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Mr. Kenneth Earnest Ultramar Inc. November 29, 1994 l Page 2 On November 3, 1994, the excavation at sample location PL-2 was deepened and soil sample PL-2B was collected at a depth of 12 feet below grade. The excavation was further deepened and sample PL-2C was collected at a depth of 14 feet. Soil Sample Analytical Results Each of the soil samples were submitted to West Laboratory in Davis, California for overnight laboratory analysis of benzene, toluene, ethylbenzene, total xylenes (BTEX), and total petroleum hydrocarbons (TPH) as gasoline. All soil samples except soil samples PL-2B and PL-2C were also analyzed for total lead. Analytical results are summarized in Table 1 and copies of the analytical laboratory reports are presented in Enclosure A. The analytical results indicate that soil samples collected from the maximum depth at each sampling location did not contain detectable concentrations of petroleum hydrocarbons, except sample PL-5A, which contained xylenes at a concentration of 0.0066 milligrams per kilogram (mg/kg}. Total lead was not detected in any of the product line soil samples, however was reported at a concentration of 13 mg/kg from one composite soil sample. Soil Stockpile Sampling !� Approximately 100 cubic yards of soil were excavated and stockpiled on-site. Composite samples from the soil stockpiles were submitted for laboratory analysis of BTEX, TPH as gasoline, and Iead. Analytical results are included in Table 1, and copies of the analytical laboratory reports are included in Enclosure A. Following receipt of the laboratory analysis of the stockpile soil, the excavated soil was transported by Ben's Trucking to their facility in Red Bluff, California. for recycling. Remarks/Signatures The information contained in this report is based in part on information supplied by the client. The work was conducted in accordance with currently available information and with currently accepted hydrogeologic and engineering practices at this time and location. Other than this, no warranty is implied or intended. Delta recommends that copies of this report be forwarded to: Mr. Harlin Knoll Mr. James B. Maughan Environmental Health Division California Regional Water Public Health Services Quality Control Board, San Joaquin County Central Valley Region 1601 East Hazelton Avenue 3443 Routier Road Stockton, California, 95201 Sacramento, California 95827