
    No. 73-690.
    Air Pollution Variance Board of Colorado v. Western Alfalfa Corp.
   Ct. App. Colo. [Certiorari granted, 414 U. S. 1156.] Motion of the Solicitor General for leave to participate in oral argument as amicus curiae in support of petitioner granted and 15 minutes allotted for that purpose. Respondent allotted 15 additional minutes for oral argument.  