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This alternative would consist of excavating Pram the soil via The <br /> cte <br /> removing the volatile by <br /> excavated soils would be spread over a treatment area at a depth of 6 <br /> to 8 inches. Agriculturalequipment <br /> nvolatilize. en be used to mix After the aerationhs <br /> ssoils allowing the hydrocarbons <br /> complete, the treated soils would be backfilled into the excavation. <br /> This treatment alternative is an effective and proven method of <br /> treating hydrocarbon-containing soils. The technology is also easily <br /> implemented because it only requires conventional construction <br /> equipment. In addition, the area of the site can easily accommodate <br /> st of <br /> the treatmentsolidatedoclays (known to be below cthe water table atted site soils 1515 <br /> semi-can 1515 <br /> West Weber). Aeration of wet clays is difficult and labor intensive. <br /> The treatment may also be time consuming. Instead of severalbefore <br /> several weeks or months may be required to dry the clay <br /> aeration could proceed. Due to these constraints, aeration would be <br /> considered appropriate only if other alternatives are not effective at <br /> treating the soil at the site. <br /> d involve excavation and transTe <br /> Tof the <br /> his alternative woul <br /> ortation <br /> xcavated area <br /> 4 affected soils to an off-site treatment facility. <br /> would then be backfilled with imported fill. The soils would be <br /> treated to remove the hydrocarbon constituents and either allow <br /> reuse or disposal of the clean soil. Examples of off-site soil tr aam w <br /> include recycling of the hydrocarbon-containing <br /> material in the production of road base material or low temperature <br /> thermal desorption. <br /> This alternative would effectively remediatethe <br /> etsoils a rtheion cos d <br /> could be easily implemented. However, the <br /> associated with this alternative make it less cost-effective than <br /> equally effective available on-site treatment alternatives. Therefore, <br /> off-site treatment alternatives are not presently considered as options <br /> for the site. <br /> soils and <br /> __ ---_... ltern_.... <br /> This aative involves-the-excav roiol The excavated <br /> subsequent off-site disposal in an appropriate landfil <br /> area would be backfilled with clean material. <br /> Although this alternative would be effective and could be <br /> implemented in a timely fashion, it is not cost-effective. Landfilling <br /> 6-3 <br />