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1993-06-24 Septic System Design Report
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1993-06-24 Septic System Design Report
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Last modified
9/18/2025 3:09:11 PM
Creation date
9/18/2025 3:00:56 PM
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x Address Old
House Number
760
Street Name
Dickey Lake
Street Type
Drive
Address
760 Dickey Lake Drive
PIN
2711823330009
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MOUND DESIGN WORKSHEET <br />(For Flows up to 1200 gpd) <br />A. FLOW <br />Estimated gpd (see pages D-7 or I-3, 4, 5) <br />or measured gpd x 1.5 = <br />B. SEPTIC TANK LIQUID VOLUMES <br />22 S, C gallons (see pages C-3 or C-5) <br />C. SOILS (refer to site evaluation) <br />1. Depth to restricting layer = 8 inches <br />2. Depth of percolation tests = 1 2 inches <br />3. Percolation rate mpi <br />4. Land slope <br />D. ROCK LAYER DIMENSIONS <br />1. Multiply flow rate by 1.00 to obtain required area of rock <br />layer: Daily Flow x i . oo = <br />�150 gpd x1.00sq. ft./gpdsq. ft. <br />2. Select width of rock layer (10 feet or less) = ID ft, <br />3. Length of rock layer = Area + Width = <br />.-7c-,e5!> sq. ft. + 10 ft._ I � ft. <br />E. ROCK VOLUME <br />1. Multiplk area by rock depth to get cubic feet of rock, <br />Tsq. ft. x I ft. _ �O cu. ft. <br />2.. Divide cu. ft. by 27 cu. ft./cu. yd. to get cubic yards; <br />J L cu. ft. + 27 = 23 cu. yd. <br />3. Multiply cubic yards by 1.4 to get weight of rock in tons; <br />2 -'-) cu. yd. x 1.4 ton/ cu. yd. _ Z� tons. <br />F. ADSORPTION WIDTH <br />1. Percolation rate in top 12 inches of soil is 74 mpi <br />2. Select allowable soil loading rate from table on page E-; <br />n, gpd/ft2 <br />3. Calculate adsorption width ratio by dividing rock layer <br />loading rate of 1.20 gpd/ft' by dllowable soil loading rate; <br />1.20 gpd/ft'+,2 gpd/ft2- 24D <br />Check. ►' slue on gage E-16. <br />4. Multiply adsorption th ratio by rock layer width to get <br />required adsorption width; <br />2.4 x/ 0 ft = _ft <br />Emmawd Seance Amn w a.w., pa day <br />cmd> <br />Pimmbw <br />or <br />7) pe 1 <br />7ypc if <br />7) pe In <br />7jp <br />Bedroms <br />1 V <br />2 <br />300 <br />22$ <br />180 <br />3 <br />.S: <br />300 <br />218 <br />• <br />600 <br />375 <br />236 <br />f an <br />S <br />730 <br />430 <br />294 <br />;.. <br />6 <br />900 <br />323 <br />332 <br />y� �,an <br />L <br />7 <br />1050 <br />600 <br />370 <br />II <br />to <br />1200 <br />673 <br />408 <br />.err <br />Sop4k T"h CapcWe% in pd . <br />Iurra�i+br <br />= dt*ra1 <br />2 r i.r <br />730 <br />1123 <br />3 r a <br />100D <br />13M <br />4.6 <br />t3w <br />n50 <br />xW <br />3000 <br />F• a_ 1'V <br />!•/•I•I•/•/•I•/•I•!•I•I•/•I•! <br />S10 (t <br />f-- Lensttl <br />Abiorptbn Width SIzing Table <br />RM <br />i 1WMu_ pr <br />IeW pm) <br />Sad Teatwe <br />C4110a <br />PW dar Der <br />r1ere root <br />Awe or <br />A Ww �� <br />a LM110�►ek yw <br />paw►11M 0.1 <br />Carr Sand <br />0.105 <br />sand <br />1.20 <br />1.00 <br />0.1 r S " <br />I- Seed •• <br />0.60 <br />LW <br />61e 13 <br />Seelytaew tare <br />0.79 <br />I S2 <br />161030 <br />0.dD <br />2m <br />31 a a3 <br />sot La <br />0.30 <br />I.40 <br />46 b do <br />tare <br />OAS <br />267 <br />60 a 120 <br />0.26 <br />SAID ' <br />120'•• <br />
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