What is a Quality Assurance Project Plan (QAPP)? A QAPP is a written document that explains how organizations ensure – using quality assurance (QA) and quality control (QC) activities – that the data ...

EPA has established air sensor loan programs independently and through collaborations with libraries, tribes, museums, and others to enable the public to learn about air quality in their communities.

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Malibu Lagoon underwent a major restoration in 2012 after years of poor water circulation, excess sediment and low dissolved oxygen had affected the coastal wetland. The project completely changed ...