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l <br /> KLEINFELDER <br /> File No . 20-2662-06 <br /> January 24, 1990 <br /> Dillon Engineering <br /> 1820 West Kettleman Lane, Suite E <br /> Lodi, California 95242 <br /> Subject: SOIL BORING AND PERCOLATION TESTING <br /> PROPOSED ALPINE ESTATES SUBDIVISION <br /> SAN JOAQUIN COUNTY, CALIFORNIA <br /> Gentlemen: <br /> Presented in this report are the results of our soil boring an& <br /> percolation testing performed for the subject project. The' <br /> l <br /> proposed subdivision site is located east of Alpine Road between <br /> Fremont Street and Copperopolis Road, east of Stockton in San'' <br /> Joaquin County, California . Reference is made to ours <br /> geotechnical investigation report dated August 23, 1989 which was <br /> prepared for the subject subdivision. <br /> We understand that a retention basin will be constructed at the <br /> east corner of the site. Each of the seven lots will contain its <br /> own septic system. The purposes of our soil boring and <br /> percolation testing have been to explore and evaluate the surface <br /> and subsurface soil conditions and to provide recommendations for <br /> use in basin and septic system design. The scope of our services <br /> was outlined in our discussions and in our "Agreement for <br /> Services, " dated December 11, 1989 . <br /> The field explorations for this project consisted of drilling 1 <br /> soil boring, 3 deep percolation test holes and 7 shallow <br /> percolation test holes on January 12, 1990. The soil boring was <br /> extended to a depth of approximately 50 feet, and the 3 basin <br /> percolation test holes were extended to depths of approximately <br /> 30, 20, and 10 feet for tests 1, 2, and 3, respectively. One 3 <br /> KLEINFELDER 2825 East Myrtle Street, Stockton, CA 95205 (209) 948-1345 <br />