Wetland Delineation Report-2013 - Laserfiche WebLink

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,Jacobson 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, Brooklyn Center, MN 55430 (612) 802-6619 Cell Email: jacobsonenv@msn.com A10 0.75 inch Muck. A layer of sapric muck 0.75 inch or more thick with value 3 or less and chroma 1 or less, starting within 6 inches of the soil surface. User Notes: this indicator requires a minimum muck thickness of 0.75 inch. Normally, this expression of anaerobiosis is at the soil surface; however, it may occur at any depth within 6 inches. Muck is sapric soil material with a minimum content of organic carbon that ranges from 12 to 18 percent, depending on the content of clay. Organic soil material is called muck if virtually all of the material has undergone sufficient decomposition to limit the recognition of the plant parts. Hemic and Fibric soil material do not qualify. Generally, the sapric muck is black and has a"greasy" feel; sand grains should not be evident. A11 Depleted below dark surface. A layer with a depleted or gleyed matrix that has 60 percent or more chroma of 2 or less, starting within 12 inches of the soil surface, and having a minimum thickness of either: a. 6 inches or b. 2 inches (if the 2 inches consists of fragmental soil material) c. Common in Mollisols—on this wetland site, could be Glencoe or Webster Loamy or clayey layer(s)above the depleted or gleyed matrix must have value of 3 or less and chroma of 2 or less. Any sandy material above the depleted or gleyed matrix must have value of 3 or less and chroma of 1 or less, and, viewed through a 10x or 15x hand lens, at least 70 percent of the visible soil particles must be masked with organic material. Observed without a hand lens, the particles appear to be close to 100 percent masked. User Notes: This indicator often occurs in Mollisols but also applies to soils with umbric epipedons and dark colored ochric epipedons. For soils with dark colored epipedons more than 12 inches thick, use indicator Al2. A depleted matrix requires 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. Al2 Thick Dark Surface. A layer at least 6 inches thick with a depleted or gleyed matrix that has 60 percent or more chroma 2 or less starting below 12 inches of the surface. The layer above the depleted or gleyed matrix must have value of 2.5 or less and chroma of 1 or less to a depth of at least 12 inches and value of 3 or less and chroma of 1 or less in any remaining layers above the depleted or gleyed matrix. In any sandy material above the depleted or gleyed matrix, at least 70 percent of the visible soil particles must be masked with organic material, viewed through a 10x or 15x hand lens. Observed without a hand lens, the particles appear to be close to 100 percent masked. User Notes: This indicator applies to soils that have a black layer 12 inches or more thick and have value of 3 or less and chroma of 1 or less in any remaining layers directly above a depleted or gleyed matrix. This indicator is most often associated with overthickened soils in concave landscape positions. A depleted matrix requires 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. Wetland Delineation-Mitigation-Permitting-Monitoring-Banking-Functional Analysis-T&E Surveys 5 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