WS-3657_11688_CA_RMR_20120111

ACTIVE REMEDIATION MONITORING REPORT (INITIAL)

MCGUIRE’S GROCERY
804 SOUTH MEBANE STREET
BURLINGTON, ALAMANCE COUNTY, NORTH CAROLINA
INCIDENT NO. 11688
RANKING: INTERMEDIATE

Prepared For:

Mr. Michael Tompkins
Midway Oil & Gas Company, Inc.
P.O. Box 99
Mebane, North Carolina 27302

Prepared By:

Progress Environmental, Inc.
P.O. Box 5884
Winston-Salem, North Carolina 27113

Progress Project 101165.002

January 11, 2012

January 11, 2012

Mr. Waddell Watters
North Carolina Department of Environment and Natural Resources
UST Section
585 Waughtown Street
Winston-Salem, North Carolina 27107

Subject: Active Remediation Monitoring Report (Initial)
McGuire’s Grocery
804 South Mebane Street
Burlington, Alamance County, North Carolina
Risk Classification: Intermediate
Groundwater Incident No. 11688
Progress Project No. 101165.002

Dear Mr. Watters:

On behalf of Midway Oil & Gas Company, Inc., Progress Environmental, Inc. (Progress) is
submitting this Active Remediation Monitoring Report (Initial) for the above-referenced site.
Included in this report is a description of the field activities, the results obtained, and the conclusions
and recommendations.

This report has been prepared in general accordance with the Underground Storage Tank Section
guidelines presented in the NCDENR Guidelines for Assessment and Corrective Action for UST
Releases dated December 1, 2008.

We appreciate your consideration and cooperation in the submission of this report. If you have any
questions concerning this report please feel free to contact us at [phone].

Sincerely,

PROGRESS ENVIRONMENTAL, INC.

Jason T. Ricks Jeffrey A. Ballsieper, L.G.
Senior Environmental Scientist Director of Environmental Services
Licensed NC 1653

Attachments:

cc: Midway Oil & Gas Company, Inc.

January 11, 2012

Mr. Michael Tompkins
Midway Oil & Gas Company, Inc.
P.O. Box 99
Mebane, North Carolina 27302

Subject: Active Remediation Monitoring Report (Initial)
McGuire’s Grocery
804 South Mebane Street
Burlington, Alamance County, North Carolina
Risk Classification: Intermediate
Groundwater Incident No. 11688
Progress Project No. 101165.002

Dear Mr. Tompkins:

Progress Environmental, Inc (Progress) is pleased to submit this Active Remediation Monitoring
Report (Initial) for the McGuire’s Grocery site in Burlington, North Carolina. The objective of the
assessment was to complete a mobile multi-phase extraction event, collect and analyze groundwater
samples at the subject site, assess potential risks to human health and the environment, and
recommend whether additional assessment may be necessary at the site.

This report is intended for the use of Midway Oil & Gas Company, Inc., only. The contents should
not be relied upon by other parties without the express written consent of Progress. The findings are
relevant to the dates of our site work and should not be relied upon to represent site conditions on
other dates.

We appreciate your consideration and cooperation in the submission of this report. If you have any
questions concerning this report please feel free to contact us at [phone].

Sincerely,

PROGRESS ENVIRONMENTAL, INC.

Jason T. Ricks Jeffrey A. Ballsieper, L.G.
Senior Environmental Scientist Director of Environmental Services
Licensed NC 1653

Attachment: Active Remediation Monitoring Report and Appendices
Active Remediation Monitoring Report (Initial) January 11, 2012
McGuire’s Grocery Site, Burlington, North Carolina Progress Project 101165.002

TABLE OF CONTENTS

A. SITE IDENTIFICATION............................................................................................................1
B. MOBILE MULTI-PHASE EXTRACTION .............................................................................2
C. MONITORING WELL SAMPLING ........................................................................................3
D. LABORATORY RESULTS........................................................................................................3
E. CONCLUSIONS...........................................................................................................................4
F. RECOMMENDATIONS.............................................................................................................4
G. QUALIFCATIONS OF REPORT..............................................................................................4

