California Landscape Contractors Association
http://www.clca.org/

A&J Training Trust Fund
Website: www.ajtraining.org

Piping Industry Progress and Education Trust Fund
Website: www.pipe.org

Southern California Pipe Trades District Council 16

Website: http://www.dc16.org

Southern California Pipe Trades Administration Corporation
Website: www.scptac.org

Laborers' Health & Safety Fund Website
Website: www.LHSFNA.org

Laborers-Employers Cooperation & Trust
Website: www.CaLECET.org

Southern California District Council of Laborers
Website: http://scdcl.org/