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10/05/98 MON 11 49 F41 925 363 7275 TERRA VAC NOR CkI. 0002 <br /> tRM9 <br /> VAC1651 Alvarado Street, Sari Leandro, CA 94577-2636 <br /> Tel (510) 351-8900 ❑ Fax (510) 351-0221 <br /> q I <br /> October 5, 1998 <br /> Mr Mark Gilmartin <br /> Gilmartin &. Le Berthon LLP <br /> 100 Wilshire Boulevard, Suite 132 <br /> Santa Monica, CA 90401-1114 i <br /> Subject CAP implementation <br /> Montgomery Ward Auto Center <br /> 5400 Pacific Avenue, Stockton <br /> PHS-EI-ID Site Code No 2163 <br /> Dear Mr Gilmartin <br /> Terra Vac is pleased to submit this cost estimate for implementing the Corrective Action <br /> Plan developed by Environmental Audit, Inc , for the Montgomery Ward Stockton site <br /> Based on the data provided and our experience at similar sites, we feel that the SVE <br /> portion of the project (including vapor abatement) will be required for less than one year, <br /> prodded no additional sources e%ist Hydrocarbon extraction rates will approach <br /> asymptotic at %khich time the system is no longer cost effective to operate and, assuming <br /> concurrence from the San Joaquin County EHD, one year of remaining operations would <br /> involve conversion of sparging to lower flow air injection for enhanced bioremediation <br /> Tusk I- Work PlanlPermitlrny/H&S $ 10,590 <br /> This task involves the creation of a health and safety plan, all aspects of permitting <br /> including «ell permits, an air permit, building and electrical permits The need for a <br /> Yiintnr discharge permit is not anticipated <br /> ua�+ <br /> Taste 2- Design & Plannrrrg $ 3,640 <br /> This task involves development and refinement of remedial system design presented in <br /> the CAI'. subcontractor bid specifications, and scheduling <br />