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Home My WebLink AboutNC0024406_Belews Creek CSA Update 2017 Appendix H_201710312017 Comprehensive Site Assessment Update October 2017 Belews Creek Steam Station APPENDIX H BACKGROUND DETERMINATION Belews Creek 2017 CSA PBTV Report HDR Background Determination Report SynTerra 2017 Comprehensive Site Assessment Update October 2017 Belews Creek Steam Station SynTerra BELEWS CREEK 2017 CSA PBTV REPORT ICIP synTerra PROPOSED BACKGROUND THRESHOLD VALUES FOR NATURALLY OCCURRING CONCENTRATIONS IN GROUNDWATER AND SOIL BELEWS CREEK STEAM STATION 3195 PINE HALL ROAD BELEWS CREEK,, NORTH CAROLINA 27009 OCTOBER 2017 PREPARED FOR: DUKE ENERGY CAROLINAS, LLC 410 S. WILMINGTON STREET RALEIGH, NORTH CAROLINA 27601 (' DUKE �' ENERGY.. Jess Gilmer Project Scientist Proposed Background Threshold Values For Naturally Occurring Concentrations in Groundwater and Soil October 2017 Belews Creek Steam Station SynTerra TABLE OF CONTENTS SECTION PAGE 1.0 INTRODUCTION.........................................................................................................1-1 2.0 BACKGROUND DATASETS....................................................................................2-1 2.1 Groundwater................................................................................................................. 2-1 2.1.1 Shallow Flow Layer................................................................................................ 2-2 2.1.2 Deep Flow Layer..................................................................................................... 2-2 2.1.3 Fractured Bedrock Flow Layer..............................................................................2-2 2.2 Soil...................................................................................................................................2-3 3.0 PRELIMINARY DATA ANALYSIS..........................................................................3-1 3.1 Descriptive Statistics.....................................................................................................3-1 3.2 Management of Non -Detect Data...............................................................................3-1 3.3 Graphical Analysis........................................................................................................3-2 3.4 Screening Datasets for Outliers...................................................................................3-2 3.5 Autocorrelation............................................................................................................. 3-3 3.6 Evaluation of Dataset Distribution.............................................................................3-3 4.0 PROPOSED PROVISIONAL BACKGROUND THRESHOLD VALUES ......... 4-1 5.0 REFERENCES................................................................................................................5-1 Page P:\Duke Energy Carolinas\ Statistics_CAMA\BTV Reports for CSAs\Belews Creek\ DRAFT\ Belews Creek_BTV Report Tex t_CSA2_FINAL. docx Proposed Background Threshold Values For Naturally Occurring Concentrations in Groundwater and Soil October 2017 Belews Creek Steam Station SynTerra LIST OF FIGURES Figure 1 Background Groundwater Sample Locations Figure 2 Background Soil Sample Locations Figure 3 Trending Concentrations Figure 4 Concentration Shift LIST OF TABLES Table 1 Chemical Parameters Analyzed in Groundwater and Soil Table 2 Background Groundwater Results through April 2017 Table 3 Unsaturated Background Soil Data Summary Table 4 Background Shallow Flow Zone Statistics Results Table 5 Background Deep Flow Zone Statistics Results Table 6 Background Bedrock Statistics Results Table 7 Background Soil Statistics Results Table 8 Groundwater Provisional Background Threshold Values Table 9 Provisional Background Threshold Values for Soil LIST OF APPENDICES Appendix A Box -And -Whisker and Q -Q Plots: Surficial Flow Zone Appendix B Box -And -Whisker and Q -Q Plots: Transition Zone Appendix C Box -And -Whisker and Q -Q Plots: Bedrock Appendix D Box -And -Whisker and Q -Q Plots: Soil Appendix E Outlier Test Results: Shallow Flow Zone (ProUCL Output) Appendix F Outlier Test Results: Deep Flow Zone (ProUCL Output) Appendix G Outlier Test Results: Fractured Bedrock (ProUCL Output) Appendix H Outlier Test Results: Soil (ProUCL Output) Appendix I GOF Test Results: Deep Flow Zone (ProUCL Output) Appendix J GOF Test Results: Fractured Bedrock (ProUCL Output) Appendix K GOF Test Results: Soil (ProUCL Output) Appendix L UTL Results: Deep Flow Zone (ProUCL and NCSS Output) Appendix M UTL Results: Fractured Bedrock (ProUCL and NCSS Output) Appendix N UTL Results: Soil (ProUCL and NCSS Output) Page ii P:\Duke Energy Carolinas\ Statistics—CAMA\ BTV Reports for CSAs\Belews Creek\DRAFT\Belews Creek_BTV Report Text_CSA2_FINAL. docx Proposed Background Threshold Values For Naturally Occurring Concentrations in Groundwater and Soil Belews Creek Steam Station LIST OF ACRONYMS CAMA Coal Ash Management Act CAP Corrective Action Plan CCR Coal Combustion Residuals CSA Comprehensive Site Assessment Report DWR Division of Water Resources GOF Goodness -of -Fit KM Kaplan -Meir NCAC North Carolina Administrative Code NCDEQ North Carolina Department of Environmental Quality NCDWQ North Carolina Division of Water Quality NTU Nephelometric Turbidity Units PBTV Provisional Background Threshold Value POG NC PSRG Protection of Groundwater PSRG Preliminary Soil Remediation Goals Q -Q Quantile -Quantile ROS Regression on Order Statistics SU Standard Units Site Belews Creek Steam Station USEPA United States Environmental Protection Agency UTL Upper Tolerance Limit October 2017 SynTerra Page iii P:\Duke Energy Carolinas\ Statistics_CAMA\BTV Reports for CSAs\Belews Creek\DRAFT\Belews Creek_BTV Report Text_CSA2_FINAL. docx Proposed Background Threshold Values For Naturally Occurring Concentrations in Groundwater and Soil October 2017 Belews Creek Steam Station 1.0 INTRODUCTION SynTerra Provisional background threshold values (PBTVs) for naturally occurring concentrations in groundwater and soil at the Belews Creek Steam Station (BCSS) or Site and surrounding areas in Forsyth County, North Carolina, are presented in this report. These PBTVs are necessary for comparison to data generated during the Comprehensive Site Assessment (CSA) of the BCSS site. North Carolina General Assembly Session Law 2014-122, the Coal Ash Management Act (CAMA) of 2014, requires submittal of a Comprehensive Site Assessment Report for each facility that has a coal combustion residuals (CCR) impoundment. Companies that own multiple facilities with CCR impoundments must submit a CSA for each such facility. The purposes of the CSAs are to: 07 Characterize the extent of impact resulting from the storage of coal ash at regulated facilities ,610 Evaluate the chemical and physical characteristics of detected constituents 1610 Investigate site geology and hydrogeology ,67 Determine factors that are related to contaminant transport ,67 Examine risk to potential receptors and exposure pathways To meet specific North Carolina Administrative Code (NCAC) requirements, CSAs were conducted in accordance with a conditionally approved Groundwater Assessment Plan. Those requirements, defined in 15A NCAC 02L .0106(g), include an assessment of the horizontal and vertical extent of constituents present in groundwater at concentrations exceeding groundwater quality standards. Regulations regarding North Carolina groundwater quality standards (T15A NCAC 02L.0202. Section (b)(3)) state the following: Where naturally occurring substances exceed the established standard, the standard shall be the naturally occurring concentration as determined by the Director. That sentence underscores the importance of determining the naturally occurring concentrations of constituents present in groundwater. Such determination is essential in fully characterizing the extent of impacts resulting from the storage of coal ash. Methodology for determining background concentrations in groundwater and soil at coal ash facilities is presented in the technical memorandum Revised Statistical Methods Page 1-1 P:\Duke Energy Carolinas\ Statistics—CAMA\ BTV Reports for CSAs\Belews Creek\ DRAFT\ Belews Creek_BTV Report Text_CSA2_FINAL. docx Proposed Background Threshold Values For Naturally Occurring Concentrations in Groundwater and Soil October 2017 Belews Creek Steam Station SynTerra for Developing Reference Background Concentrations for Groundwater and Soil at Coal Ash Facilities (HDR Engineering, Inc. and SynTerra Corporation, May 2017). That document was based on the U.S. Environmental Protection Agency (USEPA) "Unified Guidance" (USEPA, 2009); USEPA's Guidance for Comparing Background and Chemical Concentrations in Soil for CERCLA Sites (USEPA, 2002); USEPA ProUCL Technical Guide (USEPA, 2015); and the North Carolina Division of Water Quality (NCDWQ) technical assistance document for Evaluating Metals in Groundwater at DWG Permitted Facilities (NCDWQ, 2012). The North Carolina Department of Environmental Quality (NCDEQ) Division of Water Resources (DWR) has conditionally approved the statistics methodology presented in the statistical methods guidance document. On July 7, 2017, NCDEQ provided a response letter to Duke Energy (Zimmerman to Draovitch) requiring that background constituent concentrations (referred to herein as provisional background threshold values [PBTVs]) in groundwater and soil at the Belews Creek Steam Station be determined and submitted within 30 days from receipt of the letter. The response letter also identified groundwater and soil data appropriate for use in the statistical determination of PBTVs for the Site. PBTVs for BCSS with revised background groundwater and soil datasets were submitted to NCDEQ on August 4, 2017 and August 30, 2017. Additionally, revised PBTVs for constituents in soil were resubmitted to NCDEQ on September 5, 2017 (Draovitch to Zimmerman) in response to comments provided by NCDEQ dated September 1, 2017 (Zimmerman to Draovitch). This report provides documentation of the procedures, evaluations, and calculations used to determine PBTVs for submittal to NCDEQ. All procedures were performed in accordance with the May 2017 statistical methods guidance document. Page 1-2 P:\Duke Energy Carolinas\ Statistics—CAMA\ BTV Reports for CSAs\Belews Creek\ DRAFT\ Belews Creek_BTV Report Text_CSA2_FINAL. docx Proposed Background Threshold Values For Naturally Occurring Concentrations in Groundwater and Soil October 2017 Belews Creek Steam Station 2.0 BACKGROUND DATASETS SynTerra Groundwater samples have been collected from background monitoring wells from 2011 to 2017. Soil samples were initially collected at background locations during the 2015 CSA (HDR Engineering Inc. 2015a). Additional soil samples were collected at background locations in 2017 to augment the background dataset for establishing PBTVs for constituents in soil. The following section describes background groundwater and soil datasets that were used to establish site PBTVs. Details regarding background datasets have also been provided in the CSA (HDR Engineering Inc. 2015a), Corrective Action Plan (CAP) 1 (HDR Engineering Inc. 2015b), CAP 2 (HDR Engineering Inc. 2016), supplemental reports, and monthly electronic data submittals. 2.1 Groundwater Groundwater samples were collected from monitoring wells using low -flow sampling techniques in accordance with the USEPA Region 1 Purging and Sampling Procedure for the Collection of Groundwater Samples from Monitoring Wells (revised January 19, 2010) and in accordance with the Groundwater Monitoring Program, Low Flow Sampling Plan, Duke Energy Facilities, Ash Basin Groundwater Assessment Program, North Carolina (dated June 10, 2015). Groundwater samples were analyzed for constituents listed in Table 1. The background monitoring well network at BCSS (Figure 1) consists of wells installed within three hydrogeologic flow layers: 47 Shallow ,610 Deep 47 Fractured bedrock The background dataset for each flow layer consists of sample data pooled across background monitoring wells monitoring that flow layer. PBTVs were statistically determined for constituents using total (non -filtered) sample results obtained from background wells through the first quarter of 2017. Data were omitted from the background datasets if one or more of the following conditions were encountered: 07 pH was greater than 8.5 standard units (SU) during the time of sample collection 47 Groundwater turbidity was greater than or equal to 10 Nephelometric Turbidity Units (NTUs) at the time of sample collection '61' Groundwater turbidity or pH were not recorded at the time of sample collection Page 2-1 P:\Duke Energy Carolinas\ Statistics—CAMA\ BTV Reports for CSAs\Belews Creek\ DRAFT\ Belews Creek_BTV Report Text_CSA2_FINAL. docx Proposed Background Threshold Values For Naturally Occurring Concentrations in Groundwater and Soil October 2017 Belews Creek Steam Station 17 Result was identified as a statistical outlier SynTerra ,67 Sample collection occurred less than 60 days between sampling events (referred to herein as autocorrelated samples) 47 Non-detected result (non -detect) was greater than 15A NCAC .02L (2L) Standard or Interim Maximum Concentration (IMAC) of 15A NCAC .02L Appendix 1, April 1, 2013. The background dataset for each flow layer used to statistically determine PBTVs for constituents in groundwater are provided in Table 2. The following sections of this report summarize the background dataset for the surficial, , deep,, and fractured bedrock flow layers. 2.1.1 Shallow Flow Layer Four wells (BG -2S, BG -3S, MW -202S, and MW -3) are used to monitor background groundwater quality within the shallow flow layer. As of the first quarter of 2017, the background dataset for the shallow flow layer contained at least 10 valid samples. Additional samples were collected from BG -2S, BG -3S, MW -202S, and MW -3 during the second and third quarters of 2017. These wells will be sampled again in the fourth quarter of 2017. 2.1.2 Deep Flow Layer Four wells (BG -11), BG -2D, BG -3D, and MW -202D) are used to monitor background groundwater quality within the deep flow layer. Through the first quarter of 2017, the background dataset for the deep flow layer contained more than 10 valid samples for all constituents. Additional samples were collected from BG -1D, BG -2D, BG -3D, and MW -202D during the second and third quarters of 2017. These wells will also be sampled in the fourth quarter. 2.1.3 Fractured Bedrock Flow Layer Two wells (BG-2BR-A and MW-202BR) are used to monitor background groundwater quality within the fractured bedrock flow layer. As of the first quarter of 2017, the background dataset for fractured bedrock contained less than 10 valid samples for all constituents. Additional samples were collected from BG-2BR-A and MW-202BR during the second and third quarters of 2017 and will continue until at least 10 valid samples have been collected Page 2-2 P:\Duke Energy Carolinas\ Statistics_CAMA\BTV Reports for CSAs\Belews Creek\ DRAFT\ Belews Creek_BTV Report Text_CSA2_FINAL. docx Proposed Background Threshold Values For Naturally Occurring Concentrations in Groundwater and Soil October 2017 Belews Creek Steam Station SynTerra 2.2 Soil Discrete soil samples were collected from multiple depth intervals at background locations during the 2015 CSA. Additional samples were collected from background locations in 2017 to augment the background dataset for use in establishing PBTVs. Soil sample locations are presented in Figure 2. Soil samples were analyzed for constituents listed in Table 1. The background soil dataset for BCSS consists of background soil sample data pooled across varying depths and non -impacted locations. Soil samples that did not meet the following criteria were omitted from the background dataset: y Sample was collected from a location impacted by CCR or coal -associated materials 41, Sample was collected from a depth of less than 0.5 foot below ground surface 47 Sample was collected from a location that was impacted by other potential anthropogenic sources of constituents �7 Sample was collected less than 1 foot above the seasonal high water table elevation 167 Non-detected result was greater than the North Carolina Preliminary Soil Remediation Goals (PSRG) Protection of Groundwater (POG PSRG; Table 3). Background soil data used to statistically establish PBTVs for naturally occurring inorganic constituents in soil are provided in Table 3. Page 2-3 P:\Duke Energy Carolinas\ Statistics—CAMA\ BTV Reports for CSAs\Belews Creek\ DRAFT\ Belews Creek_BTV Report Text_CSA2_FINAL. docx Proposed Background Threshold Values For Naturally Occurring Concentrations in Groundwater and Soil October 2017 Belews Creek Steam Station SynTerra 3.0 PRELIMINARY DATA ANALYSIS Preliminary analysis of background datasets was performed before calculating PBTVs for constituents in groundwater and soil at BCSS. That preliminary analysis included: 167 Calculating descriptive statistics y Graphical analysis 167 Screening datasets for statistical outliers and auto -correlated sample results y Assessing the distribution of constituent data 3.1 Descriptive Statistics Descriptive statistics are useful for characterizing data, increasing dataset understanding, and for assessing information quality. The following descriptive statistics were calculated for the background groundwater and background soil datasets: 101 Sample size 17 Number of non -detects 47 Percentage of non -detects Those statistics were calculated for constituents within each groundwater flow layer (Tables 4, 5, and 6). Descriptive statistics for constituents in soil are provided in Table 7. 3.2 Management of Non -Detect Data Concentrations between the lowest achievable value that can be quantitatively obtained by laboratory analytical procedures or technology (referred to as the reporting limit) and zero are called non -detects. A high degree of uncertainty is associated with non- detected values. During statistical analysis of groundwater and soil data, non-detected values within each background dataset were adjusted accordingly using the statistics software ProUCL version 5.1.002 (USEPA, 2015). The manner in which non -detects were adjusted was determined by the proportion of non -detects present within a dataset. For cases in which datasets were comprised of 50 percent or fewer non -detects, algorithms in ProUCL were applied using either the Kaplan -Meir (KM) method or robust regression on order statistics (ROS) to address non -detects. If datasets contained between 50 percent and 90 percent non -detects, PBTVs were estimated using non - Page 3-1 P:\Duke Energy Carolinas\StatistiCS_CAMA\BTV Reports for CSAs\Belews Creek\DRAFT\Belews Creek_BTV Report Text_CSA2_FINAL. docx Proposed Background Threshold Values For Naturally Occurring Concentrations in Groundwater and Soil October 2017 Belews Creek Steam Station SynTerra parametric statistical methods that do not distinguish between detected and non- detected concentrations. For instances where datasets contained 90 percent or more non -detects or less than three detected concentrations, the non -detect value with the highest frequency of occurrence was used to represent the PBTV. 3.3 Graphical Analysis Background groundwater data was graphically portrayed using scatter plots, box -and - whisker plots, and quantile -quantile (Q -Q) plots, while background soil data was illustrated using box -and -whisker plots and Q -Q plots. The use of scatter plots of concentration versus time for constituents within each background monitoring well assisted in identifying outliers and potential trends or seasonality within datasets. Box - and -whisker plots and Q -Q plots were constructed for each constituent within each background well and for each groundwater flow layer. That was done to assess dataset distributions, identify possible outliers, and to identify sub -groups. Box -and -whisker plots and Q -Q plots for groundwater constituents are provided in Appendices A through C. Box -and -whisker plots and Q -Q plots were also produced for constituents in soil to identify outliers, assess dataset distributions, and capture spatial variability across boring depths. Box -and -whisker plots and Q -Q plots produced for soil are provided in Appendix D. Graphical analysis was also used to provide information regarding a steady-state baseline period free of trending or shifting background concentrations (Figures 3 and 4). Graphical analysis was used to determine whether background data were valid for use in establishing PBTVs or whether historical data warranted removal from the dataset due to trending or shifting concentrations. 3.4 Screening Datasets for Outliers Outliers are values beyond the range of values that represent the bulk distribution of a dataset. Background groundwater and soil datasets were screened for potential outliers in accordance with methodology outlined in the Revised Statistical Methods for Developing Reference Background Concentrations for Groundwater and Soil at Coal Ash Facilities (HDR Engineering, Inc. and SynTerra Corporation, May 2017) technical memorandum. During the screening of datasets for outliers, auto -correlated values were retained to help determine whether suspected outliers are a result of pure chance (i.e., very low probability of occurrence) or in fact are representative of constituent concentrations at a given point in time. Autocorrelated values represent real data representative of a given location at a given report in time; therefore, this data should be retained for outlier screening. Omission of autocorrelated values is warranted only during the assessment Page 3-2 P:\Duke Energy Carolinas\StatistiCS_CAMA\BTV Reports for CSAs\Belews Creek\DRAFT\Belews Creek_BTV Report Text_CSA2_FINAL. docx Proposed Background Threshold Values For Naturally Occurring Concentrations in Groundwater and Soil October 2017 Belews Creek Steam Station SynTerra of data distributions and calculation of PBTVs, both of which make an underlying assumption that data are independent from one another with respect to time. Only extreme outliers and data resulting from laboratory, sampling, or reporting errors were omitted from statistical evaluations. Mild outliers were retained for statistical evaluations, as those values might be a result of "natural fluctuations and variability' in constituent concentrations (USEPA, 2009; USEPA, 2015). Results for quantitatively screening groundwater and soil datasets for potential outliers using either Dixon's or Rosner's Outlier test are provided in Appendices E through H. Statistical outliers omitted from groundwater and soil datasets prior to the estimation of PBTVs are identified in Tables 2 and 3. 3.5 Autocorrelation Autocorrelation occurs when measurements collected at different points in time correlate with one another. Sources of autocorrelation in groundwater data can be caused by seasonality, trends, or a lack of adequate time between sample collections. For the estimation of PBTVs for constituents in groundwater and soil, NCDEQ requested (Technical Memorandum: Zimmerman to Draovitch, April 2017) that Duke Energy use a minimum 60 -day interval between groundwater sampling events, and that samples collected less than 60 days apart be omitted from statistical evaluations. Sample data omitted from statistical evaluations as a result of autocorrelation are identified in Table 2. 3.6 Evaluation of Dataset Distribution Upon completion of screening background datasets for outliers and autocorrelated sample results, the distribution of background groundwater and soil data were assessed following the methodology provided the Revised Statistical Methods for Developing Reference Background Concentrations for Groundwater and Soil at Coal Ash Facilities (statistical methods document) (HDR Engineering, Inc. and SynTerra Corporation, May 2017) technical memorandum. Background constituent data were evaluated for fit with normal, lognormal, and gamma distribution models. If one of the three distribution models did not describe the dataset adequately, non -parametric (distribution -free) statistical methods were used. Rather than relying only on the text statement provided in ProUCL GOF test results output to determine which distribution model most accurately described the background dataset for a constituent, the significance level (i.e., probability level or P - value), test value, critical value, and censored and uncensored Q -Q goodness -of -fit Page 3-3 P:\Duke Energy Carolinas\StatistiCS_CAMA\BTV Reports for CSAs\Belews Creek\DRAFT\Belews Creek_BTV Report Text_CSA2_FINAL. docx Proposed Background Threshold Values For Naturally Occurring Concentrations in Groundwater and Soil October 2017 Belews Creek Steam Station SynTerra (GOF) plots were assessed. The distributions of background constituent data for groundwater and soil are provided in Tables 4, 5, 6, and 7. ProUCL GOF test result outputs for groundwater and soil are provided in Appendices I through K. GOF tests were not performed on the bedrock flow zone constituent datasets because less than 10 valid samples were present. Page 3-4 P:\Duke Energy Carolinas\ Statistics—CAMA\ BTV Reports for CSAs\Belews Creek\DRAFT\Belews Creek_BTV Report Text_CSA2_FINAL. docx Proposed Background Threshold Values For Naturally Occurring Concentrations in Groundwater and Soil October 2017 Belews Creek Steam Station SynTerra 4.0 PROPOSED PROVISIONAL BACKGROUND THRESHOLD VALUES PBTVs were determined by calculating the upper tolerance limit (UTL) for each constituent. Upper and lower tolerance limits were calculated for pH. UTLs were calculated for constituents in groundwater and soil at BCSS following methodology outlined in the Revised Statistical Methods for Developing Reference Background Concentrations for Groundwater and Soil at Coal Ash Facilities (statistical methods document) (HDR Engineering, Inc. and SynTerra Corporation, May 2017) technical memorandum. Statistical analysis software UTL outputs are provided in Appendices L through N. The proposed groundwater and soil PBTVs for BCSS submitted to NCDEQ in August 2017 and resubmitted in September 2017 are provided in Tables 8 and 9. Formal UTL statistics were not calculated for constituent datasets containing less than 10 valid samples. For datasets with less than 10 valid samples available for determination of PBTVs, the PBTV for a constituent and groundwater flow layer was computed to be either the maximum concentration. If the maximum concentration was an order of magnitude greater than the geometric mean of all concentration values, the maximum concentration was considered an outlier and the PBTV was computed to be the second highest concentration. Page 4-1 P:\Duke Energy Carolinas\ Statistics—CAMA\ BTV Reports for CSAs\Belews Creek\DRAFT\Belews Creek_BTV Report Text_CSA2_FINAL. docx Proposed Background Threshold Values For Naturally Occurring Concentrations in Groundwater and Soil October 2017 Belews Creek Steam Station SynTerra 5.0 REFERENCES NCDEQ DWR, 2012. Evaluating Metals in Groundwater at DWQ Permitted Facilities: A Technical Assistance Document for DWQ Staff. http://digital.ncdcr. gov/cdm/ref/collection/p 16062co119/id/251181. HDR Engineering Inc, 2015a. Comprehensive Site Assessment, Belews Creek Steam Station, September 9, 2015. HDR Engineering Inc, 2015b. Corrective Action Plan, Belews Creek Steam Station, December 8, 2015. HDR Engineering Inc, 2016. Corrective Action Plan 2, Belews Creek Steam Station, March, 4, 2016. USEPA, 2002. Guidance for Comparing Background and Chemical Concentrations in Soil for CERCLA Sites. EPA 540-R-01-003. USEPA, 2009. Statistical Analysis of Groundwater Monitoring Data at RCRA Facilities — Unified Guidance, March 2009. EPA 530-R-09-007. USEPA, 2015. Statistical Software Pro UCL 5.1.002 for Environmental Applications for Data Sets with and without Nondetect Observations. EPA/600/R07/041. Page 5-1 P:\Duke Energy Carolinas\ Statistics—CAMA\ BTV Reports for CSAs\Belews Creek\DRAFT\Belews Creek_BTV Report Text_CSA2_FINAL. docx Proposed Background Threshold Values For Naturally Occurring Concentrations in Groundwater and Soil October 2017 Belews Creek Steam Station FIGURES SynTerra P:\Duke Energy Carolinas\Statistics—CAMA\BTV Reports for CSAs\Belews Creek\DRAFT\Belews Creek_BTV Report Text_CSA2_FINAL. docx � ',M GWA-24S/D/BR r• ` GWA-30S/D GWA-1'S/D/BR GWA-32S/D'. BG -1S �' - '= GWA41S/D •AB-1/S/D/BR 'r AB-3S/D MW -201 U/B R � GWA-31 S/D AB=2S/D GWA-ZOS/SA/D/BR f! GWA-22S/U 9S/SA/D/BR GWA-27S/U 1 GWA-3S/D 'GWA-10S/D sti . i ' -ASH BASIN16 I BELEWS RESERVOIR r .