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• times the drill seeding rate for the permanent seed mix used. Hydroseeding will be completed as one <br />separate pass followed by a second pass to apply mulch and tackfier. Immediately after completion of <br />hydroseeding, the area will be hydromulched with 2,000 pounds per aue of virgin wood fibre mulch and 100 <br />pounds per acre of an organic tacking agent. The tacking agent should be psyllium based and water <br />insoluble upon drying. Seedbeds comprised of plant growth medium or parent material may require fertilizer <br />applications. Any fertilizer applications will be based on fertility analysis as discussed in Tab 9, Attachment <br />9-4. Normally, replaced Topsoil materials have adequate fertility and thus fertilization is not practiced. <br />Shrub and tree seedlings will be planted primarily using hand planting methods. Hand planting improves <br />opportunities for seedlings to be placed in available miaosites and allows planting where site conditions <br />would restrict larger mechanical planting equipment. Hand planting equipment includes planting hoes, <br />spades, and bars, or portable planfing augers. Mechanical seedling planting will be considered as an <br />optional planting method on sites which are not excessively steep or rocky. Mechanical seedling planting <br />will be conducted on the contour. Planting of shrub and tree seedlings will be conducted primarily in the fall <br />as dormant plantings. Spring dormant plantings may be conducted if conditions permit. <br />Surface Stabilization Measures. The planting of a cover crop will be the prindpal means of surface <br />• stabilization during initial establishment of the perennial vegetative cover. Straw mulch may be used in lieu <br />of a cover crop. Whenever mulch is used, the application rate will be approximately one ton per acre. The <br />straw will be anchored by mechanical crimping or tacked with one of the various tackifying compounds <br />available. Mechanipl crimping operations will be done on the contour whenever possible. Only dean grain <br />straw that is free of noxious or problem weeds will be used. Hydromulching has been discussed previously. <br />Reseeding of Previously Seeded Areas. All seeded areas will be periotlicelly monitored for success of <br />perennial vegetation establishment. Soil Conservation Service (SCS) technical guides recommend that a <br />minimum of two years should be allowed before dedaring a stand a failure. The heavy annual weed growth <br />during the first, and sometimes second year, make it somewhat difficult to determine the level of vegetation <br />success (i.e., adequate establishment of perennial vegetation). At any rete, redamation experience at the <br />Seneca 11 Mine shows that an initial heavy weed growth indicates good site characteristics and adequate <br />moisture for establishment and development of the perennial vegetation. Monitoring at the Seneca II Mine <br />shows adequate perennial vegetation cover is often well established by the second or third growing season, <br />indicating that the perennial spectes were present prior to that point though not obvious. If redaimed areas <br />have a low vegetative cover, including annuals, after the first growing season, the area will be evaluated for <br />perennial spedes density. If the density of perennial species (exduding noxious or problem weeds) is less <br />• than one per square foot in a seeded area, the subject area will be reseeded using the appropriate <br />TR-37 13-23 Revised fM/0.5 <br />