Engine Manufacturers Association v. South Coast Air Quality Management District, Scaqmd William A. Burke, Scaqmd Board Chairman Norma J. Glover, Scaqmd Vice-Chairman Michael D. Antonovich, Scaqmd Board Member Hal Bernson, Scaqmd Board Member Jane W. Carney Cynthia P. Coad Beatrice J.S. Lapistokirtley Ronald O. Loveridge Jon D. Mikels Leonard Paulitz Cynthia Verdugo-Peralta S. Roy Wilson, Scaqmd Board Members Bary R. Wallerstein, Scaqmd Executive Officer, Natural Resources Defense Council Coalition for Clean Air, Inc. Communities for a Better Environment, Inc. Planning & Conservation League Sierra Club, Defendants-Intervenors-Appellees v. Western States Petroleum Association, Plaintiff-Intervenor. Engine Manufacturers Association v. South Coast Air Quality Management District, Scaqmd William A. Burke, Scaqmd Board Chairman Norma J. Glover, Scaqmd Vice-Chairman Michael D. Antonovich, Scaqmd Board Member Hal Bernson, Scaqmd Board Member Jane W. Carney Cynthia P. Coad Beatrice J.S. Lapistokirtley Ronald O. Loveridge Jon D. Mikels Leonard Paulitz Cynthia Verdugo-Peralta S. Roy Wilson, Scaqmd Board Members Bary R. Wallerstein, Scaqmd Executive Officer, Natural Resources Defense Council Coalition for Clean Air, Inc. Communities for a Better Environment, Inc. Planning & Conservation League Sierra Club, Defendants-Intervenors-Appellees v. Western States Petroleum Association, Plaintiff-Intervenor-Appellant