A judge in Putnam County has given final approval to a settlement between chemical manufacturer Monsanto Co. and thousands of West Virginia residents over pollution claims.

Circuit Judge Derek Swope approved the settlement Friday.

A $93 million settlement was reached last February with residents who said Monsanto polluted their community by burning waste from production of the defoliant Agent Orange.

St. Louis-based Monsanto had agreed to pay up to $84 million for medical monitoring and $9 million to clean up 4,500 homes. Monsanto also agreed to pay legal fees.

The litigation began with a class-action case by plant workers in the 1980s.

The Monsanto plant in Nitro produced herbicides, rubber products and other chemicals. The plant's production of the defoliant Agent Orange created dioxin as a toxic chemical byproduct.