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Home My WebLink AboutNC0004979_Allen_Appendix L_20191231Corrective Action Plan Update December 2019 Duke Energy Carolinas, LLC - Allen Steam Station APPENDIX L SUSTAINABILITY CALCULATIONS SynTerra APPENDIX L - SUSTAINABILITY CALCULATIONS REMEDIAL ALTERNATIVES - INPUTS CORRECTIVE ACTION PLAN UPDATE ALLEN STEAM STATION - HORIZONTAL CLEAN WATER INFILTRATION WELL SCENARIO DUKE ENERGY CAROLINAS, LLC, BELMONT, NC Alternative Remedial Alternative 1 - Groundwater Remediation by MNA Remedial Alternative 2 - Groundwater Remediation by Extraction Remedial Alternative 3 - Groundwater Remediation by Clean Water Infiltration and Extraction New Monitoring Wells Number of MWs 5 5 Average depth of MWs (ft. bgs) 108 108 Average screen length of MWs (ft.) 15 15 Casing material Sch 80 PVC Sch 80 PVC Well diameter 6 6 Borehole diameter 8 8 Extraction Wells Number of Extraction Wells 81 81 Average depth (ft. bgs) 136 136 Average screen length (ft.) 15 15 Total flow (gpm) 905 905 Casing material Sch 80 PVC Sch 80 PVC Well diameter 6 6 Borehole diameter 8 8 Horizontal Wells Number of Horizontal Wells 22 Length of Each Horizontal Well (ft.) 401 Total flow (gpm) 157 Casing material Sch 80 PVC Well diameter 6 Borehole diameter 8 Clean Water Infiltration Wells Number of Clean Water Infiltration Wells 48 Average depth (ft. bgs) 100 Average screen length (ft.) 25 Total flow (gpm) 214 Casing material Sch 80 PVC Well diameter 6 Borehole diameter 8 Number of pumps 1 Infiltration Galleries Number of Infiltration Galleries Total area (acres) Total flow (gpm) Pipe material Pipe diameter Chemical Injection Wells Number of Injection Wells Average depth (ft. bgs) Average screen length (ft.) Total flow (gpm) Casing material Well diameter Borehole diameter Injection Pumps Tree Wells Total area (acres) Trenches Number of trenches Length (ft.) Width (ft.) De th ft. Page 1 of 2 APPENDIX L - SUSTAINABILITY CALCULATIONS REMEDIAL ALTERNATIVES - INPUTS CORRECTIVE ACTION PLAN UPDATE ALLEN STEAM STATION - HORIZONTAL CLEAN WATER INFILTRATION WELL SCENARIO DUKE ENERGY CAROLINAS, LLC, BELMONT, NC Alternative Remedial Alternative 1 - Groundwater Remediation by MNA Remedial Alternative 2 - Groundwater Remediation by Extraction Remedial Alternative 3 - Groundwater Remediation by Clean Water Infiltration and Extraction Conveyance Pipe Pipe length 15000 21000 Pipe material Sch 80 HDPE Sch 80 HDPE Pipe diameter 6 6 Number of conveyance pumps 9 5 Permeable Reactive Barriers Number of PRBs Fill Material Length (ft.) Width (ft.) Depth (ft.) Removal of Waste Materials Tons of waste Waste Profile Treatment Media Media Pounds Well Abandonment Number of wells Average well depth Well diameter Fill Material Laboratory Analysis $ of laboratory analysis spent Length of Active Remediation Years of Active Remediation 0 500 8 Notes: ft. - foot gpm - gallon per minute Sch - schedule HDPE - high density polyethylene bgs - below ground surface PVC - polyvinyl chloride PRB - permeable reactive barrier MW - monitoring wells MINA - monitored natural attenuation Prepared By: GTC Checked By: CBC Page 2 of 2 APPENDIX L - SUSTAINABILITY CALCULATIONS REMEDIAL ALTERNATIVES - SUSTAINABILITY CORRECTIVE ACTION PLAN UPDATE ALLEN STEAM STATION - HORIZONTAL CLEAN WATER INFILTRATION WELL SCENARIO DUKE ENERGY CAROLINAS, LLC, BELMONT, NC Remedial Alternative 1 - Groundwater Remediation by MNA Activities COZ Emissions Percent Total Onsite NOx Emissions Total Onsite SO. Emissions Percent Total