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C�, ED <br /> NUCLA MINE M 1AR 10J987 <br /> MONTROSE COUNTY <br /> MINtu <br /> 1986 ANNUAL HYDROLOGY REPORT RECLAMATION DIVISION <br /> LIST OF FIGURES <br /> Figure No. Page <br /> 1 Hydrograph for Site SW-N1 18 <br /> 2 Trilinear Diagram for Surface Water Monitoring <br /> Sites SW-N1, SW-N2, SW-N3, SW-N6 and SW-N7 19 <br /> 3 TDS Concentration Versus Date for Site SW-N1 21 <br /> 4 Hydrograph for Site SW-N3 24 <br /> 5 Results of a Same-Day (July 10, 1986) Flow and <br /> Water Quality Analysis of Tuttle Draw and the <br /> West Return Ditch 25 <br /> 6 TDS Concentration Versus Date for Site SW-N3 27 <br /> 7 TDS Concentration Versus Flow for Site SW-N3 28 - <br /> 8 Hydrograph for Site SW-N7 43 <br /> 9 Hydrograph for Site SW-N6 . 46 <br /> 10 Hydrograph for Site NPDES 001 56 <br /> 11 Trilinear Diagram for NPDES 001 and NPDES 006 <br /> Discharge Points 57 <br /> 12 Trilinear Diagram for the Highwall Spring and <br /> Spoils Spring #1 61 <br /> 13 Hydrograph for Site NPDES 006 65 <br /> 14 General Well Construction Schematic for Dakota <br /> Coal and Dakota Coal Underburden Wells Drilled <br /> During 1986 70 <br /> 15 General Well Construction Schematic for <br /> Overburden and Alluvial Monitoring Wells <br /> Drilled During 1986 71 <br /> 16 General Well Construction Schematic for <br /> Composite (Overburden, Dakota Coal and <br /> Underburden) Wells Drilled in the Scraper <br /> Area During 1986 72 <br /> 16a General Well Completion Schematic for Spoils <br /> Monitoring Wells , Nucla Mine, Montrose County, (Revised <br /> Colorado 72a 03/06/87) <br /> vi Revised 03/06/87 <br />