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Methods and Quality Assurance for Chesapeake Bay Water Quality Monitoring Programs

The purpose of this document is to provide field and laboratory methods and associated quality control requirements for use in Chesapeake Bay water quality monitoring programs, which will result in the generation of known and comparable data quality. State agency staff or subcontractors will conduct field measurements and collect and analyze water and sediment samples for specific physical, chemical and biological parameters according to the procedures in this document.

Conformance with these procedures provides a solid foundation for a wide variety of scientific and management investigations, e.g., attainment of water quality standards, characterization of the health of the Chesapeake Bay and its tributaries, evaluation of long-term trends, effectiveness of management actions, ecosystem processes and water quality model development and calibration.

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Data Analysis Issues Tracking System (DAITS)

As the Chesapeake Bay Program Mainstem Monitoring Program reached its fifth
anniversary, EPA initiated a systematic review of the program design and implementation.
In the process of this review, numerous questions were raised which required investigation.
To insure that all of these issues received appropriate attention and to provide thorough
documentation of this process for future users of this important database, a tracking system
was designed which is known as the Data Analysis Issues Tracking System (DAITS).

DAITS is a central collection point for the registry of all issues which are raised by
those involved in the management, operation and review of the Chesapeake Bay Program
(CBP) monitoring programs. The DAITS will encompass issues relating to any programs
contributing data to the CBP data base.

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Split Sample Water Quality Results from Laboratories Participating in the Chesapeake Bay Program: 19

The Monitoring Subcommittee of the Chesapeake Bay Program decided to implement a Chesapeake Bay Coordinated Split Sample Program, using field split samples, that was to begin in May or June 1989. As part of the planning for that program, an analysis of the data from the past Chesapeake Bay split sample programs was undertaken. This report gives the results of the analysis.

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