R97-105 ACCEPTING THE BID AND AUTHORIZING A CONTRACT

Home Browse Search

The funding allocated for this project in the City's FY 97-98 Budget is $280,000. This amount is $700,500 less than the bid and if the tanks must be replaced the budget is approximately $766,000 short. The original budget amount was based on rehabilitating only the hydraulic system. It was decided during the project design that additional work is required and that it would be cost effective to do this work as part of this project. This additional work includes: 1. The removal, inspection and cleaning of the four hvdraulic cylinders that control the north bascule a�te, not done as part of the most recent dam rehabilitation contract. This requires the contractor to access the area immediately downstream from the spillway with his equipment, material and personnel. High flows in the Sangamon River and/or releases from Lake Decatur Dam will restrict the contractor's work and may result in delays to his schedule. This work was added after the inspection of the cylinders on the south bascule gates as part of the recently completed project. The cylinders on the south side were found to have an internal buildup of sludge and debris that needed to be cleaned. The additional cost ofthis work to the project is $135,000. 2. The construction of a metal enclosure building axound the oil tanks and associated pining. This work was added to provide a controlled environment for the tanks. The tanks in the past have been outdoors and subject to mist from the sluice gate which in the winter freezes on the tanks. B&V also shifted their estimate for the cost of the crane for the cylinder rehabilitation discussed in Item 1 to this work to conespond to the bid�received from Osage. The additional cost to the project for this work is $192,000. 3. The re.placement of electrical controls and service to o.perate the dam �ates and re�lacing control house lights and heaters. This work was originally planned to be done as part of the just completed project, but was deleted from that project because it would have involved considerable electrical rework and the expansion of the control room consoles to accommodate the required upgrades. It was decided that this work would be best done in conjunction with this project. The additional cost for this work is estimated to be $90,000. 4. The rehabilitation of the three oil tanks. It was decided during the project design that it was timely and cost effective to do this work as part of this project and to ensure no damage occurs to the new hydraulic system. The additional cost for this work to the project is estimated to be $146,500. � 5. The installation of electronic devices and remote monitoring system equipment. , These items have been incorporated into the contract to work in conjunction with the SCADA system currently being installed as a part of the Lake Level Monitoring System. This system will report and record the level of Lake Decatur, provide up-to-date information on incoming flows and enable staff to more , effectively manage the operation of the dam gates to control the lake level. The additional cost for this work to the project is estimated to be $50,000.