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SEPTIC SYST'r�''d INFORMP.TION S�ET <br /> W�-�.�T IS IN MY BACK yARD A_'1D EOW DOES IT WORK? <br /> biost houses built in Oror_o after 1960 where city sewer is not <br /> available have two septic tanks, or_e or more distribution boxes anc <br /> a nurtber of drainfield trenches . In the septic tan.'•cs, heavy sewagE <br /> solids will settle to tne botton and be decomposed by ana�robic <br /> (oxygen-=ree? bacteria action. Floating solids such as grease; <br /> fat, and soap scun will be retained inside the ta�k by baffles at <br /> the inlet and outle�. Tnis ensures that the eTfluent entering th� <br /> drainfield is relatively free of solids, which tend to cZog u� cla: <br /> soils . <br /> Many houses built a�ter 1975 have rr,ound drainfields . Tnes <br /> systems iunction on �:^.e sa�.e n'-'inciples as trench drainfield <br /> except that the trench bed is installed above �he original groun <br /> to provide a separation fron th� seasonally high water ta.ble an <br /> allow the system to fur.ction adecnzately. <br /> T�,�IvCH SYSTEM <br /> I � _ � -- <br /> � � { — 1 <br /> I -�-, e -. � e �a � � e —:� c o +� <br /> � N• � a v `. �: . � , . � i s �; � . a 7 J s C <br /> r•'' � ,L ion box` , '� � o r— <br /> solids c.is..rib �ainiie1ds <br /> floating � <br /> siudae <br /> �./ <br /> b10Wi il SYSTEti? <br /> . . n �r �f. �f" Y'�^� '%�_'/• . <br /> �.rir• <br /> • � , <br /> pur,r�ir.g cha;,iner <br /> ;.., ,..,�, �•_ E�� - <br /> gpW C�1.N I NiAKE rtY SEPTIC SYSTEbi L`�T LONGER? <br /> I . Do not use your toilet or kitchen sink as a garbage ca <br /> Undigested foods and cigarette butts will nO`d snosalse) .in t <br /> septic tanks (this ir.cludes the use of garbag_ <br /> 2 . Have your tanks pumped at least once every three years (once ev� <br /> two years is necessary with garbage disoosals) . This �aill proba.� <br /> cost you $SO - $125 . If you do not specifically ask ust Put`�- t <br /> - contractor to open up your tanks, he will probably j <br /> � hose down the inspection riser and d�e oVehthe oa as�� Th tta`' <br /> � This inethod wi11 no�. effectivel u��:ng <br /> should be ooened in order to, stir the conter_ts while P �� So <br /> b=eak up the sludge and scum layers . The baftles �� . <br /> cleaned, examined, and reoaired (if necessary) at this time • <br />