Proposed state regulations that would give local grape growers a new, required role in helping Napa River steelhead trout and Chinook salmon could be decided this week. The San Francisco Bay Regional Water Quality Control Board takes up the matter on Wednesday. It meets at 9 a.m. at the Elihu M. Harris Building, 1515 Clay St., in Oakland. 

At issue is what steps grapegrowers must take to keep sediments out of waterways. The state wants vineyard owners to have farm plans. Officials from Napa Valley Vintners and Napa Valley Grapegrowers on Monday said they would like to see more work done on the proposals. 

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