UC Merced
UC riverside
UC Santa Cruz
UC Gpa 3.0
Act 28
UCs look at more than GPA and test scores so, if you meet the min (3.0 and all the right classes) With strong ECs and a compelling essay, any of those schools might take you. It is pretty unlikely. You will really need to stand out in another way.
Take a look at this tool to see the admit rates by campus and GPA band.
http://www.universityofcalifornia.edu/infocenter/freshman-admissions-summary
Take a look at CSUs like Riverside, Sonoma, and SJSU.
Good luck.
Agree with ^^@NCalRent. Your ACT is on target for all the schools but GPA will hinder your chances. Go ahead and apply but consider the Cal states recommended by @NCalRent. Other good schools to look at are Cal Poly Pomona, Sac State, CSUN, SFSU depending upon intended major.