Cal. Pub. Util. Code § 2775.6

Every request for the recovery in rates of any costs or liability incurred by a gas corporation and resulting from any violation of Section 25421 of the Health and Safety Code, or of any costs, damages, penalties, or other liabilities incurred in connection with the sale of landfill gas containing chemicals known to the state to cause cancer or reproductive toxicity shall be reviewed by the commission for the purposes of establishing rates for the gas corporation. If the commission finds that the gas corporation, on or after January 1, 1989, knowingly and intentionally violated Section 25421 of the Health and Safety Code, the costs and liability shall be disallowed by the commission for purposes of determining rates.