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KAM��� & <br /> i <br /> The analytical results for samples from Pit B indicate limited <br /> amounts of petroleum hydrocarbon compounds are present in the <br /> soils. However, per the LUFT manual guidelines, the concentrations <br /> remaining are sufficiently low as to not present further concern <br /> given the site specific characteristics. Therefore, it is <br /> Z:a recommended that this area also be closed. <br /> The stockpiled soils adjacent to the two pits contain limited <br /> concentrations of petroleum hydrocarbon compounds. It is recom- <br /> mended that a land spreading/aeration permit for these stockpiles <br /> be obtained from the County Air Pollution Control District and the <br /> soils be aerated in compliance with the San Joaquin county Public <br /> =� Health.. Services' recommendations. Aeration will remove the <br /> majority of the petroleum hydrocarbon compounds remaining in the <br /> soils. To ensure proper aeration, 60 to 90 days should be allowed. <br /> rr At the end of this time, these soils, mixed with approximately 10%-- <br /> 15% organic matter, may be utilized to refill the pits. TPH <br /> s fractions remaining after aeration will eventually be degraded by <br /> natural occurring microbes. <br /> pat <br /> L� <br /> ka <br /> r <br /> - 5 - <br />