You can sign up for Ascon Alert, an opt-in community alert system, by texting “Ascon” to 99411, or by completing a form here and submitting it to [email protected]. You can also find step-by-step visual instructions on how to sign up online or by text here.

All personal information submitted is confidential and is not shared with any other parties.


  • MEMORIAL DAY HOLIDAY: There is no field activity at the Ascon site on the Memorial Day holiday. Security remains onsite 24/7, including on Memorial Day. The California Department of Toxic Substances Control (DTSC) has permitted a brief pause on daily air sampling and monitoring over the holiday weekend. Please see more details under Air Monitoring below.

  • MAINTENANCE: Regular maintenance will be conducted within the Site and around the perimeter fence areas.

  • PIT F TENT MAINTENANCE AND PREPARATION:Workers are conducting preparations and maintenance on the large white tent on the east side of Ascon near Magnolia Street in advance of future remedial work inside the tent anticipated to start in June. Learn more with our Pit F explainer and watch a Pit F work overview video here.

    You may see: Workers, materials, and large equipment like manlifts and water trucks may be arriving or be removed from the Site. This includes turning on equipment like the air treatment system for operational checks. You may hear periodic sounds, like vehicle backup signaling required for worker safety, and sounds from air treatment system testing. There is no remedial excavation work occurring during this time.

  • SECURITY: 24-hour onsite security continues. Security is not always 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. The last inspection with Orange County Mosquito and Vector Control District was Tuesday, May 18.
  • NEARBY ACTIVITIES: Please note there are automobile storage activities that may generate noise or dust unrelated to Ascon at the former tank farm property, south of Ascon and adjacent to Magnolia Street.


The California Department of Toxic Substances Control (DTSC) has permitted a brief pause on daily air sampling and monitoring both onsite and at offsite locations to allow our personnel to be with their families over the holiday, beginning Friday, May 28, at approximately 7 a.m. Additionally, onsite equipment for air monitoring stations will be refurbished on Tuesday, June 1, to prepare for upcoming work. The air sampling and monitoring will resume at approximately 7 a.m., Wednesday June 2.

For more information about Ascon’s air monitoring, data sharing, and live streaming weather conditions from the Ascon site, 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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