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t ; <br /> Sanchez Prope rty/Michelotti's Auto page 2 <br /> 1876 Country Club Blvd., Stockton February 6, 2012 <br /> Either an air-hammer conductor casing of adequate size is to be driven to 28' bgs around <br /> the existing well or a sonic casing is to be advanced around the well to 28' bgs. These <br /> casings should be of adequate diameter to surround the existing construction materials of <br /> the well (hardened grout), capable of providing a separation from the surrounding pea- <br /> gravel, and provide access for drilling out the well contents. After the contents of the well <br /> are drilled out and removed, pea-gravel is to be introduced through the conductor casing <br /> as it is removed. This will prevent undermining the UST pit as discussed .in the Plan while <br /> also meeting the intention of. San Joaquin County Well Standards 'by removing a <br /> preferential pathway. Please check with your drilling contractor to ensure that MW-10 is <br /> destroyed by either of these methods. <br /> The Plan is adequate and necessary and approved with the above noted modifications <br /> [Health and Safety Code, 25296.10(c)(3)]. <br /> Thank you for your cooperation and understanding. If you have any questions, please <br /> contact Mr. Michael Infurna at (209) 468-3454. <br /> Michael J. Infurna Jr., RE S Nuel Henderson, PG <br /> Registered Environmental Health Specialist Engineering Geologist <br /> c: Mr. James L. Barton, CVRWQCB, 11020 Sun Center Dr. #200 Rancho Cordova, <br /> CA 95670-6114 <br /> Mr. Kirk Larson, SWRCB-CUF, PO Box 944212 Sacramento, CA 94244-2120 <br /> Mr. George Converse, Western Geo-Engineers, 1386 E. Beamer Street, <br /> Woodland, CA 95776 <br />