FIGURES
Figure 1 -- Topographic Site Map
Figure 2 -- Site Plan
Figure 3 -- Groundwater Analytical Results Map
Figure 4 -- Benzene Isopleth Map
Figure 5 -- MTBE Isopleth Map
Figure 6 -- BTEX Isopleth Map

TABLE
Table 1A & 1B -- MMPE Results
Table 2 -- Summary of Detected Groundwater Analytical Results

APPENDIX
Material Manifest
Laboratory Data Sheets and Chain-of-Custody Record
Active Remediation Monitoring Report (Initial) January 11, 2012
McGuire’s Grocery Site, Burlington, North Carolina Progress Project 101165.002
2

The site is located at 804 South Mebane Street in Burlington, Alamance County, North Carolina
(Figure 1). McGuire’s Grocery formerly occupied the site and was used as a convenience store
that stored gasoline and kerosene for retail sale in on-site underground storage tanks (USTs). The
site is currently used as a convenience store; however, petroleum products are no longer stored in
USTs or aboveground storage tanks (ASTs) for retail sale. Three USTs were removed from the
site on December 6, 1993. Total petroleum hydrocarbons as gasoline at concentrations greater
than the action level of 10 mg/Kg were identified in soil samples collected during the UST closure.
A subsequent groundwater sample indicated groundwater impacts in excess of the North Carolina
2L Groundwater Quality Standards (NC2LGWQS). SPATCO Environmental, Inc. (SPATCO)
initiated Comprehensive Site Assessment (CSA) activities in July 1994. The on-site monitoring
wells installed at the site include one type III (MW-1) and five type II (MW-2 through MW-6)
monitoring wells installed in July 1994. Three additional type II monitoring wells (MW-7 through
MW-9) were installed in December 1994 and one type II monitoring well (MW-10) was installed
in January 1995. According to a Pre-CAP Groundwater Monitoring Report for the subject site
prepared by Fuss & O’Neill, Inc. (dated September 2003), NC2LGWQS were exceeded in
groundwater samples collected from monitoring wells MW-2, MW-3, MW-4, MW-6, and MW-7
for at least one or more of the following targeted compounds: benzene, ethylbenzene, toluene, total
xylenes, methyl-tert butyl ether (MTBE), diisopropyl ether (IPE), and naphthalene. In addition,
the Gross Contamination Level (GCL) for benzene was exceeded in the groundwater sample
collected from monitoring well MW-3. According to previous reports, the site is classified as
intermediate risk due to the presence of nearby surface waters including Willow Brook Creek
(approximately 110 feet west of the site) and an unnamed tributary stream (approximately 300 feet
south of the site) and the elevated concentration of benzene in the groundwater sample collected
from monitoring well MW-3. The Fuss & O’Neill, Inc. Pre-CAP Groundwater Monitoring Report
(dated September 2003) recommended the implementation of a mobile multi-phase extraction
(MMPE) event at the subject site.

In June 2011 Mr. Waddell Watters of the North Carolina Department of Environment and Natural
Resources (NCDENR) authorized an additional groundwater monitoring event at the subject site
(Pre-CAP Monitoring Report, Progress Project 101165.001, dated September 6, 2011). Note that,
during file review activities, Progress Environmental, Inc. (Progress) was unable to locate
documentation regarding the implementation of a MMPE event at the subject site by others except
for North Carolina Leaking UST Trust Fund documentation approving payment for the completion
of a MMPE event. Additionally, during on-site field activities, Progress noted the presence of an
additional monitoring well (MW-11) that may have been installed (by others) to facilitate the
extraction of impacted groundwater in the vicinity of monitoring well MW-3. Laboratory analysis
of the groundwater samples collected from monitoring wells MW-2, MW-3, MW-4, MW-6, MW-
7, and MW-11 detected targeted compounds above their respective NC2LGWQS. In addition, the
concentration of benzene detected in the groundwater sample collected from monitoring well MW-
11 exceeds its North Carolina risk-based GCL. Progress recommended completing a MMPE event
in an effort to further reduce the dissolved phase concentrations in the groundwater beneath the
site.

