AS-3241_28414_CA_FPR_20210913

September 10, 2021
Mr. Dan Murphy
North Carolina Department of Environmental Quality
Division of Waste Management, UST Section
Asheville Regional Office
2090 U.S. Highway 70
Swannanoa, North Carolina 28778
Subject:Free Product Recovery Report
Speedway 7972 (Former WilcoHess 353)
502 Wilkseboro Boulevard SE
Lenoir, Caldwell County,North Carolina
Incident No: 28414
Mid-Atlantic Project No.: R1760.23
Dear Mr. Murphy:
Speedway LLC is pleased to present this report of environmental services for the
above-referenced facility. This report documents the results of the Aggressive Fluid
Vapor Recovery (AFVR) event activities conducted at the site in June 2021. If you have
any questions, please feel free to contact me at [phone] or Cameron Moore with
Mid-Atlantic Associates, Inc. at [phone].
Sincerely,
SPEEDWAY LLC
Charles A. Chiara
Environmental Representative
Located at:
502 Wilkseboro Boulevard SE
Lenoir,Caldwell County,North Carolina
Prepared for (Users):
Speedway LLC
500 Speedway Drive
Enon,Ohio 45323
919-516-8069
Report Date: September 10, 2021
MAA Project: 000R1760.23
Free Product
Recovery Report
Speedway 7972
(Former WilcoHess
353)
Facility ID#:0-033119
502 Wilkseboro
Boulevard SE
Lenoir,North Carolina
Incident No.:28414
Prepared By:
Mid-Atlantic Associates Inc.
409 Rogers View Court,
Raleigh,North Carolina 27610
[phone]
FREE PRODUCT RECOVERY REPORT
A. SITE INFORMATION
1. Site Identification
Date of Report:September 10, 2021
Facility ID:0-033119 UST Incident No. (if known):28414
Site Risk:Intermediate Site Rank:I-184-D Land Use Classification:Commercial/Industrial
Site Name:Speedway 7972 (Former WilcoHess 353)
Site Location:502 Wilkseboro Boulevard SE,Lenoir,North Carolina
Nearest City/Town:Lenoir County:Caldwell
Latitude:35.916295 N Longitude:-81.516153 W
Description of Geographical Data
Point:
Site Property
Location Method:Google Earth
2. Information about Contacts Associated with the Leaking UST System
UST Owner:Speedway LLC
Address:500 Speedway Drive, Enon, Ohio 45323 Phone:[phone]
UST Operator:Same as UST Owner
Address:Phone:
Property Owner:Same as UST Owner
Address:Phone:
Property Occupant:Same as UST Owner
Address:Phone:
Consultant/Contractor:Mid-Atlantic Associates, Inc.
Address:409 Rogers View Ct., Raleigh, NC 27610 Phone:[phone]
3. Release Information
Date Discovered:July 18, 2006
Estimated Quantity of Release:Unknown
Cause of Release:Unknown, gasoline free product found in tank pit observation wells
Source of Release (Piping/UST):Gasoline UST system
Sizes and contents of UST system(s) from which release occurred:Three 12,000-gallon gasoline USTs (source is unclear)
I,Cameron D. Moore, PG ,a Licensed Geologist for Mid-Atlantic Associates, Inc., do certify that the information contained
in this report is correct and accurate to the best of my knowledge. Mid-Atlantic Associates, Inc. is licensed to geology and
engineering in North Carolina. The certification numbers of the corporation are:C-186 and F-0967.
(Please affix seal and signature)
TABLE OF CONTENTS
1.0 BACKGROUND INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
2.0 FIELD ACTIVITIES AND RESULTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2.1 Free Product Thickness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2.2 Recovered Free Product . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
3.0 REGULATORY STATUS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
4.0 CONCLUSIONS AND RECOMMENDATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
DRAWINGS
Drawing 1.1 - Topographic Site Map
Drawing 1.2 - Site and Monitoring Well Location Map
APPENDICES
Tables
Appendix A Monitoring Well Construction Record for MW-1
Appendix B Aggressive Fluid/Vapor Recovery Notes
Appendix C AFVR Event Gasoline Emissions Worksheets
Appendix D Material Manifest and Certificate of Disposal
1.0 BACKGROUND INFORMATION
The subject site is the Speedway 7972 (former WilcoHess 353) located at 502
Wilkesboro Boulevard SE in Lenoir, North Carolina (Drawing 1.1). On October 1, 2014,
Speedway LLC acquired the site from Hess Corporation, who had previously acquired
the site from WilcoHess LLC. The site is currently in use as a convenience store and retail
petroleum dispensing facility. The facility operates three 12,000-gallon gasoline USTs,
one 12,000-gallon diesel UST, and one 10,000-gallon kerosene UST. The layout of the
facility is shown on Drawing 1.2.
