1. Southern California Coastal Water Research Project Authority Costa Mesa California USA
2. City of San Diego, Environmental Monitoring and Technical Services San Diego California USA
3. Orange County Public Health Laboratory Newport Beach California USA
4. Orange County Sanitation District Costa Mesa California USA
5. Los Angeles County Sanitation District Los Angeles California USA
6. Los Angeles City Sanitation Department Los Angeles California USA
7. California State University—Channel Islands Ventura California USA