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MCR ENGINEERING Proposed Septic System B Calculations <br /> 1242 Dupont Court JOB: 19-006 New Haven Elementary <br /> Manteca,CA 95336 ADDRESS: 14600 Ausin Rd,Manteca,CA 95336 <br /> (209)239-6229 BY: DB/MS <br /> FAX(209)239-8839 DATE: 3/6/2020 <br /> Total Flowrate Design Calculations <br /> Building(H) Proposed Average Daily Flowrates <br /> 'UKDesign Volume Per Person= :39^ gal/day #Staff/Room= 2 <br /> #of Rooms= 1 #Students/Room= 60 <br /> Average Flowrate Per Day <br /> Building(H) Proposed Event Daily Flowrates <br /> Building Design Volume per Hour= s ? galihour #of Hours Per Event 3 <br /> Max Flowrate Per Day= 600.0 <br /> #of Events Per Year= 15 events/yr Average Flowrate Per Day= 24.7 <br /> Design Flowrate Summary <br /> Total Max Design Flowrate Per Day= 1,220.0 <br /> Total Design Average Flowrate Per Day= 644.7 <br /> Engineered System Calculations <br /> Septic Tank-Design Calculations "Per San Joaquin County OWTS Standards <br /> Min. Base Tank Capacity= J. ': gal Calculated Tank Capacity= 1,845 gal <br /> Average Daily Flow=1 645 Igal Design Tank Capacity=1 2,500 Igal <br /> Leach Line - Engineer Calculations "Percolation Rates Per Geotechnial Engineering Report <br /> Total Max Daily Flowrate= 1,220.0 gal 10 min/in <br /> Min. Base Tank Capacity= s gal Soil Percolation Rate(P)= 3.5 gal/sf/day <br /> Req. Percolation Volume= 2,420.0 gal Req. Percolation Area= 691 sf <br /> Calculated Required Length= 173 ft Trench Width= :' - in <br /> Design Length=1 200 ft Trench Depth Below Pipe= in <br /> Tench Area/LF= 4 sf/LF <br /> "Design Requirements Per San Joaquin County OWTS Standards <br /> Page 3 of 3 <br />