Nick Snow Washington Editor The US Bureau of Ocean Energy Management, Regulation, and Enforcement conditionally approved Shell Offshore Inc.'s revised exploration plan to drill up to four shallow-water wells in the Beaufort Sea beginning in July 2012. Shell acquired the leases in sales held in 2005 and 2007. Approval of the revised plan follows BOEMRE's completion of an environmental assessment. Conditions include a requirement for Shell to obtain all necessary permits from the US Environmental Protection Agency, US Fish and Wildlife Service, National Marine Fisheries Service, and other agencies. The plan covers anticipated timing of the operator's activities, information about drilling v...