CX-008636: Categorical Exclusion Determination

Analysis of Organic Species by Gas Chromatography (GC) and Gas Chromatography/Mass Spectrometry (GC/MS) CX(s) Applied: B3.6 Date: 05/29/2012 Location(s): South Carolina Offices(s): Savannah River Operations Office

Office of NEPA Policy and Compliance

May 29, 2012
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Analysis of Organic Species by Gas Chromatography (GC) and Gas Chromatography/Mass Spectrometry (GC/MS)
CX(s) Applied: B3.6
Date: 05/29/2012
Location(s): South Carolina
Offices(s): Savannah River Operations Office

This activity has been carried for nineteen years, and the activity will not change significantly from how it was done in the past. Instruments designated as Gas Chromatograph / Mass Spectrometers (GC/MS) are used in the Analytical Development Section (ADS) for the analysis of organic materials in solids, liquids, or gases. The instruments use helium carrier gas and thermal adsorption/desorption to separate analytes, and mass spectrometers to detect the analytes, once separated. Sample preparation uses methylene chloride for extraction of organic analytes from solid and liquid samples, and the solvent is evaporated to concentrate analytes prior to analysis in accordance with the Environmental Protection Agency regulatory protocol. Other solvents used in sample preparations include methanol, hexanes, and acetone.