Tres Hermanos Conservation Authority

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The Tres Hermanos Conservation Authority is a joint powers agency with representatives from Chino Hills, Diamond Bar, and City of Industry. The purpose of this authority is to work jointly with the surrounding cities to protect the 2,445 Tres Hermanos Ranch.

Chair – Steve Tye 

Vice Chair – Ray Marquez

Board Member – Nancy Lyons 

Board Member - Catherine Marcucci

Board Member – Cory Moss

Board Member – Peter Rogers

Board Member – Newell Ruggles



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