; (B) continuously monitor any relevant marker compound consistent with engine oil and hydraulic fluid fume concentration in the aircraft cabin and air supply system; and (C) alert the pilot and flight attendants to poor air quality that is dangerous to human health; and (2) to have in place procedures to train the pilots to initiate standardized communication and source isolation protocols, as soon as appropriate, with the flight attendants and air traffic controllers (as needed), and to apply their professional judgement based on onboard conditions, all in response to poor air quality that is dangerous to human health. (b) Authority of the Administrator The Administrator may establish standards for aircraft cabin air quality, as the Administrator determines is necessary to protect the health and safety of air carrier crew members and passengers, in consultation with— (1) the Director of the National Institute for Occupational Safety and Health of the Centers for Disease Control and Prevention; (2) the Assistant Secretary of Labor for Occupational Safety and Health