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Surface and Subsurface Connf mination Report***0**** APM 005-09-53 **� "�***Parcel Nos. 1 and 2 San Joaquin loam deep soils are strongly developed hardpan soils and are derived from old alluvial deposits now occurring as terraces. They are composed largely of materials of granitic origin. The term"Red-Iron Hardpan Land" is commonly used to describe this soil. The soil is brownish-red, acid in reaction, and usually light to medium textured. Loam and sandy loam types are recognized in this soil classification. A typical profile of San Joaquin sandy loam follows: (1) To depth of about 9 inches,the soil is reddish brown, friable, easily penetrated by roots and water but bakes hard when dry. The pH is about 5.4. (2) From about 9 to 18 inches, the soil is redder and heavier textured. (3) From IS to 24 inches,there is a compact clay with suggestion of a prismatic structure. (4) The clay layer rests abruptly, at about 30 inches, on a yellowish-brown, iron cemented hardpan. The surface of this layer is very hard and it may vary in thickness from a few inches to 18 inches or more. Sometimes the hardpan contains a little lime. (5) Below the hardpan the material becomes friable and stratified. The soil occupies a gently sloping terraced topography with distinct hog-wallow micro-relief. After having saturated the topsoil to the clay layer, water will stand on the surface until it evaporates. Erosion is negligible. Permeability is good surface and good subsurface. San Joaquin soils are dry-farmed to grain. The yield is good, in favorable rainfall years. Irrigated pasture is grown successfully,but deep rooted crops are undesirable. Grass and a few shrubs are the native vegetation. San Joaquin loam, deep has a Storie Index of 30. San Joaquin soils occur extensively in the eastern part of San Joaquin County. The University of California publication entitled"Soils of San Joaquin County, California,United States Department of Agricultural Soil Conservation Service", issued October 1992, lists the soil to be encountered on the subject property as San Joaquin Urban Land Complex(0-2%). SAN JOAOUIN-URBAN LAND COMPLEX, 0 TO 2 % This soil is on low terraces at elevations varying from 20 to 110 feet. This soil is composed of 50% San Joaquin loam and 35% urban land. These components are so intricately intermingled that it is not possible to map them separately. Included in this soil classification are small areas of Kingdon and Tokay soils on the higher parts of the slope. Also in this classification are small areas of moderate textured soils that have a hardpan at a depth of twenty(20) inches and moderately coarse textured soils that have been ripped and have remnants of claypan hardpan material. Included areas make up about 15%of the total acreage. R nhert W Tnwxa _9CR79 Nn ..tato Rtr QQ F Frnntaoe Rnad - Aramnn-Califnmia Q999U 4