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v <br /> not extend into this clay unit . Drinking water wells in the <br /> area obtain their water from below the clay unit at depths <br /> greater than 100 feet . Therefore the excavation will not <br /> affect drinking water. Sands will be transported to the <br /> existing Brown Sand processing plant . The current <br /> processing plant and excavation operates under permit from <br /> the California Regional Water Quality Control Board-Central <br /> Valley Region Waste Discharge Requirements and Monitoring <br /> and Reporting Program, Order No. 91-217 (copy attached) . <br /> Compliance with the Waste Discharge Requirements and <br /> Monitoring and Reporting Program will not cause degradation <br /> of any water supply. 3 The watershed, surface and ground <br /> water resources are addressed in the permit requirements . <br /> Ground water levels are shown in the Excavation Site Plan <br /> cross sections . <br /> D. Soils : <br /> The project site has been leveled to agricultural grade and <br /> has been tilled for decades . It is currently planted to <br /> oats, alfalfa, and pumpkins . Soil types include: <br /> Columbia fine sandy loam, clayey substratum, partially <br /> drained, 0 to 2 percent slopes (46. 20 of area) , <br /> Egbert silty clay loam, partially drained, 0 to 2 percent <br /> slopes (45 . 1°% of area) , <br /> Columbia fine sandy loam, drained, 0 to 2 percent slopes <br /> (7 . 10 of area) . 4 <br /> Soil types are shown on the attached soil inventory map. <br /> The soil profiles are shown in the Excavation Site Plan <br /> cross sections . Re-vegetation will take place by the <br /> continuation of the cropping pattern of tilling, planting, <br /> harvesting and then tilling, etc. in the un-mined and <br /> setback areas . Excavated areas will become lake and will <br /> not need re-vegetation. The types of crops planted depend <br /> 3 California Regional Water Quality Control Board-Central <br /> Valley Region Waste Discharge Requirements and Monitoring <br /> and Reporting Program, Order No. 91-217, Mossdale Ranch <br /> Aggregate Sand and Processing Plant, Mossdale <br /> 4 USDA Natural Resources Conservation Service Web Soil <br /> Survey 1 . 1 <br />