A state environmental commission illegally approved a Baltimore County law barring liquefied natural gas plants in sensitive coastal areas, according to a court complaint lodged by the company trying to build such a facility at Sparrows Point.

The complaint was filed in Anne Arundel County Circuit Court on Friday against Baltimore County and Maryland?s Critical Area Commission for the Chesapeake and Atlantic Coastal Bays, which last month voted to approve a county law banning LNG terminals within 1,000 feet of Bay wetlands. The law was upheld by a federal judge at the same moments the commission voted to adopt it into state law.