The proposed rule amendments (OGC No. 10-0872) update, to the July 1, 2009, Code of Federal Regulations, the department’s adoption-by-reference of air pollution regulations promulgated by the U.S. Environmental Protection Agency (EPA) at 40 C.F.R. Parts 60, 62, 63, and 81. The department is also correcting, as needed, citations to regulations for which enforcement is reserved to EPA and deleting previously adopted-by-reference EPA regulations at 40 C.F.R. Part 60, Subpart HHHH, which are now obsolete.