Chlorides

Camrosa Water is part of the Calleguas Creek Watershed of Ventura County, CA. The wastewater discharging agencies of the watershed have challenged the implementation of a tentative Chloride TMDL (Total Maximum Daily Load) by the Los Angeles Regional Water Quality Control Board (RWQCB-LA) for the Watershed. Mr. Hajas will discuss the background of the TMDL development by the Regional Board, the shortcomings of the Basin Plan and Water Quality Objectives on which the TMDL is based, the impacts from the adoption of the proposed TMDL, the lack of improvement in water quality from the proposed implementation plan, and the ongoing implementation developments involving the SWRCB, the RWQCB-LA and the POTWs.

Ann Heil
Sr. Engineer, LA County Sanitation Districts

Due to an upcoming TMDL for the Santa Clara River, the LA County Sanitation Districts are facing reduced chloride discharge limitations for their Saugus and Valencia Water Reclamation Plants in the Santa Clarita Valley, located in northern Los Angeles County. This presentation will discuss the Sanitation Districts' extensive efforts to identify sources of chloride in the Santa Clarita Valley, including quantification of loadings from residential self-regenerating water softeners and from other residential sources. The presentation will also discuss chloride source control efforts including potential regulation of residential self-regenerating water softeners, public outreach to residents on water softeners and detergent use, development of commercial best management practices to reduce chloride loadings, and imposition of stringent chloride limitations on industrial discharges.

Debra Moore
Environmental Programs Manager, Irvine Ranch Water District

Irvine Ranch has taken a pro-active approach in attempting to work with the California Legislature to provide the authority for local agencies and POTWs to regulate residential water softener discharges into their systems. IRWD has initiated a AWWARF study to identify and quantify chloride and salinity loading sources to wastewater collection and treatment facilities from residential, commercial and industrial sources. Mr. Brandt and/or Ms Moore will discuss progress and findings of this study.