Donald C. Sumner

Donald C. Sumner serves as a key procurement lead within the W075 Endist Sacramento office of the Department of the Army, responsible for managing acquisition strategies that sustain and modernize critical military infrastructure across the Western United States. His work directly supports the agency’s mission of ensuring operational readiness through facility lifecycle management, environmental compliance, and installation support services. Sumner routinely handles complex contracts for construction, environmental remediation, and facility maintenance, employing a blend of sealed bidding and negotiated procurement methods under FAR Part 14 and Part 15. His portfolio emphasizes mission-critical infrastructure resilience and regulatory adherence, requiring precise technical evaluation and risk mitigation in each acquisition cycle. Sumner maintains longstanding relationships with a core group of regional contractors, including MCKENZIE CONSTRUCTION & SITE DEVELOPMENT LLC, FAR WEST CONTRACTORS CORP, and ALEUT CONSTRUCTION LLC, all of which possess proven expertise in military-grade site development and environmental services. His contracting patterns reflect a preference for established vendors with demonstrated capability in Army-specific standards and remote site operations. He fosters collaborative, performance-based partnerships, often leveraging task order contracts under IDIQ vehicles to ensure responsive and scalable support across diverse geographic locations. His procurement approach prioritizes small business participation, with over 54% of awards directed toward small business set-asides, including 36.4% under Total Small Business Set-Aside (FAR 19.5) and 18.2% to Women-Owned Small Businesses. This reflects a deliberate strategy to enhance economic opportunity while maintaining a robust, qualified vendor base capable of meeting stringent defense requirements. Sumner’s primary procurement focus lies in NAICS 541620 (Environmental Consulting Services) and 561730 (Landscaping Services), with additional activity in custom programming and communications equipment. His expertise spans environmental remediation planning, ecological restoration, facility grounds management, and integrated infrastructure systems, demonstrating deep technical fluency in Army environmental and installation support domains.