WS-10202_45327_CA_FPR_20200528

P.O. Box 5884 • Winston-Salem, NC 27113-5884
Office 336.722.9999 • Fax [phone]
May 28, 2020
Mr. Don McIver
Quality Oil Company, LLC
1540 Silas Creek Parkway
Winston-Salem, North Carolina 27127
Subject: Free Product Recovery Report
Quality Mart #18
3398 Robinhood Road
Winston-Salem, Forsyth County, North Carolina
Progress Project No. 1020024.002
Dear Mr. McIver:
Progress Environmental Group, Inc. (Progress) is pleased to submit this Free Product Recovery Report for
the Quality Mart #18 in Winston-Salem, Forsyth County, North Carolina. The objective of the assessment
was to install a monitoring well to determine the presence of free product and/or collect and test a groundwater
sample from a monitoring well installed in the vicinity of a gasoline underground storage tank (UST) where
a recent release was previously documented.
Utilizing a truck-mounted drill rig, 3D Environmental Investigations, LLC installed a Type II monitoring well
(MW-20) immediately adjacent to the UST pit on May 7, 2020. Progress supervised the installation of the
monitoring well. Evidence of the water table was observed in the soil samples and drill cuttings at an
approximate depth of 30 feet below land surface (bls).
3D Environmental Investigations, LLC installed a two-inch temporary monitoring well to an approximate
depth of 40 feet bls with 15 feet of 0.01 slotted Schedule 40 PVC screen using the solid stem auger drilling
method. Progress allowed the monitoring well adequate time to equilibrate prior to purging and sampling.
Evidence of free product was not documented at the time of sampling. A groundwater sample was collected
using a disposable bailer and new length of cord and transferred to laboratory containers.
The groundwater samples were decanted into laboratory-supplied bottles and placed into a cooler packed
with ice. The cooler was delivered under chain-of-custody to Research and Analytical Laboratories, Inc.
(R&A) in Kernersville, North Carolina for testing for volatile organic compounds (VOCs) using Standard
Method 6200B, volatile petroleum hydrocarbons (VPH) using Massachusetts Department of Environmental
Protection, for ethylene dibromide (EDB) using EPA Method 504.1, and for lead using the Standard
Method. A summary of the groundwater sample analytical results is included in Table B-4.
Laboratory analysis of the groundwater sample collected from monitoring well MW-1 detected benzene
(2,550 ug/L), ethylbenzene (3,070 ug/L), I-propylbenzene (143 ug/L), naphthalene (480 ug/L), n-
propylbenzene (305 ug/L), p-isopropyltoluene (27.5 ug/L), toluene (19,000 ug/L), 1,2,4-trimethylbenzene
(2,170 ug/L), 1,3,5-trimethylbenzene (582 ug/L), total xylenes (15,500 ug/L), and ethanol (815,000 ug/L)
at concentrations exceeding their respective North Carolina 2L Groundwater Quality Standards
(NC2LGWQS). None of the targeted compounds detected in the groundwater sample from monitoring
well MW-20 exceeds their respective Gross Contamination Levels (GCLs).
Free Product Recovery Report
Quality Mart #18
3398 Robinhood Road
Winston-Salem, Forsyth County, North Carolina
Progress Project No. 1020024.002
2
Progress recommends providing a copy of this report to the UST Section of the North Carolina Department of
Environmental Quality (NCDEQ) for their records.
This report is intended for the use of Quality Oil Company, LLC, 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.
Progress appreciates the opportunity to provide our environmental services. If you have any questions or if
we may be of further service, please contact the undersigned at [phone].
Sincerely,
PROGRESS ENVIRONMENTAL GROUP, INC.
Joseph S. Lawson, III Jeffrey A. Ballsieper, L.G.
Director of Ecological Services Director of Environmental Services
NC License #1653
Attachment: Figures
Table
Laboratory Test Report
Figure 1
Topographic Site Map
Quality Mart No. 18
3398 Robinhood Road
Winston-Salem, North Carolina
P.O. Box 5884
Winston-Salem, NC 27113
Telephone: [phone]
Fax: [phone]
www.progressenvironmental.com USGS 7.5 Minute Series Topographic Map
Contour Interval: 10 feet
Scale: 1” = 2000’
West Winston-Salem, N.C.
Date: 2016
Project: Quality Mart #18
Client: Quality Oil Company
Progress Job #: 1020024.002
Date: May 2020
SITE
Site
ProgressENVIRONMENTAL GROUP, INC.JSL1020024.002MAY 2020JABAS SHOWNMAY 2020Figure 2.SKFP.O. Box 5884WINSTON-SALEM, NORTH CAROLINA 27113PHONE [phone] FAX [phone]FIGURE 2SITE MAPQUALITY MART #183398 ROBINHOOD ROADWINSTON-SALEM, NORTH CAROLINAPROJECTMW-20
CURRENT UST LOCATION
APPROXIMATE LOCATION OF MONITORING WELL
MW-20
504.1
Well ID Date Collected
(m/dd/yy)
Depth to Water
(Ft. Below TOC)
MW-20 5/8/2020 27.42 2,550 3,070 36.5 143 480 305 27.5 19,000 2,170 582 15,500 815,000 BQL BQL 51,000 77,400 14,100
1 600 70 70 6 70 25 600 400 400 500 4,000 15 0.02 400 700 200
5,000 84,500 70,000 25,000 6,000 30,000 11,700 260,000 28,500 25,000 85,500 4,000,000 15,000 50 NS NS NS
= Detected Concentration Above the North Carolina 2L Groundwater Quality Standard (NC2LGWQS)
= Detected Concentration Above the Gross Contamination Level
BQL = Below Quantitation Limits
Results are reported in µg/l
µg/L = micrograms per liter
GCL = gross contamination level
TOC = top of casing
NS = No Standard
N/A = Not Applicable
VPH = Volatile Petroleum Hydrocarbons EthylbenzeneIPEp-Isopropyl toluene6200B
BenzeneI-PropylbenzeneC9-C12 AliphaticsGCL (µg/l)
Contaminant of Concern
NC2LGWQS (µg/l)NaphthaleneEthanolC9-C10 AromaticsTable B-4
Summary of Groundwater Analytical Results
Free Product Recovery Report
VPH
Quality Mart #18
NCDEQ Incident No. 45327
Analytical Method
n-PropylbenzeneTolueneTotal Xylenes1,2,4-Trimethylbenzene1,3,5-TrimethylbenzeneC5-C8 AliphaticsLeadEDB