; and (2) in subsection (b)— (A) in paragraph (2)— (i) in subparagraph (A), by striking and investigation and inserting investigation, and related information technology activities ; (ii) in subparagraph (B), by striking and decontamination and inserting decontamination, relevant health care services and supplies, and transportation and disposal of medical waste ; and (iii) by adding at the end the following: (E) Response to environmental hazards. ; (B) in paragraph (3)— (i) in the matter preceding subparagraph (A), by striking including mental health and inserting including pharmacies, mental health facilities, ; (ii) in subparagraph (F), by inserting or exposures to agents that could cause a public health emergency before the period; and (iii) by amending subparagraph (G) to read as follows: (G) Optimizing a coordinated and flexible approach to the emergency response and medical surge capacity of hospitals, other health care facilities, critical care, trauma care (which may include trauma centers), and emergency medical systems, which may include the implementation of guidelines for regional health care emergency preparedness and response systems under section 319C–3. ; (C) in paragraph (5), by inserting and other applicable compacts after Compact