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Jacobson Environmental, PLLC www.jacobsonenvironmental.com Environmental Consultants Wayne Jacobson, P.S.S., W.D.C., P.W.S.,A.F.S. ------------------------------------------------------------------------------------------------------------- 5821 Humboldt Avenue North, Brooklyn Center, MN 55430 (612)802-6619 Cell Email: jacobsonenv@msn.com To clarify on some Hennepin County sites, 1. Many of these soils have black or gray parent materials 2. Many of the soils have a high organic matter content 3. The hydric soil margin is typically higher than the wetland boundary margin on the site 4. Not all of the obviously wetter soils will be identified by the indicators 5. Many of the hydric soils are Mollisols which are classic problem hydric soils in many cases Hydrology The presence of current wetland hydrology was determined through direct observation of free water in the excavated soil pit, saturated soil conditions or soil redoximorphic features. However, the effect of on-or off-site hydrologic alterations may not always fully be accounted for when routine delineation methods are used. Wetland Classification Wetland classifications discussed in the text are set forth in Wetlands and Deepwater Habitats of the United States(FWS/OBS Publication 79/31, Cowardin et al. 1979)and Wetlands of the United States (USFWS Circular 39, Shaw and Fredine, 1971.)Additionally, plant community types as named by Eggers and Reed (1998)are given. Topographic maps, National Wetlands Inventory maps, the Web Soil Survey, Aerial Photographs, and DNR Protected Waters maps were consulted to locate potential wetland habitats. The Routine On-site Determination Method was used on this site. In this method, the following procedures were used: 1) The vegetative community was sampled in all present strata to determine whether 50% of the dominant plant species were hydrophytic using the 50/20 method. 2) Soil pits were dug using a dutch auger to depths of 18"40", noting soil profiles and any hydric soil characteristics. 3) Signs of wetland hydrology were noted and were compared to field criteria such as depth to shallow water table and depth of soil saturation found in the soil pits. Wetland edges were marked with orange numbered pin flags. 4-foot wood lath marked with orange "wetland boundary"flagging tape or flagging tied on vecetation may be used if site conditions warrant. Any wetlands were mapped by others using modem survey methods. At least one sample point transect crosses each delineated wetland edge. These transects consist of an upland sample point, and a wetland sample point. Other sample points may be located in areas which have one or more of the wetland vegetation, soils, or hydrologic characteristics present, or where questionable conditions exist. Sample points are marked with orange pin flags with a pink ribbon tied on them. Sample data sheets are found in Appendix B. Wetland Delineation-Mitigation-Permitting-Monitoring-Banking-Functional Analysis-T& E Surveys 4 Phase I Environmental Assessments-EAW's-Soil ID-Soil Analysis & Delineation-Environmental Referrals Pond &Lake Weed Control & Fish Stocking-Tree Surveys-Natural Resource Management Plans