AgdaPkt 2002-11-18 - Laserfiche WebLink

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November 18, 2002 Subject Hastings and Briarfield Avenue Street Light Circuit Repair - Change Order No. 1 Recommendation By Motion, approve Change Order No. 1 for the Hastings and Briarfleld 5kV Street Light Circuit Repair Project to S.G. Barber Construction, Inc. in the amount of $11,464.93 Background On May 6, 2002, City Council approved the specifications and awarded the contract for the Hastings and Briarfield 5kV street light circuit repair in the amount of $17,450.00. The project was designed to convert the street light circuit from 5kV to 240 volts. The project also included replacing the Iow pressure sodium (yellow appearance) lamp fixtures with high pressure sddium (whiter appearance) lamp fixtures. The work did not begin until September 18, 2002 after all of the materials were ordered and available for the project. Councilmembers may recall approving previous 5kV circuit conversion project change orders for conduit blockages discovered during the work. As a result of those change orders, new procedures were implemented by staff to pre-check the conduit continuity prior to bidding the project. However, as this particular circuit changeover progressed, an unexpected number of different conduit defects were discovered. The only way to determine these conduit blockages is to encounter them during the pulling of the new wire. These new blockages were caused by damage to the pipe such as dents caused during other excavation, pipe bends or kinks caused by tree root interference, and the welding of the existing wire to the steel conduit as a result of a failure or melting of the wire insulation that did not cause a circuit outage. Since the preview of the conduit showed few conduit breaks, the power was shut off and the pulling of wire was expected to take about tl~ree days. As conduit clearance constraints were encountered, the completion of th~ circuit repair was further delayed. Staff determined the best approach was to complete the project as quickly as possible to return the street lights to service. Staff directed the repairs on a time and material authorization at project bid rates. At the conclusion of the project, twenty-one different conduit blockages required correction involving additional excavation and conduit repair. The project took over three times as long as expected to complete - more than three weeks compared to one week. During the repairs, the street lights were out of service for an unreasonable amount of time which resulted in several complaints from residents. The total cost of the project is $28,914.93, 60.3% greater than the cost of the original project. Gsr~rdlcouncil reports)Sky Page 1 of 2