Here's my latest attempt. Smells delicious from the airlock.

Smyrna Steam
California Common Beer
Type: All Grain
Date: 4/22/2011
Batch Size: 6.00 gal
Brewer: Bluesman
Boil Size: 7.23 gal
Boil Time: 90 min
Brewhouse Efficiency: 75.00
Ingredients
Amount Item Type % or IBU
5.00 lb Pale Malt (2 Row) (3.0 SRM) Grain 41.22 %
5.00 lb Pale Malt, Maris Otter (3.0 SRM) Grain 41.22 %
1.50 lb Munich Malt (6.0 SRM) Grain 12.37 %
0.50 lb Victory Malt (25.0 SRM) Grain 4.12 %
0.13 lb Chocolate Malt (350.0 SRM) Grain 1.07 %
1.00 oz Northern Brewer [8.50 %] (60 min) Hops 25.2 IBU
1.00 oz Northern Brewer [8.50 %] (15 min) Hops 12.5 IBU
1.00 oz Northern Brewer [8.50 %] (1 min) Hops 1.1 IBU
1.00 tsp Irish Moss (Boil 10.0 min) Misc
1.00 tsp Yeast Nutrient (Primary 3.0 days) Misc
Beer Profile
Measured Original Gravity: 1.056 SG
Estimated Alcohol by Vol: 5.37 %
Bitterness: 38.9 IBU Est Color: 10.1
Mash Profile
Single Infusion, Medium Body, Batch Sparge Step Time Name Description Step Temp
60 min Mash In Add 19.00 qt 152.0 F
10 min Step Add 19.00 qt 168.0 F
I used US05 but hope it doesn't attenuate beyond 78%

Here's a great article from BYO by JZ.
http://www.byo.com/stories/beer-styles/article/indices/11-beer-styles/2186-california-common-style-profile