The Quality Assurance Project Plan (QAPP) integrates all technical and quality aspects of a project, including planning, implementation, and assessment. The purpose of the QAPP is to document planning results for environmental data operations and to provide a project-specific “blueprint” for obtaining the type and quality of environmental data needed for a specific decision or use. The QAPP document describes how QAQC procedures are applied to an environmental data operation to assure that the results obtained are of the type and quality needed and expected.
For additional information refer to The Requirements for QAPPs. This 40-page manual describes QAPP preparation for activities conducted and/or funded by EPA usually through State's 319 Programs. Other resources include EPA's QAPP guidance for volunteer monitors, Chesapeake Monitoring Cooperative and WIB's QAPP guidance for §319 projects.