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Water quality. Sampling - Guidance on sampling of bottom sediments from rivers, lakes and estuarine areas Ingestion-build-276583 BS 1552 specifies the requirements1 Scope This document provides guidance on the sampling of unconsolidated sediments for the determination of their geological, physical and chemical properties, as well as the determination of biological, microbiological and chemical properties at the water and sediment interface. Guidance on achieving sediment cores is given specifically for the measurement of rates of deposition and detailed strata delineation. The main emphasis of this document is