This sources sought notice seeks market research on qualified firms for complete elevator modernization and environmental investigation/remediation at Joint Base San Antonio Randolph AFB, Building B663, in Texas. The elevator scope includes replacing hydraulic, mechanical, and control components with non-proprietary open-architecture equipment, ADA/ASME-compliant panels and communications, testing/certification, and performance by a Texas Licensed Elevator Contractor. The environmental scope includes soil borings around the hydraulic jack/casing, EPA-approved laboratory analysis, and TCEQ/TRRP reporting, with a lab report due within 20 days of inspection and any Remedial Action Plan due within a 30-day period of performance. If contamination is found, the contractor must perform excavation, containerization/disposal, and clean backfill. Firms should be prepared to demonstrate recent elevator modernization experience, environmental/remediation capability, and DoD installation experience involving secure access and base coordination.