NAWQA U.S. Geological Survey Placer Hall / Federal Center / /
IndustryTerm
gas chro / aquifer systems / cleaned equipment / chemical constituents / gas chromatography/mass spectrometry / gas chromatography/ mass spectrometry / /
Organization
U.S. Department of the Interior U.S. Geological Survey Summary / Study Unit / U.S. Congress / Pesticide and Study Unit / Federal Center Denver / U.S. Government / U.S. Department of the Interior / National Water-Quality Assessment Study Unit National Water-Quality Assessment Program U.S. Department of the Interior U.S. Geological Survey Summary / /
Person
Jeffrey D. Martin / Robert J. Gilliom / Terry L. Schertz / Charles G. Groat / J. Gilliom / Robert M. Hirsch / /
Position
Director The use / Chief Hydrologist / Secretary U.S. Geological Survey / /
U.S. Department of the Interior U.S. Geological Survey Summary and Evaluation of Pesticides in Field Blanks Collected for the National Water-Quality Assessment Program,