The Navy Geothermal Program Office (GPO) requires a contractor for Steam Tracer Mass Flow Rate Measurements at the Coso Geothermal Field. This Statement of Work (SOW) outlines the need for independent verification of steam flow rates, crucial for power generation revenue and mandated by existing contracts. The contractor will collect steam samples at three sites (Navy I to Navy II, BLM North to Navy I, and Navy II to BLM) twice annually, totaling 18 tests per year, from Spring 2026 through 2030 (including option years). On-site work involves introducing a vapor-phase tracer and collecting three steam samples per location over a 20-minute interval, along with obtaining corresponding steam flow rate values from the Coso DCS system. Laboratory analysis of these samples will determine steam mass flow rates (kph), with results sent to the GPO within 30 days of collection. Discrepancies of 15% or more between DCS values and tested flow rates must be highlighted. The contractor is responsible for obtaining base access, and field work will occur at the Coso geothermal plant while analysis will be performed at the contractor's lab. Travel to the Coso plant is required twice yearly.

The DON SAP SINGLE SOURCE justification outlines the need for a sole-source contract due to proprietary analysis methods and the requirement for continuity with past results. The government requires a specific geothermal analysis method used since 1995 to maintain accuracy, which is proprietary to the past contractor. This company is the only known vendor capable of providing services that satisfy the follow-on requirement, ensuring comparability of results with historical data and acceptability to stakeholders. The document certifies that these facts are accurate and complete to the best of the knowledge and belief of both the technical/requirements certifier and the contracting officer.

The presolicitation notice for RFP No. N3943026R0004, titled "B599 -- Coso Steam Flow Verification," outlines a requirement for independent verification of steam flow rates at Coso geothermal sites in China Lake, California. The contractor will collect and analyze steam flow samples, sending results to the GPO. The contract term includes a 12-month base period and four one-year option periods, with a minimum guarantee only for the base period. The procurement is being sole-sourced due to a lack of adequate competition, a decision concurred with by the NAVFAC EXWC small business office. The contact point for this RFP is John Melvin Papa.