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AJ <br /> j soils. However, <br /> since 1 he TpH concentrations exceed the County's <br /> recommended level of 1p0 mg/Kg, it is recommended that an 4 ' x 4 ' <br /> x 31 area be excavated centering around soil sample locatior. Hg, <br /> This soil is to be excavated in compliance with the Tri Regional <br /> Guidelines of the "scoop and rune <br /> recommended due to the other pit sample ana yticalhis resuMethod is <br /> lts which <br /> f seem to indicate a lack of an area wide problem. <br /> i � <br /> once excavated, the excavation bottom will be resampled utilizing <br /> two native soil samples. These samples will be analyzed for TPH, <br /> BTX&E and Total Lead. Additionally, the excavated soils a <br /> mately 1.8 Cu. ds. Q <br /> Y ) , which will be stockpiled on-site,{ w�1(approxi-' <br /> `2q/ <br /> sampled via a composite sample for purposes of disposal or on-site <br /> aeration. <br /> Upon receipt of the analytical results, the stockpiled soils w' <br /> be treated in zn a ill <br /> appropriate fashion and the need for a soil <br /> contamination study at the site will be evaluated. should further <br /> soil remediation be recguired, a soil contamination work plan as <br /> well as a soil remediation proposal will be <br /> (! <br /> p- P prepared. <br /> E ' The stockpiled soils ad' <br /> concentrations of adjacent to the two <br /> pits contain limited <br /> petroleum hydrocarbon compcunds, It is recom- <br /> . . mended that a land spreading/aeration permit for these stockpiles <br /> I , be obtained from the County Air Pollution Control District and the <br /> soils be aerated in compliance with the San JoaquinH <br /> U. <br /> Health. Services: reccmmerdations, County Public <br /> majority of the Aeration will remove the <br /> soils• To ensure petroleum hydrocarbon compounds remaining in the <br /> At the end of proper aeration, 50 to 90 days should be allowed. <br /> F... this time, these soils, mixed with a <br /> 15% organic matter, may be utilized to refillpthe pi telt' loo- <br /> -H fractions remaining after aeration will eventually be degradedbynatural occurring microbes. <br /> A. i. <br /> _�f - <br /> y`s • <br />