The methodologies set forth in the Willowcreek financing plan/nexus study shall be used as the basis to set the amount of fees pursuant to any resolution referenced under subsection B of Section 18.32.050 of this chapter. Applicants for subdivision maps, building permits, or other development permits, or entitlements shall include plans and calculations prepared by the applicant or applicant's agent, specifying data necessary to calculate development impact fees, including, without limitation, each proposed land use, acreage, and other relevant data as may be required by the city director of public works, or his or her authorized designee. All fees due under this chapter shall be determined and calculated by the city director of public works, or his or her authorized designee. (Prior code § 84.09.907)