Nitrogen Isotope Analyses-- Changes in Laboratory Capabilities and Field Procedures In Reply Refer To: July 1, 2003 Mail Stop 412 Office of Water Quality Technical Memorandum 2003.07 Subject: Nitrogen Isotope Analyses-- Changes in Laboratory Capabilities and Field Procedures See qw03.07.pdf Timothy L. Miller /s/ Chief, Office of Water Quality This memorandum does not supersede any other Office of Water Quality Technical Memorandum. Distribution: All WRD Employees ********************************* Timothy L. Miller Chief, Office of Water Quality U.S. Geological Survey 412 National Center Reston, VA 20192 703/648-6868 tlmiller@usgs.gov