B. MOBILE MULTI-PHASE EXTRACTION
Progress completed a 96-hour MMPE event at the site. The MMPE event was conducted from
November 28 through December 2, 2011. Impacted groundwater was extracted from monitoring
well MW-11 during the event. The event extracted approximately 3,581 gallons of impacted
Active Remediation Monitoring Report (Initial) January 11, 2012
McGuire’s Grocery Site, Burlington, North Carolina Progress Project 101165.002
3

groundwater and 110.186 pounds (or 17.62 gallons) of petroleum product as vapor. The impacted
groundwater was temporarily stored in a tanker for proper, off-site disposal. A copy of the
Material Manifest is included in the Appendix. The MMPE calculation sheets are included as
Tables 1A and 1B.

C. MONITORING WELL SAMPLING
Progress collected groundwater samples from monitoring wells MW-2, MW-3, MW-4, MW-6,
MW-7, and MW-11 on December 22, 2011. The depth-to-groundwater from the top of each
monitoring well casing was measured prior to purging and sampling. According to information
provided in the CSA, groundwater flow direction beneath the site appears to be to the southwest.

The monitoring wells were purged by bailing an equivalent of three to five well 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 monitoring well 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 Research & Analytical Laboratories, Inc. (R&A) in Kernersville, North
Carolina for analysis.
D. LABORATORY RESULTS
R&A analyzed the groundwater samples for volatile organic compounds (VOCs) by Standard
Method 6200B. A summary of the groundwater analytical results is presented in Table 2 and on
Figure 3.
The groundwater analytical results were evaluated using the North Carolina Administrative Code
(NCAC) Title 15A NDCENR, Subchapter 2L, Section .0200, Classifications and Water Quality
Standards (North Carolina 2L Groundwater Quality Standards), the North Carolina risk-based
Gross Contamination Levels (GCLs), and the North Carolina 2B Surface Water Standards as
presented in the NCDENR Guidelines.
•••• Laboratory analysis of the groundwater sample collected from monitoring well MW-6 did
not detect targeted compounds above their respective NC2LGWQS.
•••• Laboratory analysis of the groundwater samples collected from monitoring wells MW-2,
MW-3, MW-4, MW-7, and MW-11 detected targeted compounds above their respective
NC2LGWQS and 2B Surface Water Standards.
•••• Laboratory analysis of the groundwater samples collected from monitoring wells MW-2,
MW-3, and MW-11 exceed their respective 2B Surface Water Standards by a factor of ten.
•••• The concentrations detected in the groundwater samples collected from select on-site
monitoring wells do not exceed their respective North Carolina risk-based GCLs.
A copy of the laboratory data sheets and chain-of-custody record is included in the Appendix.
Isopleth maps for benzene, MTBE, and total benzene, toluene, ethylbenzene and total xylenes
(total BTEX) are included as Figures 4 through 6, respectively.
Active Remediation Monitoring Report (Initial) January 11, 2012
McGuire’s Grocery Site, Burlington, North Carolina Progress Project 101165.002
4

E. CONCLUSIONS
Based on the results of this assessment, Progress concludes the following:

•••• Progress completed a 96-hour MMPE event at the site. The MMPE event was conducted
from November 28 through December 2, 2011.
•••• Progress collected groundwater samples from monitoring wells MW-2, MW-3, MW-4, MW-
6, MW-7, and MW-11 on December 22, 2011.
•••• Laboratory analysis of the groundwater sample collected from monitoring well MW-6 did
not detect targeted compounds above their respective NC2LGWQS.
•••• Laboratory analysis of the groundwater samples collected from monitoring wells MW-2,
MW-3, MW-4, MW-7, and MW-11 detected targeted compounds above their respective
NC2LGWQS and 2B Surface Water Standards.
•••• Laboratory analysis of the groundwater samples collected from monitoring wells MW-2,
MW-3, and MW-11 exceed their respective 2B Surface Water Standards by a factor of ten.
•••• The concentrations detected in the groundwater samples collected from select on-site
monitoring wells do not exceed their respective North Carolina risk-based GCLs.
•••• The total BTEX concentrations have decreased measurably in the groundwater samples
collected from on-site monitoring wells MW-2 (79.2%), MW-3 (96.6%), MW-4 (100%),
MW-7 (91.4%), and MW-11 (87.6%) since the August 2011 sampling event.
•••• The total benzene concentrations have decreased measurably in the groundwater samples
collected from on-site monitoring wells MW-3 (95.1%), MW-4 (100%), MW-7 (51%), and
MW-11 (93.8%) since the August 2011 sampling event.
•••• Please note, slight increases of benzene were detected in the groundwater samples collected
from monitoring wells MW-2 and MW-6 since the August 2011 sampling event.

