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Roseville Public Works, Environment and <br />Transportation Commission <br />Agenda Item <br />Date: May 22, 2018 <br />Item No: 5 <br />Item Description: Bennett Lake Total Maximum Daily Load (TMDL) Public Meeting <br />Background: <br />The Ramsey -Washington Metro Watershed District (RWMWD) completed a Total Maximum <br />Daily Load (TMDL) Study of Bennett Lake (including Frog Pond). A TMDL is a regulatory <br />term in the U.S. Clean Water Act, describing a plan for restoring impaired waters that identifies <br />the maximum amount of a pollutant that a body of water can receive while still meeting water <br />quality standards. In this case, the pollutant in question is Phosphorus. <br />Bennett Lake has a drainage area of 721 acres, which is comprised mostly of single unit <br />residential land use, but also has institutional, commercial, and multi -unit land uses scattered <br />throughout the watershed. Bennett is classified as a shallow lake due to a maximum depth of <br />less than 15 feet. <br />Bennett Lake has been on the Minnesota Pollution Control Agency's Impaired Waters List <br />(303d) for Nutrient/eutrophication biological indicators since 2006. The TMDL Study has <br />quantified the amount of Phosphorus that needs to be removed from the stormwater so the lake <br />functions and processes nutrients naturally. <br />This will be the Public Meeting to discuss the findings of the TMDL. General lake data and the <br />watershed districts Water Management Plan for Bennett Lake can be found by visiting <br />www.rwmwd.orand searching for `Bennett Lake". <br />Recommended Action: <br />Receive presentation and ask questions/provide comments. <br />Attachments: <br />A. Presentation <br />