RA-3936_23651_CA_MRP_20171109

Groundwater Monitoring Report
Duncan’s Mini Mart
Roxboro, Person County, North Carolina
Progress Project 1017178.001
November 9, 2017
1
GROUNDWATER MONITORING REPORT
A SITE INFORMATION
Date of Report: November 9, 2017
Facility I.D.: 00-0-0000018926
UST Incident Number (if known): 23651
Site Name: Duncan’s Mini Mart
Site Location: 1909 Burlington Road
Nearest City/Town: Roxboro, North Carolina County: Person
UST Owner: McLeod Oil Company
Address: P.O. Box 100, Mebane, North Carolina 27302 Phone: [phone]
UST Owner: McLeod Oil Company
Address: P.O. Box 100, Mebane, North Carolina 27302 Phone: [phone]
Property Owner: Ms. Virginia Wrenn
Address: 46 Vance Wrenn Road, Roxboro, North Carolina 27573 Phone: [phone]
Property Occupant: Duncan’s Mini Mart
Address: 1909 Burlington Road, Roxboro North Carolina 27573 Phone: Unknown
Consultant/Contractor: Progress Environmental, Inc.
Address: P.O. Box 5884, Winston-Salem, North Carolina 27113 Phone: [phone]
Attention: Mr. Jeffrey A. Ballsieper, L.G.
Release Information
Date Discovered: July 31, 2001
Latitude: N 36 degrees 21 minutes 56 seconds Longitude: W 79 degrees 01 minutes 17 seconds
Estimated Quantity of Release: Unknown
Cause of Release: Unknown
Source of Release (e.g., Piping/UST): UST System
Sizes and contents of UST system(s) from which the release occurred: Three 4,000-gallon gasoline
USTs, one 1,000-gallon diesel UST, one 1,000-gallon kerosene UST
Risk Classification: High Risk due to the presence of water supply wells within 1,500 feet of the
source area of the release.
Land Use Category: Residential
Groundwater Monitoring Report
Duncan’s Mini Mart
Roxboro, Person County, North Carolina
Progress Project 1017178.001
November 9, 2017
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B EXECUTIVE SUMMARY
The site is located at 1909 Burlington Road, Roxboro, Person County, North Carolina (Figures 1
and 2). The underground storage tanks (USTs) have been owned and operated by McLeod Oil
since 1985. NESCO, Inc. (NESCO) completed a Site Check as required by a Notice of Regulatory
Requirements (NORR) dated April 24, 2001 issued by the North Carolina Department of
Environment and Natural Resources (NCDENR). Based on laboratory analysis of soil samples
collected during the Site Check, the soil in the vicinity of the UST system was impacted above the
North Carolina Action Levels. NESCO completed a Limited Site Assessment (LSA) in January of
2002. Based on the findings in the LSA, the NCDENR required a Comprehensive Site Assessment
(CSA) be completed which NESCO completed in March 2003. Fuss and O’Neill, Inc. also
completed a Pre-CAP Monitoring Report, dated October 2003. Based on the available information
and historical groundwater data, several constituents exceeded their respective North Carolina 2L
Groundwater Quality Standards (NC2LGWQS) in groundwater samples collected from the on-site
monitoring wells. The detected concentrations of benzene and ethylene dibromide (EDB) also
exceeded the Gross Contamination Levels (GCLs). The site is classified as “high risk” based on
the presence of petroleum-related compounds in the groundwater samples collected from the
monitoring wells and the presence of numerous water-supply wells within 1,500 feet of the site.
Progress was contracted by McLeod Oil Company to collect groundwater samples from select
existing monitoring wells to evaluate the current groundwater conditions beneath the site.
On October 12, 2017 Progress collected and analyzed groundwater samples from monitoring wells
MW-1 through MW-4, MW-6 through MW-8, MW-10, MW-11, MW-14, and DW-1 for VOCs
using Standard Method 6200B.
Laboratory analysis of the groundwater samples collected from the monitoring wells MW-6, MW-
7, MW-8, MW-10, MW-11, and DW-1 did not detect targeted compounds above the laboratory
detection limit.
Laboratory analysis of the groundwater samples collected from monitoring wells MW-1, MW-2,
MW-3, MW-4, and MW-14 detected several petroleum-related compounds at concentrations above
their respective NC2LGWQS.
The concentration of benzene detected in the groundwater sample collected from monitoring well
MW-2 also exceeds its GCL.
Based on the results of the groundwater sampling event, Progress makes the following
recommendations:
Implement additional MMPE events to continue to reduce the dissolved-phase contamination in
the groundwater beneath the site. Following the completion of each MMPE event, a groundwater
sampling event should be completed to determine whether the MMPE event was an effective
remedial alternative for the removal of free product and/or dissolved-phase petroleum
contamination.
No further work will be performed pending pre-approval from the Raleigh Regional Office of the
NCDEQ-UST Section.
