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v *M/ NUTRIENT/WASTE PRODUCTION-ACAMPO RANCH The Acampo Ranch is proposed to house approximately 500 heifers and 400 calves (3 mos.to one yr.) exclusively at this Ranch. There will be no flushing of manure into the primary holding pond. If needed for temporary storage, only scraped manure will be placed in this pond. The Total Animal Units are based upon the proposed heifer and calf population: 500 x 0.73 + 400 x 0.35 = 505 x 1.4 = 707 Total Animal Units (See N1WMP No. 3) 707 AU x (0.75 ft3/day/AU)(7.48 gal/ft ) = 3,966 gallons/day. 3,966 gals/day x 120 days storage= 476,000 gallons. NUTRIENT CONTAINMENT STRUCTURE VOLUMES-ACAMPO RANCH The Acampo Ranch has an irregularly-shaped holding pond referenced as the primary holding pond and is --40 feet wide by -160 feet long by -8 feet deep. This pond is near the defunct milk barn, calf pens and the north open corrals. Functioning as the de Snayer Heifer Ranch, this pond will receive approximately 65% of the heifer and calf waste that may flow in from rainfall, or pushed in. This is because solids from the corrals will be cleaned periodically throughout the spring and summer months, and before the winter rains for land application at the Acampo Ranch. After the rainy months, the corrals will again be cleaned for land application prior to spring planting of silage corn and before the end of alfalfa dormancy. In addition, manure from the south corrals cannot be washed or pushed into the north primary holding pond. A south secondary pond, which is 85 feet wide by 190 feet long and 4 feet deep, serves as storage for silage liquor runoff from the adjacent silage bunker. The following calculations illustrate the volume capacities for each of the storage structures on the Acampo Ranch, and are based on the formulae presented above: NORTH PRIMARY HOLDING POND STORAGE VOLUME Volume= (36 x 154 x 6)- [(1 x 36)x(36+ 154)]+(4 x 1 x 216_3)=26,712 ft3 or 199,828 gallons SOUTH SECONDARY POND STORAGE VOLUME Volume= (73 x 178 x 2)- [(3 x 4)x(73+ 178)]+(4 x 9 x 8-3)=23,072 ft'or 172,579 gallons PRIMARY IRRIGATION WATER CONVEYANCE DITCH VOLUME 6,500 Total Lineal Feet x 15 feet wide x 10 feet deep. Trapezoidal Formula: V=0.5 x LD(Floor width + LV) x L Volume=0.5 x 8(10+ 12)x 6,500=572,000 ft'or 4,278,560 gallons TOTAL STORAGE VOLUME FOR POTENTIALLY MANURED WATER ORIGINATING AT THE ACAMPO RANCH Volume=621,784 ft'or 4,651,000 gallons Since the primary irrigation water conveyance ditch is an extension of the primary holding pond, it is noted from the following calculations illustrated in Table 7, that sufficient 120-day storage capacity exists at the Acampo Ranch: a -11- Chesnq Consulting