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County of Stanislaus·California

Development and Implementation of a Groundwater Use Management Program Action Plan for the County’s Non-District East Management Area in the Modesto Groundwater Subbasin

Closes 5/1/2026$500k – $1.5MRequest for Proposal
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Description

The County of Stanislaus is seeking an independent hydrologic consulting firm to develop and implement a Groundwater Use Management Program (GWUMP) Action Plan for the Non‑District East (NDE) Management Area of the Modesto Groundwater Subbasin. The consultant will conduct a technical review of existing GWUMP documents, stakeholder feedback, and a prior technical evaluation, then formulate recommendations and a detailed Action Plan that includes groundwater accounting, allocation methodology, demand‑reduction strategies, regulatory and administrative structures, and public‑outreach components. The work must be completed within a two‑year contract term, with deliverables including draft and final Action Plans, technical manuals, an administrative handbook, and support for Board consideration. • Perform independent technical review of GWUMP, stakeholder input, and the July 2025 EKI evaluation. • Design parcel‑level water‑budgeting, allocation, credit‑trading, and demand‑reduction programs for NDE landowners. • Produce regulatory, administrative, financial, and technical frameworks, public‑outreach materials, and support for Board adoption. • Maintain bi‑weekly progress calls, conduct a minimum of 2 technical review meetings, at least 2 workshops, and ≥18 public/County staff meetings over the project period.

Attached files

The solicitation documents live at the source — open the bid source above to download them.

Contact

Michael Singleton

[email protected]

(209) 525-6503

Key dates

Opened
3/23/2026
Questions due
4/14/2026
Pre-bid meeting
4/7/2026
Closes
5/1/2026
Duration
2 years

Last updated

Details

Type
Request for Proposal
Industry
Environmental Services
NAICS
541620
Solicitation №
26-09-MS

Budget estimate

$500,000 – $1,500,000

No total contract value is disclosed. Comparable two‑year groundwater‑consulting engagements for California counties typically range from $500,000 to $1.5 million, depending on staff levels, hourly rates, and the breadth of deliverables (technical reviews, public outreach, policy drafting). Assuming an average hourly rate of $150‑$250 for senior hydrogeologists and $90‑$130 for supporting staff, and estimating roughly 3,000‑5,000 billable hours over the two‑year period, the likely contract value would fall in the mid‑hundreds of thousands to low‑millions range.

AI estimate from the solicitation

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