1995-007075 - replacement system

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-INDIVIDUAL SEWAGE TREATMENT SYSTEM WORKSHEET FLOW Estimated Sewage Flows in Gallons per day A. Estimated I-15-'0 gpd (1 Pd) ( measured --- x 1.5= gpd Number SEPTIC TANK VOLUME of Type I Type II Type III Type B. a-/00 O gallons Bedrooms IV 2 300 225 180 SOILS(Site evaluation data) 3 450 300 218 60% 4 600 375 256 of the C. Depth to restricting layer= CA" 4- -9, feet 5 750 450 294 valutsin D. Maximum depth of system C-3 ft= a-0-r 3.0 ' feet 6 900 525 332 Type 1. E. Percolation rate 10•ete MPI 7 1050 600 370 iu F. Soil Sizing Factor /.C.,-7sq ft/gpd(See table 3) i>-Z '"i 8 1200 675 408 columns TRENCH BOTTOM AREA H. For trenches with 6 inches of rock below the pipe: Septic Tank Capacities,in gallons A x F= x = sq ft of bottom area Number of Minimum Liquid Liquid capacity with Bedrooms Capacity garbage disposal I. For trenches with 12 inches of rock below the pipe: AxFx0.8= x x0.8= sq ft of bottom arca 225 3 or as 50 15(00 J. For trenches with 18 inches of rock below the pipe: 4 or 6 1500 2250 A x F x 0.66= x x 0.66= sq ft of bottom area 7,8 or 9 2000 3000 over 9 K. For trenches with 24 inches of rock below the pipe: AxFx0.6= x x0.6= sq ft of bottom area BED BOTTOM AREA L. For seepage beds with 6 or 12 inches of rock below the pipe; 1.5 x A x F= 1.5 x 4S0 x/.Id) 1 Z)sq ft of bottom area Soil Characteristics and Required Areas ,7SL1ZijZO L.'s' -Sl rir., for Sewage Treatment ROCK VOLUME IN CU FTS Percolation Rate in Square Gallons M. Rock depth below distribution pipe plus 0.5 foot times bottom area: Minutes pa Inch Soil Texture feet per per day per M=Rock depth(ft)4;fi inches x Area (H,I,J,L or K) (MPI) galloday n per square foot ( /.0 ft+0. ft)x 1►a9 = IHt,o cu ft Faster than 0.1• Coarse Sand -- ROCK VOLUME IN CU YDS 0.1 toy Sand 0.83 1.20 6tFine sand•• 1.67 0.60 N. Volume in cu ft divided by 27 to to is sandy roam I„2?� 0.79 M+27=cu ds*,./+27= .� cu ds -16 to 3Q_ Loam.Gu,Z_ 0.60 Y /7Hl y y 31 to 45 SiltLoam 2.00 030 ROCK WEIGHT 46 to 60 Clay Loam 2.20 0.45 Slower than 60••• Clay ---- 0. Cubic yards times 1.4=tons Nx1.4=tons .4y x 1.4= 9L tons DISTRIBUTION (Check one based on slope) ? -WrZ'-r.-) , f74.11. •11.7. r:y.lr".1r1, ti -1- \/'Bed(less than 6%slope) ........................60.000.0%.%.-.%.ti•ti.......,.....ti•ti.............5r rr•r .r.e.r•r•rr•r•e.e.r• 2 inch Cover .er..r.e.e. •r•r•r•r;r•r• Trenches rtiftirtirtir~' 'tir~r r4rtif4 ,� „ ftiftif.fti• '...*f:f: \ 1 2- "P1A. Drop boxes(any slope) ti•ti.ti•ti •.•4••.•5 Distribution box(level to slightly sloping) r•r•r•" •r•r•r•r• *inch Pipe ti•.0..% •••ti•ti,•5 r r r•r• r•r•.%.s tK S L S.•ti,••.•ti•5 1M.e.e.e• ...... e.r• TRENCH LENGTH ▪.0.010%.%. ti••.••.06".., r.e.r•r•r•r•r•e.r•r•r.e.e.e• )a P. Select trench width= • ft ti•ti•ti•ti•ti•ti ....'ti•ti••.•1.••••5 'r•r•r•r•r.r•r•r•r•e.o.o.e.r• Q. Divide bottom area by trench width: (H,I,J,or K) P= e▪.r.e.r.r.r.r.e.r.r.r.e.r.e. r•e.r•e.r•e.r.r•e.o e.."•e.e. ti•ti•ti••.•ti•ti•ti•%"..•%...• ..• 6-24 inch lineal feet fti;•r•r•e.o.r.e.e.o•e.o.r•e. ti•�•ti•ti•ti•ti•�•ti•ti•ti•ti.ti4 Rock Below the Pip( Pt -+ = lineal feet rti•ti•ti•+•+•ti•t•ti•ti•ti•�•t•ti•5 .r.r.r.r.r.r.r.r.r.r.r.r.r• LAWN AREA e.e.e.e.•ti•5•ti••.••.••.•ti•ti•5 r•r•r•r•r•r•r•r•r•r•r•r•J•r• r�ftit~l�rtilyf~t~rtir~r~l r~rti R. Select trench spacing,center to center= - feet-7,1;,:-.), ~''-'~''''~''''''~'''''-'''' S. Multiply trench spacing by lineal feet R x Q=sq ft of lawn area I'l x(..c.) = 1140 sq ft LAYOUT(Use other side) 1.Select an appropriate scale;one square= feet. 2.Show pertinent property boundaries,right-of-way,easements. 3.Show location of house,garage,driveway,and all other improvements, existing or proposed 4.Show location and layout of sewage treatment system. 5.Show location of water supplv .'.',ll. A fimoncinn all cnt harks anri .. -,-1r I-I,'T. (tIstnp;t.