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Soil Suitability / Nitrate Loading Study r ierracon <br /> FLAG CITY TRUCK AND EQUIPMENT PARKING FACILITY I Lodi, California <br /> October 6, 2023 1 Terracon Project No. NA237081 <br /> Acampo Sandy Loam <br /> Acampo sandy loam soils are located across the eastern portion of the site and consist of <br /> 0 to 2 percent slopes. Parent material is alluvium derived from granite. Typical soil <br /> profiles consist of 0 to 47 inches sandy loam and 47 to 60 inches cemented soils. <br /> Drainage class is considered moderately well drained with low runoff and very low <br /> permeability. The USDA Soil Survey of San Joaquin County indicated the main limitation <br /> is depth to hardpan. Water maybe perched above the hardpan. For sites with septic <br /> systems, permeability can be improved by ripping the hardpan layer which improves the <br /> suitability of the soil for septic absorption fields. <br /> Devries Sandy loam <br /> Devries sandy loam drained soils are located across most of the site. Parent material <br /> consists of coarse loamy alluvium derived from igneous, metamorphic and sedimentary <br /> rock. Typical soil profiles consist of 0 to 27 inches sandy loam, 27 to 47 inches <br /> cemented sandy loam, and 47 to 62 inches sandy loam. The soils are somewhat poorly <br /> drained with very low runoff and very low to moderately low permeability. Water may be <br /> perched above the hardpan. For sites with septic systems, permeability can be improved <br /> by ripping the hardpan layer which improves the suitability of the soil for septic <br /> absorption fields. <br /> 1.5.1. Soil Boring Locations <br /> Based on a review of the site plan, the proposed Septic System will be located on the <br /> north side of the lot (Exhibit 2). Three percolation test borings B1, B2, and B3 were <br /> advanced in the vicinity of the proposed septic tank. <br /> Facilities I Environmental I Geotechnical I Materials 9 <br />