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Home My WebLink About20085_Arbor_East-Village_Soil_Assessment_20120907AECOM Technical Services of North Carolina, Inc. 701 Corporate Center Drive, Suite 475, Raleigh, North Carolina 27607 T 919.854.6200 F 919.854.6259 www.aecom.com September 7, 2012 Address to: Mr. Tim Simpson, PE Town of Clayton PO Box 879 Clayton, NC 27520 Reference: Proposed E. Front Street Extension Limited Soil Assessment Clayton, Johnston County, North Carolina NCDOT TIP No. U-3605 AECOM Project No.60267800 Dear Mr. Simpson: AECOM Technical Services of North Carolina, Inc., (AECOM) has completed the limited soil assessment conducted on the proposed E. Front Street Extension right-of-way. The work was performed in accordance with the Technical and Cost proposal dated August 16, 2012. Activities associated with this assessment consisted of collecting soil samples for laboratory analysis and classifying the soils. The purpose of this report is to document the field activities and present the findings. Location and Description The project consists of the extension of E. Front Street from its current easternmost terminus at Mill Street to Old NC Highway 42 East (NCDOT TIP # U-3605) in Clayton, North Carolina. A hydrocarbon release from the former Leeway Service Center 10141 US Business 70 West was noted during the project records search. Environmental reports prepared by East Coast Environmental, PA (ECE) indicate the release may have impacted the soil and groundwater in the immediate project vicinity. AECOM conducted a limited soil assessment to identify potential hydrocarbons that may impact the construction process and to protect worker safety. Based on the depth of anticipated cut sections, no groundwater should be encountered during road construction. As such, no groundwater sampling was conducted. Assessment Activities AECOM conducted the limited soil assessment on August 21, 2012. Five boreholes approximately 100 feet apart were advanced at locations indicated by the ECE reports as likely points where environmental impact may intersect with the proposed E. Front Street Extension right-of-way. The borings were advanced by Froehling & Robertson (F&R) with a conventional rotary drill rig mounted on an ATV. The rig was operated by a drill crew that has OSHA 40-Hr. Health & Safety Training, and the driller was a NC Certified Well Driller. The borings were performed using hollow stem augers for borehole stabilization. Standard Penetration Test (SPT) sampling Mr. Tim Simpson September 7, 2012 Page 2 was performed continuously from the ground surface to boring termination. The borings were advanced to a depth of 10 feet below ground surface. Construction plans indicate that cut sections through this area will be less than five feet. Upon completion of drilling, the boring was backfilled with bentonite chips to above the groundwater table encountered at about 9.5 feet below ground surface and with soil cuttings above that depth. At the completion of field work, a geotechnical engineer from F&R visually classified the soil samples in accordance with the AASHTO soil classification system and prepared a Boring Log for each test boring (Attachment 1). Figure 1 shows the approximate borehole locations. An environmental professional from AECOM was on-site to observe the drilling activities and obtain soil samples for field screening and analytical testing. Each soil sample was field screened, consisting of placing