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USGS scientists deploy SPMD and POCIS samplers to collect waterborne contaminants in Manoa Stream on Oahu, Hawaii.


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National Field Manual for the Collection of Water-Quality Data (TWRI Book 9)

Chapter A8. Bottom-Material Samples (Version 1.1, 6/2005) [431 KB PDF]

This report is in pdf format. Download a copy of Adobe Acrobat Reader for free.


Chapter A8 provides guidelines for the equipment and procedures needed to collect and process samples of bottom material for the evaluation of surface-water quality.

Table of Contents


Purpose and scope

Field manual review and revision


8.1 - Field trip preparations

8.2 - Site selection

8.2.1 - Location of sampling sites

8.2.2 - Number of sampling sites

8.3 - Sampling equipment

8.3.1 - Equipment selection

8.3.1.A - Samplers

8.3.1.B - Sieves

8.3.2 - Decontamination

8.4 - Sample collection

8.4.1 - Sampling procedures

8.4.2 - Quality-control procedures and requirements

8.4.2.A - Split samples

8.4.2.B - Concurrent replicate samples

8.5 - Sample processing

8.5.1 - Compositing and subsampling

8.5.2 - Sieving and sample handling

8.6 - Sample packaging and shipping

8.6.1 - Sample identification and packaging

8.6.2 - Shipping containers and sample shipment


8.6.3 - Analytical services request form

8.7 - Checklist of field equipment and supplies

Conversion factors and abbreviations

Selected references and technical memorandums

 [Back] Return to Field Manual Table of Contents

Archive of Chapter A8

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