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3 . The dimensions of the excavated pit were approximately 12 feet <br /> by 12 feet by 10 feet deep. Approximately 35 yards of soil were <br /> excavated. <br /> L <br /> Four in-situ soil samples were taken by FGL Labs following <br /> excavation to determine further extent of contamination. Figure 4 <br /> shows the four sample locations. Test results dated December 12 , <br /> 1990 showed no further contamination (Exhibit #3) . All four sample <br /> values were recorded at non-detectable limits. Upon receipt of <br /> these results, Mr. Knoll approved Public Works to fill in the <br /> excavated pit with clean soil. <br /> The excavated material was then spread to a thickness of <br /> �. approximately 8" on an impervious plastic layer located near the <br /> tank removal site (Figure 5) . The soil was turned periodically for <br /> approximately three weeks before being tested. The soil was then <br /> ` sampled on January 11, 1991 by FGL Labs. Two composite samples were <br /> taken. Test results dated January 22, 1991 showed a diesel #2 <br /> concentration of 6. 1 mg/kg in one sample, and 1. 8 mg/kg in the <br /> second sample (Exhibit #4) . <br /> V <br /> The Department of Public Health Services mandated that the soil be <br /> removed and disposed of at a properly permitted site. The <br /> Department of Public Works subsequently submitted an application <br /> for disposal (Exhibit #5) of the diesel contaminated soil at <br /> Forward Inc. , a properly permitted disposal site. Forward required <br /> a more comprehensive test of the contaminated soil before it could <br /> be accepted at its disposal site. <br /> Sampling for the test required by Forward was conducted by FGL <br /> �. Labs on February 28 , 1991. Two composite samples were taken. Test <br /> results dated March 11 and March 19, 1991 (Exhibit #6) showed that <br /> both samples taken exhibited non-detectable levels for all tested <br /> L contaminants including diesel #2 . <br /> It should be noted that all remedial operations including <br /> excavation and sampling were attended by a representative from the <br /> Environmental Health Division of the San Joaquin County Department <br /> of Public Health Services. It should also be noted that the <br /> sampling technique as well as all sample locations were approved <br /> i. by the Department of Public Health Services representative. <br /> Recommendation <br /> The Department of Public Works has requested that the Department <br /> of Public Health Services allow Public Works to use the soil for <br /> road maintenance at its Harney Lane Landfill. <br /> L <br /> y <br />