Navy to start degassing tenth Red Hill Facility tank; air quality monitoring continues

JOINT BASE PEARL HARBOR-HICKAM, Hawaii -- Navy Closure Task Force-Red Hill (NCTF-RH) will begindegassingtank12at the Red Hill Bulk Fuel Storage Facility (RHBFSF)this week, marking another significant milestone in the facility's decommissioning process. Tank decommissioning is a multi-stage process involving defueling, venting, cleaning,and ultimately, thepermanent closure of each tank.

With approval from the Hawaii Department of Health (DOH), NCTF-RH will conduct the safe and deliberate venting (degassing) oftank12. This tank is thetenthof14to undergothiscriticalinitialstep in preparinga tankfor cleaning and decommissioning. Six of the facility’s 20 tanks were empty and out of service before defueling began.Further information on the decommissioning process, including tank cleaning procedures and pipeline removal, is available on the NCTF-RH website: https://www.navyclosuretaskforce.navy.mil/Portals/101/20260302%20NCTF-RH%20Operations%20Dashboard.pdf.

The degassing phase removes volatile organic compounds (VOCs) by circulating clean air from the bottom of the tank, forcing emissions through a ventilation system. While this process ensures a safer working environment within the tanks, NCTF-RH is committed to safeguarding the surrounding community andmaintainsa comprehensive air quality monitoring program.

Nine air quality monitoring (AQM) stations are strategicallylocatedin and around RHBFSF, including one at the Halawa Correctional Facility. These stations continuously track air quality, measure emission levels, and gather real-time atmospheric data, such as wind speed, wind direction, temperature, humidity, and barometric pressure. NCTF-RH closelymonitorsthis data to ensure VOC emissions from ventilation remain well below the DOH's limit of 38 parts per million by volume (ppmv).

As a commitment to the community, NCTF-RH ensuresAQM data is readily available to the public during and after the degassing phase. Access real-time data updates on the NCTF-RH mobile app (hourly updates during degassing) or on the NCTF-RH website (daily updates): https://www.navyclosuretaskforce.navy.mil/Tank-Ventilation/Air-Quality-Monitoring-AQM/.

In the unlikely event of an exceedance, NCTF-RH willimmediatelynotify regulators, the Hawaii Emergency Management Agency, the Honolulu Department of Emergency Management, and the public through the NCTF-RH app, website, and press release. For any questions or concerns, please contact the Navy Call Center at 808-210-6968.

For more information about the NCTF-RH and its mission, visit www.navyclosuretaskforce.navy.mil. Download the free NCTF-Red Hill mobile app from the Apple App Store or Google Play store by searching for "NCTF-Red Hill."

SAFE. DELIBERATE. ENGAGED. COMMITTED. - NCTF-RH -