WASHINGTON (AP) — A top environmental official is warning lawmakers that automatic spending cuts due next month would jeopardize EPA’s ability to protect against oil spills, air pollution, and hazardous waste.

The cuts are outlined in a letter to the Senate Appropriations Committee obtained by the Associated Press. In the letter, deputy EPA administrator Bob Perciasepe says cuts would shut down some air pollution monitors and halt some cleanups at the nation’s most hazardous waste sites.

The air quality forecasting system that keeps school children and people with asthma inside on bad air days could also be eliminated.