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Home My WebLink AboutAS-3303_28466_CA_RMR_20140305_OMS 7606 Whitehall Executive Center Drive, Suite 800 Charlotte, NC 28273 Tel: 704-529-3200 Fax: 704-529-3272 www.atcassociates.com N.C. Engineering License No. C-1598 1 March 5, 2014 Mr. Dan Murphy North Carolina Department of Environment and Natural Resources Asheville Regional Office Division of Waste Management - UST Section 2090 US Highway 70 Swannanoa, North Carolina 28778 Re: AS/SVE O&M Summary Former Tilley’s Superette 1710 Union Grove Road Lenoir, North Carolina 28645 Facility ID No. 0-007680 NCDENR Incident No. 28466 Site Risk: H155D ATC Project No. 89.03451.1033 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 November 2013 through January 2014. If you have any questions or comments, please contact us at (704) 529-3200. 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: 704-529-3200 Fax: 704-529-3272 www.atcassociates.com N.C. Engineering License No. C-1598 1 March 5, 2014 Mr. Dan Murphy North Carolina Department of Environment and Natural Resources Asheville Regional Office Division of Waste Management - UST Section 2090 US Highway 70 Swannanoa, North Carolina 28778 Re: AS/SVE O&M Summary Former Tilley’s Superette 1710 Union Grove Road Lenoir, North Carolina 28645 Facility ID No. 0-007680 NCDENR Incident No. 28466 Site Risk: H155D ATC Project No. 89.03451.1033 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 November 2013 through January 2014. O&M site visits were conducted by ATC personnel on November 14, November 27, December 10 and December 30, 2013, and January 16 and January 28, 2014. System run-time was 100% from November 2013 through January 2014. Soil vapor extraction wells SVE-6 through SVE-8 were turned off on April 8, 2013, to increase system vacuum in areas of highest groundwater impact. During site visits in October and November 2013, air sparge wells AS-4, AS-5, AS-7, AS-8, AS-9, and AS-10 were turned off and pressures at the remaining operational sparge wells were adjusted to focus remedial efforts in areas of remaining contaminant impact. Vacuum readings for each well point at the SVE manifold were set at approximately 56 inches of water. Pressure readings for each well point at the AS manifold were set at approximately 16 psi. An SVE effluent air sample was collected on December 30, 2013. The air sample was submitted to Accutest Laboratories for analysis by EPA Method 18. The laboratory analytical report is provided in Appendix A. Table 2 shows SVE cumulative recovery calculations based on system effluent sampling data. Assuming consistent recovery during each day of operation between sampling dates, approximately 3,036 lbs of total BTEX have been recovered since system startup. Measurements of depth to water and dissolved oxygen were recorded from 20 site monitoring wells on a monthly basis during the first quarter of system operation and are now recorded on a semi-annual basis during groundwater monitoring events, to determine the effectiveness of the air sparge system. Readings are Former Tilley’s Superette – O&M Summary March 5, 2014 NCDENR Incident No. 28466 ATC Project No. 89.03451.1033 3 TABLES Table 1 Depth to Water and Dissolved Oxygen Readings Former Tilley's Superette 1710 Union Grove Road Lenoir, North