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5310 Las Positas Circle, Stockton <br /> 5 Bedroom House <br /> Effluent Quantity (Q) 750.00 gals/day Nr _ I*Nw(1-d)+RNb I _ Q*365*12 <br /> Effluent Stream (Nw) 35.00 mg/L-N (I+R) A*7.48*43560 <br /> Site Area (A) 1.49 Acres <br /> I= Volume rate of water water entering the soil averaged over the gross <br /> Concentration Rain (Nb) 1.00 mg/L-N developed area, in inches per year. <br /> Denitrification (d) 0.35 Nw= Total nitrogen concentration of water water, in milligrams per liter. <br /> Average recharge rate of rainfall, in inches d= fraction of nitrate-nitrogen loss due to denitrification in the soil. <br /> per year (R) 3.72 in/year <br /> R=average recharge rate of rainfall, in inches per year. <br /> Uniform waste water loading I 6.77 in/ ear Nb= Background nitrate-nitrogen concentration of rainfall recharge at the <br /> Total Nitrate-N Concentration of waste water table, exclusive of waste-water influences, in milligrams per liter. <br /> water percolate (Nw) mg/L-N <br /> No Area of localized recharge? <br /> 65 ft Seasonal high depth to groundwater <br /> Uniform waste water loading (I) 6.77 40 ft 2 Depth of vadose zone from bottom of DF to seasonal high groundwater <br /> 30 ft Total feet of confining layers from bottom of DF to seasonal high groundwater <br /> 75% % 5 Percent confining layers in vadose zone <br /> Input Parameters 0.5 point for every 10' of vadose zone <br /> Calculated Paramter 1 point for every 10% confining layer up to 50% <br /> Result <br /> Dispersal Field = DF 1986 65' <br /> 1978 75' Public Water System - no wells within 300' <br /> 1997 75' <br /> 1998 70' <br /> 1999 65' <br />