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EPA Proposes Approving Two Revisions to the Arizona SIP for Stationary Source Permits

On January 2, 2024, EPA proposed approval of two revisions to the Arizona SIP.  These revisions include updating the SIP-approved versions of Arizona Administrative Code rules R18-2-101 (Definitions) and R18-2-404 (Offset Standards) to the version currently in state law. These revisions update...