National Surface Water Survey: Western Lake Survey (Phase 1 - synoptic chemistry) quality assurance plan

The purpose of the National Surface Water Survey of the National Acid Precipitation Assessment Program is to evaluate the present water chemistry of lakes and streams, to determine the status of certain biotic resources, and to select regionally representative surface waters for a long-term monitoring program to study changes in aquatic resources. The Western Lake Survey is part of the National Surface Water Survey. The U.S. Environmental Protection Agency requires that data-collection activities be based on a program that ensures that the resulting data are of known quality and are suitable for their intended purpose. This quality assurance plan describes in detail the quality-assurance requirements and procedures that are unique to the Western Lake Survey - Phase I.