The following information was provided by San Onofre Nuclear Generating Station (
SONGS) via phone and email:
At 1109 PST, SONGS made [an] official notification to the [California] Department of Toxic Substance Control (DTSC) relating to one violation/citation non-minor, requiring corrective action related to the hazardous waste facility, permit CAD000630921.
Specifically, SONGS violated 22 California Code of Regulations (CCR) 66270.30(a) and California Health and Safety Code 25202(a), in that SONGS failed to comply with the conditions of the permit, specifically Part V `Special Conditions,' #5. To wit, DTSC inspectors observed the secondary containment which failed to be free of cracks or gaps in a waste management unit located in the [Hazardous Materials] Area - South Yard Facility (SYF), Section A.
During the physical inspection, the inspector noted holes were drilled into the slab (the containment system) of mixed waste/hazmat storage pad areas.
Because the identified holes only partially penetrate the secondary containment (i.e., the concrete pad), the secondary containment remains functional and intact and is sufficiently impervious to contain leaks, spills and accumulated precipitation.
SONGS is in discussions with DTSC to determine if the holes partially penetrating the pad exceed the permit requirement.
The following additional information was obtained from the licensee in accordance with Headquarters Operations Officers Report Guidance:
SONGS will notify NRC Region IV of this event.