�� MW-204S/D • '+' GWA-5S*/D*/BR* - } • F -°oq AB-5S/SL/D MW-104S/D/BRp��NTRa _ MW-203S/D/BR AB-4S/SL/U/BR/BRD AB-7S/D r LEGEND _ _ y AB-8S/SL/D BACKGROUND MONITORING WELL LOCATIONS - OB -5 GWA-8S/D lti ACCEPTED BY NCDEO GWA-9S/D/BR OB -4 MONITORING WELL LOCATIONS MWZ'2* AB,9S/D/BR/BRD / ,fir > STREAM (AMEC NRTR 2015) " _ MW2-1* MW2-3* �'''; DESIGNATED EFFLUENT CHANNEL _ '{ `u's MWZ-7 ASH BASIN WASTE BOUNDARY • �9tir• • • MW-5�� ;� MW2-9 t�"�F �o � — � — � — ASH BASIN COMPLIANCE BOUNDARY PINE HALLMW-7d.,♦ MW -3 ... LANDFILL a�� STRUCTURAL FILL BOUNDARY �,�� SFMW-2D .q LANDFILL COMPLIANCE BOUNDARY MW2-58 DUKE ENERGY CAROLINAS BELEWS CREEK PLANT STEAM STATION — —SITE BOUNDARY *MW GWA-26S/U/BR � -- { - GWA-2BS/U A&P A-25BR MW -s - �. SFMW-4U � • '' - NOTES: ABANDONED WELL. . _ MW -1 MW -2 m � _ � PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY CAROLINAS. � ' � GWA-12S/U/BR SFMW-3D AERIAL PHOTOGRAPHY OBTAINED FROM GOGGLE EARTH PRO ON AUGUST 2, 2017. _j aIF AERIAL WAS COLLECTED ON APRIL 8, 2017. ��?. DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANE Gee ` .. ��E 1 COORDINATE SYSTEM FIPS 3200 NAD83/2011 . ,•,1 „ 500 250 0 500 1,000 FIGURE 1 �.` Y _»•_ GRAPHIC SCALE IN FEET BACKGROUND GROUNDWATER synTerra 148 RIVER STREET, SUITE 220 SAMPLE LOCATIONS GREENVILLE, SOUTH CAROLINA 29601 PHONE 864-421-9999 BELEWS CREEK STEAM STATION • • - ` ww.s n rr r m ..� --�-- DUKE DUKE ENERGY CAROLINAS, LLC -_ ENERGY DRAWN BY: B. YOUNG CHECKED BY: A. ALBERT DATE: 10/23/2017 BELEWS CREEK, NORTH CAROLINA ' _ • 1. CAROLINE .. PROJECT MANAGER: S. SPINNER i P:\Duke Enerav Pro ress.1026\00 GIS BASE DATA\Belews Creek Steam Station\Ma Docs\Back round\Fi ure 1- Background Groundwater Sample Location Map, 120 o— rd z z0 100 V'P`Natd uj 80 ~ 60 Z V 40 O z u 0 20 0 3/3/2010 5/11/2012 7/20/2014 9/27/2016 120 Oz 100 z uj � 80 ~ 60 Z V 40 O z u 0 20 DATE Downward Trend 0 3/3/2010 5/11/2012 7/20/2014 410 symTerra 148 RIVER STREET, SUITE 220 GREENVILLE, SOUTH CAROLINA 29601 PHONE 864-421-9999 DRAWN BY: J. GILMER DATE: AUGUST 2017 PROJECT MANAGER: S. SPINNER P:\Duke Energy Carolinas\Statistics_CAMA\BTV Reports for CSAs\Belews Creek\DRAFT\Figures I 9/27/2016 FIGURE 3 TRENDING CONCENTRATIONS BELEWS CREEK STEAM STATION DUKE ENERGY CAROLINAS, LLC BELEWS CREEK, NORTH CAROLINA 450 pie 100 O O 50 0 1/1/2010 8/24/2011 synTerra I I New Background Dataset I I I I I I I I I 4/15/2013 DATE 148 RIVER STREET, SUITE 220 GREENVILLE, SOUTH CAROLINA 29601 PHONE 864-421-9999 www. synte rra co rp.Com DRAWN BY: J. GILMER DATE: AUGUST 2017 PROJECT MANAGER: S. SPINNER P:\Duke Energy Carolinas\Statistics_CAMA\BTV Reports for CSAs\Belem Creek\DRAFT\Figures 12/6/2014 7/28/2016 FIGURE 4 CONCENTRATION SHIFT BELEWS CREEK STEAM STATION DUKE ENERGY CAROLINAS, LLC BELEWS CREEK, NORTH CAROLINA , 350 Z z O 300 W 250 in W 200 Z V I 0 z 150 V 100 O O 50 0 1/1/2010 8/24/2011 synTerra I I New Background Dataset I I I I I I I I I 4/15/2013 DATE 148 RIVER STREET, SUITE 220 GREENVILLE, SOUTH CAROLINA 29601 PHONE 864-421-9999 www. synte rra co rp.Com DRAWN BY: J. GILMER DATE: AUGUST 2017 PROJECT MANAGER: S. SPINNER P:\Duke Energy Carolinas\Statistics_CAMA\BTV Reports for CSAs\Belem Creek\DRAFT\Figures 12/6/2014 7/28/2016 FIGURE 4 CONCENTRATION SHIFT BELEWS CREEK STEAM STATION DUKE ENERGY CAROLINAS, LLC BELEWS CREEK, NORTH CAROLINA Proposed Background Threshold Values For Naturally Occurring Concentrations in Groundwater and Soil October 2017 Belews Creek Steam Station TABLES SynTerra P:\Duke Energy Carolinas\Statistics—CAMA\BTV Reports for CSAs\Belews Creek\DRAFT\Belews Creek_BTV Report Text_CSA2_FINAL. docx TABLE 1 CHEMICAL PARAMETERS ANALYZED IN GROUNDWATER AND SOIL BELEWS CREEK STEAM STATION DUKE ENERGY PROGRESS, LLC, BELEWS CREEK, NC FIELD PARAMETERS pH*t Specific Conductance* Temperature* Dissolved Oxygen* Oxidation Reduction Potential* Eh* Turbidity* INORGANICS Aluminum Antimony Arsenic Barium Beryllium Boron Cadmium Chromium Cobalt Copper Iron Lead Manganese Mercury Molybdenum Nickel Selenium Strontium Thallium (low level) Vanadium (low level) Zinc NOTES: * = Indicates parameter analyzed in groundwater only. RADIONUCLIDES Radium 226* Radium 228* Uranium (233, 234, 236, 238)* ANIONS/CATIONS/OTHER Alkalinity (as CaCO3)* Bicarbonate* Calcium Carbonate* Chloride Magnesium Nitrate (as N)t Nitrate + Nitrite* Potassium Percent Moisturet Methane* Sodium Sulfate Sulfide* Total Dissolved Solids* Total Organic Carbon Total Suspended Solids* t = Indicates parameters analyzed in soil only. Metals in groundwater were analyzed for total and dissolved concentrations. Soil pH measured at 25 degrees C. Analysis of groundwater and soil samples for Chromium (VI) began after initial samples were collected as part of CSA. P:1Duke Energy Carol inas\Statistics_CAMAIBTV Reports for CSAs\Belews CreekIDRAFT1Tables\Table 1 - Chemical Parameters analyzed in Groundwater and Fige 1 of 1 TABLE 2 BACKGROUND GROUNDWATER RESULTS THROUGH APRIL 2017 BELEWS CREEK STEAM STATION DUKE ENERGY CAROLINAS, LLC, BELEWS CREEK, NC NDuke Energy Carolinas\8tatis6cs_CAMAIBTV Reports for CBAs\Belms Creek\DRAF RTables\Table 2 - Background Groundwater Datesets_BC.xlsx Page 1 of 6 Analytical Parameter y pH Turbidity Alkalinity Aluminum Antimony Arsenic Barium Beryllium Bicarbonate Alkalinity Boron Cadmium Calcium Carbonate Alkalinity Chloride Chromium (VI) Chromium Cobalt Copper Iron Lead Magnesium Manganese Mercury Reporting Units S. U. NTU ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L 15A NCAC 02L Standard 6.5-8.5 NE NE NE 1* 10 700 4* NE 700 2 NE NE 250,000 10 10 1* 1000 300 15 NE 5o 1 Sample ID Sample Collection Date Field Parameters Analytical Results Shallow BG -2S 7/9/2015 5.8 8.33 13400 410 <0.5 <0.5 60 <0.2 13400 <50 0.41 1920 <5000 2000 --- 1.1 J+ 0.193 0.463 650 <0.1 1280 25 <0.2 BG -2S 9/29/2015 5.8 9.9 119003- 200 0.33 <0.5 61 <0.2 11900 <50 0.0363 1700 <5000 25003+ 1.4 1.73+ 0.133 0.587+ 300 0.12 1180 10 <0.2 BG -2S 11/12/2015 5.8 9.54 15500 1000 <0.5 <0.5 348 <0.2 15500 <50 0.053 3340 <5000 9400 1.33+ 1.81+ 0.23 0.521 1600 0.24 2400 31 <0.2 B6-25 6.-D SS 20300 91-3 <85 C0.5 138 0.07 3 20300 <-50 0.0353 4920 <-5000 10200 +.3 r4 C0.5 0.45-3+ 120 Co.! 3150 6. Q.2 BG -2S 3/29/2016 5.9 7.1 22900 142 <0.5 0.1 30.9 0.0633+ 22900 <50 <0.08 8030 <5000 18800 1 2.4 0.0853+ 0.24J 234 0.11 4230 5.1 <0.2 B6-25 5120-16 6.$ 8.4 22200 472 Q.5 0.058-J 33-.7 0.44-J 22200 <-50 <0.08- 8250 <-5000- 48.5 2 4.b 0,1�2 0:34 383 031 3970 63 <&2 - BG -2S 9/20/2016 5.9 7.6 22500 481 <0.5 0.0843 33.9 0.0293 22500 <50 <0.08 7260 <5000 14700 1.1 4.3 0.12 2.1 768 0.11 3610 14.4 <0.2 BG -2S 4/4/2017 5.8 9.8 19500 345 <0.5 0.1 138 0.0753+ <5000 <50 0.0683 5360 <5000 14000 1.5 3.4 0.18 1.33+ 467 0.29 3410 11.8 <0.2 BG -3S 7/18/2015 5.3 4.02 6800 130 <0.5 <0.5 40 0.173 6800 <50 0.0523 2080 <5000 2900 --- 1.23+ 0.53 <1 <50 0.0663 1310 29 <0.2 BG -3S 11/17/2015 5.3 2.42 6500 601 <0.5 <0.5 36 0.23 6500 <50 <0.08 1930 <5000 3800 0.28 0.72 0.353 <1 81 0.11 1180 19 <0.2 BG 35 12�2015 15.3 938 6700 }50 Q.5 C0.5 36 037 3 6700 <-50 0.0223 2060 <-5000- 3900 0-15 034-7+ 0.243 0.46-3-+ 160 0.048-J 1210 36 Q.2 - BG -3S 3/30/2016 5.3 7.9 8700 <100 <0.5 <0.1 32.1 0.18 8700 <50 <0.08 2110 <5000 1600 0.26 0.83 J+ 0.34 0.271 51.9 <0.1 1300 15.9 <0.2 BG 3S 5 "x^0-16 53 6 5 6800 374 0,74 032 46-.4 033 6800 <-50 <0.08- 2550 <-5000- 3-7 037 3-.4 0-.4 3-.4 482 039 3410 24 <93 - BG -3S 9/22/2016 5.4 5.3 8000 118 <0.5 <0.1 45.2 0.28 8000 <50 <0.08 2400 <5000 1900 0.21 1.5 0.21 2.5 158 <0.1 1390 13.9 <0.2 BG 3S 11/18/2016 5.5 7.5 7900-3 7950 033 0,61 102 036 7900-3 <-50 <0.08- 2440 <-5000- 2300 23 33 3.3 23 }}180 2-.4 1360 189 <&2 - BG -3S 1/26/2017 5.4 9.4 7200 449 <0.5 0.12 42.6 0.23 7200 <50 <0.08 2150 <5000 2400 0.5 1.4 0.3 0.71 666 0.38 1180 18.5 <0.2 BG 3S 4f5/2017 53 93 7800 322 <65 0.066-J 383 0323+ 7800 <-50 <0.08- 2110 <-5000 2800 034 4.4-3+ 039-3+ 034-3+ 464 0.3 Ilse 34 <&2 - MW -202S 1/6/2011 5.6 8.44 --- --- <1 <1 23 --- --- <50 <1 --- --- --- --- <5 --- <5 69 <1 --- 26 <0.05 MW -202S 5/4/2011 5.6 6.78 --- --- <1 <1 21 --- --- <50 <1 --- --- --- --- <5 --- <5 81 <1 --- 18 <0.05 MW -202S 9/6/2011 5.3 2.96 --- --- <1 <1 24 --- --- <50 <1 --- --- --- --- <5 --- <5 40 <1 --- 11 <0.05 MW -202S 1/9/2012 5.6 2.25 --- --- <1 <1 24 --- --- <50 <1 --- --- --- --- <5 --- <5 31 <1 --- 9 <0.05 MW -202S 5/9/2012 5.6 2.77 --- --- <1 <1 25 --- --- <50 <1 --- --- --- --- <5 --- <5 113 <1 --- 9 <0.05 MW -202S 9/5/2012 5.5 2.56 --- --- <1 <1 23 --- --- <50 <1 --- --- --- --- <5 --- <5 51 <1 --- 5 <0.05 MW -202S 1/9/2013 5.7 2.6 14000 --- <1 <1 24 --- --- <50 <1 1190 --- --- --- <5 --- <5 64 <1 573 <5 <0.05 MW -202S 5/8/2013 5.6 3.76 15000 --- <1 <1 21 --- --- <50 <1 1090 --- --- --- 8 --- <5 73 <1 493 <5 <0.05 MW -202S 9/9/2013 5.4 3.79 9400 --- <1 <1 22 --- --- <50 <1 1080 --- --- --- <5 --- <5 53 <1 496 <5 <0.05 MW -202S 1/8/2014 5.3 3.47 10000 --- <1 <1 22 --- --- <50 <1 1060 --- --- --- <5 --- <5 72 <1 517 <5 <0.05 MW -202S 5/6/2014 5.5 2.1 8700 --- <1 <1 21 --- --- <50 <1 1090 --- --- --- <5 --- <5 32 <1 495 <5 <0.05 MW -202S 9/9/2014 5.4 1.78 11000 --- <1 <1 22 --- --- <50 <1 1080 --- --- --- <5 --- <5 25 <1 506 <5 <0.05 MW -202S 1/6/2015 5.5 2.06 12000 --- <1 <1 22 --- --- <50 <1 1090 --- --- --- <5 --- <5 35 <1 492 <5 <0.05 MW -202S 5/5/2015 5.6 0.69 13200 23 1.05 <1 22 13200 <50 <1 1080 <5000 --- --- <5 <1 <5 22 <1 518 <5 <0.05 MW -202S 7/16/2015 5.5 6.48 14000 953 0.443+ <0.5 19 0.23 14000 <50 <0.08 1040 <5000 1200 --- 1.23+ <0.5 0.97+ 68 <0.1 474 3.23 <0.2 MW -202S 10/2/2015 5.8 3.6 13400 140 <0.5 <0.5 20 0.25 13400 <50 <0.08 1010 <5000 1700 --- 1.3 0.283 1.8 370 0.57 523 13 <0.2 MW -202S 12/16/2015 5.4 2.5 13700 320 <0.5 <0.5 25 0.25 13700 <50 <0.08 1060 <5000 1700 0.54 1.73+ 0.393 0.63 J+ 750 0.133+ 497 26 <0.2 MW -202S 3/29/2016 5.3 2.7 12600 <100 <0.5 0.0433 19.9 0.233+ 12600 <50 <0.08 1060 <5000 1700 0.48 0.743+ 0.0753+ 0.171 82.5 <0.1 519 3.93 <0.2 ,-.W 2022 5/9/-2016 53 8:3 }5800 172 Q.5 -0.1- 234 0,}9 }5800 <-50 <0.08- 1620 <-5000- 1-.4 Ori 0:32 0.0633 Q.S 226 Co.!- 533 4.4-} F02 - MW -202S 9/21/2016 5.9 0.63 13500 <100 <0.5 <0.1 22.8 0.2 13500 <50 <0.08 1130 <5000 1300 0.58 0.82 0.0273 0.81 84.8 <0.1 516 <5 <0.2 MW 202S SS 3.4 }5500 993-3 F05 '0.1- 233 03 }5500 -50 <0.08- }000 <-5000 4400 8.94 }.�3 06563 0}43 150 Co.!- 477 3. }3 Q.'- MW -202S 1/5/2017 5.4 1.56 13000 20 <1 <1 23 <-17 13000 <50 <1 1170 <5000 1600 <5 <1 <5 28 <1 563 <5 <0.05 MW 202S3'�'-5r"�^0-17 5.6 05 14600 HE0 <-05Co.! 233 046 34600 <-50 <0.08- 3320 <-5990 4600 +.3 }<$1- 0}63 2$3-3 Co.!- 576 <-S F02- MW -202S 4/3/2017 5.8 0.8 15400 <100 <0.5 <0.1 23 0.16 <5000 <50 <0.08 1130 <5000 1100 0.7 0.863+ <0.1 <0.5 <50 <0.1 514 <5 <0.2 MW -3 10/17/2012 5.7 6.15 HE0 --- <1 <1 Err <rr --- <50 <1 F}& --- F390 --- <5 <1 <5 <-I 0 <1 K <5 <0.05 MW -3 4/9/2013 5.5 8.07 8770---TO <1 <1 50.9 <-S --- <50 <1 3230 --- 9530 --- <5 <1 <5 59.9 <1 1040 3.81 0.007 MW -3 10/29/2013 5.6 7 8290 ---.355 0.255 53.4 0.313 --- <50 <1 3350 --- 8190 --- 3.83 0.463 2.45 1280 0.622 1200 22.3 <0.05 NDuke Energy Carolinas\8tatis6cs_CAMAIBTV Reports for CBAs\Belms Creek\DRAF RTables\Table 2 - Background Groundwater Datesets_BC.xlsx Page 1 of 6 TABLE 2 BACKGROUND GROUNDWATER RESULTS THROUGH APRIL 2017 BELEWS CREEK STEAM STATION DUKE ENERGY CAROLINAS, LLC, BELEWS CREEK, NC P.\Duke Energy Carolinas\Statis6cs_CAMAIBTV Reports for CSAs\Belms Creek\DRAF RTables\Table 2 - Background Groundwater Datesets_BC.xlsx Page 2 of 6 Analytical Parameter Methane Molybdenum Nickel Nitrate + Nitrite Potassium Selenium Sodium Strontium Sulfate Sulfide Thallium Total Dissolved Solids Total Organic Carbon Vanadium Zinc Radium (Total) Uranium (Total) Reporting Units ug/L ug/L ug/L ug-N/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L pCi/L ug/L 15A NCAC 02L Standard NE NE 100 11 NE 20 NE NE 250,000 NE 0.2* 500,000 NE 0.3* 1000 NE NE Sample ID Sample Collection Date Analytical Results Shallow BG -25 7/9/2015 1.81+ 0.113 0.927+ 420 <5000 <0.5 35103 18 <1000 <100 <0.1 57000 <1000 0.313 7.33 --- --- BG-2S 9/29/2015 1.63+ 0.123 0.63 410 <5000 <0.5 34403 18 6003 <100 0.0253 32000 <1000 0.623 7.51 --- --- BG-2S 11/12/2015 1.43+ <0.5 1.2 5407+ <5000 <0.5 5060 31 8303 <100 0.0163 62000 <1000 0.873 13 --- --- 136-2-5 12/16/2015 3.3-3+ 0.22-3 580 <-5600 0.5 5760 41 670-3 E100 0.1 87000 <1000 0.47-3 2-3-3+ BG -2S 3/29/2016 1.63+ 0.173 1.5 670 <5000 <0.5 7030 48 9503 <1001 <0.1 90000 <1000 1 10.6 0.539 0.5 86-25 5/11/2016 <10. 0.12-3 33 0.68 -5600 0.5 7210 54-.4 33 Q.1 0.1 88 &$6 12:9 0.274 0-.5 BG -2S 9/20/2016 <10 0.173 3.4 710 <5000 <0.5 6760 45.8 5403 <100 <0.1 84000 <1000 1 9.83 0.116 0.5 BG -2S 4/4/2017 <10 0.187+ 1.9 620 <5000 <0.5 5880 45.9 1100 <100 0.0383+ 77000 --- 1.3 7.23+ 0.377 0.5 BG -3S 7/18/2015 0.857+ <0.5 0.947+ 3100 <5000 <0.5 47703 25 <1000 <100 0.0483+ 57000 <1000 --- 6.93 --- --- BG-3S 11/17/2015 1.33+ <0.5 0.323 2600 <5000 <0.5 48901 24 <1000 <100 0.0343 <25000 <1000 0.383 8.13 --- --- 86-35 32/16/2015 23+ 00.5 044-3+ 2580 <-5600 0.5 48703 2,6 <100& c100- 0.0-33 63000 <1660- 039-3+ 6.8-3+ BG -3S 3/30/2016 1.73+ <0.5 0.93 2000 <5000 <0.5 33003 20.6 6403 <100 <0.1 <25000 8280 0.183 9.33 0.26 0.5 86-35 5/12/2016 <10. 00.5 036 3 -5000 0.5 3920-3 29 0.1 0.0223 37 0-.&8 93-3 0.552 0-.5 BG -3S 9/22/2016 <10 <0.5 1.4 3800 <5000 <0.5 42301 31.4 5503 <100 0.0183 59000 <1000 0.153 10.9 0.939 0.5 86-35 11/18/2816 <10. 00.5 1-7 3200 <- 5000 1� 4430-3 32 710 3 HE0. 0.0613 53000 64 383 0.651 &15 BG -3S 1/26/2017 <10 <0.5 0.83 3100 <5000 <0.5 45701 27.2 <1000 <100 0.0413 53000 --- 1.2 8.73 1.084 0.076 86-35 4/5/2017 <10. <- .5 0.76 2500 <-5000. 00.5 4700-3 26:9 <1000. cloo �+ 45000 &84 63-3 0.2289 0.5 MW -2025 1/6/2011 --- --- <5 --- --- <1 --- --- 350 --- <0.2 35000 --- --- <5 --- --- MW-202S 5/4/2011 --- --- <5 --- --- <1 --- --- 120 --- <0.2 30000 --- --- <5 --- --- MW-202S 9/6/2011 --- --- <5 --- --- <1 --- --- 1200 --- <0.2 52000 --- --- <5 --- --- MW-202S 1/9/2012 --- --- <5 --- --- <1 --- --- 2400 --- <0.2 35000 --- --- <5 --- --- MW-202S 5/9/2012 --- --- <5 --- --- <1 --- --- 2300 --- <0.2 49000 --- --- <5 --- --- MW-202S 9/5/2012 --- --- <5 --- --- <1 --- --- 2000 --- <0.2 49000 --- --- <5 --- --- MW-202S 1/9/2013 --- --- <5 --- 721 <1 5540 --- 1900 --- <0.2 48000 --- --- <5 --- --- MW-202S 5/8/2013 --- --- <5 --- 655 <1 5310 --- 1200 --- <0.2 46000 --- --- <5 --- --- MW-202S 9/9/2013 --- --- <5 --- 651 <1 5320 --- 970 --- <0.2 45000 --- --- <5 --- --- MW-202S 1/8/2014 --- --- <5 --- 657 <1 5390 --- 1000 --- <0.2 54000 --- --- <5 --- --- MW-202S 5/6/2014 --- --- <5 --- 669 <1 5360 --- 940 --- <0.2 42000 --- --- <5 --- --- MW-202S 9/9/2014 --- --- <5 --- 647 <1 5380 --- 730 --- <0.2 50000 --- --- <5 --- --- MW-202S 1/6/2015 --- --- <5 --- 694 <1 5570 --- 680 --- <0.2 35000 --- --- <5 --- --- MW-202S 5/5/2015 --- <1 <5 --- 628 <1 5460 --- 580 --- <0.2 37000 --- --- <5 --- --- MW-202S 7/16/2015 1.41+ <0.5 0.33+ 463+ <5000 <0.5 5300 9.1 <1000 <100 <0.1 41000 <1000 --- 2.83 8.74 0.248 MW -2025 10/2/2015 2.81+ <0.5 0.393 40 <5000 <0.5 5810 7.9 6403 <100 <0.1 45000 <1000 0.713 2.53 --- --- MW-202S 12/16/2015 1.43+ 0.13 0.56 <20 <5000 <0.5 5610 9.6 <1000 <100 <0.1 55000 5703 0.673 33 --- --- MW-202S 3/29/2016 1.83+ <0.5 <0.5 39 <5000 <0.5 5220 8.7 5703 <1003 <0.1 33000 <1000 0.193 <10 -0.076 0.5 ,-.W 2025 5/9/-2016 F10. <- .5 00.5 0.05.3 <-5000. 0.5 5640 ill 0.88-3 0.1 0.1 48 0.36-3 clo 9-:498 0.5 MW -2025 9/21/2016 <10 <0.5 <0.5 500 <5000 <0.5 5920 9.8 6603 <100 <0.1 45000 <1000 0.3 31 --- 0.5 ,-,W 2025 31/17/2016 010. 00.5 00.5 380 05000 00.5 6040 93 7903 0108- 00. 64000 0.23 010. 0-A7 0.5 MW -2025 1/5/2017 <1 <5 696 <1 5900 10 360 <0.2 68000 --- <0.3 <5 --- --- MW W 2025 1/25/2017 010. 00.5 00.5 40 05000. 00.5 6530 9:9 7603 0180. 00.1 32000 037-3 3.13 0.5 MW -2025 4/3/2017 <10 <0.5 <0.5 501+ <5000 <0.5 5540 10.7 <1000 <100 <0.1 54000 --- 0.223+ <10 0.6706 0.5 MW -3 10/17/2012 --- --- <5 --- <180. <1 --- <100 --- --- <10000 --- --- <5 --- --- MW-3 4/9/2013 --- --- <5 --- 2260 <1 2810 --- 185 --- --- 53000 --- --- <5 --- --- MW-3 10/29/2013 --- --- 2.89 --- 2380 0.321 2860 --- 173 --- --- 63000 --- 2,01 9.45 --- --- P.\Duke Energy Carolinas\Statis6cs_CAMAIBTV Reports for CSAs\Belms Creek\DRAF RTables\Table 2 - Background Groundwater Datesets_BC.xlsx Page 2 of 6 TABLE 2 BACKGROUND GROUNDWATER RESULTS THROUGH APRIL 2017 BELEWS CREEK STEAM STATION DUKE ENERGY CAROLINAS, LLC, BELEWS CREEK, NC NDuke Energy Carolinas\Statis6cs_CAMAIBTV Reports for CSAs\Belms Creek\DRAF RTables\Table 2 - Background Groundwater Datesets_BC.xlsx Page 3 of 6 Analytical Parameter y pH Turbidity Alkalinity Aluminum Antimony Arsenic Barium Beryllium Bicarbonate Alkalinity Boron Cadmium Calcium Carbonate Alkalinity Chloride Chromium (VI) Chromium Cobalt Copper Iron Lead Magnesium Manganese Mercury Reporting Units S. U. NTU ug/L ug/L ug/L ug/L ug/L ug/ L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L 15A NCAC 02L Standard 6.5-8.5 NE NE NE 1* 10 700 4* NE 700 2 NE NE 250,000 10 10 1* 1000 300 15 NE 50 1 Sample ID Sample Collection Date Field Parameters Analytical Results Shallow MW -3 4/16/2014 5.6 8.13 7199 9.99 613 --- 3349 --- 9818 --- 9:58 333 9:2-7 1129 742 MW -3 12/16/2015 5.7 8.55 7600 150 <0.5 <0.5 58 0.173 7600 <50 <0.08 3690 <5000 10300 0.83 1.2 J+ 0.183 0.38J 170 0.15 1180 5.3 <0.2 MW -3 3/29/2016 4.8 8.1 48003 61.6 J <0.5 0.0853 68.8 0.323+ 4800J <50 0.0583 2850 <5000 10700 0.34 0.84 J+ 0.073+ 0.32 J 86.1 0.12 1030 4.8 J <0.2 MW -3 9/22/2016 5.5 7.2 8400 140 <0.5 0.0823 55.8 0.22 8400 <50 <0.08 3480 '5000 10000 1.2 33-3 0.21 0.16J 209 <0.1 1100 7 <0.2 MW -3 1/26/2017 5.6 4.5 9600 132 <0.5 0.13 54.8 0.15 9600 <50 <0.08 3530 <5000 9400 0.68 1.4 0.15 0.31J 178 0.14 1090 4.63 <0.2 MW -3 4/6/2017 5.6 9.6 10400 71.4 J <0.5 0.123+ 55.1 0.163+ <5000 <50 <0.08 3870 <5000 8900 0.68 1.43+ 0.11 0.64 J+ 105 0.0953 1210 4.33 <0.2 HW -3 4"19-2997 S. 9:95 6860 - 4- 03849 56-2 J 45 - 5:38-3 <1 3838 - +3389 - 4-.753 0:35 3 �r 306 &ir}3 3 30 6z�S3 E&.8S Deep BG -1D 7/14/2015 6.3 7.4 23800J- 140 1.5 0.463 4.1 J <0.2 23800 <50 0.2 5410 '5000 7800 --- 2.7 0.9 1.8 100 0.26 2200 93 <0.2 BG -1D 9/29/2015 5.8 2.1 12100 <100 0.213 <0.5 3.1 J <0.2 12100 293 0.063 3460 <5000 7200 <0.02 0.223+ 2 0.33+ 383 0.053+ 2040 73 <0.2 8G36 54-3 1.33 }2300 579 465 43 462- 12100 459 9.97;-9 3549 45990 7189 9.896 i -.i 9F 4:8 9.233 989 91 2i;20 57 40.2- BG -1D 12/16/2015 5.39 3.4 13100 <100 <0.5 <0.5 7.2 0.26 13100 <50 0.0793 4080 <5000 7000 0.039 <0.5 1.6 8.8 363 <0.1 2210 55 <0.2 BG -1D 3/29/2016 5.9 1.4 11900 <100 <0.5 0.0763 2.6J 0.13+ 11900 <50 0.096 3260 <5000 7500 <0.03 1.6 1.7 0.393 50.2 <0.1 2180 45.7 <0.2 BG 19 5{33/2916 6.4 23 34709 489 9.9449 3-4-J 9.9859 44700 459 9.975 9 3990 45900 7 9.982 3:S 474 9.413 434-3 838 2399 475 E&2 - BG -1D 9/20/2016 6 0.7 ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ --- __BG36 BG 1E) 31/16,'2916 6.6 947 32399 '100 634 83 9849-9 32100 29.99 9:869 9 3869 E5900 8789 63 9.999 022 3-4 K69 E939 2349 2213 E929 BG -1D 1/25/2017 6.6 1 37100 <100 <0.5 <0.1 4.9J 0.023 37100 <50 <0.08 4900 <5000 8100 0.22 0.323 0.11 0.343 30.43 <0.1 2660 7.5 <0.2 BG -1D 4/3/2017 6.9 0.02 58800 <100 <0.5 0.1 6.6 0.0493 58800 45.63 <0.08 5470 <5000 7700 0.123+ 0.413+ 0.2 1.9 226 0.75 2660 13.2 <0.2 BG -2D 7/9/2015 6.52 9.25 47200 78J 0.251 0.23 7.8 <0.2 47200 <50 0.0593 11400 <5000 9700 --- 2.63+ 0.283 <1 72 0.0973 5960 12 <0.2 BG -2D 9/29/2015 6.7 1.5 46100 J- <100 0.491 <0.5 6.8 <0.2 46100 <50 0.0393 11700 <5000 9000 0.12 1.1 J+ <0.5 0.243+ 273 <0.13 5860 3.93 <0.2 BG -2D 11/12/2015 6.49 4.06 49800 <100 0.191 <0.5 10 <0.2 49800 <50 0.0273 12400 <5000 8700 0.12 1.81+ 0.193 0.263 75 <0.1 6220 5.5 <0.2 96-28 91_ 6.6 24 49999 489 465 465 64 <0.2- 49000 459 E9.88- 33740 45999 9299 9-15 4-4+ 465 4- 284 493- 6969 45 E&2 - BG -2D 3/29/2016 6.4 1 46200 <100 0.143 0.11 6.6 <0.1 46200 <50 <0.08 13200 <5000 14800 0.15 1.5 0.0451+ 0.211 <50 <0.1 7030 <5 <0.2 $6-21) 5{11/-2916 63 3.4 44299 489 969-9 6-2 493- 44290 <59 E8.88- 33600 45999 413-3 639 3:3 68429 9.359 459 493- 6929 253 E&2 - BG -2D 9/20/2016 6.3 0.9 47400 <100 0.283 0.11 6.5 0.0213 47400 <50 <0.08 13700 <5000 20300 0.31 0.84 0.0443 0.283 <50 <0.1 7040 2.63 <0.2 $6-29 11/16,'2916 6.6 3-4 48199 51.{53 9299 642 6 4939 48399 459 49.989 33699 45999 38999 924 1S 68559 653 Si33 49.19 7989 3.-9 E929 BG -2D 1/26/2017 6.6 1.6 51700 <100 0.211 0.12 6.5 0.0143 51700 <50 <0.08 13700 <5000 15300 0.44 1.3 0.0573 0.54 <50 <0.1 6940 3.13 <0.2 BG -2D 4/3/2017 6.4 0.02 50800 <100 <0.5 0.11 5.1 <0.1 50800 <50 <0.08 13200 <5000 14000 0.133+ 0.553+ 0.0243 0.33 52.2 <0.1 6790 2.73 <0.2 BG -3D 9/30/2015 7 8.9 18500 <100 0.291 <0.5 9.1 <0.2 18500 <50 <0.08 4410 <5000 5100 0.0473 0.513+ <0.5 0.53 443 0.143+ 1770 5.4 <0.2 BG 31) 915 6 7.35 17999 833 465 40.55 38 E8.2- 17999 459 E9.08- 4399 45900 5999 9.953 6259 49-5 &249 77 934 1779 6.6 E8.2 - BG -3D 12/16/2015 5.88 4.48 17900 <100 <0.5 0.111 9.4 <0.2 17900 <50 <0.08 4440 <5000 5300 0.091 <0.5 <0.5 0.383+ 60 0.0513 1850 4.83 <0.2 BG -3D 3/30/2016 5.9 2.8 19600 <100 0.241 0.13 9.3 0.0383 19600 <50 <0.08 4700 <5000 5500 0.042 0.573+ 0.0613 0.223 46.53 <0.1 2050 3.23 <0.2 BG 39 _ _ _ 6 1 17600 489 9.359 68893 94 9.9439 17699 459 49,88- 4729 45990 53 40.03 9.48-9 9:939 6429 459 493- 1939 34 9 E&2 - BG -3D 9/22/2016 6.1 0.55 19600 <100 <0.5 0.0693 7 0.0191 19600 <50 <0.08 3990 <5000 4700 0.056 0.54 <0.1 0.443 31.23 <0.1 1670 2.63 0.073 BG 39 11/38/2916 5.6 53 9 489 465 68479 64 0.043 J 39200 3 459 E9.08- 3889 45990 5199 9:856 6359 483- 9.28-9 450 3399 45 E&2 - BG -3D 1/26/2017 5.9 0.8 18600 58.4J <0.5 0.0733 8.3 0.0393 18600 <50 <0.08 4140 <5000 4800 0.36 2.4 0.0373 0.363 423 <0.1 1760 2.53 <0.2 BG -3D 4/5/2017 6.1 9.69 20200 131 <0.5 0.1 14.8 0.0583+ <5000 <50 <0.08 4450 <5000 5000 0.0731+ 2.21+ 0.0633+ 0.163+ 99.4 0.21 1860 3.83 <0.2 MW -202D 1/9/2012 6.11 5.75 --- --- <1 <1 11 --- --- <50 <1 --- --- --- --- <5 --- <5 1.11 --- 37 <0.05 MW -202D 5/9/2012 6.08 3.09 --- --- <1 <1 6 --- --- <50 <1 --- --- --- --- <5 --- <5 131 <1 --- 12 <0.05 MW -202D 1/9/2013 6.12 5.71 26000 --- <1 <1 6 --- --- <50 <1 3450 --- --- --- <5 --- <5 114 <1 1630 5 <0.05 MW -202D 5/8/2013 5.97 6.32 27000 --- <1 <1 5 --- --- <50 <1 3320 --- --- --- <5 --- <5 76 <1 1520 <5 <0.05 MW -202D 9/9/2013 5.64 5.13 23000 --- <1 <1 5 --- --- <50 <1 3610 --- --- --- <5 --- <5 113 <1 1670 <5 <0.05 MW -202D 5/6/2014 5.83 2.8 27000 --- <1 <1 6 --- --- <50 <13650 --- --- --- <5 --- <5 43 <1 1650 <5 <0.05 MW -202D 9/9/2014 5.69 2.05 26000 --- <1 <1 9 --- --- <50 <1 3830 --- --- --- <5 --- <5 64 <1 1750 <5 '0.05 NDuke Energy Carolinas\Statis6cs_CAMAIBTV Reports for CSAs\Belms Creek\DRAF RTables\Table 2 - Background Groundwater Datesets_BC.xlsx Page 3 of 6 TABLE 2 BACKGROUND GROUNDWATER RESULTS THROUGH APRIL 2017 BELEWS CREEK STEAM STATION DUKE ENERGY CAROLINAS, LLC, BELEWS CREEK, NC P.\Duke Energy Carolinas\Statis6cs_CAMASTV Reports for CSAs\Belms Creek\DRAF RTables\Table 2 - Background Groundwater Datesets_BC.xlsx Page 4 of 6 Analytical Parameter Methane Molybdenum Nickel Nitrate + Nitrite Potassium Selenium Sodium Strontium Sulfate Sulfide Thallium Total Dissolved Solids Total Organic Carbon Vanadium Zinc Radium (Total) Uranium (Total) Reporting Units ug/L ug/L ug/L ug-N/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L pCi/L ug/L 15A NCAC 02L Standard NE NE 100 11 NE 20 NE NE 250,000 NE 0.2* 500,000 NE 0.3* 1000 NE NE Sample ID Sample Collection Date Analytical Results Surficial MW -3 4/16/2014 ___ ___ 4.2 ___ 2.5-0 2979 ___ +5e ___ ___5+949G ___ 4{}1 ___ --- MW-3 12/16/2015 23+ 0.13 0.73 <20 '5000 <0.5 3040 J 39 <1000 <100 0.0231 53000 6390 0.62 ] 5.1 J --- --- MW-3 3/29/2016 1.6 J+ <0.5 0.65 <20 28803 <0.5 3090J 27 <1000 <100 0.0243 39000 '1000 0.38 4.73+ 0.749 0.5 MW -3 9/22/2016 <10 0.58 8.8 39 <5000 <0.5 2900J 37.9 5701 <100 0.0193 <25000 '1000 0.41 2713 1.075 0.5 MW -3 1/26/2017 <10 <0.5 0.67 <20 <5000 <0.5 2990J 35.9 8001 <100 0.0223 <25000 --- 0.57 3.93 1.237 0.5 MW -3 4/6/2017 <10 <0.5 0.79 23 J+ <5000 <0.5 3190J 39 7901 <100 <0.1 39000 --- 0.491+ 4.51 --- 0.5 WW -3 4{+3/2917 i.93 9 - - Deep BG -1D 7/14/2015 243 1.1 3.5 830 3300J <0.5 11500 49 i95ee <100 0.0243 88000 6601 0.751 7.71+ 6.56 0.231 BG -1D 9/29/2015 1.5 J+ 0.441 4.1 1300 <5000 <0.5 6570 33 5100 <100 0.0561 63000 <1000 --- 8.51 --- --- --B63B BG 19 9343 5-4 1399 F5009 40.5 6949 32 4599 E40G 9.9549 83000 41099 -1-- BG -1D 12/16/2015 1.7 J+ 1 4 1200 <5000 <0.5 6330 46 4700 <100 0.0561 74000 <1000 --- 62 --- --- BG-ID 3/29/2016 1.7 J+ 0.141 5.6 1400 3310J <0.5 6040 29.3 2800 <100J 0.021 52000 <1000 0.0941 48.8 0.1154 0.5 BG 19 5{11/2&16 -0 e 8333 45 4:3 5720 40.5 6959 344 49 1 X94 48 - �9.'3- 394 0.904 0.5 BG -1D 9/20/2016 ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ 0.21 --- __BG-19 BG 19 +1/16{2916 40.0 936-3 3-.4 1599 13300 E0.50- 8989 58-.8 3609 409 9.959-3 65889 - 9.998 3 31:9 0.4131 93 BG -1D 1/25/2017 <10 0.131 2.3 1400 -17900 <0.5 10700 49.2 6300 <100 <0.1 86000 --- 0.21 46.2 0 0.5 BG -1D 4/3/2017 <10 0.291 1.6 830 24389 <0.5 12000 71.4 11000 <100 0.0563 100000 --- 0.0931 16 0.562 0.5 BG -2D 7/9/2015 2.6 J+ 1.4 1.51+ 650 <5000 <0.5 7540 40 3200 <100 <0.1 107000 <1000 1.4 5.81 --- --- BG-2D 9/29/2015 1.6 J+ 0.82 0.58 610 <5000 0.211 6630 36 4000 <100 <0.1 109000 <1000 0.961 11 --- --- BG-2D 11/12/2015 2.5 J+ 0.93 2.3 610 <5000 <0.5 6560 34 4300 <100 <0.1 138000 <1000 13 6.91 --- --- --BG29 BG 29 015 29+ 8-67 0,74 649 '5000 40.5 6389 36 3299 499 94 129999 7800 1 6.59 BG -2D 3/29/2016 1.8 J+ 0.63 1.3 720 <5000 <0.5 6600 34 2900 <100J <0.1 96000 <1000 1.1 28.5 0.092 0.067 BG29 410 9453 -14 &78 E5009 40.5 6889 49� 213 �04 4 +e5 - 4.94 i3 9.499 03 BG -2D 9/20/2016 <10 0.53 1.1 860 <5000 <0.5 6930 41 1800 <100 0.0233 121000 <1000 1.1 24.4 0.4509 0.5 BG29 ++/16"2915 E94.& 912 -14 699 '5000 E9.59- 7+59 46.2 2899 H10G E9.1 98999 - +4 44.7 9.733 9.964 BG -2D 1/26/2017 <10 0.52 2.5 730 <5000 0.331 6880 37.8 3000 <100 0.0243 69000 --- 1.2 11.7 0.708 0.097 BG -2D 4/3/2017 <10 0.57 0.463 630 <5000 <0.5 6750 41.6 2700 <100 <0.1 96000 --- 1.2 5.41 0.05 0.083 BG -3D 9/30/2015 1.1 J+ 0.121 0.23 2100 <5000 <0.5 6840 50 6101 <100 <0.1 56000 <1000 0.473 3.31 --- --- BG39 ___ 2.3 J+ <9.5 9493 2+99 '5000 40.5 79+9 49 5593 499 94 48889 <1000 G.34-3 7,39 BG -3D 12/16/2015 1.8 J+ <0.5 0.31+ 2400 <5000 <0.5 7100 53 <1000 <100 <0.1 88000 <1000 0.73+ 9.11+ --- --- BG-3D 3/30/2016 1.6 J+ <0.5 0.471 2800 <5000 <0.5 7630 50.6 7901 <100 <0.1 48000 <1000 0.42 <10 0.381 0.5 BG 39 _ _ _ 419- er �0.5 2.4 '5000 40.5 7499 494 « 40.1 �9.1 653 - 8-47 64.9 9.625 9:-5 BG -3D 9/22/2016 <10 <0.5 <0.5 1900 <5000 <0.5 6560 48.9 7101 <100 <0.1 <25000 <1000 0.38 <10 0.665 0.5 BG 39 ++"i8J-2915 Ei0 X0.5 < .5 1890 F5000 40.5 6889 445 8793 499 �9.1 89000 - 9j2 E10- 0-13 03 BG -3D 1/26/2017 <10 <0.5 1.6 2000 <5000 <0.5 6910 46.1 6601 <100 <0.1 74000 --- 0.48 <10 0.661 0.5 BG -3D 4/5/2017 <10 <0.5 1.2 1900 <5000 <0.5 7170 52.8 5201 <100 <0.1 64000 --- 0.57 <10 0.804 0.5 MW -202D 1/9/2012 --- --- <5 --- --- <1 --- --- 3800 --- <0.2 82000 --- --- <5 --- --- MW-202D 5/9/2012 --- --- <5 --- --- <1 --- --- 2700 --- <0.2 78000 --- --- <5 --- --- MW-202D 1/9/2013 --- --- <5 --- 700 <1 7470 --- 2100 --- <0.2 71000 --- --- <5 --- --- MW-202D 5/8/2013 --- --- <5 --- 661 <1 7110 --- 2100 --- <0.2 79000 --- --- <5 --- --- MW-202D 9/9/2013 --- --- <5 --- 706 <1 7620 --- 1900 --- <0.2 70000 --- --- <5 --- --- MW-202D 5/6/2014 --- --- <5 --- 889 <1 7710 --- 2100 --- <0.2 67000 --- --- <5 --- --- MW-202D 9/9/2014 --- --- <5 --- 977 <1 7880 --- 1900 --- <0.2 80000 --- --- 6 --- --- P.