; and (2) in subsection (e)(1) by striking gas or hazardous liquid pipeline facility and inserting gas pipeline facility, hazardous liquid pipeline facility, or carbon dioxide pipeline facility . (f) High-Density population areas and environmentally sensitive areas Section 60109 of title 49, United States Code, is amended— (1) in subsection (a)(1)(B)— (A) by inserting or carbon dioxide after by operators of hazardous liquid ; (B) by inserting and carbon dioxide after each hazardous liquid each place it appears; and (C) in clause (ii) by inserting or carbon dioxide after there is a hazardous liquid ; and (2) in subsection (b) by inserting or carbon dioxide after there is a hazardous liquid ; (3) in subsection (g)— (A) in the heading by inserting and carbon dioxide after Liquid ; and (B) in paragraph (2) by inserting or carbon dioxide after underwater hazardous liquid . (g) Technical safety standards committees Section 60115 of title 49, United States Code, is amended— (1) in subsection (b)(2)— (A) by striking transporting hazardous liquid or operating a hazardous liquid pipeline facility and inserting transporting hazardous liquid, transporting carbon dioxide, operating a hazardous liquid pipeline facility, or operating a carbon dioxide pipeline facility each place it appears; and (B) by striking transporting hazardous liquid and of hazardous liquid pipeline facilities and inserting transporting hazardous liquid or transporting carbon dioxide and of hazardous liquid pipeline facilities or carbon dioxide pipeline facilities ; (2) in subsection (b)(3)(B) by striking the natural gas or hazardous liquid industry and inserting the natural gas industry, the hazardous liquid industry, or the carbon dioxide industry ; (3) in subsection (b)(4)(B) by striking natural gas pipelines or hazardous liquid pipeline facilities and inserting natural gas pipelines, hazardous liquid pipeline facilities, or carbon dioxide pipeline facilities