> BLACKROCK ASPHALT AND CONCRETE COATINGS, INC. Washington Since: 2005 BLACKROCK ASPHALT AND CONCRETE COATINGS, INC.
> CASCADE MECHANICAL CONTRACTORS, INCORPORATED Washington Since: 1989 CASCADE MECHANICAL CONTRACTORS, INCORPORATED
> PACIFIC NW STEEL & PANEL CONSTRUCTION, LLC Washington Since: 2019 PACIFIC NW STEEL & PANEL CONSTRUCTION, LLC
