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COMPARTMENTED SEPTIC TANK <br />SEPTIC TANKS LARGER THAN 3000 GALLONS SAND FABRICATED AS A SINGLE UNIT <br />SHALL BE DIVIDi) INTO TWO OR MORE COMPARTMENTS. <br />WHEN A SEPTIC TANK IS DIVIDED INTO TWO COMPARTMENTS, NOT LESS THAN <br />ONE-HALF NOR MORE THAN TWO-THIRDS (* THE TOTAL VOLUME SHALL BE IN THE <br />FIRST COMPARTMENT. <br />WHEN A SEPTIC TANK IS DIVIDED INTO THREE OR MORE; COMPARTMENTS, ONE-HALF <br />OF THE TOTAL VOLUME SHALL BE IN THE FIRST COMPAR171F.NT AND THE OTHER <br />HALF EQUALLY DIVIDED IN THE OTHER COMPARTMENTS. <br />CONNECTIONS BETWEEN COMPARTMENTS SHALL BE BAFFLED TO AS TO EFFECTIVELY <br />RETAIN SCUM AND SLUDGE. ADEQUATE VENTING SHALL BE PROVIDED BETWEEN <br />COMPARTMENTS BY BAFFLES OR BY AN OPENING OF AT LEAST SO SQUARE INCHES <br />NEAR THE TOP OF THE COMPARTMENT WALL. <br />ADEQUATE ACCESS TO EACH COMPARTMENT SHALL BE PROVIDED BY ONE OR MORE <br />MANHOLES, AT LEAST 20 INCHES LEAST DIMENSION, AND LOCATED WITHIN SIX <br />FEET OF ALL WALLS OF THE TANK. THE MANHOLE SHALL EXTEND THROUGH THE <br />COVER TO A POINT WITHIN 12 INCHES BUT NO CLOSER THAN SIS{ INCHES BELOW <br />FINISHED GRADE. THE MANHOLF. COVER SHAL1, BE COVF.RF:) WITH AT LEAST 6 <br />INCHES OF FARTH . <br />WHEN MULTIPLE TANKS ARE USED TO OBTAIN THE REQUIRED LIQUID VOLUME, THE <br />TANKS SHALL BE CONNECTED IN SERIES. NO MORE THAN FOUR TANKS IN SERIES <br />CAN BE USED TO OBTAIN THE REQUIRED 1.101,111) VOLUME. THE FIRST TANK SHALL <br />BE NO SMALLER THAN ANY SUBSEQUENT TANKS IN THE SERIES. <br />4 <br />