Decommissioning

The 2010 Decommissioning Plan for the Maunakea Observatories (pdf), a sub-plan of the Maunakea Comprehensive Management Plan (pdf), describes a 4-step decommissioning process for observatories to follow when preparing a Site Decommissioning Plan (SDP) for removal of an observatory followed by site restoration. 

Site Decommissioning Plan (SDP)

  1. Notice of Intent (NOI)
  2. Environmental Due Diligence, including:
    a) Hazardous Material Assessment
    b) Phase 1 Environmental Site Assessment
    c) Phase 2 Environmental Site Assessment – if needed
    d) Remedial Action Plan – if needed
  3. Site Deconstruction & Removal Plan
  4. Site Restoration Plan

The Office of Maunakea Management (OMKM) role in decommissioning is to coordinate the overall process.  OMKMs role also includes communication with the State of Hawaiʻi, Department of Land & Natural Resources (DLNR).  The respective observatory is responsible for preparing the Site Decommissioning Plan, completing compliance and permit documents, and implementing decommissioning.

All components of each SDP shall be approved by Maunakea Management Board followed by approval by the UH President. The Deparment of Land & Natural Resources - Office of Conservation & Coastal Lands reserves the right to request modification of the SDP and require a Conservation District Use Permit (CDUP).

UH-Approved Decommissioning Documents

Caltech Submillimeter Observatory (CSO)

  1. Notice of Intent (pdf), and Addendum with updated Site Plan (pdf)
  2. Environmental Due Diligence
    a) Hazardous Material Assessment (pdf; Asbestos, Lead Pain and Mold Survey Report)
    b) Phase I Environmental Site Assessment (pdf)
    c) Phase II Environmental Site Assessment - pending
    d) Remedial Action Plan - to be determined if necessary
  3. Site Deconstruction & Removal Plan - in preparation
  4. Site Restoration Plan - in preparation

Visit the CSO website for periodic updates on the current draft of these documents and related compliance materials.
Sign up to receive email updates on the status of CSO decommissioning

UH Hilo Hoku Kea (Hoku Kea)

  1. Notice of Intent (pdf)
    For additional information see also the Final Environmental Assessment: University of Hawai‘i 24-inch (0.6 meter ) Telescope Observatory Renovation (pdf)
  2. Environmental Due Diligence
    a) Hazardous Material Assessment - in preparation
    b) Phase I Environmental Site Assessment - in preparation
    c) Phase II Environmental Site Assessment - to be determined if necessary
  3. Site Deconstruction & Removal Plan - in preparation
  4. Site Restoration Plan - in preparation

The State of Hawaiʻi, Department of Land & Natural Resources - Office of Conservation & Coastal Lands also provides access to astronomy-related documents, including decommissioning.


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