Project Background
LADWP is in the process of converting its water disinfection process from chlorine to chloramines. Construction of the North Hollywood Ammoniation Station (NHAS) is another step in LADWP’s effort to convert its water supply to chloramine disinfection.
While the LADWP is in compliance with existing water quality regulations, it is necessary to comply with the more stringent regulations that will be in place in the next few years and to improve the water supply reliability by augmenting the City of Los Angeles’ water supply with chloraminated water purchased from the Metropolitan Water District (MWD). To this end, the LADWP is designing and constructing chloramination and ammoniation facilities to convert the entire water distribution system to chloramine disinfection.
Scope of Project
The NHAS construction project is located at the LADWP’s North Hollywood Pump Station Complex (located near Vanowen Street at Hinds Street) and two other LADWP properties. Work will be performed within LADWP’s property limits with minimal impact on the community. The project is divided as follows:
Phase 1 – Construction of the 2,800 square-foot NHAS, appropriate controls, and equipment. Construction was completed in September 2010. The commissioning of the NHAS commenced in November 2013 and can be completed in February 2014.
Phase 2 – Two onsite hypochlorite generation stations (OSHG) to treat water from the North Hollywood - West Branch Well Collector Line (located near Vanowen Street at Whitsett Avenue) and the Rinaldi Toluca Well Collector Line (located near Vose Street at Radford Street) are being constructed and will be in service in February 2014. These stations will generate low-concentration chlorine to provide disinfection for groundwater. Please see the fact sheet for more information on the OSHG stations which can be accessed throught the link below.
Current Status
Phase 1 – Construction of the ammoniation building was completed in September 2010.
Phase 2 – Construction of both OSHGs has commenced. Both structures are being constructed on LADWP property located in the area of North Hollywood. The completion date of both buildings was December 2013.
LADWP Contact Information
For additional information regarding this project, contact Mrs. Heidi Hiraoka, Project Manager, at (213) 367-5263 or by e-mail at [email protected].
Updated February 3, 2014