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<br />., <br /> <br />NPDES Permit No. CO-0042 161 <br />SalinitY Control Study <br /> <br />TwentymiIe Coal Company <br /> <br />I-'" <br />..... <br />.,... <br />01 <br /> <br />TABLE OF CONTENTS <br />(Continued) <br /> <br />~ <br /> <br />TABLES <br /> <br />I Monthly Flows, Salt Concentration and Loading <br /> <br />Fish Creek and Outfall......,.... ........... ......... .................. ................9 <br />2 $illt Loading Evaluation - Baseline Conditions...................................,.. 12 <br />3 Salt Loading Evaluation - Option 1.......... .....................,........ ........... 18 <br />4 Salt Loading Evaluation - Option 2........,...............,..........................21 <br />5 Salt Loading Evaluation - Option 3.....,....,....,.................,..,.............. 24 <br />6 Capital and Operating Costs for Option 1 ........................................... 27 <br />7 <tapital and Operating Costs for Option 2 ........................................... 29 <br />8 <tapital and Operating Costs for Option 3 ........................................... 31 <br /> <br />FIGURES <br /> <br />1 General Location Map .....................,...................,...........,.......................,..2 <br />2 S!:hematic of Monitoring and Discharge Points, Foidel Creek Mine ...............;.....';. 3 <br />, 3 Mean Monthly Flow Rate - Upstream Surface Water Site 16, Fish Creek ......;.;.......4 <br />4 Meari Monthly Flow Rate - Downstream Surface Water Site 1002, Fish CreeL........ 5 <br />5 Mean Monthly Field Conductivity - Upstream Surface Water Site 16, <br /> <br />. Fish Creek ............. ..,.................................... ......... ........, ...... ......",....,,6 <br />6 Mean Monthly Field Conductivity - Downstream Surface Water Site 1002, <br /> <br />'Fish Creek....... ..... ................................. ,...... ........... ....... .............., ...'.. 7 <br /> <br />Map I D~ignated Locations, Hydrologic Monitoring Program....,.......................... Pocket <br /> <br />APPENDICES <br /> <br /> <br />APPENDIX I Relationships Between Specific Conductance and IDS at Monitoring Stations <br /> <br />APPENDIX n Salt Load Analysis at Monitoring Stations <br /> <br />AHA Filename: l4SALCNt.DOC <br /> <br />Page ii <br /> <br />2,47 PM 09129/95 <br /> <br />