CC 03-27-1989 - Laserfiche WebLink

Home Browse Search

n.l..UUf,..~'-:> UL Llle firoen n..i..J..i.S KegU.lar i....0ullCl..l M.eetlng) M.arCh LI, l':::lts~ Page 3 REPORT OF CITY ENGINEER SEWER ODOR; 3637 RAMLINE AVENUE sewer odor problem at Council was referred to a memorandum from Clerk Administrator Berger dated 3-23-89 and a letter from Engineer Barry Peters dated 3-22-89, relative to the 3637 Hamline Avenue. '. Will Liebenow, representing SEH, explained the measures utilized to date to investigate the sewer odor problem at the residence on Hamline Avenue; televising the sewermains, cleaning the mains and retelevising, and monitoring Bethel College to determine if buildings on their site contribute to the problem. He stated that with the information compiled it is not possible to make a final determination regarding this matter. Liebenow noted that hydrogen sulfide gas is being detected and can form in all wastewater. He advised in this case it is puzzling as to why it collects at these two residences once the sewage is released. Liebenow stated it must be determined where the gas is coming from and then take the necessary steps to eliminate the gas; he noted it may not be possible to completely eliminate the causes of the gas, however, the mains can be aerated and chlorine to oxidize the gas. , Council was referred page 2 of Peters memorandum, which outlined the proposed investigation of the Bethel College systems, including the lift station, and the costs involved. Liebenow reported that the cost for Item #3, Monitor Hydrogen Sulfide Gas, may actually be less than the $2,000.00 figure estimated; he stated it would be between $600.00 to $2,000.00. He has discussed the monitoring process with a lab in Roseville, MMT Environmental, which is equipped to handle the process. Councilmember Malone questioned what the expenditure would be if aeration and chlorination is necessary. Libenow stated he did not have that information readily available; he estimated the cost between $3,000-5,000.00 for equipment for chlorination. Hansen moved, seconded by Malone, that Council authorize an expenditure from the Sewer Fund, not to exceed $5,000.000, to investigate the sewer odor on Hamline Avenue as outlined in Engineer Peters memorandum of 2-22-89 and explore options for elimination of the odor problem. and that any expenditures exceeding the above amount authorized be approved by Council. Motion carried unanimously. (5-0) Clerk Administrator Berger questioned if Bethel College would be responsible for installation of the chlorination equipment if it is determined the problem originates from their site. . Mayor Sather advised that would be a topic for discussion after the SEH investigation is completed. Councilmember Hansen questioned when the investigation process would begin and if Liebenow would have information available at the April 10 Council meeting. Liebenow advised the project would begin within one week and information should be available for April 10. APPROVE PLANS & SPECS; CLEVELAND AVE. LIFT STATION Council was presented a set of Plans and Specifications for the Cleveland Avenue Lift Station. Councilmember Malone suggested action on this matter be tabled until the next Regular Council meeting in order for Council to review the plans and specifications. Public Works Supervisor Raddatz stated he had reviewed the documents and they were prepared as specified by Council with two alternates for bidding the project. Councilmember Malone asked the Engineer and Public Works Supervisor for their . opinion relative to obtaining easements to complete the project. Raddatz explained the utilities will be located in the road right-of-way and it will not be necessary to obtain easements.