Tennessee Valley Authority · NYSE:TVC
Tennessee Valley Authority — Technical Presentation (August 2011)
21 slides from Tennessee Valley Authority's technical presentation, Aug 2, 2011
Slide 1: Integrated Ecological Research -- TVA Kingston Ash Recovery Project
Integrated Ecological Research-- TVA Kingston Ash Recovery Project Kingston Fly Ash Release Environmental Symposium August 2, 2011 Neil E. Carriker, Ph.D. Tennessee Valley Authority
Slide 2: Overview of Kingston Ecological Research
Overview of Kingston Ecological Research • Questions We’re Trying to Answer • Approaches We’re Using • Who is Involved • Schedules
Slide 3: Questions To Address
Questions To Address: What Were Initial Ecological Damages? How Is the Ecosystem Responding? Are There Likely To Be Any Long-Term Effects? Are There Likely To Be Any Latent Effects? How Long Will Ecosystem Recovery Take? 3
Slide 4: First, A Brief Review
First, A Brief Review • Spill Volume: ~5.4 Million cubic yards (12/22/08) • Emergency Response/Pilot Dredging Phase • CERCLA Phase 1-- Time-Critical Action Removal – 3.5 million cu yd removed from Emory River – May 29, 2010 Emory River reopened • CERCLA Phase 2—Non Time-Critical Action Removal – 2.8
Slide 5: Initial Damages? Ecosystem Response? (Ideally)
Initial Damages? Ecosystem Response? Ideally… ◦ Lots of pre-spill data for comparison… ◦ Simple task to collect more, compare before/after 5
Slide 6: Initial Damages? Ecosystem Response? (Reality)
Initial Damages? Ecosystem Response? Reality… ◦ A little pre-spill data available, lots of data gaps Intensive sampling immediately post-spill Fish and invertebrate community surveys Fish “baseline” bioaccumulation surveys ◦ Lots of post-spill, periodic surveys over time Fish, mayflies, bi
Slide 7: Long-Term or Latent Effects?
Long-Term or Latent Effects? Residual Ash Investigations (River EE/CA) ◦ Human Health & Ecological Risk Assessments ◦ Necessary investigations described in Sampling & Analysis Plan (SAP) Supplemental Investigations ◦ Information for operations decisions ◦ Additional information relevant to risk
Slide 8: Approaches
Approaches Multiple Lines-of-Evidence ◦ Multiple Disciplines ◦ Multiple Organisms (cellular/organ/individual/population/community) ◦ Different Trophic levels Multiple Participating Institutions ◦ TVA ◦ ORNL ◦ USACE-ERDC ◦ Nine Different Universities Directly funded by TVA ORAU-Administered g
Slide 9: Engineering Evaluation/Cost Analysis (EE/CA) for the River System
Engineering Evaluation/Cost Analysis (EE/CA) for the River System • Sampling and Analysis Plan (SAP) supporting Baseline Ecological Risk Assessment • Approved by EPA; sampling initiated in May 2010 • Focus on potential sub-lethal, cumulative, long-term effects Ash deposits Submerged sediments
Slide 10: EE/CA SAP Status—August, 2011
EE/CA SAP Status—August, 2011 Field Work Completed: Weekly status updates Field work • Surface water Data verification and • Ground water validation • Ash pore water Technical memoranda • Seasonally- exposed sediment • Wildlife • Fish • Benthic invertebrates • Ash deposits • Submerged sediment
Slide 11: Weekly EE/CA Update
Weekly EE/CA Update Status Date 3/30/2011 SAP TASK TECH MEMO (Appendix D FIELDWORK STATUS DATA STATUS DATA VERFICATION/ STATUS Reference) VALIDATION PERCENTAGE 1. Ash Deposits - Tennessee River Reaches A/B complete; Clinch River Sampling and analysis continues. 18/20 lab Reaches A, B, and Reference
Slide 12: Weekly Progress Update
Weekly Progress Update cial Act ‘Tennessee Valley Authority TVA Kingston Ash Recovery Project ‘Uncompleted Actions jFouRK FUCK jFOuGK jFoucK 2 [rouRK FUCK @ [roux jROUCK jFOUCK jROUCK jFoucK 72 [ROUCK Al ssle (FE eles (s elelele aelelz [5 alse ele sfela fa «lelele blelal= fz e felele ale alela fe vl
Slide 13: EE/CA Schedule
EE/CA Schedule • Sample Collection Interim Reporting Technical memoranda May 2010 --June 2011 Ground Water Model • Lab analysis, data validation Briefing July 2010 --July 2011 Interagency Data • Technical Briefing memoranda Interagency Baseline March 2011 -- Ecological Risk September 2
Slide 14: Supplemental Investigations
Supplemental Investigations ◦ Oak Ridge Associated Universities – Administered Grants: Old Dominion (two studies) North Carolina State University Duke University/University of Kentucky/ University of Illinois University of Colorado/USGS Iowa State/Northwestern ◦ Direct contracts with: Oa
Slide 15: Supplemental Investigations
Supplemental Investigations • Results support both EE/CA and NRDA • Quality Assurance Project Plans (QAPP) per CERCLA guidance • Field Surveillances, lab audits 15
Slide 16: FY 2011 Biota Sampling
FY 2011 Biota Sampling… Heron & Goose Eggs (March-April) Spring sport fish survey (April-May) Fish bioaccumulation, Spring fish reproductive survey, Larval fish (April—May) Tree Swallows, Turtles (April—August) Periphyton & aquatic vegetation (June-July) Emory River sediment toxicity bio
Slide 17: Data Quality
Data Quality Thousands of samples, multiple matrices… • Using EQuIS software for tracking • Chains of custody—automated lab data verification—data storage & management • Laboratory specifications • Full electronic data deliverables • Raw data, as well as lab QA/QC results, field/method blank results
Slide 18: Data Quality
Data Quality “Hands-on” sample management Weekly on-site status/prioritization meetings Priorities for sampling, shipping, chemical analysis, data verification/validation Status updates Weekly laboratory teleconferences Sample analysis sequence priorities Resolution of analytical issues
Slide 19: Data Verification/Validation Status—Weekly Update
Data Verification/Validation Status— Weekly Update Bass, Bluegill, Catfish, Etc. - 2009 Shad - 2009 *Shad - Fall 2010 *Bass, Bluegill, Catfish, Etc. - Fall 2010 Bass, Bluegill, Catfish, Etc. - Spring 2010 Shad - Spring 2010 Heron, Goose, Osprey Eggs - 2009 Heron, Goose, Osprey Eggs - 2010 Amphibians
Slide 20: Summary
Summary • Broad Range of Ecological Investigations • Robust, Comprehensive: Multiple Lines of Evidence, Multiple Institutions, Multiple Trophic Levels, • Assessing Cellular Level Through Population & Community-Level Responses • Results Applicable to NRDA & Ecological Risk Assessment • Rigorous Data
Slide 21: To Date…
To Date… • >8,300 samples (not counting air or Hydrolab data) • 99.8% data acceptance • Nine Universities • Oak Ridge National Laboratory • Corps of Engineers Engineer Research & Development Center • Site-wide Quality Assurance Project Plan • 60+ Standard Operating Procedures • Laboratory and field
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