Workers doing maintenance repairs at the Sorosis Reservoir in The Dalles have found leaky pipes underneath the tank that need to be fixed.  City Public Works Director Dave Anderson reported the need to the City Council at their Monday evening meeting, noting contractors who were painting the inside of the tank and doing some seismic upgrades found the damage.  He said the cost to fix them will run approximately $86,000.  Mayor Rich Mays says they City has the money to do it in their capital reserve fund without using general fund dollars.  Anderson added metal deterioration has been detected in the roof structure, and he will be coming back to Councilors for authorization to make those repairs.