Nashville District October 2011 Update

Transcription

1 Nashville District October 2011 Update Tom Cayce Chief of Programs and Project Management October 18, 2011 US Army Corps of Engineers

2 Nashville District Value to the Nation LRN 12% of inland navigable waterways (1,175 navigable river miles) 2.5% of ton miles on inland navigable waterways

3 Nashville District Value to the Region Great Lakes and Ohio River Division Civil Works Boundaries Southern most District in the Great Lakes and Ohio River Division 56,000 square miles (parts of 7 states) Tennessee and Cumberland River basin systems Largest storage reservoir East of the Mississippi River (Lake Cumberland) Critical support and access to major TVA power production and DOE Facilities 34 Million Visitors a year on six district lakes (Destination)

4 Twin River Systems Mississippi R. Ohio R. Paducah Kentucky Kentucky Lock Tennessee Tennessee R. Barkley Cumberland R. Cheatham Nashville Cumberland River Basin Kentucky Old Hickory J.Percy Priest Center Hill Major Rehab Wolf Creek Major Rehab Cordell Hull Laurel Dale Hollow Melton Hill Martins Fork Ft. Loudoun Watts Bar Knoxville North Carolina Virginia Pickwick Chattanooga Mississippi Wilson Wheeler Nickajack Chickamauga Lock South Carolina Alabama Guntersville Tennessee River Basin Georgia Lock & Dam Dam Cumberland River System - Operate and Maintain 10 Multi-Purpose Projects (4 Locks and 6 Dams) Tennessee River System - Operate and Maintain 10 Locks (Partner with for Dams and Hydro)

5 Concern: Deteriorating Infrastructure 10 Dams preventing $750M annually in damages 2 largest reservoirs DSAC 1 (8 million acre-feet of storage) 18 Lock chambers at 14 sites 11 Locks in operation for over 50 years Average age of locks: 59 years RISK Minimal advanced maintenance on projects (ARRA Helped) Currently Fix projects as they Fail Now moving towards Fail to Fix projects Can we afford the infrastructure in our inventory?

6 Budget Comparisons - FY FY 2012 ($Millions) FY 2007 FY 2008 FY 2009 FY 2010 FY 2011 FY 2012 CORPS LRN CORPS LRN CORPS LRN CORPS LRN CORPS LRN CORPS LRN Invest Construction 1, , , , , , O&M 2, , , , , , FCCE GRF TOTAL 4, , , , , , % PB 2.7% 5.1% 5.5% 5.2% 5.9% 6.3% E&W Approp 5,340 5,592 5,402 5,445 5,055 4,631??

7 Cumberland River Profile Dam Safety Action Classification (DSAC) Level

8 Cumberland River Basin Reservoir System Barkley Wolf Creek Laurel Martins Fork Cheatham Clarksville Cordell Hull Carthage Nashville Celina Dale Hollow Run-of-River J. Percy Priest Old Hickory Center Hill Flood Damage Reduction

9 Operation Watershed 4/26/2011 5/4/2011 Rainfall & Project Operations Cumberland River Basin Elevation (ft) Operation Watershed - Wolf Creek Dam Observed Without Reductions Top of Hydropower Pool Barkley Lock & Dam Cheatham Lock & Dam Cordell Hull Lock & Dam /12 4/22 5/2 5/12 5/22 6/1 Wolf Creek Dam Old Hickory Lock & Dam Operation Watershed - Dale Hollow Dam 664 Top of Flood Control Pool Storage conserved in Barkley and Kentucky 4.65 feet Dale Hollow Dam Elevation (ft) Observed Without Reductions Dale Hollow 0.51 J. Percy Priest 0.65 Center Hill Top of Hydropower Pool 650 4/12 4/22 5/2 5/12 5/22 6/1 Wolf Creek 2.54 J. Percy Priest Dam Observed Without Reductions Operation Watershed - Center Hill Dam Operation Watershed - J. Percy Priest Dam Top of Flood Control Pool Observed Without Reductions Center Hill Dam Elevation (ft) Top of Hydropower Pool Storage at Peak Elevation Elevation (ft) /12 4/22 5/2 5/12 5/22 6/1 492 Available Peak 4/12 4/22 5/2 5/12 5/22 6/1 Pie area scaled to storage capacity

10 Wolf Creek Dam Project DSAC I Classification - Karst foundation seepage $584M Total Cost, $371M Obligated, 55% Complete Barrier Wall Completion Estimated Dec 2013 Gallery Grouting Mobilizing Critical Area 1 Drilling and Grouting; Access Road; Platform Raising Technique Area 2 Complete Non-Critical Areas Barrier Wall Installation (30% complete) Rock Foundation Beneath CA 1 Current as of Sep 2011 Technique Area 1 Complete Halcomb s Landing Complete 10

