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CCP 10-30-1995
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CCP 10-30-1995
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<br /> .- <br /> , <br /> I. Lift Station Number 6 <br /> . Location: Easement on Lakeshore along Lake Johanna Trail <br /> Type: Air Ejector <br /> I Manufacturer: Cantex <br /> Construction: Ejector "pot" in underground concrete structure <br /> Design Capacity: 30 gpm at 30 feet TDH <br /> . Constructed: 1961 <br /> Co=ents: <br /> I TIus is a unique type of pumping station that uses air pressure to push the wastewater to <br /> the discharge point. The design requires a sealed pressure chamber ("pot"), automatic valves and <br /> an air compressor to provide the "push", All of the equipment and electrical controls are housed <br /> . in a concrete structure below the ground level. Routine maintenance is difficult and time <br /> consuming due to the limited space available, the damp conditions and the coniined space <br /> situation. <br /> I Since the original construction in 1960, the system has been working reasonably well and <br /> has required only routine maintenance, however there is a significant concern about the safety of <br /> I working on this system in an underground location. <br /> Preliminary Reco=endations: <br /> .. This station should be considered for upgrading with a submersible pump system to <br /> eliminate the need for entering the underground structure and dealing with the safety problems. <br /> The station provides service for about 10 homes which are below the elevation of the gravity <br /> I sewer which runs along Lake Johanna Trail. If the lift station were to be eliminated, each of the <br /> homes would have to be selVed by an individual pump located in their yard or basement and new <br /> selVice lines would have to be installed from the individual pumps to the gravity line. It is feasible <br /> I to address the problem with individual pumps but since a reasonable collection system is already <br /> in place and operating, it appears to be less costly to modifY the one pump station and live with <br /> I the collector line as it is unless more significant problems develop. <br /> Lift Station Number 7 <br /> I Location: Shorewood Drive <br /> Type: Wet well! Dry well <br /> I Manufacturer: Smith & Loveless <br /> Construction: Concrete wet well, Steel tube dry well <br /> Design Capacity: 150 gpm at 45 feet TDH <br /> I Constructed: 1959, no major modifications <br /> Co=euts: <br /> I The lift station is located on an easement behind the "Presbyterian Homes" near the <br /> Lakeshore. Power is supplied underground from an overhead line on Sandeen Road. The <br /> I . generator connection is located on the power pole on Sandeen Road, which is remote from the lift <br /> station. Vehicle access to the lift station is difficult, but feasible. Operating personnel indicate that <br /> I <br />
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