07-11-2005 Council Packet - Laserfiche WebLink

Home Browse Search

EXHIBIT D Plants were identified using standard regional plant keys. Taxonomy was based on the Manual of Vascular Plants of Northeastern United States and Adjacent Canada. Ed. 2 (New York Botanical Garden, 1991). Indicator status of plant species was taken from the National List of Plant Species That Occur in Wetlands: 1988 Minnesota (U.S. Fish & Wildlife Service, 1988). in. RESULTS Review of Soils. NWl. DNR and FSA Information The National Wetiand Inventory Map (NWI) (Excelsior Quadrangle, U.S. Fish & Wildlife Service, 1999) showed one (1) PUBF wetland, one (1) R2UBH wetland, and one (1) large PEMF wetland locat^ within site Iwundaries (Figure 3). The Soil Sturvey of Hetmepin County, Minnesota (Sheets 43 and 51, USDA, 1974) showed the following soil types on the site: Erin loam (En), Glencoe (Gc), Hamel loam (Ha), Kilkenny loam (Kk), Lester loam (Lr), and Marsh (Ma) - Figure 4. Glencoe, Hamel and Marsh arc hydric soils indicative of wetland conditions when undrained. The DNR Prrtiected fVaters Mt^, Hennepin County (Sheet 1 of 4, Minnesota DNR, 1983) indicated DNR Protected Wetland 8S9W on the southern half of the site <^Figure 5). Wetland Detcrmiuationg and Delineations Potential wetlands were ev'*luated in greater detail during field observations on May 27,2004. Four (4) wetlands were identified and delineated on the subject site (Appendix A). Corresponding data forms are included in Appendix B. The following description of the wetlands and surrounding upland reflects field conditions observed at the time of the delineation. At that time, vegetation was actively growing and temperatures were in the 60*s and spring hydrology was assumed normal. Wetiand 1 was a Type 3 (PUBFx/PEMB/A) wetland located within a depression and connecting ditch/swale in the northv/est comer of the site. Dominant vegetation consisted of algae and duckweed with lesser amounts of vtdllow in the center of the wetland depression. E>ominant vegetation along the perimeter of the wetland consisted of needle spikenish and reed canary grass with lesser amounts of creeping Charlie, sedge and buckthorn. Soils observed below the wetland boundary were mapped as Glencoe and were faintly mottled, black clay loam to 24 inches. Soils were saturated at die surface and five water was observed at 4 inches below the soil surfisce. Secondary indicators of wetland hydrology included m{^)ped hydric soil, the FAC- Neutral Test and topogranhic position. Adjacent upland was mowed lawn dominated by Kentucky bluegrass with lesser amounts of creeping Chaiiie, dandelion and yellow nutsedge. Upland soils were mapped as Glencoe and were black clay loam to 18 inches, underlain by very dark gray clay loam to 24-f indies. Free water was obs^ed at 14 inches below the soil surface. Mapped hydric sml was the only secondary indicator of hydrology observed. mimiS i