El Paso 1
El Paso 1

City of Paso Robles Wastewater Treatment Plant

Wastewater Treatment

Contract Amount: $37,921,109

Project Completion: December, 2016

Paso R 2

City of Paso Robles Wastewater Treatment Plant

Paso Robles, California

Upgrade to the existing wastewater treatment plant from 4.9 MGD to 12.74 MGD. This was accomplished by in part by replacing aging systems, including the trickling filter treatment process with a biological nutrient removal (BNR) system. Other improvements included three new secondary clarifiers, headworks ,DAFT facilities, operations, warehouse, cogeneration, and blower buildings, vehicle canopy, RAS pump station, WAS EQ tank, scum pump station, W-3 pump station, chemical feed facilities and effluent polishing earthen channel to discharge to the Salinas River. Efficiency upgrades included a cogeneration system to use digester bio-gas to generate heat and electricity. Listed construction improvements were coordinated with plant staff, and completed on this multiple phased construction project while the existing treatment process remained in operation.


City of Paso Robles

1000 Spring Street, Paso Robles, CA 93446

Owner Contact:

Matt Thompson

Design Engineer:

Black and Veatch

10995 Gold Center Drive, #100 Rancho Cordova, CA 95670

Design Engineer:

Ashu Shirolkaras

W.M. Lyles Co. PM

Jeff Mathiowetz