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6ETTLER - RYAN INC. <br /> 3= 24 <br /> October 17, 2000 <br /> Mr. Michael J Infurna Jr. <br /> San Joaquin County Public Health Services <br /> Environmental Health Division <br /> 304 East Weber Avenue, Third Floor <br /> Stockton, California 95202 <br /> Subject; Proposed Groundwater Purging and Disposal at Tosco (Former BP Oil) Service <br /> Station No. 11192, 1403 Country Club Boulevard, Stockton, California. <br /> Mr. Infurna: <br /> At the request of Tosco Marketing Company (Tosco), Gettler-Ryan Inc. (GR) has prepared this <br /> letter in response to the San Joaquin County Public Health Services, Environmental Health <br /> Division (PHS-EHD) letter dated October 3, 2000. GR does not propose the groundwater <br /> purging outlined in our work plan dated September 6, 2000, as a final remedial action. This work <br /> is proposed as an interim remedial action as described in the SWRCB Guidelines for <br /> Investigation and Cleanup ofA4TBL, for sites with persistent high concentrations of MTBE. In <br /> addition, this method can be evaluated as a potentially effective remedial action during a six <br /> month trial period. The data collected during this trial period would support the development of a <br /> feasibility study of potential remediation options, while at the same time reducing the mass of <br /> MTBE in the groundwater beneath the site. <br /> GR therefore requests your approval of the proposed groundwater purging for a six month trial <br /> period, after which the data collected will be submitted to the PHS-EHD. Groundwater purging <br /> can commence immediately upon your approval. <br /> Should you require further information about the scheduled work, please do not hesitate to call <br /> me at (925) 551-7555. <br /> Sincerely, <br /> Gettler-Ryan Inc. a <br /> RED GEO <br /> 1.AS � ��C <br /> Staff Geologist <br /> W. Skip McIntosh O�JG <br /> No. 6882 <br /> Dou as . Lee <br /> Project Manager '9TFOF <br /> R.G.No. 6882 <br /> cc: Mr. David Camille, Tosco Marketing Company <br /> 6747 Sierra Court , Suite J Dublin , California 94568 ( 925 ) 551 - 7555 <br />