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hsi <br />28) <br />31) <br />0.45 gpd/ft2 Absorption area Soil Loading Rate, which gives a mound ratio of 2.7 (minimum) <br />(this must match the soil boring log) desired mound ratio 2.7 <br />12 percent site slope (0-20% range) 12 (% downslope site slope, if different than upslope) <br />12 inches, or 1.0 ft. to Redox or other limiting condition (need at least 12" to be a Type 1) <br />Treatment zone contains=inches of 0% soil credit, and inches of 50% soil credit. Giving a: <br />24 inch, or 2A ft. Sand Lift Mound CRITICAL FOR FUTURE CERTIFICATIONS!!! <br />27.0 ft.Total ABSORPTION width (with sand beyond rockbed as follows:) <br />0.0 ft. upslope and sideslope <br />17.0 ft. Downslope <br />Individual slope ratios give BERM widths (topsoil beyond rockbed) of: <br />4:1 upslope ratio 10 ft. upslope berm <br />3:1 sideslope 15 ft. sideslope berms <br />3:1 downslope 23 ft. downslope berm <br />Overall Dimensions: <br />berm <br />Limiting Condi <br />L10.0 ft. wide by 62.5 ft. long Rock bed <br />Z43 ft. wide by 1 93 ft. long Mound footprint <br />4" inspection pipe <br />(-- 18" cover- on top <br />iul <br />2.0 Clean sand lift <br />E1.0 Depth to Limiting <br />n- - - - - -------- <br />r Absorption Width <br />berm 23 <br />1 2" carer on sides <br />(6" loamy cap & 6" topsoil) <br />27.0 {------. -_-- <br />Note: <br />For 0 to 1% slopes, 4,bsorption Width is measured from the Bedequally in both directions. <br />For slopes >1%, ,4hsorptiora Width is measured downhill from the upslope edge of the Bed <br />Rock Bed: <br />ft. by E2Eft. by ©inches under pipe, plus 20% gives 21 yd' or "1.4= 29 ton <br />Mound Sand: (note: volume is based on 3:1 /4:1 slope from top of rockbed, Exchange sand for loamy cap if desired) <br />38.0 up + 132.5 downslope 19.6 ends + 60.2 under rock = 300 yd' or -1.4= 421 ton <br />plus 20% <br />Loamy Cap: <br />39 ft. by 89 ft. 6" deep, plus 20% gives <br />36y Topsoil: <br />77 yd' or *1.4= 108 ton <br />43 ft. by 93 ft. 6" deep, plus 20% gives 89 yd' or -1.4= 125 ton <br />I hereby certify that I have completed this work in accordance with all applicable ordinances, rules and laws. <br />Rusty Olson's Soil li Perc 810 9/14/2023 <br />esigner Signature Company License# Date <br />