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Minnesota Pollution OSTP Mound Materials Worksheet UNIVFRS,TY OF MINNESOTA Control Agency Project ID: v 04.20.2016 A. Calculate Rock Volume : (Rock Below Pi e + Rock to cover i e ipe dic - r inch) ) X Bed Len th 12.D1 X Bed Width (2.B) = Volume ift') 6.00 n - 3.00 n) - 12 X 63.0 ft XL. 10.0 ft = 472.5 1t' Divide ft- by 27 ft3/yd3 to calculate cubic ards: 472.5 ft' 27 = 17.5 7yd3 Add 20% for constructability: 17.5 yd' X 1.2 = 21.0 yd= For systems using other distribution media - see product registration for material required B. Calculate Clean Sand Volume: Volume Under Rock bed: Average Sand Depth x Medic Width x Medic Length = cubic feet 2.2 ]ft X 10.0 Ift X 1 63.0 Ift = F 1386.0 For a Mound on a slope from 0-1% Volume from Length = ((Upslope Mound Height - 1) X Absorption Width Beyond Bed X Media Bed Length) ft - 1) X I X ft = Volume from Width = ((Upslope Mound Height - 1 X Absorption Width Beyond Bed X Media Bed Width) ft - 1) X X ft = Total Clean Sand Volume: Volume from Length - Volume from Width - Volume Under Media ft- ft - ft = ft' For a Mound on a slope greater than 1% Upslope Volume: ((Upslope Mound Height - 1) x 3 x Bed Length) - 2 = cubic feet (( 3.5 ft - 1) X 3.0 ft X 63.0 ) - 2 = 236.3 ft' Downslope volume: ((Downslope Height - 1) x Downslope Absorption Width x Media Length) - 2 = cubic feet ft - 1) X 16.0 ft X 63.0 ) - 2 = 146t.b ft3 Endslope Volume: (Downslope Mound Height - 1) x 3 x Media Width = cubic feet ( 3.9 ft - 1 ) X 3.0 ft X 10.0 7ft = 87.0 ft' Total Clean Sand Volume: Upslope Volume . Downslope Volume . Endslope Volume - Volume Under Media 236.3 ft' _ 1461.6 ft' 87.0 ft' _ 1386.0 ft' = 3170.9 ft' Divide tt' by 27 ft'/yd' to calculate cubic yards: I 3170.9 I ft- s 27 = 117.4 yd Add 20% for constructability: 117.4 yd- X 1.2 = 140.9 yd, C. Calculate Sandy Berm Volume: Total Berm Volume (approx): ((Avg. Mound Height - 0.5 ft topsoil) x Mound Width x Mound Length) - 2 = cubic feet ( 3.7 0.5 )ft X 42.0 ft X 87.0 ) - 2 = 5846.4 ft3 Total Mound Volume - Clean Sand volume -Rock Volume = cubic feet 5846.4 ft 3170.9 ft' 472.5 ft' = 2203.1 ft Divide ft' by 27 ft'/yd'to calculate cubic yards: 2203.1 ft' 27 = 81.6 yd, Add 20% for constructability: 81.6 yd' x 1.2 = 97.9 yd' D. Calculate Topsoil Material Volume: Total Mound Width X Total Mound Length X .5 ft 42.0 ft X 87.0 ft X 0.5 ft = 1827.0 ft' Divide ft' by 27 ft'/yd'to calculate cubic yards: 1827.0 ft' e 27 = 67.7 yd} Add 20. for constructability: 67.7 ydx 1.2 - 81.2 yd'