Section 103.
After the completion of any improvement the Commissioner of Engineering shall immediately proceed to make a correct assessment, report the same to Council; and, upon the filing of the same, the City Clerk shall cause a notice to be served by mail upon all the owners of property assessed for such improvement, and all persons, who cannot be so notified, shall be given notice as provided in this Charter.
   Such notice shall state the character of the improvement, the total cost of the same, the amount of the assessment against the owner of property so notified, the fact that the assessment report has been filed with Council, and name a time and place when and where hearing will be held by the Special Assessment Board, which time shall not be earlier than ten (10) days after giving said notice.