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<br /> <br /> <br />7.4 Explore: Use of Fountains/Aerator to improve lake water quality. Gary invites <br />comments and information on the installation of these devices to improve Karth <br />Lake water quality. They will cool and oxygenate the water and burn off some <br />nutrients. Does Sue or Shawn have any information on their benefits, or installation and <br />maintenance costs? Is a permit required? Do we need approvals from all/some of the <br />residents on the lake? <br /> <br />Kyle and Shawn said the benefits are minimal compared to the cost. Maintenance is <br />difficult and costly. <br /> <br />7.5 Information: Gary reported that seven Metro area cities filed separate lawsuits last <br />month in U.S. District Court against a group of seven companies that refine coal-tar <br />sealants. They're asking for help to pay for cleaning up and removing contaminated <br />material from their storm water ponds. <br /> <br />Gary said this information may apply to us if and when we remove silt from Karth Lake <br />and find contaminates in the process. <br /> <br />Related link: <br /> <br />https://www.mprnews.org/story/2019/01/08/driveway-sealants-polluted-minnesota- <br />ponds-who-should-pay <br />7.6. When will pump be turned on? Sue will let us know. <br /> <br />Respectfully submitted, <br /> <br />Gary Gerding, <br />Secretary <br /> <br />