Madison Valley Stormwater Project Phase 2

1. Madison Valley Stormwater Project Phase 2 Seattle Design Commission June 4, 2009 Seattle City Hall Boards and Commissions Room, L2-80

2. Three Stormwater Pipeline Alignment Options Open-Cut Trenchless Baseline

3. Selected Stormwater Pipeline Alignment = Proposed shaft location = Stormwater pipeline

4. Construction Boundaries in Washington Park

5. Existing Conditions in Washington Park Looking toward southwest corner of Washington Park View down into site from E Madison St Batting cage and south slope from lower lawn E Madison St streetscape Mixed-use building on E Madison St

6. Conceptual Landscape Plan

7. Conceptual Landscape Details BALUSTRADE / ORNAMENTAL RAILING Concrete or Cast Stone Balustrade Metal Railing on Low Wall Metal Railing on Curb

8. Conceptual Landscape Details EXISTING STORAGE TANK FACADE Synthetic Stone Natural Stone Shotcrete Stone Veneer Stone Work in Washington Arboretum Upper Lawn Overlook with Ornamental Railing Stone Façade on Tank Rain Garden and Drainage Grate Sunken Lawn Meadow with Wooded Hillside Beyond

9. Preliminary Tree Preservation Plan

10. Project Schedule