interval (feet
bgs)
Bottom of Well
(feet bgs)
TOC Elevation
(feet bgs)
Depth to Water
from TOC
(feet bgs)
LNAPL
Thickness
(feet)
Groundwater
Elevation (feet
bgs)
Comments
TABLE 1
WELL CONSTRUCTION AND GAUGING INFORMATION
SPEEDWAY #7980
INCIDENT NO. 29878
DUNN, NORTH CAROLINA
7/17/2015 8.09 --91.19
12/14/2015 6.02 --93.26 Before MMPE
12/18/2015 7.00 --92.28 After MMPE
4/26/2017 4.34 --94.94
10/16/2017 10.73 0.07 88.61 Before MMPE
10/20/2017 10.80 --88.48 After MMPE
11/20/2017 11.93 --87.35
11/18/2020 5.15 --94.13
4/19/2021 6.78 0.19 92.66
11/16/2021 11.20 0.10 88.17 Before AFVR
12/20/2021 9.85 --89.43
2/7/2022 6.28 --93.00
9/29/2022 9.91 --89.37
8/1/2023 6.36 --92.92
7/17/2015 8.00 --91.19
12/14/2015 5.99 0.03 93.23 Before MMPE
12/18/2015 6.28 --92.91 After MMPE
1/18/2016 5.47 --93.72
9.56 --89.63 Before AFVR
9.98 --89.21 After AFVR
9/19/2016 7.56 --91.63
7.52 --91.67 Before AFVR
7.75 --91.44 After AFVR
4/26/2017 4.17 --95.02
10/16/2017 10.55 --88.64 Before MMPE
10/20/2017 10.88 --88.31 After MMPE
11/20/2017 11.82 --87.37
11/18/2020 4.88 --94.18
4/19/2021 6.24 --92.82
11/16/2021 10.81 --88.25
12/20/2021 9.52 --89.54
2/7/2022 6.07 --92.99
9/29/2022 9.35 --89.71
8/1/2023 6.03 --93.03
7/17/2015 9.08 --91.08
12/14/2015 6.96 --93.20 Before MMPE
12/18/2015 7.72 --92.44 After MMPE
10.93 --89.23 Before AFVR
10.99 --89.17 After AFVR
8.51 --91.65 Before AFVR
8.75 --91.41 After AFVR
4/26/2017 5.17 --94.99
10/16/2017 11.61 --88.55 Before MMPE
10/20/2017 11.80 --88.36 After MMPE
11/20/2017 11.81 --88.35
5/23/2019 8.96 --91.20
11/18/2020 6.06 --94.10
4/19/2021 7.46 --92.70
12/20/2021 10.79 --89.37
2/7/2022 7.29 --92.87
9/29/2022 10.80 --89.36
8/1/2023 7.26 --92.90
7/17/2015 7.98 --91.11
4/26/2017 4.37 --94.72
11/20/2017 10.85 --88.24
11/18/2020 5.19 --93.90
4/19/2021 6.45 --92.64
12/20/2021 NM --NM Inaccessible
2/7/2022 NM --NM Inaccessible
9/29/2022 9.81 --89.28
8/1/2023 6.28 --92.81
MW-7 7/16/2015 16 6-16 16 99.09
MW-4 7/16/2015 16 6-16 16 99.28
MW-5R 11/18/2020 15 5-15 15 99.06
Destroyed
16 6-16 16 100.16
8/17/2016
3/28/2017
MW-6 7/16/2015
MW-5 7/16/2015
8/17/2016
3/28/2017
16 99.19166-16
Page 2 of 3
Well ID Date Installed Date Casing Depth
(feet bgs)
Screened
Interval (feet
bgs)
Bottom of Well
(feet bgs)
TOC Elevation
(feet bgs)
Depth to Water
from TOC
(feet bgs)
LNAPL
Thickness
(feet)
Groundwater
Elevation (feet
bgs)
Comments
TABLE 1
WELL CONSTRUCTION AND GAUGING INFORMATION
SPEEDWAY #7980
INCIDENT NO. 29878
DUNN, NORTH CAROLINA
7/17/2015 7.97 --91.26
4/26/2017 5.26 --93.97
11/20/2017 10.97 --88.26
11/18/2020 5.13 --94.10
4/19/2021 6.31 --92.92
12/20/2021 9.85 --89.38
