UCSC and CPSLO do not have chemical engineering.
SJSU chemical engineering historically has not be that competitive, but it is hard to translate previous year eligibility indices (GPA * 800 + SAT_RW + SAT_M) to its current formula using GPA and subparts of GPA only.
For fall 2019 frosh, admission rates for GPA >= 4.20 were as follows. But note that chemical engineering was probably more selective than the campus as a whole at many UCs:
38% UCB
87% UCD
55% UCI
35% UCLA
97% UCR
71% UCSD
73% UCSB