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A sign informing the public that McClymonds High School is closed is photographed on Thursday, Feb. 20, 2020, in Oakland, Calif. The closure is related to the chemical tricloroethylene found in groundwater under the campus. (Aric Crabb/Bay Area News Group file photo)More than 132,000 sites in the US, many of them in low-income neighborhoods, are susceptible to rising groundwater that could release toxic chemicals.
Originally published at Bloomberg