; and (B) make a determination about how best to represent the human health risk posed by the chemical substance involved. (c) Chemical assessment database (1) In general A toxicity value or values assigned to a chemical substance under subsection (b) shall be included in a chemical assessment database to be maintained by the Office of Research and Development of the Environmental Protection Agency. (2) Completed assessments All covered assessments stored, as of the date of the enactment of this Act, in the IRIS database of the Environmental Protection Agency shall be retained in the chemical assessment database established pursuant to paragraph (1). (3) Updates Such database shall be updated pursuant to a covered assessment performed by a relevant program office, including to make a change in the existing toxicity value or values for a chemical substance included in such database. (d) Definitions In this section: (1) The term covered assessment means, with respect to the evaluation of the human health effects resulting from chronic exposure to a chemical substance, a chemical hazard identification and dose response assessment (as such terms are defined by the Environmental Protection Agency on the day before the date of the enactment of this Act). (2) The term relevant program office includes the following offices of the Environmental Protection Agency: (A) The Office of Water. (B) The Office of Air and Radiation. (C) The Office of Land and Emergency Management. (D) The Office of Chemical Safety and Pollution Prevention. (E) Any successor to an office specified in subparagraphs (A) through (D) and any other office determined to be relevant by the Administrator of the Environmental Protection Agency. 3. Hazard Identification and Dose Response Steering Committee (a) Establishment Not later than 30 days after the date of the enactment of this Act, the Administrator of the Environmental Protection Agency (referred to in this Act as the Administrator ) shall establish a chemical hazard identification and dose