State officials are expected Monday to propose that Honeywell International spend almost $450 million over seven years to clean up mercury and other chemicals dumped into Onondaga Lake.
The state Department of Environmental Conservation this summer outlined alternatives to address pollution from the Allied Chemical plant in Solvay that closed in 1986. Honeywell merged with Allied in 1999 and is responsible for the cleanup.
The mercury led to a fishing ban. Onondaga Lake is on the federal Superfund list of toxic waste sites.
"I feel for too long Central New York has lived with this lost resource," DEC Commissioner Erin Crotty said. The most expensive alternative in her agency's July report would require the company to dredge the entire lake and build a permanent cap over 2,329 acres at a cost of $2.33 billion.
"We're committed to continuing to work with the state to finalize an approach and implement a remedy," said Honeywell spokeswoman Victoria Streitfeld.