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ERRATA for "Pharmaceuticals, Hormones, and Other Organic Wastewater Contaminants in U.S. Streams, 1999-2000: A National Reconnaissance"; Environmental Science and Technology, v. 36, no. 6, pages 1202-1211:

Shortly after the publication of our stream reconnaissance study, it was discovered that select concentrations for 17α-ethynyl estradiol (EE2) and mestranol, which had been rejected as having potential interferences, were not corrected in the final published database. Seven concentrations of EE2 (ranging from 0.023 to 0.831 micrograms per liter [µg/L]) and four concentrations of mestranol (ranging from 0.034 to 0.197 µg/L) were erroneously published and should have been reported as nondetections. In the initial report, the frequency of detection, maximum concentration, and median detectable concentration for EE2 were reported as 15.7 percent, 0.831 µg/L, and 0.073 µg/L, respectively (Table 1, p. 1205). Similarly, the frequency of detection, maximum concentration, and median detectable concentration for mestranol were reported as 10.0 percent, 0.407 µg/L, and 0.074 µg/L, respectively (Table 1, p. 1205). The corrected frequency of detection, maximum concentration, and median detectable concentration are 5.7 percent, 0.273 µg/L, and 0.094 µg/L respectively for EE2, and 4.3 percent, 0.407 µg/L and 0.017 µg/L respectively for mestranol. The frequency of detection of reproductive hormones, reported as 40 percent in the initial report (Figure 4A, p. 1209), has been corrected to 37 percent. The percent of total measured organic wastewater contaminants, by general use category, reported as 0.88 percent for reproductive hormones (Figure 4B, p. 1209) in the initial report has been corrected to 0.69 percent.

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