On January 20, 2019, the Louisiana Department of Environmental Quality (LDEQ) published proposed revisions to the Risk Evaluation/Corrective Action Program (RECAP). The revisions to the RECAP regulation amend and update the program to be consistent with the most current scientific methods and recommendations.
The RECAP regulation (LAC 33:I.1307) is the primary statutory mandate for remediation activities in Louisiana. The document establishes minimum remediation standards for present and past uncontrolled constituent releases.
Among other numerous updates, the proposed RECAP establishes Section 2.3.3 Enclosed Structure Vapor Intrusion, which establishes the requirement for the evaluation of the vapor intrusion pathway. Vapor intrusion is the migration of vapors from below the ground surface (soil or ground water) into enclosed structures by traveling through fractures and joints in the foundation at sites where there is a soil or groundwater vapor source near an enclosed structure. Additionally, changes to the RECAP Standards Tables have been proposed based on revised EPA toxicity values and default parameters.
A public hearing will be held on March 1, 2019, at 1:30 p.m. at LDEQ with comments due no later than March 8, 2019.