According to the Dallas Morning News:
West fertilizer plant said in report that it presented no risk
By RANDY LEE LOFTIS Environmental Writer
Published: 17 April 2013 11:23 PM
The fertilizer plant that exploded Wednesday night in West, Texas, reported to the Environmental Protection Agency and local public safety officials that it presented no risk of fire or explosion, documents show.
West Fertilizer Co. reported having as much as 54,000 pounds of anhydrous ammonia on hand in an emergency planning report required of facilities that use toxic or hazardous chemicals.
But the report, reviewed Wednesday night by The Dallas Morning News, stated “no” under fire or explosive risks. The worst possible scenario, the report said, would be a 10-minute release of ammonia gas that would kill or injure no one.
Besides, we don't need no stinkin' OSHA and EPA.