If there is any reasonable doubt as to the likelihood of the intended use conforming to the performance standards, the Planning Board shall request a deposit of $1,000 to be submitted with the application which will be used to defray the cost of the special reports required to process it. The Planning Board shall refer the application for investigation and report to one or more expert consultants selected by the Board as qualified to advise on conformance to the required performance standards. Such consultant or consultants shall make their report within 45 days after his or their receipt of such application. A copy of such report shall be promptly furnished to the applicant. At the next regular meeting of the Board or within 30 days of receipt of consultant's report, whichever comes sooner, the Board shall render a decision in the form of a written report regarding said application. Any permit authorized and issued shall be conditioned on, among other things, the applicant's completed buildings and installations, in operation, conforming to the applicable performance standards and the applicant's paying fees in excess of $1,000, if needed, to cover expert's abovementioned reports. All moneys not used to pay for the services of the expert consultant or consultants, deemed reasonable and necessary by the Board for advice, shall be returned to the applicant at the time the Board renders the written decision.