(a) The Director, and other duly authorized employees of the City bearing proper credentials and identification, shall be permitted to enter upon all properties for the purpose of inspection, observation, measurement, sampling, and testing or other proper activities in accordance with the terms of this chapter, or any regulations promulgated thereunder. The powers and authority herein granted shall be in addition to powers of inspection otherwise granted by law to the City.
(b) All information in the possession of the owner bearing on the industrial, commercial, or other process which, in the judgment of the Director, affects the sewage works or system, shall be made available to the Director or his authorized representative.
(c) While performing the necessary work on private properties referred to in subsection (a) hereof, the Director or his authorized representative shall observe all safety rules applicable to the premises established by the Company, and the Company shall be held harmless for injury or death to City employees and the City shall indemnify the Company against loss or damage to its property by City employees and against liability claims and demands for personal injury or property damage asserted against the Company and growing out of the gauging and sampling operation, except as such may be caused by negligence or failure of the Company to maintain safe conditions as required in Section 915.07(c).