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KEI-P89-1104 .QR4
<br /> February 3 , 1992
<br /> Page 2
<br /> the waste oil tank at a depth of 9. 5 feet below grade. Sample
<br /> locations are as shown on the attached Site Plan, Figure 2 .
<br /> KEI returned to the site on November 20, 1989, in order to collect
<br /> soil samples from the on-site product pipe trenches. Four samples,
<br /> labeled P1 through P4 , were collected from the product pipe
<br /> trenches. Two samples, labeled VP1 and VP2, were collected from
<br /> the vapor pipe trenches, and one sample, labeled WP1, was collected
<br /> from the waste oil remote-fill pipe trench. All seven soil samples
<br /> were collected at depths ranging from 2 . 5 to 3 . 5 feet below grade.
<br /> Pipe trench sample point locations are as shown on the attached
<br /> Site Plan, Figure 4 .
<br /> In an attempt to remove as much of the contaminated soil as
<br /> possible in the vicinity of the fuel tank pit, KEI returned to the
<br /> site on December 5, 1989, to observe additional soil excavation in
<br /> the area of sample points A2 and B2 , as described in KEIIIs work
<br /> plan (KEI-P89-1104 .P1) dated November 22 , 1989. Soil was excavated
<br /> from the southerly half of the fuel tank pit to a depth of 26. 5
<br /> feet below grade. Two soil samples, labeled A2 (25. 5) and B2 (26. 5) ,
<br /> were collected from the fuel tank pit (one of the additional
<br /> samples was collected below sample point location A2 at a depth of
<br /> 25. 5 feet below grade, and the other additional sample was
<br /> collected below sample point location B2 at a depth of 26. 5 feet
<br /> below grade, respectively) . Four soil samples, labeled SW1(13) ,
<br /> SW1 (19) , SW2 (20/13) , and SW2 (20/19) , were also collected from the
<br /> fuel tank pit sidewalls at depths of 13 and 19 feet below grade.
<br /> Sample point locations are shown on the attached Site Plan, Figure
<br /> 3 . Mr. Harlin Knoll of the SJCPHS was present during sampling.
<br /> KEI again returned to the site on December 7, 1989 , in order to
<br /> complete sampling of the southerly half of the fuel tank pit. Two
<br /> soil samples, labeled SW3 (20/13) and SW3 (20/19) , were collected
<br /> from the tank pit sidewalls at depths of 13 and 19 feet below
<br /> grade, respectively. In addition, one soil sample, labeled NSW,
<br /> was collected from the northerly sidewall of the new fuel tank pit
<br /> at a depth of 13 . 5 feet below grade. Sample point locations are as
<br /> shown on the attached Site Plan, Figure 3 . On December 13 , 1989,
<br /> KEI completed sampling of the old fuel tank pit when three sidewall
<br /> soil samples, labeled SW4 (3) , SW5, and SW6, were collected from the
<br /> northerly half of the old fuel tank pit at depths of approximately
<br /> 16 feet below grade. Sample point locations are shown on the
<br /> attached Site Plan, Figure 3 . Also on December 13 , 1989, four
<br /> additional soil samples, labeled P1(6) , P2 (17) , P3 (5) , and P4 (8) ,
<br /> were collected from the product pipe trenches beneath sample point
<br /> locations P1, P2 , P3 , and P4 , respectively. These sample depths
<br /> ranged from 5 to 17 feet below grade. The sample point locations
<br /> are as shown on the attached Site Plan, Figure 4 . After sampling,
<br /> the product pipe trenches were excavated to the sample depths.
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