OnsiPercent PM, MI Emissioons Percent Total Total NOx Emissions Percent Total Total SO. Emissions Percent Total Total PM10 Emissions Percent Total Total Energy Used Total Energy Used Percent Total metric ton % metric ton % metric ton % metric ton % metric ton % metric ton % metric ton % MMBTU MWH Material Productions 0.00 - NA - NA - NA - 0.0E+00 - 0.0E+00 - 0.0E+00 - 0.0E+00 NA - Transportation -Personnel 4.57 100.00 NA NA NA 1.7E-03 100.0 6.0E-05 100.0 3.4E-04 100.0 5.8E+01 NA 100.0 Transportation-Equip/materials 0.00 - NA - NA - NA - 0.0E+00 - 0.0E+00 - 0.0E+00 - 0.0E+00 NA - Equipment Use and Misc 0.00 0.0E+00 0.0E+00 0.0E+00 0.0E+00 0.0E+00 0.0E+00 0.0E+00 0.0E+00 Residual Handling 0.00 - 0.0E+00 - 0.0E+00 - 0.0E+00 - 0.0E+00 - 0.0E+00 - 0.0E+00 - 0.0E+00 NA - Total 4.57 100 0.00E+00 0.0 0.00E+00 0 0.00E+00 0 1.69E-03 100 5.96E-05 100 3.43E-04 100 5.75E+01 0.00E+00 100 Remedial Alternative 2 - Groundwater Remediation by Extraction Activities Emissions Percent Total OnsitCO2 NOx NOx Emissions Percent Total Onsite SOx Emissions Percent Total PM,Onsi PM, Emissions Percent Total Total NOx Emissions Percent Total Total SO, Emissions Percent Total Total PMIo Emissions Percent Total Total Energy Used Total Energy Used Percent Total metric ton % metric ton % metric ton % metric ton % metric ton % metric ton % metric ton % MMBTU MWH % Material Productions 2,230.21 0.46 NA - NA - NA - 6.9E+00 0.4 4.1E+00 0.2 1.6E+00 0.8 5.0E+06 NA 57.77 Transportation -Personnel 85.16 0.02 NA - NA - NA - 4.0E-02 0.0 2.1E-03 0.0 6.2E-03 0.0 1.1E+03 NA 0.0 Transportation-Equip/materials 0.98 0.00 NA - NA - NA 3.1E-04 0.0 5.5E-06 0.0 2.7E-05 0.0 1.3E+01 NA 0.0 Equipment Use and Misc 484,156.06 99.52 9.1E+01 100.0 9.3E+00 100.0 8.2E+00 100.0 1.8E+03 99.6 1.6E+03 99.8 1.9E+02 99.2 3.7E+06 5.0E-01 42.2 Residual Handling 0.27 0.00 0.0E+00 0.0E+00 0.0E+00 8.8E-05 0.0 3.6E-06 0.0 7.2E-06 0.0 3.8E+00 NA 0.0 Total 486,472.68 100 9.06E+01 100.0 1 9.26E+00 100 1 8.16E+00 100 1 1.83E+03 100 1.63E+03 100 1.94E+02 100 8.72E+06 4.95E-01 100 Remedial Alternative 3 - Groundwater Remediation by Clean Water Infiltration and Extraction Activities Emissions Percent Total Onsite NOx Emissions Percent Total Onsite SO. Emissions Percent Total OnsiCO2 PM, PM, Emissions Percent Total Total NOx Emissions Percent Total Total SO. Emissions Percent Total Total PMld Emissions Percent Total Total Energy Used Total Energy Used Percent Total metric ton % metric ton % metric ton % metric ton % metric ton % metric ton % metric ton % MMBTU MWH Material Productions 3,460.62 13.20 NA - NA - NA - 1.0E+01 6.1 6.3E+00 11.8 2.3E+00 9.7 7.1E+06 NA 97.01 Transportation -Personnel 10.69 0.04 NA - NA - NA - 1.3E-02 0.0 1.1E-03 0.0 5.9E-04 0.0 1.4E+02 NA 0.0 Transportation-Equip/materials 0.98 0.00 NA - NA - NA - 3.1E-04 0.0 5.5E-06 0.0 2.7E-05 0.0 1.3E+01 NA 0.0 Equipment Use and Misc 22,738.35 86.75 1.1E+02 100.0 1.2E+01 100.0 1.0E+01 100.0 1.6E+02 93.9 4.7E+01 88.2 2.1E+01 90.3 2.2E+05 5.1E-01 3.0 Residual Handling 0.27 0.00 0.0E+00 1 - 0.0E+00 - I 0.0E+00 - I 8.8E-05 0.0 3.6E-06 0.0 7.2E-06 0.0 3.8E+00 NA 0.0 Total 26,210.91 100 1.14E+02 100.0 1.16E+01 100 1 1.03E+01 100 1 1.66E+02 100 5.37E+01 100 2.34E+01 100 7.30E+06 5.05E-01 100 Notes: CO2 - Airborne Emissions of carbon dioxide MMBTU - Million British Thermal Units NOX - Airborne Emissions of nitrogen oxides (combination of nitrogen monoxide and nitrogen dioxide) SOX - Airborne Emissions of sulfur oxides (combination of sulfur monoxide, sulfur dioxide, sulfur trioxide, and