1. US Army Corps of Engineers BUILDING STRONG ® Mouth of the Columbia River (MCR) Jetties Laura Hicks Chief, Planning and Project Management Branch Pacific Northwest Waterways Association June 27-29, 2011

2. BUILDING STRONG ® PORTLAND DISTRICT Purpose: Project Functions  Stabilize deep-draft navigation channel through a regionally significant ocean inlet  Provide protection from waves and currents for all navigation  Minimize dredging requirements of channel  Minimize structure repair frequency and magnitude

3. BUILDING STRONG ® PORTLAND DISTRICT Functioning Jetties at the MCR support the following:  $17 billion in international trade  45 million tons of cargo 1  3,500 cargo vessel crossings 1  1,600 crossings at greater than 30 feet 1  The lives of mariners and fishermen  More than 40,000 maritime-related jobs 1 Data from Waterborne Commerce of the United States, 2008

4. MCR Jetties Major Rehabilitation North Jetty 2.5 miles long 1914-1917 Peacock Spit Pacific Ocean Columbia River Estuary Clatsop Spit South Jetty 6 miles long 1885-1913 Jetty “A” 1 mile long 1938-39 Sand Island pile dikes 1930-1935

6. MCR North Jetty - Construction and Repair History 1917 1939 19652005 (Receded approximately 1800’ in length since 1916.)

7. MCR South Jetty - Construction and Repair History 1906-19131886-1895 1931-1936 1961- 1962 1982 2006 2007 (Receded approximately 4500’ in length since 1913)

8. Base Condition Dune Augmentation/Stabilization South Jetty Root & Trestle Bay Letter Report, P&S, Beach Material Placement

9. BUILDING STRONG ® PORTLAND DISTRICT South Jetty: The Observed Historic Movement of the Shoreline

10. Dec. 2009 Apr. 2010 Jan. 2010 Apr. 2010 Note the shoreline in relative to the tree line.

11. May 2010 Dec 2010 Note the shoreline in relative to the tree line.

12. Major Maintenance Report  North Jetty Lagoon and Wetland Fill ► Detailed Design Report, Plans & Specifications, Award Contract ► Loss of 1.8 acres of wetlands and 4.70 acres of waters of the US. ► Locating and developing mitigation site. ► Redirecting stream away from lagoon wetlands. Replacing Jetty Road culvert

13. North Jetty Lagoon and Wetland Fill FeaturesNorth Jetty Timing of construction 2013-2014 Material used for fillSand, gravel, quarry stone Short-term and long- term use Stockpile area, long-term stabilization of root De-watering Culvert feeding into area will be replaced Impact on wetlands1.14 acres Impact on Section 404 waters 8.02 acres

14. Major Maintenance Report North Jetty Critical Repairs STA 86 – 99

15. BUILDING STRONG ® PORTLAND DISTRICT Major Maintenance Report North Jetty Critical Repairs STA 86 – 99

16. Action FY 2013 Contract FY 2013 E&D and S&A FY2014 E&D and S&A Total Cost 1 N. Jetty Lagoon Fill $9.72M$1.12M$0.57M$11.4M 2 N. Jetty, Reaches 1, 2 & 3: Stations 86-99 $12.7M$1.45M$0.76M$14.9M 3 N. Jetty, Reach 1: Stations 86-92 $6.75M$0.77M$0.4M$7.93M 4 N. Jetty, Reaches 1 & 3: Stations 86-92 & 96-99 $10.6M$1.22M$0.63M$12.5M Construction Schedule

17. BUILDING STRONG ® PORTLAND DISTRICT Major Rehabilitation Report Status:  Draft IEPR report complete  SRB model disapproved  HQUSACE issuing memo regarding model disapproval  Based on a draft memo, district developed a path forward

18. BUILDING STRONG ® PORTLAND DISTRICT Major Rehabilitation Report Path Forward:  Break planning model into distinct pieces, separating hazard functions, quantities, cost estimates, progressive damage calculations, etc.  Hire a professional Matlab programmer to work collaboratively with coastal engineer to document and rewrite code.  Coordinate with Division and HQUSACE vertical team to sign off on plan to obtain MRR approvals. Timeline:  Complete updated MMR and engineering analysis by 30 Nov 2011