3.C: Montana

The gasoline quality requirements in the state of Montana conform to a conventional standard. The state’s Department of Labor and Industry (MTDLI) adopts the 2012 edition of NIST Handbook 130, by reference, as its quality standard for conventional gasoline (with one important modification, discussed below). The Handbook, in turn, adopts “the most recent version of” ASTM D4814 Standard Specification for Spark-Ignition Engine Fuel, also by reference, as the applicable standard for parameters outside the purview of EPA’s federal conventional gasoline quality regulations. The relevant federal parameters and limits are listed in Fig. 1 of Part 1 of this report, whereas the applicable ASTM D4814 parameters and limits are listed in Fig. 3 of Part 1 of this report.

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