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„. ..,. LIVE OAK GEO ENVIRONMENTAL, INC. <br /> g " •`� 407 W. Oak St., Lodi, CA 95240 •3 (209) 369-0375 :• logelodi.com <br /> .rte” <br /> May 17, 2022 <br /> Project Number: 2228 <br /> Saul Hernandez <br /> 10651 E. Ada Ave. <br /> Stockton, CA 95215 <br /> Regarding: Percolation Test <br /> APN 089-190-19 <br /> 12123 E. St. Rt. 26, Stockton, CA (21.12 Acres) <br /> Mr. Hernandez: <br /> Per your request, Live Oak GeoEnviron mental, Inc. (Live Oak) has completed a percolation test <br /> for the subject Site, located at 12123 East State Route 26, Stockton, California (Plate 1). We <br /> understand that you are constructing a house on the Site, and the San Joaquin County <br /> Environmental Health Department is requiring the completion of a percolation test before <br /> septic permits can be issued. <br /> Soil Boring <br /> On May 10, 2022, Live Oak excavated a shallow soil boring on the Site for the purpose of <br /> percolation testing. The boring was four inches in diameter, 2.44 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 a depth of 1.0 foot, followed by silt with <br /> sand to a depth of 2.0 feet, followed by sandy silt to the full depth of the hole. <br /> Preparation and Presaturation of Percolation Test Hole <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 May 11, 2022. Percolation test <br /> procedures conformed to San Joaquin County Environmental Health Department policy. <br /> Environmental Engineering Geology Geophysics <br />