You can view the Safety Data Sheets (SDS) for all products currently used at Ascon for odor suppression and weed abatement on our website. Visit our Cleanup Activities webpage and scroll down to “Site Documents”.


  • Site maintenance personnel will be onsite on Wednesday, October 14th, to install exterior Site signage on the Magnolia Street and Hamilton Ave gates.

  • 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.
  • Regular inspection of the “Pit F” tent will be conducted.

  • Supplies needed for ongoing Site maintenance and stormwater management may be delivered.

  • Please note there are grading and other 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 Actively Monitoring Air Quality on this website. Data are 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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