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31) O.bO gpd/ftz Absorption area Soil Loading Rate, which gives a mound ratio of (minimum) this must match the soil boring log) desired mound ratio 2.0 11 percent site slope (0-20% range) 11 (% downslope site slope, if different than upslope) 14 inches, or 1.2 ft. to Redox or other limiting condition (need at least 12" to be a Type 1) Treatment zone contains =0 inches of 0% soil credit, and =inches of 50% soil credit. Giving a: 22 inch, or 1.8 ft. Sand Lift Mound CRITICAL FOR FUTURE CERTIFICATIONSII I 20.0 ft.Total ABSORPTION width (with sand beyond rockbed as follows:) 0.0 Ift. upslope and sideslope 10.0 Ift. Downslope Individual slope ratios give BERM widths (topsoil beyond rockbed) of: 4:1 upslope ratio 10 ft. upslope berm 3:1 sideslope 14 ft. sideslope berms 3:1 downslope 21 ft. downslope berm Overall Dimensions: 10.0 ft. wide by 53.0 ft. long Rock bed 41 ft. wide by 1 91 ft. long Mound footprint 4" inspection pipe r— 18" cover on top Ui)slooe berm 10 1.8 Lirniting Condition berm 1 21 12" cover on sides 6" loamy cap &.6" topsoil) Clean sand Lift Depth to Limiting Absorotion Width F70.0 "- T — _ .I_.._ _ _. _ a _ _ — Note: For 0 to 1% slopes, Absorption Width is measured from the Bedequally in both directions. For slopes ?1%, Absorptioa Width is measured downhill from the upslope edge of the & -d. Rock Bed: 10.0 ft. by 53.0 ft, by inches under pipe, plus 20% gives =yd3 or *1.4= 2q ton Mound Sand: (note: volume is based on 3:1/4:1 slope from top of rockbed, Exchange sand for loamy cap if desired) 34.3 up + 109.1 downslope + 17.2 ends + 55.6 under rock = 259 yd' or *1.4= 353 ton plus 20% Loamy Cap: 37 ft. by F 87 ft. 6" deep, plus 20% gives Topsoil: 41 ft. by =ft. 6" deep, plus 20% gives completed this work in acco 72 yd' or *1.4= 101 ton 83 yd' or *1.4= 116 ton all applicable ordinances, Rusty Olson's Soil it Perc 810 2/20/2023 re Company License# Date