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C A M B R I A <br />Dispenser/Piping Removal Date: February 7 and 8, 2001 <br />Dispenser/Piping Trench Soil Sampling Date: February 9, 2001. <br />Ms. Letitia Briggs <br />June 26, 2001 <br />Piping and Dispenser Island Compliance Sampling: Cambria performed soil sampling beneath <br />the former dispenser islands and product piping on February 9, 2001. The sampling was <br />conducted under the supervision of Senior Registered Environmental Health Inspector Ms. Letitia <br />Briggs of the SJCEHD. Soil samples D-1 through D-6 were collected from beneath the dispenser <br />islands at depths ranging from 3.5 ft bgs to 4.5 ft bgs. Soil sample P-1 was collected from beneath <br />the piping trenches between the dispenser islands and UST at approximately 5 ft bgs. <br />Sampling Procedures and Handling: All sampling was performed in accordance with Cambria's <br />Cambria's Standard Piping and Dispenser Removal Sampling Procedures, presented as <br />Attachment B. The samples were placed into a cooler with ice and delivered under standard <br />chain -of -custody procedures to a state -certified laboratory. <br />ANALYTICAL TESTING AND RESULTS <br />Soil samples were analyzed for total petroleum hydrocarbons as gasoline (TPHg) and total <br />petroleum hydrocarbons as diesel (TPHd) by modified EPA Method 8015, and for benzene, <br />toluene, ethylbenzene, and xylenes (BTEX) and methyl tert-butyl ether (MTBE) by EPA Method <br />8020. Samples with reported MTBE concentrations were re -analyzed using EPA Method 826013. <br />Certified laboratory analytical results are presented in Attachment C. <br />Dispenser Island Sample Analytical Results (DP -1 through DP -6): Benzene was detected in <br />only one of seven soil samples collected at a concentration of 0.26 mg/kg (D-1-4). TPHg was <br />detected in two of seven analyzed soil samples with a maximum concentration of 5.5 mg/kg. <br />TPHd concentrations ranged from below laboratory reporting limits to 1.3 mg/kg in soil sample <br />D-3-4. A concentration of 5.6 mg/kg MTBE was detected by EPA Method 8260 in soil sample <br />D-4-3.5. No MTBE was detected in any remaining analyzed soil sample. A concentration of <br />330 mg/kg Tert-Butanol (TBA) was detected in soil sample D-2-4.5. <br />Product Piping Sample Analytical Results (P-1): No TPHg, BTEX or MTBE was detected in <br />soil sample P-1-5. 2,300 mg/kg TBA was detected in soil sample P-1-5. <br />2 <br />