06-24-2019 Council Packet - Laserfiche WebLink

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CITY COUNCIL WORK SESSION June 3, 2019 DRAFT 3 Engineer Hankee reported. The council received a written report on the matter of the 85 Pheasant Hills water main break situation. Mr. Alberg reviewed the situation whereby 86 bolts holding a water main valve had deteriorated and gave way to a leak. Within a day 87 the bolts causing the problem were replaced. There is concern about the vibration of 88 equipment used on the street work as it relates to the deteriorated bolts. The vibrations 89 can be partially mitigated. The paving has been halted pending a decision on the 90 problem. Mr. Alberg and staff have discussed options moving forward: a) replacing 91 other valve bolts in the neighborhood; or b) system replacement. The recommendation is 92 to replace valve bolts within the neighborhood. There is also the question of including 93 this type of bolt replacement in future street projects. 94 95 Council Member Rafferty asked for clarification on bolts to be replaced. Mr. Alberg said 96 they are proposing to replace only the main line valve bolts; they would also be able to 97 view and evaluate to a certain extent if other fixes are needed. 98 99 Council Member Rafferty and City Engineer Hankee discussed when the standard of bolt 100 changed; it was indicated in the written report that the better stainless steel bolt became 101 the standard in the late 1990’s. Ms. Hankee remarked that the soil conditions surrounding 102 the bolts can impact the life of the bolts; soil samples from this area will be collected in 103 the area of this problem for better understanding. 104 105 Utility Supervisor Williams added that the City has been making replacements with the 106 better quality bolts at every opportunity for some time. 107 108 Mayor Reinert confirmed that the recommendation is to replace not only the bolts in the 109 failed main area but to do replacement throughout the area of the project since the road 110 isn’t finished. Staff added that they would also have to work out a situation that brings 111 the road contractor back later in the year. The mayor remarked that he is aware that there 112 was a water main break on private property in the same neighborhood and he clarified: 1) 113 that the problem was caused by bad bolts; and 2) that residents are individually 114 responsible for those repairs. 115 116 Mr. Williams stated that it is far cheaper to replace all the bolts at one time rather than as 117 they fail because you are mobilizing the work at one time. 118 119 Mayor Reinert suggested that staff should consider the situation whereby property owners 120 are facing large repair costs. 121 122 Finance Director Cotton explained that staff has had some preliminary discussions about 123 how the City could address that liability. Options such as League of Minnesota Cities 124 Insurance Trust coverage or an internal self-insurance fund. The mayor suggests that 125 staff report back on a relief to residents program. 126 127 7. Environmental Coordinator Position – Community Development Director 128 Grochala reviewed information included in the council packet laying out where this 129