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Published byDulcie Powers Modified over 9 years ago
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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
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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
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Project Sites
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Disposal Site: Pier G North Slip
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Pier G North Slip Fill
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Pier G Fill
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Catalina Express Terminal Maintenance Dredging
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Target Dredge Depths Area A = 4’+2’ OD Area C (west) = 4’+2” OD Area C (east) = 2’+2’ OD Final Removal Volume Area A = 147,000 CY Area C (west) = 221,000 CY Area C (east) = 134,000 CY Total = 502,000 CY IR Site 7 West Basin Dredge Areas IR Site 7 West Basin Dredge Areas
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Clamshell Dredge at IR Site -7
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IR Site -7 Material in Dump Scow
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IR Site -7 Material at Pier G Fill
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Phase 2 – Dredging Turning Basin PIER G 3500’ WEIGHTED HDPE PIPE 4000’ WEIGHTED HDPE PIPE 1000’ STEEL PIPE 2000’ WEIGHTED HDPE PIPE 1400’ FLOATING STEEL PIPE 80’ STEELPIPE 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
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Dike Construction
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HR Morris Cutterhead
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Channel Dredging
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Turning Basin Dredging
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Hydraulic Discharge within Fill
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Emergent Fill at Pier G
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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)
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Construction Costs Engineer’s Cost Estimate : $44M Area Cost Fill Area (Wall, Dike, dredging) $15.7 Million Catalina Express Terminal $0.8 Million IR Site 7 $11.5 Million Turning Basin and Channel (50/50 Fed Funded project) $9.6 Million Miscellaneous Items $2.2 Million Total Bid Amount: $39.8 Million Army Corps of Engineers cost share amount: $4.8 Million
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http://www.polb.com Questions
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