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CMS owns among the oldest coal ash storage facilities in the United States. The majority of these ponds have been in operation since the 1950s, before contemporary safeguards were in place.
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In December 2008, a 1 billion gallon coal ash pond in Tennessee broke and spilled its contents over 300 acres, causing an estimated $1 billion in costs for the utility, not including litigation expenses from related damages.
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Prior to the dam breach, TVA was monitoring its storage ponds at higher rates than CMS discloses publicly and higher than CMS is currently negotiating with the Michigan Dept. of Natural Resources and the Environment.
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The TVA disaster shows that CMS’s lower standard of practice is insufficient to prevent significant financial risks.
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The EPA is considering labeling coal ash as a hazardous waste. CMS and the entire utilities sector would face significantly increased costs if coal ash is designated hazardous.
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Industry peer Duke Energy discloses risks related to coal ash in financial statements and discloses risk mitigation measures, including plans to install synthetic caps and liners at existing and new coal ash landfills and convert from wet to dry storage.
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Xcel Energy has agreed to increase disclosure on coal ash management and disposal practices and risk mitigation
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CMS does not provide shareholders with sufficient information to determine if the company is properly managing the risks of coal ash storage, management, and disposal practices.
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The Investor Network on Climate Risk – a $5 trillion network of investors - supports this resolution.
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This resolution does not bind CMS to a particular policy, it asks for improved disclosure relating to coal ash risk.
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Luan Steinhilber
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Amy Galland
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Shareholder Advocacy Director
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Research Director
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Miller/Howard Investments
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As You Sow
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