http://www.universityofcalifornia.edu/infocenter/transfer-admissions-summary can give you a general idea of each campus’ transfer admission selectivity (select transfer admit rate, campus name, and transfer GPA). However, it does not allow stratifying by major, which means that your intended major may be more or less selective than the campus overall.
All UCs except UCSC, UCM, and UCSF have chemical engineering. For non-UC chemical engineering schools in California, CSU options are CPP, CSULB, and SJSU, and private options are Caltech, Stanford, and USC.