73 of title 42, Code of Federal Regulations. (6) A quantity of hazardous material that requires placarding under the provisions of subpart F of part 172 of title 49, Code of Federal Regulations. (c) Compilation of route and storage pattern information for railroad carriers transporting security sensitive material Not later than 90 days after the last day of each calendar year, a railroad carrier that transports security sensitive material shall compile commodity data by route and storage pattern, a line segment or series of line segments as aggregated by the railroad carrier. Within a railroad carrier selected route, the commodity data shall identify the geographic location of the route and storage pattern and the total number of shipments by United Nations identification number for security sensitive material and storage patterns along the route. (d) Rail transportation route and storage pattern analysis for security sensitive material For each calendar year, a railroad carrier that transports security sensitive material shall submit to the Secretary a written analysis of the security risks for the transportation routes and storage patterns identified in the commodity data collected as required by subsection (c). The analysis shall include the security risks present for the route, railroad facilities, railroad storage facilities, private storage facilities, and areas of concern along or in proximity to the route. (e) Alternative route and storage pattern analysis for security sensitive material (1) In general Before the last day of each calendar year, a railroad carrier that transports security sensitive material shall submit to the Secretary of Transportation a report containing— (A) a description of any practical alternative routes and storage patterns that avoid areas of concern for each of the transportation routes or facilities such carrier used to transport or store security sensitive material through or near areas of concern during such calendar year