(a) Certificate of Clerk; Amendment. Within twenty days after the petition is filed, the Clerk of Council shall complete a certificate as to its sufficiency, specifying, if it is insufficient, the particulars wherein it is defective, and shall promptly send a copy of the certificate to the petitioners' committee by registered mail. A petition certified as being insufficient for lack of the required number of valid signatures may be amended once if the petitioners' committee files a notice of intention to amend it with the Clerk of Council within two days after receiving the copy of his or her certificate and files a supplementary petition upon additional papers within ten days after receiving the copy of such certificate. Such supplementary petition shall comply with the requirements of subsections (b) and (c) of Section 9.03, and within five days after it is filed with the Clerk of Council he or she shall complete a certificate as to the sufficiency of the petition as amended and promptly send a copy of such certificate to the petitioners' committee by registered mail as in the case of an original petition. If a petition or amended petition is certified as being sufficient, or if a petition or amended petition is certified as being insufficient and the petitioners' committee does not elect to amend or request a Council review under subsection (b) of this section within the time required, the Clerk of Council shall promptly present his or her certificate to the Council and the certificate shall then be a final determination as to the sufficiency of the petition.
(b) Council Review. If a petition has been certified as being insufficient and the petitioners' committee does not file notice of intention to amend it, or if an amended petition has been certified as being insufficient, the committee may, within two days after receiving the copy of such certificate, file a request with the Clerk of Council that it be reviewed by the Council. The Council shall review the certificate at its next meeting following the filing of such request and approve or disapprove it, and the Council's determination shall then be a final determination as to the sufficiency of the petition.