Add 500mg potassium metabisulphite to 20 gallons water to remove chlorine/chloramine (as required).
Water treated with brewing salts to: Ca=110, Mg=18, Na=16, Cl=50, S04=279
(Basically Randy Mosher's ideal Pale Ale numbers with slightly less Sulphate).
1.5 qt/lb mash thickness. Single infusion mash at 150F for 90 mins. Mashout to 168F.
60-90 min fly sparge with ~6 pH water. Collect 14.9 gallons in the boil kettle.
Boil for 90 minutes. Lid on at flameout, start chilling immediately.
Cool wort to 66F and aerate well. Ferment at 66-68F until complete.
Add dry hops once fermentation is nearing completion (ie: below 1.015). Dry hop for 7-10 days total.
Rack to brite tank (secondary), crash chill to near freezing (if possible), add 1 tsp of unflavoured gelatin dissolved in a cup of hot distilled water per 5 gallons of beer, and let clear for 2-3 days.
Package as you would normally. I keg and carbonate on the low side (around 2 to 2.2 volumes of C02) to minimize carbonic bite and let the hop/malt flavour come through.
If you prefer to use liquid yeast, either of these is an excellent choice as they are the same clean fermenting Chico strain as US-05:
Wyeast 1056 American Ale (Buy at: Amazon, MoreBeer, HighGravity, AiH, OBK)
White Labs WLP-001 California Ale (Buy at: Amazon, MoreBeer, HighGravity, AiH, OBK)