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If a user's sampling indicates a violation, the user shall notify the city manager within 24 hours of becoming aware of the violation. The user shall also repeat the sampling and analysis and submit the results of the repeat analysis to the city manager within 30 days after becoming aware of the violation. The user is not required to resample if the city manager conducts monitoring at the user's facility at least once a month, or if the city manager samples between the user's initial sampling and when the user receives the results of this sampling. If the city performed the sampling and analysis in lieu of the industrial user, the city will perform the repeat sampling and analysis unless the city notifies the industrial user of the violation and requires the user to perform the repeat sampling and analysis.
(`64 Code, Sec. 25-56) (Ord. No. 2494, 2761)
All pollutant analyses, including sampling techniques, to be submitted as part of an IWD permit application or report shall be performed in accordance with the techniques prescribed in 40 CFR Part 136, unless otherwise specified in an applicable categorical pretreatment standard. If 40 CFR Part 136 does not contain sampling or analytical techniques for the pollutant in question, sampling and analyses shall be performed in accordance with procedures approved by the EPA.
(`64 Code, Sec. 25-57) (Ord. No. 2494)
(A) Except as indicated in subsection (B) below, the user shall collect wastewater samples using flow proportional composite collection techniques. In the event flow proportional sampling is infeasible, the city manager may authorize the use of time proportional sampling. Where time-proportional composite sampling or grab sampling is authorized by the city manager, 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 city manager, as appropriate. In addition, grab samples may be required to show compliance with instantaneous discharge limits.
(B) Samples for oil and grease, temperature, pH, cyanide, phenols, sulfides, and volatile organic compounds shall be obtained using grab collection techniques.
(C) For sampling required in support of baseline monitoring and 90-day compliance reports required in section 19-71 and 19-73 (40 CFR 403.12(b) and (d)), a minimum of four 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 city manager may authorize a lower minimum. For the reports required by section 19-74 (40 CFR 403.12(e) and 403.12(h)), the industrial user is required to collect the number of grab samples necessary to assess and assure compliance by with applicable pretreatment standards and requirements.
(D) Samples should be taken immediately downstream from pretreatment facilities if such exist or immediately downstream from the regulated process if no pretreatment exists. If other wastewaters are mixed with the regulated wastewater prior to pretreatment the user should measure the flows and concentrations necessary to allow use of the combined wastestream formula of 40 CFR 403.6(e) in order to evaluate compliance with the pretreatment standards. Where an alternate concentration or mass limit has been calculated in accordance with 40 CFR 403.6(e) this adjusted limit along with supporting data shall be submitted to the city.
(`64 Code, Sec. 25-58) (Ord. No. 2494, 2761, 2875)
Written reports, applications, notices, and all mailings shall be deemed to have been submitted on the date postmarked. For reports that are not mailed, postage prepaid, into a mail facility serviced by the United States mail, the date of receipt of the report shall govern.
(`64 Code, Sec. 25-60) (Ord. No. 2494)
Users subject to the reporting requirements of this article shall retain, and make available for inspection and copying, all records of information obtained pursuant to any monitoring activities required by this article and any additional records of information obtained pursuant to monitoring activities undertaken by the user independent of such requirements, and documentation associated with BMPs established under section 19-26(C). Records shall include the date, exact place, method, and time of sampling and the name of the person taking the samples, the dates analyses were performed, who performed the analyses, the analytical techniques or methods used, and the results of such analyses. These records shall remain available for a period of at least three years. This period shall be automatically extended for the duration of any litigation concerning the user or the city or where the user has been specifically notified of a longer retention period by the city manager.
(`64 Code, Sec. 25-61) (Ord. No. 2494, 2761)
DIVISION 7. COMPLIANCE MONITORING
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