ARCHIVED REPORTS_YEAR SIX (2013) PHYTOREMEDIATION TREE MONITORING REPORT

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SECTION 4:TREE MONITORING RESULTS TABLE 4-1 Tree Survivorship by Monitoring Year Year 1 (2007) Year 2(2008) Year 3(2009) Year 4(2010) Year 5(2011) Year 6(2012) Planting Percent Percent Percent Percent Percent Percent Site Survivorship Survivorship Survivorship Survivorship Survivorship Survivorship Average Percent Survivorship (All Sites) 90%d 90%d 91%d 93% 91%d 92% NOTES: aln planting areas Addition to Area A and Area A,trees that were damaged in the 2009 windstorm and counted as dead in Year 3(2009)re-sprouted from the rootstock in Year 4(2010),forming new growth.These re-sprouts were counted as live trees during Year 4(2010)monitoring,and this resulted in increases in survivorship between Year 3(2009)and Year 4(2010). bin 2011,a fire adjacent to Whiskey Slough Road singed a few trees in planting Area A and Addition to Area A, but only two trees were conservatively recorded as dead during the Year 5(2011)monitoring.The fire also burned the lower tree branches of a few other trees located next to the road.Growth in the upper part of one of these trees was observed in 2012 and the tree was therefore not recorded as dead. limited tree replanting was conducted in 2007 and 2008. Replanting caused survivorship averages in some parts of the site to increase between Years 1 through 3. °The average Year 2(2008)survivorship rate is 89.6 percent(rounded in Table 4-1 and Appendix A to 90 percent).This is essentially the same as observed in Year 1 (2007).The overall survivorship rate in 2007 was 89.5 percent. In Year 3(2009) and Year 5(2011),the average survivorship scores were similarly rounded to 91 percent. TABLE 4-2 Health And Vigor By Monitoring Year Year 1 (2007) Year 2(2008) Year 3(2009) Year 4(2010) Year 5(2011) Year 6(2012) Planting Health and Health and Health and Health and Health and Health and , Site Vigor Score Vigor Score Vigor Score Vigor Score Vigor Score Vigor Score Area A 2.6 2.4 2.5 2.5 2.1 2.4 Addition to 2.2 2.4 2.5 2.3 2.0 2.2 Area A Area AA 2.2 2.2 2.4 2.4 2.3 2.5 Area B 1.8 1.6 2.3 2.4 2.4 2.6 Area Ca 1.6 1.3 1.9 2.2 1.9 1.9 Area Da 1.5 1.4 1.7 1.6 1.7 1.8 Average Health and Vigor Score (All Sites) 1.9b 1.9b 2.2` 2.2` 2.1 2.2` NOTES: aSubsequent to annual tree monitoring,tree replanting in Areas C and D was performed in late-November 2008.Survivorship in these areas was assessed in Year 3(2009)and Year 4(2010). bDue to rounding,scores for both 2007 and 2008 are 1.9.The average health and vigor score in 2007 was 1.94;the average health and vigor score in 2008 was 1.90. `Due to rounding,the average site vigor scores for 2009,2010,and 2012 are 2.2.The average health and vigor score for the site in 2009 was 2.23;the average health and vigor score in 2010 was 2.22;the average health and vigor score in 2012 was 2.24. Vigor Ranks: (3)-high vigor score (2)-medium vigor score (1)-low vigor score (0)-tree dead 4-2