the soil sample into a resealable plastic bag and allowing organic vapors to volatilize into the headspace. The headspace was measured with a flame-ionization and photo ionization detector (FID/PID). The depths of the submitted soil samples were field-determined based on the field screening results, visual observations, and depth to groundwater. Soil samples were submitted to SGS Analytical, a North Carolina-certified laboratory and analyzed for diesel range organics (DRO) and gasoline range organics (GRO). The geotechnical reports indicate underlying soils are predominately a mixture of sandy clays and clayey sands. Groundwater was encountered in one borehole (L3800L) at a depth of approximately 9.5 feet below ground surface. The analytical results (Table 1) indicate that no diesel range or gasoline range organics were detected in any of the five submitted samples. The laboratory analytical reports are presented in Attachment 2 of this report. Table 1 Town of Clayton E. Front Street Extension Right-of-Way Soil Sample Location and Results Summary Sample ID Lat Long Sample Depth (Ft. BGS) DRO (mg/kg) GRO (mg/kg) L3400R 35.6414 - 78.447 6'- 8'ND ND L3500L 35.6413 - 78.447 4' - 6'ND ND L3600R 35.641 - 78.447 2' - 4'ND ND L3700L 35.641 - 78.446 4' - 6'ND ND L3800L 35.6409 - 78.446 2' - 4'ND ND BGS - Below Ground Surface DRO - Diesel Range Organics GRO - Gasoline Range Organics ND - Not Detected Mr. Tim Simpson September 7, 2012 Page 3 Conclusions On August 21, 2012, AECOM collected soil samples from the proposed E. Front Street Extension right-of-way in Clayton, Johnston County, North Carolina. As part of the assessment, five soil samples were collected from the proposed right-of-way. Sample depths ranged from two feet to eight feet below ground surface. The analytical results indicate that no diesel range or gasoline range organics were detected in any of the samples. Based on the analytical reports and field observations the soil in the assessment area to a depth of 8 feet below ground surface has not been impacted by the release from the former Leeway Service Center. Although this assessment detected no hydrocarbons in the soil along the proposed right-of-way, there is a possibility of hydrocarbon affected soil between the borings. AECOM recommends that any contract for road construction contains language stating the potential for contamination and that the contractor will be responsible for proper analysis and disposal of any suspected contaminated soil and for providing applicable worker health and safety protection. AECOM appreciates the opportunity to work with the Town of Clayton on this project. If you have any questions, please contact me at (919)854-6238. Sincerely, Michael W. Branson, P.G.Sreekanth (Sunny) Nandagiri, PE, PMP Project Geologist Project Manager Attachments c:Project File ATTACHMENT 1 BORING LOGS NOTE: sample from 2'-4' submitted by AECOM for analysis of DRo/GRODRO/GRO ATTACHMENT 2 ANALYTICAL REPORTS Report Number:31202688 Client Project:Clayton Laboratory Report of Analysis Rob Holland AECOM INC 701 CORPORATE DR STE 475 RALEIGH, NC 27607 US Dear Rob Holland, Enclosed are the results of the analytical services performed under the referenced project for the received samples and associated QC as applicable. The samples are certified to meet the requirements of the National Environmental Laboratory Accreditation Conference Standards. Copies of this report and supporting data will be retained in our files