Laserfiche WebLink
Subsurface Investigation 315 Enterprise Place <br /> January 13, 2000 Tracy, California <br /> 4.2 Excavation <br /> The contaminated soil can be excavated and disposed of or treated onsite to <br /> acceptable levels. This is a viable remedial option. However, if the subject property is <br /> remediated and the adjoining is not, there is a significant risk that contaminants will migrate <br /> back onto the subject property, unless an intervening slurry wall is constructed to separate the <br /> two sites. <br /> Costs for this are tentatively estimated at $100,000 to $1.25,000, and would be <br /> doubled if the adjoining property is remediated at the same time. A slurry wall would cost <br /> approximately $20,000. <br /> 4.3 .In Situ Remedial Action <br /> The contaminated soil can be treated onsite by injecting appropriate nutrient to <br /> r <br /> enhance natural degradation of the hydrocarbons. This is a viable remedial option. Similar <br /> to excavation, if the subject property is remediated and the`adjoining is not, contaminants <br /> will migrate back onto the subject property, unless an intervening slurry wall is constructed <br /> to separate the two sites. This risk is reduced by the nature of the remedial action, which <br /> would actually tend to mitigate diesel concentration on both sides of the fence. <br /> Costs for this are tentatively estimated at $50,000 to $75,000, and would be doubled <br /> if the adjoining property is remediated at the same time. <br /> 9015-025 -5- <br />