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FINAL REMEDIATION PLAN <br /> Sheri 4011 Company <br /> 620 west Chatter way,Stockton,California <br /> Delta Project No.40-88,586 <br /> Page 7 <br /> During the week of November 13, 1989, soil samples were collected from beneath the three former <br /> underground storage tanks and from along the former product distribution lines. Analytical results for soil <br /> samples collected during the tank and Pune excavations are summarized in Table 2 Soil sample locations <br /> are illustrated in Figure 3. <br /> Also during the week of November 13,1990,sora samples were collected from the base of the new tank vault. <br /> Analytical results for sora samples collected in the new tank vault are summarized in Table 3,and sample <br /> locations are indicated in Figure 3. Additional soil samples were collected in the areas of the former waste <br /> oil tank,sump,and service bay hoists. Analytical results are summarized in Table 4 and soil'Isampie locations <br /> are illustrated in Figure 3. <br /> TABLE 2 <br /> l:ormer Tank)ovation Sari Samples <br /> Coneentratiaas in milligrams per kilogram(equivalent to parts per million) <br /> Sample Depth(feet Ethyl- <br /> below orade) Seraene Tolvette benzene Xylenes SPH° <br /> N.End 14 66 170 74 320 3,200 <br /> Tank 1 <br /> S.End 14 0.22 0.074 <0.05 0.098 1.4 <br /> Tank 1 <br /> N.End 14 0.053 0.071 0.042 0.53 4.2 <br /> Tank 2 <br /> S.End 14 <0.05 0.068 <0.05 0.087 IA <br /> Tank 2 <br /> N.End 14 97 200 100 550 6,100 <br /> Tank 4 <br /> S.End 14 29 120 48 230 3,700 <br /> Tank 4 <br /> NE Cotner 19.5 110 290 100 500 7,1 <br /> Ob Etcay. <br /> 3 <0.05 450.05 <0.05 0.12 <0.5 <br /> Line#1 <br /> 3 <0.05 0.087 0.098 3.1 12 <br /> Linc#2 <br /> 3 <0.05 0.058 0.27 - 6.3 64 <br /> Line#3 <br /> I <br /> "Total petroleum hydrocarbons as gasoline. <br /> £ d HodA Wd60=£ L66L-01-01 <br />