[Groundwater Environment Management Services (GEMS) | Environmental Specialists for Construction & Development Projects | Toronto, Sudbury, Ottawa Groundwater Environment Management Services (GEMS) is an environmental consulting firm that offers a wide range of knowledge, services and expertise related to geosciences, ecological sciences, environmental planning and engineering. GEMS has earned a reputation for providing insightful and reliable environmental solutions in Toronto, Sudbury, Ottawa, North York, Concord and Scarborough.]