Corey McDonald - vtdigger - May 15, 2024
State officials have decided to begin removing an aeration system in Lake Carmi and may soon move forward with an alum treatment after finding the system actually exacerbated conditions creating harmful cyanobacteria in the lake ... But the system repeatedly malfunctioned, making it difficult for state officials to conduct a comprehensive assessment of the system ... The system worked by sending compressed air through a tube to a “manifold,” which shot the air into 40 different pipes spread out at the bottom of the lake ... Officials found it had “unintended consequences” of mixing phosphorus-rich bottom water with the rest of the lake, according to minutes from an April 16 meeting of the state’s Lake Carmi Coordination Team ... Lake Morey, in Fairlee, had a “very successful” alum treatment in 1986 and is in “better shape” since the treatment ...
Guy Page - Vermont Daily Chronicle - May 16, 2024
Aeration has been effective in other lakes but does not seem to be good solution for Lake Carmi. The equipment will be removed this fall. A removal plan is in process.
Amanda Martin-Ryan - NBC5 - May 16, 2024
... For the DEC, their plan B is aluminum sulfate treatments. It’s already gone through a feasibility study commissioned by the state, which estimated costs of alum treatments to be $2.6 million. It’s more money coming out of the state’s pockets, but good news, the process is already effective at another lake in the state ... If things go according to plan while following state and EPA regulations, the DEC hopes to start alum treatments by the spring of 2025.
Links: UVM Lake Carmi Platform Data, Vermont Department of Health Lake Conditions, Current Status of Vermont State Parks Recreational Water
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