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Olson Environmental is now Riparia Environmental – delivering the same trusted service with a fresh new look.

Close up of an environmental specialist planting a native plant

ENVIRONMENTAL
PERMITTING

Badge showing winding path through green hills with permit sign, mountains in background, text reading 'Environmental Permitting'

WE SIMPLIFY A COMPLEX LANDSCAPE

We specialize in providing expert natural resource permitting and compliance services for projects throughout the Pacific Northwest. 

CORE SERVICES

WHAT SETS US APART

  • We have powerful support

    As a subsidiary of an award-winning consulting engineering firm, we offer an integrated approach with a proven track record for success throughout our region.

  • We know what’s at stake

    Our client-centered approach means we collaborate closely with you, tailoring services to your specific project needs and goals.

  • We know the landscape

    With 30-years of experience, we have the certifications, qualifications, and knowledge for all regulatory compliance.

WHAT WE DO

We offer a full range of natural resource-based environmental services for residential, commercial, public works, and retail development. Choose a service badge below to learn more.