Gasoline free product was historically present on the water table in monitoring wells
MW-1 and MW-8.Free product, which had not been detected at the site since September
2012, was present in MW-1 during Mid-Atlantic's June 8, 2021 visit to perform
semi-annual groundwater monitoring. The site is currently classified as intermediate risk
due to the presence of a downgradient surface water body (UT to Lower Creek) located
within 500 feet of the source area of the release. The UT to Lower Creek is located
approximately 125 feet south and hydraulically downgradient of the source area of the
release, and petroleum-related constituents have historically been detected in surface
water samples collected from this drainage feature at concentrations exceeding the
NCSWQS. The approximate surface water sampling locations are identified on Drawing
1.2.
Following discovery of free product during the sampling event on June 8, 2021, a
Trust Fund Pre-Approval Task Authorization (TA #23) was obtained on June 10, 2021
and covered an AFVR event and the gauging/sampling of one groundwater monitoring
well.This report documents these activities.
The opinions included herein are based on our experience and the information obtained
during the study.This report is based on limited observations made on the dates noted
using procedures described herein. If additional information becomes available, we
request the opportunity to review the information, reassess the potential environmental
concerns, and modify our conclusions, if appropriate.
2.0 FIELD ACTIVITIES AND RESULTS
2.1 Free Product Thickness
Monitoring well MW-1 was gauged during the June 8, 2021 groundwater sampling event
and over four feet of free product was detected (an oil/water interface probe was not on
site so the exact thickness is not know, but the bailer was completely full of product).
Free product was hand-bailed from the well. Well MW-1 was gauged again for free
product thickness on June 14, 2021, prior to the start of the AFVR event. Free product
was measured at a thickness of approximately 2.15 feet prior to the start of the event
and appeared dark and thick. Free product was not detected in well MW-1 immediately
following completion of the AFVR event. However, on July 15, 2021, a thickness of
3.38 feet was detected during a mobilization to gauge/sample MW-1. Based on this
thickness,a groundwater sample was not collected. The well construction record for
monitoring well MW-1 (from which product was removed during the AFVR event) is
provided in Appendix A.
2.2 Recovered Free Product
As noted previously, free product was bailed from well MW-1 upon its discovery on June
8, 2021. Approximately five gallons of free product/water mixture was bailed from the well
and containerized in a 55-gallon drum on site.
The AFVR event was conducted over an 8-hour period on June 14, 2021. AFVR
services were provided by Hazmat Emergency Response and Remediation (HERR), Inc.
of Thomasville, North Carolina. The results of the free product recovery activities are
documented in HERRs “Aggressive Fluid/Vapor Recovery Notes” provided in Appendix
B. A summary of the AFVR event is provided in Table 2.1. As summarized, approximately
168 gallons of petroleum-contaminated water were recovered during the AFVR event.
The estimated amount of free product recovered from emissions during the AFVR event
was calculated at approximately 0.14 gallons. This amount is believed to be an
underestimate as the AFVR contractor did not utilize a sampling port for collection of
vapor measurements from the truck exhaust and a strong odor of gasoline was noted
to be venting from the truck.The amount of free product recovered as liquid was not
available, as the thickness within the truck could not be gauged. The calculations for
converting vapor emissions (in pounds) to gallons of gasoline are provided in Appendix
C.
The Material Manifest and Certificate of Disposal for disposition of recovered
groundwater are included in Appendix D. The material was transported to HERR's facility
in Thomasville, North Carolina for disposal.
Free Product Recovery Report
Speedway 7972 (Former WilcoHess 353)
Lenoir, North Carolina
September 10, 2021
Page 2
3.0 REGULATORY STATUS
A Groundwater Monitoring Report dated September 3, 2021 that documents the
semi-annual groundwater sampling event and post-AFVR groundwater sampling attempt
was prepared by Mid-Atlantic for submittal to NCDEQ. The report recommended the
performance of additional 8-hour AFVR events to recover free product from
MW-1.However, the use of Mobile Multi Phase Extraction (MMPE) should also be
considered as this method appears to have worked well at this site in the past. Any future
free product recovery activities will be approved by the NCDEQ. Free product will need
to be completely removed from the water table before risk classification reduction can be
considered.