\Duke Energy Carolinas\Statis6cs_CAMASTV Reports for CSAs\Belms Creek\DRAF RTables\Table 2 - Background Groundwater Datesets_BC.xlsx Page 4 of 6 TABLE 2 BACKGROUND GROUNDWATER RESULTS THROUGH APRIL 2017 BELEWS CREEK STEAM STATION DUKE ENERGY CAROLINAS, LLC, BELEWS CREEK, NC Prepared by: JHG Checked by: ALA/ LWD Notes: 54 - Indicates value omitted from dataset. - - Indicates parameter not measured or analyzed. Indicates data removed/identified as an outlier - Indicates data removed due to autocorrelation < - concentration not detected at or above the adjusted reporting limit. * - Interim Maximum Allowable Concentrations (IMACs) of the 15A NCAC 02L Standard, Appendix 1, April, 1, 2013. J - Laboratory estimated concentration. J- - Estimated concentration, biased low. J+ - Estimated concentration, biased high. ug - N/L - Micrograms nitrogen per liter NE - Not established NTU - Nephelometric turbidity unit pCi/L - picocuries per liter S.U. - Standard Unit ug/L - Micrograms per liter NA - Not applicable; sample not measured or analyzed Radium (Total) - Combined Radium -226 and Radium -228 Uranium (Total) - Combined Uranium -233, Uranium -234, Uranium -236, and Uranium -238 P:\Duke Energy Camlinas\Statisfics_CAMAIBTV Reports for CSAs\Belms Creek\DRAF RTables\Table 2 - Backgmund Gmundmter Datesets_BC.xlsx Page 5 of 6 Analytical Parameter y pH Turbidity Alkalinity Aluminum Antimony Arsenic Barium Beryllium Bicarbonate Alkalinity Boron Cadmium Calcium Carbonate Alkalinity Chloride Chromium (VI) Chromium Cobalt Copper Iron Lead Magnesium Manganese Mercury Reporting Units S. U. NTU ug/L ug/L ug/L ug/L ug/L ug/ L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L 15A NCAC 02L Standard 6.5-8.5 NE NE NE 1* 10 700 4* NE 700 2 NE NE 250,000 10 10 1* 1000 300 15 NE 50 1 Sample ID Sample Collection Date Field Parameters Analytical Results Deep MW -202D 1/6/2015 5.85 1.77726000 --- <1 <1 6 --- --- <50 <1 3850 --- --- --- <5 --- <5 17 <1 1750 <5 <0.05 MW -202D 5/5/2015 5.74 1.080 37 1.16 <1 6 <1 27000 <50 <1 3680 <5000 --- --- <5 <1 <5 35 <1 1770 <5 <0.05 MW -202D 7/16/2015 6.03 9.810 65J 0.943+ <0.5 5.3 <0.2 28900 <50 <0.08 3930 <5000 2000 --- 0.873+ <0.5 0.593+ 72 0.0673 1800 2.93 <0.2 MW -202D 10/2/2015 6.1 4.7 28800 90J <0.5 <0.5 5.7 <0.2 28800 <50 <0.08 4090 <5000 2800 --- 0.73 <0.5 0.343 130 0.073 2000 4.63 <0.2 MW -202D 12/16/2015 5.6 0.3 27800 120 <0.5 <0.5 6.3 <0.2 27800 <50 <0.08 4080 <5000 2700 0.28 1.33+ <0.5 0.373+ 160 0.0573+ 1920 5.7 <0.2 MW -202D 3/29/2016 5.7 2.1 28100 <100 <0.5 0.0563 4.5J 0.049 J+ 28100 <50 <0.08 4070 <5000 2700 0.086 0.433+ 0.0293+ 0.143 25.43 <0.1 2040 <5 <0.2 .-.W 2()29 5{30%2036 6 1 30280 409 <0.5 0�95 J 48 i 0.064 J 30200 «0 E0,88- 4339 05060 2-2 041 0-.56 0.922-9 &3;2 3 46.43 40.1 3990 -<S- <0.2 MW -202D 9/21/2016 6.3 2.25 31400 217 <0.5 0.085J 6.9 0.053J 31400 <50 <0.08 4290 <5000 2400 0.14 1.4 0.0933 1.8 249 0.16 2010 10.2 <0.2 MW 2()29 43f17/28-16 6.4 -1-.9 Bieee 906 X9.5 9.9499 64 9.938 J 3iaee F50 E0.08- 3849 E5960 2799 0-1 9.669 9.9549 6S1 437 �04 4829 6.4 E8:2 - MW -202D 1/5/2017 5.76 5.61 29600 315 <1 <1 6 -*-1- 29600 <50 <1 4370 <5000 2800 --- <5 <1 <5 253 <1 2080 <5 <0.05 .-.W 2929 --. 613 4.3 29399 53.13 E9.5- 9.9649 5.3 �94 29300 X59 E9-98- 4529 K900 2799 654 40.1 &29-3 49.79 40.1 2439 Er E9.2 - MW -202D 4/3/2017 6.1 0.7 30000 <100 <0.5 0.067J 5.1 <0.1 <5000 283 <0.08 4090 <5000 2200 0.14 0.343+ <0.1 <0.5 28.23 <0.1 1880 <5 <0.2 Bedrock BG-2BR-A 4/12/2017 7.6 2.8 81300 <100 0.283 0.42t44 0.0873 05000 <50 <0.08 25700 <5000 2500 0.052]+ 0.76 1.7 228 <0.1 3350 <0.2 MW-202BR 7/16/2015 8.0 77600 803 0.433 0.510.183 77600 373 0.0523 49iee <5000 2900 --- 4.8 <0.53 9.7 78 0.0683 3100 9.8 <0.2 MW-202BR 10/2/2015 6.5 2.2 53100 <100 <0.5 0.2430.13 53100 <50 <0.08 10300 <5000 3000 --- 1.63+ <0.5 6.5 51 0.0533 3320 7.6 <0.2 . W ;2g2B 6-.48h 48489 470 <8rr 6463062- 48489 056 E9,88- 9529 05996 2999 8.22 7 8333 6:7 450 6999-i 3969 48 e62- M W-202BR 12/16/2015 6.3 7.9 42900 913 0.41 0.261<0.2 42900 <50 0.0333 8280 <5000 2800 0.18 5.3 0.143 2.83+ 130 0.0523+ 2660 7.4 <0.2 MW-202BR 3/29/2016 6.4 6.0 32200 <100 0.183 0.28 <5 <0.1 32200 <50 <0.08 6360 <5000 3000 0.33 1.3 0.0443+ 1.2 53.6 0.11 2310 4.33 <0.2 .-.W 292BR 5{}0%2936 63 7-:4 37490 89:59 62-9 065 3.79 6823-9 37400 F50 E8.98- 7249 E5999 2.6 E8.93 547 046 4.6 356 40.1 4879 1-9 40.2- MW-202BR 9/21/2016 6.4 2.0 32700 <100 <0.5 0.34 <5 <0.1 32700 <50 <0.08 5470 <5000 2600 0.12 0.89 0.0363 0.133 273 <0.1 1930 4.43 <0.2 MW 292BR 41/-17/2916 63 26 36400 H99 64<99 0-12 <•r 9.9359 36100 050 E9.08- 5239 E5999 2800 644 49 69479 867 29.59 40.1 4949 269 <0.2 MW-202BR 1/25/2017 6.3 9.0 33900 444 0.423 0.2 3.93 <0.1 33900 <50 <0.08 6440 <5000 2900 0.19 3 0.0753 1.9 1 141 <0.1 2360 9.9 <0.2 MW-202BR 4/4/2017 6.4 3.0 40800 53.2 J 0.283 0.37 31 0.0231+ `5000 <50 <0.08 1680 <5000 2400 0.173+ 0.923+ 0.0643+ 0.73 1 27.23 <0.1 692 4.63 <0.2 Prepared by: JHG Checked by: ALA/ LWD Notes: 54 - Indicates value omitted from dataset. - - Indicates parameter not measured or analyzed. Indicates data removed/identified as an outlier - Indicates data removed due to autocorrelation < - concentration not detected at or above the adjusted reporting limit. * - Interim Maximum Allowable Concentrations (IMACs) of the 15A NCAC 02L Standard, Appendix 1, April, 1, 2013. J - Laboratory estimated concentration. J- - Estimated concentration, biased low. J+ - Estimated concentration, biased high. ug - N/L - Micrograms nitrogen per liter NE - Not established NTU - Nephelometric turbidity unit pCi/L - picocuries per liter S.U. - Standard Unit ug/L - Micrograms per liter NA - Not applicable; sample not measured or analyzed Radium (Total) - Combined Radium -226 and Radium -228 Uranium (Total) - Combined Uranium -233, Uranium -234, Uranium -236, and Uranium -238 P:\Duke Energy Camlinas\Statisfics_CAMAIBTV Reports for CSAs\Belms Creek\DRAF RTables\Table 2 - Backgmund Gmundmter Datesets_BC.xlsx Page 5 of 6 TABLE 2 BACKGROUND GROUNDWATER RESULTS THROUGH APRIL 2017 BELEWS CREEK STEAM STATION DUKE ENERGY CAROLINAS, LLC, BELEWS CREEK, NC Prepared by: JHG Checked by: ALA/ LWD Notes: 54 - Indicates value omitted from dataset. - - Indicates parameter not measured or analyzed. - Indicates data removed/identified as an outlier - Indicates data removed due to autocorrelation < - concentration not detected at or above the adjusted reporting limit. * - Interim Maximum Allowable Concentrations (IMACs) of the 15A NCAC 02L Standard, Appendix 1, April, 1, 2013. J - Laboratory estimated concentration. J- - Estimated concentration, biased low. J+ - Estimated concentration, biased high. ug - N/L - Micrograms nitrogen per liter NE - Not established NTU - Nephelometric turbidity unit pCi/L - picocuries per liter S.U. - Standard Unit ug/L - Micrograms per liter NA - Not applicable; sample not measured or analyzed Radium (Total) = Combined Radium -226 and Radium -228 Uranium (Total) = Combined Uranium -233, Uranium -234, Uranium -236, and Uranium -238 P:\Duke Energy Camlinas\Statistics_CAMASTV Reports for CSAs\Belms Creek\DRAF RTables\Table 2 - Backgmund Gmundmter Datesets_BC.xlsx Page 6 of 6 Analytical Parameter Methane Molybdenum Nickel Nitrate + Nitrite Potassium Selenium Sodium Strontium Sulfate Sulfide Thallium Total Dissolved Solids Total Organic Carbon Vanadium Zinc Radium (Total) Uranium (Total) Reporting Units ug/L ug/L ug/L ug-N/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L pCi/L ug/L 15A NCAC 02L Standard NE NE 100 11 NE 20 NE NE 250,000 NE 0.2* 500,000 NE 0.3* 1000 NE NE Sample ID Sample Collection Date Analytical Results Deep MW -202D 1/6/2015 --- --- <5 --- 782 <1 7970 --- 1900 --- <0.2 64000 --- --- <5 --- --- MW-202D 5/5/2015 --- <1 <5 --- 1010 <1 8000 --- 1800 --- <0.2 72000 --- --- <5 --- --- MW-202D 7/16/2015 1.3 J+ 0.311 1.1 J+ 160 J+ <5000 <0.5 7980 37 1200 <100 <0.1 71000 --- 4.83 763 0.357 MW -202D 10/2/2015 1.9 J+ 0.463 4 170 <5000 <0.5 8410 37 2000 <100 <0.1 95000 <1000 0.423 2.63 --- --- MW-202D 12/16/2015 1.1 J+ 0.343 2.8 140 '5000 <0.5 8060 40 1600 <100 <0.1 85000 <1000 --- 2.83 --- --- MW-202D 3/29/2016 1.7 J+ 0.243 0.6 170 <5000 <0.5 7890 35.3 1800 <100 <0.1 57000 <1000 0.33 2.93 0.0882 0.5 MW ago 5/}B/-20}6 E10 03}3 0-56 0-4-5 '5000 40.5 8470 36.2 3:9 <0.1 <0.1 94 - &37 410 0.386 0.5 MW -202D 9/21/2016 <10 0.263 1.3 550 <5000 <0.5 8500 42.3 1600 <100 <0.1 60000 <1000 0.64 <10 --- 0.5 .-W 2829 13/-17"2016 X10 032-3 9.48-3 188 E5009 �0.5 8349 39-2 3900 --109- 4 90000 ___ 034 X10 &4136 &5 MW -202D 1/5/2017 --- <1 <5 --- 817 <1 8630 43 1700 --- <0.2 100000 --- 0.56 <5 --- --- MW moo _-. 410 93+3 4.96 389 '5999 < .5 9949 42 3399 H90 4 5-2999 ___ 0-11 E10 ___ g6 MW -202D 4/3/2017 <10 0.183 <0.5 180 <5000 <0.5 8070 39.5 1600 <100 <0.1 73000 --- 0.433+ <10 0.417 0.5 Bedrock BG-2BR-A 4/12/2017 <10 1.4 32 <5000 <0.5 8640 78.3 9600 <100 <0.1 131000 --- 0.64 J+ <10 --- 7/16/2015 1.23+ 3.7 0.83 150 5150 0.443 12000 100 9600 <100 <0.1 133000 6703 13 MW-202BR 10/2/2015 1.6 J+ 2.3 0.98 170 27003 <0.5 10600 65 5300 <100J <0.1 87000 <1000 0.823 413+ --- tO.MW-202BR -.,.--�roR ___ i:9 -4F 2 9� 359-3+ 2549 1 <85 39390 59 5499 H9&4 89999 X1890 0313 22 MW-202BR 12/16/2015 1.53+ 1.5 3.2 130 <5000 <0.5 9940 52 3900 <100 <0.1 101000 7203 0.593 16 --- --- MW-202BR 3/29/2016 1.6 J+ 1.2 0.68 120 <5000 <0.5 8860 37 4900 <100 <0.1 67000 10200 0.56 52.1 0.0151 0.095 MW 202BR 5/fOJ-2936 410 2.4 31 9-96 4i9&9 40.5 leeee 363 5 4 5 93 - 1S 43 937 931 MW-202BR 9/21/2016 <10 0.73 1 130 <5000 <0.5 9520 35.4 3700 <100 <0.1 74000 <1000 0.55 <10 --- 0.078 ,qW 2g;2 -BR 13/17}2035 410 967 0,54 439 '3909 40.5 8940 35.1 3699 H99 <0.1 9389e --- 9-.46 410 9.37-2 9.982 MW-202BR 1/25/2017 <10 0.7 1.8 150 <5000 <0.5 9780 38.5 3200 <100 <0.1 52000 --- 0.7 6.7J --- 0.12 MW-202BR 4/4/2017 <10 0.81 0.673+ 1603+ <5000 <0.5 3590J 37.8 3000 <100 <0.1 73000 --- 0.48 43+ 0.466 0.065 Prepared by: JHG Checked by: ALA/ LWD Notes: 54 - Indicates value omitted from dataset. - - Indicates parameter not measured or analyzed. - Indicates data removed/identified as an outlier - Indicates data removed due to autocorrelation < - concentration not detected at or above the adjusted reporting limit. * - Interim Maximum Allowable Concentrations (IMACs) of the 15A NCAC 02L Standard, Appendix 1, April, 1, 2013. J - Laboratory estimated concentration. J- - Estimated concentration, biased low. J+ - Estimated concentration, biased high. ug - N/L - Micrograms nitrogen per liter NE - Not established NTU - Nephelometric turbidity unit pCi/L - picocuries per liter S.U. - Standard Unit ug/L - Micrograms per liter NA - Not applicable; sample not measured or analyzed Radium (Total) = Combined Radium -226 and Radium -228 Uranium (Total) = Combined Uranium -233, Uranium -234, Uranium -236, and Uranium -238 P:\Duke Energy Camlinas\Statistics_CAMASTV Reports for CSAs\Belms Creek\DRAF RTables\Table 2 - Backgmund Gmundmter Datesets_BC.xlsx Page 6 of 6 TABLE 3 UNSATURATED BACKGROUND SOIL DATA SUMMARY BELEWS CREEK STEAM STATION DUKE ENERGY CAROLINAS, LLC, BELEWS CREEK, NC Prepared by: IHG Checked by: BDR Notes: 54 - Indicates values omitted from dataset. --- - Not applicable; non -detect concentration greater than PSRG Protection of Groundwater; value omitted - Indicates data removed /identified as an outlier < - Results not detected at concentrations which equal the laboratory's method reporting limit. B - Target analyte detected in method blank at or above the reporting limit. Target analyte concentration in sample is less than SOX the concentration in the method blank. j - Estimated concentration above the adjusted method detection limit and below the adjusted reporting limit. j- - Estimated concentration, biased low. j+ - Estimated concentration, biased high. M - Matrix spike / matrix spike duplicate failure. mg/kg - milligrams per kilogram NE - Not established PSRG Protection of Groundwater - NCDEQ IHSB Preliminary Soil Remediation Goals Table - October 2016 S.U. - Standard Units P:1Duke Energy CarolinaslStalis6ts-CAMAIBTV Reports for CSAsSelen CreekIDRAFTUableffable 3 - Background Soil Dataset -BC Page 1 of 1 Analytical Parameter pH Aluminum Antimony Arsenic Barium Beryllium Boron Cadmium Calcium Chloride Chromium Cobalt Copper Iron LeadLMagnesium Manganese Mercury Molybdenum Nickel Nitrate(as Potassium Selenium Sodium Strontium Sulfate Thallium Vanadium Zinc Reporting Units S.U. mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg PSRG Protection of Groundwater NE NE 0.9 5.8 580 63 45 3 NE NE 360,000 0.9 700 150 270 65 1 NE 130 NE NE 2.1 NE NE NE 0.28 6 1200 Sample ID Sample Collection Date Analytical Results 3G -1D (1-2) 3/26/2015 4.8 j 17400 --- 34.6 41.5 <15.5 0.89 -8-37- 1311 .305 28.7 1.7 j 11.9 38100 21.1 249 57.6 0.046 <3.1 1.3 j F30:5j 348 --- <311 1.9 j 365- --- 54.9 13.2 BG -1D (11) 3/27/2015 5.7 j 5490 --- 10.9 26.6 12.2 j 0.68 10,47- <195 -.396- 4.7 28.6 j- 4.5 12200 77.3 j- 677 1010 0.0063 j 8.9 12 c39:6j 540 --- <390 <3.9 396- --- 14.2 28.1 BG -1D (21) 3/27/2015 5.4 j 6210j+ --- 7.5 50 13.2 j 0.88 <-8-47- <197 -.4043- 2.3 6.8 3.5 12400j+ 25.9 836 257j+ .0.01 <3.9 2.1 i40 -j 567 2.2 j <393 <3.9 E408- --- 16 31.6 BG -1D (31) 3/27/2015 5.6 j 12700 --- 30:7 42.3 38fi 2.8 <0:42- <174 -.358- 17.1 37.9 9.8 40400 17.1 3300 871 <0.01 <3.5 c35.8 -j 876 2.9 j .347 <3.5 1356- --- 50.9 85-4 BG -2D (1-2) 3/23/2015 5.5 j 13800 --- 3.3 j 25.1 <18.9 0.32 j .-43,45 428 -.363 8.5 --- 7.6 24100 18.7 678 53.1 0.064 <3.8 <1.9 36:3j 199 j --- <378 <3.8 -.363- --- 46.6 10.5 BG -2D (10-12) 3/24/2015 5j 9670 --- 2.7 j 70.7 34.S j 0.86 <0:42- <173 j -.352- 5.3 5.5 6.1 32300 21.7 1060 245 0.015 <3.5 j <1.7 1 F353 -j 163 j 3j <346 <3.5 j --- 105 14.2 BG -2D (20-22) 3/24/2015 5.1 j 6680 --- <3.7 88.9 <18.5 0.29 j <&45 <185 j 367- <1.9 j 5 4.8 9570 11.3 1090 450 <0.01 <3.7 j <1.9 3671 949 --- <371 <3.7 j 367- --- 20 39.1 BG -2D (30-32) 3/24/2015 5.2 j 7530 --- <4 91.9 <20.1 0.33 j <0-:48- <201j 1403 <2j 5 1.8 j 13000 6.6 1500 660 <0.01 <4j <2 *40.31 1240 --- <402 <4j <403 --- 27 20.1 BG -3S (1-2) 5/12/2015 5.4 j 14800 --- --- 29.9 14j 0.37 <-8,7-7- 158j 323 15.9 --- 12.9 27800 26.6 238 39.6 0.031 <3.2 4.1 3341 343 --- <320 <3.2 323 --- 60 8.4 BG -3S (10-12) 5/12/2015 4.9 j 10000 --- --- 32.3 20.9 0.75 10-91- <189 -.362- 21.5 15.6 14.3 44200 6.2 j 647 513 0.0095 j <3.8 4.5 1363-j <379 --- <379 <3.8 --- 141 21.2 BG -3S (20-22) 5/12/2015 5 j 9280 --- --- 68.4 16.6 0.76 *G-7-3- <152 308- 15.4 8.1 28.5 36800 14.4 2620 216 <0.0097 <3 9.8 1 38Sj 2360 --- <304 <3 308- --- 55.3 48.5 GWA-3D (34-35.5) 5/4/2015 7-1 7610 --- --- 108 <19.3 0.97 1&43 jJO1A -.366- 1.1 j --- 2 9110 6.4 j 2080 460 <0.012 <3.9 j 1.1 j 136:6] 1440 --- <386j .666- --- 16.4 29.6 GWA 4S (45-47) 3/5/2015 641 4830 --- <2.8 79.5 1 5 0.52 <0-33 599 -284 1 j+ 2.2 j 2.8 7760 15.6 1320 383 <0.01 <0.56 1.1 <28,41 1060 --- 49.2 j 4.3 --- 9.4 20.3 GWA-12D (10-12) 4/15/2015 5.6 j 4320 --- --- 26.6 <15.4 0.31 10,74 <154 j 345 <1.5 j 6.5 0.96 j 13.2 287 296 <0.0097 j <3.1 <1.5 j c3l.5 j 313 --- <308 j <3.1 j--- --- 8.5 GWA-12D (15-17) 4/15/2015 5.4 j 14300 --- <5.6 98.6 <13.9 0.39 -.8.67- <139 j 3 81 <1.4 j 2.9 j 1.8 7740 19.9 5180 187 <0.0092 j <2.8 <1.4 j <2$.1j 4236 --- <279j <2.8 j --- 6 .6 67 4 GWA-12D (20-22) 4/15/2015 5.3 j 11900 --- --- 90.7 <14.5 0.43 10-69- <145 j 1285- 0.97 j 3.5 j 9.1 7870 14.7 3230 135 <0.009 j <2.9 0.79 j 128-.5j 2830 --- <289j <2.9 j --- 8.2 43.6 GWA-12D (25-27) 4/15/2015 --- 12200 --- --- 82.5 <19.6 0.59 <& 4 9 <196j .402- 4.7 4.5 j 11.3 9790 12.8 3070 247 <0.013 j <3.9 1.1 j .48:2-j 33i8 --- <393j <3.9 j --- 10.6 43.6 BGSB-01 (1-2) 07/26/2017 4.8 33000 <0.46 59-B 38 1.6 <6.1 <0.023 170 j 3.4 j 37 3.5 20 49000 29 610 j 66 B 0.061 j 0.98 j 7.8 0.3 750 1.5 37 j 2.5 j <12 0.38 64 19 BGSB-01 (5-7) 07/26/2017 4.6 17000 <0.47 22-B 18 1.6 <2.4 <0.023 58j 1.9 j 19 1.1 15 21000 44 490 39 B <0.092 <1.9 6.4 0.089 j 650 0.84 j 32 j 0.82 j <12 0.15 42 15 BGSB-01 (10-12) 07/26/2017 4.7 15000 <0.6 9.1 B 47 1.4 <1.6 <0.03 27j 1.2 j 6.9 5.8 5.2 12000 33 590 180 B <0.091 0.56 j 3.8 0.1 j 620 1 j <160 0.76 <12 0.39 13 23 BGSB-01 (15-17) 07/26/2017 5.0 13000 <0.4 5.6 B 46 1.3 <3.8 <0.02 54j <12 6.7 16 3.2 8700 30 610 230 B <0.091 <3 3.7 0.074 j 870 1.9 <380 1.9 <12 0.66 9.8 26 BGSB-01 (20-22) 07/26/2017 4.8 24000 <0.52 6.3 B 62 1.3 1.2 j <0.026 I <280 <11 5 21 5.2 11000 22 900 250 <0.09 M 0.97 j 6.2 <0.23 1900 1.5 <280 2.8 <11 M 0.6 8.6 44 BGSB-02 (1-2) 07/26/2017 4.9 16000 <0.37 3.9 B 14 0.28 <2.8 <0.019 380 4.2 j 10 1.8 8.8 22000 14 540 59 B <0.1 <2.2 2j 0.32 280 0.71 j .280 1.5 8j 0.14 65 13 BGSB-02 (10-12) 07/26/2017 4.6 13000 <0.51 0.5 j,B 27 0.27 <10 <0.026 11000 <12 1.1 j 4.8 3.6 11000 12 680 j 110 B <0.092 <8A <8.1 <0.23 440j 1.8 .IGH <4 <12 0.066 j 35 8.1 j BGSB-02 (15-17) 07/26/2017 5.0 12000 <0.45 0.54 B 42 0.37 <17 0.025 260 j <11 2.6 j 7.2 10 12000 22 1000j 490 <0.087 <13 <13 <0.23 730j 2.7 280 j <6.7 <11 0.19 24 23 BGSB-02 (20-22) 07/26/2017 5.0 21000 <0.57 1.2 B 70 0.51 <22 <0.029 450j <12 7.8 7.2 19 17000 20 1400j 480 <0.097 <18 <18 0.076 j 710j 4.5 360j <9 <12 0.26 35 22 BGSB-02 (25-27) 07/26/2017 5.0 30000 <0.38 0.85 B 140 0.57 <23 <0.019 300j <12 1.2 j 6.2 9.2 14000 7.2 1400j 490 <0.089 139 <19 0.073 j 990j 4.1 340j <9.3 <12 0.27 18 20 j BGSB-02 (30-32) 07/26/2017 5.3 17000 <0.38 0.77 B 71 0.47 <8.8 0.033 200j <12 3.6 17 4.8 14000 17 1700j 550 B <0.1 <7.1 <7.1 0.08 j 880 2.2 1880 <7.1 <12 0.34 23 15 BGSB-03 (1-2) 07/26/2017 5.0 17000 <0.41 3.2 B 22 0.39 <3.7 0.032 230 <11 20 1.4 9.5 22000 11 350 42 B <0.09 0.5 j 2.5 j 0.084 j 440 0.56 j <190 1.7 <11 0.1 j 37 14 BGSB-03 (5-7) 07/26/2017 5.0 17000 <0.3 2.8 B 38 0.56 <2.3 <0.015 47j 1.8 j 5.1 6.7 9.9 9800 29 530 170 B <0.082 0.81 j 5.8 0.09 j 840 0.96 <230 0.33 j <11 0.27 28 24 BGSB-03 (10-12) 07/26/2017 5.2 23000 <0.39 2.2 B 64 0.66 <13 <0.02 11300 <12 27 31 13 25000 12 2100 540 B <0.1 <10 6.1 j 0.079 j 1500 2.8 <4300 <5 <12 0.32 95 27 BGSB-03 (15-17) 07/26/2017 4.9 15000 <0.43 3.6 B 82 1.1 <12 0.032 <1200 <14 4.4 32 15 16000 13 2100 470 B <0.1 <9.6 4.5 j <0.27 1200 5 .1200 <4.9 <14 0.65 99 21 BGSB-03 (20-22) 07/26/2017 4.9 19000 M 0.14 j 4.9 B 53 5.9 <10 M 0.013 j <-100&M <14 43 M 22 23 M 51000 M 9.8 1100 630 B,M <0.11 <8.2 M 5.1 j 0.083 j 590j 2.5 <1000 <4.1 <14 0.2 280 34 M GWASB-12 (5-7) 07/26/2017 4.4 11000 <0.42 M 6.7 B 16 0.36 <2.1 <0.021 110 j 2.2 j 9.4 1 9.6 11000 15 320 43 B <0.096 1.2 j 1.5 j 0.11 j,M 360 1.1 <210 1 <13 M 0.14 20 M 13 GWASB-12 (10-12) 07/26/2017 4.6 8500 0.09 j 3.2 B 20 0.42 <2.9 <0.019 200j 7j 6.8 2 8.4 7100 16 360 130 B <0.096 1.1 j 1.2 j 2" 410 1.7 <290 1.6 8.7 j,M 0.099 j 12 12 GWASB-12 (15-17) 07/26/2017 5.0 14000 <0.31 3.2 B 51 0.53 <9.2 <0.015 1920 <12 3.1 7 4.4 7200 14 440j 200 B <0.089 <7.4 <7.4 0.072 j 470j 2.8 1920 13.7 <12 0.22 12 14 GWASB-12 (20-22) 07/26/2017 5.1 14000 <0.36 2 B 30 0.48 <42 0.016 j 570j 1.2 j 6.6 j 2.7 8.1 j 9900 21 1500j 380 <0.098 134 34 0.078 j 1200j 7-7 630i 117 <12 0.17 8.4 16 j GWASB-12 (25-27) 07/26/2017 5.5 14000 <0.32 1.2 B 46 0.59 <23 <0.016 290j <12 5.9 6.1 5.8 9500 12 810 j 230 B <0.099 <9.1 <9.1 0.079 j 650 j 5.1 .1100 <9.1 <12 0.16 9.9 13 Prepared by: IHG Checked by: BDR Notes: 54 - Indicates values omitted from dataset. --- - Not applicable; non -detect concentration greater than PSRG Protection of Groundwater; value omitted - Indicates data removed /identified as an outlier < - Results not detected at concentrations which equal the laboratory's method reporting limit. B - Target analyte detected in method blank at or above the reporting limit. Target analyte concentration in sample is less than SOX the concentration in the method blank. j - Estimated concentration above the adjusted method detection limit and below the adjusted reporting limit. j- - Estimated concentration, biased low. j+ - Estimated concentration, biased high. M - Matrix spike / matrix spike duplicate failure. mg/kg - milligrams per kilogram NE - Not established PSRG Protection of Groundwater - NCDEQ IHSB Preliminary Soil Remediation Goals Table - October 2016 S.U. - Standard Units P:1Duke Energy CarolinaslStalis6ts-CAMAIBTV Reports for CSAsSelen CreekIDRAFTUableffable 3 - Background Soil Dataset -BC Page 1 of 1 TABLE 4 BACKGROUND SHALLOW FLOW ZONE STATISTICS RESULTS BELEWS CREEK STEAM STATION DUKE ENERGY CAROLINAS, LLC, BELEWS CREEK, NC Parameter Reporting Unit Number of Background Wells Number of Samples Number of NDs Percent NDs Distribution Coverage (%) Confidence Level 070 UTL pH S. U. 4 39 0 0 Normal 95 95 5.1 - 6.0 Alkalinity mg/L 4 33 0 0 Gamma 95 95 22.9 Aluminum pg/L 4 24 4 17 Gamma 95 95 860 Antimony pg/L 4 40 36 90 Non -Parametric 85 95 1 Arsenic pg/L 4 40 30 75 Non -Parametric 85 95 1 Barium pg/L 4 37 0 0 Non -Parametric 85 95 58 Beryllium pg/L 4 23 3 13 Normal 95 95 0.362 Bicarbonate mg/L 4 24 3 13 Normal 95 95 22.3 Boron pg/L 4 40 40 100 NA NA NA 50 Cadmium pg/L 4 40 34 85 Non -Parametric 85 95 1 Calcium mg/L 4 31 0 0 Non -Parametric 85 95 3.69 Carbonate mg/L 4 24 24 100 NA NA NA 5 Chloride mg/L 4 25 0 0 Non -Parametric 85 95 15 Chromium (VI) pg/L 4 18 0 0 Normal 95 95 1.75 Chromium pg/L 4 39 16 41 Gamma 95 95 4.72 Cobalt pg/L 4 27 6 22 Normal 95 95 0.509 Copper pg/L 4 40 20 50 Gamma 95 95 2.7 Iron pg/L 4 39 2 5 Non -Parametric 85 95 750 Lead pg/L 4 40 25 63 Non -Parametric 85 95 1 Magnesium mg/L 4 33 0 0 Non -Parametric 85 95 3.41 Manganese pg/L 4 40 12 30 Normal 95 95 27.9 Mercury pg/L 4 40 39 98 NA NA NA 0.2 Methane pg/L 4 22 9 41 Normal 95 95 2.65 Molybdenum pg/L 4 24 16 67 Non -Parametric 85 95 1.00 Nickel pg/L 4 40 20 50 Lognormal 95 95 4.26 Nitrate + Nitrite mg-N/L 4 22 4 18 Normal 95 95 3.63 Potassium mg/L 4 33 21 64 Non -Parametric 85 95 5 Selenium pg/L 4 40 39 98 NA NA NA 0.5 Sodium mg/L 4 33 0 0 Non -Parametric 85 95 5.92 Strontium pg/L 4 23 0 0 Normal 95 95 56.5 Sulfate mg/L 4 37 9 24 Gamma 95 95 1.93 Sulfide mg/L 4 22 22 100 NA NA NA 0.1 TDS mg/L 4 40 5 13 Normal 95 95 84.8 Thallium pg/L 4 37 26 70 Non -Parametric 85 95 0.2 TOC mg/L 4 15 14 93 NA NA NA 1 Vanadium pg/L 4 26 5 19 Gamma 95 95 1.36 Zinc pg/L 4 39 23 59 Non -Parametric 85 95 10 Radium (Total) pCi/L 4 14 0 0 Non -Parametric 85 95 8.74 Uranium (Total) pg/mL 4 16 0 0 1 Non -Parametric 85 95 0.0005 Prepared by: JHG Checked by: ALA Notes: Background wells: BG -2S, BG -3S, MW -202S, and MW -3 mg/L = milligrams per liter mg - N/L = Milligrams nitrogen per liter NA = Not applicable; dataset contains >90 percent NDs NO = Non -detect concentration pCi/L = picocuries per liter Radium (Total) = Radium -226 and Radium -228 combined S.U. = Standard Units TDS = Total Dissolved Solids TOC = Total Organic Carbon pg/L = micrograms per liter pg/mL = micrograms per milliliter UTL = Upper Tolerance Limit Uranium (Total) = Uranium -233, Uranium -234, Uranium -236, and Uranium -238 combined P:1Duke Energy Carolinas\Stafisfics_CAMAIBTV Reports for CSAstelews CreekTRAFTTablestTable 4- Statistical Analysis Results-Shallow-BC.xlsx Page 1 of 1 TABLE 5 BACKGROUND DEEP FLOW ZONE STATISTICS RESULTS BELEWS CREEK STEAM STATION DUKE ENERGY CAROLINAS, LLC, BELEWS CREEK, NC Parameter Reporting Unit Number of Background Wells Number of Samples Number of NDs Percent NDs Distribution Coverage (%) Confidence Level (%) UTL pH S. U. 4 37 0 0 Parametric 95 95 5.2-7.0 Alkalinity mg/L 4 34 0 0 Gamma 95 95 63.7 Aluminum pg/L 4 27 17 63 Non -Parametric 85 95 140 Antimony pg/L 4 36 23 64 Non -Parametric 85 95 1 Arsenic pg/L 4 36 19 53 Non -Parametric 85 95 1 Barium pg/L 4 35 0 0 Gamma 95 95 12.6 Beryllium pg/L 4 26 13 50 Gamma 95 95 0.219 Bicarbonate mg/L 4 28 2 7 Parametric 95 95 62.9 Boron pg/L 4 36 33 92 NA NA NA 50 Cadmium pg/L 4 36 29 81 Non -Parametric 85 95 0.08 Calcium mg/L 4 34 0 0 Non -Parametric 85 95 13.2 Carbonate mg/L 4 28 28 100 NA NA NA 5 Chloride mg/L 4 27 0 0 Gamma 95 95 20.9 Chromium (VI) pg/L 4 21 2 10 Parametric 95 95 0.411 Chromium pg/L 4 36 12 33 Gamma 95 95 3.3 Cobalt pg/L 4 28 10 36 Non -Parametric 85 95 1.6 Copper pg/L 4 36 12 33 Non -Parametric 85 95 5 Iron pg/L 4 34 3 9 Gamma 95 95 240 Lead pg/L 4 36 23 64 Non -Parametric 85 95 1 Magnesium mg/L 4 34 0 0 Non -Parametric 85 95 6.94 Manganese pg/L 4 36 10 28 Non -Parametric 85 95 55 Mercury pg/L 4 36 35 97 NA NA NA 0.2 Methane pg/L 4 25 10 40 Parametric 95 95 2.64 Molybdenum pg/L 4 28 5 18 Parametric 95 95 1.3 Nickel pg/L 4 36 12 33 Parametric 95 95 4.67 Nitrate + Nitrite mg-N/L 4 26 0 0 Gamma 95 95 4.19 Potassium mg/L 4 32 22 69 Non -Parametric 85 95 5 Selenium pg/L 4 36 33 92 NA NA NA 0.5 Sodium mg/L 4 33 0 0 Non -Parametric 85 95 10.7 Strontium pg/L 4 27 0 0 Gamma 95 95 68.5 Sulfate mg/L 4 34 1 3 Gamma 95 95 6.35 Sulfide mg/L 4 26 26 100 NA NA NA 0.1 TDS mg/L 4 35 1 3 Gamma 95 95 148 Thallium pg/L 4 36 29 81 Non -Parametric 85 95 0.2 TOC mg/L 4 18 17 94 NA NA NA 1 Vanadium pg/L 4 27 4 15 Parametric 95 95 1.45 Zinc pg/L 4 36 15 42 Log Parametric 95 95 43.2 Radium (Total) pCi/L 4 14 0 0 Parametric 95 95 1.1 Uranium (Total) pg/mL 4 16 0 0 1 Non -Parametric 85 95 0.5 Prepared by: JHG Checked by: ALA Notes: Background wells: BG -SD, BG -2D, BG -3D, and MW -202D mg/L = milligrams per liter mg - N/L = Milligrams nitrogen per liter NA = Not applicable; dataset contains >90 percent NDs NO = Non -detect concentration pCi/L = picocuries per liter Radium (Total) = Radium -226 and Radium -228 combined S.U. = Standard Units TDS = Total Dissolved Solids TOC = Total Organic Carbon pg/L = micrograms per liter pg/mL = micrograms per milliliter UTL = Upper Tolerance Limit Uranium (Total) = Uranium -233, Uranium -234, Uranium -236, and Uranium -238 combined P:1Duke Energy Carolinas\Stafisfics_CAMASTV Reports for CSAstelews CreekIDRAFRTables\Table 5- Statistical Analysis Results_ Deep_BC.xlsx Page 1 of 1 TABLE 6 BACKGROUND BEDROCK STATISTICS RESULTS BELEWS CREEK STEAM STATION DUKE ENERGY CAROLINAS, LLC, BELEWS CREEK, NC Parameter Reporting Unit Number of Background Wells Number of Samples Number of NDs Percent NDs Distribution Coverage (%) Confidence Level 0/0Maximum Concentration pH S.U. 2 6 0 0 --- --- --- 6.3 - 6.5 Alkalinity mg/L 2 8 0 0 --- --- --- 81.3 Aluminum pg/L 2 7 4 57 --- --- --- 100 Antimony pg/L 2 8 2 25 --- --- --- 0.5 Arsenic pg/L 2 8 0 0 --- --- --- 0.51 Barium pg/L 2 7 2 29 --- --- --- 6.2 Beryllium pg/L 2 8 4 50 --- --- --- 0.2 Bicarbonate mg/L 2 6 0 0 --- --- --- 77.6 Boron pg/L 2 8 7 88 --- --- --- 50 Cadmium pg/L 2 8 6 75 --- --- --- 0.08 Calcium mg/L 2 6 0 0 --- --- --- 10.3 Carbonate mg/L 2 8 8 100 --- --- --- 5 Chloride mg/L 2 8 0 0 --- --- --- 3 Chromium (VI) pg/L 2 6 0 0 --- --- --- 0.33 Chromium pg/L 2 7 0 0 --- --- --- 5.3 Cobalt pg/L 2 8 2 25 --- --- --- 0.76 Copper pg/L 2 8 0 0 --- --- --- 9.7 Iron pg/L 2 8 0 0 --- --- --- 228 Lead pg/L 2 8 4 50 --- --- --- 0.11 Magnesium mg/L 2 7 0 0 --- --- --- 3.35 Manganese pg/L 2 7 0 0 --- --- --- 9.9 Mercury pg/L 2 8 8 100 --- --- --- 0.2 Methane pg/L 2 8 4 50 --- --- --- 10 Molybdenum pg/L 2 8 0 0 --- --- --- 3.7 Nickel pg/L 2 7 0 0 --- --- --- 3.2 Nitrate + Nitrite mg-N/L 2 8 0 0 --- --- --- 0.17 Potassium mg/L 2 8 6 75 --- --- --- 5.15 Selenium pg/L 2 8 7 88 --- --- --- 0.5 Sodium mg/L 2 8 0 0 --- --- --- 12 Strontium pg/L 2 8 0 0 --- --- --- 100 Sulfate mg/L 2 8 0 0 --- --- --- 9.6 Sulfide mg/L 2 8 8 100 --- --- --- 0.1 TDS mg/L 2 8 0 0 --- --- --- 133 Thallium pg/L 2 8 8 100 --- --- --- 0.1 TOC mg/L 2 5 2 40 --- --- --- 10.2 Vanadium pg/L 2 7 0 0 --- --- --- 0.82 Zinc pg/L 2 6 2 33 --- --- --- 16 Radium (Total) pCi/L 2 2 0 0 --- --- --- 0.466 Uranium (Total) pg/mL 2 5 0 0 --- --- --- 0.00054 Prepared by: JHG Checked by: ALA Notes: Background wells: BG-2BR-A and MW-202BR Not applicable; dataset contains <10 valid samples mg/L = milligrams per liter mg - N/L = Milligrams nitrogen per liter NO = Non -detect concentration pCi/L = picocuries per liter Radium (Total) = Radium -226 and Radium -228 combined S.U. = Standard Units TDS = Total Dissolved Solids TOC = Total Organic Carbon pg/L = micrograms per liter pg/mL = micrograms per milliliter Uranium (Total) = Uranium -233, Uranium -234, Uranium -236, and Uranium -238 combined P:1Duke Energy CarolinaslStatistics_CAMMBTV Reports for CSAslBelews CreeMDRAFTJablesJable 6 - Statistical Analysis Results_ Bedrock_ BC Page 1 of 1 TABLE 7 BACKGROUND SOIL STATISTICS RESULTS BELEWS CREEK STEAM STATION DUKE ENERGY CAROLINAS, LLC, BELEWS CREEK, NC Parameter Reporting Unit Number of Samples Number of NDs Percent NDs Distribution Coverage (moo) Confidence Level (%) UTL pH S.U. 35 0 0 Normal 95 95 4.3-5.8 Aluminum mg/kg 38 0 0 Gamma 95 95 31,253 Antimony mg/kg 21 19 90 NA NA NA 1 Arsenic mg/kg 26 4 15 Gamma 95 95 12.6 Barium mg/kg 38 0 0 Gamma 95 95 139 Beryllium mg/kg 37 19 51 Non -Parametric 85 95 1.7 Boron mg/kg 36 9 25 Non -Parametric 85 95 22 Cadmium mg/kg 21 15 71 Non -Parametric 85 95 0.032 Calcium mg/kg 32 13 41 Non -Parametric 85 95 450 Chloride mg/kg 21 13 62 Non -Parametric 85 95 14 Chromium mg/kg 38 4 11 Gamma 95 95 41.1 Cobalt mg/kg 35 0 0 Lognormal 95 95 51 Copper mg/kg 38 0 0 Gamma 95 95 28.4 Iron mg/kg 37 0 0 Non -Parametric 85 95 40,400 Lead mg/kg 37 0 0 Gamma 95 95 39.7 Magnesium mg/kg 37 0 0 Gamma 95 95 3,600 Manganese mg/kg 37 0 0 Gamma 95 95 1,117 Mercury mg/kg 38 31 82 Non -Parametric 85 95 0.1 Molybdenum mg/kg 35 27 77 Non -Parametric 85 95 9.8 Nickel mg/kg 36 13 36 Gamma 95 95 11.6 Nitrate (as N) mg/kg 19 4 21 Non -Parametric 85 95 0.3 Potassium mg/kg 35 1 3 Gamma 95 95 2,114 Selenium mg/kg 23 0 0 Normal 95 95 5.44 Sodium mg/kg 31 24 77 Non -Parametric 85 95 393 Strontium mg/kg 37 25 68 Non -Parametric 85 95 9 Sulfate mg/kg 20 19 95 NA NA NA 12 Thallium mg/kg 21 0 0 Gamma 95 95 0.852 Vanadium mg/kg 36 1 3 Gamma 95 95 127 Zinc mg/kg 36 0 0 Gamma 95 95 51.8 Prepared by: JHG Checked by: ALA Notes: mg/kg = milligrams per kilogram NA = Not applicable; dataset contains <4 detected concentrations ND = Non -detect concentration S.U. = Standard Unit UTL = Upper Tolerance Limit P:1Duke Energy CarolinaslStatistics_CAMAIBTV Reports for CSAsSelews CreeMDRAFT7ables7able 7 - Statistical Analysis Result_Soil_BC Page 1 of 1 TABLE 8 GROUNDWATER PROVISIONAL BACKGROUND THRESHOLD VALUES BELEWS CREEK STEAM STATION DUKE ENERGY CAROLINAS, LLC, BELEWS CREEK, NC Parameter Reporting Unit NCAC 02L Standard Provisional Background Threshold Values Shallow Deep Bedrockt pH* S.U. 6.5-8.5 5.1-6.0 5.2-7.0 6.3-6.5 Alkalinity mg/L NE 22.9 63.7 81.3 Aluminum pg/L NE 860 140 100 Antimony ug/L 16 1 1 0.5 Arsenic pg/L 10 1 1 0.51 Barium ug/L 700 58 12.6 6.2 Beryllium pg/L 4A 0.362 0.219 0.2 Bicarbonate mg/L NE 22.3 62.9 77.6 Boron pg/L 700 50 50 50 Cadmium ug/L 2 1 1 0.08 Calcium mg/L NE 3.69 13.2 10.3 Carbonate mg/L NE 5 5 5 Chloride mg/L 250 15 20.9 3 Chromium (VI) Ng/L NE 1.75 0.411 0.33 Chromium pg/L 10 4.72 3.3 5.3 Cobalt Ng/L 1A 0.509 1.6 0.76 Copper pg/L 1000 2.7 5 9.7 Iron Ng/L 300 750 240 228 Lead pg/L 15 1 1 0.11 Magnesium mg/L NE 3.41 6.94 3.35 Manganese pg/L 50 9.9 Mercury ug/L 1 0.2 0.2 0.2 Methane pg/L NE 2.65 2.64 10 Molybdenum Ng/L NE 1 1.3 3.7 Nickel pg/L 100 4.26 4.67 3.2 Nitrate + Nitrite mg-N/L 11 3.63 4.19 0.17 Potassium mg/L NE 5 5 5.15 Selenium pg/L 20 0.5 0.5 0.5 Sodium mg/L NE 5.92 10.7 12 Strontium Ng/L NE 56.5 68.5 100 Sulfate mg/L 250 1.93 6.35 9.6 Sulfide mg/L NE 0.1 0.1 0.1 TDS mg/L 500 84.8 148 133 Thallium pg/L 0.2° 0.2 0.2 0.1 TOC mg/ L NE 1 1 10.2 Vanadium pg/L 0.3° 1.45 0.82 Zinc pg/L 1000 10 43.2 16 Radium (Total) pCi/L NE 8.74 1.1 0.466 Uranium (Total) I pg/mL I NE 1 0.0005 1 0.0005 0.0005 Prepared by: JHG Checked by: ALA Notes: -The updated values for manganese (shallow), manganese (deep), and vanadium (shallow) are based upon ongoing statistical evaluation since September 1, 2017 (Zimmerman To Draovitch; Appendix A) and have not yet been approved by NCDEQ." t - Indicates dataset contains less than 10 valid samples * - Upper and lower tolerance limits calculated for parameter A - Interim Maximum Allowable Concentrations (IMACs) of ISA NCAC .021- Standard, Appendix 1, April 1, 2013 mg/L - milligrams per liter mg - N/L = Milligrams nitrogen per liter TDS - Total Dissolved Solids NO - Not Detected TOC = Total Organic Carbon NE - Not Established pg/L - micrograms per liter pCi/L - picocuries per liter pg/mL - micrograms per milliliter Radium (Total) - Radium -226 and Radium -228 combined Uranium (Total) - Uranium -233, Uranium -234, Uranium -236, and Uranium -238 cor S.U. - Standard Unit ROuke Energy Carolinas\Statistics_CAMAIBTV Reports for CSAs\Belews CreecDRAF ITables7able 8- Provisional Background Groundwater Threshold Values.xlsx Page 1 of 1 TABLE 9 PROVISIONAL BACKGROUND THRESHOLD VALUES FOR SOIL BELEWS CREEK STEAM STATION DUKE ENERGY CAROLINAS, LLC, BELEWS CREEK, NC Parameter Reporting Unit PSRG Protection of Groundwater BTV pH* S. U. NE 4.3 - 5.8 Aluminum mg/kg NE 31253 Antimony mg/kg 0.9 1 Arsenic mg/kg 5.8 12.6 Barium mg/kg 580 139 Beryllium mg/kg 63 1.65 Boron mg/kg 45 22 Cadmium mg/kg 3 0.032 Calcium mg/kg NE 450 Chloride mg/kg NE 14 Chromium mg/kg 360,000 41.1 Cobalt mg/kg 0.9 51 Copper mg/kg 700 28.4 Iron mg/kg 150 40400 Lead mg/kg 270 39.7 Magnesium mg/kg NE 3600 Manganese mg/kg 65 1117 Mercury mg/kg 1 0.1 Molybdenum mg/kg NE 9.8 Nickel mg/kg 130 11.6 Nitrate (as N) mg/kg NE 0.3 Potassium mg/kg NE 2114 Selenium mg/kg 2.1 5.44 Sodium mg/kg NE 393 Strontium mg/kg NE 9 Sulfate mg/kg NE 12 Thallium mg/kg 0.28 0.852 Vanadium mg/kg 6 127 Zinc mg/kg 1200 51.8 Prepared by: JHG Checked by: MCM Notes• The updated values for chromium, thallium, and vanadium are based upon ongoing statistical evaluation since September 1, 2017 (Zimmerman To Draovitch; Appendix A) and have not yet been approved by NCDEQ * - Upper and lower threshold values calculated for parameter BTV - background threshold value mg/kg - milligrams per kilogram NE - Not Established PSRG Protection of Groundwater - NCDEQ IHSB Preliminary Soil Remediation Soil Remediation Goals Table — October 2016 S.U. - Standard Unit P:1Duke Energy CarolinaslStatistics_CAMXBTV Reports for CSAs\Belews CreekORAFTUablesJable 9 - Provisional Background Soil Threshold Values.xlsx Page 1 of 1 Proposed Background Threshold Values For Naturally Occurring Concentrations in Groundwater and Soil October 2017 Belews Creek Steam Station APPENDIX A BOX AND Q -Q - PLOTS SHALLOW SynTerra P:\Duke Energy Carolinas\Statistics—CAMA\BTV Reports for CSAs\Belews Creek\DRAFT\Belews Creek_BTV Report Text_CSA2_FINAL. docx BELEWS CREEK STEAM STATION APPENDIX A NCSS 11.0.4 7/13/2017 12:19:42 PM 1 Normal Probability Plots Dataset ...\Belews_BG Saprolite GW Data—May 2017—for ProUCL_NCSS_No ND column.NCSS Normal Probability Plot Section 6.0 • • 5.5 - CL 5.0 • 4.5 1 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX A NCSS 11.0.4 7/13/2017 12:19:42 PM 2 Normal Probability Plots Dataset ...\Belews_BG Saprolite GW Data—May 2017—for ProUCL_NCSS_No ND column.NCSS 30000- 25000- 20000- 15000- 10000- 000 00002500020000 1500010000••• 5000- 0- 1 000 01 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX A NCSS 11.0.4 7/13/2017 12:19:42 PM 3 Normal Probability Plots Dataset ...\Belews_BG Saprolite GW Data—May 2017—for ProUCL_NCSS_No ND column.NCSS 8000 • 6000 E 4000 Q 2000 • •• • • 0- 1 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX A NCSS 11.0.4 7/13/2017 12:19:42 PM 4 Normal Probability Plots Dataset ...\Belews_BG Saprolite GW Data—May 2017—for ProUCL_NCSS_No ND column.NCSS 1.2 • 0.9 c 0 E 0.6- 0.3- 0.0- 1 .60.3 0.01 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX A NCSS 11.0.4 7/13/2017 12:19:42 PM 5 Normal Probability Plots Dataset ...\Belews_BG Saprolite GW Data—May 2017—for ProUCL_NCSS_No ND column.NCSS 1.0- 0.8- 0.6- 0.4- 0.2- 0.0---1- 1 .80.6 0.40.2 0.01 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX A NCSS 11.0.4 7/13/2017 12:19:42 PM 6 Normal Probability Plots Dataset ...\Belews_BG Saprolite GW Data—May 2017—for ProUCL_NCSS_No ND column.NCSS 150- 100- E 50100 E ca m 50 —Zee • 0 1 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX A NCSS 11.0.4 7/13/2017 12:19:42 PM 7 Normal Probability Plots Dataset ...\Belews_BG Saprolite GW Data—May 2017—for ProUCL_NCSS_No ND column.NCSS 5- 4- E 4E 3 m m 2 --z 0 • ••• 1 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX A NCSS 11.0.4 7/13/2017 12:19:42 PM 8 Normal Probability Plots Dataset ...\Belews_BG Saprolite GW Data—May 2017—for ProUCL_NCSS_No ND column.NCSS 25000- 20000- 15000- 0 500020000 15000 0 c� v 10000 m • • •�f 5000 • • • 0- 1 1 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX A NCSS 11.0.4 7/13/2017 12:19:42 PM 9 Normal Probability Plots Dataset ...\Belews_BG Saprolite GW Data—May 2017—for ProUCL_NCSS_No ND column.NCSS 50- --------�»•• • • • • 40- 30- 0 0 30 c 0 0 m 20- 10- 0- 1 01001 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX A NCSS 11.0.4 7/13/2017 12:19:42 PM 10 Normal Probability Plots Dataset ...\Belews_BG Saprolite GW Data—May 2017—for ProUCL_NCSS_No ND column.NCSS 1.0- 0.8- E 0.6 ca V 0.4 • 0.2- 0.0 1 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX A NCSS 11.0.4 7/13/2017 12:19:42 PM 11 Normal Probability Plots Dataset ...\Belews_BG Saprolite GW Data—May 2017—for ProUCL_NCSS_No ND column.NCSS 10000- 8000- • • i 6000- 4000- 2000- 0- 1 0004000200001 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX A NCSS 11.0.4 7/13/2017 12:19:42 PM 12 Normal Probability Plots Dataset ...\Belews_BG Saprolite GW Data—May 2017—for ProUCL_NCSS_No ND column.NCSS 5001.0- 5000.5- 0 001.05000.50 5000.0 t ca U 4999.5- 4999.0- 1 999.54999.01 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX A NCSS 11.0.4 7/13/2017 12:19:42 PM 13 Normal Probability Plots Dataset ...\Belews_BG Saprolite GW Data—May 2017—for ProUCL_NCSS_No ND column.NCSS 20000- 15000- 0 000015000p 10000- 7 0000 t w 5000- 0- 1 00001 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX A NCSS 11.0.4 7/13/2017 12:19:42 PM 14 Normal Probability Plots Dataset ...\Belews_BG Saprolite GW Data—May 2017—for ProUCL_NCSS_No ND column.NCSS 3.0- 2.5- 2.0- > .02.52.0 > E .E 1.5 o •• t V 1.0- 0.5- 0.0- 1 .00.5 0.01 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX A NCSS 11.0.4 7/13/2017 12:19:42 PM 15 Normal Probability Plots Dataset ...\Belews_BG Saprolite GW Data—May 2017—for ProUCL_NCSS_No ND column.NCSS 510E15- 10- E •E • 0 s U 5 •• • • • • • • • •• 0 1 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX A NCSS 11.0.4 7/13/2017 12:19:42 PM 16 Normal Probability Plots Dataset ...\Belews_BG Saprolite GW Data—May 2017—for ProUCL_NCSS_No ND column.NCSS 1.5 • 1.0 000 0 �a 0 v 0.5 N0 • r do r 0.0 1 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX A NCSS 11.0.4 7/13/2017 12:19:42 PM 17 Normal Probability Plots Dataset ...\Belews_BG Saprolite GW Data—May 2017—for ProUCL_NCSS_No ND column.NCSS 5- 4- 3 - CL 43a CL 0 U 2 • • • 1 vi • • • • •• LT0 1 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX A NCSS 11.0.4 7/13/2017 12:19:42 PM 18 Normal Probability Plots Dataset ...\Belews_BG Saprolite GW Data—May 2017—for ProUCL_NCSS_No ND column.NCSS 15000- 10000- 0 5000 10000 c 0 5000 • •• 0 1 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX A NCSS 11.0.4 7/13/2017 12:19:42 PM 19 Normal Probability Plots Dataset ...\Belews_BG Saprolite GW Data—May 2017—for ProUCL_NCSS_No ND column.NCSS 3.0 2.5 • 2.0 M 1.5 J 1.0- 0.5- 0.0 .0 0.50.0 • • • •• 1 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX A NCSS 11.0.4 7/13/2017 12:19:42 PM 20 Normal Probability Plots Dataset ...\Belews_BG Saprolite GW Data—May 2017—for ProUCL_NCSS_No ND column.NCSS 5000- 4000- E 0004000 E 3000- 2000- 1000- 0 000 200010000 1 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX A NCSS 11.0.4 7/13/2017 12:19:42 PM 21 Normal Probability Plots Dataset ...\Belews_BG Saprolite GW Data—May 2017—for ProUCL_NCSS_No ND column.NCSS 200- 150- 100- 50- 0- 1 001501005001 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX A NCSS 11.0.4 7/13/2017 12:19:42 PM 22 Normal Probability Plots Dataset ...\Belews_BG Saprolite GW Data—May 2017—for ProUCL_NCSS_No ND column.NCSS 0.20- •• • • • 0.15 L 0.10 (D 0.05 • • 0.00- 1 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX A NCSS 11.0.4 7/13/2017 12:19:42 PM 23 Normal Probability Plots Dataset ...\Belews_BG Saprolite GW Data—May 2017—for ProUCL_NCSS_No ND column.NCSS 10- • • • • 8- 6- 4- 0 64• 2 � • • •• • 0 1 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX A NCSS 11.0.4 7/13/2017 12:19:42 PM 24 Normal Probability Plots Dataset ...\Belews_BG Saprolite GW Data—May 2017—for ProUCL_NCSS_No ND column.NCSS 1.0- 0.8- 0.6- ----------- .0 0.80.6 as ••• O 0.4 0.2 • • • •• 0.0- L ------- j 1 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX A NCSS 11.0.4 7/13/2017 12:19:42 PM 25 Normal Probability Plots Dataset ...\Belews_BG Saprolite GW Data—May 2017—for ProUCL_NCSS_No ND column.NCSS 086m10- 8- 6- 7@ Z 4- 2- 0- 1 2 1 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX A NCSS 11.0.4 7/13/2017 12:19:42 PM 26 Normal Probability Plots Dataset ...\Belews_BG Saprolite GW Data—May 2017—for ProUCL_NCSS_No ND column.NCSS 4000- 3000- z 0003000 Z �I 2000- z 000 Z 1000 000 0 0- 1 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX A NCSS 11.0.4 7/13/2017 12:19:42 PM 27 Normal Probability Plots Dataset ...\Belews_BG Saprolite GW Data—May 2017—for ProUCL_NCSS_No ND column.NCSS 5000 .••000 • • 4000- E 3000 C • a 2000 1000 0 • 1 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX A NCSS 11.0.4 7/13/2017 12:19:42 PM 28 Normal Probability Plots Dataset ...\Belews_BG Saprolite GW Data—May 2017—for ProUCL_NCSS_No ND column.NCSS 1.5- 1.0- E .51.0 E (D m Cn 0.5- 0.0-1 .5 0.0 1 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX A NCSS 11.0.4 7/13/2017 12:19:42 PM 29 Normal Probability Plots Dataset ...\Belews_BG Saprolite GW Data—May 2017—for ProUCL_NCSS_No ND column.NCSS 8000- 6000- E 0006000 • ia 4000- 0 000 o + N 2000- 0- 1 00001 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX A NCSS 11.0.4 7/13/2017 12:19:42 PM 30 Normal Probability Plots Dataset ...\Belews_BG Saprolite GW Data—May 2017—for ProUCL_NCSS_No ND column.NCSS 60- 50- 40- E 05040 E • E- 30- 0 0) 20 N 10 • • • ••••• • 0- 1 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX A NCSS 11.0.4 7/13/2017 12:19:42 PM 31 Normal Probability Plots Dataset ...\Belews_BG Saprolite GW Data—May 2017—for ProUCL_NCSS_No ND column.NCSS 3000- 2500- 2000- LE 00025002000 LE 1500- 1000- 500- 0- 1 5001000 50001 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX A NCSS 11.0.4 7/13/2017 12:19:42 PM 32 Normal Probability Plots Dataset ...\Belews_BG Saprolite GW Data—May 2017—for ProUCL_NCSS_No ND column.NCSS 100- 80- 60- U) 00 8060 as 40- 20- 0 0200 1 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX A NCSS 11.0.4 7/13/2017 12:19:42 PM 33 Normal Probability Plots Dataset ...\Belews_BG Saprolite GW Data—May 2017—for ProUCL_NCSS_No ND column.NCSS 100000- 80000- 60000- 40000- 20000- 0- 1 000008000060000400002000001 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX A NCSS 11.0.4 7/13/2017 12:19:42 PM 34 Normal Probability Plots Dataset ...\Belews_BG Saprolite GW Data—May 2017—for ProUCL_NCSS_No ND column.NCSS 0.20- • • • • 0.15- E 0.10 s I— • 0.05 • i 0.00 1 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX A NCSS 11.0.4 7/13/2017 12:19:42 PM 35 Normal Probability Plots Dataset ...\Belews_BG Saprolite GW Data—May 2017—for ProUCL_NCSS_No ND column.NCSS 10000- 8000- 6000- u 00008000 6000 • • O 4000- 2000- 0 0002000 • • 0 1 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX A NCSS 11.0.4 7/13/2017 12:19:42 PM 36 Normal Probability Plots Dataset ...\Belews_BG Saprolite GW Data—May 2017—for ProUCL_NCSS_No ND column.NCSS 8- 6- E 6E M 4 c 2 1 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX A NCSS 11.0.4 7/13/2017 12:19:42 PM 37 Normal Probability Plots Dataset ...\Belews_BG Saprolite GW Data—May 2017—for ProUCL_NCSS_No ND column.NCSS 40- 30- 0 030• __ 20 N •• 10 •• 0- 1 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX A NCSS 11.0.4 7/13/2017 12:19:42 PM 38 Normal Probability Plots Dataset ...\Belews_BG Saprolite GW Data—May 2017—for ProUCL_NCSS_No ND column.NCSS 10 • • 8- 6- 4- 2- 00000000 6420000•• 0 • 0 • 0 -2 1 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX A NCSS 11.0.4 7/13/2017 12:19:42 PM 39 Normal Probability Plots Dataset ...\Belews_BG Saprolite GW Data—May 2017—for ProUCL_NCSS_No ND column.NCSS 0.5 •0000••••• • • • • • 0.4- E 0.3 i 0.2 0.1 0.0- 1 5 10 25 50 75 90 95 99 Percent of Data Proposed Background Threshold Values For Naturally Occurring Concentrations in Groundwater and Soil October 2017 Belews Creek Steam Station APPENDIX B BOX AND Q -Q PLOTS - DEEP SynTerra P:\Duke Energy Carolinas\Statistics—CAMA\BTV Reports for CSAs\Belews Creek\DRAFT\Belews Creek_BTV Report Text_CSA2_FINAL. docx BELEWS CREEK STEAM STATION APPENDIX B NCSS 11.0.4 7/13/2017 2:05:23 PM 1 Normal Probability Plots Dataset ...\BeleWS_BG TZ GW Data_May 2017—for ProUCL_NCSS.NCSS Normal Probability Plot Section 7.0 6.5 • Q 6.0 • 5.5 • 5.0 1 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX B NCSS 11.0.4 7/13/2017 2:05:23 PM 2 Normal Probability Plots Dataset ...\BeleWS_BG TZ GW Data_May 2017—for ProUCL_NCSS.NCSS 60000- 50000- 40000- < 000050000 40000Q 30000- 20000- 10000- 1 000020000100001 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX B NCSS 11.0.4 7/13/2017 2:05:23 PM 3 Normal Probability Plots Dataset ...\BeleWS_BG TZ GW Data_May 2017—for ProUCL_NCSS.NCSS 3000- 2500- 2000- 1500- 1000- 500- 0- 1 000250020001500100050001 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX B NCSS 11.0.4 7/13/2017 2:05:23 PM 4 Normal Probability Plots Dataset ...\BeleWS_BG TZ GW Data_May 2017—for ProUCL_NCSS.NCSS 1.5- 1.0- 0 .5 0 E c a 0.5 • 0.0 1 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX B NCSS 11.0.4 7/13/2017 2:05:23 PM 5 Normal Probability Plots Dataset ...\BeleWS_BG TZ GW Data_May 2017—for ProUCL_NCSS.NCSS 1.0- 0.8- 0.6- 0.4- 0.2- Y .0 0.80.60.40.2 • 0.0- 1 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX B NCSS 11.0.4 7/13/2017 2:05:23 PM 6 Normal Probability Plots Dataset ...\BeleWS_BG TZ GW Data_May 2017—for ProUCL_NCSS.NCSS 60- 50- 40- E 050 40E • 30 c� 00 20 10 •• • 0 1 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX B NCSS 11.0.4 7/13/2017 2:05:23 PM 7 Normal Probability Plots Dataset ...\BeleWS_BG TZ GW Data_May 2017—for ProUCL_NCSS.NCSS 1.0- 0.8- E .0 0.8E 0.6 m m 0.4 • • 0.2 •• 0.0 • • • • • 1 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX B NCSS 11.0.4 7/13/2017 2:05:23 PM 8 Normal Probability Plots Dataset ...\BeleWS_BG TZ GW Data_May 2017—for ProUCL_NCSS.NCSS 60000- 50000- • •• N~ • 40000 a� c� c 30000- 20000- 10000- 0- 1 0000200001000001 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX B NCSS 11.0.4 7/13/2017 2:05:23 PM 9 Normal Probability Plots Dataset ...\BeleWS_BG TZ GW Data_May 2017—for ProUCL_NCSS.NCSS 50- 45- 40- 0 0 ••«MN•• • • • • 45 • • 40 c 0 35- 0 m 30- 25- 20- 1 0 25201 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX B NCSS 11.0.4 7/13/2017 2:05:23 PM 10 Normal Probability Plots Dataset ...\BeleWS_BG TZ GW Data_May 2017—for ProUCL_NCSS.NCSS 1.0- 0.8- E .0 0.8E 0.6 ca V 0.4- 0.2- 0.0 .40.2 0.0 • • _ 1 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX B NCSS 11.0.4 7/13/2017 2:05:23 PM 11 Normal Probability Plots Dataset ...\BeleWS_BG TZ GW Data_May 2017—for ProUCL_NCSS.NCSS 15000- 000 • i • 10000- E .v U 5000- 0- 1 00001 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX B NCSS 11.0.4 7/13/2017 2:05:23 PM 12 Normal Probability Plots Dataset ...\BeleWS_BG TZ GW Data_May 2017—for ProUCL_NCSS.NCSS 5001.0- 5000.5- 0 001.05000.50 5000.0 t ca U 4999.5- 4999.0- 1 999.54999.01 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX B NCSS 11.0.4 7/13/2017 2:05:23 PM 13 Normal Probability Plots Dataset ...\BeleWS_BG TZ GW Data_May 2017—for ProUCL_NCSS.NCSS 30000- 25000- 20000- 0 00002500020000 0 15000- 10000- 5000- 0- 1 5000 10000 500001 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX B NCSS 11.0.4 7/13/2017 2:05:23 PM 14 Normal Probability Plots Dataset ...\BeleWS_BG TZ GW Data_May 2017—for ProUCL_NCSS.NCSS 0.60- 0.45- > .600.45> • E . 0.30 • E • 0 t • V •� • 0.15- 0.00- 1 .15 0.001 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX B NCSS 11.0.4 7/13/2017 2:05:23 PM 15 Normal Probability Plots Dataset ...\BeleWS_BG TZ GW Data_May 2017—for ProUCL_NCSS.NCSS 5- 4- E 3- 0 • L • � U 2 N N 1 i 0 • 1 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX B NCSS 11.0.4 7/13/2017 2:05:23 PM 16 Normal Probability Plots Dataset ...\BeleWS_BG TZ GW Data_May 2017—for ProUCL_NCSS.NCSS 2.0 • • • • 1.5 • �a 0 1.0 • V 0.5 «•• • 0.0 • • •• 1 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX B NCSS 11.0.4 7/13/2017 2:05:23 PM 17 Normal Probability Plots Dataset ...\BeleWS_BG TZ GW Data_May 2017—for ProUCL_NCSS.NCSS 086CL10- 8- 6- CL CL «�•• • • 0 U 4- 2- 0- 20 • • • •• 1 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX B NCSS 11.0.4 7/13/2017 2:05:23 PM 18 Normal Probability Plots Dataset ...\BeleWS_BG TZ GW Data_May 2017—for ProUCL_NCSS.NCSS 2000- 1500- o 0001500o 1000 500 • 1 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX B NCSS 11.0.4 7/13/2017 2:05:23 PM 19 Normal Probability Plots Dataset ...\BeleWS_BG TZ GW Data_May 2017—for ProUCL_NCSS.NCSS 1.5- 1.0- .5 1.0 •M•••• • • (D J 0.5 • • • • •• 0- 0.0---1- 1 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX B NCSS 11.0.4 7/13/2017 2:05:23 PM 20 Normal Probability Plots Dataset ...\BeleWS_BG TZ GW Data_May 2017—for ProUCL_NCSS.NCSS 8000 •' e 6000- 4000- 2000- 0 000 400020000 1 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX B NCSS 11.0.4 7/13/2017 2:05:23 PM 21 Normal Probability Plots Dataset ...\BeleWS_BG TZ GW Data_May 2017—for ProUCL_NCSS.NCSS 100 80 N 60 c� = i i 40 20- 0- 1 0 1 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX B NCSS 11.0.4 7/13/2017 2:05:23 PM 22 Normal Probability Plots Dataset ...\BeleWS_BG TZ GW Data_May 2017—for ProUCL_NCSS.NCSS 0.20- •• • • • 0.15 L C(D G 0.10- 0.05 1 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX B NCSS 11.0.4 7/13/2017 2:05:23 PM 23 Normal Probability Plots Dataset ...\BeleWS_BG TZ GW Data_May 2017—for ProUCL_NCSS.NCSS 30- 25- 20- 15- 10- 025201510 ••• • • 5- 0- 1 01 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX B NCSS 11.0.4 7/13/2017 2:05:23 PM 24 Normal Probability Plots Dataset ...\BeleWS_BG TZ GW Data_May 2017—for ProUCL_NCSS.NCSS 1.5- 1.0- E .51.0 E • a� o • 0.5 r • 0.0 1 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX B NCSS 11.0.4 7/13/2017 2:05:23 PM 25 Normal Probability Plots Dataset ...\BeleWS_BG TZ GW Data_May 2017—for ProUCL_NCSS.NCSS 6- 5- 4- 3- 2- 0 54 320 1 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX B NCSS 11.0.4 7/13/2017 2:05:23 PM 26 Normal Probability Plots Dataset ...\BeleWS_BG TZ GW Data_May 2017—for ProUCL_NCSS.NCSS 3000- 2500- 2000- z 00025002000 Z �I 1500 c�a Z 1000- 500- 0- 1 00050001 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX B NCSS 11.0.4 7/13/2017 2:05:23 PM 27 Normal Probability Plots Dataset ...\BeleWS_BG TZ GW Data_May 2017—for ProUCL_NCSS.NCSS 30000- 25000- 20000- E 00002500020000E • • N 15000- 0 a 10000- 5000- 0- 1 00005000 1 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX B NCSS 11.0.4 7/13/2017 2:05:23 PM 28 Normal Probability Plots Dataset ...\BeleWS_BG TZ GW Data_May 2017—for ProUCL_NCSS.NCSS 1.0- 0.8- E (D 0.6 m Cn •• t 0.4 17 0.2 • 1 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX B NCSS 11.0.4 7/13/2017 2:05:23 PM 29 Normal Probability Plots Dataset ...\BeleWS_BG TZ GW Data_May 2017—for ProUCL_NCSS.NCSS 16000- 14000- 12000- E 60001400012000 • • 0 U) 10000- 8000- 6000- 1 0000800060001 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX B NCSS 11.0.4 7/13/2017 2:05:23 PM 30 Normal Probability Plots Dataset ...\BeleWS_BG TZ GW Data_May 2017—for ProUCL_NCSS.NCSS 80- 70- 60- E 070 60 E c 50- 0 0 0 L Cn 40 • 30 • 20- 1 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX B NCSS 11.0.4 7/13/2017 2:05:23 PM 31 Normal Probability Plots Dataset ...\BeleWS_BG TZ GW Data_May 2017—for ProUCL_NCSS.NCSS 15000 • • 10000-• • m C0 • • 5000 •• • 0 0 0 0 0 'rolo I 1 9 1 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX B NCSS 11.0.4 7/13/2017 2:05:23 PM 32 Normal Probability Plots Dataset ...\BeleWS_BG TZ GW Data_May 2017—for ProUCL_NCSS.NCSS 100- •• • • • • 80- 60- 40-/ 06040 20- 0 1 , 0 0, L 1 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX B NCSS 11.0.4 7/13/2017 2:05:23 PM 33 Normal Probability Plots Dataset ...\BeleWS_BG TZ GW Data_May 2017—for ProUCL_NCSS.NCSS 200000 • 150000 • p 100000- 50000- 0- 1 00000 50000 01 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX B NCSS 11.0.4 7/13/2017 2:05:23 PM 34 Normal Probability Plots Dataset ...\BeleWS_BG TZ GW Data_May 2017 -for ProUCL_NCSS.NCSS 0.20- 0.15- E .20 0.15E 0.10- F- 0.05- 0.00- 1 .101- 0.05 0.001 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX B NCSS 11.0.4 7/13/2017 2:05:23 PM 35 Normal Probability Plots Dataset ...\BeleWS_BG TZ GW Data_May 2017—for ProUCL_NCSS.NCSS 15000- 10000 - U O • • 5000- 0 1 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX B NCSS 11.0.4 7/13/2017 2:05:23 PM 36 Normal Probability Plots Dataset ...\BeleWS_BG TZ GW Data_May 2017—for ProUCL_NCSS.NCSS 1.5 • • 1.0 E 1 ca c > • • 0.5- 0.0- 1 .5 0.01 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX B NCSS 11.0.4 7/13/2017 2:05:23 PM 37 Normal Probability Plots Dataset ...\BeleWS_BG TZ GW Data_May 2017—for ProUCL_NCSS.NCSS 80 60 • • __ 40 N • 20- 0- 1 0 01 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX B NCSS 11.0.4 7/13/2017 2:05:23 PM 38 Normal Probability Plots Dataset ...\BeleWS_BG TZ GW Data_May 2017—for ProUCL_NCSS.NCSS 8 6 � 4 c� 2- 0- • • • •• —2 1 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX B NCSS 11.0.4 7/13/2017 2:05:23 PM 39 Normal Probability Plots Dataset ...\BeleWS_BG TZ GW Data_May 2017—for ProUCL_NCSS.NCSS 0.5- 0.4- E .5 0.4E 0.3- .F 0.2- 0.1 • • 0.0- 1 5 10 25 50 75 90 95 99 Percent of Data Proposed Background Threshold Values For Naturally Occurring Concentrations in Groundwater and Soil October 2017 Belews Creek Steam Station APPENDIX C BOX AND Q -Q PLOTS - BEDROCK SynTerra P:\Duke Energy Carolinas\Statistics—CAMA\BTV Reports for CSAs\Belews Creek\DRAFT\Belews Creek_BTV Report Text_CSA2_FINAL. docx BELEWS CREEK STEAM STATION APPENDIX C NCSS 11.0.4 7/13/2017 3:57:03 PM 1 Normal Probability Plots Dataset ...\BeleWS_BG BR GW Data_May 2017—for ProUCL_NCSS.NCSS Normal Probability Plot Section 8.0 7.5 • Q 7.0 • 6.5- 6.0 .5 6.0 1 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX C NCSS 11.0.4 7/13/2017 3:57:03 PM 2 Normal Probability Plots Dataset ...\BeleWS_BG BR GW Data_May 2017—for ProUCL_NCSS.NCSS 90000- 80000- 70000- 60000- 50000- 0 000080000 700006000050000• • 40000 • • • • • 30000- 1 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX C NCSS 11.0.4 7/13/2017 3:57:03 PM 3 Normal Probability Plots Dataset ...\BeleWS_BG BR GW Data_May 2017—for ProUCL_NCSS.NCSS 200- 150- E 00150E c .E Q 100 • • • • • • 50 • 1 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX C NCSS 11.0.4 7/13/2017 3:57:03 PM 4 Normal Probability Plots Dataset ...