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HALL IRWIN COMPANIEs1 PAGE 3 <br /> BAILEY PIT -TECHNICAL REvIs10N <br /> SEPTEMBER 23, 199B <br /> We will replace the 500 RO trees, with 250 native willows, <br /> 100 chokecherrys, 100 native plums and 50 native Cotton- <br /> woods. The willow will be planted along the normal water <br /> line on the southeastern sides of the lakes to reduce bank <br /> erosion. The chokecherry and native Plum will be bare root <br /> stock available from the Colorado State Forest Services thru <br /> their seedling tree program. The willow and cottonwoods <br /> will come from cutting obtained on the site. in addition, <br /> we will replace the cottonless Cottonwood with native Cot- <br /> tonwood so all species will be the same. The plan to seed <br /> the current, gooseberry and skunkbush will remain unchanged. <br /> 4 ) NUMBER OF TREES SURVNING - The willow will be planted along the <br /> banks of the lake using stakes similar to those required in <br /> the ACOE 404 permit. The cottonwoods, skunkbush, and cur- <br /> rent will be planted as show on the reclamation map submit- <br /> ted in 1991 . This can be done by enlarging each planting <br /> area by a proportional number. We typically find that the <br /> survival rates for the shrubs average 60 percent and for <br /> cottonwoods 40 percent. The willow if planted correctly and <br /> are not eaten by varmints will average 80%. The table below <br /> shows the number of trees planted under the revised plan, <br /> their survival rate and the number needed to successfully <br /> complete reclamation. In the areas where the clumps of <br /> trees are planted no grass seed will be sown. This will <br /> improve the chances of survival of the woody plants so they <br /> do not have to compete with the grass during the important <br /> early growth stage. <br /> Species Number Survival <br /> Planted Percent Surviving <br /> Cottonwood 350 40.0% 140 <br /> Native Plum 100 60.0% 60 <br /> Chokecherry 100 60.0% 60 <br /> Willow 250 80.0% 200 <br /> Totals 800 460 <br /> 5 ) SEED MIX CHANGE - We are making the proposed grass seed mix <br /> change to better facilitate the requirements in the M.L.R.B. <br /> permit and the ACOE permit. This mix is an adaptation of <br /> the existing mix with an addition of two wetland grasses to <br /> enhance the areas around the lake and river. we reduced the <br /> amount of Western Wheatgrass and removed the Tall Wheatgrass <br /> entirely. This mix will provide approximately 51 seeds per <br />