I'm not sure I understand how much yeast you used.
Are you saying you added one vial of WLP001 to 10 oz of 1.036 wort and let that ferment until it started to clear and then pitched that into your brew? That would be still pretty close to 100 billion cells and you would want about 300 billion for this beer. If that is the case then it is likely that your yeast ran out oxegen causing it not to be able to produce enough sterols which leads to not enough cells being produced to ferment the beer.
If you do add more yeast, then it is going to need some oxygen. I would make a 1 litter starter and shake the daylights out of it and let that go for about 24 hours before adding it to the wort.
How did you aerate?
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