Part of stormwater management at Ascon includes monitoring forecasted storms. When a storm produces ½ inch of precipitation or more and results in a discharge, Ascon’s Qualified Stormwater Practitioner conducts stormwater sampling. Prior Ascon stormwater monitoring results show that stormwater contained little to no constituents of concern from the Site. You can find results at smarts.waterboards.ca.gov by searching “Facility/Site Name” Ascon

Ascon’s Stormwater Pollution Prevention Plan (SWPPP) is enforced by the City of Huntington Beach and Santa Ana Regional Water Quality Control Board.


  • MAINTENANCE: Regular maintenance will be conducted within the Site and around the perimeter fence areas, including onsite activity regarding installation or maintenance of stormwater management measures.

  • SITEWIDE ODOR ASSESSMENT: Preparation for scheduled work began the week of January 19 and will continue through mid-March.

    • Work will be conducted between the hours of 7 a.m. and 6 p.m.
    • There will be periodic noise during boring drilling

    You may see: Workers, materials and equipment like fencing, stormwater management materials (e.g., sandbags), water trucks and small truck-mounted soil boring rigs may be arriving onsite.

  • 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.
  • 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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