others) PM10 - Airborne Emissions of particulate matter that is 10 micrometers or less in diameter Prepared By: GTC Checked By: CBC Page 1 of 1 APPENDIX L - SUSTAINABILITY CALCULATIONS REMEDIAL ALTERNATIVES - INPUTS CORRECTIVE ACTION PLAN UPDATE ALLEN STEAM STATION - VERTICAL CLEAN WATER INFILTRATION WELL SCENARIO DUKE ENERGY CAROLINAS, LLC, BELMONT, NC Alternative Remedial Alternative 1 - Groundwater Remediation by MNA Remedial Alternative 2 - Groundwater Remediation by Extraction Remedial Alternative 3 - Groundwater Remediation by Clean Water Infiltration and Extraction New Monitoring Wells Number of MWs 5 5 Average depth of MWs (ft. bgs) 108 108 Average screen length of MWs (ft.) 15 15 Casing material Sch 80 PVC Sch 80 PVC Well diameter 6 6 Borehole diameter 8 8 Extraction Wells Number of Extraction Wells 81 81 Average depth (ft. bgs) 136 136 Average screen length (ft.) 15 15 Total flow (gpm) 888 888 Casing material Sch 80 PVC Sch 80 PVC Well diameter 6 6 Borehole diameter 8 8 Horizontal Wells Number of Horizontal Wells Length of Each Horizontal Well (ft.) Total flow (gpm) Casing material Well diameter Borehole diameter Clean Water Infiltration Wells Number of Clean Water Infiltration Wells 76 Average depth (ft. bgs) 93 Average screen length (ft.) 25 Total flow (gpm) 380 Casing material Sch 80 PVC Well diameter 6 Borehole diameter 8 Number of pumps 1 Infiltration Galleries Number of Infiltration Galleries Total area (acres) Total flow (gpm) Pipe material Pipe diameter Chemical Injection Wells Number of Injection Wells Average depth (ft. bgs) Average screen length (ft.) Total flow (gpm) Casing material Well diameter Borehole diameter Injection Pumps Tree Wells Total area (acres) Trenches Number of trenches Length Width (ft.) De th ft. Page 1 of 2 APPENDIX L - SUSTAINABILITY CALCULATIONS REMEDIAL ALTERNATIVES - INPUTS CORRECTIVE ACTION PLAN UPDATE ALLEN STEAM STATION - VERTICAL CLEAN WATER INFILTRATION WELL SCENARIO DUKE ENERGY CAROLINAS, LLC, BELMONT, NC Alternative Remedial Alternative 1 - Groundwater Remediation by MNA Remedial Alternative 2 - Groundwater Remediation by Extraction Remedial Alternative 3 - Groundwater Remediation by Clean Water Infiltration and Extraction Conveyance Pipe Pipe length 15000 21000 Pipe material Sch 80 HDPE Sch 80 HDPE Pipe diameter 6 6 Number of conveyance pumps 9 5 Permeable Reactive Barriers Number of PRBs Fill Material Length (ft.) Width (ft.) Depth (ft.) Removal of Waste Materials Tons of waste Waste Profile Treatment Media Media Pounds Well Abandonment Number of wells Average well depth Well diameter Fill Material Laboratory Analysis $ of laboratory analysis spent Length of Active Remediation Years of Active Remediation 0 500 8 Notes: ft. - foot gpm - gallon per minute Sch - schedule HDPE - high density polyethylene bgs - below ground surface PVC - polyvinyl chloride PRB - permeable reactive barrier MW - monitoring wells MINA - monitored natural attenuation Prepared By: GTC Checked By: CBC Page 2 of 2 APPENDIX L - SUSTAINABILITY CALCULATIONS REMEDIAL ALTERNATIVES - SUSTAINABILITY CORRECTIVE ACTION PLAN UPDATE ALLEN STEAM STATION - VERTICAL CLEAN WATER INFILTRATION WELL SCENARIO DUKE ENERGY CAROLINAS, LLC, BELMONT, NC Remedial Alternative 1 - Groundwater Remediation by MNA Activities CO2 Emissions Percent Total Onsite NOx Emissions percent Total Onsite SOx Emissions Percent Total Onsite PM10 Emissions percent Total Total NOx Emissions Percent Total Total SOx Emissions Percent Total Total PM10 Emissions Percent Total