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46 Hazardous Materials Transportation Incident Data for Root Cause Analysis Material Table. Having access to this information could enable the state personnel to verify the hazmat entries and even fill in any information missing from the PAR. Linking the data entry process with these and other files so the data entry personnel could choose from "pick lists" that are narrowed down as additional characters are entered could make it easier to accurately popu- late fields in the MCMIS Crash file. The MCMIS Crash file data dictionary could be enhanced so it contains not only the def- inition of a parameter and the format for the field in the database but also the format of the data to be entered. Specifying the format in the database does not necessarily define the data entry format as evidenced by past records. A section answering some commonly asked ques- tions would be valuable as well. One question might be: If the PAR lists the carrier location as one of the carrier's freight depots, should that address be entered in the MCMIS Crash file or should the address of the carrier's home office, taken from the MCMIS Registration file, be entered? Another question might be related to the choice of entering a street address or a postal box number. Questions asked about the many situations that occur when filling out the LOCATION field also would be worthwhile given the different formats currently being listed in the MCMIS Crash file. For example, an Interstate route could be designated as I-70, IR70, I070, I70, or some other format. If the potential measure is adopted to use longitude and latitude when specifying a location, then the format and accuracy must also be specified. If the coordinates were expressed in decimal degrees, then specifying the longitude and lati- tude to two decimal places would place the accident on a highway, but if specified to three decimal points the location would be shown as either being on the left- or right-hand side of the right-of-way. Build data quality consistency checks into the data entry process. For example, if a number is entered into the DOT_NUMBER field that is not in the MCMIS Registration file or is inconsis- tent with the carrier's name and address in the Registration file, then the number should be flagged and held until the correct number can be determined. If the UN number is not listed in the 49 CFR 172 Hazardous Material Table, it should not be possible to enter it into the VEHICLE_ HAZMAT_NUMBER field. 4.2 Hazardous Materials Incident Reporting System (HMIRS) HMIRS is maintained by PHMSA. In accordance with 49 CFR 171.16, all carriers of haz- ardous materials by road, rail, water, or air must fill out DOT Form F 5800.1 and submit it to PHMSA within 30 days of a reportable hazmat incident. The reportable incident could occur during loading, while in transit, during unloading, or while in temporary storage when en route between the origin and the final destination for the hazardous material. An incident is reportable if (1) the National Response Center (NRC) was notified, (2) there is an uninten- tional release of a hazardous material or the discharge of any quantity of hazardous material, (3) a cargo tank with a capacity of 1,000 gallons or greater containing any hazardous substance suffers structural damage to the lading retention system or damage that requires repair to a system intended to protect the lading system (even if there is no release of hazardous material), or (4) an undeclared hazardous material is discovered. In accordance with 49 CFR 171.15(b), NRC must be notified immediately if there is (1) an injury or fatality directly result- ing from exposure to the hazardous material, an evacuation lasting more than one hour, a major artery closed for more than one hour, or alteration of an operational flight pattern or aircraft routine; (2) a fire, breakage, or spillage of a radioactive material; (3) a fire, breakage, or spillage of an infectious substance; (4) the release of a marine pollutant; or (5) a situation exists that poses a continuous danger to life at the scene.