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DocuSign Envelope ID: D8AA32DD-94F0-4A26-ACCF-EFE01 D862864 <br />0.45 gpd/fe Absorption area Soil Loading Rate, which gives a mound ratio ofP2.7] <br />(minimum) <br />(this must match the soil boring log) desired mound ratio <br />percent site slope (0-20% range) = (% 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 F70 inches of 50% soil credit. Giving a: <br />24 inch, or 2.0 ft. Sand Lift Mound CRITICAL FOR FUTURE CERTIFICATIONS111 <br />M 27.4 ft.Total ABSORPTION width (with sand beyond rockbed as follows:) <br />�8)P17.0]ft. <br />ft. upslope and sideslope <br />Downslope <br />Individual slope ratios give BERM widths (topsoil beyond rockbed) of: <br />19) 4:1 upslope ratio13 ft. upslope berm <br />30) 4:1 sideslope 18 ft. sideslope berms <br />3 i i 4:1 downslope 23 ft. downslope berm <br />32) Overall Dimensions: 10.0 ft. wide by F'99'lft. <br />2.ft. tong Rock bed <br />46 ft. wide by long Mound footprint <br />4" inspection pipe <br />18" cover on top <br />Upslope berm 13 .I 1� L Downslope berm 23 <br />12" cover on sides <br />(6" loamy cap & 6" topsoil) <br />2.0 11 Clean sand lift <br />Depth tc, Liinitirv, <br />Lisnilin (.allc3stis.,r1 - .__.__._._- -- - •�— 14 _.-- <br />Absoivtion Width 27.0 <br />Note: <br />For 0 to 1% slopes, Absotption Wldth is measarred from the Bedequally in both directions. <br />For slopes >1%, Ahsdrptidn Widthis measured downhill from the upslope edge of the Bed. <br />Rock Bed: <br />10.0 ft. by 62.5 ft. by inches under pipe, plus 20% gives 28 yd' or "1.4= 39 ton <br />34) Mound Sand: (note: volume is based on 3-.1/4:1 slope from top of rockbed, Exchange sand for loamy cap if desired) <br />50.2 up + 102.7 downslope + 18.1 ends + 52.1 under rock = F268 yds or "1.4= F375 ton <br />plus 20% <br />Loamy Cap: <br />42 ft. by 95 ft. 6" deep, plus 20% gives89 yd' or "1.4= 125 ton <br />Topsoil: <br />46 ft. by 99 ft. 6" deep, plus 20% gives 101 yds or *1.4= 141 ton <br />I hereby certify that I have completed this work in accordance with all applicable ordinances, rules and laws. <br />^r 1/20/2022 <br />Designer Signature Company License# Date <br />