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. LIVE OAK GEO ENVIRONMENTAL, INC . <br /> 4 <br /> 407 W. Oak St . , Lodi , CA 95240 •:• (209) 369-0375 :• logelodi . com <br /> June 30 , 2021 <br /> Project Number : 2138 <br /> Valentin Rosas <br /> 2661 Renton Way <br /> Castro Valley , CA 94546 <br /> Regarding : Percolation Testing <br /> APN 250- 150-28 <br /> 24184 S. Cabe Rd . , Tracy, CA (6 . 69 Acres) <br /> Mr . Rosas : <br /> Per your request , Live Oak GeoEnvironmental , Inc . ( Live Oak) has completed a percolation test <br /> for the subject Site , located at 24184 South Cabe Road , Tracy ( Plate 1 ) . We understand that <br /> you are planning to place two new modular homes on the Site , and the San Joaquin County <br /> Environmental Health Department is requiring the completion of a percolation test before the <br /> septic permits can be issued . <br /> Soil_Borings <br /> On June 28 , 2021 , Live Oak excavated a shallow soil boring on the Site for the purpose of <br /> percolation testing . The boring was four inches in diameter , 2 . 30 feet deep , and was <br /> excavated by hand auger . The location of the boring is indicated on the attached Plate 2 . <br /> Soil_ Log <br /> The soil in the boring , was observed to be silty clay to the full depth of the hole . <br /> Preparation and_ Presaturation _of_ Percolation Test Holes <br /> After the boring was advanced , the test hole was completed for the percolation testing . <br /> Approximately two inches of pea gravel were placed in the bottom of the open soil boring , <br /> followed by a 2 . 0 - inch diameter PVC pipe with perforations on the bottom . Pea gravel was <br /> then used to backfill a few inches of the annular space . <br /> Live Oak presaturated the percolation test hole approximately 24 hours prior to the percolation <br /> testing . The hole was filled with water to a height of 12 inches above the bottom of the boring <br /> for the presaturation . On the day of testing , the hole was found to be intact and dry . <br /> Percolation Test Procedure <br /> Live Oak conducted the percolation test for the boring on June 29 , 2021 . Percolation test <br /> procedures conformed to San Joaquin County Environmental Health Department policy . <br /> Environmental Engineering Geology Geophysics <br />