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3. BED CONFIGURATION:(less <br />GURATION:(less than 6% slope) <br />A. Required Bottom Area: <br />B. Select size Multiplier: <br />Designed Bottom Area: <br />C. Select Bed Width: lft <br />Ift2 <br />1.0 = pressurized <br />11.5 = gravity (not allowed in rapidly permeable soils) <br />Ift2 <br />Maximum width = 25 ft. (pressurized) <br />Maximum width = 12 ft. (gravity) <br />D. Calculate Bed Length: Designed Bottom Area (3.B) : Bed Width (3.C) = Length <br />E. Select Sidewall Absorption : I <br />ft2 T <br />I ft=l <br />inches below the pipe = <br />Ift <br />Ift <br />F. Calculate Rock Volume:( Rock Depth (3.E) + 0.5 foot) X Adjusted Bottom Area (3.8) = ft3 <br />(I <br />ft+0.5)XI <br />Calculate Volume in cubic yards: Rock volume in cubic feet (3.F) + 27 = cubic yards <br />27 <br />Iyd3 <br />Ift3 <br />. ORGANIC LOADING: (if pretreatment is being used) <br />A. Organic Loading = Design Flow X Estimated BOD in mg/L in the effluent X 8.35 : 1,000,000 (See Table III) <br />Img/L X 8.35 : 1,000,000 , = I Ilbs 80D <br />IXI <br />B. Calculate System OrganicLoading: lbs. BOD (4.A) : Bottom Area (2.C) or (3.B) = lbs/day/ft2 <br />ft I I = I Ilbs/day/ft2 <br />Table III (7083.4030) 1 <br />BOD Treatment BOD (mg/L) <br />Level A 15 <br />Level B 25 1 <br />Level C 125 1 <br />Comments: <br />I hereby certify that I have completed this work in accordance with all applicable ordinances, rules and laws. <br />Michael Jungbauer <br />(Designer) <br />L3227 10/3/2011 <br />(License #) (Date) <br />