SUMMARY OF THE REMEDIATION TECHNOLOGIES DEVELOPMENT FORUM
SEDIMENTS REMEDIATION ACTION TEAM
NATURAL RECOVERY SUBGROUP CONFERENCE CALL
3:00 p.m.-4:00 p.m.
June 17, 2002
On June 17, 2002, the following members of the Remediation Technologies Development Forum's (RTDF's) Sediments Remediation Action Team, Natural Recovery Subgroup, met in a conference call:
John Davis, The Dow Chemical Company (Subgroup co-chair)
Tim Dekker, Limno-Tech, Inc.
Mike Erickson, Blasland, Bouck, and Lee, Inc.
Dick Jensen, Private Consultant
Victor Magar, Battelle Memorial Institute
Douglas McLaughlin, Blasland, Bouck, and Lee, Inc.
Clay Patmont, Anchor Environmental
Mike Swindoll, ExxonMobil Biomedical Sciences, Inc.
Brett Thomas, Chevron Texaco
John Wolfe, Limno-Tech, Inc.
Christine Hartnett of Eastern Research Group, Inc., (ERG) was also present.
The Natural Recovery Subgroup is developing an analytical framework that can be used to assess the long-term efficacy of monitored natural recovery (MNR) at contaminated sediment sites. The analytical framework will be structured around five lines of evidence (LOEs). The Subgroup plans to use the framework to evaluate sites where MNR has been an integral component of remediation management strategies. The Subgroup's ultimate goal is to generate a series of case studies.
MEETING IN COLUMBUS, OHIO
The Subgroup will meet at Battelle Memorial Institute in Columbus, Ohio, on June 25, 2002. The primary objective will be to identify sites that should be selected for case studies. If time allows, John Davis said, meeting participants will start applying the Subgroup's five LOEs to selected sites.
Conference call participants spent the majority of the call talking about sites that would be good candidates for case study. Davis reminded participants that MNR does not have to be the sole treatment strategy used in order for a site to be selected for case study. Useful information might be gleaned, he said, by studying the efficacy of MNR when it is used as part of a treatment train. For example, it would be interesting to evaluate MNR's efficacy at sites where it is being relied upon to address dredging residuals. Call participants talked briefly about the criteria they will consider when selecting sites for case studies. They identified the following as important points to consider:
Tim Dekker provided information about 12 candidate sites: Torch Lake, Waukegan Harbor, Manistique Harbor, Saginaw River/Bay, Sheboygan, Hudson River, Fox River/Green Bay, New Bedford Harbor, Buffalo River, St. Mary, White Lake, and Morrow Lake. Conference call participants expressed interest in Morrow Lake, Buffalo River, White Lake, and the Fox River/Green Bay site. Dekker said that he used Clay Patmont's matrix to organize site information. The matrix calls for information on chemicals of concern, surface chemistry record, sediment core data, sediment transport analysis, natural recovery models, biological trend measures, biological analysis record, and the regulatory status of MNR initiatives.