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Soil Physical Properties & Suitability Analysis To Receive Agricultural Waste: Properties currently farmed with this dairy operation: Properties Owned: APN# Total Acres Farmed Acres 229-12-34 78.26 52.3 229-12-32 9.79 6 229-12-33 9.79 9 229-12-18 39.63 38 229-12-16 19.97 19 Properties Rented: 229-13-03 85 229-12-30 21.45 19 Total farmed acres: 228.3 Note: The capability of soil to receive agricultural waste is classified in three categories:slight, moderate and severe. Each labeling the soils' capability limitations to the applications of agricultural Two soil samples were selected from boring MDS-I for physical properties analysis. The samples were left in the two by six inch brass or stainless steel sleeves and submitted to Sierra Testing laboratories in EI Dorado Hills,California. The samples were tested,as received in the sleeves for Flexible-wall Permeability using ASTM Method#D5084. After completion of the permeability tests,the samples were removed from the sleeves and subjected to a size analysis using sieves and hydrometer(ASTM Method #D422). Findings: Soil Profile: Two water supply wells were installed on the Manuel Da Silva property. One of these were installed at the dairy sand one at the Manuel Da Silva residence. The residence well was completed on October 7, 1993,to a depth of 245 feet,where as,the dairy well attained a depth of 245 feet on September 1, 1995. Logs of both of these wells show a lithology dominated by enterlayered sand and clay. The residence well intersected coarse sand and gravel layers at depths of 80 to 94 and 107 to I I 1 feet below the surface. The dairy well encountered these coarse-grained units from 75 to 80 feet and 110 to 135 feet. (See appendix A). The soil borings carried out in the present study allow a more precise definition of these sediments down to a depth of 40 feet. In the boring MDS-1, which was drilled adjacent to the present holding pond, the sediments are dominated by an upper sequence of clayey sands down to a depth of approximately twenty one feet below surface. Below this level,down to the total hole depth of 41.5 feet,the sediments consist of silts and clayey silts. A thin layer of clayey sand is present near the bottom of the boring. The sedimentary sequence on MDS-2 is dominated by sand,with silt and clay layers. The thickest of these fine-grained sediments is present from approximately 21 to 28 feet below ground surface. A layer of hardpan is present from one to three feet in depth. Soil Analytical Results: Nitrate and TKN Analytical results of soil samples for TKN from MDS-1 show none detected values for all samples collected. Damoles analyzed for nitrate show consistent values of about 30 mg/Kg in the upper sandy sequence down t twenty feet below ground surface. At 25 feet the citrate values increase to maximum of 43 mg/Kg. However,below this level,nitrate concentrations decrease and the last sample, at 40 feet, shows none detected levels of nitrate. These data are interpreted as nitrate levels in the upper sandy sedimentary sequence as a result of leaching from land application of animal waste or lateral migration from the waste impoundment. The higher level of nitrate at 25 feet indicates pounding at the top of the clayey silt layer and decrease of nitrate below that level down to non detect at 40 feet shows that the clayey silt layer is preventing the downward infiltration of nitrate below that level. 6