MO-2777_3430_CA_MRP_20200211_MW9installation

February 11, 2020
North Carolina Department of Environmental Quality
Division of Waste Management, Underground Storage Tank Section
1646 Mail Service Center
Raleigh, North Carolina 27699-1646
Attention: Ms. Sharon Ghiold via email: [e-mail]
Reference: Corrective Action Performance Report
Becky’s Grocery, Incident No. 3430, MO-2777
20518 Ridgecrest Road, Locust, Stanly County, North Carolina
S&ME Project No. 4305-18-035B
Dear Ms. Ghiold:
S&ME, Inc., (S&ME) presents this report in accordance with the North Carolina Department of Environmental
Quality/S&ME Contract No. N17002 and S&ME Proposal No. 43-1700757B, dated October 15, 2019 as authorized
by Task Authorization No. 03, dated October 15, 2019.
Scope of Services
S&ME’s approved Scopes of Services for this Task Authorization included the installation of one monitor well in
the former dispenser island (MW-9) and measuring the relative top-of-casing elevations of the new monitor well
in relation to the existing site monitor wells. Additionally, S&ME proposed to collect a groundwater sample from
existing monitoring wells MW-1 and MW-3, and the new monitor well MW-9. The documentation of the
installation activities of MW-9 are submitted in this separate Corrective Action Performance Report. The results of
the groundwater monitoring activities are submitted in a separate Limited Groundwater Sampling Report. These
services were completed as proposed, which the exception of being unable to locate MW-1 and MW-3.
The site vicinity is shown on the USGS Topographic Map included as Figure 1, and a site map is included as
Figure 2. Site photographs are included in Appendix III.
Monitor Well Installation
On December 2, 2019, S&ME mobilized to the site to install monitor well MW-9. The monitor well was installed
using a track mounted Geoprobe® drill rig using 4 ¼ - inch solid stem augers to a depth of 23 ft-bgs. The well
was constructed with two-inch diameter Schedule 40 PVC riser with 15-foot length of 0.010-inch slotted, two-inch
diameter PVC screens. A filter pack comprised of #2 filter sand was extended to approximately two feet above the
top of the screen, over which an approximately two-foot layer of hydrated bentonite seal was put in place. The
wells were then completed using grout to the surface and encased in a flush-mount vault. The monitor well
boring log and well completion records are included in Appendix IV.
Corrective Action Performance Report
Becky’s Grocery, Incident No. 3430, MO-2777
20518 Ridgecrest Road, Locust, Stanly County, North Carolina
S&ME Project No. 4305-18-035B
S&ME, Inc. | 9751 Southern Pine Boulevard | Charlotte, NC 28273 | p 704.523.4726 | www.smeinc.com
Following the installation of monitor well MW-9, S&ME personnel measured the relative top of casing elevations
utilizing a laser level and rod. The depth to groundwater measurements and groundwater elevations are included
in the attached Table 1.
Following the installation of the monitor wells, S&ME collected groundwater samples from the monitor well
network on January 8, 2020. Documentation of this sampling event is documented in the Groundwater Monitoring
Report submitted under separate cover.
Please contact us at 919-872-2660 if you have any questions or comments regarding this report.
Sincerely,
S&ME, Inc.
Sarah Taylor Thomas P. Raymond, P.E.
Staff Geologist Senior Engineer
[e-mail] [e-mail]
Attachments:
Appendix I: Figure 1 – USGS Topographic Map
Figure 2 – Site Map
Figure 3 – Groundwater Quality Map
Appendix II: Table 1 – Well Construction and Liquid Level Data
Appendix III – Site Photographs
Appendix IV – Boring Logs and Well Completion Records

