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§ 1042.705 Generating and calculating emission credits.
The provisions of this section apply separately for calculating emission credits for NOX, NOX + HC, or PM.
(a) For each participating family, calculate positive or negative emission credits relative to the otherwise applicable emission standard. Calculate positive emission credits for a family that has an FEL below the standard. Calculate negative emission credits for a family that has an FEL above the standard. Sum your positive and negative credits for the model year before rounding. Round the sum of emission credits to the nearest kilogram (kg) using consistent units throughout the following equation: