Laserfiche WebLink
• 2004. It is felt that this is a sufficiently lazge enough sample size to determine survival rates of <br />these trees and shrubs. <br />Results <br />Field Sampling Dates. All of the data utilized in this evaluation were collected between August <br />8, 2006 and September 8, 2006. At the time of the field sampling, all of the plants were actively <br />growing and it is believed that the sampling was performed close to the period of optimum plant <br />growth, when the plant cover and production were neaz their peak. A total of 98 plant species <br />were identified in the 45 cover transects and 90 shrub density transects sampled in this <br />evaluation. A list of all of the plant species encountered or observed during the field sampling <br />efforts in this evaluation is presented in Table 1, Southfield Mine Plant Species List. <br />Sample Adequacy A statistical analysis of the data collected to characterize the plant cover, <br />production, and shrub density is presented in Table 2, Southfield Mine Sample Adequacy <br />Calculations. This comparison documents that a sufficient number of samples were collected to <br />describe the parameters of total plant cover at the required ninety percent confidence interval. <br />Transect Locations. All of the cover, production and shrub density transects sampled in this <br />evaluation from the different reclamation and reference areas sampled are shown on the enclosed <br />maps. The specific details corresponding to each reclamation area or reference area sampled <br />will be discussed in connection with the discussion pertaining to each site. <br />• VENTO RECLAMATION <br />Cover. The results obtained from the 15 cover transects sampled on this site are found in Table <br />3, Vento Reclamation -Plant Cover. Total plant cover on this site averaged 42.40 percent and <br />litter averaged 33.27 percent (Table 3, Vento Reclamation -Plant Cover.) <br />Perennial grasses dominated the plant cover on this site contributing 28.73 percent of the total <br />cover or 67.56 percent of the total relative cover on this site. Perennial forbs contributed a total <br />of 7.73 percent of the total cover and 18.18 percent of the total relative cover on this site. <br />Annuals and biennials contributed a total of 4.00 percent of the total cover or 9.41 percent of the <br />total relative cover on this site. Shrubs contributed a total of 2.07 percent to the total cover or <br />4.85 percent of the total relative covet on this reclaimed site. <br />Western Wheatgrass was the dominant plant growing on this site, contributing a total of 14.53 <br />percent or the total cover or 34.17 percent of the total relative cover on this site. Cicer <br />Milkvetch, Crested Wheatgrass, Sand Dropseed and Bluebunch Wheatgrass were the other <br />dominants on this site, contributing 10.35, 6.58, 5.33 and 5.02 percent, respectively, of the total <br />relative cover on this area. <br />The final revegetation success standard for plant cover for the aeeas sampled in this evaluation <br />which are called Vento Reclamation are to be determined based upon a weighted average from <br />• <br />