Agenda - Council - 12/20/1983 - Laserfiche WebLink

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I I I I I I I I I I I I I I ! I (100) feet, whichever is less, unless manhole access is provided. 6. There shal] 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 dis- tances, the sewer connections shall be watertight and pressure tested as outlined in Chapter 150.014B. 7. Pomp stations shall be watertight and have manholes flush with or above finished grade for cleaning and maintenance. 8. Manhole covers shall be so constructed as to prevent unauthorized entry. 9. Pumps and pump stations shall be sized to handle peak flows and an alarm system shall be provided for all pumping stations to warn of pump failure, overflow, or other malfunction. I'.~ IITI'ENANCE A contract for the maintenance of all common drainfields, sewage tanks, pumps, pump stations, sewers, and all individual tanks con- nected to a common 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. tdETERING 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 measure the flow to all pumping 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 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 exca- vation shall terminate at least four (4) feet above the highest known or calculated ground water table. When two (2) or more seepage pits are used, a distribution box con- structed in accordance with ~150.O14D shall be used if the inlet inverts of the seepage pits have no more than one (t) foot differ- ence in elevation. If the difference in elevation between the in- let inverts is greater than one (]) foot, the seepage pits shall be connected in ser~es. The location of seepage pits, in addition to the general provisions under Chapter 150.014F, shall be not less than the stated minimum distances from the fo]]~wing: