(A) The city may inspect the monitoring facilities of any discharger to determine compliance with the requirements of this chapter. The discharger shall allow the Director or his representatives to enter upon the premises of the discharger at all reasonable hours, for the purposes of inspection, sampling or records examination. The city shall have the right to set up on the discharger's property such devices as are necessary to conduct sampling, inspection, compliance monitoring and/or metering operations.
(B) Where a discharger has security measures in force which would require proper identification and clearance before entry into their premises, the discharger shall make necessary arrangements with its security guards so that, upon presentation of suitable identification, personnel from the city will be permitted to enter, without delay, for the purposes of performing their specific responsibilities.
(C) Samples collected to satisfy reporting requirements must be based on data obtained through appropriate sampling and analysis performed during the period covered by the report, based on data that is representative of conditions occurring during the reporting period.
(1) Except as indicated in divisions (C)(2) and (3), the user must collect wastewater samples using 24-hour flow-proportional composite sampling techniques, unless the Director authorizes time-proportional composite sampling or grab sampling. Where the Director authorizes time-proportional composite sampling or grab sampling, the samples must be representative of the discharge. Using protocols (including appropriate preservation) specified in 40 CFR Part 136 and appropriate EPA guidance, multiple grab samples collected during a 24-hour period may be composited prior to the analysis as follows: for cyanide, total phenols and sulfides the samples may be composited in the laboratory or in the field; for volatile organics and oil and grease, the samples may be composited in the laboratory. Composite samples for other parameters unaffected by the compositing procedures as documented in approved EPA methodologies may be authorized by the Director as appropriate. In addition, grab samples may be required to show compliance with instantaneous limits.
(2) Samples for oil and grease, temperature, pH, cyanide total phenols, sulfides and volatile organic compounds must be obtained using grab collection techniques.
(3) For sampling required in support of baseline monitoring and 90-day compliance reports required in § 52.32 (40 CFR 403.12(b) and (d)), a minimum of 4 grab samples must be used for pH, cyanide, total phenols, oil and grease, sulfide and volatile organic compounds for facilities for which historical sampling data do not exist; for facilities for which historical sampling data are available, the Director may authorize a lower minimum.
(1981 Code, § 52.49) (Ord. 6586-93, passed 1-10-1994; Am. Ord. 09-02-013, passed 2-9-2009)