Appendices

Appendix I – Figures

^_
^_Project Location
SCALE:
DATE:
PROJECT NUMBER
FIGURE NO.
11 " = 2,000 '
1-29-20Drawing Path: Q:\4305\18\035B Beckys Grocery 2019 Dec\1_USGS MAP.mxd plotted by DHomans 01-29-20200 2,000 4,000(FEET)
USGS TOPOGRAPHIC MAP
³
REFERENCE: USGS USA TOPO STREAMING DATASETGIS BASE LAYERS WERE OBTAINED FROM USGS NATIONAL MAP. THIS MAP IS FORINFORMATIONAL PURPOSES ONLY. ALL FEATURE LOCATIONS DISPLAYED ARE APPROXIMATED.THEY ARE NOT BASED ON CIVIL SURVEY INFORMATION, UNLESS STATED OTHERWISE.
4305-18-035B
BECKY'S GROCERY TF-3430, UST#: MO-277720518 RIDGECREST ROADLOCUST, STANLY COUNTY, NORTH CAROLINA
!A$
!A$
!A$!A$
!A$
!A$
!A$
!A$
!A$¦FormerUST Basin
¦
FormerDispenserIsland
RIDGECREST RDRIDGECREST RDMW-1
MW-2
MW-4MW-5
MW-6
MW-7
MW-8
MW-3
MW-9
!A$Monitoring Well
Project Parcel
SCALE:
DATE:
PROJECT NUMBER
FIGURE NO.
21 " = 40 '
1-29-20Drawing Path: Q:\4305\18\035B Beckys Grocery 2019 Dec\2_sitemap.mxd plotted by DHomans 01-29-20200 40 80(FEET)
SITE MAP
³
REFERENCE: 2019 AERIAL PHOTOGRAPHGIS BASE LAYERS WERE OBTAINED FROM STANLY COUNTY AND NC ONEMAP. THIS MAP IS FORINFORMATIONAL PURPOSES ONLY. ALL FEATURE LOCATIONS DISPLAYED ARE APPROXIMATED.THEY ARE NOT BASED ON CIVIL SURVEY INFORMATION, UNLESS STATED OTHERWISE.
4305-18-035B
BECKY'S GROCERY TF-3430, UST#: MO-277720518 RIDGECREST ROADLOCUST, STANLY COUNTY, NORTH CAROLINA
!A$
!A$
!A$
!A$
!A$
!A$
!A$
!A$
!A$
MW-9Benzene= 390n-Butylbenzene= 1,800sec-Butylbenzene= 3301,2 Dichloroethane= 92Ethylbenzene= 2,500Isopropylbenzene = 490p-Isopropyltoluene= 230Naphthalene= 2,800n-Propylbenzene= 2,300Toluene= 4,3001,2,4-Trimethylbenzene= 20,0001,3,5-Trimethylbenzene= 6,6001,2-Dibromoethane= 60Total Xylenes= 18,400
MW-2(NS)
MW-4(NS)
MW-8(NS)
MW-7(NS)
MW-6(NS)
MW-5(NS)
MW-3(NS)
MW-1(NS)RIDGECREST RDRIDGECREST RDConcentrations exceeding the 2LStandards are shown in µg/L
Bold values exceed the GrossContamination Level (GCL)
SN Not Sampled
Ð!G Water Supply Wells
!A$Monitoring Well
Project Parcel
SCALE:
DATE:
PROJECT NUMBER
FIGURE NO.
31 " = 30 '
1-29-20Drawing Path: Q:\4305\18\035B Beckys Grocery 2019 Dec\3_gwquality.mxd plotted by DHomans 01-29-20200 30 60(FEET)
GROUNDWATER QUALITY MAPJanuary 8, 2020
³
REFERENCE: 2015 STANLY PHOTOGRAPHGIS BASE LAYERS WERE OBTAINED FROM STANLY COUNTY AND NC ONEMAP. THIS MAP IS FORINFORMATIONAL PURPOSES ONLY. ALL FEATURE LOCATIONS DISPLAYED ARE APPROXIMATED.THEY ARE NOT BASED ON CIVIL SURVEY INFORMATION, UNLESS STATED OTHERWISE.
4305-18-035B
BECKY'S GROCERY TF-3430, UST#: MO-277720518 RIDGECREST ROADLOCUST, STANLY COUNTY, NORTH CAROLINA

