Canada is celebrating a milestone as oil and gas companies have now voluntarily relinquished the last remaining permits for oil and gas exploration and development off its Pacific Coast. Canada has a federal moratorium on all offshore oil and gas activities on its West Coast in place since 1972, following a provincial moratorium by British Columbia on oil and gas drilling from 1959. However, permits issued before 1972 were still valid. Now that Chevron relinquished the last remaining oil and gas development permits offshore Western Canada, the…