Wetland classification, identification, delineation-2004

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, ' usin� the Nutionul Li.st c�f�Plunt.S'pe�rrc.s 7'hut Oec•ur in W"etluncl.�• - tilinnc�.sota (Reed 1988). ' RESULTS AND D[SCUSSIOi�1 The NWI map (Excelsior Quadrangle) indicates no wetland basins located on the subject property ' (Figure 2). Upon completion of inspection it was determined that Basin l, within the subject property, is a palustrine (P) type wetland exhibiting emergent vegetation (EM) and a seasonally flooded moisture regime (C) or a Type 3 (PEMC) wet(and (Figure 5). Basin 1 is located within a ' Salida coarse sandy loam (Sa) mapped soil type. ' The Soil Survey of�Hennepin Counry, Figure 3, indicates three soil series present on subject property; Anoka loamy fine sand (An), Borrow land (Bo), and Salida coarse sandy loam (Sa). None of the soils within the property are classtfied as a hydric soil (SCS Hydric Soils of the United States). Soil e series descriptions are given in Appendix C. The DNR Protected Waters map of Hennepin County, Figure 4, indicates no protected wetland basins within the subject property. , SER personnel examined the subject property for areas meeting jurisdictional wetland criteria during the site visit and delineated the edge of one basin(Basin 1)as being jurisdictional wetland. Detailed soils, vegetation and hydrology data for this wetland is provided in the data sheets of Appendix A. ' SER personnel delineated Basin 1 in June 2004, based on the presence of hydric soils, hydrophytic vegetation, and wetland hydrology. SER determined Basin 1 to be a PEMC type wetland. The , majority of Basin 1 is dominated by reed canary grass(Phalaris arundinacea,FACW+),toward the east where the basin becomes deeper cattail(Typha sp.)becomes more prominent. The center of the basin (off the subject property) is dominated by open water covered with duckweed (Lemna spp.). ' The periphery of Basin 1 is bordered by box elder(Acer negundo, FACW-)and willow(Salix spp.). Basin 1 is located within a Salida coarse sandy loam and Marsh(Ma)mapped soil unit. Basin 1 is a topographic depression within the parcel. Overland flow from roadside runoff and adjacent uplands , collects in Basin 1. The main factor influencing the wetland edge determination was the transition of dominance between hydrophytic and upland vegetation,the presence of hydric soils,and topography. ' SER staff observed sedimentation debris near the western wetland edge of Basin 1. A trench had been dug to install drainage tile adjacent to the home. During a recent precipitation event heavy ' rains eroded soil from the ditch and deposited the soil adjacent to Basin 1 (See Photo Log). Locally, the month of May has been excessively wet, heavy rains have blanketed the area on numerous occasions. According to the Minneapolis WSFP AP Weather Station, the month of May received ' 6.26 inches of precipitation, 3.03 inches greater than the 30-year average of 3.24 inches. Precipitation in the month of June is currently at 2.96 inches of precipitation, 1.09 inches greater than the 30-year average of 1.87 inches. IRECOMMENDATIONS While the wetland boundary that SER has delineated is not official until approved by a WCA ' approved local government unit(LGU), SER advises the property owner to refrain from any filling, draining,or excavating, or any impact to the area SER has delineated as wetland. Depending on the location of the property, buffers around the wetland may also be protected. Any activities in the ' proximity of the wetland should be cleared with appropriate WCA regulatory agencies. It is also '