Mo. Rev. Stat. § 80.140
Upon receipt of such petition, it shall be the duty of the board of trustees to make or cause to be made a careful estimate of the approximate cost in total of said sprinkling, oiling or treating and an average general cost per linear foot of each lot, fronting or bordering upon the streets, avenues, alleys and public places so outlined in the petition. Upon completion of said estimate a written report thereof shall be posted in one or more conspicuous places in or about the town or village, or cause to be published in at least one paper, if such paper be published in the town or village. Such report shall contain therein a notice of public hearing where persons may be heard either for or against granting the petition. Said hearing to be not less than fifteen days from date of posting of said notice of said publication. The time, date, and place of meeting shall be designated by the board of trustees.
§ 80.140, RSMo