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i r City Council Regular Meeting Minutes July 28, 1998 • Page 7 1 homes on Murray Avenue received damage from the flooding of the alley and this improvement 2 will address that concern. The alley between Pahl Avenue and St. Anthony Boulevard will be 3 reconfigured to direct drainage toward the holding area and prevent water migration to the 4 properties as it does now. 5 Thuesen noted a short section of Pahl Avenue is being done rather than the entire length and 6 asked if the street level will be lowered. Mr. Hubmer stated the intersection will need to be 7 reconstructed and the road will be lowered a little. More work is not being proposed due to the 8 cost. 9 Motion by Faust, second by Thuesen to approve Resolution 98-061,re: Ordering preparation of 10 report on improvement. 11 Cavanaughasked if residents will be informed about these improvement projects. Mr. Hubmer 12 stated that due to the short time frame between now and when the bids will be received,they 13 would like to do the feasibility study and then hold neighborhood meetings after the feasibility 14 study is accepted. 15 Motion carried unanimously D. Discussion of Revisions to the Sump Pump Inspection Program. 17 Chuck Janski, WSB,- explained the two primary objectives of the Sump Pump Inspection 18 Program are to reduce the flow rate into the sanitary sewer system and to reduce the number of 19 basement backups. Mr. Janski commented on research conducted to review building 20 construction records and their finding that the majority of homes in St. Anthony (over 84%)were 21 constructed prior to 1970. At that time, sump pumps were not uncommon in construction but 22 some homes have a passive system with drain tile going directly into the sanitary sewer. He 23 explained the corrective action that would be required and commented that it is costly($1,200 to 24 $2,000 per house) and highly invasive which may result in a lot of objection from residents. 25 Mr. Janski explained that the'Sewer Inspection Program has been used by many communities 26 successfully but in those cities the homes were newer. In St. Anthony,the anticipated costs to do 27 door-to-door inspection didn't seem practical to find 100 sump pumps which may not even 28 impact the flow system. He explained that they recommend an alternate approach to address the 29 problem by shifting the focus from sump pump reduction alone,to a combination of infiltration 30 reduction and system improvements. They recommend a study be conducted to determine the 31 feasibility and cost effectiveness of constructing physical improvements to the sanitary sewer 32 system. This feasibility study would include a system analysis to consider pipe or routing 33 improvements to reduce basement backups and a revised infiltration reduction program directed 34 at reductions in passive connections as well as sump pumps. With the upcoming street 4 reconstruction opportunity, it is possible to make sanitary sewer corrections at a lower cost so this is an appropriate time to look at that option. They also recommend continuing with planned 37 sump pump inspection to inspect as requested or when property changes hands.