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Regulations for Emissions from Vehicles and Engines

Letter to Governor Arnold Schwarzenegger from EPA Administrator Stephen Johnson Regarding California’s Request for a Waiver of Pre-emption for Its Greenhouse Gas Regulations

This letter from Stephen Johnson to Governor Schwarzenegger denying California's request for a waiver of Federal preemption for motor vehicle greenhouse gas emission standards.

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Letter to Governor Arnold Schwarzenegger from EPA Administrator Stephen Johnson Regarding California’s Request for a Waiver of Pre-emption for Its Greenhouse Gas Regulations (PDF)(4 pp, 2 MB)

US EPA

Regulations for Emissions from Vehicles and Engines

Letter to Governor Arnold Schwarzenegger from EPA Administrator Stephen Johnson Regarding California’s Request for a Waiver of Pre-emption for Its Greenhouse Gas Regulations

Regulations for Emissions from Vehicles and Engines Home