Nashville District October 2011 Update Tom Cayce Chief of Programs and Project Management October 18, 2011 US Army Corps of Engineers
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
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)
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)
Concern: Deteriorating Infrastructure 10 Dams preventing $750M annually in damages 2 largest reservoirs DSAC 1 (8 million acre-feet of storage) 18 Lock chambers at 14 sites 11 Locks in operation for over 50 years Average age of locks: 59 years RISK Minimal advanced maintenance on projects (ARRA Helped) Currently Fix projects as they Fail Now moving towards Fail to Fix projects Can we afford the infrastructure in our inventory?
Budget Comparisons - FY 2007 - FY 2012 ($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 94.0 0.2 90.0 0.3 91.0 0.1 100.0 0.1 104.0 0.1 104.0 0.0 Construction 1,555.0 58.0 1,523.0 167.1 1,402.0 177.3 1,718.0 181.0 1,690.0 215.2 1,480.0 210.7 O&M 2,258.0 68.5 2,471.0 83.3 2,475.0 83.4 2,504.0 84.8 2,361.0 78.1 2,314.0 83.0 FCCE 81.0 40.0 40.0 41.0 30.0 27.0 GRF 164.0 177.0 180.0 190.0 193.0 196.0 TOTAL 4,733.0 126.6 4,871.0 250.6 4,741.0 260.8 5,125.0 265.8 4,939.0 293.3 4,631.0 293.7 % 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??
Cumberland River Profile 1 2 3 4 Dam Safety Action Classification (DSAC) Level
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
Operation Watershed 4/26/2011 5/4/2011 Rainfall & Project Operations Cumberland River Basin Elevation (ft) 730 725 720 715 710 705 Operation Watershed - Wolf Creek Dam Observed Without Reductions Top of Hydropower Pool Barkley Lock & Dam Cheatham Lock & Dam Cordell Hull Lock & Dam 700 695 4/12 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) 662 660 658 656 Observed Without Reductions Dale Hollow 0.51 J. Percy Priest 0.65 Center Hill 0.95 654 652 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 660 655 Observed Without Reductions Operation Watershed - Center Hill Dam 506 504 502 Operation Watershed - J. Percy Priest Dam Top of Flood Control Pool Observed Without Reductions Center Hill Dam Elevation (ft) 650 645 640 Top of Hydropower Pool 500 635 Storage at Peak Elevation Elevation (ft) 498 496 494 630 625 4/12 4/22 5/2 5/12 5/22 6/1 492 Available 490 488 Peak 4/12 4/22 5/2 5/12 5/22 6/1 Pie area scaled to storage capacity
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
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
Treviicos Soletanche JV Proposal Wall Dam Protective Concrete Embankment Wall (PCEW) Foundation Soil Bedrock
Timeframe Major Construction Contracts 2008-10 (1) Grouting at Embankment and Left Rim Complete 2011-14 (2) Barrier Wall at Embankment Award Sep 2011 2012-14 (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 2014 13 Legend Grout Curtain Barrier Wall Cave Feature Sinkholes
Center Hill Grouting Program 419 260 421 Slide 14
Center Hill Barrier Wall (Looking Upstream) Encasement Wall
Roller Compacted Concrete (RCC) Stability Berm Downstream of the Saddle Dam Embankment Slide 16
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) 576 413 155 1 23 155 1 125 2,171 3.6 3.9 6.1 1 1.4 1.2 Source: Texas Transportation Institute, Dec 2007
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
Overall Project July 2011 Slide 19
BUILDING STRONG
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
Lock Excavation - 6 Oct 2011 Slide 22
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 - $79.6M in ARRA funds - allowed new lock construction to resume after its halt in 2006.
KY Lock Future Funding Existing ARRA - Maintain construction activities thru 1 st Quarter FY 13 (Upstream Lock Monoliths). To meet 2016 project completion date requires additional funds in FY 12 Status of IWTF Unlikely project receives significant additional funding until at least FY 13 - Depends on the fix to the IWTF by Congress No additional funding in FY 13 Mothball project
O&M Project Review Mississippi R. Ohio R. Paducah Kentucky Tennessee Barkley Cumberland R. Cheatham Nashville Cumberland River Basin Kentucky Old Hickory Wolf Creek Cordell Hull Laurel Dale Hollow Martins Fork Knoxville Virginia Tennessee R. J.Percy Priest Center Hill Melton Hill Ft. Loudoun Watts Bar North Carolina Mississippi Pickwick Wilson Wheeler Chattanooga Nickajack Chickamauga Georgia South Carolina Alabama Guntersville Tennessee River Basin Lock & Dam Dam
O&M Funding ($ Millions) FY 08 FY 09 FY 10 FY 11 ARRA FY 12 TN River Budget TN River Approp CU River Budget CU River Approp 23.4 21.4 20.6 20.1-21.8 21.9 17.1 19.6 19.6 25.2 59.9 62.0 64.0 57.9 57.8 58.8 57.9 71.2 93.1 37.1
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
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
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