ELR Citation: 42 ELR 20024
No(s). 10-71457, -71458 (9th Cir. Jan 20, 2012)

The Ninth Circuit held that EPA's approval of the 2004 SIP for the San Joaquin Valley nonattainment area for the one-hour ozone NAAQS was arbitrary and capricious. Although it approved the SIP in 2010, EPA's approval was based on data current only as of 2004. By approving the 2004 SIP despite kn...