
    No. 79-1711.
    No. 79-1754.
    No. 79-1760.
    No. 80-12.
    Middlesex County Sewerage Authority et al. v. National Sea Clammers Assn. et al.; Joint Meeting of Essex and Union Counties v. National Sea Clammers Assn. et al.; City of New York et al. v. National Sea Clammers Assn. et al.; and Environmental Protection Agency et al. v. National Sea Clammers Assn. et al.
   C. A. 3d Cir. [Certiorari granted, 449 U. S. 917.] Motion of petitioners in No. 79-1711 for leave to file a supplemental brief after argument granted.  