McDowell

Information about McDowell

Published on October 29, 2007

Author: Charlie

Source: authorstream.com

Content

Coastal Ballast Water Exchange on the West Coast of North America: Developing a Regional Plan (2001- 2003):  Coastal Ballast Water Exchange on the West Coast of North America: Developing a Regional Plan (2001- 2003) Karen McDowell San Francisco Estuary Project Coastal Traffic:  Coastal Traffic Travels near-shore (unable to conduct open ocean exchange 200 nautical miles offshore) Concern for the coastwise transport of organisms Native and Non-native San Francisco Bay to Oregon and/or Washington, Mexico to California Short travel time/frequent discharge/repeat visits (high survival rate/repeat inoculations) Open Ocean Exchange – Currently the only approved management tool. Potential Solutions:  Potential Solutions Shipboard Treatment – Ultimate Solution Conduct a ballast water exchange without going 200 nautical miles offshore in specific areas (only talking about water that originates from the West Coast of North America) Trade-offs Exchanging too close to shore could result in inoculating the coastline with ANS. Time and cost constraints for the vessels/carriers Regulatory Programs (2000-2002):  Regulatory Programs (2000-2002) Transoceanic traffic Fairly Uniform Coastal Traffic Conflicts between the different state programs Maritime Industry wants a uniform program Coastal Traffic (2000-2002):  Coastal Traffic (2000-2002) CA Program – Did not have domestic coastal program until 2006. Washington & Oregon - Mandatory requirements for ballast water exchange for coastwise traffic (domestic and foreign) WA (50 nautical miles offshore) & Oregon (no distance offshore) Regulations:  Regulations States/Provinces set up programs to try to protect their waters. Limitations in what they can do – only have authority for ships discharging in their waters. Might protect state waters, but not be good for neighbors, or make sense on a regional basis Determine the best solution for the entire region, rather than a state by state approach. Solving the Problem:  Solving the Problem Examine the oceanography and biology to determine the best solution, taking into account the constraints of the shipping industry. Regional Approach Partners: West Coast Ballast Outreach Project, Pacific States Marine Fisheries Commission, Portland State University, California State Lands Commission, Washington Department of Fish and Game, and the Pacific Ballast Water Group, along with members from the maritime industry and environmental NGO’s. Time-Line:  Time-Line March 2002 – Oceanography Workshop Report – West Coast Oceanography: Implications for Ballast Water Exchange Follow-up workshop January 2003 Stakeholders reviewed the oceanography report. April 2004 – State Lands Commission held a workshop to discuss regulations for coastal traffic in California Oceanography Workshop/Report:  Oceanography Workshop/Report Participants Barbara Hickey, University of Washington Jack Barth, Oregon State University Curtis Collins, Naval Postgraduate School Goal: Compile the current information on coastal processes on the West Coast to enable informed decisions on how best to manage ballast water in coastal shipping to minimize the risk of ANS establishment. March 2002 – December 2002 - Small budget Recommendations:  Recommendations #1 Retention Zones - Due to their retentive abilities, these areas should be considered as possible exclusion zones for ballast water exchange (from the shoreline to 50 nautical miles offshore). #2 1000m Isobath - Along all other areas of the coast, any ballast water discharged outside of the 1000 m isobath has a relatively low probability of reaching the shoreline. #3 – Seasonal Fluctuations - Seasonal fluctuations should also be considered when determining “when and where” to exchange ballast water. Retention Zones:  Retention Zones Strait of Juan de Fuca Eddy (48’30”N to 47’40”N) Heceta Bank (45’00”N to 43’45”N) Central California Retention Zone (Between Point Reyes and Sur)(36’30”N to 38’50”N) The Southern California Bight (33’00”N to 34’30”N) The Columbia River Plume Retention Zone. In addition, other river or estuarine plumes, including those from Grays Harbor and Willapa Bay in Washington, Coos Bay and Yaquina Bay (Newport) in Oregon, and San Francisco Bay in California have the capacity to pull water into the estuary within a few tens of kilometers of the mouth of each estuary on each tidal cycle. Isobath lines Latitude vs. Distance Offshore:  ~=25NM (46.3 km) ~=50NM (92.6 km) Isobath lines Latitude vs. Distance Offshore Figure created by Jack Barth Coastal Exchange Workshop:  Coastal Exchange Workshop Stakeholders reviewed the oceanography report. (Marine Biology, Maritime Industry, Government, Environmental Groups) 50 participants Goal: Outline potential regional plans for coastal ballast water exchange Coastal Exchange Workshop: Day 1:  Coastal Exchange Workshop: Day 1 Reviewed Coastal Ballast Water Exchange and the Oceanography Report (Dr. Curtis Collins). Broke into Working Groups (like groups) Biology: We know that estuary to estuary transport is bad, so it is important to exchange on coastal voyages to reduce the risk of invasion. We are not sure how vulnerable the open coastline is to invasion, so for now the farther offshore the better. Shipping Industry: willing to move further offshore in some regions. Government Agencies: Regulations need to be enforceable, meaningful, & understandable. Don’t wait for certainty, coastal exchange as an interim measure. Coastal Exchange Workshop: Day 2:  Coastal Exchange Workshop: Day 2 Presenting findings from Day 1 Working Groups Broke into 3 mixed groups and came up with Draft regional plans for coastal ballast water exchange (all 3 groups came up with a similar plan) 50 nautical miles 15-25 nautical miles Post Workshop:  Post Workshop Workshop Summary Planned to Review and refine plan Overlay draft plan again with shipping routes, isobaths (200m & 1000m), and retention zones. Review and Revise February 2004 – IMO passed Ballast Water Convention April 2004 –State Lands Commission held a workshop to discuss regulations for coastal traffic in California Summary:  Summary Conflicting regulations were being set along the coast. Pulled together current knowledge and came up with best possible solution on a short time-line. Biologists - estuary to estuary transport is bad, so it is important to exchange on coastal voyages to reduce the risk of invasion (even though we are not sure how vulnerable the open coastline is to invasion). The farther offshore the better (since risk of open coastline is unknown). Used information from physical oceanographers to determine distance offshore. Uniform regulations for coastal traffic are now in place. Slide19:  Karen McDowell San Francisco Estuary Project 1515 Clay Street, Oakland, CA 510-622-2398 [email protected]

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