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i <br /> OFFICE SYSTEM <br /> Day workers at schools or offices no food cafeteria - 30 gal . / <br /> per worker per shift. <br /> 8 workers X 30 gal . = 240 gal . ADF <br /> 1200 gal . + 240 gal . ADF = 1440 CTC <br /> Use 1500 gallon septic tank <br /> 1500 gal . CTC X .250 = 375' leach line or equivalent <br /> Smallest land area needed; two 50' leach lines and four 36" pits <br /> Largest land area needed; three 55' leach line and three 36" pits <br /> COMBINED DRAIN FIELD FOR BOTH SYSTEMS <br /> A combined drain field using 10 drywalls 48" in diameter may be <br /> the best solution to future expansion needs. A valving system <br /> which would allow rotation of the drain field would have to be <br /> incorporated. <br /> Please see the attached drawings for each possibility. <br />