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Home My WebLink AboutNC0038377_Table 12-5 Saprolite GW Results_20150902TABLE 12-5 RISK SCREENING TABLE: SAPROLITE GROUNDWATER DATA MAYO STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, ROXBORO, NC Water Spec Ferrous Aluminum Antimony Arsenic Barium Beryllium gi- Boron Cadmium Calcium Carbonate Chromium Cobalt Copper Iron Analytical Parameter Redox Assignment pH Temp DO ORP Eh Turbidity Alkalinity carbonate Chloride Cr(III)/Cr(VI) Level Cond Iron Alkalinity Alkalinity DIS TOT DIS TOT DIS TOT DIS TOT DIS TOT DIS TOT DIS TOT TOT DIS TOT DIS TOT DIS TOT DIS TOT Reporting Units None S.U. ft De C 9 umhos cm m /I 9 mV mV NTU m /I 9 m /I 9 ug/I ug/I u /I 9 ug/I u /I 9 u /I 9 u /I 9 u /I 9 u /I 9 u /I 9 m /I 9 ug/I ug/I u /1 9 u /I 9 m /I 9 m /I 9 m /I 9 u /I 9 u /I 9 u /I 9 u /I 9 m /I 9 m /I 9 ug/I u /I 9 15A NCAC 02L Standard NE 6.5-8.5 NE NE NE NE NE NE NE NE NE NE NE NE 1* NE SO NE 700 NE 4* NE NE 700 NE 2 NE NE 250 NE 10 NE 1* NE 1 NE 300 Sample ID Field Parameters Analytical Results ColleSamctiopnleDate SAPROLITE ABMW-03S"06/17/2015 Anoxic 5.2 17.26 23 137 0.2 8 213 4.96 2.5 51 9 30 <1 <1 1.17 1.04 23 25 <1 <1 51 1070 1100 <1 <1 4.78 <10 6.9 <1 <1 3.96 3.98 <0.001 <0.001 2490 2630 DETECTIONS/SAMPLES --- --- --- --- --- --- --- --- --- --- --- 1/1 1/1 0/1 0/1 1/1 1/1 1/1 1/1 0/1 0/1 1/1 1/1 1/1 0/1 0/1 1/1 0/1 1/1 0/1 0/1 1/1 1/1 0/1 0/1 1/1 1/1 AVERAGE SAPROLITE GROUNDWATER CONCENTRATION --- --- --- --- --- --- --- --- --- --- --- 9 30 --- --- 1.17 1.04 23 25 --- --- 51 1,070 1,100 --- --- 4.78 --- 6.9 --- --- 3.96 3.98 --- --- 2,490 2,630 (DETECTIONS ONLY) LITE MAXIMUM SAPATER GROUNDWATEONC ENTRATION CONCENTRATION ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ --- 9 30 --- --- 1.17 1.04 23 25 --- --- 51 1,070 1,100 --- --- 4.78 --- 6.9 --- --- 3.96 3.98 --- --- 2,490 2,630 NUMBER OF SAPROLITE GROUNDWATER SAMPLES --- --- --- --- --- --- --- --- --- --- --- 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 1 0 0 0 1 EXCEEDING Detections/Samples --- --- --- --- --- --- --- --- --- --- --- 1 3/5 10/10 2/5 2/10 0/5 0/10 5/5 10/10 0/5 0/10 10/10 0/5 0/10 0/5 0/10 10/10 0/10 10/10 1/5 3/10 3/5 3/10 1/5 1/10 3/5 10/10 Average Background Concentrations (Detections Only) ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ 13 314 1.64 1.48 --- --- 29 50 --- --- 127 --- --- --- --- 31.8 --- 16 1.59 1.5 1.24 1.29 0.00772 0.0045 289 494 Maximum Concentration --- --- --- --- --- --- --- --- --- --- --- 16 641 1.66 1.63 --- --- 46 97 --- --- 259 --- --- --- --- 58.1 --- 30 1.59 1.73 1.41 1.41 0.00772 0.0045 485 907 Number of Backgroundwater Samples > SSA NCAC 2L Standard --- --- --- --- --- --- --- --- --- --- --- 0 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 0 0 0 8 Coal Ash COPC 15A NCAC 2L Standard Saprolite Groundwater > 15A NCAC 2L Standard Saprolite Groundwater COPC Notes 0 - Bold highlighted concentration indicates exceedance of the 15A NCAC 02L Appendix 2, April 1, 2013 -Indicates support/rationale for soil COPC attributable to coal ash. - Indicates constituent is not a soil COPC attributable to coal ash. ORP - Oxidation Reduction Potential DIS = Dissolved NE = Not established TOT = Total Temp = Temperature DO - Dissolved Oxygen Deg C = Degree Celsius mg/I - milligrams per liter mg-N/L = miligram nitrogen per liter --- = Not applicable < = concentration not detected at or above the reporting limit. NTU = nephelometric turbidity unit S.U. = Standard Unit ug/I - microgram per liter umhos/cm = micro mhos per centimeter Spec Cond = Specific Conductance ft = feet mV - millivolts * - Interim Maximum Allowable Concentrations (IMACs) of the 15A NCAC 02L Appendix 1, April, 1, 2013. No Yes No Yes No Yes No Yes No No No No Yes No No No No No No No No Yes No No No Yes No Yes Yes Yes Yes Yes Yes Yes' No No No Yes Yes Yes No Yes No No No No No No No No No No Yes No No No No No No No No Yes No No No Yes Note 1: If no 15A NCNA 2L Standard Note 2: Hexavalent Chromium concentration is less than EPA screening value for tapwater (0.035 mg/Q. See Table 10-3 (USEPA Regional Screening Levels [RSLs] rev., June 26. 