F. RECOMMENDATIONS
Based on the results of this assessment, Progress recommends the following:

Although the site is ranked as Intermediate Risk due to a nearby surface water feature(s) and the
historic presence of petroleum-related compounds in excess of the applicable GCLs, it is the
opinion of Progress based on the current and historical groundwater data that the nearby surface
water feature(s) would not be expected to be impacted by the release as evidenced by the on-site
downgradient monitoring well historically not exhibiting detectable concentrations. Progress
recommends completing an additional sampling event to determine if the concentrations of
petroleum-related compounds rebound. Progress recommends collecting groundwater samples
from each of the existing monitoring wells in approximately three months and completing
groundwater modeling to determine the likely degradation extent of the plume of petroleum-related
compounds. No further work will be conducted pending pre-approval from your office.

G. QUALIFCATIONS OF REPORT
The activities and evaluative approaches used in this assessment are consistent with those normally
employed in hydrogeolgic projects of this type. Our evaluation of site conditions has been based
on our understanding of the site project information and the data obtained during our field
activities.

FIGURES

Figure 1
Topographic Site Map

McGuire’s Grocery
804 S. Mebane Street
Burlington, North Carolina
REV0DRAWING TITLEDRAWING NUMBERFigure No. 2BY DATEREVGRAPHIC SCALE1" = 45'LEGENDGroundwater Monitoring Well Location NEW45'0'45'90'Site PlanMcGuire's Grocery804 South Mebane StreetBurlington, North CarolinaDR.: JABJAN. 12CK.:APP'D.:SCALE: 1" = 45'PROGRESS NO.: 101165.002Property LineMW-2MW-1MW-3MW-4MW-8MW-5MW-6MW-10MW-7MW-9South Mebane StreetAvon Avenue
ConcreteConcreteMW-11P.O. Box 5884Winston-Salem, North Carolina 27113(336) 722-9999Progress Environmental, Inc.www.progressenvironmental.com
REV0DRAWING TITLEDRAWING NUMBERFigure No. 3BY DATEREVGRAPHIC SCALE1" = 45'LEGENDGroundwater Monitoring Well Location NEW45'0'45'90'Groundwater Analytical Results MapMcGuire's Grocery804 South Mebane StreetBurlington, North CarolinaDR.: JABJAN. 12CK.:APP'D.:SCALE: 1" = 45'PROGRESS NO.: 101165.002Property LineMW-2MW-1MW-3MW-4MW-8MW-5MW-6MW-10MW-7MW-9South Mebane StreetAvon Avenue
ConcreteConcreteMW-11P.O. Box 5884Winston-Salem, North Carolina 27113(336) 722-9999Progress Environmental, Inc.www.progressenvironmental.comMW-2 (12/22/2011)Benzene 31.0 ug/LEthylbenzene 407 ug/Ln-Butylbenzene 11.0J ug/LI-Propylbenzene 40.5 ug/LToluene 3.5J ug/L1,2,4 - Trimethylbenzene 415 ug/L1,3,5 - Trimethylbenzene 161 ug/LNaphthalene 114 ug/Lp-Isopropyltoluene 7.75J ug/Ln-Propylbenzene 65 ug/Lsec-Butylbenzene 9J ug/LTotal Xylenes 251 ug/LMW-3 (12/22/2011)Benzene 184 ug/LIPE 11.1 ug/LEthylbenzene 