(A) Industrial waste measurement and sampling. Any person discharging industrial waste into the disposal system shall provide and maintain a suitable point or points of access together with the necessary meters and other appurtenances at an appropriate location prior to discharge of the waste into the disposal system to permit observation, measurement, and sampling of the waste by the city. Plans for the sampling points and measuring equipment shall be submitted to and approved by the city prior to construction and installation of same. Sampling and measuring facilities shall be such as to provide safe access for making inspection and verification of their proper operating condition. The metered water supply to a source of industrial waste may be used in lieu of a measured industrial waste volume where it can be established that the metered water supply and waste quantities are approximately the same or where a measurable adjustment to the metered supply can be made to determine the waste volume.
(B) Industrial waste analyses. Determination of the character and concentration of an industrial waste discharged into the disposal system shall be made by the person discharging it or his or her designated agent. Reports showing quantities and pertinent analytical data of the industrial waste discharges shall be filed with the city.
(C) Measurement and test procedures. All measurements, tests, and analyses of the characteristics of waste to which reference is made in these rules and regulations shall be determined in accordance with the latest edition of Standard Methods for the Examination of Water and Wastewater, published jointly by the American Public Health Association, the American Water Works Association, and the Water Pollution Control Federation. Sampling shall be carried out by methods acceptable to and approved by the city. Alternate methods for certain analyses may be used subject to prior written approval by the city.
(D) Confidentiality of critical information.
(1) Any records or other information obtained by the city or furnished by an industrial waste discharger which are certified by the discharger to relate to:
(a) Production or sales figures;
(b) Processes or production unique to the discharge; or
(c) Information which would tend to affect adversely the competitive position of the discharger shall be only for the confidential use of the city in discharging its statutory obligations unless otherwise authorized by the discharger.
(2) However, all the information may be used by the city in compiling or publishing analyses or summaries relating to the general condition of the public waters so long as the analyses or summaries do not identify any discharger who has so not certified.
(Prior Code, § 7-3-4)