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Port of Long Beach 76 Foot Main Channel Dredging Project

Port of Long Beach 76 Foot Main Channel Dredging Project . Doug Thiessen, Port of Long Beach (POLB ),Al Moro, Chief Harbor Engineer, POLB Emily Ueda, Program Manager, POLB, Janna Watanabe, Environmental Specialist, POLB

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Port of Long Beach 76 Foot Main Channel Dredging Project

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  1. Port of Long Beach 76 Foot Main Channel Dredging Project Doug Thiessen, Port of Long Beach (POLB),Al Moro, Chief Harbor Engineer, POLB Emily Ueda, Program Manager, POLB, Janna Watanabe, Environmental Specialist, POLB Jim Fields, U.S. Army Corps of Engineers, Alan Alcorn, Moffatt & Nichol Todd Graham, KPFF, Steve Cappellino, Anchor QEA

  2. Project Goal • Improve navigation and environmental safety • Economical sediment remediation (IR Site 7) • Deepen and widen turning Basin and Main Channel • Create Port property for commerce

  3. Project Sites

  4. Disposal Site: Pier G North Slip

  5. Pier G North Slip Fill

  6. Pier G Fill

  7. Catalina Express TerminalMaintenance Dredging

  8. IR Site 7 West Basin Dredge Areas Target Dredge Depths Area A = 4’+2’ OD Area C (west) = 4’+2” OD Area C (east) = 2’+2’ OD IR Site 7 West Basin Dredge Areas Final Removal Volume Area A = 147,000 CY Area C (west) = 221,000 CY Area C (east) = 134,000 CY Total = 502,000 CY

  9. Clamshell Dredge at IR Site -7

  10. IR Site -7 Material in Dump Scow

  11. IR Site -7 Material at Pier G Fill

  12. Phase 2 – Dredging Turning Basin SCHEDULE: 4/6/2011 – 4/26/2011 (21 DAYS – 24/7) EQUIPMENT: H.R. MORRIS (CUTTER HEAD) DREDGE POWER: ELECTRIC (from Pier T) DREDGE QUANTITY: 430,000 CY DISPOSE METHOD: PUMP (24” PIPE) PRODUCTION: 17,000 PER DAY PIER G 1400’ FLOATING STEEL PIPE 2000’ WEIGHTED HDPE PIPE 1000’ STEEL PIPE 3500’ WEIGHTED HDPE PIPE 4000’ WEIGHTED HDPE PIPE 80’ STEELPIPE

  13. Dike Construction

  14. HR Morris Cutterhead

  15. Channel Dredging

  16. Turning Basin Dredging

  17. Hydraulic Discharge within Fill

  18. Emergent Fill at Pier G

  19. Surcharge Material • Originally planned to use Western Anchorage sand mine • Revised to include rolling surcharge using Port supplied crushed miscellaneous base (CMB) • 2/3 of CMB left on-site for use in developing site • Excess material used for other Port project (Middle Harbor)

  20. Construction Costs Engineer’s Cost Estimate: $44M

  21. Questions http://www.polb.com

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