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BACKGROUND In early 2018,the City performed routine bi-annual cleaning and maintenance of all water reservoir tanks within the City's water distribution system.This effort included inspecting the interior corrosion-prevention coating system which required a consultant to SCUBA dive each tank.The inspections revealed the interior corrosion-prevention coating systems in the upper Ruby Hills tank, Moller Ranch tank,and Laurel Creek tank needed to be replaced due to significant and widespread corrosion of the interior metal tank walls. In addition, it was determined that the tank access hatches, ladders,some of the tank vents,and the cathodic protection system for each of the three tanks also need to be replaced.The condition of the upper Ruby Hills tank was expected.The condition discovered in the Moller Ranch tank and Laurel Creek tank was not expected. The upper Ruby Hills tank serves a large portion of the Ruby Hills development.Taking the tank out-of-service to perform maintenance would have a significant impact on the water supply to the area residents. In April 2018, Quincy Engineers was hired to study how water could be supplied to the Ruby Hills area while the tank is out-of-service.The study revealed that bypass pumping could be used to supply water, but also showed this option would only be effective during the winter months,when the water demand is low. The Moller Ranch and Laurel Creek water tanks are in the same hydraulic network.One tank can be taken out-of-service and the other tank can supply water to all area residents without the need for additional pumping. But again,this option would only be effective during the winter months,when the water demand is low. In October 2018, Quincy Engineers was then hired to develop the plans and specifications for the rehabilitation of the upper Ruby Hills, Moller Ranch,and Laurel Creek tanks.The plans included the necessary pumping modification for the Ruby Hills service area.The plans and specifications were completed,and the project went out to bid on June 1,2019,with a bid opening date of June 26,2019. On July 16,2019, Pleasanton's City Council awarded the contract to the lowest responsible bidder, Olympus and Associates, Inc., in the amount of$1,730,706. In addition, City Council awarded a contract to CSI Services, Inc.for$99,953 for third- party coating inspection services and a contract amendment with Murray Smith for construction support services. Council authorized the Director of Engineering to approve change orders up to the project contingency amount of$259,600.The project has since been completed and is ready for acceptance. DISCUSSION The project had to be scheduled during the fall/winter months which have low water demands.The work began in early October,once the water demands on the tanks dropped.The Laurel Creek tank was put back into service in late February and the upper Ruby Hills and Moller Ranch tanks were put back in service in late March, prior to increased water demands.There were no water disruptions due to the project.The Page 2 of 4