\BeleWS_BG BR GW Data_May 2017—for ProUCL_NCSS.NCSS 0.5 • • • • 0.4- 0 .4 O E 0.3- 0.2- 0.1 .30.2 0.1 1 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX C NCSS 11.0.4 7/13/2017 3:57:03 PM 5 Normal Probability Plots Dataset ...\BeleWS_BG BR GW Data_May 2017—for ProUCL_NCSS.NCSS 0.7- 0.6- 0.5- 0.4- 0.3- 0.2- .70.60.5 0.4 0.30.2 • • 0.1 ---1- 1 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX C NCSS 11.0.4 7/13/2017 3:57:03 PM 6 Normal Probability Plots Dataset ...\BeleWS_BG BR GW Data_May 2017—for ProUCL_NCSS.NCSS 2108E12- 10- 8- E to 00 6- 4- T 4 • • • 2- 1 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX C NCSS 11.0.4 7/13/2017 3:57:03 PM 7 Normal Probability Plots Dataset ...\BeleWS_BG BR GW Data_May 2017—for ProUCL_NCSS.NCSS 0.20- 0.15- 0.10- 0.05- 0.00- 1 .20 0.150.10 0.050.001 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX C NCSS 11.0.4 7/13/2017 3:57:03 PM 8 Normal Probability Plots Dataset ...\BeleWS_BG BR GW Data_May 2017—for ProUCL_NCSS.NCSS 80000 • 60000 • m c� 40000- 20000- 0 0000200000 1 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX C NCSS 11.0.4 7/13/2017 3:57:03 PM 9 Normal Probability Plots Dataset ...\BeleWS_BG BR GW Data_May 2017—for ProUCL_NCSS.NCSS 50 • • • • • • • • • 5O045- 0- 0 m 40- 35-1 1 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX C NCSS 11.0.4 7/13/2017 3:57:03 PM 10 Normal Probability Plots Dataset ...\BeleWS_BG BR GW Data_May 2017—for ProUCL_NCSS.NCSS 0.08 • • • • • • • • • 0.07- E 0.06- L) 0.05- 0.04- 0.03- 1 .050.040.031 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX C NCSS 11.0.4 7/13/2017 3:57:03 PM 11 Normal Probability Plots Dataset ...\BeleWS_BG BR GW Data_May 2017—for ProUCL_NCSS.NCSS 30000- 25000- 20000- 15000- 10000- 5000- 0 000025000 200001500010000 5000 0 1 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX C NCSS 11.0.4 7/13/2017 3:57:03 PM 12 Normal Probability Plots Dataset ...\BeleWS_BG BR GW Data_May 2017—for ProUCL_NCSS.NCSS 5001.0- 5000.5- 0 001.05000.50 5000.0- 4999.5- 4999.0- 1 000.04999.54999.01 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX C NCSS 11.0.4 7/13/2017 3:57:03 PM 13 Normal Probability Plots Dataset ...\BeleWS_BG BR GW Data_May 2017—for ProUCL_NCSS.NCSS 3000- 2500- 2000- (D 000 2500 2000(D .p 1500 - FE U 1000- 500- 0- 1 00050001 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX C NCSS 11.0.4 7/13/2017 3:57:03 PM 14 Normal Probability Plots Dataset ...\BeleWS_BG BR GW Data_May 2017—for ProUCL_NCSS.NCSS 0.4- 0.3- > .40.3> E • . 0.2 E • O • t V • 0.1 • • 0.0 1 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX C NCSS 11.0.4 7/13/2017 3:57:03 PM 15 Normal Probability Plots Dataset ...\BeleWS_BG BR GW Data_May 2017—for ProUCL_NCSS.NCSS 60- 50- 40- E 05040 E 30- 0 s U 20- 10- 0 010• •• 0 • • • • . I Li 1 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX C NCSS 11.0.4 7/13/2017 3:57:03 PM 16 Normal Probability Plots Dataset ...\BeleWS_BG BR GW Data_May 2017—for ProUCL_NCSS.NCSS 0.8 • 0.6 • �a 0 0.4 V • 0.2 • 0.0---1- 1 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX C NCSS 11.0.4 7/13/2017 3:57:03 PM 17 Normal Probability Plots Dataset ...\BeleWS_BG BR GW Data_May 2017—for ProUCL_NCSS.NCSS 086CL10- 8- 6- CL CL 0 U 4 • 2 • • • • • 0 • 1 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX C NCSS 11.0.4 7/13/2017 3:57:03 PM 18 Normal Probability Plots Dataset ...\BeleWS_BG BR GW Data_May 2017—for ProUCL_NCSS.NCSS 500- 400- 300- 0 004003000 L 200- 100- 0 001000 1 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX C NCSS 11.0.4 7/13/2017 3:57:03 PM 19 Normal Probability Plots Dataset ...\BeleWS_BG BR GW Data_May 2017—for ProUCL_NCSS.NCSS 0.12 • 0.10 • • • • • • • 0.08- 0.06- 0.0 .080.060.04 1 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX C NCSS 11.0.4 7/13/2017 3:57:03 PM 20 Normal Probability Plots Dataset ...\BeleWS_BG BR GW Data_May 2017—for ProUCL_NCSS.NCSS 4000- 3000- 2000- 1000- 0 0003000 2000 10000 1 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX C NCSS 11.0.4 7/13/2017 3:57:03 PM 21 Normal Probability Plots Dataset ...\BeleWS_BG BR GW Data_May 2017—for ProUCL_NCSS.NCSS 100- 80- 60- 40- 20- 0 0080604020 0 1 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX C NCSS 11.0.4 7/13/2017 3:57:03 PM 22 Normal Probability Plots Dataset ...\BeleWS_BG BR GW Data_May 2017—for ProUCL_NCSS.NCSS 1.0 0.8 � 0.6 as 0.4 0.2 0.0 1 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX C NCSS 11.0.4 7/13/2017 3:57:03 PM 23 Normal Probability Plots Dataset ...\BeleWS_BG BR GW Data_May 2017—for ProUCL_NCSS.NCSS 10 • • • • • • 8- 6- 4- 2- 0- 642 0 1 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX C NCSS 11.0.4 7/13/2017 3:57:03 PM 24 Normal Probability Plots Dataset ...\BeleWS_BG BR GW Data_May 2017—for ProUCL_NCSS.NCSS 4- 3- E 3E c -0 2 • 0 • • 1 • 0 1 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX C NCSS 11.0.4 7/13/2017 3:57:03 PM 25 Normal Probability Plots Dataset ...\BeleWS_BG BR GW Data_May 2017—for ProUCL_NCSS.NCSS 40- 30- 7@ 030 m 20- 10- 0- 1 0 10 01 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX C NCSS 11.0.4 7/13/2017 3:57:03 PM 26 Normal Probability Plots Dataset ...\BeleWS_BG BR GW Data_May 2017—for ProUCL_NCSS.NCSS 200- 150- z 00150 Z �I 100- z 50 • 0 1 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX C NCSS 11.0.4 7/13/2017 3:57:03 PM 27 Normal Probability Plots Dataset ...\BeleWS_BG BR GW Data_May 2017—for ProUCL_NCSS.NCSS 6000- 5000- E 0005000 E 4000 ca O a 3000- 2000- 1 00020001 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX C NCSS 11.0.4 7/13/2017 3:57:03 PM 28 Normal Probability Plots Dataset ...\BeleWS_BG BR GW Data_May 2017—for ProUCL_NCSS.NCSS 0.50 • • • • • • • • • 0.49 0.48 E r- 0.47 m N 0.46- 0.45- 0.44- .460.450.44 1 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX C NCSS 11.0.4 7/13/2017 3:57:03 PM 29 Normal Probability Plots Dataset ...\BeleWS_BG BR GW Data_May 2017—for ProUCL_NCSS.NCSS 12000 • • 10000- 8000- 0 0000 80000 Cl) 6000- 4000- 2000- 1 000400020001 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX C NCSS 11.0.4 7/13/2017 3:57:03 PM 30 Normal Probability Plots Dataset ...\BeleWS_BG BR GW Data_May 2017—for ProUCL_NCSS.NCSS 100 • 80 • 60- 0 0 0 cn • 40- 20- 1 0 201 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX C NCSS 11.0.4 7/13/2017 3:57:03 PM 31 Normal Probability Plots Dataset ...\BeleWS_BG BR GW Data_May 2017—for ProUCL_NCSS.NCSS 10000- 8000- 6000- 4000- 2000- 0---,-- 1 0000800060004000200001 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX C NCSS 11.0.4 7/13/2017 3:57:03 PM 32 Normal Probability Plots Dataset ...\BeleWS_BG BR GW Data_May 2017—for ProUCL_NCSS.NCSS 100 • • • • • • • • • 80 60 m 40- 20- 0 0200 1 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX C NCSS 11.0.4 7/13/2017 3:57:03 PM 33 Normal Probability Plots Dataset ...\BeleWS_BG BR GW Data_May 2017—for ProUCL_NCSS.NCSS 150000 100000 • • • N D • • 50000- 0. 0000 0 1 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX C NCSS 11.0.4 7/13/2017 3:57:03 PM 34 Normal Probability Plots Dataset ...\BeleWS_BG BR GW Data_May 2017—for ProUCL_NCSS.NCSS 1.0 0.8 E 0.6 �a t 0.4 0.2 0.0 1 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX C NCSS 11.0.4 7/13/2017 3:57:03 PM 35 Normal Probability Plots Dataset ...\BeleWS_BG BR GW Data_May 2017 -for ProUCL_NCSS.NCSS 12000- 10000- 8000- 0 200010000 8000p 6000- F- 4000- 2000- 0 0001- 400020000 1 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX C NCSS 11.0.4 7/13/2017 3:57:03 PM 36 Normal Probability Plots Dataset ...\BeleWS_BG BR GW Data_May 2017—for ProUCL_NCSS.NCSS 2.5- 2.0- E .52.0E 1.5 c� c > 1.0- 0.5- 0.0 .00.5 0.0 1 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX C NCSS 11.0.4 7/13/2017 3:57:03 PM 37 Normal Probability Plots Dataset ...\BeleWS_BG BR GW Data_May 2017—for ProUCL_NCSS.NCSS 60 50 • • 40 • __ 30 N • 20 • • 10 • • • • 0- 1 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX C NCSS 11.0.4 7/13/2017 3:57:03 PM 38 Normal Probability Plots Dataset ...\BeleWS_BG BR GW Data_May 2017—for ProUCL_NCSS.NCSS 8- 6- E 6E 4- 2- 0 20 1 5 10 25 50 75 90 95 99 Percent of Data BELEWS CREEK STEAM STATION APPENDIX C NCSS 11.0.4 7/13/2017 3:57:03 PM 39 Normal Probability Plots Dataset ...\BeleWS_BG BR GW Data_May 2017—for ProUCL_NCSS.NCSS 2.0- 1.5- 1.0- 0.5- 0.0 .0 1.51.00.5 0.0 1 5 10 25 50 75 90 95 99 Percent of Data Proposed Background Threshold Values For Naturally Occurring Concentrations in Groundwater and Soil October 2017 Belews Creek Steam Station APPENDIX D BOX AND Q -Q PLOTS - SOIL SynTerra P:\Duke Energy Carolinas\Statistics—CAMA\BTV Reports for CSAs\Belews Creek\DRAFT\Belews Creek_BTV Report Text_CSA2_FINAL. docx BELEWS CREEK STEAM STATION NCSS 11.0.4 Dataset P:\...\With Outliers\Belews Creek All BG Soil Data.NCSS Normal Probability Plot Section 7.0- 6.5- 6.0- 5.5 .0 6.56.05.5 •• N 5.0- 4.5- 4.0- 1 .04.5 4.01 10 25 50 75 90 95 9899 Percent of Data APPENDIX D 10/4/2017 10:05:35 AM 1 BELEWS CREEK STEAM STATION NCSS 11.0.4 Dataset P:\...\With Outliers\Belews Creek All BG Soil Data.NCSS 40000 • 30000 • E • 20000- 10000- 0- 1 00001000001 10 25 50 75 90 95 9899 Percent of Data APPENDIX D 10/4/2017 10:05:35 AM 2 BELEWS CREEK STEAM STATION NCSS 11.0.4 Dataset P:\...\With Outliers\Belews Creek All BG Soil Data.NCSS 0.60 • • 0.45 • ••• c E 0.30 • • • a 0.15- 0.00- 1 .15 0.001 10 25 50 75 90 95 9899 Percent of Data APPENDIX D 10/4/2017 10:05:35 AM 3 BELEWS CREEK STEAM STATION NCSS 11.0.4 Dataset P:\...\With Outliers\Belews Creek All BG Soil Data.NCSS APPENDIX D 10/4/2017 10:05:35 AM 4 60 • • 50 40 v • • .(D 30 • • Q 20 • • 10 •• 0 • ••••L6 I 1 10 25 50 75 90 95 9899 Percent of Data BELEWS CREEK STEAM STATION NCSS 11.0.4 Dataset P:\...\With Outliers\Belews Creek All BG Soil Data.NCSS 150 • 100 • 00 50 w 0- 1 10 25 50 75 90 95 9899 Percent of Data APPENDIX D 10/4/2017 10:05:35 AM 5 BELEWS CREEK STEAM STATION NCSS 11.0.4 Dataset P:\...\With Outliers\Belews Creek All BG Soil Data.NCSS 40- 30- 0 0 • • 30 c O 20 • 0 •� • 10 • • 0 1 10 25 50 75 90 95 9899 Percent of Data APPENDIX D 10/4/2017 10:05:35 AM 6 BELEWS CREEK STEAM STATION NCSS 11.0.4 Dataset P:\...\With Outliers\Belews Creek All BG Soil Data.NCSS APPENDIX D 10/4/2017 10:05:35 AM 7 50- 40- 30- 20- T 0403020 • • - 0 i 10 �•• 0I I I I I 1 10 25 50 75 90 95 9899 Percent of Data BELEWS CREEK STEAM STATION NCSS 11.0.4 Dataset P:\...\With Outliers\Belews Creek All BG Soil Data.NCSS 1.0 • 0.8 • i E 0.6- E � N V 0.4 0.2 1 10 25 50 75 90 95 9899 Percent of Data APPENDIX D 10/4/2017 10:05:35 AM 8 BELEWS CREEK STEAM STATION NCSS 11.0.4 Dataset P:\...\With Outliers\Belews Creek All BG Soil Data.NCSS 1500- 1000- E 5001000 E �a U 500 • •' 0- 0 • • 1 10 25 50 75 90 95 9899 Percent of Data APPENDIX D 10/4/2017 10:05:35 AM 9 BELEWS CREEK STEAM STATION NCSS 11.0.4 Dataset P:\...\With Outliers\Belews Creek All BG Soil Data.NCSS 5100 15- 10- 0 v 5 • • • 0 1 10 25 50 75 90 95 9899 Percent of Data APPENDIX D 10/4/2017 10:05:35 AM 10 BELEWS CREEK STEAM STATION NCSS 11.0.4 Dataset P:\...\With Outliers\Belews Creek All BG Soil Data.NCSS 50- 40- E 040E 30 0 V 20- 10- r �f 0 • • • ••• 1 10 25 50 75 90 95 9899 Percent of Data APPENDIX D 10/4/2017 10:05:35 AM 11 BELEWS CREEK STEAM STATION NCSS 11.0.4 Dataset P:\...\With Outliers\Belews Creek All BG Soil Data.NCSS APPENDIX D 10/4/2017 10:05:35 AM 12 40 • • • 30- m 0 • • m 20- 0 U 10 • 0 1 10 25 50 75 90 95 9899 Percent of Data BELEWS CREEK STEAM STATION NCSS 11.0.4 Dataset P:\...\With Outliers\Belews Creek All BG Soil Data.NCSS 30- 25- 20- CL 02520 Q 15- 0 5 0 U •• i 10 5 • • • 0 1 10 25 50 75 90 95 9899 Percent of Data APPENDIX D 10/4/2017 10:05:35 AM 13 BELEWS CREEK STEAM STATION NCSS 11.0.4 Dataset P:\...\With Outliers\Belews Creek All BG Soil Data.NCSS 60000- 50000- 40000- o 000050000 40000 o 30000- 20000- 10000- 0- 1 0000 20000 100000 1 10 25 50 75 90 95 9899 Percent of Data APPENDIX D 10/4/2017 10:05:35 AM 14 BELEWS CREEK STEAM STATION NCSS 11.0.4 Dataset P:\...\With Outliers\Belews Creek All BG Soil Data.NCSS 80- 60- 40- 00 06040•• 20 ••• 0- 1 10 25 50 75 90 95 9899 Percent of Data APPENDIX D 10/4/2017 10:05:35 AM 15 BELEWS CREEK STEAM STATION NCSS 11.0.4 Dataset P:\...\With Outliers\Belews Creek All BG Soil Data.NCSS 6000- 5000- 4000- E 0005000 4000E 3000- 2000- 1000- 0- 1 000 2000 100001 10 25 50 75 90 95 9899 Percent of Data APPENDIX D 10/4/2017 10:05:35 AM 16 BELEWS CREEK STEAM STATION NCSS 11.0.4 Dataset P:\...\With Outliers\Belews Creek All BG Soil Data.NCSS 1200- 1000- 800- 600- 400- 200- 0- 1 2001000 80060040020001 10 25 50 75 90 95 9899 Percent of Data APPENDIX D 10/4/2017 10:05:35 AM 17 BELEWS CREEK STEAM STATION NCSS 11.0.4 Dataset P:\...\With Outliers\Belews Creek All BG Soil Data.NCSS 0.1500 0.1125 • Lu 0.0750- 0.0375- 0.0000- 1 .07500.03750.00001 10 25 50 75 90 95 9899 Percent of Data APPENDIX D 10/4/2017 10:05:35 AM 18 BELEWS CREEK STEAM STATION NCSS 11.0.4 Dataset P:\...\With Outliers\Belews Creek All BG Soil Data.NCSS 030E40- 30- E c 20- 75 10 N• • +N 0 • • • ••• 1 10 25 50 75 90 95 9899 Percent of Data APPENDIX D 10/4/2017 10:05:35 AM 19 BELEWS CREEK STEAM STATION NCSS 11.0.4 Dataset P:\...\With Outliers\Belews Creek All BG Soil Data.NCSS 40 30 aj 20- 10- 0- 1 010 1 10 25 50 75 90 95 9899 Percent of Data APPENDIX D 10/4/2017 10:05:35 AM 20 BELEWS CREEK STEAM STATION NCSS 11.0.4 Dataset P:\...\With Outliers\Belews Creek All BG Soil Data.NCSS 3.0- 2.5- 2.0- (D .02.5 2.0 4-0 'T 1.5- z 1.0 0.5 0000 0.0 • • • • • 0000000 1 10 25 50 75 90 95 9899 Percent of Data APPENDIX D 10/4/2017 10:05:35 AM 21 BELEWS CREEK STEAM STATION NCSS 11.0.4 Dataset P:\...\With Outliers\Belews Creek All BG Soil Data.NCSS APPENDIX D 10/4/2017 10:05:35 AM 22 5000 • • 4000 • E 3000- 0 2000 1000- 0 1 10 25 50 75 90 95 9899 Percent of Data BELEWS CREEK STEAM STATION NCSS 11.0.4 Dataset P:\...\With Outliers\Belews Creek All BG Soil Data.NCSS 8- 6- E • � 4- Q m Cn • • 2 N • • • • • ' 0 1 1 1 10 25 50 75 90 95 9899 Percent of Data APPENDIX D 10/4/2017 10:05:35 AM 23 BELEWS CREEK STEAM STATION NCSS 11.0.4 Dataset P:\...\With Outliers\Belews Creek All BG Soil Data.NCSS APPENDIX D 10/4/2017 10:05:35 AM 24 1500- 1000- E 5001000 E • • m T3 0 cn • 500 • •• • 0 • • • 1 10 25 50 75 90 95 9899 Percent of Data BELEWS CREEK STEAM STATION NCSS 11.0.4 Dataset P:\...\With Outliers\Belews Creek All BG Soil Data.NCSS 20- 15- E 10- 04-0 •, • Cn • 5- 0 0 • 1 10 25 50 75 90 95 9899 Percent of Data APPENDIX D 10/4/2017 10:05:35 AM 25 BELEWS CREEK STEAM STATION NCSS 11.0.4 Dataset P:\...\With Outliers\Belews Creek All BG Soil Data.NCSS 14 • 13 • 12 000000 ••• • • (D Cn 10 9 • 8 1 10 25 50 75 90 95 9899 Percent of Data APPENDIX D 10/4/2017 10:05:35 AM 26 BELEWS CREEK STEAM STATION NCSS 11.0.4 Dataset P:\...\With Outliers\Belews Creek All BG Soil Data.NCSS 0.8- 0.6- 0.4- 0.2- 0.0- 1 .80.6 0.4 0.2 0.01 10 25 50 75 90 95 9899 Percent of Data APPENDIX D 10/4/2017 10:05:35 AM 27 BELEWS CREEK STEAM STATION NCSS 11.0.4 Dataset P:\...\With Outliers\Belews Creek All BG Soil Data.NCSS 300- 250- 200- 150- 100- 50- 0 0025020015010050 ••~ 1 10 25 50 75 90 95 9899 Percent of Data APPENDIX D 10/4/2017 10:05:35 AM 28 BELEWS CREEK STEAM STATION NCSS 11.0.4 Dataset P:\...\With Outliers\Belews Creek All BG Soil Data.NCSS 100- 80- 60- F4 008060F4 • 40- 20- 1 0201 10 25 50 75 90 95 9899 Percent of Data APPENDIX D 10/4/2017 10:05:35 AM 29 Proposed Background Threshold Values For Naturally Occurring Concentrations in Groundwater and Soil October 2017 Belews Creek Steam Station APPENDIX E OUTLIER TEST RESULTS - SHALLOW SynTerra P:\Duke Energy Carolinas\Statistics—CAMA\BTV Reports for CSAs\Belews Creek\DRAFT\Belews Creek_BTV Report Text_CSA2_FINAL. docx BELEWS CREEK STEAM STATION Outlier Tests for Selected Uncensored Variables User Selected Options Date/Time of Computation ProUCL 5.17/13/2017 1:04:03 PM From File Belews_BG Saprolite GW Data—May 2017—for ProUCL_NCSS_No NO column.xls Full Precision OFF APPENDIX E P:1Duke Energy Carolinas\Statistics_CAMAIBTV Reports for CSAs\Belews Creek\DRAFT1AppendicestAppendix E -Outlier Test Results_ Shallow_BC.xlsx Page 1 of 45 BELEWS CREEK STEAM STATION Rosner's Outlier Test for pH Mean 5.562 Standard Deviation 0.224 Number of data 51 Number of suspected outliers 3 Potential Obs. Test Critical Critical # Mean sd outlier Number value value (5%) value (1%) 1 5.562 0.222 4.8 47 3.434 3.137 3.488 2 5.577 0.198 6 4 2.135 3.127 3.478 3 5.569 0.19 6 6 2.266 3.118 3.469 For 5% Significance Level, there is 1 Potential Outlier Potential outliers is: 4.8 For 1% Significance Level, there is no Potential Outlier APPENDIX E PADuke Energy Carolinas\Statistics_CAMAIBTV Reports for CSAs\Belews Creek\DRAF RAppendicestAppendix E - Outlier Test Results_ Shallow_BC.xlsx Page 2 of 45 BELEWS CREEK STEAM STATION Rosner's Outlier Test for Alkalinity Mean 11587 Standard Deviation 4917 Number of data 45 Number of suspected outliers 3 Potential Obs. Test Critical Critical # Mean sd outlier Number value value (5%) value (1%) 1 11587 4863 100 36 2.362 3.09 3.44 2 11848 4648 22900 5 2.378 3.08 3.43 3 11591 4375 22500 7 2.493 3.07 3.41 For 5% Significance Level, there is no Potential Outlier For 1% Significance Level, there is no Potential Outlier APPENDIX E P:1Duke Energy Carolinas\Statistics_CAMAIBTV Reports for CSAs\Belews Creek\DRAF RAppendicestAppendix E - Outlier Test Results_ Shallow_BC.xlsx Page 3 of 45 BELEWS CREEK STEAM STATION Rosner's Outlier Test for Aluminum Mean 443 Standard Deviation 1362 Number of data 33 Number of suspected outliers 3 Potential Obs. Test Critical Critical # Mean sd outlier Number value value (5%) value (1%) 1 443 1341 7950 15 5.599 2.95 3.29 2 208.4 197.7 1000 3 4.004 2.94 3.27 3 182.9 137.3 481 7 2.172 2.92 3.25 For 5% significance level, there are 2 Potential Outliers Potential outliers are: 7950, 1000 For 1% Significance Level, there are 2 Potential Outliers Potential outliers are: 7950, 1000 APPENDIX E P:1Duke Energy Carolinas\Statistics_CAMAIBTV Reports for CSAs\Belews Creek\DRAF RAppendicestAppendix E - Outlier Test Results_ Shallow_BC.xlsx Page 4 of 45 BELEWS CREEK STEAM STATION Rosner's Outlier Test for Antimony Mean 0.662 Standard Deviation 0.266 Number of data 51 Number of suspected outliers 3 Potential Obs. Test Critical Critical # Mean sd outlier Number value value (5%) value (1%) 1 0.662 0.263 0.1 15 2.134 3.137 3.488 2 0.673 0.256 0.29 45 1.496 3.127 3.478 3 0.681 0.253 0.3 2 1.508 3.118 3.469 For 5% Significance Level, there is no Potential Outlier For 1% Significance Level, there is no Potential Outlier APPENDIX E P:1Duke Energy Carolinas\Statistics_CAMAIBTV Reports for CSAs\Belews Creek\DRAF RAppendicestAppendix E - Outlier Test Results_ Shallow_BC.xlsx Page 5 of 45 BELEWS CREEK STEAM STATION Rosner's Outlier Test for Arsenic Mean 0.499 Standard Deviation 0.393 Number of data 51 Number of suspected outliers 3 Potential Obs. Test Critical Critical # Mean sd outlier Number value value (5%) value (1%) 1 0.499 0.389 1 18 1.288 3.137 3.488 2 0.489 0.39 1 19 1.31 3.127 3.478 3 0.479 0.387 1 20 1.347 3.118 3.469 For 5% Significance Level, there is no Potential Outlier For 1% Significance Level, there is no Potential Outlier APPENDIX E P:1Duke Energy Carolinas\Statistics_CAMAIBTV Reports for CSAs\Belews Creek\DRAF RAppendicestAppendix E - Outlier Test Results_ Shallow_BC.xlsx Page 6 of 45 BELEWS CREEK STEAM STATION Rosner's Outlier Test for Barium Mean 39.86 Standard Deviation 25.51 Number of data 51 Number of suspected outliers 3 Potential Obs. Test Critical Critical # Mean sd outlier Number value value (5%) value (1%) 1 39.86 25.26 118 8 3.094 3.137 3.488 2 38.29 23.17 110 3 3.095 3.127 3.478 3 36.83 20.95 110 4 3.493 3.118 3.469 For 5% significance level, there are 3 Potential Outliers Potential outliers are: 118, 110, 110 For 1% Significance Level, there are 3 Potential Outliers Potential outliers are: 118, 110, 110 APPENDIX E PADuke Energy Carolinas\Statistics_CAMAIBTV Reports for CSAs\Belews Creek\DRAF RAppendicestAppendix E -Outlier Test Results_ Shallow_BC.xlsx Page 7 of 45 BELEWS CREEK STEAM STATION Rosner's Outlier Test for Beryllium Mean 0.621 Standard Deviation 1.315 Number of data 38 Number of suspected outliers 3 Potential Obs. Test Critical Critical # Mean sd outlier Number value value (5%) value (1%) 1 0.621 1.297 5 29 3.375 3.01 3.36 2 0.502 1.109 5 30 4.056 3 3.34 3 0.377 0.819 5 38 5.644 2.99 3.33 For 5% significance level, there are 3 Potential Outliers Potential outliers are: 5, 5, 5 For 1% Significance Level, there are 3 Potential Outliers Potential outliers are: 5, 5, 5 APPENDIX E PADuke Energy Carolinas\Statistics_CAMAIBTV Reports for CSAs\Belews Creek\DRAF RAppendicestAppendix E - Outlier Test Results_ Shallow_BC.xlsx Page 8 of 45 BELEWS CREEK STEAM STATION Rosner's Outlier Test for Bicarbonate Mean 11509 Standard Deviation 5272 Number of data 33 Number of suspected outliers 3 Potential Obs. Test Critical Critical # Mean sd outlier Number value value (5%) value (1%) 1 11509 5191 22900 5 2.194 2.95 3.29 2 11153 4937 22500 7 2.298 2.94 3.27 3 10787 4556 22200 6 2.505 2.92 3.25 For 5% Significance Level, there is no Potential Outlier For 1% Significance Level, there is no Potential Outlier APPENDIX E PADuke Energy Carolinas\Statistics_CAMAIBTV Reports for CSAs\Belews Creek\DRAF RAppendicestAppendix E - Outlier Test Results_ Shallow_BC.xlsx Page 9 of 45 BELEWS CREEK STEAM STATION Rosner's Outlier Test for Boron Mean 49.13 Standard Deviation 6.248 Number of data 51 Number of suspected outliers 3 Potential Obs. # Mean sd outlier Number 1 49.13 6.186 5.38 2 50 0 50 3 50 0 50 For 5% significance level, there are 3 Potential Outliers Potential outliers are: 5.38, 50, 50 For 1% Significance Level, there are 3 Potential Outliers Potential outliers are: 5.38, 50, 50 Test Critical Critical value value (5%) value (1%) 51 7.071 3.137 3.488 1 N/A 3.127 3.478 2 N/A 3.118 3.469 APPENDIX E P:1Duke Energy Carolinas\Statistics_CAMAIBTV Reports for CSAs\Belews Creek\DRAF RAppendicestAppendix E - Outlier Test Results_ Shallow_BC.xlsx Page 10 of 45 BELEWS CREEK STEAM STATION Rosner's Outlier Test for Cadmium Mean 0.443 Standard Deviation 0.455 Number of data 51 Number of suspected outliers 3 Potential Obs. Test Critical Critical # Mean sd outlier Number value value (5%) value (1%) 1 0.443 0.45 1 18 1.238 3.137 3.488 2 0.432 0.452 1 19 1.257 3.127 3.478 3 0.42 0.449 1 20 1.291 3.118 3.469 For 5% Significance Level, there is no Potential Outlier For 1% Significance Level, there is no Potential Outlier APPENDIX E PADuke Energy Carolinas\Statistics_CAMAIBTV Reports for CSAs\Belews Creek\DRAF RAppendicestAppendix E - Outlier Test Results_ Shallow_BC.xlsx Page 11 of 45 BELEWS CREEK STEAM STATION Rosner's Outlier Test for Calcium Mean 2488 Standard Deviation 1864 Number of data 45 Number of suspected outliers 3 Potential Obs. Test Critical Critical # Mean sd outlier Number value value (5%) value (1%) 1 2488 1844 8250 6 3.126 3.09 3.44 2 2357 1663 8030 5 3.411 3.08 3.43 3 2225 1431 7260 7 3.518 3.07 3.41 For 5% significance level, there are 3 Potential Outliers Potential outliers are: 8250, 8030, 7260 For 1% Significance Level, there are 3 Potential Outliers Potential outliers are: 8250, 8030, 7260 APPENDIX E P:1Duke Energy Carolinas\Statistics_CAMAIBTV Reports for CSAs\Belews Creek\DRAF RAppendicestAppendix E - Outlier Test Results_ Shallow_BC.xlsx Page 12 of 45 BELEWS CREEK STEAM STATION Rosner's Outlier Test for Carbonate Mean 5000 Standard Deviation 0 APPENDIX E PADuke Energy Carolinas\Statistics_CAMAIBTV Reports for CSAs\Belews Creek\DRAFT1AppendicestAppendix E -Outlier Test Results_ Shallow_BC.xlsx Page 13 of 45 BELEWS CREEK STEAM STATION Rosner's Outlier Test for Chloride Mean 5258 Standard Deviation 4983 Number of data 37 Number of suspected outliers 3 Potential Obs. Test Critical Critical # Mean sd outlier Number value value (5%) value (1%) 1 5258 4915 18800 5 2.755 3 3.34 2 4882 4489 14700 7 2.187 2.99 3.33 3 4601 4223 14000 8 2.226 2.98 3.32 For 5% Significance Level, there is no Potential Outlier For 1% Significance Level, there is no Potential Outlier APPENDIX E PADuke Energy Carolinas\Statistics_CAMAIBTV Reports for CSAs\Belews Creek\DRAF RAppendicestAppendix E - Outlier Test Results_ Shallow_BC.xlsx Page 14 of 45 BELEWS CREEK STEAM STATION Rosner's Outlier Test for Chromium VI Mean 0.84 Standard Deviation 0.555 Number of data 27 Number of suspected outliers 3 Potential Obs. Test Critical Critical # Mean sd outlier Number value value (5%) value (1%) 1 0.84 0.545 2.3 13 2.68 2.86 3.18 2 0.784 0.482 2 5 2.525 2.84 3.16 3 0.735 0.421 1.5 7 1.815 2.82 3.14 For 5% Significance Level, there is no Potential Outlier For 1% Significance Level, there is no Potential Outlier APPENDIX E PADuke Energy Carolinas\Statistics_CAMAIBTV Reports for CSAs\Belews CreekIDRAF RAppendicestAppendix E - Outlier Test Results_ Shallow_BC.xlsx Page 15 of 45 BELEWS CREEK STEAM STATION Rosner's Outlier Test for Chromium Mean 3.15 Standard Deviation 2.266 Number of data 51 Number of suspected outliers 3 Potential Obs. Test Critical Critical # Mean sd outlier Number value value (5%) value (1%) 1 3.15 2.244 11.3 48 3.633 3.137 3.488 2 2.987 1.964 8 25 2.553 3.127 3.478 3 2.884 1.845 5.4 4 1.364 3.118 3.469 For 5% Significance Level, there is 1 Potential Outlier Potential outliers is: 11.3 For 1% Significance Level, there is 1 Potential Outlier Potential outliers is: 11.3 APPENDIX E P:1Duke Energy Carolinas\Statistics_CAMAIBTV Reports for CSAs\Belews Creek\DRAF RAppendicestAppendix E - Outlier Test Results_ Shallow_BC.xlsx Page 16 of 45 BELEWS CREEK STEAM STATION Rosner's Outlier Test for Cobalt Mean 0.328 Standard Deviation 0.321 Number of data 38 Number of suspected outliers 3 Potential Obs. Test Critical Critical # Mean sd outlier Number value value (5%) value (1%) 1 0.328 0.317 1.3 15 3.069 3.01 3.36 2 0.302 0.281 1 18 2.486 3 3.34 3 0.282 0.259 1 26 2.776 2.99 3.33 For 5% Significance Level, there is 1 Potential Outlier Potential outliers is: 1.3 For 1% Significance Level, there is no Potential Outlier APPENDIX E P:1Duke Energy Carolinas\Statistics_CAMAIBTV Reports for CSAs\Belews Creek\DRAF RAppendicestAppendix E - Outlier Test Results_ Shallow_BC.xlsx Page 17 of 45 BELEWS CREEK STEAM STATION Rosner's Outlier Test for Copper Mean 2.382 Standard Deviation 2.115 Number of data 51 Number of suspected outliers 3 Potential Obs. Test Critical Critical # Mean sd outlier Number value value (5%) value (1%) 1 2.382 2.094 5 18 1.25 3.137 3.488 2 2.33 2.103 5 19 1.27 3.127 3.478 3 2.275 2.089 5 20 1.304 3.118 3.469 For 5% Significance Level, there is no Potential Outlier For 1% Significance Level, there is no Potential Outlier APPENDIX E PADuke Energy Carolinas\Statistics_CAMAIBTV Reports for CSAs\Belews Creek\DRAF RAppendicestAppendix E - Outlier Test Results_ Shallow_BC.xlsx Page 18 of 45 BELEWS CREEK STEAM STATION Rosner's Outlier Test for Iron Mean 452.3 Standard Deviation 1553 Number of data 51 Number of suspected outliers 3 Potential Obs. Test Critical Critical # Mean sd outlier Number value value (5%) value (1%) 1 452.3 1538 11100 15 6.923 3.137 3.488 2 239.4 319.4 1600 3 4.26 3.127 3.478 3 211.6 254.5 1280 44 4.198 3.118 3.469 For 5% significance level, there are 3 Potential Outliers Potential outliers are: 11100, 1600, 1280 For 1% Significance Level, there are 3 Potential Outliers Potential outliers are: 11100, 1600, 1280 APPENDIX E P:1Duke Energy Carolinas\Statistics_CAMAIBTV Reports for CSAs\Belews CreekIDRAF RAppendicestAppendix E - Outlier Test Results_ Shallow_BC.xlsx Page 19 of 45 BELEWS CREEK STEAM STATION Rosner's Outlier Test for Lead Mean 0.491 Standard Deviation 0.49 Number of data 51 Number of suspected outliers 3 Potential Obs. Test Critical Critical # Mean sd outlier Number value value (5%) value (1%) 1 0.491 0.485 2.4 15 3.935 3.137 3.488 2 0.453 0.411 1 18 1.33 3.127 3.478 3 0.442 0.408 