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Total disposal area available of 3,600 ft2 should provide adequate area for the primary disposal <br /> The 100%replacement area is designated as a long, narrow area extending along the front <br /> ance property line, and may then make a 90' turn toward Building "A." Total area= 10 ft wide <br /> -350 totallineal feet = 3,500 ft . <br /> Nitrogen fertilizer should not be applied to the filter bed landscape grass or any other ground cover <br /> on the property. With regard to the filter bed area alone: 34 ppm NO3 as tested for the domestic <br /> water supply from the City of Manteca=34 ppm x 0.612=21 lbs of N/Ac ft of water. Using an <br /> average of one-half inch of domestic irrigation water applied eight months of each year: <br /> 3,600 flz - 43,560 ftZ/Ac=0.083 Ac. x 27,154 gallons/Ac in. =2,244 gallons of domestic irrigation <br /> water-2= 1,122 gallons(one-half inch of water) is applied eight months of each year=240 days x <br /> 1,122 gals/day=269,280 gals_325,851 gals/Ac-ft=0.826 Ac-ft of water). 21 lbs N/Ac ft x 0.826 Ac <br /> ft/yr= 17 lbs of N/yr applied by domestic irrigation water. Using Kentucky blue grass as a landscape <br /> ground cover example: Kentucky blue grass requires 124 lbs N/ac/yr for optimum growth. Therefore, <br /> 124 lbs. N/Ac/yr x 0.083 Ac= 10 lbs N/yr should be applied to the grass over the filter bed area. <br /> However, 0.826 Ac ft of domestic irrigation water at 34 ppm NO3 supplies 171bs of N/yr of the nitrogen <br /> required by this grass, which is 70%above what is required. <br /> LL <br /> Page -12- <br /> Clesrteg Consulting <br />