Groundwater Monitoring Report
Duncan’s Mini Mart
Roxboro, Person County, North Carolina
Progress Project 1017178.001
November 9, 2017
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C TABLE OF CONTENTS
A SITE INFORMATION................................................................................................................................ 1
B EXECUTIVE SUMMARY......................................................................................................................... 2
C TABLE OF CONTENTS............................................................................................................................ 3
D SITE HISTORY AND CHARACTERIZATION..................................................................................... 4
E PRESENTATION OF CURRENT SITE ASSESSMENT INFORMATION/COMPARISON
TO HISTORICAL ASSESSMENT INFORMATION............................................................................ 4
F FREE PRODUCT REMOVAL.................................................................................................................. 6
G MONITORED NATURAL ATTENUATION/NATURAL SOURCE ZONE DEPLETION
STATUS........................................................................................................................................................ 6
H CONCLUSIONS.......................................................................................................................................... 7
I STATEMENTS AND CERTIFICATION................................................................................................ 7
FIGURES
Figure 1 -- Topographic Site Map
Figure 2 -- Site Map
Figure 3 -- Monitoring Wel Location Map
Figure 4 -- Groundwater Analytical Results Map
Figure 5 -- Groundwater Flow Direction Map
Figure 6 -- Benzene Isoploeth Map
Figure 7 -- Total BTEX Isoploeth Map
Figure 8 -- MTBE Isoploeth Map
TABLES
Table B-4 -- Summary of Detected Groundwater Analytical Results
Table B-7 -- Well Construction Information
APPENDICES
Field Data Sheets
Laboratory Data Sheets and Chain-of-Custody Record
Groundwater Monitoring Report
Duncan’s Mini Mart
Roxboro, Person County, North Carolina
Progress Project 1017178.001
November 9, 2017
4
D SITE HISTORY AND CHARACTERIZATION
The site is located at 1909 Burlington Road, Roxboro, Person County, North Carolina (Figures 1
and 2). The underground storage tanks (USTs) have been owned and operated by McLeod Oil
since 1985. NESCO, Inc. (NESCO) completed a Site Check as required by a Notice of Regulatory
Requirements (NORR) dated April 24, 2001 issued by the North Carolina Department of
Environment and Natural Resources (NCDENR). Based on laboratory analysis of soil samples
collected during the Site Check, the soil in the vicinity of the UST system was impacted above the
North Carolina Action Levels. NESCO completed a Limited Site Assessment (LSA) in January of
2002. Based on the findings in the LSA, the NCDENR required a Comprehensive Site Assessment
(CSA) be completed which NESCO completed in March 2003. Fuss and O’Neill, Inc. also
completed a Pre-CAP Monitoring Report, dated October 2003. Based on the available information
and historical groundwater data, several constituents exceeded their respective North Carolina 2L
Groundwater Quality Standards (NC2LGWQS) in groundwater samples collected from the on-site
monitoring wells. The detected concentrations of benzene and ethylene dibromide (EDB) also
exceeded the Gross Contamination Levels (GCLs). The site is classified as “high risk” based on
the presence of petroleum-related compounds in the groundwater samples collected from the
monitoring wells and the presence of numerous water-supply wells within 1,500 feet of the site.
E PRESENTATION OF CURRENT SITE ASSESSMENT
INFORMATION/COMPARISON TO HISTORICAL ASSESSMENT
INFORMATION
Regional Geology and Hydrogeology
The site is located in the Piedmont Physiographic Province of North Carolina. The rocks beneath the
site have been characterized as metamorphosed granitic rock. Groundwater generally is stored in the
pore space between individual grains of residual soil and in the fractures within the underlying parent
rock. Due to the intense shearing associated with the thrust faulting in the area and the relatively
shallow depths to bedrock, it can be expected that the fractures play a major role in the flow of
groundwater in the subsurface.
Recharge to the water table is primarily by precipitation infiltrating the upper soils and percolating
downward, under the influence of gravity, to the groundwater table. Typically, the water table is not
a level surface, but a subdued reflection of the land surface. However, the depth to the water table is
not constant, and depends on many factors, which include the amount of rainfall, the permeability of
the soil, and the amount of groundwater being pumped in the area.
Site Geology and Hydrogeology
Based on our review of the topographic map and on-site observation, the site is located along a
broad northeast-southwest trending ridge. Groundwater generally flows in directions sub-parallel
to the ground surface slopes and under the influence of gravity toward points of discharge such as
creeks, swamps, drainage swales, or pumped groundwater wells. Based on topographic inference,
groundwater beneath the site most likely flow generally south toward an unnamed tributary (Figure
1).
Groundwater Monitoring Report
Duncan’s Mini Mart
Roxboro, Person County, North Carolina
Progress Project 1017178.001
November 9, 2017
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Determination of Groundwater Flow Direction
The depth to the groundwater surface in each of the wells was measured prior to well purging
using a decontaminated electric sounder. The wells were surveyed by others using a relative
benchmark and given an arbitrary elevation. The elevations of the monitoring wells and the
groundwater surface are both relative to that benchmark. The relative groundwater elevations are
shown in Table B-7.
A groundwater contour map was constructed for the site by Progress. Groundwater elevations are
depicted on Figure 3. Based on information collected during the groundwater sampling event, the
groundwater flow direction appears to be south and southwesterly beneath the site.
Groundwater Sampling Activities
Progress was authorized by the North Carolina Department of Environmental Quality (NCDEQ) to
collect and test groundwater samples from on-site monitoring wells as part of the ongoing natural
attenuation activities at the site. Progress collected groundwater samples from monitoring wells
MW-1 through MW-4, MW-6 through MW-8, MW-10, MW-11, MW-14, and DW-1 on October
12, 2017. The monitoring well depths and screened intervals are summarized in Table B-7.
Prior to sampling the monitoring wells, the depth-to-groundwater from the top of each well casing
was measured in the monitoring wells using an electric water level indicator. The meter was
decontaminated between uses according to the following procedure:
washed with potable water and phosphate-free detergent solution;
rinsed with potable water; and
rinsed with distilled water.
The monitoring wells were purged by bailing an equivalent of three volumes of water from the
wells using a one-liter capacity disposable polypropylene bailer. The monitoring wells were then
sampled using a dedicated, disposable bailer for each well. The groundwater samples were
decanted into laboratory-prepared containers. The sample containers were labeled with identifying
numbers and information, preserved on ice, and delivered under chain-of-custody to R&A in
Kernersville, North Carolina for analysis.
Laboratory Analytical Results
R&A analyzed the groundwater samples for volatile organic compounds (VOCs) by Standard
Method 6200B including ethanol, MTBE, and IPE. A summary of the groundwater analytical
results is presented in Table B-4 and on Figure 4.
Laboratory analysis of the groundwater sample collected from monitoring well MW-1 detected
benzene (3,040 µg/L), ethylbenzene (2,350 µg/L), toluene (34,700 µg/L), xylenes (10,800 µg/L),
naphthalene (1,020 µg/L), n-propylbenzene (335 µg/L), 1,2,4-trimethylbenzene (2,490 µg/L), and
1,3,5-trimethylbenzene (668 µg/L) at concentrations that exceed their respective NC2LGWQS.
