The Petaluma Gap Winegrowers Alliance (PGWA) announced the final rulemaking by the Alcohol and Tobacco Tax and Trade Bureau (TTB), establishing the Petaluma Gap on California’s North Coast as its newest designated AVA. This ruling defines the unique grape-growing area in southern Sonoma County and northern Marin County and acknowledges the region’s distinctive aspects. Of the 4,000 acres of vineyards in the 200,000-acre region, 75% are planted to pinot noir with most of the remaining acres equally planted to chardonnay and syrah; other grape varieties comprise less than 1% of the planted acreage.