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TL 489-0589--02 Page 13 <br /> detect petroleum product constituents in the on-site soils in the ` <br /> vicinity of the reported location of the underground storage tank <br /> g GJ <br /> at a depth of 15 feet BSG. . The static groundwater table -underlying <br /> the site is approximately 50 feet BSG. This is a vertical <br /> separation of approximately- 35 feet between the groundwater table <br /> and soil samples collected at: 15 feet BSG. The soil profile of .the <br /> on-site soils consists of firm to hard 'sandy silts .to a depth of 15 <br /> feet BSG, the maximum depth explored. Based on the analytical data <br /> and field data, it appears that there are no potential <br /> environmental effects to the underlying groundwater from this tank <br /> location. <br /> 6. 3 Additional Studies and/or Remedial. Actions: Based on the <br /> chemical analytical results- of soils in the vicinity of the former <br /> jr <br /> location of the underground storage tank it appears that no <br /> additional studies and/or remedial actions are required for the on- j <br /> site soils. The 'rinsate and- soil cuttings that -are contained in b <br /> the 55-gallon steel drums will not - require transportation and <br /> ,i <br /> disposal under Local, `State, and Federal hazardous waste <br /> regulations. Therefore, these materials can'.be disposed of at the <br /> discretion of the Riley/Pearlman Company. <br /> 7 .0 CONCLUSIONS <br /> On the basis of the field and laboratory findings, Twining <br /> presents the fallowing conclusions: <br /> o The soil profile at the site generally consists of firm <br /> to hard silty sands and coarse--grained, well-graded <br /> sands; <br /> _ t <br /> { Fresno Modesto Visalia Bakersfield <br /> r <br />