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HOUSE <br />SUMP <br />PUMP <br />HOUSE <br />12" EARTH <br />COVER <br />SEPTIC <br />TANK <br />L HOUSE SEWER <br />MIN. GRADE I IN 8 <br />MAX. GRADE I" IN <br />AT LEAST <br />10 FEET <br />a ,. <br />i � � <br />SEWAGE <br />Eel <br />GRASS COVER <br />10- <br />DROP BOXES <br />OUTLET SEWER <br />MIN. GRADE I" IN 8 FEET <br />NO MAXIMUM GRADE <br />FEET —`- <br />4 FEET 1 <br />4" DISTRIBUTION <br />PI PES <br />DROP <br />BOX - <br />4 WATER —TIGHT <br />PIPES <br />TREATMENT SYSTr-`l <br />AT LEAST 4 1/2' <br />OF UNDISTURBED <br />`EARTH FOR <br />CONSTRUCTION <br />CONVENIENCE 1 <br />WITH DfiOP BOXES DETAIL 7 <br />1 <br />I <br />I <br />I II I <br />_4L <br />EXTRA TRENCHES;) <br />CAN BE <br />(ADDED I F <br />NECESSARY <br />�� II <br />WITH DfiOP BOXES DETAIL 7 <br />