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~ECLnI~AT:G"d ?L:,,'d <br />it is not, blowing dust will become a severe problem and could obscure visibility <br />• on the Interstate resulting in possible hazards. This is not to mention the air <br />pollution caused by blowing dust on even moderately windy days. <br />Revegetation of this site will not be easy or quick. The site is dry, the <br />precipitation unreliable, and the soils ill suited for easy revegetation. The use <br />of fast growing and drought resistant species is essential to the control of wind <br />erosion, which is the greatest erosional hazard on this site. <br />Planting will only occur between late autumn and early spring. Any other <br />time is fraught with severe risk of failure, especially in the summer (between May <br />15 and November 15). Seeding will be done by drilling or broadcasting. If <br />drilled, a standard field drill or, if the surface is rather stony, a rangeland <br />drill will be used. However, the hairy seeds in the mixture will make it <br />difficult to drill effectively and uniformly due to clogging of the machinery. If <br />• the area to be seeded is less than 5 to 10 acres (expected to be the usual case), <br /> then broadcasting would be a more effective means of seeding, although twice as <br />much seed is needed and the surface must be prepared somewhat differently. <br />One of the most effective methods of seeding used on mines in the Colorado <br />Springs area is to broadcast the seed within a few days after spreading the soil <br />and then drag the soil with a chain rake behind a lightweight vehicle. This can <br />be just as effective as drilling, far less costly, and produces a natural looking <br />vegetation rather early in the revegetation process. The disadvantage of the <br />method is that it requires careful timing in topsoil replacement, seed delivery, <br />and planting. <br />In all probability, a number of different methods will be used to plant those <br />areas where planting will be required. Each method is adaptable to the conditions <br />at hand. For example, in a dry year drill seeding may be used so as to achieve <br />• page 7 of 10 Exhibit E <br />