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Effectiveness and time to implement appear to be the most important <br /> technical criteria. Both Alternatives 7 and 8 are recommended as the most <br /> technical feasible alternatives for achieving the remedial action objectives. <br /> 7.2 KnVironmental and E!ublicRealth <br /> An assessment of the potential environmental and public health impact <br /> posed by existing site conditions was described in Section 4. This assessment <br /> represents the potential impact if Alternative 1 (No Action) is implemented. <br /> The impact of implementing the other five alternatives was then evaluated <br /> against those for the no-action alternative. <br /> A summary of the environmental and public health evaluation is presented <br /> in Table 7-2. The diesel fuel contamination present in the maintenance shop <br /> area is limited to the unsaturated zone. The movement of the diesel fuel by <br /> infiltration of surface water or a rise in groundwater is considered to be the <br /> most significant process for migration. Based on the results of the very <br /> conservative leaching and groundwater transport analysis, the potential for <br /> any significant groundwater contamination due to the presence of the diesel <br /> fuel is low (see Section 4). Therefore, the potential for adverse <br /> environmental or public health impact is low even if Alternative 1 is <br /> implemented. However, by achieving a cleanup level of 10,000 ppm in soils <br /> which effectively removes approximately SO percent of the diesel (Alternatives <br /> 7 or 8), the potential for adverse environmental or public health impact is <br /> further seduced. <br /> 7.3 Xnstitutional legUiXements <br /> Each remedial action alternative is evaluated against the requirements of <br /> federal, state, and local authorities. The lead agency for site mitigation <br /> will be the San Joaquin Department of Health. In addition, the California <br /> Regional Water Quality Control Board (RWQCB), as well as the California <br /> Department of Health Services (DOHS) may be involved in the review of this <br /> document. A summary of the institutional evaluation is presented in Table 7-3. <br /> 7-3 <br /> GGA/0198b <br />