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Home My WebLink AboutWetland Assesment LetterPage 1 of 3 CLA-7767D CLA Engineers, Inc. | 317 Main Street, Norwich CT 06360 | 860.886.1966 | www.claengineers.com April 7, 2025 Town of Montville – Inland Wetlands Commission C/O Stacy Radford, Zoning & Wetland 310 Norwich-New London Turnpike Uncasville, CT 06382 RE: Town of Montville Bridge Street Bridge Deck Replacement CLA-7767D Wetland/Soil Scientists Letter To the Commission: On behalf of the Town of Montville, CLA Engineers has performed a delineation and evaluation of the inland wetlands at the referenced site and assessed the site to provide a basis for determining the potential for impacts. The inland wetland boundary was delineated by Robert Russo CSS in November 2024. The wetland boundary and proposed development are shown on the plans prepared by CLA Engineers and submitted as part of this application. These data were augmented with additional online information from CTDEEP, USFWS, USGS, and the Town of Montville. Site Setting The site encompasses the bridge deck and former railroad grade immediately underneath it as well as the bridge approaches. The existing bridge deck is located approximately 165’ east of the Bridge Street and Maple Avenue intersection. The bridge conveys Bridge Street over the former Central Vermont/New England Central Railroad tracks. The railroad tracks no longer exist below the bridge; over time the area has developed into inland wetlands. The surrounding neighborhood is zoned Industrial (IND) per most recent update of the Town of Montville Zoning Map and consists of industrial land uses. Soils The upland soils mapped on the property by NRCS (USGS) are listed in the table below. Additional descriptive details are provided in Appendix A. Note that no wetland soil is mapped at the site. CLA Engineers, Inc. Civil Structural Survey 317 MAIN STREET NORWICH, CT 06360 (860) 886-1966 (860) 886-9165 FAX Page 2 of 3 CLA-7767D CLA Engineers, Inc. | 317 Main Street, Norwich CT 06360 | 860.886.1966 | www.claengineers.com Table 1 - Soil Types and Properties at the Bridge Street Site Soil Series Parent Material Drainage Class Texture/Characteristics Hinckley loamy sand (39) Coarse-loamy outwash Poorly drained to very poorly drained Sandy loam Urban land (307) Coarse-loamy lodgment till Well drained Fine sandy loam The Hinckley series consists of very deep, excessively drained soils formed in glaciofluvial materials. They are nearly level through very steep soils on outwash terraces, outwash plains, outwash deltas, kames, kame terraces, and eskers. Urban land comprises soils in areas with high population density, including impervious surfaces, human-transported materials, and altered soil properties, which differ significantly from traditional agricultural soils. Wetland Characteristics The wetlands at the site have formed in the excavation that was originally created for the railroad. As such it is a man-made wetland. Due to it being created in an industrialized area and being surrounded by development it lacks typical wetland functions. Potential for Impacts CLA notes that the proposed project involves work on the bridge itself and no permanent impacts to wetlands. If the project is performed per the plans and the proper best management measure maintained, CLA believes that there will be no adverse wetland impacts. Very truly yours, CLA Engineers, Inc. Robert C. Russo CSS Attachments Page 3 of 3 CLA-7767D CLA Engineers, Inc. | 317 Main Street, Norwich CT 06360 | 860.886.1966 | www.claengineers.com Appendix A Soils Maps Soil Map—State of Connecticut, Eastern Part (Bridge St Soils) Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 4/7/2025 Page 1 of 34592230459230045923704592440459251045925804592650459230045923704592440459251045925804592650739340739410739480739550739620739690739760739830739900739970 739340 739410 739480 739550 739620 739690 739760 739830 739900 739970 41° 26'59''N 72° 8'6''W 41° 26'59''N72° 7'36''W 41° 26'45''N 72° 8'6''W 41° 26'45''N 72° 7'36''W N Mapprojection:WebMercator Cornercoordinates:WGS84 Edgetics:UTMZone18NWGS84 0 150 300 600 900Feet 0 45 90 180 270Meters MapScale:1:3,170ifprintedonAlandscape(11"x8.5")sheet. Soil Map may not be valid at this scale. MAP LEGEND MAP INFORMATION Area of Interest (AOI) Area of Interest (AOI) Soils Soil Map Unit Polygons Soil Map Unit Lines Soil Map Unit Points Special Point Features Blowout Borrow Pit Clay Spot Closed Depression Gravel Pit Gravelly Spot Landfill Lava Flow Marsh or swamp Mine or Quarry Miscellaneous Water Perennial Water Rock Outcrop Saline Spot Sandy Spot Severely Eroded Spot Sinkhole Slide or Slip Sodic Spot Spoil Area Stony Spot Very Stony Spot Wet Spot Other Special Line Features Water Features Streams and Canals Transportation Rails Interstate Highways US Routes Major Roads Local Roads Background Aerial Photography The soil surveys that comprise your AOI were mapped at 1:12,000. Warning: Soil Map may not be valid at this scale. Enlargement of maps beyond the scale of mapping can cause misunderstanding of the detail of mapping and accuracy of soil line placement. The maps do not show the small areas of contrasting soils that could have been shown at a more detailed scale. Please rely on the bar scale on each map sheet for map measurements. Source of Map: Natural Resources Conservation Service Web Soil Survey URL: Coordinate System: Web Mercator (EPSG:3857) Maps from the Web Soil Survey are based on the Web Mercator projection, which preserves direction and shape but distorts distance and area. A projection that preserves area, such as the Albers equal-area conic projection, should be used if more accurate calculations of distance or area are required. This product is generated from the USDA-NRCS certified data as of the version date(s) listed below. Soil Survey Area: State of Connecticut, Eastern Part Survey Area Data: Version 2, Aug 30, 2024 Soil map units are labeled (as space allows) for map scales 1:50,000 or larger. Date(s) aerial images were photographed: Jun 14, 2022—Oct 6, 2022 The orthophoto or other base map on which the soil lines were compiled and digitized probably differs from the background imagery displayed on these maps. As a result, some minor shifting of map unit boundaries may be evident. Soil Map—State of Connecticut, Eastern Part (Bridge St Soils) Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 4/7/2025 Page 2 of 3 Map Unit LegendMap Unit SymbolMap Unit NameAcres in AOIPercent of AOI38CHinckley loamy sand, 3 to 15percent slopes11.725.5%38EHinckley loamy sand, 15 to 45percent slopes1.83.8%73ECharlton-Chatfield complex, 15to 45 percent slopes, veryrocky6.013.2%84DPaxton and Montauk finesandy loams, 15 to 25percent slopes11.825.6%85BPaxton and Montauk finesandy loams, 3 to 8 percentslopes, very stony1.53.4%103Rippowam fine sandy loam2.24.8%306Udorthents-Urban landcomplex4.710.2%307Urban land6.213.5%Totals for Area of Interest45.9100.0%Soil Map—State of Connecticut, Eastern PartBridge St SoilsNatural ResourcesConservation ServiceWeb Soil SurveyNational Cooperative Soil Survey4/7/2025Page 3 of 3