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k" KLEI N FELDER <br /> File No. 20-2662-06ND <br /> February 28, 1990 i <br /> i <br /> t .� <br /> Dillon Engineering NAR s <br /> 1820 West Kettleman Lane Suite E �f���kUlVt� �• <br /> Lodi, California 95242 PERM/T/SE��'� <br /> RVIC S <br /> Attention: Mr. Joe Murphy <br /> Subject: PERCOLATION TESTS <br /> PROPOSED ALPINE ESTATES SUBDIVISION <br /> EAST OF STOCKTON <br /> SAN JOAQUIN COUNTY, CALIFORNIA <br /> Gentlemen: <br /> Presented in this letter are the results of percolation testing <br /> performed for the proposed Alpine Estates subdivision located east <br /> of and adjacent to Alpine Road at Oxford Road east of Stockton in <br /> San Joaquin County, California. Reference is made to our previous <br /> percolation test report dated January 24, 1990 and our geotechnical <br /> investigation report dated August 23, 1989 . <br /> I <br /> One approximate 3 foot deep percolation test was performed on eachi <br /> of the 7 proposed lots for our January 24, 1990 report. Two of the <br /> lots produced passing tests according to San Joaquin County <br /> requirements . This letter presents the results of deeper ) <br /> percolation tests performed on each of the 5 lots where failing (' <br /> tests occurred. <br /> The percolation test holes were drilled and set up on February 15, ' <br /> 1990 using a truck-mounted drill rig equipped with continuous- <br /> flight auger. The test holes had a diameter of approximately 6 <br /> inches and extended to depths varying from approximately 8 to 10 <br /> feet below existing ground surface. The test holes were cased with <br /> 1 s <br /> I <br /> KLEINFELDER 2825 East Myrtle Street, Stockton, CA 95205 (209) 948-1345 <br />