Sound Transit 6/17/09 Noise And Construction Meeting


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Sound Transit 6/17/09 Noise And Construction Meeting

  1. 1. Agenda <ul><li>6:00 Open House </li></ul><ul><li>6:30 Presentations </li></ul><ul><ul><ul><li>Welcome (Ron Endlich) </li></ul></ul></ul><ul><ul><ul><li>Project Overview (Michelle Ginder) </li></ul></ul></ul><ul><ul><ul><ul><li>Construction sequence and activity </li></ul></ul></ul></ul><ul><ul><ul><ul><li>Construction Updates (ped safety, site walls) </li></ul></ul></ul></ul><ul><ul><ul><li>Nighttime Construction Noise (Jeff Munnoch) </li></ul></ul></ul><ul><ul><ul><ul><li>Noise Variance Process </li></ul></ul></ul></ul><ul><ul><ul><ul><li>Noise Impacts and Mitigation </li></ul></ul></ul></ul><ul><ul><ul><ul><li>Community Involvement and Next Steps </li></ul></ul></ul></ul><ul><li>7:15 Q & A </li></ul><ul><li>7:45 Return to Open House </li></ul>
  2. 2. Sound Transit Capitol Hill Station Construction Noise and Project Update June 17, 2009 6:00 – 8:00 PM
  3. 3. Agenda <ul><li>6:00 Open House </li></ul><ul><li>6:30 Presentations </li></ul><ul><ul><ul><li>Welcome (Ron Endlich) </li></ul></ul></ul><ul><ul><ul><li>Project Overview (Michelle Ginder) </li></ul></ul></ul><ul><ul><ul><ul><li>Construction sequence and activity </li></ul></ul></ul></ul><ul><ul><ul><ul><li>Construction Updates (ped safety, site walls) </li></ul></ul></ul></ul><ul><ul><ul><li>Nighttime Construction Noise (Jeff Munnoch) </li></ul></ul></ul><ul><ul><ul><ul><li>Noise Variance Process </li></ul></ul></ul></ul><ul><ul><ul><ul><li>Noise Impacts and Mitigation </li></ul></ul></ul></ul><ul><ul><ul><ul><li>Community Involvement and Next Steps </li></ul></ul></ul></ul><ul><li>7:15 Q & A </li></ul><ul><li>7:45 Return to Open House </li></ul>
  4. 4. <ul><li>3.15-mile extension of Initial Segment and Airport Link </li></ul><ul><ul><li>Capitol Hill Station </li></ul></ul><ul><ul><li>UW Station and crossover </li></ul></ul><ul><li>Schedule </li></ul><ul><ul><li>Design: completed </li></ul></ul><ul><ul><li>Construction: 6.5 years </li></ul></ul><ul><ul><li>System testing: 6 months </li></ul></ul><ul><ul><li>Open for Service: 2016 </li></ul></ul><ul><li>Adds 70,000 daily riders, 114,000 riders systemwide (2030) </li></ul>University Link
  5. 5. Capitol Hill Station <ul><li>Underground station with 3 entrances </li></ul><ul><li>Staging area - station and tunnel excavation at site </li></ul><ul><li>Ridership: 14,000 daily boardings </li></ul><ul><li>Travel time: </li></ul><ul><ul><li>6 minutes to downtown Seattle (University St.) </li></ul></ul><ul><ul><li>3 minutes to UW Station </li></ul></ul>
  6. 6. Capitol Hill Station Schedule 1 2 3 4
  7. 7. <ul><li>Demolition and Remediation </li></ul><ul><li>Jan. 2009 to mid-2009 </li></ul><ul><li>75% Recycling and salvage goal being met </li></ul><ul><li>Construction trailers </li></ul><ul><li>Site will be lowered, paved and remain fenced </li></ul>
  8. 8. Recycled and Salvaged Items <ul><li>A large amount of materials that otherwise would have been taken to landfills has been removed for re-use. </li></ul><ul><li>Recycled Demolition Material to Date: 2,890 Tons </li></ul>
  9. 9. 2. I-5 Undercrossing Work <ul><li>I-5 undercrossing contract awarded in February </li></ul><ul><li>Prepares I-5 structures for future tunnel boring machines </li></ul><ul><ul><li>Work being done now to avoid conflicts with other WSDOT freeway work and later U-Link contracts </li></ul></ul><ul><ul><li>Coordinated agency outreach to public on ramp closures </li></ul></ul><ul><ul><li>Contractor incentives to complete the work early </li></ul></ul>Paramount Theater Convention Place Station PINE STREET BOREN STREET NB I-5 SB I-5 Work Area Work Area
  10. 10. I-5 Ramp Closures Pine Street Pike Street Detour info at -link   
  11. 11. 3. Station Excavation, Tunneling <ul><li>Jan. 2010 to Dec. 2012 </li></ul><ul><li>Fenced work sites </li></ul><ul><li>Denny Way and parts of Nagle Place closed to traffic </li></ul><ul><li>Sidewalks open </li></ul><ul><ul><li>Will be few short term closures </li></ul></ul><ul><li>Single Tunnel Boring Machine (TBM) </li></ul><ul><li>24/7 surface activity to support tunneling </li></ul><ul><li>High truck volumes </li></ul>
  12. 12. Construction Walls <ul><li>Plywood walls will surround and screen main construction site perimeter 2010-2015 </li></ul><ul><li>Wall Height: </li></ul><ul><ul><li>8 ft. tall along Broadway </li></ul></ul><ul><ul><li>16 ft. tall along 10 th Ave </li></ul></ul><ul><ul><li>Transition from 8 to 16 ft. along northern (John St.) and southern borders </li></ul></ul><ul><li>Contractor required to maintain fence (repaint annually, graffiti removal within 24 hours) </li></ul><ul><li>Appearance will include ST Art program elements, ST project information, and Capitol Hill business marketing elements </li></ul>
