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Sourh Slope~ixrure: This mixture is specifically de~gned for use on the one small <br />south facing slope azea. It is composed of very drought resistant species that can withstand <br />high soil temperatures. Because the south slope where it will be planted is already occupied by <br />limited growth, this should be seeded into the area at a low rate (about 40 live seeds per square <br />foot). It is intended simply to augment what is already there. . <br />East Slope Jnvaded Mixture: There is a distinction between the invading vegetation on <br />the east and north facing slopes. This mixture considers the differences in site characteristics as <br />indicated by the existing vegetation. This mixtwe should have a variable seeding rate. In small <br />areas where the natural invasion has been limited it should be seeded at the full rate of about <br />80 live seeds per square foot. But where natural invasion is high, the seeding rate should be <br />reduced accordingly. Because the seeding will undoubtedly be done by hand, making these <br />adjustments should not be difficult. <br />North Slope Invaded Mixture: This mixture is similar to the previous described mixture, <br />but uses a different species balance to account for different microclimatic conditions. Like the <br />East Slope mixture, this one should have a variable seeding rate that considers what is already <br />present on the site. Of special note are locations where tree invasion has occurred in good <br />numbers. Extreme care should be exercised in seeding those areas as too much growth could <br />- adversely affect the future growth of the trees. Seeding where tree invasion rates are high <br />should be done at a very low rate -probably about 20 to 25 live seeds per square foot. This <br />should be enough to increase protective grass growth without adversely affecting the <br />development of the trees. No adjustments are necessary for areas invaded heavily by shrubs as <br />they are less sensitive to undergrowth density than the conifers. <br />Upper Zone Rehabilitation <br />Most of the Upper Zone rehabilitation will be through simple seeding. Map R-4 shows <br />the azeas where scarification of the surface is needed to allow for better growth of the seed <br />mixture applied in that area. Other than those locations, no additional earth work shvuld be <br />done in the Upper Zone. <br />On the Base Features Map is an area labeled "BR" (broken rock) located in the <br />southwestern corner of the site and at the crest of the quarry. On Map R-2 this is shown as a <br />"Do Not Disturb" location. The broken rock in this area could be pushed back against the edge <br />of the excavation. However, unless equipment was placed on the site with a helicopter, there is <br />no way to reach the site without doing severe damage to excellent invasion growth along the <br />Deer Creek Quarry Rehabilitation June 1994 Page 7 <br />