Opinion ID: 184965
Heading Depth: 2
Heading Rank: 2

Heading: CAM Phase-In

Text: 30 EPA's decision to phase in the CAM requirements as major source permits are renewed is reasonable. EPA acknowledges that some major sources applying for permits will come under CAM's coverage over the next two to three years while some sources will not be phased-in for approximately five to eight years because CAM requirements will not apply to them until their next permit renewal. See 40 C.F.R. § 70.4(b)(3)(iii), (iv) (stating that permits are renewed or reviewed every five years). However, EPA reasonably decided to phase-in CAM requirements based on the already existing licensing structure in order to lessen the burden on sources and state licensing authorities and to create a learning-curve for implementation. See 62 Fed. Reg. 54,90203, 54,927-28 (1997). Nor does NRDC point to a compulsory implementation deadline or offer a basis for second-guessing the agency at this point in time. See NRDC, 22 F.3d at 113740 (implying deference to the agency regarding implementation when statute silent regarding implementation deadline).Given the circumstances, EPA offers a reasonable explanation for the extended phase-in plan.