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SEPTIC SYStE�I OWNER�S GUIDE <br /> I � � � � ' � � <br /> l <br /> Tank Maintenance <br /> Frequency of Pumping �. ���`a�� <br /> ,�.:,�;.<,_ <br /> The septic tank MUST be periodically cleaned(pumped) to remove fioating �ti;e+�ery.. <br /> scum and sludge that accumulate. If either floating scum or sludge is allowed to ��'�.�j�,�"` <br /> enter the soil treatment system(drainfield) it will cause expensive and often irrepa- � � ^�•` � <br /> rable damage.How often to clean a septic tank depends on its size,use,and operat- ��`�k�^�,��c�c_ <br /> ::�, ��. <br /> ing condition. arpenslrr <br /> , ,��� �� <br /> In new home lnstallotJons, the tank should be cleaned after 6-12 months of y`�•:�p1�.�: . <br /> �...;_.:.,��, a.._ <br /> use as a precautionary measure to ensure good bacterial activity and proper func- 'a� <br /> tioning. In new homes, wastewater from painting,varnishing, staining, and other ��' ���� <br /> ��. t��.r.�:Y.._� <br /> _'+q '♦ <br /> construction functions can reduce the initial levels of bacterial activity causing ~� `"` fO <br /> ,,�;�"..:,_..,,�. . <br /> ��-;��•..: <br /> damage to the soil treatment system. lf finishing work is still being completed, the ���.,,:"-�° <br /> tank should be cleaned before it is used for sewage. `j��='NY' <br /> �`� ,�.-.. . <br /> Once a system is known to be operating properfy,the worksheet on page 18 can <br /> be used as a guideline for cleaning frequency. Take into consideration both the <br /> calculated guideline results (in months)and the condition of the tank(amount of <br /> scum and sludge)at the last cleaning. Homeowners should be present when the <br /> cleaning is done or be sure to get this information from the cleaning contractor. <br /> A typical household will calculate a cleaning frequency(using the guideline <br /> worksheet)of 18-30 months. If your final result is very different from this,recheck <br /> � your responses and the math. If your result is still very different, contact a qualified <br /> • septic system professional for additional advice. <br /> If the result suggests very frequent cleaning (less than every 12 months), the <br /> system may need to be upgraded and/or use habits changed.Use the space pro- <br /> vided in the folder accompanying this guide to record the cleaning dates. <br /> _ .,_ - ��:� <br /> . . <br /> .r.:�f � +�,_� <<..: • � <br /> ��y°�: .r,� n�o�is twiee� <br /> Fk �'ls �sti� F-���W�f. � <br /> Proper Cleaning Method <br /> PUMP/ <br /> Cleaning, or 'pumping' as it's often called, must be done by a licensed and FLUSH/ <br /> bonded professional. Proper cleaning will remove ALL scum, sludge, and liquid from BACKFLUSH <br /> the septic tank(s). This requires pumping, flushing, and backflushing liquid contents <br /> back and forth between the truck's tank and the septic tank through the manhole <br /> several times. This process breaks up all scum and sludge in the tank, allowing a�l <br /> solids to be removed by the truck's suction line. Floating scum left in the tank after <br /> ' cleaning may plug baffles or allow solids to enter the drainfield when the tank refills. <br /> Cleaning will leave a black film on the tank walls and a small amount of liquid on the tank <br /> floor. This contains millions of bacteria to help get the tank working following the cleaning. <br /> ' When the tank is cleaned, ask che contractor to make sure the baffles are in place and <br /> functioning properly. Cleaning a tank through the inspection pipes will often leave solids in <br /> the tank and possibly damage baffles. Insist that the tank be cleaned through the manhole <br /> if the cank has one. Ask beforehand if the tank will be cleaned [hrough the manhole, and if it <br /> ' w�ll not, find a differenc contractor. It may cost slightly more to have the tank cleaned <br /> through the manhole, but this will save money in the long run. <br /> Afcer cleaning, it is not necessary to add a startec Bacteria present in wastewater and in <br /> , the tank will do [he job. <br /> n <br /> ' <br />