1 19 1.369 3.118 3.469 For 5% Significance Level, there is 1 Potential Outlier Potential outliers is: 2.4 For 1% Significance Level, there is 1 Potential Outlier Potential outliers is: 2.4 APPENDIX E PADuke Energy Carolinas\Statistics_CAMAIBTV Reports for CSAs\Belews Creek\DRAF RAppendicestAppendix E - Outlier Test Results_ Shallow_BC.xlsx Page 20 of 45 BELEWS CREEK STEAM STATION Rosner's Outlier Test for Magnesium Mean 1204 Standard Deviation 987.2 Number of data 45 Number of suspected outliers 3 Potential Obs. # Mean sd outlier Number 1 1204 976.2 4230 2 1135 882.9 3970 3 1069 776.1 3610 For 5% significance level, there are 3 Potential Outliers Potential outliers are: 4230, 3970, 3610 For 1% Significance Level, there is no Potential Outlier Test Critical Critical value value (5%) value (1%) 5 3.1 3.09 3.44 6 3.211 3.08 3.43 7 3.274 3.07 3.41 APPENDIX E P:1Duke Energy Carolinas\Statistics_CAMAIBTV Reports for CSAs\Belews Creek\DRAF RAppendicestAppendix E - Outlier Test Results_ Shallow_BC.xlsx Page 21 of 45 BELEWS CREEK STEAM STATION Rosner's Outlier Test for Manganese Mean 13.96 Standard Deviation 26.16 Number of data 51 Number of suspected outliers 3 Potential Obs. Test Critical Critical # Mean sell outlier Number value value (5%) value (1%) 1 13.96 25.9 189 15 6.758 3.137 3.488 2 10.46 7.776 31 3 2.641 3.127 3.478 3 10.04 7.264 29 9 2.609 3.118 3.469 For 5% Significance Level, there is 1 Potential Outlier Potential outliers is: 189 For 1% Significance Level, there is 1 Potential Outlier Potential outliers is: 189 APPENDIX E PADuke Energy Carolinas\Statistics_CAMAIBTV Reports for CSAs\Belews Creek\DRAF RAppendicestAppendix E - Outlier Test Results_ Shallow_BC.xlsx Page 22 of 45 BELEWS CREEK STEAM STATION Rosner's Outlier Test for Mercury Mean 0.14 Standard Deviation 0.0761 Number of data 51 Number of suspected outliers 3 Potential Obs. Test Critical Critical # Mean sell outlier Number value value (5%) value (1%) 1 0.14 0.0753 0.007 43 1.762 3.137 3.488 2 0.142 0.0744 0.02 45 1.644 3.127 3.478 3 0.145 0.0731 0.05 18 1.299 3.118 3.469 For 5% Significance Level, there is no Potential Outlier For 1% Significance Level, there is no Potential Outlier APPENDIX E PADuke Energy Carolinas\Statistics_CAMAIBTV Reports for CSAs\Belews Creek\DRAF RAppendicestAppendix E - Outlier Test Results_ Shallow_BC.xlsx Page 23 of 45 BELEWS CREEK STEAM STATION Rosner's Outlier Test for Methane Mean 5.953 Standard Deviation 4.259 Number of data 31 Number of suspected outliers 3 Potential Obs. Test Critical Critical # Mean sd outlier Number value value (5%) value (1%) 1 5.953 4.19 0.85 9 1.218 2.92 3.25 2 6.123 4.223 1.3 4 1.142 2.91 3.24 3 6.29 4.197 1.3 10 1.189 2.89 3.22 For 5% Significance Level, there is no Potential Outlier For 1% Significance Level, there is no Potential Outlier APPENDIX E PADuke Energy Carolinas\Statistics_CAMAIBTV Reports for CSAs\Belews Creek\DRAF RAppendicestAppendix E - Outlier Test Results_ Shallow_BC.xlsx Page 24 of 45 BELEWS CREEK STEAM STATION Rosner's Outlier Test for Molybdenum Mean 0.435 Standard Deviation 0.219 Number of data 33 Number of suspected outliers 3 Potential Obs. Test Critical Critical # Mean sd outlier Number value value (5%) value (1%) 1 0.435 0.215 1 18 2.623 2.95 3.29 2 0.418 0.197 1 26 2.959 2.94 3.27 3 0.399 0.168 0.1 21 1.777 2.92 3.25 For 5% significance level, there are 2 Potential Outliers Potential outliers are: 1, 1 For 1% Significance Level, there is no Potential Outlier APPENDIX E PADuke Energy Carolinas\Statistics_CAMAIBTV Reports for CSAs\Belews Creek\DRAF RAppendicestAppendix E - Outlier Test Results_ Shallow_BC.xlsx Page 25 of 45 BELEWS CREEK STEAM STATION Rosner's Outlier Test for Nickel Mean 2.557 Standard Deviation 2.16 Number of data 51 Number of suspected outliers 3 Potential Obs. Test Critical Critical # Mean sd outlier Number value value (5%) value (1%) 1 2.557 2.139 8.8 48 2.918 3.137 3.488 2 2.432 1.988 5 18 1.292 3.127 3.478 3 2.38 1.973 5 19 1.328 3.118 3.469 For 5% Significance Level, there is no Potential Outlier For 1% Significance Level, there is no Potential Outlier APPENDIX E PADuke Energy Carolinas\Statistics_CAMAIBTV Reports for CSAs\Belews Creek\DRAF RAppendicestAppendix E - Outlier Test Results_ Shallow_BC.xlsx Page 26 of 45 BELEWS CREEK STEAM STATION Rosner's Outlier Test for Nitrate Nitrite Mean 902.9 Standard Deviation 1219 Number of data 31 Number of suspected outliers 3 Potential Obs. Test Critical Critical # Mean sd outlier Number value value (5%) value (1%) 1 902.9 1200 3800 14 2.415 2.92 3.25 2 806.4 1113 3200 15 2.15 2.91 3.24 3 723.8 1035 3100 9 2.295 2.89 3.22 For 5% Significance Level, there is no Potential Outlier For 1% Significance Level, there is no Potential Outlier APPENDIX E PADuke Energy Carolinas\Statistics_CAMAIBTV Reports for CSAs\Belews Creek\DRAF RAppendicestAppendix E - Outlier Test Results_ Shallow_BC.xlsx Page 27 of 45 BELEWS CREEK STEAM STATION Rosner's Outlier Test for Potassium Mean 3746 Standard Deviation 1869 Number of data 45 Number of suspected outliers 3 Potential Obs. Test Critical Critical # Mean sd outlier Number value value (5%) value (1%) 1 3746 1849 100 36 1.973 3.09 3.44 2 3829 1805 628 25 1.773 3.08 3.43 3 3904 1757 647 23 1.853 3.07 3.41 For 5% Significance Level, there is no Potential Outlier For 1% Significance Level, there is no Potential Outlier APPENDIX E PADuke Energy Carolinas\Statistics_CAMAIBTV Reports for CSAs\Belews Creek\DRAF RAppendicestAppendix E - Outlier Test Results_ Shallow_BC.xlsx Page 28 of 45 BELEWS CREEK STEAM STATION Rosner's Outlier Test for Selenium Mean 0.7 Standard Deviation 0.266 Number of data 51 Number of suspected outliers 3 Potential Obs. Test Critical Critical # Mean sd outlier Number value value (5%) value (1%) 1 0.7 0.264 1.4 15 2.654 3.137 3.488 2 0.686 0.249 0.321 44 1.466 3.127 3.478 3 0.694 0.246 1 18 1.244 3.118 3.469 For 5% Significance Level, there is no Potential Outlier For 1% Significance Level, there is no Potential Outlier APPENDIX E PADuke Energy Carolinas\Statistics_CAMAIBTV Reports for CSAs\Belews Creek\DRAF RAppendicestAppendix E - Outlier Test Results_ Shallow_BC.xlsx Page 29 of 45 BELEWS CREEK STEAM STATION Rosner's Outlier Test for Sodium Mean 4715 Standard Deviation 1422 Number of data 45 Number of suspected outliers 3 Potential Obs. Test Critical Critical # Mean sd outlier Number value value (5%) value (1%) 1 4715 1406 50 36 3.318 3.09 3.44 2 4821 1246 7210 6 1.918 3.08 3.43 3 4766 1204 7030 5 1.881 3.07 3.41 For 5% Significance Level, there is 1 Potential Outlier Potential outliers is: 50 For 1% Significance Level, there is no Potential Outlier APPENDIX E PADuke Energy Carolinas\Statistics_CAMAIBTV Reports for CSAs\Belews Creek\DRAF RAppendicestAppendix E - Outlier Test Results_ Shallow_BC.xlsx Page 30 of 45 BELEWS CREEK STEAM STATION Rosner's Outlier Test for Strontium Mean 25.58 Standard Deviation 13.74 Number of data 32 Number of suspected outliers 3 Potential Obs. Test Critical Critical # Mean sd outlier Number value value (5%) value (1%) 1 25.58 13.53 54.4 6 2.131 2.94 3.27 2 24.65 12.91 48 5 1.81 2.92 3.25 3 23.87 12.36 45.9 8 1.782 2.91 3.24 For 5% Significance Level, there is no Potential Outlier For 1% Significance Level, there is no Potential Outlier APPENDIX E PADuke Energy Carolinas\Statistics_CAMAIBTV Reports for CSAs\Belews Creek\DRAF RAppendicestAppendix E - Outlier Test Results_ Shallow_BC.xlsx Page 31 of 45 BELEWS CREEK STEAM STATION Rosner's Outlier Test for Sulfate Mean 799.8 Standard Deviation 521.4 Number of data 51 Number of suspected outliers 3 Potential Obs. Test # Mean sd outlier Number value 1 799.8 516.2 2400 21 2 767.8 473.4 2300 22 3 736.5 422.9 2000 23 For 5% significance level, there are 2 Potential Outliers Potential outliers are: 2400, 2300 For 1% Significance Level, there is no Potential Outlier Critical Critical value (5%) value (1%) 3.1 3.137 3.488 3.237 3.127 3.478 2.988 3.118 3.469 APPENDIX E PADuke Energy Carolinas\Statistics_CAMAIBTV Reports for CSAs\Belews Creek\DRAF RAppendicestAppendix E - Outlier Test Results_ Shallow_BC.xlsx Page 32 of 45 BELEWS CREEK STEAM STATION Rosner's Outlier Test for Sulfide Mean 90.33 Standard Deviation 30.02 Number of data 31 Number of suspected outliers 3 Potential Obs. Test Critical Critical # Mean sd outlier Number value value (5%) value (1%) 1 90.33 29.54 0.1 6 3.055 2.92 3.25 2 93.34 25.35 0.1 13 3.679 2.91 3.24 3 96.56 18.55 0.1 22 5.199 2.89 3.22 For 5% significance level, there are 3 Potential Outliers Potential outliers are: 0.1, 0.1, 0.1 For 1% Significance Level, there are 3 Potential Outliers Potential outliers are: 0.1, 0.1, 0.1 APPENDIX E PADuke Energy Carolinas\Statistics_CAMAIBTV Reports for CSAs\Belews Creek\DRAF RAppendicestAppendix E - Outlier Test Results_ Shallow_BC.xlsx Page 33 of 45 BELEWS CREEK STEAM STATION Rosner's Outlier Test for TDS Mean 45298 Standard Deviation 19652 Number of data 51 Number of suspected outliers 3 Potential Obs. Test Critical Critical # Mean sell outlier Number value value (5%) value (1%) 1 45298 19459 37 13 2.326 3.137 3.488 2 46203 18747 48 36 2.462 3.127 3.478 3 47145 17706 88 6 2.658 3.118 3.469 For 5% Significance Level, there is no Potential Outlier For 1% Significance Level, there is no Potential Outlier APPENDIX E PADuke Energy Carolinas\Statistics_CAMAIBTV Reports for CSAs\Belews Creek\DRAF RAppendicestAppendix E - Outlier Test Results_ Shallow_BC.xlsx Page 34 of 45 BELEWS CREEK STEAM STATION Rosner's Outlier Test for Thallium Mean 0.112 Standard Deviation 0.0706 Number of data 47 Number of suspected outliers 3 Potential Obs. Test Critical Critical # Mean sd outlier Number value value (5%) value (1%) 1 0.112 0.0698 0.016 3 1.371 3.1 3.46 2 0.114 0.0699 0.018 14 1.371 3.09 3.45 3 0.116 0.0691 0.019 44 1.402 3.09 3.44 For 5% Significance Level, there is no Potential Outlier For 1% Significance Level, there is no Potential Outlier APPENDIX E PADuke Energy Carolinas\Statistics_CAMAIBTV Reports for CSAs\Belews Creek\DRAF RAppendicestAppendix E - Outlier Test Results_ Shallow_BC.xlsx Page 35 of 45 BELEWS CREEK STEAM STATION Dixon's Outlier Test for TOC Number of Observations = 19 10% critical value: 0.412 5% critical value: 0.462 1% critical value: 0.547 1. Observation Value 8200 is a Potential Outlier (Upper Tail)? Test Statistic: 1.000 For 10% significance level, 8200 is an outlier. For 5% significance level, 8200 is an outlier. For 1% significance level, 8200 is an outlier. 2. Observation Value 570 is a Potential Outlier (Lower Tail)? Test Statistic: 1.000 For 10% significance level, 570 is an outlier. For 5% significance level, 570 is an outlier. For 1% significance level, 570 is an outlier. APPENDIX E PADuke Energy Carolinas\Statistics_CAMAIBTV Reports for CSAs\Belews Creek\DRAF RAppendicestAppendix E - Outlier Test Results_ Shallow_BC.xlsx Page 36 of 45 BELEWS CREEK STEAM STATION Rosner's Outlier Test for Vanadium Mean 0.822 Standard Deviation 1.023 Number of data 37 Number of suspected outliers 3 Potential Obs. Test Critical Critical # Mean sd outlier Number value value (5%) value (1%) 1 0.822 1.009 6.4 15 5.526 3 3.34 2 0.668 0.404 2.01 30 3.32 2.99 3.33 3 0.629 0.337 1.3 8 1.988 2.98 3.32 For 5% significance level, there are 2 Potential Outliers Potential outliers are: 6.4, 2.01 For 1% Significance Level, there is 1 Potential Outlier Potential outliers is: 6.4 APPENDIX E PADuke Energy Carolinas\Statistics_CAMAIBTV Reports for CSAs\Belews Creek\DRAF RAppendicestAppendix E - Outlier Test Results_ Shallow_BC.xlsx Page 37 of 45 BELEWS CREEK STEAM STATION Rosner's Outlier Test for Zinc Mean 7.84 Standard Deviation 6.357 Number of data 51 Number of suspected outliers 3 Potential Obs. Test Critical Critical # Mean sd outlier Number value value (5%) value (1%) 1 7.84 6.295 38.7 15 4.903 3.137 3.488 2 7.223 4.628 27.9 48 4.468 3.127 3.478 3 6.801 3.574 23 4 4.533 3.118 3.469 For 5% significance level, there are 3 Potential Outliers Potential outliers are: 38.7, 27.9, 23 For 1% Significance Level, there are 3 Potential Outliers Potential outliers are: 38.7, 27.9, 23 APPENDIX E PADuke Energy Carolinas\Statistics_CAMAIBTV Reports for CSAs\Belews Creek\DRAF RAppendicestAppendix E - Outlier Test Results_ Shallow_BC.xlsx Page 38 of 45 BELEWS CREEK STEAM STATION Dixon's Outlier Test for Radium Number of Observations = 18 10% critical value: 0.424 5% critical value: 0.475 1% critical value: 0.561 1. Observation Value 8.74 is a Potential Outlier (Upper Tail)? Test Statistic: 0.893 For 10% significance level, 8.74 is an outlier. For 5% significance level, 8.74 is an outlier. For 1% significance level, 8.74 is an outlier. 2. Observation Value -0.076 is a Potential Outlier (Lower Tail)? Test Statistic: 0.212 For 10% significance level, -0.076 is not an outlier. For 5% significance level, -0.076 is not an outlier. For 1% significance level, -0.076 is not an outlier. APPENDIX E PADuke Energy Carolinas\Statistics_CAMAIBTV Reports for CSAs\Belews Creek\DRAF RAppendicestAppendix E - Outlier Test Results_ Shallow_BC.xlsx Page 39 of 45 BELEWS CREEK STEAM STATION Dixon's Outlier Test for Uranium Number of Observations = 19 10% critical value: 0.412 5% critical value: 0.462 1% critical value: 0.547 1. Observation Value 0.5 is a Potential Outlier (Upper Tail)? Test Statistic: 0.000 For 10% significance level, 0.5 is not an outlier. For 5% significance level, 0.5 is not an outlier. For 1% significance level, 0.5 is not an outlier. 2. Observation Value 0.076 is a Potential Outlier (Lower Tail)? Test Statistic: 0.406 For 10% significance level, 0.076 is not an outlier. For 5% significance level, 0.076 is not an outlier. For 1% significance level, 0.076 is not an outlier. APPENDIX E PADuke Energy Carolinas\Statistics_CAMAIBTV Reports for CSAs\Belews Creek\DRAF RAppendicestAppendix E - Outlier Test Results_ Shallow_BC.xlsx Page 40 of 45 BELEWS CREEK STEAM STATION Outlier Tests for Selected Uncensored Variables User Selected Options Date/Time of Computation ProUCL 5.17/13/2017 1:15:27 PM From File Belews_BG Saprolite GW Data—May 2017—for ProUCL_NCSS_No NO column.xls Full Precision OFF APPENDIX E P:1Duke Energy Carolinas\Statistics_CAMAIBTV Reports for CSAs\Belews Creek\DRAFT1AppendicestAppendix E -Outlier Test Results_ Shallow_BC.xlsx Page 41 of 45 BELEWS CREEK STEAM STATION Rosner's Outlier Test for Barium Mean 39.86 Standard Deviation value 25.51 Number of data value (1%) 51 Number of suspected outliers 3.137 5 3 3.095 Potential Obs. # Mean sd 4 outlier Number 1 39.86 25.26 118 2 38.29 23.17 110 3 36.83 20.95 110 4 35.31 18.21 102 5 33.89 15.5 68.8 For 5% significance level, there are 4 Potential Outliers Potential outliers are: 118, 110, 110, 102 For 1% Significance Level, there are 4 Potential Outliers Potential outliers are: 118, 110, 110, 102 Test Critical Critical value value (5%) value (1%) 8 3.094 3.137 3.488 3 3.095 3.127 3.478 4 3.493 3.118 3.469 15 3.662 3.108 3.468 47 2.253 3.098 3.458 APPENDIX E PADuke Energy Carolinas\Statistics_CAMAIBTV Reports for CSAs\Belews Creek\DRAF RAppendicestAppendix E - Outlier Test Results_ Shallow_BC.xlsx Page 42 of 45 BELEWS CREEK STEAM STATION Rosner's Outlier Test for Beryllium Mean 0.621 Standard Deviation value 1.315 Number of data value (1%) 38 Number of suspected outliers 3.01 5 30 4.056 Potential Obs. # Mean sd 38 outlier Number 1 0.621 1.297 5 2 0.502 1.109 5 3 0.377 0.819 5 4 0.245 0.21 1 5 0.223 0.166 1 For 5% significance level, there are 5 Potential Outliers Potential outliers are: 5, 5, 5, 1, 1 For 1% Significance Level, there are 5 Potential Outliers Potential outliers are: 5, 5, 5, 1, 1 Test Critical Critical value value (5%) value (1%) 29 3.375 3.01 3.36 30 4.056 3 3.34 38 5.644 2.99 3.33 18 3.593 2.98 3.32 26 4.67 2.97 3.3 APPENDIX E PADuke Energy Carolinas\Statistics_CAMAIBTV Reports for CSAs\Belews Creek\DRAF RAppendicestAppendix E - Outlier Test Results_ Shallow_BC.xlsx Page 43 of 45 BELEWS CREEK STEAM STATION Outlier Tests for Selected Uncensored Variables User Selected Options Date/Time of Computation ProUCL 5.17/13/2017 1:17:31 PM From File Belews_BG Saprolite GW Data—May 2017—for ProUCL_NCSS_No NO column.xls Full Precision OFF APPENDIX E PADuke Energy Carolinas\Statistics_CAMAIBTV Reports for CSAs\Belews Creek\DRAFT\AppendicestAppendix E -Outlier Test Results_ Shallow_BC.xlsx Page 44 of 45 BELEWS CREEK STEAM STATION Mean Standard Deviation Number of data Number of suspected outliers Potential # Mean sd outlier 1 799.8 516.2 2 767.8 473.4 3 736.5 422.9 4 710.2 384.7 5 684.9 346.1 Rosner's Outlier Test for Sulfate 799.8 521.4 51 5 Obs. Test Number value 2400 21 2300 22 2000 23 1900 24 0.88 36 For 5% significance level, there are 2 Potential Outliers Potential outliers are: 2400, 2300 For 1% Significance Level, there is no Potential Outlier Critical Critical value (5%) value (1%) 3.1 3.137 3.488 3.237 3.127 3.478 2.988 3.118 3.469 3.093 3.108 3.468 1.977 3.098 3.458 APPENDIX E PADuke Energy Carolinas\Statistics_CAMAIBTV Reports for CSAs\Belews Creek\DRAF RAppendicestAppendix E - Outlier Test Results_ Shallow_BC.xlsx Page 45 of 45 Proposed Background Threshold Values For Naturally Occurring Concentrations in Groundwater and Soil October 2017 Belews Creek Steam Station APPENDIX F OUTLIER TEST RESULTS - DEEP SynTerra P:\Duke Energy Carolinas\Statistics—CAMA\BTV Reports for CSAs\Belews Creek\DRAFT\Belews Creek_BTV Report Text_CSA2_FINAL. docx BELEWS CREEK STEAM STATION Outlier Tests for Selected Uncensored Variables User Selected Options Date/Time of Computation ProUCL 5.17/13/2017 3:03:29 PM From File Belews_BG TZ GW Data—May 2017—for ProUCL_NCSS.xls Full Precision OFF APPENDIX F P:\Duke Energy Carolinas\Statistics_CAMA\BTV Reports for CSAs\Belews Creek\DRAFT\Appendices\Appendix F - Outlier Test Results—Deep—BC Page 1 of 40 BELEWS CREEK STEAM STATION Rosner's Outlier Test for pH Mean 6.137 Standard Deviation 0.377 Number of data 49 Number of suspected outliers 3 Potential Obs. Test Critical Critical # Mean sd outlier Number value value (5%) value (1%) 1 6.137 0.373 7 22 2.314 3.12 3.47 2 6.119 0.359 6.9 10 2.176 3.11 3.46 3 6.103 0.344 6.9 48 2.321 3.1 3.46 For 5% Significance Level, there is no Potential Outlier For 1% Significance Level, there is no Potential Outlier APPENDIX F PADuke Energy Carolinas\Statistics_CAMA\BTV Reports for CSAs\Belews Creek\DRAFT\Appendices\Appendix F - Outlier Test Results—Deep—BC Page 2 of 40 BELEWS CREEK STEAM STATION Rosner's Outlier Test for Alkalinity Mean 29711 Standard Deviation 12492 Number of data 46 Number of suspected outliers 3 Potential Obs. Test Critical Critical # Mean sd outlier Number value value (5%) value (1%) 1 29711 12355 58800 9 2.354 3.09 3.45 2 29064 11829 51700 18 1.914 3.09 3.44 3 28550 11446 50800 19 1.944 3.08 3.43 For 5% Significance Level, there is no Potential Outlier For 1% Significance Level, there is no Potential Outlier APPENDIX F P:\Duke Energy Carolinas\Statistics_CAMA\BTV Reports for CSAs\Belews Creek\DRAFT\Appendices\Appendix F - Outlier Test Results—Deep—BC Page 3 of 40 BELEWS CREEK STEAM STATION Mean Standard Deviation Number of data Number of suspected outliers Rosner's Outlier Test for Aluminum 155 334.6 40 3 Potential Obs. Test # Mean sd outlier Number value 1 155 330.4 2200 20 2 102.6 44.99 315 38 3 96.98 28.76 217 36 For 5% significance level, there are 3 Potential Outliers Potential outliers are: 2200, 315, 217 For 1% Significance Level, there are 3 Potential Outliers Potential outliers are: 2200, 315, 217 Critical Critical value (5%) value (1%) 6.19 3.04 3.38 4.722 3.03 3.37 4.174 3.01 3.36 APPENDIX F P:\Duke Energy Carolinas\Statistics_CAMA\BTV Reports for CSAs\Belews Creek\DRAFT\Appendices\Appendix F - Outlier Test Results—Deep—BC Page 4 of 40 BELEWS CREEK STEAM STATION Rosner's Outlier Test for Antimony Mean 0.559 Standard Deviation 0.321 Number of data 48 Number of suspected outliers 3 Potential Obs. Test Critical Critical # Mean sd outlier Number value value (5%) value (1%) 1 0.559 0.318 1.5 1 2.961 3.11 3.46 2 0.539 0.293 1.16 38 2.121 3.1 3.46 3 0.526 0.281 1 30 1.689 3.09 3.45 For 5% Significance Level, there is no Potential Outlier For 1% Significance Level, there is no Potential Outlier APPENDIX F P:\Duke Energy Carolinas\Statistics_CAMA\BTV Reports for CSAs\Belews Creek\DRAFT\Appendices\Appendix F - Outlier Test Results—Deep—BC Page 5 of 40 BELEWS CREEK STEAM STATION Rosner's Outlier Test for Arsenic Mean 0.382 Standard Deviation 0.362 Number of data 48 Number of suspected outliers 3 Potential Obs. Test Critical Critical # Mean sd outlier Number value value (5%) value (1%) 1 0.382 0.358 1 30 1.726 3.11 3.46 2 0.368 0.354 1 31 1.783 3.1 3.46 3 0.355 0.345 1 32 1.869 3.09 3.45 For 5% Significance Level, there is no Potential Outlier For 1% Significance Level, there is no Potential Outlier APPENDIX F P:\Duke Energy Carolinas\Statistics_CAMA\BTV Reports for CSAs\Belews Creek\DRAFT\Appendices\Appendix F - Outlier Test Results—Deep—BC Page 6 of 40 BELEWS CREEK STEAM STATION Rosner's Outlier Test for Barium Mean 7.569 Standard Deviation 6.779 Number of data 48 Number of suspected outliers 3 Potential Obs. Test Critical Critical # Mean sd outlier Number value value (5%) value (1%) 1 7.569 6.708 51 20 6.475 3.11 3.46 2 6.645 2.253 14.8 29 3.62 3.1 3.46 3 6.467 1.918 11 30 2.363 3.09 3.45 For 5% significance level, there are 2 Potential Outliers Potential outliers are: 51, 14.8 For 1% Significance Level, there are 2 Potential Outliers Potential outliers are: 51, 14.8 APPENDIX F P:\Duke Energy Carolinas\Statistics_CAMA\BTV Reports for CSAs\Belews Creek\DRAFT\Appendices\Appendix F - Outlier Test Results—Deep-13C Page 7 of 40 BELEWS CREEK STEAM STATION Rosner's Outlier Test for Beryllium Mean 0.164 Standard Deviation 0.21 Number of data 40 Number of suspected outliers 3 Potential Obs. Test Critical Critical # Mean sd outlier Number value value (5%) value (1%) 1 0.164 0.207 1 30 4.029 3.04 3.38 2 0.143 0.163 1 38 5.272 3.03 3.37 3 0.12 0.0823 0.33 20 2.548 3.01 3.36 For 5% significance level, there are 2 Potential Outliers Potential outliers are: 1, 1 For 1% Significance Level, there are 2 Potential Outliers Potential outliers are: 1, 1 APPENDIX F PADuke Energy Carolinas\Statistics_CAMAIBTV Reports for CSAslBelews CreekORAFT1AppendiceslAppendix F - Outlier Test Results—Deep—BC Page 8 of 40 BELEWS CREEK STEAM STATION Rosner's Outlier Test for Bicarbonate Mean 29288 Standard Deviation 14362 Number of data 40 Number of suspected outliers 3 Potential Obs. Test Critical Critical # Mean sd outlier Number value value (5%) value (1%) 1 29288 14181 58800 9 2.081 3.04 3.38 2 28531 13718 5000 29 1.715 3.03 3.37 3 29150 13339 5000 40 1.811 3.01 3.36 For 5% Significance Level, there is no Potential Outlier For 1% Significance Level, there is no Potential Outlier APPENDIX F PADuke Energy Carolinas\Statistics_CAMA\BTV Reports for CSAs\Belews Creek\DRAFT\Appendices\Appendix F - Outlier Test Results—Deep—BC Page 9 of 40 BELEWS CREEK STEAM STATION Mean Standard Deviation Number of data Number of suspected outliers Rosner's Outlier Test for Boron 48.59 5.164 48 3 Potential Obs. # Mean sd outlier Number 1 48.59 5.11 28 2 49.03 4.223 29 3 49.47 3.02 29.9 For 5% significance level, there are 3 Potential Outliers Potential outliers are: 28, 29, 29.9 For 1% Significance Level, there are 3 Potential Outliers Potential outliers are: 28, 29, 29.9 Test Critical Critical value value (5%) value (1%) 48 4.03 3.11 3.46 2 4.744 3.1 3.46 7 6.48 3.09 3.45 APPENDIX F P:\Duke Energy Carolinas\Statistics_CAMA\BTV Reports for CSAs\Belews Creek\DRAFT\Appendices\Appendix F - Outlier Test Results—Deep—BC Page 10 of 40 BELEWS CREEK STEAM STATION Rosner's Outlier Test for Cadmium Mean 0.271 Standard Deviation 0.378 Number of data 48 Number of suspected outliers 3 Potential Obs. Test Critical Critical # Mean sd outlier Number value value (5%) value (1%) 1 0.271 0.374 1 30 1.946 3.11 3.46 2 0.256 0.367 1 31 2.03 3.1 3.46 3 0.24 0.353 1 32 2.152 3.09 3.45 For 5% Significance Level, there is no Potential Outlier For 1% Significance Level, there is no Potential Outlier APPENDIX F PADuke Energy Carolinas\Statistics_CAMA\BTV Reports for CSAs\Belews Creek\DRAFT\Appendices\Appendix F - Outlier Test Results—Deep—BC Page 11 of 40 BELEWS CREEK STEAM STATION Rosner's Outlier Test for Calcium Mean 6060 Standard Deviation 3672 Number of data 46 Number of suspected outliers 3 Potential Obs. Test Critical Critical # Mean sd outlier Number value value (5%) value (1%) 1 6060 3632 13700 16 2.104 3.09 3.45 2 5890 3526 13700 18 2.215 3.09 3.44 3 5713 3357 13600 15 2.349 3.08 3.43 For 5% Significance Level, there is no Potential Outlier For 1% Significance Level, there is no Potential Outlier APPENDIX F PADuke Energy Carolinas\Statistics_CAMA\BTV Reports for CSAs\Belews Creek\DRAFT\Appendices\Appendix F - Outlier Test Results—Deep—BC Page 12 of 40 BELEWS CREEK STEAM STATION Mean Standard Deviation Rosner's Outlier Test for Chloride Mean Standard Deviation Number of data Number of suspected outliers Rosner's Outlier Test for Carbonate 5000 0 6388 4913 39 3 Potential Obs. Test # Mean sd outlier Number value 1 6388 4850 20300 16 2 6022 4407 18900 17 3 5674 3903 15300 18 For 5% Significance Level, there is no Potential Outlier For 1% Significance Level, there is no Potential Outlier Critical Critical value (5%) value (1%) 2.868 3.03 3.37 2.922 3.01 3.36 2.466 3 3.34 APPENDIX F PADuke Energy Carolinas\Statistics_CAMA\BTV Reports for CSAs\Belews Creek\DRAFT\Appendices\Appendix F - Outlier Test Results—Deep—BC Page 13 of 40 BELEWS CREEK STEAM STATION Mean Standard Deviation Number of data Number of suspected outliers Rosner's Outlier Test for Chromium VI 0.154 0.125 33 3 Potential Obs. # Mean sd outlier Number 1 0.154 0.123 0.54 2 0.142 0.105 0.44 3 0.132 0.0914 0.36 For 5% Significance Level, there is 1 Potential Outlier Potential outliers is: 0.54 For 1% Significance Level, there is no Potential Outlier Test Critical Critical value value (5%) value (1%) 32 3.15 2.95 3.29 16 2.839 2.94 3.27 25 2.495 2.92 3.25 APPENDIX F P:\Duke Energy Carolinas\Statistics_CAMA\BTV Reports for CSAs\Belews Creek\DRAFT\Appendices\Appendix F - Outlier Test Results—Deep—BC Page 14 of 40 BELEWS CREEK STEAM STATION Rosner's Outlier Test for Chromium Mean 1.832 Standard Deviation 1.752 Number of data 48 Number of suspected outliers 3 Potential Obs. Test Critical Critical # Mean sd outlier Number value value (5%) value (1%) 1 1.832 1.733 5 30 1.828 3.11 3.46 2 1.764 1.707 5 31 1.896 3.1 3.46 3 1.694 1.655 5 32 1.997 3.09 3.45 For 5% Significance Level, there is no Potential Outlier For 1% Significance Level, there is no Potential Outlier APPENDIX F PADuke Energy Carolinas\Statistics_CAMA\BTV Reports for CSAs\Belews Creek\DRAFT\Appendices\Appendix F - Outlier Test Results—Deep—BC Page 15 of 40 BELEWS CREEK STEAM STATION Rosner's Outlier Test for Cobalt Mean 0.442 Standard Deviation 0.554 Number of data 40 Number of suspected outliers 3 Potential Obs. Test Critical Critical # Mean sd outlier Number value value (5%) value (1%) 1 0.442 0.547 2 2 2.846 3.04 3.38 2 0.402 0.5 1.8 3 2.796 3.03 3.37 3 0.365 0.45 1.7 5 2.966 3.01 3.36 For 5% Significance Level, there is no Potential Outlier For 1% Significance Level, there is no Potential Outlier APPENDIX F PADuke Energy Carolinas\Statistics_CAMA\BTV Reports for CSAs\Belews Creek\DRAFT\Appendices\Appendix F - Outlier Test Results—Deep—BC Page 16 of 40 BELEWS CREEK STEAM STATION Rosner's Outlier Test for Copper Mean 1.643 Standard Deviation 2.147 Number of data 48 Number of suspected outliers 3 Potential Obs. Test Critical Critical # Mean sd outlier Number value value (5%) value (1%) 1 1.643 2.124 8.8 4 3.369 3.11 3.46 2 1.49 1.89 5 30 1.857 3.1 3.46 3 1.414 1.836 5 31 1.953 3.09 3.45 For 5% Significance Level, there is 1 Potential Outlier Potential outliers