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gulch below the retention ponds. There is no evidence that this
<br />contamination has migrated to Piceance Creek.
<br />REFERENCES
<br />Agapito Associates, 1999. Groundwater Hydrogeology and Water Quality
<br />Monitoring Program at the Yankee Gulch Project. Report prepared for American
<br />Soda L.L.P., February 1999, Grand Junction, Colorado.
<br />Cox, K.C, 1979. Experiences in Equipping a 96-Inch Diameter Shaft, and Mining
<br />Bulk Samples of Oil Shale, Dawsonite, and Nahcolite. Twelfth Oil Shale
<br />Symposium Proceedings, Colorado School of Mines, p. 179 - 183.
<br />Dale, R.H, and J.B. Weeks, 1978. Hydrologic Analysis of the U.S. Bureau of
<br />Mines' Underground Oil Shale Research-Facility Site, Piceance Creek Basin, Rio
<br />Blanes County, Colorado. U.S. Geological Survey Water Resources
<br />Investigations 78-28, 35 p.
<br />Ficke, J.H, J.B. Weeks, and F.A. Welder, 1974. Hydrologic Data from the
<br />Piceance Basin, Colorado. Colorado Water Resources Basic Data Release No.
<br />31, 246 p.
<br />Nielsen, 1997. Re-Entry, Deepening, Logging, Cementing of the Saline Zone
<br />and Completion of Core Hole 20-1 as a Monitoring Well plus the Drilling of 20-5
<br />and 20-9 Monitoring Wells for Water in the Upper Aquifer and the Alluvium.
<br />Letter Report to Bureau of Land Management, May 21, 1997.
<br />Prats, M, P.J. Closmann, A.T. Ireson, and G. Drinkard, 1977. Soluble-Salt
<br />Processes for In-Situ Recovery of Hydrocarbons from Oil Shale. Journal of
<br />Petroleum Technology, September 1977, p. 1078 - 1088.
<br />Robson, S.G., and G.J. Saulnier, Jr., 1981. Hydrogeochemistry and Simulated
<br />Solute Transport, Piceance Basin, Northwestern Colorado. U.S. Geological
<br />Survey Professional Paper 1196, 65 p.
<br />Saulnier, G.J., Jr., 1978. Genesis of the Saline Waters of the Green River
<br />Formation, Piceance Basin, Northwestern Colorado. Ph.D. Dissertation,
<br />University of Nevada, Reno, 120 p.
<br />Snyder, R.P. and S.S. Terry, 1977. Subsurface Geology in the Vicinity of Three
<br />Drill Holes in Piceance Creek Basin, Rio Blanco County, Colorado. U.S.
<br />Geological Survey Open File Report 77-271, 78 p.
<br />Sentember Z 1999 11
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