Tennessee Valley Authority · NYSE:TVC
Tennessee Valley Authority — Corporate Update (July 2009)
44 slides from Tennessee Valley Authority's corporate update, July 2009
Slide 1: Update on Kingston Ash Spill
Update on Kingston Ash Spill Anda Ray Senior Vice President Office of Environment & Research JULY 2009 1
Slide 2: History of Kingston Fossil Plant
History of Kingston Fossil Plant • TVA part of Kingston community since early 1950s – Construction of plant began in 1951 – First unit began operation in 1955 • At time of completion, world’s largest coal-burning plant • About 300 people work there • Has nine generating units with a capacity of 1600
Slide 3: History of Failed Dredge Cell
History of Failed Dredge Cell 3
Slide 4: Failure of Dredge Cell
Failure of Dredge Cell Dike Failed on December 22, 2008, between midnight & 1 a.m. 4
Slide 5: AECOM June 2009 Root Cause Report
AECOM June 2009 Root Cause Report 5
Slide 6: What Happened – Initial Failure
What Happened – Initial Failure Initial effects – 5.4 million cubic yards of coal ash released – Debris covers about 300 acres (about half a square mile) – No injuries – 3 homes uninhabitable, 23 others damaged – Roads, rail line and utilities damaged 6
Slide 7: Aerial View of Site – Post Event
Aerial View of Site – Post Event Dike Failed 7
Slide 8: Initial Emergency Response
Initial Emergency Response • Worked closely with: – Roane County Emergency Management Agency – Tennessee Department of Environment & Conservation (TDEC) – Tennessee Emergency Management Agency (TEMA) – U.S. Environmental Protection Agency (EPA) – U.S. Army Corps of Engineers – U.S. Department of Hom
Slide 9: Initial Outreach Response
Initial Outreach Response • Ensure neighbors are safe • Arrange temporary housing + incidentals • Respond to property damage • Dispatch face-to-face outreach teams • Conduct community meetings • Establish comprehensive Web site to share information • Established an Outreach Center and public phone l
Slide 10: Kingston Recovery Objectives
Kingston Recovery Objectives Kingston Recovery Project Objectives • Ensure the Safety of Citizens and Response Personnel • Keep the Public and Stakeholders Informed of Response Activities • Maximize the Protection of Environmentally Sensitive Areas • Return Community to Normal Conditions 10
Slide 11: Early Environmental Monitoring
Early Environmental Monitoring • Began ongoing sampling of air, water & soil • Stabilized site to prevent further movement of ash – Deployed booms to confine floating debris and cenospheres – Began building dikes to confine ash in the water – Began dust control measures with spray-on dust inhibitors
Slide 12: Scope of Cleanup: Failed Ash Cell
Scope of Cleanup Failed Ash Cell 12
Slide 13: Scope of Cleanup: Failed Cell and Former Dike Area
Scope of Cleanup Failed Cell and Former Dike Area 13
Slide 14: Scope of Cleanup: Aerial of Spill Before
Scope of Cleanup Aerial of Spill -BEFORE 14
Slide 15: CERCLA
CERCLA • TVA and EPA have decided to conduct remediation of the KIF Ash Release under the regulatory structure of CERCLA, the Comprehensive Environmental Response, Compensation & Liability Act • CERCLA provides TVA, regulators, and the public with a clear path forward to clean up the site. Advantage
Slide 16: Scope of Cleanup: Amphibious trackhoes
Scope of Cleanup Amphibious trackhoes 16
Slide 17: Cenospheres Cleanup
Cenospheres Cleanup Collecting cenospheres … … and storing them 17
Slide 18: Ash Processing
Ash Processing River Dredge Settling Pond Rail Loading Dipping Ash Sluice Channel Temp Processing Area Discharge into Rim Ditch 18
Slide 19: River Dredging
River Dredging 19
Slide 20: Pumping Into Rim Ditch
Pumping Into Rim Ditch Dredge Material Pumped Into Rim Ditch 20
Slide 21: Dipping Ash From Rim Ditch
Dipping Ash From Rim Ditch Dredge Material Dipped by Back Hoes from Rim Ditch to Processing Area 21
Slide 22: Loading Rail Cars
Loading Rail Cars Dried Ash Loaded Into Rail Cars 22
Slide 23: Ash Disposal: Rail Car Burrito Liner
Ash Disposal Rail Car Burrito Liner 23
Slide 24: Ash Disposal
Ash Disposal Disposal of Released Ash: • Current Transportation: Rail • Other: Barge, Truck • Alabama site Long Term Options: • Dry Fly Ash Collection • By Product Marketing • Reclamation Sites • Existing Class I or II Landfills • Greenfield Disposal Sites • Brownfield Sites - Structural Fill Class
Slide 25: Soil & Ash Sampling
Soil & Ash Sampling • Except for arsenic, concentrations of metals in escaped ash are well below EPA Region 4 Removal Action Levels – In most cases, not much different from non-agricultural soils • Ash and soil tested for radioactivity – Kingston ash less radioactive than low- sodium table salt 25
Slide 26: Water & Air Sampling Results
Water & Air Sampling Results • Well over 2,000 tests by TVA, TDEC & EPA continue to confirm – Municipal drinking water & water sampled from private wells continue to meet standards for drinking water • More than 64,000 of air- quality results show the air is better than National Ambient Air Quality
Slide 27: Biological Monitoring
Biological Monitoring • Fish (whole body and tissue) • Benthic invertebrates (bottom of food chain) • Birds and eggs (food chain effects) • Insects (food source) • Aquatic Life Toxicity 27
Slide 28: Operational Results
Operational Results • 357,499 yds3 of ash removed from the river to date • 360+ acres of Flexterra applied • 6,145,500 gallons of Cenosphere slurry collected • 67,963 bags of shoreline debris collected • 959 tons of light debris collected w/ barge-mounted excavators • 64,000+ air samples • 1,800+ ri
Slide 29: Continued Outreach
Continued Outreach • Public Meetings • Outreach Center • Long-term Recovery Committee • Property Purchases • Business Claims • Community Involvement Plan • ORAU Health Contract • Research RFPs Peer Reviewed • Community Action Group 29
Slide 30: Progress…
Progress… Failed Dredge Cell from Swan Pond Road 30
Slide 31: Before…
Before… Tracks adjacent to Swan Pond Road - BEFORE 31
Slide 32: Before…
Before… Tracks and Swan Pond Road - BEFORE 32
Slide 33: Progress…
Progress… Tracks and Swan Pond Road - AFTER 33
Slide 34: Before…
Before… Connector Swan Pond Road and Circle - BEFORE 34
Slide 35: Progress…
Progress… Connector Swan Pond Road and Circle - AFTER 35
Slide 36: Before…
Before… Church Slough -BEFORE 36
Slide 37: Progress…HOPE!
Progress…HOPE! Church Slough -TODAY 37
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Slide 44: Questions?
Questions? 44
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