Terraphase was engaged to provide environmental consulting and prepare a National Environmental Policy Act (NEPA) Environmental Assessment (EA) for U.S. Department of Agriculture (USDA) funding of a new hospital in Chelan, Washington. The site, formerly used as an apple orchard, required careful evaluation and mitigation due to documented lead-arsenate contamination of soils.

Scope of Services

Terraphase led the preparation of the NEPA EA and developed site-specific cleanup strategies to address soil contamination. Cost estimates for remediation were integrated into the broader construction planning. The project involved coordination with local Native American nations and consultation with architects to align environmental planning with design and cultural considerations. The final EA was approved by the USDA, securing partial project funding through a loan program.

Notable Accomplishments

• Identified and planned cleanup for lead-arsenate soil contamination
• Integrated remediation costs into site construction planning
• Coordinated with Native American nations and project architects to successfully obtain funding