Model Development & Support CalSim Model Logic

The Bureau of Reclamation is seeking contractor services to support improvements to operational assumptions within the CalSim 3 model and related operations analysis, with a focus on allocation, export, rescheduling, model efficiency, Cooperating Operations Agreement considerations, and Millerton operations logic. This is a Request for Quote (RFQ Number 140R2026Q0024) for commercial services under NAICS code 541690 (Other Scientific and Technical Consulting Services) with a $19.0 million size standard. Quoters will be evaluated on technical approach, demonstrating understanding of the PWS and contractor experience with CalSim 3 modeling, CVP/SWP operations, and groundwater modeling; past performance; price reasonableness; and small business participation. The contract will be awarded to the responsible quoter whose quote is most advantageous to the government, considering price and other factors. Quotes are due by May 20, 2026 at 3:00 PM PDT and must be submitted electronically to Sherry Heibeck at sherry_heibeck@ios.doi.gov, with quoters required to be registered in SAM.gov with completed Representations and Certifications by the closing date.

This is an open market acquisition with no set-aside designation, though offerors must submit a Small Business Subcontracting Plan with goals across multiple small business categories including SB, HUBZone SB, SDB, WOSB, VOSB, SDVOSB, and ISBEE concerns. The contract has a ceiling amount of $1,600,000 and consists of a base year (June 15, 2026 – June 14, 2027) with four option years extending through June 14, 2031, with pricing based on three primary labor categories: Principal Engineer, Supervising Engineer, and Assistant Engineer, with estimated hours ranging from 206 to 628 hours depending on the labor category and year. Key deliverables include WRESL code development, interim and final models, post-processing tools, technical analyses, educational materials, and documentation to be provided through a secure online platform. Payment will be made through the Invoice Processing Platform (IPP) with supporting documentation for service performance, and the performance of services is expected to be based on the contractor's understanding of CalSim 3 operations and water resource engineering.