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Home My WebLink About4204_Halifax_2018AnnualGWMonitoringReport_20190131 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 1/31/2019 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 MW-8 TOC=308.43 DTW=5.90 GWE=302.53 MW-9 TOC=277.26 DTW=9.95 GWE=267.31 MW-10 TOC=258.72 DTW=3.50 GWE=255.22 MW-11 TOC=265.93 DTW=4.96 GWE=260.97 MW-12 TOC=329.33 DTW=40.00 GWE=289.33 MW-17 TOC=294.38 DTW=15.83 GWE=278.55 MW-10 MW-1 TOC= DTW= GWE=G:\CAD\Halifax\Halifax-8\sheets\HALI-B0319.dwg - 1/2/2019 4:11 PMDRAWN:APPROVED:PROJECT NO:SCALE:FILENAME:DATE:FIGURE NO.PREPARED BY:PREPARED FOR:SMITHGARDNER+© 2019 Smith Gardner, Inc.14 N. Boylan Avenue, Raleigh NC 27603NC LIC. NO. F-1370 (ENGINEERING)919.828.0577SC COA NO. C014881526 Richland St., Columbia SC 29201HALIFAX COUNTYCOAL ASH LANDFILLPOTENTIOMETRIC SURFACE MAPAUGUST 2018C.J.W.S.C.R.AS SHOWN1Jan 2019HALIFAX-8HALI-B0319DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 This Page Intentionally Left Blank DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Table 1 Groundwater Elevation Halifax County Coal Ash Landfill By: SCR Date:01/02/2018 H:\Projects\Groundwater Monitoring\2. Groundwater Monitoring Reports\Halifax\CCC. 2018 Annual Report\2018 Halifax Annual COAL ASH tables.xlsx February 2018 Well Well Installation Date Latitiude Longitude Well Diameter (inches) Total Well Depth (ft. bgs) Ground Surface Elevation (ft. amsl) TOC Elevation (ft) Measured Well Depth (ft) Depth to Water (ft) Water Table Elevation (ft) Screen Interval (ft. bgs) Screen Geology MW-8 3/5/1992 36.38141717 77.80995961 2 20 311.12 308.43 23.38 11.70 296.73 5 - 20 NA MW-9 1/5/1994 36.37798483 77.81249147 2 25 275.51 277.26 21.92 10.39 266.87 10 - 25 PWR MW-10 1/10/1994 36.37703808 77.81116511 2 16.5 255.87 258.72 16.14 3.33 255.39 5 - 15 PWR MW-11 1/7/1994 36.37672683 77.80983186 2 20 262.04 265.93 21.72 4.92 261.01 4 - 19 clayey silt/sand MW-12 1/7/1994 36.37806319 77.80701042 2 50 325.67 329.33 51.34 41.70 287.63 34.5 - 49.5 sand MW-17 1/7/1999 36.37840783 77.81010639 2 25 291.14 294.38 26.88 18.31 276.07 15 - 25 saprolite August 2018 Well Well Installation Date Latitiude Longitude Well Diameter (inches) Total Well Depth (ft. bgs) Ground Surface Elevation (ft. amsl) TOC Elevation (ft) Measured Well Depth (ft) Depth to Water (ft) Water Table Elevation (ft) Screen Interval (ft. bgs) Screen Geology MW-8 3/5/1992 36.38141717 77.80995961 2 20 311.12 308.43 23.38 5.90 302.53 5 - 20 NA MW-9 1/5/1994 36.37798483 77.81249147 2 25 275.51 277.26 21.92 9.95 267.31 10 - 25 PWR MW-10 1/10/1994 36.37703808 77.81116511 2 16.5 255.87 258.72 16.14 3.50 255.22 5 - 15 PWR MW-11 1/7/1994 36.37672683 77.80983186 2 20 262.04 265.93 21.72 4.96 260.97 4 - 19 clayey silt/sand MW-12 1/7/1994 36.37806319 77.80701042 2 50 325.67 329.33 51.34 40.00 289.33 34.5 - 49.5 sand MW-17 1/7/1999 36.37840783 77.81010639 2 25 291.14 294.38 26.88 15.83 278.55 15 - 25 saprolite DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Table 2 Field Parameters Halifax County Coal Ash Landfill By: SCR Date:01/02/2019 H:\Projects\Groundwater Monitoring\2. Groundwater Monitoring Reports\Halifax\CCC. 2018 Annual Report\2018 Halifax Annual COAL ASH tables.xlsx February 2018 MW-8 4.4 61 13 2.9 MW-9 4.7 33 14 3.1 MW-10 5.2 45 12 2.5 MW-11 5.8 93 12 4.3 MW-12 4.9 33 15 170 MW-17 4.9 29 16 3.7 SW-3 6.6 87 11 5.6 Basin 1 5.2 5570 13 1.9 August 2018 MW-8 4.7 70 21 19.0 MW-9 5.1 36 21 5.1 MW-10 5.3 46 20 <1.0 MW-11 6.1 114 22 2.1 MW-12 4.6 34 17 310 MW-17 4.8 23 21 4.1 SW-3 7.2 2721 23 9.6 Basin 1 7.2 10401 29 1.8 NOTE: Data from 8/14/2018 and 2/19/2018 Environment 1, Incorporated Laboratory Report Client ID#6042. Monitoring Location pH (std units) Specific Conductivity (uMhos/cm) Temperature (degrees C)Turbidity (NTU) Monitoring Location pH (std units) Specific Conductivity (uMhos/cm) Temperature (degrees C)Turbidity (NTU) DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Table 3 Inorganic Constituents - Groundwater Samples Halifax County Coal Ash Landfill August 14, 2018 By: SCR Date:01/02/2019 H:\Projects\Groundwater Monitoring\2. Groundwater Monitoring Reports\Halifax\CCC. 2018 Annual Report\2018 Halifax Annual COAL ASH tables.xlsx February 2018 Parameter MDL SWSL 2L Standard MCL 2B Standard MW-8 MW-9 MW-10 MW-11 MW-12 MW-17 SW-3 Basin 1 Total Organic Carbon (mg/L)0.12 NE NE NE NE 1.02 <0.12 <0.12 <0.12 <0.12 <0.12 2.18 <0.12 Chloride (mg/L)5.0 NE 250 250 230 <5 5 <5 <5 6 <5 6 7150 Sulfate (mg/L)1.04 250 250 250 NE 8.6J <1.04 <1.04 <1.04 <1.04 <1.04 <1.04 962 Arsenic (ug/L)0.07 10 10 10 10 <0.07 <0.07 <0.07 <0.07 0.14J <0.07 2J 2J Barium (ug/L)0.07 100 700 2000 2000000 49.5J 24.5J 23.8J 9.6J 88.5J 31.6J 15.7J 184 Cadmium (ug/L)0.08 1 2 5 2 0.14J 1 1 0.42J 0.32J 1 <0.08 0.69J Chromium, total (ug/L)0.08 10 10 100 50 <0.08 <0.08 0.09J <0.08 1.3J 0.5J 0.4J 5.9J Copper (ug/L)0.09 10 1000 1300 7 0.51J 0.8J 0.67J 0.55J 3.3J 0.65J 0.34J 2.5J Lead (ug/L)0.08 10 15 15 25 1.2J 0.11J <0.08 <0.08 2.9J <0.08 0.1J <0.08 Selenium (ug/L)0.51 10 20 50 5 <0.51 <0.51 <0.51 <0.51 <0.51 <0.51 6.3J <0.51 Zinc (ug/L)1.36 10 1000 5000*50 2.4J 2.7J 1.9J 1.8J 30 5.6J 1.1J 12 August 2018 Parameter MDL SWSL 2L Standard MCL 2B Standard MW-8 MW-9 MW-10 MW-11 MW-12 MW-17 SW-3 Basin 1 Total Organic Carbon (mg/L)0.12 NE NE NE NE 3.68 <0.12 <0.12 <0.12 <0.12 <0.12 <0.12 <0.12 Chloride (mg/L)5.0 NE 250 250 230 <5.0 <5.0 <5.0 <5.0 5 <5.0 781 4700 Sulfate (mg/L)5.0 250 250 250 NE 13.2 <5.0 6.7 5.8 <5.0 <5.0 288.0 1030 Arsenic (ug/L)0.07 10 10 10 10 0.26J <0.07 <0.07 <0.07 0.26J <0.07 12 6 Barium (ug/L)0.07 100 700 2000 2000000 76.1 25.5 27.6 9.2J 141.0 30.4 41.7 133 Cadmium (ug/L)0.08 1 2 5 2 0.19J 0.26J 0.07J 0.03J 0.54J 0.20J 0.48J 0.6J Chromium, total (ug/L)0.08 10 10 100 50 <0.08 <0.08 <0.08 <0.08 1.6J <0.08 0.3J 4.4J Copper (ug/L)0.09 10 1000 1300 7 1.5J 0.21J 0.10J 0.13J 4.4J 0.33J 0.71J 1.5J Lead (ug/L)0.08 10 15 15 25 1.3J 0.23J 0.03J <0.08 4.9J 0.42J 0.2J 0.08J Selenium (ug/L)0.51 10 20 50 5 0.22J <0.51 <0.51 <0.51 0.76J <0.51 54 1.1J Silver (ug/l)0.20 10 20 100 0.06 <0.20 <0.20 <0.20 <0.20 0.14J 0.05J <0.20 <0.20 Zinc (ug/L)1.36 10 1000 5000*50 3.5J 4.2J 1.8J 1.2J 43 4.6J 11 7.1J NOTE: MDL -Method Detection Limit Bold -Concentration above 2L or 2B Standard SWSL -Solid Waste Section Quantitation Limit J -J-qualified reported from lab data between MDL and MRL 2L -Groundwater Standard (15A NCAC 2L 0200)NE -Standard Not Established MCL -Maximum Contaminant Limit *-National Secondary Drinking Water Standard 2B -NCAC 2B Standard for Class C waters BDL -Not detected at or above the MDL Data from 8/14/2018 and 2/19/2018 Environment 1, Incorporated Laboratory Report Client ID#6042. DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Table 4 Inorganic Constituents - Sediment Samples Halifax County Coal Ash Landfill By: SCR Date:01/02/2019 H:\Projects\Groundwater Monitoring\2. Groundwater Monitoring Reports\Halifax\CCC. 2018 Annual Report\2018 Halifax Annual COAL ASH tables.xlsx February 2018 REPORT SWSL Sediment #1 Sediment #2 LIMIT Upstream Downstream Arsenic 0.100 10 <0.100 <0.100 Barium 2.00 100 <2.00 <2.00 Cadmium 0.050 1 <0.050 <0.050 Chromium, total 0.100 10 <0.100 <0.100 Lead 0.050 10 <0.050 <0.050 Mercury 0.005 0.2 <0.005 <0.005 Selenium 0.100 10 <0.100 <0.100Silver0.100 10 <0.100 <0.100 August 2018 REPORT SWSL Sediment #1 Sediment #2 LIMIT Upstream Downstream Arsenic 0.100 10 <0.100 <0.100 Barium 2.00 100 <2.00 <2.00 Cadmium 0.050 1 <0.050 <0.050 Chromium, total 0.100 10 <0.100 <0.100 Lead 0.050 10 <0.050 <0.050 Mercury 0.005 0.2 <0.005 <0.005 Selenium 0.100 10 <0.100 <0.100 Silver 0.100 10 <0.100 <0.100 NOTE: LOQ/CL -Reporting Limit/Control Limit for the parameter recovery result SWSL -Solid Waste Section Quantitation Limit < LOQ/CL -Not detected at or above the LOQ/CL Bold Letters -Constituent detected above SWSL Results are from TCLP analysis presented in ug/l unless otherwise noted. Results from SGS Accutest on 08/30/2018 - Job No. FA56925 Units are presented in mg/L DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Table 5 Statistical Analysis Summary Halifax Coal Ash By:BW Date: 1/31/2019 H:\Projects\Groundwater Monitoring\2. Groundwater Monitoring Reports\Halifax\CCC. 2018 Annual Report\2018 Halifax Annual COAL ASH tables.xlsx Constituent % Non Detect Confidence Level (%)Test Statistically Significant? Antimony 54.17 88.89 NPTI, SSA No Arsenic 48.25 99 PPI No Barium 2.63 99 WRS No Beryllium 8.33 99 PPI, SSA No Cadmium 6.14 99 PPI No Calcium 2.08 99 WRS, SSA No Chromium, total 35.09 99 PPI No Cobalt 14.58 99 WRS, SSA No Copper 3.51 99 PPI No Fluoride 100.00 NA None NA Lead 9.65 99 PPI No Molybdenum 75.00 88.89 NPTI, SSA No pH 2.63 99 WRS, SSA No Selenium 64.91 95 NPTI, SSA No Sulfate 44.74 99 KW, SSA No Thallium 58.33 88.89 NPTI, SSA Yes Total Dissolved Residue 2.08 99 WRS, SSA No Zinc 3.51 99 KW, SSA Yes Notes: NPTI = Non-Parametric Tolerance Interval SSA = Sen's Slope Analysis PPI = Parametric Prediction Interval WRS = Wilcoxon Rank Sum Non-Parametric Analysis NA = Not Applicable KW = Kruskal-Wallis Non-Parametric Test MW-8 serves as the background well Statistics were not performed for Flouride as the events were all non-detected. DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 This page intentionally left blank. DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Table 6 Calculated Groundwater Velocities Halifax County Coal Ash Landfill By: SCR Date:01/02/2019 H:\Projects\Groundwater Monitoring\2. Groundwater Monitoring Reports\Halifax\CCC. 2018 Annual Report\2018 Halifax Annual COAL ASH tables.xlsx February 2018 Well Hydraulic Conductivity (ft/day) Porosity Hydraulic Gradient (ft/ft) Ground Water Velocity (ft/day) MW-8 0.047 0.2 0.0182 0.0043 MW-9 0.047 0.2 0.0241 0.0057 MW-10 0.047 0.2 0.0485 0.0114 MW-11 0.047 0.2 0.0337 0.0079 MW-12 0.047 0.2 0.0215 0.0051 MW-17 0.047 0.2 0.0393 0.0092 0.0073 August 2018 Well Hydraulic Conductivity (ft/day) Porosity Hydraulic Gradient (ft/ft) Ground Water Velocity (ft/day) MW-8 0.047 0.2 0.0223 0.0052 MW-9 0.047 0.2 0.0250 0.0059 MW-10 0.047 0.2 0.0406 0.0095 MW-11 0.047 0.2 0.0309 0.0073 MW-12 0.047 0.2 0.0108 0.0025 MW-17 0.047 0.2 0.0293 0.0069 0.0062 NOTE: Hydraulic Conductivity averaged from Closed MSW well data Porosity values assumed from Groundwater & Wells (Driscoll) Hydraulic Gradient based on February and August 2018 groundwater elevations Velocity Calculated from V=K*i/n Average Velocity Average Velocity DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 This page intentionally left blank. DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 1 Concentrations (ppb) Parameter: Antimony Original Data (Not Transformed) Non-Detects Replaced with Detection Limit Total Measurements: 48 Total Non-Detect: 26 Percent Non-Detects: 54.1667% Total Background Measurements: 8 There is 1 background location Loc.Meas.ND Date Conc.Original MW- 8 8 3 (37.5%)10/24/2016 0.06 0.06 12/1/2016 ND<0.05 ND<0.05 1/4/2017 ND<0.05 ND<0.05 2/16/2017 ND<0.05 ND<0.05 4/20/2017 0.09 0.09 5/22/2017 0.1 0.1 6/29/2017 0.1 0.1 8/16/2017 0.08 0.08 There are 5 compliance locations Loc.Meas.ND Date Conc.Original MW- 9 8 6 (75%)10/24/2016 ND<0.05 ND<0.05 12/1/2016 ND<0.05 ND<0.05 1/4/2017 ND<0.05 ND<0.05 2/16/2017 ND<0.05 ND<0.05 4/20/2017 ND<0.06 ND<0.06 5/22/2017 0.06 0.06 6/29/2017 0.1 0.1 8/16/2017 ND<0.06 ND<0.06 MW-10 8 5 (62.5%)10/24/2016 0.08 0.08 12/1/2016 ND<0.05 ND<0.05 1/4/2017 ND<0.05 ND<0.05 2/16/2017 ND<0.05 ND<0.05 4/20/2017 ND<0.06 ND<0.06 5/22/2017 0.13 0.13 6/29/2017 0.2 0.2 8/16/2017 ND<0.06 ND<0.06 MW-11 8 3 (37.5%)10/24/2016 0.12 0.12 12/1/2016 ND<0.05 ND<0.05 1/4/2017 ND<0.05 ND<0.05 2/16/2017 ND<0.05 ND<0.05 4/20/2017 0.1 0.1 5/22/2017 0.12 0.12 6/29/2017 0.14 0.14 8/16/2017 0.06 0.06 MW-12 8 5 (62.5%)10/24/2016 ND<0.05 ND<0.05 12/1/2016 0.12 0.12 1/4/2017 ND<0.05 ND<0.05 2/16/2017 0.06 0.06 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 2 4/20/2017 ND<0.06 ND<0.06 5/22/2017 0.11 0.11 6/29/2017 ND<0.06 ND<0.06 8/16/2017 ND<0.06 ND<0.06 MW-17 8 4 (50%)10/24/2016 0.12 0.12 12/1/2016 ND<0.05 ND<0.05 1/4/2017 ND<0.05 ND<0.05 2/16/2017 ND<0.05 ND<0.05 4/20/2017 0.08 0.08 5/22/2017 ND<0.06 ND<0.06 6/29/2017 0.12 0.12 8/16/2017 0.07 0.07 There are 0 unused locations Loc.Meas.ND Date Conc.Original DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 3 Non-Parametric Tolerance Interval Parameter: Antimony Original Data (Not Transformed) Non-Detects Replaced with Detection Limit Total Percent Non-Detects = 54.1667% Background measurements (n) = 8 Maximum Background Concentration = 0.1 Minimum Coverage = 68.8% Average Coverage = 88.8889% Location Date Value Significant MW- 9 10/24/2016 ND<0.05 FALSE MW- 9 12/1/2016 ND<0.05 FALSE MW- 9 1/4/2017 ND<0.05 FALSE MW- 9 2/16/2017 ND<0.05 FALSE MW- 9 4/20/2017 ND<0.06 FALSE MW- 9 5/22/2017 0.06 FALSE MW- 9 6/29/2017 0.1 FALSE MW- 9 8/16/2017 ND<0.06 FALSE MW-10 10/24/2016 0.08 FALSE MW-10 12/1/2016 ND<0.05 FALSE MW-10 1/4/2017 ND<0.05 FALSE MW-10 2/16/2017 ND<0.05 FALSE MW-10 4/20/2017 ND<0.06 FALSE MW-10 5/22/2017 0.13 TRUE MW-10 6/29/2017 0.2 TRUE MW-10 8/16/2017 ND<0.06 FALSE MW-11 10/24/2016 0.12 TRUE MW-11 12/1/2016 ND<0.05 FALSE MW-11 1/4/2017 ND<0.05 FALSE MW-11 2/16/2017 ND<0.05 FALSE MW-11 4/20/2017 0.1 FALSE MW-11 5/22/2017 0.12 TRUE MW-11 6/29/2017 0.14 TRUE MW-11 8/16/2017 0.06 FALSE MW-12 10/24/2016 ND<0.05 FALSE MW-12 12/1/2016 0.12 TRUE MW-12 1/4/2017 ND<0.05 FALSE MW-12 2/16/2017 0.06 FALSE MW-12 4/20/2017 ND<0.06 FALSE MW-12 5/22/2017 0.11 TRUE MW-12 6/29/2017 ND<0.06 FALSE MW-12 8/16/2017 ND<0.06 FALSE MW-17 10/24/2016 0.12 TRUE MW-17 12/1/2016 ND<0.05 FALSE MW-17 1/4/2017 ND<0.05 FALSE DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 4 MW-17 2/16/2017 ND<0.05 FALSE MW-17 4/20/2017 0.08 FALSE MW-17 5/22/2017 ND<0.06 FALSE MW-17 6/29/2017 0.12 TRUE MW-17 8/16/2017 0.07 FALSE DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 5 Sen's Slope Analysis Parameter: Antimony Location: MW-10 Original Data (Not Transformed) Non-Detects Replaced with Detection Limit 90% Confidence Level Xj Xk (Xj - Xk)/(j-k)Q ND<0.05 (12/1/2016)0.08 (10/24/2016)(0.05 - 0.08)/(2 - 1)-0.03 ND<0.05 (1/4/2017)0.08 (10/24/2016)(0.05 - 0.08)/(3 - 1)-0.015 ND<0.05 (2/16/2017)0.08 (10/24/2016)(0.05 - 0.08)/(4 - 1)-0.01 ND<0.06 (4/20/2017)0.08 (10/24/2016)(0.06 - 0.08)/(5 - 1)-0.005 0.13 (5/22/2017)0.08 (10/24/2016)(0.13 - 0.08)/(6 - 1)0.01 0.2 (6/29/2017)0.08 (10/24/2016)(0.2 - 0.08)/(7 - 1)0.02 ND<0.06 (8/16/2017)0.08 (10/24/2016)(0.06 - 0.08)/(8 - 1)-0.00285714 ND<0.05 (1/4/2017)ND<0.05 (12/1/2016)(0.05 - 0.05)/(3 - 2)0 ND<0.05 (2/16/2017)ND<0.05 (12/1/2016)(0.05 - 0.05)/(4 - 2)0 ND<0.06 (4/20/2017)ND<0.05 (12/1/2016)(0.06 - 0.05)/(5 - 2)0.00333333 0.13 (5/22/2017)ND<0.05 (12/1/2016)(0.13 - 0.05)/(6 - 2)0.02 0.2 (6/29/2017)ND<0.05 (12/1/2016)(0.2 - 0.05)/(7 - 2)0.03 ND<0.06 (8/16/2017)ND<0.05 (12/1/2016)(0.06 - 0.05)/(8 - 2)0.00166667 ND<0.05 (2/16/2017)ND<0.05 (1/4/2017)(0.05 - 0.05)/(4 - 3)0 ND<0.06 (4/20/2017)ND<0.05 (1/4/2017)(0.06 - 0.05)/(5 - 3)0.005 0.13 (5/22/2017)ND<0.05 (1/4/2017)(0.13 - 0.05)/(6 - 3)0.0266667 0.2 (6/29/2017)ND<0.05 (1/4/2017)(0.2 - 0.05)/(7 - 3)0.0375 ND<0.06 (8/16/2017)ND<0.05 (1/4/2017)(0.06 - 0.05)/(8 - 3)0.002 ND<0.06 (4/20/2017)ND<0.05 (2/16/2017)(0.06 - 0.05)/(5 - 4)0.01 0.13 (5/22/2017)ND<0.05 (2/16/2017)(0.13 - 0.05)/(6 - 4)0.04 0.2 (6/29/2017)ND<0.05 (2/16/2017)(0.2 - 0.05)/(7 - 4)0.05 ND<0.06 (8/16/2017)ND<0.05 (2/16/2017)(0.06 - 0.05)/(8 - 4)0.0025 0.13 (5/22/2017)ND<0.06 (4/20/2017)(0.13 - 0.06)/(6 - 5)0.07 0.2 (6/29/2017)ND<0.06 (4/20/2017)(0.2 - 0.06)/(7 - 5)0.07 ND<0.06 (8/16/2017)ND<0.06 (4/20/2017)(0.06 - 0.06)/(8 - 5)0 0.2 (6/29/2017)0.13 (5/22/2017)(0.2 - 0.13)/(7 - 6)0.07 ND<0.06 (8/16/2017)0.13 (5/22/2017)(0.06 - 0.13)/(8 - 6)-0.035 ND<0.06 (8/16/2017)0.2 (6/29/2017)(0.06 - 0.2)/(8 - 7)-0.14 Number of Q values = 28 Ordered Q Values n Q 1 -0.14 2 -0.035 3 -0.03 4 -0.015 5 -0.01 6 -0.005 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 6 7 -0.00285714 8 0 9 0 10 0 11 0 12 0.00166667 13 0.002 14 0.0025 15 0.00333333 16 0.005 17 0.01 18 0.01 19 0.02 20 0.02 21 0.0266667 22 0.03 23 0.0375 24 0.04 25 0.05 26 0.07 27 0.07 28 0.07 Sen's Estimator (Median Q) is 0.00291667 Tied Group Value Members 1 0.05 3 2 0.06 2 Time Period Observations 10/24/2016 1 12/1/2016 1 1/4/2017 1 2/16/2017 1 4/20/2017 1 5/22/2017 1 6/29/2017 1 8/16/2017 1 There are 0 time periods with multiple data A = 84 B = 0 C = 6 D = 0 E = 8 F = 0 a = 1176 b = 3024 c = 112 Group Variance = 60.6667 For 90% confidence interval (two-tailed), Z at (1-0.9)/2 = 1.64485 C = 12.8116 M1 = (28 - 12.8116)/2.0 = 7.59422 M2 = (28 + 12.8116)/2.0 + 1 = 21.4058 Lower limit is 0 = Q(8) Upper limit is 0.0266667 = Q(21) 0 < 0 < 0.0266667 indicating no trend in data. DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 7 Sen's Slope Analysis Parameter: Antimony Location: MW-11 Original Data (Not Transformed) Non-Detects Replaced with Detection Limit 90% Confidence Level Xj Xk (Xj - Xk)/(j-k)Q ND<0.05 (12/1/2016)0.12 (10/24/2016)(0.05 - 0.12)/(2 - 1)-0.07 ND<0.05 (1/4/2017)0.12 (10/24/2016)(0.05 - 0.12)/(3 - 1)-0.035 ND<0.05 (2/16/2017)0.12 (10/24/2016)(0.05 - 0.12)/(4 - 1)-0.0233333 0.1 (4/20/2017)0.12 (10/24/2016)(0.1 - 0.12)/(5 - 1)-0.005 0.12 (5/22/2017)0.12 (10/24/2016)(0.12 - 0.12)/(6 - 1)0 0.14 (6/29/2017)0.12 (10/24/2016)(0.14 - 0.12)/(7 - 1)0.00333333 0.06 (8/16/2017)0.12 (10/24/2016)(0.06 - 0.12)/(8 - 1)-0.00857143 ND<0.05 (1/4/2017)ND<0.05 (12/1/2016)(0.05 - 0.05)/(3 - 2)0 ND<0.05 (2/16/2017)ND<0.05 (12/1/2016)(0.05 - 0.05)/(4 - 2)0 0.1 (4/20/2017)ND<0.05 (12/1/2016)(0.1 - 0.05)/(5 - 2)0.0166667 0.12 (5/22/2017)ND<0.05 (12/1/2016)(0.12 - 0.05)/(6 - 2)0.0175 0.14 (6/29/2017)ND<0.05 (12/1/2016)(0.14 - 0.05)/(7 - 2)0.018 0.06 (8/16/2017)ND<0.05 (12/1/2016)(0.06 - 0.05)/(8 - 2)0.00166667 ND<0.05 (2/16/2017)ND<0.05 (1/4/2017)(0.05 - 0.05)/(4 - 3)0 0.1 (4/20/2017)ND<0.05 (1/4/2017)(0.1 - 0.05)/(5 - 3)0.025 0.12 (5/22/2017)ND<0.05 (1/4/2017)(0.12 - 0.05)/(6 - 3)0.0233333 0.14 (6/29/2017)ND<0.05 (1/4/2017)(0.14 - 0.05)/(7 - 3)0.0225 0.06 (8/16/2017)ND<0.05 (1/4/2017)(0.06 - 0.05)/(8 - 3)0.002 0.1 (4/20/2017)ND<0.05 (2/16/2017)(0.1 - 0.05)/(5 - 4)0.05 0.12 (5/22/2017)ND<0.05 (2/16/2017)(0.12 - 0.05)/(6 - 4)0.035 0.14 (6/29/2017)ND<0.05 (2/16/2017)(0.14 - 0.05)/(7 - 4)0.03 0.06 (8/16/2017)ND<0.05 (2/16/2017)(0.06 - 0.05)/(8 - 4)0.0025 0.12 (5/22/2017)0.1 (4/20/2017)(0.12 - 0.1)/(6 - 5)0.02 0.14 (6/29/2017)0.1 (4/20/2017)(0.14 - 0.1)/(7 - 5)0.02 0.06 (8/16/2017)0.1 (4/20/2017)(0.06 - 0.1)/(8 - 5)-0.0133333 0.14 (6/29/2017)0.12 (5/22/2017)(0.14 - 0.12)/(7 - 6)0.02 0.06 (8/16/2017)0.12 (5/22/2017)(0.06 - 0.12)/(8 - 6)-0.03 0.06 (8/16/2017)0.14 (6/29/2017)(0.06 - 0.14)/(8 - 7)-0.08 Number of Q values = 28 Ordered Q Values n Q 1 -0.08 2 -0.07 3 -0.035 4 -0.03 5 -0.0233333 6 -0.0133333 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 8 7 -0.00857143 8 -0.005 9 0 10 0 11 0 12 0 13 0.00166667 14 0.002 15 0.0025 16 0.00333333 17 0.0166667 18 0.0175 19 0.018 20 0.02 21 0.02 22 0.02 23 0.0225 24 0.0233333 25 0.025 26 0.03 27 0.035 28 0.05 Sen's Estimator (Median Q) is 0.00225 Tied Group Value Members 1 0.12 2 2 0.05 3 Time Period Observations 10/24/2016 1 12/1/2016 1 1/4/2017 1 2/16/2017 1 4/20/2017 1 5/22/2017 1 6/29/2017 1 8/16/2017 1 There are 0 time periods with multiple data A = 84 B = 0 C = 6 D = 0 E = 8 F = 0 a = 1176 b = 3024 c = 112 Group Variance = 60.6667 For 90% confidence interval (two-tailed), Z at (1-0.9)/2 = 1.64485 C = 12.8116 M1 = (28 - 12.8116)/2.0 = 7.59422 M2 = (28 + 12.8116)/2.0 + 1 = 21.4058 Lower limit is -0.005 = Q(8) Upper limit is 0.02 = Q(21) -0.005 < 0 < 0.02 indicating no trend in data. DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 9 Sen's Slope Analysis Parameter: Antimony Location: MW-12 Original Data (Not Transformed) Non-Detects Replaced with Detection Limit 90% Confidence Level Xj Xk (Xj - Xk)/(j-k)Q 0.12 (12/1/2016)ND<0.05 (10/24/2016)(0.12 - 0.05)/(2 - 1)0.07 ND<0.05 (1/4/2017)ND<0.05 (10/24/2016)(0.05 - 0.05)/(3 - 1)0 0.06 (2/16/2017)ND<0.05 (10/24/2016)(0.06 - 0.05)/(4 - 1)0.00333333 ND<0.06 (4/20/2017)ND<0.05 (10/24/2016)(0.06 - 0.05)/(5 - 1)0.0025 0.11 (5/22/2017)ND<0.05 (10/24/2016)(0.11 - 0.05)/(6 - 1)0.012 ND<0.06 (6/29/2017)ND<0.05 (10/24/2016)(0.06 - 0.05)/(7 - 1)0.00166667 ND<0.06 (8/16/2017)ND<0.05 (10/24/2016)(0.06 - 0.05)/(8 - 1)0.00142857 ND<0.05 (1/4/2017)0.12 (12/1/2016)(0.05 - 0.12)/(3 - 2)-0.07 0.06 (2/16/2017)0.12 (12/1/2016)(0.06 - 0.12)/(4 - 2)-0.03 ND<0.06 (4/20/2017)0.12 (12/1/2016)(0.06 - 0.12)/(5 - 2)-0.02 0.11 (5/22/2017)0.12 (12/1/2016)(0.11 - 0.12)/(6 - 2)-0.0025 ND<0.06 (6/29/2017)0.12 (12/1/2016)(0.06 - 0.12)/(7 - 2)-0.012 ND<0.06 (8/16/2017)0.12 (12/1/2016)(0.06 - 0.12)/(8 - 2)-0.01 0.06 (2/16/2017)ND<0.05 (1/4/2017)(0.06 - 0.05)/(4 - 3)0.01 ND<0.06 (4/20/2017)ND<0.05 (1/4/2017)(0.06 - 0.05)/(5 - 3)0.005 0.11 (5/22/2017)ND<0.05 (1/4/2017)(0.11 - 0.05)/(6 - 3)0.02 ND<0.06 (6/29/2017)ND<0.05 (1/4/2017)(0.06 - 0.05)/(7 - 3)0.0025 ND<0.06 (8/16/2017)ND<0.05 (1/4/2017)(0.06 - 0.05)/(8 - 3)0.002 ND<0.06 (4/20/2017)0.06 (2/16/2017)(0.06 - 0.06)/(5 - 4)0 0.11 (5/22/2017)0.06 (2/16/2017)(0.11 - 0.06)/(6 - 4)0.025 ND<0.06 (6/29/2017)0.06 (2/16/2017)(0.06 - 0.06)/(7 - 4)0 ND<0.06 (8/16/2017)0.06 (2/16/2017)(0.06 - 0.06)/(8 - 4)0 0.11 (5/22/2017)ND<0.06 (4/20/2017)(0.11 - 0.06)/(6 - 5)0.05 ND<0.06 (6/29/2017)ND<0.06 (4/20/2017)(0.06 - 0.06)/(7 - 5)0 ND<0.06 (8/16/2017)ND<0.06 (4/20/2017)(0.06 - 0.06)/(8 - 5)0 ND<0.06 (6/29/2017)0.11 (5/22/2017)(0.06 - 0.11)/(7 - 6)-0.05 ND<0.06 (8/16/2017)0.11 (5/22/2017)(0.06 - 0.11)/(8 - 6)-0.025 ND<0.06 (8/16/2017)ND<0.06 (6/29/2017)(0.06 - 0.06)/(8 - 7)0 Number of Q values = 28 Ordered Q Values n Q 1 -0.07 2 -0.05 3 -0.03 4 -0.025 5 -0.02 6 -0.012 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 10 7 -0.01 8 -0.0025 9 0 10 0 11 0 12 0 13 0 14 0 15 0 16 0.00142857 17 0.00166667 18 0.002 19 0.0025 20 0.0025 21 0.00333333 22 0.005 23 0.01 24 0.012 25 0.02 26 0.025 27 0.05 28 0.07 Sen's Estimator (Median Q) is 0 Tied Group Value Members 1 0.05 2 2 0.06 4 Time Period Observations 10/24/2016 1 12/1/2016 1 1/4/2017 1 2/16/2017 1 4/20/2017 1 5/22/2017 1 6/29/2017 1 8/16/2017 1 There are 0 time periods with multiple data A = 174 B = 0 C = 24 D = 0 E = 14 F = 0 a = 1176 b = 3024 c = 112 Group Variance = 55.6667 For 90% confidence interval (two-tailed), Z at (1-0.9)/2 = 1.64485 C = 12.2723 M1 = (28 - 12.2723)/2.0 = 7.86387 M2 = (28 + 12.2723)/2.0 + 1 = 21.1361 Lower limit is -0.0025 = Q(8) Upper limit is 0.00333333 = Q(21) -0.0025 < 0 < 0.00333333 indicating no trend in data. DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 11 Sen's Slope Analysis Parameter: Antimony Location: MW-17 Original