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SRIKANTH DASAPPA <br /> PAGE 2 <br /> The final Remedial Action Plan for this site must present the nature and extent of the <br /> soil and groundwater plumes at the site and the impact of these plumes on the <br /> groundwater system. The RAP should also discuss the beneficial uses designated for <br /> the groundwater system and the predicted impact of this release on these uses, <br /> currently and in the future. Also, any potential impact to the surface water body must <br /> be assessed. Two remedial alternatives should be evaluated in the RAP, one of which <br /> can be passive natural attenuation. The two alternatives chosen for evaluation at this <br /> site must be discussed in detail and any conclusions as to the effectiveness of the <br /> alternatives must be based primarily on physical data from the site. The costs of each <br /> alternative must also be provided in some detail so that an accurate and informed <br /> decision can be made. The two alternatives must be evaluated for overall effectiveness <br /> and cost and the most cost effective approach at the site should be implemented. <br /> Please submit a Remedial Action Plan that conforms to the above noted criteria. <br /> If you have any questions or wish to discuss this letter in more detail, please contact <br /> Linda Turkatte, Senior REHS, at (209) 468-3441. <br /> Donna Heran, REHS, Director <br /> Environmental Health Division <br /> Linda Turkatte, Senior REHS Marga r t Lagorio, R HS <br /> Site Mitigation Unit " Lead Senior <br /> c: CVRWQCB, Beth Thayer i <br /> c: SWRCB Cleanup Fund, George Lockwood <br /> c: Kristmont West <br /> C'. Park Environmental, Vern Bennet <br />