The application fee for a permit to install a satellite earth station shall be in accordance with the township ordinance. In addition, the construction official may, in his discretion, require the deposit of a sum not to exceed $750 to cover the cost of review sources deemed necessary by the construction official, such as the township engineer, township attorney or other township personnel. The treasurer shall place the deposit in a trust account and shall charge all disbursements for said review services. Any unused portion of the deposit shall be returned to the applicant. If the cost of review services exceeds the amount of the deposit, sufficient additional funds shall be deposited before any permit shall be issued.