A city employee required to disqualify him or herself shall give written notice of disqualification to the city clerk, to his or her immediate supervisor and to his or her division head or department head if there is no division head. The notice of disqualification shall include the name of the applicant or person principally involved in the matter before the department, and: (1) whether the city employee has an interest in real property or an investment in a business entity with such person; or (2) who is a family relative. Such notice shall be given as soon as is reasonably possible after said employee learns, or, in the exercise of reasonable diligence should have learned, of the facts requiring disqualification and shall be made part of the official records of the city clerk. The city employee shall refrain from participation and shall not attempt in any way to use his or her official position to influence any other person with respect to the matter. (Prior code § 53.04.032)