Enbridge Northern Gateway Project Marine Mammal Protection Plan June 6, 2013 – WWF Ocean Noise...
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Transcript of Enbridge Northern Gateway Project Marine Mammal Protection Plan June 6, 2013 – WWF Ocean Noise...
![Page 1: Enbridge Northern Gateway Project Marine Mammal Protection Plan June 6, 2013 – WWF Ocean Noise Workshop.](https://reader035.fdocuments.us/reader035/viewer/2022062713/56649ced5503460f949ba962/html5/thumbnails/1.jpg)
Enbridge Northern Gateway ProjectMarine Mammal Protection Plan
June 6, 2013 – WWF Ocean Noise Workshop
![Page 2: Enbridge Northern Gateway Project Marine Mammal Protection Plan June 6, 2013 – WWF Ocean Noise Workshop.](https://reader035.fdocuments.us/reader035/viewer/2022062713/56649ced5503460f949ba962/html5/thumbnails/2.jpg)
Presentation Outline
• Overview of the Northern Gateway project• Potential routine effects on marine mammals• Marine Mammal Protection Plan• Proposed mitigation measures and commitments
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The Project – In a Nutshell…
• Proposing to build twin pipelines between Bruderheim, Alberta and Kitimat, British Columbia
• Associated two-berth marine terminal• 220 tanker calls per year
Proposed Northern Gateway Traffic
Vessel Class Average Number Per Year
Type DWT Oil Condensate Total
Aframax 80,000 (min) 33 17 50
Suezmax 160,000 (avg) 65 55 120
VLCC 320,000 (max) 50 0 50
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Open Water Area (OWA)
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Confined Channel Assessment Area (CCAA)
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Project Effects Assessment Area (PEAA)
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Potential Routine Effects – Underwater Noise
Construction Activities – Kitimat Terminal•Use of rock sockets (no pile driving)•Underwater blasting
Operations – Marine Transportation Activities•Auditory damage not predicted (noise ≥180dB re: 1µPa)•Potential behavioural effects (noise ≥ 120dB re: 1µPa)•May result in reduced feeding efficiency, temporary displacement, or energetic stress•Herding has been identified as a potential concern in confined channels
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Comprehensive Mitigation Program
Northern Gateway is committed to minimizing or eliminating adverse environmental effects of the
Northern Gateway Pipelines Project on the marine environment.
Marine Mammal Protection Plan
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Marine Mammal Protection Plan
• Purpose: to outline measures that Northern Gateway will implement in the PEAA, CCAA and OWA to manage and monitor Project-related environmental effects on marine mammals associated with underwater noise, blasting, and other potential marine mammal-vessel interactions
• Currently filed as a framework document• Living document – multiple iterations• Comprehensive MMPP will be developed through an
engagement process that will include:– Fisheries and Oceans Canada (DFO),– participating Aboriginal organizations, and – external research organizations and experts
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Means of Reducing Effects
Three Stages to Consider Potential for Mitigations
Design•Reduce noise at the source
Operations•Reduce noise produced
Monitoring and Follow-up•Adaptive management and research
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Design Stage Considerations
• Northern Gateway is committed to incorporating best commercially-available technology at the time of the design and construction of purpose-built tugs, so that escort and harbour tugs produce the least underwater noise possible.
• Propeller design • Vibration reduction
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Operations Stage Considerations
Speed Reductions•Reduce the relative likelihood of a vessel strike, and the likelihood of severe injury or mortality•Reduce the intensity of underwater noise•Throughout the year, tankers and tugs will travel at 10-12 knots in the CCAA
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Speed Reductions
High Whale Density Area•Travel at 8 to 10 knots in core humpback whale area•Boundaries will be refined through 6 years of marine mammal density surveys•Dropping from 15 kts to 9.6 kts reduce sound input by nearly 12 dB•Comparison – 10 dB:
– Extent: 1/3– Perception: ½ as loud
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Monitoring Stage Considerations
Research and Monitoring•Remote detection technologies – commitment to a four-year passive acoustic monitoring studyCooperative Research Initiative•Northern Gateway has committed to undertaking a cooperative research initiative and broad-scale regional assessment program in collaboration with government, industry (shipping, fishing, and recreational fishing), other project operators, participating Aboriginal groups, StakeholdersGoal•Cooperative regional approach to developing mitigation measures for limiting the effects of vessels on marine mammals.
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Things We Didn’t Talk About…
Marine Mammal Protection Plan•Construction - Underwater Blasting
– predictive acoustic modelling and in-field validation
– marine mammal observers during all loud activities (i.e., blasting, dredging, and drilling)
– support vessel maintenance and operations•Quantitative Vessel Strike Analysis•Whale Spotting Vessel•Port Information and Operations Manual•Informational DVD and Video Package for Tankers
Other Aspects•Acoustic modelling done as part of the environmental assessment
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Thank you for your time.
Questions?