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SEWERING DAIRIES: THE OCSD EXPERIENCE WITH CHINO DAIRIE

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.org

Citation:  Pp. 092-098 in Total Maximum Daily Load (TMDL) Environmental Regulations–II Proceedings of the 8-12 November 2003 Conference (Albuquerque, New Mexico USA), Publication Date 8 November 2003.  .(doi:10.13031/2013.15542)
Authors:   T. G. Vitko
Keywords:   Dairy, Washwater, Runoff, Holding pond, Sewering

The impact of dairies located in the Chino Basin dairy area to the water quality of the underlying aquifer and the Santa Ana River is well documented. A solution to the occasional but potentially devastating dairy spills of manure-laden dairy washwaters into the Santa Ana River was proposed by OCSD. The proposal included working with the Milk Producers Council (MPC) to study the feasibility of sewering a few dairies to the Santa Ana Regional Interceptor (SARI) “brine” line. The SARI line was built in mid 1970’s to convey high salt wastewaters to OCSD for treatment. After an intense debate that aimed at replacing old jurisdictional concepts by a watershed-wide notion, an agreement on how to proceed with the Dairy Washwater Pilot Project (Dairy Project) was finally reached in June 2000 and amended October 2000. The first dairy connection to the SARI line was completed February 2001 and since then there have been six dairies with similar connections made. All dairy discharges are scheduled and monitored. The results of this monitoring are being used by the dairy owners and operators to improve their waste management systems and by utility agencies for the expansion of this concept to all dairies that have long-term plans in the area.

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