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HomeMy WebLinkAboutWetlands Delineation WETLAND DELINEATION FOR THE PROPERTY LOCATED AT: 245 NORWICH NEW LONDON TURNPIKE (CT ROUTE 32) UNCASVILLE, CONNECTICUT REPORT PREPARED BY: ALEKSANDRA MOCH SOIL & WETLAND SCIENTIST CERTIFIED PROFESSIONAL IN EROSION AND SEDIMENT CONTROL GEOLOGIST/HYDROGEOLOGIST February 12, 2022 Aleksandra Moch, 44 Lewelyn Road, Stamford, CT 06902 tel/fax : (203) 975-7834, cell: (203) 550 9373, aleksandra_moch@yahoo.com Page 2 SITE DESCRIPTION The property is located on the eastern side of Norwich New London Turnpike (CT ROUTE 32) in Uncasville, CT. This 1.87-acre site supports a single-family residence with a detached garage and a driveway. The area slopes towards the east. The eastern part is developed and maintained as a lawn while the western portion is wooded. METHODS Wetland identification was performed on February 12, 2022. This site was evaluated in terms of the presence of poorly drained, very poorly drained, alluvial, and/or floodplain soils and submerged land. The soil types were identified by observation of soil morphology including soil texture, structure, color, etc. Numerous soil samples were taken using an auger. Sampling began within the typical wetland area and continued toward the upland. Soil morphology was observed at soil sampling points along the transect lines perpendicular to the wetland boundary. At each transect, the boundary between the upland and wetland was marked with yellow surveyor’s tape labeled “WET”. Each flag was numbered sequentially 1A-8 along the eastern edge of an off-site wetland located along the western property nine. WETLANDS/WATERCOURSES REGULATORY DEFINITION The Inland Wetlands and Watercourses Act (Connecticut General Statues section 22a-38) defines inland wetlands as land, including submerged land…which consists of any soil types designated as poorly drained, very poorly drained, alluvial, and floodplain. The terms poorly drained and very poorly drained describes the drainage classes of the soil, which are based on frequency and duration of periods of soil saturation due to the fluctuations of ground water table. The terms alluvial and floodplain describe the processes in which the soils were formed. Watercourses are defined in the statues as rivers, streams, brooks, waterways, lakes, ponds, marshes, swamps, bogs and all other bodies of water, natural or artificial, vernal or intermittent, public or private, which are contained within, flow through or border upon the state or any portion thereof. Intermittent watercourse: is determined by a defined permanent channel and bank and the occurrence of two or more of the following characteristics: • Evidence of scour or deposits of recent alluvium or detritus, • Presence of standing or flowing water for a duration longer than a particular storm incident, and • Presence of hydrophytic vegetation. Aleksandra Moch, 44 Lewelyn Road, Stamford, CT 06902 tel/fax : (203) 975-7834, cell: (203) 550 9373, aleksandra_moch@yahoo.com Page 3 WETLAND/WATERCOURSE DESCRIPTION The area flagged in the field consist of a large wetland complex located off-site along the western property line. The wetland area is flooded during the wet season and supports marsh vegetation within the flooded area and woodland along the edges. WETLAND SOILS The soils were classified using soil criteria and maps developed by United States Department of Agriculture, Natural Resources Conservation Service. 18 – Catden and Freetown soils The Catden series consists of very deep, very poorly drained soils formed in woody and herbaceous organic materials in depressions on lake plains, outwash plains, moraines, and flood plains. These soils formed in woody and herbaceous organic materials. Slope ranges from 0 to 2 percent. The entire soil profile consists of muck that extends to a depth of 51 inches or more. The Catden soils have a surface layer dominated by muck; however, some pedons have surface layers of peat. The subsoil is dominated by sapric material with granular or blocky structure. The substratum has variable amount of woody and herbaceous layers. The layer is dominated by sapric material. The Freetown series consists of very deep, very poorly drained organic formed in more than 51 inches of highly decomposed organic material. They are in depressions or on level areas on uplands and outwash plains. Slope ranges from 0 to 1 percent. The organic material extends to a depth of 51 inches or deeper. The Freetown soils have a surface layer dominated by sapric material; however, in some pedons it has various proportions of both sapric and hemic materials. The subsoil is dominated by sapric material with fiber content. It has granular, subgranular blocky or platy structure, or it is massive. Organic material resembles herbaceous and woody plant tissues. The substratum is massive and contains organic material with variable amounts of woody and herbaceous plant tissues. UPLAND SOILS 38C—Hinckley gravelly sandy loam, 3 to 15 percent slopes The Hinckley series occurs in eskers, kames, outwash plains or terraces. This excessively drained soil is underlined by a compacted restrictive layer at the depth of more than 80 inches. The parent material is a sandy and gravelly glaciofluvial deposits derived from granite and/or schist and/or gneiss. The depth to the groundwater table is more than 80 inches. Aleksandra Moch, 44 Lewelyn Road, Stamford, CT 06902 tel/fax : (203) 975-7834, cell: (203) 550 9373, aleksandra_moch@yahoo.com Page 4 Typical profile • 0 to 8 inches: Gravelly sandy loam • 8 to 20 inches: Very gravelly loamy sand • 20 to 27 inches: Very gravelly sand • 27 to 42 inches: Stratified cobbly coarse sand to extremely gravelly sand • 42 to 60 inches: Stratified cobbly coarse sand to extremely gravelly sand Certified by: Aleksandra Moch Soil and Wetland Scientist Aleksandra Moch, 44 Lewelyn Road, Stamford, CT 06902 tel/fax : (203) 975-7834, cell: (203) 550 9373, aleksandra_moch@yahoo.com Page 5 #1A #8 18 18 38C 38C 38C 38C 38C 38C 38C 38C 38C wetland boundary