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Title: Audit report on the 1995 GQA biological survey
Author: National Rivers Authority Anglian Region
Document Type: Monograph
The internal audit or Analytical Quality Control was carried out following the protocol developed for the 1995 survey. This involved the use of Cusum (Cumulative sum) charts to monitor the efficiency of sorters and thereby identify any problems early in the audit. These sheets should signal an alarm if quality deteriorates, at which point remedial action can be taken. SQC charts were also plotted as in 1994. In previous years the internal and external audits were carried out independently. In 1995 however, samples which had been internally audited became a subset of those sent to the IFE for external auditing. It was hoped that this would provide quality assurance for the AQC.
Publisher: National Rivers Authority
Publication Date: 1996
Publication Place: Peterborough
Subject Keywords: AuditingSamplingMethodologyBiological surveys
Extent: 15
Total file downloads: 277

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