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Delaware County approves design contract for Lower Big Walnut 48-inch tunnel
Summary
The Delaware County commissioners approved a professional services agreement with Black & Veatch to design the first phase of a 48-inch trunk sewer intended to connect with a Columbus tunnel, advancing a multi-year regional sewer plan.
Delaware County commissioners voted unanimously to approve a professional services agreement with Black & Veatch Corporation to design Phase 1 of the Lower Big Walnut trunk sewer, a 48-inch tunnel intended to connect into a City of Columbus tunnel near Harlem and Smothers Road.
Tiffany Mag, director of environmental services, told commissioners the contract covers an alignment and design study that will run through 2025, with design work slated for 2026 and…
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