Chemical/Biochemical Engineering Double Major?

Hi everyone, I really like the biochemical engineering major UCD offers, but im afraid that if I change my mind and decide to go into energy resources/water purification/polymers then I wouldnt have a broad enough knowledge base. Hence, I wanted to look into ChemE/BiochemE double major. Does anyone have any insight into each program individually? Do they have a lot of overlap? Would it be feasible? THANK YOU!