Latest Site Updates

Weekly Site Activities | DTSC Fact Sheets and Notices

Upcoming Ascon Saturday Site Work, 10/3

October 2, 2026

Upcoming Ascon Saturday Site Work, 10/3

Did you know? The Ascon Team will work this Saturday, October 3, 2026, to continue building the engineered cap. Crews will be onsite from 7 a.m. to 5 p.m. with louder heavy equipment work starting after 9 a.m.

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Field work at the Ascon Landfill Site during the weeks of September 28 and October 5

September 28, 2026

Field work at the Ascon Landfill Site during the weeks of September 28 and October 5

Did You Know? The Ascon team will need to work on some Saturdays in the next three months to prepare the Site for the upcoming rainy season and to complete the construction of the landfill cap. We appreciate your patience and understanding during this work

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Upcoming Ascon Saturday Site Work, 9/26

August 25, 2026

Upcoming Ascon Saturday Site Work, 9/26

DID YOU KNOW? Tomorrow, Saturday, September 26, Ascon plans to conduct work onsite to prepare the Site for the upcoming rainy season and advance engineered cap construction. To minimize any inconvenience to our neighbors, field work involving louder noise from heavy equipment will not begin until 9 a.m.

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DTSC Fact Sheets and Regulatory Notices

SCAQMD Ascon Rule 1150/1166 Mitigation Plan Notification
April 2025
DTSC Community Update
August 2023
DTSC Community Update
May 2023
DTSC Community Update
August 2022
DTSC Community Update and Community Survey
November 2021
DTSC Frequently Asked Questions (FAQs) Regarding PIT F Remediation
April 2021
DTSC Pit F Community Update
April 2021
DTSC Work Notice: Odor Assessment Field Investigation
January 2021
DTSC Work Notice: Installation of Interim Fence at Northeast Corner of Ascon
December 2020
DTSC Work Notice: Soil Screening Site Investigation Field Activity
October 2019

DTSC Ordered Temporary Suspension of Work Activities
August 2019
DTSC Public Workshop Announcement
June 2019
DTSC Community Final Remedy Update
November 2018
DTSC Preliminary Phase of Remedial Work Approved
October 2017
DTSC Lagoon Solidificaiton & Oil Well Abandonment Update
July 2017
DTSC Work Notice: Sampling Activities Planned for the Week of August 22, 2016
August 2016
DTSC Certifies Final Environmental Impact Report & Approves RAP
June 2015
Ascon Environmental Impact Report Announcement of Public Review
October 2014
DTSC Community Notice Fact Sheet
June 2014
DTSC Public Meeting Announcement on RAP and Draft EIR
August 2013

DTSC Public Notice: Public Comment Period for Draft EIR and Draft RAP
August 2013
DTSC Ascon Announcement of Scoping Meetings and Draft EIR
April 2013
DTSC Post Interim Removal Measure Update
December 2011
DTSC Interim Removal Measure Activities Update
December 2010
DTSC Public Notice: Exemption, Determination and Addenda
December 2010
DTSC Work Notice: Start Work Announcement
June 2010
DTSC Landfill Draft Interim Removal Measure Workplan
October 2009
DTSC Work Notice: Excavation and Transport of Landfill Material and Soil
July 2005
DTSC Emergency Action Announcement
June 2005

DTSC Additional Studies Announcement
March 2004
DTSC Remedial Investigation/Feasibility Study Summary
March 2003
DTSC Project Update Introduction
September 2000
DTSC Ascon Site Upcoming Pilot Testing
October 1999
DTSC Upcoming Pilot Testing Announcement
March 1999
DTSC Ascon Mailing & Comment Coupon
August 1996
DTSC Interim Removal Begins Announcement
November 1991
DTSC Ascon Community Meeting Announcement
July 1991

Latest Site Updates

All Updates

Upcoming Ascon Saturday Site Work, 10/10

Upcoming Ascon Saturday Site Work, 10/3

Field work at the Ascon Landfill Site during the weeks of September 28 and October 5

Upcoming Ascon Saturday Site Work, 9/26

Field work at the Ascon Landfill Site during the weeks of September 14 and September 21

Upcoming Ascon Clean Soil Import Work

Field work at the Ascon Landfill Site during the week of August 31

Field work at the Ascon Landfill Site during the weeks of August 24 & August 31

Field work at the Ascon Landfill Site during the weeks of August 10 & August 17

Field work at the Ascon Landfill Site during the weeks of July 27 & August 3

DTSC Fact Sheets and Regulatory Notices

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Latest Site Updates

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DTSC Fact Sheets and Regulatory Notices

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