Water Treatment Project:

Harry Tracy Water Treatment Plant Long-Term Improvements

The Harry Tracy Treatment Plant Long Term Improvements include construction of this 11-million gallon treated water reservoir.   This facility will replace the two existing  treated water reservoirs.

The Harry Tracy Treatment Plant Long Term Improvements include construction of this 11-million gallon treated water reservoir.   This facility will replace the two existing  treated water reservoirs.

The Harry Tracy Water Treatment Plant (HTWTP) treats water supplies from the Crystal Springs and San Andreas Reservoirs, which together provide the San Francisco Peninsula with emergency backup water.  This WSIP project provides significant long-term improvements to HTWTP, increasing its treatment capacity, improving reliability, and upgrading its seismic safety. 

ECS provides support to the Construction Management team, facilitating this complicated project.  During construction, HTWTP must remain operational, except during 6 scheduled system shutdowns, at which time newly constructed elements are brought online and tied into existing facilities.  Punctual completion of the improvements of the facilities will allow the SFPUC to provide up to 140 million gallons per day of backup water after a major seismic event on the San Andreas Fault.

This wall rebar and formwork is in place for a new vault for the Venturi meter.  The meter uses a converging section of pipe converging section of pipe to give an increase in the flow velocity and a corresponding pressure drop from which the flow rate can be calculated.

This wall rebar and formwork is in place for a new vault for the Venturi meter.  The meter uses a converging section of pipe converging section of pipe to give an increase in the flow velocity and a corresponding pressure drop from which the flow rate can be calculated.

The soil nails and black drainage mats shown here are part of the Criblock retaining wall at the standby power building.  Criblock is a reinforced concrete wall system using the mass of concrete for structural stability.

The soil nails and black drainage mats shown here are part of the Criblock retaining wall at the standby power building.  Criblock is a reinforced concrete wall system using the mass of concrete for structural stability.

This is the existing N44 vault which houses air release valves for freeing air pockets formed in the system.  Air in pipelines can create many issues, including accelerated corrosion or even a hazardous condition called cavitation.

This is the existing N44 vault which houses air release valves for freeing air pockets formed in the system.  Air in pipelines can create many issues, including accelerated corrosion or even a hazardous condition called cavitation.


ECS  |  290 Division Street, Suite #307, San Francisco, CA 94103  |  (415) 934-8790