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r <br /> GEOTECHNICAL <br /> r NEIL O. ANDERSON ENVIRONMENTAL <br /> A N D A S S O C I A T E S INSPECTIONS & TESTING <br /> LABORATORY SERVICES <br /> r <br /> POOL ENGINEERING <br /> POST TENSION DESIGN <br /> r <br /> August 1, 2005 <br /> NCIA Project Number:E05067A <br /> Herb Scott <br /> r 1040 Kettleman Lane Ste. 218 <br /> Lodi, CA 95240 <br /> r <br /> Subject: Percolation Test for Septic System Disposal Field <br /> APN 063-250-02, 76 Acre Parcel <br /> 12400 East Kettleman Lane <br /> Lodi, California <br /> 95240 <br /> Dear Mr. Scott, <br /> Per your request, our office has completed one (1) deep percolation test on the subject property <br /> which is located at 12400 East Kettleman Lane, Lodi, California. The property size is 76 acres in <br /> _ size and is presently agricultural land. Mr. Scott requested that our office conduct a percolation <br /> test to satisfy a requirement of the Environmental Health Department for siting a new residential <br /> septic system. <br /> The percolation test hole was located 150 feet east of the western property boundary and 1,438 <br /> feet from the northern property line. This location was determined by you to be near the site of <br /> �. the proposed septic system leach field. <br /> The drilling of a twenty-five (25) foot deep percolation test boring was conducted on Friday July <br /> 29, 2005 using a truck-mounted deep rock drilling rig with a 4-inch diameter auger. The soils <br /> were found to be brown silty clay from the surface to a depth of four feet followed by a brown <br /> cemented sandy silt with clay to a depth of twenty-five feet. No ground water was encountered in <br /> the hole. <br /> Within the boring, an inch of"pea gravel" was placed in the bottom of the hole to stabilize the <br /> side wall from caving and prevent erosion while filling the boring. A 2-inch diameter PVC pipe <br /> with open ends and slots was placed in the hole. About 6-inches of pea gravel was placed in the <br /> annular space around the pipe. The hole was pre-soaked 24 hours prior to the test with 12 inches <br /> of water above the bottom of the hole. <br /> During the percolation test, the fall of 6 inches of water was measured above the top of gravel <br /> LODI ■ SACRAMENTO ■ MODESTO <br /> �" ENVIRONMENTAL DIVISION 902 Industrial Way,Ia di,California 95240 0 209.367.3701 0 209.369.4228 fax 0 w .noanderson.com <br />