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'Pertains to an area comprised of one fenced concentration area plus one unfenced woody planting area. <br />This unfenced area can be seen on Supplemental Map A (Attachment E) as one of the 2015 woody plant <br />concentration polygons containing samples 3, 4, 6, 27, 30 and 45. As such, the sampling area in 2012 and <br />2014 included both the fenced tall shrub planting area subject to standard Sland part of what is properly <br />regarded as an unfenced concentration area subject to standard P2. These data document the high density <br />of shrubs in these planted areas in 2012 and 2014. Supplemental 2015 data separate the density samples <br />into datasets directly applicable to standards P2 and S 1. Note that the background density data collected <br />in 2012 and 2014 are directly applicable to standard Pl. <br />2 Pertains to areas subject to secondary woody plant density standard S 1 as described above <br />3 Pertains to areas subject to primary woody plant density standard P2 as described above <br />The reviewer should note that the discussion and supporting data tables in the 2012/2014 report <br />of the findings of testing for revegetation success for the Yoast BRB-1 Phase III bond release <br />evaluation (Attachment D — Revegetation Success Supporting Documentation) reference a <br />more conservative 2000 stems per acre standard of comparison for the shrub concentration areas <br />sampled. <br />2012 Woody Plant Density Success Evaluation <br />Woody plant density data are presented in the 2012/2014 report of the findings of testing for <br />revegetation success for the Yoast BRB-1 Phase III bond release area. This is included here as <br />Attachment D — Revegetation Success Supporting Documentation. As can be seen in Table 5, <br />the 437.1 stems per acre observed in the background area greatly exceeds the 180 stems per acre <br />(90 percent of the 200 stems per acre background standard) performance standard. <br />w <br />Statistical testing for 2012 background area data is as follows. <br />Background woody plant density (Standard P 1). Use of a reverse -null t-test of the assertion that <br />the 2012 BRB-1 background woody plant density exceeds 90% of the standard is shown as <br />follows: <br />Y — (0.9• technical standard) <br />tccic = s <br />rte) <br />SL -6 - 19 <br />