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The monitoring is conducted by Cyprus Yampa Valley Coal Corporation <br />personnel. The water quality analyses sere performed by ACZ Laboratories <br />(Formerly Bookcliffs) of Steamboat Springs, Colorado. <br />Until the 1989 Water Year the USGS also collected and analyzed the water <br />samples for three sites. Beginning in the 1989 Water Year Cyprus collected <br />the samples and ACZ laboratories analyzed the samples. <br />- 2 - <br />