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Based on conversations with the San Joaquin County Department of Health, <br /> it is Dames & Moore's understanding that a specified cleanup level for diesel <br /> in soils has not been set, and that cleanup requirements will be determined <br /> based on site-specific characteristics. <br /> As discussed in Section 4 (Environmental and Health Assessment), a <br /> remedial response criterion for total petroleum hydrocarbons in soil was <br /> proposed to be 10,000 ppm. if an alternative meets or exceeds this standard, <br /> no institutional controls are expected to be imposed. However, if the <br /> alternative fails to meet this standard, controls such as restricted site use <br /> may be implemented. Final candidate alternatives 3, 7 and 8 meet or exceed <br /> the proposed remedial response criterion, while implementation of alternatives <br /> 1, 5 and 9 may require institutional controls. <br /> 7.4 Cost Ana. ysis <br /> A summary of the estimated present worth costs for the six final candidate <br /> remedial action alternatives is presented in Table 7-4. A more detailed <br /> breakdown of the estimated costs for each alternative is presented in <br /> Appendix G. <br /> These costs are used to develop an order-of-magnitude ranking for <br /> comparison of the various alternatives, and are not intended for budget <br /> planning, bidding, or construction purposes. <br /> 7-4 <br /> GGA/0198b <br />