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Mount Vernon outlines plan to clear decades of lime sludge from water-treatment sites
Summary
City staff told council the water treatment plant produces about 2,000 tons of lime byproduct annually and reported more than 42,000 tons removed since 2022; a management plan aims to clear the temporary Old Delaware Road site by fall 2026 and reach zero net accumulation by 2028.
City staff on Jan. 26 presented a drinking water treatment material report that lays out how Mount Vernon will finish removing a long-accumulated lime byproduct and prevent future backlogs. The water treatment plant produces about 2,000 tons of dewatered lime sludge a year; staff estimated a historical accumulation at the temporary storage on Old Delaware Road of more than 60,000 cubic yards (roughly 72,000 tons).
"When handled properly the lime byproduct is classified as a non hazardous waste in its dry form," said Mister Ruckman, the presentation lead, noting the material maintains an alkaline pH between 10 and 12 and can irritate skin or lungs if not managed. He said staff use protective equipment, dust suppression and…
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