Laserfiche WebLink
San Joaquin County Commercial <br /> Septic System Calculator <br /> ADF: Average Daily Flow based on estimated use based on section 6.1.15 (2003,Onsite Wastewater Sewage Standards). <br /> BTC: Base tank capacity,minimum of 1200 gallons(2003,Onsite Wastewater Sewage Standards). <br /> CTC: Calculated tank capacity,the sum of BTC and ADF.When over 1500 gallons per day ADF,calculated tank capacity,maybe 75%of the ADF plus 1125 gals(2003,Onsite Wastewater Sewage Standards). <br /> LL:Leach line <br /> See equations below <br /> For Leach Lines Enter <br /> Enter soil factor 0.20 0.20 for sand or sandy loam,0.225 for silt and/or sandy clay loam,0.25 for clay and/or peat. <br /> Enter ADF(gals) 90 <br /> Filter Bed Multiplier 3 Enter three(3)for sandy soils and four(4)for clayey soils. <br /> Enter one desired dimension of bed width(ft) 15.5 <br /> Result Calculation <br /> Minimum CTC(gals) 1,290 Since ADF is less than 1500 gpd,ADF+1200=CTC,90+ 1200=1290 gals <br /> Total calculated length of LL(ft) 258 (BTC+ADF)`SF=LL,(1200+90)•0.2=258 feet total LL requied <br /> Calculated area of filter bed(SF) 774 258 ft x 3 ft(filter bed factor)=774 SIF �,[7 „/ i5 Aopck 10 rp-p <br /> Increased Filter Bed Square Footage 338 774 sf 12.3(for an additional 42"thick bed section) "tel J'r r <br /> Resulting configuration: 15.5 ft x 22 ft filter bed <br /> /� �i �✓e 610� size <br /> Date: January 23, 2009 <br /> Project No:LGS080550 <br /> Neil O. Anderson Associates, Inc. <br />