U.S. EPA Contaminated Site Cleanup Information (CLU-IN)


U.S. Environmental Protection Agency
U.S. EPA Technology Innovation and Field Services Division

Search Result

CASE STUDY: ACCELERATED SITE CLOSURE VIA MULTIMODAL LNAPL TRANSMISSIVITY TESTING AND PLUME STABILITY ANALYSIS, WEST TEXAS
Daigle, T., J.M. Hawthorne, L. Reyenga, and D. White.
2018 IPEC: 25th International Petroleum Environmental Conference, October 30 - November 1, 2018, Denver, Colorado. 20 slides, 2018

The Former Waddell Compressor Station, located southwest of Midland/Odessa, Texas, is regulated by the Texas Railroad Commission and is enrolled in the Operator Cleanup Program, which allows for risk-based site closure for remediation of LNAPL contamination in the form of natural gas condensate. The site has >20 yrs of groundwater monitoring data. LNAPL transmissivity testing was performed at five wells in 2018 using both oil/water ratio test methods and mobile dual-phase extraction (MDPE) data analysis. Transmissivity calculated for both methods in accordance with ASTM E2856-13 indicated that the LNAPL is not hydraulically recoverable, which was corroborated when <0.01 gal of fluid-phase LNAPL out of ~1,180 total gal of water was recovered during the MDPE event. A dissolved-phase plume stability analysis was also performed using the Groundwater Spatiotemporal Data Analysis Tool (https://www.api.org/oil-and-natural-gas/environment/clean-water/ground-water/gwsdat). Results suggest that the dissolved-phase plume is stable to decreasing in mass and is not expected to migrate beyond the current extent. Slides: https://cese.utulsa.edu/wp-content/uploads/2018/11/IPEC-2018-Accelerated-Site-Closure-Via-Transmissivity-Testing-and-Plume-Stability-Analysis.pptx



The Technology Innovation News Survey welcomes your comments and suggestions, as well as information about errors for correction. Please contact Michael Adam of the U.S. EPA Office of Superfund Remediation and Technology Innovation at adam.michael@epa.gov or (703) 603-9915 with any comments, suggestions, or corrections.

Mention of non-EPA documents, presentations, or papers does not constitute a U.S. EPA endorsement of their contents, only an acknowledgment that they exist and may be relevant to the Technology Innovation News Survey audience.