Third Party Review and Modeling Services

The vendor is required to provide third party review and modeling services in review of drainage studies and improvement plans, and modeling services on an as-needed basis.
- Primarily support agency staff with the review of drainage studies for various development projects within the county.
- The drainage study review aims to verify that modeling techniques are appropriate and to ensure compliance with hydrology and hydraulics standards, and as applicable, storm water quality regulatory requirements.
- The size and complexity of drainage studies will vary based on the level of detail needed for each project, per the county drainage study requirements.
- Drainage studies for development projects range from large master plan areas to small infill projects; selected consultants will be expected to be able to access and review commonly used modeling software such as hi-res, storm, storm cad, etc.
- As well as the county hydrology calculator, SacCalc, area hydrology model (SAHM) and low impact development credit and treatment sizing calculation spreadsheet.
- Occasionally, the selected consultants may be asked to support agency staff with the following:
- Review of improvement plans for development projects to ensure compliance with applicable standards and construction specifications; review of improvement plans is subject to a formal 20-10-10 day review cycle (20 work days for initial submittals, and 10 work days for each subsequent resubmittal).
- Hydrologic and hydraulic modeling efforts to determine floodplains.
- Development of master drainage studies and/or updates to existing master drainage studies.
- CLOMR/LOMR submittals to FEMA.
- Attending meetings with the agency and developers to discuss review comments.
- The selected consultants to provide a time and cost estimate for approval prior to initiating the task.

- Contract Period/Term: 2 years