Bay City |
Code of Ordinances |
Chapter 106. UTILITIES |
Article II. SEWER USE AND PRETREATMENT |
Division 9. SAMPLING, ANALYSIS AND MONITORING REQUIREMENTS |
§ 106-176. Self-monitoring.
(a)
Except as otherwise provided by this article, self-monitoring shall be conducted by each nondomestic user to insure compliance with all applicable requirements of this article and other applicable laws and regulations.
(b)
A user performing its own sampling shall submit the samples for analysis to a laboratory (which may include the user's own laboratory) approved by the POTW.
(c)
A user performing its own sampling or monitoring shall record and maintain for all samples and monitoring (including any sampling and monitoring associated with best management practices) the date, exact location (which shall match sampling locations identified in the user's user permit, as applicable), time (including start time and stop time) and method of sampling or measurement, and the name(s) of person(s) taking the samples or measurements; sampler programming information; the sample preservation techniques or procedures used; the full chain-of-custody for each sample; the dates the analyses were performed and completed; who performed the analyses; the analytical techniques and methods used; the detection limits and/or quantification level used per parameter; quality assurance/quality control (QA/QC) procedures used and QA/QC data; and the results of the analyses.
(d)
If sampling performed by a user indicates a violation, the user shall notify the POTW superintendent 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 POTW within 15 days after becoming aware of the violation. If the POTW has performed the sampling and analysis in lieu of the user, the POTW must perform the repeat sampling and analysis unless the POTW notifies the user of the violation and requires the user to perform the repeat sampling and analysis. The user shall not be required to resample if (1) the POTW performs sampling at the user at a frequency of at least once per month, or (2) the POTW performs sampling at the user between the time when the user performs its initial sampling and the time when the user or the POTW receives the results of the sampling that indicates the violation.
(e)
If a user uses its own laboratory for sample analysis, the POTW superintendent may require the user to send split samples to an independent laboratory at a frequency specified by the superintendent as a quality control check.
(f)
Users required to do monthly sampling shall submit sample results to the POTW superintendent by the 10th day of the following month, unless specified otherwise in the user's user permit.
(Ord. No. 2017-5 , § 2, 5-15-17)