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�acobson Environmental, PLLC www.jacobsonenvironmental.com Environmental Consultants Wayne 7acobson, P.S.S.,W.D.C., P.W.S.,A.F.S. ------------------------------------------------------------------------------------------------------------ 5821 Humboldt Avenue North, Brookiyn Center, MN 55430 (612) 802-6619 Cell Email: jacobsonenv@msn.com A16 Coast Prairie Redox. A layer starting within 6 inches of the soil surface that is at least 4 inches thick and has a matrix chroma of 3 or less with 2 percent or more distinct or prominent redox concentrations occurring as soft masses and/or pore linings. User Notes: These hydric soils occur mainly on depressional landforms and portions of the intermound landforms on the Lissie Formation. Redox concentrations occur mainly as iron dominated pore linings. Common or many redox concentrations are required. Chroma 3 matrices are allowed because they may be the color of stripped sand grains or because few or common sand-sized reddish chert particles occur and may prevent obtaining chroma 2 or less. S1 Sandy Mucky Mineral. A layer of mucky modified sandy soil material 2 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 5 percent and ranges to as high as 14 percent for sandy soils. The percent required depends on the clay content of the soil; the higher the clay content, the higher the amount of organic carbon required. An example is mucky fine sand, which has at least 5 percent but not more than about 12 percent organic carbon. S3 5 cm Mucky Peat or Peat. A layer of mucky peat or peat 2 inches or more thick with value of 3 or less and chroma of 2 or less, starting within 6 inches of the soil surface, and underlain by sandy soil material. User Notes: Mucky peat(hemic soil material)and peat(fibric soil material) have a minimum organic carbon content of 12 to 18 percent, depending on the content of clay. Organic soil material is called peat if virtually all of the plant remains are sufficiently intact to permit identification of plant remains. Mucky peat is at an intermediate stage of decomposition between peat and highly decomposed muck. To ascertain it mucky peat and/or peat are present, determine the percentage of rubbed fibers. S4 Sandy Gleyed Matrix. A gleyed matrix that occupies 60 percent or more of a layer starting within 6 inches of the soil surface. User Notes: Gley colors are not synonymous with gray colors. They are the colors on the gley color pages in the Munsell color book (Gretag-Macbeth, 2000). They have hue of N, 10Y, SGY, 10GY, 5G, 10G, 56G, 10BG, 56, 106, or 5P6 and value of 4 or more. For this indicator, the gleyed matrix only has to be present within 6 inches of the surface. Soils with gleyed matrices are saturated for periods of a significant duration; as a result, there is no thickness requirement for the layer. S5 Sandy Redox. A layer starting within 6 inches of the soil surface that is at least 4 inches thick and has a matrix with 60 percent or more chroma of 2 or less and 2 percent or more distinct or prominent redox concentrations occurring as soft masses and/or pore linings. User Notes: "DistincY' is defined as readily seen but contrast only moderately with the color to which compared. "ProminenY' is defined as contrasting strongly in color. Redox concentrations include iron and manganese masses (reddish mottles)and pore linings (Vepraskas, 1994). Included within the concept or redox concentrations are iron-manganese bodies occurring as soft masses with diffuse boundaries. Common (2 to less than 20 percent) or many (20 percent or more) redox concentrations are required (USDA, NRCS 2002). If the soil is saturated at the time of sampling, it may be necessary to let it dry to a moist condition for redox features to become visible. This is a very common indicator of hydric soils and is often used to identify the hydric/nonhydric soil boundary in sandy soils. Wetland Delineation-Mitigation-Permitting-Monitoring-Banking-Functional Analysis-T&E Surveys g 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