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Polluted Runoff: Nonpoint Source (NPS) Pollution

Guidance: Monitoring and Evaluating Nonpoint Source Watershed Projects

This guide is written primarily for those who develop and implement monitoring plans for watershed management projects, but it can also be used by those who wish to evaluate the technical merits of monitoring proposals they might sponsor. It is an update to the 1997 Monitoring Guidance for Determining the Effectiveness of Nonpoint Source Controls (EPA 841-B-96-004) and includes many references to that document.

Monitoring Guide and Supplemental Material

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