is: 8.8 For 1% Significance Level, there is no Potential Outlier APPENDIX F P:\Duke Energy Carolinas\Statistics_CAMA\BTV Reports for CSAs\Belews Creek\DRAFT\Appendices\Appendix F - Outlier Test Results—Deep—BC Page 17 of 40 BELEWS CREEK STEAM STATION Rosner's Outlier Test for Iron Mean 128 Standard Deviation 289.4 Number of data 48 Number of suspected outliers 3 Potential Obs. Test Critical Critical # Mean sd outlier Number value value (5%) value (1%) 1 128 286.3 1900 20 6.189 3.11 3.46 2 90.32 125.8 850 30 6.037 3.1 3.46 3 73.8 55.55 253 46 3.226 3.09 3.45 For 5% significance level, there are 3 Potential Outliers Potential outliers are: 1900, 850, 253 For 1% Significance Level, there are 2 Potential Outliers Potential outliers are: 1900, 850 APPENDIX F P:1Duke Energy Carolinas\Statistics_CAMAIBTV Reports for CSAslBelews CreekORAFT1AppendiceslAppendix F - Outlier Test Results—Deep—BC Page 18 of 40 BELEWS CREEK STEAM STATION Rosner's Outlier Test for Lead Mean 0.338 Standard Deviation 0.413 Number of data 48 Number of suspected outliers 3 Potential Obs. Test Critical Critical # Mean sd outlier Number value value (5%) value (1%) 1 0.338 0.409 1.5 20 2.841 3.11 3.46 2 0.313 0.38 1.11 30 2.095 3.1 3.46 3 0.296 0.365 1 31 1.927 3.09 3.45 For 5% Significance Level, there is no Potential Outlier For 1% Significance Level, there is no Potential Outlier APPENDIX F PADuke Energy Carolinas\Statistics_CAMA\BTV Reports for CSAs\Belews Creek\DRAFT\Appendices\Appendix F - Outlier Test Results—Deep—BC Page 19 of 40 BELEWS CREEK STEAM STATION Rosner's Outlier Test for Magnesium Mean 2971 Standard Deviation 1957 Number of data 46 Number of suspected outliers 3 Potential Obs. Test Critical Critical # Mean sd outlier Number value value (5%) value (1%) 1 2971 1936 7080 17 2.123 3.09 3.45 2 2879 1878 7040 16 2.216 3.09 3.44 3 2785 1788 7030 14 2.375 3.08 3.43 For 5% Significance Level, there is no Potential Outlier For 1% Significance Level, there is no Potential Outlier APPENDIX F PADuke Energy Carolinas\Statistics_CAMA\BTV Reports for CSAs\Belews Creek\DRAFT\Appendices\Appendix F - Outlier Test Results—Deep—BC Page 20 of 40 BELEWS CREEK STEAM STATION Rosner's Outlier Test for Manganese Mean 14.71 Standard Deviation 21.8 Number of data 48 Number of suspected outliers 3 Potential Obs. Test Critical Critical # Mean sd outlier Number value value (5%) value (1%) 1 14.71 21.57 93 1 3.629 3.11 3.46 2 13.05 18.7 73 2 3.207 3.1 3.46 3 11.74 16.6 70 20 3.509 3.09 3.45 For 5% significance level, there are 3 Potential Outliers Potential outliers are: 93, 73, 70 For 1% Significance Level, there are 3 Potential Outliers Potential outliers are: 93, 73, 70 APPENDIX F P:1Duke Energy Carolinas\Statistics_CAMAIBTV Reports for CSAslBelews CreekORAFT1AppendiceslAppendix F - Outlier Test Results—Deep—BC Page 21 of 40 BELEWS CREEK STEAM STATION Rosner's Outlier Test for Mercury Mean 0.166 Standard Deviation 0.063 Number of data 48 Number of suspected outliers 3 Potential Obs. Test Critical Critical # Mean sd outlier Number value value (5%) value (1%) 1 0.166 0.0623 0.05 30 1.861 3.11 3.46 2 0.169 0.0613 0.05 31 1.934 3.1 3.46 3 0.171 0.0593 0.05 32 2.041 3.09 3.45 For 5% Significance Level, there is no Potential Outlier For 1% Significance Level, there is no Potential Outlier APPENDIX F PADuke Energy Carolinas\Statistics_CAMA\BTV Reports for CSAs\Belews Creek\DRAFT\Appendices\Appendix F - Outlier Test Results—Deep—BC Page 22 of 40 BELEWS CREEK STEAM STATION Rosner's Outlier Test for Methane Mean 6.455 Standard Deviation 5.103 Number of data 38 Number of suspected outliers 3 Potential Obs. Test Critical Critical # Mean sd outlier Number value value (5%) value (1%) 1 6.455 5.036 24.3 1 3.544 3.01 3.36 2 5.973 4.205 1.1 21 1.159 3 3.34 3 6.108 4.182 1.1 32 1.198 2.99 3.33 For 5% Significance Level, there is 1 Potential Outlier Potential outliers is: 24.3 For 1% Significance Level, there is 1 Potential Outlier Potential outliers is: 24.3 APPENDIX F P:\Duke Energy Carolinas\Statistics_CAMA\BTV Reports for CSAs\Belews Creek\DRAFT\Appendices\Appendix F - Outlier Test Results—Deep—BC Page 23 of 40 BELEWS CREEK STEAM STATION Rosner's Outlier Test for Molybdenum Mean 0.501 Standard Deviation 0.306 Number of data 40 Number of suspected outliers 3 Potential Obs. Test Critical Critical # Mean sd outlier Number value value (5%) value (1%) 1 0.501 0.303 1.4 10 2.973 3.04 3.38 2 0.478 0.273 1.1 1 2.28 3.03 3.37 3 0.461 0.256 1 4 2.101 3.01 3.36 For 5% Significance Level, there is no Potential Outlier For 1% Significance Level, there is no Potential Outlier APPENDIX F PADuke Energy Carolinas\Statistics_CAMA\BTV Reports for CSAs\Belews Creek\DRAFT\Appendices\Appendix F - Outlier Test Results—Deep—BC Page 24 of 40 BELEWS CREEK STEAM STATION Rosner's Outlier Test for Nickel Mean 2.431 Standard Deviation 1.899 Number of data 48 Number of suspected outliers 3 Potential Obs. Test Critical Critical # Mean sd outlier Number value value (5%) value (1%) 1 2.431 1.879 5.6 5 1.687 3.11 3.46 2 2.363 1.86 5.4 3 1.632 3.1 3.46 3 2.297 1.825 5 30 1.481 3.09 3.45 For 5% Significance Level, there is no Potential Outlier For 1% Significance Level, there is no Potential Outlier APPENDIX F PADuke Energy Carolinas\Statistics_CAMA\BTV Reports for CSAs\Belews Creek\DRAFT\Appendices\Appendix F - Outlier Test Results—Deep—BC Page 25 of 40 BELEWS CREEK STEAM STATION Rosner's Outlier Test for Nitrate Nitrite Mean 960.6 Standard Deviation 779.7 Number of data 38 Number of suspected outliers 3 Potential Obs. Test Critical Critical # Mean sd outlier Number value value (5%) value (1%) 1 960.6 769.4 2800 24 2.391 3.01 3.36 2 910.9 726.9 2400 23 2.049 3 3.34 3 869.6 691.6 2100 21 1.779 2.99 3.33 For 5% Significance Level, there is no Potential Outlier For 1% Significance Level, there is no Potential Outlier APPENDIX F PADuke Energy Carolinas\Statistics_CAMA\BTV Reports for CSAs\Belews Creek\DRAFT\Appendices\Appendix F - Outlier Test Results—Deep—BC Page 26 of 40 BELEWS CREEK STEAM STATION Rosner's Outlier Test for Potassium Mean 5095 Standard Deviation 4093 Number of data 46 Number of suspected outliers 3 Potential Obs. Test Critical Critical # Mean sd outlier Number value value (5%) value (1%) 1 5095 4048 24300 9 4.745 3.09 3.45 2 4668 2926 17900 8 4.522 3.09 3.44 3 4368 2144 13300 7 4.167 3.08 3.43 For 5% significance level, there are 3 Potential Outliers Potential outliers are: 24300, 17900, 13300 For 1% Significance Level, there are 3 Potential Outliers Potential outliers are: 24300, 17900, 13300 APPENDIX F P:\Duke Energy Carolinas\Statistics_CAMA\BTV Reports for CSAs\Belews Creek\DRAFT\Appendices\Appendix F - Outlier Test Results—Deep—BC Page 27 of 40 BELEWS CREEK STEAM STATION Rosner's Outlier Test for Selenium Mean 0.589 Standard Deviation 0.221 Number of data 48 Number of suspected outliers 3 Potential Obs. Test Critical Critical # Mean sd outlier Number value value (5%) value (1%) 1 0.589 0.219 1 30 1.877 3.11 3.46 2 0.58 0.215 1 31 1.951 3.1 3.46 3 0.571 0.208 1 32 2.061 3.09 3.45 For 5% Significance Level, there is no Potential Outlier For 1% Significance Level, there is no Potential Outlier APPENDIX F PADuke Energy Carolinas\Statistics_CAMA\BTV Reports for CSAs\Belews Creek\DRAFT\Appendices\Appendix F - Outlier Test Results—Deep—BC Page 28 of 40 BELEWS CREEK STEAM STATION Rosner's Outlier Test for Sodium Mean 7814 Standard Deviation 1590 Number of data 46 Number of suspected outliers 3 Potential Obs. Test Critical Critical # Mean sd outlier Number value value (5%) value (1%) 1 7814 1573 14400 20 4.188 3.09 3.45 2 7668 1256 12000 9 3.449 3.09 3.44 3 7569 1081 11500 1 3.637 3.08 3.43 For 5% significance level, there are 3 Potential Outliers Potential outliers are: 14400, 12000, 11500 For 1% Significance Level, there are 3 Potential Outliers Potential outliers are: 14400, 12000, 11500 APPENDIX F PADuke Energy Carolinas\Statistics_CAMAIBTV Reports for CSAslBelews Creek0RAFT1AppendiceslAppendix F - Outlier Test Results—Deep—BC Page 29 of 40 BELEWS CREEK STEAM STATION Rosner's Outlier Test for Strontium Mean 43.48 Standard Deviation 9.324 Number of data 39 Number of suspected outliers 3 Potential Obs. Test Critical Critical # Mean sd outlier Number value value (5%) value (1%) 1 43.48 9.204 71.4 9 3.034 3.03 3.37 2 42.74 8.226 70 20 3.314 3.01 3.36 3 42.01 6.953 58.8 7 2.415 3 3.34 For 5% significance level, there are 2 Potential Outliers Potential outliers are: 71.4, 70 For 1% Significance Level, there is no Potential Outlier APPENDIX F PADuke Energy Carolinas\Statistics_CAMAIBTV Reports for CSAslBelews Creek0RAFT1AppendiceslAppendix F - Outlier Test Results—Deep—BC Page 30 of 40 BELEWS CREEK STEAM STATION Rosner's Outlier Test for Sulfate Mean 2470 Standard Deviation 2252 Number of data 48 Number of suspected outliers 3 Potential Obs. Test Critical Critical # Mean sd outlier Number value value (5%) value (1%) 1 2470 2228 11000 9 3.828 3.11 3.46 2 2288 1888 10500 1 4.349 3.1 3.46 3 2110 1454 6300 8 2.882 3.09 3.45 For 5% significance level, there are 2 Potential Outliers Potential outliers are: 11000, 10500 For 1% Significance Level, there are 2 Potential Outliers Potential outliers are: 11000, 10500 APPENDIX F P:\Duke Energy Carolinas\Statistics_CAMA\BTV Reports for CSAs\Belews Creek\DRAFT\Appendices\Appendix F - Outlier Test Results—Deep—BC Page 31 of 40 BELEWS CREEK STEAM STATION Rosner's Outlier Test for Sulfide Mean 89.48 Standard Deviation 31.07 Number of data 38 Number of suspected outliers 3 Potential Obs. Test Critical Critical # Mean sd outlier Number value value (5%) value (1%) 1 89.48 30.66 0.1 6 2.915 3.01 3.36 2 91.9 27.64 0.1 15 3.321 3 3.34 3 94.45 23.21 0.1 25 4.065 2.99 3.33 For 5% significance level, there are 3 Potential Outliers Potential outliers are: 0.1, 0.1, 0.1 For 1% Significance Level, there are 3 Potential Outliers Potential outliers are: 0.1, 0.1, 0.1 APPENDIX F PADuke Energy Carolinas\Statistics_CAMAIBTV Reports for CSAslBelews CreekORAFT1AppendiceslAppendix F - Outlier Test Results—Deep—BC Page 32 of 40 BELEWS CREEK STEAM STATION Rosner's Outlier Test for TDS Mean 74506 Standard Deviation 33620 Number of data 48 Number of suspected outliers 3 Potential Obs. Test Critical Critical # Mean sd outlier Number value value (5%) value (1%) 1 74506 33268 173000 20 2.961 3.11 3.46 2 72411 30651 48 6 2.361 3.1 3.46 3 73984 29009 65.3 25 2.548 3.09 3.45 For 5% Significance Level, there is no Potential Outlier For 1% Significance Level, there is no Potential Outlier APPENDIX F PADuke Energy Carolinas\Statistics_CAMA\BTV Reports for CSAs\Belews Creek\DRAFT\Appendices\Appendix F - Outlier Test Results—Deep—BC Page 33 of 40 BELEWS CREEK STEAM STATION Rosner's Outlier Test for Thallium Mean 0.11 Standard Deviation 0.0522 Number of data 48 Number of suspected outliers 3 Potential Obs. Test Critical Critical # Mean sd outlier Number value value (5%) value (1%) 1 0.11 0.0517 0.2 30 1.742 3.11 3.46 2 0.108 0.0511 0.2 31 1.801 3.1 3.46 3 0.106 0.0498 0.2 32 1.889 3.09 3.45 For 5% Significance Level, there is no Potential Outlier For 1% Significance Level, there is no Potential Outlier Dixon's Outlier Test for TOC Number of Observations = 22 10% critical value: 0.382 5% critical value: 0.43 1% critical value: 0.514 1. Observation Value 10900 is a Potential Outlier (Upper Tail)? Test Statistic: 1.000 For 10% significance level, 10900 is an outlier. For 5% significance level, 10900 is an outlier. For 1% significance level, 10900 is an outlier. 2. Observation Value 660 is a Potential Outlier (Lower Tail)? Test Statistic: 1.000 For 10% significance level, 660 is an outlier. For 5% significance level, 660 is an outlier. For 1% significance level, 660 is an outlier. APPENDIX F P:\Duke Energy Carolinas\Statistics_CAMA\BTV Reports for CSAs\Belews Creek\DRAFT\Appendices\Appendix F - Outlier Test Results—Deep—BC Page 34 of 40 BELEWS CREEK STEAM STATION Rosner's Outlier Test for Vanadium Mean 0.68 Standard Deviation 0.362 Number of data 39 Number of suspected outliers 3 Potential Obs. Test Critical Critical # Mean sd outlier Number value value (5%) value (1%) 1 0.68 0.357 1.4 10 2.017 3.03 3.37 2 0.661 0.346 0.093 9 1.641 3.01 3.36 3 0.677 0.338 0.094 5 1.725 3 3.34 For 5% Significance Level, there is no Potential Outlier For 1% Significance Level, there is no Potential Outlier APPENDIX F PADuke Energy Carolinas\Statistics_CAMA\BTV Reports for CSAs\Belews Creek\DRAFT\Appendices\Appendix F - Outlier Test Results—Deep—BC Page 35 of 40 BELEWS CREEK STEAM STATION Rosner's Outlier Test for Zinc Mean 12.62 Standard Deviation 12.63 Number of data 48 Number of suspected outliers 3 Potential Obs. Test Critical Critical # Mean sd outlier Number value value (5%) value (1%) 1 12.62 12.49 62 4 3.952 3.11 3.46 2 11.57 10.43 48.8 5 3.57 3.1 3.46 3 10.76 8.927 46.2 8 3.97 3.09 3.45 For 5% significance level, there are 3 Potential Outliers Potential outliers are: 62, 48.8, 46.2 For 1% Significance Level, there are 3 Potential Outliers Potential outliers are: 62, 48.8, 46.2 Dixon's Outlier Test for Radium Number of Observations = 23 10% critical value: 0.374 5% critical value: 0.421 1% critical value: 0.505 1. Observation Value 7.63 is a Potential Outlier (Upper Tail)? Test Statistic: 0.891 For 10% significance level, 7.63 is an outlier. For 5% significance level, 7.63 is an outlier. For 1% significance level, 7.63 is an outlier. 2. Observation Value -0.025 is a Potential Outlier (Lower Tail)? Test Statistic: 0.121 For 10% significance level, -0.025 is not an outlier. For 5% significance level, -0.025 is not an outlier. For 1% significance level, -0.025 is not an outlier. APPENDIX F P:\Duke Energy Carolinas\Statistics_CAMA\BTV Reports for CSAs\Belews Creek\DRAFT\Appendices\Appendix F - Outlier Test Results—Deep—BC Page 36 of 40 BELEWS CREEK STEAM STATION Mean Standard Deviation Number of data Number of suspected outliers Rosner's Outlier Test for Uranium 0.416 0.162 25 3 Potential Obs. # Mean sd outlier Number 1 0.416 0.159 0.064 2 0.431 0.148 0.067 3 0.446 0.128 0.083 For 5% significance level, there are 3 Potential Outliers Potential outliers are: 0.064, 0.067, 0.083 For 1% Significance Level, there is no Potential Outlier Test Critical Critical value value (5%) value (1%) 10 2.217 2.82 3.14 7 2.464 2.8 3.11 12 2.829 2.78 3.09 APPENDIX F P:\Duke Energy Carolinas\Statistics_CAMA\BTV Reports for CSAs\Belews Creek\DRAFT\Appendices\Appendix F - Outlier Test Results—Deep—BC Page 37 of 40 BELEWS CREEK STEAM STATION Outlier Tests for Selected Uncensored Variables User Selected Options Date/Time of Computation ProUCL 5.17/13/2017 3:13:20 PM From File Belews_BG TZ GW Data—May 2017—for ProUCL_NCSS.xls Full Precision OFF APPENDIX F P:\Duke Energy Carolinas\Statistics_CAMA\BTV Reports for CSAs\Belews Creek\DRAFT\Appendices\Appendix F - Outlier Test Results—Deep—BC Page 38 of 40 BELEWS CREEK STEAM STATION Dixon's Outlier Test for TOC Number of Observations = 21 10% critical value: 0.391 5% critical value: 0.44 1% critical value: 0.524 1. Observation Value 7800 is a Potential Outlier (Upper Tail)? Test Statistic: 1.000 For 10% significance level, 7800 is an outlier. For 5% significance level, 7800 is an outlier. For 1% significance level, 7800 is an outlier. 2. Observation Value 660 is a Potential Outlier (Lower Tail)? Test Statistic: 1.000 For 10% significance level, 660 is an outlier. For 5% significance level, 660 is an outlier. For 1% significance level, 660 is an outlier. APPENDIX F P:\Duke Energy Carolinas\Statistics_CAMA\BTV Reports for CSAs\Belews Creek\DRAFT\Appendices\Appendix F - Outlier Test Results—Deep—BC Page 39 of 40 BELEWS CREEK STEAM STATION Dixon's Outlier Test for Radium Number of Observations = 22 10% critical value: 0.382 5% critical value: 0.43 1% critical value: 0.514 1. Observation Value 6.56 is a Potential Outlier (Upper Tail)? Test Statistic: 0.874 For 10% significance level, 6.56 is an outlier. For 5% significance level, 6.56 is an outlier. For 1% significance level, 6.56 is an outlier. 2. Observation Value -0.025 is a Potential Outlier (Lower Tail)? Test Statistic: 0.122 For 10% significance level, -0.025 is not an outlier. For 5% significance level, -0.025 is not an outlier. For 1% significance level, -0.025 is not an outlier. APPENDIX F P:\Duke Energy Carolinas\Statistics_CAMA\BTV Reports for CSAs\Belews Creek\DRAFT\Appendices\Appendix F - Outlier Test Results—Deep—BC Page 40 of 40 Proposed Background Threshold Values For Naturally Occurring Concentrations in Groundwater and Soil October 2017 Belews Creek Steam Station APPENDIX G OUTLIER TEST RESULTS - BEDROCK SynTerra P:\Duke Energy Carolinas\Statistics—CAMA\BTV Reports for CSAs\Belews Creek\DRAFT\Belews Creek_BTV Report Text_CSA2_FINAL. docx BELEWS CREEK STEAM STATION Outlier Tests for Selected Uncensored Variables User Selected Options Date/Time of Computation ProUCL 5.17/13/2017 4:20:49 PM From File Belews_BG BR GW Data -May 2017 -for ProUCL_NCSS.xls Full Precision OFF P:1Duke Energy Carol inas\Statistics_CAMAIBTV Reports for CSAs\Belews Creek\DRAFT1Appendices\ Appendix G - Outlier Test Results -Bedrock -BC APPENDIX G Page 1 of 50 BELEWS CREEK STEAM STATION Dixon's Outlier Test for pH Number of Observations = 11 10% critical value: 0.517 5% critical value: 0.576 1% critical value: 0.679 1. Observation Value 7.6 is a Potential Outlier (Upper Tail)? Test Statistic: 0.769 For 10% significance level, 7.6 is an outlier. For 5% significance level, 7.6 is an outlier. For 1% significance level, 7.6 is an outlier. 2. Observation Value 6.3 is a Potential Outlier (Lower Tail)? Test Statistic: 0.000 For 10% significance level, 6.3 is not an outlier. For 5% significance level, 6.3 is not an outlier. For 1% significance level, 6.3 is not an outlier. P:1Duke Energy Carol inas\Statistics_CAMAIBTV Reports for CSAs\Belews C reek\D RAFT\Append ices\ Appendix G - Outlier Test Results -Bedrock -BC APPENDIX G Page 2 of 50 BELEWS CREEK STEAM STATION Dixon's Outlier Test for Alkalinity Number of Observations = 11 10% critical value: 0.517 5% critical value: 0.576 1% critical value: 0.679 1. Observation Value 81300 is a Potential Outlier (Upper Tail)? Test Statistic: 0.580 For 10% significance level, 81300 is an outlier. For 5% significance level, 81300 is an outlier. For 1% significance level, 81300 is not an outlier. 2. Observation Value 32200 is a Potential Outlier (Lower Tail)? Test Statistic: 0.037 For 10% significance level, 32200 is not an outlier. For 5% significance level, 32200 is not an outlier. For 1% significance level, 32200 is not an outlier. P:1Duke Energy Carol inas\Statistics_CAMAIBTV Reports for CSAs\Belews C reek\D RAFT\Append ices\ Appendix G - Outlier Test Results -Bedrock -BC APPENDIX G Page 3 of 50 BELEWS CREEK STEAM STATION Dixon's Outlier Test for Aluminum Number of Observations = 11 10% critical value: 0.517 5% critical value: 0.576 1% critical value: 0.679 1. Observation Value 170 is a Potential Outlier (Upper Tail)? Test Statistic: 0.778 For 10% significance level, 170 is an outlier. For 5% significance level, 170 is an outlier. For 1% significance level, 170 is an outlier. 2. Observation Value 53.2 is a Potential Outlier (Lower Tail)? Test Statistic: 0.400 For 10% significance level, 53.2 is not an outlier. For 5% significance level, 53.2 is not an outlier. For 1% significance level, 53.2 is not an outlier. P:1Duke Energy Carol inas\Statistics_CAMAIBTV Reports for CSAs\Belews C reek\D RAFT\Append ices\ Appendix G - Outlier Test Results -Bedrock -BC APPENDIX G Page 4 of 50 BELEWS CREEK STEAM STATION Dixon's Outlier Test for Antimony Number of Observations = 11 10% critical value: 0.517 5% critical value: 0.576 1% critical value: 0.679 1. Observation Value 0.5 is a Potential Outlier (Upper Tail)? Test Statistic: 0.000 For 10% significance level, 0.5 is not an outlier. For 5% significance level, 0.5 is not an outlier. For 1% significance level, 0.5 is not an outlier. 2. Observation Value 0.18 is a Potential Outlier (Lower Tail)? Test Statistic: 0.063 For 10% significance level, 0.18 is not an outlier. For 5% significance level, 0.18 is not an outlier. For 1% significance level, 0.18 is not an outlier. P:1Duke Energy Carol inas\Statistics_CAMAIBTV Reports for CSAs\Belews C reek\D RAFT\Append ices\ Appendix G - Outlier Test Results -Bedrock -BC APPENDIX G Page 5 of 50 BELEWS CREEK STEAM STATION Dixon's Outlier Test for Arsenic Number of Observations = 11 10% critical value: 0.517 5% critical value: 0.576 1% critical value: 0.679 1. Observation Value 0.65 is a Potential Outlier (Upper Tail)? Test Statistic: 0.511 For 10% significance level, 0.65 is not an outlier. For 5% significance level, 0.65 is not an outlier. For 1% significance level, 0.65 is not an outlier. 2. Observation Value 0.16 is a Potential Outlier (Lower Tail)? Test Statistic: 0.171 For 10% significance level, 0.16 is not an outlier. For 5% significance level, 0.16 is not an outlier. For 1% significance level, 0.16 is not an outlier. P:1Duke Energy Carol inas\Statistics_CAMAIBTV Reports for CSAs\Belews C reek\D RAFT\Append ices\ Appendix G - Outlier Test Results -Bedrock -BC APPENDIX G Page 6 of 50 BELEWS CREEK STEAM STATION Dixon's Outlier Test for Barium Number of Observations = 11 10% critical value: 0.517 5% critical value: 0.576 1% critical value: 0.679 1. Observation Value it is a Potential Outlier (Upper Tail)? Test Statistic: 0.699 For 10% significance level, 11 is an outlier. For 5% significance level, 11 is an outlier. For 1% significance level, 11 is an outlier. 2. Observation Value 3 is a Potential Outlier (Lower Tail)? Test Statistic: 0.281 For 10% significance level, 3 is not an outlier. For 5% significance level, 3 is not an outlier. For 1% significance level, 3 is not an outlier. P:1Duke Energy Carol inas\Statistics_CAMAIBTV Reports for CSAs\Belews C reek\D RAFT\Append ices\ Appendix G - Outlier Test Results -Bedrock -BC APPENDIX G Page 7 of 50 BELEWS CREEK STEAM STATION Dixon's Outlier Test for Beryllium Number of Observations = 11 10% critical value: 0.517 5% critical value: 0.576 1% critical value: 0.679 1. Observation Value 0.2 is a Potential Outlier (Upper Tail)? Test Statistic: 0.113 For 10% significance level, 0.2 is not an outlier. For 5% significance level, 0.2 is not an outlier. For 1% significance level, 0.2 is not an outlier. 2. Observation Value 0.023 is a Potential Outlier (Lower Tail)? Test Statistic: 0.068 For 10% significance level, 0.023 is not an outlier. For 5% significance level, 0.023 is not an outlier. For 1% significance level, 0.023 is not an outlier. P:1Duke Energy Carol inas\Statistics_CAMAIBTV Reports for CSAs\Belews C reek\D RAFT\Append ices\ Appendix G - Outlier Test Results -Bedrock -BC APPENDIX G Page 8 of 50 BELEWS CREEK STEAM STATION Dixon's Outlier Test for Bicarbonate Number of Observations = 11 10% critical value: 0.517 5% critical value: 0.576 1% critical value: 0.679 1. Observation Value 77600 is a Potential Outlier (Upper Tail)? Test Statistic: 0.406 For 10% significance level, 77600 is not an outlier. For 5% significance level, 77600 is not an outlier. For 1% significance level, 77600 is not an outlier. 2. Observation Value 5000 is a Potential Outlier (Lower Tail)? Test Statistic: 0.565 For 10% significance level, 5000 is an outlier. For 5% significance level, 5000 is not an outlier. For 1% significance level, 5000 is not an outlier. P:1Duke Energy Carol inas\Statistics_CAMAIBTV Reports for CSAs\Belews C reek\D RAFT\Append ices\ Appendix G - Outlier Test Results -Bedrock -BC APPENDIX G Page 9 of 50 BELEWS CREEK STEAM STATION Dixon's Outlier Test for Boron Number of Observations = 11 10% critical value: 0.517 5% critical value: 0.576 1% critical value: 0.679 1. Observation Value 50 is a Potential Outlier (Upper Tail)? Test Statistic: NaN For 10% significance level, 50 is an outlier. For 5% significance level, 50 is an outlier. For 1% significance level, 50 is an outlier. 2. Observation Value 37 is a Potential Outlier (Lower Tail)? Test Statistic: 1.000 For 10% significance level, 37 is an outlier. For 5% significance level, 37 is an outlier. For 1% significance level, 37 is an outlier. P:1Duke Energy Carol inas\Statistics_CAMAIBTV Reports for CSAs\Belews Creek\DRAFT1Appendices\ Appendix G - Outlier Test Results -Bedrock -BC APPENDIX G Page 10 of 50 BELEWS CREEK STEAM STATION Dixon's Outlier Test for Cadmium Number of Observations = 11 10% critical value: 0.517 5% critical value: 0.576 1% critical value: 0.679 1. Observation Value 0.08 is a Potential Outlier (Upper Tail)? Test Statistic: 0.000 For 10% significance level, 0.08 is not an outlier. For 5% significance level, 0.08 is not an outlier. For 1% significance level, 0.08 is not an outlier. 2. Observation Value 0.033 is a Potential Outlier (Lower Tail)? Test Statistic: 1.000 For 10% significance level, 0.033 is an outlier. For 5% significance level, 0.033 is an outlier. For 1% significance level, 0.033 is an outlier. P:1Duke Energy Carol inas\Statistics_CAMAIBTV Reports for CSAs\Belews Creek\DRAFT1Appendices\ Appendix G - Outlier Test Results -Bedrock -BC APPENDIX G Page 11 of 50 BELEWS CREEK STEAM STATION Dixon's Outlier Test for Calcium Number of Observations = 11 10% critical value: 0.517 5% critical value: 0.576 1% critical value: 0.679 1. Observation Value 25700 is a Potential Outlier (Upper Tail)? Test Statistic: 0.752 For 10% significance level, 25700 is an outlier. For 5% significance level, 25700 is an outlier. For 1% significance level, 25700 is an outlier. 2. Observation Value 1680 is a Potential Outlier (Lower Tail)? Test Statistic: 0.218 For 10% significance level, 1680 is not an outlier. For 5% significance level, 1680 is not an outlier. For 1% significance level, 1680 is not an outlier. P:1Duke Energy Carol inas\Statistics_CAMAIBTV Reports for CSAs\Belews Creek\DRAFT1Appendices\ Appendix G - Outlier Test Results -Bedrock -BC APPENDIX G Page 12 of 50 BELEWS CREEK STEAM STATION Dixon's Outlier Test for Carbonate Number of Observations = 11 10% critical value: 0.517 5% critical value: 0.576 1% critical value: 0.679 1. Observation Value 5000 is a Potential Outlier (Upper Tail)? Test Statistic: NaN For 10% significance level, 5000 is an outlier. For 5% significance level, 5000 is an outlier. For 1% significance level, 5000 is an outlier. 2. Observation Value 5000 is a Potential Outlier (Lower Tail)? Test Statistic: NaN For 10% significance level, 5000 is an outlier. For 5% significance level, 5000 is an outlier. For 1% significance level, 5000 is an outlier. P:1Duke Energy Carol inas\Statistics_CAMAIBTV Reports for CSAs\Belews Creek\DRAFT1Appendices\ Appendix G - Outlier Test Results -Bedrock -BC APPENDIX G Page 13 of 50 BELEWS CREEK STEAM STATION Dixon's Outlier Test for Chloride Number of Observations = 11 10% critical value: 0.517 5% critical value: 0.576 1% critical value: 0.679 1. Observation Value 3000 is a Potential Outlier (Upper Tail)? Test Statistic: 0.167 For 10% significance level, 3000 is not an outlier. For 5% significance level, 3000 is not an outlier. For 1% significance level, 3000 is not an outlier. 2. Observation Value 2.6 is a Potential Outlier (Lower Tail)? Test Statistic: 0.833 For 10% significance level, 2.6 is an outlier. For 5% significance level, 2.6 is an outlier. For 1% significance level, 2.6 is an outlier. P:1Duke Energy Carol inas\Statistics_CAMAIBTV Reports for CSAs\Belews Creek\DRAFT1Appendices\ Appendix G - Outlier Test Results -Bedrock -BC APPENDIX G Page 14 of 50 BELEWS CREEK STEAM STATION Dixon's Outlier Test for Chromium VI Number of Observations = 9 10% critical value: 0.441 5% critical value: 0.512 1% critical value: 0.635 1. Observation Value 0.33 is a Potential Outlier (Upper Tail)? Test Statistic: 0.396 For 10% significance level, 0.33 is not an outlier. For 5% significance level, 0.33 is not an outlier. For 1% significance level, 0.33 is not an outlier. 