(b) If the board receives a petition for review pursuant to subdivision (a), the board shall review the request for preapproval and grant or deny the request pursuant to this subdivision and subdivision (c). The board shall deny the request for preapproval if the board makes one of the following findings:

1. (1) The petitioner is not eligible to file a claim pursuant to Article 6 (commencing with Section 25299.50).
2. (2) The petitioner failed to submit one or more of the documents required by the regulations adopted by the board governing preapproval.
3. (3) The petitioner failed to obtain three bids or estimates for corrective action costs and, under the circumstances pertaining to the corrective action, there is no valid reason to waive the three-bid requirement pursuant to the regulations adopted by the board.

(c) If the board does not deny the request for preapproval pursuant to subdivision (b), the board shall grant the request for preapproval. However, the board may modify the request by denying preapproval of corrective action costs or reducing the preapproval amount of those costs for any action required by the work plan, if the board finds that the fund staff has demonstrated either of the following:

1. (1) The amount of corrective action reimbursement requested for the action is not reasonable. In determining if the fund staff has demonstrated that the amount of reimbursement requested for an action is not reasonable, the board shall use, when available, recent experience with bids or estimates for similar actions.
2. (2) The action required in the work plan is, in all likelihood, not necessary for the corrective action to comply with the requirements of subdivisions (a) and (b) of Section 25296.10 and the corrective action regulations adopted pursuant to Section 25299.3.