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Search for:

Cleanup Activities
Safety Commitment
Site Updates
Air Monitoring
Future of the Site
About
Explainers
Contact

Cleanup Activities
Safety Commitment
Site Updates
Air Monitoring
Future of the Site
About
Explainers
Contact

VOC Monitoring Results

Onsite | Offsite

Onsite VOC Monitoring Results

February 18th – February 25th, 2024
February 11th – February 18th, 2024
February 4th – February 11th, 2024
January 28th – February 4th, 2024
January 21st – January 28th, 2024
January 14th – January 21st, 2024
January 7th – January 14th, 2024
December 31st, 2023 – January 7th, 2024
December 17th – December 24th, 2023
December 10th – December 17th, 2023
December 3rd – December 10th, 2023
November 26th – December 3rd, 2023
November 12th – November 19th, 2023
November 5th – November 12th, 2023
October 29th – November 5th, 2023
October 22nd – October 29th, 2023
October 15th – October 22nd, 2023
October 8th – October 15th, 2023
October 1st – October 8th, 2023
September 24th – October 1st, 2023
September 17th – September 24th, 2023
September 10th – September 17th, 2023
September 3rd – September 10th, 2023
August 27th – September 3rd, 2023
August 20th – August 27th, 2023
August 13th – August 20th, 2023
August 6th – August 13th, 2023
July 30th – August 6th, 2023
July 23rd – July 30th, 2023
July 16th – July 23rd, 2023
July 9th – July 16th, 2023
July 2nd – July 9th, 2023
June 25th – July 2nd, 2023
June 18th – June 25th, 2023
June 11th – June 18th, 2023
June 4th – June 11th, 2023
May 28th – June 4th, 2023
May 21st – May 28th, 2023
May 14th – May 21st, 2023
May 7th – May 14th, 2023
April 30th – May 7th, 2023
April 9th – April 16th, 2023
April 2nd – April 9th, 2023
March 26th – April 2nd, 2023
March 19th – March 26th, 2023
March 12th – March 19th, 2023
March 5th – March 12th, 2023
February 26th – March 5th, 2023
February 19th – February 26th, 2023
February 12th – February 19th, 2023
February 5th – February 12th, 2023
January 29th – February 5th, 2023
January 22nd – January 29th, 2023
January 15th – January 22nd, 2023
January 8th – January 15th, 2023
January 1st – January 8th, 2023
December 18th – December 25th, 2022
December 11th – December 18th, 2022
December 4th – December 11th, 2022
November 27th – December 4th, 2022
November 13th – November 20th, 2022
November 6th – November 13th, 2022
October 30th – November 6th, 2022
October 23rd – October 30th, 2022
October 16th – October 23rd, 2022
October 9th – October 16th, 2022
October 2nd – October 9th, 2022
September 25th – October 2nd, 2022
September 18th – September 25th, 2022
September 11th – September 18th, 2022
September 4th – September 11th, 2022
August 28th – September 4th, 2022
August 21st – August 28th, 2022
August 14th – August 21st, 2022
August 7th – August 14th, 2022
July 31st – August 7th, 2022
July 24th – July 31st, 2022
July 17th – July 24th, 2022
July 10th – July 17th, 2022
July 3rd – July 10th, 2022
June 26th – July 3rd, 2022
June 19th – June 26th, 2022
June 5th – June 12th, 2022
May 29th – June 5th, 2022
May 22nd – May 29th, 2022
May 15th – May 22nd, 2022
May 8th – May 15th, 2022
May 1st – May 8th, 2022
April 24th – May 1st, 2022
April 17th – April 24th, 2022
April 10th – April 17th, 2022
April 3rd – April 10th, 2022
March 27th – April 3rd, 2022
March 20th – March 27th, 2022
March 13th – March 20th, 2022
March 6th – March 13th, 2022
February 27th – March 6th, 2022
February 20th – February 27th, 2022
February 13th – February 20th, 2022
