The voluntary program, developed by the Napa Valley Vintners, is open to all Napa County vintners and grape growers, and focuses on building environmentally sound, sustainable practices that meet and exceed more than 20 local, state and federal land or production "best practices," and is certified by an independent third party.

     Napa County vintners participate in programs focused on winery operations and/or farming practices tailored specifically to each property to meet and exceed environmental compliance and continue to protect and enhance the ecological quality of the region.