the downsizing had been planned more than two years before. Rochelle Becker of the Alliance for Nuclear Responsibility said the layoffs showed that the company was not honest about their plans for the power plant. In September 2012, Allison Macfarlane, the NRC Chairwoman, said that the plant would be down for a prolonged period, and that Unit 3 would be defueled in September 2012 because the unit had been significantly damaged. Due to the shutdown, the NRC ended requirements to monitor non-operating systems. In October 2012, SCE submitted a "Unit 2 Return to Service Report" about corrective actions, such as plugging worn tubes and preventively plugged additional tubes. It proposed a restart limiting Unit 2 to 70% power, to prevent excessive tube vibration, until an inspection within 150 days of operation. SCE reported that most of the excessive wear had been in limited areas, due to higher speed and drier steam than computer modeling had predicted, and inadequate tube support at the U-bend. Analysis had concluded operating at 70% power would eliminate the conditions that caused excessive wear. In November 2012, the NRC decided to refer the Friends of the Earth hearing request to the Atomic Safety and Licensing Board. By November 2012, the cost of the outage was over $300 million, and discussion of restarting Unit 2 had been postponed. In December 2012, the last of the four old steam generators was transported to Clive, Utah for disposal. In February 2013, the NRC asked the steam generator manufacturer Mitsubishi Heavy Industries to provide a redacted version of a report on the plant's steam generators for publication. The report described the changes made in the replacement steam generator including the removal of a support cylinder, changes to the tube support plates and anti-vibration bars, and addition of about 400 tubes. In December 2013, the NRC cited SONGS for failing to properly check the steam generator design, which had caused the plant shutdown. The finding did not carry any fine or penalty but complicated SCE's legal position that they did nothing wrong. The California Public Utilities Commission was considering whether to order a multimillion-dollar refund to SCE customers. Atomic Safety and Licensing Board ruling, May 2013 On May 13, 2013, the Atomic Safety and Licensing Board issued its decision on the Friends of the Earth hearing request filed in June 2012. It determined the current NRC process on this issue constituted