If a developer submits information demonstrating a significant difference between the age, social activity or interest characteristics of the population of a proposed subdivision or development and the data used to calculate the impact fee schedule, the director or superintendent may allow a special calculation of the impact fee requirements for the subdivision or development to be prepared by the developer’s consultant, at the developer’s cost; provided, however, that the director or superintendent shall have prior approval of the qualifications and methodology of the developer’s consultant in making such calculation, and any time period mandated by statute or ordinance for the approving authority’s decision on the subdivision or development shall not include the time spent in preparing the special calculation. Whether the director or superintendent accepts the data provided by the special calculation shall be at the discretion of the director or superintendent. (Ord. 963 § 6, 2004; Ord. 828 § 10, 1999).