Carolina Facility ID Number 0-007680 Incident Number 28466 DTW DO DTW DO DTW DO DTW DO DTW DO DTW DO (ft below TOC)(mg/L)(ft below TOC)(mg/L)(ft below TOC)(mg/L)(ft below TOC)(mg/L)(ft below TOC)(mg/L)(ft below TOC)(mg/L) MW-1 40.90 8.11 40.20 7.69 40.08 8.68 40.22 6.29 42.26 3.22 35.12 7.92 MW-2 41.05 NR 40.38 1.46 40.14 2.82 40.21 1.49 41.98 2.26 35.23 3.53 MW-3 40.51 NR 39.88 4.12 39.59 5.46 39.52 2.53 41.91 2.07 34.91 8.29 MW-4 34.51 7.42 33.69 7.99 33.60 10.48 33.90 8.51 35.75 8.06 28.06 7.03 MW-5D 41.38 8.58 40.64 1.33 40.50 1.68 40.76 2.46 42.58 2.08 35.23 2.47 MW-6 37.33 7.21 36.39 8.37 36.33 9.74 36.58 7.17 38.66 7.71 30.78 8.43 MW-7 31.83 9.24 31.23 8.66 30.23 11.11 31.55 8.99 33.43 9.42 25.26 8.28 MW-8 35.05 9.52 34.58 8.31 34.76 10.20 35.16 7.78 36.52 9.02 29.08 8.32 MW-9 39.23 2.81 38.78 5.05 38.75 7.83 39.06 2.35 40.61 2.67 33.27 8.26 MW-10 41.53 5.83 41.13 6.60 40.80 7.58 40.84 6.60 42.53 6.93 36.18 8.22 MW-11 40.80 9.14 40.11 4.11 39.82 4.22 39.81 2.89 41.85 2.06 35.32 6.96 MW-12 39.23 5.62 39.02 8.12 39.05 6.88 39.38 4.38 40.91 2.28 33.88 8.25 MW-13 27.74 9.46 27.43 8.05 27.59 9.53 28.03 8.10 29.27 8.98 22.13 8.64 MW-14 29.59 6.57 28.96 7.10 29.15 9.24 29.64 7.77 30.98 8.24 23.57 8.78 MW-15 31.16 9.28 30.86 10.02 30.90 11.15 31.37 8.88 32.62 10.40 25.24 8.76 MW-16D 39.74 5.99 39.40 1.70 41.00 2.90 39.86 1.64 41.20 1.65 34.06 5.98 MW-17 40.66 8.52 40.38 5.48 40.37 7.38 40.63 4.98 42.08 Dry 35.86 8.85 MW-18 37.21 7.49 36.92 6.26 37.02 6.95 37.38 5.24 38.75 6.47 31.77 7.68 MW-19 25.54 8.99 25.23 6.59 25.41 9.43 25.81 5.23 27.04 Dry 19.93 8.83 MW-20 16.11 5.67 15.89 5.62 16.04 8.96 16.42 5.40 17.54 8.01 10.53 8.90 TOC = top of casing NR = not recorded (sheen observed) 8/14/2013 Well ID 5/7/2012 6/6/2012 7/9/2012 8/8/2012 2/13/2013 Date Cross-Sectional Area of Pipe Conversion Factor3 Days of Operation Cumulative Recovery (ft2) (lb-m3/mg-ft3)(lb/hr) (lb/day) (days) (lbs) 06/20/12 0.08700 2,982 259.4 835.9 0.00000006243 0.8123 19.50 57.00 1,111 09/19/12 0.08700 3,433 298.7 367.0 0.00000006243 0.4106 9.85 91.00 2,008 12/19/12 * 0.08700 3,433 298.7 305.0 0.00000006243 0.3412 8.189 91.00 2,753 03/20/13 0.08700 2,260 196.6 90.50 0.00000006243 0.06665 1.600 91.00 2,899 06/26/13 0.08700 828.0 72.04 101.9 0.00000006243 0.02750 0.6599 98.00 2,963 09/28/13 * 0.08700 828.0 72.04 25.10 0.00000006243 0.00677 0.1625 94.00 2,979 12/30/13 * 0.08700 564.0 49.07 140.10 0.00000006243 0.02575 0.6180 93.00 3,036 Notes: * Effluent velocity inferred; reading not collected due to water in line 2. Total BTEX concentrations in effluent air are based on EPA Method 18 laboratory data 3. Conversion factor to convert units of concentration from mg/m3 to lb/ft3 4. Mass removal rate = (air flow rate) x (total BTEX) x (conversion factor) x (60 min/hr or 1,440 min/day) Incident Number 28466 Effluent Velocity (ft/min) Air Flow Rate1 (ft3/min) Total BTEX2 (mg/m3) Mass Removal Rate4 1. Air flow rate = (cross-sectional area) x (effluent velocity) Table 2 SVE System Cumulative Recovery Former Tilley's Superette 1710 Union Grove Road Lenoir, North Carolina Facility ID Number 0-007680 Former Tilley’s Superette – O&M Summary March 5, 2014 NCDENR Incident No. 28466 ATC Project No. 89.03451.1033 4 FIGURES Former Tilley’s Superette – O&M Summary March 5, 2014 NCDENR Incident No. 28466 