Oso Creek Plant Contract Amendment Recommended for W. M. Lyles

Santa Margarita Water District’s Administration Committee recommended amending W. M. Lyles Co.’s construction manager at risk contract for the Oso Creek Water Reclamation Plant. The proposed amendment sets a $165,693,000 guaranteed maximum price, a 774-working-day schedule, and a $5,000,000 change-order contingency, subject to full Board consideration.

Document date · October 12, 2026

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Scope & details

The full contract record, as filed.

Contract amount

Guaranteed Maximum Price of $165,693,000; not-to-exceed contingency of $5,000,000

Contract type

CONSTRUCTION

Contract term

774 working days

Renewal

Contract amendment; no renewal or extension terms stated.

Document type

Agenda

Source document

Santa Margarita Water District Agenda Joint Regular Administration Committee and Special Board of Directors Meeting 2026-10-12

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Heritage Ranch Community Services District AgendaPacket Board of Directors Regular Meeting 2026-09-17

AMENDED

Heritage Ranch Community Services District, CaliforniaOriginal contract price $14,560,000; change order $32,188; updated contract price $14,592,188Sep 17, 2026

Heritage Ranch Community Services District Agenda Packet 2026-07-16

ONGOING

Heritage Ranch Community Services District, California$421,695.97Jul 16, 2026

Frequently asked questions

Common questions about this contract, answered from the record.

Who was awarded the construction contract by Santa Margarita Water District?

W. M. Lyles Company was awarded this construction contract by Santa Margarita Water District, as recorded on October 12, 2026. The contract value is Guaranteed Maximum Price of $165,693,000; not-to-exceed contingency of $5,000,000.

How much is the W. M. Lyles Company contract with Santa Margarita Water District worth?

The W. M. Lyles Company contract with Santa Margarita Water District is valued at Guaranteed Maximum Price of $165,693,000; not-to-exceed contingency of $5,000,000, covering construction work.

What type of contract is this?

This is a Construction contract, documented as a agenda record, structured as a not-to-exceed (ceiling) agreement.

Where was this contract approved?

This contract appears in Santa Margarita Water District Agenda Joint Regular Administration Committee and Special Board of Directors Meeting 2026-10-12 (Agenda), dated October 12, 2026 from Santa Margarita Water District. Civic IQ extracts contract records directly from agency meeting documents and solicitations.

What other contracts does W. M. Lyles Company hold?

W. M. Lyles Company may hold additional government contracts. View their full contract history, the agencies they serve, and total tracked spend on their Civic IQ vendor profile.

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