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-Chemical Neutralization Chemical neutralization involves treating the ground water to neutralize the compounds present Neutralization is only used for ground water affected by acidic or alkaline conditions, rather than ' hydrocarbons This treatment alternative is not effective for hydrocarbons and therefore has been eliminated No Action In the no action alternative, no measures would be taken to contain or treat the hydrocarbon-containing ground water at the site No action would be taken to remediate the site This passive response would employ natural biodegradation as the only treatment This alternative could be easily implemented as no action is required It would also be the least expensive alternative However, this alternative may not effectively remediate ground water and would not satisfy the timeliness criterion Therefore, the no action alternative is not considered an appropriate alternative Selected Alternative The results of the engineering evaluation identified preferred alternatives for the remediation of both hydrocarbon-containing soils and ground water at the site For site sods, the preferred alternative is excavation and on-site aeration of hydrocarbon-containing sods This alternative is favored because it would be an effective and easily implemented remedial alternative for site soils In addition, on-site aeration would be very cost-effective and could be implemented in a timely manner For ground water, the preferred alternative entails the extraction of a fixed volume of hydrocarbon-containing ground water from both sites, aeration of the extracted water, and discharge to the sewer If necessary, ' the extracted ground water could first be polished with liquid-phase activated carbon prior to discharge to the sewer This alternative would be cost-effective and easily implemented at the site Section 5 provides a detailed description of the implementation plan, and Section 6 discusses the proposed schedule 4-9 1