Laboratory analysis of the groundwater sample collected from monitoring well MW-2 detected
benzene (8,480 µg/L), ethylbenzene (2,520 µg/L), toluene (82,100 µg/L), xylenes (6,520 µg/L),
Groundwater Monitoring Report
Duncan’s Mini Mart
Roxboro, Person County, North Carolina
Progress Project 1017178.001
November 9, 2017
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methyl-tert butyl ether (MTBE) (11,200 µg/L), naphthalene (860 µg/L), n-propylbenzene (330
µg/L), 1,2,4-trimethylbenzene (2,650 µg/L), and 1,3,5-trimethylbenzene (685 µg/L) at
concentrations that exceed their respective NC2LGWQS. Note that the concentration of benzene
also exceeds its gross contaminant level (GCL).
Laboratory analysis of the groundwater sample collected from monitoring well MW-3 detected
benzene (1,290 µg/L), ethylbenzene (2,640 µg/L), toluene (43,400 µg/L), xylenes (11,900 µg/L),
MTBE (252 µg/L), I-propylbenzene (125 µg/L), naphthalene (742 µg/L), n-propylbenzene (392
µg/L), 1,2,4-trimethylbenzene (3,020 µg/L), and 1,3,5-trimethylbenzene (839 µg/L) at
concentrations that exceed their respective NC2LGWQS. N-butylbenzene was detected at a
concentration below its NC2LGWQS in the groundwater sample collected from monitoring well
MW-3.
Laboratory analysis of the groundwater sample collected from monitoring well MW-4 detected
1,2-dichloroethane (176 µg/L), benzene (370 µg/L), ethylbenzene (2,640 µg/L), toluene (43,400
µg/L), MTBE (8,330 µg/L), isopropyl ether (105 µg/L), and naphthalene (35.7 µg/L) at
concentrations that exceed their respective NC2LGWQS. Several petroleum-related compounds at
concentrations below their respective NC2LGWQS were detected in the groundwater sample
collected from monitoring well MW-4.
Laboratory analysis of the groundwater sample collected from monitoring well MW-14 detected
benzene (3,980 µg/L), ethyl benzene (2,680 µg/L), toluene (70,700 µg/L), xylenes (12,600 µg/L),
naphthalene (805 µg/L), n-propylbenzene (400 µg/L), 1,2,4-trimethylbenzene (3,280 µg/L), and
1,3,5-trimethylbenzene (875 µg/L) at concentrations that exceed their respective NC2LGWQS.
Laboratory analysis of the groundwater samples collected from monitoring wells MW-6, MW-7,
MW-8, MW-10, MW-11, and DW-1 did not detect targeted compounds above the laboratory
detection limits.
F FREE PRODUCT REMOVAL
Free product was not measured in the select monitoring wells as part of this groundwater
assessment.
G MONITORED NATURAL ATTENUATION/NATURAL SOURCE ZONE
DEPLETION STATUS
Progress collected groundwater samples from monitoring wells MW-1 through MW-4, MW-6
through MW-8, MW-10, MW-11, MW-14, and DW-1 on October 12, 2017.
Laboratory Analytical Results
Laboratory analysis of the groundwater samples collected from monitoring wells MW-6, MW-7,
MW-8, MW-10, MW-11, and DW-1 did not detect targeted compounds above the laboratory
detection limits.
Groundwater Monitoring Report
Duncan’s Mini Mart
Roxboro, Person County, North Carolina
Progress Project 1017178.001
November 9, 2017
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Laboratory analysis of the groundwater samples collected from monitoring wells MW-1, MW-2,
MW-3, MW-4, and MW-14 detected several petroleum-related compounds at concentrations above
their respective NC2LGWQS.
The concentrations detected in the groundwater in the vicinity of the source area (i.e., MW-1
through MW-4, and MW-14) have generally decreased over time. However, the groundwater
samples collected as part of the October 2017 sampling event generally indicated increases
compared to the November 2015 sampling event. In addition, GCL violations for benzene have
persisted in the groundwater samples collected from MW-2 since the November 2001 sampling
event. Without active remediation at the site, it is unlikely that the concentrations detected in the
groundwater samples will significantly decrease.
H CONCLUSIONS
Based on the results of the groundwater sampling event, Progress makes the following
conclusions:
Progress collected and analyzed groundwater samples from monitoring wells MW-1
through MW-4, MW-6 through MW-8, MW-10, MW-11, MW-14, and DW-1 for VOCs
using standard Method 6200B.
Laboratory analysis of the groundwater samples collected from the monitoring wells MW-
6, MW-7, MW-8, MW-10, MW-11, and DW-1 did not detect targeted compounds above
the laboratory detection limit.
Laboratory analysis of the groundwater samples collected from monitoring wells MW-1,
MW-2, MW-3, MW-4, and MW-14 detected several petroleum-related compounds at
concentrations above their respective NC2LGWQS.
The concentration of benzene detected in the groundwater sample collected from
monitoring well MW-2 also exceeds its GCL.
Based on the results of the groundwater sampling event, Progress makes the following
recommendations:
Implement additional MMPE events to continue to reduce the dissolved-phase
contamination in the groundwater beneath the site. Following the completion of each
MMPE event, a groundwater sampling event should be completed to determine whether
the MMPE event was an effective remedial alternative for the removal of free product
and/or dissolved-phase petroleum contamination.
No further work will be performed pending pre-approval from the Raleigh Regional Office
of the NCDEQ-UST Section.
I STATEMENTS AND CERTIFICATION
1 Enter the date the monitoring report wasdue.N/A.Will this report be submitted after
the established duedate?
YES NO
2 Was any required information from the above template missing from this report?YES NO
3 If applicable, will any of the proposed attenuation milestones under the schedule
approved in the Corrective Action Plan not be met?(within a reasonable margin of error)
YES NO
FIGURES
Figure 1
Topographic Site Map

Duncan’s Mini Mart
1909 Burlington Road
Roxboro, North Carolina

P.O. Box 5884
Winston-Salem, NC 27113
Telephone: [phone]
Fax: [phone]
www.progressenvironmental.com

Hurdle Mills, N.C.