78.2 ug/LMTBE 320 ug/LNaphthalene 41.1 ug/LToluene 379 ug/L1,2,4 - Trimethylbenzene 6.0 ug/L1,3,5 - Trimethylbenzene 1.6J ug/LI-Propylbenzene 7.2 ug/Ln-Propylbenzene 16.4 ug/Lsec-Butylbenzene 2.8J ug/LTotal Xylenes 14.4 ug/LMW-4 (12/22/2011)1,2-Dichloroethane 0.99 ug/LIPE 0.46J ug/LMTBE 13.3 ug/Ltert-Butylbenzene 0.12JMW-6 (12/22/2011)Benzene 0.30J ug/LIPE 0.8 ug/LEthylbenzene 0.39J ug/LMTBE 6.69 ug/LI-Propylbenzene 0.41J ug/Ln-Propylbenzene 0.28J ug/Lp-Isopropyltoluene 0.49J ug/Lsec-Butylbenzene 0.79 ug/LTert-butylbenzene 0.20J ug/LMW-7 (12/22/2011)Benzene 3.77 ug/LEthylbenzene 19.0 ug/LNaphthalene 2.14 ug/LI-Propylbenzene 2.94 ug/Ln-Propylbenzene 3.46 ug/Lp-Isopropyltoluene 0.73 ug/Lsec-Butylbenzene 1.63 ug/L1,2,4 - Trimethylbenzene 7.63 ug/Ltert-Butylbenzene 0.35J ug/LTotal Xylenes 1.49 ug/LMW-11 (12/22/2011)Benzene 323 ug/LIPE 3.0J ug/LEthylbenzene 254 ug/LNapthalene 127 ug/Ln-Butylbenzene 19.3 ug/LI-Propylbenzene 31 ug/Ln-Propylbenzene 70 ug/Lp-Isopropyltoluene 13.3 ug/Lsec-Butylbenzene 9.75 ug/LToluene 85.5 ug/L1,2,4 - Trimethylbenzene 404 ug/L1,3,5 - Trimethylbenzene 134 ug/LTotal Xylenes 476 ug/L
REV0DRAWING TITLEDRAWING NUMBERFigure No. 4BY DATEREVGRAPHIC SCALE1" = 45'LEGENDGroundwater Monitoring Well Location NEW45'0'45'90'Benzene Isopleth MapMcGuire's Grocery804 South Mebane StreetBurlington, North CarolinaDR.: JABJAN. 12CK.:APP'D.:SCALE: 1" = 45'PROGRESS NO.: 101165.002Property LineMW-2MW-1MW-3MW-4MW-8MW-5MW-6MW-10MW-7MW-9South Mebane StreetAvon Avenue
ConcreteConcreteMW-1150 ppb100 ppbBQL* MW-1 was not sampledBQL184 3.77 323 31.0 0.30JP.O. Box 5884Winston-Salem, North Carolina 27113(336) 722-9999Progress Environmental, Inc.www.progressenvironmental.com
REV0DRAWING TITLEDRAWING NUMBERFigure No. 5BY DATEREVGRAPHIC SCALE1" = 45'LEGENDGroundwater Monitoring Well Location NEW45'0'45'90'MTBE Isopleth MapMcGuire's Grocery804 South Mebane StreetBurlington, North CarolinaDR.: JABJAN. 12CK.:APP'D.:SCALE: 1" = 45'PROGRESS NO.: 101165.002Property LineMW-2MW-1MW-3MW-4MW-8MW-5MW-6MW-10MW-7MW-9South Mebane StreetAvon Avenue
ConcreteConcreteMW-11100 ppbBQL* MW-1 was not sampled50 ppb32013.36.69P.O. Box 5884Winston-Salem, North Carolina 27113(336) 722-9999Progress Environmental, Inc.www.progressenvironmental.com
REV0DRAWING TITLEDRAWING NUMBERFigure No. 6BY DATEREVGRAPHIC SCALE1" = 45'LEGENDGroundwater Monitoring Well Location NEW45'0'45'90'BTEX Isopleth MapMcGuire's Grocery804 South Mebane StreetBurlington, North CarolinaDR.: JABJAN. 12CK.:APP'D.:SCALE: 1" = 45'PROGRESS NO.: 101165.002Property LineMW-2MW-1MW-3MW-4MW-8MW-5MW-6MW-10MW-7MW-9South Mebane StreetAvon Avenue
ConcreteConcreteMW-11* MW-1 was not sampled500 ppb250 ppbBQL1,138.50276.60692.524.260.69BQLP.O. Box 5884Winston-Salem, North Carolina 27113(336) 722-9999Progress Environmental, Inc.www.progressenvironmental.com