ATC Project No. 89.03451.1033 5 APPENDIX A 01/06/14 Technical Report for Cardno ATC Associates, Inc Tilleys; 1710 Union Grove Rd, Lenior, NC 089.03451.1037 Accutest Job Number: FA11242 Sampling Date: 12/30/13 Report to: Cardno ATC Associates 4020 Old Pineville Rd Charlotte, NC 28217 mike.shaw@atcassociates.com; christine.dupuis@atcassociates.com ATTN: Mike Shaw 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 (04226CA), 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: 407-425-6700 fax: 407-425-0707 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 Harry Behzadi, Ph.D. Laboratory Director Southeast 01/06/14 e-Hardcopy 2.0 Automated Report 13 Accutest Laboratories is the sole authority for authorizing edits or modifications to this document. Unauthorized modification of this report is strictly prohibited. 1 of 13 FA11242 Table of Contents -1- Sections: Section 1: Sample Summary ...................................................................................................3 Section 2: Summary of Hits ....................................................................................................4 Section 3: Sample Results ........................................................................................................5 3.1: FA11242-1: SVE ...........................................................................................................6 Section 4: Misc. Forms ............................................................................................................7 4.1: Chain of Custody ...........................................................................................................8 Section 5: GC Volatiles - QC Data Summaries .....................................................................10 5.1: Method Blank Summary ................................................................................................11 5.2: Blank Spike Summary ...................................................................................................12 5.3: Duplicate Summary .......................................................................................................13 1 2 3 4 5 2 of 13 FA11242 Accutest Laboratories Sample Summary Cardno ATC Associates, Inc Job No:FA11242 Tilleys; 1710 Union Grove Rd, Lenior, NC Project No: 089.03451.1037 Sample Collected Matrix Client Number Date Time By Received Code Type Sample ID FA11242-1 12/30/13 13:00 CL 12/31/13 AIR Air SVE 3 of 13 FA11242 1 Summary of Hits Page 1 of 1 Job Number:FA11242 Account:Cardno ATC Associates, Inc Project:Tilleys; 1710 Union Grove Rd, Lenior, NC Collected:12/30/13 Lab Sample ID Client Sample ID Result/ Analyte Qual RL MDL Units Method FA11242-1 SVE Benzene 0.55 0.50 0.10 ppmv EPA TO-3 Toluene 11.6 0.50 0.10 ppmv EPA TO-3 Ethylbenzene 3.6 0.50 0.10 ppmv EPA TO-3 Xylenes (total)18.1 1.5 0.30 ppmv EPA TO-3 TPH as Equiv Pentane 271 5.0 1.0 ppmv EPA TO-3 Benzene 1.8 1.6 0.32 mg/m3 EPA TO-3 Toluene 43.7 1.9 0.38 mg/m3 EPA TO-3 Ethylbenzene 16 2.2 0.43 mg/m3 EPA TO-3 Xylenes (total)78.6 6.5 1.3 mg/m3 EPA TO-3 TPH as Equiv Pentane 798 15 2.9 mg/m3 EPA TO-3 4 of 13 FA11242 2 Accutest Laboratories Sample Results Report of Analysis Southeast Section 3 5 of 13 FA11242 3 Accutest Laboratories Report of Analysis Page 1 of 1 Client Sample ID:SVE Lab Sample