Nos. 85-7154, 85-7259. Argued and Submitted September 5, 1985. Decided October 3, 1985. J. Markham Marshall, Preston, Thorgrimson, Ellis Holman, Seattle, Wash., for petitioner. Elinor Hadley Stillman, NLRB, Washington, D.C., for respondent. Petition for Review and Cross-Application for Enforcement of an Order of the National Labor Relations Board. Before WRIGHT, PREGERSON, and ALARCON, Circuit Judges. OPINION ALARCON, Circuit Judge: US Ecology, Inc. (hereinafter US Ecology) seeks review of the National