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FR Air Documents
Note: EPA no longer updates this information, but it may be useful as a reference or resource.
- Revisions to the California State Implementation Plan, Northern Sierra Air Quality Management District, Including Nevada County Air Pollution Control District Portion, Plumas County Air Pollution Control District Portion, and Sierra County Air Pollution Control District Portion | PDF Version (68K, About PDF)
- Revisions to the California State Implementation Plan, Northern Sierra Air Quality Management District, Including the Nevada County Air Pollution Control District Portion, Plumas County Air Pollution Control District Portion, and Sierra County Air Pollution Control District Portion | PDF Version (47K, About PDF)
- Proposed Consent Decree, Clean Air Act Citizen Suit | PDF Version (60K, About PDF)
- National Ambient Air Quality Standards for Lead | PDF Version (66K, About PDF)