Chemical Security Act of 2003

[AI summary unavailable — showing source text] Chemical Security Act of 2003 - Directs the Administrator of the Environmental Protection Agency to promulgate regulations to: (1) designate certain combinations of chemical sources and substances of concern as high priority categories based on the severity of the threat posed by an unauthorized release from chemical sources; and (2) require each owner and operator of a high priority category chemical source to conduct an assessment of the vulnerability of the source to a terrorist attack or other unauthorized release, identify hazards that may result from such release, and prepare a prevention, preparedness, and response plan. Sets forth: (1) certification requirements regarding assessments, and completion and review of response plans, by owners and operators of high priority chemical sources; and (2) protocols for protecting information disclosed in such certifications. Sets forth provisions regarding: (1) certification by the Administrator of source assessment and plan compliance with requirements; (2) compliance assistance; and (3) compliance orders. Provides that if the Secretary of Homeland Security determines that: (1) a threat of a terrorist attack exists that is beyond the…