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Treated Water pH Control The alarm is set to a high (pH 8.8) and a low(pH 6.7) alarm which automatically makes a radio <br /> Station call after 20 minutes. During this 20 minute period, the system works in a self adjustment mode. <br /> This remote alarm triggers at the mill control room and on site radio channel #1. A second alarm is <br /> triggered at the 55 minute mark if the pH does not self-adjust, and discharge is terminated with <br /> the water being diverted to the Clearwater Pond. If the pH self-adjusts during the 55 minute <br /> period,the clock is reset and the system returns to self adjustment mode. Note that the decant risers on <br /> Mayflower Pond can be closed if necessary. <br />