Title
Consider and take action on a resolution to ratify the contract with D. Wagner Construction, Inc. for the emergency repair of the 24-inch gravity sanitary sewer near Butler Road Lift Station in an amount not to exceed $127,573 (Director of Public Works)
Background:
Approval of this resolution will ratify the contract with D. Wagner Construction for the emergency repair of the 24-inch gravity sanitary sewer line near the Butler Road Lift Station located at 1220 Butler Road in an amount not to exceed $127,573.
On Wednesday January 2, 2019, a local business reported a sinkhole near the City’s Butler Road lift station located at 1220 Butler Road. Upon evaluation, it was determined to be an emergency repair due to the depth, complexity, and the magnitude of the area served by this critical line and location. The aggressive nature of the sinkhole required prompt response and a contractor with the ability to quickly mobilize on-site to stabilize the area of failure. This effort prevented potential damages to the nearby lift station, roadway, and power pole with a three phase transformer bank. Butler Rd. was closed to through traffic for safety concerns related to the amount of heavy machinery and support equipment needed to excavate 20-foot deep gravity sewer.
Excavation activities were complete by Wednesday, January 9th, revealing the failure of the 24-inch gravity sewer line that adjoins the junction manhole and 42-inch gravity sewer that enters the Butler Rd lift station wet well. Corrosion from Hydrogen Sulfide (H2s) gas contributed to failure of approximately 8 feet of the 30 plus year old ductile iron pipe. By-pass pumping operations were also implemented during this to insure the continuation of sewer service to homes and local businesses, and to avoid sanitary sewer overflows. Repair of the failed gravity line was completed on Monday, January 14th. Concerns of the condition of the adjoining manhole structure required a specialized coating applicat...
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