  13. 13. Truck Haul Routes (beginning 2010) <ul><li>High visibility crossing signs </li></ul><ul><li>Re-stripe crosswalks </li></ul><ul><li>Restrict parking at intersections </li></ul>
  14. 14. SDOT Pedestrian Improvements <ul><li>Crosswalk and warning signs on the east leg of Summit Ave and Denny Way </li></ul><ul><li>Curb bulb on the SW corner of E Denny Way and Boylston Ave. </li></ul><ul><li>Further options to improve the crossing of Olive Way at Boylston Ave. are under consideration </li></ul>
  15. 15. 4. Station Construction <ul><li>Jan. 2013 to Dec. 2015 </li></ul><ul><li>Less trucking activity </li></ul><ul><li>Sidewalks open </li></ul><ul><ul><li>Will be few short term closures </li></ul></ul><ul><li>Cut and cover pedestrian tunnel across Broadway (6 months) </li></ul><ul><ul><li>Roadway remains open </li></ul></ul><ul><ul><li>Parking restrictions near work </li></ul></ul>
  16. 16. Capitol Hill Station Construction Noise Variance for Nighttime Construction
  17. 17. Why must work occur at night? <ul><ul><li>Anticipate two years of 24/7 construction activity to support tunneling work at Capitol Hill site beginning in early 2011 </li></ul></ul><ul><ul><li>Certain activities are required for tunnel worker safety </li></ul></ul><ul><ul><li>Maximizes project safety, efficiency, duration and cost </li></ul></ul>
  18. 18. <ul><li>What goes on at night? </li></ul><ul><li>No high impact equipment (jackhammers, concrete saws, etc.) </li></ul><ul><li>Type of Equipment : </li></ul><ul><li>Tunnel ventilation fans, pumps, air compressors </li></ul><ul><li>Generators </li></ul><ul><li>Vehicles </li></ul><ul><ul><li>hauling and delivery trucks </li></ul></ul><ul><ul><li>muck haul trucks </li></ul></ul><ul><ul><li>front-end loaders, backhoe </li></ul></ul><ul><ul><li>loaders, excavators </li></ul></ul>
  19. 19. Noise Mitigation Requirements Solid plywood construction screening wall between 8-16’ tall around site
  20. 20. Stationary equipment (compressors, generators) enclosed in noise reducing material Noise Mitigation Requirements
  21. 21. <ul><li>Nighttime Truck Operations </li></ul><ul><ul><li>No tonal back up alarms </li></ul></ul><ul><ul><li>Engine idle limit of 5 minutes </li></ul></ul><ul><ul><li>Haul trucks prohibited on 10 th Ave E during night hours </li></ul></ul><ul><ul><li>No compression brakes </li></ul></ul><ul><ul><li>Muck haul bins lined with noise dampening material </li></ul></ul>Noise Mitigation Requirements
  22. 22. Existing noise on 10 th Ave Existing noise on Broadway
  23. 23. Nightime Noise Predictions Hourly night-time average 54 dba existing 65 dba construction + 0 to11 dba 65 dba existing 70 dba construction + 0 to 5 dba
  24. 24. Monitoring and Responding to Complaints <ul><li>Continuous sound monitoring stations </li></ul><ul><li>24 - hour construction hotline: 1-888-298-2395 </li></ul><ul><li>Independent response by City Noise Abatement Specialist </li></ul><ul><li>City, ST and contractor will investigate, determine how to prevent future incidents, and respond back to caller </li></ul><ul><li>City review after 1 year </li></ul>
  25. 25. Capitol Hill Site Noise Variance <ul><ul><li>Requires application for Major Public Project Construction Noise Variance from City of Seattle </li></ul></ul><ul><ul><li>Noise variance establishes noise limits for contractor work between 10pm - 7am weekdays, 10pm - 9am weekends, holidays </li></ul></ul><ul><ul><li>Daytime construction activities will comply with City’s construction noise limits </li></ul></ul>
  26. 26. Next Steps <ul><li>Receive comments and questions tonight </li></ul><ul><li>ST to incorporate feedback into variance application </li></ul><ul><li>City of Seattle (DPD) will hold a public meeting to receive comments late summer </li></ul><ul><li>City will decide whether to approve a noise variance within 60 days after public comment is received </li></ul><ul><li>Contractor will prepare a detailed noise management plan </li></ul><ul><li>Follow-up information at meeting(s) later this year </li></ul><ul><li>Tunnel construction activities begin – early 2011 </li></ul>
  27. 27. Staying Informed <ul><li>Monthly electronic newsletters /subscribe </li></ul><ul><li>Printed and electronic construction alerts </li></ul><ul><li>Regular construction update meetings </li></ul><ul><li>Full time outreach staff </li></ul><ul><li>24 hour construction hotline 1-888-298-2395 </li></ul>
  28. 28. Questions?