DES MOINES &#8212 General Motors Corp. has agreed to pay a $75,000 fine for failing to meet deadlines for cleaning up contaminated properly formerly owned by the automaker in Sioux City.

Iowa Attorney General Tom Miller said in a statement Wednesday that a consent decree signed by Woodbury County District Court Judge Gary Wenell resolves a lawsuit that was filed by his office.

The lawsuit alleged that GM failed to meet several deadlines it had agreed to with the Iowa Department of Natural Resources to clean up soil and groundwater contamination at the property near Interstate 29 in Sioux City.

General Motors no longer owns the site, but the company is obligated under state and federal laws to conduct the long-term cleanup of soil and groundwater contaminants at the site, and to prevent contaminated underground water from migrating from the site.

The agreement also prohibited any further violations by the company.

Court documents said GM bought the land in 1980 from Zenith Corp., which had assembled transistor radios there. Zenith had underground storage tanks and used solvents, lacquer thinner and various volatile organic compounds.

Testing has shown that groundwater contamination was found migrating from the site at levels of potential concern to human health, the lawsuit said.

Further testing found groundwater contaminated with known or probable cancer-causing agents including vinyl chloride other volatile organic compounds.

The site now is owned by Confluent Enterprises, but GM is responsible cleaning up the site.