Stephen Cullen
Lorne Everett
3/8/96-9/30/97 $30,000
Lawrence Livermore National Laboratory, B291841
ICS Researchers Dr. Stephen J. Cullen, Dr. Lorne G. Everett, and Dr. Joel Michaelsen were contracted by the California State Water Resources Control Board to conduct additional analysis of data derived as a part of a previous study which resulted in the report entitled California Leaking Underground Fuel Tank (LUFT) Historical Case Analysis in which ICS researchers Cullen, Everett, and Michaelsen had played a key role.
A major outcome of the above-cited effort was the creation and maintenance of a significant database consisting of hydrogeologic data drawn from LUFT sites throughout the state. Previous data analyses conducted by the ICS researchers had employed a variety of statistical techniques to characterize the setting and character of LUFT sites as they occur throughout the state. Key contaminant hydrogeologic characteristics such as benzene concentration distribution, plume size, depth to groundwater, and an analysis of the effectiveness of various applied remediation techniques were evaluated. The temporal and spatial coverage of sites in a data set of this size afforded an opportunity to conduct an additional statistical analyses of the data set for the purpose of understanding the distribution and fate of petroleum hydrocarbons in the subsurface. The analysis undertaken focused on benzene as representative of a highly mobile and toxic petroleum hydrocarbon compound. This investigation evaluated the factors that characterize the occurrence, distribution, and fate of benzene at a variety of locations in California where groundwater has been impacted by a LUFT(s).
One of the major conclusions of the previous study was that with rare exceptions, a petroleum hydrocarbon release will naturally degrade in California’s subsurface environments and that passive bioremediation can be as effective as active engineered remediation approaches. In this study, Cullen, Everett, and Michaelsen drew upon that database, and the knowledge learned from the previous data analyses, to perform additional analyses in an attempt to shed light on the cause and effect relationships which underlie the findings of the previous study. Further analyses were also performed to confirm the findings of the previous work. . A technical report and peer reviewed paper is expected to be published which articulates the methodologies and findings of the study.
Stephen Cullen
Lorne Everett
10/1/96-9/30/98 $43,500
Lawrence Livermore National Laboratory, B333265
In June 1994, the State Water Resource Control Board (SWRCB) contracted with a consortium of campuses of the University of California to study the cleanup of Leaking Underground Fuel Tanks (LUFT) in California. ICS Researchers Dr. Stephen J. Cullen, Dr. Lorne G. Everett, and Dr. Joel Michaelsen played key roles on the consortium team. The study consisted of data collection and analysis from LUFT cases throughout the state and a review of other studies on LUFT cleanups. Two final reports were submitted to the SWRCB in October and November of 1995. The reports were entitled: Recommendations To Improve the Cleanup Process for California’s Leaking Underground Fuel Tanks (LUFTs) and California Leaking Underground Fuel Tank (LUFT) Historical Case Analysis .
One of the important recommendation of this study was to identify a series of LUFT demonstration sites and to form a panel of experts made up of scientific professionals from universities, private industry, and Federal and State regulatory agencies. This panel would evaluate and interpret data from LUFT demonstrations sites for the purpose of applying the recommendations derived from the previous studies mentioned above. Again, ICS researchers Dr. Stephen J. Cullen and Dr. Lorne G. Everett, because of the experience and demonstrated knowledge of the field, were invited to participate on the expert panel.
Sites selected for inclusion in the study were:
Based on the results of the findings at the nine demonstration sites, the expert panel then evaluated the results of the investigations and demonstrations across the combined sites. The findings indicated that the general recommendations and conclusions derived from the 1995 reports cited above could be successfully applied and used to develop effective remediation strategies at specific sites throughout the state of California.
Lorne Everett
03/15/95-09/30/97 $75,000
US Navy, IPA A95002
Lorne G. Everett participated as a member of the United States Navy Science Advisory Panel in support of the Navy National Test Site Program. The program focuses on developing hydrocarbon remediation technologies that will be used by the United States Navy throughout the world. Contributions from the Vadose Zone Monitoring Laboratory focused on selecting monitoring strategies to optimize the remediation activity. Remediation technologies such as heap biopile programs, hot air vapor extraction, and the German UVB recycling system were demonstrated.
Lorne Everett
9/21/97-12/30/98 $15,996
Lawrence Livermore National Laboratory, B339044
Hugo Loaiciga
2/1/97 - 8/15/97 $51,178
Bechtel Nevada, PO 13440
The goal of this project is to document current practices of environmental technologies in the areas of site characterization and in situ remediation process monitoring. In a six month work period, we (1) collected, assessed, and compiled information from technology users and purchasers in DOE environmental management programs and (2) produced a draft document for review by technology users, purchasers, and project sponsors.