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OqOW <br /> <br />} <br />as a precaution, swimmers should consider waiting for <br />4 hours before entering a treated pond or lake. <br />Q. What is the likelihood that stocked fish might <br />accumulate rotenone and be unfit for consumption? <br />A. Re-stocking would not be done until the rotenone <br />had degraded to non-toxic levels. Since stocked fish <br />are small, two other factors would also prevent <br />residue buildups. First, the fish would grow rapidly; as <br />a result, there would be a great dilution of residue <br />levels due to increases in the body mass. Secondly, <br />because of the 18 to 30 months required for the fish <br />to reach catchable size, there will be a long period <br />during which any residues would be excreted. <br />Q. Is it safe for livestock to drink from rotenone- <br />treated ponds or lakes? <br />A. Rotenone was used for many years to control grubs in <br />the backs of dairy and beef cattle. EPA has stated <br />that there is no need to restrict livestock consump- <br />tion of treated waters. <br />Q. Can crops be irrigated with water from lakes or <br />streams treated with rotenone? <br />A. There is no basis for concern about using treated <br />water for irrigation according to EPA. Rotenone has <br />been used as a garden insecticide for many years. It <br />rapidly breaks down and leaves no residues that might <br />accumulate in crops. <br />Q. How is rotenone likely to affect invertebrates in <br />treated waters? <br />A. Rotenone is highly toxic to insects, so many indi- <br />viduals in populations of these species may be killed <br />by a fish control treatment. Zooplankton organisms <br />n <br />5 ? <br />r ? <br />y? <br />4r" o <br />as