Detections of thiobencarb were found at the drinking water intakes for the Cities of Sacramento and West Sacramento on May 27, 28, 29 and 30. Fortunately, the results were j-flagged, which means the numbers were results at or greater than the lab’s method detection limit and less than the reporting limit. Had the results not been j-flagged, we would have a more serious discussion about increasing thiobencarb concentrations in the river.
The CRC monitoring results were in exceedance of the performance goal in the drains on May 28 and 30. The performance goal is set at 1.5 µg/L (in the drains) and the city method detection limit at the drinking water intakes is 0.2 µg/L.