Laserfiche WebLink
Environmentai Consultants Wayne]acobson, P.S.S.,W.D.C., P.W.S,,A.F.S. <br /> ------------------------------------------------------------------------------------------------------------ <br /> 5821 Humboidt Avenue IVorth, Brooklyn Center, MN 55430 (612) 802-6619 Cell <br /> Email: jacobsonenv@msn.com <br /> A16 Coast Prairie Redox. A layer starting within 6 inches of the soil surface that is at leask 4 incf�es <br /> thick and has a matrix chroma of 3 or less with 2 percent or more distinct or prominent redox <br /> concentrations occurring as soft masses andlor pore linings. ' <br /> User Notes:These hydric soils accur mainly on depressional iandforms and portions of the intermound <br /> landforms on the Lissie Formation. Redox concentrations occur main►y as iron dominated pore linings. ' <br /> Comman or many redox concentrations are required. Chroma 3 matrices are allowed because they may <br /> be the color of stripped sand grains or because few or common sand-sized reddish chert particles occur ' <br /> and may prevent obtaining chroma 2 or less. ' <br /> S1 Sandy Mucky Mineraf. A layer of mucky modified sandy soil materia!2 inches or more thick ', <br /> starting within 6 inches of the soil surface. ' <br /> User Notes: "Mucky"is a USDA texture modifier for mineral soils. The content o#organic carbon is at <br /> least 5 percent and ranges to as high as 14 percent for sandy soils. The percent required depends on the <br /> clay content of the soil; the higher the clay content,the higher the amount of organic carbon required. An <br /> example is mucky fine sand, which has at least 5 percent but not more than about 12 percent organic <br /> carbon. <br /> S3 5 cm Mucky Peat or Peat. A layer of mucky peat or peat 2 inches or more thick with value of 3 <br /> or less and chroma of 2 or less, starting within 6 inches of the soil surface, and underlain by sandy soil <br /> material. <br /> User Notes: Mucky peat(hemic soil material)and peat(fibric soil rnaterial) have a minimum organic <br /> carbon content of 12 to 18 percent, depending on the content of clay. Organic soil material is called peat <br /> if virtually all of the plant remains are sufficiently intact to permit identification of pfant remains. Mucky <br /> peat is at an intermediate stage of decomposition between peat and highEy decomposed muck. To <br /> ascertain if mucky peat and/or peat are present, determine the percentage of rubbed fibers. <br /> S4 Sandy Gleyed Matrix, A gleyed matrix that occupies 60 percent or more of a layer sta�ting <br /> within 6 inches of the soil surface. <br /> User Notes: Gley cofors are not synonymous with gray colors. They are the colors on the gley color <br /> . pages in the Munsell color book(Gretag-Macbeth, 2000). 7hey have hue of N, 10Y, SGY, 10GY, 5G, <br /> 10G, 5BG, 1QBG, 5B, 10B, or 5PB and value of 4 or more. For this indicator,the gleyed matrix only has <br /> to be preseni within 6 inches of the surface. Soils with gleyed matrices are saturated for periads of a <br /> significant duration; as a result,there is no thickness requirement for the layer. <br /> S5 Sandy Redox. A layer starting within 6 inches of the soil surface that is at least 4 inches thicEc <br /> and has a matrix with 60 percent or more�hroma of 2 or less and 2 percent or more distinct or prominent <br /> redox concentrations occurring as soft masses and/or pore linings. <br /> lJser Notes:"Distinct"is defined as readily seen but contrasl only moderately with the color to which <br /> campared. "ProminenY' is defined as contrasting strongly in color. Redox concentrations include iron and <br /> manganese masses(reddish mottles)and pore linings(Vepraskas, 1994). Included within the concept or <br /> redox concentrations are iron-manganese bodies occurring as soft masses with diffuse boundaries. <br /> Common{2 to less than 20 percent}or many(20 percent or more)redox concentrations are requireci <br /> (USDA, NRCS 2002). If the soil is saturated at the time of sampling, it may be necessary to let it dry to a <br /> moist condition for redox features#o become visibfe. This is a very common indicator of hydric soils and <br /> is often used to identify the hydric/nonhydric soii boundary in sandy soils. <br /> Wetland Delineation-Mitigation-Permitting-Monitoring-Banking-Funckional Analysis-T&E Surveys 6 <br /> Phase I Environmental Assessments-EAW's-Soil TD-Soil Analysis &Delineatfon-Environmental Referrals <br /> Pond&Lake Weed Control & Fish Stocking-Tree Surveys-Natural Resource Management Plans <br />