On May 4, 2012, the NRC issued a Notice of Violation to Pacific Gas and Electric Company (PG&E) for a violation of 10 CFR 50.9, "Completeness and Accuracy of Information," associated with a Severity Level III violation involving PG&E's failure to provide information to the Commission that was complete and accurate in all material respects, related to its NRC Generic Letter 2003-01 response. Specifically, in a letter dated April 22, 2005, PG&E stated that: (1) test results confirmed that no unfiltered control room in-leakage existed; and (2) tracer gas in-leakage testing was performed in the alignment that results in the greatest consequence to the control room operator. This information was inaccurate because control room ventilation testing conducted prior to PG&E's response to Generic Letter 2003-01 indicated that the unfiltered in-leakage was greater than the value assumed in the design basis radiological analyses, and the system test was not performed in an alignment that resulted in the greatest consequence to the control room operator.