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Soil Suitability I Nitrate Loading Study Irerracon <br /> Betschart Property Lodi, CA <br /> July 19, 2019 Terracon Project No. NA197044 <br /> 1.4.5 Groundwater Sample Handling <br /> Refer to Section 1.4.3. <br /> 1.5 Soil Profile and Geologic Information <br /> The site is depicted on the Geologic Map of California 2010, as within generalized quaternary <br /> Pleistocene and Holocene deposits which are comprised primarily of unconsolidated and semi- <br /> consolidated alluvium, lake, playa, and terrace deposits. <br /> Terracon reviewed the United States Department of Agriculture (USDA) Natural Resources <br /> Conversation Service (NRCS) Web Soil Survey for information regarding soil properties. Based <br /> on information obtained from the USDA sources, the site consists of the following soil types. <br /> Table 3. <br /> USDA Soil Types. <br /> Map Symbol Name Percent of Site Location <br /> 189 Kingdon fine sandy loam 35% Located on the southern third portion of <br /> the site <br /> 256 Tokay fine sandy loam 65% Located on the northern two thirds <br /> portion of the site <br /> Kingdon fine sandy loam soils consist of very deep moderately well drained soils with 0 to 2 <br /> percent slopes. Parent material consists of alluvium derived from granitic rock sources. Typical <br /> soil profiles consist of 0 to 61 inches fine sandy loam. According to the USDA Soil Survey of San <br /> Joaquin County (1992), Kingdon fine sandy loam soils are very deep with moderate permeability. <br /> The rate of water intake in irrigated areas is 1.5 inches per hour. There are few limitations for <br /> homesite developments. <br /> Tokay fine sandy loam soils consist of well drained soils with 0 to 2 percent slopes. Parent <br /> material consists of alluvium derived from granitic rock sources. Typical soil profiles consist of 0 <br /> to 45 inches fine sandy loam and 45 to 60 inches sandy loam. According to the USDA Soil Survey <br /> of San Joaquin County, the soils are very deep and well drained. Permeability is moderately <br /> rapid. The rate of water intake in irrigated areas is 1.5 inches per hour. <br /> Based on the USDA soil map, the proposed septic system may be developed within both soil <br /> types. <br /> 1.5.1 Soil Boring Locations <br /> Based on a review of the site plan, the proposed leachfield will be located northwest of the <br /> residence, therefore, the percolation test boring (B1) was placed near the anticipated leachfield. <br /> Soil profile boring (B2) was placed approximately 5 feet south of boring B1. <br /> Responsive w Resourceful ■ Reliable 8 <br />