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also be inundated to become part of a reservoir. MITIGATION PLAN T o^ c-e~ ~'-c?m„ Disturbed and Mitigated Wetlands Consttuctio ctiatents developed for the mitigation sites will include typical sections and site plans. A v etailed Wetland Mitigation Plan will be submitted to the Denver Regulatory Office for review and acceptance 000. 7 ~. . Mitigation Site Description All wetland areas impacted will be mitigated on siteaa..»-a~iv~h~ Phase One is located just south of 104's Avenue and just east of the South Platte River. T1tis~-pttas"e of mitigation will be completed during the first year of the project and will include 6.86 acres of wetland creation (Drawing 3). In order to provide wetland hydrology, the topsoil of the azea will be removed and the area will be excavated just below the water table. Once the proper depth is reached, the topsoil will be replaced to bring the soil surface to the water table and the azea will be planted and monitored. rl-:~~~~-mac: ,v. ~ ~ ;G: ~-=t;~e>,+` _~hase-"Pwo of the mitigation plan is located just north of 100'" Avenue and east of the South Platte River and will be a remnant of the excavation of Area Two (Drawing 3). The site will begin as an open water area 30 feet deep and encompassing approximately 19.85 acres. Over five ears, CAMAS will table The point source of the fine particulate fill will then be relocated to the north each year for years six through ten. Startin¢ year six apnroximately 20°/ of the onen water area will be filled each year until ro~ec At yeaz ten, the entire 19.85 acres of open water azea will have been filled, planted with wetland plants and properly monitored as indicated in the Special Conditions of the permit. Most excavated upland areas will be replaced by reservoirs and designated as conservation areas. All Wetland Mitigation areas for this project will be protected by being placed in a conservation easement. Mitigation Plan Detail " Both phases of wetland mitigation are designed to replace disturbed wet meadow and seep areas. The plan establishes giridelines_for providing a suitable soil medium, establishment of well-rooted plant materials and adequate hydrologic support'for each-specifc wetland habitat (Table 4). ___ :..- Planting will occur within the growing season (May through August). All plant material will be placed in 6 to 8 inches of topsoil. Where planting areas abut to open water, topsoil will be underlain by 10 to IZ inches of compacted sub-grade or structural fill. Vegetation Dominant species to be planted are willow, sedges, rushes, hydric amasses and emergents (Table 3). Planting will be accomplished in groupings that accomplish required densities equal to individual plants on specified centers, as follows: ? herbaceous plants-l.d OC (on center) small shrubs-~-6' OC lam- . large shrubs-6-10' OC seeding at 25 ;~/acre PLS ~~ • • • 5.