AS-3505_28649_CA_RPTS_20151106_OM

7606 Whitehall Executive Center Drive, Suite 800
Charlotte, NC 28273
Tel: [phone]
Fax: [phone]
www.atcassociates.com
N.C. Engineering License No. C-1598

1

November 6, 2015

Mr. Dan Murphy
North Carolina Department of Environmental Quality
Asheville Regional Office
Division of Waste Management - UST Section
2090 US Highway 70
Swannanoa, North Carolina 28778

Re: AS/SVE O&M Summary
Cajah’s Mountain Superette
1990 Connelly Springs Road
Lenoir, Caldwell County, North Carolina 28645
Facility ID No. 0-004593
NCDEQ Incident No. 28649
Risk Classification: High (H190D)
ATC Project No. CARCAJA

Dear Mr. Murphy:

ATC Associates of North Carolina, P.C. (ATC), on behalf of Cary Oil Company (Cary Oil), is submitting the
enclosed summary of Air Sparge/Soil Vapor Extraction (AS/SVE) system operation and maintenance
(O&M) activities conducted from August through September 2015.

If you have any questions or comments, please contact us at [phone].

Sincerely,

ATC Associates of North Carolina, P.C.

Christine E. Schaefer
Project Manager

cc: Mr. Glenn Petti – Cary Oil Company

7606 Whitehall Executive Center Drive, Suite 800
Charlotte, NC 28273
Tel: [phone]
Fax: [phone]
www.atcassociates.com
N.C. Engineering License No. C-1598

1

November 6, 2015

Mr. Dan Murphy
North Carolina Department of Environmental Quality
Asheville Regional Office
Division of Waste Management - UST Section
2090 US Highway 70
Swannanoa, North Carolina 28778

Re: AS/SVE O&M Summary
Cajah’s Mountain Superette
1990 Connelly Springs Road
Lenoir, Caldwell County, North Carolina 28645
Facility ID No. 0-004593
NCDEQ Incident No. 28649
Risk Classification: High (H190D)
ATC Project No. CARCAJA

Dear Mr. Murphy:

ATC Associates of North Carolina, P.C. (ATC), on behalf of Cary Oil Company (Cary Oil), is submitting a
summary of Air Sparge/Soil Vapor Extraction (AS/SVE) system operation and maintenance (O&M)
activities conducted from August through October 2015.

Scheduled O&M site visits were conducted by ATC personnel on August 12, August 24, September 16,
October 14, and October 29, 2015. Electrical issues experienced at the site and vicinity led to system
downtime during the reporting period. Site visits were focused on assessment and repair of the systems. High
voltage fuses on the on-site and off-site SVE blowers were replaced in October 2015 and the systems were
re-started. On-site system run-time was 10.5% from August 12, 2015, to October 29, 2015. Vacuum readings
for each well point at the on-site SVE manifold were set at approximately 47 inches of water. Following a
reduction in measurable product at the site, sparge wells AS-1 through AS-3 were started when the on-site
system was re-started in October 2015. Pressure readings for each well point at the on-site AS manifold were
set at approximately 12 psi. Off-site system run-time was 1.4% from August 12, 2015, to October 29, 2015
(the off-site system was re-started approximately one week after the on-site system, and the off-site system is
programmed to shut down during nighttime hours). Vacuum readings for each well point at the off-site SVE
manifold were set at approximately 60 inches of water. Pressure readings for each well point at the off-site
AS manifold were set at approximately 11 psi.

Effluent air samples were collected from the on-site and off-site SVE systems on October 29, 2015, to
evaluate petroleum vapor removal and to assist with system optimization efforts. The system air samples
were submitted to North Carolina-accredited Accutest Laboratories in Orlando, Florida for analysis by EPA
Method TO-18. The laboratory analytical report is provided in Appendix A. Table 1 shows SVE cumulative
recovery calculations based on system effluent sampling data. Assuming consistent recovery during each day

