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Council Meeting Minutes July 28, 1987 III Proper asked for an extended warranty on the curb patching and be- lieved a two-year warranty would be an optimum time, giving the city a factor of safety (versus Braun Engineering Testing's recom- mended one-year warranty). In response to Benke's question about the footprints, Proper indi- cated he witnessed a contractor working on the curb on Fourth Ave- nue and noted the footprints on the curb shortly thereafter; Roger Dalzen, 687 Fourth Avenue N.W., noted the same on Seventh Street. To clarify the warranty, Proper indicated the contract includes a one-year warranty and he is recommending an additional year, for a total of two years. Benke asked if aggregate spalls are unique to curbing projects; Norton stated he noticed a matrix deterioration and the aggregate was exposed more than would be the case, noting it is very appar- ent in driveway entrance areas which could be a result of traffic that had to get in and out before the concrete had set up proper- ly; in other areas, the concrete may have gotten wet before it was allowed to set up properly (there were a few areas like that; again at the driveway entrances). Norton indicated this is not extraordinary nor unusual if there had to be traffic. I Williams recalled there were some situations where the road was graded in such a way the water was causing a problem in garages and residences. Proper stated two locations were found to have problems because of the recent heavy rains; as they were not the fault of the contractor, the corrections will be completed by the city staff. Danny Dahms, 675 Fourth Avenue N.W., noted epoxy is already crack- ing and asked what guarantee is in place to have it replaced; Benke stated there are noticeable cracks where the repair was very thin and the area will be corrected in the Spring following the freeze/thaw cycle. Dahms asked if council should consider a longer warranty; Norton believed, after two years, the city and residents should be able to tell if deterioration is faster than expected and the city could take further action at that time; did not believe a five- year warranty would mean much more than a two-year warranty. I As to the question of the pop-outs, Norton indicated the contrac- tor will be responsible for what happens during the time period of two freeze/thaw cycles; there will not be damage to the curb if the epoxy repairs do pop out; and any further repairs would be made before the seal coating three to five years after completion of the project. In response to Williams1s concern about enforcement, LeFevere stated it would go to litigation but suggested a less expensive alternative for the city would be the requirement of a performance bond. Blomquist asked that a performance bond be added as a condition; Benke concurred. Page 3 -.