The interview was with a panel of 3. The interviewers expressed that the interview was mainly to gauge my personality (and ability to work with the team). Since the application process included a questionnaire about why I wanted to work at the Stormwater division, we didn't really discuss those topics. Be honest about your passion for stormwater. They were all super nice, too! Overall, the interview took about 1 hour. Good luck, and be yourself!!