B--CalSim 3 Model Development & Operations Analysis

This contract, solicitation number 140R2026Q0024, issued by the Department of the Interior's regional office in Sacramento, CA, seeks contractor support for enhancing the CalSim modeling system used by the Bureau of Reclamation and California Department of Water Resources. The acquisition is open market with no set-asides, classified under NAICS code 541690 with a size standard of $19.0 million. It is a Time and Materials contract covering a base year beginning March 1, 2026, and includes four option years extending through February 28, 2031. The contractor will provide services aimed at improving operational assumptions within the CalSim 3 model, focusing on allocation, export schedules, model efficiency, the Cooperating Operations Agreement, and Millerton reservoir operations logic. Key responsibilities include project management, ongoing model development, operations analysis, data management, and documentation. Deliverables entail progress reports, updated WRESL modeling code, post-processing tools, and thorough documentation, all produced in coordination with Reclamation staff. The work will primarily be performed at the contractor’s facility, with weekly coordination meetings to ensure timely completion of tasks and interim milestones. Quotes are due by 3:00 PM PST on May 20, 2026, and the evaluation process will be based on price and past performance, following commercial product and service acquisition guidelines. All contract terms adhere to Federal Acquisition Circular 2026-01 provisions, and Defense Priorities and Allocations System requirements do not apply.