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<br />o Soil and Foundation Investigation for Proposed Railroad Spur <br />Alignment, Hayden Gulch Processing Facility <br />By: Chen and Associates <br />Date: December, 1977 <br />o Soil and Foundation Investigation, Hayden Gulch Processing <br />Facility <br />By: Chen and Associates <br />Date: November 28, 1978 <br /> <br />o Soil and Foundation Investigation for the Proposed Five <br />Earth Filled Embankments <br />By: Chen and Associates, Inc. <br />Date: July 28, 1978 <br />o Preliminary Baseline Ground Water Hydrology Study <br />By: Morrison-Knudsen <br />Date: June, 1980 <br />~• <br />