5. Travis Tank: a. The work period will be determined by DWR and must coincide with the annual maintenance shutdown of the North Bay Aqueduct. Any alterations to the schedule must be agreed upon in advance by both DWR and the Contractor and captured in writing fourteen (14) days prior to the start of the project. Work must be completed within a five (5) to seven (7) consecutive-day period. In the event the work is not completed within the specified time frame, liquidated damage charges will apply at a rate of ten-thousand dollars ($10,000) per foot average of sediment remaining in the tank. Due to the operational needs of all DWR equipment and facilities, annual work is not guaranteed. b. The Contractor must supply all labor, equipment, and material necessary to remove sediment from Travis Surge Tank. Travis Surge Tank is an open tank that is approximately one-hundred fifty feet (150’) in diameter and twenty-four feet (24’) high. The Contractor will have access to the interior of the tank through two (2) three-foot (3’) diameter access doors, diametrically opposed in the tank, at approximately three feet (3’) from ground level. It is expected that the sediment loading will vary from one (1) to three (3) feet in average thickness throughout and along the bottom of the tank. The sediment taken from the tank must be pumped into an existing holding pond adjacent to the tank. The sediment must be taken in a slurry form from the tank and will be pumped out, via a hard discharge line system from the tank, into the existing main holding pond located adjacent to the tank. Ninety percent (90%) of the flooring surface will need to be visible for inspection by the Delta Field Division’s (DFD) Civil Engineering staff when the sediment removal has been completed. The floor does not need to be pressure washed, squeegeed, and dried. Contractor will not be allowed to use any motorized equipment within the tank, such as bobcats or loaders of any type that could cause damage to the tank’s floor.
