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Springs, Colorado. Prior to June, 1986 some of the water quality testing was performed by the <br />Colorado Yampa Coal Company laboratory. Two sites are monitored for flow by the US <br />t Geologic Survey (USGS). Until the 1989 Water Year the USGS also collected and analyzed the <br />water samples for the two sites. Beginning the 1989 Water Year Cyprus collected the samples <br />and ACZ laboratories analyzed the samples. Unless otherwise indicated all references to " 1990" <br />in this report to refer to Water Year 1990. <br />-2- <br />