2015 AOC Tank Infrastructure Improvements: Risk and Vulnerability Assessment

The 2015 Administrative Order on Consent (AOC) requires the Navy and Defense Logistics Agency (DLA) to assess the risk posed by the facility to groundwater resources. The risk assessment required by the AOC will evaluate the likelihood of various events that may result in the release of fuel into the environment. These initiating events could include human error, mechanical failures, fires, or earthquakes. The assessment will study these types of events and cascading scenarios to estimate potential releases and their consequences. This risk assessment will provide important information to support contaminant modeling and tank upgrade decisions.

Work to satisfy this requirement is ongoing. On September 23, 2019 EPA and the Hawai'i Department of Health approved the Navy and DLA’s risk assessment that accounts for internal events such as human error and mechanical failure. Additional work to assess the risk posed by external events such as earthquakes, fires and flooding is still underway, and the Navy and DLA have submitted a scope of work for this next phase to EPA and the Hawai'i Department of Health for review and approval or disapproval.

The Navy and DLA also provided EPA and the Hawai'i Department of Health with a report, titled The Red Hill Alternative Location Study, that compares the risks and benefits between the current fuel storage facility location and alternative fuel storage facility locations.

Please note that redacted versions of the risk assessment and location study are available for viewing at right. Due to Federal contracting regulations and national security concerns, some information, such as the cost of constructing the new facility and specific information on the facilities’ capacities, cannot be publicly released. The Navy’s summary of the assessment results is also available.

• Extension request to submit the Scope of Work for Section 8.2 Risk and Vulnerability Assessment Phase 2 (pdf) (833.56 KB, 03/04/2022)
  Revised Scope of Work (SOW) from the Navy for Administrative Order on Consent Section 8.2 Risk and Vulnerability Assessment phase 2 for the Red Hill Bulk Fuel Storage Facility. Submitted March 4, 2022.
• Navy Response to September 2, 2021 Regulatory Agencies Letter on Section 8.2 (pdf) (116.53 KB, 11/01/2021)
  Navy response to Regulatory Agencies' September 2, 2021 Notice of Deficiency letter regarding Administrative Order on Consent Section 8.2 Risk and Vulnerability Assessment scope of work and request for extension to submit revised SOW.
• Notice of Deficiency (pdf) (6.7 MB, September 2, 2021)
  Letter by Regulatory Agencies that identifies deficiencies in Navy's Phase 2 Scope of Work dated December 23, 2020.
• US Navy Risk and Vulnerability Assessment Phase 2 Scope of Work (pdf) (1.96 MB, December 23, 2020)
  Phase 2 Scope of Work Document submitted by the Navy in response to EPA Oct 2020 Notice of Deficiencies Letter.
• Notice of Deficiency and Opportunity to Cure (pdf) (1.8 MB, October 23. 2020)
  Risk and Vulnerability Assessment ("RVA") Phase 2 Proposed Scope of Work for the Red Hill Administrative Order on Consent ("AOC") Statement of Work ("SOW") Section 8, Notice of Deficiency and Opportunity to Cure.
• Red Hill Scope of Work for Second Phase of Risk Assessment (pdf) (1.27 MB, November 11, 2019)
  Scope of work for risk assessment phase that studies the potential risk posed by external events.
• Approval of Internal Events Risk Assessment with Additional Work Requirements (pdf) (2.57 MB, September 23, 2019)
  Letter by Regulatory Agencies that requires the Navy to perform additional work and approves the Navy’s risk assessment for internal events risk.
• Navy Summary of Risk Assessment and Transmittal Letter (pdf) (1.63 MB, May 29, 2019)
  Navy’s summary of Risk Assessment thus far and description of additional risk assessment work.
• Red Hill Internal Events Risk Assessment (Redacted) (pdf) (9.55 MB, November 12, 2018)
  Quantitative Risk and Vulnerability Assessment submitted by the Navy and DLA.
• Red Hill Alternative Location Study (Redacted) (pdf) (6.06 MB, February 5, 2018)
  Navy and DLA study that identifies 12 potential alternative locations for the Red Hill Bulk Fuel Storage Facility along the southern side of Oahu.