Analysis of Crude Oil Tanker Ballast Water Data for Valdez & - PDF document

9/25/14 ¡ Analysis of Crude Oil Tanker Ballast Water Data for Valdez & Prince William Sound, Alaska Danielle Verna PWSRCAC Board Meeting September 2014 Definitions • Coastwise vs. Overseas • Coastal vs. Mid Ocean • EEZ • BWE • NBIC 1 ¡

9/25/14 ¡ U.S. Ballast Water Management Policy 2004: ¡USCG ¡ Mandatory BWM reporting • Mandatory BWM • Exemptions: • Crude oil tankers involved in coastwise trade • Traveling within one Captain of the Port Zone • DOD & USCG vessels 2008: ¡EPA ¡ • Vessel General Permit – Effective February 6, 2009 in AK • Regulated Pacific nearshore voyages • Mandatory management & record keeping for crude oil tankers involved in coastwise trade Valdez & Prince William Sound 2005 – 2012 • 18 crude oil tankers – Valdez: 17 – PWS: 7 • 54,642,270 MT of ballast water – Valdez: 52,805,080 MT – PWS: 1,837,190 MT • 97% coastwise ballast • 28% managed h)p://invasions.si.edu/nbic/managementpract.html ¡ 2 ¡

9/25/14 ¡ Valdez: Reported Type of Ballast Discharge 12,000,000 Unknown Overseas 10,000,000 Ballast Volume (MT) Coastwise 97% ¡ 97% ¡ 98% ¡ 98% ¡ 8,000,000 6,000,000 4,000,000 2,000,000 91% ¡ 93% ¡ 99% ¡ 92% ¡ 0 2005 2006 2007 2008 2009 2010 2011 2012 3 ¡

9/25/14 ¡ Valdez: Reported Management of Ballast Discharge 8,000,000 71% ¡ Unmanaged 66% ¡ 63% ¡ 7,000,000 Managed - Mid Ocean 61% ¡ Ballast Volume (MT) Managed - Coastal 6,000,000 5,000,000 4,000,000 99% ¡ 97% ¡ 3,000,000 99% ¡ 2,000,000 1,000,000 26% ¡ 16% ¡ 23% ¡ 20% ¡ 87% ¡ 0 2005 2006 2007 2008 2009 2010 2011 2012 4 ¡

9/25/14 ¡ Valdez: Reported Management Method of Ballast Discharge 8,000,000 Unmanaged 7,000,000 Managed - Alternate Ballast Volume (MT) Managed - Empty Refill 6,000,000 Managed - Flow Through 5,000,000 4,000,000 3,000,000 2,000,000 1,000,000 0 2005 2006 2007 2008 2009 2010 2011 2012 5 ¡

9/25/14 ¡ Prince William Sound • Reports of ballast discharged in: – Prince William Sound – PWS Captain of the Port Zone – Knowles Head Anchorage • No reported ballast discharge in 2008 or 2012 • 98.6% coastwise ballast • Increase in post-VGP management rates (0% 44%) 6 ¡

9/25/14 ¡ Thank You 7 ¡