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Commercial Septic Requirements <br /># Person Gallon per <br />Person <br />Total Gallon <br />Per Person <br />20 <br />15 300 <br />0 <br />0 <br />0 <br />0 <br />0 <br />0 <br />0 <br />0 <br />0 <br />Average Daily Flow (ADF) <br />300 <br />Tank Capacity BTC <br />1,200 <br />LA Soil Factor <br />0.250 <br />Filter Bed Soil Factor <br />4.00 <br />Leach Line Requirement (ft) <br />375 <br />Filter Bed Requirement (ft2) <br />1,500 <br />LA Soil Factor <br />Clay/Peat 0.250 <br />Silt/Sandy Clay Loam 0.225 <br />Sand/Sandy Loam 0.200 <br />Filter Bed Soil Factor <br />Sandy Soil 3 <br />Clay Soil 4 <br />Seepage Pit Equivalents <br />36" 49' L/L <br />42" 57' L/L <br />48" 66' L/L <br />60" 84' L/L <br />100% replacement / Installation # Of Lines/Pits Leach Lines/ Pits Total Ratio <br />Leach Lines (20 %) 75 2 56 112 29.79% <br />Pits (80%) 300 4 66 264 70.21% <br />376 <br />50 % replacement / Installation <br />Leach Lines (20 %) 37.5 <br />Pits (80 %) 150 <br />