E. I. du Pont de Nemours & Co. et al. v. Train, Administrator, Environmental Protection Agency; and Train, Administrator, Environmental Protection Agency v. E. I. du Pont de Nemours & Co. et al.

C. A. 4th Cir. [Certiorari granted, 426 U. S. 947.] Mo tion of Appalachian Power Co. et al. for leave to file a brief as amid curiae granted. Mr. Justice Powell took no part in the consideration or decision of this motion.