Laserfiche WebLink
' <br /> ' of h dric soils and wetland h drolo also occur the rea has wetl n °° <br /> Y y gy , a a d vegetation. In more <br /> standard terms, some plants are more adapted to growing within inundated or saturated soil. <br /> ' Based on literature records and professional experience, a panel of expeRs compiled a list of <br /> plant species and assigned each a hydrophytic status (described below and includes five major <br /> , classes of probability of a plant occurring within a wetland). <br /> In terms of delineation there is a gradient of plant species that are adapted to "growing in water <br /> � or on substrate that is at least periodically deficient of oxygen". Fieldwork associated with <br /> wetland delineations includes a procedure (the 50/20 Rule, for determination of dominance), <br /> which is also outlined in the 1987 Manual, by which to determine if hydrophytic plant species <br /> ' dominate the vegetation at a given location. This procedure has been used for the wetland <br /> delineation at the subject parcel of this report. <br /> Hydric Soil <br /> ' Defined in the 1987 Manual as "A soil that is saturated, flooded, or ponded long enough during <br /> the growing season to develop anaerobic conditions that favor,the growth and regeneration of <br /> ' hydrophytic vegetation. Hydric soils that occur in areas having positive indicators of <br /> hydrophytic vegetation and wetland hydrology are wetland soils." <br /> , For the purposes of delineation of wetlands, soils cannot be viewed without digging pits or <br /> extracting soil using an auger. Therefore, transects of soil samples are taken from perceived <br /> upland to perceived wetlands along a transitional boundary. There are specific color indicators, <br /> ' textures, and depth requirements in the soil that are reviewed in order to determine whether <br /> hydric soils occur at a given point or not. After a transect of soil samples has been taken, upon <br /> consideration of vegetation and indicators of appropriate hydrology a working prototype for the <br /> ' given wetland is developed by the delineator. The wetland delineator then uses this working <br /> prototype to complete the location of the remainder of the wetland boundary, unless the wetland <br /> is large enough or the landscape features (vegetation or topography) change enough to wanant <br /> ' additional transect samples. <br /> METHODS <br /> , The methods used to delineate the subject parcel are as described in the 1987 Manual, under the <br /> "routine" methods for sites greater than 5 acres. This methodology is followed in order to assess <br /> � whether the three parameters of a wetland are met for areas on the subject parcel. The three <br /> parameters required under normal circumstances in order to delineate a wetland are described <br /> below. <br /> ' The National Wetland Inventory (NW� maps (Figure 2), Soil Survey of Hennepin Counry maps <br /> (Figure 3), and 2004 aerial photographs were reviewed prior to the site visit to identify areas that <br /> ' may be wetlands. Areas illustrating evidence of wetland conditions were examined in greater <br /> detail during the field survey. Vegetation, soils and hydrology were examined (as outlined in the <br /> 1987 Manual) and used to characterize wetland types and determine wetland boundaries. Sample <br /> ' transects were established in representative wetland-to-upland transition zones in order to <br /> characterize the vegetation, soils, and hydrology of the site. Transects consisted of representative <br /> upland sample point(s) and representative wetland sample point(s). Information obtained from <br /> ' the sample points can be found on the field data sheets located in Appendix A. <br /> Svoboda Ecological Resources 8 2180 Abingdon Way <br /> Project No.2007-056-03 Orono,Minnesota <br /> 1 <br />