sentences:  Castle Rock Brewery had been brewing at capacity for over a year and the decision was made in 2009 to build a new brewery in adjoining property, giving Castle Rock Brewery a potential capacity of 300+ barrels per week.The brewery expansion came into place only shortly after one of Castle Rock's regular brews, Harvest Pale, won Supreme Champion Beer of Britain at the Great British Beer Festival.Production has grown over the years from 35 barrels per week in 2003, to 115–120 barrels per week in 2009–10, to 300+ barrels per week in their newly expanded brewery in 2010.