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RESULTS AND DISCUSSION DOMESTIC WATER The domestic water test results indicate a comparatively saline water,which is indicative of this locale. There has been salt water intrusion from the Delta for several years. The nitrate concentration is extremely low at 2 ppm. The Maximum Contaminant Level(MCL) for nitrate is 45 ppm. Considering the intensly farmed region and high groundwater elevation, a higher nitrate level would be expected. This low concentration indicates there are 1.) sufficient clay layers to impede the downward migration of nitrate, 2.)there is significant denitrification occurring, and 3.)there may be a massive dilution effect from San Joaquin River and Delta water. STORED MANURE NUTRIENT ANALYSIS Test results indicate the manure produced by the facility animals contains approximately 52 lbs of nitrogen, (59.81bs/ton x 100 - 12.6%- 100= 521bs/ton as received), 40 lbs of phosphorous and 92 lbs of potassium per ton of material. The sampled manure, as tested, contained 12.6% moisture content. The estimated weight of the stacked manure is 982 W x 61bs/ftp = 5,892 lbs= 3.0 tons. Therefore,the stacked material has the following nutrient concentration: 52 lbs N/ton x 3 tons= 156 lbs N 40 lbs P/ton x 3 tons= 120 lbs P 92 lbs K/ton x 3 tons=276 lbs K ON-SITE CROPLAND SOILS: CURRENT NUTRIENT STATUS AND MANURE APPLICATION CALCULATIONS The last crop grown on the seven acres of cropland associated with the facility was Sudan grass in the winter of 1999. It is our understanding that a synthetic nitrogen fertilizer was applied as a pre-plant after stubble was tilled under. Surface soil analysis (0-7 and referenced as CRPLD I under Sample Number) as reported on the SOIL ANALYSIS REPORT indicates anitrogen content of 34 ppm nitrate-nitrogen. This concentration may be attributed to an initial oversupply of nitrogen fertilizer in addition to mineralization of past stubble plowdowns, thus creating ammonium and nitrate. Subsurface soil analysis (4 ft below grade and referenced as C P D 4 under Sample Number) indicates the soil has a low nitrogen content of 7 ppm nitrate nitrogen. Therefore,the nitrate-nitrogen is primarily confined to the upper surface soils and has not significantly leached downward toward the shallow groundwater. On average, each 7 inches of soil depth weighs approximately 2 million pounds. Consequently, the test result of 34 ppm can be multiplied by 2 to determine the current nitrate-nitrogen concentration of the root zone in pounds per acre (lbs/ac): 34 ppm x 2 =68 lbs N/ac. Page -5- TaCCey Ag Research