Ascon Landfill Site
Huntington Beach, California
Project Navigator, Ltd.
Public Announcements

APRIL 2018

Completed oil well plug and abandonment activities.


Completed Lagoon 5 solidification activities.

DTSC Public Workshop on current remedial work at Ascon Landfill Site: 6 p.m. - 9 p.m., Wednesday, November 1, at Edison High School cafeteria, 21400 Magnolia Street.


Lagoon 5 solidification begins at the Ascon Site. Air quality monitoring and misting equipment will be visible to the public. Misters help mitigate potential dust and odor, and use food grade, non-hazardous, biodegradable citrus concentrate mixed with water.

JULY 2017

Mobilization for the Lagoon 5 solidification, to prepare for the abandonment of two oil wells dating to the 1920s. See July 2017 DTSC fact sheet on this website at "Fact Sheets."

MAY 2017

Received DTSC approval of Lagoon 5 Solidification Work Plan.

Received DTSC approval of Final Remedial Design.

APRIL 2017

Submitted a Coastal Development Permit (CDP) application package for Lagoon 5 solidification and oil well abandonment preparation field work to the City of Huntington Beach.

MARCH 2017

Received South Coast Air Quality Management District (SCAQMD) Rule 1150/1166 permit for the preliminary phase of the remedial action and oil well abandonment site preparation activities.

Conducted the semi-annual groundwater monitoring and sampling event, per the DTSC-approved Interim Groundwater Monitoring Workplan.

Submitted the Lagoon 5 Solidification Work Plan to DTSC.


Recent large storm events are filling the storm water detention basin in the southeast region of the Ascon Landfill Site. The basin is designed to detain water on the property and allow surface rainwater to discharge into the City storm drain system, per our Industrial Storm Water Pollution Prevention Plan (SWPPP) for the Ascon Landfill Site.

Crews routinely conduct maintenance and installation of storm water best management practices (BMPs). Crews continue to inspect to ensure the storm water system is working as designed and according to the SWPPP.

We have observed ponding unrelated to the Ascon Landfill Site on Magnolia Street and on adjacent properties. Ponding on Magnolia Street slows the rate at which rainfall can be discharged into the City's storm drain system, about which the City of Huntington Beach public works department has been advised.


Submitted Final Remedial Design to DTSC.


Submittal of Coastal Development Permit (CDP) and Conditional Use Permit (CUP) to the City of Huntington Beach for local permits necessary to conduct final remedy.


The Final Environmental Impact Report (EIR) was finalized in May 2015, and was certified on June 18, 2015.

DTSC approved the Final Remedial Action Plan (RAP) on June 19, 2015.

The Notice of Determination (NOD) for the EIR and RAP was filed with the State Clearinghouse on June 22, 2015.


A Draft Environmental Impact Report (EIR) that addressed the environmental impacts of implementing the RAP was circulated for public review and comment by DTSC from August 29th, 2013, to October 14th, 2013.

DTSC determined that a Recirculated Draft EIR was appropriate to consider the inclusion of an additional truck haul route needed to address short-term traffic impacts previously analyzed in the Draft EIR.

The resulting changes to the traffic and noise impacts analyzed in the 2013 Draft EIR were presented in the Recirculated Draft EIR.

A 45-day public comment period was held from October 6th, 2014, through November 21st, 2014, and DTSC hosted a public meeting on November 6th, 2014, to receive public comments on the Recirculated Draft EIR.



This website was established to provide site-related information and current site activities to the public. The website is maintained by the Ascon Responsible Parties (RPs) and is a communication tool for all stakeholders.

The Ascon Landfill Site is a 38-acre property located at the southwest corner of Magnolia Street and Hamilton Avenue and was utilized as a licensed landfill from the 1930s to the early 1980s. With the oversight of the California Department of Toxic Substances Control, the RP's are preparing for Ascon's remediation.

Envirostor is the official public archive of the California Department of Toxic Substances Control.
This web site is operated by Project Navigator, Ltd., on behalf of the Ascon Landfill Site Responsible Parties.
This website is not endorsed by DTSC, and its contents do not necessarily reflect DTSC's viewpoints or positions.