Bakersfield TCP Mitigation
Bakersfield TCP Mitigation

City of Bakersfield, TCP Mitigation Project

Water Treatment

Contract Amount: $23,057,068

Project Completion: June 2019

Bakersfield TCP Mitigation 1
Bakersfield TCP Mitigation 2

City of Bakersfield, TCP Mitigation Project

Bakersfield, California

1,2,3-Trichloropropane (TCP), is an unregulated organic chemical that the State Water Resources Control Board (“SWRCB”) and its Division of Drinking Water have been studying for regulation for several years. In late 2017, the SWRCB approved a maximum containment level (MCL) for TCP of 5 parts per trillion, with compliance monitoring scheduled to commence in January 2018. This fast-track project was required for the City to meet TCP MCL compliance. The City identified 34 well sites that needed treatment with granulated activated carbon (GAC) and W. M. Lyles Co. (WML) was contracted under a progressive design-build agreement for engineering and construction services. WML provided the procurement, installation, carbon loading, and start-up and commissioning of 104 owner-furnished GAC vessels, which expeditiously brought all 34 well sites into full and complete TCP MCL compliance. Provost & Pritchard was engaged to perform engineering and construction management. Construction also included site grading and earthwork, mechanical piping, concrete foundations, backwash tanks and offsite piping.


City of Bakersfield – Water Resources

1000 Buena Vista Rd.

Bakersfield, CA 93311

Owner Contact:

Art Chianello

Design Engineer:

Provost and Pritchard Consulting Group

1800 30th Street, Suite 280

Bakersfield, CA 93301

Engineer Contact:

Kevin Berryhill, P.E.

W.M. Lyles Co. PM

Kevin Shigematsu