Based on information and data provided by the Owner/Applicant, and on other available information and data, the Director shall determine the estimated cost of the utility improvements, the recommended pro rata reimbursement charge, and the recommended reimbursement area. The estimated cost shall include but not be limited to design, engineering, construction, inspection, restoration, and legal review. To determine the recommended pro rata reimbursement charge, the Director may use any method or combination of methods, including but not limited to calculations based on the maximum number of developable lots under current zoning, length of front footage of the parcel along the improvements, or total square footage of the parcel subject to reimbursement.