Summary


                         Title II - Mobile Sources


   *  TAILPIPE STANDARDS: Cars and light trucks: Tier I is 0.25
      NMHC, 3.4 CO and 0.4 NOx. Possible Tier II is 0.125 NMHC, 1.7
      CO and 0.2 NOx. Tier I phased in 1994-1996. Effectiveness of
      Tier II in 2004 depends on EPA study of need, feasibility, and
      cost-effectiveness. Useful life extended to 100,000 miles for
      most emission standards.


   *  COLD TEMPERATURE CO: Phase-in beginning in 1994 of 10 gpm at
      20 degrees F for cars. A 3.4 gpm standard takes effect in 2002
      if 6 or more cities are in CO nonattainment in mid-1997.


   *  CLEAN FUELS: In 1998 all centrally-fueled fleets in 26 areas
      must buy 30% of the new vehicles that meet standards of 0.075
      gpm VOC and 0.2 NOx; no toxic standards. If such vehicles are
      not being offered for sale in California the program is
      delayed possibly until 2001. Purchase requirements increase to
      70% in 3rd year.


      In 1996, 150,000 clean fuel cars are required to be sold in
      California; increasing to 300,000 per year by 1999. These cars
      must meet a standard of 0.125 gpm VOC. Phase 2 begins in 2001
      with cars meeting fleet-type standards. Other cities can
      opt-in to program.


   *  REFORMULATED GASOLINE: Beginning in 1995 reformulated gasoline
      is required in the 9 worst ozone areas; minimum oxygen content
      (2.0%), benzene (1.0%), aromatics (25%), VOCs and toxics
      reductions (15%, up to 20-25% in 2000). Cities can opt-in.


   *  OXYFUELS: Beginning in 1992, gas in 41 CO areas must have 2.7%
      oxygen level in winter months.


   *  URBAN BUSES: Delays diesel particulate standard from 1991 to
      1993. Beginning in 1994 all buses must meet a PM standard of
      0.05 g/hphr (if not feasible EPA will set at 0.07). Based on
      performance EPA may implement a low polluting bus program in
      larger cities.


   *  REFUELING: After consultation with DOT on safety issues, EPA
      required to promulgate onboard controls. Stage II requirements
      vary by classification.


   *  VOLATILITY: 9 psi in most of the country beginning 1992; EPA
      can set lower levels in warmer areas, but cannot require any
      standard below 9 psi in attainment areas.


   *  DESULFURIZATION: Diesel fuel highway use limited to 0.05%
      sulfur by weight.


   *  AIR TOXICS: Based on a study of mobile source-related toxics,
      EPA will regulate, at a minimum, emissions of benzene and
      formaldehyde.


   *  NON-ROAD ENGINES: Based on a study, EPA may regulate any
      category of non-road engines that contribute to urban air
      pollution. At a minimum, EPA must control locomotive
      emissions.


   *  LEAD IN GASOLINE: As of January 1, 1996, lead banned from use
      in motor vehicle fuel.