
    No. 83-1013.
    No. 83-1373.
    Chemical Manufacturers Assn. et al. v. Natural Resources Defense Council, Inc., et al.; and United States Environmental Protection Agency v. Natural Resources Defense Council, Inc., et al.
   C. A. 3d Cir. Motion of Chamber of Commerce of the United States for leave to file a brief as amicus curiae granted. Certiorari granted, cases consolidated, and a total of one hour allotted for oral argument. Reported below: 719 F. 2d 624.  