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Notes:
The results of our assessment indicated that no increase in direct toxicity would be expected outside of the mixing zone and there would be an increase in toxicity expected to occur in an area of about one-tenth of a square mile, which is about one-third of the size of the mixing zone calculated. That increase in toxicity would primarily be due to the increases in copper concentrations that Terry discussed. And these concentrations would be high enough to affect invertebrates, but not high enough to be expected to affect fish.