Analysis of technical issues relating to: California's request for waiver of federal preemption with respect to optional 100,000-mile exhaust emission standards and test procedures for 1980 and subsequent model year light-duty vehicles and 1981 and subse
Pubbl/distr/stampa
Standards Development and Support Branch, Emission Control Technology Division, Office of Mobile Source Air Pollution Control, Office of Air, Noise and Radiation, U.S. Environmental Protection Agency