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Attachment 1 -3- <br /> Dairy Waste Load Calculations <br /> No. of Head AU <br /> Dry Cows & Bred Heifers x .75 <br /> Heifers (1 year to Breeding) x .7 <br /> Calves (3 months to 1 year) x .4 <br /> Baby Calves x .25 <br /> Total AU <br /> Calculate nitrogen loading (dry waste only) lbs N/vear <br /> AU x lbs N/AU/day (same as above) x .75 x <br /> N retention (same as above) x 365 = <br /> Total N available in dry waste <br /> Subtract amount exported (if any) <br /> Total N output for the dairy <br /> 8. For land under the same management as the dairy or where there is a written <br /> agreement to receive dairy waste, calculate crop nitrogen requirement: <br /> Crop Nitrogen Total <br /> Requirement Per. Acre Nitrogen <br /> Croo Acres (Table) Needed ( lbs) <br /> ALFALFA 200 X 450 = 90 , 000 <br /> DBL CROP 242 X 315 = 76 , 230 <br /> CORN & OATS x <br /> x = <br /> x - <br /> x <br /> x = <br /> Total acres 442 Total N needed166 , 230lbs <br /> If the total nitrogen needed calculated in step 8 exceeds the total <br /> nitrogen available (the sum of steps 5 and 6 or step 7) , no further action <br /> is necessary. (This assumes that the wastes are being spread on the land <br /> at rates to meet crop fertilizer needs) . <br /> If available N exceeds N needed by crops , arrangements must be -made to <br /> export more waste from the facility and the calculations changed <br /> accordingly or a report must be submitted to the Regional Board showing <br /> that rates of waste application are reasonable for the crop, soil, special <br /> local conditions , management system and type of waste, and will not .pose <br /> a threat to water quality. <br />