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NUCLA MINE <br />MONTROSE COUNTY <br />1986 ANNUAL HYDROLOGY REPORT <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 Uersus 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 far 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 />I6a General Well Completion Schematic for Spoils <br /> Monitoring Wells, Nucla Mine, Montrose County, (Revised <br /> Colorado 72a 03/06/87) <br /> vi Rev ised 03/06/87 <br /> <br /> <br />