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Soil Suitability / Nitrate Loading Study <br />Ehlers Property Lodi, California <br />May 13, 2021 Terracon Project No. NA217019 <br />1.5 Soil Profile and Geologic Information <br />Irerracon <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 and USDA Soil Survey of San Joaquin County <br />(1992) for information regarding soil properties. Based on information obtained from the USDA <br />sources, site soils consist of Guard clay loam which consists of well drained soils with 0 to 2 <br />percent slopes. Parent material consists of alluvium derived from mixed rock sources. Typical <br />soil profiles consist of 0 to 72 inches clay loam. <br />1.5.1 Soil Boring Locations <br />Two shallow borings (B1 and B3) and one soil profile (B3) were advanced near the northeastern <br />corner of the site. <br />1.5.2 Soil Boring Dimensions <br />The borings were advanced with a 4 -inch diameter hand auger to 3.0 feet, 6.0 feet, and 2.3 feet <br />bgs. <br />1.5.3 Soil Lithology Observed <br />The following soils were observed in the soil profile boring BI <br />Table 5. <br />Summary of Soil Lithology <br />Boring <br />Depth Interval (ft) <br />Soil Type <br />Unified Soil <br />Classification <br />0-1.0 <br />Fine grain sandy silt <br />ML <br />brown <br />1-1.5 <br />Fine grain silty sand, <br />SM <br />B3 <br />black with gravel <br />1.5-6.0 <br />Medium silty sand, black, <br />SM <br />orange, coarse <br />6.0 <br />Medium, black, silty sand <br />SM <br />Responsive Resourceful Reliable 9 <br />