Next week marks the continuation of public workshops by the Groundwater Sustainability Agencies (GSAs) of Sutter Groundwater Subbasin in preparing a Groundwater Sustainability Plan (GSP) in response to the Sustainable Groundwater Management Act (SGMA).
We start monitoring Lambda-cyhalothrin (Warrior, Lambda-cy, Silencer, etc.) in the water column plus sediment sampling this year. The sampling takes place at the drain sites we use for thiobencarb monitoring. This will be our first experience with compliance to the Total Maximum Daily Load (TMDL) requirements. The TMDL is a forever monitoring program and we anticipate positive results leading to future modifications. We have never had an issue with our long history monitoring the pyrethroid insecticides. However, we have no ability to correlate the past results with the newer and much lower analytical methods.