Water Quality

Thiobencarb nearing exceedances

water monitoring

Monitoring results are nearing the performance goal exceedance from results collected May 12. Memorial Day weekend typically marks the peak usage for thiobencarb, and subsequently the highest monitoring results. 

With favorable weather forecast, there should not be issues with maintaining the waterholding requirements and managing drift over the drains. 

All monitoring results have been excellent with the upper Colusa Basin Drain site at the performance goal of 1.5 µg/L on May 12. 

More Water Quality Stories

water monitoring

Thiobencarb Management Calendar

The information in this twelve-month chart is just a snapshot of the management necessary to maintain thiobencarb. At the CRC, we work to provide information on the management practices, stewardship updates and the monitoring results because product maintenance does not end with the last application, cumulation of all water-holds or the collection of the final water sample. Every person using, applying and recommending thiobencarb takes ownership in successful management of the herbicide. Management requires constant diligence and coordination with the growers, registrants, pilots, applicators, pest control advisers, county agricultural commissioners and state regulators to assure continual usage of this important herbicide. 

READ MORE
water monitoring

Thiobencarb Update with Exceedance Report

Monitoring results were at the performance goal of 1.5 µg/L on May 12 and May 28. The detections were noted at the Colusa Basin Drain 5 and Butte Slough 1 sites. On June 2, the duplicate sample for quality control had an exceedance of 1.8 µg/L while the standard lab result was at 1.2 µg/L. The samples were from the Colusa Basin Drain 1 site outside Knight’s Landing. All sampling results recovered to non-detection levels on June 4.  

READ MORE