Bus. & Prof. Code, § 7118.6

Any contractor who, either knowingly or negligently, or by reason of a failure to inquire, enters into a contract with another person who is required to be, and is not certified pursuant to Section 7058.7 to engage in a removal or remedial action, as defined in Section 7058.7, is subject to the following penalties:

(a) Conviction of a first offense is an infraction punishable by a fine of not less than one thousand dollars ($1,000) or more than three thousand dollars ($3,000), and by possible revocation or suspension of any contractor’s license.

(b) Conviction of a subsequent offense is a misdemeanor requiring revocation or suspension of any contractor’s license, and a fine of not less than three thousand dollars ($3,000) or more than five thousand dollars ($5,000), or imprisonment in the county jail for not more than one year, or both the fine and imprisonment.