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k" KLE1 N FELDER <br /> File No. 20-1146-91 <br /> ff <br /> December 2 , 1991En <br /> ' <br /> __E1 <br /> DEC 4 "~"1 <br /> ENVIRONME SERV C�SL1'H <br /> PERM <br /> Hershall Travis <br /> 11266 North Micke Grove Road <br /> Lodi, CA 95240 <br /> Subject: PERCOLATION TEST RESULTS <br /> 11266 NORTH MICRE GROVE ROAD <br /> SAN JOAQUIN COUNTY, CALIFORNIA <br /> MS-92-39 <br /> Dear Mr. Travis: <br /> In this letter are presented the results of percolation tests <br /> performed for the subject project. Reference is made to our <br /> previous report dated September 27, 1991, which included <br /> percolation tests performed on the west side of the property. <br /> As requested, on September 24 , 1991, representatives of our firm <br /> drilled one approximate 9-1/2-foot deep and one approximate 15-foot <br /> deep percolation test hole at the approximate location indicated on <br /> Plate I. The test holes were drilled with a truck-mounted drill <br /> rig equipped with 6-inch diameter continuous-flight augers. The <br /> test holes were cased with slotted PVC pipe, covered with plywood <br /> and bags of soil, and left for later percolation testing. <br /> A representative of our firm returned to the site on November 26, <br /> 1991, filled the test holes with approximately 3 to 5 feet of <br /> relatively clean water, and left them to soak overnight. On <br /> November 27 , 1991, our representative returned to the site to <br /> perform the percolation tests. Following the published guidelines, <br /> the tests were performed for a period of 30 minutes. The <br /> percolation rates obtained were approximately 2 minutes per inch at <br /> the 9-1/2-foot depth and 6 minutes per inch at the 15-foot depth. <br /> The County approved percolation test field sheet is included with <br /> this letter. <br /> ri ht 991 KIeinfetder Inc. Page 1 of 2 <br /> KLEIrS??�DEh 825 East Myrtle Street, Stockton, CA 95205 (209) 948-1345 <br />