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HomeMy WebLinkAboutWetland Delineation Report I I I I I I I I I I I I I I I I I I I Ron L. Dixon Natural Resource Consulting, Inc. 7719 Knapp Road · Indianapolis, IN 46259 Tel.: (317) 862-7446 · Fax (317) 862-7437 March 4, 2001 Jim Caito Jim Caito Builders P.O. Box 553 Carmel, Indiana 46082-0553 Dear Mr. Caito: This is a report regarding a detailed wetlands delineation I did of the plants, hydrology, and soil conditions located in a small woodland near the northwest portion of the proposed Windsor Grove subdivision in Hamilton County, Indiana. I had previously looked at this site during a preliminary wetlands assessment under dry conditions, and felt that the woods did contain a small area of wetland in the northwest portion. During the more detailed delineation done late this winter, I observed the site under wetter conditions a few days after a heavy rain. I found the wetland area to still be located primarily in the northwest corner of the woods where a small creek channel leaves its banks during heavy precipitation. I would estimate the size of this wetland to be one-fourth to one-third of an acre in size. I have flagged the wetland boundaries, and I believe that a survey crew from your engineers (stoeppelwerth & Associates) intends to survey it and plot its location on a developmental plan. It appears that the overall impact (filling and dredging) to this wetland is likely to be less than one-tenth of an acre. If that is the case, then we will need to notify the Indiana Department of Environmental Management with a one-page form to satisfy the necessary requirements for an IDEM 401 water quality certification permit. Usually no mitigation is required when the impact to the wetland is less than one-tenth of an acre. A recent Supreme Court ruling regarding isolated wetlands has resulted in questions of whether certain wetlands are jurisdictional. The small wetland area at Windsor Grove is not adjacent to a blue-line stream channel, but the small tributary, an intermittent creek channel associated with this wetland, may keep it from being an isolated wetland. The National Wetlands Inventory (NWI) map does not indicate any wetlands on the Windsor Grove site; however, the NWI map is not conclusive. The United states Army Corps of Engineers is the agency that will determine whether this wetland is jurisdictional under current law. However, they may not be able to make a decision at the Louisville Corps of Enginers district office until they receive further direction from Washington, D.C. I 1 1 1 1 1 1 1 1 1/ 1 1 1 1 I I I I I Key To Wetland Soil Evaluation DRAINAGB CLASS P D = Poorly Drained S P D = Somewhat Poorly Drained V P D = Very Poorly Drained W D = Well Drained SOIL HORIZON 0 = Organic Litter A = Topsoil B = Subsoil C = Parent Material (Glacial Till, Gravel, Sand, Rock) SOIL COLOR Based upon Munsell Color Charts Mottle Abundance & Contrast Abundance: F = Few C = Common M = Many Contrast: F = Faint D = Distinct P = Prominent USDA TEXTURE gr = gravel sc = sandy clay cos = coarse sand sil = silt loam ms = medium sand sicl = silty clay loam fs = fine sand cl = clay loam vfs = very fine sand sic = silty clay fsl = fine sandy loam 1 ': loam 51 = sandy loam c = clay 1s = loamy sand r = rock 5cl = sandy clay loam 0 = organic (muck) Concretions STRUCTURE Indicates the presence of Iron (Fe) or Manganese (Mn) coatings Grade = weak Grade 2 = moderate Shape gr = granular bk = blocky pI platy m = massive sg = single grained x = fragipan Ron L. Dixon Natural Resouree Consulting, Ine.