Technical documents related to the investigation are available below. You can also access these documents on DTSC’s Envirostor database at www.envirostor.dtsc.ca.gov by searching for “Fleet Aerospace (Langley Facility).” If you need help finding specific information, email us at info@MCPEnvironmentalFacts.org.

Please note: all documents are in English. Contact us if you need Spanish versions.

• Limited Off-Site Soil Vapor Investigation Work Plan - September 2025

• Revised Indoor Air Assessment and Interim Mitigation Measures Report - September 2025

• Second Sitewide Soil Vapor Sampling Report - August 2025

• Revised Indoor Air Sampling Report - 336, 342, 346 and 350 Euclid - August 2025

• Revised Indoor Air Monitoring Work Plan - Food 4 Less Building - July 2025

• Soil Vapor Extraction and Sub-Slab Depressurization Pilot Test Work Plan Response to Comments - July 2025

• DTSC Project Update - July 14, 2025

• Sitewide Soil Vapor Assessment Report - July 2025

• 2nd Quarter 2025 Food 4 Less Indoor Air Assessment Report - June 2025

• DTSC Project Update - June 16, 2025

• Indoor Air Monitoring Work Plan - Food 4 Less Building - May 2025

• Soil Vapor Extraction and Sub-Slab Depressurization Pilot Test Work Plan - May 2025

• Indoor Air Sampling Report - 336, 342, 346 and 350 Euclid - May 2025

• DTSC Project Update - April 14, 2025

• Technical Memorandum: Indoor Air Sampling Results, October 2024 - April 2025

• DTSC Project Update - April 4, 2025

• Submittal for Additional Indoor Air Sampling at Market Creek Plaza - January 2025

• DTSC Indoor Air and Project Update - January 13, 2025

• DTSC Indoor Air and Project Update - November 25, 2024

• DTSC Indoor Air and Project Update - October 28, 2024

• DTSC Indoor Air and Project Update - October 21, 2024

• DTSC Indoor Air and Project Update - September 2024

• DTSC Indoor Air and Project Update - August 2024

• DTSC Indoor Air and Project Update - July 2024

• Indoor Air Sampling Work Plan – May 2024

• DTSC Facility-Initiated Corrective Action Agreement (FICA) - February 2024

Historical Files (1986 - 2000)

• San Diego County Department of Environmental Health (SDCDEH) Land Use Change Approval Letter – August 1999

• Market Creek Plaza Land Use Change Request Letter – June 1999

• Market Creek Plaza SDCDEH Voluntary Assistance Program Application – June 1999

• Phase I Environmental Site Assessment – April 1999

• Preliminary Endangerment Assessment Report - April 1996

• DTSC Voluntary Cleanup Agreement - March 1996

• Langley Facility Additional Soil and Groundwater Investigation Workplan and Approval Acknowledgment – August 1995

• SDCDEH Application for Regulatory Oversight – May 1995

• DTSC Facility Closure Documentation – January 1994

• DTSC Acknowledgement of Facility Units Operating under Conditional Authorization and/or Conditional Exemption – August 1993

• Langley Facility Soil and Groundwater Investigation Report – October 1991

• Langley Facility Environmental Assessment Report – December 1990

• SDCDHS Clarifier Tank Removal No Further Action Letter – April 1987

• Langley Facility Tank and Contaminated Soil Removal Report – March 1987

• Soil Removal Workplan – September 1986

• Inspection of Removal of Two Underground Storage Tanks – August 1986