COVID-19 at its Site C work camp in Fort St. John.The Crown corporation said Friday that a worker arrived at the camp from Alberta on Monday and immediately self-isolated after receiving test results from Alberta Health Services two days later.A second COVID-19 test conducted by Northern Health on Thursday came back positive.The worker is being cared for by an on-site health clinic and will continue isolating in a separate dormitory away from other workers, BC Hydro said.