03-23-1992 Council Packet - Laserfiche WebLink

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HOW DOBS HT STSTSM WORJC7 8BPTIC XAmCS Raw savage flows Into the septic tank where the solids separate from the liquid. Solids such as soap scum and fat float to the top and form * dcum layer. Heavier solids settle to the bottom where they are partially doeoavosed by bacteria. The non-decomposed solids remain as the bottom sludge layer. The solids which are trapped in the septic tank must be removed by pumping before they build up to a level where they will wash out into the soil treatment system and plug the soil pores. The septic tsnk should bo watertight, corrosion proof, and constructed according to standard criteria. A shallow tank with adequate access is easy to maintain, and c*<|Blces only periodic Inspection and pumping of solids approximately'once every two to throe years. The tank cover or manhole access should be opened when the tank is pusiped out so that baffles can be checked and replaced If necessary, and so that the solids can be effectively broken op and pumped out. Inaptccion Inimt 3 • LUCC£ Outlet DRAnriXLO The septic tank effluent la discharged into i treatment area cornmonly known as e dralnfialde This may consist of rock-lln id tranchasr or In soma cases an elevated filter system or -mound-p distributing the llqcld affluent over a large area. The llqu.d slwly flltera through the soil back into tie water table. Thla action cleanses the effluent of bacteria and notrientsp leaving pure groundwater for your continued use. CMB AMD rKBDXMQ OF TOOR SKPTIC MTSTBi Addltlvee should not be used# since they are of no benefit and some may do great harm. Additives that cause the accumulated sludge or acum in the tank to increase in volume will result in these materials being flushed out into the dralafled# plugging soil pores. Other addltlvee# particularly degreaaera# may be carcinogens (cancer- caualng) or suspected carcinogens that flow directly into the groundwater along with the treated savage. Pon*t deposit coffne grounds# cooking fats and grease, wet-strength towels# disposable diapers# facial tisues# cigarette butts, and similar non- decompoaable materials into the house sewer. These materials will not decompose which may plug sewer pipes and will cause a rapid accumulation of solids in the septic tank. When your septic tank la cleaned# you must remove the manhole cover or the tank cover to facilitate cleaning and to be that all solids have been pumped out. A septic tank cannot be cleaned adequate 1y b^ pumping out 1iquids through ^ 4-inch Inspection pipe. Thi? process usually results in the retraining scum layer plugging the outlet baffle. So be sure that the tank is open when you have It cleaned. At this time* the baffles also can be inspected and replaced if necessary. you must use a garbage disposal, you will need to remove septic tank solids every year or more often. Ground garbage tends to remain suspended and frequently will find its way out of the septic tank and clog the soil treatment system. Each septic system has a limited capacity. When this capacity la reached or exceeded, the system will have problems accepting as much sewage as ycu want to discharge into it. Visible ex’idenco of a system about to reach its limits may be subtler the drainfleld may beco^ne wet and mushyr there may be signs of sewage standing in the tank inspection piper basement drains may slow down noticeably (thla might also indicate merely a clogged pipe between the house and the tanks). When the system approaches its capacity# be extra conservative with your use of water. Each gallon of water that flows into the drain must be treated and disposed. Repair all leaky plumbing fixtures and# if posclble# reduce the amount of water used for bathing# doing laundry# and flushing the toilet. Water softener recharge wastes will not harm septic tank action# but the additional waste must be treated and disposed of by the soil treatment system. If the softener wastewater creates an overload to the sewage system# the wastewater can bo discharged to the ground surface# since it contains no pathogens. The wastewater should be discharged in a location where it does not cause a nuisance or damage valuable vegetation. Laundry wastes on the other hand must be rur into the septic tanks since soap or detergent scums will quickly clog the soil pores# causing failure. Sever go down into a septic tank. The gases present nay poison or asphyxiate yoo. Only trained profeasiooala ehonld enter a septic tank.