This is a partial list of consultants, contractors, and subcontractors decommissioning the Caltech Submmillimeter Observatory on behalf of Caltech.

• M3 Engineering & Technology; Tucson
  Lead consultant for planning phase
• Goodfellow Brothers, Inc.; Waikoloa
  General Contractor

• AECOM; Honolulu
• Alakai Builders; Pahoa
• American Electric Co., LLC; Hilo
• Apana Crane Service; Kamuela
• ASM Affiliates; Hilo
• Austin, Tsutsumi & Associates, Inc.; Honolulu
• Big Island Container Sales and Rentals, LLC; Hilo
• Bottomley Builders; Kailua Kona
• Conen's Freight Transport; Hilo
• Edwin Deluz Trucking and Gravel, LLC; Kamuela
• D & M Hydraulics Sales & Service, Inc.; Hilo
• ENPRO Environmental; Kailua
• Enterprise Rent-a-Car; Hilo and Kailua Kona
• EnviroServices & Training Center; Honolulu
• Hastings & Pleadwell; Hilo
  A Woman-Owned Business
• Hawaiian Electric Company, Inc.; Hilo
• Hertz; Hilo
• Intera Inc.; Kailua
• Isemoto Contracting Co., Ltd.; Hilo
• Island Topsoil; Kamuela
• Islandwide Fencing, Inc.; Hilo
• Kona Lua; Kailua Kona
• Lehua Environmental; Waimea
• Leleiwi Electric; Hilo
• Northwest Demolition; Kapolei
  Minority-Owned Business Enterprise; Alaska Native Corporation
• Oasis Environmental Group, LLC; Kapolei
• Okahara and Associates, Inc.; Hilo
• Planning Solutions, Inc.; Honolulu
• Sunbelt Rentals; Hilo
• Sustainable Resources Group International, Inc.; Kailua
• SWCA Environmental Consultants; Honolulu
• TayMade Productions LLC; Kailua Kona
  Cultural Monitor; Minority Woman-Owned Business and Kanaka Maoli (Native Hawaiian) Corporation
• Terminix; Hilo
• Unitek Insulation, LLC; Pearl City