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I <br /> item#02-PC Agenda- '02/21/2012 <br /> File#11-3531[Total Pages 148] <br /> S <br /> S <br /> i <br /> • c. Site Preparation and Seeding Technique: The site will he re-tilled as needed to break up any <br /> 110 large clods left from the earth moving phase of the project, except where wet conditions preclude <br /> 11/ tillage. All seed will be broadcast using various broadcast spreading techniques. Where wet soils <br /> exist, hand operated broadcasters will be used. Small seed (generally containing more than <br /> 100,000 seeds per ounce) will be segregated, matched to suitable sites. mixed with sand and hand <br /> spread to maximize dispersion in their suitable hydrologic habitats. The upland buffer areas will <br /> he dragged after the seed is broadcast as needed to achieve proper seed to soil contact. Straw <br /> mulch will he applied at 1.5 tons per acre and disk anchored where possible. On any slopes in the <br /> 110 huller area exceeding a 10 percent slope. straw erosion blanket will be installed after seeding. <br /> S <br /> ., Installation Note I: Seed will he custom ordered. Certain seed mix components will he bagged <br /> separately to allow special hand installation due to size and habitat requirement considerations. <br /> S <br /> . V. Prevention of Introduction of Invasive Species: It is important that any topsoil that is placed on <br /> . the site he free of'any rhizomes and seed from vegetation that is undesirable in a wetland. Therefore it is <br /> imperative that the coordination between the grading contractor and the project manager is adhered to <br /> carefully as specified earlier in this Appendix. Also, any mulch used should free of weed seed. Certified <br /> Weed Free Mulch. grain straw,and wood fiber mulch is acceptable. Under no circumstances may hay. <br /> wild hay. alfalfa. or marsh hay be used as mulch. <br /> Vt. Aftercare/ Invasive Species Management: It is critical to any restoration project to provide <br /> monitoring and aftercare for several seasons until the late successional species are established. Aftercare <br /> will include spot spraying two times during the first growing season (June. August), two times during each <br /> year(June and late August) for years 2 and 3,and once a year in years 4 and 5. Target species of the <br /> spraying program include, but are not limited to, Canada -Thistle. Reed Canary Grass, Smooth Biome. and <br /> ! Stinging Nettle. Spot mowing and inter-seeding will he done as necessary,as determined by monitoring. <br /> . l'or example, if the selected nurse crop establishes better than expected, the entire site would need to be <br /> mowed to about 8- to 12" to prevent setting of seed. Mowing of the nurse crop must he done carefully to <br /> avoid clumped cut material from impeding the growth of slower growing native species. Further. if the <br /> . construction schedule results in the need to plant the temporary mixes, any undesirable species that start to <br /> establish themselves will he controlled before they set seed. <br /> s <br /> p <br /> s <br /> r <br /> R <br /> e <br /> I <br /> I <br /> I <br /> i <br /> 0 <br /> 3 <br /> •I <br />