TABLE
DateExtraction PointsElapsed Time (Hours)Vacuum(inches of Hg)Measured FlowVelocity(ft/min)Pipe ID(in)Temp(deg F)Temp (deg C)Rel. Humid(%)Water Vapor(Wt %)Water Vapor (Vol %)Qstd(flow)11/28/2011Start22.5 24.0 1194.268 2 79.2 26.2 89.8 0.01932 0.0300 24.711/29/20112421.0 28.0 1393.312 2 94.3 34.6 87.3 0.03171 0.0483 27.511/30/20114824.0 24.0 1194.268 2 102.9 39.4 88.5 0.04337 0.0650 22.812/1/20117224.0 24.0 1194.268 2 95.80 35.4 87.4 0.03337 0.0508 23.512/2/20119624.024.01194.268291.5533.191.60.030300.046323.8CalculationsQstdBwsBwswPerry’s Chemical Engineers’ Handbook)VATs = stack temperature in degrees Rankin (Ro), Ro = Fo + 460 (use average value)= (60 sec/min) (1-Bws) (V) (A) (528 Ro / Ts)= (Bwsw/18 lb-mole H2O) / [(1/28.84 lb-mole dry air) + (Bwsw/18 lb-mole H2O)]= lb. of water per lb. of dry air (use high temperature psychrometric chart for air-water vapor mixtures in = velocity in ft/sec (obtain with hot wire anenometer or pitot tube (use average value)Coss-sectional area of discharge stack in square feet at sampling locationMCGUIRE'S GROCERYMW-11TABLE 1AMMPE RESULTSDATE: 1/12/12NCDENR INCIDENT NO. 11688ACTIVE REMEDIATION MONITORING REPORT (INITIAL)
Elapsed Time(min)Flow(DSCFM)PPM Measured(ppm)K(#C-gas)PPMgCc:m(mg/dsm^3)Cc(lb/dscf)PMRc(lb/hr)PMRg (lb/hour)PMR(lb)1 24.7 5,000 4 20,000 10636 0.00066 0.985 1.140 27.3511440 27.5 5,000 4 20,000 10636 0.00066 1.097 1.270 30.4782880 22.8 5,000 4 20,000 10636 0.00066 0.910 1.053 25.2764320 23.5 5,000 4 20,000 10636 0.00066 0.936 1.083 25.9855760 23.8 5,000 4 20,000 10636 0.00066 0.947 1.096 1.0965820TOTAL EMISSIONS IN POUNDS110.186CalculationsPPMw= “wet” concentrationPPMd= “dry” concentrationPPMc = PPMv, volumetric concentration of VOC emissions as carbon, dry basis, at STP Cc:mCc= Cc:m (62.43 x 10-9 lb-m3/mg-ft3), lb/dscf, mass concentration of VOC emissions as carbon, dry basis, at STP PMRc= Cc (Qstd) (60 min/hr), lb/hr, pollutant mass removal rate of VOC’s as carbon PMRg= (PMRc) (Mg/Mcg), lb/hr, pollutant mass removal rate of VOC’s as gasoline K = number of carbons in calibration gas (methane K=1, propane K=3, hexane K=6)Mc = 12.01 mg/mg-mole, molecular wt. of carbon K3 = 24.07 dsm3/106 mg-mole, mass to volume conversion factor at STPCc = lb/dscf, mass concentration of VOC emissions as carbon, dry basis, at STPMg= 103 mg/mg-mole, molecular wt. of gasoline (value may vary depending on contaminant)Mcg = 89 mg/mg-mole, weight of carbon in gasoline moleculeAverage values for molecular weight of gasoline, weight of carbon in gasoline molecule, and the conversion of pounds of gasoline emissions to gallons of liquid gasoline are from Automotive Fuels Reference Book, by K. Owens and T. Coley, Second Edition, 1995, published by the Society of Automotive Engineers. NOTE: To convert lbs. of gasoline emissions to gallons of liquid gasoline, divide by 6.25 lbs/gal.= PPMc (Mc/K3) ACTIVE REMEDIATION MONITORING REPORT (INITIAL)TABLE 1BMMPE RESULTSDATE: 1/12/12NCDENR INCIDENT NO. 11688FORMER MCGUIRE'S GROCERY
