Diluent means liquid light hydrocarbons with an API gravity at sixty (60) degrees Fahrenheit of forty-five (45) degrees or higher which are naturally occurring petroleum or atmospherically stable products of refining and fractionation, gas well condensates or gas plant condensates (natural gas liquids), or any material acceptable for delivery to BP Pipelines (North America) Inc. pipeline at Black Oak Junction in Gary, Indiana.
Hydrofluorocarbons means compounds that only contain hydrogen, fluorine, and carbon.
Biological Samples means any physical samples obtained from Study Participants in accordance with the Protocol for the purposes of the Study.
Nitrogen oxides means nitric oxide and nitrogen dioxide, expressed as nitrogen dioxide (NO2);
Kerosene means all grades of kerosene, including, but not limited to, the 2 grades of kerosene, No. 1-K and No. 2-K, commonly known as K-1 kerosene and K-2 kerosene respectively, described in American society for testing and materials specifications D-3699, in effect on January 1, 1999, and kerosene-type jet fuel described in American society for testing and materials specification D-1655 and military specifications MIL-T-5624r and MIL-T-83133d (grades jp-5 and jp-8), and any successor internal revenue service rules or regulations, as the specification for kerosene and kerosene-type jet fuel. Kerosene does not include an excluded liquid.