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Thiobencarb, Continued <br />When water is contained within a tailwater recovery system, ponded on fallow land, <br />or contained in other systems appropriate for preventing discharge, the system may <br />discharge 19 days following the last application of thiobencarb within the system <br />unless: <br />(a) The system is under the control of one permittee, then water may be discharged <br />fiom the application site in a manner consistent with product labeling (14 -day <br />water -hold period). <br />(b) The system includes drainage from more than one permittee, then water must be <br />retained on the site of application for six days before discharged from the <br />application site into the system. <br />(c) Water is on fields within the bounds of areas that discharge negligible amounts of <br />rice field drainage into perennial streams until fields are drained for harvest. <br />Water -hold may be reduced to six days, if the commissioner evaluates such sites <br />and verifies the hydrologic isolation of the fields. <br />III. All areas, fields treated with Abolish® 8EC: <br />A. Except as listed below, all water on treated fields must be retained on the treated fields <br />for at least 19 days following application. When drainage begins, water discharge must <br />be released at a volume not to exceed two inches of water over a drain box weir for an <br />additional seven days. Unregulated discharges from these fields may begin after 26 days. <br />1. For water contained within a tailwater recovery system, ponded on fallow land, or <br />contained in other systems appropriate for preventing discharge, the system may <br />discharge 19 days following the last application within the system unless: <br />(a) The system is under the control of one permittee, then water may be discharged <br />from the application site in a manner consistent with product labeling (14 -day <br />water -hold period). <br />(b) The system includes drainage from more than one permittee, then water must be <br />retained on the site of application for six days before discharged from the <br />application site into the system. <br />(c) Water is on fields within the bounds of areas that discharge negligible amounts of <br />rice field drainage into perennial streams until fields are drained for harvest, then <br />water -hold may be reduced to six days if the commissioner evaluates such sites <br />and verifies the hydrologic isolation of the fields. <br />D-19 <br />(Rev. 12-14) <br />Continued on next page <br />