Agenda - Council - 02/28/1984 - Laserfiche WebLink

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- 22 - 2. The design of the treatment/disposal facility shall be on the basis of one hundred twenty-five (125) gallons of disposal per bedroom per day. 3. Infiltration or exfiltration shall not exceed one hundred (100) gallons per inch of pipe di~,~ter per mile per day. 4. Cleanouts, brought flush with or above finished grade, shall be provided wherever a common sewer joins an individual building sewer or piping from an individual sewage tank, or every one hundred (100) feet, whichever is less, unless manhole access is provided. I I I I I I I 5. There shall be no physical connection between sewers and water supply systems. Sewers shall be set back from water supply systems and piping as required for building sewers (See Chapter 150.014B herein). Where it is not possible to obtain proper separation distances, the sewer connections shall be watertight and pressure tested as outlined in Chapter 150.014B. 6. Pump stations shall be watertight and h~ve manholes flush with or above finished grade for cleaning and maintenance. 7. Manhole covers shall be so constructed as to prevent unauthorized entry. 8. Pomps and pump stations shall be sized to handle peak flows and an alarm system shall be provided for all p~m~ lng stations to warn of pump failure, overflow, or other malfunction. MAINTENANCE A contract for the maintenance of all co,m~n drainfields, sewage tanks, pumps, p,~p stations, sewers, and all individual tsnks connected to a commn drainfield shall be maintained by the city and all persons using the system. Such contracts shall be made jointly and shall continue for the life of the system. I I I Sewage flow shall be monitored continuously, recorded monthly, and reported annually to the council. Metering can be accomplished by installation of a water meter to moasure the flow to all p,~ping fixtures except the outside sillcocks or, if a sewage pump is used, installation of a pump cycle counter on the sewage pump. Subd. 3 SEEPAGE PITS I I I I Seepage pits may be used for disposal of sewage effluent in the Urban Service Area when such use is indicated by favorable conditions of soil, ground water level, or topography, and where such use does not reduce the safety of surrounding ground water supplies. The pit excavation shall terminate at least three (3) feet above the highest known or calculated ground water table. When two (2) or more seepage pits are used, a distribution box constructed in accordance with §150.014D shall be used if the inlet inverts of the seepage pits have no more than one (1) foot difference in elevation. If the difference in elevation between the inlet inverts is greater than one (1) foot, the seepage pits shall be connected in series.