In determining whether to approve any application filed under this division or under any regulation or order issued under this division, the commissioner may consider proposals made by the applicant; and, if in the opinion of the commissioner it is probable that the applicant will be able to implement any such proposal, the commissioner may make findings on the basis of the proposal. However, whenever the commissioner approves an application on the basis, in whole or in part, of a proposal made by the applicant, the commissioner shall impose upon the approval

appropriate conditions requiring that the applicant implement the proposal within the period of time that the commissioner may specify.