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Request for Qualifications (RFQ) Solicitation

RFQ #0000004821, Environmental Services, Water Quality and Hydrodynamic Model Review and Scoping Study

Submittal packages are due May 5, 2017 at 2:00 p.m.


To view RFQ #0000004821, please click here.

To view RFQ #0000004821 Submittal Package (template), please click here.

If you wish to view the public posting for RFQ #0000004821, please click here to visit the Cal-eProcure website. After accessing the Event Details, scroll down and click on “View Event Package” and then click on “View” for each File to “Download Attachment”.



  • March 22, 2017 - RFQ Available to Perspective Respondents
  • April 4, 2017 @ 4:00 p.m. - Last date/time to register for Mandatory Pre-bid Teleconference
  • April 5, 2017 @ 10:00 a.m. - Mandatory Pre-bid Teleconference
  • April 12, 2017 @ 2:00 p.m. - Questions Due.
  • April 14, 2017 - Council Provides Answers to Submitted Questions
  • May 5, 2017 @ 2:00 p.m. - SOQ Submittal Packages Due
  • May 8 to May 12, 2017 - Initial SOQ Evaluation Process
  • May 12, 2017 - Short-List Letter to all Respondents
  • May 17 to May 19, 2017 - Short-List Interviews
  • May 22 to May 23, 2017 - Final Interview Evaluations (Short-list)
  • May 24 to May 25, 2017 - Cost Negotiation Meetings
  • May 26, 2017 - Notice of Award
  • June 30, 2017 - Anticipated Contract Effective Date

For more information, please contact:



The Delta Stewardship Council is requesting qualifications from consultants to undertake a synthesis and scoping effort, including demonstration of applicable models related to the effects of island flooding, such as from levee breaks or tidal marsh restoration, on salinity and tides throughout the Sacramento-San Joaquin Delta using existing data and modeling capabilities. Such an analysis should provide a common and transparent basis for a range of Delta management decisions and agency needs such as:

  • State Water Project and Central Valley Project planning, operations, and regulation
  • Water Quality Control Plans, permits, and other water quality regulations
  • Risk assessment and responses for Delta levee failures
  • Delta levee investment policies and decisions
  • Emergency planning
  • Installation and operation of barriers for drought, water quality, and fish movement
  • Delta-wide water quality impacts of local habitat restoration activities
  • Adaptive management of habitat restoration projects and water supplies


Most current modeling efforts are focused on urgent project-specific management and regulatory needs. These modeling efforts could, in aggregate, contribute to a broader, system-wide understanding for management of Delta water quality and hydrodynamics.

This study should consider salinity, tidal dynamics, and flow effects for a variety of locations and water year types, relying on existing data and modeling capabilities to obtain a system-wide understanding and should at a minimum:

  1. Identify islands that are essential for continued attainment of the Bay-Delta Water Quality Control Plan objectives for salinity and flows and identify how results and model outputs could be made available for additional analysis (such as transport of additional water quality constituents).
  2. Identify applicable models capable of addressing the proposed Bay-Delta water quality control plan objectives and scope the level of effort required to obtain system-wide understanding of Delta water quality and hydrodynamics. Scoping, and potentially initial model runs, would include applying up to ten levee breach scenarios in Suisun Marsh and the western Delta in two water-year types (wet and blow normal).

Coequal goals

The Delta Stewardship Council was created in legislation to achieve the state mandated coequal goals for the Delta. "'Coequal goals' means the two goals of providing a more reliable water supply for California and protecting, restoring, and enhancing the Delta ecosystem. The coequal goals shall be achieved in a manner that protects and enhances the unique cultural, recreational, natural resource, and agricultural values of the Delta as an evolving place." (CA Water Code §85054)