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Soils' Profile Soil types at the Joe DaSilva Dairy facility and farm area, referenced from the Soil Survey of San Joaquin County, soil panel#27, Escalon Quadrangle: reference appendix IIIF: Soil type#193': This soil is approximately 20%of the total soil at the existing site. This soil is approximately 95%of the property to the west of the site that is to be purchased in the near future. Name: Madera sandy loam,0 to 2%slopes. This moderately well drained, nearly level soil is on low terraces. It is moderately deep to a hardpan. Typically, the surface layer is grayish brown and brown sandy loam about 19 inches thick. The upper 4 inches of the subsoil is brown sandy clay loam. The next 6 inches is a claypan of light reddish brown clay. The lower part to a depth of 60 inches is a pale brown and brown, indurated,iron-and silica-cemented hardpan. In some areas the surface layer is fine sandy loam or loam. Includes in this unit are small areas of Alamo soils in drainways, Exeter and Jahant soils in landscape areas. Also included are small areas of Madera soils that have slopes of 2 to 5 percent and areas where depth to the hardpan is as little as 10 inches and most of the soil has been removed, altered,or exposed as a result of deep leveling cuts. Included areas make up about 15 percent of the total acreage. Permeability is very slow in the Madera soil. Available water capacity is low. The shrink-swell potential is high The effective rooting depth is limited by the hardpan at a depth of 20 to 40 inches. Roots are restricted to cracks and the faces of peds in the claypan, which is at a depth of 10 to 25 inches. Water is briefly perched above the claypan and hardpan after periods of heavy rainfall or irrigation. Runoff is ponded The hazard of water erosion is slight. The rate of water intake in irrigated areas is 1.5 inches per hour. The main limitations are the complex slopes and the low available water capacity.Because the soil is droughty, applications of irrigation water should be light and frequent. A tillage pan forms easily if the soil is tilled when wet. Returning crop residue to the soil or regularly adding other organic material improves fertility, minimizes crusting, and maintains the rate of water intake. Soil type#237': This is 1%of the soil of the facility. Name: San Joaquin sandy loam,2 to 5%slopes. Moderately well drained, undulating soil is on dissected terraces. It is moderately deep to a hardpan. The surface layer is brown sandy loam about 10 inches thick The upper part of the subsoil is a clay pan of brown clay about 10 inches thick.. The lower part to a depth of 60 inches is a brown and light brown, insurated hardpan. In some areas the surface layer is fine sandy loam. Permeability is very slow in the San Joaquin soil. Available water capacity is very low. The shrink- swell potential is high The effective rooting depth is limited by the hardpan at a depth to 20 to 40 inches. Roots are restricted to cracks and the faces of peds tin the claypan, which is at a depth of 10 to 20 inches. Water is briefly perched above the claypan and hardpan atter periods of heavy rainfall or irrigation. Runoff is slow or medium,and the hazard of water erosion is slight or moderate. The rate of water intake in irrigated areas is 1.5 inches per hour. Soil type#236': This is approximately 4%of the soil at the property. Name: San Joaquin sandy loam,0 to 2%slopes. This moderately well drained, nearly level soil is on terraces. It is moderately deep to a hardpan. Typically,the surface layer is brown sandy loam about 13 inches thick The upper part of the subsoil is a claypan of brown clay about 7 inches thick. The lower part to a depth of 60 inches is a brown and light brown, indurated hardpan. In some areas the surface layer is fine sandy loam, loam, or gravely sandy loam. Permeability is very slow in the San Joaquin soil. Available water capacity is very low. The shrink- swell potential is high. The effective rooting depth is limited by the hardpan at a depth of 20 to 40 inches. Roots are restricted to cracks and the faxes of peds in the claypan,which is at a depth of 10 to 20 inches. 'Sod Survav of San Joaquin Cownv.CA 1992 '' Western Design/David Avila 2000 9