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environmental protection

Jan 9, 2026

Stormwater treatment projects on tap in Northwest Portland

ODOT is planning to spend approximately $37 million on stormwater filtration improvements near Portland bridges and U.S. Route 30 to remove pollutants from runoff.

Jul 2, 2025

Salmon Creek Treatment Plant Phase 5A: Package 2 – Columbia River Effluent Pipeline

Tapani completes key Salmon Creek wastewater project, adding 6,000 feet of pipeline to support Clark County’s growth and protect waterways for 50 years.



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