Page:United States Statutes at Large Volume 121.djvu/464

 PUBLIC LAW 110–53—AUG. 3, 2007

121 STAT. 443

(B) $33,000,000 for fiscal year 2009; (C) $33,000,000 for fiscal year 2010; and (D) $33,000,000 for fiscal year 2011. (2) PERIOD OF AVAILABILITY.—Such sums shall remain available until expended. SEC. 1519. RAILROAD TANK CAR SECURITY TESTING.

6 USC 1169.

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(a) RAILROAD TANK CAR VULNERABILITY ASSESSMENT.— (1) ASSESSMENT.—The Secretary shall assess the likely methods of a deliberate terrorist attack against a railroad tank car used to transport toxic-inhalation-hazard materials, and for each method assessed, the degree to which it may be successful in causing death, injury, or serious adverse effects to human health, the environment, critical infrastructure, national security, the national economy, or public welfare. (2) THREATS.—In carrying out paragraph (1), the Secretary shall consider the most current threat information as to likely methods of a successful terrorist attack on a railroad tank car transporting toxic-inhalation-hazard materials, and may consider the following: (A) Explosive devices placed along the tracks or attached to a railroad tank car. (B) The use of missiles, grenades, rockets, mortars, or other high-caliber weapons against a railroad tank car. (3) PHYSICAL TESTING.—In developing the assessment required under paragraph (1), the Secretary shall conduct physical testing of the vulnerability of railroad tank cars used to transport toxic-inhalation-hazard materials to different methods of a deliberate attack, using technical information and criteria to evaluate the structural integrity of railroad tank cars. (4) REPORT.—Not later than 30 days after the completion of the assessment under paragraph (1), the Secretary shall provide to the appropriate congressional committees a report, in the appropriate format, on such assessment. (b) RAILROAD TANK CAR DISPERSION MODELING.— (1) IN GENERAL.—The Secretary, acting through the National Infrastructure Simulation and Analysis Center, shall conduct an air dispersion modeling analysis of release scenarios of toxic-inhalation-hazard materials resulting from a terrorist attack on a loaded railroad tank car carrying such materials in urban and rural environments. (2) CONSIDERATIONS.—The analysis under this subsection shall take into account the following considerations: (A) The most likely means of attack and the resulting dispersal rate. (B) Different times of day, to account for differences in cloud coverage and other atmospheric conditions in the environment being modeled. (C) Differences in population size and density. (D) Historically accurate wind speeds, temperatures, and wind directions. (E) Differences in dispersal rates or other relevant factors related to whether a railroad tank car is in motion or stationary. (F) Emergency response procedures by local officials.

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