( October 21, 2025, 2:21 PM EDT) -- DENVER — A federal judge in Colorado has granted plaintiffs class certification in their lawsuit over abandoned hydraulic fracturing wells that the plaintiffs contend pose a threat to human health and have the potential to contaminate groundwater, ruling that class certification is proper under Federal Rules of Civil Procedure Rules 23(b)(2) and 23(b)(3) because the plaintiffs met all of the requirements for certification....