Wetland Delineation Report-2013 - Laserfiche WebLink

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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 F6 Redox Dark Surface. A layer that is at least 4 inches thick, is entirely within the the upper 12 inches of the mineral soil, and has: a. matrix value of 3 or less and chroma 1 or less and 2 percent or more distinct or prominent redox concentrations occurring as soft masses or pore linings, or b. matrix value of 3 or less and chroma of 2 or less and 5 percent or more distinct or prominent redox concentrations occurring as soft masses or pore linings. User Notes: This is a very common indicator used to delineate wetland soils that have a dark surface layer. Redox concentrations in mineral soils with a high content of organic matter and a dark surface layer commonly are small and difficult to see. The organic matter masks some or all of the concentrations that may be present. Careful examination is required to see what are commonly brownish redox concentrations in the darkened materials. If the soil is saturated at the time of sampling, it may be necessary to let it dry to at least a moist condition for redox features to become visible. Soils that are wet because of ponding or have a shallow, perched layer of saturation may have any color below the dark surface. It is recommended that delineators evaluate the hydrologic source and examine and describe the layer below the dark colored epipedon when applying this indicator. F7 Depleted Dark Surface. Redox depletions with value of 5 or more and chroma of 2 or less in a layer that is at least A inches thick, is entirely within the upper 12 inches of the mineral soil and has: a. matrix value of 3 or less and chroma of 1 or less and 10 percent or more redox depletions, or b. matrix value of 3 or less and chroma of 2 or less and 20 percent or more redox depletions. User Notes: Care should be taken not to mistake mixing of an E or calcic horizon into the surface layer for depletions. The"pieces"of E and calcic horizons are not redox depletions. Knowledge of local conditions is required in areas where E and/or calcic horizons may be present. In soils that are wet because of subsurface saturation, the layer directly below the dark surface layer should have a depleted or gleyed matrix. Redox depletions should have associated microsite redox concentrations that occur as Iron pore linings or masses within the depletion(s)or surrounding the depletion(s). F8 Redox Depressions. In closed depressions subject to ponding, 5 percent or more distinct or prominent redox concentrations occurring as soft masses or pore linings in a layer that is 2 inches or more thick and is entirely within the upper 6 inches of the soil. User Notes: This indicator occurs on depressional landforms, such as vernal pools, playa lakes, rainwater basins, "Grady" ponds, and potholes. It does not occur in 3 foot wide microdepressions on corivex or plane landscapes. We have reviewed the report for vegetative species at the boundary and data sheets for hydric soil indicators and we have revised selected wetland boundary areas which were staked with flags and orange wetland boundary flagging, they are shown on the final map as red lines. Wetland Delineation-Mitigation-Permitting-Monitoring-Banking-Functional Analysis-T & E Surveys $ 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