United States Department of the Interior
United States Geological Survey
7.5 Minute Series Topographic Map
Contour Interval: 10 feet
Scale: 1”=2000’
Date: 1968
Project: Duncan’s Mini Mart

Client: McLeod Oil
Progress Job #: 1017178.001
Date: November 2017

SITE
SITE
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DRAWINGTITLE
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BY DATEREV
DR.: JTR
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APP'D.:
SCALE: 1"=100'
GRAPHICSCALE
100'200'
PROGRESSNO.: 1017178.001
1"=100'
www.progressenvironmental.com %db("MAG-DATE")Figure2
120FayetteStreetWinston-Salem, NorthCarolina27101(336)722-9999
Progress
Environmental,Inc.
SiteMapDuncan'sMini Mart1909BurlingtonRoadRoxboro, NorthCarolina
SITE
LEGEND
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MW-9
MW-12
MW-13
MW-5
MW-4
MW-2
MW-1
MW-14
MW-3
DW-1
DW-1
TYPE III WELLLOCATION
FENCE
APPROXIMATE PROPERTY BOUNDARY
RESIDENCE OR STRUCTURE
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Figure 3.SKF
P.O. Box 5884WINSTON-SALEM, NORTH CAROLINA27113PHONE [phone] FAX [phone]
FIGURE 3
MONITORING WELLLOCATION MAP
DUNCAN'S MINI MART
1909 BURLINGTON ROAD
ROXBORO, NORTH CAROLINA%db("MAG-DATE")PROJECT
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BUTBELOWGCLs
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MW-7
MW-10
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MW-9
MW-12
MW-13
MW-5
MW-4
MW-2
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MW-14
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RESIDENCE OR STRUCTURE
MW-2 MONITORINGWELLLOCATIONABOVE GCLs
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FIGURE 4
GROUNDWATERANALYTICALRESULTS MAP
DUNCAN'S MINI MART
1909 BURLINGTON ROAD
ROXBORO, NORTH CAROLINA%db("MAG-DATE")PROJECT
CHECKED BY
DRAWN BY
FILE NAME
SCALE
DATE
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VANCEWRENNROADMW-1
(623.08)MONITORINGWELLLOCATIONAND RELATIVE
GROUNDWATER ELEVATION
WATER SUPPLYWELLLOCATION
MW-6(623.42)
MW-7(623.30)
MW-10(630.78)
MW-11(630.07)
MW-8(617.98)
MW-9
MW-12
MW-13
MW-5
MW-4(623.16)
MW-2
(623.26)
MW-1(623.08)
MW-14
MW-3
(623.45)
DW-1
DW-1
TYPE III WELLLOCATION
FENCE
APPROXIMATE PROPERTY BOUNDARY
RESIDENCE OR STRUCTURE
626.00
623.00
629.00
620.00
GROUNDWATER ISOPLETH LINE(3 FOOTCONTOUR INTERVAL)
GROUNDWATER FLOWDIRECTION
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FIGURE 5
GROUNDWATER FLOW DIRECTION MAP
DUNCAN'S MINI MART
1909 BURLINGTON ROAD
ROXBORO, NORTH CAROLINA%db("MAG-DATE")PROJECT
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MW-6(BDL)
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(BDL)
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MW-8(BDL)
MW-9
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MW-5
MW-4(370)
MW-2(8,480)MW-1(3,040)
MW-14(3,980)
MW-3(1,290)
DW-1(0.69)
FENCE
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RESIDENCE OR STRUCTURE
1,000
100
BDL
MONITORINGWELLLOCATIONAND
BENZENECONCENTRATION
DW-1
(0.69)TYPE III WELLLOCATIONAND
BENZENECONCENTRATION
MW-1(3,040)
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FIGURE 6
BENZENE ISOPLETH MAP
DUNCAN'S MINI MART
1909 BURLINGTON ROAD
ROXBORO, NORTH CAROLINA%db("MAG-DATE")PROJECT
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TYPE III WELLLOCATIONANDTOTALBTEX CONCENTRATION
FENCE
APPROXIMATE PROPERTY BOUNDARY
RESIDENCE OR STRUCTURE
50,000
BDL
MW-1
(50,890)
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FIGURE 7
TOTALBTEX ISOPLETH MAP
DUNCAN'S MINI MART
1909 BURLINGTON ROAD
ROXBORO, NORTH CAROLINA%db("MAG-DATE")PROJECT
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(11,200)MW-1(BDL)
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FIGURE 8
MTBE ISOPLETH MAP
DUNCAN'S MINI MART
1909 BURLINGTON ROAD
ROXBORO, NORTH CAROLINA%db("MAG-DATE")PROJECT
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TABLES
TABLE B-4
DUNCAN'S MINI MART
SUMMARY OF DETECTED GROUNDWATER ANALYTICAL RESULTS
GROUNDWATER MONITORING REPORT
504.1
Lead by
Standard
Method3030C
Well ID DTW
(From TOC)Date Collected
