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2005 Edna Mine Vegetation Sampling Report <br />4. Moffat BRU: Topsoiled <br />The Moffat BRU: Topsoiled encompasses approximately 215 acres. The pre-disturbance <br />vegetation communities were 83% snowberry/sage and 17% oak mountain shrub. <br />Sample adequacy for vegetation cover was obtained in this unit with 20 transects. <br />Mean herbaceous vegetation cover was 47.3%. This is significantly higher than the <br />mean for the reference area (24.1%). Thus, the Moffat BRU: Topsoil exceeds the liability <br />release standard for herbaceous cover. See Tables 4-4 and 4-5 for absolute and relative <br />cover data for this unit. <br />Sample adequacy for production was obtained in this unit with 40 transects. Mean <br />herbaceous production was 160.9 g/m2 or 1435.2 Ibs/ac (Table 4-6). This is significantly <br />higher than the mean for the reference area of 80.2 g/m2. Thus,' the Moffat BRU: <br />Topsoiled exceeds the liability release standard for herbaceous production. <br />As shown on Table 4-3, there were six plant species with a minimum of 3% and <br />maximum of 40% relative cover present in this unit. Because more th five species <br />were present, the combined relative importance requirement is automat' ally satisfied. <br />Thus, the Moffat BRU: Topsoiled meets the liability release requiremef r diversity. <br />9. 5 shrubs p rcre. This <br />The mean shrub density in the Moffat BRU: Topsoiled was 2,111, <br />exceeds the required minimum density of 1,000 shrubs p> jacre. Sample gelation <br />adequacy for shrub density was not obtained with 40 tra,%ddts in this',BRU. However, as <br />outlined in the sampling plan, it is assumed that the central I it t? ?m applies and the <br />mean density was established. The high variance in d; i? reflects the "patchy" <br />distribution of shrubs within this BRU. See Table 47-for shrubde_ ssriEl data for this unit. <br />4.1. Supporting Doc <br />Tables 4-1 through 4-8 summarize <br />BRU: Topsoiled. -Table 4-9 provid( <br />this BRU. Figure 4-1 is a site photo4 <br />statistical tests for the Moffat <br />nity plant species sampled at <br />the transect location map. <br />The following tables and figures ver <br />liability release requirements <br />the-West Ridge BRU: Topsoiled meets <br />Habitat Management, Inc. 25