2015). Prepared by: KDF Checked by: VTV P:\Duke Energy Progress. 1026\105. Mayo Ash Basin GW Assessment Plan\1.11 CSA Reporting\Tables\Draft Tables\Table 12-5 Saprolite GW Results.xlsx Page 1 of 2 TABLE 12-5 RISK SCREENING TABLE: SAPROLITE GROUNDWATER DATA MAYO STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC, ROXBORO, NC Lead Magnesium Manganese Mercury Molybdenum Nickel Nitrate Potassium Selenium Sodium Strontium Thallium Total Total Total Vanadium Zinc Analytical Parameter Methane Sulfate Sulfide Dissolved Organic Suspended (as N) Solids Carbon Solids DIS TOT TOT T DIS TOT DIS TOT DIS TOT TOT DIS TOT TOT DIS TOT DIS TOT DIS TOT IS TOT Reporting Units ug/I ug/I mg/I INE..' / ug/I ug/I ug/1 ug/I ug/I ug/I ug/I mg-N/L mg/I ug/I ug/I mg/I mg/I mg/I mg/I mg/I ug/I ug/I mg/I mg/I mg/I ug/I ug/I mg/I mg/I ISA NCAC 02L Standard NE 1s NE NE 1 NE NE NE NE 100 10 NE NE 20 NE NE NE 250 NE NE 0.2* 500 NE NE NE 0.3* NE 1 Sample ID Sample Analytical Results Collection Date SAPROLITE ABMW-03S") 1 06/17/2015 <1 <1 0.695 463 478 <0.05 <0.05 38 <1 <1 1.05 <1 <0.01 0.605 <1 <1 19.4 0.058 0.059 <0.1 <0.1 <0.2 <0.2 110 1 <5 <0.3 <0.3 0.008 0.007 DETECTIONS/SAMPLES 0/1 0/1 1/1 1/1 1/1 0/1 0/1 1/1 0/1 0/1 1/1 0/1 0/1 1/1 0/1 0/1 1/1 1/1 1/1 0/1 0/1 0/1 0/1 1/1 1/1 0/1 0/1 0/1 1/1 1/1 AVERAGE SAPROLITE GROUNDWATER CONCENTRATION --- --- 1 463 478 --- --- 38 --- --- 1.05 --- --- 0.605 --- --- 19.4 0.058 0.059 --- --- --- --- 110 1 --- --- --- 0 0 (DETECTIONS ONLY) MAXIMUM SAPROLITE GROUNDWATER CONCENTRATION --- --- 1 463 478 --- --- 38 --- --- 1.05 --- --- 0.605 --- --- 19.4 0.058 0.059 --- --- --- --- 110 1 NUMBER OF SAPROLITE GROUNDWATER SAMPLES 0 0 0 0L 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 U 0 0 0 0 0 0 0 0 EXCEEDING Detections/Samples 0/5 0/10 10/10 5/5 10/10 0/5 2/10 0/5 4/5 4/10 3/5 3/5 4/7 10/10 0/5 0/10 10/10 5/5 5/5 10/10 0/5 0/5 1/10 10/10 5/5 7/10 4/5 7/10 5/10 8/10 Average Background Concentrations (Detections Only) --- 7.65 499 295 --- 0.06 --- 5.95 5.88 1.69 2.35 0.44 3.4 --- --- 27.3 0.141 0.14 12.7 --- --- 0.323 231 1.1 9 1.16 2.51 0.018 0.025 Maximum Concentration --- --- 15.5 954 894 --- 0.06 --- 14.6 14 1.91 3.09 1 8.66 --- --- 50.3 0.225 0.21 83 --- --- 0.323 380 2 17 2.39 5.88 0.056 0.067 Number of Backgroundwater Samples > 15A NCAC 2L Standard 0 0 0 0 8 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 7 0 0 Coal Ash COP( 15A NCAC 2L Standarr Saprolite Groundwater > NCAC 21 Saprolite Groundwater COP( No No No Yes No No No No No No No No No No No No No No No No No Yes Yes No No No Yes No No Yes Yes Yes Yes dN Yes No No No No No No Yes No No No No No No No No No No No No No No No No No No No No No No I No I No No Prepared by: KDF Checked by: VTV Notes 0 - Bold highlighted concentration indicates exceedance of the 15A NCAC 02L Appendix 2, April 1, 2013 0 -Indicates support/rationale for soil COPC attributable to coal ash. - Indicates constituent is not a soil COPC attributable to coal ash. ORP = Oxidation Reduction Potential DIS = Dissolved NE = Not established Note 1: If no 15A NCNA 2L Standard TOT = Total NTU = nephelometric turbidity unit Note 2: Hexavalent Chromium concentration is less than EPA screening value for tapwater (0.035 mg/Q. See Table 10-3 (USEPA Regional Screening Levels [RSLs] rev., ]une 26. 2015). Temp = Temperature DO = Dissolved Oxygen Deg C = Degree Celsius mg/I = milligrams per liter S.U. = Standard Unit ug/I = microgram per liter umhos/cm = micro mhos per centimeter Spec Cord = Specific Conductance mg-N/L = miligram nitrogen per liter ft = feet --- = Not applicable mV = millivolts < = concentration not detected at or above the reporting limit. * - Interim Maximum Allowable Concentrations (IMACs) of the 15A NCAC 02L Appendix 1, April, 1, 2013. P:\Duke Energy Progress. 1026\105. Mayo Ash Basin GW Assessment Plan\1.11 CSA Reporting\Tables\Draft Tables\Table 12-5 Saprolite GW Results.xlsx Page 2 of 2