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0 0.60 gpd/ftz Absorption area Soil Loading Rate, which gives a mound ratio of 2 (minimum) (this must match the soil boring log) desired mound ratio 2.0 percent site slope (0-20% range) (% downslope site slope, if different than upslope) 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 F 70inches of 50% soil credit. Giving a: 24 inch, or 2.0 ft. Sand Lift Mound CRITICAL FOR FUTURE CERTIFICATIONS] 11 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: 4:9 upslope ratio 13 ft. upslope berm 3:1 sideslope 13 ft. sideslope berms 4:1 downslope 22 ft. downslope berm Overall Dimensions: 10.0 1 ft. wide by 26.0 ft. long Rock bed 45 ft. wide by 52 1 ft. long Mound footprint 4" inspection pipe 18" cover on top Upslope berm 13 1� t, Downslope berm F22 12" cover on sides (6" loamy cap & 6" topsoil) 2.0 FDepth n sand lift 1.0 to Limiting lfmiting Condition ------___ _ Absorption Width - Note: For 0 to 1% slopes, Absorption Width is measured from the 80dequally in both directions. For slopes 71%, Absorption Width is measured downhill from the upslope edge of the Bed. Rock Bed: 10.Q ft. by 26.0 ft. by ©inches under pipe, plus 20% gives =yd' or `1.4= 13 ton Mound Sand: (note. volume is based on 3:1/4:1 slope from top of rockbed, Exchange sand for loamy cap if desired) 24.4 up + 49.9 downslope + 13.6 ends + 21.7 under rock =E-132yd' or *1.4= 184 ton plus 20% Loamy Cap: 41 ft. by 48 ft. 6" deep, plus 20% gives 36) Topsoil: 44 yd' or *1.4= 62 ton 45 ft. by 52 ft. 6" deep, plus 20% gives 52 yd' or *1.4= 73 ton hereby certify that I have completed this work in accordance with all applicable ordinances, rules and laws. Rusty Olson's Soil ft Perc 810 5/10/2022 o esigner Signature Company License# Date