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Soil Suitability / Nitrate Loading Study Irerracon <br /> Jeremy Winery Lodi, CA <br /> May 7, 2019 Terracon Project No. NA197008 <br /> including nitrate. Dissolved nitrate was reported in the wells between approximately 4.3 and 19 <br /> mg/L below the EPA MCL of 45 mg/L for nitrate. Copies of the DWR records are included in <br /> Appendix D. <br /> Based on the historical information, the past agricultural land use and septic systems in the area <br /> should be considered potential groundwater contamination sources. <br /> 1.4.3 Water Sample Location <br /> There are no functioning groundwater wells on the site; therefore, a groundwater sample was not <br /> collected. <br /> 1.4.4 Groundwater Sample Analysis <br /> Not applicable. Refer to Section 1.4.3. <br /> 1.4.5 Groundwater Sample Handling <br /> Not applicable. 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 and USDA Soil Survey of San Joaquin County <br /> (1992) for information regarding soil properties. Based on information obtained from the USDA <br /> 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 /> 112 Bruella sandy loam 6.3 % Northeastern corner <br /> 189 Kingdom fine sandy 0.1% Northeastern corner <br /> loam <br /> 256 Tokay fine sandy loam 93.6% Across the site with the exception of <br /> the northeastern corner <br /> Based on the USDA soil map, the proposed septic system will be developed within Tokay fine <br /> sandy loam soils near the southern portion of the site. Tokay fine sandy loam soils consist of well <br /> drained fine sandy loam soils with 0 to 2 percent slopes. Parent material consist of alluvium <br /> derived from granitic rock sources. Typical soil profiles consist of 0 to 45 fine sandy loam and 45 <br /> Responsive ■ Resourceful ■ Reliable 8 <br />