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Attachment 41 <br />• <br />Colony's Revegetation activities during 1987 will include permanently <br />reseeding several small areas that have not established a suitable vegetative <br />cover. In addition, we plan to permanently revegetate the areas disturbed as <br />part of the Dam/Plant Access Road work. The remaining Upper Davis Gulch <br />stockpile and other disturbed areas associated with the Upper Davis Gulch <br />Drainage Improvement work will be temporarily revegetated. Disturbed <br />portions of the switchyard fill will also be temporarily revegetated. The <br />seed mixes which we plan to use during 1987 are shown in Attachment 42. <br />During the past several years, Colony has found that we depend on and use <br />five basic revegetation techniques. These same techniques will be used <br />during 1987. The remainder of this section is a description of these <br />techniques and the situations they are used in. <br />Technique 1 <br />This technique is used in steep areas (>2:1) that have suitable access and <br />can be safely traversed by personnel. The area is hydroseeded using <br />200 lbs/acre of wood fiber mulch/tackifier as a seed carrier and visual <br />marker. Fertilizer (18-46-0) is then applied in a separate application at <br />the rate of 400 lbs/acre. Within four days following application of the seed <br />and fertilizer, hay mulch is uniformly spread on the area at the rate of <br />4000 lbs/acre. Polypropylene netting is then stapled over the hay mulch <br />• within ten days after mulch application. <br />Technique 2 <br />This technique is used in steep areas that lack proper access or present a <br />safety hazard to personnel trying to walk on it. Hydroseeding and broadcast <br />seeding are both used. Fertilizer (18-46-0) is also applied. Rather than <br />staple the netting over the hay mulch, the hay is "sandwiched" between two <br />layers of netting. These blankets of hay mulch are then sewn together and <br />then lowered or rolled downward, thereby covering the seed and soil. <br />Technique 3 <br />This technique is used in moderately steep areas (< 2:1) that have good <br />access for hay mulching equipment. Hydroseeding is preferred and done using <br />wood fiber mulch/tackifier as a carrier and marker. Each acre receives <br />400 lbs. of fertilizer. Hay mulch is applied at the rate of 4000 lbs/acre <br />within four days following the seed and fertilizer applications. Within <br />three days after mulching, a wood fiber mulch/tackifier mixture is sprayed on <br />the hay mulch at the rate of 700 lbs/acre, <br />• <br />