TABLE
Date
Cross-Sectional
Area of Pipe
Conversion
Factor3
Days of
Operation
Cumulative
Recovery
(ft2) (lb-m3/mg-ft3)(lb/hr) (lb/day) (days) (lbs)
04/04/14* 0.08700 1,116 97.09 413 0.00000006243 0.1502 3.60 9.00 32.44
07/10/14 0.08700 1,116 97.09 6.04 0.00000006243 0.0022 0.05 97.00 37.56
10/27/14 0.08700 714 62.12 281.0 0.00000006243 0.0654 1.57 109.00 208.6
03/04/15 0.08700 719 62.55 313.0 0.00000006243 0.0733 1.760 128.00 433.9
06/18/15* 0.08700 763 66.38 26.30 0.00000006243 0.0065 0.1569 106.00 450.5
10/29/15 0.08700 603 52.46 275.0 0.00000006243 0.05404 1.2970 32.00 492.0
04/04/14* 0.08700 626 54.46 0.64 0.00000006243 0.0001 0.003 9.00 0.02820
07/10/14
10/27/14 0.08700 575 50.03 0.45 0.00000006243 0.0001 0.002 87.00 0.2043
03/04/15 0.08700 523 45.50 0.00 0.00000006243 0.0000 0.000 128.00 0.2043
06/18/15* 0.08700 731 63.60 0.00 0.00000006243 0.0000 0.000 106.00 0.2043
10/29/15 0.08700 528 45.94 0.00 0.00000006243 0.0000 0.000 55.00 0.2043
Notes:
* Effluent velocity inferred; reading not collected
Facility ID Number 0-004593
Incident Number 28649
No Sample Collected; System Down
1. Air flow rate = (cross-sectional area) x (effluent velocity)
2. Total BTEX concentrations in effluent air are based on EPA Method 18 laboratory data
Effluent
Velocity
(ft/min)
Table 1
SVE System Cumulative Recovery
Cajah's Mountain Superette
1990 Connelly Springs Road
Lenoir, North Carolina
Air Flow
Rate1
(ft3/min)
Total
BTEX2
(mg/m3)
Mass Removal Rate4
On-Site System
4. Mass removal rate = (air flow rate) x (total BTEX) x (conversion factor) x (60 min/hr or 1,440 min/day)
Off-Site System
3. Conversion factor to convert units of concentration from mg/m3 to lb/ft3

FIGURE
SITE
HAMBY/CAJAH'SMT PARK
TRIPLETT
HAMBY/CAJAH' MT PARK
WILLIAMS/BRANDON APARTMENTS
PRICE
CHURCH
SHELL
CHURCH
PR
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J
E
C
T

N
O
.
NO
T
E
S
:
DA
T
E
TI
T
L
E
SC
A
L
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RE
V
.

B
Y
PR
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P
.

