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meat and disposal at their facility east of Manteca. - On June 21 , ' <br /> 1953, all of the contaminated spoil, (a total ofapproximately <br /> 180 CY' s, ) was transported to the Forward site; copies of the' <br /> waste manifests are attached 'as EXHIBIT G. <br /> The excavation was filled with clean material stored� :on' the' property, and compacted. A licensed engineering- firm' performed <br /> field density tests after backfilling to verify that the material <br /> was properly compacted. The "'results of that work is included as <br /> ` EXHIBIT H. , <br /> COLLUSIONS <br /> 1. Laboratory tests of soil samples from the, site of the removed <br /> diesel UST revealed that BTEX was- not present at `detecton J <br /> limits <br /> 2. TPH as diesel was present in only one sample; at 10. 5 mg/kg, <br /> which is far below the limit .of 100 mg/kg allowed to be' left in <br /> place using the Leaching Potential Analysis. for Diesel worksheet <br /> from the LUFT Manual. <br /> k <br /> 3. All contaminated spoil has been removed from�: the property; <br /> and the excavation has been filled with clean soil and "properly ; <br /> compacted. <br /> 4. No further investigative work or spoil removal is required at <br /> this location. <br /> RECOMMENDATION: <br /> The results of the work performed as described above show that <br /> all significant contamination has been removed from the' ' site <br /> which was occupied by the diesel UST, and the contaminated spoil <br /> has been transported to:.a licensed disposal facility for treat- <br /> ment or storage. <br /> Therefore, it is believed that further work at this location is <br /> not necessry, and site closure should be approved by the County <br /> EHD, And a propriate supporting documents issued. <br /> WM. J. H NTER & ASSOCIATES <br /> Ju y 20, 1993 �4 Gfp� % <br /> mac, <br /> V"�LtV�l.Ku4�4ER � <br /> No,660 <br /> OFC <br /> 5PL\ : <br /> I <br />