RA-804_5583_CA_RPTS_20110719_LtdSoilSamplingLtr

July 19, 2011

North Carolina Department of Environment and Natural Resources
Division of Waste Management
Underground Storage Tank Section
1637 Mail Service Center
Raleigh, North Carolina 27699

Attention: Ms. Linda Blalock

Reference: Limited Soil Sampling Letter Report
TF-5583 Jim’s Solarguards
700 East Geer Street
Durham, Durham County, North Carolina
S&ME Project No. 1354-11-037A

Dear Ms. Blalock:

S&ME, Inc. (S&ME) is submitting this Limited Soil Sampling Letter Report for the
above-referenced site. The scope of services performed for this report were performed in
general accordance with S&ME’s Proposal No. P036A-11V, dated May 17, 2011, and as
authorized by the North Carolina Department of Environment and Natural Resources
(NCDENR’s) Task Authorization No. 02, dated May 19, 2011 and within NCDENR’s
Contract No. 16-1713-3C for the Eastern Region.

S&ME’s approved Scope of Services for this Task Authorization included advancing five
soil borings to depths of five feet below ground surface (ft. bgs), collecting soil samples
and, preparing this Limited Soil Sampling Letter Report.
Soil Sampling

On June 1, 2011, S&ME utilized direct push technology, commonly referred to as
Geoprobe® to advance five borings to collect five soil samples in the vicinity of the
former USTs. The site and vicinity are shown on Figure 1 and a map showing the
locations of the soil samples is shown on Figure 2. Photographs of the site activities are
included in Appendix I. Each of the soil borings were advanced to depths of
approximately five feet below the ground surface. One soil sample was collected from
each boring just above the water table (noted at five ft. bgs as measured in monitor well
MW-1). In general, soils encountered in the soil borings consisted of silty sands and
clays. Subsurface lithology for the soil borings are provided in the boring logs in
Appendix II.

The soil samples were placed in laboratory-supplied containers, stored in a cooler with
ice, and shipped under chain-of-custody procedures to Prism Laboratories, Inc. (Prism) of
Charlotte, North Carolina to be analyzed for volatile organic compounds (VOCs) by EPA
Limited Soil Sampling Letter Report S&ME Project No. 1354-11-037A
TF-5583 Jim’s Solarguards, Durham, Durham County, NC July 19, 2011
2
Method 8260B and volatile petroleum hydrocarbons (VPH) by the Massachusetts
Department of Environmental Protection (MADEP) Method.
Soil Sampling Results
The laboratory analytical results of the soil samples collected on June 1, 2011 indicated
that naphthalene (2.6 milligrams per kilogram (mg/Kg)), C9-C18 aliphatics (650 mg/Kg),
and C9-C22 aromatics (160 mg/Kg) were detected in concentrations exceeding their
respective Soil to Water Maximum Soil Contaminant Concentrations (MSCCs) in soil
sample SB-3. Several other VOCs and one other carbon fractions were detected in
concentrations exceeding their respective reporting limits, but below their respective
MSCCs in soil sample SB-3. No other VOCs or carbon fractions were detected above
their respective MSCCs in the other soil samples submitted for analysis. The laboratory
analytical results of the soil samples are shown on Table 1, and soil boring locations and
the constituents detected in the soil samples are shown on Figure 2. A copy of the
laboratory analytical report and chain of custody form are included in Appendix III.

Conclusions and Recommendations

 Previous environmental reports indicate that some contaminated soils remain in
the former UST pit which is now covered with an awning and wooden deck, and
in the area to the east of the former UST pit.

 Based on S&ME’s April 6, 2011 Groundwater Monitoring Report, the laboratory
analytical results of the groundwater sample collected from MW-1 on March 8,
2011 indicated that no constituents were detected at concentrations exceeding the
laboratory reporting limits. In addition, there are no water supply wells located
within 1,500 feet of the site.

 Based on the results of the June 1, 2011 limited soil sampling event, one VOC
(naphthalene) and two carbon fractions (C9-C18 aliphatics and C9-C22
aromatics) were detected in concentrations exceeding their respective MSCCs in
soil sample SB-3. Target contaminant constituents in other soil borings advanced
by S&ME on June 1, 2011 were below the MSCCs.

S&ME recommends conducting no further assessment activities at the site and closing
the site with a Notice of Residual Petroleum for soil.

