MacKay Sposito is a multidisciplinary consulting firm founded in 1974, headquartered in Vancouver, Washington, with over 50 years of experience serving the Pacific Northwest and beyond, including Washington, Oregon, Alaska, Idaho, Montana,
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Wyoming, Utah, and California. The firm specializes in energy, public works, and land development markets, offering a comprehensive suite of professional services including civil engineering, land surveying, construction management and inspection, landscape architecture, environmental science and permitting, and planning.
