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. Item#02-PC Agenda-*02/21/2012 <br /> File#11-3531/Total Pages 1481 <br /> p <br /> i <br /> Area A & B <br /> In buffer arca A the top 3 inches of sod and soil and turf will be removed and wasted for use as till on <br /> non-mitigation areas on the site. These areas will then be top dressed and shaped using the remaining soil. <br /> Coordination Issues <br /> The project manager and contractor must meet on site prior to any excavation detailed in this section. All <br /> areas must he properly staked and identified prior to excavation. Spoil stock pile sites must he agreed to <br /> 111/ before any work is done to maximize efficiency and minimize cross contamination issues. If extensive <br /> root systems remain after initial sod stripping operations, addition soil may have to he stripped from areas <br /> of concern identified by the project manager. <br /> 111 <br /> Erosion Control and Tillage Issues <br /> After the final grade contours have been achieved and approved by the project manager. the site must he <br /> immediately tilled to 6 inches deep to break up clods and eliminate compaction by grading equipment to <br /> assure establishment of a suitable seed bed. Silt fences must be installed in any areas that would be subject <br /> M •to erosion of sediment from the site as well onto the site from upland grading activities. <br /> IV, Seeding Specifications: <br /> a. Timing of Seeding: Due to the small sire of most wetland seed varieties, all seed will he <br /> 1 broadcast. To maximize success, the planting of seed can only occur within two small windows, <br /> April 1 to June 15 or October 15 to December 1. Therefore finish grading should he scheduled <br /> 111 accordingly. Fall dormant planting has some benefits for germination of some species so should <br /> be considered as the first choice. If the grading of the project is done in phases. the timeline for <br /> seeding must he adjusted accordingly. The owner will give the seeding contractor at least two <br /> weeks notice to make sure the necessary seed can he ordered and he on hand. <br /> 111 <br /> 1 h. Seed Mix and Installation Specifications*: Buffer area A will be seeded with BWSR Mix 35- <br /> 621 at 11.0 pounds of pure live seed (PLS) per acre. The Appendix contains the specifications for <br /> the seed mixes specified. Below is a table and summary of seed mixes. <br /> 1 Rate Est. Total Amt. <br /> Seed Mix (1b./ac.) Seed Used (lbs.) <br /> BWSR Mix 35-621 Dry Prairie Southeast 11 TBI) <br /> *Note: Sec"Guidelines for Restoring and Managing Native Wetland Vegetation" for seed mix <br /> 111, percentages and specifications for seed density on a square foot basis. <br /> 2 <br />