Laserfiche WebLink
and certain others can also develop methemoglobinemia. Symptoms include a bluish <br /> color of the skin, as well as headache, dizziness, weakness, and difficulty breathing. <br /> Ingestion of high levels of nitrates over time can also lead to gastric problems. <br /> DBCP is a nematocide and soil fumigant for vegetables and grapes. It is known to <br /> cause male reproductive effects and is classified as a probable human carcinogen. <br /> Most domestic use of DBCP was discontinued in 1977 through 1979. The US EPA set <br /> the MCL at 0.2 parts per billion (ppb, equivalent to ug/L) because it believes that given <br /> present technology and resources, this is the lowest level to which water systems can <br /> reasonably be required to remove this contaminant should it occur in drinking water. <br /> The Maximum Contaminant Level Goal (MCLG) for DBCP is zero. <br /> Soil Profile and Geologic Information <br /> The Site is depicted on the Geologic maps of the Sacramento-San Joaquin Delta, <br /> California (Atwater, 1982). The Site is depicted within a map unit of Holocene and/or <br /> Upper Pleistocene "alluvium of Creeks from the Corral Hollow Drainage to Brushy <br /> Creek" (Plate 8). <br /> The surface and near surface soils located at the Site are reported by the USDA Web <br /> Soil Survey to be composed of Capay clay (Plate 9) (USDA, 2019). The table below <br /> presents some selected properties of this soil: <br /> Table 1. Selected Properties of On-Site Soils (USDA, 1992) <br /> Soil Name Depth Unified Soil Salinity Soil Perme- Septic tank <br /> and Map Reaction ability absorption <br /> Symbol (in) Classification mmhos/cm pH (in/hr) fields <br /> Capay Clay, 0-20: Clay: CH, CL <2 6.6 - 8.4 0.06 - 0.2 Severe: <br /> 0-2% 20-60: Clay, silty clay: CL, CH <2 6.6 - 8.4 0.06 - 0.2 peres slowly <br /> slopes, 118 <br /> Note: The table descriptions do not necessarily reflect site-specific soil properties. See description of the map unit for <br /> composition and behavior characteristics of the map unit. <br /> Soil Borings <br /> On February 6, 2020, Live Oak excavated a shallow soil boring near the proposed <br /> septic disposal area of the Site for the purpose of conducting a percolation test. The <br /> boring was four inches in diameter, 3.25 feet deep, and was excavated by hand auger <br /> (Table 2). <br /> The location of the boring is indicated on Plate 10. <br /> LOGE 20-05 Page 5 <br />