31.68 11/26/2001 <1,000 6,430 2,241 NA NA NA NA 28,824 9,748 1,485 <1,000 NA NA 339 NA NA NA NA BQL NA NA NA NA NA NA <1 9 <5
27.39 1/27/2003 <2,000 13,283 2,740 NA NA NA NA 47,313 12,331 2,383 <2,000 NA NA 269 NA NA NA NA BQL NA NA NA NA NA NA <1 -- <5
19.17 8/12/2003 --7,708 2,060 NA NA NA NA 23,138 9,620 4,766 171 NA NA 632 NA NA NA NA BQL NA NA NA NA NA NA <1 83 --
19.51 9/4/2003 --9,630 1,904 NA NA NA NA 29,064 9,031 3,700 160 NA NA 532 NA NA NA NA BQL NA NA NA NA NA NA <1 79 --
28.11 10/14/2008 <1 11,400 3,170 NA NA NA NA 40,800 10,300 <5 <5 NA NA NA NA NA NA NA BQL NA NA NA NA NA NA <1 NA NA
29.60 10/27/2011 BQL 10,600 2,430 BQL BQL BQL 160 37,700 11,200 BQL 6.5J 100 BQL 550 33.3 280 BQL BQL BQL 2,200 508 BQL BQL BQL NA BQL NA NA
24.60 5/23/2013 BQL 7,890 1,890 BQL BQL BQL 148J 32,600 9,970 1,940 BQL 70J BQL 540 37.5J 238 BQL BQL BQL 2,180 598 BQL BQL BQL 4,370J BQL NA NA
25.10 1/8/2014 BQL 8,030 2,390 BQL BQL BQL BQL 35,200 12,700 2,370 BQL BQL BQL 560 BQL 250J BQL BQL BQL 2,590 680 BQL BQL BQL BQL BQL NA NA
21.40 4/23/2015 BQL 5,410 2,070 BQL BQL BQL BQL 33,000 12,200 1,750 BQL BQL BQL 1,190 BQL BQL BQL BQL BQL 2,810 690 BQL BQL BQL BQL BQL NA NA
24.53 11/11/2015 BQL 5,100 2,280 BQL BQL BQL BQL 23,800 10,400 500 BQL BQL BQL 715 BQL 300 BQL BQL BQL 2,430 618 BQL BQL BQL BQL BQL NA NA
26.14 10/12/2017 BQL 3,040 2,350 BQL BQL BQL BQL 34,700 10,800 BQL BQL BQL BQL 1,020 BQL 335 BQL BQL BQL 2,490 668 BQL BQL BQL BQL BQL NA NA
31.76 11/26/2001 <2,000 10,168 2,568 NA NA NA NA 69,256 11,178 6,301 <2,000 NA NA 280 NA NA NA NA BQL NA NA NA NA NA NA <1 1.6 10
27.67 1/27/2003 <2,000 11,764 2,605 NA NA NA NA 75,998 11,245 9,002 <2,000 NA NA 236 NA NA NA NA BQL NA NA NA NA NA NA <1 -- <5
19.45 8/12/2003 --10,300 2,184 NA NA NA NA 54,500 9,938 8,600 491 NA NA 616 NA NA NA NA BQL NA NA NA NA NA NA <1 <50 --
19.75 9/4/2003 --11,300 2,170 NA NA NA NA 54,400 9,896 8,050 <50 NA NA 465 NA NA NA NA BQL NA NA NA NA NA NA <1 <50 --
28.36 10/14/2008 <1 10,900 5,050 NA NA NA NA 72,100 14,100 <5 <5 NA NA NA NA NA NA NA BQL NA NA NA NA NA NA <1 NA NA
29.74 10/27/2011 BQL 11,000 2,350 BQL BQL 1,680 290 69,700 11,000 8,040 33.3 99.8 127 535 BQL 280 21.8 BQL BQL 2,150 524 BQL BQL BQL NA BQL NA NA
24.95 5/23/2013 BQL 11,600 2,470 BQL BQL BQL BQL 88,100 11,400 12,800 50J 90J BQL 580 BQL 310 BQL BQL BQL 2,340 605 BQL BQL BQL 52,300 BQL NA NA
25.52 1/8/2014 BQL 9,580 2,420 BQL BQL BQL BQL 84,900 12,200 10,500 BQL BQL BQL 480J BQL 260J BQL BQL BQL 2,590 680 BQL BQL BQL 41,800J BQL NA NA
21.38 4/23/2015 BQL 9,900 2,260 BQL BQL BQL BQL 72,300 10,600 7,640 BQL BQL BQL 415 BQL 265 BQL BQL BQL 2,050 550 BQL BQL BQL BQL BQL NA NA
24.92 11/11/2015 BQL 8,080 2,060 BQL BQL BQL BQL 52,700 9,850 8,890 BQL BQL BQL 520 BQL 250 BQL BQL BQL 2,060 480 BQL BQL BQL BQL BQL NA NA
26.23 10/12/2017 BQL 8,480 2,520 BQL BQL BQL BQL 82,100 6,520 11,200 BQL BQL BQL 860 BQL 330 BQL BQL BQL 2,650 685 BQL BQL BQL BQL BQL NA NA
30.28 3/26/2002 <1,000 1,554 3,552 NA NA NA NA 57,427 15,341 <1,000 <1,000 NA NA 1,269 NA NA NA NA BQL NA NA NA NA NA NA <1 0.30 46
27.52 1/27/2003 <2,000 <2,000 3,600 NA NA NA NA 49,417 15,790 <2,000 <2,000 NA NA 881 NA NA NA NA BQL NA NA NA NA NA NA <1 -- <5
19.26 8/12/2003 --560 1,496 NA NA NA NA 14,908 5,699 134 78 NA NA 485 NA NA NA NA BQL NA NA NA NA NA NA <1 <10 --
19.55 9/4/2003 --1,399 2,017 NA NA NA NA 32,980 8,854 <10 160 NA NA 521 NA NA NA NA BQL NA NA NA NA NA NA <1 <10 --
28.25 10/14/2008 <1 2,660 3,950 NA NA NA NA 32,500 10,400 <5 <5 NA NA NA NA NA NA NA BQL NA NA NA NA NA NA <1 NA NA
29.54 10/27/2011 BQL 619 2,940 BQL BQL BQL 545 31,800 13,500 BQL BQL 159 BQL 786 BQL 469 39.8 BQL BQL 3,730 797 BQL BQL BQL NA BQL NA NA
24.66 5/23/2013 BQL 41J 62 BQL BQL BQL BQL 522 425 BQL BQL BQL BQL 30J BQL 24J BQL BQL 188 274 115 BQL BQL BQL BQL BQL NA NA
25.38 1/8/2014 BQL 1.12 1.85 BQL BQL BQL BQL 20.4 23.5 BQL BQL BQL BQL 0.61 BQL 0.25J BQL BQL BQL 7.51 2.85 BQL BQL BQL BQL BQL NA NA
21.25 4/23/2015 BQL 6.6 25.6 BQL BQL BQL BQL 58.2 107 BQL BQL 2.8 BQL 10.1 BQL 7.7 BQL BQL BQL 81.8 15.3 BQL BQL BQL BQL BQL NA NA