Data (Not Transformed) Non-Detects Replaced with Detection Limit 90% Confidence Level Xj Xk (Xj - Xk)/(j-k)Q ND<0.05 (12/1/2016)0.12 (10/24/2016)(0.05 - 0.12)/(2 - 1)-0.07 ND<0.05 (1/4/2017)0.12 (10/24/2016)(0.05 - 0.12)/(3 - 1)-0.035 ND<0.05 (2/16/2017)0.12 (10/24/2016)(0.05 - 0.12)/(4 - 1)-0.0233333 0.08 (4/20/2017)0.12 (10/24/2016)(0.08 - 0.12)/(5 - 1)-0.01 ND<0.06 (5/22/2017)0.12 (10/24/2016)(0.06 - 0.12)/(6 - 1)-0.012 0.12 (6/29/2017)0.12 (10/24/2016)(0.12 - 0.12)/(7 - 1)0 0.07 (8/16/2017)0.12 (10/24/2016)(0.07 - 0.12)/(8 - 1)-0.00714286 ND<0.05 (1/4/2017)ND<0.05 (12/1/2016)(0.05 - 0.05)/(3 - 2)0 ND<0.05 (2/16/2017)ND<0.05 (12/1/2016)(0.05 - 0.05)/(4 - 2)0 0.08 (4/20/2017)ND<0.05 (12/1/2016)(0.08 - 0.05)/(5 - 2)0.01 ND<0.06 (5/22/2017)ND<0.05 (12/1/2016)(0.06 - 0.05)/(6 - 2)0.0025 0.12 (6/29/2017)ND<0.05 (12/1/2016)(0.12 - 0.05)/(7 - 2)0.014 0.07 (8/16/2017)ND<0.05 (12/1/2016)(0.07 - 0.05)/(8 - 2)0.00333333 ND<0.05 (2/16/2017)ND<0.05 (1/4/2017)(0.05 - 0.05)/(4 - 3)0 0.08 (4/20/2017)ND<0.05 (1/4/2017)(0.08 - 0.05)/(5 - 3)0.015 ND<0.06 (5/22/2017)ND<0.05 (1/4/2017)(0.06 - 0.05)/(6 - 3)0.00333333 0.12 (6/29/2017)ND<0.05 (1/4/2017)(0.12 - 0.05)/(7 - 3)0.0175 0.07 (8/16/2017)ND<0.05 (1/4/2017)(0.07 - 0.05)/(8 - 3)0.004 0.08 (4/20/2017)ND<0.05 (2/16/2017)(0.08 - 0.05)/(5 - 4)0.03 ND<0.06 (5/22/2017)ND<0.05 (2/16/2017)(0.06 - 0.05)/(6 - 4)0.005 0.12 (6/29/2017)ND<0.05 (2/16/2017)(0.12 - 0.05)/(7 - 4)0.0233333 0.07 (8/16/2017)ND<0.05 (2/16/2017)(0.07 - 0.05)/(8 - 4)0.005 ND<0.06 (5/22/2017)0.08 (4/20/2017)(0.06 - 0.08)/(6 - 5)-0.02 0.12 (6/29/2017)0.08 (4/20/2017)(0.12 - 0.08)/(7 - 5)0.02 0.07 (8/16/2017)0.08 (4/20/2017)(0.07 - 0.08)/(8 - 5)-0.00333333 0.12 (6/29/2017)ND<0.06 (5/22/2017)(0.12 - 0.06)/(7 - 6)0.06 0.07 (8/16/2017)ND<0.06 (5/22/2017)(0.07 - 0.06)/(8 - 6)0.005 0.07 (8/16/2017)0.12 (6/29/2017)(0.07 - 0.12)/(8 - 7)-0.05 Number of Q values = 28 Ordered Q Values n Q 1 -0.07 2 -0.05 3 -0.035 4 -0.0233333 5 -0.02 6 -0.012 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 12 7 -0.01 8 -0.00714286 9 -0.00333333 10 0 11 0 12 0 13 0 14 0.0025 15 0.00333333 16 0.00333333 17 0.004 18 0.005 19 0.005 20 0.005 21 0.01 22 0.014 23 0.015 24 0.0175 25 0.02 26 0.0233333 27 0.03 28 0.06 Sen's Estimator (Median Q) is 0.00291667 Tied Group Value Members 1 0.12 2 2 0.05 3 Time Period Observations 10/24/2016 1 12/1/2016 1 1/4/2017 1 2/16/2017 1 4/20/2017 1 5/22/2017 1 6/29/2017 1 8/16/2017 1 There are 0 time periods with multiple data A = 84 B = 0 C = 6 D = 0 E = 8 F = 0 a = 1176 b = 3024 c = 112 Group Variance = 60.6667 For 90% confidence interval (two-tailed), Z at (1-0.9)/2 = 1.64485 C = 12.8116 M1 = (28 - 12.8116)/2.0 = 7.59422 M2 = (28 + 12.8116)/2.0 + 1 = 21.4058 Lower limit is -0.00714286 = Q(8) Upper limit is 0.01 = Q(21) -0.00714286 < 0 < 0.01 indicating no trend in data. DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 13 Antimony Multi-Well Time-Series Graph Sample DateConcentration (ppb)0 0.05 0.1 0.15 0.2 MW- 8 MW- 9 MW-10 MW-11 MW-12 MW-1710/24/201612/5/20161/16/20172/27/20174/11/20175/23/20177/4/20178/16/2017DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 1 Concentrations (ppb) Parameter: Arsenic Original Data (Not Transformed) Non-Detects Replaced with Detection Limit Total Measurements: 114 Total Non-Detect: 55 Percent Non-Detects: 48.2456% Total Background Measurements: 19 There is 1 background location Loc.Meas.ND Date Conc.Original MW- 8 19 7 (36.8421%)2/18/2008 11 11 8/20/2009 ND<0.17 ND<0.17 8/24/2010 1.3 1.3 2/23/2011 1.4 1.4 8/24/2011 ND<0.1 ND<0.1 2/21/2012 ND<0.1 ND<0.1 8/28/2012 0.19 0.19 2/19/2013 0.2 0.2 8/28/2013 0.26 0.26 2/24/2014 0.45 0.45 8/5/2014 0.23 0.23 2/10/2015 0.4 0.4 8/25/2015 0.14 0.14 2/25/2016 ND<0.66 ND<0.66 8/10/2016 ND<0.66 ND<0.66 2/16/2017 ND<0.66 ND<0.66 8/16/2017 0.7 0.7 2/19/2018 ND<0.07 ND<0.07 8/14/2018 0.26 0.26 There are 5 compliance locations Loc.Meas.ND Date Conc.Original MW- 9 19 10 (52.6316%)2/18/2008 1.2 1.2 8/20/2009 0.5 0.5 8/24/2010 0.3 0.3 2/23/2011 ND<0.04 ND<0.04 8/24/2011 0.52 0.52 2/21/2012 0.32 0.32 8/28/2012 ND<0.13 ND<0.13 2/19/2013 ND<0.13 ND<0.13 8/28/2013 0.34 0.34 2/24/2014 0.75 0.75 8/5/2014 ND<0.1 ND<0.1 2/10/2015 0.28 0.28 8/25/2015 ND<0.14 ND<0.14 2/25/2016 ND<0.66 ND<0.66 8/10/2016 ND<0.66 ND<0.66 2/16/2017 ND<0.66 ND<0.66 8/16/2017 0.11 0.11 2/19/2018 ND<0.07 ND<0.07 8/14/2018 ND<0.03 ND<0.03 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 2 MW-10 19 11 (57.8947%)2/18/2008 3 3 8/20/2009 0.2 0.2 8/24/2010 ND<0.04 ND<0.04 2/23/2011 ND<0.04 ND<0.04 8/24/2011 0.22 0.22 2/21/2012 ND<0.1 ND<0.1 8/28/2012 ND<0.13 ND<0.13 2/19/2013 ND<0.13 ND<0.13 8/28/2013 0.2 0.2 2/24/2014 0.46 0.46 8/5/2014 0.23 0.23 2/10/2015 0.25 0.25 8/25/2015 ND<0.14 ND<0.14 2/25/2016 ND<0.66 ND<0.66 8/10/2016 ND<0.66 ND<0.66 2/16/2017 ND<0.66 ND<0.66 8/16/2017 0.21 0.21 2/19/2018 ND<0.07 ND<0.07 8/14/2018 ND<0.03 ND<0.03 MW-11 19 8 (42.1053%)2/18/2008 1.2 1.2 8/20/2009 0.9 0.9 8/24/2010 ND<0.04 ND<0.04 2/23/2011 0.8 0.8 8/24/2011 0.67 0.67 2/21/2012 ND<0.1 ND<0.1 8/28/2012 1.1 1.1 2/19/2013 ND<0.13 ND<0.13 8/28/2013 0.72 0.72 2/24/2014 1.5 1.5 8/5/2014 0.87 0.87 2/10/2015 0.37 0.37 8/25/2015 ND<0.14 ND<0.14 2/25/2016 1 1 8/10/2016 ND<0.66 ND<0.66 2/16/2017 ND<0.66 ND<0.66 8/16/2017 1 1 2/19/2018 ND<0.07 ND<0.07 8/14/2018 ND<0.03 ND<0.03 MW-12 19 8 (42.1053%)2/18/2008 4.6 4.6 8/20/2009 ND<0.17 ND<0.17 8/24/2010 0.3 0.3 2/23/2011 ND<0.04 ND<0.04 8/24/2011 1.6 1.6 2/21/2012 0.34 0.34 8/28/2012 ND<0.13 ND<0.13 2/19/2013 0.26 0.26 8/28/2013 0.17 0.17 2/24/2014 0.44 0.44 8/5/2014 0.45 0.45 2/10/2015 0.23 0.23 8/25/2015 ND<0.14 ND<0.14 2/25/2016 ND<0.66 ND<0.66 8/10/2016 ND<0.66 ND<0.66 2/16/2017 ND<0.66 ND<0.66 8/16/2017 ND<0.07 ND<0.07 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 3 2/19/2018 0.14 0.14 8/14/2018 0.26 0.26 MW-17 19 11 (57.8947%)2/18/2008 2 2 8/20/2009 ND<0.17 ND<0.17 8/24/2010 ND<0.04 ND<0.04 2/23/2011 ND<0.04 ND<0.04 8/24/2011 0.63 0.63 2/21/2012 0.25 0.25 8/28/2012 ND<0.13 ND<0.13 2/19/2013 0.14 0.14 8/28/2013 0.24 0.24 2/24/2014 0.16 0.16 8/5/2014 0.28 0.28 2/10/2015 0.52 0.52 8/25/2015 ND<0.14 ND<0.14 2/25/2016 ND<0.66 ND<0.66 8/10/2016 ND<0.66 ND<0.66 2/16/2017 ND<0.66 ND<0.66 8/16/2017 ND<0.07 ND<0.07 2/19/2018 ND<0.07 ND<0.07 8/14/2018 ND<0.03 ND<0.03 There are 0 unused locations Loc.Meas.ND Date Conc.Original DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 4 Shapiro-Francia Test of Normality Parameter: Arsenic All Locations Normaltiy Test of Residuals Natural Logarithm Transformation Non-Detects Replaced with Detection Limit Total Number of Measurements = 114 i x(i)m(i)sum(m^2)sum(mx) 1 -2.55748 -2.40892 5.80292 6.16077 2 -2.26979 -2.12007 10.2976 10.9729 3 -2.06786 -1.94314 14.0734 14.991 4 -2.02356 -1.82501 17.404 18.684 5 -1.89627 -1.71688 20.3517 21.9397 6 -1.87357 -1.62576 22.9948 24.9857 7 -1.78018 -1.55477 25.4121 27.7534 8 -1.71018 -1.48328 27.6123 30.2901 9 -1.67201 -1.41865 29.6248 32.6621 10 -1.60858 -1.36581 31.4903 34.8591 11 -1.60858 -1.31058 33.2079 36.9673 12 -1.58589 -1.25908 34.7932 38.9641 13 -1.58589 -1.21073 36.259 40.8841 14 -1.46394 -1.17 37.6279 42.597 15 -1.3535 -1.12639 38.8967 44.1215 16 -1.31533 -1.08482 40.0735 45.5484 17 -1.31533 -1.04939 41.1748 46.9287 18 -1.22056 -1.01104 42.1969 48.1628 19 -1.09114 -0.974114 43.1458 49.2257 20 -1.04897 -0.942375 44.0339 50.2142 21 -1.04897 -0.907769 44.858 51.1664 22 -1.02627 -0.874218 45.6222 52.0636 23 -1.01703 -0.841621 46.3305 52.9195 24 -0.978861 -0.813379 46.9921 53.7157 25 -0.863887 -0.782366 47.6042 54.3916 26 -0.844901 -0.752084 48.1699 55.027 27 -0.784705 -0.725736 48.6965 55.5965 28 -0.770793 -0.696684 49.1819 56.1335 29 -0.770793 -0.668209 49.6284 56.6486 30 -0.768576 -0.643345 50.0423 57.143 31 -0.67348 -0.615839 50.4216 57.5578 32 -0.669596 -0.588793 50.7682 57.952 33 -0.622186 -0.565108 51.0876 58.3036 34 -0.601522 -0.538836 51.3779 58.6278 35 -0.601522 -0.51293 51.641 58.9363 36 -0.576637 -0.487364 51.8786 59.2173 37 -0.576637 -0.464904 52.0947 59.4854 38 -0.527414 -0.439913 52.2882 59.7174 39 -0.482424 -0.415193 52.4606 59.9177 40 -0.429929 -0.393433 52.6154 60.0869 41 -0.407232 -0.369171 52.7517 60.2372 42 -0.407232 -0.345126 52.8708 60.3778 43 -0.359822 -0.323919 52.9757 60.4943 44 -0.359822 -0.300232 53.0659 60.6023 45 -0.355821 -0.276714 53.1424 60.7008 46 -0.355821 -0.253347 53.2066 60.791 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 5 47 -0.333124 -0.232693 53.2608 60.8685 48 -0.274356 -0.209575 53.3047 60.926 49 -0.222289 -0.186567 53.3395 60.9674 50 -0.161665 -0.166199 53.3671 60.9943 51 -0.151754 -0.143367 53.3877 61.0161 52 -0.151754 -0.12061 53.4022 61.0344 53 -0.0451709 -0.100433 53.4123 61.0389 54 -0.00865299 -0.0777834 53.4183 61.0396 55 0.0235512 -0.0551734 53.4214 61.0383 56 0.0235512 -0.0350997 53.4226 61.0375 57 0.0709609 -0.0125328 53.4228 61.0366 58 0.0723414 0.0125328 53.4229 61.0375 59 0.11651 0.0350997 53.4242 61.0416 60 0.118861 0.0551734 53.4272 61.0481 61 0.163313 0.0777834 53.4333 61.0608 62 0.165733 0.100433 53.4433 61.0775 63 0.183176 0.12061 53.4579 61.0996 64 0.188744 0.143367 53.4784 61.1266 65 0.223998 0.166199 53.5061 61.1638 66 0.234726 0.186567 53.5409 61.2076 67 0.246695 0.209575 53.5848 61.2593 68 0.299264 0.232693 53.6389 61.329 69 0.337327 0.253347 53.7031 61.4144 70 0.359889 0.276714 53.7797 61.514 71 0.374339 0.300232 53.8698 61.6264 72 0.396812 0.323919 53.9748 61.7549 73 0.533566 0.345126 54.0939 61.9391 74 0.533566 0.369171 54.2302 62.1361 75 0.548604 0.393433 54.385 62.3519 76 0.571736 0.415193 54.5573 62.5893 77 0.571736 0.439913 54.7509 62.8408 78 0.571736 0.464904 54.967 63.1066 79 0.620577 0.487364 55.2045 63.4091 80 0.630577 0.51293 55.4676 63.7325 81 0.725938 0.538836 55.758 64.1237 82 0.745551 0.565108 56.0773 64.545 83 0.779804 0.588793 56.424 65.0041 84 0.779804 0.615839 56.8032 65.4843 85 0.779804 0.643345 57.2171 65.986 86 0.784772 0.668209 57.6636 66.5104 87 0.809819 0.696684 58.149 67.0746 88 0.843721 0.725736 58.6757 67.6869 89 0.85646 0.752084 59.2413 68.3311 90 0.949081 0.782366 59.8534 69.0736 91 0.949081 0.813379 60.515 69.8456 92 0.956366 0.841621 61.2233 70.6505 93 1.02318 0.874218 61.9876 71.5449 94 1.02318 0.907769 62.8116 72.4737 95 1.02318 0.942375 63.6997 73.438 96 1.04439 0.974114 64.6486 74.4553 97 1.1314 1.01104 65.6708 75.5992 98 1.14826 1.04939 66.772 76.8042 99 1.15102 1.08482 67.9489 78.0528 100 1.19478 1.12639 69.2176 79.3986 101 1.19478 1.17 70.5865 80.7965 102 1.19478 1.21073 72.0524 82.2431 103 1.21747 1.25908 73.6377 83.776 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 6 104 1.21747 1.31058 75.3553 85.3716 105 1.21747 1.36581 77.2207 87.0344 106 1.24962 1.41865 79.2333 88.8072 107 1.32372 1.48328 81.4334 90.7706 108 1.35455 1.55477 83.8507 92.8766 109 1.62102 1.62576 86.4938 95.512 110 1.66532 1.71688 89.4415 98.3712 111 2.30344 1.82501 92.7722 102.575 112 2.72138 1.94314 96.548 107.863 113 2.7316 2.12007 101.043 113.654 114 3.38515 2.40892 106.846 121.809 Data Set Standard Deviation = 1.11707 Numerator = 14837.4 Denominator = 15066 W Statistic = 0.984822 = 14837.4 / 15066 5% Critical value of 0.976 is less than 0.984822 Data is normally distributed at 95% level of significance 1% Critical value of 0.967 is less than 0.984822 Data is normally distributed at 99% level of significance DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 7 Parametric Prediction Interval Analysis Inter-Well Comparison Parameter: Arsenic Natural Logarithm Transformation Non-Detects Replaced with Detection Limit Inter-Well USEPA Formula 99% Comparison Number of comparisons = 5 Future Samples (k) = 5 = lesser of 5 or number of comparions Recent Dates = 1 Background Samples = 19 Background mean = -0.987252 Std Dev = 1.18683 99% confidence t = 2.55238 at 18 degree of freedom Well MW- 9 Date Samples Mean Interval Significant 8/14/2018 1 -3.50656 [0, 2.12067]FALSE Well MW-10 Date Samples Mean Interval Significant 8/14/2018 1 -3.50656 [0, 2.12067]FALSE Well MW-11 Date Samples Mean Interval Significant 8/14/2018 1 -3.50656 [0, 2.12067]FALSE Well MW-12 Date Samples Mean Interval Significant 8/14/2018 1 -1.34707 [0, 2.12067]FALSE Well MW-17 Date Samples Mean Interval Significant 8/14/2018 1 -3.50656 [0, 2.12067]FALSE DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 8 Arsenic Multi-Well Time-Series Graph Sample DateConcentration (ppb)0 5 10 15 20 MW- 8 MW- 9 MW-10 MW-11 MW-12 MW-172/18/20088/18/20092/16/20118/16/20122/14/20148/15/20152/12/20178/14/2018DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 1 Concentrations (ppb) Parameter: Barium Original Data (Not Transformed) Non-Detects Replaced with Detection Limit Total Measurements: 114 Total Non-Detect: 3 Percent Non-Detects: 2.63158% Total Background Measurements: 19 There is 1 background location Loc.Meas.ND Date Conc.Original MW- 8 19 3 (15.7895%)2/18/2008 452 452 8/20/2009 ND<0.04 ND<0.04 8/24/2010 80.9 80.9 2/23/2011 99 99 8/24/2011 ND<0.02 ND<0.02 2/21/2012 ND<0.02 ND<0.02 8/28/2012 60.4 60.4 2/19/2013 56.4 56.4 8/28/2013 60.2 60.2 2/24/2014 83.8 83.8 8/5/2014 83.1 83.1 2/10/2015 87.9 87.9 8/25/2015 63.8 63.8 2/25/2016 97.7 97.7 8/10/2016 84.6 84.6 2/16/2017 44.9 44.9 8/16/2017 90.1 90.1 2/19/2018 49.5 49.5 8/14/2018 76.1 76.1 There are 5 compliance locations Loc.Meas.ND Date Conc.Original MW- 9 19 0 (0%)2/18/2008 218 218 8/20/2009 19.4 19.4 8/24/2010 63.8 63.8 2/23/2011 29.4 29.4 8/24/2011 96.8 96.8 2/21/2012 42.2 42.2 8/28/2012 30.7 30.7 2/19/2013 38.7 38.7 8/28/2013 69.5 69.5 2/24/2014 100 100 8/5/2014 34.3 34.3 2/10/2015 90.4 90.4 8/25/2015 39.6 39.6 2/25/2016 42.8 42.8 8/10/2016 34.9 34.9 2/16/2017 23.5 23.5 8/16/2017 57.2 57.2 2/19/2018 24.5 24.5 8/14/2018 25.5 25.5 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 2 MW-10 19 0 (0%)2/18/2008 260 260 8/20/2009 24.3 24.3 8/24/2010 20.9 20.9 2/23/2011 24.9 24.9 8/24/2011 22.2 22.2 2/21/2012 29.8 29.8 8/28/2012 22.9 22.9 2/19/2013 24.6 24.6 8/28/2013 43.3 43.3 2/24/2014 60.2 60.2 8/5/2014 26.3 26.3 2/10/2015 28.1 28.1 8/25/2015 29.2 29.2 2/25/2016 34.8 34.8 8/10/2016 25 25 2/16/2017 27.2 27.2 8/16/2017 28.9 28.9 2/19/2018 23.8 23.8 8/14/2018 27.6 27.6 MW-11 19 0 (0%)2/18/2008 30.2 30.2 8/20/2009 35.2 35.2 8/24/2010 9.2 9.2 2/23/2011 26.8 26.8 8/24/2011 19.6 19.6 2/21/2012 10.8 10.8 8/28/2012 33.9 33.9 2/19/2013 8.8 8.8 8/28/2013 27.8 27.8 2/24/2014 44.7 44.7 8/5/2014 38.7 38.7 2/10/2015 12.8 12.8 8/25/2015 11.9 11.9 2/25/2016 58.7 58.7 8/10/2016 15.2 15.2 2/16/2017 8.6 8.6 8/16/2017 52.8 52.8 2/19/2018 9.6 9.6 8/14/2018 9.2 9.2 MW-12 19 0 (0%)2/18/2008 702 702 8/20/2009 24.5 24.5 8/24/2010 38 38 2/23/2011 37.4 37.4 8/24/2011 394 394 2/21/2012 109 109 8/28/2012 37.7 37.7 2/19/2013 57 57 8/28/2013 28.8 28.8 2/24/2014 65.3 65.3 8/5/2014 71.5 71.5 2/10/2015 24.2 24.2 8/25/2015 71.7 71.7 2/25/2016 117 117 8/10/2016 30.5 30.5 2/16/2017 31.4 31.4 8/16/2017 23.6 23.6 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 3 2/19/2018 88.5 88.5 8/14/2018 141 141 MW-17 19 0 (0%)2/18/2008 217 217 8/20/2009 88.1 88.1 8/24/2010 53 53 2/23/2011 47.3 47.3 8/24/2011 146 146 2/21/2012 129 129 8/28/2012 40.9 40.9 2/19/2013 37.7 37.7 8/28/2013 43 43 2/24/2014 74.7 74.7 8/5/2014 34.8 34.8 2/10/2015 48.4 48.4 8/25/2015 42.6 42.6 2/25/2016 69 69 8/10/2016 37.7 37.7 2/16/2017 34.1 34.1 8/16/2017 46.1 46.1 2/19/2018 31.6 31.6 8/14/2018 30.4 30.4 There are 0 unused locations Loc.Meas.ND Date Conc.Original DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 4 Wilcoxon Non-Parametric Analysis (Inter-Well) Parameter: Barium Location: MW- 9 Original Data (Not Transformed) Non-Detects Replaced with Detection Limit Total non detects is 3 Non detect rank is 2 Wilcoxon Ranks Location Date Conc.Rank MW- 8 2/18/2008 452 38 8/20/2009 ND<0.04 2 8/24/2010 80.9 26 2/23/2011 99 35 8/24/2011 ND<0.02 2 2/21/2012 ND<0.02 2 8/28/2012 60.4 21 2/19/2013 56.4 18 8/28/2013 60.2 20 2/24/2014 83.8 28 8/5/2014 83.1 27 2/10/2015 87.9 30 8/25/2015 63.8 22 2/25/2016 97.7 34 8/10/2016 84.6 29 2/16/2017 44.9 16 8/16/2017 90.1 31 2/19/2018 49.5 17 8/14/2018 76.1 25 MW- 9 2/18/2008 218 37 8/20/2009 19.4 4 8/24/2010 63.8 23 2/23/2011 29.4 8 8/24/2011 96.8 33 2/21/2012 42.2 14 8/28/2012 30.7 9 2/19/2013 38.7 12 8/28/2013 69.5 24 2/24/2014 100 36 8/5/2014 34.3 10 2/10/2015 90.4 32 8/25/2015 39.6 13 2/25/2016 42.8 15 8/10/2016 34.9 11 2/16/2017 23.5 5 8/16/2017 57.2 19 2/19/2018 24.5 6 8/14/2018 25.5 7 The Wilcoxon Statistic is 128 The Expected value is is 180.5 The Standard Deviation is 34.2527 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 5 The Z Score is -1.54732 The Standard Deviation adjusted for ties is 34.2452 The Z Score adjusted for ties is -1.54766 -1.54732 < 2.326 indicating no contamination at 1% significance level -1.54766 < 2.326 indicating no contamination at 1% significance level when adjusted for ties DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 6 Wilcoxon Non-Parametric Analysis (Inter-Well) Parameter: Barium Location: MW-10 Original Data (Not Transformed) Non-Detects Replaced with Detection Limit Total non detects is 3 Non detect rank is 2 Wilcoxon Ranks Location Date Conc.Rank MW- 8 2/18/2008 452 38 8/20/2009 ND<0.04 2 8/24/2010 80.9 29 2/23/2011 99 36 8/24/2011 ND<0.02 2 2/21/2012 ND<0.02 2 8/28/2012 60.4 26 2/19/2013 56.4 23 8/28/2013 60.2 24 2/24/2014 83.8 31 8/5/2014 83.1 30 2/10/2015 87.9 33 8/25/2015 63.8 27 2/25/2016 97.7 35 8/10/2016 84.6 32 2/16/2017 44.9 21 8/16/2017 90.1 34 2/19/2018 49.5 22 8/14/2018 76.1 28 MW-10 2/18/2008 260 37 8/20/2009 24.3 8 8/24/2010 20.9 4 2/23/2011 24.9 10 8/24/2011 22.2 5 2/21/2012 29.8 18 8/28/2012 22.9 6 2/19/2013 24.6 9 8/28/2013 43.3 20 2/24/2014 60.2 25 8/5/2014 26.3 12 2/10/2015 28.1 15 8/25/2015 29.2 17 2/25/2016 34.8 19 8/10/2016 25 11 2/16/2017 27.2 13 8/16/2017 28.9 16 2/19/2018 23.8 7 8/14/2018 27.6 14 The Wilcoxon Statistic is 76 The Expected value is is 180.5 The Standard Deviation is 34.2527 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 7 The Z Score is -3.06545 The Standard Deviation adjusted for ties is 34.2452 The Z Score adjusted for ties is -3.06612 -3.06545 < 2.326 indicating no contamination at 1% significance level -3.06612 < 2.326 indicating no contamination at 1% significance level when adjusted for ties DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 8 Wilcoxon Non-Parametric Analysis (Inter-Well) Parameter: Barium Location: MW-11 Original Data (Not Transformed) Non-Detects Replaced with Detection Limit Total non detects is 3 Non detect rank is 2 Wilcoxon Ranks Location Date Conc.Rank MW- 8 2/18/2008 452 38 8/20/2009 ND<0.04 2 8/24/2010 80.9 30 2/23/2011 99 37 8/24/2011 ND<0.02 2 2/21/2012 ND<0.02 2 8/28/2012 60.4 27 2/19/2013 56.4 24 8/28/2013 60.2 26 2/24/2014 83.8 32 8/5/2014 83.1 31 2/10/2015 87.9 34 8/25/2015 63.8 28 2/25/2016 97.7 36 8/10/2016 84.6 33 2/16/2017 44.9 21 8/16/2017 90.1 35 2/19/2018 49.5 22 8/14/2018 76.1 29 MW-11 2/18/2008 30.2 16 8/20/2009 35.2 18 8/24/2010 9.2 6 2/23/2011 26.8 14 8/24/2011 19.6 13 2/21/2012 10.8 9 8/28/2012 33.9 17 2/19/2013 8.8 5 8/28/2013 27.8 15 2/24/2014 44.7 20 8/5/2014 38.7 19 2/10/2015 12.8 11 8/25/2015 11.9 10 2/25/2016 58.7 25 8/10/2016 15.2 12 2/16/2017 8.6 4 8/16/2017 52.8 23 2/19/2018 9.6 8 8/14/2018 9.2 7 The Wilcoxon Statistic is 62 The Expected value is is 180.5 The Standard Deviation is 34.2527 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 9 The Z Score is -3.47417 The Standard Deviation adjusted for ties is 34.2452 The Z Score adjusted for ties is -3.47494 -3.47417 < 2.326 indicating no contamination at 1% significance level -3.47494 < 2.326 indicating no contamination at 1% significance level when adjusted for ties DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 10 Wilcoxon Non-Parametric Analysis (Inter-Well) Parameter: Barium Location: MW-12 Original Data (Not Transformed) Non-Detects Replaced with Detection Limit Total non detects is 3 Non detect rank is 2 Wilcoxon Ranks Location Date Conc.Rank MW- 8 2/18/2008 452 37 8/20/2009 ND<0.04 2 8/24/2010 80.9 24 2/23/2011 99 32 8/24/2011 ND<0.02 2 2/21/2012 ND<0.02 2 8/28/2012 60.4 18 2/19/2013 56.4 15 8/28/2013 60.2 17 2/24/2014 83.8 26 8/5/2014 83.1 25 2/10/2015 87.9 28 8/25/2015 63.8 19 2/25/2016 97.7 31 8/10/2016 84.6 27 2/16/2017 44.9 13 8/16/2017 90.1 30 2/19/2018 49.5 14 8/14/2018 76.1 23 MW-12 2/18/2008 702 38 8/20/2009 24.5 6 8/24/2010 38 12 2/23/2011 37.4 10 8/24/2011 394 36 2/21/2012 109 33 8/28/2012 37.7 11 2/19/2013 57 16 8/28/2013 28.8 7 2/24/2014 65.3 20 8/5/2014 71.5 21 2/10/2015 24.2 5 8/25/2015 71.7 22 2/25/2016 117 34 8/10/2016 30.5 8 2/16/2017 31.4 9 8/16/2017 23.6 4 2/19/2018 88.5 29 8/14/2018 141 35 The Wilcoxon Statistic is 166 The Expected value is is 180.5 The Standard Deviation is 34.2527 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 11 The Z Score is -0.437921 The Standard Deviation adjusted for ties is 34.2452 The Z Score adjusted for ties is -0.438017 -0.437921 < 2.326 indicating no contamination at 1% significance level -0.438017 < 2.326 indicating no contamination at 1% significance level when adjusted for ties DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 12 Wilcoxon Non-Parametric Analysis (Inter-Well) Parameter: Barium Location: MW-17 Original Data (Not Transformed) Non-Detects Replaced with Detection Limit Total non detects is 3 Non detect rank is 2 Wilcoxon Ranks Location Date Conc.Rank MW- 8 2/18/2008 452 38 8/20/2009 ND<0.04 2 8/24/2010 80.9 26 2/23/2011 99 34 8/24/2011 ND<0.02 2 2/21/2012 ND<0.02 2 8/28/2012 60.4 21 2/19/2013 56.4 19 8/28/2013 60.2 20 2/24/2014 83.8 28 8/5/2014 83.1 27 2/10/2015 87.9 30 8/25/2015 63.8 22 2/25/2016 97.7 33 8/10/2016 84.6 29 2/16/2017 44.9 13 8/16/2017 90.1 32 2/19/2018 49.5 17 8/14/2018 76.1 25 MW-17 2/18/2008 217 37 8/20/2009 88.1 31 8/24/2010 53 18 2/23/2011 47.3 15 8/24/2011 146 36 2/21/2012 129 35 8/28/2012 40.9 10 2/19/2013 37.7 8 8/28/2013 43 12 2/24/2014 74.7 24 8/5/2014 34.8 7 2/10/2015 48.4 16 8/25/2015 42.6 11 2/25/2016 69 23 8/10/2016 37.7 9 2/16/2017 34.1 6 8/16/2017 46.1 14 2/19/2018 31.6 5 8/14/2018 30.4 4 The Wilcoxon Statistic is 131 The Expected value is is 180.5 The Standard Deviation is 34.2527 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 13 The Z Score is -1.45974 The Standard Deviation adjusted for ties is 34.2452 The Z Score adjusted for ties is -1.46006 -1.45974 < 2.326 indicating no contamination at 1% significance level -1.46006 < 2.326 indicating no contamination at 1% significance level when adjusted for ties DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 13 Barium Multi-Well Time-Series Graph Sample DateConcentration (ppb)0 100 200 300 400 500 600 700 800 MW- 8 MW- 9 MW-10 MW-11 MW-12 MW-172/18/20088/18/20092/16/20118/16/20122/14/20148/15/20152/12/20178/14/2018DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 