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JL <br /> SC(1�r�iQ✓EVCG elAAT <br /> Calculation <br /> Treatment Plant Capacity <br /> . Desi-n Capacity! <br /> 207 Residences - R-1 @ 3.01 people/un;t * 623 <br /> 104 Residences - R-3 @ 2.4 people/utit * 250 <br /> �3 <br /> 873 people @ 100 gallons/day 87,300 gallons <br /> Design Capacity: DryWells <br /> Circumference of a circle = 2pr <br /> Radius 1/2'Diametor <br /> Drywell = 5'6" in Diameter (66") <br /> Radius ='33" <br /> 3.1416 x 33" = 103.67 " x 2 = 207.34" divided by 12" 17.27' in circumference/ <br /> hole x 23' deep = 397.21 S9,UARE FELT OF WALL SURFACE <br /> Area of a Circle = pr2 <br /> Drywell = 5'6" in diameter (66 ") <br /> Radius = 33" <br /> 33" x 33" = 1089 square inches x 3.1416 = 3421.20 square inches/hole divided <br /> by 144 = 23.75 SQUARE FEET OF SURFACE <br /> Total Surface Footage Per Hole = 23.75 + 397.21 = 420.96 <br /> 420.96 square feet/holo x 4 Gallons/Day/Square Foot of Surface = 1683.84 Gallons/ <br /> Da Hole allowable to handle peak development load. ** <br /> 87,300 Gallons/Day requirement divided by 1683.84 Gallons/Day/Hole <br /> Holes needed to handle maximum subdivision load. <br /> 52 Holes x 25 = 13 additional hales for safety factor = 6 holes <br /> This would allow holes to be shut off for dry-out at least 2.4 times per year, <br /> for periods of 30 days. <br /> * San Joaquin County Building Department Statistics <br /> ** Kleinfelder & Associates soils Report for Morada West development. <br />