February 6th – February 13th, 2022
January 30th – February 6th, 2022
January 23rd – January 30th, 2022
January 16th – January 23rd, 2022
January 9th – January 16th, 2022
January 2nd – January 9th, 2022
December 19th – December 26th, 2021
December 12th – December 19th, 2021
December 5th – December 12th, 2021
November 28th – December 5th, 2021
November 14th – November 21st, 2021
November 7th – November 14th, 2021
October 31st – November 7th, 2021
October 24th – October 31st, 2021
October 17th – October 23rd, 2021
October 10th – October 17th, 2021
October 3rd – October 10th, 2021
September 26th – October 3rd, 2021
September 19th – September 26th, 2021
September 12th – September 19th, 2021
September 5th – September 12th, 2021
August 29th – September 5th, 2021
August 22nd – August 29th, 2021
August 15th – August 22nd, 2021
August 8th – August 15th, 2021
August 1st – August 8th, 2021
July 25th – August 1st, 2021
July 18th – July 25th, 2021
July 11th – July 18th, 2021
July 4th – July 11th, 2021
June 27th – July 4th, 2021
June 20th – June 27th, 2021
June 13th – June 20th, 2021
June 6th – June 13th, 2021
May 30th – June 6th, 2021
May 23rd – May 30th, 2021
May 16th – May 23rd, 2021
May 9th – May 16th, 2021
May 2nd – May 9th, 2021
April 25th – May 2nd, 2021
April 18th – April 25th, 2021
April 11th – April 18th, 2021
April 4th – April 11th, 2021
March 28th – April 4th, 2021
March 21st – March 28th, 2021
March 14th – March 21st, 2021
March 7th – March 14th, 2021
February 28th – March 7th, 2021
February 21st – February 28th, 2021
February 14th – February 21st, 2021
February 7th – February 14th, 2021
January 31st – February 7th, 2021
January 24th – January 31st, 2021
January 17th – January 24th, 2021
January 10th – January 17th, 2021
January 3rd – January 10th, 2021
December 20th – December 27th, 2020
December 13th – December 20th, 2020
December 6th – December 13th, 2020
November 29th – December 6th, 2020
November 15th – November 22nd, 2020
November 8th – November 15th, 2020
November 1st – November 8th, 2020
October 25th – November 1st, 2020
October 18th – October 25th, 2020
October 11th – October 18th, 2020
October 4th – October 11th, 2020
September 27th – October 4th, 2020
September 20th – September 27th, 2020
September 13th – September 20th, 2020
September 6th – September 13th, 2020
August 30th – September 6th, 2020
August 23rd – August 30th, 2020
August 16th – August 23rd, 2020
August 9th – August 16th, 2020
August 2nd – August 9th, 2020
July 26th – August 2nd, 2020
July 19th – July 26th, 2020
July 12th – July 19th, 2020
July 5th – July 12th, 2020
June 28th – July 5th, 2020
June 21st – June 28th, 2020
June 14th – June 21st, 2020
June 7th – June 14th, 2020
May 31st – June 7th, 2020
May 26th – May 31st, 2020
May 17th – May 24th, 2020
May 10th – May 17th, 2020
May 3rd – May 10th, 2020
April 26th – May 3rd, 2020
April 19th – April 26th, 2020
April 12th – April 19th, 2020
April 5th – April 9th, 2020
March 29th – April 5th, 2020
March 22nd – March 29th, 2020
March 15th – March 22nd, 2020
March 8th – March 15th, 2020
March 1st – March 8th, 2020
February 23rd – March 1st, 2020
February 16th – February 22nd, 2020
February 9th – February 16th, 2020
February 2nd – February 9th, 2020
January 26th – February 2nd, 2020
January 19th – January 26th, 2020
January 12th – January 19th, 2020
January 5th – January 12th, 2020
December 30th – January 5th, 2020
December 22nd – December 29th, 2019
December 15th – December 22nd, 2019
December 8th – December 15th, 2019
December 1st – December 8th, 2019

