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DREDGING THE MIGHTY FRASER RIVER >
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AGENDA > FRPD > About Us > Fraser River Dredging Program > Dredging > Why, where & how? > Dredging Materials Management > Questions
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DREDGING THE MIGHTY FRASER RIVER > Port of Vancouver | Delta - - PowerPoint PPT Presentation
DREDGING THE MIGHTY FRASER RIVER > Port of Vancouver | Delta - - PowerPoint PPT Presentation
DREDGING THE MIGHTY FRASER RIVER > Port of Vancouver | Delta Community Office November 28, 2017 1 AGENDA > FRPD > About Us > Fraser River Dredging Program > Dredging > Why, where & how? > Dredging Materials Management
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FRPD > About Us
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Fraser River Pile & Dredge (GP) Inc. (FRPD) is one
- f Canada's largest Marine & Infrastructure, Land
Foundations and Dredging contractor.
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- Marine Construction Capabilities for any size structure
- r facility on Canada’s West Coast
- 10 Marine Derricks to 350 Ton Craning Capacity
- 16 Cranes available for Land Foundation Projects up to
225 Ton Capacity
- Rock Drilling & Pile Socketing up to 1524 mm dia.
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We are committed to providing to: > Our employees with a safe and rewarding place of employment and opportunities for ongoing professional growth; > Our customers with innovative and cost effective solutions through intelligent use of resources; and > Our communities with sustainable and environmentally sound business practices.
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Fraser River Maintenance Dredging Program >
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1900 1980 1998 1999 2010+
1900 – mid- 1980’s
> Federal government responsible for
- maint. dredging
> Administered by Public Works Canada (PWC) until mid-1980’s
1999 – 2010
> FRPD awarded 10 year maint. dredging contract (1999 – 2009) > 2006: FRPD awarded contract extension > 2008: Port amalgamation to
2010 – Current
> 2010: VFPA puts out RFP internationally > 2011: FRPD awarded 10 year maint. dredging contract (2012 – 2022)
Fraser River Maintenance Dredging Timeline
mid-1980’s
> FRPD begins maint. dredging (mid-1980’s – 1998)
1998
> Fraser River Port Authority (FRPA) now responsible for maint. dredging > FRPA puts out RFP for maint. dredging
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Dredging > Why?
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The Vancouver Fraser Port Authority (VFPA) is responsible for providing safe & unimpeded access for vessels to terminals at the Port of
- Vancouver. Ensuring appropriate water depth is a
primary component to this safe access and often requires dredging - the removal of sediment - from the Fraser River seabed. VFPA mandates that this dredging must be economically, environmentally and socially sustainable.
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Port of Vancouver Dredging Philosophy
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Dredging > Why?
Freshet*
*freshet: the flood of a river from heavy rain or melted snow
> The Fraser River
freshet typically occurs between May and July
- f each year
> The increased flow
rates transport sediments down the river
> This sediment
transport process is what creates “infill”
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Dredging > Why?
> The Fraser River requires annual dredging because
- f the continuous
run-off of the river and the silt that is deposited from upstream as it nears the sea
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Dredging > Why? Safe Navigation
> The Fraser River deep
sea shipping channel is vital to the Canadian economy
> This supports the Port’s
mandate to facilitate marine trade
> Provides access to river
terminals such as Fraser Surrey Docks and Annacis Auto Terminals
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Dredging > Why? Flood Protection
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Without dredging, the lower reaches of the river bottom would rise and therefore require higher dykes
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The 200 year flood level predictions are based on the assumption that the dredging program continues
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Upriver of Port Mann Bridge the river is managed by dykes
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Downriver of the Port Mann Bridge the river is managed by dykes, training structures and dredging
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Dredging > Where & When?
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Dredging > Where? Survey Program
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CCG through PWGSC runs their survey program which monitors the channel conditions
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FRPD also conducts hydrographic surveys to monitor channel condition and determine dredging priorities
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Both parties implement the latest survey/positioning technology available to produce the most accurate data for use in the setup
- f vessel traffic and in dredging
priorities
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> Prior to dredging all activities require approvals
> Applications categorized from A to D > For material to be disposed at sea, the material requires chemical and physical testing and a DAS permit
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Dredging > How?
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> Equipment:
> Dredging requires intensive capital investment in equipment > FRPD owns and operates 3 types of dredges which conduct dredging operations in the Fraser River
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Dredging Equipment Trailing Suction Hopper
“FRPD 309”
> Built 1983 > Purchased 2012 > 4,500 m3 capacity (450 dump trucks) > Load in approx. 1 hour > Either bottom dump of pump ashore to upland stockpile (1.5hrs) > Discharge pipe
diameter of 800mm
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Dredging Equipment Cutter Suction
“Sceptre Columbia”
> Pumps 1,500m3/hour (150 dump trucks per hr) > Discharge pipe diameter 650mm > Can deliver sand to 2 kilometers through pipeline > Can either pump to upland stockpile or in- river disposal
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Dredging Equipment Clamshell
> Bucket sizes vary > Places material in dump or flat scows > Material is typically taken to DAS - Ocean Disposal
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Dredging Materials Management >
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FRPD’s goal is to maximize beneficial use of dredged material in order to minimize ocean disposal. > The options for beneficial use are:
> Upland Placement – Construction Use > Land Reclamation > Environmental Habitat Creation
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Dredging Materials Management Upland Placement
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Dredging Materials Management Upland Placement
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Dredging Materials Management Land Reclamation
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Dredging Materials Management Environmental Habitat Creation
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Questions >
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