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• Depth to high water table: Depth to high water table is the highest average depth from the soil surface to the zone of saturation during the wettest period of the year. This saturated zone must be more than 6 inches thick and persist for more than few weeks. A shallow depth to high water table may not allow for sufficient filtration or retention of agricultural manure effluent or agricultural manure effluent mineralization by-products. Areas with a high water table greater than 4 feet are considered to have only a slight limitation to the application of agricultural manure effluent, moderate at a depth of 2 to 4 feet, and severe if it is at a depth of less than 2 feet. The depth to high water table varies from approximately 70' to 80' across the site.' It can be concluded that there will be no impact to the around water from manure effluent applications at this site with proper irrigation water—applications. qVW 4bWt- to lin 0� VkNOAe • Flooding: Flooding is the temporary covering of the soil surface by flowing water. Ponded and standing water or flowing water during and shortly after rain is not considered flooding. Soils that have none or rare flooding potential (5 times or less in 100 years) have "slight" limitations for the application of agricultural manure effluent. Occasional flooding (5 to 50 times in 100 years) is a ,'moderate" limitation, and frequent flooding (50 to 100 times in 100 years) is a "severe" limitation. The site and surrounding properties are within flood zone AO, B and C. These zones do not experience flooding.2 Water intake rate, hydrologic soil group: Intake rate is the average rate of water entering the soil under irrigation. Most soils have a fast initial rate; then decreases with application time. The rate of water intake is expressed in inches per hour for various USDA textures. Soils are classified into several groups: A having moderate limitations; B and C having slight limitations; D having moderate; and A/D, B/D, C/D having severe limitations. This property is leveled and has irrigation pipelines, field runoff collection and return pipelines with permanent and portable pumps installed to properly collect and recycle field runoff waters. Soils at the site are classified into group D. The limitations are a result of the slow infiltration and potential runoff from rainfall or irrigation. It is recommended to incorporate agricultural manure effluent immediately following application. • Permeability rate, inches per hour: Permeability (hydraulic conductivity) is the quality of soil that enables water to move downward through the soil profile. It is estimated from soil physical properties and is expressed in inches per hour. Application and incorporation of agricultural manure effluent improves soil surface intake Refer to page 30 for Endnotes and Reference Sources Soil Suitability Study Property Name and Address: Frank Faria Dairy, Inc., 12182 S. Robinson Road, Escalon,CA 95320 Page 17 Western Design/David Avila 2001