EPA proposes new models for nutrient criteria in lakes

May 22, 2020
EPA has released for public comment a draft technical document to help states develop numeric nutrient criteria for lakes and reservoirs, seeking to update guidance documents from 20 years ago with better science based on actual monitoring data rather than the “reference watersheds” used for the existing guidance. “These draft national criteria recommendations are models for total nitrogen and total phosphorus concentrations in lakes and reservoirs to protect three different designated uses-- aquatic life, recreation, and drinking water source protection--from...


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