No public or private sewer or connection shall be laid or constructed except by the City or its authorized representative or a drainlayer duly licensed by the Board of Public Works.
A. 
By vote of the Board of Public Works, drainlayer's licenses may be issued to parties who apply for the privilege of laying public or private sewers. Such applicants shall execute a bond to the City in the sum of $1,000. The bond shall provide that it will not be changed or cancelled except upon 30 days written notice to the Board of Public Works. To be licensed by the Board of Public Works, the drainlayer will:
(1) 
Comply with the City ordinances and rules and regulations passed by the Board of Public Works under which the work is performed;
(2) 
Cause the excavation to be properly guarded at all times for the protection of the public;
(3) 
Properly make all connections and joints in every sewer and leave no obstruction of any kind in any sewer; and
(4) 
Indemnify and hold harmless the City from any damage or cost for which it may be liable by reason of injuries resulting from neglect, carelessness or incompetence in constructing, repairing or connecting any sewer, or properly fencing or lighting any excavation or obstruction or in performing any other work connected therewith.
B. 
Such licenses shall be good during the calendar year unless sooner revoked.
C. 
Such licenses may be revoked and annulled by the Board of Public Works, at any time, for such cause as they determine sufficient, and all parties in interest shall be held to have waived the right to claim damages on account of such revocation, provided that such revocation shall be annulled upon compliance with City ordinances and the rules and regulations of the Board of Public Works.
The entire work of laying a private sewer to connect with a public sewer is subject to the inspection of, and shall be done in a manner satisfactory to, the Board of Public Works and the City Engineer. The drainlayer shall not perform any of the work making the connection unless the City's Sewer or Plumbing Inspector or authorized representative is present. The drainlayer shall be held responsible for any expenses to the City on account of any imperfect work.