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LIVE OAK GEO ENVIRONMENTAL, INC. <br />407 W. Oak St., Lodi, CA 95240 •:• (209) 369-0375 •:• logelodi.com <br />February 3, 2022 <br />Project Number: 2209 <br />Mark Lemieux <br />25203 Magnolia PI. <br />Acampo, CA 95220 <br />Regarding: Percolation Test <br />APN 005-400-05 <br />25203 N. Magnolia PI., Acampo, CA (2.00 Acres) <br />Mr. Lemieux: <br />Per your request, Live Oak GeoEnvironmental, Inc. (Live Oak) has completed a percolation test <br />for the subject Site, located at 25203 North Magnolia Place, Acampo (Plate 1). We understand <br />that you are constructing a house on the Site, and the San Joaquin County Environmental <br />Health Department is requiring the completion of a percolation test before septic permits can <br />be issued. <br />Soil Boring <br />On February 2, 2022, Live Oak observed the drilling of shallow and deep soil borings on the <br />Site for the purpose of percolation testing. The borings were 12 inches in diameter, 3.42 and <br />11.62 feet deep, and were excavated by Central Valley Septic of Lodi with a Spiradrill LHD 50. <br />The location of the borings is indicated on the attached Plate 2. <br />Soil Loa <br />The soil in the borings was observed to be clay to a depth of 3.5 feet, followed by clayey silt <br />with sand to approximately 7 feet, followed by silty fine sand to approximately 10 feet, followed <br />by fine to medium sand with silt to the full depth of the hole. <br />Preparation and Presaturation of Percolation Test Hole <br />After the borings were advanced, the test holes were completed for the percolation testing. <br />Approximately two inches of pea gravel were placed in the bottom of each 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 holes approximately 24 hours prior to the <br />percolation testing. Each hole was filled with water to a height of 12 inches above the bottom <br />of the boring for the presaturation. On the day of testing, the deep hole was found to be intact <br />and dry; standing water was present in the shallow hole. <br />Environmental Engineering Geology ❖ Geophysics <br />