(A) Measurements, tests, and analyzes of the characteristics of wastewater to which reference is made in this ordinance, shall be determined in accordance with forty (40) CFR one hundred thirty-six (136) methods approved by the Manager and shall comply with state and federal law. Sampling locations, times, durations, and frequencies shall be determined on an individual basis subject to approval by the Manager. The discharger shall have the option to use, at his own expense, more complete approved sampling methods, locations, times, durations, and frequencies than specified by the Manager. Any additional results beyond those required are also to be reported to the control authority.
(B) Measurements, tests, and analysis of the characteristics of wastewater required by this chapter shall be performed by a qualified laboratory. When such analysis are required of a discharger, the discharger may, in lieu of using the city's laboratory, make arrangement with any qualified laboratory, including that of the discharger, to perform such analysis.
(C) Monitoring of wastewater characteristics necessary for determining compliance with applicable pretreatment standards shall be conducted on the basis of the schedule below, unless more frequent monitoring is required by authority other than this chapter, or if the Manager determines that the characteristics of the specific discharge warrant more frequent monitoring.
Average Actual Discharge | Monitoring Frequency |
Less than 100,000 gpd | semi-annually |
100,000-999,999 gpd | quarterly |
more than 999,000 gpd | monthly |
(D) Monitoring of wastewater characteristics for any purpose other than determining compliance with pretreatment standards shall be conducted on a frequency deemed necessary by the Manager.
(E) Upon demonstration by any person that the characteristics of the wastewater discharged by that person are consistent, the Manager may reduce the monitoring frequency as may be required by authority other than this ordinance. In no case shall the frequency of monitoring be less than semiannual for determining compliance with pretreatment standards.
(F) In determining the discharge characteristics, factors such as continuous, batch, or seasonal operation, as well as the information requirements of other provisions in this chapter, shall be considered by the Manager. The Manager may obtain wastewater samples as required to verify the consistency of discharge characteristics.
(G) Fees for any given measurement, test, or analysis of wastewater required by this chapter and performed by the city shall be the same for all classes of dischargers, regardless of the quantity or quality of the discharge, and shall reflect only direct cost. Costs of analysis performed by an independent laboratory at the option of the discharger shall be borne directly by the discharger.
(Ord. 99-1, passed 1-25-99)