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0.45 gpd/ft2 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 15 percent site slope (0-20% range) 15 (% downslope site slope, if different than upslope) 18 inches, or t.5 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: 18 inch, or 1.5 ft. Sand Lift Mound CRITICAL FOR FUTURE CERTIFICATIONSH! 27.0 ft.Total ABSORPTION width (with sand beyond rockbed as follows:) 0.0 ft. upslope and sideslope 17.0 ft. Downslope Individual slope ratios give BERM widths (topsoil beyond rockbed) of: 4;1 upslope ratio 9 ft. upslope berm 3:1 sideslope 15 ft. sideslope berms 3;1 downslope 30 ft. downslope berm Overall Dimensions: iEl ft. wide by 63.0 ft. long Rock bed ft. wide by 1 93 ft. long Mound footprint 4" inspection pipe �� 18" corer on top berm I I .I � 6 Downslope berm 30 ``-� 12" cover on sides (6" loamy cap &6" topsoil) 1.5 Clean sand lift 1.5 Depth to Limiting Limiting Condition ---_—__ Absorlotion Width 127.0 1'—" _—__ --_— Note: _ For 0 to 1 slopes, .4bsorptlon Width is measured from the f3edequalty in both directions. For slopes >1%, Absarptron Width is measured downhill from the upslope edge of the Bed. Rock Bed: 10.0 ft. by 63.0 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) 24.4 up + 143.1 downslope + 17.8 ends + 52.5 under rock =285 yd3 or *1.4m 399 ton plus 20% Loamy Cap: 45 ft. by 89 ft. 6" deep, plus 20% gives Topsoil: 49 ft. by 93 ft. 6" deep, plus 20% gives I hereby certify that I have completed this work in accordance erSignature 89 yd'or*1.4= 125 ton 102 yd'or*1.4= 143 ton all applicable ordinances, rules and taws. Rusty Olson"s Soit lx Perc 810 Company 11/18/2019 cicenseff uate