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GEO-PHASE <br /> ENVIRONMENTAL <br /> February 5, 2007 <br /> Mr. Eric Wallberg <br /> California Department of Toxic Substance Control <br /> 8800 Cal Center Drive <br /> Sacramento, CA 95826 <br /> RE: 2ND ADDENDUM TO WORK PLAN—PRELIMINARY ENDANGERMENT ASSESSMENT <br /> Former Haley Flying Service,21,000 Paradise Road,Tracy(Envirostor/Cal-Site#39070037) <br /> Mr. Eric Walberg: <br /> The attached Work Plan addendum is submitted on behalf of Mrs. Dorothy Haley, the owner of <br /> the subject site, formerly operated as a crop-dusting service; Mr. John F. Lynch, (optionee) who <br /> maintains a contract with the owner that includes a multiyear lease and option to purchase the <br /> subject property and Wright Environmental Services, Inc. as owners contractor for subsequent <br /> corrective action implementation and the company who Geo-Phase Environmental Inc. has been <br /> contracted to prepare and implement this work plan. The site is listed on the DTSC `Envirostor" <br /> database (formerly Cal-Site), and was the subject of a recent Preliminary Endangerment <br /> Assessment (PEA) completed by Geo-Phase Environmental, Inc. on January 18, 2006. The <br /> purpose of this addendum is to describe the methods and protocols to be used in the collection <br /> and testing of additional soil and groundwater samples in the vicinity of the pesticide release <br /> identified in the PEA. <br /> Sincerely, <br /> Geo-Phase Environmental Inc. <br /> Stephen M. Lankford, PG, REA <br /> President <br /> cc: Dorothy Haley <br /> San Joaquin County EHD <br /> John Lynch <br /> 2937 Veneman Avenue, Suite B240 Geo-Phase Environmental Inc. Phone: (209)569-0293 <br /> Modesto, Ca 95356 Fax: (209)569-0295 <br />