1 Concentrations (ppb) Parameter: Beryllium Original Data (Not Transformed) Non-Detects Replaced with Detection Limit Total Measurements: 48 Total Non-Detect: 4 Percent Non-Detects: 8.33333% Total Background Measurements: 8 There is 1 background location Loc.Meas.ND Date Conc.Original MW- 8 8 0 (0%)10/24/2016 0.3 0.3 12/1/2016 0.1 0.1 1/4/2017 0.12 0.12 2/16/2017 0.09 0.09 4/20/2017 0.31 0.31 5/22/2017 0.34 0.34 6/29/2017 0.45 0.45 8/16/2017 0.22 0.22 There are 5 compliance locations Loc.Meas.ND Date Conc.Original MW- 9 8 0 (0%)10/24/2016 3 3 12/1/2016 0.48 0.48 1/4/2017 0.45 0.45 2/16/2017 0.35 0.35 4/20/2017 0.4 0.4 5/22/2017 2 2 6/29/2017 5 5 8/16/2017 6 6 MW-10 8 0 (0%)10/24/2016 0.7 0.7 12/1/2016 0.12 0.12 1/4/2017 0.15 0.15 2/16/2017 0.09 0.09 4/20/2017 0.13 0.13 5/22/2017 0.56 0.56 6/29/2017 0.31 0.31 8/16/2017 0.97 0.97 MW-11 8 4 (50%)10/24/2016 0.59 0.59 12/1/2016 ND<0.04 ND<0.04 1/4/2017 ND<0.04 ND<0.04 2/16/2017 ND<0.04 ND<0.04 4/20/2017 ND<0.07 ND<0.07 5/22/2017 0.11 0.11 6/29/2017 2 2 8/16/2017 2 2 MW-12 8 0 (0%)10/24/2016 0.14 0.14 12/1/2016 0.7 0.7 1/4/2017 0.21 0.21 2/16/2017 2 2 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 2 4/20/2017 0.23 0.23 5/22/2017 0.86 0.86 6/29/2017 1 1 8/16/2017 0.44 0.44 MW-17 8 0 (0%)10/24/2016 1 1 12/1/2016 0.26 0.26 1/4/2017 0.27 0.27 2/16/2017 0.19 0.19 4/20/2017 0.27 0.27 5/22/2017 0.38 0.38 6/29/2017 2 2 8/16/2017 1 1 There are 0 unused locations Loc.Meas.ND Date Conc.Original DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 3 Shapiro-Wilks Test of Normality Parameter: Beryllium All Locations Normality Test of Residuals Natural Logarithm Transformation Non-Detects Replaced with Detection Limit K = 24 for 48 measurements i x(i)x(n-i+1)x(n-1+1)-x(i)a(n-i+1)b(i) 1 -1.51081 2.40121 3.91202 0.3789 1.48227 2 -1.51081 2.40121 3.91202 0.2604 1.01869 3 -1.51081 1.57996 3.09078 0.2281 0.705006 4 -1.26214 1.43076 2.6929 0.2045 0.550699 5 -1.26162 1.39764 2.65926 0.1855 0.493293 6 -1.12809 1.39712 2.5252 0.1693 0.427517 7 -1.08248 1.295 2.37749 0.1551 0.368748 8 -1.0103 1.18043 2.19073 0.1423 0.311741 9 -0.951197 0.968786 1.91998 0.1306 0.25075 10 -0.945765 0.886816 1.83258 0.1197 0.21936 11 -0.923118 0.776167 1.69928 0.1095 0.186072 12 -0.856677 0.745642 1.60232 0.0998 0.159911 13 -0.833271 0.737614 1.57088 0.0906 0.142322 14 -0.794803 0.737614 1.53242 0.0817 0.125198 15 -0.765705 0.703971 1.46968 0.0731 0.107433 16 -0.727911 0.553148 1.28106 0.0648 0.0830126 17 -0.71476 0.495865 1.21062 0.0568 0.0687635 18 -0.60946 0.481351 1.09081 0.0489 0.0533407 19 -0.57172 0.403491 0.975211 0.0411 0.0400812 20 -0.57172 0.370702 0.942421 0.0335 0.0315711 21 -0.571659 0.347296 0.918955 0.0259 0.0238009 22 -0.545589 0.154278 0.699867 0.0185 0.0129475 23 -0.499212 0.0605467 0.559759 0.0111 0.00621332 24 -0.22997 -0.11701 0.112961 0.0037 0.000417955 25 -0.11701 -0.22997 -0.112961 26 0.0605467 -0.499212 -0.559759 27 0.154278 -0.545589 -0.699867 28 0.347296 -0.571659 -0.918955 29 0.370702 -0.57172 -0.942421 30 0.403491 -0.57172 -0.975211 31 0.481351 -0.60946 -1.09081 32 0.495865 -0.71476 -1.21062 33 0.553148 -0.727911 -1.28106 34 0.703971 -0.765705 -1.46968 35 0.737614 -0.794803 -1.53242 36 0.737614 -0.833271 -1.57088 37 0.745642 -0.856677 -1.60232 38 0.776167 -0.923118 -1.69928 39 0.886816 -0.945765 -1.83258 40 0.968786 -0.951197 -1.91998 41 1.18043 -1.0103 -2.19073 42 1.295 -1.08248 -2.37749 43 1.39712 -1.12809 -2.5252 44 1.39764 -1.26162 -2.65926 45 1.43076 -1.26214 -2.6929 46 1.57996 -1.51081 -3.09078 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 4 47 2.40121 -1.51081 -3.91202 48 2.40121 -1.51081 -3.91202 Sum of b values = 6.86916 Sample Standard Deviation = 1.03709 W Statistic = 0.93342 5% Critical value of 0.947 exceeds 0.93342 Evidence of non-normality at 95% level of significance 1% Critical value of 0.929 is less than 0.93342 Data is normally distributed at 99% level of significance DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 5 Parametric Prediction Interval Analysis Inter-Well Comparison Parameter: Beryllium Natural Logarithm Transformation Non-Detects Replaced with Detection Limit Inter-Well USEPA Formula 99% Comparison Number of comparisons = 5 Future Samples (k) = 5 = lesser of 5 or number of comparions Recent Dates = 1 Background Samples = 8 Background mean = -1.57467 Std Dev = 0.61807 99% confidence t = 2.99795 at 7 degree of freedom Well MW- 9 Date Samples Mean Interval Significant 8/16/2017 1 1.79176 [0, 0.390666]TRUE Well MW-10 Date Samples Mean Interval Significant 8/16/2017 1 -0.0304592 [0, 0.390666]FALSE Well MW-11 Date Samples Mean Interval Significant 8/16/2017 1 0.693147 [0, 0.390666]TRUE Well MW-12 Date Samples Mean Interval Significant 8/16/2017 1 -0.820981 [0, 0.390666]FALSE Well MW-17 Date Samples Mean Interval Significant 8/16/2017 1 0 [0, 0.390666]FALSE DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 6 Sen's Slope Analysis Parameter: Beryllium Location: MW- 9 Original Data (Not Transformed) Non-Detects Replaced with Detection Limit 90% Confidence Level Xj Xk (Xj - Xk)/(j-k)Q 0.48 (12/1/2016)3 (10/24/2016)(0.48 - 3)/(2 - 1)-2.52 0.45 (1/4/2017)3 (10/24/2016)(0.45 - 3)/(3 - 1)-1.275 0.35 (2/16/2017)3 (10/24/2016)(0.35 - 3)/(4 - 1)-0.883333 0.4 (4/20/2017)3 (10/24/2016)(0.4 - 3)/(5 - 1)-0.65 2 (5/22/2017)3 (10/24/2016)(2 - 3)/(6 - 1)-0.2 5 (6/29/2017)3 (10/24/2016)(5 - 3)/(7 - 1)0.333333 6 (8/16/2017)3 (10/24/2016)(6 - 3)/(8 - 1)0.428571 0.45 (1/4/2017)0.48 (12/1/2016)(0.45 - 0.48)/(3 - 2)-0.03 0.35 (2/16/2017)0.48 (12/1/2016)(0.35 - 0.48)/(4 - 2)-0.065 0.4 (4/20/2017)0.48 (12/1/2016)(0.4 - 0.48)/(5 - 2)-0.0266667 2 (5/22/2017)0.48 (12/1/2016)(2 - 0.48)/(6 - 2)0.38 5 (6/29/2017)0.48 (12/1/2016)(5 - 0.48)/(7 - 2)0.904 6 (8/16/2017)0.48 (12/1/2016)(6 - 0.48)/(8 - 2)0.92 0.35 (2/16/2017)0.45 (1/4/2017)(0.35 - 0.45)/(4 - 3)-0.1 0.4 (4/20/2017)0.45 (1/4/2017)(0.4 - 0.45)/(5 - 3)-0.025 2 (5/22/2017)0.45 (1/4/2017)(2 - 0.45)/(6 - 3)0.516667 5 (6/29/2017)0.45 (1/4/2017)(5 - 0.45)/(7 - 3)1.1375 6 (8/16/2017)0.45 (1/4/2017)(6 - 0.45)/(8 - 3)1.11 0.4 (4/20/2017)0.35 (2/16/2017)(0.4 - 0.35)/(5 - 4)0.05 2 (5/22/2017)0.35 (2/16/2017)(2 - 0.35)/(6 - 4)0.825 5 (6/29/2017)0.35 (2/16/2017)(5 - 0.35)/(7 - 4)1.55 6 (8/16/2017)0.35 (2/16/2017)(6 - 0.35)/(8 - 4)1.4125 2 (5/22/2017)0.4 (4/20/2017)(2 - 0.4)/(6 - 5)1.6 5 (6/29/2017)0.4 (4/20/2017)(5 - 0.4)/(7 - 5)2.3 6 (8/16/2017)0.4 (4/20/2017)(6 - 0.4)/(8 - 5)1.86667 5 (6/29/2017)2 (5/22/2017)(5 - 2)/(7 - 6)3 6 (8/16/2017)2 (5/22/2017)(6 - 2)/(8 - 6)2 6 (8/16/2017)5 (6/29/2017)(6 - 5)/(8 - 7)1 Number of Q values = 28 Ordered Q Values n Q 1 -2.52 2 -1.275 3 -0.883333 4 -0.65 5 -0.2 6 -0.1 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 7 7 -0.065 8 -0.03 9 -0.0266667 10 -0.025 11 0.05 12 0.333333 13 0.38 14 0.428571 15 0.516667 16 0.825 17 0.904 18 0.92 19 1 20 1.11 21 1.1375 22 1.4125 23 1.55 24 1.6 25 1.86667 26 2 27 2.3 28 3 Sen's Estimator (Median Q) is 0.472619 Time Period Observations 10/24/2016 1 12/1/2016 1 1/4/2017 1 2/16/2017 1 4/20/2017 1 5/22/2017 1 6/29/2017 1 8/16/2017 1 There are 0 time periods with multiple data A = 0 B = 0 C = 0 D = 0 E = 0 F = 0 a = 1176 b = 3024 c = 112 Group Variance = 65.3333 For 90% confidence interval (two-tailed), Z at (1-0.9)/2 = 1.64485 C = 13.2952 M1 = (28 - 13.2952)/2.0 = 7.35241 M2 = (28 + 13.2952)/2.0 + 1 = 21.6476 Lower limit is -0.065 = Q(7) Upper limit is 1.4125 = Q(22) -0.065 < 0 < 1.4125 indicating no trend in data. DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 8 Sen's Slope Analysis Parameter: Beryllium Location: MW-11 Original Data (Not Transformed) Non-Detects Replaced with Detection Limit 90% Confidence Level Xj Xk (Xj - Xk)/(j-k)Q ND<0.04 (12/1/2016)0.59 (10/24/2016)(0.04 - 0.59)/(2 - 1)-0.55 ND<0.04 (1/4/2017)0.59 (10/24/2016)(0.04 - 0.59)/(3 - 1)-0.275 ND<0.04 (2/16/2017)0.59 (10/24/2016)(0.04 - 0.59)/(4 - 1)-0.183333 ND<0.07 (4/20/2017)0.59 (10/24/2016)(0.07 - 0.59)/(5 - 1)-0.13 0.11 (5/22/2017)0.59 (10/24/2016)(0.11 - 0.59)/(6 - 1)-0.096 2 (6/29/2017)0.59 (10/24/2016)(2 - 0.59)/(7 - 1)0.235 2 (8/16/2017)0.59 (10/24/2016)(2 - 0.59)/(8 - 1)0.201429 ND<0.04 (1/4/2017)ND<0.04 (12/1/2016)(0.04 - 0.04)/(3 - 2)0 ND<0.04 (2/16/2017)ND<0.04 (12/1/2016)(0.04 - 0.04)/(4 - 2)0 ND<0.07 (4/20/2017)ND<0.04 (12/1/2016)(0.07 - 0.04)/(5 - 2)0.01 0.11 (5/22/2017)ND<0.04 (12/1/2016)(0.11 - 0.04)/(6 - 2)0.0175 2 (6/29/2017)ND<0.04 (12/1/2016)(2 - 0.04)/(7 - 2)0.392 2 (8/16/2017)ND<0.04 (12/1/2016)(2 - 0.04)/(8 - 2)0.326667 ND<0.04 (2/16/2017)ND<0.04 (1/4/2017)(0.04 - 0.04)/(4 - 3)0 ND<0.07 (4/20/2017)ND<0.04 (1/4/2017)(0.07 - 0.04)/(5 - 3)0.015 0.11 (5/22/2017)ND<0.04 (1/4/2017)(0.11 - 0.04)/(6 - 3)0.0233333 2 (6/29/2017)ND<0.04 (1/4/2017)(2 - 0.04)/(7 - 3)0.49 2 (8/16/2017)ND<0.04 (1/4/2017)(2 - 0.04)/(8 - 3)0.392 ND<0.07 (4/20/2017)ND<0.04 (2/16/2017)(0.07 - 0.04)/(5 - 4)0.03 0.11 (5/22/2017)ND<0.04 (2/16/2017)(0.11 - 0.04)/(6 - 4)0.035 2 (6/29/2017)ND<0.04 (2/16/2017)(2 - 0.04)/(7 - 4)0.653333 2 (8/16/2017)ND<0.04 (2/16/2017)(2 - 0.04)/(8 - 4)0.49 0.11 (5/22/2017)ND<0.07 (4/20/2017)(0.11 - 0.07)/(6 - 5)0.04 2 (6/29/2017)ND<0.07 (4/20/2017)(2 - 0.07)/(7 - 5)0.965 2 (8/16/2017)ND<0.07 (4/20/2017)(2 - 0.07)/(8 - 5)0.643333 2 (6/29/2017)0.11 (5/22/2017)(2 - 0.11)/(7 - 6)1.89 2 (8/16/2017)0.11 (5/22/2017)(2 - 0.11)/(8 - 6)0.945 2 (8/16/2017)2 (6/29/2017)(2 - 2)/(8 - 7)0 Number of Q values = 28 Ordered Q Values n Q 1 -0.55 2 -0.275 3 -0.183333 4 -0.13 5 -0.096 6 0 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 9 7 0 8 0 9 0 10 0.01 11 0.015 12 0.0175 13 0.0233333 14 0.03 15 0.035 16 0.04 17 0.201429 18 0.235 19 0.326667 20 0.392 21 0.392 22 0.49 23 0.49 24 0.643333 25 0.653333 26 0.945 27 0.965 28 1.89 Sen's Estimator (Median Q) is 0.0325 Tied Group Value Members 1 0.04 3 2 2 2 Time Period Observations 10/24/2016 1 12/1/2016 1 1/4/2017 1 2/16/2017 1 4/20/2017 1 5/22/2017 1 6/29/2017 1 8/16/2017 1 There are 0 time periods with multiple data A = 84 B = 0 C = 6 D = 0 E = 8 F = 0 a = 1176 b = 3024 c = 112 Group Variance = 60.6667 For 90% confidence interval (two-tailed), Z at (1-0.9)/2 = 1.64485 C = 12.8116 M1 = (28 - 12.8116)/2.0 = 7.59422 M2 = (28 + 12.8116)/2.0 + 1 = 21.4058 Lower limit is 0 = Q(8) Upper limit is 0.392 = Q(21) 0 < 0 < 0.392 indicating no trend in data. DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 10 Beryllium Multi-Well Time-Series Graph Sample DateConcentration (ppb)0 1 2 3 4 5 6 MW- 8 MW- 9 MW-10 MW-11 MW-12 MW-1710/24/201612/5/20161/16/20172/27/20174/11/20175/23/20177/4/20178/16/2017DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 1 Concentrations (ppb) Parameter: Cadmium Original Data (Not Transformed) Non-Detects Replaced with Detection Limit Total Measurements: 114 Total Non-Detect: 7 Percent Non-Detects: 6.14035% Total Background Measurements: 19 There is 1 background location Loc.Meas.ND Date Conc.Original MW- 8 19 3 (15.7895%)2/18/2008 1.6 1.6 8/20/2009 ND<0.04 ND<0.04 8/24/2010 1 1 2/23/2011 0.5 0.5 8/24/2011 ND<0.02 ND<0.02 2/21/2012 ND<0.02 ND<0.02 8/28/2012 0.1 0.1 2/19/2013 0.15 0.15 8/28/2013 0.2 0.2 2/24/2014 0.22 0.22 8/5/2014 0.17 0.17 2/10/2015 0.22 0.22 8/25/2015 0.16 0.16 2/25/2016 0.25 0.25 8/10/2016 0.15 0.15 2/16/2017 0.15 0.15 8/16/2017 0.32 0.32 2/19/2018 0.14 0.14 8/14/2018 0.19 0.19 There are 5 compliance locations Loc.Meas.ND Date Conc.Original MW- 9 19 1 (5.26316%)2/18/2008 0.5 0.5 8/20/2009 0.1 0.1 8/24/2010 0.2 0.2 2/23/2011 0.1 0.1 8/24/2011 0.29 0.29 2/21/2012 0.13 0.13 8/28/2012 0.15 0.15 2/19/2013 0.1 0.1 8/28/2013 1 1 2/24/2014 0.44 0.44 8/5/2014 0.09 0.09 2/10/2015 0.26 0.26 8/25/2015 0.15 0.15 2/25/2016 0.12 0.12 8/10/2016 0.13 0.13 2/16/2017 ND<0.05 ND<0.05 8/16/2017 1 1 2/19/2018 1 1 8/14/2018 0.26 0.26 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 2 MW-10 19 2 (10.5263%)2/18/2008 1.3 1.3 8/20/2009 0.1 0.1 8/24/2010 ND<0.02 ND<0.02 2/23/2011 0.1 0.1 8/24/2011 0.07 0.07 2/21/2012 0.43 0.43 8/28/2012 0.68 0.68 2/19/2013 0.03 0.03 8/28/2013 0.44 0.44 2/24/2014 0.56 0.56 8/5/2014 0.15 0.15 2/10/2015 0.17 0.17 8/25/2015 0.07 0.07 2/25/2016 0.12 0.12 8/10/2016 0.23 0.23 2/16/2017 ND<0.05 ND<0.05 8/16/2017 0.44 0.44 2/19/2018 1 1 8/14/2018 0.07 0.07 MW-11 19 1 (5.26316%)2/18/2008 0.1 0.1 8/20/2009 0.1 0.1 8/24/2010 0.1 0.1 2/23/2011 0.1 0.1 8/24/2011 0.12 0.12 2/21/2012 0.06 0.06 8/28/2012 0.11 0.11 2/19/2013 0.03 0.03 8/28/2013 0.09 0.09 2/24/2014 1 1 8/5/2014 0.15 0.15 2/10/2015 0.29 0.29 8/25/2015 0.06 0.06 2/25/2016 0.15 0.15 8/10/2016 0.12 0.12 2/16/2017 ND<0.05 ND<0.05 8/16/2017 0.72 0.72 2/19/2018 0.42 0.42 8/14/2018 0.03 0.03 MW-12 19 0 (0%)2/18/2008 1.7 1.7 8/20/2009 0.1 0.1 8/24/2010 0.2 0.2 2/23/2011 0.1 0.1 8/24/2011 0.99 0.99 2/21/2012 0.32 0.32 8/28/2012 0.11 0.11 2/19/2013 0.27 0.27 8/28/2013 0.17 0.17 2/24/2014 0.48 0.48 8/5/2014 0.2 0.2 2/10/2015 0.08 0.08 8/25/2015 0.16 0.16 2/25/2016 0.38 0.38 8/10/2016 0.1 0.1 2/16/2017 0.16 0.16 8/16/2017 0.1 0.1 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 3 2/19/2018 0.32 0.32 8/14/2018 0.54 0.54 MW-17 19 0 (0%)2/18/2008 0.6 0.6 8/20/2009 1 1 8/24/2010 0.2 0.2 2/23/2011 0.1 0.1 8/24/2011 0.52 0.52 2/21/2012 0.32 0.32 8/28/2012 0.14 0.14 2/19/2013 0.09 0.09 8/28/2013 0.17 0.17 2/24/2014 0.29 0.29 8/5/2014 1 1 2/10/2015 0.66 0.66 8/25/2015 0.12 0.12 2/25/2016 0.22 0.22 8/10/2016 0.1 0.1 2/16/2017 0.089 0.089 8/16/2017 0.39 0.39 2/19/2018 1 1 8/14/2018 0.2 0.2 There are 0 unused locations Loc.Meas.ND Date Conc.Original DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 4 Shapiro-Francia Test of Normality Parameter: Cadmium All Locations Normaltiy Test of Residuals Natural Logarithm Transformation Non-Detects Replaced with Detection Limit Total Number of Measurements = 114 i x(i)m(i)sum(m^2)sum(mx) 1 -2.15174 -2.40892 5.80292 5.18338 2 -2.14072 -2.12007 10.2976 9.72185 3 -2.14072 -1.94314 14.0734 13.8816 4 -1.74628 -1.82501 17.404 17.0685 5 -1.45037 -1.71688 20.3517 19.5586 6 -1.44757 -1.62576 22.9948 21.912 7 -1.40499 -1.55477 25.4121 24.0965 8 -1.40499 -1.48328 27.6123 26.1805 9 -1.23545 -1.41865 29.6248 27.9331 10 -1.10739 -1.36581 31.4903 29.4456 11 -1.09622 -1.31058 33.2079 30.8823 12 -1.05285 -1.25908 34.7932 32.2079 13 -0.990861 -1.21073 36.259 33.4076 14 -0.990861 -1.17 37.6279 34.5669 15 -0.89898 -1.12639 38.8967 35.5795 16 -0.89898 -1.08482 40.0735 36.5547 17 -0.89898 -1.04939 41.1748 37.4981 18 -0.89416 -1.01104 42.1969 38.4021 19 -0.862579 -0.974114 43.1458 39.2424 20 -0.829706 -0.942375 44.0339 40.0243 21 -0.829706 -0.907769 44.858 40.7775 22 -0.829706 -0.874218 45.6222 41.5028 23 -0.829706 -0.841621 46.3305 42.2011 24 -0.80854 -0.813379 46.9921 42.8588 25 -0.757218 -0.782366 47.6042 43.4512 26 -0.757218 -0.752084 48.1699 44.0207 27 -0.757218 -0.725736 48.6965 44.5702 28 -0.734396 -0.696684 49.1819 45.0819 29 -0.711838 -0.668209 49.6284 45.5575 30 -0.711838 -0.643345 50.0423 46.0155 31 -0.654389 -0.615839 50.4216 46.4185 32 -0.574897 -0.588793 50.7682 46.757 33 -0.542305 -0.565108 51.0876 47.0634 34 -0.542305 -0.538836 51.3779 47.3556 35 -0.531279 -0.51293 51.641 47.6281 36 -0.494854 -0.487364 51.8786 47.8693 37 -0.494854 -0.464904 52.0947 48.0994 38 -0.460233 -0.439913 52.2882 48.3018 39 -0.359983 -0.415193 52.4606 48.4513 40 -0.359702 -0.393433 52.6154 48.5928 41 -0.359702 -0.369171 52.7517 48.7256 42 -0.351753 -0.345126 52.8708 48.847 43 -0.351753 -0.323919 52.9757 48.961 44 -0.306373 -0.300232 53.0659 49.0529 45 -0.299078 -0.276714 53.1424 49.1357 46 -0.297714 -0.253347 53.2066 49.2111 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 5 47 -0.297714 -0.232693 53.2608 49.2804 48 -0.202404 -0.209575 53.3047 49.3228 49 -0.201013 -0.186567 53.3395 49.3603 50 -0.201013 -0.166199 53.3671 49.3937 51 -0.201013 -0.143367 53.3877 49.4225 52 -0.201013 -0.12061 53.4022 49.4468 53 -0.194807 -0.100433 53.4123 49.4664 54 -0.13684 -0.0777834 53.4183 49.477 55 -0.136559 -0.0551734 53.4214 49.4845 56 -0.136559 -0.0350997 53.4226 49.4893 57 -0.125814 -0.0125328 53.4228 49.4909 58 -0.125814 0.0125328 53.4229 49.4893 59 -0.125814 0.0350997 53.4242 49.4849 60 -0.105702 0.0551734 53.4272 49.4791 61 -0.0640713 0.0777834 53.4333 49.4741 62 -0.0612754 0.100433 53.4433 49.4679 63 -0.0186911 0.12061 53.4579 49.4657 64 -0.0186911 0.143367 53.4784 49.463 65 -0.0116764 0.166199 53.5061 49.4611 66 -0.000650798 0.186567 53.5409 49.4609 67 0.0738497 0.209575 53.5848 49.4764 68 0.110575 0.232693 53.6389 49.5022 69 0.161868 0.253347 53.7031 49.5432 70 0.163546 0.276714 53.7797 49.5884 71 0.17229 0.300232 53.8698 49.6401 72 0.198293 0.323919 53.9748 49.7044 73 0.198293 0.345126 54.0939 49.7728 74 0.204452 0.369171 54.2302 49.8483 75 0.204452 0.393433 54.385 49.9287 76 0.257178 0.415193 54.5573 50.0355 77 0.257178 0.439913 54.7509 50.1486 78 0.290604 0.464904 54.967 50.2837 79 0.307492 0.487364 55.2045 50.4336 80 0.333445 0.51293 55.4676 50.6046 81 0.333445 0.538836 55.758 50.7843 82 0.370115 0.565108 56.0773 50.9935 83 0.385012 0.588793 56.424 51.2202 84 0.505295 0.615839 56.8032 51.5313 85 0.631872 0.643345 57.2171 51.9379 86 0.657798 0.668209 57.6636 52.3774 87 0.724386 0.696684 58.149 52.8821 88 0.73891 0.725736 58.6757 53.4183 89 0.800898 0.752084 59.2413 54.0207 90 0.852219 0.782366 59.8534 54.6874 91 0.856693 0.813379 60.515 55.3842 92 0.863698 0.841621 61.2233 56.1111 93 0.896209 0.874218 61.9876 56.8946 94 0.91631 0.907769 62.8116 57.7264 95 0.9393 0.942375 63.6997 58.6116 96 0.9393 0.974114 64.6486 59.5266 97 1.07816 1.01104 65.6708 60.6166 98 1.18046 1.04939 66.772 61.8554 99 1.23407 1.08482 67.9489 63.1941 100 1.31172 1.12639 69.2176 64.6717 101 1.31172 1.17 70.5865 66.2064 102 1.31172 1.21073 72.0524 67.7945 103 1.37462 1.25908 73.6377 69.5253 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 6 104 1.46283 1.31058 75.3553 71.4424 105 1.54537 1.36581 77.2207 73.5531 106 1.54537 1.41865 79.2333 75.7454 107 1.54537 1.48328 81.4334 78.0376 108 1.76028 1.55477 83.8507 80.7745 109 1.77131 1.62576 86.4938 83.6542 110 1.77307 1.71688 89.4415 86.6984 111 2.00351 1.82501 92.7722 90.3548 112 2.02264 1.94314 96.548 94.285 113 2.10157 2.12007 101.043 98.7405 114 2.24131 2.40892 106.846 104.14 Data Set Standard Deviation = 0.955709 Numerator = 10845.1 Denominator = 11027.7 W Statistic = 0.983437 = 10845.1 / 11027.7 5% Critical value of 0.976 is less than 0.983437 Data is normally distributed at 95% level of significance 1% Critical value of 0.967 is less than 0.983437 Data is normally distributed at 99% level of significance DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 7 Parametric Prediction Interval Analysis Inter-Well Comparison Parameter: Cadmium Natural Logarithm Transformation Non-Detects Replaced with Detection Limit Inter-Well USEPA Formula 99% Comparison Number of comparisons = 5 Future Samples (k) = 5 = lesser of 5 or number of comparions Recent Dates = 1 Background Samples = 19 Background mean = -1.77131 Std Dev = 1.09732 99% confidence t = 2.55238 at 18 degree of freedom Well MW- 9 Date Samples Mean Interval Significant 8/14/2018 1 -1.34707 [0, 1.10222]FALSE Well MW-10 Date Samples Mean Interval Significant 8/14/2018 1 -2.65926 [0, 1.10222]FALSE Well MW-11 Date Samples Mean Interval Significant 8/14/2018 1 -3.50656 [0, 1.10222]FALSE Well MW-12 Date Samples Mean Interval Significant 8/14/2018 1 -0.616186 [0, 1.10222]FALSE Well MW-17 Date Samples Mean Interval Significant 8/14/2018 1 -1.60944 [0, 1.10222]FALSE DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 8 Cadmium Multi-Well Time-Series Graph Sample DateConcentration (ppb)0 0.5 1 1.5 2 MW- 8 MW- 9 MW-10 MW-11 MW-12 MW-172/18/20088/18/20092/16/20118/16/20122/14/20148/15/20152/12/20178/14/2018DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 1 Concentrations (ppb) Parameter: Calcium Original Data (Not Transformed) Non-Detects Replaced with Detection Limit Total Measurements: 48 Total Non-Detect: 1 Percent Non-Detects: 2.08333% Total Background Measurements: 8 There is 1 background location Loc.Meas.ND Date Conc.Original MW- 8 8 0 (0%)10/24/2016 6153 6153 12/1/2016 4970 4970 1/4/2017 8028 8028 2/16/2017 4572 4572 4/20/2017 6408 6408 5/22/2017 5445 5445 6/29/2017 6238 6238 8/16/2017 5638 5638 There are 5 compliance locations Loc.Meas.ND Date Conc.Original MW- 9 8 0 (0%)10/24/2016 1244 1244 12/1/2016 897 897 1/4/2017 967 967 2/16/2017 656 656 4/20/2017 653 653 5/22/2017 1049 1049 6/29/2017 1869 1869 8/16/2017 2051 2051 MW-10 8 0 (0%)10/24/2016 1736 1736 12/1/2016 2334 2334 1/4/2017 2570 2570 2/16/2017 2164 2164 4/20/2017 1844 1844 5/22/2017 2079 2079 6/29/2017 1989 1989 8/16/2017 2420 2420 MW-11 8 0 (0%)10/24/2016 9250 9250 12/1/2016 9025 9025 1/4/2017 9538 9538 2/16/2017 8854 8854 4/20/2017 9783 9783 5/22/2017 9139 9139 6/29/2017 12882 12882 8/16/2017 14100 14100 MW-12 8 0 (0%)10/24/2016 594 594 12/1/2016 801 801 1/4/2017 680 680 2/16/2017 757 757 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 2 4/20/2017 475 475 5/22/2017 505 505 6/29/2017 563 563 8/16/2017 589 589 MW-17 8 1 (12.5%)10/24/2016 550 550 12/1/2016 ND<0 ND<0 1/4/2017 413 413 2/16/2017 330 330 4/20/2017 323 323 5/22/2017 276 276 6/29/2017 380 380 8/16/2017 850 850 There are 0 unused locations Loc.Meas.ND Date Conc.Original DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 3 Wilcoxon Non-Parametric Analysis (Inter-Well) Parameter: Calcium Location: MW- 9 Original Data (Not Transformed) Non-Detects Replaced with Detection Limit Total non detects is 0 Non detect rank is 2.5 Wilcoxon Ranks Location Date Conc.Rank MW- 8 10/24/2016 6153 13 12/1/2016 4970 10 1/4/2017 8028 16 2/16/2017 4572 9 4/20/2017 6408 15 5/22/2017 5445 11 6/29/2017 6238 14 8/16/2017 5638 12 MW- 9 10/24/2016 1244 6 12/1/2016 897 3 1/4/2017 967 4 2/16/2017 656 2 4/20/2017 653 1 5/22/2017 1049 5 6/29/2017 1869 7 8/16/2017 2051 8 The Wilcoxon Statistic is 0 The Expected value is is 32 The Standard Deviation is 9.5219 The Z Score is -3.41318 The Standard Deviation adjusted for ties is 9.5219 The Z Score adjusted for ties is -3.41318 -3.41318 < 2.326 indicating no contamination at 1% significance level -3.41318 < 2.326 indicating no contamination at 1% significance level when adjusted for ties DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 4 Wilcoxon Non-Parametric Analysis (Inter-Well) Parameter: Calcium Location: MW-10 Original Data (Not Transformed) Non-Detects Replaced with Detection Limit Total non detects is 0 Non detect rank is 2.5 Wilcoxon Ranks Location Date Conc.Rank MW- 8 10/24/2016 6153 13 12/1/2016 4970 10 1/4/2017 8028 16 2/16/2017 4572 9 4/20/2017 6408 15 5/22/2017 5445 11 6/29/2017 6238 14 8/16/2017 5638 12 MW-10 10/24/2016 1736 1 12/1/2016 2334 6 1/4/2017 2570 8 2/16/2017 2164 5 4/20/2017 1844 2 5/22/2017 2079 4 6/29/2017 1989 3 8/16/2017 2420 7 The Wilcoxon Statistic is 0 The Expected value is is 32 The