
    No. 82-1005.
    No. 82-1247.
    No. 82-1591.
    Chevron U. S. A. Inc. v. Natural Resources Defense Council, Inc., et al.; American Iron & Steel Institute et al. v. Natural Resources Defense Council, Inc., et al.; and Ruckelshaus, Administrator, Environmental Protection Agency v. Natural Resources Defense Council, Inc., et al.,
   467 U. S. 837. Petition for rehearing denied.

Justice Marshall, Justice Rehnquist, and Justice O’Connor took no part in the consideration or decision of this petition.  