Riparia Environmental, formerly Olson Environmental and now a subsidiary of MacKay Sposito, has a longstanding history of serving the Pacific Northwest with trusted expertise in environmental compliance, ecological restoration, stormwater management, and landscape services. Our experienced team is dedicated to building resilient ecosystems through responsible solutions. By collaborating with MacKay Sposito’s engineers, scientists, surveyors, and construction managers, we integrate a broad range of disciplines to meet clients’ diverse needs. We offer a full range of natural resource-based environmental services for residential, commercial, public works, and retail development.