ID:FA11242-1 Date Sampled:12/30/13 Matrix:AIR - Air Date Received:12/31/13 Method:EPA TO-3 Percent Solids:n/a Project:Tilleys; 1710 Union Grove Rd, Lenior, NC File ID DF Analyzed By Prep Date Prep Batch Analytical Batch Run #1 HH047742.D 1 12/31/13 SH n/a n/a GHH2542 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 0.55 0.50 0.10 ppmv 1.8 1.6 0.32 mg/m3 108-88-3 92.14 Toluene 11.6 0.50 0.10 ppmv 43.7 1.9 0.38 mg/m3 100-41-4 106.2 Ethylbenzene 3.6 0.50 0.10 ppmv 16 2.2 0.43 mg/m3 1330-20-7 106.2 Xylenes (total)18.1 1.5 0.30 ppmv 78.6 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 271 5.0 1.0 ppmv 798 15 2.9 mg/m3 CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits 460-00-4 4-Bromofluorobenzene 94%54-142% 460-00-4 4-Bromofluorobenzene 86%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 6 of 13 FA11242 3 3. 1 Accutest Laboratories Misc. Forms Custody Documents and Other Forms Includes the following where applicable: Chain of Custody Southeast Section 4 7 of 13 FA11242 4 FA11242: Chain of Custody Page 1 of 2 8 of 13 FA11242 4 4. 1 FA11242: Chain of Custody Page 2 of 2 9 of 13 FA11242 4 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 10 of 13 FA11242 5 Method Blank Summary Page 1 of 1 Job Number:FA11242 Account:ATCNCC Cardno ATC Associates, Inc Project:Tilleys; 1710 Union Grove Rd, Lenior, NC Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch GHH2542-MB HH047736.D1 12/31/13 SH n/a n/a GHH2542 The QC reported here applies to the following samples:Method: EPA TO-3 FA11242-1 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 84%54-142% 460-00-4 4-Bromofluorobenzene 91%54-142% 11 of 13 FA11242 5 5. 1 . 1 Blank Spike Summary Page 1 of 1 Job Number:FA11242 Account:ATCNCC Cardno ATC Associates, Inc Project:Tilleys; 1710 Union Grove Rd, Lenior, NC Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch GHH2542-BS HH047735.D1 12/31/13 SH n/a n/a GHH2542 The QC reported here applies to the following samples:Method: EPA TO-3 FA11242-1 Spike BSP BSP CAS No.Compound ppmv ppmv %Limits 1634-04-4 Methyl Tert Butyl Ether 10 8.8 88 60-111 71-43-2 Benzene 10 9.0 90 64-111 108-88-3 Toluene 10 9.3 93 60-112 100-41-4 Ethylbenzene 10 9.7 97 59-112 1330-20-7 Xylenes (total)30 29.7 99 58-110 TPH as Equiv Pentane 135 116 86 66-116 CAS No.Surrogate Recoveries BSP Limits 460-00-4 4-Bromofluorobenzene 85%54-142% 460-00-4 4-Bromofluorobenzene 94%54-142% * = Outside of Control Limits. 12 of 13 FA11242 5 5. 2 . 1 Duplicate Summary Page 1 of 1 Job Number:FA11242 Account:ATCNCC Cardno ATC Associates, Inc Project:Tilleys; 1710 Union Grove Rd, Lenior, NC Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch FA11238-2DUP HH047739.D1 12/31/13 SH n/a n/a GHH2542 FA11238-2 HH047738.D1 12/31/13 SH n/a n/a GHH2542 The QC reported here applies to the following samples:Method: EPA TO-3 FA11242-1 FA11238-2 DUP CAS No.Compound ppmv Q ppmv Q RPD Limits 1634-04-4 Methyl Tert Butyl Ether 0.50 U ND nc 10 71-43-2 Benzene 0.50 U ND nc 11 108-88-3 Toluene 0.50 U ND nc 14 100-41-4 Ethylbenzene 0.50 U ND nc 13 1330-20-7 Xylenes (total)1.5 U ND nc 15 TPH as Equiv Pentane 5.0 U ND nc 28 CAS No.Surrogate Recoveries DUP FA11238-2 Limits 460-00-4 4-Bromofluorobenzene 82%86%54-142% 460-00-4 4-Bromofluorobenzene 86%87%54-142% * = Outside of Control Limits. 13 of 13 FA11242 5 5. 3 . 1