Download - Feb 2010 Portland Same Presentation Vs 1.6
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Contract No. W9127N-09-C-0026
U.S. Army Corps of Engineers Portland District
Columbia River Channel Improvements (CRCI) Rock Removal 2009
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Vital U.S. Export Gateway
Primary international export gateway for 11 states in the Pacific Northwest & Upper Midwest
1st in the nation for U.S. wheat exports 2nd largest export gateway on West Coast3rd in the world for grain exports
Construction Contracts
FY 2005 Great LakesFY 2006 Bean/StuyvesantFY 2007 J.E McAmis Inc./ Consolidated Rock at Port of VancouverFY 2007 - 2008 Great Lakes FY 2009 J.E. McAmis Inc.
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Congressional Study Resolution Aug 89Feasibility Study Initiated Apr 94Draft Feasibility Report/EIS Oct 98Final Feasibility Report/EIS Aug 99Oregon CZMA Dec 99USFWS and NMFS Bi-Ops Dec 99Project Authorization Dec 99
NMFS Bi-Op Withdraw Aug 00State Water Quality Denials Sep 00Corps Reinitiates Consultation Sept 00
Corps Decides to Supplement Jan 02Integrated Feasibility Report/EIS
Washington State Environmental Policy Act-- Port of Longview; Lead Agency
NMFS and USFWS Bi-Ops May 02Draft Supplemental EIS Jul 02Final Supplemental EIS Jan 03
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St. Helen’s Area550,000 SF Drilling and Blasting500,000 CY Dredging
Longview Area2,500,000 CY Dredging
CRCI 2009 PROJECT COMPONENTS
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ST. HELENS PROJECT COMPONENTS
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Test Dig Electrical Resistivity Testing Seismic Refraction Exploration
ST. HELENS AREA PRELIMINARY INVESTIGATION
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Test Dig Sample Characteristics
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Introduction: To help determine the extent of basalt bedrock and the degree of fracturing in the study area.
Electrical Resistivity Exploration
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Electrical Resistivity Exploration
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Seismic Refraction ExplorationAll of the bedrock velocities measured in this study exceeded 14,600 ft/sec.
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Seismic Refraction Exploration
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Rock would require preparation by blasting and efficient dredging of prepared rock would not be feasible by any means other than a large excavator type dredge.
Conclusions of Preliminary Investigations
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Type of explosives Blasting platform & support equipment Preparation and loading of blast holes Compliance with blast induced effects:
◦ Underwater overpressure◦ Ground vibration
Blast Patterns Schedule
Determining Proper Blasting Methods
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Blasting Platform and Support Equipment
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Drilling Template
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Dynamic Positioning System
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Dynamic Positioning System
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Dynamic Positioning System
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Drilling Operations
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Drilling Operations
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Drilling Operations
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Drilling Operations
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Preparing Charge
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CAST BOOSTER
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Preparing Charge
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Loading Holes
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Loading Holes
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Loading Holes
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HYDROMITE 1500 NYC
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Measuring Holes
Emulsions Measurement
MEASUREMENT
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Stemming Holes
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INITIATION SYSTEM
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Typical Section of Loaded Hole
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Series of Loaded Holes
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Typical Overview of Production Blast
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Inspection of Shot Lines
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Two Hour- 15 Minute- 5 Minute- Countdown- BLAST!!! All Clear for Survey Channel Reopened for
Commercial Traffic
Notifications:
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Fire in the Hole
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Dredging and Disposal Operations
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Dredge Positioning
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Outcome
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Shipping Coordination
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Shipping Coordination
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Shipping Coordination
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100% of dredge prism taken to grade 500,000 cubic yards of material transported
to Ross Island Lagoon for environmental remediation
No water quality violations No negative environmental impacts
Results
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Total number of holes drilled: 3,750 holes + Total pounds of explosives: 240,000 lbs (120 tons) + Total feet of shot line: 1,000,000 lf + Total number of blasts: 95 blasts Total number of drilling days: 85 days Total number of jobs created: 75 (60 local jobs) Total number of man hours: 35,000 hours Total number of square feet blasted: 550,000 sf Total number of cubic yards removed: 500,000 cy Total number of lost time accidents: 0 Total number of environmental incidents: 0 Total number of salmonoids/steelhead taken: 0 Total number of marine mammals harmed: 0 Total percentage of time ahead of schedule: 25%
Final Project Numbers
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Questions?