MONTEREY PARK, Calif. (AP) — The EPA says it's reached a $1.6 million settlement with dozens of companies that dumped hazardous waste at a Los Angeles-area landfill that's now a Superfund toxic cleanup site.

Federal regulators announced Friday that 47 companies agreed to the settlement last month. The EPA says the companies dumped thousands of gallons of liquid waste at the Operating Industries site in Monterey Park. The site closed in 1984.

The EPA says it's the last settlement it expects to sign and paves the way to restore the 190-acre area. The area was declared a Superfund site because it released toxic gas and polluted groundwater.

Authorities say in the past 25 years more than 1,000 parties have agreed to some $600 million worth of payments and cleanup cost agreements for the site.