Date Depth (ft-bgs)
SB-1 (3.5-4.5')6/1/2011 3.5-4.5 <0.039 <0.0039 <0.0039 <0.0039 <0.078 <0.0039 <0.0078 <0.0039 <0.0039 <0.0039 <0.0039 <0.0039 <0.0039 <0.0039 <0.012 <4.3 1.8 J <4.3
SB-2 (3.5-4.5')6/1/2011 3.5-4.5 <0.037 <0.0037 <0.0037 <0.0037 <0.075 <0.0037 <0.0075 <0.0037 <0.0037 <0.0037 <0.0037 <0.0037 <0.0037 <0.0037 <0.011 <4.1 <4.1 <4.1
SB-3 (3.5-4.5')6/1/2011 3.5-4.5 0.041 0.043 0.077 0.11 0.011 J <0.0040 2.6 E 0.67 E 0.51 E 0.16 0.0068 0.0037 J 0.11 1.0 E 0.028 <41 650 160
SB-4 (3.5-4.5')6/1/2011 3.5-4.5 0.021 J <0.0037 <0.0037 <0.0037 0.029 J 0.0019 J <0.0074 <0.0037 <0.0037 <0.0037 <0.0037 <0.0037 <0.0037 <0.0037 <0.011 <4.3 1.8 J <4.3
SB-5 (3.5-4.5')6/1/2011 3.5-4.5 0.026 J <0.0024 <0.0038 <0.0038 <0.075 <0.0038 <0.0075 <0.0038 <0.0038 <0.0038 <0.0038 <0.0038 <0.0038 <0.0038 <0.011 <4.0 <4.0 <4.0
24.0 4.9 NE 1.7 1.9 0.02 0.16 3.3 1.7 3.3 3.4 4.3 8.3 8.5 8.5 68 540 31
14,000 1,560 NE 1,564 6,200 85 313 626 626 626 626 1,200 782 782 782 939 1,500 469
360,000 40,000 NE 40,880 160,000 763 8,176 16,350 16,350 16,350 16,350 32,000 20,440 20,440 20,040 24,528 40,000 12,264
Notes:
1. Analytes from the method suite that are not shown were not detected.
2. All concentrations are reported in milligrams per kilogram (mg/Kg).
3. VOCs: Volatile Organic Compounds
4. SVOCs: Semi-Volatile Organic Compounds
5. MADEP: Masachussetts Department of Environment and Protection
6. VPH: Volatile Petroleum Hydrocarbons
7. EPH: Extractable Petroleum Hydrocarbons
8. Ft-bgs: Feet below ground surface
9. D: Sample analyzed at dilution.
8. NE: Regulatory standard not established for contaminant.
10. MSCC: Maximum Soil Contaminant Concentration
11. All samples that exceed the soil to groundwater MSCCs are shown in Shaded and BOLD fields.
12. Concentrations exceeding the laboratory's reporting limits are shown in BOLD fields.
13. J = Result is an estimated concentration. - compound was detected but below the Reporting Limit.
14. E = Estimated concentration above the calibration range.
Durham, Durham County, North Carolina
NCDENR Incident No. 5583
S&ME Project No. 1354-11-037A
Volatile Organic Compounds (VOCs) by EPA Method 8260B (mg/Kg)Total XylenesToluenen-propylbenzeneSec-butylbenzeneTert-butylbenzenen-butylbenzeneTable 1
Summary of Soil Analytical Results
Jim's Solarguards
700 East Geer Street
C9-C22 AromaticsMADEP VPH (mg/Kg) C9-C18 AliphaticsMethyl Ethyl Ketone (2-butanone)NaphthaleneIsopropylbenzeneAcetone4-IsopropyltolueneEthylbenzene C5-C8 Aliphatics1,3,5-Trimethylbenzene1,2,4-TrimethylbenzeneIndustrial/Commercial MSCCs
Residential MSCCs
Sample ID
Soil to Water MSCCs
Contaminant of Concern
Methylene Chloride

TF-5583 Jim’s Solarguards
700 East Geer Street
Durham, Durham County, North Carolina
S&ME Project No. 1354-11-037A
Taken by: GP Date Taken: 6/1/11
1

1 Front of Jim’s Solarguards
Site (Facing Southeast).
2 West side of site with monitor well MW-1 and Soil
Boring SB-1 location (Facing North).

3 F
r
o
n
t
Front of Jim’s Solarguards Site with gas line and Soil
Boring SB-4 location (Facing South).
4 Front of Jim’s Solarguards Site with gas line and
Soil Boring SB-5 location (Facing West).
MW-1
MW-1
SB-1
MW-1
Gas Line
SB-4

SB-5

TF-5583 Jim’s Solarguards
700 East Geer Street
Durham, Durham County, North Carolina
S&ME Project No. 1354-11-037A
Taken by: GP Date Taken: 6/1/11
2

5 Approximately half foot to one foot of concrete
beneath the asphalt at all boring locations.
6 Patched the borehole from
SB-5 (Facing South).

7 Patched the boreholes from SB-2, SB-3
and SB-4 (Facing West).
8 Patched the borehole from
SB-1 (Facing South).
SB-5

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