Sally McMahon

Sally McMahon serves as a Contracting Officer within the DSC Contracting Services Division of the National Park Service, where she manages complex construction and infrastructure procurement actions critical to preserving and modernizing the nation’s park systems. Her portfolio centers on the rehabilitation of historic structures, upgrade of utility systems, and enhancement of visitor facilities across ecologically sensitive and remote locations. She exercises full contracting authority under the Federal Acquisition Regulation to ensure compliance with environmental, historic preservation, and public safety standards, often coordinating with engineering and environmental specialists to align procurement outcomes with mission-critical infrastructure goals. McMahon maintains longstanding relationships with a core group of experienced contractors, including HDR Engineering Inc., Johnson, Mirmiran & Thompson, Inc., McKenzie Construction & Site Development LLC, BookCliff Partners, LLC, and Aleut Construction LLC. These partnerships reflect a preference for firms with demonstrated expertise in heavy civil works, historic restoration, and remote-site construction. Her contracting approach emphasizes performance-based outcomes, rigorous technical evaluation, and sustained vendor collaboration to meet the unique logistical and environmental challenges of national park infrastructure projects. A strong advocate for socioeconomic equity in federal contracting, McMahon consistently prioritizes small business participation, with 40% of her awards designated as HUBZone set-asides and another 40% as total small business set-asides under FAR 19.5. This deliberate strategy supports economic development in underserved rural and tribal communities while ensuring access to specialized local labor and supply chains essential for field operations in remote park areas. Her primary procurement focus lies in NAICS 236220 (Commercial and Institutional Building Construction), 237990 (Other Heavy and Civil Engineering Construction), and 237110 (Water and Sewer Line and Related Structures Construction). She routinely oversees acquisitions for structural rehabilitation, stormwater management, water distribution systems, and site development in protected lands, demonstrating deep technical fluency in federal construction standards and sustainable infrastructure practices.