California Code, Food and Agricultural Code (Formerly Agricultural Code) - FAC § 13144

(a) The department shall establish specific numerical values for water solubility, soil adsorption coefficient (Koc), hydrolysis, aerobic and anaerobic soil metabolism, and field dissipation. The values established by the department shall be at least equal to those established by the Environmental Protection Agency. The department shall revise the numerical values when the department finds that the revision is necessary to protect the groundwater of the state. The numerical values established or revised by the department shall always be at least as stringent as the values being used by the Environmental Protection Agency at the time the values are established or revised by the department.

(b) On or before December 31, 2004, and updated at least annually thereafter, the director shall post the following information on the department's Internet Web site for each pesticide registered for agricultural use and during years that specific numerical values are revised:

(c) The department shall determine, to the extent possible, the toxicological significance of the pesticides listed in the Groundwater Protection List.