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  5. ›Pleasant Oak Transmission Main and Diamond Springs…

Awarded contract·El Dorado Irrigation District·California

Pleasant Oak Transmission Main and Diamond Springs Transmission Main Upgrade

Won by Lumos & Associates, Inc.$7MSingle Award
Contract source

Awarded vendors

  • Lumos & Associates, Inc.

Description

This procurement concerns the upgrade of two water transmission mains—Pleasant Oak and Diamond Springs—owned by the El Dorado Irrigation District in El Dorado County, California. The district issued RFP 26‑02, opened on March 23 2026, with a revised proposal deadline of May 13 2026 (per Addendum 1). A Notice of Intent to Award dated May 29 2026 indicates that Lumos & Associates, Inc. is the intended awardee, with the Board set to consider the award on June 8 2026. The scope is limited to professional‑services engineering work for the transmission‑line upgrades; detailed technical specifications, budget, and contract terms are not included in the summaries. • Project: Upgrade of Pleasant Oak and Diamond Springs water transmission mains. • Agency: El Dorado Irrigation District (California). • Vendor: Lumos & Associates, Inc. (single‑award). • Key dates: RFP opened 03/23/2026, addendum 04/29/2026, bid deadline 05/13/2026, intent‑to‑award 05/29/2026, award consideration 06/08/2026.

Attached files

Key dates

Bids closed
5/13/2026
Contract modified
4/29/2026

Last updated

Details

Award type
Single Award
Procurement
Full and Open Competition
Solicitation
Request for Proposal
Industry
Water Management and Sanitation
NAICS
237130
Solicitation №
RFP26-02

Contract value

$7,000,000

No monetary value is provided in the summaries. Based on comparable irrigation‑district transmission‑main upgrades in California, such projects typically range from $4 million to $10 million depending on length, diameter, material upgrades, and associated civil‑engineering services. Assuming a medium‑scale upgrade (≈2 – 3 miles of main, with conduit replacement, valve upgrades, and engineering design), a conservative midpoint estimate would be around $7 million. This accounts for design fees (≈10‑15% of construction cost), construction labor, materials, permitting, and contingency.

AI estimate from the award documents

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