The Dalles City Council approved a contract with Tank Industry Consultants to design repairs of the roof of the Sorosis Reservoir.  Recent inspections found significant deterioration and metal loss on many of the 68-year-old reservoir’s interior roof rafters and bolts due to corrosion.  Until the Vista Reservoir was completed eight years ago, the Sorosis Reservoir could not be taken offline for repairs.  Public Works Director Dave Anderson says the structure of the tank has been compromised.  Water demands prevent the reservoir from being taken offline in the summer.  The contract with TIC is for over $199,000, and a construction contract will be bid in the fall.