About 100,000 homes built before 1975 aren't bolted to their foundations. The next mayor, Novick says, will need to aid efforts to pass a statewide requirement that owners disclose this fact before they sell their houses. He or she also will need to persuade industry along the Willamette River to secure their large fuel tanks, both so the fuel doesn't contaminate the river and so emergency responders can gas up their vehicles in the event disaster strikes.