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Home My WebLink AboutDERR-2024-007841Kennecott South Facilities Kennecott South Facilities Groundwater RemediationGroundwater Remediation ANNUAL PROGRESS REPORT 2005ANNUAL PROGRESS REPORT 2005 Kelly Payne, Kennecott Utah CopperKelly Payne, Kennecott Utah Copper August 2, 2006August 2, 2006 TonightTonight’’s Discussions Discussion Zone A Water Quality MonitoringZone A Water Quality Monitoring ––SulfateSulfate ––AluminumAluminum Water Level MonitoringWater Level Monitoring Subsidence MonitoringSubsidence Monitoring Annual Groundwater Annual Groundwater ExtractionExtraction 0 1000 2000 3000 4000 5000 6000 7000 2001 2002 2003 2004 2005 Ac r e - F e e t P e r Y e a r Acid Plume Zone A Sulfate Plume 2005 Sulfate Map2005 Sulfate Map Sulfate: Plume InteriorSulfate: Plume Interior Continued decreases in sulfate Continued decreases in sulfate concentrationsconcentrations Continued contraction of 20,000 and Continued contraction of 20,000 and 10,000 mg/l isoconcentration contours10,000 mg/l isoconcentration contours Some expansion of 5,000 mg/l Some expansion of 5,000 mg/l isoconcentration contour on eastisoconcentration contour on east <Plot 1146><Plot 1146> 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 S O 42- (m g / L ) 0 5000 10000 15000 20000 25000 30000 35000 40000 45000 50000 ECG1124A ECG1124B ECG1124C ECG1146 0 100 200 300 400 500 600 700 800 900 1000 1100 1200 A B C E Sulfate: KUCC Deep Well Sulfate: KUCC Deep Well FieldField Extraction well sulfate essentially Extraction well sulfate essentially constantconstant Steady to increasing sulfate Steady to increasing sulfate concentrations adjacent to extraction concentrations adjacent to extraction wellswells Steady to decreasing sulfate Steady to decreasing sulfate concentrations in surrounding wellsconcentrations in surrounding wells Southeast MarginSoutheast Margin Sulfate concentrations increasing in Sulfate concentrations increasing in wells adjacent to plume interiorwells adjacent to plume interior Wells on outer margin have essentially Wells on outer margin have essentially steady sulfate concentrationssteady sulfate concentrations ModellingModelling suggests some water with suggests some water with elevated sulfate may not be captured elevated sulfate may not be captured by existing barrier well networkby existing barrier well network <Plot><Plot> 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 S O 42- (m g / L ) 0 1000 2000 3000 4000 5000 BSG1133A BSG1133B BSG1133C 0 100 200 300 400 500 600 700 800 900 1000 1100 1200 A B C <Plot><Plot> 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 S O 42- (m g / L ) 0 500 1000 1500 2000 2500 3000 BSG1132A BSG1132B BSG1132C 0 100 200 300 400 500 600 700 800 900 1000 1100 1200 A B C Southeast Margin Southeast Margin ResponseResponse Better understandingBetter understanding ––GeophysicsGeophysics ––Additional Monitoring WellsAdditional Monitoring Wells ––Update flow and transport modelsUpdate flow and transport models Possible MitigationPossible Mitigation ––New acid wellNew acid well ––New barrier wellNew barrier well ––Natural AttenuationNatural Attenuation Sulfate: West Jordan Well Sulfate: West Jordan Well FieldField Steady to decreasing sulfate Steady to decreasing sulfate concentrations in monitor wellsconcentrations in monitor wells Overall concentration in West Jordan Overall concentration in West Jordan Production well W363 appears to be Production well W363 appears to be decreasingdecreasing <Plot><Plot> 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 S O 42- (m g / L ) 0 200 400 600 800 1000 1200 WJG1169A WJG1169B WJG1169C 0 100 200 300 400 500 600 700 800 900 1000 1100 1200 A B C <Plot><Plot> 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 S O 42- (m g / L ) 0 100 200 300 400 500 600 WJG1170A WJG1170B WJG1170C 0 100 200 300 400 500 600 700 800 900 1000 1100 1200 A B C <Plot><Plot> 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 S O 42- (m g / L ) 0 100 200 300 400 500 600 700 WJG1154A WJG1154B WJG1154C 0 100 200 300 400 500 600 700 800 900 1000 1100 1200 A B C <Plot><Plot> 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 S O 42- (m g / L ) 0 50 100 150 200 W363 0 100 200 300 400 500 600 700 800 900 1000 1100 1200 AluminumAluminum Overall decrease in aluminum Overall decrease in aluminum concentration in core of plumeconcentration in core of plume Aluminum mass balance calculations Aluminum mass balance calculations indicate substantial progressindicate substantial progress Aluminum Mass RemovalAluminum Mass Removal Modeled Mass and Volume EstimatesModeled Mass and Volume Estimates Year Soil Volume (cubic feet) Annual change Chemical Mass* (kg) Annual change 1996 13,166,000,000 20,293,000 1997 13,249,000,000 0.6% 21,324,000 5.1% 1998 13,931,000,000 5.1% 21,643,000 1.5% 1999 14,285,000,000 2.5% 19,995,000 -7.6% 2000 13,774,000,000 -3.6% 18,018,000 -9.9% 2001 13,753,000,000 -0.2% 17,157,000 -4.8% 2002 13,935,000,000 1.3% 14,097,000 -18% 2003 13,194,000,000 -5.3% 12,149,000 -14% 2004 12,867,000,000 -2.5% 10,392,000 -14% 2005 12,444,000,000 -3.3% 8,810,000 -15% Total -722,000,000 -5.5% -11,483,000 -57% ¾¾Pumping data indicate 12.5 million kg aluminum Pumping data indicate 12.5 million kg aluminum removed 1996removed 1996 --20052005 Aluminum Mass RemovalAluminum Mass Removal -2,000,000 0 2,000,000 4,000,000 6,000,000 8,000,000 10,000,000 12,000,000 14,000,000 16,000,000 18,000,000 20,000,000 22,000,000 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 Al M a s s ( k g ) Al Removed by Extraction Wells Cumulative Decrease in Al Mass in Plume Total Dissolved Al Mass in Plume SubsidenceSubsidence 0.066---4944.0134943.947---1/4 Section 13/14 0.095---5205.4285205.333---1973 West 0.0940.0465342.095341.9965341.95K105 0.0220.0055078.0325078.015078.004BSG1180 0.103-0.154968.1194968.0164968.166WJG1170 0.0690.0134997.3444997.2754997.262BFG1156A 0.075-0.0414941.6244941.5494941.591BSG1137 0.107-0.0165251.0765250.9695250.985ECG1124 0.075-0.0015318.5935318.5185318.519ECG1116 4/5/05 Survey 2004-05 Difference (ft) 2002-04 Difference (ft) 3/11/04 Survey 12/19/02 SurveySurvey Site Subsidence Survey Data (Elevation Feet AMSL)