CCP 10-30-1995 - Laserfiche WebLink

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.. .' this station uas been relatively trouble free with the exception of some electrical phase monitor .- problems. The dry well appears to be i.n relatively good condition with minor spots of corrosion typical of chis type of structure. I Preliminary Recommendations: [n general tue station is in good condition and the routine maintenance program is doing a I good job of maintaining the equipment. With any steel dry wells it is important to routinely inspect the access tube and the floor for corrosion and clean and spot coat or repair as necessary. Lift St:ltion Number 8 I Location: Ingerson Drive at North Hamline Avenue I Type: Wet weill Dry well Manufacturer: Custom Built, Fairbanks Morse Pumps I Coustruction: Concrete wet well and dry well inside building Design Capacity: 1500 gpm at 67 ft TDH (one pump), 1730 gpm at 78 ft TDH (two pumps) Constructed: 1960, major upgrade in 1975, and electrical improvements 1990. I Comments: The 1975 upgrade work included the installation of new long shaft pumps with the dlive . motors installed on a concrete slab at ground level, and construction of a small building over the wet well and dry well. and replacement of the pump controls. The 1990 improvements included .. rebuilding of the pump control panel. The wet well is under the building and access is provided in a separate room with a separate access door from the outside. Electrical controls and the pump motors are located in an . adjacent room with separate access to the outside. The wet well side appears to be in relatively good condition but there are safety concerns due to the confined space classification of this type of design. The dry well side is in good condition and the pumps have been running well with I routine maintenance according to operating personnel. During wet weather conditions, this lift station e"lleriences very high flows suggesting significant infiltration/inflow in the sanitary sewer lines ",ith in the lift station service area, I This lift station structure also houses a flow meter ovmed and operated by the Metropolitan Council Environmental Services (MCES). The flow meter measures and records wastevvater flow from the southeastern portion of Arden Hills. I Preliminary Recommendations: In general the station is in good condition and the routine maintenance program is doing I as good job of maintaining the facility. One comer of the building has some bricks broken offand ~oncrete blocks exposed. TIlls are should be repaired as time allows to seal the building. The wet I welluas some safety considerations which are known by operating personnel and safety precautions are observed when working in this environment. I . I I