Located in Payette, Idaho, Holladay Engineering Company is a private engineering firm that serves municipalities, counties, businesses and individuals of the southwestern Idaho and eastern Oregon. Founded in 1982, the company provides consulting, land use planning, geological investigation and analysis, mapping and construction management services. It conducts capacity analysis for utilities, as well as offer solid waste management, site investigation and landfill design services. Holladay Engineering Company provides design and construction services for roads and streets and stormwater facilities. The company also offers hydrogeologic characterization, bridge inspection, and wastewater collection and treatment services. It handles various projects and assignments that include topographic mapping and ordinance and standards development. Holladay Engineering Company assists in identifying grant and loan funding scenarios, as well as facilitates the application and administration process of funding programs.