Quality assurance practices for the chemical and biological analyses of water and fluvial sediments

HYDROLOGIC LANDSCAPES ON THE DELMARVA PENINSULA PART 2: ESTIMATES OF BASE‐FLOW NITROGEN LOAD TO CHESAPEAKE BAY1

“…More complete information on analytical techniques used for inorganic constituents can be found in Fishman and Friedman (1985). Quality control and quality assurance methods used by NWQL are described in Friedman and Erdmann (1982). In additicn, replicate samples were collected in the field and shipped to NQWL to be analyzed as regular samples.…”

Quantification of trace element loading in the upper Tenmile Creek drainage basin near Rimini, Montana, September 2011

“…Qualityassurance procedures used for the collection and field processing of water samples were as described by Ward and Harr (1990), Horowitz and others (1994), Edwards and Glysson (1999), Lambing (2006), and the U.S. Geological Survey (variously dated). Standard procedures used by the NWQL for internal sample handling and quality assurance were as described by Friedman and Erdmann (1982), Jones (1987), and Pritt and Raese (1995).…”

Chapter A7. Section 7.5. Cyanobacteria in lakes and reservoirs: Toxin And taste-and-odor sampling guidelines

“…4 Study objectives will dictate what variables need to be measured; the ancillary data to be collected (7.5.5.F), and when, where, and how samples will be collected. 4 A comprehensive treatment of the fundamentals of how to design water-quality studies is beyond the scope of NFM 7.5 but can be found in reports such as Friedman and Erdmann, 1982;Shampine and others, 1992;and Averett and Schroder, 1994. The information provided in NFM 7.5 is intended to be used in conjunction with these and other reports that specifically address the design of surfacewater-quality studies.…”

“…The types, number, and distribution of quality-control samples to be collected are specified in the quality-assurance plan for the study and depend on study design and objectives. General information on different types of quality-control samples are discussed elsewhere (Friedman and Erdmann, 1982;U.S. Environmental Protection Agency, 2008;NFM 4.3).…”