2/7/2022 5.82 --93.41
9/29/2022 9.90 --89.33
8/1/2023 5.13 --94.10
5/23/2019 20 5-20 20 NA 9.29 --NA
11/18/2020 14.35 --86.50
4/19/2021 7.75 --93.10
12/20/2021 11.56 --89.29
2/7/2022 7.76 --93.09
9/29/2022 11.15 --89.70
8/1/2023 7.52 --93.33
5/23/2019 20 5-20 20 NA 7.55 --100.58
11/18/2020 6.52 --94.29
4/19/2021 8.03 --92.78
12/20/2021 11.35 --89.46
2/7/2022 7.79 --93.02
9/29/2022 11.99 0.76 89.38
4/7/2023 8.97 0.81 92.43
8/1/2023 8.39 0.42 92.73 Bail-down test
1/15/2020 6.09 --93.60
11/18/2020 5.12 --94.57
4/19/2021 6.32 --93.37
12/20/2021 10.49 --89.20
2/7/2021 6.15 --93.54
9/29/2022 9.36 --90.33
8/1/2023 5.82 --93.87
7/17/2015 10.71 --89.57
4/26/2017 9.02 --91.26
11/20/2017 9.64 --90.64
2/19/2018 NM NM NM
5/23/2019 7.34 --NM
2/19/2018 NM --NM
11/18/2020 5.08 -----
4/19/2021 7.16 -----
12/20/2021 10.46 -----
2/7/2022 7.02 --NM
9/29/2022 10.54 --NM
8/1/2023 6.95 --NM
Notes:
bgs - below ground surface
TOC - Top of Casing
100.81
MW-11 1/14/2020 12 2-12 12 99.69
RW-2 2/19/2018 20 5-20 20 NM
MW-8 7/16/2015 16 6-16 16 99.23
15 5-15
5/23/2019
Destroyed
Destroyed
40-45 45 100.28
Destroyed
MW-9 5/23/2019
RW-1 2/19/2018
Destroyed
MW-10
20 5-20 20 NM
MW-9R 11/18/2020 15 100.85
MW-10R 11/18/2020 15 5-15 15
TW-1 457/17/2015
Page 3 of 3
Date Time Time LNAPL Water Thickness
1005 1.0 --8.48 0.00
1006 2.0 --8.32 0.00
1007 3.0 --8.24 0.00
1008 4.0 --8.14 0.00
1009 5.0 --8.06 0.00
1010 6.0 --8.01 0.00
1011 7.0 --7.96 0.00
1012 8.0 --7.91 0.00
1013 9.0 --7.89 0.00
1014 10.0 --7.87 0.00
1015 11.0 --7.84 Trace
1017 13.0 7.82 7.83 0.01
1019 15.0 7.81 7.82 0.01
1021 17.0 7.80 7.83 0.03
1023 19.0 7.80 7.83 0.03
1025 21.0 7.80 7.83 0.03
1030 26.0 7.78 7.85 0.07
1035 31.0 7.78 7.86 0.08
1040 36.0 7.78 7.88 0.10
1045 41.0 7.77 7.94 0.17
1055 51.0 7.78 7.88 0.10
1105 61.0 7.78 7.93 0.15
1115 71.0 7.78 7.90 0.12
1125 81.0 7.78 7.90 0.12
1135 91.0 7.78 7.92 0.14
1145 111.0 7.78 7.92 0.14
1155 121.0 7.78 7.99 0.21
1205 131.0 7.78 8.05 0.27
1235 161.0 7.78 7.98 0.20
1305 191.0 7.78 8.05 0.27
1335 221.0 7.78 8.10 0.32
1405 251.0 7.78 8.08 0.30
1505 311.0 7.78 8.14 0.36
Notes:
bgs - below ground surface
LNAPL - Light-non-aqueous phase liquid
0.25
8/1/2023
Fluid Type Unknown
Color Dark brown
Density --
Viscosity --
Removal end time
Volume of LNAPL removed (gallons)
Volume of water removed (gallons)
7.97
8.39
No, LNAPL thickness is 0.42 feet
0930
1004
1.25
Pre-Test Checks
Initial depth to LNAPL (feet bgs)
Initial depth to water (feet bgs)
LNAPL Thickness > 0.5 feet?
LNAPL Removal Information
Removal start time
TABLE 2
LNAPL RECOVERY RATE DATA
SPEEDWAY #7980
DUNN, NORTH CAROLINA
INCIDENT NO. 29878
Page 1 of 1