Well IDDate Collected (mm/dd/yy)Depth to Water (Ft. Below TOC)08/01/1115.9119.3BQL <12.51,690<12.5473BQL <12.5182BQL <12.54.0J<1251,270 290<12.5 <1,2501,61012/22/1115.7031.0BQL BQL407BQL114 11.0J 40.5 65 7.75J 9J 3.5JBQL415 161BQL BQL25108/01/1114.263,700BQL <501,140 165 634BQL67 172BQL <50379<5001,390 409<50 <5,0002,74012/22/1113.95184BQL11.1 78.232041.1BQL7.2 16.4BQL2.8JBQL BQL6.0 1.6JBQL BQL14.408/01/1112.007.04BQL0.57 7.01 15.4 3.77BQL1.50 1.51BQL0.65 0.38J 1.07J 0.62BQL0.25J 488 2.0212/22/1111.46BQL0.99 0.46JBQL13.3BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL0.12JBQL BQL08/01/1114.32BQL BQL1.95 0.22J 31.3 0.87BQL0.33J 0.16JBQL1.90 0.12JBQL1.13JBQL BQL BQL0.26J12/22/1114.110.30JBQL0.8 0.39J 6.69BQL BQL0.41J 0.28J 0.49J 0.79BQL BQL BQL BQL0.20JBQL BQL08/01/1114.747.69BQL BQL198BQL50.9BQL16.1 21.9BQL3.03 0.96BQL88.65.37BQL BQL75.112/22/1115.423.77BQL BQL19.0BQL2.14BQL2.94 3.46 0.73 1.63BQL BQL7.63BQL0.35JBQL1.4908/01/1114.435,150BQL <501,080<50580BQL65 167BQL <50286<501,390 401<50 <5,0002,65012/22/1114.76323BQL3.0J 254BQL127 19.3 31 70 13.3 9.75 85.5BQL404 134BQL BQL4761 0.4 70 600 20 6 70 70 70 25 70 600 700 400 400 70 NS 5005,000 400 70,000 84,500 20,000 15,500 6,900 25,000 30,000 NS 70,000 257,500 700,000 28,500 2,500 15,000 NS 87,5001.19 0.38 13,000 97 19 330 LD 1,600 1,700 LD LD 11 LD 390 630 NS NS 670 = Values are those that exceed the 2L Groundwater Quality Standards and/or the 2B Surface Water Standards = Values are those that exceed the Gross Contaminant LevelsBQL = Below laboratory quantitation limitsResults are reported in µg/lµg/L = micrograms per literGCL = gross contamination levelTOC = top of casingNS = No StandardNA = Not AnalyzedJ = concentration detected below laboratory detection standardS = Toxicity Exceeds Solubility N = Narrative StandardItalics = Values are those that exceed 2B Surface Water Standards by a factor of tenLD = Limited DataMW-11MW-2MW-3MW-4MW-6MW-7Naphthalene1,2,4-TrimethylbenzeneDiisopropyl ether (IPE)1,2-Dichloroethane1,3,5-TrimethylbenzeneCarbon Disulfiden-Propylbenzenen-Butylbenzenep-IsopropyltolueneTotal XylenesToluene2B Surface Water Standards (µg/l)Table 2Summary of Detected Groundwater Analytical Results McGuire's Grocery SiteNCDENR Incident No. 11688Active Remediation Monitoring Report (Initial)sec-ButylbenzeneMTBEAnalytical MethodGCL (µg/l)BenzeneContaminant of Concern2L Standard (µg/l)EPA 6200BTert-amyl AlcoholTert-butylbenzeneI-PropylbenzeneEthylbenzene

APPENDIX