California Code, Public Contract Code - PCC § 2204

(a) A public entity shall require a person that submits a bid or proposal to, or otherwise proposes to enter into or renew a contract with, a public entity with respect to a contract for goods or services of one million dollars ($1,000,000) or more to certify, at the time the bid is submitted or the contract is renewed, that the person is not identified on a list created pursuant to subdivision (b) of Section 2203 as a person engaging in investment activities in Iran described in subdivision (a) of Section 2202.5, or as a person described in subdivision (b) of Section 2202.5, as applicable.  A state agency shall submit the certification information to the Department of General Services.

(b) A public entity shall not require a person that submits a bid or proposal to, or otherwise proposes to enter into a contract with, the public entity with respect to a contract for goods or services of one million dollars ($1,000,000) or more to certify that the person is not identified on a list created pursuant to subdivision (b) of Section 2203 as a person engaging in investment activities in Iran described in subdivision (a) of Section 2202.5, or as a person described in subdivision (b) of Section 2202.5, as applicable, if the person has been permitted to submit a bid or proposal to the public entity pursuant to subdivision (c) or (d) of Section 2203.