The Office of Environmental Health Hazard Assessment proposed amendments to 27 Cal. Code Regs. §§25705 & 25805 to change the levels of no significant risk and no observable effect for polychlorinated biphenyls. The deadline for comment is May 28, 2012. See http://www.oal.ca.gov/res/docs/pdf/notice/15z-2012.pdf (pp. 489-93).