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Pacific Southwest, Region 9
Serving: Arizona, California, Hawaii, Nevada, Pacific Islands, Tribal Nations
Air Archive
Note: EPA no longer updates this information, but it may be useful as a reference or resource.
Arizona
Direct Final Rule Approving Arizona Summertime Gasoline Volatility Limit for the Phoenix Area (6/97)
Federal Rule - Compliance Assistance for Owners/Operators, Maricopa County (12/99)
Summary of Federal Implementation Plan (FIP) Dust Rule Proposal (1/99)
Federal Plan for Particulate Matter in Phoenix (10/98)
Finding on Phoenix Carbon Monoxide Plan (5/98)
Arizona Cleaner Burning Gasoline Rule (2/98)
California
Air Program Features and Stories
Santa Barbara Ozone Reclassification (11/97)
Final Approval of Santa Barbara Ozone Plan Revision (8/00)
Owens Valley Particulate Matter Plan (08/99)
Interim Approval of South Coast (CA) Carbon Monoxide Plan (4/98)