An empty oil storage tank in Weld County over-pressurized Monday night, blowing its lid. It likely caused a boom heard around Lochbuie. Residents of the area were roused by the loud noise, with some people calling 911 to report it about the same time the storage tank blew its top. On Wednesday, Ward Petroleum Corporation of Fort Collins filed an “accident report” with the Colorado Oil and Gas Conservation Commission. Related ArticlesNovember 22, 2017 Man dies of injuries suffered in gas pipeline fire east of Greeley; two other workers still being treated November 21, 2017 Lt.