Go back to directory. Add to Address Book. Trevor Davison Managing Principal O2 Planning + Design Contact: Trevor Davison Address Suite 510 255 -17 Ave SW Calgary AB T2S 2T8 CAwork Phone: 403-228-1336work Email: trevor.davison@o2design.comINTERNET Website: www.o2design.com Categories: 2023 Updated 11 months ago.