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Established in 1966, Greenman-Pedersen, Inc. (GPI) is a consulting engineering, planning, survey, mapping, and construction management and inspection firm that specializes in the innovative development, design and construction of infrastructure and…

OUR COMPANY Polka Engineering is a multi service professional engineering and architectural design firm, located in Niagara Falls, New York. For the past twenty years the Polka brothers, John J. Polka, Jr. and Timothy J. Polka have consistently…