B
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CA
D

F
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E

APPENDIX A
11/03/15
Technical Report for
Cardno ATC Associates, Inc
Cajah's Mountain; 1900 Connelly Springs Rd, Lenoir, NC
89.03451.1018
Accutest Job Number: FA28864
Sampling Date: 10/29/15
Report to:
Cardno ATC Associates
4020 Old Pineville Rd
Charlotte, NC 28217
[e-mail]; [e-mail]
ATTN: Christine Dupuis
Total number of pages in report:
Certifications: FL (E83510), LA (03051), KS (E-10327), IA (366), IL (200063), NC (573), NJ (FL002), SC (96038001)
DoD ELAP (L-A-B L2229), CA (2937), TX (T104704404), PA (68-03573), VA (460177),
AK, AR, GA, KY, MA, NV, OK, UT, WA
This report shall not be reproduced, except in its entirety, without the written approval of Accutest Laboratories.
Test results relate only to samples analyzed.
Southeast  4405 Vineland Road  Suite C-15  Orlando, FL 32811  tel: [phone]  fax: [phone]  http://www.accutest.com
Test results contained within this data package meet the requirements
of the National Environmental Laboratory Accreditation Program
and/or state specific certification programs as applicable.
Client Service contact: Muna Mohammed 407-425-6700
Norm Farmer
Technical Director
Southeast
11/03/15
e-Hardcopy 2.0
Automated Report
15
Accutest Laboratories is the sole authority for authorizing edits or modifications to this
document. Unauthorized modification of this report is strictly prohibited.
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FA28864
Table of Contents
-1-
Sections:
Section 1: Sample Summary ...................................................................................................3
Section 2: Summary of Hits ....................................................................................................4
Section 3: Sample Results ........................................................................................................5
3.1: FA28864-1: ON SITE ...................................................................................................6
3.2: FA28864-2: OFF SITE .................................................................................................7
Section 4: Misc. Forms ............................................................................................................8
4.1: Chain of Custody ...........................................................................................................9
Section 5: GC Volatiles - QC Data Summaries .....................................................................12
5.1: Method Blank Summary ................................................................................................13
5.2: Blank Spike Summary ...................................................................................................14
5.3: Duplicate Summary .......................................................................................................15
1
2
3
4
5
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FA28864
Accutest Laboratories
Sample Summary
Cardno ATC Associates, Inc
Job No:FA28864
Cajah's Mountain; 1900 Connelly Springs Rd, Lenoir, NC
Project No: 89.03451.1018
Sample Collected Matrix Client
Number Date Time By Received Code Type Sample ID
FA28864-1 10/29/15 13:00 JV 10/30/15 AIR Air ON SITE
FA28864-2 10/29/15 14:00 JV 10/30/15 AIR Air OFF SITE
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Summary of Hits Page 1 of 1
Job Number:FA28864
Account:Cardno ATC Associates, Inc
Project:Cajah's Mountain; 1900 Connelly Springs Rd, Lenoir, NC
Collected:10/29/15
Lab Sample ID Client Sample ID Result/
Analyte Qual RL MDL Units Method
FA28864-1 ON SITE
Benzene 5.4 0.50 0.10 ppmv EPA TO-3
Toluene 34.1 0.50 0.10 ppmv EPA TO-3
Ethylbenzene 5.5 0.50 0.10 ppmv EPA TO-3
Xylenes (total)24.2 1.5 0.30 ppmv EPA TO-3
TPH as Equiv Pentane 531 5.0 1.0 ppmv EPA TO-3
Benzene 17 1.6 0.32 mg/m3 EPA TO-3
Toluene 129 1.9 0.38 mg/m3 EPA TO-3
Ethylbenzene 24 2.2 0.43 mg/m3 EPA TO-3
Xylenes (total)105 6.5 1.3 mg/m3 EPA TO-3
TPH as Equiv Pentane 1560 15 2.9 mg/m3 EPA TO-3
FA28864-2 OFF SITE
No hits reported in this sample.
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Accutest Laboratories
Sample Results
Report of Analysis
Southeast
Section 3
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Accutest Laboratories
Report of Analysis Page 1 of 1
Client Sample ID:ON SITE
Lab Sample ID:FA28864-1 Date Sampled:10/29/15
Matrix:AIR - Air Date Received:10/30/15
Method:EPA TO-3 Percent Solids:n/a
Project:Cajah's Mountain; 1900 Connelly Springs Rd, Lenoir, NC
File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
Run #1 HH052422.D 1 10/30/15 SH n/a n/a GHH2900
Run #2
Initial Volume
Run #1 0.50 ml
Run #2
Purgeable Aromatics
CAS No.MW Compound Result RL MDL Units Q Result RL MDL Units
71-43-2 78.11 Benzene 5.4 0.50 0.10 ppmv 17 1.6 0.32 mg/m3
108-88-3 92.14 Toluene 34.1 0.50 0.10 ppmv 129 1.9 0.38 mg/m3
100-41-4 106.2 Ethylbenzene 5.5 0.50 0.10 ppmv 24 2.2 0.43 mg/m3
1330-20-7 106.2 Xylenes (total)24.2 1.5 0.30 ppmv 105 6.5 1.3 mg/m3
1634-04-4 88.15 Methyl Tert Butyl Ether ND 0.50 0.15 ppmv ND 1.8 0.54 mg/m3
72 TPH as Equiv Pentane 531 5.0 1.0 ppmv 1560 15 2.9 mg/m3
