(A) (1) Measurements, tests and analyses of the characteristics of wastewater to which reference is made in this chapter shall be determined in accordance with 40 C.F.R. part 136 methods approved by the Utilities Director 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 Utilities Director.
(2) The discharger shall have the option to use, at his or her own expense, more complete approved sampling methods, locations, times, durations and frequencies than specified by the Utilities Director.
(3) Any additional results beyond those required are also to be reported to the control authority.
(B) Measurements, tests and analyses of the characteristics of wastewater required by this chapter shall be performed by a qualified laboratory approved by the Utilities Director. When such analyses 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 analyses.
(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 Utilities Director 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 - 250,000 gpd | Quarterly |
> 250,000 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 Utilities Director.
(E) (1) Upon demonstration by any person that the characteristics of the wastewater discharged by that person are consistent, the Utilities Director may reduce the monitoring frequency as may be required by authority other than this chapter.
(2) In no case shall the frequency of monitoring be less than semi-annual for determining compliance with pretreatment standards.
(F) (1) 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 Utilities Director.
(2) The Utilities Director may obtain wastewater samples as required to verify the consistency of discharge characteristics.
(G) (1) 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.
(2) Costs of analyses performed by an independent laboratory at the option of the discharger shall be borne directly by the discharger.
(Ord. 481-99, passed 2-15-1999)