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CLEARWATER <br /> G P C, U P <br /> - Environmental Services <br /> March 26, 2010 <br /> Ms. Lori Duncan <br /> Senior Registered Environmental Health Specialist <br /> San Joaquin County Public Health Services (SJCPHS) <br /> Environmental Health Division <br /> 600 East Main Street <br /> Stockton, CA 95202 <br /> Re: Request to Add Soil Borings to Support Bench Scale Testing for Proposed In-Situ <br /> Chemical Oxidation <br /> Barnes Trucking Facility, 1817 South Fresno Avenue, Stockton, California <br /> Clearwater Project Number ZB 178A <br /> San Joaquin County Site Code Number 2506 <br /> Dear Ms. Duncan: <br /> On March 26, 2010 we met at your office to discuss the "Updated Corrective Action Plan for In- <br /> Situ Chemical Injection" submitted on March 5, 2010 and the general path to take towards case <br /> closure for this site. At the conclusion of this meeting, we determined that it would be necessary <br /> to obtain soil data from the affected area to further define the extent of sorbed impacts and obtain <br /> bench test soil material. Generally, this area needing further definition was determined to be in- <br /> between AS- 1 and MW-5B. This area is also thought to be the most affected area with the <br /> greatest impacts present. The soil materials from these borings would be used as material for the <br /> bench tests. <br /> Please find attached Figure t , which designates the locations of these borings. ClearwCater group <br /> vfor !ld like to drill to obtain bench test soil :rud groundwater for future remediation elforts et the <br /> Site. <br /> 229 Tewksbury Avenue ♦ Point Richmond, California 94801 ♦ Telephone: 510-307-9943 ♦ Fax: 510-232-2823 <br />