Surface Water: National Park Service, 2017-2019
<DIV STYLE="text-align:Left;font-size:12pt"><P><SPAN>Additional Environmental Media Sampling: The EPA uses its Water Quality Portal as a location to store a wide variety of environmental media data. A wide range of organizations including federal, state, tribal and local governments, academic and non-governmental organizations and individuals submit data to this portal. PFAS data from Colorado was extracted from this data portal and added to the concentration map. Two different datasets are included: 1) fish tissue samples collected by the EPA in 2013 and 2014 and 2) surface water samples collected by the National Parks Service from 2017 to 2019. All surface water samples collected by the National Parks service were below the laboratory detection levels for PFOA and PFOS. The lab could measure PFOS and PFOA down to 10 parts per trillion (ppt). More information on these data can be found on the EPA’s National PFAS Datasets webpage.</SPAN></P><P><SPAN /></P></DIV>
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