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of a wet meadow wetland and oxbow channel wetland equivalent in character to the <br />oxbow channel wetlands disturbed by the project. While additional wetland communities <br />will be created along the shorelines of the post-mining lakes, these communities will <br />develop during the reclamation of the mining operation. <br />The nature of the activities that directly affect regulated waters of the United States and <br />jurisdictional wetlands include excavation and fill withinjurisdictional wetlands. <br />2.0 EXISITING ENVIRONMENTAL CONDITIONS <br />The following description of the existing environmental conditions is excerpted from the <br />July 2000 jurisdictional wetland delineation prepazed by Savage and Savage. This <br />description remains consistent with current environmental conditions at the site in 2003. <br />2.l Topography and Geomorphic Features <br />The most significant topographic features of the properties are the Big Thompson River <br />and associated terraces. The Big Thompson River flows from northwest to southeast <br />across the northeast comer of the Croissant property. Approximately the north half of <br />each of the Croissant and Green properties are within the primary alluvial terrace of the <br />Big Thompson River. A 25-30 foot high slope sepazates the Big Thompson primary <br />alluvial terrace and the terrace above. This slope begins along the south edge of the <br />Croissant property and winds through the Green property to County Road 13. The upper <br />terrace comprising the south half of the Green property is comprised of outwash deposits <br />from the Front Range as well as aeolian deposits. <br />The primary alluvial terrace within the Croissant and Green properties contains relict <br />meanders of the Big Thompson River that exhibit distinct topography and vegetation. <br />The Green property contains three man-made farm ponds, two adjacent to the residence <br />on the west side of the property and one along the slope near the east boundary of the <br />property. Several imgation and drainage ditches have been excavated on the Croissant <br />and Green properties. <br />2.? Vegetation <br />Natural vegetation communities within the properties can be broadly categorized as <br />sedge/rush swales; wet meadow, and mixed grassland. The communities form a mosaic <br />within the property and intergrade together depending on microtopography, soils, and the <br />ambient hydrologic regime. Each community is briefly described below. <br />Sedge/rush Swale vegetation communities aze found within both properties surveyed. <br />Sedge/rush Swale vegetation communities aze found in depressions formed by historic <br />alluvial deposition and meandering of the Big Thompson River on both properties and <br />within surface water drainages formed by irrigation tailwater. On both properties <br />sedge/rush swales are also located on the slope between the primary alluvial terrace and <br />secondary terrace. These communities are generally restricted to topographic <br />Grecn & Croissant Aggregate Mining <br />Loveland Ready Mix Concrete, Inc. Green and Croissant Project Loveland Ready Mix, Inc. et al <br />Wetland Mitigation Plan cotrsFiteNo.zooiaozos <br />Attachment 3 <br />