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Village of East Aurora Water System Improvements July 2026 SEQRA Part 3 Supporting Information 2. Impacts on Geological Features No impacts to geological features were identified. The proposed action will not result in the modification or destruction of, or inhibit access to, any unique or unusual landforms on the site (e.g., cliffs, dunes, minerals, fossils, caves). 3. Impacts on Surface Water 3.d. The proposed action may involve construction within or adjoining a freshwater or tidal wetland, or in the bed or banks of any other water body. Water main installation will generally occur within existing maintained areas and roadway rights-of-way. Several wetlands mapped by the U.S. Fish and Wildlife Service (USFWS) National Wetlands Inventory (NWI) are located adjacent to portions of the project corridor along Nye Hill Road, Sheafer Avenue, Church Street, North Grove Street, East Fillmore Avenue, and Lawrence Avenue. In addition, NYSDEC Freshwater Wetland EA-8 is located approximately 200 feet east of Lawrence Avenue. The proposed water main replacements will cross several streams, including Tannery Brook at Sheafer Avenue, North Grove Street, Church Street, and East Fillmore Avenue. The proposed rehabilitation of the existing water storage tanks and replacement of the booster pump station will occur at existing utility facilities and are not expected to affect wetlands or other surface waters. Wetland delineations will be completed during final design to identify jurisdictional wetlands and other surface waters within the project area. Trenchless installation methods will be utilized where practicable to avoid or minimize impacts to wetlands and streams. Where open-cut installation is necessary, impacts are expected to be temporary and limited to the minimum area required for construction. No permanent wetland impacts are anticipated. Any required permits or approvals from the NYSDEC and USACE will be obtained prior to construction, and all work will be completed in accordance with applicable permit conditions. Disturbed areas will be restored following construction. 3.e. The proposed action may create turbidity in a waterbody, either from upland erosion, runoff, or by disturbing bottom sediments. Ground disturbance associated with water main installation, hydrant and gate valve replacement, and stream crossings has the potential to temporarily increase turbidity through upland erosion, stormwater runoff, or disturbance of bottom sediments where in-stream work is required. A SWPPP will be prepared and implemented to identify appropriate erosion and sediment control 4