24.72 11/11/2015 BQL 881 1,090 BQL BQL BQL 225 14,600 5,600 596 BQL 57 BQL 413 BQL 176 19.5 BQL BQL 1,580 504 BQL BQL BQL BQL BQL NA NA
25.94 10/12/2017 BQL 1,290 2,640 BQL BQL BQL BQL 43,400 11,900 252 BQL 125 BQL 742 BQL 392 BQL 23.3 BQL 3,020 839 BQL BQL BQL BQL BQL NA NA
30.40 3/26/2002 35 297 <20 NA NA NA NA 56 221 53 21 NA NA <10 NA NA NA NA BQL NA NA NA NA NA NA <1 10.3 11
26.57 1/27/2003 <50 1,143 <50 NA NA NA NA <50 282 59 <50 NA NA 31 NA NA NA NA BQL NA NA NA NA NA NA <1 -- <5
19.46 8/12/2003 --477 <1 NA NA NA NA 3.7 70.4 17 9.9 NA NA 38 NA NA NA NA BQL NA NA NA NA NA NA <1 1.9 --
19.71 9/4/2003 --454 <1 NA NA NA NA 3.7 78.9 79 13 NA NA 28 NA NA NA NA BQL NA NA NA NA NA NA <1 4.4 --
28.30 10/14/2008 <1 2,910 186 NA NA NA NA 142 563 2,130 <5 NA NA NA NA NA NA NA BQL NA NA NA NA NA NA <1 NA NA
29.68 10/27/2011 223 2,790 63.2 3.14 8.0 BQL BQL 9.29 122 4,490 120 79.9 BQL 175 BQL 27.4 3.42 9.0 BQL 18.1 BQL BQL BQL BQL NA BQL NA NA
24.87 5/23/2013 148 540 671 2.1J 3.2J BQL BQL BQL 101 5,990 83.6 42 BQL 52.5 BQL 17.3 2.20J 6.80 8.2 30.7 6.4 BQL BQL 1.6J 7,620 BQL NA NA
25.52 1/8/2014 211 1,160 71.0 BQL BQL BQL BQL BQL 86.0 8,530 107 52.0 BQL 81.0 BQL 21.0J BQL BQL BQL 33.0J BQL BQL BQL BQL 8,210 BQL NA NA
21.37 4/23/2015 101 43.2 BQL BQL BQL BQL BQL BQL BQL 4,610 63.2 18.5 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL NA NA
24.90 11/11/2015 142 323 11.7 BQL 2.75 BQL BQL 2.90 19.1 7,540 103 42.3 BQL 48.0 BQL 12.1 BQL 6.05 6.50 10.3 10.9 BQL BQL BQL BQL BQL NA NA
26.16 10/12/2017 176 370 7.1 BQL BQL BQL BQL 2.80 45.8 8,330 105 45.7 BQL 35.7 BQL 9.70 BQL 5.10 8.10 8.45 BQL BQL BQL BQL BQL BQL NA NA
21.64 1/27/2003 <1 1.2 <1 NA NA NA NA 6 <3 2 <1 NA NA <10 NA NA NA NA BQL NA NA NA NA NA NA <1 <10 <5
14.08 9/4/2003 -- <1 <1 NA NA NA NA <1 <3 <1 <1 NA NA <1 NA NA NA NA BQL NA NA NA NA NA NA <1 <1 --
22.38 10/14/2008 <1 <1 <1 NA NA NA NA <1 <1 <5 <5 NA NA NA NA NA NA NA BQL NA NA NA NA NA NA <1 NA NA
24.04 10/27/2011 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL NA 0.59 NA NA
18.90 11/11/2015 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL NA NA
26.49 1/27/2003 <1 <1 <1 NA NA NA NA <1 <3 <1 <1 NA NA <10 NA NA NA NA BQL NA NA NA NA NA NA <1 <10 <5
18.63 9/4/2003 -- <1 <1 NA NA NA NA <1 <3 <1 <1 NA NA <1 NA NA NA NA BQL NA NA NA NA NA NA <1 <1 --
27.72 10/14/2008 <1 <1 <1 NA NA NA NA <1 <1 <5 <5 NA NA NA NA NA NA NA BQL NA NA NA NA NA NA <1 NA NA
29.10 10/27/2011 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL NA BQL NA NA
24.16 11/11/2015 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL NA NA
25.52 10/12/2017 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL NA NA
0.4 1 600 6 7 4,000 40 600 500 20 70 70 NE 6 0.02 70 25 70 70 400 400 70 0.7 3 40 70 0.02 15
400 5,000 84,500 6,000 7,000 4,000,000 40,000 260,000 85,500 20,000 70,000 25,000 NE 6,000 50 30,000 11,700 6,900 8,500 28,500 25,000 70,000 700 3,000 40,000 70,000 50 15,000
= Values are those that exceed the North Carolina 2L Groundwater Quality Standard (NC2LGWQS)
= Values are those that exceed the Gross Contaminant LevelsNA -- Not Analyzed
NS -- Not Sampled
NF -- Not Found
NE -- Not Established
BQL -- Below Quantitation Limits
NC2LGWQS (ug/L)
GCLs (ug/L)
Information prior to 2008 obtained from Fuss & O'Neill, Inc.: Pre-Cap Groundwater Monitoring Report, dated October 2003 Trichloroethenecis-1,2-DichloroetheneTetrachloroethene1,3,5-TrimethylbenzeneMW-4
MW-6 p-Isopropyltoluenen-Butylbenzenen-PropylbenzeneVOCs by USEPA Method 601/602 or Standard Method 6200B
ChloroformAnalytical Method
Contaminant of Concern
Tert-amylAlcoholsec-Butylbenzene2-HexanoneI-Propylbenzene1,1-DichloroethaneMW-5 EDBLeadBenzeneIsopropyletherNaphthaleneMethyltert-butyletherToluene1,2,4-Trimethylbenzene2-Butanone4-Methyl-2-PentanoneXylenesEthylbenzeneEDB1,1-DichloroetheneMW-1
MW-2
MW-3 1,2-Dichloroethane
TABLE B-4
DUNCAN'S MINI MART
SUMMARY OF DETECTED GROUNDWATER ANALYTICAL RESULTS
GROUNDWATER MONITORING REPORT
504.1
Lead by
Standard
Method
3030C
Well ID DTW
(From TOC)Date Collected
