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Soil Suitability and Nitrate Loading Evaluation-Update-2 Page 9 of 18 <br /> Great Pacific Nut—Nut Processing Facility Expansion <br /> 3501 Lehman Road, Tracy, California <br /> September 6,2019 CTE Job#25-0710G <br /> the San Francisco-San Jose Quadrangle" (CDMG Map Sheet 5A, 1991) the site is <br /> indicated to be underlain by the Quaternary Alluvial Fan deposits. <br /> Soils within percolation test hole "P-1X" consisted of stiff medium plastic clay (CL) to <br /> the maximum depth of 36 inches begs. Soils encountered in test holes "P-2" and "P-3" <br /> consisted of silty sand(SM). In test hole"P-1" soils consisted of low plastic clay (CL) to <br /> 30-inches begs and fine sandy silt (ML) from 30 to 38-inches begs. Soils encountered <br /> within Boring B-GW included stiff low plastic clay (CL)to 4 feet begs, medium dense to <br /> dense silty sand (SM) between 4 and 20 feet begs and stiff clayey silt (ML) from 20 feet <br /> begs to the maximum explored depth of 25 feet begs. The soil material type presented on <br /> the percolation test data sheets represents the soil material type encountered within the <br /> percolation test holes. Percolation data sheets are contained in Appendix-B. <br /> All test holes were backfilled with cement grout and surface restored to original condition <br /> upon completion of testing. <br /> 7.0 PERCOLATION TESTING <br /> Our subsurface investigation included conducting leach field and French drain soil <br /> suitability evaluations via percolation testing. The evaluation included the drilling and <br /> testing of a total of four percolation test holes at the locations shown on Figure-2. P-IX, <br /> P-2 and P-3 were drilled on March 22, 2019 and tested on April 9, 2019 and P-1 was <br /> drilled on April 24, 2019 and tested on July 19, 2017. P-IX was conducted at a depth of <br /> 36-inches begs at the original proposed leach field location and P-1 was conducted at a <br /> depth of 38-inches begs at a new proposed leach field location. Percolation tests P-2 and <br /> P-3 were conducted in the vicinity of the proposed storm water French drain system at a <br /> depth of 10.0 feet begs. <br /> SACRAMENTO • FREMONT • MODESTO <br /> INSPECTION&TESTING•GEOTECHNICAL•ENVIRONMENTAL-CONSTRUCTION ENGINEERING <br />