11 Wolf Creek Dam Foundation Remediation ICOS Wall Sheet Pile Wall Elev 750 New Wall Work Platform Lake Cumberland Clay Embankment Elev 525 Elev 475 Limestone Bedrock Elev 425

12 Treviicos Soletanche JV Proposal Wall Dam Protective Concrete Embankment Wall (PCEW) Foundation Soil Bedrock

13 Timeframe Major Construction Contracts (1) Grouting at Embankment and Left Rim Complete (2) Barrier Wall at Embankment Award Sep (3) Saddle Dam Foundation Work Award 2012 Grout & Cutoff Walls Center Hill Dam (3) Saddle Dam Embankment Appropriate Treatment TBD Main Embankment & Left Rim (1) Grouting- complete (2) Barrier Wall DSAC I Classification- Karst foundation seepage $295M Total Cost, $117M Obligated Barrier Wall Completion Jul 2014 Project Completion Dec Legend Grout Curtain Barrier Wall Cave Feature Sinkholes

14 Center Hill Grouting Program Slide 14

15 Center Hill Barrier Wall (Looking Upstream) Encasement Wall

16 Roller Compacted Concrete (RCC) Stability Berm Downstream of the Saddle Dam Embankment Slide 16

17 Transportation Comparison Statistics Category Barge Rail Truck Fuel Efficiency (miles/gal/ton) Fatalities (ratio per ton-mile) Injuries (ratio per ton-mile) Spills (gallons per Mton-mile) Emissions HC (ratio per ton-mile) , Source: Texas Transportation Institute, Dec 2007

18 Kentucky Lock Currently longer tows must perform double lockages (increased time and money) New lock double the size New rail and road bridges Cofferdam complete Monolith walls under construction $713.4M Project FY 11: $2.9M + $55M (ARRA) FY 12 Budget: $0M IWTF Funding Challenges

19 Overall Project July 2011 Slide 19

20 BUILDING STRONG

21 Upstream Monolith Contract Excavation and construction of 9 of 61 monoliths for new lock. Entire critical path of project for 2 years. Awarded Base contract (Jan 2010) and 5 of 10 options $48.0M out of $57M total contract 33 Month long contract (including 5 Opt s) Remaining 5 options Each option completes a monolith to full height $8.9M required to exercise all 5 Would increase contract length to 36 months or more

22 Lock Excavation - 6 Oct 2011 Slide 22

23 Kentucky Lock Funding Status Project funding - 50% Federal & 50% Inland Waterways Trust Fund (IWTF). IWTF - revenues from a special $0.20 per gallon Federal tax on marine diesel fuel. American Recovery and Reinvestment Act (ARRA) - short term relief for KY Lock & other navigation projects not require IWTF match. KY Lock - $79.6M in ARRA funds - allowed new lock construction to resume after its halt in 2006.

24 KY Lock Future Funding Existing ARRA - Maintain construction activities thru 1 st Quarter FY 13 (Upstream Lock Monoliths). To meet 2016 project completion date requires additional funds in FY 12 Status of IWTF Unlikely project receives significant additional funding until at least FY 13 - Depends on the fix to the IWTF by Congress No additional funding in FY 13 Mothball project

25 O&M Project Review Mississippi R. Ohio R. Paducah Kentucky Tennessee Barkley Cumberland R. Cheatham Nashville Cumberland River Basin Kentucky Old Hickory Wolf Creek Cordell Hull Laurel Dale Hollow Martins Fork Knoxville Virginia Tennessee R. J.Percy Priest Center Hill Melton Hill Ft. Loudoun Watts Bar North Carolina Mississippi Pickwick Wilson Wheeler Chattanooga Nickajack Chickamauga Georgia South Carolina Alabama Guntersville Tennessee River Basin Lock & Dam Dam

26 O&M Funding ($ Millions) FY 08 FY 09 FY 10 FY 11 ARRA FY 12 TN River Budget TN River Approp CU River Budget CU River Approp

27 Hydropower O&M Major Rehabs & Uprates 9 Projects in operation with 28 units Installed Capacity of 914 Megawatts 3.4 B Kilowatt-Hours produced annually $44M/year returned to the U.S. Treasury Customer-Funded Activities FY 08 & 09 - $25.0M FY11 to FY30 MOA $30M to $50M/Year (Recently approved) Typical Work Items: Rehab Powerhouse Crane Rewind Generator (Barkley award in FY11) Replace Generator Air Coolers, Thrust Bearing Replace Turbines

28 Recreation #1 Federal Provider of Outdoor Recreation 34 Million Visitors per Year (More than Disney World) 4,835 Miles of Shoreline 3,379 Campsites 254 Miles of Trails 288 Boat Launch Ramps $750 Million spent by visitors at Corps projects

29 Nashville District Homepage