Agenda - Council - 01/14/1986 - Laserfiche WebLink

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?a~e 2 There was some discussion with Mr. Carson and the plumber as to how so much sand could be present in a service line. I told them that until the nature and location of the lines' fault was ascertained, connecture was valueless. However, when the city's mains and services were installed, they were clean, tight and carefully tested to assure their integrity. The following day, Wednesday, December 11, 1985, Roto Rooter's sewer jet crew arrived at 9:00 a.m. and attempted to clear the service line. They had little success. Approximately six feet into the exposed pipe, a gap was encountered which sucked in about 20 feet of jet hose. At that point, it was decided that the project's utility contractor (Arcon Construction, Mora, Minnesota) should be called to make the repairs. Since they have equipment large enough to handle the frost and high groundwater conditions. Also, they had previously requested that if repairs were necessary to a line which they installed, that they be allowed to fix it. I called John Grace, project foreman with Arcon, and told him to line up the necessary crew and equipment. He said they would be in first thing tomorrow. I also explained to Mr. Carson that if the'fault in the line is not due to a problem with Arcon's work, he would probably be billed for their time and materials. A Cat 255 backhoe was delivered to the site by Arcon in the afternoon. The plumber covered the area with hay and planks to prevent freezing and make the area safer. On Thursday, December 12, 1985, Arcon's crew arrived on-site at about 7:30 a.m. and proceeded to dig up the service riser. In the process about one-third of the driveway had to be removed so that the large backhoe could work. Upon uncovering the service riser a 10" gap was discovered between the service and the riser pipe. The service elevation was checked at this time in case the service itself had settled. End of service elevation was found to be 851.0. The service had been staked to an elevation of 850.9 at the time of construction. Services are ordinarily installed slightly (0.1' to 0.2' above the staked elevation to compensate for possible settlement. This information was given to both Mr. Carson and the plumber. They both, at the time, accepted the theory that the riser was probably pulled off at the time the house was connected to the riser.