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F KEI-P89-1104 .QR1 April 191 1991 r Page 2 KEI returned to the site on November 20, 1989 in order to collect soil samples from the on-site product pipe trenches. Four samples, labeled P1 through P4 , were collected from the product pipe trenches. Two samples, labeled VPI and VP2 , were collected from the vapor pipe trenches, and one sample, labeled WP1, was collected from the waste oil remote fill pipe trench. All seven soil samples were collected at depths ranging from 2 . 5 to 3 . 5 feet. Pipe trench sample point locations are as shown on the attached Site Plan, Figure 4 . In an attempt to remove as much of the contaminated soil as possible in the fuel tank pit, KEI returned to the site on December 5, 1989 to observe additional soil excavation in the area of sample points A2 and B2 as described in KEI 's work plan (KEI-P89-1104 .P1) dated November 22 , 1989 . Soil was excavated from the southerly half of the fuel tank pit to a depth of 26 . 5 feet. Two soil samples, labeled A2 (25 . 5) and B2 (26. 5) , were collected from the fuel tank pit below sample point location A2 at a depth of 25. 5 feet, and below sample point location B2 at a depth of 26. 5 feet, respectively. Four soil samples, labeled SW1 (13) , SW1 (19) , SW2 (20/13) and SW2 (20/19) , were also collected from the tank pit sidewalls at depths of 13 and 19 feet. Sample point locations are shown on the attached Site Plan, Figure 3 . Mr. Harlin Knoll of the SJCPHS was present during sampling. KEI again returned to the site on December 7 , 1989 in order to complete sampling of the southerly half of the fuel tank pit. Two soil samples, labeled SW3 (20/13) and SW3 (20/19) , were collected from the tank pit sidewalls at depths of 13 and 19 feet, respec- tively. In addition, one soil sample, labeled NSW, was collected from the northerly sidewall of the new fuel tank pit at a depth of 13 . 5 feet. Sample point locations are as shown on the attached Site Plan, Figure 3 . On December 13, 1989, KEI completed sampling of the old fuel tank pit when three sidewall soil samples, labeled SW4 (3) SW5 and SW6, were collected from the northerly half of the old fuel tank pit at a depth of approximately 16 feet. Sample point locations are shown on the attached Site Plan, Figure 3 . Also on December 13 , 1989 , four additional soil samples, labeled P1 (6) , P2 (17) , P3 (5) and P4 (8) , were collected from the product pipe trenches at sample point locations P1, P2 , P3 and P4, respectively. Sample depths ranged from 5 to 17 feet. Sample point locations are as shown on the attached Site Plan, Figure 4 . After sampling, the product pipe trenches were excavated to the sample depths. Upon review of the laboratory analyses for these samples, a 15-inch diameter casing (14 feet deep) was installed near sample point location P2 (17) .