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Design Flow and Soil Worksheet <br /> 1. AVERAGE DESIGN FLOW: ...,_.... .." -- <br /> A. Estimated Flow(GPD): 600 <br /> or Measured Flow(GPD):flow times safety factor gpd X = gpd <br /> Design Flow: 600 Gallons Per Day(GPD) <br /> B.Septic Tank capacity: 2250 Gallons <br /> •Note:If a garbage disposal unit or other appliance with garbage grinding abilities <br /> Number of Septic Tanks or Compartments: 0 (i.e.dishwashers)is anticipated or installed,or if sewage is pumped to the septic <br /> tank,the septic tank capacity must be increased by 50%and multiple tanks or <br /> compartments must be used,plus an effluent screen with an alarm. <br /> Effluent Screen Et Alarm? Yes <br /> Table I-Design Flow(Gallons Per Day) Table B-Septic Tank Capacity <br /> Number of Bedrooms Classification of Dwelling Number of Bedrooms Septic Tank Liquid Minimum Capacities Capacity with Garbage Disposal and/or <br /> I II III IV (Gallons) Sewage Pumped to Tank* <br /> 2 or less 300 225 180 3 or less 1,000 1,500 <br /> 3 450 300 218 4 ors 1,500 2,250 <br /> 4 600 375 256 6 or 7 2,000 3,000 <br /> 5 750 450 294 8 or 2,500 3,750 <br /> 6 900 525 332 <br /> 'Flows for Classification IV dwellings are 60 percent of the values as determined for Classification I,II or III systems. <br /> 2. SITE EVALUATION: <br /> A.Depth to Limiting Layer: 18 inches 1.5 ft Table III <br /> B.Maximum Depth of system: -18 inches -1.5 ft Treatment Levels of BOD BOD(mg/L) <br /> (a negative number means a mound system is required) Level C 125 <br /> C. Type of Soil Treatment and Dispersal Area: Mound Level B 25 <br /> D.Type of Distribution: Level Pressure Distribution Level A 15 <br /> E. Landscape Position: on countour <br /> F. Soil Texture Group Number: 8 Rise Run <br /> G.Percent Land Slope: 3.0 % Slope = x 100= <br /> 3. SOIL LOADING RATES:Use either A.or B.below <br /> A. 7080 Table IX B. 7080 Table IXa Texture Group <br /> DETAILED SOIL DESCRIPTIONS(SOIL PIT REQUIRED) <br /> PERCOLATION TEST SIZING LOADING RATE(GPD/ftx) Soil Texture Group# <br /> Texture Loam <br /> Coarse Sand 1 <br /> Faster than 0.1' 0.00 Medium Sand 2 <br /> Texture Group 8 0.1 to 5' 1.20 Fine Sand 3 <br /> 0.1 to 5(soil texture groups 3 E:5) 0.60 Coarse Loamy Sand 4 <br /> Medium Loamy Sand 4 <br /> Structure Granular 6 to 15 0.78 Fine Loamy Sand 5 <br /> 16 to 30 0.60 Very Fine Loamy Sand 5 <br /> 31 to 45 0.50 Coarse Sandy Loam 6 <br /> Grade Weak 46 to 60 0.45 Medium Sandy Loam 6 <br /> 61-120 0.24 Fine Sandy Loam 7 <br /> Slower than 120 0.00 Very Fine Sandy Loam 7 <br /> Consistence Loose 'Rapidly permeable soils:see 7080.2260 Loam 8 <br /> Silt Loam 9 <br /> Clay Loam 10 <br /> Select Soil Slowest measured percolation rate: 30.0 Silty Clay Loam 10 <br /> Loading Rate: 0.60 Sandy Clay Loam 10 <br /> Silty Clay 11 <br /> Select Soil Loading Rate: 0.60 <br /> Sandy Clay 11 <br /> Clay 11 <br /> C. Design Loading Rate: 0.60 <br /> 4. ORGANIC LOADING(if pretreatment is being used) <br /> Organic Loading=Design Flow X Estimated BOD in mg/L in the effluent X 8.35 s 1,000,000(See Table III) <br /> gpd X mg/L X 8.35 a 1,000,000 = lbs BOD <br /> I hereby certify that I have completed this work in accordance with all applicable ordinances,rules and laws. <br /> Joseph J Olson , ____,--------------- <br /> 810 <br /> 810 11/24/2008 <br /> (Designer) (Signature) (License#) (Date) <br /> , <br />