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PENCIL <br />MARKS <br />INLET �` .s�SCUM • t il • <br />-L OUTLET <br />y,. r -'OUTLET LEVEL m �% <br />.SCUM CLEAR SPACE <br />CLEAN OUT TANK WHEN <br />• - -- — — —= - - — --- _ _ `�=• — —' IS 3" OR LESS OR <br />"6" 15 12" OR LESS <br />BLACK CO OR <br />SLUDGE DIST04CAMSHES SLUDGE <br />LAYER FROM LQUID <br />- Yi <br />MEASURE SCUM ANp SLUDGE ACCUMULATIONS <br />IN THE SEPTIC TANK <br />