- County of Fresno, Public Works; Solid Waste Program Coordinator 1979-1987)
- County of San Diego, Public Works; Principal Solid Waste Program Manager (1987-1994)
- County of San Diego, Public Works; Public Works Program Coordinator, Wastewater Management Division (1994 - 98)
- State of California, Senate Task Force for Solid Waste Management; Recycling Committee Chairman (1987-1989)
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- Lecturer; Careers in Waste Management, Public Administration, San Diego State University (1989-1993)
- Instructor; Solid Waste Management, Environmental Health Department, Fresno State University (1986)
- Lecturer and Class Coordinator; Solid Waste Management and Recycling, Engineering Department, California State University Long Beach (1976-198O)
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- Board of Directors Grassroots Recycling Network (1996-present)
- Board of Directors; California Resource Recovery Association (1975-1979, 1980-1993, 1994-96, 2000-present)
- Board of Directors; Keep California Beautiful (1991- present)
- Board of Directors; Mount Carmel Soccer Booster Club dba Sun Devil Recycling (1991-96)
- Founding member and former Board of Director; National Recycling Coalition (1980-1993)
- California State University Long Beach, Associated Students Ecology Commission (1971-1974)
- Board of Directors; Zero Waste International Alliance (ZWIA) (2003-present)
- Board of Directors; California Resource Management Training Institute (CRMTI) (2004-present)
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