for a period of five years in the event they are required for future reference. All results are intended to be used in their entirety and SGS is not responsible for use of less than the complete report. Any samples submitted to our laboratory will be retained for a maximum of thirty (30) days from the date of this report unless other arrangements are requested. If there are any questions about the report or services performed during this project, please call Barbara A. Hager at (910) 350-1903. We will be happy to answer any questions or concerns which you may have. Thank you for using SGS North America Inc. for your analytical services. We look forward to working with you again on any additional analytical needs. Sincerely, SGS North America Inc. __________________________________________________________________ Barbara A. Hager Date Project Manager barbara.hager@sgs.com To: Print Date: 08/28/2012 N.C. Certification # 481 Page 1 of 23 Laboratory Qualifiers Report Definitions DL Method, Instrument, or Estimated Detection Limit per Analytical Method CL Control Limits for the recovery result of a parameter LOQ Reporting Limit DF Dilution Factor RPD Relative Percent Difference LCS(D)Laboratory Control Spike (Duplicate) MS(D)Matrix Spike (Duplicate) MB Method Blank Qualifier Definitions *Recovery or RPD outside of control limits B Analyte was detected in the Lab Method Blank at a level above the LOQ U Undetected (Reported as ND or < DL) V Recovery is below quality control limit. The data has been validated based on a favorable signal-to-noise and detection limit A Amount detected is less than the Lower Method Calibration Limit J Estimated Concentration. O The recovery of this analyte in the OPR is above the Method QC Limits and the reported concentration in the sample may be biased high E Amount detected is greater than the Upper Calibration Limit S The amount of analyte present has saturated the detector. This situation results in an underestimation of the affected analyte(s) Q Indicates the presence of a quantitative interference. This situation may result in an underestimation of the affected analyte(s) I Indicates the presence of a qualitative interference that could cause a false positive or an overestimation of the affected analyte(s) DPE Indicates the presence of a peak in the polychlorinated diphenylether channel that could cause a false positive or an overestimation of the affected analyte(s) TIC Tentatively Identified Compound EMPC Estimated Maximum possible Concentration due to ion ratio failure ND Not Detected K Result is estimated due to ion ratio failure in High Resolution PCB Analysis P RPD > 40% between results of dual columns D Spike or surrogate was diluted out in order to achieve a parameter result within instrument calibration range Samples requiring manual integrations for various congeners and/or standards are marked and dated by the analyst. A code definition is provided below: M1 Mis-identified peak M2 Software did not integrate peak M3 Incorrect baseline construction (i.e. not all of peak included; two peaks integrated as one) M4 Pattern integration required (i.e. DRO, GRO, PCB, Toxaphene and Technical Chlordane) M5 Other - Explained in case narrative Note Results pages that include a value for "Solids (%)" have been adjusted for moisture content. Print Date: 08/28/2012 N.C. Certification # 481 Page 2 of 23 Sample Summary Client Sample ID Lab Sample ID Collected Received Matrix L-3700L 31202688001 