The required construction, inspection, engineering, and administration fees shall have been paid, and adequate performance guarantees shall have been posted to provide for the cost to the Township of performing work that may be necessary to protect adjacent property owners and the public interest in the event that such clearing, grading and/or further development of the site is not undertaken. Such performance guarantees shall include, but are not limited to, the cost of the Township providing stabilization of the site, drainage facilities necessary to protect off-tract areas from flooding, screening, or fencing that may be required and all improvements to be undertaken which are within existing public rights-of-way or easements.