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Title: An audit of performance in the analysis of biological samples in 1999. Environment Agency : AQC audit
Author: R.J.M. Gunn
Author: J.H. Blackburn
Author: J. Davy-Bowker
Author: R. Wiggers
Author: J.M. Winder
Author: I.T. Harris
Author: N. Kneebone
Author: J.F. Wright
Document Type: Monograph
This report focuses on the biological monitoring of rivers that was undertaken in 1999. In 1999 the sampling of aquatic macro-invertebrates for the biological assessment of river quality was carried out throughout the United Kingdom. This study used standard collection procedures as used in the 1995 General Quality Assessment (GQA) Survey. The sampling strategy was therefore compatible with RIVPACS (River InVertebrate Prediction And Classification System), a computer model developed by the Institute of Freshwater Ecology (IFE), a component institute of the Centre for Ecology and Hydrology (CEH). Samples were sorted for the families of macro-invertebrates included in the Biological Monitoring Working Party (BMWP) system. This report presents the results of the audit of 414 samples that were internally AQCd by Agency staff. The results of the Primary Audit, detailing the quality of the primary analysis of 501 samples, are reported separately.
Publisher: Environment Agency
Publication Date: 2000
Publication Place: Bristol
Subject Keywords: RiversWater qualityWater quality surveysBiological analysisMacroinvertebratesQuality assuranceAuditing
Geographic Keywords: United Kingdom
Extent: 73
Total file downloads: 295

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