been poking around for ESB recipes and found this old (dead?) post. love Red Hook, and it has gotten GABF noise lately - gold in 09.
@Blender was right on the Chinook. Red Hook posts their stats on their site - here is a cut/paste:
Malts: Pale, Caramel, Carapils
Hops: Alchemy, Willamette, Centennial, Crystal
Color SRM: 13
Bitterness Units: 28.0 IBU
Original Gravity: 13.75 degrees plato