2. Observation Value 0.03 is a Potential Outlier (Lower Tail)? Test Statistic: 0.116 For 10% significance level, 0.03 is not an outlier. For 5% significance level, 0.03 is not an outlier. For 1% significance level, 0.03 is not an outlier. P:1Duke Energy Carol inas\Statistics_CAMAIBTV Reports for CSAs\Belews Creek\DRAFT1Appendices\ Appendix G - Outlier Test Results -Bedrock -BC APPENDIX G Page 15 of 50 BELEWS CREEK STEAM STATION Dixon's Outlier Test for Chromium Number of Observations = 11 10% critical value: 0.517 5% critical value: 0.576 1% critical value: 0.679 1. Observation Value 54.7 is a Potential Outlier (Upper Tail)? Test Statistic: 0.887 For 10% significance level, 54.7 is an outlier. For 5% significance level, 54.7 is an outlier. For 1% significance level, 54.7 is an outlier. 2. Observation Value 0.89 is a Potential Outlier (Lower Tail)? Test Statistic: 0.003 For 10% significance level, 0.89 is not an outlier. For 5% significance level, 0.89 is not an outlier. For 1% significance level, 0.89 is not an outlier. P:1Duke Energy Carol inas\Statistics_CAMAIBTV Reports for CSAs\Belews Creek\DRAFT1Appendices\ Appendix G - Outlier Test Results -Bedrock -BC APPENDIX G Page 16 of 50 BELEWS CREEK STEAM STATION Dixon's Outlier Test for Cobalt Number of Observations = 11 10% critical value: 0.517 5% critical value: 0.576 1% critical value: 0.679 1. Observation Value 0.76 is a Potential Outlier (Upper Tail)? Test Statistic: 0.363 For 10% significance level, 0.76 is not an outlier. For 5% significance level, 0.76 is not an outlier. For 1% significance level, 0.76 is not an outlier. 2. Observation Value 0.036 is a Potential Outlier (Lower Tail)? Test Statistic: 0.015 For 10% significance level, 0.036 is not an outlier. For 5% significance level, 0.036 is not an outlier. For 1% significance level, 0.036 is not an outlier. P:1Duke Energy Carol inas\Statistics_CAMAIBTV Reports for CSAs\Belews Creek\DRAFT1Appendices\ Appendix G - Outlier Test Results -Bedrock -BC APPENDIX G Page 17 of 50 BELEWS CREEK STEAM STATION Dixon's Outlier Test for Copper Number of Observations = 11 10% critical value: 0.517 5% critical value: 0.576 1% critical value: 0.679 1. Observation Value 9.7 is a Potential Outlier (Upper Tail)? Test Statistic: 0.354 For 10% significance level, 9.7 is not an outlier. For 5% significance level, 9.7 is not an outlier. For 1% significance level, 9.7 is not an outlier. 2. Observation Value 0.13 is a Potential Outlier (Lower Tail)? Test Statistic: 0.091 For 10% significance level, 0.13 is not an outlier. For 5% significance level, 0.13 is not an outlier. For 1% significance level, 0.13 is not an outlier. P:1Duke Energy Carol inas\Statistics_CAMAIBTV Reports for CSAs\Belews Creek\DRAFT1Appendices\ Appendix G - Outlier Test Results -Bedrock -BC APPENDIX G Page 18 of 50 BELEWS CREEK STEAM STATION Dixon's Outlier Test for Iron Number of Observations = 11 10% critical value: 0.517 5% critical value: 0.576 1% critical value: 0.679 1. Observation Value 450 is a Potential Outlier (Upper Tail)? Test Statistic: 0.525 For 10% significance level, 450 is an outlier. For 5% significance level, 450 is not an outlier. For 1% significance level, 450 is not an outlier. 2. Observation Value 27 is a Potential Outlier (Lower Tail)? Test Statistic: 0.008 For 10% significance level, 27 is not an outlier. For 5% significance level, 27 is not an outlier. For 1% significance level, 27 is not an outlier. P:1Duke Energy Carol inas\Statistics_CAMAIBTV Reports for CSAs\Belews Creek\DRAFT1Appendices\ Appendix G - Outlier Test Results -Bedrock -BC APPENDIX G Page 19 of 50 BELEWS CREEK STEAM STATION Dixon's Outlier Test for Lead Number of Observations = 11 10% critical value: 0.517 5% critical value: 0.576 1% critical value: 0.679 1. Observation Value 0.11 is a Potential Outlier (Upper Tail)? Test Statistic: 0.175 For 10% significance level, 0.11 is not an outlier. For 5% significance level, 0.11 is not an outlier. For 1% significance level, 0.11 is not an outlier. 2. Observation Value 0.052 is a Potential Outlier (Lower Tail)? Test Statistic: 0.333 For 10% significance level, 0.052 is not an outlier. For 5% significance level, 0.052 is not an outlier. For 1% significance level, 0.052 is not an outlier. P:1Duke Energy Carol inas\Statistics_CAMAIBTV Reports for CSAs\Belews C reek\D RAFT\Append ices\ Appendix G - Outlier Test Results -Bedrock -BC APPENDIX G Page 20 of 50 BELEWS CREEK STEAM STATION Dixon's Outlier Test for Magnesium Number of Observations = 11 10% critical value: 0.517 5% critical value: 0.576 1% critical value: 0.679 1. Observation Value 3350 is a Potential Outlier (Upper Tail)? Test Statistic: 0.169 For 10% significance level, 3350 is not an outlier. For 5% significance level, 3350 is not an outlier. For 1% significance level, 3350 is not an outlier. 2. Observation Value 602 is a Potential Outlier (Lower Tail)? Test Statistic: 0.489 For 10% significance level, 602 is not an outlier. For 5% significance level, 602 is not an outlier. For 1% significance level, 602 is not an outlier. P:1Duke Energy Carol inas\Statistics_CAMAIBTV Reports for CSAs\Belews Creek\DRAFT1Appendices\ Appendix G - Outlier Test Results -Bedrock -BC APPENDIX G Page 21 of 50 BELEWS CREEK STEAM STATION Dixon's Outlier Test for Manganese Number of Observations = 11 10% critical value: 0.517 5% critical value: 0.576 1% critical value: 0.679 1. Observation Value 87.1 is a Potential Outlier (Upper Tail)? Test Statistic: 0.835 For 10% significance level, 87.1 is an outlier. For 5% significance level, 87.1 is an outlier. For 1% significance level, 87.1 is an outlier. 2. Observation Value 2.5 is a Potential Outlier (Lower Tail)? Test Statistic: 0.115 For 10% significance level, 2.5 is not an outlier. For 5% significance level, 2.5 is not an outlier. For 1% significance level, 2.5 is not an outlier. P:1Duke Energy Carol inas\Statistics_CAMAIBTV Reports for CSAs\Belews C reek\D RAFT\Append ices\ Appendix G - Outlier Test Results -Bedrock -BC APPENDIX G Page 22 of 50 BELEWS CREEK STEAM STATION Dixon's Outlier Test for Mercury Number of Observations = 11 10% critical value: 0.517 5% critical value: 0.576 1% critical value: 0.679 1. Observation Value 0.2 is a Potential Outlier (Upper Tail)? Test Statistic: NaN For 10% significance level, 0.2 is an outlier. For 5% significance level, 0.2 is an outlier. For 1% significance level, 0.2 is an outlier. 2. Observation Value 0.2 is a Potential Outlier (Lower Tail)? Test Statistic: NaN For 10% significance level, 0.2 is an outlier. For 5% significance level, 0.2 is an outlier. For 1% significance level, 0.2 is an outlier. P:1Duke Energy Carol inas\Statistics_CAMAIBTV Reports for CSAs\Belews C reek\D RAFT\Append ices\ Appendix G - Outlier Test Results -Bedrock -BC APPENDIX G Page 23 of 50 BELEWS CREEK STEAM STATION Dixon's Outlier Test for Methane Number of Observations = 11 10% critical value: 0.517 5% critical value: 0.576 1% critical value: 0.679 1. Observation Value 10 is a Potential Outlier (Upper Tail)? Test Statistic: 0.000 For 10% significance level, 10 is not an outlier. For 5% significance level, 10 is not an outlier. For 1% significance level, 10 is not an outlier. 2. Observation Value 1.2 is a Potential Outlier (Lower Tail)? Test Statistic: 0.045 For 10% significance level, 1.2 is not an outlier. For 5% significance level, 1.2 is not an outlier. For 1% significance level, 1.2 is not an outlier. P:1Duke Energy Carol inas\Statistics_CAMAIBTV Reports for CSAs\Belews C reek\D RAFT\Append ices\ Appendix G - Outlier Test Results -Bedrock -BC APPENDIX G Page 24 of 50 BELEWS CREEK STEAM STATION Dixon's Outlier Test for Molybdenum Number of Observations = 11 10% critical value: 0.517 5% critical value: 0.576 1% critical value: 0.679 1. Observation Value 3.7 is a Potential Outlier (Upper Tail)? Test Statistic: 0.533 For 10% significance level, 3.7 is an outlier. For 5% significance level, 3.7 is not an outlier. For 1% significance level, 3.7 is not an outlier. 2. Observation Value 0.67 is a Potential Outlier (Lower Tail)? Test Statistic: 0.037 For 10% significance level, 0.67 is not an outlier. For 5% significance level, 0.67 is not an outlier. For 1% significance level, 0.67 is not an outlier. P:1Duke Energy Carol inas\Statistics_CAMAIBTV Reports for CSAs\Belews C reek\D RAFT\Append ices\ Appendix G - Outlier Test Results -Bedrock -BC APPENDIX G Page 25 of 50 BELEWS CREEK STEAM STATION Dixon's Outlier Test for Nickel Number of Observations = 11 10% critical value: 0.517 5% critical value: 0.576 1% critical value: 0.679 1. Observation Value 31 is a Potential Outlier (Upper Tail)? Test Statistic: 0.712 For 10% significance level, 31 is an outlier. For 5% significance level, 31 is an outlier. For 1% significance level, 31 is an outlier. 2. Observation Value 0.54 is a Potential Outlier (Lower Tail)? Test Statistic: 0.007 For 10% significance level, 0.54 is not an outlier. For 5% significance level, 0.54 is not an outlier. For 1% significance level, 0.54 is not an outlier. P:1Duke Energy Carol inas\Statistics_CAMAIBTV Reports for CSAs\Belews C reek\D RAFT\Append ices\ Appendix G - Outlier Test Results -Bedrock -BC APPENDIX G Page 26 of 50 BELEWS CREEK STEAM STATION Dixon's Outlier Test for Nitrate Nitrite Number of Observations = 11 10% critical value: 0.517 5% critical value: 0.576 1% critical value: 0.679 1. Observation Value 170 is a Potential Outlier (Upper Tail)? Test Statistic: 0.145 For 10% significance level, 170 is not an outlier. For 5% significance level, 170 is not an outlier. For 1% significance level, 170 is not an outlier. 2. Observation Value 0.06 is a Potential Outlier (Lower Tail)? Test Statistic: 0.750 For 10% significance level, 0.06 is an outlier. For 5% significance level, 0.06 is an outlier. For 1% significance level, 0.06 is an outlier. P:1Duke Energy Carol inas\Statistics_CAMAIBTV Reports for CSAs\Belews C reek\D RAFT\Append ices\ Appendix G - Outlier Test Results -Bedrock -BC APPENDIX G Page 27 of 50 BELEWS CREEK STEAM STATION Dixon's Outlier Test for Potassium Number of Observations = 11 10% critical value: 0.517 5% critical value: 0.576 1% critical value: 0.679 1. Observation Value 5150 is a Potential Outlier (Upper Tail)? Test Statistic: 0.061 For 10% significance level, 5150 is not an outlier. For 5% significance level, 5150 is not an outlier. For 1% significance level, 5150 is not an outlier. 2. Observation Value 2540 is a Potential Outlier (Lower Tail)? Test Statistic: 0.671 For 10% significance level, 2540 is an outlier. For 5% significance level, 2540 is an outlier. For 1% significance level, 2540 is not an outlier. P:1Duke Energy Carol inas\Statistics_CAMAIBTV Reports for CSAs\Belews C reek\D RAFT\Append ices\ Appendix G - Outlier Test Results -Bedrock -BC APPENDIX G Page 28 of 50 BELEWS CREEK STEAM STATION Dixon's Outlier Test for Selenium Number of Observations = 11 10% critical value: 0.517 5% critical value: 0.576 1% critical value: 0.679 1. Observation Value 0.5 is a Potential Outlier (Upper Tail)? Test Statistic: NaN For 10% significance level, 0.5 is an outlier. For 5% significance level, 0.5 is an outlier. For 1% significance level, 0.5 is an outlier. 2. Observation Value 0.44 is a Potential Outlier (Lower Tail)? Test Statistic: 1.000 For 10% significance level, 0.44 is an outlier. For 5% significance level, 0.44 is an outlier. For 1% significance level, 0.44 is an outlier. P:1Duke Energy Carol inas\Statistics_CAMAIBTV Reports for CSAs\Belews C reek\D RAFT\Append ices\ Appendix G - Outlier Test Results -Bedrock -BC APPENDIX G Page 29 of 50 BELEWS CREEK STEAM STATION Dixon's Outlier Test for Sodium Number of Observations = 11 10% critical value: 0.517 5% critical value: 0.576 1% critical value: 0.679 1. Observation Value 12000 is a Potential Outlier (Upper Tail)? Test Statistic: 0.565 For 10% significance level, 12000 is an outlier. For 5% significance level, 12000 is not an outlier. For 1% significance level, 12000 is not an outlier. 2. Observation Value 3590 is a Potential Outlier (Lower Tail)? Test Statistic: 0.752 For 10% significance level, 3590 is an outlier. For 5% significance level, 3590 is an outlier. For 1% significance level, 3590 is an outlier. P:1Duke Energy Carol inas\Statistics_CAMAIBTV Reports for CSAs\Belews C reek\D RAFT\Append ices\ Appendix G - Outlier Test Results -Bedrock -BC APPENDIX G Page 30 of 50 BELEWS CREEK STEAM STATION Dixon's Outlier Test for Strontium Number of Observations = 11 10% critical value: 0.517 5% critical value: 0.576 1% critical value: 0.679 1. Observation Value 100 is a Potential Outlier (Upper Tail)? Test Statistic: 0.542 For 10% significance level, 100 is an outlier. For 5% significance level, 100 is not an outlier. For 1% significance level, 100 is not an outlier. 2. Observation Value 35.1 is a Potential Outlier (Lower Tail)? Test Statistic: 0.037 For 10% significance level, 35.1 is not an outlier. For 5% significance level, 35.1 is not an outlier. For 1% significance level, 35.1 is not an outlier. P:1Duke Energy Carol inas\Statistics_CAMAIBTV Reports for CSAs\Belews Creek\DRAFT1Appendices\ Appendix G - Outlier Test Results -Bedrock -BC APPENDIX G Page 31 of 50 BELEWS CREEK STEAM STATION Dixon's Outlier Test for Sulfate Number of Observations = 11 10% critical value: 0.517 5% critical value: 0.576 1% critical value: 0.679 1. Observation Value 9600 is a Potential Outlier (Upper Tail)? Test Statistic: 0.636 For 10% significance level, 9600 is an outlier. For 5% significance level, 9600 is an outlier. For 1% significance level, 9600 is not an outlier. 2. Observation Value 5 is a Potential Outlier (Lower Tail)? Test Statistic: 0.333 For 10% significance level, 5 is not an outlier. For 5% significance level, 5 is not an outlier. For 1% significance level, 5 is not an outlier. P:1Duke Energy Carol inas\Statistics_CAMAIBTV Reports for CSAs\Belews C reek\D RAFT\Append ices\ Appendix G - Outlier Test Results -Bedrock -BC APPENDIX G Page 32 of 50 BELEWS CREEK STEAM STATION Dixon's Outlier Test for Sulfide Number of Observations = 11 10% critical value: 0.517 5% critical value: 0.576 1% critical value: 0.679 1. Observation Value 100 is a Potential Outlier (Upper Tail)? Test Statistic: NaN For 10% significance level, 100 is an outlier. For 5% significance level, 100 is an outlier. For 1% significance level, 100 is an outlier. 2. Observation Value 0.1 is a Potential Outlier (Lower Tail)? Test Statistic: 1.000 For 10% significance level, 0.1 is an outlier. For 5% significance level, 0.1 is an outlier. For 1% significance level, 0.1 is an outlier. P:1Duke Energy Carol inas\Statistics_CAMAIBTV Reports for CSAs\Belews C reek\D RAFT\Append ices\ Appendix G - Outlier Test Results -Bedrock -BC APPENDIX G Page 33 of 50 BELEWS CREEK STEAM STATION Dixon's Outlier Test for TDS Number of Observations = 11 10% critical value: 0.517 5% critical value: 0.576 1% critical value: 0.679 1. Observation Value 133000 is a Potential Outlier (Upper Tail)? Test Statistic: 0.395 For 10% significance level, 133000 is not an outlier. For 5% significance level, 133000 is not an outlier. For 1% significance level, 133000 is not an outlier. 2. Observation Value 81 is a Potential Outlier (Lower Tail)? Test Statistic: 0.511 For 10% significance level, 81 is not an outlier. For 5% significance level, 81 is not an outlier. For 1% significance level, 81 is not an outlier. P:1Duke Energy Carol inas\Statistics_CAMAIBTV Reports for CSAs\Belews C reek\D RAFT\Append ices\ Appendix G - Outlier Test Results -Bedrock -BC APPENDIX G Page 34 of 50 BELEWS CREEK STEAM STATION Dixon's Outlier Test for Thallium Number of Observations = 11 10% critical value: 0.517 5% critical value: 0.576 1% critical value: 0.679 1. Observation Value 0.1 is a Potential Outlier (Upper Tail)? Test Statistic: NaN For 10% significance level, 0.1 is an outlier. For 5% significance level, 0.1 is an outlier. For 1% significance level, 0.1 is an outlier. 2. Observation Value 0.1 is a Potential Outlier (Lower Tail)? Test Statistic: NaN For 10% significance level, 0.1 is an outlier. For 5% significance level, 0.1 is an outlier. For 1% significance level, 0.1 is an outlier. P:1Duke Energy Carol inas\Statistics_CAMAIBTV Reports for CSAs\Belews C reek\D RAFT\Append ices\ Appendix G - Outlier Test Results -Bedrock -BC APPENDIX G Page 35 of 50 BELEWS CREEK STEAM STATION Dixon's Outlier Test for TOC Number of Observations = 6 10% critical value: 0.482 5% critical value: 0.56 1% critical value: 0.698 1. Observation Value 10200 is a Potential Outlier (Upper Tail)? Test Statistic: 0.965 For 10% significance level, 10200 is an outlier. For 5% significance level, 10200 is an outlier. For 1% significance level, 10200 is an outlier. 2. Observation Value 670 is a Potential Outlier (Lower Tail)? Test Statistic: 0.005 For 10% significance level, 670 is not an outlier. For 5% significance level, 670 is not an outlier. For 1% significance level, 670 is not an outlier. P:1Duke Energy Carol inas\Statistics_CAMAIBTV Reports for CSAs\Belews C reek\D RAFT\Append ices\ Appendix G - Outlier Test Results -Bedrock -BC APPENDIX G Page 36 of 50 BELEWS CREEK STEAM STATION Dixon's Outlier Test for Vanadium Number of Observations = 11 10% critical value: 0.517 5% critical value: 0.576 1% critical value: 0.679 1. Observation Value 2.3 is a Potential Outlier (Upper Tail)? Test Statistic: 0.813 For 10% significance level, 2.3 is an outlier. For 5% significance level, 2.3 is an outlier. For 1% significance level, 2.3 is an outlier. 2. Observation Value 0.46 is a Potential Outlier (Lower Tail)? Test Statistic: 0.067 For 10% significance level, 0.46 is not an outlier. For 5% significance level, 0.46 is not an outlier. For 1% significance level, 0.46 is not an outlier. P:1Duke Energy Carol inas\Statistics_CAMAIBTV Reports for CSAs\Belews C reek\D RAFT\Append ices\ Appendix G - Outlier Test Results -Bedrock -BC APPENDIX G Page 37 of 50 BELEWS CREEK STEAM STATION Dixon's Outlier Test for Zinc Number of Observations = 11 10% critical value: 0.517 5% critical value: 0.576 1% critical value: 0.679 1. Observation Value 52.1 is a Potential Outlier (Upper Tail)? Test Statistic: 0.626 For 10% significance level, 52.1 is an outlier. For 5% significance level, 52.1 is an outlier. For 1% significance level, 52.1 is not an outlier. 2. Observation Value 4 is a Potential Outlier (Lower Tail)? Test Statistic: 0.073 For 10% significance level, 4 is not an outlier. For 5% significance level, 4 is not an outlier. For 1% significance level, 4 is not an outlier. P:1Duke Energy Carol inas\Statistics_CAMAIBTV Reports for CSAs\Belews C reek\D RAFT\Append ices\ Appendix G - Outlier Test Results -Bedrock -BC APPENDIX G Page 38 of 50 BELEWS CREEK STEAM STATION Dixon's Outlier Test for Radium Number of Observations = 5 10% critical value: 0.557 5% critical value: 0.642 1% critical value: 0.78 1. Observation Value 6.55 is a Potential Outlier (Upper Tail)? Test Statistic: 0.931 For 10% significance level, 6.55 is an outlier. For 5% significance level, 6.55 is an outlier. For 1% significance level, 6.55 is an outlier. 2. Observation Value 0.0151 is a Potential Outlier (Lower Tail)? Test Statistic: 0.054 For 10% significance level, 0.0151 is not an outlier. For 5% significance level, 0.0151 is not an outlier. For 1% significance level, 0.0151 is not an outlier. P:1Duke Energy Carol inas\Statistics_CAMAIBTV Reports for CSAs\Belews C reek\D RAFT\Append ices\ Appendix G - Outlier Test Results -Bedrock -BC APPENDIX G Page 39 of 50 BELEWS CREEK STEAM STATION Dixon's Outlier Test for Uranium Number of Observations = 8 10% critical value: 0.479 5% critical value: 0.554 1% critical value: 0.683 1. Observation Value 1.96 is a Potential Outlier (Upper Tail)? Test Statistic: 0.755 For 10% significance level, 1.96 is an outlier. For 5% significance level, 1.96 is an outlier. For 1% significance level, 1.96 is an outlier. 2. Observation Value 0.065 is a Potential Outlier (Lower Tail)? Test Statistic: 0.027 For 10% significance level, 0.065 is not an outlier. For 5% significance level, 0.065 is not an outlier. For 1% significance level, 0.065 is not an outlier. P:1Duke Energy Carol inas\Statistics_CAMAIBTV Reports for CSAs\Belews C reek\D RAFT\Append ices\ Appendix G - Outlier Test Results -Bedrock -BC APPENDIX G Page 40 of 50 BELEWS CREEK STEAM STATION Outlier Tests for Selected Uncensored Variables User Selected Options Date/Time of Computation ProUCL 5.17/13/2017 4:33:57 PM From File Belews_BG BR GW Data -May 2017 -for ProUCL_NCSS.xls Full Precision OFF P:1Duke Energy Carol inas\Statistics_CAMAIBTV Reports for CSAs\Belews Creek\DRAFT1Appendices\ Appendix G - Outlier Test Results -Bedrock -BC APPENDIX G Page 41 of 50 BELEWS CREEK STEAM STATION Dixon's Outlier Test for pH Number of Observations = 10 10% critical value: 0.409 5% critical value: 0.477 1% critical value: 0.597 1. Observation Value 7.24 is a Potential Outlier (Upper Tail)? Test Statistic: 0.681 For 10% significance level, 7.24 is an outlier. For 5% significance level, 7.24 is an outlier. For 1% significance level, 7.24 is an outlier. 2. Observation Value 6.3 is a Potential Outlier (Lower Tail)? Test Statistic: 0.000 For 10% significance level, 6.3 is not an outlier. For 5% significance level, 6.3 is not an outlier. For 1% significance level, 6.3 is not an outlier. P:1Duke Energy Carol inas\Statistics_CAMAIBTV Reports for CSAs\Belews C reek\D RAFT\Append ices\ Appendix G - Outlier Test Results -Bedrock -BC APPENDIX G Page 42 of 50 BELEWS CREEK STEAM STATION Dixon's Outlier Test for Aluminum Number of Observations = 9 10% critical value: 0.441 5% critical value: 0.512 1% critical value: 0.635 1. Observation Value 144 is a Potential Outlier (Upper Tail)? Test Statistic: 0.807 For 10% significance level, 144 is an outlier. For 5% significance level, 144 is an outlier. For 1% significance level, 144 is an outlier. 2. Observation Value 80 is a Potential Outlier (Lower Tail)? Test Statistic: 0.475 For 10% significance level, 80 is an outlier. For 5% significance level, 80 is not an outlier. For 1% significance level, 80 is not an outlier. P:1Duke Energy Carol inas\Statistics_CAMAIBTV Reports for CSAs\Belews C reek\D RAFT\Append ices\ Appendix G - Outlier Test Results -Bedrock -BC APPENDIX G Page 43 of 50 BELEWS CREEK STEAM STATION Dixon's Outlier Test for Calcium Number of Observations = 10 10% critical value: 0.409 5% critical value: 0.477 1% critical value: 0.597 1. Observation Value 19100 is a Potential Outlier (Upper Tail)? Test Statistic: 0.634 For 10% significance level, 19100 is an outlier. For 5% significance level, 19100 is an outlier. For 1% significance level, 19100 is an outlier. 2. Observation Value 1680 is a Potential Outlier (Lower Tail)? Test Statistic: 0.412 For 10% significance level, 1680 is an outlier. For 5% significance level, 1680 is not an outlier. For 1% significance level, 1680 is not an outlier. P:1Duke Energy Carol inas\Statistics_CAMAIBTV Reports for CSAs\Belews C reek\D RAFT\Append ices\ Appendix G - Outlier Test Results -Bedrock -BC APPENDIX G Page 44 of 50 BELEWS CREEK STEAM STATION Dixon's Outlier Test for Chromium Number of Observations = 10 10% critical value: 0.409 5% critical value: 0.477 1% critical value: 0.597 1. Observation Value 34.7 is a Potential Outlier (Upper Tail)? Test Statistic: 0.820 For 10% significance level, 34.7 is an outlier. For 5% significance level, 34.7 is an outlier. For 1% significance level, 34.7 is an outlier. 2. Observation Value 0.89 is a Potential Outlier (Lower Tail)? Test Statistic: 0.005 For 10% significance level, 0.89 is not an outlier. For 5% significance level, 0.89 is not an outlier. For 1% significance level, 0.89 is not an outlier. P:1Duke Energy Carol inas\Statistics_CAMAIBTV Reports for CSAs\Belews C reek\D RAFT\Append ices\ Appendix G - Outlier Test Results -Bedrock -BC APPENDIX G Page 45 of 50 BELEWS CREEK STEAM STATION Dixon's Outlier Test for Nickel Number of Observations = 10 10% critical value: 0.409 5% critical value: 0.477 1% critical value: 0.597 1. Observation Value 20 is a Potential Outlier (Upper Tail)? Test Statistic: 0.548 For 10% significance level, 20 is an outlier. For 5% significance level, 20 is an outlier. For 1% significance level, 20 is not an outlier. 2. Observation Value 0.54 is a Potential Outlier (Lower Tail)? Test Statistic: 0.015 For 10% significance level, 0.54 is not an outlier. For 5% significance level, 0.54 is not an outlier. For 1% significance level, 0.54 is not an outlier. P:1Duke Energy Carol inas\Statistics_CAMAIBTV Reports for CSAs\Belews C reek\D RAFT\Append ices\ Appendix G - Outlier Test Results -Bedrock -BC APPENDIX G Page 46 of 50 BELEWS CREEK STEAM STATION Dixon's Outlier Test for Sodium Number of Observations = 11 10% critical value: 0.517 5% critical value: 0.576 1% critical value: 0.679 1. Observation Value 12000 is a Potential Outlier (Upper Tail)? Test Statistic: 0.565 For 10% significance level, 12000 is an outlier. For 5% significance level, 12000 is not an outlier. For 1% significance level, 12000 is not an outlier. 2. Observation Value 3590 is a Potential Outlier (Lower Tail)? Test Statistic: 0.752 For 10% significance level, 3590 is an outlier. For 5% significance level, 3590 is an outlier. For 1% significance level, 3590 is an outlier. P:1Duke Energy Carol inas\Statistics_CAMAIBTV Reports for CSAs\Belews C reek\D RAFT\Append ices\ Appendix G - Outlier Test Results -Bedrock -BC APPENDIX G Page 47 of 50 BELEWS CREEK STEAM STATION Dixon's Outlier Test for Zinc Number of Observations = 10 10% critical value: 0.409 5% critical value: 0.477 1% critical value: 0.597 1. Observation Value 41 is a Potential Outlier (Upper Tail)? Test Statistic: 0.514 For 10% significance level, 41 is an outlier. For 5% significance level, 41 is an outlier. For 1% significance level, 41 is not an outlier. 2. Observation Value 4 is a Potential Outlier (Lower Tail)? Test Statistic: 0.000 For 10% significance level, 4 is not an outlier. For 5% significance level, 4 is not an outlier. For 1% significance level, 4 is not an outlier. P:1Duke Energy Carol inas\Statistics_CAMAIBTV Reports for CSAs\Belews C reek\D RAFT\Append ices\ Appendix G - Outlier Test Results -Bedrock -BC APPENDIX G Page 48 of 50 BELEWS CREEK STEAM STATION Outlier Tests for Selected Uncensored Variables User Selected Options Date/Time of Computation ProUCL 5.17/13/2017 4:41:25 PM From File Belews_BG BR GW Data -May 2017 -for ProUCL_NCSS.xls Full Precision OFF P:1Duke Energy Carol inas\Statistics_CAMAIBTV Reports for CSAs\Belews C reek\D RAFT\Append ices\ Appendix G - Outlier Test Results -Bedrock -BC APPENDIX G Page 49 of 50 BELEWS CREEK STEAM STATION Dixon's Outlier Test for Vanadium Number of Observations = 10 10% critical value: 0.409 5% critical value: 0.477 1% critical value: 0.597 1. Observation Value 1.8 is a Potential Outlier (Upper Tail)? Test Statistic: 0.742 For 10% significance level, 1.8 is an outlier. For 5% significance level, 1.8 is an outlier. For 1% significance level, 1.8 is an outlier. 2. Observation Value 0.46 is a Potential Outlier (Lower Tail)? Test Statistic: 0.056 For 10% significance level, 0.46 is not an outlier. For 5% significance level, 0.46 is not an outlier. For 1% significance level, 0.46 is not an outlier. P:1Duke Energy Carol inas\Statistics_CAMAIBTV Reports for CSAs\Belews C reek\D RAFT\Append ices\ Appendix G - Outlier Test Results -Bedrock -BC APPENDIX G Page 50 of 50 Proposed Background Threshold Values For Naturally Occurring Concentrations in Groundwater and Soil October 2017 Belews Creek Steam Station APPENDIX H OUTLIER TEST RESULTS - SOIL SynTerra P:\Duke Energy Carolinas\Statistics—CAMA\BTV Reports for CSAs\Belews Creek\DRAFT\Belews Creek_BTV Report Text_CSA2_FINAL. docx