The purpose of the umbrella water quality monitoring project, which is conducted by Bureau of Environmental Monitoring and Data Processing of EPA, is to collect surface water quality data needed for water quality assessments. In order to ensure the data quality collected by those environmental testing laboratories are reconciled for original purpose, this “Data quality assurance project plan” is conducted to verify, by examination and evaluation of objective evidence, that applicable elements of the quality system are appropriate and have been developed, documented, and effectively implemented in accordance and in conjunction with specified requirements requested by the umbrella project.. The purpose of this QAPP is mainly to clearly delineate EPA QA policy, management structure, and procedures which will be used to implement the QA requirements necessary to document the reliability and validity of environmental data. Besides, this QAPP has evaluated the performance and applicability of several testing methods, such as dissolved chromium and mercury in seawater. In order to provide opportunity for give-and-take, several seminars and symposiums about sampling techniques, quality system and analytical techniques were hold and opened to all of the participants of umbrella project. From the beginning to December, 31 of this year, the present project has fulfilled all of the assigned works in 12 months. In this report, the inadvisable and inevitable cause of shortcomings about QA implementation are discussed and some suggestions are also made.

Water quality monitoring,Data quality assurance project plan,Method performance evaluation