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'MOUND DESIGN WORKSHEET For-ftowis up to IM WM <br /> A. Estimated 1 d or measured X 1.5 = gpd <br /> B. SEPTIC TANK LIQUID VOL-UI�M- _5GG6& _ <br /> C. SITE EVALUATION INFORMATION <br /> 1. -Depth of clean sand.req. "t8:U0 inches or 1.50 feet <br /> 2. t?#-Vth of-percolation tests 'i2 inches <br /> .`3. Soil Texture CL <br /> 4. -Perk.Rate- mpi <br /> -5_ -Land-Mope percent <br /> D. ROCK LAYER DIMENSION$ <br /> 1. Multiply flow rate by 0.83 to obtain required area of rock layer. <br /> 600 gpd X -$$3 " sgfggpd -498,00 ft. rock area <br /> 2. -Select width of rock layer - (6 A'if ri g$er- 5`if>i2Q) 10.I? _ eet-. <br /> 3. 44ockbed length {amal wo- 4W.W - sq.ft:'f, 410--G feet= 5Q feet <br /> E. ROCK VOLUME <br /> 1. Multiply rock area by rock depth to-get cubic feet of rock.- <br /> ,498 <br /> ack:,198 sq.-ft-X 1.0= ftDaf= 495- cubic feet <br /> 2. Divides cubic feet by 27 to-get- yards. <br /> -498 Eu.ft.-/- 27 - 1-&- ' zubicyards <br /> 3. Mu#tiply-cubic yards by 1.4 togetweight oftock in tQns: <br /> 18 cu. yd. X 1.4= - 25:5 ttons=X 10% = 32.3 tons <br /> F. ADSORPTION WIDTH <br /> 1. Percolation-rate in top 124#0- tesof soil is- 10.0- m i <br /> -Soli Texture-is town s zin factoF <br /> _2..-Selea allowable soil.loading rale from table. � - pd t sq�:ft. <br /> . -. &OILTEXRM Gt <br /> FAaTM>a.t COMSE SAM so <br /> �y Ta s sin i za. TM <br /> _ 01 Toy FMIESAND 4B0 .@D <br /> e TO IS AMMLOW 0.79 1.50 <br /> -14m aa "IAM 0.60 e <br /> 31 TO ON SiLT.LQA01 050 200 <br /> W-P31 - CLAY-LOW 4+I61 �EZ- <br /> -�9T0120 [X:AY Q24 <br /> Im $flt? <br /> s CLAY 0.20 <br /> 3. Calculate adsorption width ratio-by dividing rock layer loading rate <br /> of 1.20 gpd/sq, ft. by allowable soil loading rate: <br /> 1.20 gpd1 sq.-divided-ley 0. 5- -bpd-/s% ft. equals - 2.67 <br /> 4: Multiply adsorption width ratio-by-rock layerwidth to get required adsorption width: <br /> 2.67 X 40.0 -feet­. ' 26-7 -feeLadsorptionwidth <br /> PAGE 4- of 17 280 Watertown Road, Orono <br />