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TRACY LAND TREATMENT FACILITY 2 17 May 1991 <br /> INSPECTION REPORT <br /> INSPECTION SUMMARY <br /> Sample results for storage cells with high levels of total petroleum hydrocarbons (TPH) <br /> indicated the presence TPH as diesel with toluene and xylene being detected in the <br /> soil . These cells should not be included with cells that are proposed for use as fill <br /> below road base. Sample results for the cells with low levels of TPH (as motor oil ) <br /> indicate that no volatile components were present in the soil . <br /> Based on the above results as well as previous sampling events, the use of soil with <br /> low level of TPHs as fill below road base probably will not impact or threaten to <br /> impact water quality. However, as stated in the HLA report, all personnel working in <br /> the storage site or the proposed fill site should wear the minimum recommended Personal <br /> protective equipment while working with the proposed fill material . Additionally, a <br /> portable Combustible Gas Indicator or similar detector should used to determine <br /> exposure to unhealthy doses of hydrocarbons. Another detector should be used to insure <br /> that no soils contain containing volatile components are taken off site to be used as <br /> road fill . <br /> Robert A. Evans, Area Engineer <br /> RAE <br />