Wetland Conservation Act Notice of Application/Notice of Decision

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I Environmental Consu[tants Wayne Jacobson, P.S.S., W.D,C., P.W.S.,A.F.S. --------------------------------------------------------------------------------------- 5821 Humboldt Avenue North, Brooklyn Center, MN 55430 (612}842-6619 Cel) ' Email: jacobsonenv@msn.com ' To clarify on some Hennepin Caunty sites, 1. Many of these soils have black or gray parent materials 2. Many of the soils have a high organic matter content 3. The hydric soil margin is typicaily higher than the wetland boundary margin on the site 4. Not all of the obviously wetter soils will be identified by the indicators ' 5. Many of the hydric soils are Mollisols which are classic problem hydric soils in many cases ', Field Indicators of H dric Soils A1 Histosol. Cfassifies as a Histosol (except Folist) or as a Histel(except Folistel). User Notes: In a Histosol, typfcally 16 inches or more of fhe upper 32 inches is organic soil ma#eriai. ' Organic soil materials have organic-carbon contents by weight of 12 to 18 percent or more, depending on the clay content of the soil. These materials include muck(sapric soil material), mucky peat(hemic soil material), and peat(fibric soil material). A2 Histic Epipedon. A histic epipedon underlain by mineral soil material with chroma 2 or less. User Notes: Most histic epipedons are surface horizons 8 inches or more thick of organic soil material. Aquic conditions or artifical drainage is required. A3 Black Histic. A layer of peat, mucky peat, or muck 8 inches or more thick that starts within the upper 6 inches of the soil surface; has hue of 1QYR or yellower, value of 3 or less,and chroma of 1 or less; and is underlain by mineral soil material with chroma of 2 or less. ' User Notes: Unfike indicator A2,this indicator does not require proof of aquic conditions or artifical drainage. A4 Hydrogen Sulfide. A Hydrogen sulfide odor within 12 inches of the soil surface. A5 Stratified Layers. Several stratified layers starting wilhin the upper 6 inches of the soil surface. At least one of the layers has value of 3 or less and chroma of 1 ar less,or it is muck,mucky peaf, or a mucky modified minerai texture. The remaining layers have chroma of 2 or less. For any sandy material ihat constitutes the layer with value of 3 or less and chroma of 1 or less, at least 70 percent of the visible soil particles must be masked with organic soil material, viewed through a 10x or 95x hand lens. �bserved without a hand lens, fhe particles appear to be close to 100 percent masked. User Notes: Use of this indicator may require assistance from a trained soil scientist with local experience. The minimum organic carbon content of at least one layer of this indicator is slightly less than is required for indicator A7. An undisturbed sample must be observed. Individual strata are dominantly less than 1 inch thick. A hand lens is an excellent tool to aid in the identification of this indicator. Many alluvial soils have stratified iayers at greater depths; these soils do not meet the requirements of this indicator. Many alluvial soils have stratified layers at the required depths but do not have chroma of 2 or less; these do not meet the requirements of this indicator. 7he stratified layers occur in any soil texture. Wetland Delineation-Mitigation-Permit�ing-Monitoring-Banking-Functional Analysis-T&E Surveys 4 ' Phase I EnvironmenCal Assessments-EAW's-Soil ID-Soil Analysis&Delineation-Environmental Referrals ' Pond & Lake Weed Control & Fish Stocking-Tree Surveys-Natural Resource Management Plans '