4.0 CONCLUSIONS AND RECOMMENDATIONS
The June 14, 2021 AFVR event removed approximately 0.14 gallons of gasoline free
product as vapor (this may be an underestimate) and 168 gallons of
petroleum-contaminated fuel/water mixture.The amount of free product recovered as
liquid was not available.A subsequent mobilization to sample MW-1 following the AFVR
event was attempted on July 15, 2021. However, free product was again detected in
MW-1 with a thickness of 3.38 feet and a groundwater sample was not collected.The
results of these activities will be used to evaluate the need/use of additional free product
recovery methods for the site.Mid-Atlantic recommends next utilizing MMPE technology
due to its historical success at this site.
Free Product Recovery Report
Speedway 7972 (Former WilcoHess 353)
Lenoir, North Carolina
September 10, 2021
Page 3
DRAWINGS
DRAWN BY: DATE:
ENG. CHECK:
JOB NO:DRAFTCHECK: GIS NO:
SITE LOCATION
´
1:24,000SCALE:
§¨¦I- 40
Boone
Newton
Lenoir
HickoryMorganton
Cornelius
Wilkes
Burke
Caldwell
Catawba
Avery
Iredell
Watauga
Ashe
Lincoln
McDowell
Carter
Alexander
Rutherford
Johnson
0 2,000 4,0001,000 Feet
REFERENCES:1. USGS TOPOGRAPHIC QUADRANGLE:LENOIR, NC - 20162. INSET MAP DATA DOWNLOADED FROM DATA.GOV
AREA SHOWN WITHINNORTH CAROLINA
TOPOGRAPHIC SITE MAPSPEEDWAY 7972(FORMER WILCOHESS 353)502 WILKESBORO BLVD SELENOIR, NORTH CAROLINA APPROVAL:
AUGUST 2021
05G-R1760.23-01DWG NO: 1.1
CONTOUR INTERVAL = 40 FEET
RSM
000R1760.23 GMH
GMH
TABLES
WELL ID
CASING
DIAMETER
(INCHES)
PRODUCT
THICKNESS
BEFORE AFVR
(FEET) - 6/14/21
PRODUCT
THICKNESS
AFTER AFVR
(FEET) - 6/14/21
WATER
REMOVED
(GALLONS)
FREE PRODUCT
REMOVED
(GALLONS AS
LIQUID)
FP REMOVED
(GALLONS AS
VAPOR)
MW-1 2 2.15 0.00 168 NA 0.14*
Notes:
AFVR - Aggressive Fluid Vapor Recovery
NA - Information not available
* - Gallons as vapor calculated using pollutant mass removal rate of VOC's as gasoline
TOTAL GALLONS FREE PRODUCT REMOVED = 0.14
TABLE 2.1
SUMMARY OF AFVR EVENT
SEPTEMBER 9, 2021
SPEEDWAY 7972
MID-ATLANTIC JOB NO. 000R1760.23
LENOIR, NORTH CAROLINA
APPENDIX A MONITORING WELL CONSTRUCTION RECORD FOR
MW-1
APPENDIX B AGGRESSIVE FLUID/VAPOR RECOVERY NOTES
APPENDIX C AFVR EVENT GASOLINE EMISSIONS WORKSHEETS
AFVR EVENT GASOLINE EMISSIONS WORKSHEET
AGGRESSIVE FLUID VAPOR RECOVERY EVENT
DRY STANDARD CUBIC FEET PER MINUTE (DSCFM) AIR FLOW CALCULATIONS (Qstd)
NOTES
Page 1 of 3
AFVR EVENT GASOLINE EMISSIONS WORKSHEET
EQUATIONS
EMISSION CALCULATIONS
Page 2 of 3
AFVR EVENT GASOLINE EMISSIONS WORKSHEET
(Continued)
Total emissions in pounds 0.87
NOTES # of Gasoline, per Gallon 6.25
0.14
Mc = 12.01 mg/mg-mole, molecular weight of carbon
EQUATIONS
Notes and References (by Mid-Atlantic Associates, 6/17/2008):
1. Excel spreadsheet produced by UST Section, Division of Waste Management, N.C. Department of Environment and Natural Resources (DENR)
during the 1990s. April 2001 DENR guidance for corrective action contains similar information as in spreadsheet
2. Water Vapor Weight % from Pyschrometric chart for air-water vapor mixtures contained in Perry's Chemical Engineers' Handbook, 1973.
3. Conversion factor for pounds of gasoline emisson to gallons of liquid gasoline reported by NCDENR, 2001, and obtained from Automotive Fuels
Page 3 of 3
APPENDIX D MATERIAL MANIFEST AND CERTIFICATE OF DISPOSAL