Tri-Service Site Characterization and Analysis Penetrometer System (SCAPS) Membrane Interface Probe
Abstract
Several demonstrations of the ion trap mass spectrometer-Membrane Interface Probe (ITMS-MIP) system for volatile organic compounds (VOCs) were completed between August of 1998 and May of 2000. The purpose of each demonstration was to show the ability of the ITMS-MIP vapor sampling system to characterize the extent of subsurface contamination during a single field deployment. Previous Site Characterization and Analysis Penetrometer System (SCAPS) ITMS-MIP field investigations include a demonstration at Alameda Naval Air Station (NAS), Alameda, CA, completed in August 1998; Long Horn Army Ammunition Plant, Karnack, TX, in September 1998; and Lake City Army Ammunition Plant, Independence, MO, in March 1999. Validation demonstrations for the SCAPS ITMS-MIP system took place at the NAS North Island, Coronado, CA, in July 1999 and April-May 2000 and at the Department of Energy Savannah River Site, Aiken, SC, August-September 1999. Results of the demonstration at the Savannah River Site are discussed briefly; however, the major emphasis of this report is the demonstration at NAS North Island in April-May 2000, which was specifically carried out as a production deployment. The ITMS-MIP system uses the commercially available MIP to collect vapor samples from the subsurface. The MIP collects VOC samples from the subsurface through a permeable membrane into a helium carrier gas that transports the sample above the ground surface for analysis. The analysis is performed in real-time by a direct sampling ITMS in accordance with U.S. Environmental Protection Agency (USEPA) draft Method 8265 (USEPA 1994). Approximately 4 minutes elapse from the time the MIP reaches the sample depth of interest until the analysis results are available. The production deployment at NAS North Island in April-May 2000 yielded 493 depth-discrete samples collected and analyzed from 28 different investigation locations.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 2002
- Accession Number
- ADA607167
Entities
People
- George Robitaille
- Jed Costanza
- Karen F. Myers
- Marc Wise
- William T Davis
Organizations
- Engineer Research and Development Center