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•, .. PENCIL <br />_ MARKS <br />20 <br />MANHOLE <br />INLET;~_ SCUM OUTLET <br />i , a '�`.�� Ski- ^ ;__, � ,- ; 's - , •�a!,�`Yi ' � <br />'= • '!'OUTLET LEVF� <br />•-. •.fir._ � • •.; ::. � • . i; r <br />�-- PACE P <br />SCUM CLEAR SA - - <br />-- •- - -- -; �� �r CLEAN OUT TANK WHEN: <br />IS 3" OR LESS OR <br />- ---- -==---- - - y "13" IS 12" OR LESS <br />• BLACK COLOR <br />V ' • SLUDGE_ - D15"tINGUISHES SLUDGE <br />`•,1 .j _ _ • ... _ < LAYER FROM LIQUID <br />' ' { .a,, •'•+�5,-'+rk.i3i..s_ t.. _�,�v.�iRi3i:!: •, i� <br />MEASURE SCUM AND SLUDGE ACCUMULATIONS <br />IN THE SEPTIC TANK <br />ii <br />