Water Column Wetlands REA Details Appendix I - Draft Plan Released For Restoration of Resources Damaged in 1999 North Coast (Stuyvesant) Oil Spill

Stuyvesant Oil Spill draft DARP for Public Comment 5/17/2004 Appendix I Water Column to Wetlands REA Details INJURY CALCULATION species unknown epipelagic fish shrimp epipelagic anchovy mortality 5 4,600,000 6,000 kg/animal 1 0.0007143 0.0201667 animal-year multiplier 0.8333 0.8333 0.8333 Based on life expectancy of average age individual TOTAL: lost kg-years (discounted) 4 2,738 101 Note: no discounting was used because life expectancy is less than one year 2,843 ecological efficiency 0.0016 0.008 0.008 kg of biomass needed 2,604 342,250 12,625 357,486 CREDIT CALCULATION (projected restoration benefits per square meter) % of Potential Marsh Productivity 0% 5% 10% 15% 20% 25% 30% 35% 40% 45% 50% 55% 60% 60% 60% 60% Annual Production (kg/m2) 0.00 0.26 0.52 0.78 1.04 1.31 1.57 1.83 2.09 2.35 2.61 2.87 3.13 3.13 3.13 3.13 Based on a potential maximum benefit of 5.22 kg/m2 Total: Discounted to 1998 0.00 0.22 0.42 0.62 0.80 0.97 1.13 1.28 1.42 1.55 1.68 1.79 1.89 1.84 1.79 1.73 Discounted at 3% per year 72.4 Year 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 Continues to 2104. Number of sq. meters needed for project would be 357,846/72.4 = 4,938 m2 = 1.2 acres. I-1