Wetland Delineation Report-2013 - Laserfiche WebLink

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�acobson Environmental, PLLC www.jacobsonenvironmental.com Environmental Consultants Wayne]acobson, P.S.S.,W.D.C., P.W.S.,A.F.S. ------------------------------------------------------------------------------------------------------------ 5821 Humboldt Avenue No�th, Brooklyn Center, MN 55430 (612)802-6619 Cell Email: jacobsonenv@msn.com S6 Stripped Matrix. A layer starting within 6 inches of the soil surface in which iron-manganese oxides and/or organic matter have been stripped from the matrix and the primary base color of the soil material has been exposed. The stripped areas and translocated oxides and/or organic matter form a faintly contrasting pattern of two or more colors with diffuse boundaries. The stripped zones are 10 percent or more of the volume and are rounded. User Notes: This indicator includes the indicator previously named"polychromatic matrix" as well as the term "streaking". Common or many areas of stripped (unmasked) soil materials are required. The stripped areas are typically 0.5 to 1 inch in size but may be larger or smaller. Commonly, the stripped areas have value of 5 or more and chroma of 1 and/or 2, and the unstripped areas have chroma of 3 and/or 4. The matrix (predominant color) may not have the material with chroma of 3 and/or 4. The mobilization and translocation of oxides and/or organic matter is the important process and should result in splotchy masked and unmasked soil areas. This may be a difficult pattern to recognize and is more evident when a horizontal slice is observed. F1 Loamy Mucky Mineral. A layer of mucky modified loamy or clayey soil material 4 inches or more thick starting within 6 inches of the soil surface. User Notes: "Mucky" is a USDA texture modifier for mineral soils. The content of organic carbon is at least 8 percent but can range to as high as 18 percent. The percentage required depends on the clay content of the soil; the higher the clay content, the higher the content of organic carbon required. An example is mucky sandy loam, which has at least 8 percent organic carbon but not more than about 14 percent. F2 Loamy Gleyed Matrix. A gleyed matrix that occupies 60 percent or more of a layer starting within 12 inches of the soil surface. User Notes: Gley colors are not synonymous with gray colors. They are the colors on the gley color pages of the Munsell color book. They have a hue of N, 10Y, SGY, 10GY, 5G, 10G, 56G, 106G, 5B, 10B, or 5PB and value of 4 or more. The gleyed matrix only has to be present within 12 inches of the soil surface. Soils with gleyed matrices are saturated for periods of a significant duration; as a result, there is no thickness requirement for the layer. F3 Depleted Matrix. A layer that has a depleted matrix with 60 percent or more of chroma 2 or less and that has a minimum thickness of either: a. 2 inches if the 2 inches is entirely within the upper 6 inches of the soil, or b. 6 inches, starting within 10 inches of the soil surface. User Notes: A depleted matrix requires a value of 4 or more and chroma of 2 or less. Redox concentrations, including soft iron-manganese masses and/or pore linings, are required in soils with matrix colors of 4/1, 4/2, or 5/2. A, E, and calcic horizons may have low chromas and high values and may therefore be mistaken for a depleted matrix; however, they are excluded from the concept of depleted matrix unless the soil has common or many distinct or prominent redox concentrations occurring as soft masses or pore linings. The low chroma matrix must be the result of wetness and not a weathering or parent material feature. Wetland Delineation-Mitigation-Permitting-Monitoring-Banking-Functional Analysis-T & E Surveys 7 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