Offsite VOC Monitoring Results

October 22nd – October 29th, 2023
October 8th – October 15th, 2023
October 1st – October 8th, 2023
September 24th – October 1st, 2023
September 17th – September 24th, 2023
September 10th – September 17th, 2023
September 3rd – September 10th, 2023
August 27th – September 3rd, 2023
August 20th – August 27th, 2023
August 13th – August 20th, 2023
August 6th – August 13th, 2023
July 30th – August 6th, 2023
July 23rd – July 30th, 2023
July 16th – July 23rd, 2023
July 9th – July 16th, 2023
July 2nd – July 9th, 2023
June 25th – July 2nd, 2023
June 18th – June 25th, 2023
June 11th – June 18th, 2023
June 4th – June 11th, 2023
May 28th – June 4th, 2023
May 21st – May 28th, 2023
May 14th – May 21st, 2023
May 7th – May 14th, 2023
April 30th – May 7th, 2023
April 9th – April 16th, 2023
April 2nd – April 9th, 2023
March 26th – April 2nd, 2023
March 19th – March 26th, 2023
March 12th – March 19th, 2023
March 5th – March 12th, 2023
February 26th – March 5th, 2023
February 19th – February 26th, 2023
February 12th – February 19th, 2023
February 5th – February 12th, 2023
January 29th – February 5th, 2023
January 22nd – January 29th, 2023
January 15th – January 22nd, 2023
January 8th – January 15th, 2023
January 1st – January 8th, 2023
December 18th – December 25th, 2022
December 11th – December 18th, 2022
December 4th – December 11th, 2022
November 27th – December 4th, 2022
November 13th – November 20th, 2022
November 6th – November 13th, 2022
October 30th – November 6th, 2022
October 23rd – October 30th, 2022
October 16th – October 23rd, 2022
October 9th – October 16th, 2022
October 2nd – October 9th, 2022
September 25th – October 2nd, 2022
September 18th – September 25th, 2022
September 11th – September 18th, 2022
September 4th – September 11th, 2022
August 28th – September 4th, 2022
August 21st – August 28th, 2022
August 14th – August 21st, 2022
August 7th – August 14th, 2022
July 31st – August 7th, 2022
July 24th – July 31st, 2022
July 17th – July 24th, 2022
July 10th – July 17th, 2022
July 3rd – July 10th, 2022
June 26th – July 3rd, 2022
June 19th – June 26th, 2022
June 5th – June 12th, 2022
May 29th – June 5th, 2022
May 22nd – May 29th, 2022
May 15th – May 22nd, 2022
May 8th – May 15th, 2022
May 1st – May 8th, 2022
April 24th – May 1st, 2022
April 17th – April 24th, 2022
April 10th – April 17th, 2022
April 3rd – April 10th, 2022
March 27th – April 3rd, 2022
March 20th – March 27th, 2022
March 13th – March 20th, 2022
March 6th – March 13th, 2022
February 27th – March 6th, 2022
February 20th – February 27th, 2022
February 13th – February 20th, 2022
February 6th – February 13th, 2022
January 30th – February 6th, 2022
January 23rd – January 30th, 2022
January 16th – January 23rd, 2022
January 9th – January 16th, 2022
January 2nd – January 9th, 2022
December 19th – December 26th, 2021
December 12th – December 19th, 2021
December 5th – December 12th, 2021
November 28th – December 5th, 2021
November 14th – November 21st, 2021
November 7th – November 14th, 2021
October 31st – November 7th, 2021
October 24th – October 31st, 2021
October 17th – October 24th, 2021
October 10th – October 17th, 2021
October 3rd – October 10th, 2021
September 26th – October 3rd, 2021
September 19th – September 26th, 2021
September 12th – September 19th, 2021
September 5th – September 12th, 2021
August 29th – September 5th, 2021
August 22nd – August 29th, 2021
August 15th – August 22nd, 2021
August 8th – August 15th, 2021
August 1st – August 8th, 2021
July 25th – August 1st, 2021
July 18th – July 25th, 2021
July 11th – July 18th, 2021
July 4th – July 11th, 2021
June 27th – July 4th, 2021
June 20th – June 27th, 2021
June 13th – June 20th, 2021
June 6th – June 13th, 2021
May 30th – June 6th, 2021
May 23rd to May 30th, 2021
May 16th to May 23rd, 2021
May 9th to May 16th, 2021
May 2nd – May 9th, 2021
April 25th – May 2nd, 2021
April 18th – April 25th, 2021
April 11th – April 18th, 2021
April 4th – April 11th, 2021
March 28th – April 4th, 2021
March 21st – March 28th, 2021
March 14th – March 21st, 2021
March 7th – March 14th, 2021
February 28th – March 7th, 2021
February 21st – February 28th, 2021
February 14th – February 21st, 2021
February 7th – February 14th, 2021
January 31st – February 7th, 2021
January 24th – January 31st, 2021
January 17th – January 24th, 2021
January 10th – January 17th, 2021
January 3rd – January 10th, 2021
December 20th – December 27th, 2020
December 13th – December 20th, 2020
December 6th – December 13th, 2020
November 29th – December 6th, 2020
November 15th – November 22nd, 2020
November 8th – November 15th, 2020
November 1st – November 8th, 2020
October 25th – November 1st, 2020
October 18th – October 25th, 2020
October 11th – October 18th, 2020
October 4th – October 11th, 2020
September 27th – October 4th, 2020
September 20th – September 27th, 2020
September 13th – September 20th, 2020
September 6th – September 13th, 2020
August 30th – September 6th, 2020
August 23rd – August 30th, 2020
August 16th – August 23rd, 2020
August 9th – August 16th, 2020
August 2nd – August 9th, 2020
July 26th – August 2nd, 2020
July 19th – July 26th, 2020
July 12th – July 19th, 2020
July 5th – July 12th, 2020
June 28th – July 5th, 2020
June 21st – June 28th, 2020
June 14th – June 21st, 2020
June 7th – June 14th, 2020
May 31st – June 7th, 2020
May 26th – May 31st, 2020
May 17th – May 24th, 2020
May 10th – May 17th, 2020
May 3rd – May 10th, 2020
April 26th – May 3rd, 2020
April 19th – April 26th, 2020
April 12th – April 19th, 2020
April 5th – April 9th, 2020
March 29th – April 5th, 2020
March 22nd – March 29th, 2020
March 15th – March 22nd, 2020
March 8th – March 15th, 2020
March 1st – March 8th, 2020
February 23rd – March 1st, 2020
February 16th – February 22nd, 2020
February 9th – February 16th, 2020
February 2nd – February 9th, 2020
January 26th – February 2nd, 2020
January 19th – January 26th, 2020
January 12th – January 19th, 2020
January 5th – January 12th, 2020
December 30th – January 5th, 2020
December 22nd – December 29th, 2019
December 15th – December 22nd, 2019
December 8th – December 15th, 2019
December 1st – December 8th, 2019

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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 cleanup is directed by the California Department of Toxic Substances Control (DTSC), www.dtsc.ca.gov.

Envirostor
Envirostor is the official public archive of the California Department of Toxic Substances Control (DTSC). Air quality monitoring data and other technical documents for the Ascon Landfill Site project can be found on Envirostor. Go to Envirostor to find the Ascon Landfill Site page, click on the “Community Involvement” tab near the top of the page, then scroll down to “Updates and Information” to find DTSC field inspections and air quality data.

This website 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.

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