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City Council Regular Meeting Minutes May 23, 2000 Page 6 1 4. Resolution 00-045 re: Accept Feasibili1y Study and Authorize Plans and 2 Specifications for the Harding Lift Station Project. 3 Mr. Hubmer directed the Council's attention to the Feasibility Report as presented by 4 WSB & Associates. 5 By way of background, Mr. Hubmer stated that in 1999, a study of the sanitary sewer 6 system_was completed to evaluate the existing system and identify possible modifications 7 to improve the operation and reduce the frequency of wastewater backups. The study 8 noted that the limited capacity of the Harding Street lift station was a contributing factor 9 to the backup problem in the vicinity of 37th Avenue and Harding Street. However, 10 simply increasing the pump capacity would aggravate the downstream problems so a I 1 more detailed study of the Harding Street/37th situation was authorized. 12 Consequently, there are residents in the drainage area that do have sanitary sewer backup 13 problems with the existing station because it cannot pump the water quickly enough. In 14 addition, in the Southern portion of the City, there are sanitary sewer backup problems as 15 well. 016 One possible option is the rerouting of the Harding Lift Station into the City of 17 Minneapolis. This would be beneficial to both cities as St. Anthony currently diverts into 18 Minneapolis south of 33rd Avenue. Minneapolis has had difficulties with that system 19 and is anxious to have St. Anthony move the diversion into another area. It is a win-win 20 situation because the City can increase capacity of the lift station and alleviate some 21 problems for Minneapolis as well. 22 Mr. Hubmer continued by providing some options for the Council to consider: 23 1. Lift Station Option 1. The existing lift station would be abandoned and a new 24 structure would be constructed at the same location. The controls would be located in a 25 metal control cabinet that is mounted on the ground surface near the wet well. The antici- 26 gated cost would be approximately$100,000. 27 2. Lift Station Option 2. All of the equipment in the existing dry well would be 28 removed as well as the upper portion of the steel dry well. The lower shell of the existing 29 dry well would remain in place. In short,the existing structure would be rehabilitated. 30 The anticipated cost would be approximately $70,000. 31 3. Forcemain Option 1. The forcemain would run under 37th Avenue NE to the 2 north right-of way, then west along the right-of-way toward Stinson Boulevard. Just east 3 of the intersection with Stinson, the line would be directed diagonally under 37th toward 34 the existing manhole in the intersection. The total project cost associated with this option