On Wednesday November 16, the TTB published a ruling (T.D. TTB-97, available here) amending the federal definition of the Russian River Valley viticultural area and the Northern Sonoma viticultural area, by expanding each. The action first began in August of 2008 when Gallo Family Vineyards submitted a petition for the amendment. After receiving numerous comments both for and against, the TTB ruled to expand the Russian River Valley viticultural area south and southeast by 14,044 acres to 169,029 acres, an increase of 9%. This expansion will include land just west of Rohnert Park and Cotati.
The decision will also expand the Northern Sonoma viticultural area to include the entirety of the Russian River Valley viticultural area. The expansion will add 44,244 acres to the Northern Sonoma area, bringing its total to 394,088 acres, also an increase of 9%.
The TTB specifically noted in the ruling that the expansion will not affect currently approved wine labels but will allow winemakers in the expanded area to utilize the two viticultural designations not previously available to them.
The ruling goes into effect on December 16, 2011.