California Toxics Rule Compliance with Pollution Preventionlearn about the impacts of the California Toxics Rule and State Implementation Plan on your Pollution Prevention Program; discover how LACSD is incorporating pollution prevention into their programs; and learn about NDMA source control in Orange County. NDMA Source Control: Identification and Control of NDMA sources in Orange County, CAKelley Christensen On May 18, 2000 the USEPA published 40 CFR 131, Water Quality Standards; Establishment of Numeric Criteria for Priority Toxic Pollutants for the State of California, generally known as the California Toxics Rule. This final rule had a profound effect on municipalities involved in water reclamation. One pollutant in particular, called n-nitrosodimethylamine, or NDMA, is a serious concern because of its potential cancer link and its extremely low discharge limit. Since the summer of 2000, the Orange County Sanitation District, in coordination with other regional agencies, has been involved in projects to identify and reduce the sources of NDMA to the sewer. From August until December 2000, the District conducted a study that included trunkline sampling, point source sampling, and sampling of drinking water supplies. The District is working with industries identified as significant point sources to eliminate the use of products that contain or create NDMA. The project coordinated the efforts of the District with the Orange County Water District, Los Angeles County Sanitation District, and Irvine Ranch Water District. The final report includes details of sample collection and analysis methods, regulatory issues, NDMA distribution in the District's service area, and opportunities for control measures.
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