TASK DESCRIPTION
This task is designed to result in the collection of full-scale operational and performance data during FY-1993 and early FY-1994 in situ vitrification (ISV) operations conducted by Geosafe Corporation at the Parsons Superfund Site in Lansing, Michigan and the Arnold Air Force Base (AFB) in Manchester, Tennessee. In addition, field data will be collected from, and field data collection techniques verified on, an Operational Acceptance Test (OAT) planned by Geosafe Corporation in early FY-1993 as a precursor to the operations at Parsons and Arnold AFB. The field data collected via this task support the resolution of technical issues that are delaying the deployment of the ISV technology for contaminated soil applications within the DOE complex. This field data collection task supports closure of vapor release from unconfined soil, fate of VOCs and attainable depth issues. Closure of these ISV technical issues directly supports the planned demonstrations and RODs at the Hanford 100 B/C Area, Oak Ridge National Laboratory (ORNL) WAG 7 and Hanford 200 BP-1.
This task represents the first dedicated effort to collect full-scale ISV process data during remedial operations. Resulting data from this talk will be reduced, interpreted and reported in a format suitable for use by regulators and end users of ISV. Geosafe Corporation, EPA Region IV, EPA Region V and Arnold AFB are supportive of this collaborative effort as this task will produce data that are of benefit to all parties concerned. The resulting data will assist DOE by resolving issues that are currently preventing the deployment of the ISV technology in the DOE complex.
TECHNOLOGY NEEDS
Contaminated soil within the DOE complex represents a significant waste stream that must be remediated. In general, the remediation of these contaminated soils in place, or in situ, is a preferred alternative in terms of economics and safety to the environment, workers and public. However, for soil contaminated with heavy metals, radionuclides and/or mixed waste, there exist a limited number of in situ technologies. Resolution of ISV technical issues for application to contaminated soil will increase the in situ remediation options available to DOE. This task supports the closure of these technical issues by obtaining the field data necessary for an increased understanding of the ISV process that will expand the applicability of the ISV technology to meet DOE remediation needs.
ACCOMPLISHMENTS
The test plan that will guide field data collection activities during Geosafe operations was finalized during the first quarter of FY-1993. Included in the test plan is a description of instrumentation that will be used, placement of instrumentation, description of the data acquisition system, and frequency at which data will be collected.
A key component of the field data collection task is the data acquisition system. Configuration of the data acquisition system was completed on schedule at the end of January 1993. The Field Data Collection Data Acquisition System FDC.DAS V1.0 is the data acquisition system for the collection of field data during full-scale Geosafe operations. The system has been designed with built-in flexibility and can be used for all of Geosafe's operation with very little modification for each operation. The current version of the data acquisition system is capable of acquiring, logging and displaying over 150 instrument signals and can be expanded to accommodate additional signals.
Future efforts will focus on the placement of instrumentation, collection of field data, reduction of field data and reporting of results from field data collection activities from each of Geosafe's full-scale operations. The current schedule for full-scale field data collection operations is April 1993 for the Geosafe OAT, August 1993 for Parsons and October 1993 for Arnold AFB.
COLLABORATION/TECHNOLOGY TRANSFER
The identification of data needs, and the collection of field data to meet these needs, constitute the technology transfer activity for this task. Workshops held between members of the DOE ISV community and Geosafe Corporation identified the field data needed to resolve technical issues and identified instrumentation to collect this field data. Input from the workshops provided the basis for the field data collection test plan. Technology transfer activities for the field data collection phase of this task continues through the collaboration between this task, Geosafe Corporation and EPA. The final phase of this task will ensure that data information gathered is available through the dissemination of reports and presentations.
FY 93 Contacts:
Ja-Kael Luey
Pacific Northwest Laboratories
P. O. Box 999, MS P7-34
Richland, WA 99352
509-376-5740
Steven C. Slate
Technical Program Manager
Pacific Northwest Laboratories
509-375-3903