DID YOU KNOW?

Infrastructure work related to future stormwater pipe installation requiring traffic control with lane diversion along Hamilton Avenue is expected to begin this week starting today, November 3, 2025. Lane diversions are expected to occur from approximately 8:30 a.m. – 5 p.m. Lane diversions are not expected to occur on weekends. This work is expected to be completed in approximately 6 – 8 weeks, with lane diversions occurring for approximately 2 – 3 weeks intermittently during this period.

Learn more about this work in the FIELD WORK section below. You can also reach out with questions to the Ascon community information line, 714-388-1825, or email info@asconhb.com.

SITEWIDE ACTIVITIES

  • FIELD WORK: Excavation work will continue in the western and central areas of Ascon this week, depending on weather and Site conditions.

    Infrastructure work related to future stormwater pipe installation requiring traffic control with lane diversion along Hamilton Avenue is expected to begin today, November 3.

    Here is what you can expect to see:

    • Lane diversions are expected to occur from approximately 8:30 a.m. – 5 p.m., beginning on November 3.
    • Traffic control equipment and personnel will be present to support traffic, as needed.
    • Lane diversions are not expected to occur on weekends, unless required by maintenance or the City.
    • A portion of the barrier fence between the Ascon Site and Hamilton Avenue was removed on Friday, October 31, and replaced with a temporary chain link fence with privacy screens for this work. The barrier fence will be restored upon completion of this work.
    • This work is expected to take approximately six – eight weeks to complete. The lane diversion is expected to occur for two – three weeks intermittently during this period when work is conducted offsite.
    • The Ascon information table will be set up in Edison Park across from the Site during Hamilton Avenue lane diversion work to answer community questions.

    An offsite odor monitoring technician, in an Ascon-labeled orange safety vest, monitors outside the Site.

    During this phase of work, personnel may be onsite on Saturdays to conduct Site work and equipment maintenance, from 7 a.m. – 5 p.m.

  • INSPECTIONS:

    • DTSC is the lead regulatory agency for the Ascon project and conducts inspections at Ascon. Their inspection reports can be found on the online DTSC database, Envirostor.
    • The City of Huntington Beach continues its regular stormwater inspections of Ascon. Ascon remains in compliance with stormwater pollution prevention requirements.
    • Regular inspections are conducted by Orange County Mosquito and Vector Control District of areas of the Ascon Site where water may be detained. Active mitigation measures are implemented by Vector Control to protect the community, as well as onsite workers, from mosquitoes.

  • SECURITY: 24-hour, 7 days per week, onsite security continues during construction activities. Security is not always visible at the entrance gates. Unannounced visitors without official business or agency oversight of Ascon are not permitted to enter the Site. Trespassers will be reported to the Huntington Beach Police Department and DTSC.

    You may see: You may see flashlights or headlights from vehicles after dark concluding daily activities and providing security at the 38-acre Site.

    In an emergency: If you see or hear something that appears urgent, please call the Huntington Beach Police Department at 911 first, then the Ascon community information line, 714-388-1825. Calls to the Ascon information line are automatically logged and relayed by text and email to the Ascon team.

AIR MONITORING

Dust and total VOC monitoring is conducted 24/7 at upwind and downwind stations on the Ascon Site documenting effective dust control measures. This is in addition to 24/7 air monitoring at the neighborhood stations.

Where to find air monitoring data and live stream weather: Sitewide and live streaming weather conditions from the Ascon site are found on the Actively Monitoring Air Quality page on asconhb.com. To view archived air monitoring results posted by DTSC on Envirostor — including weekly field inspections by DTSC that include air monitoring observations — click on “Community Involvement Documents” and scroll to “Updates and Information.”

SAFETY MESSAGE

SEE SOMETHING? HAVE A QUESTION? Call our information line: 714-388-1825 or email us at info@asconhb.com

DRONES: Drone flights over Ascon can create worker and Site safety issues. Please don’t fly drones over sensitive onsite equipment and the power lines along the perimeter of Ascon. We appreciate the community’s assistance.

ENTRANCE AND EXIT GATES: Entering the Ascon site is prohibited to those who are not authorized. The community is asked to keep a safe distance from both entrance and exit gates at Ascon, especially during soil importing, and refrain from parking, walking, or standing in these areas. The gates on Magnolia Street and Hamilton Avenue may open unexpectedly for workers and site inspections, as well as supply delivery and removal.

PEDESTRIANS: Your safety is important! Pedestrians have been observed walking next to Ascon along Magnolia and Hamilton streets (adjacent to the concrete fence base where there currently is no sidewalk). We encourage pedestrians to observe public pathway signage and use the sidewalks on the east side of Magnolia and the north side of Hamilton.

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