
    No. A-863.
    No. A-864.
    No. A-875.
    Exxon Corp. et al. v. Environmental Protection Agency; Texas Chemical Council v. Environmental Protection Agency; and Harris County et al. v. Environmental Protection Agency.
   Applications for stay of mandate of the United States Court of Appeals for the Fifth Circuit, presented to Mr. Justice Rehnquist, and by him referred to the Court, denied. Mr. Justice Powell took no part in the consideration or decision of these applications. 
      
       See also note, supra, p. 940.
     