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PENCIL <br /> - - - MARKS ,.... <br /> • -=y.l=_• ..' 1 -{{{"'�,, '"_may_ •� <br /> 4 rlt YII*. <br /> MANHOLE <br /> INLET r=``� SCUM �_��3's�� t" �; OUTLET <br /> ly =;,ter=;OUTLET LEVEL <br /> SCUM CLEAR SPACE _ �' ;; CLEAN OUT TANK WHEN: <br /> "A' I S 3" OR LESS OR <br /> '— — B" IS 12" OR LESS <br /> B <br /> • _ BLACK COLOR <br /> y/ DISTINGUISHES SLUDGE <br /> ,.:,..: SLUDGE LAYER FROM LIQUID <br /> n <br /> ` • �/ w <br /> MEASURE SCUM AND SLUDGE ACCUMULATIONS <br /> IN THE SEPTIC TANK <br />