08/21/2012 09:00 08/22/2012 13:00 Soil-Solid as dry weight L3800 31202688002 08/21/2012 09:50 08/22/2012 13:00 Soil-Solid as dry weight L-3600R 31202688003 08/21/2012 10:45 08/22/2012 13:00 Soil-Solid as dry weight L-3400R 31202688004 08/21/2012 11:30 08/22/2012 13:00 Soil-Solid as dry weight L-3500L 31202688005 08/21/2012 12:20 08/22/2012 13:00 Soil-Solid as dry weight Print Date: 08/28/2012 N.C. Certification # 481 Page 3 of 23 Detectable Results Summary * No Detectable Results * Print Date: 08/28/2012 N.C. Certification # 481 Page 4 of 23 Client Sample ID: L-3700L Client Project ID: Clayton Lab Sample ID: 31202688001-A Lab Project ID: 31202688 Collection Date: 08/21/2012 09:00 Received Date: 08/22/2012 13:00 Matrix: Soil-Solid as dry weight Solids (%): 90.00 DL LOQ/CLResultQual Units DFParameter Results by SW-846 8015C GRO Results of L-3700L Date Analyzed Gasoline Range Organics (GRO)ND mg/kg 1U3.393.39 08/27/2012 11:59 Surrogates 4-Bromofluorobenzene 100 %170.0-130 08/27/2012 11:59 Batch Information Prep Batch: VXX3904 Prep Method: SW-846 5035 Prep Date/Time: 08/22/2012 14:54 Prep Initial Wt./Vol.: 6.55 g Prep Extract Vol: 5 mL Analytical Batch: VGC2100 Analytical Method: SW-846 8015C GRO Instrument: GC7 Analyst: MDY Analytical Date/Time: 08/27/2012 11:59 Print Date: 08/28/2012 N.C. Certification # 481 Page 5 of 23 Client Sample ID: L-3700L Client Project ID: Clayton Lab Sample ID: 31202688001-C Lab Project ID: 31202688 Collection Date: 08/21/2012 09:00 Received Date: 08/22/2012 13:00 Matrix: Soil-Solid as dry weight Solids (%): 90.00 DL LOQ/CLResultQual Units DFParameter Results by SW-846 8015C DRO Results of L-3700L Date Analyzed Diesel Range Organics (DRO)ND mg/kg 1U6.776.77 08/24/2012 3:02 Surrogates o-Terphenyl 97.2 %140.0-140 08/24/2012 3:02 Batch Information Prep Batch: XXX2971 Prep Method: SW-846 3541 Prep Date/Time: 08/23/2012 09:29 Prep Initial Wt./Vol.: 32.81 g Prep Extract Vol: 10 mL Analytical Batch: XGC2475 Analytical Method: SW-846 8015C DRO Instrument: GC6 Analyst: DTF Analytical Date/Time: 08/24/2012 03:02 Print Date: 08/28/2012 N.C. Certification # 481 Page 6 of 23 Client Sample ID: L3800 Client Project ID: Clayton Lab Sample ID: 31202688002-A Lab Project ID: 31202688 Collection Date: 08/21/2012 09:50 Received Date: 08/22/2012 13:00 Matrix: Soil-Solid as dry weight Solids (%): 87.20 DL LOQ/CLResultQual Units DFParameter Results by SW-846 8015C GRO Results of L3800 Date Analyzed Gasoline Range Organics (GRO)ND mg/kg 1U3.133.13 08/27/2012 12:24 Surrogates 4-Bromofluorobenzene 101 %170.0-130 08/27/2012 12:24 Batch Information Prep Batch: VXX3904 Prep Method: SW-846 5035 Prep Date/Time: 08/22/2012 14:55 Prep Initial Wt./Vol.: 7.32 g Prep Extract Vol: 5 mL Analytical Batch: VGC2100 Analytical Method: SW-846 8015C GRO Instrument: GC7 Analyst: MDY Analytical Date/Time: 08/27/2012 12:24 Print Date: 08/28/2012 N.C. Certification # 481 Page 7 of 23 Client Sample ID: L3800 Client Project ID: Clayton Lab Sample ID: 31202688002-C Lab Project ID: 31202688 Collection Date: 08/21/2012 09:50 Received Date: 08/22/2012 13:00 Matrix: Soil-Solid as dry weight Solids (%): 87.20 DL LOQ/CLResultQual Units DFParameter Results by SW-846 8015C DRO Results of L3800 Date Analyzed Diesel Range Organics (DRO)ND mg/kg 1U7.257.25 08/24/2012 3:30 Surrogates o-Terphenyl 94.6 %140.0-140 08/24/2012 3:30 Batch Information Prep Batch: XXX2971 Prep Method: SW-846 3541 Prep Date/Time: 08/23/2012 09:29 Prep Initial Wt./Vol.: 31.64 g Prep Extract