SOLICITATION NOTICE
F -- Mesh Refinement and Calibration of HydroGeoSphere Sacramento Valley Model
- Notice Date
- 4/27/2009
- Notice Type
- Presolicitation
- Contracting Office
- Bureau of Reclamation - Mid-Pacific Regional Office 2800 Cottage Way, Room E-1807Federal Building Sacramento CA 95825
- ZIP Code
- 95825
- Solicitation Number
- 09SQ200181a
- Response Due
- 5/5/2009
- Archive Date
- 4/27/2010
- Point of Contact
- Bettye Lou Mahoney Contract Specialist 9169785570 bmahoney@mp.usbr.gov;<br />
- Small Business Set-Aside
- N/A
- Description
- The Bureau of Reclamation intends to issue a Request for Quotation for a firm fixed-price purchase order for Mesh Refinement and Calibration of HydroGeoSphere Sacramento Valley Model. The applicable North American Industry Classification System (NAICS) Code is 541620 and the related small business size standard is $7.0 Million. This is an unrestricted solicitation and all offers from responsible concerns will be considered. Solicitation 09SQ200181 will be posted to http://ideasec.nbc.gov on or about April 27, 2009. The date for receipt of proposals will be approximately May 5, 2009. The solicitation must be downloaded at the above website; no paper copy of this solicitation will be distributed. Prospective contractors MUST be actively registered in the Central Contractor Registration (CCR) database at http://www.ccr.gov to be eligible for award. Questions concerning this solicitation should be directed to bmahoney@mp.usbr.gov. A description of the work to be performed follows: Calibration of the integrated surface/subsurface hydrologic model of the Sacramento Valley using the in-house HydroGeoSphere (HGS) numerical model is required to enhance the model's utility for analyses of surface and subsurface water interactions and hence impacts of groundwater pumping on surface water. Task 1: Re-generation of Finite-Element Mesh Subtask 1.1. The Government will provide to the Contractor a DEM with the HGS Sacramento Valley model domain. The Contractor shall import the DEM into a GIS-based tool, such as ArcHydro, to generate a stream network. The Contractor shall evaluate inconsistencies between the DEM generated stream networks and those resulting from the topography driven stream networks resulting from the HGS Sacramento Valley model files. The Contractor shall resolve inconsistencies using areal information from other sources (e.g., Google Earth). The Contractor shall modify the DEM with the GIS-based tool to ensure that well-defined, correctly placed streams result from the model topography. Subtask 1.2. The Contractor shall import the processed DEM in Grid Builder to generate a 2-D land surface mesh with sufficient refinement along the stream paths defined by the DEM to represent the stream network. The Contractor shall interpolate the elevations from the processed DEM onto the created mesh. Subtask 1.3. The Contractor shall import the mesh elevations into a GIS-based tool (e.g., ArcHydro) and check for consistency of flow paths. If necessary, the Contractor shall re-process mesh elevations to remove local sinks that may reappear due to interpolation. Subtask 1.4. The Contractor shall use the new 2-D mesh to create a three dimensional mesh that includes the subsurface grid layering with appropriate layer thicknesses as needed by the model. The Contractor shall populate the new mesh with surface and subsurface properties. The Contractor shall perform initial simulation of overland flow to check for consistency with the actual stream network determined by areal sources. Task 2: Adjustment of Numerical Parameters to Reduce Run TimeThe Contractor shall adjust numerical parameters to reduce the model run time such that a 15-year simulation and all additional work can be completed within the stated performance period. Task 3: Parameterization and Sensitivity Analysis:In this task, the Contractor shall: (a) determine the appropriate surface/subsurface flow parameters to be considered in the calibration process; (b) perform sensitivity analyses on the appropriate model parameters to determine the parameters most suitable for calibration. Task 4: Linkage of PEST and HGS:The Contractor shall prepare all input and output file templates needed for automated calibration of the HGS model using Parameter Estimation (PEST). Task 5: Linked PEST-HGS Calibration Runs:Based on the results of Task 1 and using the input and output file templates from Task 2, the Contractor shall perform the calibration runs. Task 6: Analysis and Documentation of Results:The Contractor shall write a report documenting and analyzing the results from the calibration runs of Task 3. This shall include presentation of which parameter values were changed and the associated improvement in agreement with the observed data.
- Web Link
-
FedBizOpps Complete View
(https://www.fbo.gov/?s=opportunity&mode=form&id=34330f2b10723ad3fcd7844fb567a237&tab=core&_cview=1)
- Place of Performance
- Address: Sacramento, CA<br />
- Zip Code: 958251898<br />
- Zip Code: 958251898<br />
- Record
- SN01802293-W 20090429/090427215217-34330f2b10723ad3fcd7844fb567a237 (fbodaily.com)
- Source
-
FedBizOpps Link to This Notice
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