L. J Schroder

• Contamination studies and testing protocol for polyethylene bottles
• Guidelines for preparing a quality assurance plan for district offices of the U.S. Geological Survey
• Precision and bias of selected analytes reported by the National Atmospheric Deposition Program and National Trends Network
• Precision of the measurement of pH and specific conductance at National Atmospheric Deposition Program monitoring sites, October 1981 - November 1983
• Preparation of polyethylene sacks for collection of precipitation samples for chemical analysis
• Results of intercomparison studies for the measurement of pH and specific conductance at National Atmosepheric Deposition Program/National Trends Network monitoring sites, October 1981-October 1985