2008 Fourth Quarter
Environmental Impact Report Kick-off meeting held with DTSC, PCR Services, and Ascon RPs
Contract finalized with PCR Services for the preparation of the Environmental Impact Report (EIR) and related documents
Meetings with DTSC to confer on the Initial Study, planned Notice of Preparation for the EIR, the Scope of Work for the EIR, and site activities
Submittal of Draft Initial Study for Interim Removal Measure to DTSC
Submittal of Interim Removal Measure Sampling Plan to DTSC
Submittal of Interim Removal Measure Workplan to DTSC
Review and update to Health and Safety Plan and Program to continue to ensure onsite work is conducted in a manner protective to onsite workers, the public and the environment
Submittal of Interim Groundwater Monitoring Report to DTSC

2008 Third Quarter
Submittal of Industrial Storm Water Pollution Prevention Plan annual report to the Regional Water Quality Board and DTSC
Meetings with DTSC to confer on the planned Notice of Preparation for the Environmental Impact Report (EIR), the Scope of Work for the EIR, and site activities
Same-day site inspection after Chino Hills area earthquake, finding no impact to site
Regular housekeeping maintenance, storm water control measures, and weed abatement conducted onsite

2008 Second Quarter
Submittal of Interim Groundwater Monitoring Report to DTSC
Meeting with DTSC and City of Huntington Beach key staff to provide an update on the California Environmental Quality Act process for the Environmental Impact Report (EIR)
Update provided to City of Huntington Beach South East Area Committee meeting
Review and update to Health and Safety Plan and Program to continue to ensure onsite work is conducted in a manner protective to onsite workers, the public and the environment
DTSC Cypress and Sacramento staff tour Ascon to review site status
Regular housekeeping maintenance conducted on site

2008 First Quarter
Soils RI Addendum submitted to DTSC
Groundwater sampling conducted

2007 Fourth Quarter
Additional soils investigation conducted in the mineral lease areas of Site (Soils RI Addendum)
Groundwater sampling conducted per the DTSC-approved Interim Groundwater Monitoring
Program Workplan
Revisions submitted to the City of Huntington Beach draft Five-Year Implementation Plan for Southeast Coastal Project Area

2007 Third Quarter
Draft RAP submitted to DTSC
Revised Feasibility Study approved by DTSC
Groundwater Remedial Investigation Report accepted by DTSC
Groundwater sampling conducted

2007 Second Quarter
Revised Second Feasibility Study submitted to DTSC
Revised Groundwater Remedial Investigation Report submitted to DTSC
Interim Groundwater Monitoring Program Workplan submitted to DTSC and approved by DTSC

2007 First Quarter
Soils Remedial Investigation conducted in mineral lease areas of Site
Supplemental Soils Remedial Investigation Workplan for mineral lease areas of Site submitted to DTSC
Groundwater Monitoring Report submitted to DTSC

2006 Fourth Quarter
Magnolia Street fence replaced. Site interior drainage, weed abatement and general site housekeeping work conducted
Additional Groundwater Monitoring
Groundwater Remedial Investigation Report under review by DTSC
Revised (Second) Feasibility Study under review by DTSC

March and July 2006
Emergency Action Completion Report and Addendum accepted by DTSC
Emergency Action Completion Report and Addendum submitted to DTSC
Additional groundwater data are collected in the second quarter of 2006 to assist in finalized Groundwater Remedial Investigation

January 2006
Completed Emergency Action at Ascon Landfill Site

November 2005
Second Feasibility Study (aka Revised Feasibility Study) submitted to DTSC

October 2005
Held Open House at Edison Community Center to brief the community of the Emergency Action at Ascon

July 2005 – January 2006
Emergency Action fieldwork conducted at Site

July 2005
Community meeting held at Huntington Beach City Hall
Final Emergency Action Workplan submitted to DTSC
Received DTSC and City Approval of Final Emergency Action Workplan
Received required permits for Emergency Action
Began Emergency Action Fieldwork

June 2005
Emergency Action Workplan submitted to DTSC

May 2005
Received Imminent or Substantial Endangerment Determination Letter from DTSC

April - May 2005
Prepared and submitted stability evaluation of earthen berm along Hamilton Avenue to DTSC

March 2005
Groundwater Remedial Investigation Report submitted to DTSC

February - April 2005
Collected, treated and discharged approximately 3.8 million gallons of rainwater to Orange County Sanitation District under permit due to heaviest rainfall ever received at the Ascon Landfill Site
Continued inspections of Ascon Landfill Site throughout rains.

December 2004
Fourth quarterly groundwater sampling conducted per the DTSC approved Groundwater Remedial Investigation / Feasibility Study Workplan

September 2004
Third quarterly groundwater sampling conducted per the DTSC approved Groundwater Remedial Investigation/Feasibility Study Workplan

August 2004 - November 2005
Ascon Landfill Site Responsible Parties analyzed and evaluated data obtained during the additional field testing performed from March through December 2004 in support of the Revised Feasibility Study

June 2004
Second quarterly groundwater sampling conducted per the DTSC approved Groundwater Remedial Investigation/Feasibility Study Workplan

May - July 2004
Onsite testing was conducted and field measurements collected per the Pilot Study No. 3 Workplan and Addenda

April 2004
First quarterly groundwater sampling conducted per the DTSC approved Groundwater Remedial Investigation/Feasibility Study Workplan

March 2004
Ascon Landfill Site Responsible Parties started performing additional field testing in support of the Revised Feasibility Study per the DTSC approved Workplan and Addenda
Fieldwork delayed due to oil release at Krik #80 oil production well

February 2004
Report of findings from the perimeter air monitoring submitted to the DTSC. The results showed that the Ascon Landfill Site is not significantly impacting air quality
DTSC conditionally approved the Groundwater Remedial Investigation/Feasibility Study Workplan
New groundwater wells were installed per the Groundwater Remedial Investigation/Feasibility Study Workplan

January 2004
DTSC gives Ascon Landfill Site Responsible Parties the option to perform additional testing at the site in order to obtain more data needed to complete the EIR, and to evaluate additional remedial alternatives and approaches to implementing the remedy.
Submitted the Pilot Study No. 3 Workplan to the DTSC

December 2003
Final round of perimeter air samples were collected per the DTSC approved Perimeter Air Sampling Workplan

June 2003
A tidal study was performed to determine potential groundwater influence due to the change in tides

April 2003
The RPs entered into contract with PCR Services to perform the Environmental Impact Assessment (EIA). DTSC approved Perimeter Air Sampling Report Workplan. First round of sampling was conducted in May 2003

January 2003
The RPs entered into a Consent Order with DTSC to prepare a Remedial Investigation/Feasibility Study for groundwater, complete the Remedial Action Plan (RAP) for soil/waste and a RAP for groundwater, prepare California Environmental Quality Act (CEQA) documents (e.g., Environmental Impact Report ["EIR"]) and perform remedial design and implementation of the remedial actions approved in each RAP