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EXHIBIT 2: <br />Nutrient and Trace Element Loading Rates <br />a. Nitrogen Application Rate <br />A. Recrn4rend nitrogen fertilizer rate for Rangeland and Pasture Land. <br />- 200 # N/acre <br />B. Available nitrrgen from NH4 _ N - 62 ppm <br />.0062$ x 2000 #/ton = 0.124 # NH4 - N/ton sludge <br />100 (from ~) <br />C. Organic nitrogen - 583 ppm <br />200 #/ton <br />.05833 organic N x 100 (conversion from %) x 0.2 <br />(mineralization rate) <br />- 0.2332 # orgn/ton <br />sludge <br />D. Residual nitrogen in soil = 0 #/acre <br />E. 200 #/acre - 0 #/acre __ 200 #/acre = 559.9 tons sludge/acre <br />.124 #/ton + .2332 # ton 0.3572 #/ton <br />The calculation for nitrogen loading rate describes the amount of sewage <br />sludge that would have to be applied to acheive the recomrended nitrogen <br />fertilizer rate. The proposed sewage sludge application rate is 21 tons/ac. <br /># = pound <br />* = sludge application for Nitrogen; loading rate taken <br />from State of Colorado Dept, of Health; "G~.~idelines <br />for Sludge Utilization Onland". <br />b. Trace Mineral Loading Rate <br />Sludge (dry) tons/acre = CEC x 32,700 <br />ppm SN 4 2 (ppm Cu) + 4 (ppm N. - 200 <br />Average CEC for CYCC = 23 mg/100g. <br />= 23 x 32,700 __ 752,100 = 2492 tons/acre <br />(171) + 2(162) + 4 (1.7) - 200 301.6 <br />,.. ~-«-~;~r <br />... ~ <br />