Tennessee Valley Authority · NYSE:TVC
Tennessee Valley Authority — Technical Presentation (2010)
26 slides from Tennessee Valley Authority's technical presentation, 2010
Slide 1: Bioaccumulation, Maternal Transfer, and Effects of the TVA Kingston Ash Spill
Bioaccumulation, Maternal Transfer, and Effects of the TVA Kingston Ash Spill William A. A Hopkins Virginia Polytechnic Institute & State University
Slide 2: The people who did all of the work…
The people who did all of the work… Hill Henry, TVA Marcy Souza, Univ. Tennessee Suzy Young, ARCADIS Jesse Morris, RSI Liz Burton, RSI Ken Weisz, TVA
Slide 3: Kingston, TN Ash Spill
Kingston, TN Ash Spill Image taken June 2007 Image taken August 14, 2009
Slide 4: TVA's Response to Wildlife
TVA’s Response to Wildlife Osprey p y nest
Slide 5: Ash Settling Basins, SC, USA
Ash Settling Basins, SC, USA
Slide 6: Conceptual Exposure Model
Conceptual Exposure Model MID-COLUMM <= d sinpace WATER —~— { Betagic Fish i Benthic Fiss Benthic : ee:
Slide 7: Study Objectives
Study Objectives • Determine whether trace elements are bioavailable to wildlife occupying different trophic levels/feeding ecologies • Determine D t i whether h th wildlife ildlif are maternally t ll transferring t f i trace elements to young • Determine whether bioaccumulation and maternal transfe
Slide 8: Bioaccumulation/ Maternal Transfer of Se
Bioaccumulation/ Maternal Transfer of Se wwwrcamnl.wr.usgs.gov/Selenium/Mining.htm From: Skorupa & Ohlendorf, 1991. Contaminants in drainage water and avian risk thresholds. Pp 345-386 In: The economics and management of water and drainage in agriculture (Dinar & Ziberman, eds).
Slide 9: Amphibians
Reference Site: Timberlake Kingston Fossil Plant Amphibians Sites = 5 n = 76 (2009) n = 121 (2010)
Slide 10: Amphibians (Whole Body)
Amphibians (Whole Body) 3.5 ole Body ass) 3.0 enium Concentration in Who Amphibians ((mg/kg dry ma 2.5 2.0 1.5 1.0 Sele Photo credit: Dr. J.D. Wilson 0.5 Referen Referen Referen Impactted Impactted Impactted nce nce nce American Toad Spring Peeper Upland Chorus Frog Note: Includes 2009 and 2010 data
Slide 11: Canada Geese
Kingston Fossil Plant Canada Geese Sites = 6 n = 5 (2009) n = 25 (2010)
Slide 12: Canada Goose Eggs
Canada Goose Eggs 6 5 nium Concentrration in Eggs s (mg/kg dry mass) 4 3 Selen 2 1 0 Reference Impacted Note: Includes l d 2009 and d 2010 data. d Wilcoxon‐Mann Whitney, Site (p<0.001)
Slide 13: Great Blue Heron and Osprey
Great Blue Heron and Osprey M. Francis
Slide 14: Osprey and Heron
Kingston Fossil Plant Osprey p y Sites = 10 n = 9 (2009) n = 10 (2010) Heron Sites = 3 n = 10 (2009) n = 13 (2010)
Slide 15: Great Blue Heron & Osprey Eggs
Great Blue Heron & Osprey Eggs 6 Eggs 5 centration in E (mg/kg dry mass) 4 3 Selenium Conc 2 1 0 Reference Impacted Reference Impacted Great Blue Heron Osprey Note: Includes 2009 and 2010 data. Heron: t‐test, (p=0.031) Osprey: t‐test, (p=0.928)
Slide 16: Tree Swallows
Reference Site 2: Loudoun Dam Historically Impacted Site: Melton Hill Dam Reference Site 3: Tellico Dam Kingston Fossil Plant Tree Swallows Total Boxes = 530 Eggs Collected: n = 63 (2009) n = 155 (2010) Nestlings Collected: n = 47 (2009) n = 65 (2010)
Slide 17: Tree Swallow Eggs
Tree Swallow Eggs 14 12 enium Concenttration in Eggs 10 y mass) 8 (mg/kg dry 6 4 Sele 2 0 Fort Loudon Tellico Upstream Downstream Ash Spill Melton Hill Dam Dam TN River Clinch/TN Rivers Area Dam Reference Impacted Historically Impacted Note: Includes 2010 data, calculated dry weight using 80% moistu
Slide 18: Insert red eared slider
Insert red eared slider Herpnet Turtlesite.info
Slide 19: Turtles
Kingston Fossil Plant Turtles Trap locations = 347 Total turtles captured n = 587 (2009) n = 3,806 (2010)
Slide 20: Turtle Blood
Turtle Blood ation in Turtle Blood et weight) (mg/kg we um Concentra Seleniu Upstream Downstream Clinch Emory TN River TN River River River Note: Includes 2010 data. 2‐way ANOVA, Species (p<0.001); Location (p=0.001); Interaction (p=0.019)
Slide 21: Conclusions
Conclusions • Certain trace elements (i.e., Se) are elevated in tissues of most wildlife species evaluated. • Wildlife that have a significant proportion of their diet directly associated i t d with ith ash h appear to t be b att greatest t t risk i k off exposure. • Full scale physiological/reprodu
Slide 22: Path Forward: Continued Monitoring
Path Forward: Continued Monitoring ctbirding.org
Slide 23: Path Forward: Effects in Swallows
Path Forward: Effects in Swallows
Slide 24: Path Forward: Effects in Turtles
Path Forward: Effects in Turtles Eggs
Slide 25: Acknowledgements
Acknowledgements Adam Johnson Travis Walls Chris Freshour Harriman Utility Board Mirtha Martin Kingston City Parks and Recreation Neil Carriker Wes James Mr. and Mrs. Curtis Humphreys p y Katie Gassaway Mr. and Mrs. McMurray Alex Buckner Lori Whitehorse Transmission Crew Phil Goodrum Gina Houck Tim
Slide 26: Questions?
QUESTIONS?
Tennessee Valley Authority — Technical Presentation (2010) on 6ix