production a priority over safety. In 1979, Edison disciplined a supervisor for ordering an unauthorized inspection of unrelated pipe welds. "The fear SCE management has instilled in its employees is counterproductive to safety and increases the chances that additional incidents as serious as this one may occur in the future," the report said. The report found no evidence that the accident was caused by a specific action on the day of the pipe failure. The report recommended sweeping changes to Edison's policies, including annual reports to the PUC on the utility's safety training, inspection and maintenance programs. In addition, the report argues that, because the accident was avoidable, the costs should be borne by Edison's shareholders, not its rate-paying customers. Shutdown The plant was shut down on December 31, 2005, with the possibility it may not reopen. With the shutdown of the plant, the mine supplying the coal was also closed as well. The land where the mine was located is owned by the Navajo and Hopi tribes. This closure had a major negative impact on the Hopi. The plant was shut to comply with a consent agreement reached to settle a 1998 CAA lawsuit brought by several environmental groups. The plant had been targeted as a major source of pollution in the Grand Canyon and other locations to the east. Furthermore, the Hopi and Navajo signed an agreement preventing the use of water from the local aquifer to make up slurry. Various plans were presented, including selling the plant and retrofitting it to burn natural gas, although the latter would have required construction of a second high pressure gas line from Topock, to the south. Another option would have been to install exhaust scrubbers, which would have cost $1 billion. In May 2007, SCE discontinued efforts to restart or sell the plant. Dismantling On June 10, 2009, Southern California Edison announced that the Mohave Generating Station would be decommissioned and all generating equipment would be removed from the site. Later, SCE announced that all administrative buildings on site would also be razed. The only structure remaining on the property will be the 500 kV switchyard, which will continue to serve as a switching location for the regional bulk power system as well as provide electricity to a nearby Nevada Power substation supplying the Laughlin area. Dismantling got underway in October 2009 and is expected to take 2 years and