Work is happening onsite this week to complete the interim fence at the corner of Hamilton Ave and Magnolia Street. Once remediation is complete, a permanent residential-grade fence will be installed. Visit The Future of the Site to learn more about the final look for the remediated Ascon Site.

Thumbnail of Site Documents section


  • Active Work: Workers and supplies will arrive onsite to complete the installation of interim fencing near the intersection of Hamilton Avenue and Magnolia Street beginning Monday, December 14. The work is expected to be completed within 2 to 3 days. See DTSC’s Work Notice here.

    You may see: Workers using a gas-powered driver to push into place 20-25 posts along the top of the slope near the intersection and fastening the chain-link fabric and wind screen to the posts. Fence repairs will also be performed near the intersection and by the Site gates.

  • SECURITY: 24-hour onsite security continues. Security may not be visible at the entrance gates. The Ascon security personnel are primarily within the Site conducting daytime and nighttime patrols of the 38-acre property. In addition to 24/7 onsite security, there are regular visits by air quality technicians, Site inspectors and Site maintenance personnel.


    • DTSC continues its ongoing weekly inspections of Ascon.
    • City of Huntington Beach continues its regular stormwater inspections of Ascon.
    • Regular inspection of the “Pit F” tent will be conducted.
    • Regular inspections are conducted by Orange County Mosquito and Vector Control District of the onsite detention basins and other areas of the Ascon Site where water may be detained.
  • NEARBY ACTIVITIES: Please note there are activities unrelated to Ascon at the former tank farm property, south of Ascon and adjacent to Magnolia Street.



Air monitoring continues both on the Ascon Site and at community locations. For more information about Ascon’s air monitoring and data sharing, please visit the Actively Monitoring Air Quality page on this website. Data is submitted to DTSC and shared on their online document archive, Envirostor. To view archived air monitoring results posted by DTSC on Envirostor, click on “Community Involvement Documents” and scroll to “Updates and Information.”


Work at Ascon is being conducted under Site safety protocols regarding COVID-19. These practices apply to air quality professionals and other team members who may be outside the fence conducting work. We ask for the community’s support of these safety practices by maintaining physical distancing to allow these professionals to focus on their work and stay safe.

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