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Alternative 3--Aerated Static Pile <br /> Assume extended pile method <br /> Assume 75 foot long piles <br /> Assume 8 feet overall hieght <br /> \ssume 15 feet overall width <br /> Assume 1 foot base and 1 foot blanket <br /> Assume 1:1 angle of repose <br /> Total volume per pile <br /> Cross-sectional area 120 ft2 <br /> Area of compost mixture 84 ft2 <br /> Area of base 15 ft2 <br /> Area of cover 21 ft2 <br /> Assume use of eco-block end wall at blower <br /> Ignor volume at end of pile; i.e. last 8 feet <br /> Volume per 75 foot pile <br /> Total 1 298 CY <br /> Compost mixture 208 CY <br /> Base 42 CY <br /> Cover 58 CY <br /> Biofilter <br /> Aeration fan size 400 cfm @7.5 in H2O 2 Hp <br /> Size biofilter for 75%of fans operating at the same time <br /> Biofilter sizing criteria 1 3 cfm/ft2 <br /> Biofilter area per static pile 100 ft2 <br /> Assume biofilter width 15 ft (20 ft overall with allowance for inlet piping) <br /> Linear feet of biofilter per static pile 7 ft <br /> Total number of aerated static piles <br /> Number Biofilter Total Compost <br /> of Static Length (CY) Mixture <br /> Piles (ft) (CY) <br /> C1 40 267 11,911 8,338 Four biofilters @ 75 feet long <br /> C2 40 267 11,911 8,338 Four biofilters @ 75 feet long <br /> C3 23 153 6,849 4,794 Two biofilters @ 75 feet long <br /> C4 46 307 13,698 9,588 Four biofilters 0 75 feet long <br /> C5 42 280 12,507 8,755 Four biofilters @ 75 feet long <br /> C6 13 87 3,871 2,710 Two biofilters @ 75 feet long <br /> Total 60,747 42,523 <br /> FN: dtr/a:\COMPVOL.XLS Page 2 of 4 Printed: 9/2/9412:17 PM <br />