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San Joaquin County GWPA Runoff Condition GWPA Runoff Groundwater Protection Areas 3CCR Section 6487.4 Except as provided in sections 6487.1, 6487.2, and 6487.3, use of pesticides registered for agricultural, outdoor industrial, and outdoor institutional use containing chemicals listed in section 6800(a) shall be prohibited in runoff Groundwater Protection areas unless one of the following management practices can be met and is designated by the commissioner on the permit. Select at least one of the following Management Practices that applies: ❑ SOIL DISTURBANCE Within seven days before the pesticide is applied, the soil to be treated shall be disturbed by using a disc, harrow, rotary tiller, or other mechanical method. NOTE: This subsection does not apply to Bentazon, and does not apply to the area to be treated that is immediately adjacent to the crop row and that does not e.viceed 33 percent of the distance behveen crop ro►r's. ❑ PESTICIDE INCORPORATION Within 48 hours after the day the pesticide is applied, the pesticide shall be incorporated on at least 90 percent of the area treated; using a disc,harrow, rotary tiller, or other mechanical method, or by sprinkler or low flow irrigation, including chemigation if allowed by the label, using a minimum of '/o inch of irrigation water and a maximum of either one inch or the maximum amount of irrigation water specified on the label, at application rates that do not cause surface water runoff from the treated property or to wells on the treated property. N07E: This subsection does not apply to Bealazon and does not apply to the area treated with other pesticides listed in section 6800(a) that is immediately adjacent to the crop row and that does not exceed 33 percent of the distance behveen crop rows. BAND TREATMENT The pesticide shall be applied as a band treatment immediately adjacent to the crop row so that not more than 33 percent of the distance between rows is treated. ❑ TIMING OF APPLICATION The pesticide shall be applied between April i and July 31. ❑ RETENTION OF RUNOFF ON FIELD For six months following the application, the field shall be designed, by beaus, levees, or nondraining circulation systems, to retain all irrigation runoff and all precipitation on, and drainage through, the field. The retention area on the field shall not have a percolation rate of more than 0.2 inches per hour(5 inches per 24 hours). ❑ RETENTION OF RUNOFF iN A HOLDING AREA OFF THE FIELD For six months following the application, all nunoff shall be charuneled to a holding area off the application site, under the control of the property operator, that is designed to retain all irrigation runoff and all precipitation on, and drainage through, the treated field and all other areas draining into that holding area.The holding area shall not have a percolation rate of more than 0.2 inches per hour(5 inches per 24 hours) ❑ RUNOFF ONTO A FALLOW FIELD For six months following application, runoff shall be managed so that it runs off onto an adjacent unenclosed fallow field at least 300 feet long that is not irrigated for six months after application,with full consideration of any plant back restrictions. ALTERNATIVE 1IPage