Errata

In the article “Determining GAC Bed Life” by Thomas E.T. Gillogly et al in the August 1999 Journal, some information in the figures was incorrect. In Figure 1, the title in the y axis should have read ng/L instead of mg/L. In the Figure 8 legend, the symbols were inadvertently switched. In Figure 10, the scale on the x axis should have read between “0 and 1 year” instead of “0 and 5 years.”