NASA's Marshall Space Flight Center is seeking to continue environmental remediation oversight at the Santa Susana Field Laboratory in Ventura County, California, as mandated by agreements with the California Department of Toxic Substances Control (DTSC). The procurement involves a sole source contract to acquire services from the California DTSC under the authority of 10 U.S.C. 3204(a)(1), emphasizing the critical nature of environmental remediation in compliance with regulatory requirements. Interested organizations are invited to submit their capabilities and qualifications via email to Samuel P. McIlvoy by 4:00 PM Central on February 7, 2025, to determine the potential for competitive acquisition. Further details, including the applicable NASA Clause 1852.215-84, Ombudsman, can be found on NASA's procurement website.