§ 27-79. Sampling and analyses.
(a)
Wastewater sampling and analyses.
(1)
The prohibitions and restrictions in section 27-76, or as set forth in a special agreement (which may be a use permit), shall apply at the point where wastewater and pollutants are discharged or caused to be discharged into the POTW and required pretreatment shall be effected before such point is reached.
(2)
All measurements, tests, and analyses of the characteristics of the discharge shall be determined in accordance with the current edition of "Standard Methods for the Examination of Water and Wastewater," published by the American Public Health Association, most current American Society for Testing Material (ASTM), and E.P.A.-approved procedures contained in 40 CFR, Part 136, or any validated methods from recognized authority in cases where the above referenced procedures are not available or do not apply to the characteristic involved, or another method accepted by the city.
(b)
Significant industrial user sampling and analyses. Unless otherwise modified by a use permit, the following shall apply:
(1)
Subject to events beyond the control of the significant industrial user, significant industrial users shall sample or cause to be sampled their discharge by composite flow proportioned sampling. Samples must be obtained whenever the user is discharging and for all days on which the user discharges. The flow proportioned composite sampler shall be programmed for a minimum of one hundred (100) sampling events per day based on the average permitted flow per day. Dilution is prohibited (see section 27-77). The significant industrial user shall submit a written description of the specific sampling method, sampling equipment, and sampling location to the city director and obtain the approval of the city director. For users with a new source, this approval shall be obtained prior to commencement of the discharge. Significant industrial users discharging as of the effective date of this section shall obtain such approval within ninety (90) days of such effective date.
(2)
Significant industrial users may elect to not perform self-monitoring, in which case the city may obtain samples using composite flow proportioned sampling or may contract with an independent firm for such sampling. Samples must be obtained whenever the user is discharging and for all days on which the user discharges. The flow proportioned composite sampler shall be programmed for a minimum of one hundred (100) sampling events per day based on the average permitted flow per day. Dilution is prohibited (see section 27-77). The significant industrial user shall pay a sampling fee to the city to fully reimburse the city for such sampling, including administrative and overhead costs. If the city contracts with an independent firm for such sampling, the significant industrial user shall fully reimburse the city for amounts paid by the city to such firm.
(3)
The significant industrial user shall provide equipment at its facility to properly preserve and store up to thirty-five (35) consecutive daily samples, whether or not that user is performing the sampling.
(4)
A sample shall be taken and preserved and stored at the significant industrial user's facility for every day on which a discharge occurs. At least ten (10) daily samples shall be analyzed each calendar month. Daily samples for alternate days on which a discharge occurs shall be analyzed unless the city specifies to the significant industrial user, no later than the fifth (5th) day after the end of the calendar month, which days five (5) of the samples must be analyzed for that calendar month. If the significant industrial user discharges for less than ten (10) days in a calendar month, then the number of samples shall equal the number of days on which there is a discharge.
(5)
Samples shall be analyzed at the sole cost of the significant industrial user. If a significant industrial user does its own sampling or causes its samples to be taken, then such user shall submit the samples to a laboratory (which may be the significant industrial user's own laboratory) approved by the city for analysis. If the significant industrial user utilizes its own laboratory, that significant industrial user shall send a split sample to an independent laboratory at least quarterly as a quality control check. If a significant industrial user does its own sampling and/or analysis, the city may also take and have analyzed up to four (4) daily composites or up to four (4) grabs per day for up to four (4) days at the sole cost of the significant industrial user in any calendar month. If the city takes the samples, the city, in its sole discretion, may analyze the samples in its own laboratory or contract with an independent laboratory for the analysis.
(6)
The date when a sample is taken, start time, stop time, sample location, sampler programming information, and persons involved in the sampling shall be recorded by the significant industrial user if the significant industrial user is self-monitoring.
(7)
Flow measurements shall be taken to record the daily discharge volume.
(8)
All analytical results for the month shall be submitted to the city by the fifteenth (15th) day of the following month if the significant industrial user does self-monitoring. The city shall provide copies of analytical results for a significant industrial user if the city performs the monitoring.
(9)
The city shall be provided with splits of any sample taken by a significant industrial user if the city requests a split sample. A significant industrial user shall be provided with splits of any sample taken by the city if the significant industrial user requests a split sample within seven (7) days after the sample is taken. Split samples shall be provided at the time the sample is taken, if possible.
(10)
A significant industrial user (who is performing self-monitoring) or the city (if the significant industrial user is not performing self-monitoring) shall contract with an independent company to maintain, repair, and calibrate the sampling and flow measurement equipment and instruments used to monitor that significant industrial user. Such maintenance, repair, and calibration shall be performed as necessary so that monitoring data is accurate and representative, but in no event less frequently than twice in a calendar year at reasonable intervals. The city, in any event, may inspect and test a significant industrial user's flow meters at reasonable times.
(c)
Other users. The city director may require any other user to install a suitable control structure and necessary measuring and sampling devices to facilitate the observation, sampling, and measurement of the quantity, composition, and concentrations of discharges to the POTW. Such structure and devices shall be constructed and installed at the user's expense in accordance with plans submitted to the city director, and shall be maintained by the user so as to be safe and accessible during all reasonable times and so as to provide accurate and representative monitoring data. If the user fails to install such a structure and devices, or maintain them, the city may do so at the expense of the user.
(d)
Removal of samples and data. The city director or the city director's authorized representative shall have the right to take and remove samples of wastewater and pollutants discharged into the POTW and make copies of other data and materials concerning the same inspected during an entry upon the user's property. If the city requests that the user make photocopies of documents, the city shall give the user at least twenty-four (24) hours' notice of such a request, but this notice requirement does not affect the rights of the city to immediately copy data or other materials. Upon the written request of such user, split samples will be provided.
(e)
Authority to require submission of samples. The city director may require any user to submit one (1) or more representative samples of the wastewater discharged or which it proposes to discharge into the POTW.
(f)
Failure to permit access or removal of samples and other data. In the event a user refuses to permit access to an authorized city representative or permit such representative to obtain, take, and remove samples and make copies of other data pursuant to (b) of this section, the city may:
(1)
Order the termination of the discharge of wastewater to the POTW.
(2)
Order the user to permit access within a time certain.
(3)
Issue a citation for a violation of this regulation.
(g)
New installation of pretreatment facilities.
(1)
Notices. The user or its authorized agent shall notify the city director in writing within five (5) days after the completion of a new installation of pretreatment facilities of the time it intends to commence operation thereof. The user shall notify the city director of when start-up of such facilities will occur, the time, and the person who will conduct any tests to be performed. The pretreatment facilities shall not be placed in regular operation until such tests have been conducted to establish that the discharges will be in compliance with this chapter.
(2)
Tests by users. A representative of the city shall be permitted to witness the tests upon prior written request. The cost of the tests shall be paid by the user of the facilities.
(Ord. No. 91-7, § 2, 3-12-91; Ord. No. 99-4, § 4, 3-16-99)