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Home My WebLink AboutNC0024406_BCSS_Appendix M_20191231APPENDIX M - SUSTAINABILITY CALCULATIONS REMEDIAL ALTERNATIVES - INPUTS CORRECTIVE ACTION PLAN UPDATE BELEWS CREEK STEAM STATION DUKE ENERGY CAROLINAS, LLC, BELEWS CREEK, 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 10 10 10 Average depth of MWs (ft. bgs) 67 67 67 Average screen length of MWs (ft.) 10 10 10 Casing material Sch 80 PVC Sch 80 PVC Sch 80 PVC Well diameter 6 6 6 Borehole diameter 8 8 8 Extraction Wells Number of Extraction Wells 113 113 Average depth (ft. bgs) 121 121 Average screen length (ft.) 15 15 Total flow (gpm) 90 90 Casing material Sch 80 PVC Sch 80 PVC Well diameter 6 6 Borehole diameter 8 8 Horizontal Wells Number of Horizontal Wells 1 Length of Each Horizontal Well (ft.) 900 Total flow (gpm) 110 Casing material Sch 80 PVC Well diameter 6 Borehole diameter 8 Clean Water Infiltration Wells Number of Infiltration Wells 47 Average depth (ft. bgs) 141 Average screen length (ft.) 15 Total flow (gpm) 56 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 M - SUSTAINABILITY CALCULATIONS REMEDIAL ALTERNATIVES - INPUTS CORRECTIVE ACTION PLAN UPDATE BELEWS CREEK STEAM STATION DUKE ENERGY CAROLINAS, LLC, BELEWS CREEK, 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 7000 18000 Pipe material Sch 80 HDPE Sch 80 HDPE Pipe diameter 6 6 Number of conveyance pumps 4 4 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 36 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 M - SUSTAINABILITY CALCULATIONS REMEDIAL ALTERNATIVES - SUSTAINABILITY CORRECTIVE ACTION PLAN UPDATE BELEWS CREEK STEAM STATION DUKE ENERGY CAROLINAS, LLC, BELEWS CREEK, NC Remedial Alternative 1 - Groundwater Remediation by MNA Activities CO2 Emissions Percent Total Onsite NOx Emissions Percent Total Onsite SO. Emissions Percent Total Onsite PMld Emissions 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 40.79 76.12 NA - NA - NA - 1.7E-02 17.4 2.7E-02 72.8 3.8E-03 35.8 1.1E+04 NA 98.55 Transportation -Personnel 4.93 9.21 NA - NA - NA - 1.1E-02 10.6 1.0E-03 2.8 1.6E-04 1.5 6.5E+01 NA 0.6 Transportation-Equip/materials 0.49 0.92 NA - NA - NA - 1.5E-04 0.2 2.7E-06 0.0 1.4E-05 0.1 6.4E+00 NA 0.1 Equipment Use and Misc 7.10 13.25 6.8E-02 100.0 6.9E-03 100.0 6.1E-03 100.0 7.2E-02 71.7 9.0E-03 24.4 6.7E-03 62.6 8.6E+01 0.0E+00 0.8 Residual Handling 0.27 0.51 0.0E+00 - 0.0E+00 - 0.0E+00 - 8.8E-05 0.1 3.6E-06 0.0 7.2E-06 0.1 1 3.8E+00 NA 0.0 Total 53.59 100 6.79E-02 100.0 6.93E-03 100 6.11E-03 100 1.00E-01 100 3.67E-02 100 1.07E-02 100 1 1.11E+04 0.00E+00 1 100 Remedial Alternative 2 - Groundwater Remediation by Extraction Activities COz Emissions Percent Total Onsite NOx Emissions Percent Total Onsite SO. Emissions Percent Total Onsite Emissions percent Total Total NOx Emissions Percent Total Total SO. Emissions Percent Total Total PMlo Emissions Percent Total Total Energy Total Energy percent Total metric ton % metric ton % metric ton % metric ton % metric ton % metric ton % metric ton % MMBTU MWH % Material Productions 1,414.27 2.90 NA - NA - NA - 3.4E+00 1.9 2.2E+00 1.4 7.8E-01 4.0 2.5E+06 NA 87.42 Transportation -Personnel 25.02 0.05 NA - NA - NA - 1.8E-02 0.0 1.3E-03 0.0 1.7E-03 0.0 3.2E+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 47,358.03 97.05 1.5E+00 100.0 1.5E-01 100.0 1.3E-01 100.0 1.7E+02 98.0 1.6E+02 98.6 1.8E+01 95.9 3.6E+05 6.1E-01 12.6 Residual Handling 1 0.27 1 0.00 1 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 1 0.0 Total 1 48,798.57 1 100 1 1.45E+00 100.0 1 1.49E-01 100 1 1.31E-01 100 1 1.77E+02 100 1.63E+02 100 1.92E+01 1 100 2.84E+06 6.05E-01 1 100 Remedial Alternative 3 - Groundwater Remediation by Clean Water Infiltration and Extraction Activities CO2 Emissions Percent Total Onsite NOx Emissions Percent Total Onsite SO. Emissions Percent Total Onsite PMld Emissions 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 3,000.91 18.22 NA - NA - NA - 8.5E+00 11.3 5.2E+00 13.6 1.9E+00 12.2 6.2E+06 NA 98.26 Transportation -Personnel 56.80 0.34 NA - NA - NA - 3.0E-02 0.0 1.7E-03 0.0 4.1E-03 0.0 7.2E+02 NA 0.0 Transportation-Equip/materials 0.98 0.01 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 13,411.01 81.43 3.3E+01 100.0 3.4E+00 100.0 3.0E+00 100.0 6.7E+01 88.7 3.3E+01 86.4 1.4E+01 87.8 1.1E+05 6.2E-01 1.7 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 16,469.98 100 3.30E+01 100.0 3.37E+00 100 2.97E+00 100 7.55E+01 100 3.81E+01 100 1.58E+01 100 6.26E+06 6.15E-01 100 Notes: CO, - 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) PM,o - Airborne emissions of particulate matter that is 10 micrometers or less in diameter Prepared By: GTC Checked By: CBC Page 1 of 1