WASHINGTON, Sept. 14 (TNSLrpt) -- The U.S. Geological Survey issued Scientific Investigations Report 20265058, 'Continuous Monitoring and Temporal Variability of Fluorescence of Dissolved Organic Matter in Karst Groundwater of the Edwards Aquifer, South-Central Texas, 2019-24,' by Stephen P. Opsahl, MaryLynn Musgrove, Lisa L. Ashmore and Ben T. Jeffries. Prepared in cooperation with the San Antonio Water System and the City of Austin, the 29-page report finds that continuous fluorescen . . .

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