The commission shall, within 45 days after receipt of a draft county transportation expenditure plan forwarded pursuant to Section 131052, approve the draft plan unless one or more of the following findings is made:
(a)
There would be a significant negative regional impact as a result of the proposed projects.
(b)
There are insufficient funds available to implement the proposed projects.
(c)
Conflicts exist within the county transportation
expenditure plan.
(d)
The estimates of proceeds from any proposed retail transactions and use tax ordinance are not reasonable.