Standard Deviation is 9.5219 The Z Score is -3.41318 The Standard Deviation adjusted for ties is 9.5219 The Z Score adjusted for ties is -3.41318 -3.41318 < 2.326 indicating no contamination at 1% significance level -3.41318 < 2.326 indicating no contamination at 1% significance level when adjusted for ties DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 5 Wilcoxon Non-Parametric Analysis (Inter-Well) Parameter: Calcium Location: MW-11 Original Data (Not Transformed) Non-Detects Replaced with Detection Limit Total non detects is 0 Non detect rank is 2.5 Wilcoxon Ranks Location Date Conc.Rank MW- 8 10/24/2016 6153 5 12/1/2016 4970 2 1/4/2017 8028 8 2/16/2017 4572 1 4/20/2017 6408 7 5/22/2017 5445 3 6/29/2017 6238 6 8/16/2017 5638 4 MW-11 10/24/2016 9250 12 12/1/2016 9025 10 1/4/2017 9538 13 2/16/2017 8854 9 4/20/2017 9783 14 5/22/2017 9139 11 6/29/2017 12882 15 8/16/2017 14100 16 The Wilcoxon Statistic is 64 The Expected value is is 32 The Standard Deviation is 9.5219 The Z Score is 3.30816 The Standard Deviation adjusted for ties is 9.5219 The Z Score adjusted for ties is 3.30816 3.30816 > 2.326 indicating possible contamination at 1% significance level 3.30816 > 2.326 indicating possible contamination at 1% significance level when adjusted for ties DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 6 Wilcoxon Non-Parametric Analysis (Inter-Well) Parameter: Calcium Location: MW-12 Original Data (Not Transformed) Non-Detects Replaced with Detection Limit Total non detects is 0 Non detect rank is 2.5 Wilcoxon Ranks Location Date Conc.Rank MW- 8 10/24/2016 6153 13 12/1/2016 4970 10 1/4/2017 8028 16 2/16/2017 4572 9 4/20/2017 6408 15 5/22/2017 5445 11 6/29/2017 6238 14 8/16/2017 5638 12 MW-12 10/24/2016 594 5 12/1/2016 801 8 1/4/2017 680 6 2/16/2017 757 7 4/20/2017 475 1 5/22/2017 505 2 6/29/2017 563 3 8/16/2017 589 4 The Wilcoxon Statistic is 0 The Expected value is is 32 The Standard Deviation is 9.5219 The Z Score is -3.41318 The Standard Deviation adjusted for ties is 9.5219 The Z Score adjusted for ties is -3.41318 -3.41318 < 2.326 indicating no contamination at 1% significance level -3.41318 < 2.326 indicating no contamination at 1% significance level when adjusted for ties DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 7 Wilcoxon Non-Parametric Analysis (Inter-Well) Parameter: Calcium Location: MW-17 Original Data (Not Transformed) Non-Detects Replaced with Detection Limit Total non detects is 1 Non detect rank is 1 Wilcoxon Ranks Location Date Conc.Rank MW- 8 10/24/2016 6153 13 12/1/2016 4970 10 1/4/2017 8028 16 2/16/2017 4572 9 4/20/2017 6408 15 5/22/2017 5445 11 6/29/2017 6238 14 8/16/2017 5638 12 MW-17 10/24/2016 550 7 12/1/2016 ND<0 1 1/4/2017 413 6 2/16/2017 330 4 4/20/2017 323 3 5/22/2017 276 2 6/29/2017 380 5 8/16/2017 850 8 The Wilcoxon Statistic is 0 The Expected value is is 32 The Standard Deviation is 9.5219 The Z Score is -3.41318 The Standard Deviation adjusted for ties is 9.5219 The Z Score adjusted for ties is -3.41318 -3.41318 < 2.326 indicating no contamination at 1% significance level -3.41318 < 2.326 indicating no contamination at 1% significance level when adjusted for ties DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 8 Sen's Slope Analysis Parameter: Calcium Location: MW-11 Original Data (Not Transformed) Non-Detects Replaced with Detection Limit 90% Confidence Level Xj Xk (Xj - Xk)/(j-k)Q 9025 (12/1/2016)9250 (10/24/2016)(9025 - 9250)/(2 - 1)-225 9538 (1/4/2017)9250 (10/24/2016)(9538 - 9250)/(3 - 1)144 8854 (2/16/2017)9250 (10/24/2016)(8854 - 9250)/(4 - 1)-132 9783 (4/20/2017)9250 (10/24/2016)(9783 - 9250)/(5 - 1)133.25 9139 (5/22/2017)9250 (10/24/2016)(9139 - 9250)/(6 - 1)-22.2 12882 (6/29/2017)9250 (10/24/2016)(12882 - 9250)/(7 - 1)605.333 14100 (8/16/2017)9250 (10/24/2016)(14100 - 9250)/(8 - 1)692.857 9538 (1/4/2017)9025 (12/1/2016)(9538 - 9025)/(3 - 2)513 8854 (2/16/2017)9025 (12/1/2016)(8854 - 9025)/(4 - 2)-85.5 9783 (4/20/2017)9025 (12/1/2016)(9783 - 9025)/(5 - 2)252.667 9139 (5/22/2017)9025 (12/1/2016)(9139 - 9025)/(6 - 2)28.5 12882 (6/29/2017)9025 (12/1/2016)(12882 - 9025)/(7 - 2)771.4 14100 (8/16/2017)9025 (12/1/2016)(14100 - 9025)/(8 - 2)845.833 8854 (2/16/2017)9538 (1/4/2017)(8854 - 9538)/(4 - 3)-684 9783 (4/20/2017)9538 (1/4/2017)(9783 - 9538)/(5 - 3)122.5 9139 (5/22/2017)9538 (1/4/2017)(9139 - 9538)/(6 - 3)-133 12882 (6/29/2017)9538 (1/4/2017)(12882 - 9538)/(7 - 3)836 14100 (8/16/2017)9538 (1/4/2017)(14100 - 9538)/(8 - 3)912.4 9783 (4/20/2017)8854 (2/16/2017)(9783 - 8854)/(5 - 4)929 9139 (5/22/2017)8854 (2/16/2017)(9139 - 8854)/(6 - 4)142.5 12882 (6/29/2017)8854 (2/16/2017)(12882 - 8854)/(7 - 4)1342.67 14100 (8/16/2017)8854 (2/16/2017)(14100 - 8854)/(8 - 4)1311.5 9139 (5/22/2017)9783 (4/20/2017)(9139 - 9783)/(6 - 5)-644 12882 (6/29/2017)9783 (4/20/2017)(12882 - 9783)/(7 - 5)1549.5 14100 (8/16/2017)9783 (4/20/2017)(14100 - 9783)/(8 - 5)1439 12882 (6/29/2017)9139 (5/22/2017)(12882 - 9139)/(7 - 6)3743 14100 (8/16/2017)9139 (5/22/2017)(14100 - 9139)/(8 - 6)2480.5 14100 (8/16/2017)12882 (6/29/2017)(14100 - 12882)/(8 - 7)1218 Number of Q values = 28 Ordered Q Values n Q 1 -684 2 -644 3 -225 4 -133 5 -132 6 -85.5 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 9 7 -22.2 8 28.5 9 122.5 10 133.25 11 142.5 12 144 13 252.667 14 513 15 605.333 16 692.857 17 771.4 18 836 19 845.833 20 912.4 21 929 22 1218 23 1311.5 24 1342.67 25 1439 26 1549.5 27 2480.5 28 3743 Sen's Estimator (Median Q) is 559.167 Time Period Observations 10/24/2016 1 12/1/2016 1 1/4/2017 1 2/16/2017 1 4/20/2017 1 5/22/2017 1 6/29/2017 1 8/16/2017 1 There are 0 time periods with multiple data A = 0 B = 0 C = 0 D = 0 E = 0 F = 0 a = 1176 b = 3024 c = 112 Group Variance = 65.3333 For 90% confidence interval (two-tailed), Z at (1-0.9)/2 = 1.64485 C = 13.2952 M1 = (28 - 13.2952)/2.0 = 7.35241 M2 = (28 + 13.2952)/2.0 + 1 = 21.6476 Lower limit is -22.2 = Q(7) Upper limit is 1218 = Q(22) -22.2 < 0 < 1218 indicating no trend in data. DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 10 Calcium Multi-Well Time-Series Graph Sample DateConcentration (ppb)0 5000 10000 15000 20000 MW- 8 MW- 9 MW-10 MW-11 MW-12 MW-1710/24/201612/5/20161/16/20172/27/20174/11/20175/23/20177/4/20178/16/2017DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 1 Concentrations (ppb) Parameter: Chromium Original Data (Not Transformed) Non-Detects Replaced with Detection Limit Total Measurements: 114 Total Non-Detect: 40 Percent Non-Detects: 35.0877% Total Background Measurements: 19 There is 1 background location Loc.Meas.ND Date Conc.Original MW- 8 19 7 (36.8421%)2/18/2008 20 20 8/20/2009 ND<0.1 ND<0.1 8/24/2010 4 4 2/23/2011 3.7 3.7 8/24/2011 ND<0.04 ND<0.04 2/21/2012 ND<0.04 ND<0.04 8/28/2012 ND<0.18 ND<0.18 2/19/2013 0.27 0.27 8/28/2013 0.41 0.41 2/24/2014 1.2 1.2 8/5/2014 0.38 0.38 2/10/2015 0.89 0.89 8/25/2015 0.47 0.47 2/25/2016 0.95 0.95 8/10/2016 0.3 0.3 2/16/2017 ND<0.06 ND<0.06 8/16/2017 5.1 5.1 2/19/2018 ND<0.08 ND<0.08 8/14/2018 ND<0.15 ND<0.15 There are 5 compliance locations Loc.Meas.ND Date Conc.Original MW- 9 19 10 (52.6316%)2/18/2008 1.8 1.8 8/20/2009 ND<0.1 ND<0.1 8/24/2010 0.6 0.6 2/23/2011 ND<0.03 ND<0.03 8/24/2011 1.1 1.1 2/21/2012 0.22 0.22 8/28/2012 ND<0.18 ND<0.18 2/19/2013 ND<0.18 ND<0.18 8/28/2013 0.67 0.67 2/24/2014 1.7 1.7 8/5/2014 ND<0.14 ND<0.14 2/10/2015 0.5 0.5 8/25/2015 0.13 0.13 2/25/2016 ND<0.06 ND<0.06 8/10/2016 ND<0.06 ND<0.06 2/16/2017 ND<0.06 ND<0.06 8/16/2017 0.73 0.73 2/19/2018 ND<0.08 ND<0.08 8/14/2018 ND<0.15 ND<0.15 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 2 MW-10 19 12 (63.1579%)2/18/2008 0.6 0.6 8/20/2009 ND<0.1 ND<0.1 8/24/2010 ND<0.03 ND<0.03 2/23/2011 ND<0.03 ND<0.03 8/24/2011 ND<0.04 ND<0.04 2/21/2012 ND<0.04 ND<0.04 8/28/2012 0.2 0.2 2/19/2013 ND<0.18 ND<0.18 8/28/2013 0.16 0.16 2/24/2014 0.24 0.24 8/5/2014 ND<0.14 ND<0.14 2/10/2015 0.17 0.17 8/25/2015 ND<0.12 ND<0.12 2/25/2016 ND<0.06 ND<0.06 8/10/2016 ND<0.06 ND<0.06 2/16/2017 ND<0.06 ND<0.06 8/16/2017 0.14 0.14 2/19/2018 0.09 0.09 8/14/2018 ND<0.15 ND<0.15 MW-11 19 8 (42.1053%)2/18/2008 0.6 0.6 8/20/2009 0.9 0.9 8/24/2010 ND<0.03 ND<0.03 2/23/2011 0.8 0.8 8/24/2011 0.46 0.46 2/21/2012 0.15 0.15 8/28/2012 1.4 1.4 2/19/2013 ND<0.18 ND<0.18 8/28/2013 0.85 0.85 2/24/2014 1.4 1.4 8/5/2014 1 1 2/10/2015 ND<0.14 ND<0.14 8/25/2015 ND<0.12 ND<0.12 2/25/2016 0.52 0.52 8/10/2016 ND<0.06 ND<0.06 2/16/2017 ND<0.06 ND<0.06 8/16/2017 1.4 1.4 2/19/2018 ND<0.08 ND<0.08 8/14/2018 ND<0.15 ND<0.15 MW-12 19 1 (5.26316%)2/18/2008 5 5 8/20/2009 0.5 0.5 8/24/2010 0.6 0.6 2/23/2011 0.7 0.7 8/24/2011 4.3 4.3 2/21/2012 2.5 2.5 8/28/2012 1 1 2/19/2013 1.2 1.2 8/28/2013 0.61 0.61 2/24/2014 1.2 1.2 8/5/2014 1.1 1.1 2/10/2015 0.49 0.49 8/25/2015 1.1 1.1 2/25/2016 1 1 8/10/2016 0.25 0.25 2/16/2017 ND<0.06 ND<0.06 8/16/2017 0.29 0.29 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 3 2/19/2018 1.3 1.3 8/14/2018 1.6 1.6 MW-17 19 2 (10.5263%)2/18/2008 7.3 7.3 8/20/2009 2.7 2.7 8/24/2010 1.7 1.7 2/23/2011 0.9 0.9 8/24/2011 5 5 2/21/2012 5.6 5.6 8/28/2012 1.3 1.3 2/19/2013 0.81 0.81 8/28/2013 1.5 1.5 2/24/2014 3.2 3.2 8/5/2014 1 1 2/10/2015 2.2 2.2 8/25/2015 1.4 1.4 2/25/2016 2.1 2.1 8/10/2016 0.64 0.64 2/16/2017 ND<0.06 ND<0.06 8/16/2017 1.2 1.2 2/19/2018 0.5 0.5 8/14/2018 ND<0.15 ND<0.15 There are 0 unused locations Loc.Meas.ND Date Conc.Original DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 4 Shapiro-Francia Test of Normality Parameter: Chromium All Locations Normaltiy Test of Residuals Natural Logarithm Transformation Non-Detects Replaced with Detection Limit Total Number of Measurements = 114 i x(i)m(i)sum(m^2)sum(mx) 1 -3.05331 -2.40892 5.80292 7.35519 2 -2.659 -2.12007 10.2976 12.9924 3 -2.40389 -1.94314 14.0734 17.6635 4 -2.40389 -1.82501 17.404 22.0506 5 -2.31301 -1.71688 20.3517 26.0218 6 -2.13702 -1.62576 22.9948 29.4961 7 -2.01563 -1.55477 25.4121 32.6299 8 -1.99842 -1.48328 27.6123 35.5941 9 -1.71074 -1.41865 29.6248 38.0211 10 -1.61986 -1.36581 31.4903 40.2335 11 -1.61986 -1.31058 33.2079 42.3565 12 -1.4876 -1.25908 34.7932 44.2295 13 -1.33218 -1.21073 36.259 45.8424 14 -1.32248 -1.17 37.6279 47.3897 15 -1.32248 -1.12639 38.8967 48.8793 16 -1.32248 -1.08482 40.0735 50.314 17 -1.23188 -1.04939 41.1748 51.6067 18 -1.2214 -1.01104 42.1969 52.8416 19 -1.2214 -0.974114 43.1458 54.0313 20 -1.08346 -0.942375 44.0339 55.0524 21 -1.08213 -0.907769 44.858 56.0347 22 -1.0348 -0.874218 45.6222 56.9393 23 -0.93372 -0.841621 46.3305 57.7252 24 -0.93372 -0.813379 46.9921 58.4846 25 -0.933046 -0.782366 47.6042 59.2146 26 -0.926716 -0.752084 48.1699 59.9116 27 -0.899808 -0.725736 48.6965 60.5646 28 -0.811653 -0.696684 49.1819 61.1301 29 -0.772565 -0.668209 49.6284 61.6463 30 -0.703572 -0.643345 50.0423 62.099 31 -0.703572 -0.615839 50.4216 62.5322 32 -0.686186 -0.588793 50.7682 62.9363 33 -0.558934 -0.565108 51.0876 63.2521 34 -0.549288 -0.538836 51.3779 63.5481 35 -0.538731 -0.51293 51.641 63.8244 36 -0.528255 -0.487364 51.8786 64.0819 37 -0.528255 -0.464904 52.0947 64.3275 38 -0.528255 -0.439913 52.2882 64.5599 39 -0.521251 -0.415193 52.4606 64.7763 40 -0.494343 -0.393433 52.6154 64.9708 41 -0.47518 -0.369171 52.7517 65.1462 42 -0.45062 -0.345126 52.8708 65.3017 43 -0.406187 -0.323919 52.9757 65.4333 44 -0.388983 -0.300232 53.0659 65.5501 45 -0.35641 -0.276714 53.1424 65.6487 46 -0.34526 -0.253347 53.2066 65.7362 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 5 47 -0.339881 -0.232693 53.2608 65.8152 48 -0.239899 -0.209575 53.3047 65.8655 49 -0.223866 -0.186567 53.3395 65.9073 50 -0.223866 -0.166199 53.3671 65.9445 51 -0.202259 -0.143367 53.3877 65.9735 52 -0.152594 -0.12061 53.4022 65.9919 53 -0.12279 -0.100433 53.4123 66.0042 54 -0.0766081 -0.0777834 53.4183 66.0102 55 -0.0575774 -0.0551734 53.4214 66.0134 56 -0.0231952 -0.0350997 53.4226 66.0142 57 -0.0174295 -0.0125328 53.4228 66.0144 58 0.0224653 0.0125328 53.4229 66.0147 59 0.0599675 0.0350997 53.4242 66.0168 60 0.0965732 0.0551734 53.4272 66.0221 61 0.154416 0.0777834 53.4333 66.0341 62 0.154416 0.100433 53.4433 66.0496 63 0.164892 0.12061 53.4579 66.0695 64 0.165566 0.143367 53.4784 66.0933 65 0.249726 0.166199 53.5061 66.1348 66 0.249726 0.186567 53.5409 66.1813 67 0.290729 0.209575 53.5848 66.2423 68 0.319043 0.232693 53.6389 66.3165 69 0.319043 0.253347 53.7031 66.3973 70 0.336737 0.276714 53.7797 66.4905 71 0.336737 0.300232 53.8698 66.5916 72 0.388036 0.323919 53.9748 66.7173 73 0.41678 0.345126 54.0939 66.8612 74 0.417019 0.369171 54.2302 67.0151 75 0.452574 0.393433 54.385 67.1932 76 0.502038 0.415193 54.5573 67.4016 77 0.513199 0.439913 54.7509 67.6274 78 0.539621 0.464904 54.967 67.8782 79 0.548558 0.487364 55.2045 68.1456 80 0.570357 0.51293 55.4676 68.4381 81 0.624419 0.538836 55.758 68.7746 82 0.675718 0.565108 56.0773 69.1565 83 0.682722 0.588793 56.424 69.5584 84 0.698456 0.615839 56.8032 69.9886 85 0.753353 0.643345 57.2171 70.4732 86 0.763697 0.668209 57.6636 70.9836 87 0.797785 0.696684 58.149 71.5394 88 0.858039 0.725736 58.6757 72.1621 89 0.923252 0.752084 59.2413 72.8564 90 0.970404 0.782366 59.8534 73.6156 91 0.980107 0.813379 60.515 74.4128 92 0.997312 0.841621 61.2233 75.2522 93 1.03103 0.874218 61.9876 76.1535 94 1.07071 0.907769 62.8116 77.1255 95 1.08819 0.942375 63.6997 78.151 96 1.09045 0.974114 64.6486 79.2132 97 1.17622 1.01104 65.6708 80.4024 98 1.19355 1.04939 66.772 81.6549 99 1.36954 1.08482 67.9489 83.1406 100 1.48287 1.12639 69.2176 84.8109 101 1.53002 1.17 70.5865 86.601 102 1.53002 1.21073 72.0524 88.4535 103 1.53002 1.25908 73.6377 90.3799 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 6 104 1.58624 1.31058 75.3553 92.4588 105 1.61303 1.36581 77.2207 94.6619 106 1.74798 1.41865 79.2333 97.1416 107 1.76385 1.48328 81.4334 99.7579 108 1.77433 1.55477 83.8507 102.517 109 2.02156 1.62576 86.4938 105.803 110 2.07872 1.71688 89.4415 109.372 111 2.12332 1.82501 92.7722 113.247 112 2.20128 1.94314 96.548 117.525 113 2.44423 2.12007 101.043 122.707 114 3.81072 2.40892 106.846 131.886 Data Set Standard Deviation = 1.20472 Numerator = 17394 Denominator = 17523 W Statistic = 0.992635 = 17394 / 17523 5% Critical value of 0.976 is less than 0.992635 Data is normally distributed at 95% level of significance 1% Critical value of 0.967 is less than 0.992635 Data is normally distributed at 99% level of significance DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 7 Parametric Prediction Interval Analysis Inter-Well Comparison Parameter: Chromium Natural Logarithm Transformation Non-Detects Replaced with Detection Limit Inter-Well USEPA Formula 99% Comparison Number of comparisons = 5 Future Samples (k) = 5 = lesser of 5 or number of comparions Recent Dates = 1 Background Samples = 19 Background mean = -0.81499 Std Dev = 1.74826 99% confidence t = 2.55238 at 18 degree of freedom Well MW- 9 Date Samples Mean Interval Significant 8/14/2018 1 -1.89712 [0, 3.76315]FALSE Well MW-10 Date Samples Mean Interval Significant 8/14/2018 1 -1.89712 [0, 3.76315]FALSE Well MW-11 Date Samples Mean Interval Significant 8/14/2018 1 -1.89712 [0, 3.76315]FALSE Well MW-12 Date Samples Mean Interval Significant 8/14/2018 1 0.470004 [0, 3.76315]FALSE Well MW-17 Date Samples Mean Interval Significant 8/14/2018 1 -1.89712 [0, 3.76315]FALSE DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 8 Chromium Multi-Well Time-Series Graph Sample DateConcentration (ppb)0 5 10 15 20 MW- 8 MW- 9 MW-10 MW-11 MW-12 MW-172/18/20088/18/20092/16/20118/16/20122/14/20148/15/20152/12/20178/14/2018DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 1 Concentrations (ppb) Parameter: Cobalt Original Data (Not Transformed) Non-Detects Replaced with Detection Limit Total Measurements: 48 Total Non-Detect: 7 Percent Non-Detects: 14.5833% Total Background Measurements: 8 There is 1 background location Loc.Meas.ND Date Conc.Original MW- 8 8 0 (0%)10/24/2016 0.95 0.95 12/1/2016 0.74 0.74 1/4/2017 0.59 0.59 2/16/2017 0.66 0.66 4/20/2017 0.64 0.64 5/22/2017 0.76 0.76 6/29/2017 0.75 0.75 8/16/2017 0.57 0.57 There are 5 compliance locations Loc.Meas.ND Date Conc.Original MW- 9 8 1 (12.5%)10/24/2016 1.5 1.5 12/1/2016 0.19 0.19 1/4/2017 0.22 0.22 2/16/2017 0.17 0.17 4/20/2017 ND<0.24 ND<0.24 5/22/2017 1.4 1.4 6/29/2017 2.4 2.4 8/16/2017 1.6 1.6 MW-10 8 4 (50%)10/24/2016 0.45 0.45 12/1/2016 ND<0.04 ND<0.04 1/4/2017 ND<0.04 ND<0.04 2/16/2017 ND<0.04 ND<0.04 4/20/2017 ND<0.24 ND<0.24 5/22/2017 0.56 0.56 6/29/2017 0.35 0.35 8/16/2017 0.84 0.84 MW-11 8 2 (25%)10/24/2016 3.1 3.1 12/1/2016 0.04 0.04 1/4/2017 ND<0.04 ND<0.04 2/16/2017 ND<0.04 ND<0.04 4/20/2017 0.27 0.27 5/22/2017 0.82 0.82 6/29/2017 5.5 5.5 8/16/2017 4.5 4.5 MW-12 8 0 (0%)10/24/2016 1.6 1.6 12/1/2016 2.6 2.6 1/4/2017 1.8 1.8 2/16/2017 3.8 3.8 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 2 4/20/2017 1.7 1.7 5/22/2017 3.4 3.4 6/29/2017 3.9 3.9 8/16/2017 2.1 2.1 MW-17 8 0 (0%)10/24/2016 4 4 12/1/2016 0.66 0.66 1/4/2017 0.93 0.93 2/16/2017 0.5 0.5 4/20/2017 0.73 0.73 5/22/2017 1.1 1.1 6/29/2017 4.2 4.2 8/16/2017 2.6 2.6 There are 0 unused locations Loc.Meas.ND Date Conc.Original DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 3 Wilcoxon Non-Parametric Analysis (Inter-Well) Parameter: Cobalt Location: MW- 9 Original Data (Not Transformed) Non-Detects Replaced with Detection Limit Total non detects is 1 Non detect rank is 1 Wilcoxon Ranks Location Date Conc.Rank MW- 8 10/24/2016 0.95 12 12/1/2016 0.74 9 1/4/2017 0.59 6 2/16/2017 0.66 8 4/20/2017 0.64 7 5/22/2017 0.76 11 6/29/2017 0.75 10 8/16/2017 0.57 5 MW- 9 10/24/2016 1.5 14 12/1/2016 0.19 3 1/4/2017 0.22 4 2/16/2017 0.17 2 4/20/2017 ND<0.24 1 5/22/2017 1.4 13 6/29/2017 2.4 16 8/16/2017 1.6 15 The Wilcoxon Statistic is 32 The Expected value is is 32 The Standard Deviation is 9.5219 The Z Score is -0.0525105 The Standard Deviation adjusted for ties is 9.5219 The Z Score adjusted for ties is -0.0525105 -0.0525105 < 2.326 indicating no contamination at 1% significance level -0.0525105 < 2.326 indicating no contamination at 1% significance level when adjusted for ties DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 4 Wilcoxon Non-Parametric Analysis (Inter-Well) Parameter: Cobalt Location: MW-10 Original Data (Not Transformed) Non-Detects Replaced with Detection Limit Total non detects is 4 Non detect rank is 2.5 Wilcoxon Ranks Location Date Conc.Rank MW- 8 10/24/2016 0.95 16 12/1/2016 0.74 12 1/4/2017 0.59 9 2/16/2017 0.66 11 4/20/2017 0.64 10 5/22/2017 0.76 14 6/29/2017 0.75 13 8/16/2017 0.57 8 MW-10 10/24/2016 0.45 6 12/1/2016 ND<0.04 2.5 1/4/2017 ND<0.04 2.5 2/16/2017 ND<0.04 2.5 4/20/2017 ND<0.24 2.5 5/22/2017 0.56 7 6/29/2017 0.35 5 8/16/2017 0.84 15 The Wilcoxon Statistic is 7 The Expected value is is 32 The Standard Deviation is 9.5219 The Z Score is -2.67804 The Standard Deviation adjusted for ties is 9.45163 The Z Score adjusted for ties is -2.69795 -2.67804 < 2.326 indicating no contamination at 1% significance level -2.69795 < 2.326 indicating no contamination at 1% significance level when adjusted for ties DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 5 Wilcoxon Non-Parametric Analysis (Inter-Well) Parameter: Cobalt Location: MW-11 Original Data (Not Transformed) Non-Detects Replaced with Detection Limit Total non detects is 2 Non detect rank is 1.5 Wilcoxon Ranks Location Date Conc.Rank MW- 8 10/24/2016 0.95 13 12/1/2016 0.74 9 1/4/2017 0.59 6 2/16/2017 0.66 8 4/20/2017 0.64 7 5/22/2017 0.76 11 6/29/2017 0.75 10 8/16/2017 0.57 5 MW-11 10/24/2016 3.1 14 12/1/2016 0.04 3 1/4/2017 ND<0.04 1.5 2/16/2017 ND<0.04 1.5 4/20/2017 0.27 4 5/22/2017 0.82 12 6/29/2017 5.5 16 8/16/2017 4.5 15 The Wilcoxon Statistic is 31 The Expected value is is 32 The Standard Deviation is 9.5219 The Z Score is -0.157532 The Standard Deviation adjusted for ties is 9.5149 The Z Score adjusted for ties is -0.157647 -0.157532 < 2.326 indicating no contamination at 1% significance level -0.157647 < 2.326 indicating no contamination at 1% significance level when adjusted for ties DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 6 Wilcoxon Non-Parametric Analysis (Inter-Well) Parameter: Cobalt Location: MW-12 Original Data (Not Transformed) Non-Detects Replaced with Detection Limit Total non detects is 0 Non detect rank is 1.5 Wilcoxon Ranks Location Date Conc.Rank MW- 8 10/24/2016 0.95 8 12/1/2016 0.74 5 1/4/2017 0.59 2 2/16/2017 0.66 4 4/20/2017 0.64 3 5/22/2017 0.76 7 6/29/2017 0.75 6 8/16/2017 0.57 1 MW-12 10/24/2016 1.6 9 12/1/2016 2.6 13 1/4/2017 1.8 11 2/16/2017 3.8 15 4/20/2017 1.7 10 5/22/2017 3.4 14 6/29/2017 3.9 16 8/16/2017 2.1 12 The Wilcoxon Statistic is 64 The Expected value is is 32 The Standard Deviation is 9.5219 The Z Score is 3.30816 The Standard Deviation adjusted for ties is 9.5219 The Z Score adjusted for ties is 3.30816 3.30816 > 2.326 indicating possible contamination at 1% significance level 3.30816 > 2.326 indicating possible contamination at 1% significance level when adjusted for ties DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 7 Wilcoxon Non-Parametric Analysis (Inter-Well) Parameter: Cobalt Location: MW-17 Original Data (Not Transformed) Non-Detects Replaced with Detection Limit Total non detects is 0 Non detect rank is 1.5 Wilcoxon Ranks Location Date Conc.Rank MW- 8 10/24/2016 0.95 12 12/1/2016 0.74 8 1/4/2017 0.59 3 2/16/2017 0.66 5 4/20/2017 0.64 4 5/22/2017 0.76 10 6/29/2017 0.75 9 8/16/2017 0.57 2 MW-17 10/24/2016 4 15 12/1/2016 0.66 6 1/4/2017 0.93 11 2/16/2017 0.5 1 4/20/2017 0.73 7 5/22/2017 1.1 13 6/29/2017 4.2 16 8/16/2017 2.6 14 The Wilcoxon Statistic is 47 The Expected value is is 32 The Standard Deviation is 9.5219 The Z Score is 1.5228 The Standard Deviation adjusted for ties is 9.5219 The Z Score adjusted for ties is 1.5228 1.5228 < 2.326 indicating no contamination at 1% significance level 1.5228 < 2.326 indicating no contamination at 1% significance level when adjusted for ties DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 8 Sen's Slope Analysis Parameter: Cobalt Location: MW-12 Original Data (Not Transformed) Non-Detects Replaced with Detection Limit 90% Confidence Level Xj Xk (Xj - Xk)/(j-k)Q 2.6 (12/1/2016)1.6 (10/24/2016)(2.6 - 1.6)/(2 - 1)1 1.8 (1/4/2017)1.6 (10/24/2016)(1.8 - 1.6)/(3 - 1)0.1 3.8 (2/16/2017)1.6 (10/24/2016)(3.8 - 1.6)/(4 - 1)0.733333 1.7 (4/20/2017)1.6 (10/24/2016)(1.7 - 1.6)/(5 - 1)0.025 3.4 (5/22/2017)1.6 (10/24/2016)(3.4 - 1.6)/(6 - 1)0.36 3.9 (6/29/2017)1.6 (10/24/2016)(3.9 - 1.6)/(7 - 1)0.383333 2.1 (8/16/2017)1.6 (10/24/2016)(2.1 - 1.6)/(8 - 1)0.0714286 1.8 (1/4/2017)2.6 (12/1/2016)(1.8 - 2.6)/(3 - 2)-0.8 3.8 (2/16/2017)2.6 (12/1/2016)(3.8 - 2.6)/(4 - 2)0.6 1.7 (4/20/2017)2.6 (12/1/2016)(1.7 - 2.6)/(5 - 2)-0.3 3.4 (5/22/2017)2.6 (12/1/2016)(3.4 - 2.6)/(6 - 2)0.2 3.9 (6/29/2017)2.6 (12/1/2016)(3.9 - 2.6)/(7 - 2)0.26 