Tres Hermanos Conservation Authority

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Tres Hermanos Conservation Authority (Conservation Authority), a joint powers agency formed 20 years ago in January 1999 by the Cities of Diamond Bar and Chino Hills.   The Board will increase from four to seven members, with City of Industry allotted three members, Diamond Bar two members, and Chino Hills two members.   

Joint Press Release - Three Cities Reach Historic Settlement


Chair – Cory Moss

Vice Chair – Carol Herrera

Board Member – Catherine Marcucci

Board Member Ray Marquez

Board Member – Peter Rogers

Board Member – Newell Ruggles

Board Member – Steve Tye

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