Appendix II – Tables
TABLE 5
WELL CONSTRUCTION AND LIQUID LEVEL DATA
Becky's Grocery (Incident No.: 3430, UST #: MO-2777)
20518 Ridgecrest Road, Locust, Stanly County, North Carolina
S&ME Project # 4305-18-035
Well
ID
Date
Installed
Well
Casing
Depth
(ft BGS)
Well
Casing
Diameter
(in)
Depth
of Well
(ft-BGS)
Top of
Casing
Elevation*
(ft)
Date
Water Level
Measured
Depth to
Product from
Top of
Casing (ft)
Depth to
Water from
Top of Casing
(ft)
Free
Product
Thickness
** (ft)
Groundwater
Elevation*
(ft)
09/19/12 NP 15.81 NA 83.6301/06/14 NP 11.41 NA 88.0303/20/18 NL NL NA NA09/19/12 NP 17.82 NA 83.5201/06/14 NP 17.81 NA 83.5303/20/18 NL NL NA NA09/19/12 NM NM NA NA01/06/14 NL NL NA NA09/19/12 NP 11.67 NA 90.9501/06/14 NP 11.93 NA 90.6903/05/15 NP 11.82 NA 90.8003/20/18 NP 8.94 NA 93.6806/12/19 NP 11.10 NA 91.5209/19/12 NP 14.24 NA 87.8101/06/14 NP 13.19 NA 88.8603/05/15 NP 11.93 NA 90.1203/20/18 NP 13.90 NA 88.1506/12/19 NP 8.97 NA 93.0809/19/12 NP 11.14 NA 90.9001/06/14 NP 8.29 NA 93.7503/05/15 NP 5.82 NA 96.2203/20/18 NP 6.83 NA 95.2106/12/19 NP 9.15 NA 92.8909/19/12 NP 13.81 NA 88.2301/06/14 NM NM NA NA03/05/15 NP 10.02 NA 92.0203/20/18 NL NL NA NA09/19/12 NP 13.09 NA 88.2601/07/14 NP 13.02 NA 88.3303/05/15 NP 12.38 NA 88.9703/20/18 NL NL NA NAMW-9 12/02/19 8.0 2.0 8.0 to 23.0 23.0 101.87 01/08/20 NP 13.62 NA 88.25
NOTES:* : Reference Point for Elevation Measurements:Benchmark Datum:Arbitrary Benchmark Benchmark Elevation: 100 ft
Assumed or Measured:Assumed** : If Free Product is present in a well, groundwater elevation should be calculated by: [Top of Casing Elevation - Depth to Water] + [free product thickness x 0.8581]
ft-BGS = feet below ground surface NM = Not Measured NA = Not ApplicableNL = Not Located NP = Not Present
102.04
MW-8 09/13/09 6.5 2.0 6.5 to 21.9 21.9 101.35
09/10/99 7.0 2.0 7.0 to
102.05
MW-6 09/09/99 6.0 2.0 6.0 to 26.0 26.0 102.04
MW-5 09/08/99 7.0 2.0 7.0 to
14.0 to 24.0 24.0 101.34
Screen
Interval
(ft-BGS)
19.0 to 24.0 24.0 99.44MW-1 11/06/90 19.0 2.0
MW-2 11/06/90 14.0 2.0
MW-3 11/07/90 13.0 2.0 13.0 to 23.0 23.0 105.68
to 25.0 25.0 102.62MW-4 09/09/99 10.0 2.0 10.0
26.0 26.0
22.0 22.0MW-7

Appendix III – Site Photographs

TF-3430 Becky’s Grocery
Locust, NC
Project #: 4305-18-035B
Sheet 1 of 3
Photo 1 Date: January 8, 2020Photographer:M. BrundageLocation 20518 Ridgecrest Road, Locust, NC
Remarks View of monitoring well MW-1 area
Photo 2 Date: January 8, 2020Photographer:M. BrundageLocation 20518 Ridgecrest Road, Locust, NC
Remarks View of monitoring well MW-4
TF-3430 Becky’s Grocery
Locust, NC
Project #: 4305-18-035B
Sheet 2 of 3
Photo 3 Date: January 8, 2020Photographer:M. BrundageLocation 20518 Ridgecrest Road, Locust, NC
Remarks View of monitoring well MW-5
Photo 4 Date: January 8, 2020Photographer:M. BrundageLocation 20518 Ridgecrest Road, Locust, NC
Remarks View of monitoring well MW-6
TF-3430 Becky’s Grocery
Locust, NC
Project #: 4305-18-035B
Sheet 3 of 3
Photo 5 Date: January 8, 2020Photographer:M. BrundageLocation 20518 Ridgecrest Road, Locust, NC
Remarks View of monitoring well MW-9

Appendix IV – Boring Logs and Well Completion Records

LOG OF SOIL BORING
WITH MONITOR WELL CONSTRUCTION NOTES
PROJECT NAME:
DATE DRILLED:
DRILLING METHOD:
DEPTH TO WATER:TOC ELEVATION:
LOGGED BY:
DRILLER:
LATITUDE:LONGITUDE:
ELEVATION
(ft.)
DEPTH (ft.)
LITHOLOGY Description WellConstruction WellDescription
NOTES:
0
-5
-10
-15
-20
0
-5
-10
-15
-20
MW-9
TF-3430 Becky's Grocery
12/2/2019
GeoProbe
13.62
N/M
K. Murphy
EDPS
N/A
N/A
Asphalt
Clayey SAND: Light Brown; strong odor, damp
Clayey SAND: Grey and Orangish Brown; strong odor, damp
Clayey SAND: Yellowish Brown and Tan; strong odor, damp
Sandy CLAY: Yellowish Tan; strong odor, damp
SAND: Light Brown and Tan; medium to fine grained sand, strong odor, damp
SAND: Light Brown; fine grained sand, strong odor
Rock: White dust; in rock, water around 23'
Portland Grout
Sch. 40 PVC Casing
Bentonite
Static Water Level
#2 Filter Sand
Sch. 40 0.010" Sl. PVC
Screen