Section 22-219.6 Representative sampling and flow measurements.
Prior to the adoption of Ord. 19649 on 09/04/2007, Section 22-219.6 read as follows.
(a) Samples and measurements taken as required herein
shall be representative of the
volume and nature of the monitored discharge. All samples shall be taken at the monitoring
point(s) specified in
permit and, unless otherwise specified, before the effluent
joins or is diluted by any other waste stream, body of water or substance. All equipment used for
sampling and analysis must be routinely calibrated, inspected and maintained to ensure their
accuracy. Monitoring points shall not be changed without notification to and the approval of the
City of Columbia.
(b) If flow measurement is required by this permit, the appropriate flow
and methods consistent with approved scientific practices shall be selected and used to ensure the
accuracy and reliability of measurements of the volume of monitored discharges. The devices
shall be installed, calibrated, and maintained to ensure that the accuracy of the measurements are
consistent with the accepted capability of that type of device. Devices selected shall be capable
of measuring flows with a maximum deviation of less than 10 percent from true discharge rates
throughout the range of expected discharge volumes.
(Ord. No. 16734, § 1, 1-2-01)