Ground-Water Data-Collection Protocols and Procedures fo the National Water-Quality Assessment Program: Collection and Documentation of Water-Quality Samples and Related Data

This report describes protocols and recommended procedures for the collection of water-quality samples and related data from wells for the USGS National Water-Quality Assessment Program. Protocols and recommended procedures discussed include (1) equipment setup and other preparations for data collection; (2) well purging and field measurements; (3) collecting and processing ground-water-quality samples; (4) equipment decontamination; (5) quality-control sampling; and (6) sample handling and shipping.