(CNN)The Trump administration has rejected California's request for a disaster declaration for six destructive wildfires that burned hundreds of thousands of acres across the state, including a massive central California wildfire that has become the single largest in state history.

"The request for a Major Presidential Disaster Declaration for early September fires has been denied by the federal administration," Brian Ferguson, a spokesperson for the Governor's Office of Emergency Services, confirmed to CNN. The state plans to appeal the decision.

The denial comes after California Gov. Gavin Newsom requested financial aid from the federal government in a September 28 letter to the Trump administration outlining the financial impact of the wildfires.