Trichloroethenecis-1,2-DichloroetheneTetrachloroethene1,3,5-Trimethylbenzenep-Isopropyltoluenen-Butylbenzenen-PropylbenzeneVOCs by USEPA Method 601/602 or Standard Method 6200B
ChloroformAnalytical Method
Contaminant of Concern
Tert-amylAlcoholsec-Butylbenzene2-HexanoneI-Propylbenzene1,1-DichloroethaneEDBLeadBenzeneIsopropyletherNaphthaleneMethyltert-butyletherToluene1,2,4-Trimethylbenzene2-Butanone4-Methyl-2-PentanoneXylenesEthylbenzeneEDB1,1-Dichloroethene1,2-Dichloroethane27.40 1/27/2003 <1 <1 <1 NA NA NA NA <1 <3 <1 <1 NA NA <10 NA NA NA NA BQL NA NA NA NA NA NA <1 <10 <5
19.70 9/4/2003 -- <1 <1 NA NA NA NA <1 <3 <1 <1 NA NA <1 NA NA NA NA BQL NA NA NA NA NA NA <1 <1 --
28.51 10/14/2008 <1 <1 <1 NA NA NA NA <1 <1 <5 <5 NA NA NA NA NA NA NA BQL NA NA NA NA NA NA 2.8 NA NA
29.97 10/27/2011 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 0.23J BQL BQL BQL BQL BQL BQL BQL BQL BQL NA 1.84 NA NA
25.00 5/23/2013 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 1.5 NA NA
24.89 11/11/2015 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL NA NA
26.45 10/12/2017 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL NA NA
21.11 1/27/2003 <1 <1 <1 NA NA NA NA <1 <3 <1 <1 NA NA <10 NA NA NA NA BQL NA NA NA NA NA NA <1 <10 <5
14.28 9/4/2003 -- <1 <1 NA NA NA NA <1 <3 <1 <1 NA NA <1 NA NA NA NA BQL NA NA NA NA NA NA <1 <1 --
21.54 10/14/2008 <1 <1 <1 NA NA NA NA <1 <1 <5 <5 NA NA NA NA NA NA NA BQL NA NA NA NA NA NA <1 NA NA
25.57 10/27/2011 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL NA BQL NA NA
17.26 11/11/2015 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL NA NA
22.90 10/12/2017 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL NA NA
16.35 1/27/2003 <10 49 105 NA NA NA NA 405 408 <10 <10 NA NA 22 NA NA NA NA BQL NA NA NA NA NA NA <1 0.061 <5
9.59 9/4/2003 -- <1 <1 NA NA NA NA <1 <3 <1 <1 NA NA <1 NA NA NA NA BQL NA NA NA NA NA NA <1 <1 --
Not Found 10/14/2008 NF NF NF NF NF NF NF NF NF NF NF NF NF NF NF NF NF NF BQL NF NF NF NF NF NA NF NF NF
Not Found 10/27/2011 NF NF NF NF NF NF NF NF NF NF NF NF NF NF NF NF NF NF BQL NF NF NF NF NF NA NF NF NF
19.62 1/27/2003 <1 <1 <1 NA NA NA NA <1 <3 <1 <1 NA NA <10 NA NA NA NA BQL NA NA NA NA NA NA <1 <0.02 <5
12.21 9/4/2003 -- <1 <1 NA NA NA NA <1 <3 <1 <1 NA NA <1 NA NA NA NA BQL NA NA NA NA NA NA <1 <1 --
22.19 10/14/2008 <1 <1 <1 NA NA NA NA <1 <1 <5 <5 NA NA NA NA NA NA NA BQL NA NA NA NA NA NA <1 NA NA
23.36 10/27/2011 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL NA BQL NA NA
17.91 11/11/2015 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL NA NA
19.27 10/12/2017 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL NA NA
18.58 1/27/2003 <1 <1 <1 NA NA NA NA <1 <3 <1 <1 NA NA <10 NA NA NA NA BQL NA NA NA NA NA NA <1 <10 <5
11.49 9/4/2003 -- <1 <1 NA NA NA NA <1 <3 <1 <1 NA NA <1 NA NA NA NA BQL NA NA NA NA NA NA <1 <1 --
21.40 10/14/2008 <1 <1 <1 NA NA NA NA <1 <1 <5 <5 NA NA NA NA NA NA NA BQL NA NA NA NA NA NA <1 NA NA
22.75 10/27/2011 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 0.43J 1.88 0.18J NA BQL NA NA
17.88 5/23/2013 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL 0.29J BQL BQL BQL NA NA
16.80 11/11/2015 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL NA NA
18.55 10/12/2017 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL NA NA
15.72 2/13/2003 <1 <1 <1 NA NA NA NA <1 <1 <1 <1 NA NA <5.4 NA NA NA NA BQL NA NA NA NA NA NA <1 <0.019 31
11.24 9/4/2003 -- <1 <1 NA NA NA NA <1 <3 <1 <1 NA NA <1 NA NA NA NA BQL NA NA NA NA NA NA <1 <1 --
Not Found 10/14/2008 NF NF NF NA NA NA NA NF NF NF NF NA NA NF NA NA NA NA BQL NA NA NA NA NA NA <1 NF NF
Not Found 10/27/2011 NF NF NF NF NF NF NF NF NF NF NF NF NF NF NF NF NF NF BQL NF NF NF NF NF NA NF NF NF
15.20 2/13/2003 <1 <1 <1 NA NA NA NA <1 <1 <1 <1 NA NA <5.4 NA NA NA NA BQL NA NA NA NA NA NA <1 <0.019 8
8.41 9/4/2003 -- <1 <1 NA NA NA NA <1 <3 <1 <1 NA NA <1 NA NA NA NA BQL NA NA NA NA NA NA <1 <1 --
17.57 10/14/2008 <1 <1 <1 NA NA NA NA <1 <1 <5 <5 NA NA NA NA NA NA NA BQL NA NA NA NA NA NA <1 NA NA