2.1 (8/16/2017)2.6 (12/1/2016)(2.1 - 2.6)/(8 - 2)-0.0833333 3.8 (2/16/2017)1.8 (1/4/2017)(3.8 - 1.8)/(4 - 3)2 1.7 (4/20/2017)1.8 (1/4/2017)(1.7 - 1.8)/(5 - 3)-0.05 3.4 (5/22/2017)1.8 (1/4/2017)(3.4 - 1.8)/(6 - 3)0.533333 3.9 (6/29/2017)1.8 (1/4/2017)(3.9 - 1.8)/(7 - 3)0.525 2.1 (8/16/2017)1.8 (1/4/2017)(2.1 - 1.8)/(8 - 3)0.06 1.7 (4/20/2017)3.8 (2/16/2017)(1.7 - 3.8)/(5 - 4)-2.1 3.4 (5/22/2017)3.8 (2/16/2017)(3.4 - 3.8)/(6 - 4)-0.2 3.9 (6/29/2017)3.8 (2/16/2017)(3.9 - 3.8)/(7 - 4)0.0333333 2.1 (8/16/2017)3.8 (2/16/2017)(2.1 - 3.8)/(8 - 4)-0.425 3.4 (5/22/2017)1.7 (4/20/2017)(3.4 - 1.7)/(6 - 5)1.7 3.9 (6/29/2017)1.7 (4/20/2017)(3.9 - 1.7)/(7 - 5)1.1 2.1 (8/16/2017)1.7 (4/20/2017)(2.1 - 1.7)/(8 - 5)0.133333 3.9 (6/29/2017)3.4 (5/22/2017)(3.9 - 3.4)/(7 - 6)0.5 2.1 (8/16/2017)3.4 (5/22/2017)(2.1 - 3.4)/(8 - 6)-0.65 2.1 (8/16/2017)3.9 (6/29/2017)(2.1 - 3.9)/(8 - 7)-1.8 Number of Q values = 28 Ordered Q Values n Q 1 -2.1 2 -1.8 3 -0.8 4 -0.65 5 -0.425 6 -0.3 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 9 7 -0.2 8 -0.0833333 9 -0.05 10 0.025 11 0.0333333 12 0.06 13 0.0714286 14 0.1 15 0.133333 16 0.2 17 0.26 18 0.36 19 0.383333 20 0.5 21 0.525 22 0.533333 23 0.6 24 0.733333 25 1 26 1.1 27 1.7 28 2 Sen's Estimator (Median Q) is 0.116667 Time Period Observations 10/24/2016 1 12/1/2016 1 1/4/2017 1 2/16/2017 1 4/20/2017 1 5/22/2017 1 6/29/2017 1 8/16/2017 1 There are 0 time periods with multiple data A = 0 B = 0 C = 0 D = 0 E = 0 F = 0 a = 1176 b = 3024 c = 112 Group Variance = 65.3333 For 90% confidence interval (two-tailed), Z at (1-0.9)/2 = 1.64485 C = 13.2952 M1 = (28 - 13.2952)/2.0 = 7.35241 M2 = (28 + 13.2952)/2.0 + 1 = 21.6476 Lower limit is -0.2 = Q(7) Upper limit is 0.533333 = Q(22) -0.2 < 0 < 0.533333 indicating no trend in data. DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 10 Cobalt Multi-Well Time-Series Graph Sample DateConcentration (ppb)0 1 2 3 4 5 6 MW- 8 MW- 9 MW-10 MW-11 MW-12 MW-1710/24/201612/5/20161/16/20172/27/20174/11/20175/23/20177/4/20178/16/2017DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 1 Concentrations (ppb) Parameter: Copper Original Data (Not Transformed) Non-Detects Replaced with Detection Limit Total Measurements: 114 Total Non-Detect: 4 Percent Non-Detects: 3.50877% Total Background Measurements: 19 There is 1 background location Loc.Meas.ND Date Conc.Original MW- 8 19 3 (15.7895%)2/18/2008 16 16 8/20/2009 ND<0.04 ND<0.04 8/24/2010 9.7 9.7 2/23/2011 8.9 8.9 8/24/2011 ND<0.02 ND<0.02 2/21/2012 ND<0.02 ND<0.02 8/28/2012 0.75 0.75 2/19/2013 1.1 1.1 8/28/2013 1.4 1.4 2/24/2014 1.3 1.3 8/5/2014 0.79 0.79 2/10/2015 1.3 1.3 8/25/2015 0.86 0.86 2/25/2016 1.3 1.3 8/10/2016 1.1 1.1 2/16/2017 0.44 0.44 8/16/2017 3.7 3.7 2/19/2018 0.51 0.51 8/14/2018 1.5 1.5 There are 5 compliance locations Loc.Meas.ND Date Conc.Original MW- 9 19 1 (5.26316%)2/18/2008 6.1 6.1 8/20/2009 0.9 0.9 8/24/2010 2.6 2.6 2/23/2011 0.3 0.3 8/24/2011 5.1 5.1 2/21/2012 1.6 1.6 8/28/2012 0.92 0.92 2/19/2013 0.84 0.84 8/28/2013 3.1 3.1 2/24/2014 3.4 3.4 8/5/2014 0.42 0.42 2/10/2015 3.5 3.5 8/25/2015 0.97 0.97 2/25/2016 1.8 1.8 8/10/2016 0.83 0.83 2/16/2017 ND<0.07 ND<0.07 8/16/2017 1.6 1.6 2/19/2018 0.8 0.8 8/14/2018 0.21 0.21 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 2 MW-10 19 0 (0%)2/18/2008 7 7 8/20/2009 0.5 0.5 8/24/2010 0.5 0.5 2/23/2011 0.3 0.3 8/24/2011 0.61 0.61 2/21/2012 0.56 0.56 8/28/2012 0.97 0.97 2/19/2013 0.34 0.34 8/28/2013 1.6 1.6 2/24/2014 2.3 2.3 8/5/2014 0.37 0.37 2/10/2015 0.41 0.41 8/25/2015 0.51 0.51 2/25/2016 0.44 0.44 8/10/2016 0.23 0.23 2/16/2017 0.1 0.1 8/16/2017 0.49 0.49 2/19/2018 0.67 0.67 8/14/2018 0.1 0.1 MW-11 19 0 (0%)2/18/2008 5.5 5.5 8/20/2009 5.2 5.2 8/24/2010 0.9 0.9 2/23/2011 4.5 4.5 8/24/2011 3.3 3.3 2/21/2012 0.9 0.9 8/28/2012 6.1 6.1 2/19/2013 0.23 0.23 8/28/2013 4.6 4.6 2/24/2014 7.8 7.8 8/5/2014 4.9 4.9 2/10/2015 1.1 1.1 8/25/2015 1.1 1.1 2/25/2016 6.8 6.8 8/10/2016 1.7 1.7 2/16/2017 0.24 0.24 8/16/2017 7.1 7.1 2/19/2018 0.55 0.55 8/14/2018 0.13 0.13 MW-12 19 0 (0%)2/18/2008 12 12 8/20/2009 2.2 2.2 8/24/2010 2 2 2/23/2011 1.8 1.8 8/24/2011 9.4 9.4 2/21/2012 5.1 5.1 8/28/2012 1.9 1.9 2/19/2013 2.4 2.4 8/28/2013 1.6 1.6 2/24/2014 4 4 8/5/2014 2.4 2.4 2/10/2015 0.9 0.9 8/25/2015 2.8 2.8 2/25/2016 3.6 3.6 8/10/2016 1.3 1.3 2/16/2017 1.6 1.6 8/16/2017 0.7 0.7 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 3 2/19/2018 3.3 3.3 8/14/2018 4.4 4.4 MW-17 19 0 (0%)2/18/2008 30 30 8/20/2009 13 13 8/24/2010 6.2 6.2 2/23/2011 2.6 2.6 8/24/2011 20 20 2/21/2012 24 24 8/28/2012 4 4 2/19/2013 3 3 8/28/2013 6.5 6.5 2/24/2014 11 11 8/5/2014 3.5 3.5 2/10/2015 7.1 7.1 8/25/2015 5.3 5.3 2/25/2016 11 11 8/10/2016 4.6 4.6 2/16/2017 0.51 0.51 8/16/2017 4.7 4.7 2/19/2018 0.65 0.65 8/14/2018 0.33 0.33 There are 0 unused locations Loc.Meas.ND Date Conc.Original DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 4 Shapiro-Francia Test of Normality Parameter: Copper All Locations Normality Test of Parameter Concentrations Natural Logarithm Transformation Non-Detects Replaced with Detection Limit Total Number of Measurements = 114 i x(i)m(i)sum(m^2)sum(mx) 1 -3.91202 -2.40892 5.80292 9.42377 2 -3.91202 -2.12007 10.2976 17.7175 3 -3.21888 -1.94314 14.0734 23.9722 4 -2.65926 -1.82501 17.404 28.8254 5 -2.30259 -1.71688 20.3517 32.7787 6 -2.30259 -1.62576 22.9948 36.5221 7 -2.04022 -1.55477 25.4121 39.6942 8 -1.56065 -1.48328 27.6123 42.0091 9 -1.46968 -1.41865 29.6248 44.094 10 -1.46968 -1.36581 31.4903 46.1013 11 -1.42712 -1.31058 33.2079 47.9717 12 -1.20397 -1.25908 34.7932 49.4876 13 -1.20397 -1.21073 36.259 50.9453 14 -1.10866 -1.17 37.6279 52.2424 15 -1.07881 -1.12639 38.8967 53.4576 16 -0.994252 -1.08482 40.0735 54.5362 17 -0.891598 -1.04939 41.1748 55.4718 18 -0.867501 -1.01104 42.1969 56.3489 19 -0.820981 -0.974114 43.1458 57.1486 20 -0.820981 -0.942375 44.0339 57.9223 21 -0.71335 -0.907769 44.858 58.5698 22 -0.693147 -0.874218 45.6222 59.1758 23 -0.693147 -0.841621 46.3305 59.7592 24 -0.673345 -0.813379 46.9921 60.3068 25 -0.673345 -0.782366 47.6042 60.8336 26 -0.673345 -0.752084 48.1699 61.3401 27 -0.597837 -0.725736 48.6965 61.7739 28 -0.579818 -0.696684 49.1819 62.1779 29 -0.494296 -0.668209 49.6284 62.5082 30 -0.430783 -0.643345 50.0423 62.7853 31 -0.400478 -0.615839 50.4216 63.0319 32 -0.356675 -0.588793 50.7682 63.2419 33 -0.287682 -0.565108 51.0876 63.4045 34 -0.235722 -0.538836 51.3779 63.5315 35 -0.223144 -0.51293 51.641 63.646 36 -0.18633 -0.487364 51.8786 63.7368 37 -0.174353 -0.464904 52.0947 63.8179 38 -0.150823 -0.439913 52.2882 63.8842 39 -0.105361 -0.415193 52.4606 63.928 40 -0.105361 -0.393433 52.6154 63.9694 41 -0.105361 -0.369171 52.7517 64.0083 42 -0.105361 -0.345126 52.8708 64.0447 43 -0.0833816 -0.323919 52.9757 64.0717 44 -0.0304592 -0.300232 53.0659 64.0808 45 -0.0304592 -0.276714 53.1424 64.0892 46 0.0953102 -0.253347 53.2066 64.0651 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 5 47 0.0953102 -0.232693 53.2608 64.0429 48 0.0953102 -0.209575 53.3047 64.0229 49 0.0953102 -0.186567 53.3395 64.0052 50 0.262364 -0.166199 53.3671 63.9616 51 0.262364 -0.143367 53.3877 63.9239 52 0.262364 -0.12061 53.4022 63.8923 53 0.262364 -0.100433 53.4123 63.866 54 0.336472 -0.0777834 53.4183 63.8398 55 0.405465 -0.0551734 53.4214 63.8174 56 0.470004 -0.0350997 53.4226 63.8009 57 0.470004 -0.0125328 53.4228 63.795 58 0.470004 0.0125328 53.4229 63.8009 59 0.470004 0.0350997 53.4242 63.8174 60 0.470004 0.0551734 53.4272 63.8433 61 0.530628 0.0777834 53.4333 63.8846 62 0.587787 0.100433 53.4433 63.9436 63 0.587787 0.12061 53.4579 64.0145 64 0.641854 0.143367 53.4784 64.1066 65 0.693147 0.166199 53.5061 64.2218 66 0.788457 0.186567 53.5409 64.3689 67 0.832909 0.209575 53.5848 64.5434 68 0.875469 0.232693 53.6389 64.7471 69 0.875469 0.253347 53.7031 64.9689 70 0.955511 0.276714 53.7797 65.2333 71 0.955511 0.300232 53.8698 65.5202 72 1.02962 0.323919 53.9748 65.8537 73 1.09861 0.345126 54.0939 66.2329 74 1.1314 0.369171 54.2302 66.6506 75 1.19392 0.393433 54.385 67.1203 76 1.19392 0.415193 54.5573 67.616 77 1.22378 0.439913 54.7509 68.1544 78 1.25276 0.464904 54.967 68.7368 79 1.25276 0.487364 55.2045 69.3473 80 1.28093 0.51293 55.4676 70.0044 81 1.30833 0.538836 55.758 70.7093 82 1.38629 0.565108 56.0773 71.4927 83 1.38629 0.588793 56.424 72.309 84 1.4816 0.615839 56.8032 73.2214 85 1.50408 0.643345 57.2171 74.189 86 1.52606 0.668209 57.6636 75.2088 87 1.52606 0.696684 58.149 76.2719 88 1.54756 0.725736 58.6757 77.3951 89 1.58924 0.752084 59.2413 78.5903 90 1.62924 0.782366 59.8534 79.865 91 1.62924 0.813379 60.515 81.1902 92 1.64866 0.841621 61.2233 82.5777 93 1.66771 0.874218 61.9876 84.0356 94 1.70475 0.907769 62.8116 85.5832 95 1.80829 0.942375 63.6997 87.2872 96 1.80829 0.974114 64.6486 89.0487 97 1.82455 1.01104 65.6708 90.8934 98 1.8718 1.04939 66.772 92.8577 99 1.91692 1.08482 67.9489 94.9372 100 1.94591 1.12639 69.2176 97.129 101 1.96009 1.17 70.5865 99.4223 102 1.96009 1.21073 72.0524 101.795 103 2.05412 1.25908 73.6377 104.382 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 6 104 2.18605 1.31058 75.3553 107.247 105 2.24071 1.36581 77.2207 110.307 106 2.27213 1.41865 79.2333 113.531 107 2.3979 1.48328 81.4334 117.087 108 2.3979 1.55477 83.8507 120.815 109 2.48491 1.62576 86.4938 124.855 110 2.56495 1.71688 89.4415 129.259 111 2.77259 1.82501 92.7722 134.319 112 2.99573 1.94314 96.548 140.14 113 3.17805 2.12007 101.043 146.878 114 3.4012 2.40892 106.846 155.071 Data Set Standard Deviation = 1.42808 Numerator = 24047 Denominator = 24622.9 W Statistic = 0.976611 = 24047 / 24622.9 5% Critical value of 0.976 is less than 0.976611 Data is normally distributed at 95% level of significance 1% Critical value of 0.967 is less than 0.976611 Data is normally distributed at 99% level of significance DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 7 Parametric Prediction Interval Analysis Inter-Well Comparison Parameter: Copper Natural Logarithm Transformation Non-Detects Replaced with Detection Limit Inter-Well USEPA Formula 99% Comparison Number of comparisons = 5 Future Samples (k) = 5 = lesser of 5 or number of comparions Recent Dates = 1 Background Samples = 19 Background mean = -0.155407 Std Dev = 1.85054 99% confidence t = 2.55238 at 18 degree of freedom Well MW- 9 Date Samples Mean Interval Significant 8/14/2018 1 -1.56065 [0, 4.69059]FALSE Well MW-10 Date Samples Mean Interval Significant 8/14/2018 1 -2.30259 [0, 4.69059]FALSE Well MW-11 Date Samples Mean Interval Significant 8/14/2018 1 -2.04022 [0, 4.69059]FALSE Well MW-12 Date Samples Mean Interval Significant 8/14/2018 1 1.4816 [0, 4.69059]FALSE Well MW-17 Date Samples Mean Interval Significant 8/14/2018 1 -1.10866 [0, 4.69059]FALSE DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 8 Copper Multi-Well Time-Series Graph Sample DateConcentration (ppb)0 5 10 15 20 25 30 MW- 8 MW- 9 MW-10 MW-11 MW-12 MW-172/18/20088/18/20092/16/20118/16/20122/14/20148/15/20152/12/20178/14/2018DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 1 Concentrations (ppb) Parameter: Lead Original Data (Not Transformed) Non-Detects Replaced with Detection Limit Total Measurements: 114 Total Non-Detect: 11 Percent Non-Detects: 9.64912% Total Background Measurements: 19 There is 1 background location Loc.Meas.ND Date Conc.Original MW- 8 19 3 (15.7895%)2/18/2008 167 167 8/20/2009 ND<0.04 ND<0.04 8/24/2010 29 29 2/23/2011 28 28 8/24/2011 ND<0.02 ND<0.02 2/21/2012 ND<0.02 ND<0.02 8/28/2012 0.93 0.93 2/19/2013 1.6 1.6 8/28/2013 1.4 1.4 2/24/2014 2 2 8/5/2014 2.1 2.1 2/10/2015 1.8 1.8 8/25/2015 1.9 1.9 2/25/2016 2.3 2.3 8/10/2016 1.6 1.6 2/16/2017 1.4 1.4 8/16/2017 11 11 2/19/2018 1.2 1.2 8/14/2018 1.3 1.3 There are 5 compliance locations Loc.Meas.ND Date Conc.Original MW- 9 19 1 (5.26316%)2/18/2008 9.9 9.9 8/20/2009 0.1 0.1 8/24/2010 2.5 2.5 2/23/2011 0.1 0.1 8/24/2011 5.6 5.6 2/21/2012 1.2 1.2 8/28/2012 0.39 0.39 2/19/2013 0.64 0.64 8/28/2013 2.2 2.2 2/24/2014 3.6 3.6 8/5/2014 0.38 0.38 2/10/2015 2.2 2.2 8/25/2015 0.69 0.69 2/25/2016 0.54 0.54 8/10/2016 0.64 0.64 2/16/2017 ND<0.06 ND<0.06 8/16/2017 1.4 1.4 2/19/2018 0.11 0.11 8/14/2018 0.23 0.23 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 2 MW-10 19 2 (10.5263%)2/18/2008 20 20 8/20/2009 0.4 0.4 8/24/2010 0.1 0.1 2/23/2011 0.1 0.1 8/24/2011 0.54 0.54 2/21/2012 0.6 0.6 8/28/2012 0.32 0.32 2/19/2013 0.3 0.3 8/28/2013 2.3 2.3 2/24/2014 3.6 3.6 8/5/2014 0.64 0.64 2/10/2015 0.41 0.41 8/25/2015 0.48 0.48 2/25/2016 0.68 0.68 8/10/2016 0.24 0.24 2/16/2017 ND<0.06 ND<0.06 8/16/2017 0.38 0.38 2/19/2018 ND<0.08 ND<0.08 8/14/2018 0.03 0.03 MW-11 19 4 (21.0526%)2/18/2008 1.4 1.4 8/20/2009 1.3 1.3 8/24/2010 0.1 0.1 2/23/2011 1 1 8/24/2011 0.72 0.72 2/21/2012 0.16 0.16 8/28/2012 1.5 1.5 2/19/2013 ND<0.08 ND<0.08 8/28/2013 1.1 1.1 2/24/2014 2 2 8/5/2014 1.5 1.5 2/10/2015 0.22 0.22 8/25/2015 0.23 0.23 2/25/2016 2.2 2.2 8/10/2016 0.4 0.4 2/16/2017 ND<0.06 ND<0.06 8/16/2017 2.2 2.2 2/19/2018 ND<0.08 ND<0.08 8/14/2018 ND<0.03 ND<0.03 MW-12 19 0 (0%)2/18/2008 27 27 8/20/2009 0.5 0.5 8/24/2010 1.2 1.2 2/23/2011 1 1 8/24/2011 16 16 2/21/2012 4.4 4.4 8/28/2012 1.2 1.2 2/19/2013 2 2 8/28/2013 0.61 0.61 2/24/2014 2 2 8/5/2014 2 2 2/10/2015 0.41 0.41 8/25/2015 1.9 1.9 2/25/2016 3.4 3.4 8/10/2016 0.73 0.73 2/16/2017 0.66 0.66 8/16/2017 0.26 0.26 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 3 2/19/2018 2.9 2.9 8/14/2018 4.9 4.9 MW-17 19 1 (5.26316%)2/18/2008 10 10 8/20/2009 1.9 1.9 8/24/2010 0.9 0.9 2/23/2011 0.3 0.3 8/24/2011 4.2 4.2 2/21/2012 4.7 4.7 8/28/2012 0.5 0.5 2/19/2013 0.36 0.36 8/28/2013 0.76 0.76 2/24/2014 2.6 2.6 8/5/2014 0.56 0.56 2/10/2015 1.3 1.3 8/25/2015 0.7 0.7 2/25/2016 2.5 2.5 8/10/2016 0.74 0.74 2/16/2017 0.07 0.07 8/16/2017 0.72 0.72 2/19/2018 ND<0.08 ND<0.08 8/14/2018 0.42 0.42 There are 0 unused locations Loc.Meas.ND Date Conc.Original DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 4 Shapiro-Francia Test of Normality Parameter: Lead All Locations Normality Test of Parameter Concentrations Natural Logarithm Transformation Non-Detects Replaced with Detection Limit Total Number of Measurements = 114 i x(i)m(i)sum(m^2)sum(mx) 1 -3.91202 -2.40892 5.80292 9.42377 2 -3.91202 -2.12007 10.2976 17.7175 3 -3.50656 -1.94314 14.0734 24.5312 4 -3.50656 -1.82501 17.404 30.9307 5 -3.21888 -1.71688 20.3517 36.4572 6 -2.81341 -1.62576 22.9948 41.0311 7 -2.81341 -1.55477 25.4121 45.4053 8 -2.81341 -1.48328 27.6123 49.5784 9 -2.65926 -1.41865 29.6248 53.351 10 -2.52573 -1.36581 31.4903 56.8006 11 -2.52573 -1.31058 33.2079 60.1108 12 -2.52573 -1.25908 34.7932 63.2909 13 -2.52573 -1.21073 36.259 66.3489 14 -2.30259 -1.17 37.6279 69.0429 15 -2.30259 -1.12639 38.8967 71.6365 16 -2.30259 -1.08482 40.0735 74.1344 17 -2.30259 -1.04939 41.1748 76.5507 18 -2.30259 -1.01104 42.1969 78.8787 19 -2.20727 -0.974114 43.1458 81.0288 20 -1.83258 -0.942375 44.0339 82.7558 21 -1.51413 -0.907769 44.858 84.1303 22 -1.46968 -0.874218 45.6222 85.4151 23 -1.46968 -0.841621 46.3305 86.652 24 -1.42712 -0.813379 46.9921 87.8128 25 -1.34707 -0.782366 47.6042 88.8667 26 -1.20397 -0.752084 48.1699 89.7722 27 -1.20397 -0.725736 48.6965 90.646 28 -1.13943 -0.696684 49.1819 91.4398 29 -1.02165 -0.668209 49.6284 92.1225 30 -0.967584 -0.643345 50.0423 92.745 31 -0.967584 -0.615839 50.4216 93.3408 32 -0.941609 -0.588793 50.7682 93.8952 33 -0.916291 -0.565108 51.0876 94.413 34 -0.916291 -0.538836 51.3779 94.9068 35 -0.891598 -0.51293 51.641 95.3641 36 -0.891598 -0.487364 51.8786 95.7986 37 -0.867501 -0.464904 52.0947 96.2019 38 -0.733969 -0.439913 52.2882 96.5248 39 -0.693147 -0.415193 52.4606 96.8126 40 -0.693147 -0.393433 52.6154 97.0853 41 -0.616186 -0.369171 52.7517 97.3128 42 -0.616186 -0.345126 52.8708 97.5255 43 -0.579818 -0.323919 52.9757 97.7133 44 -0.510826 -0.300232 53.0659 97.8666 45 -0.494296 -0.276714 53.1424 98.0034 46 -0.446287 -0.253347 53.2066 98.1165 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 5 47 -0.446287 -0.232693 53.2608 98.2203 48 -0.446287 -0.209575 53.3047 98.3139 49 -0.415515 -0.186567 53.3395 98.3914 50 -0.385662 -0.166199 53.3671 98.4555 51 -0.371064 -0.143367 53.3877 98.5087 52 -0.356675 -0.12061 53.4022 98.5517 53 -0.328504 -0.100433 53.4123 98.5847 54 -0.328504 -0.0777834 53.4183 98.6102 55 -0.314711 -0.0551734 53.4214 98.6276 56 -0.301105 -0.0350997 53.4226 98.6382 57 -0.274437 -0.0125328 53.4228 98.6416 58 -0.105361 0.0125328 53.4229 98.6403 59 -0.0725707 0.0350997 53.4242 98.6378 60 0 0.0551734 53.4272 98.6378 61 0 0.0777834 53.4333 98.6378 62 0.0953102 0.100433 53.4433 98.6473 63 0.182322 0.12061 53.4579 98.6693 64 0.182322 0.143367 53.4784 98.6955 65 0.182322 0.166199 53.5061 98.7258 66 0.182322 0.186567 53.5409 98.7598 67 0.262364 0.209575 53.5848 98.8148 68 0.262364 0.232693 53.6389 98.8758 69 0.262364 0.253347 53.7031 98.9423 70 0.336472 0.276714 53.7797 99.0354 71 0.336472 0.300232 53.8698 99.1364 72 0.336472 0.323919 53.9748 99.2454 73 0.336472 0.345126 54.0939 99.3615 74 0.405465 0.369171 54.2302 99.5112 75 0.405465 0.393433 54.385 99.6707 76 0.470004 0.415193 54.5573 99.8659 77 0.470004 0.439913 54.7509 100.073 78 0.587787 0.464904 54.967 100.346 79 0.641854 0.487364 55.2045 100.659 80 0.641854 0.51293 55.4676 100.988 81 0.641854 0.538836 55.758 101.334 82 0.693147 0.565108 56.0773 101.725 83 0.693147 0.588793 56.424 102.134 84 0.693147 0.615839 56.8032 102.56 85 0.693147 0.643345 57.2171 103.006 86 0.693147 0.668209 57.6636 103.47 87 0.741937 0.696684 58.149 103.986 88 0.788457 0.725736 58.6757 104.559 89 0.788457 0.752084 59.2413 105.152 90 0.788457 0.782366 59.8534 105.769 91 0.788457 0.813379 60.515 106.41 92 0.832909 0.841621 61.2233 107.111 93 0.832909 0.874218 61.9876 107.839 94 0.916291 0.907769 62.8116 108.671 95 0.916291 0.942375 63.6997 109.534 96 0.955511 0.974114 64.6486 110.465 97 1.06471 1.01104 65.6708 111.541 98 1.22378 1.04939 66.772 112.826 99 1.28093 1.08482 67.9489 114.215 100 1.28093 1.12639 69.2176 115.658 101 1.43508 1.17 70.5865 117.337 102 1.4816 1.21073 72.0524 119.131 103 1.54756 1.25908 73.6377 121.08 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 6 104 1.58924 1.31058 75.3553 123.162 105 1.72277 1.36581 77.2207 125.515 106 2.29253 1.41865 79.2333 128.768 107 2.30259 1.48328 81.4334 132.183 108 2.3979 1.55477 83.8507 135.911 109 2.77259 1.62576 86.4938 140.419 110 2.99573 1.71688 89.4415 145.562 111 3.29584 1.82501 92.7722 151.577 112 3.3322 1.94314 96.548 158.052 113 3.3673 2.12007 101.043 165.191 114 5.11799 2.40892 106.846 177.52 Data Set Standard Deviation = 1.6347 Numerator = 31513.2 Denominator = 32263.4 W Statistic = 0.976748 = 31513.2 / 32263.4 5% Critical value of 0.976 is less than 0.976748 Data is normally distributed at 95% level of significance 1% Critical value of 0.967 is less than 0.976748 Data is normally distributed at 99% level of significance DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 7 Parametric Prediction Interval Analysis Inter-Well Comparison Parameter: Lead Natural Logarithm Transformation Non-Detects Replaced with Detection Limit Inter-Well USEPA Formula 99% Comparison Number of comparisons = 5 Future Samples (k) = 5 = lesser of 5 or number of comparions Recent Dates = 1 Background Samples = 19 Background mean = 0.455535 Std Dev = 2.29335 99% confidence t = 2.55238 at 18 degree of freedom Well MW- 9 Date Samples Mean Interval Significant 8/14/2018 1 -1.46968 [0, 6.46109]FALSE Well MW-10 Date Samples Mean Interval Significant 8/14/2018 1 -3.50656 [0, 6.46109]FALSE Well MW-11 Date Samples Mean Interval Significant 8/14/2018 1 -3.50656 [0, 6.46109]FALSE Well MW-12 Date Samples Mean Interval Significant 8/14/2018 1 1.58924 [0, 6.46109]FALSE Well MW-17 Date Samples Mean Interval Significant 8/14/2018 1 -0.867501 [0, 6.46109]FALSE DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 8 Lead Multi-Well Time-Series Graph Sample DateConcentration (ppb)0 50 100 150 200 MW- 8 MW- 9 MW-10 MW-11 MW-12 MW-172/18/20088/18/20092/16/20118/16/20122/14/20148/15/20152/12/20178/14/2018DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 1 Concentrations (ppb) Parameter: Molybdenum Original Data (Not Transformed) Non-Detects Replaced with Detection Limit Total Measurements: 48 Total Non-Detect: 36 Percent Non-Detects: 75% Total Background Measurements: 8 There is 1 background location Loc.Meas.ND Date Conc.Original MW- 8 8 6 (75%)10/24/2016 ND<1.4 ND<1.4 12/1/2016 2 2 1/4/2017 ND<1.4 ND<1.4 2/16/2017 ND<1.4 ND<1.4 4/20/2017 ND<1.24 ND<1.24 5/22/2017 ND<1.24 ND<1.24 6/29/2017 1.7 1.7 8/16/2017 ND<1.24 ND<1.24 There are 5 compliance locations Loc.Meas.ND Date Conc.Original MW- 9 8 7 (87.5%)10/24/2016 ND<1.4 ND<1.4 12/1/2016 ND<1.4 ND<1.4 1/4/2017 ND<1.4 ND<1.4 2/16/2017 ND<1.4 ND<1.4 4/20/2017 ND<1.24 ND<1.24 5/22/2017 ND<1.24 ND<1.24 6/29/2017 1.3 1.3 8/16/2017 ND<1.24 ND<1.24 MW-10 8 7 (87.5%)10/24/2016 ND<1.4 ND<1.4 12/1/2016 ND<1.4 ND<1.4 1/4/2017 2 2 2/16/2017 ND<1.4 ND<1.4 4/20/2017 ND<1.24 ND<1.24 5/22/2017 ND<1.24 ND<1.24 6/29/2017 ND<1.24 ND<1.24 8/16/2017 ND<1.24 ND<1.24 MW-11 8 2 (25%)10/24/2016 ND<1.4 ND<1.4 12/1/2016 2 2 1/4/2017 2 2 2/16/2017 ND<1.4 ND<1.4 4/20/2017 1.6 1.6 5/22/2017 1.3 1.3 6/29/2017 1.7 1.7 8/16/2017 3 3 MW-12 8 7 (87.5%)10/24/2016 ND<1.4 ND<1.4 12/1/2016 2 2 1/4/2017 ND<1.4 ND<1.4 2/16/2017 ND<1.4 ND<1.4 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 2 4/20/2017 ND<1.24 ND<1.24 5/22/2017 ND<1.24 ND<1.24 6/29/2017 ND<1.24 ND<1.24 8/16/2017 ND<1.24 ND<1.24 MW-17 8 7 (87.5%)10/24/2016 ND<1.4 ND<1.4 12/1/2016 ND<1.4 ND<1.4 1/4/2017 1 1 2/16/2017 ND<1.4 ND<1.4 4/20/2017 ND<1.24 ND<1.24 5/22/2017 ND<1.24 ND<1.24 6/29/2017 ND<1.24 ND<1.24 8/16/2017 ND<1.24 ND<1.24 There are 0 unused locations Loc.Meas.ND Date Conc.Original DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 3 Non-Parametric Tolerance Interval Parameter: Molybdenum Original Data (Not Transformed) Non-Detects Replaced with Detection Limit Total Percent Non-Detects = 75% Background measurements (n) = 8 Maximum Background Concentration = 2 Minimum Coverage = 68.8% Average Coverage = 88.8889% Location Date Value Significant MW- 9 10/24/2016 ND<1.4 FALSE MW- 9 12/1/2016 ND<1.4 FALSE MW- 9 1/4/2017 ND<1.4 FALSE MW- 9 2/16/2017 ND<1.4 FALSE MW- 9 4/20/2017 ND<1.24 FALSE MW- 9 5/22/2017 ND<1.24 FALSE MW- 9 6/29/2017 1.3 FALSE MW- 9 8/16/2017 ND<1.24 FALSE MW-10 10/24/2016 ND<1.4 FALSE MW-10 12/1/2016 ND<1.4 FALSE MW-10 1/4/2017 2 FALSE MW-10 2/16/2017 ND<1.4 FALSE MW-10 4/20/2017 ND<1.24 FALSE MW-10 5/22/2017 ND<1.24 FALSE MW-10 6/29/2017 ND<1.24 FALSE MW-10 8/16/2017 ND<1.24 FALSE MW-11 10/24/2016 ND<1.4 FALSE MW-11 12/1/2016 2 FALSE MW-11 1/4/2017 2 FALSE MW-11 2/16/2017 ND<1.4 FALSE MW-11 4/20/2017 1.6 FALSE MW-11 5/22/2017 1.3 FALSE MW-11 6/29/2017 1.7 FALSE MW-11 8/16/2017 3 TRUE MW-12 10/24/2016 ND<1.4 FALSE MW-12 12/1/2016 2 FALSE MW-12 