§ 6.16.020. Monitoring and reporting requirements.

Any sample taken from a sample box, monitoring manhole or other representative sampling location and presumed to be discharging to the District's Sewer System shall be subject to the following requirements:

A.

The handling, storage, and analysis of all samples taken for the determination of the characteristics of wastewater discharged shall be performed in accordance with the latest edition of Standard Methods for Examination of Wastes and Wastewaters or 40 CFR Part 136. Where neither of these sources include a sampling and/or analytical technique for the pollutant in question, sampling and analysis shall be performed in accordance with the procedure set forth in the EPA publication, Sampling and Analysis Procedures for Screening of Industrial Effluent for Priority Pollutants , (April 1977), and amendments thereto, or with any other sampling and analytical procedures approved by the General Manager.

B.

The General Manager may require periodic measurements of flow and wastewater characteristics for compliance with the requirements specified in the Non-domestic Sewer Discharge Permit or this Title. Measurements of sewer flow volume, TSS, and BOD, for sewer rate determination shall be made for those IUs specifically designated by the General Manager. The General Manager shall determine the number of twenty-four-hour flow measurements and samples required. Continuous monitoring may be required in cases involving large fluctuations in quantity or quality of wastes, or if the wastewater appears to have characteristics which may damage the District's Sewer System.

C.

All flow measurements, sampling and analysis shall be performed by qualified engineering personnel and laboratories acceptable to the General Manager in the manner described, and certified under penalty of perjury by the IU, or by a licensed laboratory selected by the District at the request of the IU, in which case the User shall bear all costs incurred by the District.

D.

Samples shall represent the normal waste flow from the premises over a twenty-four-hour period. The samples shall be composited by equal time or flow intervals either manually with at least one sample collected hourly, or by automatic integrated sampling equipment approved by the General Manager. Samples for oil and grease, temperature, and pH, must be obtained using grab sample collection techniques.

E.

Where an Industrial User operates as an integrated complex involving varying processes and having separate industrial waste sewer connections within the same contributory area, such Industrial User may be considered as one unit with multiple sewer connections. An analysis for each connection shall be required.

( Ord. No. 28-D, § 2(Exh. A), 4-22-2014 )