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6 ARDEN HILLS CITY COUNCII,WORK SESSION-APRII. 13,2009 3 Public Works Director Hoag explained there was some gray area in the Ordinance as there was some question as to whether the original 5 horsepower pumps were adequate. He indicated the system may not have been rebuilt properly with the right size pumps in 2004 Councilmember Grant questioned if the problem with the rebuild in 2004 was with the pumps or the size of the lift station. Public Works Director Hoag stated everything he has researched to date was leading to undersized pumps. He explained the differences between a chopper pump versus a non-chopper pump and how it affects the volume of service it can = provide. Discussion ensued regarding the work completed on the lift station in 2004 along with the solution at this time. Mayor Harpstead indicated he would like to proceed with a Council motion to approve the two new pumps with the expense being passed along to Presbyterian Homes. Councilmember Holmes explained that the City's position was for Presbyterian Homes to address this issue with a separate structure, which they would maintain. She suggested they be forced to install this system to avoid any future concerns with the Lift Station #7. Public Works Director Hoag indicated even if Presbyterian Homes were to build a separate structure the current chopper pumps need to be replaced. Councilmember Holden asked if it would be reasonable for the City to request that this structure be built by Presbyterian Homes before they proceed with any future building additions. Community Development Director Lehnhoff indicated that sounded like a reasonable connection between a building expansion and requiring an infrastructure upgrade. Mayor Harpstead questioned who redesigned the new lift station in 2004. He also asked who recommended the chopper pumps.