Vol: 10 mL Analytical Batch: XGC2475 Analytical Method: SW-846 8015C DRO Instrument: GC6 Analyst: DTF Analytical Date/Time: 08/24/2012 03:30 Print Date: 08/28/2012 N.C. Certification # 481 Page 8 of 23 Client Sample ID: L-3600R Client Project ID: Clayton Lab Sample ID: 31202688003-A Lab Project ID: 31202688 Collection Date: 08/21/2012 10:45 Received Date: 08/22/2012 13:00 Matrix: Soil-Solid as dry weight Solids (%): 86.70 DL LOQ/CLResultQual Units DFParameter Results by SW-846 8015C GRO Results of L-3600R Date Analyzed Gasoline Range Organics (GRO)ND mg/kg 1U3.973.97 08/27/2012 12:49 Surrogates 4-Bromofluorobenzene 101 %170.0-130 08/27/2012 12:49 Batch Information Prep Batch: VXX3904 Prep Method: SW-846 5035 Prep Date/Time: 08/22/2012 14:55 Prep Initial Wt./Vol.: 5.81 g Prep Extract Vol: 5 mL Analytical Batch: VGC2100 Analytical Method: SW-846 8015C GRO Instrument: GC7 Analyst: MDY Analytical Date/Time: 08/27/2012 12:49 Print Date: 08/28/2012 N.C. Certification # 481 Page 9 of 23 Client Sample ID: L-3600R Client Project ID: Clayton Lab Sample ID: 31202688003-C Lab Project ID: 31202688 Collection Date: 08/21/2012 10:45 Received Date: 08/22/2012 13:00 Matrix: Soil-Solid as dry weight Solids (%): 86.70 DL LOQ/CLResultQual Units DFParameter Results by SW-846 8015C DRO Results of L-3600R Date Analyzed Diesel Range Organics (DRO)ND mg/kg 1U7.057.05 08/24/2012 3:58 Surrogates o-Terphenyl 91.8 %140.0-140 08/24/2012 3:58 Batch Information Prep Batch: XXX2971 Prep Method: SW-846 3541 Prep Date/Time: 08/23/2012 09:29 Prep Initial Wt./Vol.: 32.72 g Prep Extract Vol: 10 mL Analytical Batch: XGC2475 Analytical Method: SW-846 8015C DRO Instrument: GC6 Analyst: DTF Analytical Date/Time: 08/24/2012 03:58 Print Date: 08/28/2012 N.C. Certification # 481 Page 10 of 23 Client Sample ID: L-3400R Client Project ID: Clayton Lab Sample ID: 31202688004-A Lab Project ID: 31202688 Collection Date: 08/21/2012 11:30 Received Date: 08/22/2012 13:00 Matrix: Soil-Solid as dry weight Solids (%): 83.80 DL LOQ/CLResultQual Units DFParameter Results by SW-846 8015C GRO Results of L-3400R Date Analyzed Gasoline Range Organics (GRO)ND mg/kg 1U3.313.31 08/27/2012 13:15 Surrogates 4-Bromofluorobenzene 100 %170.0-130 08/27/2012 13:15 Batch Information Prep Batch: VXX3904 Prep Method: SW-846 5035 Prep Date/Time: 08/22/2012 14:56 Prep Initial Wt./Vol.: 7.22 g Prep Extract Vol: 5 mL Analytical Batch: VGC2100 Analytical Method: SW-846 8015C GRO Instrument: GC7 Analyst: MDY Analytical Date/Time: 08/27/2012 13:15 Print Date: 08/28/2012 N.C. Certification # 481 Page 11 of 23 Client Sample ID: L-3400R Client Project ID: Clayton Lab Sample ID: 31202688004-C Lab Project ID: 31202688 Collection Date: 08/21/2012 11:30 Received Date: 08/22/2012 13:00 Matrix: Soil-Solid as dry weight Solids (%): 83.80 DL LOQ/CLResultQual Units DFParameter Results by SW-846 8015C DRO Results of L-3400R Date Analyzed Diesel Range Organics (DRO)ND mg/kg 1U7.317.31 08/24/2012 4:26 Surrogates o-Terphenyl 102 %140.0-140 08/24/2012 4:26 Batch Information Prep Batch: XXX2971 Prep Method: SW-846 3541 Prep Date/Time: 08/23/2012 09:29 Prep Initial Wt./Vol.: 32.66 g Prep Extract Vol: 10 mL Analytical Batch: XGC2475 Analytical Method: SW-846 8015C DRO Instrument: GC6 Analyst: DTF Analytical Date/Time: 08/24/2012 04:26 Print Date: 08/28/2012 N.C. Certification # 481 Page 12 of 23 Client Sample ID: L-3500L Client Project ID: Clayton Lab Sample ID: 31202688005-A Lab Project ID: 31202688 Collection Date: 08/21/2012 