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Design Flow and Soil Worksheet u }r .1. AVERAGE DESIGN FLOW: �.. A. Estimated Flow(GPD): 750 or Measured Flow(GPO):flow times safety factor god X = gPd Design Flow: 750 Gallons Per Day(GPD) B.Septic Tank capacity: 2250 Gallons 'Note:If a garbage disposal unit or other appliance with garbage grinding abilities Number of Septic Tanks or Compartments: 0 (i.e.dishwashers)is anticipated or installed,or if sewage is pumped to the septic tank,the septic tank capacity must be increased by 50%and multiple tanks or compartments must be used,plus an effluent screen with an alarm. Effluent Screen&Alarm? Yes Table I-Design Flow(Gallons Per Day) Table II-Septic Tank Capacity Number of Bedrooms Classification of Dwelling Number of Bedrooms Septic Tank Liquid Minimum Capacities Capacity with Garbage Disposal and/or I II III IV (Gallons) Sewage Pumped to Tank` 2 orless 300 225 180 3 or less 1,000 1,500 3 450 300 218 • 4 or 5 1,500 2,250 4 600 375 256 • 6 or 7 2,001) 3,000 5 750 450 294 8 or 9 2,500 3,750 6 900 525 332 ' 'Flows for Classification IV dwellings are 60 percent of the values as determined for Classification I,11 or III systems. 2. SITE EVALUATION: A.Depth to Limiting Layer: 16 inches 1.3 ft Table Ill B.Maximum Depth of system: -20 inches -1.7 ft Treatment Levels of BOD BOD(mg/L) (a negative number means a mound system is required) Level C 125 C.Type of Soil Treatment and Dispersal Area: Mound Level 6 25 D.Type of Distribution: Level Pressure Distribution Level A 15 E. Landscape Position: on contour F. Soil Texture Group Number: 8 Rise Run G.Percent Land Slope: 7.0 % Slope = x 100= 3. SOIL LOADING RATES:Use either A.or B.below A. 7080 Table IX B. 7080 Table IXa DETAILED SOIL DESCRIPTIONS(SOIL PET REQUIRED) Texture Group PERCOLATION TEST SIZING LOADING RATE(GPD/ft2) Soil Texture Group# Texture Loam Coarse Sand 1 Faster than 0.1' 0.00 Medium Sand 2 Texture Group g 0.1 to 5' 1.20 Fine Sand 3 0.1 to 5(soil texture groups 3 Et 5) 0.60 Coarse Loamy Sand 4 Medium Loamy Sand 4 Structure Platy6 to 15 0.78 Fine Loamy Sand 5 16 to 30 0.60 Very Fine Loamy Sand 5 31 to 45 0.5o Coarse Sandy Loam 6 Grade Weak 46 to 60 0.45 Medium Sandy Loam 6 61-120 0.24 Fine Sandy Loam 7 Slower than 120 0.00 Very Fine Sandy Loam 7 Consistence Loose 'Rapidly permeable soils:see 7080.2260 Loam 8 Silt Loam 9 Clay Loam 10 Select Soil Slowest measured percolation rate: 20.0 Silty Clay Loam 10 0.60 Loading Rate: Sandy Clay Loam 10 Silty Clay 11 Select Soil Loading Rate: 0.60 Sandy Clay 11 Clay 11 C. Design Loading Rate: 0.60 - 4. ORGANIC LOADING(if pretreatment is being used) Organic Loading=Design Flow X Estimated BOD in mg/L in the effluent X 8.35+1,000,000(See Table III) gpd X mg/L X 8.35 1,000,000 = lbs BOD I hereby certify that I have completed this work in accordance with all applicable ordinances,rules and laws. Joseph Olson 810 11/29/2008 (Designer) / Signature) (License#) (Date)