Addendum 2 Gateway Wetlands Park Development

The City of Fairfax is seeking a contractor to construct the Gateway Wetlands Park, a 1.16‑acre public wetland and recreational area that includes a Level II constructed storm‑water treatment wetland, parking lot, boardwalks, sidewalks, curb‑and‑gutter, extensive native landscaping, and invasive‑species management. The contract incorporates detailed design documents, engineering specifications, and a two‑year BMP maintenance plan. Bidders must incorporate the clouded changes on sheets 19, 20, 24, 27‑30 and acknowledge receipt of this addendum. • Construct three wetland cells with forebay, weirs, step‑pool, and outfall to Accotink Creek, meeting Virginia Stormwater BMP Manual No. 13 requirements. • Perform full site grading, topsoil stripping, stock‑piling, and compaction; install permanent erosion‑ and sediment‑control structures, parking lot, boardwalks, sidewalks, and curb‑and‑gutter. • Implement invasive‑species treatment (initial mechanical/chemical in Fall 2025, follow‑up treatments July 2026 and Sep/Oct 2026) and native planting of trees, shrubs, and emergent species per the planting schedule. • Provide required permitting (U.S. Army Corps Nationwide Permit #18) and comply with Virginia DEQ, VESCH, and local Chesapeake Bay ordinances. • Deliver a two‑year post‑construction BMP maintenance plan, with ongoing annual inspections thereafter.