The Director and other duly authorized employees of the City bearing
proper credentials and identification shall be permitted to enter
all properties for the purpose of inspection, observation, measurement,
sampling, and testing in accordance with the provisions of this Part
1. The Director or his representative shall have no authority to inquire
into any processes, including metallurgical, chemical, oil, refining,
ceramic, paper or other industries, beyond that point having a direct
bearing on the kind and source of discharge to the sewers or waterways
or facilities for waste treatment. Such powers shall also include
the inspection and copying of records and reports required to be kept
under this Part 1.