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In 1987, OEI was established as a specialty civil engineering and environmental design firm, primarily focusing on solving surface water issues. Over the decades, we have finely developed our expertise in water resources and environmental design and along the way, have developed a natural proficiency within the government arena, serving federal, state, and municipal clients. As a result, we have two broad, very strong, and distinct business lines: water resources/environmental design and federal services.  Our proficiency in both business lines has led to our development of innovative solutions and approaches for our clients’ most complex projects.

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