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!3) 0.45 gpolft2 Absorption area Soil Loading Rate, which gives a mound ratio of 2.7 (minimum) (this must match the soil boring log) desired mound ratio 1 2.7 4) 15 percent site slope (0-20% range) 12 (% downslope site slope, if different than upslope) S) 12 inches, or 1.0 ft. to Redox or other limiting condition (need at least 12" to be a Type 1) Treatment zone contains=inches of 0% soil credit, and =inches of 50% soil credit. Giving a: 6) 24 inch, or 2.0 ft. Sand Lift Mound CRITICAL FOR FUTURE CERTIFICATIONS!!! 7) 27.0 ft.Totat ABSORPTION width (with sand beyond rockbed as follows:) 8) OA ft. upslope and sideslope 17.0 ft. Downslope Individual slope ratios give BERM widths (topsoil beyond rockbed) of: 9) 4:1 upslope ratio 10 ft. upslope berm sideslope 17 ft. sideslope berms downslope 30 ft. downslope berm Overall Dimensions: Upslope beret Limping Car 10.0 11 ft. wide by 63.0 ft. long Rock bed 50 ft. wide by 9 _L7j ft. long Mound footprint 4" inspection pipe i— 18" cover on top 2.ol Clean sand lift 1,p Depth to Liimiting Absorption Width berm 1 3D 12" coater on sides (6" loamy cap & 6" topsoil) 27.0 — — — --1---- _-----_ Note: " For 0 to 1` slopes, absorption Width is measured from the Bedequally in both directions. For slopes X1%, A.bsorptlon Width is measured downhill from the upslope edge of the Bed. Rock Bed: 10.0 ft. by 63.D ft. by inches under pipe, plus 20% gives =yd' or *1.4= 29 ton Mound Sand. (note: volume is based on 3:1/4:1 slope from top of rockbed, Exchange sand for loamy cap if desired) 36.8 up + 160.0 downslope + 22.5 ends + 64.2 under rock = 340 yd' or *1.4= 476 ton plus 20% Loamy Cap: 46 ft. by 93 ft. 6" deep, plus 20% gives 96 yd' or *1 A= 134 ton Topsoil: 50 ft. by 97 ft. 6" deep, plus 20% gives108 yd' or *1.4= 151 ton I hereby certify that I have comp Designer Signature this work in accordance with all applicable ordinances, rules and taws. Rusty Olson"s Soil & Perc 810 7/22/19 revised Company License# Date