1/4/2017 ND<1.4 FALSE MW-12 2/16/2017 ND<1.4 FALSE MW-12 4/20/2017 ND<1.24 FALSE MW-12 5/22/2017 ND<1.24 FALSE MW-12 6/29/2017 ND<1.24 FALSE MW-12 8/16/2017 ND<1.24 FALSE MW-17 10/24/2016 ND<1.4 FALSE MW-17 12/1/2016 ND<1.4 FALSE MW-17 1/4/2017 1 FALSE DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 4 MW-17 2/16/2017 ND<1.4 FALSE MW-17 4/20/2017 ND<1.24 FALSE MW-17 5/22/2017 ND<1.24 FALSE MW-17 6/29/2017 ND<1.24 FALSE MW-17 8/16/2017 ND<1.24 FALSE DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 5 Sen's Slope Analysis Parameter: Molybdenum Location: MW-11 Original Data (Not Transformed) Non-Detects Replaced with Detection Limit 90% Confidence Level Xj Xk (Xj - Xk)/(j-k)Q 2 (12/1/2016)ND<1.4 (10/24/2016)(2 - 1.4)/(2 - 1)0.6 2 (1/4/2017)ND<1.4 (10/24/2016)(2 - 1.4)/(3 - 1)0.3 ND<1.4 (2/16/2017)ND<1.4 (10/24/2016)(1.4 - 1.4)/(4 - 1)0 1.6 (4/20/2017)ND<1.4 (10/24/2016)(1.6 - 1.4)/(5 - 1)0.05 1.3 (5/22/2017)ND<1.4 (10/24/2016)(1.3 - 1.4)/(6 - 1)-0.02 1.7 (6/29/2017)ND<1.4 (10/24/2016)(1.7 - 1.4)/(7 - 1)0.05 3 (8/16/2017)ND<1.4 (10/24/2016)(3 - 1.4)/(8 - 1)0.228571 2 (1/4/2017)2 (12/1/2016)(2 - 2)/(3 - 2)0 ND<1.4 (2/16/2017)2 (12/1/2016)(1.4 - 2)/(4 - 2)-0.3 1.6 (4/20/2017)2 (12/1/2016)(1.6 - 2)/(5 - 2)-0.133333 1.3 (5/22/2017)2 (12/1/2016)(1.3 - 2)/(6 - 2)-0.175 1.7 (6/29/2017)2 (12/1/2016)(1.7 - 2)/(7 - 2)-0.06 3 (8/16/2017)2 (12/1/2016)(3 - 2)/(8 - 2)0.166667 ND<1.4 (2/16/2017)2 (1/4/2017)(1.4 - 2)/(4 - 3)-0.6 1.6 (4/20/2017)2 (1/4/2017)(1.6 - 2)/(5 - 3)-0.2 1.3 (5/22/2017)2 (1/4/2017)(1.3 - 2)/(6 - 3)-0.233333 1.7 (6/29/2017)2 (1/4/2017)(1.7 - 2)/(7 - 3)-0.075 3 (8/16/2017)2 (1/4/2017)(3 - 2)/(8 - 3)0.2 1.6 (4/20/2017)ND<1.4 (2/16/2017)(1.6 - 1.4)/(5 - 4)0.2 1.3 (5/22/2017)ND<1.4 (2/16/2017)(1.3 - 1.4)/(6 - 4)-0.05 1.7 (6/29/2017)ND<1.4 (2/16/2017)(1.7 - 1.4)/(7 - 4)0.1 3 (8/16/2017)ND<1.4 (2/16/2017)(3 - 1.4)/(8 - 4)0.4 1.3 (5/22/2017)1.6 (4/20/2017)(1.3 - 1.6)/(6 - 5)-0.3 1.7 (6/29/2017)1.6 (4/20/2017)(1.7 - 1.6)/(7 - 5)0.05 3 (8/16/2017)1.6 (4/20/2017)(3 - 1.6)/(8 - 5)0.466667 1.7 (6/29/2017)1.3 (5/22/2017)(1.7 - 1.3)/(7 - 6)0.4 3 (8/16/2017)1.3 (5/22/2017)(3 - 1.3)/(8 - 6)0.85 3 (8/16/2017)1.7 (6/29/2017)(3 - 1.7)/(8 - 7)1.3 Number of Q values = 28 Ordered Q Values n Q 1 -0.6 2 -0.3 3 -0.3 4 -0.233333 5 -0.2 6 -0.175 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 6 7 -0.133333 8 -0.075 9 -0.06 10 -0.05 11 -0.02 12 0 13 0 14 0.05 15 0.05 16 0.05 17 0.1 18 0.166667 19 0.2 20 0.2 21 0.228571 22 0.3 23 0.4 24 0.4 25 0.466667 26 0.6 27 0.85 28 1.3 Sen's Estimator (Median Q) is 0.05 Tied Group Value Members 1 1.4 2 2 2 2 Time Period Observations 10/24/2016 1 12/1/2016 1 1/4/2017 1 2/16/2017 1 4/20/2017 1 5/22/2017 1 6/29/2017 1 8/16/2017 1 There are 0 time periods with multiple data A = 36 B = 0 C = 0 D = 0 E = 4 F = 0 a = 1176 b = 3024 c = 112 Group Variance = 63.3333 For 90% confidence interval (two-tailed), Z at (1-0.9)/2 = 1.64485 C = 13.0901 M1 = (28 - 13.0901)/2.0 = 7.45495 M2 = (28 + 13.0901)/2.0 + 1 = 21.5451 Lower limit is -0.133333 = Q(7) Upper limit is 0.3 = Q(22) -0.133333 < 0 < 0.3 indicating no trend in data. DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 7 Molybdenum Multi-Well Time-Series Graph Sample DateConcentration (ppb)0 0.5 1 1.5 2 2.5 3 MW- 8 MW- 9 MW-10 MW-11 MW-12 MW-1710/24/201612/5/20161/16/20172/27/20174/11/20175/23/20177/4/20178/16/2017DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 1 Concentrations (ppb) Parameter: PH (field measurement) Original Data (Not Transformed) Non-Detects Replaced with Detection Limit Total Measurements: 114 Total Non-Detect: 3 Percent Non-Detects: 2.63158% Total Background Measurements: 19 There is 1 background location Loc.Meas.ND Date Conc.Original MW- 8 19 3 (15.7895%)2/18/2008 5.4 5.4 8/20/2009 ND<0 ND<0 8/24/2010 4.8 4.8 2/23/2011 4.9 4.9 8/24/2011 ND<0 ND<0 2/21/2012 ND<0 ND<0 8/28/2012 4.7 4.7 2/19/2013 4.8 4.8 8/28/2013 5 5 2/24/2014 4.6 4.6 8/5/2014 4.5 4.5 2/10/2015 5 5 8/25/2015 4.8 4.8 2/25/2016 4.2 4.2 8/10/2016 4.9 4.9 2/16/2017 4.4 4.4 8/16/2017 4.7 4.7 2/19/2018 4.4 4.4 8/14/2018 4.7 4.7 There are 5 compliance locations Loc.Meas.ND Date Conc.Original MW- 9 19 0 (0%)2/18/2008 5.3 5.3 8/20/2009 5.1 5.1 8/24/2010 5.3 5.3 2/23/2011 5.2 5.2 8/24/2011 5 5 2/21/2012 5.3 5.3 8/28/2012 5.3 5.3 2/19/2013 4.9 4.9 8/28/2013 3.9 3.9 2/24/2014 5 5 8/5/2014 5 5 2/10/2015 5.2 5.2 8/25/2015 5.2 5.2 2/25/2016 5.7 5.7 8/10/2016 5.4 5.4 2/16/2017 5.3 5.3 8/16/2017 5.2 5.2 2/19/2018 4.7 4.7 8/14/2018 5.1 5.1 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 2 MW-10 19 0 (0%)2/18/2008 5.6 5.6 8/20/2009 5.3 5.3 8/24/2010 4.5 4.5 2/23/2011 5.7 5.7 8/24/2011 5.2 5.2 2/21/2012 5.7 5.7 8/28/2012 5.3 5.3 2/19/2013 4.8 4.8 8/28/2013 5.5 5.5 2/24/2014 5.4 5.4 8/5/2014 5.2 5.2 2/10/2015 5.6 5.6 8/25/2015 5.4 5.4 2/25/2016 6.1 6.1 8/10/2016 5.6 5.6 2/16/2017 5.5 5.5 8/16/2017 5.4 5.4 2/19/2018 5.2 5.2 8/14/2018 5.3 5.3 MW-11 19 0 (0%)2/18/2008 6.5 6.5 8/20/2009 6.1 6.1 8/24/2010 6.4 6.4 2/23/2011 6.2 6.2 8/24/2011 6 6 2/21/2012 6.5 6.5 8/28/2012 6.4 6.4 2/19/2013 5.9 5.9 8/28/2013 6.5 6.5 2/24/2014 6.2 6.2 8/5/2014 6.2 6.2 2/10/2015 6.2 6.2 8/25/2015 6.3 6.3 2/25/2016 6.6 6.6 8/10/2016 6.4 6.4 2/16/2017 6.1 6.1 8/16/2017 6.3 6.3 2/19/2018 5.8 5.8 8/14/2018 6.1 6.1 MW-12 19 0 (0%)2/18/2008 4.9 4.9 8/20/2009 4.6 4.6 8/24/2010 5.2 5.2 2/23/2011 4.9 4.9 8/24/2011 4.5 4.5 2/21/2012 5.1 5.1 8/28/2012 4.7 4.7 2/19/2013 4.9 4.9 8/28/2013 1.6 1.6 2/24/2014 4.6 4.6 8/5/2014 4.6 4.6 2/10/2015 4.7 4.7 8/25/2015 4.6 4.6 2/25/2016 5.1 5.1 8/10/2016 4.8 4.8 2/16/2017 4.4 4.4 8/16/2017 4.7 4.7 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 3 2/19/2018 4.9 4.9 8/14/2018 4.6 4.6 MW-17 19 0 (0%)2/18/2008 5.2 5.2 8/20/2009 5.1 5.1 8/24/2010 5.2 5.2 2/23/2011 5.3 5.3 8/24/2011 5.1 5.1 2/21/2012 5.5 5.5 8/28/2012 5.4 5.4 2/19/2013 5.1 5.1 8/28/2013 5 5 2/24/2014 5 5 8/5/2014 5 5 2/10/2015 5.2 5.2 8/25/2015 5.2 5.2 2/25/2016 5.3 5.3 8/10/2016 5 5 2/16/2017 5.1 5.1 8/16/2017 5 5 2/19/2018 4.9 4.9 8/14/2018 4.7 4.7 There are 0 unused locations Loc.Meas.ND Date Conc.Original DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 4 Wilcoxon Non-Parametric Analysis (Inter-Well) Parameter: PH (field measurement) Location: MW- 9 Original Data (Not Transformed) Non-Detects Replaced with Detection Limit Total non detects is 3 Non detect rank is 2 Wilcoxon Ranks Location Date Conc.Rank MW- 8 2/18/2008 5.4 36 8/20/2009 ND<0 2 8/24/2010 4.8 14 2/23/2011 4.9 17 8/24/2011 ND<0 2 2/21/2012 ND<0 2 8/28/2012 4.7 10 2/19/2013 4.8 15 8/28/2013 5 20 2/24/2014 4.6 9 8/5/2014 4.5 8 2/10/2015 5 21 8/25/2015 4.8 16 2/25/2016 4.2 5 8/10/2016 4.9 18 2/16/2017 4.4 6 8/16/2017 4.7 11 2/19/2018 4.4 7 8/14/2018 4.7 12 MW- 9 2/18/2008 5.3 31 8/20/2009 5.1 25 8/24/2010 5.3 32 2/23/2011 5.2 27 8/24/2011 5 22 2/21/2012 5.3 33 8/28/2012 5.3 34 2/19/2013 4.9 19 8/28/2013 3.9 4 2/24/2014 5 23 8/5/2014 5 24 2/10/2015 5.2 28 8/25/2015 5.2 29 2/25/2016 5.7 38 8/10/2016 5.4 37 2/16/2017 5.3 35 8/16/2017 5.2 30 2/19/2018 4.7 13 8/14/2018 5.1 26 The Wilcoxon Statistic is 320 The Expected value is is 180.5 The Standard Deviation is 34.2527 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 5 The Z Score is 4.05807 The Standard Deviation adjusted for ties is 34.2452 The Z Score adjusted for ties is 4.05896 4.05807 > 2.326 indicating possible contamination at 1% significance level 4.05896 > 2.326 indicating possible contamination at 1% significance level when adjusted for ties DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 6 Wilcoxon Non-Parametric Analysis (Inter-Well) Parameter: PH (field measurement) Location: MW-10 Original Data (Not Transformed) Non-Detects Replaced with Detection Limit Total non detects is 3 Non detect rank is 2 Wilcoxon Ranks Location Date Conc.Rank MW- 8 2/18/2008 5.4 27 8/20/2009 ND<0 2 8/24/2010 4.8 13 2/23/2011 4.9 17 8/24/2011 ND<0 2 2/21/2012 ND<0 2 8/28/2012 4.7 10 2/19/2013 4.8 14 8/28/2013 5 19 2/24/2014 4.6 9 8/5/2014 4.5 7 2/10/2015 5 20 8/25/2015 4.8 15 2/25/2016 4.2 4 8/10/2016 4.9 18 2/16/2017 4.4 5 8/16/2017 4.7 11 2/19/2018 4.4 6 8/14/2018 4.7 12 MW-10 2/18/2008 5.6 33 8/20/2009 5.3 24 8/24/2010 4.5 8 2/23/2011 5.7 36 8/24/2011 5.2 21 2/21/2012 5.7 37 8/28/2012 5.3 25 2/19/2013 4.8 16 8/28/2013 5.5 31 2/24/2014 5.4 28 8/5/2014 5.2 22 2/10/2015 5.6 34 8/25/2015 5.4 29 2/25/2016 6.1 38 8/10/2016 5.6 35 2/16/2017 5.5 32 8/16/2017 5.4 30 2/19/2018 5.2 23 8/14/2018 5.3 26 The Wilcoxon Statistic is 338 The Expected value is is 180.5 The Standard Deviation is 34.2527 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 7 The Z Score is 4.58358 The Standard Deviation adjusted for ties is 34.2452 The Z Score adjusted for ties is 4.58458 4.58358 > 2.326 indicating possible contamination at 1% significance level 4.58458 > 2.326 indicating possible contamination at 1% significance level when adjusted for ties DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 8 Wilcoxon Non-Parametric Analysis (Inter-Well) Parameter: PH (field measurement) Location: MW-11 Original Data (Not Transformed) Non-Detects Replaced with Detection Limit Total non detects is 3 Non detect rank is 2 Wilcoxon Ranks Location Date Conc.Rank MW- 8 2/18/2008 5.4 19 8/20/2009 ND<0 2 8/24/2010 4.8 12 2/23/2011 4.9 15 8/24/2011 ND<0 2 2/21/2012 ND<0 2 8/28/2012 4.7 9 2/19/2013 4.8 13 8/28/2013 5 17 2/24/2014 4.6 8 8/5/2014 4.5 7 2/10/2015 5 18 8/25/2015 4.8 14 2/25/2016 4.2 4 8/10/2016 4.9 16 2/16/2017 4.4 5 8/16/2017 4.7 10 2/19/2018 4.4 6 8/14/2018 4.7 11 MW-11 2/18/2008 6.5 35 8/20/2009 6.1 23 8/24/2010 6.4 32 2/23/2011 6.2 26 8/24/2011 6 22 2/21/2012 6.5 36 8/28/2012 6.4 33 2/19/2013 5.9 21 8/28/2013 6.5 37 2/24/2014 6.2 27 8/5/2014 6.2 28 2/10/2015 6.2 29 8/25/2015 6.3 30 2/25/2016 6.6 38 8/10/2016 6.4 34 2/16/2017 6.1 24 8/16/2017 6.3 31 2/19/2018 5.8 20 8/14/2018 6.1 25 The Wilcoxon Statistic is 361 The Expected value is is 180.5 The Standard Deviation is 34.2527 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 9 The Z Score is 5.25505 The Standard Deviation adjusted for ties is 34.2452 The Z Score adjusted for ties is 5.2562 5.25505 > 2.326 indicating possible contamination at 1% significance level 5.2562 > 2.326 indicating possible contamination at 1% significance level when adjusted for ties DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 10 Wilcoxon Non-Parametric Analysis (Inter-Well) Parameter: PH (field measurement) Location: MW-12 Original Data (Not Transformed) Non-Detects Replaced with Detection Limit Total non detects is 3 Non detect rank is 2 Wilcoxon Ranks Location Date Conc.Rank MW- 8 2/18/2008 5.4 38 8/20/2009 ND<0 2 8/24/2010 4.8 23 2/23/2011 4.9 27 8/24/2011 ND<0 2 2/21/2012 ND<0 2 8/28/2012 4.7 17 2/19/2013 4.8 24 8/28/2013 5 33 2/24/2014 4.6 11 8/5/2014 4.5 9 2/10/2015 5 34 8/25/2015 4.8 25 2/25/2016 4.2 5 8/10/2016 4.9 28 2/16/2017 4.4 6 8/16/2017 4.7 18 2/19/2018 4.4 7 8/14/2018 4.7 19 MW-12 2/18/2008 4.9 29 8/20/2009 4.6 12 8/24/2010 5.2 37 2/23/2011 4.9 30 8/24/2011 4.5 10 2/21/2012 5.1 35 8/28/2012 4.7 20 2/19/2013 4.9 31 8/28/2013 1.6 4 2/24/2014 4.6 13 8/5/2014 4.6 14 2/10/2015 4.7 21 8/25/2015 4.6 15 2/25/2016 5.1 36 8/10/2016 4.8 26 2/16/2017 4.4 8 8/16/2017 4.7 22 2/19/2018 4.9 32 8/14/2018 4.6 16 The Wilcoxon Statistic is 221 The Expected value is is 180.5 The Standard Deviation is 34.2527 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 11 The Z Score is 1.16779 The Standard Deviation adjusted for ties is 34.2452 The Z Score adjusted for ties is 1.16805 1.16779 < 2.326 indicating no contamination at 1% significance level 1.16805 < 2.326 indicating no contamination at 1% significance level when adjusted for ties DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 12 Wilcoxon Non-Parametric Analysis (Inter-Well) Parameter: PH (field measurement) Location: MW-17 Original Data (Not Transformed) Non-Detects Replaced with Detection Limit Total non detects is 3 Non detect rank is 2 Wilcoxon Ranks Location Date Conc.Rank MW- 8 2/18/2008 5.4 36 8/20/2009 ND<0 2 8/24/2010 4.8 13 2/23/2011 4.9 16 8/24/2011 ND<0 2 2/21/2012 ND<0 2 8/28/2012 4.7 9 2/19/2013 4.8 14 8/28/2013 5 19 2/24/2014 4.6 8 8/5/2014 4.5 7 2/10/2015 5 20 8/25/2015 4.8 15 2/25/2016 4.2 4 8/10/2016 4.9 17 2/16/2017 4.4 5 8/16/2017 4.7 10 2/19/2018 4.4 6 8/14/2018 4.7 11 MW-17 2/18/2008 5.2 30 8/20/2009 5.1 26 8/24/2010 5.2 31 2/23/2011 5.3 34 8/24/2011 5.1 27 2/21/2012 5.5 38 8/28/2012 5.4 37 2/19/2013 5.1 28 8/28/2013 5 21 2/24/2014 5 22 8/5/2014 5 23 2/10/2015 5.2 32 8/25/2015 5.2 33 2/25/2016 5.3 35 8/10/2016 5 24 2/16/2017 5.1 29 8/16/2017 5 25 2/19/2018 4.9 18 8/14/2018 4.7 12 The Wilcoxon Statistic is 335 The Expected value is is 180.5 The Standard Deviation is 34.2527 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 13 The Z Score is 4.49599 The Standard Deviation adjusted for ties is 34.2452 The Z Score adjusted for ties is 4.49698 4.49599 > 2.326 indicating possible contamination at 1% significance level 4.49698 > 2.326 indicating possible contamination at 1% significance level when adjusted for ties DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 14 Sen's Slope Analysis Parameter: PH (field measurement) Location: MW- 9 Original Data (Not Transformed) Non-Detects Replaced with Detection Limit 90% Confidence Level Xj Xk (Xj - Xk)/(j-k)Q 5.1 (8/20/2009)5.3 (2/18/2008)(5.1 - 5.3)/(2 - 1)-0.2 5.3 (8/24/2010)5.3 (2/18/2008)(5.3 - 5.3)/(3 - 1)0 5.2 (2/23/2011)5.3 (2/18/2008)(5.2 - 5.3)/(4 - 1)-0.0333333 5 (8/24/2011)5.3 (2/18/2008)(5 - 5.3)/(5 - 1)-0.075 5.3 (2/21/2012)5.3 (2/18/2008)(5.3 - 5.3)/(6 - 1)0 5.3 (8/28/2012)5.3 (2/18/2008)(5.3 - 5.3)/(7 - 1)0 4.9 (2/19/2013)5.3 (2/18/2008)(4.9 - 5.3)/(8 - 1)-0.0571429 3.9 (8/28/2013)5.3 (2/18/2008)(3.9 - 5.3)/(9 - 1)-0.175 5 (2/24/2014)5.3 (2/18/2008)(5 - 5.3)/(10 - 1)-0.0333333 5 (8/5/2014)5.3 (2/18/2008)(5 - 5.3)/(11 - 1)-0.03 5.2 (2/10/2015)5.3 (2/18/2008)(5.2 - 5.3)/(12 - 1)-0.00909091 5.2 (8/25/2015)5.3 (2/18/2008)(5.2 - 5.3)/(13 - 1)-0.00833333 5.7 (2/25/2016)5.3 (2/18/2008)(5.7 - 5.3)/(14 - 1)0.0307692 5.4 (8/10/2016)5.3 (2/18/2008)(5.4 - 5.3)/(15 - 1)0.00714286 5.3 (2/16/2017)5.3 (2/18/2008)(5.3 - 5.3)/(16 - 1)0 5.2 (8/16/2017)5.3 (2/18/2008)(5.2 - 5.3)/(17 - 1)-0.00625 4.7 (2/19/2018)5.3 (2/18/2008)(4.7 - 5.3)/(18 - 1)-0.0352941 5.1 (8/14/2018)5.3 (2/18/2008)(5.1 - 5.3)/(19 - 1)-0.0111111 5.3 (8/24/2010)5.1 (8/20/2009)(5.3 - 5.1)/(3 - 2)0.2 5.2 (2/23/2011)5.1 (8/20/2009)(5.2 - 5.1)/(4 - 2)0.05 5 (8/24/2011)5.1 (8/20/2009)(5 - 5.1)/(5 - 2)-0.0333333 5.3 (2/21/2012)5.1 (8/20/2009)(5.3 - 5.1)/(6 - 2)0.05 5.3 (8/28/2012)5.1 (8/20/2009)(5.3 - 5.1)/(7 - 2)0.04 4.9 (2/19/2013)5.1 (8/20/2009)(4.9 - 5.1)/(8 - 2)-0.0333333 3.9 (8/28/2013)5.1 (8/20/2009)(3.9 - 5.1)/(9 - 2)-0.171429 5 (2/24/2014)5.1 (8/20/2009)(5 - 5.1)/(10 - 2)-0.0125 5 (8/5/2014)5.1 (8/20/2009)(5 - 5.1)/(11 - 2)-0.0111111 5.2 (2/10/2015)5.1 (8/20/2009)(5.2 - 5.1)/(12 - 2)0.01 5.2 (8/25/2015)5.1 (8/20/2009)(5.2 - 5.1)/(13 - 2)0.00909091 5.7 (2/25/2016)5.1 (8/20/2009)(5.7 - 5.1)/(14 - 2)0.05 5.4 (8/10/2016)5.1 (8/20/2009)(5.4 - 5.1)/(15 - 2)0.0230769 5.3 (2/16/2017)5.1 (8/20/2009)(5.3 - 5.1)/(16 - 2)0.0142857 5.2 (8/16/2017)5.1 (8/20/2009)(5.2 - 5.1)/(17 - 2)0.00666667 4.7 (2/19/2018)5.1 (8/20/2009)(4.7 - 5.1)/(18 - 2)-0.025 5.1 (8/14/2018)5.1 (8/20/2009)(5.1 - 5.1)/(19 - 2)0 5.2 (2/23/2011)5.3 (8/24/2010)(5.2 - 5.3)/(4 - 3)-0.1 5 (8/24/2011)5.3 (8/24/2010)(5 - 5.3)/(5 - 3)-0.15 5.3 (2/21/2012)5.3 (8/24/2010)(5.3 - 5.3)/(6 - 3)0 5.3 (8/28/2012)5.3 (8/24/2010)(5.3 - 5.3)/(7 - 3)0 4.9 (2/19/2013)5.3 (8/24/2010)(4.9 - 5.3)/(8 - 3)-0.08 3.9 (8/28/2013)5.3 (8/24/2010)(3.9 - 5.3)/(9 - 3)-0.233333 5 (2/24/2014)5.3 (8/24/2010)(5 - 5.3)/(10 - 3)-0.0428571 5 (8/5/2014)5.3 (8/24/2010)(5 - 5.3)/(11 - 3)-0.0375 5.2 (2/10/2015)5.3 (8/24/2010)(5.2 - 5.3)/(12 - 3)-0.0111111 5.2 (8/25/2015)5.3 (8/24/2010)(5.2 - 5.3)/(13 - 3)-0.01 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 15 5.7 (2/25/2016)5.3 (8/24/2010)(5.7 - 5.3)/(14 - 3)0.0363636 5.4 (8/10/2016)5.3 (8/24/2010)(5.4 - 5.3)/(15 - 3)0.00833333 5.3 (2/16/2017)5.3 (8/24/2010)(5.3 - 5.3)/(16 - 3)0 5.2 (8/16/2017)5.3 (8/24/2010)(5.2 - 5.3)/(17 - 3)-0.00714286 4.7 (2/19/2018)5.3 (8/24/2010)(4.7 - 5.3)/(18 - 3)-0.04 5.1 (8/14/2018)5.3 (8/24/2010)(5.1 - 5.3)/(19 - 3)-0.0125 5 (8/24/2011)5.2 (2/23/2011)(5 - 5.2)/(5 - 4)-0.2 5.3 (2/21/2012)5.2 (2/23/2011)(5.3 - 5.2)/(6 - 4)0.05 5.3 (8/28/2012)5.2 (2/23/2011)(5.3 - 5.2)/(7 - 4)0.0333333 4.9 (2/19/2013)5.2 (2/23/2011)(4.9 - 5.2)/(8 - 4)-0.075 3.9 (8/28/2013)5.2 (2/23/2011)(3.9 - 5.2)/(9 - 4)-0.26 5 (2/24/2014)5.2 (2/23/2011)(5 - 5.2)/(10 - 4)-0.0333333 5 (8/5/2014)5.2 (2/23/2011)(5 - 5.2)/(11 - 4)-0.0285714 5.2 (2/10/2015)5.2 (2/23/2011)(5.2 - 5.2)/(12 - 4)0 5.2 (8/25/2015)5.2 (2/23/2011)(5.2 - 5.2)/(13 - 4)0 5.7 (2/25/2016)5.2 (2/23/2011)(5.7 - 5.2)/(14 - 4)0.05 5.4 (8/10/2016)5.2 (2/23/2011)(5.4 - 5.2)/(15 - 4)0.0181818 5.3 (2/16/2017)5.2 (2/23/2011)(5.3 - 5.2)/(16 - 4)0.00833333 5.2 (8/16/2017)5.2 (2/23/2011)(5.2 - 5.2)/(17 - 4)0 4.7 (2/19/2018)5.2 (2/23/2011)(4.7 - 5.2)/(18 - 4)-0.0357143 5.1 (8/14/2018)5.2 (2/23/2011)(5.1 - 5.2)/(19 - 4)-0.00666667 5.3 (2/21/2012)5 (8/24/2011)(5.3 - 5)/(6 - 5)0.3 5.3 (8/28/2012)5 (8/24/2011)(5.3 - 5)/(7 - 5)0.15 4.9 (2/19/2013)5 (8/24/2011)(4.9 - 5)/(8 - 5)-0.0333333 3.9 (8/28/2013)5 (8/24/2011)(3.9 - 5)/(9 - 5)-0.275 5 (2/24/2014)5 (8/24/2011)(5 - 5)/(10 - 5)0 5 (8/5/2014)5 (8/24/2011)(5 - 5)/(11 - 5)0 5.2 (2/10/2015)5 (8/24/2011)(5.2 - 5)/(12 - 5)0.0285714 5.2 (8/25/2015)5 (8/24/2011)(5.2 - 5)/(13 - 5)0.025 5.7 (2/25/2016)5 (8/24/2011)(5.7 - 5)/(14 - 5)0.0777778 5.4 (8/10/2016)5 (8/24/2011)(5.4 - 5)/(15 - 5)0.04 5.3 (2/16/2017)5 (8/24/2011)(5.3 - 5)/(16 - 5)0.0272727 5.2 (8/16/2017)5 (8/24/2011)(5.2 - 5)/(17 - 5)0.0166667 4.7 (2/19/2018)5 (8/24/2011)(4.7 - 5)/(18 - 5)-0.0230769 5.1 (8/14/2018)5 (8/24/2011)(5.1 - 5)/(19 - 5)0.00714286 5.3 (8/28/2012)5.3 (2/21/2012)(5.3 - 5.3)/(7 - 6)0 4.9 (2/19/2013)5.3 (2/21/2012)(4.9 - 5.3)/(8 - 6)-0.2 3.9 (8/28/2013)5.3 (2/21/2012)(3.9 - 5.3)/(9 - 6)-0.466667 5 (2/24/2014)5.3 (2/21/2012)(5 - 5.3)/(10 - 6)-0.075 5 (8/5/2014)5.3 (2/21/2012)(5 - 5.3)/(11 - 6)-0.06 5.2 (2/10/2015)5.3 (2/21/2012)(5.2 - 5.3)/(12 - 6)-0.0166667 5.2 (8/25/2015)5.3 (2/21/2012)(5.2 - 5.3)/(13 - 6)-0.0142857 5.7 (2/25/2016)5.3 (2/21/2012)(5.7 - 5.3)/(14 - 6)0.05 5.4 (8/10/2016)5.3 (2/21/2012)(5.4 - 5.3)/(15 - 6)0.0111111 5.3 (2/16/2017)5.3 (2/21/2012)(5.3 - 5.3)/(16 - 6)0 5.2 (8/16/2017)5.3 (2/21/2012)(5.2 - 5.3)/(17 - 6)-0.00909091 4.7 (2/19/2018)5.3 (2/21/2012)(4.7 - 5.3)/(18 - 6)-0.05 5.1 (8/14/2018)5.3 (2/21/2012)(5.1 - 5.3)/(19 - 6)-0.0153846 4.9 (2/19/2013)5.3 (8/28/2012)(4.9 - 5.3)/(8 - 7)-0.4 3.9 (8/28/2013)5.3 (8/28/2012)(3.9 - 5.3)/(9 - 7)-0.7 5 (2/24/2014)5.3 (8/28/2012)(5 - 5.3)/(10 - 7)-0.1 5 (8/5/2014)5.3 (8/28/2012)(5 - 5.3)/(11 - 7)-0.075 5.2 (2/10/2015)5.3 (8/28/2012)(5.2 - 5.3)/(12 - 7)-0.02 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 16 5.2 (8/25/2015)5.3 (8/28/2012)(5.2 - 5.3)/(13 - 7)-0.0166667 5.7 (2/25/2016)5.3 (8/28/2012)(5.7 - 5.3)/(14 - 7)0.0571429 5.4 (8/10/2016)5.3 (8/28/2012)(5.4 - 5.3)/(15 - 7)0.0125 5.3 (2/16/2017)5.3 (8/28/2012)(5.3 - 5.3)/(16 - 7)0 5.2 (8/16/2017)5.3 (8/28/2012)(5.2 - 5.3)/(17 - 7)-0.01 4.7 (2/19/2018)5.3 (8/28/2012)(4.7 - 5.3)/(18 - 7)-0.0545455 5.1 (8/14/2018)5.3 (8/28/2012)(5.1 - 5.3)/(19 - 7)-0.0166667 3.9 (8/28/2013)4.9 (2/19/2013)(3.9 - 4.9)/(9 - 8)-1 5 (2/24/2014)4.9 (2/19/2013)(5 - 4.9)/(10 - 8)0.05 5 (8/5/2014)4.9 (2/19/2013)(5 - 4.9)/(11 - 8)0.0333333 5.2 (2/10/2015)4.9 (2/19/2013)(5.2 - 4.9)/(12 - 8)0.075 5.2 (8/25/2015)4.9 (2/19/2013)(5.2 - 4.9)/(13 - 8)0.06 5.7 (2/25/2016)4.9 (2/19/2013)(5.7 - 4.9)/(14 - 8)0.133333 5.4 (8/10/2016)4.9 (2/19/2013)(5.4 - 4.9)/(15 - 8)0.0714286 5.3 (2/16/2017)4.9 (2/19/2013)(5.3 - 4.9)/(16 - 8)0.05 5.2 (8/16/2017)4.9 (2/19/2013)(5.2 - 4.9)/(17 - 8)0.0333333 4.7 (2/19/2018)4.9 (2/19/2013)(4.7 - 4.9)/(18 - 8)-0.02 5.1 (8/14/2018)4.9 (2/19/2013)(5.1 - 4.9)/(19 - 8)0.0181818 5 (2/24/2014)3.9 (8/28/2013)(5 - 3.9)/(10 - 9)1.1 5 (8/5/2014)3.9 (8/28/2013)(5 - 3.9)/(11 - 9)0.55 5.2 (2/10/2015)3.9 (8/28/2013)(5.2 - 3.9)/(12 - 9)0.433333 5.2 (8/25/2015)3.9 (8/28/2013)(5.2 - 3.9)/(13 - 9)0.325 5.7 (2/25/2016)3.9 (8/28/2013)(5.7 - 3.9)/(14 - 9)0.36 5.4 (8/10/2016)3.9 (8/28/2013)(5.4 - 3.9)/(15 - 9)0.25 5.3 (2/16/2017)3.9 (8/28/2013)(5.3 - 3.9)/(16 - 9)0.2 5.2 (8/16/2017)3.9 (8/28/2013)(5.2 - 3.9)/(17 - 9)0.1625 4.7 (2/19/2018)3.9 (8/28/2013)(4.7 - 3.9)/(18 - 9)0.0888889 5.1 (8/14/2018)3.9 (8/28/2013)(5.1 - 3.9)/(19 - 9)0.12 5 (8/5/2014)5 (2/24/2014)(5 - 5)/(11 - 10)0 5.2 (2/10/2015)5 (2/24/2014)(5.2 - 5)/(12 - 10)0.1 5.2 (8/25/2015)5 (2/24/2014)(5.2 - 5)/(13 - 10)0.0666667 5.7 (2/25/2016)5 (2/24/2014)(5.7 - 5)/(14 - 10)0.175 5.4 (8/10/2016)5 (2/24/2014)(5.4 - 5)/(15 - 10)0.08 5.3 (2/16/2017)5 (2/24/2014)(5.3 - 5)/(16 - 10)0.05 5.2 (8/16/2017)5 (2/24/2014)(5.2 - 5)/(17 - 10)0.0285714 4.7 (2/19/2018)5 (2/24/2014)(4.7 - 5)/(18 - 10)-0.0375 5.1 (8/14/2018)5 (2/24/2014)(5.1 - 5)/(19 - 10)0.0111111 5.2 (2/10/2015)5 (8/5/2014)(5.2 - 5)/(12 - 11)0.2 5.2 (8/25/2015)5 (8/5/2014)(5.2 - 5)/(13 - 11)0.1 5.7 (2/25/2016)5 (8/5/2014)(5.7 - 5)/(14 - 11)0.233333 5.4 (8/10/2016)5 (8/5/2014)(5.4 - 5)/(15 - 11)0.1 5.3 (2/16/2017)5 (8/5/2014)(5.3 - 5)/(16 - 11)0.06 5.2 (8/16/2017)5 (8/5/2014)(5.2 - 5)/(17 - 11)0.0333333 4.7 (2/19/2018)5 (8/5/2014)(4.7 - 5)/(18 - 11)-0.0428571 5.1 (8/14/2018)5 (8/5/2014)(5.1 - 5)/(19 - 11)0.0125 5.2 (8/25/2015)5.2 (2/10/2015)(5.2 - 5.2)/(13 - 12)0 5.7 (2/25/2016)5.2 (2/10/2015)(5.7 - 5.2)/(14 - 12)0.25 5.4 (8/10/2016)5.2 (2/10/2015)(5.4 - 5.2)/(15 - 12)0.0666667 5.3 (2/16/2017)5.2 (2/10/2015)(5.3 - 5.2)/(16 - 12)0.025 5.2 (8/16/2017)5.2 (2/10/2015)(5.2 - 5.2)/(17 - 12)0 4.7 (2/19/2018)5.2 (2/10/2015)(4.7 - 5.2)/(18 - 12)-0.0833333 5.1 (8/14/2018)5.2 (2/10/2015)(5.1 - 5.2)/(19 - 12)-0.0142857 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 17 5.7 (2/25/2016)5.2 (8/25/2015)(5.7 - 5.2)/(14 - 13)0.5 5.4 (8/10/2016)5.2 (8/25/2015)(5.4 - 5.2)/(15 - 13)0.1 5.3 (2/16/2017)5.2 (8/25/2015)(5.3 - 5.2)/(16 - 13)0.0333333 5.2 (8/16/2017)5.2 (8/25/2015)(5.2 - 5.2)/(17 - 13)0 4.7 (2/19/2018)5.2 (8/25/2015)(4.7 - 5.2)/(18 - 13)-0.1 5.1 (8/14/2018)5.2 (8/25/2015)(5.1 - 5.2)/(19 - 13)-0.0166667 5.4 (8/10/2016)5.7 (2/25/2016)(5.4 - 5.7)/(15 - 14)-0.3 5.3 (2/16/2017)5.7 (2/25/2016)(5.3 - 5.7)/(16 - 14)-0.2 5.2 (8/16/2017)5.7 (2/25/2016)(5.2 - 5.7)/(17 - 14)-0.166667 4.7 (2/19/2018)5.7 (2/25/2016)(4.7 - 5.7)/(18 - 14)-0.25 5.1 (8/14/2018)5.7 (2/25/2016)(5.1 - 5.7)/(19 - 14)-0.12 5.3 (2/16/2017)5.4 (8/10/2016)(5.3 - 5.4)/(16 - 15)-0.1 5.2 (8/16/2017)5.4 (8/10/2016)(5.2 - 5.4)/(17 - 15)-0.1 4.7 (2/19/2018)5.4 (8/10/2016)(4.7 - 5.4)/(18 - 15)-0.233333 5.1 (8/14/2018)5.4 (8/10/2016)(5.1 - 5.4)/(19 - 15)-0.075 5.2 (8/16/2017)5.3 (2/16/2017)(5.2 - 5.3)/(17 - 16)-0.1 4.7 (2/19/2018)5.3 (2/16/2017)(4.7 - 5.3)/(18 - 16)-0.3 5.1 (8/14/2018)5.3 (2/16/2017)(5.1 - 5.3)/(19 - 16)-0.0666667 4.7 (2/19/2018)5.2 (8/16/2017)(4.7 - 5.2)/(18 - 17)-0.5 5.1 (8/14/2018)5.2 (8/16/2017)(5.1 - 5.2)/(19 - 17)-0.05 5.1 (8/14/2018)4.7 (2/19/2018)(5.1 - 4.7)/(19 - 18)0.4 Number of Q values = 171 Ordered Q Values n Q 1 -1 2 -0.7 3 -0.5 4 -0.466667 5 -0.4 6 -0.3 7 -0.3 8 -0.275 9 -0.26 10 -0.25 11 -0.233333 12 -0.233333 13 -0.2 14 -0.2 15 -0.2 16 -0.2 17 -0.175 18 -0.171429 19 -0.166667 20 -0.15 21 -0.12 22 -0.1 23 -0.1 24 -0.1 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 18 25 -0.1 26 -0.1 27 -0.1 28 -0.0833333 29 -0.08 30 -0.075 31 -0.075 32 -0.075 33 -0.075 34 -0.075 35 -0.0666667 36 -0.06 37 -0.0571429 38 -0.0545455 39 -0.05 40 -0.05 41 -0.0428571 42 -0.0428571 43 -0.04 44 -0.0375 45 -0.0375 46 -0.0357143 47 -0.0352941 48 -0.0333333 49 -0.0333333 50 -0.0333333 51 -0.0333333 52 -0.0333333 53 -0.0333333 54 -0.03 55 -0.0285714 56 -0.025 57 -0.0230769 58 -0.02 59 -0.02 60 -0.0166667 61 -0.0166667 62 -0.0166667 63 -0.0166667 64 -0.0153846 65 -0.0142857 66 -0.0142857 67 -0.0125 68 -0.0125 69 -0.0111111 70 -0.0111111 71 -0.0111111 72 -0.01 73 -0.01 74 -0.00909091 75 -0.00909091 76 -0.00833333 77 -0.00714286 78 -0.00666667 79 -0.00625 80 0 81 0 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 19 82 0 83 0 84 0 85 0 86 0 87 0 88 0 89 0 90 0 91 0 92 0 93 0 94 0 95 0 96 0 97 0 98 0 99 0 100 0.00666667 101 0.00714286 102 0.00714286 103 0.00833333 104 0.00833333 105 0.00909091 106 0.01 107 0.0111111 108 0.0111111 109 0.0125 110 0.0125 111 0.0142857 112 0.0166667 113 0.0181818 114 0.0181818 115 0.0230769 116 0.025 117 0.025 118 0.0272727 119 0.0285714 120 0.0285714 121 0.0307692 122 0.0333333 123 0.0333333 124 0.0333333 125 0.0333333 126 0.0333333 127 0.0363636 128 0.04 129 0.04 130 0.05 131 0.05 132 0.05 133 0.05 134 0.05 135 0.05 136 0.05 137 0.05 138 0.05 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 20 139 0.0571429 140 0.06 141 0.06 142 0.0666667 143 0.0666667 144 0.0714286 145 0.075 146 0.0777778 147 0.08 148 0.0888889 149 0.1 150 0.1 151 0.1 152 0.1 153 0.12 154 0.133333 155 0.15 156 0.1625 157 0.175 158 0.2 159 0.2 160 0.2 161 0.233333 162 0.25 163 0.25 164 0.3 165 0.325 166 0.36 167 0.4 168 0.433333 169 0.5 170 0.55 171 1.1 Sen's Estimator (Median Q) is 0 Tied Group Value Members 1 5.3 5 2 5.1 2 3 5.2 4 4 5 3 Time Period Observations 2/18/2008 1 8/20/2009 1 8/24/2010 1 2/23/2011 1 8/24/2011 1 2/21/2012 1 8/28/2012 1 2/19/2013 1 8/28/2013 1 2/24/2014 1 8/5/2014 1 2/10/2015 1 8/25/2015 1 2/25/2016 1 8/10/2016 1 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 21 2/16/2017 1 8/16/2017 1 2/19/2018 1 8/14/2018 1 There are 0 time periods with multiple data A = 540 B = 0 C = 90 D = 0 E = 40 F = 0 a = 14706 b = 52326 c = 684 Group Variance = 787 For 90% confidence interval (two-tailed), Z at (1-0.9)/2 = 1.64485 C = 46.1439 M1 = (171 - 46.1439)/2.0 = 62.428 M2 = (171 + 46.1439)/2.0 + 1 = 109.572 Lower limit is -0.0166667 = Q(62) Upper limit is 0.0125 = Q(110) -0.0166667 < 0 < 0.0125 indicating no trend in data. DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 22 Sen's Slope Analysis Parameter: PH (field measurement) Location: MW-10 Original Data (Not Transformed) Non-Detects Replaced with Detection Limit 90% Confidence Level Xj Xk (Xj - Xk)/(j-k)Q 5.3 (8/20/2009)5.6 (2/18/2008)(5.3 - 5.6)/(2 - 1)-0.3 4.5 (8/24/2010)5.6 (2/18/2008)(4.5 - 5.6)/(3 - 1)-0.55 5.7 (2/23/2011)5.6 (2/18/2008)(5.7 - 5.6)/(4 - 1)0.0333333 5.2 (8/24/2011)5.6 (2/18/2008)(5.2 - 5.6)/(5 - 1)-0.1 5.7 (2/21/2012)5.6 (2/18/2008)(5.7 - 5.6)/(6 - 1)0.02 5.3 (8/28/2012)5.6 (2/18/2008)(5.3 - 5.6)/(7 - 1)-0.05 4.8 (2/19/2013)5.6 (2/18/2008)(4.8 - 5.6)/(8 - 1)-0.114286 5.5 (8/28/2013)5.6 (2/18/2008)(5.5 - 5.6)/(9 - 1)-0.0125 5.4 (2/24/2014)5.6 (2/18/2008)(5.4 - 5.6)/(10 - 1)-0.0222222 5.2 (8/5/2014)5.6 (2/18/2008)(5.2 - 5.6)/(11 - 1)-0.04 5.6 (2/10/2015)5.6 (2/18/2008)(5.6 - 5.6)/(12 - 1)0 5.4 (8/25/2015)5.6 (2/18/2008)(5.4 - 5.6)/(13 - 1)-0.0166667 6.1 (2/25/2016)5.6 (2/18/2008)(6.1 - 5.6)/(14 - 1)0.0384615 5.6 (8/10/2016)5.6 (2/18/2008)(5.6 - 5.6)/(15 - 1)0 5.5 (2/16/2017)5.6 (2/18/2008)(5.5 - 5.6)/(16 - 1)-0.00666667 5.4 (8/16/2017)5.6 (2/18/2008)(5.4 - 5.6)/(17 - 1)-0.0125 5.2 (2/19/2018)5.6 (2/18/2008)(5.2 - 5.6)/(18 - 1)-0.0235294 5.3 (8/14/2018)5.6 (2/18/2008)(5.3 - 5.6)/(19 - 1)-0.0166667 4.5 (8/24/2010)5.3 (8/20/2009)(4.5 - 5.3)/(3 - 2)-0.8 5.7 (2/23/2011)5.3 (8/20/2009)(5.7 - 5.3)/(4 - 2)0.2 5.2 (8/24/2011)5.3 (8/20/2009)(5.2 - 5.3)/(5 - 2)-0.0333333 5.7 (2/21/2012)5.3 (8/20/2009)(5.7 - 5.3)/(6 - 2)0.1 5.3 (8/28/2012)5.3 (8/20/2009)(5.3 - 5.3)/(7 - 2)0 4.8 (2/19/2013)5.3 (8/20/2009)(4.8 - 5.3)/(8 - 2)-0.0833333 5.5 (8/28/2013)5.3 (8/20/2009)(5.5 - 5.3)/(9 - 2)0.0285714 5.4 (2/24/2014)5.3 (8/20/2009)(5.4 - 5.3)/(10 - 2)0.0125 5.2 (8/5/2014)5.3 (8/20/2009)(5.2 - 5.3)/(11 - 2)-0.0111111 5.6 (2/10/2015)5.3 (8/20/2009)(5.6 - 5.3)/(12 - 2)0.03 5.4 (8/25/2015)5.3 (8/20/2009)(5.4 - 5.3)/(13 - 2)0.00909091 6.1 (2/25/2016)5.3 (8/20/2009)(6.1 - 5.3)/(14 - 2)0.0666667 5.6 (8/10/2016)5.3 (8/20/2009)(5.6 - 5.3)/(15 - 2)0.0230769 5.5 (2/16/2017)5.3 (8/20/2009)(5.5 - 5.3)/(16 - 2)0.0142857 5.4 (8/16/2017)5.3 (8/20/2009)(5.4 - 5.3)/(17 - 2)0.00666667 5.2 (2/19/2018)5.3 (8/20/2009)(5.2 - 5.3)/(18 - 2)-0.00625 5.3 (8/14/2018)5.3 (8/20/2009)(5.3 - 5.3)/(19 - 2)0 5.7 (2/23/2011)4.5 (8/24/2010)(5.7 - 4.5)/(4 - 3)1.2 5.2 (8/24/2011)4.5 (8/24/2010)(5.2 - 4.5)/(5 - 3)0.35 5.7 (2/21/2012)4.5 (8/24/2010)(5.7 - 4.5)/(6 - 3)0.4 5.3 (8/28/2012)4.5 (8/24/2010)(5.3 - 4.5)/(7 - 3)0.2 4.8 (2/19/2013)4.5 (8/24/2010)(4.8 - 4.5)/(8 - 3)0.06 5.5 (8/28/2013)4.5 (8/24/2010)(5.5 - 4.5)/(9 - 3)0.166667 5.4 (2/24/2014)4.5 (8/24/2010)(5.4 - 4.5)/(10 - 3)0.128571 5.2 (8/5/2014)4.5 (8/24/2010)(5.2 - 4.5)/(11 - 3)0.0875 5.6 (2/10/2015)4.5 (8/24/2010)(5.6 - 4.5)/(12 - 3)0.122222 5.4 (8/25/2015)4.5 (8/24/2010)(5.4 - 4.5)/(13 - 3)0.09 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 23 6.1 (2/25/2016)4.5 (8/24/2010)(6.1 - 4.5)/(14 - 3)0.145455 5.6 (8/10/2016)4.5 (8/24/2010)(5.6 - 4.5)/(15 - 3)0.0916667 5.5 (2/16/2017)4.5 (8/24/2010)(5.5 - 4.5)/(16 - 3)0.0769231 5.4 (8/16/2017)4.5 (8/24/2010)(5.4 - 4.5)/(17 - 3)0.0642857 5.2 (2/19/2018)4.5 (8/24/2010)(5.2 - 4.5)/(18 - 3)0.0466667 5.3 (8/14/2018)4.5 (8/24/2010)(5.3 - 4.5)/(19 - 3)0.05 5.2 (8/24/2011)5.7 (2/23/2011)(5.2 - 5.7)/(5 - 4)-0.5 5.7 (2/21/2012)5.7 (2/23/2011)(5.7 - 5.7)/(6 - 4)0 5.3 (8/28/2012)5.7 (2/23/2011)(5.3 - 5.7)/(7 - 4)-0.133333 4.8 (2/19/2013)5.7 (2/23/2011)(4.8 - 5.7)/(8 - 4)-0.225 5.5 (8/28/2013)5.7 (2/23/2011)(5.5 - 5.7)/(9 - 4)-0.04 5.4 (2/24/2014)5.7 (2/23/2011)(5.4 - 5.7)/(10 - 4)-0.05 5.2 (8/5/2014)5.7 (2/23/2011)(5.2 - 5.7)/(11 - 4)-0.0714286 5.6 (2/10/2015)5.7 (2/23/2011)(5.6 - 5.7)/(12 - 4)-0.0125 5.4 (8/25/2015)5.7 (2/23/2011)(5.4 - 5.7)/(13 - 4)-0.0333333 6.1 (2/25/2016)5.7 (2/23/2011)(6.1 - 5.7)/(14 - 4)0.04 5.6 (8/10/2016)5.7 (2/23/2011)(5.6 - 5.7)/(15 - 4)-0.00909091 5.5 (2/16/2017)5.7 (2/23/2011)(5.5 - 5.7)/(16 - 4)-0.0166667 5.4 (8/16/2017)5.7 (2/23/2011)(5.4 - 5.7)/(17 - 4)-0.0230769 5.2 (2/19/2018)5.7 (2/23/2011)(5.2 - 5.7)/(18 - 4)-0.0357143 5.3 (8/14/2018)5.7 (2/23/2011)(5.3 - 5.7)/(19 - 4)-0.0266667 5.7 (2/21/2012)5.2 (8/24/2011)(5.7 - 5.2)/(6 - 5)0.5 5.3 (8/28/2012)5.2 (8/24/2011)(5.3 - 5.2)/(7 - 5)0.05 4.8 (2/19/2013)5.2 (8/24/2011)(4.8 - 5.2)/(8 - 5)-0.133333 5.5 (8/28/2013)5.2 (8/24/2011)(5.5 - 5.2)/(9 - 5)0.075 5.4 (2/24/2014)5.2 (8/24/2011)(5.4 - 5.2)/(10 - 5)0.04 5.2 (8/5/2014)5.2 (8/24/2011)(5.2 - 5.2)/(11 - 5)0 5.6 (2/10/2015)5.2 (8/24/2011)(5.6 - 5.2)/(12 - 5)0.0571429 5.4 (8/25/2015)5.2 (8/24/2011)(5.4 - 5.2)/(13 - 5)0.025 6.1 (2/25/2016)5.2 (8/24/2011)(6.1 - 5.2)/(14 - 5)0.1 5.6 (8/10/2016)5.2 (8/24/2011)(5.6 - 5.2)/(15 - 5)0.04 5.5 (2/16/2017)5.2 (8/24/2011)(5.5 - 5.2)/(16 - 5)0.0272727 5.4 (8/16/2017)5.2 (8/24/2011)(5.4 - 5.2)/(17 - 5)0.0166667 5.2 (2/19/2018)5.2 (8/24/2011)(5.2 - 5.2)/(18 - 5)0 5.3 (8/14/2018)5.2 (8/24/2011)(5.3 - 5.2)/(19 - 5)0.00714286 5.3 (8/28/2012)5.7 (2/21/2012)(5.3 - 5.7)/(7 - 6)-0.4 4.8 (2/19/2013)5.7 (2/21/2012)(4.8 - 5.7)/(8 - 6)-0.45 5.5 (8/28/2013)5.7 (2/21/2012)(5.5 - 5.7)/(9 - 6)-0.0666667 5.4 (2/24/2014)5.7 (2/21/2012)(5.4 - 5.7)/(10 - 6)-0.075 5.2 (8/5/2014)5.7 (2/21/2012)(5.2 - 5.7)/(11 - 6)-0.1 5.6 (2/10/2015)5.7 (2/21/2012)(5.6 - 5.7)/(12 - 6)-0.0166667 5.4 (8/25/2015)5.7 (2/21/2012)(5.4 - 5.7)/(13 - 6)-0.0428571 6.1 (2/25/2016)5.7 (2/21/2012)(6.1 - 5.7)/(14 - 6)0.05 5.6 (8/10/2016)5.7 (2/21/2012)(5.6 - 5.7)/(15 - 6)-0.0111111 5.5 (2/16/2017)5.7 (2/21/2012)(5.5 - 5.7)/(16 - 6)-0.02 5.4 (8/16/2017)5.7 (2/21/2012)(5.4 - 5.7)/(17 - 6)-0.0272727 5.2 (2/19/2018)5.7 (2/21/2012)(5.2 - 5.7)/(18 - 6)-0.0416667 5.3 (8/14/2018)5.7 (2/21/2012)(5.3 - 5.7)/(19 - 6)-0.0307692 4.8 (2/19/2013)5.3 (8/28/2012)(4.8 - 5.3)/(8 - 7)-0.5 5.5 (8/28/2013)5.3 (8/28/2012)(5.5 - 5.3)/(9 - 7)0.1 5.4 (2/24/2014)5.3 (8/28/2012)(5.4 - 5.3)/(10 - 7)0.0333333 5.2 (8/5/2014)5.3 (8/28/2012)(5.2 - 5.3)/(11 - 7)-0.025 5.6 (2/10/2015)5.3 (8/28/2012)(5.6 - 5.3)/(12 - 7)0.06 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 24 5.4 (8/25/2015)5.3 (8/28/2012)(5.4 - 5.3)/(13 - 7)0.0166667 6.1 (2/25/2016)5.3 (8/28/2012)(6.1 - 5.3)/(14 - 7)0.114286 5.6 (8/10/2016)5.3 (8/28/2012)(5.6 - 5.3)/(15 - 7)0.0375 5.5 (2/16/2017)5.3 (8/28/2012)(5.5 - 5.3)/(16 - 7)0.0222222 5.4 (8/16/2017)5.3 (8/28/2012)(5.4 - 5.3)/(17 - 7)0.01 5.2 (2/19/2018)5.3 (8/28/2012)(5.2 - 5.3)/(18 - 7)-0.00909091 5.3 (8/14/2018)5.3 (8/28/2012)(5.3 - 5.3)/(19 - 7)0 5.5 (8/28/2013)4.8 (2/19/2013)(5.5 - 4.8)/(9 - 8)0.7 5.4 (2/24/2014)4.8 (2/19/2013)(5.4 - 4.8)/(10 - 8)0.3 5.2 (8/5/2014)4.8 (2/19/2013)(5.2 - 4.8)/(11 - 8)0.133333 5.6 (2/10/2015)4.8 (2/19/2013)(5.6 - 4.8)/(12 - 8)0.2 5.4 (8/25/2015)4.8 (2/19/2013)(5.4 - 4.8)/(13 - 8)0.12 6.1 (2/25/2016)4.8 (2/19/2013)(6.1 - 4.8)/(14 - 8)0.216667 5.6 (8/10/2016)4.8 (2/19/2013)(5.6 - 4.8)/(15 - 8)0.114286 5.5 (2/16/2017)4.8 (2/19/2013)(5.5 - 4.8)/(16 - 8)0.0875 5.4 (8/16/2017)4.8 (2/19/2013)(5.4 - 4.8)/(17 - 8)0.0666667 5.2 (2/19/2018)4.8 (2/19/2013)(5.2 - 4.8)/(18 - 8)0.04 5.3 (8/14/2018)4.8 (2/19/2013)(5.3 - 4.8)/(19 - 8)0.0454545 5.4 (2/24/2014)5.5 (8/28/2013)(5.4 - 5.5)/(10 - 9)-0.1 5.2 (8/5/2014)5.5 (8/28/2013)(5.2 - 5.5)/(11 - 9)-0.15 5.6 (2/10/2015)5.5 (8/28/2013)(5.6 - 5.5)/(12 - 9)0.0333333 5.4 (8/25/2015)5.5 (8/28/2013)(5.4 - 5.5)/(13 - 9)-0.025 6.1 (2/25/2016)5.5 (8/28/2013)(6.1 - 5.5)/(14 - 9)0.12 5.6 (8/10/2016)5.5 (8/28/2013)(5.6 - 5.5)/(15 - 9)0.0166667 5.5 (2/16/2017)5.5 (8/28/2013)(5.5 - 5.5)/(16 - 9)0 5.4 (8/16/2017)5.5 (8/28/2013)(5.4 - 5.5)/(17 - 9)-0.0125 5.2 (2/19/2018)5.5 (8/28/2013)(5.2 - 5.5)/(18 - 9)-0.0333333 5.3 (8/14/2018)5.5 (8/28/2013)(5.3 - 5.5)/(19 - 9)-0.02 5.2 (8/5/2014)5.4 (2/24/2014)(5.2 - 5.4)/(11 - 10)-0.2 5.6 (2/10/2015)5.4 (2/24/2014)(5.6 - 5.4)/(12 - 10)0.1 5.4 (8/25/2015)5.4 (2/24/2014)(5.4 - 5.4)/(13 - 10)0 6.1 (2/25/2016)5.4 (2/24/2014)(6.1 - 5.4)/(14 - 10)0.175 5.6 (8/10/2016)5.4 (2/24/2014)(5.6 - 5.4)/(15 - 10)0.04 5.5 (2/16/2017)5.4 (2/24/2014)(5.5 - 5.4)/(16 - 10)0.0166667 5.4 (8/16/2017)5.4 (2/24/2014)(5.4 - 5.4)/(17 - 10)0 5.2 (2/19/2018)5.4 (2/24/2014)(5.2 - 5.4)/(18 - 10)-0.025 5.3 (8/14/2018)5.4 (2/24/2014)(5.3 - 5.4)/(19 - 10)-0.0111111 5.6 (2/10/2015)5.2 (8/5/2014)(5.6 - 5.2)/(12 - 11)0.4 5.4 (8/25/2015)5.2 (8/5/2014)(5.4 - 5.2)/(13 - 11)0.1 6.1 (2/25/2016)5.2 (8/5/2014)(6.1 - 5.2)/(14 - 11)0.3 5.6 (8/10/2016)5.2 (8/5/2014)(5.6 - 5.2)/(15 - 11)0.1 5.5 (2/16/2017)5.2 (8/5/2014)(5.5 - 5.2)/(16 - 11)0.06 5.4 (8/16/2017)5.2 (8/5/2014)(5.4 - 5.2)/(17 - 11)0.0333333 5.2 (2/19/2018)5.2 (8/5/2014)(5.2 - 5.2)/(18 - 11)0 5.3 (8/14/2018)5.2 (8/5/2014)(5.3 - 5.2)/(19 - 11)0.0125 5.4 (8/25/2015)5.6 (2/10/2015)(5.4 - 5.6)/(13 - 12)-0.2 6.1 (2/25/2016)5.6 (2/10/2015)(6.1 - 5.6)/(14 - 12)0.25 5.6 (8/10/2016)5.6 (2/10/2015)(5.6 - 5.6)/(15 - 12)0 5.5 (2/16/2017)5.6 (2/10/2015)(5.5 - 5.6)/(16 - 12)-0.025 5.4 (8/16/2017)5.6 (2/10/2015)(5.4 - 5.6)/(17 - 12)-0.04 5.2 (2/19/2018)5.6 (2/10/2015)(5.2 - 5.6)/(18 - 12)-0.0666667 5.3 (8/14/2018)5.6 (2/10/2015)(5.3 - 5.6)/(19 - 12)-0.0428571 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 25 6.1 (2/25/2016)5.4 (8/25/2015)(6.1 - 5.4)/(14 - 13)0.7 5.6 (8/10/2016)5.4 (8/25/2015)(5.6 - 5.4)/(15 - 13)0.1 5.5 (2/16/2017)5.4 (8/25/2015)(5.5 - 5.4)/(16 - 13)0.0333333 5.4 (8/16/2017)5.4 (8/25/2015)(5.4 - 5.4)/(17 - 13)0 5.2 (2/19/2018)5.4 (8/25/2015)(5.2 - 5.4)/(18 - 13)-0.04 5.3 (8/14/2018)5.4 (8/25/2015)(5.3 - 5.4)/(19 - 13)-0.0166667 5.6 (8/10/2016)6.1 (2/25/2016)(5.6 - 6.1)/(15 - 14)-0.5 5.5 (2/16/2017)6.1 (2/25/2016)(5.5 - 6.1)/(16 - 14)-0.3 5.4 (8/16/2017)6.1 (2/25/2016)(5.4 - 6.1)/(17 - 14)-0.233333 5.2 (2/19/2018)6.1 (2/25/2016)(5.2 - 6.1)/(18 - 14)-0.225 5.3 (8/14/2018)6.1 (2/25/2016)(5.3 - 6.1)/(19 - 14)-0.16 5.5 (2/16/2017)5.6 (8/10/2016)(5.5 - 5.6)/(16 - 15)-0.1 5.4 (8/16/2017)5.6 (8/10/2016)(5.4 - 5.6)/(17 - 15)-0.1 5.2 (2/19/2018)5.6 (8/10/2016)(5.2 - 5.6)/(18 - 15)-0.133333 5.3 (8/14/2018)5.6 (8/10/2016)(5.3 - 5.6)/(19 - 15)-0.075 5.4 (8/16/2017)5.5 (2/16/2017)(5.4 - 5.5)/(17 - 16)-0.1 5.2 (2/19/2018)5.5 (2/16/2017)(5.2 - 5.5)/(18 - 16)-0.15 5.3 (8/14/2018)5.5 (2/16/2017)(5.3 - 5.5)/(19 - 16)-0.0666667 5.2 (2/19/2018)5.4 (8/16/2017)(5.2 - 5.4)/(18 - 17)-0.2 5.3 (8/14/2018)5.4 (8/16/2017)(5.3 - 5.4)/(19 - 17)-0.05 5.3 (8/14/2018)5.2 (2/19/2018)(5.3 - 5.2)/(19 - 18)0.1 Number of Q values = 171 Ordered Q Values n Q 1 -0.8 2 -0.55 3 -0.5 4 -0.5 5 -0.5 6 -0.45 7 -0.4 8 -0.3 9 -0.3 10 -0.233333 11 -0.225 12 -0.225 13 -0.2 14 -0.2 15 -0.2 16 -0.16 17 -0.15 18 -0.15 19 -0.133333 20 -0.133333 21 -0.133333 22 -0.114286 23 -0.1 24 -0.1 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 26 25 -0.1 26 -0.1 27 -0.1 28 -0.1 29 -0.0833333 30 -0.075 31 -0.075 32 -0.0714286 33 -0.0666667 34 -0.0666667 35 -0.0666667 36 -0.05 37 -0.05 38 -0.05 39 -0.0428571 40 -0.0428571 41 -0.0416667 42 -0.04 43 -0.04 44 -0.04 45 -0.04 46 -0.0357143 47 -0.0333333 48 -0.0333333 49 -0.0333333 50 -0.0307692 51 -0.0272727 52 -0.0266667 53 -0.025 54 -0.025 55 -0.025 56 -0.025 57 -0.0235294 58 -0.0230769 59 -0.0222222 60 -0.02 61 -0.02 62 -0.0166667 63 -0.0166667 64 -0.0166667 65 -0.0166667 66 -0.0166667 67 -0.0125 68 -0.0125 69 -0.0125 70 -0.0125 71 -0.0111111 72 -0.0111111 73 -0.0111111 74 -0.00909091 75 -0.00909091 76 -0.00666667 77 -0.00625 78 0 79 0 80 0 81 0 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 27 82 0 83 0 84 0 85 0 86 0 87 0 88 0 89 0 90 0 91 0 92 0.00666667 93 0.00714286 94 0.00909091 95 0.01 96 0.0125 97 0.0125 98 0.0142857 99 0.0166667 100 0.0166667 101 0.0166667 102 0.0166667 103 0.02 104 0.0222222 105 0.0230769 106 0.025 107 0.0272727 108 0.0285714 109 0.03 110 0.0333333 111 0.0333333 112 0.0333333 113 0.0333333 114 0.0333333 115 0.0375 116 0.0384615 117 0.04 118 0.04 119 0.04 120 0.04 121 0.04 122 0.0454545 123 0.0466667 124 0.05 125 0.05 126 0.05 127 0.0571429 128 0.06 129 0.06 130 0.06 131 0.0642857 132 0.0666667 133 0.0666667 134 0.075 135 0.0769231 136 0.0875 137 0.0875 138 0.09 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 28 139 0.0916667 140 0.1 141 0.1 142 0.1 143 0.1 144 0.1 145 0.1 146 0.1 147 0.1 148 0.114286 149 0.114286 150 0.12 151 0.12 152 0.122222 153 0.128571 154 0.133333 155 0.145455 156 0.166667 157 0.175 158 0.2 159 0.2 160 0.2 161 0.216667 162 0.25 163 0.3 164 0.3 165 0.35 166 0.4 167 0.4 168 0.5 169 0.7 170 0.7 171 1.2 Sen's Estimator (Median Q) is 0 Tied Group Value Members 1 5.6 3 2 5.3 3 3 5.7 2 4 5.2 3 5 5.5 2 6 5.4 3 Time Period Observations 2/18/2008 1 8/20/2009 1 8/24/2010 1 2/23/2011 1 8/24/2011 1 2/21/2012 1 8/28/2012 1 2/19/2013 1 8/28/2013 1 2/24/2014 1 8/5/2014 1 2/10/2015 1 8/25/2015 1 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 29 2/25/2016 1 8/10/2016 1 2/16/2017 1 8/16/2017 1 2/19/2018 1 8/14/2018 1 There are 0 time periods with multiple data A = 300 B = 0 C = 24 D = 0 E = 28 F = 0 a = 14706 b = 52326 c = 684 Group Variance = 800.333 For 90% confidence interval (two-tailed), Z at (1-0.9)/2 = 1.64485 C = 46.5332 M1 = (171 - 46.5332)/2.0 = 62.2334 M2 = (171 + 46.5332)/2.0 + 1 = 109.767 Lower limit is -0.0166667 = Q(62) Upper limit is 0.0333333 = Q(110) -0.0166667 < 0 < 0.0333333 indicating no trend in data. DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 30 Sen's Slope Analysis Parameter: PH (field measurement) Location: MW-11 Original Data (Not Transformed) Non-Detects Replaced with Detection Limit 90% Confidence Level Xj Xk (Xj - Xk)/(j-k)Q 6.1 (8/20/2009)6.5 (2/18/2008)(6.1 - 6.5)/(2 - 1)-0.4 6.4 (8/24/2010)6.5 (2/18/2008)(6.4 - 6.5)/(3 - 1)-0.05 6.2 (2/23/2011)6.5 (2/18/2008)(6.2 - 6.5)/(4 - 1)-0.1 6 (8/24/2011)6.5 (2/18/2008)(6 - 6.5)/(5 - 1)-0.125 6.5 (2/21/2012)6.5 (2/18/2008)(6.5 - 6.5)/(6 - 1)0 6.4 (8/28/2012)6.5 (2/18/2008)(6.4 - 6.5)/(7 - 1)-0.0166667 5.9 (2/19/2013)6.5 (2/18/2008)(5.9 - 6.5)/(8 - 1)-0.0857143 6.5 (8/28/2013)6.5 (2/18/2008)(6.5 - 6.5)/(9 - 1)0 6.2 (2/24/2014)6.5 (2/18/2008)(6.2 - 6.5)/(10 - 1)-0.0333333 6.2 (8/5/2014)6.5 (2/18/2008)(6.2 - 6.5)/(11 - 1)-0.03 6.2 (2/10/2015)6.5 (2/18/2008)(6.2 - 6.5)/(12 - 1)-0.0272727 6.3 (8/25/2015)6.5 (2/18/2008)(6.3 - 6.5)/(13 - 1)-0.0166667 6.6 (2/25/2016)6.5 (2/18/2008)(6.6 - 6.5)/(14 - 1)0.00769231 6.4 (8/10/2016)6.5 (2/18/2008)(6.4 - 6.5)/(15 - 1)-0.00714286 6.1 (2/16/2017)6.5 (2/18/2008)(6.1 - 6.5)/(16 - 1)-0.0266667 6.3 (8/16/2017)6.5 (2/18/2008)(6.3 - 6.5)/(17 - 1)-0.0125 5.8 (2/19/2018)6.5 (2/18/2008)(5.8 - 6.5)/(18 - 1)-0.0411765 6.1 (8/14/2018)6.5 (2/18/2008)(6.1 - 6.5)/(19 - 1)-0.0222222 6.4 (8/24/2010)6.1 (8/20/2009)(6.4 - 6.1)/(3 - 2)0.3 6.2 (2/23/2011)6.1 (8/20/2009)(6.2 - 6.1)/(4 - 2)0.05 6 (8/24/2011)6.1 (8/20/2009)(6 - 6.1)/(5 - 2)-0.0333333 6.5 (2/21/2012)6.1 (8/20/2009)(6.5 - 6.1)/(6 - 2)0.1 6.4 (8/28/2012)6.1 (8/20/2009)(6.4 - 6.1)/(7 - 2)0.06 5.9 (2/19/2013)6.1 (8/20/2009)(5.9 - 6.1)/(8 - 2)-0.0333333 6.5 (8/28/2013)6.1 (8/20/2009)(6.5 - 6.1)/(9 - 2)0.0571429 6.2 (2/24/2014)6.1 (8/20/2009)(6.2 - 6.1)/(10 - 2)0.0125 6.2 (8/5/2014)6.1 (8/20/2009)(6.2 - 6.1)/(11 - 2)0.0111111 6.2 (2/10/2015)6.1 (8/20/2009)(6.2 - 6.1)/(12 - 2)0.01 6.3 (8/25/2015)6.1 (8/20/2009)(6.3 - 6.1)/(13 - 2)0.0181818 6.6 (2/25/2016)6.1 (8/20/2009)(6.6 - 6.1)/(14 - 2)0.0416667 6.4 (8/10/2016)6.1 (8/20/2009)(6.4 - 6.1)/(15 - 2)0.0230769 6.1 (2/16/2017)6.1 (8/20/2009)(6.1 - 6.1)/(16 - 2)0 6.3 (8/16/2017)6.1 (8/20/2009)(6.3 - 6.1)/(17 - 2)0.0133333 5.8 (2/19/2018)6.1 (8/20/2009)(5.8 - 6.1)/(18 - 2)-0.01875 6.1 (8/14/2018)6.1 (8/20/2009)(6.1 - 6.1)/(19 - 2)0 6.2 (2/23/2011)6.4 (8/24/2010)(6.2 - 6.4)/(4 - 3)-0.2 6 (8/24/2011)6.4 (8/24/2010)(6 - 6.4)/(5 - 3)-0.2 6.5 (2/21/2012)6.4 (8/24/2010)(6.5 - 6.4)/(6 - 3)0.0333333 6.4 (8/28/2012)6.4 (8/24/2010)(6.4 - 6.4)/(7 - 3)0 5.9 (2/19/2013)6.4 (8/24/2010)(5.9 - 6.4)/(8 - 3)-0.1 6.5 (8/28/2013)6.4 (8/24/2010)(6.5 - 6.4)/(9 - 3)0.0166667 6.2 (2/24/2014)6.4 (8/24/2010)(6.2 - 6.4)/(10 - 3)-0.0285714 6.2 (8/5/2014)6.4 (8/24/2010)(6.2 - 6.4)/(11 - 3)-0.025 6.2 (2/10/2015)6.4 (8/24/2010)(6.2 - 6.4)/(12 - 3)-0.0222222 6.3 (8/25/2015)6.4 (8/24/2010)(6.3 - 6.4)/(13 - 3)-0.01 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 31 6.6 (2/25/2016)6.4 (8/24/2010)(6.6 - 6.4)/(14 - 3)0.0181818 6.4 (8/10/2016)6.4 (8/24/2010)(6.4 - 6.4)/(15 - 3)0 6.1 (2/16/2017)6.4 (8/24/2010)(6.1 - 6.4)/(16 - 3)-0.0230769 6.3 (8/16/2017)6.4 (8/24/2010)(6.3 - 6.4)/(17 - 3)-0.00714286 5.8 (2/19/2018)6.4 (8/24/2010)(5.8 - 6.4)/(18 - 3)-0.04 6.1 (8/14/2018)6.4 (8/24/2010)(6.1 - 6.4)/(19 - 3)-0.01875 6 (8/24/2011)6.2 (2/23/2011)(6 - 6.2)/(5 - 4)-0.2 6.5 (2/21/2012)6.2 (2/23/2011)(6.5 - 6.2)/(6 - 4)0.15 6.4 (8/28/2012)6.2 (2/23/2011)(6.4 - 6.2)/(7 - 4)0.0666667 5.9 (2/19/2013)6.2 (2/23/2011)(5.9 - 6.2)/(8 - 4)-0.075 6.5 (8/28/2013)6.2 (2/23/2011)(6.5 - 6.2)/(9 - 4)0.06 6.2 (2/24/2014)6.2 (2/23/2011)(6.2 - 6.2)/(10 - 4)0 6.2 (8/5/2014)6.2 (2/23/2011)(6.2 - 6.2)/(11 - 4)0 6.2 (2/10/2015)6.2 (2/23/2011)(6.2 - 6.2)/(12 - 4)0 6.3 (8/25/2015)6.2 (2/23/2011)(6.3 - 6.2)/(13 - 4)0.0111111 6.6 (2/25/2016)6.2 (2/23/2011)(6.6 - 6.2)/(14 - 4)0.04 6.4 (8/10/2016)6.2 (2/23/2011)(6.4 - 6.2)/(15 - 4)0.0181818 6.1 (2/16/2017)6.2 (2/23/2011)(6.1 - 6.2)/(16 - 4)-0.00833333 6.3 (8/16/2017)6.2 (2/23/2011)(6.3 - 6.2)/(17 - 4)0.00769231 5.8 (2/19/2018)6.2 (2/23/2011)(5.8 - 6.2)/(18 - 4)-0.0285714 6.1 (8/14/2018)6.2 (2/23/2011)(6.1 - 6.2)/(19 - 4)-0.00666667 6.5 (2/21/2012)6 (8/24/2011)(6.5 - 6)/(6 - 5)0.5 6.4 (8/28/2012)6 (8/24/2011)(6.4 - 6)/(7 - 5)0.2 5.9 (2/19/2013)6 (8/24/2011)(5.9 - 6)/(8 - 5)-0.0333333 6.5 (8/28/2013)6 (8/24/2011)(6.5 - 6)/(9 - 5)0.125 6.2 (2/24/2014)6 (8/24/2011)(6.2 - 6)/(10 - 5)0.04 6.2 (8/5/2014)6 (8/24/2011)(6.2 - 6)/(11 - 5)0.0333333 6.2 (2/10/2015)6 (8/24/2011)(6.2 - 6)/(12 - 5)0.0285714 6.3 (8/25/2015)6 (8/24/2011)(6.3 - 6)/(13 - 5)0.0375 6.6 (2/25/2016)6 (8/24/2011)(6.6 - 6)/(14 - 5)0.0666667 6.4 (8/10/2016)6 (8/24/2011)(6.4 - 6)/(15 - 5)0.04 6.1 (2/16/2017)6 (8/24/2011)(6.1 - 6)/(16 - 5)0.00909091 6.3 (8/16/2017)6 (8/24/2011)(6.3 - 6)/(17 - 5)0.025 5.8 (2/19/2018)6 (8/24/2011)(5.8 - 6)/(18 - 5)-0.0153846 6.1 (8/14/2018)6 (8/24/2011)(6.1 - 6)/(19 - 5)0.00714286 6.4 (8/28/2012)6.5 (2/21/2012)(6.4 - 6.5)/(7 - 6)-0.1 5.9 (2/19/2013)6.5 (2/21/2012)(5.9 - 6.5)/(8 - 6)-0.3 6.5 (8/28/2013)6.5 (2/21/2012)(6.5 - 6.5)/(9 - 6)0 6.2 (2/24/2014)6.5 (2/21/2012)(6.2 - 6.5)/(10 - 6)-0.075 6.2 (8/5/2014)6.5 (2/21/2012)(6.2 - 6.5)/(11 - 6)-0.06 6.2 (2/10/2015)6.5 (2/21/2012)(6.2 - 6.5)/(12 - 6)-0.05 6.3 (8/25/2015)6.5 (2/21/2012)(6.3 - 6.5)/(13 - 6)-0.0285714 6.6 (2/25/2016)6.5 (2/21/2012)(6.6 - 6.5)/(14 - 6)0.0125 6.4 (8/10/2016)6.5 (2/21/2012)(6.4 - 6.5)/(15 - 6)-0.0111111 6.1 (2/16/2017)6.5 (2/21/2012)(6.1 - 6.5)/(16 - 6)-0.04 6.3 (8/16/2017)6.5 (2/21/2012)(6.3 - 6.5)/(17 - 6)-0.0181818 5.8 (2/19/2018)6.5 (2/21/2012)(5.8 - 6.5)/(18 - 6)-0.0583333 6.1 (8/14/2018)6.5 (2/21/2012)(6.1 - 6.5)/(19 - 6)-0.0307692 5.9 (2/19/2013)6.4 (8/28/2012)(5.9 - 6.4)/(8 - 7)-0.5 6.5 (8/28/2013)6.4 (8/28/2012)(6.5 - 6.4)/(9 - 7)0.05 6.2 (2/24/2014)6.4 (8/28/2012)(6.2 - 6.4)/(10 - 7)-0.0666667 6.2 (8/5/2014)6.4 (8/28/2012)(6.2 - 6.4)/(11 - 7)-0.05 6.2 (2/10/2015)6.4 (8/28/2012)(6.2 - 6.4)/(12 - 7)-0.04 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 32 6.3 (8/25/2015)6.4 (8/28/2012)(6.3 - 6.4)/(13 - 7)-0.0166667 6.6 (2/25/2016)6.4 (8/28/2012)(6.6 - 6.4)/(14 - 7)0.0285714 6.4 (8/10/2016)6.4 (8/28/2012)(6.4 - 6.4)/(15 - 7)0 6.1 (2/16/2017)6.4 (8/28/2012)(6.1 - 6.4)/(16 - 7)-0.0333333 6.3 (8/16/2017)6.4 (8/28/2012)(6.3 - 6.4)/(17 - 7)-0.01 5.8 (2/19/2018)6.4 (8/28/2012)(5.8 - 6.4)/(18 - 7)-0.0545455 6.1 (8/14/2018)6.4 (8/28/2012)(6.1 - 6.4)/(19 - 7)-0.025 6.5 (8/28/2013)5.9 (2/19/2013)(6.5 - 5.9)/(9 - 8)0.6 6.2 (2/24/2014)5.9 (2/19/2013)(6.2 - 5.9)/(10 - 8)0.15 6.2 (8/5/2014)5.9 (2/19/2013)(6.2 - 5.9)/(11 - 8)0.1 6.2 (2/10/2015)5.9 (2/19/2013)(6.2 - 5.9)/(12 - 8)0.075 6.3 (8/25/2015)5.9 (2/19/2013)(6.3 - 5.9)/(13 - 8)0.08 6.6 (2/25/2016)5.9 (2/19/2013)(6.6 - 