Senate Environment and Public Works Chairman Barbara Boxer (D-CA) announced May 28 that she plans to request a Department of Justice investigation of Southern California Edison San Onofre nuclear plant. The same day, Chairman Boxer released a 2004 Southern California Edison letter that she claimed was used to mislead regulators and to avoid a full safety review for the plant’s redesign efforts. On May 30, the company denied the allegation. San Onofre has been offline since January 2012 following an equipment failure.