Hi Shrinkrap!
I applied last year, too! On the application instructions, you are supposed to stop and figure your eligibility. (page 8 of the paper instructions:
http://www.universityofcalifornia.ed...uctions_FR.pdf ) On pages 5 - 7 it talks about the different types of eligibilty and how to achieve them, and that the FIRST step in admissions is they determine if you are eligible, and only eligible students are considered. (The trade-off is that ALL eligible students who apply are guaranteed a spot at one of the campuses - but not necessarily their top choices.) There are similar instructions and "warnings" on the online application. I suppose a non-eligible student could go ahead and apply, but they would know before submitting it and paying the $60 per campus that they would not be considered for admission.