BEGIN:VCALENDAR VERSION:2.0 METHOD:PUBLISH PRODID:-//Missouri State University/Calendar of Events//EN CALSCALE:GREGORIAN X-WR-TIMEZONE:America/Chicago BEGIN:VTIMEZONE TZID:America/Chicago BEGIN:DAYLIGHT TZOFFSETFROM:-0600 TZOFFSETTO:-0500 DTSTART:20070311T020000 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=2SU TZNAME:CDT END:DAYLIGHT BEGIN:STANDARD TZOFFSETFROM:-0500 TZOFFSETTO:-0600 DTSTART:20071104T020000 RRULE:FREQ=YEARLY;BYMONTH=11;BYDAY=1SU TZNAME:CST END:STANDARD END:VTIMEZONE BEGIN:VEVENT UID:18fcd669-22a1-4ce7-8d57-dde6b5850470.218151@calendar.missouristate.edu CREATED:20211005T191709Z LAST-MODIFIED:20211005T191709Z LOCATION:Roy Blunt Hall 002 Lecture Hall SUMMARY:GGP Seminar: Dr. Robert W. Nairn\, "Engineering and the Nature of Change: Stream Recovery in Mining-Disturbed Watersheds through Ecological ly Engineered Passive Treatment Systems" DESCRIPTION:Robert W. Nairn\, PhD\, is the David L. Boren Distinguished Pr ofessor and Sam K. Viersen Family Presidential Professor in the School of Civil Engineering and Environmental Science at the University of Oklahom a (OU)\, director of the Center for Restoration of Ecosystems and Watersh eds (CREW)\, associate director of the Water Technologies for Emerging Re gions (WaTER) Center and adjunct professor of biology. He holds a BS from Juniata College and a PhD from Ohio State University\, both in environme ntal science.\n\n\nHis presentation will focus on the surface and ground waters in the Tar Creek (KS-OK) watershed of the Tri-State Lead-Zinc Mini ng District\, deemed to be degraded due to "irreversible man-made damages " over 35 years ago\; an administrative decision resulting in minimal eff orts to address risk from legacy pollution. Artesian flowing mine waters\ , from a 26 billion gallon mine pool\, substantial tailings pile (coverin g several thousand acres)\, leachate and runoff contribute elevated ecoto xic metals concentrations to receiving streams. Despite nearly 40 years a s a U.S. EPA Superfund Site\, Tar Creek remains listed on the state's Cle an Water Act 303(d) List of Impaired Waters and is considered a habitat-L imited Aquatic Community.\n\n\nTwo full-scale\, ecologically engineered m ine water passive treatment systems (PTS) were installed to address some of these source waters contaminated by elevated concentrations of iron\, zinc\, lead\, cadmium\, and arsenic. How each contaminating element is re moved will be addressed. The receiving stream has demonstrated substantia l improvement and ecological recovery. However\, there are still signific ant pollution sources degrading the area. Comprehensive watershed-scale r estoration planning indicates that multiple\, targeted passive treatment systems\, in conjunction with land reclamation and related activities\, w ould lead to considerable instream water quality improvement. Implementat ion of passive treatment technologies beyond the demonstration level requ ires revisiting and revising previous administrative decisions.\n\n\nNair n was previously a research biologist with the U.S. Bureau of Mines. His research and teaching focus broadly on natural infrastructure that benefi ts society and environmental quality\, with an emphasis on water quality\ , watershed biogeochemistry\, ecological engineering and ecosystem restor ation. X-ALT-DESC;FMTTYPE=text/html:<html><head><title></title></head><body><p>Ro bert W. Nairn\, PhD\, is the David L. Boren Distinguished Professor and S am K. Viersen Family Presidential Professor in the School of Civil Engine ering and Environmental Science at the University of Oklahoma (OU)\, dire ctor of the Center for Restoration of Ecosystems and Watersheds (CREW)\, associate director of the Water Technologies for Emerging Regions (WaTER) Center and adjunct professor of biology. He holds a BS from Juniata Coll ege and a PhD from Ohio State University\, both in environmental science. </p>\n<p>His presentation will focus on the surface and ground waters in the Tar Creek (KS-OK) watershed of the Tri-State Lead-Zinc Mining Distric t\, deemed to be degraded due to "irreversible man-made damages" over 35 years ago\; an administrative decision resulting in minimal efforts to ad dress risk from legacy pollution. Artesian flowing mine waters\, from a 2 6 billion gallon mine pool\, substantial tailings pile (covering several thousand acres)\, leachate and runoff contribute elevated ecotoxic metals concentrations to receiving streams. Despite nearly 40 years as a U.S. E PA Superfund Site\, Tar Creek remains listed on the state's Clean Water A ct 303(d) List of Impaired Waters and is considered a habitat-Limited Aqu atic Community.</p>\n<p>Two full-scale\, ecologically engineered mine wat er passive treatment systems (PTS) were installed to address some of thes e source waters contaminated by elevated concentrations of iron\, zinc\, lead\, cadmium\, and arsenic. How each contaminating element is removed w ill be addressed. The receiving stream has demonstrated substantial impro vement and ecological recovery. However\, there are still significant pol lution sources degrading the area. Comprehensive watershed-scale restorat ion planning indicates that multiple\, targeted passive treatment systems \, in conjunction with land reclamation and related activities\, would le ad to considerable instream water quality improvement. Implementation of passive treatment technologies beyond the demonstration level requires re visiting and revising previous administrative decisions.</p>\n<p>Nairn wa s previously a research biologist with the U.S. Bureau of Mines. His rese arch and teaching focus broadly on natural infrastructure that benefits s ociety and environmental quality\, with an emphasis on water quality\, wa tershed biogeochemistry\, ecological engineering and ecosystem restoratio n.</p></body></html> DTSTART;TZID=America/Chicago:20211105T143000 DTEND;TZID=America/Chicago:20211105T153000 SEQUENCE:0 URL:http://www.geosciences.MissouriState.edu CATEGORIES:Public,Alumni,Current Students,Faculty,Future Students END:VEVENT END:VCALENDAR