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Guidance on Systematic Planning Using the Data Quality Objectives Process, EPA QA/G-4

Guidance on Systematic Planning Using the Data Quality Objectives Process: EPA QA/G-4 (pdf) (February 2006, EPA/240/B-06/001)
Provides a standard working tool for project managers and planners to develop DQO for determining the type, quantity, and quality of data needed to reach defensible decisions or make credible estimates.