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   damage  from air  pollutants  on  ecosystems. Such  program  shall

   include the following elements:

         "(1)  Identification   of  regionally   representative   and

      critical ecosystems for research.

         "(2)  Evaluation  of  risks  to  ecosystems  exposed  to air

      pollutants,  including  characterization  of  the   causes  and

      effects of chronic and episodic exposures to air pollutants and

      determination of the reversibility of those effects.

         "(3) Development of improved  atmospheric dispersion  models

      and  monitoring  systems   and  networks  for   evaluating  and

      quantifying exposure to  and effects of multiple  environmental

      stresses associated with air pollution.

         "(4) Evaluation  of the  effects of  air pollution on  water

      quality, including assessments of  the short-term and long-term

      ecological effects of acid deposition and other atmospherically

      derived  pollutants on  surface water  (including  wetlands and

      estuaries) and groundwater.

         "(5) Evaluation of the  effects of air pollution on forests,

      materials,   crops,  biological  diversity,  soils,  and  other

      terrestrial and aquatic systems exposed to air pollutants.

         "(6)  Estimation   of  the  associated   economic  costs  of

      ecological  damage which have occurred  as a result of exposure

      to  air  pollutants.    Consistent with  the  purpose  of  this

      program, the  Administrator  may  use  the  estuarine  research

      reserves  established pursuant  to section  315 of  the Coastal

      Zone Management Act of 1972 (16  U.S.C. 1461) to carry out this


      "(f)  Liquefied  Gaseous  Fuels Spill  Test  Facility.-(1)  The

   Administrator, in  consultation with the  Secretary of Energy  and

   the  Federal Coordinating  Council for  Science, Engineering,  and

   Technology, shall  oversee an experimental and analytical research

   effort, with  the experimental research to  be carried  out at the

   Liquefied Gaseous Fuels Spill Test Facility.  In consultation with

   the Secretary of Energy,  the Administrator  shall develop a  list

   of  chemicals and  a schedule for  field testing  at the Facility.

   Analysis of a minimum  of 10 chemicals per  year shall be  carried

   out, with  the selection  of a  minimum of 2  chemicals for  field

   testing  each  year.  Highest  priority shall  be  given  to those

   chemicals that would  present the greatest potential risk to human

   health as a result of an accidental release-

         "(A) from a fixed site; or

         "(B) related to the transport of such chemicals.

      "(2) The purpose of such research shall be to-

         "(A)  develop  improved  predictive  models  for atmospheric

      dispersion which at a minimum-

           "(i)  describe  dense  gas  releases  in  complex  terrain

         including  man-made structures  or  obstacles  with variable


           "(ii) improve  understanding of the effects  of turbulence

         on dispersion patterns; and

           "(iii)  consider   realistic  behavior   of  aerosols   by

         including physicochemical reactions with water vapor, ground

         deposition, and removal by water spray;

         "(B)  evaluate existing  and future  atmospheric  dispersion

      models by-

           "(i)   the   development  of   a   rigorous,  standardized

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