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
460-00-4 4-Bromofluorobenzene 115%54-142%
460-00-4 4-Bromofluorobenzene 110%54-142%
ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value
RL = Reporting Limit B = Indicates analyte found in associated method blank
E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound
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FA28864
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3.
1
Accutest Laboratories
Report of Analysis Page 1 of 1
Client Sample ID:OFF SITE
Lab Sample ID:FA28864-2 Date Sampled:10/29/15
Matrix:AIR - Air Date Received:10/30/15
Method:EPA TO-3 Percent Solids:n/a
Project:Cajah's Mountain; 1900 Connelly Springs Rd, Lenoir, NC
File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
Run #1 HH052423.D 1 10/30/15 SH n/a n/a GHH2900
Run #2
Initial Volume
Run #1 0.50 ml
Run #2
Purgeable Aromatics
CAS No.MW Compound Result RL MDL Units Q Result RL MDL Units
71-43-2 78.11 Benzene ND 0.50 0.10 ppmv ND 1.6 0.32 mg/m3
108-88-3 92.14 Toluene ND 0.50 0.10 ppmv ND 1.9 0.38 mg/m3
100-41-4 106.2 Ethylbenzene ND 0.50 0.10 ppmv ND 2.2 0.43 mg/m3
1330-20-7 106.2 Xylenes (total)ND 1.5 0.30 ppmv ND 6.5 1.3 mg/m3
1634-04-4 88.15 Methyl Tert Butyl Ether ND 0.50 0.15 ppmv ND 1.8 0.54 mg/m3
72 TPH as Equiv Pentane ND 5.0 1.0 ppmv ND 15 2.9 mg/m3
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
460-00-4 4-Bromofluorobenzene 109%54-142%
460-00-4 4-Bromofluorobenzene 104%54-142%
ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value
RL = Reporting Limit B = Indicates analyte found in associated method blank
E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound
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3.
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Accutest Laboratories
Misc. Forms
Custody Documents and Other Forms
Includes the following where applicable:
 Chain of Custody
Southeast
Section 4
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FA28864: Chain of Custody
Page 1 of 3
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4.
1
FA28864: Chain of Custody
Page 2 of 3
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4
4.
1
FA28864: Chain of Custody
Page 3 of 3
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4.
1
Accutest Laboratories
GC Volatiles
QC Data Summaries
Includes the following where applicable:
 Method Blank Summaries
 Blank Spike Summaries
 Matrix Spike and Duplicate Summaries
Southeast
Section 5
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5
Method Blank Summary Page 1 of 1
Job Number:FA28864
Account:ATCNCC Cardno ATC Associates, Inc
Project:Cajah's Mountain; 1900 Connelly Springs Rd, Lenoir, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
GHH2900-MB HH052421.D 1 10/30/15 SH n/a n/a GHH2900
The QC reported here applies to the following samples:Method: EPA TO-3
FA28864-1, FA28864-2
CAS No.Compound Result RL MDL Units Q Result RL Units
1634-04-4 Methyl Tert Butyl Ether ND 0.50 0.15 ppmv ND 1.8 mg/m3
71-43-2 Benzene ND 0.50 0.10 ppmv ND 1.6 mg/m3
108-88-3 Toluene ND 0.50 0.10 ppmv ND 1.9 mg/m3
100-41-4 Ethylbenzene ND 0.50 0.10 ppmv ND 2.2 mg/m3
1330-20-7 Xylenes (total)ND 1.5 0.30 ppmv ND 6.5 mg/m3
TPH as Equiv Pentane ND 5.0 1.0 ppmv ND 15 mg/m3
CAS No.Surrogate Recoveries Limits
460-00-4 4-Bromofluorobenzene 111%54-142%
460-00-4 4-Bromofluorobenzene 105%54-142%
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5.
1
.
1
Blank Spike Summary Page 1 of 1
Job Number:FA28864
Account:ATCNCC Cardno ATC Associates, Inc
Project:Cajah's Mountain; 1900 Connelly Springs Rd, Lenoir, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
GHH2900-BS HH052420.D 1 10/30/15 SH n/a n/a GHH2900
The QC reported here applies to the following samples:Method: EPA TO-3
FA28864-1, FA28864-2
Spike BSP BSP
CAS No.Compound ppmv ppmv %Limits
1634-04-4 Methyl Tert Butyl Ether 10 7.9 79 60-111
71-43-2 Benzene 10 9.5 95 64-111
108-88-3 Toluene 10 9.7 97 60-112
100-41-4 Ethylbenzene 10 8.5 85 59-112
1330-20-7 Xylenes (total)30 26.9 90 58-110
TPH as Equiv Pentane 135 121 90 66-116
CAS No.Surrogate Recoveries BSP Limits
460-00-4 4-Bromofluorobenzene 90%54-142%
460-00-4 4-Bromofluorobenzene 95%54-142%
* = Outside of Control Limits.
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.
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Duplicate Summary Page 1 of 1
Job Number:FA28864
Account:ATCNCC Cardno ATC Associates, Inc
Project:Cajah's Mountain; 1900 Connelly Springs Rd, Lenoir, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
FA28864-2DUP HH052424.D 1 10/30/15 SH n/a n/a GHH2900
FA28864-2 HH052423.D 1 10/30/15 SH n/a n/a GHH2900
The QC reported here applies to the following samples:Method: EPA TO-3
FA28864-1, FA28864-2
FA28864-2 DUP
CAS No.Compound ppmv Q ppmv Q RPD Limits
1634-04-4 Methyl Tert Butyl Ether ND ND nc 10
71-43-2 Benzene ND ND nc 11
108-88-3 Toluene ND ND nc 14
100-41-4 Ethylbenzene ND ND nc 13
1330-20-7 Xylenes (total)ND ND nc 15
TPH as Equiv Pentane ND ND nc 28
CAS No.Surrogate Recoveries DUP FA28864-2 Limits
460-00-4 4-Bromofluorobenzene 108%109%54-142%
460-00-4 4-Bromofluorobenzene 104%104%54-142%
* = Outside of Control Limits.
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