19.41 10/27/2011 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL NA BQL NA NA
NS 10/14/2008 NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS NS BQL NS NS NS NS NS NA NS NS NS
-- 10/27/2011 FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP BQL FP FP FP FP FP NA FP FP FP
24.35 5/23/2013 BQL 6,560 2,870 BQL BQL BQL BQL 70,100 13,200 2,650 BQL 130J BQL 730 BQL 490J BQL BQL BQL 3,630 900 BQL BQL BQL 9,110J BQL NA NA
24.94 1/8/2014 BQL 5,580 2,740 BQL BQL BQL BQL 78,100 13,700 3,730 BQL 100J BQL 760 BQL 440J BQL BQL BQL 3,980 970 BQL BQL BQL BQL BQL NA NA
24.94 1/8/2014 BQL 3,430 1,970 BQL BQL BQL BQL 45,100 10,700 930 BQL BQL BQL 695 BQL 390 BQL BQL BQL 3,280 895 BQL BQL BQL BQL BQL NA NA
24.25 11/11/2015 BQL 3,690 1,510 BQL BQL BQL BQL 39,200 8,300 650 BQL BQL BQL 545 BQL 250 BQL BQL BQL 2,110 575 BQL BQL BQL BQL BQL NA NA
NM 10/12/2017 BQL 3,980 2,680 BQL BQL BQL BQL 70,700 12,600 BQL BQL BQL BQL 805 BQL 400 BQL BQL BQL 3,280 875 BQL BQL BQL BQL BQL NA NA
30.75 3/26/2002 <1 8.6 <1 NA NA NA NA 2 10.4 <1 <1 NA NA <10 NA NA NA NA BQL NA NA NA NA NA NA <1 0.04 <5
27.90 1/27/2003 <1 <1 <1 NA NA NA NA <1 <3 <1 <1 NA NA <10 NA NA NA NA BQL NA NA NA NA NA NA <1 -- <5
20.24 9/4/2003 -- <1 <1 NA NA NA NA <1 <3 <1 <1 NA NA <1 NA NA NA NA BQL NA NA NA NA NA NA <1 <1 --
28.72 10/14/2008 <1 1 <1 NA NA NA NA 1.4 <1 <5 <5 NA NA NA NA NA NA NA BQL NA NA NA NA NA NA <1 NA NA
30.31 10/27/2011 BQL BQL BQL BQL BQL BQL BQL 0.38J 0.11J BQL BQL BQL BQL 0.43J BQL BQL BQL BQL BQL 0.15J BQL BQL BQL BQL NA BQL NA NA
21.65 1/8/2014 BQL BQL BQL BQL BQL BQL BQL 1.14 BQL 0.97 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL NA BQL NA NA
25.07 11/11/2015 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL NA NA
26.92 10/12/2017 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL NA NA
0.4 1 600 6 7 4,000 40 600 500 20 70 70 NE 6 0.02 70 25 70 70 400 400 70 0.7 3 40 70 0.02 15
400 5,000 84,500 6,000 7,000 4,000,000 40,000 260,000 85,500 20,000 70,000 25,000 NE 6,000 50 30,000 11,700 6,900 8,500 28,500 25,000 70,000 700 3,000 40,000 70,000 50 15,000
= Values are those that exceed the North Carolina 2L Groundwater Quality Standard (NC2LGWQS)
= Values are those that exceed the Gross Contaminant Levels
NA -- Not Analyzed
NM -- Not Measured
NS -- Not Sampled
NF -- Not Found
NE -- Not Established
BQL -- Below Quantitation Limits
MW-7
MW-8
MW-10
MW-11
Information prior to 2008 obtained from Fuss & O'Neill, Inc.: Pre-Cap Groundwater Monitoring Report, dated October 2003
GCLs (ug/L)
NC2LGWQS (ug/L)
MW-14
DW-1
MW-9
MW-12
MW-13
ID Date Well Screened Well Well Depth of Product Groundwater
Number Installed Depth Interval Diameter Elevation Groundwater Thickness Elevation
(feet TOC) (feet TOC) (inches) (feet TOC) (feet TOC) (feet) (feet TOC)
10/12/2017 10/12/2017
MW-1 11/14/2001 35 15-35 2 649.22 26.14 N/a 623.08
MW-2 11/15/2001 35 15-35 2 649.49 26.23 N/a 623.26
MW-3 3/13/2002 40 20-40 2 649.39 25.94 N/a 623.45
MW-4 3/13/2002 40 20-40 2 649.32 26.16 N/a 623.16
MW-5 1/20/2003 35 10-35 2 643.41 Not Measured N/a Not Measured
MW-6 1/21/2003 40 6-40 2 648.94 25.52 N/a 623.42
MW-7 1/22/2003 40 15-40 2 649.75 26.45 N/a 623.30
MW-8 1/22/2003 40 15-40 2 640.88 22.90 N/a 617.98
MW-9 1/22/2003 35 6-35 2 636.18 Not Found N/a Not Found
MW-10 1/22/2003 40 10-40 2 650.05 19.27 N/a 630.78
MW-11 1/21/2003 40 10-40 2 648.62 18.55 N/a 630.07
MW-12 2/12/2003 35 10-35 2 634.10 Not Found N/a Not Found
MW-13 2/12/2003 35 10-35 2 636.20 Abandoned N/a Abandoned
MW-14 7/31/2003 45 3-45 6 -- Not Measured N/a Not Measured
*DW-1 3/18/2002 90 85-90 2 649.75 26.92 N/a 622.83
* -- Monitoring well DW-1 is a deep Type III monitoring well and was not used for the determination of groundwater elevation contours.
N/a -- Not Applicable. Product was not present in the monitoring wells.
Information obtained from Fuss & O'Neill, Inc.: Pre-Cap Groundwater Monitoring Report, dated October 2003
TABLE B-7
MONITORING WELL CONSTRUCTION INFORMATION
DUNCAN'S MINI MART
APPENDIX
FIELD DATA SHEETS
APPENDIX
LABORATORY DATA SHEETS AND CHAIN-OF-CUSTODY RECORD