Section 738.6 Of Article 2. Rates From California Public Utilities Code >> Division 1. >> Part 1. >> Chapter 4. >> Article 2.

. In establishing rates for a public utility operating any portion of its line, plant, or system within a federally designated nonattainment area, the commission shall determine which expenses related to compliance with state and local air pollution control requirements for using clean-burning fuels in that area are reasonable and necessary and shall approve those expenses.