Total Energy Used Total Energy Used percent Total metric ton % metric ton % metric ton % metric ton % metric ton % metric ton % metric ton % MMBTU MWH Material Productions 0.00 - NA - NA - NA - 0.0E+00 - 0.0E+00 - 0.0E+00 - 0.0E+00 NA - Transportation -Personnel 4.57 100.00 NA NA NA 1.7E-03 100.0 6.0E-05 100.0 3.4E-04 100.0 5.8E+01 NA 100.0 Transportation-Equip/materials 0.00 - NA - NA - NA - 0.0E+00 - 0.0E+00 - 0.0E+00 - 0.0E+00 NA - Equipment Use and Misc 0.00 0.0E+00 0.0E+00 0.0E+00 0.0E+00 0.0E+00 0.0E+00 0.0E+00 0.0E+00 Residual Handling 0.00 - 0.0E+00 - 0.0E+00 - 0.0E+00 - 0.0E+00 - 0.0E+00 - 0.0E+00 - 0.0E+00 NA - Total 4.57 100 0.00E+00 0.0 0.00E+00 0 0.00E+00 0 1.69E-03 100 5.96E-05 100 3.43E-04 100 5.75E+01 0.00E+00 100 Remedial Alternative 2 - Groundwater Remediation by Extraction Activities CO2 Emissions Percent Total Onsite NOx Emissions Total Onsite SOx Emissions Percent Total Onspercent PM10 PM10 Emissions percent Total Total NOx Emissions Percent Total Total SOx Emissions Percent Total Total PM10 Emissions Percent Total Total Energy Used Total Energy Used Percent Total metric ton % metric ton % metric ton % metric ton % metric ton % metric ton % metric ton % MMBTU MWH Material Productions 2,230.21 0.47 NA - NA - NA - 6.9E+00 0.4 4.1E+00 0.3 1.6E+00 0.8 5.0E+06 NA 58.21 Transportation -Personnel 85.16 0.02 NA - NA - NA - 4.0E-02 0.0 2.1E-03 0.0 6.2E-03 0.0 1.1E+03 NA 0.0 Transportation-Equip/materials 0.98 0.00 NA - NA - NA 3.1E-04 0.0 5.5E-06 0.0 2.7E-05 0.0 1.3E+01 NA 0.0 Equipment Use and Misc 475,239.60 99.51 9.1E+01 100.0 9.3E+00 100.0 8.2E+00 100.0 1.8E+03 99.6 1.6E+03 99.7 1.9E+02 99.2 3.6E+06 5.0E-01 41.8 Residual Handling 0.27 0.00 0.0E+00 0.0E+00 0.0E+00 8.8E-05 0.0 3.6E-06 0.0 7.2E-06 0.0 3.8E+00 NA 0.0 Total 477,556.23 100 9.06E+01 100.0 1 9.26E+00 100 1 8.16E+00 100 1 1.80E+03 100 1.60E+03 100 1.90E+02 100 8.65E+06 4.95E-01 100 Remedial Alternative 3 - Groundwater Remediation by Clean Water Infiltration and Extraction Activities CO2 Emissions Percent Total Onsite NOx Emissions percent Total Onsite SOx Emissions Percent Total Onsite PM10 Emissions percent Total Total NOx Emissions Percent Total Total SOx Emissions Percent Total Total PM10 Emissions Percent Total Total Energy Used Total Energy Used percent Total metric ton % metric ton % metric ton % metric ton % metric ton % metric ton % metric ton % MMBTU MWH Material Productions 3,303.58 11.17 NA - NA - NA - 9.8E+00 5.0 5.8E+00 10.6 2.2E+00 7.1 7.1E+06 NA 96.54 Transportation -Personnel 10.73 0.04 NA - NA - NA - 1.3E-02 0.0 1.1E-03 0.0 5.9E-04 0.0 1.4E+02 NA 0.0 Transportation-Equip/materials 0.98 0.00 NA - NA - NA - 3.1E-04 0.0 5.5E-06 0.0 2.7E-05 0.0 1.3E+01 NA 0.0 Equipment Use and Misc 26,254.41 88.79 1.5E+02 100.0 1.5E+01 100.0 1.3E+01 100.0 1.9E+02 95.0 4.9E+01 89.4 2.9E+01 92.9 2.5E+05 5.1E-01 3.5 Residual Handling 0.27 0.00 0.0E+00 1 - 0.0E+00 - I 0.0E+00 - I 8.8E-05 0.0 3.6E-06 0.0 7.2E-06 0.0 3.8E+00 NA 0.0 Total 29,569.98 100 1.45E+02 100.0 1.48E+01 100 1 1.31E+01 100 1 1.97E+02 100 5.46E+01 100 3.10E+01 100 7.34E+06 5.05E-01 100 Notes: CO2 - Airborne emissions of carbon dioxide MMBTU - Million British Thermal Units NOX - Airborne emissions of nitrogen oxides (combination of nitrogen monoxide and nitrogen dioxide) SOX - Airborne emissions of sulfur oxides (combination of sulfur monoxide, sulfur dioxide, sulfur trioxide, and others) PM10 - Airborne emissions of particulate matter that is 10 micrometers or less in diameter Prepared By: GTC Checked By: CBC Page 1 of 1