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I I I Council Meeting Minutes September 14, 1993 Page 4 Public Hearina. continued Benke noted a municipal survey which stated that 11 of 13 cities assume that it is the property owners responsibility for that area of the main to the property line. Proper explained that over the years, there have been several service failures which property owners repaired themselves. One of the problems with this policy is that some residents have retro active problems. The City is unable to determine a problem with that area from the homeowner's line to the main. The mains can be televised and inspected for any root problems, but the City is unable to inspect private lines. Benke asked if there was anything usual about the design of this system. Proper noted that most sewers in this area were constructed of clay pipe and reinforced concrete which caused the joists to not be as strong and water tight as newer materials. The new pipes and materials have some flexibility to enable the pipes to move with shifting soils. Proper noted that 1614 and 1638..23rd Avenue share a service and has been identified to be repaired. Typically, the policy does not allow an additional service to be installed, but in this case, staff recommends an additional service at this location. The excavating costs should be minimized because most services are directly across from one other. Five bids were received and the lowest bid came from Progressive Contractors in the amount of $87,000. Progressive Contractors is a large company and is c;apable of performing the job. Gunderman verified that the street repairs would be included in the project. Williams asked if there is possibility that other services could fail in this area. Proper acknowledged that it is hard to determine what exactly caused the breakage, but feels a majority of the problem was caused by shifting soils. He feels the working services should be left alone. Engineering Technician Bob Rutherford showed the video which televised the main and displayed the cracked and broken services. Williams verified that the sloped areas would be replaced with newer materials to prevent breakage from cleaning and maintenance. Bob Swoverland, 1614--23rd Avenue, agrees the services need to be repaired, but asked Council to grant exception to policy and requests the City to accept financial responsibility for the repairs. He noted the 19 failures in a two block area since 1990. All located at the connection to the main line and were not a result of blockage, maintenance or use, but were caused by improper soil compaction. He noted that staff has been very helpful in providing information to residents. Patrick Leung, 1598--23rd Avenue, stated that a representative from the Metropolitan Waste Control Commission feels the pipes failed because of lack of support in the soil underneath, not from the resident sewer load. Public Hearina 23rd Avenue Sewer Repairs Report 93-248