By Thursday, inspectors had covered 90 percent of the wells and facilities in the floodplains, Gilbert said.
"When you have an industrial activity of this scale, you need clear contingency plans," said Conservation Colorado's May-smith. "A clear plan in advance."
State officials will review how effective regulations were in preventing flood spills and whether reporting and emergency plans were adequate, Gilbert said.
Could that lead to new rules or plans?
"That is what we are going to look at," Gilbert said.
State and industry officials insist their performance was good.
"It was chaos — 11,000 homes, 200 miles of road, destroyed," the Oil and Gas Association's Schuller said. "You can't plan for that. You just have to be flexible and responsive."