12:20 Received Date: 08/22/2012 13:00 Matrix: Soil-Solid as dry weight Solids (%): 85.70 DL LOQ/CLResultQual Units DFParameter Results by SW-846 8015C GRO Results of L-3500L Date Analyzed Gasoline Range Organics (GRO)ND mg/kg 1U3.383.38 08/27/2012 13:40 Surrogates 4-Bromofluorobenzene 102 %170.0-130 08/27/2012 13:40 Batch Information Prep Batch: VXX3904 Prep Method: SW-846 5035 Prep Date/Time: 08/22/2012 14:57 Prep Initial Wt./Vol.: 6.9 g Prep Extract Vol: 5 mL Analytical Batch: VGC2100 Analytical Method: SW-846 8015C GRO Instrument: GC7 Analyst: MDY Analytical Date/Time: 08/27/2012 13:40 Print Date: 08/28/2012 N.C. Certification # 481 Page 13 of 23 Client Sample ID: L-3500L Client Project ID: Clayton Lab Sample ID: 31202688005-C Lab Project ID: 31202688 Collection Date: 08/21/2012 12:20 Received Date: 08/22/2012 13:00 Matrix: Soil-Solid as dry weight Solids (%): 85.70 DL LOQ/CLResultQual Units DFParameter Results by SW-846 8015C DRO Results of L-3500L Date Analyzed Diesel Range Organics (DRO)ND mg/kg 1U7.157.15 08/24/2012 4:54 Surrogates o-Terphenyl 91.8 %140.0-140 08/24/2012 4:54 Batch Information Prep Batch: XXX2971 Prep Method: SW-846 3541 Prep Date/Time: 08/23/2012 09:29 Prep Initial Wt./Vol.: 32.64 g Prep Extract Vol: 10 mL Analytical Batch: XGC2475 Analytical Method: SW-846 8015C DRO Instrument: GC6 Analyst: DTF Analytical Date/Time: 08/24/2012 04:54 Print Date: 08/28/2012 N.C. Certification # 481 Page 14 of 23 Batch Summary SW-846 8015C GRO SW-846 5035Analytical Method:Prep Method: VXX3904 08/27/2012 09:29 Prep Batch: Prep Date: Client Sample ID Analysis Date Instrument AnalystLab Sample ID Analytical Batch LCS for HBN 27967 [VXX/3904]08/27/2012 10:42 GC7 MDY86991VGC2100 LCSD for HBN 27967 [VXX/3904]08/27/2012 11:08 GC7 MDY86992VGC2100 MB for HBN 27967 [VXX/3904]08/27/2012 11:33 GC7 MDY86993VGC2100 L-3700L 08/27/2012 11:59 GC7 MDY31202688001VGC2100 L3800 08/27/2012 12:24 GC7 MDY31202688002VGC2100 L-3600R 08/27/2012 12:49 GC7 MDY31202688003VGC2100 L-3400R 08/27/2012 13:15 GC7 MDY31202688004VGC2100 L-3500L 08/27/2012 13:40 GC7 MDY31202688005VGC2100 L-3500L(86496MS)08/27/2012 14:05 GC7 MDY87138VGC2100 L-3500L(86496MSD)08/27/2012 14:31 GC7 MDY87139VGC2100 Print Date: 08/28/2012 N.C. Certification # 481 Page 15 of 23 Blank ID: MB for HBN 27967 [VXX/3904] Blank Lab ID: 86993 Matrix: Soil-Solid as dry weight Results by SW-846 8015C GRO Method Blank Parameter Result LOQ/CLDL Units DFQual QC for Samples: 31202688001, 31202688002, 31202688003, 31202688004, 31202688005 Gasoline Range Organics (GRO)ND 4.004.00 mg/kg 1U Surrogates 4-Bromofluorobenzene 92.8 70.0-130 %1 Batch Information Prep Batch: VXX3904 Prep Method: SW-846 5035 Prep Date/Time: 8/27/2012 9:29:56AM Prep Initial Wt./Vol.: 5 g Prep Extract Vol: 5 mL Analytical Batch: VGC2100 Analytical Method: SW-846 8015C GRO Instrument: GC7 Analyst: MDY Analytical Date/Time: 8/27/2012 11:33:00AM Print Date: 08/28/2012 N.C. Certification # 481 Page 16 of 23 Blank Spike ID: LCS for HBN 27967 [VXX/3904] Blank Spike Lab ID: 86991 Date Analyzed: 08/27/2012 10:42 Spike Duplicate ID: LCSD for HBN 27967 [VXX/3904] Spike Duplicate Lab ID: 86992 Date Analyzed: 08/27/2012 11:08 Results by SW-846 8015C GRO Blank Spike Summary Matrix: Soil-Solid as dry weight Parameter Spike Result Rec (%)Spike Result Rec (%)RPD (%)CL Blank Spike (mg/kg) RPD CL Spike Duplicate (mg/kg) 31202688001, 31202688002, 31202688003, 31202688004, 31202688005QC for Samples: Gasoline Range Organics (GRO)16.0 16.1 