Water Projects

1,2,3-Trichloropropane (TCP) Removal Treatment Plant

Chino Hills, California
$13 million
Summer 2024
City of Chino Hills, Public Works
Hazen and Sawyer
Garney Pacific Inc.

Butier is providing professional construction management support and special inspection services for the 1,2,3-Trichloropropane (1,2,3-TCP) Removal Treatment Plant Project. This critical project is required for the City of Chino Hills to comply with the State Water Resources Control Board mandate of an MCL of 0.005 micrograms per liter of 1,2,3-TCP, which was identified in the City’s groundwater wells supply. The water treatment facility will consist of granular activated carbon (GAC) vessels to remove 1,2,3-TCP.

Once completed, the treatment facility will provide the following benefits: produce nearly 3 million gallons per day of high-quality drinking water for residents; reduce the City’s dependence on costly imported water from other agencies; improve groundwater resources; increase local, sustainable water supplies; save the City money on purchased water delivery costs; and enhance resiliency during drought.

Scope of Work

  • Construction of centralized GAC treatment plant to remove contaminants from the water
  • Installation of 10 GAC treatment vessels and electrical and control systems
  • Booster 9 Station improvements, including replacing pumps and motors and upgrading electrical units and telemetry system
  • Installation of perimeter wall, gates, fencing, landscaping, irrigation, site grading, piping, paving, and foundations

123-TCP Fact Sheet (View/Download)

City of Chino Hills Project Website

City of Chino Hills Press Release