20 days before beginning any of work on the assessment plan, the Director of Transportation: shall prepare and file, in his office, a location plan showing the proposed work and an estimate of the cost thereof; and shall send notice of the proposed work and an estimate of its cost, by mail, to each abutting property owner as shown on the assessment books:stating that after the expiration of 20 days from the date of 1st mailing, he will proceed to do said work (describing said work, generally, in said notice and referring to said estimate and location plat) on the assessment plan provided in this ordinance; warning all persons and corporations desiring to put in any pipes or conduits in said alleys or to do other work requiring the digging up of the same, to proceed at once to do such work; and further warning all persons interested that they may appear in the Director’s office, on a day certain, at the time and location stated in the notice and make known to the Director any objections they may have to doing the work on the assessment plan. City Code, 1950, art. 35, §54(c) 1966, art. 26, §2(c) 1976/83, art. 26, §2(c) Ord. 45-273 Ord. 49-599 Ord. 73-438 Ord. 15-435