GAI Consultants

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Established in 1918, Lee-Simpson Associates provides a range of civil, environmental and electrical engineering services. The company maintains a more than 11,500-square-foot facility. It offers sewage collection, disposal and treatment services. Lee-Simpson Associates provides construction inspection, site investigation and environmental assessment services. It has completed several projects that include DuBois-Jefferson County Airport, United Electrical Building, Riverside Warehouse and Office Complex and DuBois Public Library. The company offers site planning and lighting and power distribution design services. In addition, it provides railroad engineering, transportation, and erosion and sedimentation control services. Lee-Simpson Associates undertakes various projects for airports, bridges and highways. The company offers groundwater monitoring, wetland delineation and construction management services. It is located in DuBois, Pa.