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Dacembcr I6,2M2 Job Ymnbm. LCA2-213 P,Agc Ia. (' Nitrates from Agrkalture Leaching losses of nitrate fertilizer occur when sobs have more incoming water (rain or irrigation) th-an the soil can hold. As watef moves through the soil, thenitrate (NO3-) that is in soil solution moves along with the water. Ammonium (NHS`) forms of N Eve a positive charge and are head by the negative sites on the clay in the soil; therefore, NI -L' .forms of N leach very little. In sands wherc there is very, tittle -clay, ammonium farms of N can leach. Coarse-texturead r sands and some much soils are the only soils where ammonium leaching may be significant. t, One Ray.to Tginimizc N leaching and'denitrification is Ki minimize the time the1NT is in the soil- b6ore plant vptakc: This cuts down on the time when conditidns are fevorlbic for los-ss,' Proper management of agricultural property significantly reduces the potential nitrate impact to ground water. The orchard Qtmagment of the propwy' is co Mucal by the occupant of the residence. Our office understands that no application of fertilizer has been used for the orchard. The ottltard apparently rdceivas its nutr�rom the ckailow g6und water which exists it &dcuth of �3 fee -The orchard appears to be in good and healthy condition_ Since a application of (! orchard fertilizers does not occur within the orchard, fertilizers will not be considered in the nitratc balance. t Nitrate Loading Ama lysis , j The nitrate loading analysis was performed for the fu11 Phase II development wid1 cw residenoc. The result of the analysis 'indicat�d that the Nc*%,Auc was 4.0 mgfL-N. The -water quality goal of Icss titan 10 mgrL (Ne) is rea}rnmended for the percolating i:fflucat for the pn)je& The calculatea Ne value for the project was found to be well -below the mayimum contaminate level of IQ mS1L.N'based on the assumptions discussed.. A summary of the nitrate Cloading analysis is presented next. ° Vitoah-. M. L-, J: W. Job um and U, 13- Meavel. July 1995. Tr slaty. Fertilizer Recommeadatkms for Corn, &jbaana, Wheat rad Alfalfa, Ext4wivn Bulletin E-2561.