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PENCIL <br />MARKS <br />i <br />.__ <br />MANHOLE <br />INLET SCUM " Js� OUTLET <br />�='ti;OUTLET LEVEL <br />iI <br />_ — SCUM CLEAR SPACE _= J� ;; CLEAN OUT TANK WHEN <br />— ' — — - - "- •='`= "A" IS 3" OR LESS OR <br />-- — - -- "-- —B "B" 15 12" OR LESS <br />BLACK COLOR <br />SLUDGE DISTINGUISHES SLUDGE <br />LAYER FROM LIQUID <br />n <br />r <br />y/ w <br />MEASURE SCUM AND SLUDGE ACCUMULATIONS <br />IN THE SEPTIC TANK <br />