1.810116.0 16.4 103 70.0-130 30.00 Surrogates 4-Bromofluorobenzene 96.7 95.1 70.0-130 Batch Information Analytical Batch: VGC2100 Analytical Method: SW-846 8015C GRO Instrument: GC7 Analyst: MDY Prep Batch: VXX3904 Prep Method: SW-846 5035 Prep Date/Time: 08/27/2012 09:29 Spike Init Wt./Vol.: 5 g Extract Vol: 5 mL Dupe Init Wt./Vol.: 5 g Extract Vol: 5 mL Print Date: 08/28/2012 N.C. Certification # 481 Page 17 of 23 Original Sample ID: 31202688005 (L-3500L) MS Sample ID: 87138 MSD Sample ID: 87139 Analysis Date: 08/27/2012 13:40 Analysis Date: 08/27/2012 14:05 Analysis Date: 08/27/2012 14:31 Matrix: Soil-Solid as dry weight Results by SW-846 8015C GRO Matrix Spike Summary Parameter Sample Spike Result Rec (%)Spike Result Rec (%)RPD (%) Matrix Spike (mg/kg)Spike Duplicate (mg/kg) CL RPD CL QC for Samples:31202688001, 31202688002, 31202688003, 31202688004, 31202688005 Gasoline Range Organics (GRO)ND 13.5 13.7 13.5 14.5 107 5.0101 30.0070.0-130 Batch Information Analytical Batch: VGC2100 Analytical Method: SW-846 8015C GRO Instrument: GC7 Analyst: MDY Prep Batch: VXX3904 Prep Method: SW-846 5035 Prep Date/Time: 08/22/2012 14:57 MS Init Wt./Vol.: 6.9 g Extract Vol.: 5 mL MSD Init Wt./Vol.: 6.9 g Extract Vol.: 5 mL Print Date: 08/28/2012 N.C. Certification # 481 Page 18 of 23 Batch Summary SW-846 8015C DRO SW-846 3541Analytical Method:Prep Method: XXX2971 08/23/2012 09:29 Prep Batch: Prep Date: Client Sample ID Analysis Date Instrument AnalystLab Sample ID Analytical Batch MB for HBN 27728 [XXX/2971]08/23/2012 20:57 GC6 DTF86647XGC2475 LCS for HBN 27728 [XXX/2971]08/23/2012 21:25 GC6 DTF86648XGC2475 SB64-13:6-8(86489MS)08/24/2012 02:06 GC6 DTF86649XGC2475 SB64-13:6-8(86489MSD)08/24/2012 02:34 GC6 DTF86650XGC2475 L-3700L 08/24/2012 03:02 GC6 DTF31202688001XGC2475 L3800 08/24/2012 03:30 GC6 DTF31202688002XGC2475 L-3600R 08/24/2012 03:58 GC6 DTF31202688003XGC2475 L-3400R 08/24/2012 04:26 GC6 DTF31202688004XGC2475 L-3500L 08/24/2012 04:54 GC6 DTF31202688005XGC2475 Print Date: 08/28/2012 N.C. Certification # 481 Page 19 of 23 Blank ID: MB for HBN 27728 [XXX/2971] Blank Lab ID: 86647 Matrix: Soil-Solid as dry weight Results by SW-846 8015C DRO Method Blank Parameter Result LOQ/CLDL Units DFQual QC for Samples: 31202688001, 31202688002, 31202688003, 31202688004, 31202688005 Diesel Range Organics (DRO)ND 6.256.25 mg/kg 1U Surrogates o-Terphenyl 106 40.0-140 %1 Batch Information Prep Batch: XXX2971 Prep Method: SW-846 3541 Prep Date/Time: 8/23/2012 9:29:28AM Prep Initial Wt./Vol.: 32 g Prep Extract Vol: 10 mL Analytical Batch: XGC2475 Analytical Method: SW-846 8015C DRO Instrument: GC6 Analyst: DTF Analytical Date/Time: 8/23/2012 8:57:00PM Print Date: 08/28/2012 N.C. Certification # 481 Page 20 of 23 Blank Spike ID: LCS for HBN 27728 [XXX/2971] Blank Spike Lab ID: 86648 Date Analyzed: 08/23/2012 21:25 Results by SW-846 8015C DRO Blank Spike Summary Matrix: Soil-Solid as dry weight Parameter Spike Result Rec (%)CL Blank Spike (mg/kg) 31202688001, 31202688002, 31202688003, 31202688004, 31202688005QC for Samples: Diesel Range Organics (DRO)62.5 67.4 108 55.0-137 Surrogates o-Terphenyl 109 40.0-140 Batch Information Analytical Batch: XGC2475 Analytical Method: SW-846 8015C DRO Instrument: GC6 Analyst: DTF Prep Batch: XXX2971 Prep Method: SW-846 3541 Prep Date/Time: 08/23/2012 09:29 Spike Init Wt./Vol.: 32 g Extract Vol: 10 mL Dupe Init Wt./Vol.: Extract Vol: Print Date: 08/28/2012 N.C. Certification # 481 Page 21 of 23 Page 22 of 23 Page 23 of 23