The certificate of occupancy for the use of the premises shall not be issued until such time as the landscaping requirements, buffer strips and/or other approved dividers, as required by this chapter and as approved by the Planning Board, are either actually installed in full compliance herewith or, in the event that the season is not appropriate, a performance guaranty of 125% of the cost, as estimated by the Township Engineer, has been deposited with the Township Treasurer. Such guaranty shall be in the form of cash, and the depositor shall agree in making the deposit that if performance is not completed within the time specified by the Building Inspector on the receipt delivered to the depositor, the Township may complete the requirements charging the cost against the deposit; otherwise, the deposit shall be returned in full after the satisfactory completion of the work.