5.9)/(14 - 8)0.116667 6.4 (8/10/2016)5.9 (2/19/2013)(6.4 - 5.9)/(15 - 8)0.0714286 6.1 (2/16/2017)5.9 (2/19/2013)(6.1 - 5.9)/(16 - 8)0.025 6.3 (8/16/2017)5.9 (2/19/2013)(6.3 - 5.9)/(17 - 8)0.0444444 5.8 (2/19/2018)5.9 (2/19/2013)(5.8 - 5.9)/(18 - 8)-0.01 6.1 (8/14/2018)5.9 (2/19/2013)(6.1 - 5.9)/(19 - 8)0.0181818 6.2 (2/24/2014)6.5 (8/28/2013)(6.2 - 6.5)/(10 - 9)-0.3 6.2 (8/5/2014)6.5 (8/28/2013)(6.2 - 6.5)/(11 - 9)-0.15 6.2 (2/10/2015)6.5 (8/28/2013)(6.2 - 6.5)/(12 - 9)-0.1 6.3 (8/25/2015)6.5 (8/28/2013)(6.3 - 6.5)/(13 - 9)-0.05 6.6 (2/25/2016)6.5 (8/28/2013)(6.6 - 6.5)/(14 - 9)0.02 6.4 (8/10/2016)6.5 (8/28/2013)(6.4 - 6.5)/(15 - 9)-0.0166667 6.1 (2/16/2017)6.5 (8/28/2013)(6.1 - 6.5)/(16 - 9)-0.0571429 6.3 (8/16/2017)6.5 (8/28/2013)(6.3 - 6.5)/(17 - 9)-0.025 5.8 (2/19/2018)6.5 (8/28/2013)(5.8 - 6.5)/(18 - 9)-0.0777778 6.1 (8/14/2018)6.5 (8/28/2013)(6.1 - 6.5)/(19 - 9)-0.04 6.2 (8/5/2014)6.2 (2/24/2014)(6.2 - 6.2)/(11 - 10)0 6.2 (2/10/2015)6.2 (2/24/2014)(6.2 - 6.2)/(12 - 10)0 6.3 (8/25/2015)6.2 (2/24/2014)(6.3 - 6.2)/(13 - 10)0.0333333 6.6 (2/25/2016)6.2 (2/24/2014)(6.6 - 6.2)/(14 - 10)0.1 6.4 (8/10/2016)6.2 (2/24/2014)(6.4 - 6.2)/(15 - 10)0.04 6.1 (2/16/2017)6.2 (2/24/2014)(6.1 - 6.2)/(16 - 10)-0.0166667 6.3 (8/16/2017)6.2 (2/24/2014)(6.3 - 6.2)/(17 - 10)0.0142857 5.8 (2/19/2018)6.2 (2/24/2014)(5.8 - 6.2)/(18 - 10)-0.05 6.1 (8/14/2018)6.2 (2/24/2014)(6.1 - 6.2)/(19 - 10)-0.0111111 6.2 (2/10/2015)6.2 (8/5/2014)(6.2 - 6.2)/(12 - 11)0 6.3 (8/25/2015)6.2 (8/5/2014)(6.3 - 6.2)/(13 - 11)0.05 6.6 (2/25/2016)6.2 (8/5/2014)(6.6 - 6.2)/(14 - 11)0.133333 6.4 (8/10/2016)6.2 (8/5/2014)(6.4 - 6.2)/(15 - 11)0.05 6.1 (2/16/2017)6.2 (8/5/2014)(6.1 - 6.2)/(16 - 11)-0.02 6.3 (8/16/2017)6.2 (8/5/2014)(6.3 - 6.2)/(17 - 11)0.0166667 5.8 (2/19/2018)6.2 (8/5/2014)(5.8 - 6.2)/(18 - 11)-0.0571429 6.1 (8/14/2018)6.2 (8/5/2014)(6.1 - 6.2)/(19 - 11)-0.0125 6.3 (8/25/2015)6.2 (2/10/2015)(6.3 - 6.2)/(13 - 12)0.1 6.6 (2/25/2016)6.2 (2/10/2015)(6.6 - 6.2)/(14 - 12)0.2 6.4 (8/10/2016)6.2 (2/10/2015)(6.4 - 6.2)/(15 - 12)0.0666667 6.1 (2/16/2017)6.2 (2/10/2015)(6.1 - 6.2)/(16 - 12)-0.025 6.3 (8/16/2017)6.2 (2/10/2015)(6.3 - 6.2)/(17 - 12)0.02 5.8 (2/19/2018)6.2 (2/10/2015)(5.8 - 6.2)/(18 - 12)-0.0666667 6.1 (8/14/2018)6.2 (2/10/2015)(6.1 - 6.2)/(19 - 12)-0.0142857 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 33 6.6 (2/25/2016)6.3 (8/25/2015)(6.6 - 6.3)/(14 - 13)0.3 6.4 (8/10/2016)6.3 (8/25/2015)(6.4 - 6.3)/(15 - 13)0.05 6.1 (2/16/2017)6.3 (8/25/2015)(6.1 - 6.3)/(16 - 13)-0.0666667 6.3 (8/16/2017)6.3 (8/25/2015)(6.3 - 6.3)/(17 - 13)0 5.8 (2/19/2018)6.3 (8/25/2015)(5.8 - 6.3)/(18 - 13)-0.1 6.1 (8/14/2018)6.3 (8/25/2015)(6.1 - 6.3)/(19 - 13)-0.0333333 6.4 (8/10/2016)6.6 (2/25/2016)(6.4 - 6.6)/(15 - 14)-0.2 6.1 (2/16/2017)6.6 (2/25/2016)(6.1 - 6.6)/(16 - 14)-0.25 6.3 (8/16/2017)6.6 (2/25/2016)(6.3 - 6.6)/(17 - 14)-0.1 5.8 (2/19/2018)6.6 (2/25/2016)(5.8 - 6.6)/(18 - 14)-0.2 6.1 (8/14/2018)6.6 (2/25/2016)(6.1 - 6.6)/(19 - 14)-0.1 6.1 (2/16/2017)6.4 (8/10/2016)(6.1 - 6.4)/(16 - 15)-0.3 6.3 (8/16/2017)6.4 (8/10/2016)(6.3 - 6.4)/(17 - 15)-0.05 5.8 (2/19/2018)6.4 (8/10/2016)(5.8 - 6.4)/(18 - 15)-0.2 6.1 (8/14/2018)6.4 (8/10/2016)(6.1 - 6.4)/(19 - 15)-0.075 6.3 (8/16/2017)6.1 (2/16/2017)(6.3 - 6.1)/(17 - 16)0.2 5.8 (2/19/2018)6.1 (2/16/2017)(5.8 - 6.1)/(18 - 16)-0.15 6.1 (8/14/2018)6.1 (2/16/2017)(6.1 - 6.1)/(19 - 16)0 5.8 (2/19/2018)6.3 (8/16/2017)(5.8 - 6.3)/(18 - 17)-0.5 6.1 (8/14/2018)6.3 (8/16/2017)(6.1 - 6.3)/(19 - 17)-0.1 6.1 (8/14/2018)5.8 (2/19/2018)(6.1 - 5.8)/(19 - 18)0.3 Number of Q values = 171 Ordered Q Values n Q 1 -0.5 2 -0.5 3 -0.4 4 -0.3 5 -0.3 6 -0.3 7 -0.25 8 -0.2 9 -0.2 10 -0.2 11 -0.2 12 -0.2 13 -0.2 14 -0.15 15 -0.15 16 -0.125 17 -0.1 18 -0.1 19 -0.1 20 -0.1 21 -0.1 22 -0.1 23 -0.1 24 -0.1 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 34 25 -0.0857143 26 -0.0777778 27 -0.075 28 -0.075 29 -0.075 30 -0.0666667 31 -0.0666667 32 -0.0666667 33 -0.06 34 -0.0583333 35 -0.0571429 36 -0.0571429 37 -0.0545455 38 -0.05 39 -0.05 40 -0.05 41 -0.05 42 -0.05 43 -0.05 44 -0.0411765 45 -0.04 46 -0.04 47 -0.04 48 -0.04 49 -0.0333333 50 -0.0333333 51 -0.0333333 52 -0.0333333 53 -0.0333333 54 -0.0333333 55 -0.0307692 56 -0.03 57 -0.0285714 58 -0.0285714 59 -0.0285714 60 -0.0272727 61 -0.0266667 62 -0.025 63 -0.025 64 -0.025 65 -0.025 66 -0.0230769 67 -0.0222222 68 -0.0222222 69 -0.02 70 -0.01875 71 -0.01875 72 -0.0181818 73 -0.0166667 74 -0.0166667 75 -0.0166667 76 -0.0166667 77 -0.0166667 78 -0.0153846 79 -0.0142857 80 -0.0125 81 -0.0125 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 35 82 -0.0111111 83 -0.0111111 84 -0.01 85 -0.01 86 -0.01 87 -0.00833333 88 -0.00714286 89 -0.00714286 90 -0.00666667 91 0 92 0 93 0 94 0 95 0 96 0 97 0 98 0 99 0 100 0 101 0 102 0 103 0 104 0 105 0 106 0 107 0.00714286 108 0.00769231 109 0.00769231 110 0.00909091 111 0.01 112 0.0111111 113 0.0111111 114 0.0125 115 0.0125 116 0.0133333 117 0.0142857 118 0.0166667 119 0.0166667 120 0.0181818 121 0.0181818 122 0.0181818 123 0.0181818 124 0.02 125 0.02 126 0.0230769 127 0.025 128 0.025 129 0.0285714 130 0.0285714 131 0.0333333 132 0.0333333 133 0.0333333 134 0.0375 135 0.04 136 0.04 137 0.04 138 0.04 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 36 139 0.0416667 140 0.0444444 141 0.05 142 0.05 143 0.05 144 0.05 145 0.05 146 0.0571429 147 0.06 148 0.06 149 0.0666667 150 0.0666667 151 0.0666667 152 0.0714286 153 0.075 154 0.08 155 0.1 156 0.1 157 0.1 158 0.1 159 0.116667 160 0.125 161 0.133333 162 0.15 163 0.15 164 0.2 165 0.2 166 0.2 167 0.3 168 0.3 169 0.3 170 0.5 171 0.6 Sen's Estimator (Median Q) is -0.01 Tied Group Value Members 1 6.5 3 2 6.1 3 3 6.4 3 4 6.2 4 5 6.3 2 Time Period Observations 2/18/2008 1 8/20/2009 1 8/24/2010 1 2/23/2011 1 8/24/2011 1 2/21/2012 1 8/28/2012 1 2/19/2013 1 8/28/2013 1 2/24/2014 1 8/5/2014 1 2/10/2015 1 8/25/2015 1 2/25/2016 1 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 37 8/10/2016 1 2/16/2017 1 8/16/2017 1 2/19/2018 1 8/14/2018 1 There are 0 time periods with multiple data A = 372 B = 0 C = 42 D = 0 E = 32 F = 0 a = 14706 b = 52326 c = 684 Group Variance = 796.333 For 90% confidence interval (two-tailed), Z at (1-0.9)/2 = 1.64485 C = 46.4167 M1 = (171 - 46.4167)/2.0 = 62.2916 M2 = (171 + 46.4167)/2.0 + 1 = 109.708 Lower limit is -0.025 = Q(62) Upper limit is 0.00909091 = Q(110) -0.025 < 0 < 0.00909091 indicating no trend in data. DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 38 Sen's Slope Analysis Parameter: PH (field measurement) Location: MW-17 Original Data (Not Transformed) Non-Detects Replaced with Detection Limit 90% Confidence Level Xj Xk (Xj - Xk)/(j-k)Q 5.1 (8/20/2009)5.2 (2/18/2008)(5.1 - 5.2)/(2 - 1)-0.1 5.2 (8/24/2010)5.2 (2/18/2008)(5.2 - 5.2)/(3 - 1)0 5.3 (2/23/2011)5.2 (2/18/2008)(5.3 - 5.2)/(4 - 1)0.0333333 5.1 (8/24/2011)5.2 (2/18/2008)(5.1 - 5.2)/(5 - 1)-0.025 5.5 (2/21/2012)5.2 (2/18/2008)(5.5 - 5.2)/(6 - 1)0.06 5.4 (8/28/2012)5.2 (2/18/2008)(5.4 - 5.2)/(7 - 1)0.0333333 5.1 (2/19/2013)5.2 (2/18/2008)(5.1 - 5.2)/(8 - 1)-0.0142857 5 (8/28/2013)5.2 (2/18/2008)(5 - 5.2)/(9 - 1)-0.025 5 (2/24/2014)5.2 (2/18/2008)(5 - 5.2)/(10 - 1)-0.0222222 5 (8/5/2014)5.2 (2/18/2008)(5 - 5.2)/(11 - 1)-0.02 5.2 (2/10/2015)5.2 (2/18/2008)(5.2 - 5.2)/(12 - 1)0 5.2 (8/25/2015)5.2 (2/18/2008)(5.2 - 5.2)/(13 - 1)0 5.3 (2/25/2016)5.2 (2/18/2008)(5.3 - 5.2)/(14 - 1)0.00769231 5 (8/10/2016)5.2 (2/18/2008)(5 - 5.2)/(15 - 1)-0.0142857 5.1 (2/16/2017)5.2 (2/18/2008)(5.1 - 5.2)/(16 - 1)-0.00666667 5 (8/16/2017)5.2 (2/18/2008)(5 - 5.2)/(17 - 1)-0.0125 4.9 (2/19/2018)5.2 (2/18/2008)(4.9 - 5.2)/(18 - 1)-0.0176471 4.7 (8/14/2018)5.2 (2/18/2008)(4.7 - 5.2)/(19 - 1)-0.0277778 5.2 (8/24/2010)5.1 (8/20/2009)(5.2 - 5.1)/(3 - 2)0.1 5.3 (2/23/2011)5.1 (8/20/2009)(5.3 - 5.1)/(4 - 2)0.1 5.1 (8/24/2011)5.1 (8/20/2009)(5.1 - 5.1)/(5 - 2)0 5.5 (2/21/2012)5.1 (8/20/2009)(5.5 - 5.1)/(6 - 2)0.1 5.4 (8/28/2012)5.1 (8/20/2009)(5.4 - 5.1)/(7 - 2)0.06 5.1 (2/19/2013)5.1 (8/20/2009)(5.1 - 5.1)/(8 - 2)0 5 (8/28/2013)5.1 (8/20/2009)(5 - 5.1)/(9 - 2)-0.0142857 5 (2/24/2014)5.1 (8/20/2009)(5 - 5.1)/(10 - 2)-0.0125 5 (8/5/2014)5.1 (8/20/2009)(5 - 5.1)/(11 - 2)-0.0111111 5.2 (2/10/2015)5.1 (8/20/2009)(5.2 - 5.1)/(12 - 2)0.01 5.2 (8/25/2015)5.1 (8/20/2009)(5.2 - 5.1)/(13 - 2)0.00909091 5.3 (2/25/2016)5.1 (8/20/2009)(5.3 - 5.1)/(14 - 2)0.0166667 5 (8/10/2016)5.1 (8/20/2009)(5 - 5.1)/(15 - 2)-0.00769231 5.1 (2/16/2017)5.1 (8/20/2009)(5.1 - 5.1)/(16 - 2)0 5 (8/16/2017)5.1 (8/20/2009)(5 - 5.1)/(17 - 2)-0.00666667 4.9 (2/19/2018)5.1 (8/20/2009)(4.9 - 5.1)/(18 - 2)-0.0125 4.7 (8/14/2018)5.1 (8/20/2009)(4.7 - 5.1)/(19 - 2)-0.0235294 5.3 (2/23/2011)5.2 (8/24/2010)(5.3 - 5.2)/(4 - 3)0.1 5.1 (8/24/2011)5.2 (8/24/2010)(5.1 - 5.2)/(5 - 3)-0.05 5.5 (2/21/2012)5.2 (8/24/2010)(5.5 - 5.2)/(6 - 3)0.1 5.4 (8/28/2012)5.2 (8/24/2010)(5.4 - 5.2)/(7 - 3)0.05 5.1 (2/19/2013)5.2 (8/24/2010)(5.1 - 5.2)/(8 - 3)-0.02 5 (8/28/2013)5.2 (8/24/2010)(5 - 5.2)/(9 - 3)-0.0333333 5 (2/24/2014)5.2 (8/24/2010)(5 - 5.2)/(10 - 3)-0.0285714 5 (8/5/2014)5.2 (8/24/2010)(5 - 5.2)/(11 - 3)-0.025 5.2 (2/10/2015)5.2 (8/24/2010)(5.2 - 5.2)/(12 - 3)0 5.2 (8/25/2015)5.2 (8/24/2010)(5.2 - 5.2)/(13 - 3)0 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 39 5.3 (2/25/2016)5.2 (8/24/2010)(5.3 - 5.2)/(14 - 3)0.00909091 5 (8/10/2016)5.2 (8/24/2010)(5 - 5.2)/(15 - 3)-0.0166667 5.1 (2/16/2017)5.2 (8/24/2010)(5.1 - 5.2)/(16 - 3)-0.00769231 5 (8/16/2017)5.2 (8/24/2010)(5 - 5.2)/(17 - 3)-0.0142857 4.9 (2/19/2018)5.2 (8/24/2010)(4.9 - 5.2)/(18 - 3)-0.02 4.7 (8/14/2018)5.2 (8/24/2010)(4.7 - 5.2)/(19 - 3)-0.03125 5.1 (8/24/2011)5.3 (2/23/2011)(5.1 - 5.3)/(5 - 4)-0.2 5.5 (2/21/2012)5.3 (2/23/2011)(5.5 - 5.3)/(6 - 4)0.1 5.4 (8/28/2012)5.3 (2/23/2011)(5.4 - 5.3)/(7 - 4)0.0333333 5.1 (2/19/2013)5.3 (2/23/2011)(5.1 - 5.3)/(8 - 4)-0.05 5 (8/28/2013)5.3 (2/23/2011)(5 - 5.3)/(9 - 4)-0.06 5 (2/24/2014)5.3 (2/23/2011)(5 - 5.3)/(10 - 4)-0.05 5 (8/5/2014)5.3 (2/23/2011)(5 - 5.3)/(11 - 4)-0.0428571 5.2 (2/10/2015)5.3 (2/23/2011)(5.2 - 5.3)/(12 - 4)-0.0125 5.2 (8/25/2015)5.3 (2/23/2011)(5.2 - 5.3)/(13 - 4)-0.0111111 5.3 (2/25/2016)5.3 (2/23/2011)(5.3 - 5.3)/(14 - 4)0 5 (8/10/2016)5.3 (2/23/2011)(5 - 5.3)/(15 - 4)-0.0272727 5.1 (2/16/2017)5.3 (2/23/2011)(5.1 - 5.3)/(16 - 4)-0.0166667 5 (8/16/2017)5.3 (2/23/2011)(5 - 5.3)/(17 - 4)-0.0230769 4.9 (2/19/2018)5.3 (2/23/2011)(4.9 - 5.3)/(18 - 4)-0.0285714 4.7 (8/14/2018)5.3 (2/23/2011)(4.7 - 5.3)/(19 - 4)-0.04 5.5 (2/21/2012)5.1 (8/24/2011)(5.5 - 5.1)/(6 - 5)0.4 5.4 (8/28/2012)5.1 (8/24/2011)(5.4 - 5.1)/(7 - 5)0.15 5.1 (2/19/2013)5.1 (8/24/2011)(5.1 - 5.1)/(8 - 5)0 5 (8/28/2013)5.1 (8/24/2011)(5 - 5.1)/(9 - 5)-0.025 5 (2/24/2014)5.1 (8/24/2011)(5 - 5.1)/(10 - 5)-0.02 5 (8/5/2014)5.1 (8/24/2011)(5 - 5.1)/(11 - 5)-0.0166667 5.2 (2/10/2015)5.1 (8/24/2011)(5.2 - 5.1)/(12 - 5)0.0142857 5.2 (8/25/2015)5.1 (8/24/2011)(5.2 - 5.1)/(13 - 5)0.0125 5.3 (2/25/2016)5.1 (8/24/2011)(5.3 - 5.1)/(14 - 5)0.0222222 5 (8/10/2016)5.1 (8/24/2011)(5 - 5.1)/(15 - 5)-0.01 5.1 (2/16/2017)5.1 (8/24/2011)(5.1 - 5.1)/(16 - 5)0 5 (8/16/2017)5.1 (8/24/2011)(5 - 5.1)/(17 - 5)-0.00833333 4.9 (2/19/2018)5.1 (8/24/2011)(4.9 - 5.1)/(18 - 5)-0.0153846 4.7 (8/14/2018)5.1 (8/24/2011)(4.7 - 5.1)/(19 - 5)-0.0285714 5.4 (8/28/2012)5.5 (2/21/2012)(5.4 - 5.5)/(7 - 6)-0.1 5.1 (2/19/2013)5.5 (2/21/2012)(5.1 - 5.5)/(8 - 6)-0.2 5 (8/28/2013)5.5 (2/21/2012)(5 - 5.5)/(9 - 6)-0.166667 5 (2/24/2014)5.5 (2/21/2012)(5 - 5.5)/(10 - 6)-0.125 5 (8/5/2014)5.5 (2/21/2012)(5 - 5.5)/(11 - 6)-0.1 5.2 (2/10/2015)5.5 (2/21/2012)(5.2 - 5.5)/(12 - 6)-0.05 5.2 (8/25/2015)5.5 (2/21/2012)(5.2 - 5.5)/(13 - 6)-0.0428571 5.3 (2/25/2016)5.5 (2/21/2012)(5.3 - 5.5)/(14 - 6)-0.025 5 (8/10/2016)5.5 (2/21/2012)(5 - 5.5)/(15 - 6)-0.0555556 5.1 (2/16/2017)5.5 (2/21/2012)(5.1 - 5.5)/(16 - 6)-0.04 5 (8/16/2017)5.5 (2/21/2012)(5 - 5.5)/(17 - 6)-0.0454545 4.9 (2/19/2018)5.5 (2/21/2012)(4.9 - 5.5)/(18 - 6)-0.05 4.7 (8/14/2018)5.5 (2/21/2012)(4.7 - 5.5)/(19 - 6)-0.0615385 5.1 (2/19/2013)5.4 (8/28/2012)(5.1 - 5.4)/(8 - 7)-0.3 5 (8/28/2013)5.4 (8/28/2012)(5 - 5.4)/(9 - 7)-0.2 5 (2/24/2014)5.4 (8/28/2012)(5 - 5.4)/(10 - 7)-0.133333 5 (8/5/2014)5.4 (8/28/2012)(5 - 5.4)/(11 - 7)-0.1 5.2 (2/10/2015)5.4 (8/28/2012)(5.2 - 5.4)/(12 - 7)-0.04 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 40 5.2 (8/25/2015)5.4 (8/28/2012)(5.2 - 5.4)/(13 - 7)-0.0333333 5.3 (2/25/2016)5.4 (8/28/2012)(5.3 - 5.4)/(14 - 7)-0.0142857 5 (8/10/2016)5.4 (8/28/2012)(5 - 5.4)/(15 - 7)-0.05 5.1 (2/16/2017)5.4 (8/28/2012)(5.1 - 5.4)/(16 - 7)-0.0333333 5 (8/16/2017)5.4 (8/28/2012)(5 - 5.4)/(17 - 7)-0.04 4.9 (2/19/2018)5.4 (8/28/2012)(4.9 - 5.4)/(18 - 7)-0.0454545 4.7 (8/14/2018)5.4 (8/28/2012)(4.7 - 5.4)/(19 - 7)-0.0583333 5 (8/28/2013)5.1 (2/19/2013)(5 - 5.1)/(9 - 8)-0.1 5 (2/24/2014)5.1 (2/19/2013)(5 - 5.1)/(10 - 8)-0.05 5 (8/5/2014)5.1 (2/19/2013)(5 - 5.1)/(11 - 8)-0.0333333 5.2 (2/10/2015)5.1 (2/19/2013)(5.2 - 5.1)/(12 - 8)0.025 5.2 (8/25/2015)5.1 (2/19/2013)(5.2 - 5.1)/(13 - 8)0.02 5.3 (2/25/2016)5.1 (2/19/2013)(5.3 - 5.1)/(14 - 8)0.0333333 5 (8/10/2016)5.1 (2/19/2013)(5 - 5.1)/(15 - 8)-0.0142857 5.1 (2/16/2017)5.1 (2/19/2013)(5.1 - 5.1)/(16 - 8)0 5 (8/16/2017)5.1 (2/19/2013)(5 - 5.1)/(17 - 8)-0.0111111 4.9 (2/19/2018)5.1 (2/19/2013)(4.9 - 5.1)/(18 - 8)-0.02 4.7 (8/14/2018)5.1 (2/19/2013)(4.7 - 5.1)/(19 - 8)-0.0363636 5 (2/24/2014)5 (8/28/2013)(5 - 5)/(10 - 9)0 5 (8/5/2014)5 (8/28/2013)(5 - 5)/(11 - 9)0 5.2 (2/10/2015)5 (8/28/2013)(5.2 - 5)/(12 - 9)0.0666667 5.2 (8/25/2015)5 (8/28/2013)(5.2 - 5)/(13 - 9)0.05 5.3 (2/25/2016)5 (8/28/2013)(5.3 - 5)/(14 - 9)0.06 5 (8/10/2016)5 (8/28/2013)(5 - 5)/(15 - 9)0 5.1 (2/16/2017)5 (8/28/2013)(5.1 - 5)/(16 - 9)0.0142857 5 (8/16/2017)5 (8/28/2013)(5 - 5)/(17 - 9)0 4.9 (2/19/2018)5 (8/28/2013)(4.9 - 5)/(18 - 9)-0.0111111 4.7 (8/14/2018)5 (8/28/2013)(4.7 - 5)/(19 - 9)-0.03 5 (8/5/2014)5 (2/24/2014)(5 - 5)/(11 - 10)0 5.2 (2/10/2015)5 (2/24/2014)(5.2 - 5)/(12 - 10)0.1 5.2 (8/25/2015)5 (2/24/2014)(5.2 - 5)/(13 - 10)0.0666667 5.3 (2/25/2016)5 (2/24/2014)(5.3 - 5)/(14 - 10)0.075 5 (8/10/2016)5 (2/24/2014)(5 - 5)/(15 - 10)0 5.1 (2/16/2017)5 (2/24/2014)(5.1 - 5)/(16 - 10)0.0166667 5 (8/16/2017)5 (2/24/2014)(5 - 5)/(17 - 10)0 4.9 (2/19/2018)5 (2/24/2014)(4.9 - 5)/(18 - 10)-0.0125 4.7 (8/14/2018)5 (2/24/2014)(4.7 - 5)/(19 - 10)-0.0333333 5.2 (2/10/2015)5 (8/5/2014)(5.2 - 5)/(12 - 11)0.2 5.2 (8/25/2015)5 (8/5/2014)(5.2 - 5)/(13 - 11)0.1 5.3 (2/25/2016)5 (8/5/2014)(5.3 - 5)/(14 - 11)0.1 5 (8/10/2016)5 (8/5/2014)(5 - 5)/(15 - 11)0 5.1 (2/16/2017)5 (8/5/2014)(5.1 - 5)/(16 - 11)0.02 5 (8/16/2017)5 (8/5/2014)(5 - 5)/(17 - 11)0 4.9 (2/19/2018)5 (8/5/2014)(4.9 - 5)/(18 - 11)-0.0142857 4.7 (8/14/2018)5 (8/5/2014)(4.7 - 5)/(19 - 11)-0.0375 5.2 (8/25/2015)5.2 (2/10/2015)(5.2 - 5.2)/(13 - 12)0 5.3 (2/25/2016)5.2 (2/10/2015)(5.3 - 5.2)/(14 - 12)0.05 5 (8/10/2016)5.2 (2/10/2015)(5 - 5.2)/(15 - 12)-0.0666667 5.1 (2/16/2017)5.2 (2/10/2015)(5.1 - 5.2)/(16 - 12)-0.025 5 (8/16/2017)5.2 (2/10/2015)(5 - 5.2)/(17 - 12)-0.04 4.9 (2/19/2018)5.2 (2/10/2015)(4.9 - 5.2)/(18 - 12)-0.05 4.7 (8/14/2018)5.2 (2/10/2015)(4.7 - 5.2)/(19 - 12)-0.0714286 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 41 5.3 (2/25/2016)5.2 (8/25/2015)(5.3 - 5.2)/(14 - 13)0.1 5 (8/10/2016)5.2 (8/25/2015)(5 - 5.2)/(15 - 13)-0.1 5.1 (2/16/2017)5.2 (8/25/2015)(5.1 - 5.2)/(16 - 13)-0.0333333 5 (8/16/2017)5.2 (8/25/2015)(5 - 5.2)/(17 - 13)-0.05 4.9 (2/19/2018)5.2 (8/25/2015)(4.9 - 5.2)/(18 - 13)-0.06 4.7 (8/14/2018)5.2 (8/25/2015)(4.7 - 5.2)/(19 - 13)-0.0833333 5 (8/10/2016)5.3 (2/25/2016)(5 - 5.3)/(15 - 14)-0.3 5.1 (2/16/2017)5.3 (2/25/2016)(5.1 - 5.3)/(16 - 14)-0.1 5 (8/16/2017)5.3 (2/25/2016)(5 - 5.3)/(17 - 14)-0.1 4.9 (2/19/2018)5.3 (2/25/2016)(4.9 - 5.3)/(18 - 14)-0.1 4.7 (8/14/2018)5.3 (2/25/2016)(4.7 - 5.3)/(19 - 14)-0.12 5.1 (2/16/2017)5 (8/10/2016)(5.1 - 5)/(16 - 15)0.1 5 (8/16/2017)5 (8/10/2016)(5 - 5)/(17 - 15)0 4.9 (2/19/2018)5 (8/10/2016)(4.9 - 5)/(18 - 15)-0.0333333 4.7 (8/14/2018)5 (8/10/2016)(4.7 - 5)/(19 - 15)-0.075 5 (8/16/2017)5.1 (2/16/2017)(5 - 5.1)/(17 - 16)-0.1 4.9 (2/19/2018)5.1 (2/16/2017)(4.9 - 5.1)/(18 - 16)-0.1 4.7 (8/14/2018)5.1 (2/16/2017)(4.7 - 5.1)/(19 - 16)-0.133333 4.9 (2/19/2018)5 (8/16/2017)(4.9 - 5)/(18 - 17)-0.1 4.7 (8/14/2018)5 (8/16/2017)(4.7 - 5)/(19 - 17)-0.15 4.7 (8/14/2018)4.9 (2/19/2018)(4.7 - 4.9)/(19 - 18)-0.2 Number of Q values = 171 Ordered Q Values n Q 1 -0.3 2 -0.3 3 -0.2 4 -0.2 5 -0.2 6 -0.2 7 -0.166667 8 -0.15 9 -0.133333 10 -0.133333 11 -0.125 12 -0.12 13 -0.1 14 -0.1 15 -0.1 16 -0.1 17 -0.1 18 -0.1 19 -0.1 20 -0.1 21 -0.1 22 -0.1 23 -0.1 24 -0.1 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 42 25 -0.0833333 26 -0.075 27 -0.0714286 28 -0.0666667 29 -0.0615385 30 -0.06 31 -0.06 32 -0.0583333 33 -0.0555556 34 -0.05 35 -0.05 36 -0.05 37 -0.05 38 -0.05 39 -0.05 40 -0.05 41 -0.05 42 -0.05 43 -0.0454545 44 -0.0454545 45 -0.0428571 46 -0.0428571 47 -0.04 48 -0.04 49 -0.04 50 -0.04 51 -0.04 52 -0.0375 53 -0.0363636 54 -0.0333333 55 -0.0333333 56 -0.0333333 57 -0.0333333 58 -0.0333333 59 -0.0333333 60 -0.0333333 61 -0.03125 62 -0.03 63 -0.0285714 64 -0.0285714 65 -0.0285714 66 -0.0277778 67 -0.0272727 68 -0.025 69 -0.025 70 -0.025 71 -0.025 72 -0.025 73 -0.025 74 -0.0235294 75 -0.0230769 76 -0.0222222 77 -0.02 78 -0.02 79 -0.02 80 -0.02 81 -0.02 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 43 82 -0.0176471 83 -0.0166667 84 -0.0166667 85 -0.0166667 86 -0.0153846 87 -0.0142857 88 -0.0142857 89 -0.0142857 90 -0.0142857 91 -0.0142857 92 -0.0142857 93 -0.0142857 94 -0.0125 95 -0.0125 96 -0.0125 97 -0.0125 98 -0.0125 99 -0.0111111 100 -0.0111111 101 -0.0111111 102 -0.0111111 103 -0.01 104 -0.00833333 105 -0.00769231 106 -0.00769231 107 -0.00666667 108 -0.00666667 109 0 110 0 111 0 112 0 113 0 114 0 115 0 116 0 117 0 118 0 119 0 120 0 121 0 122 0 123 0 124 0 125 0 126 0 127 0 128 0 129 0 130 0 131 0 132 0.00769231 133 0.00909091 134 0.00909091 135 0.01 136 0.0125 137 0.0142857 138 0.0142857 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 44 139 0.0166667 140 0.0166667 141 0.02 142 0.02 143 0.0222222 144 0.025 145 0.0333333 146 0.0333333 147 0.0333333 148 0.0333333 149 0.05 150 0.05 151 0.05 152 0.06 153 0.06 154 0.06 155 0.0666667 156 0.0666667 157 0.075 158 0.1 159 0.1 160 0.1 161 0.1 162 0.1 163 0.1 164 0.1 165 0.1 166 0.1 167 0.1 168 0.1 169 0.15 170 0.2 171 0.4 Sen's Estimator (Median Q) is -0.0153846 Tied Group Value Members 1 5.2 4 2 5.1 4 3 5.3 2 4 5 5 Time Period Observations 2/18/2008 1 8/20/2009 1 8/24/2010 1 2/23/2011 1 8/24/2011 1 2/21/2012 1 8/28/2012 1 2/19/2013 1 8/28/2013 1 2/24/2014 1 8/5/2014 1 2/10/2015 1 8/25/2015 1 2/25/2016 1 8/10/2016 1 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 45 2/16/2017 1 8/16/2017 1 2/19/2018 1 8/14/2018 1 There are 0 time periods with multiple data A = 630 B = 0 C = 108 D = 0 E = 46 F = 0 a = 14706 b = 52326 c = 684 Group Variance = 782 For 90% confidence interval (two-tailed), Z at (1-0.9)/2 = 1.64485 C = 45.9971 M1 = (171 - 45.9971)/2.0 = 62.5014 M2 = (171 + 45.9971)/2.0 + 1 = 109.499 Lower limit is -0.0285714 = Q(63) Upper limit is 0 = Q(109) -0.0285714 < 0 < 0 indicating no trend in data. DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 46 PH (field measurement) Multi-Well Time-Series Graph Sample DateConcentration (ppb)0 1 2 3 4 5 6 7 MW- 8 MW- 9 MW-10 MW-11 MW-12 MW-172/18/20088/18/20092/16/20118/16/20122/14/20148/15/20152/12/20178/14/2018DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 1 Concentrations (ppb) Parameter: Selenium Original Data (Not Transformed) Non-Detects Replaced with Detection Limit Total Measurements: 114 Total Non-Detect: 74 Percent Non-Detects: 64.9123% Total Background Measurements: 19 There is 1 background location Loc.Meas.ND Date Conc.Original MW- 8 19 10 (52.6316%)2/18/2008 4.6 4.6 8/20/2009 ND<0.12 ND<0.12 8/24/2010 0.6 0.6 2/23/2011 0.4 0.4 8/24/2011 ND<0.2 ND<0.2 2/21/2012 ND<0.2 ND<0.2 8/28/2012 ND<0.17 ND<0.17 2/19/2013 ND<0.17 ND<0.17 8/28/2013 0.08 0.08 2/24/2014 0.55 0.55 8/5/2014 0.65 0.65 2/10/2015 0.31 0.31 8/25/2015 ND<0.22 ND<0.22 2/25/2016 ND<0.54 ND<0.54 8/10/2016 ND<0.54 ND<0.54 2/16/2017 ND<0.54 ND<0.54 8/16/2017 0.55 0.55 2/19/2018 ND<0.51 ND<0.51 8/14/2018 0.22 0.22 There are 5 compliance locations Loc.Meas.ND Date Conc.Original MW- 9 19 10 (52.6316%)2/18/2008 1.4 1.4 8/20/2009 0.9 0.9 8/24/2010 0.4 0.4 2/23/2011 ND<0.32 ND<0.32 8/24/2011 0.49 0.49 2/21/2012 ND<0.2 ND<0.2 8/28/2012 ND<0.17 ND<0.17 2/19/2013 ND<0.17 ND<0.17 8/28/2013 0.11 0.11 2/24/2014 0.92 0.92 8/5/2014 0.39 0.39 2/10/2015 0.37 0.37 8/25/2015 ND<0.22 ND<0.22 2/25/2016 ND<0.54 ND<0.54 8/10/2016 ND<0.54 ND<0.54 2/16/2017 ND<0.54 ND<0.54 8/16/2017 0.55 0.55 2/19/2018 ND<0.51 ND<0.51 8/14/2018 ND<0.15 ND<0.15 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 2 MW-10 19 15 (78.9474%)2/18/2008 5 5 8/20/2009 ND<0.12 ND<0.12 8/24/2010 ND<0.32 ND<0.32 2/23/2011 ND<0.32 ND<0.32 8/24/2011 ND<0.2 ND<0.2 2/21/2012 ND<0.2 ND<0.2 8/28/2012 ND<0.17 ND<0.17 2/19/2013 ND<0.17 ND<0.17 8/28/2013 0.43 0.43 2/24/2014 1.2 1.2 8/5/2014 0.52 0.52 2/10/2015 ND<0.16 ND<0.16 8/25/2015 ND<0.22 ND<0.22 2/25/2016 ND<0.54 ND<0.54 8/10/2016 ND<0.54 ND<0.54 2/16/2017 ND<0.54 ND<0.54 8/16/2017 ND<0.51 ND<0.51 2/19/2018 ND<0.51 ND<0.51 8/14/2018 ND<0.15 ND<0.15 MW-11 19 15 (78.9474%)2/18/2008 ND<0.14 ND<0.14 8/20/2009 0.2 0.2 8/24/2010 ND<0.32 ND<0.32 2/23/2011 ND<0.32 ND<0.32 8/24/2011 ND<0.2 ND<0.2 2/21/2012 ND<0.2 ND<0.2 8/28/2012 ND<0.17 ND<0.17 2/19/2013 ND<0.17 ND<0.17 8/28/2013 ND<0.06 ND<0.06 2/24/2014 0.54 0.54 8/5/2014 0.55 0.55 2/10/2015 0.4 0.4 8/25/2015 ND<0.22 ND<0.22 2/25/2016 ND<0.54 ND<0.54 8/10/2016 ND<0.54 ND<0.54 2/16/2017 ND<0.54 ND<0.54 8/16/2017 ND<0.51 ND<0.51 2/19/2018 ND<0.51 ND<0.51 8/14/2018 ND<0.15 ND<0.15 MW-12 19 11 (57.8947%)2/18/2008 3.5 3.5 8/20/2009 0.2 0.2 8/24/2010 ND<0.32 ND<0.32 2/23/2011 ND<0.32 ND<0.32 8/24/2011 1.2 1.2 2/21/2012 ND<0.2 ND<0.2 8/28/2012 ND<0.17 ND<0.17 2/19/2013 ND<0.17 ND<0.17 8/28/2013 0.07 0.07 2/24/2014 0.39 0.39 8/5/2014 0.8 0.8 2/10/2015 0.22 0.22 8/25/2015 ND<0.22 ND<0.22 2/25/2016 ND<0.54 ND<0.54 8/10/2016 ND<0.54 ND<0.54 2/16/2017 ND<0.54 ND<0.54 8/16/2017 ND<0.51 ND<0.51 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 3 2/19/2018 ND<0.51 ND<0.51 8/14/2018 0.76 0.76 MW-17 19 13 (68.4211%)2/18/2008 1.1 1.1 8/20/2009 0.2 0.2 8/24/2010 ND<0.32 ND<0.32 2/23/2011 ND<0.32 ND<0.32 8/24/2011 0.76 0.76 2/21/2012 ND<0.2 ND<0.2 8/28/2012 ND<0.17 ND<0.17 2/19/2013 ND<0.17 ND<0.17 8/28/2013 ND<0.06 ND<0.06 2/24/2014 0.32 0.32 8/5/2014 0.55 0.55 2/10/2015 0.58 0.58 8/25/2015 ND<0.22 ND<0.22 2/25/2016 ND<0.54 ND<0.54 8/10/2016 ND<0.54 ND<0.54 2/16/2017 ND<0.54 ND<0.54 8/16/2017 ND<0.51 ND<0.51 2/19/2018 ND<0.51 ND<0.51 8/14/2018 ND<0.15 ND<0.15 There are 0 unused locations Loc.Meas.ND Date Conc.Original DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 4 Non-Parametric Tolerance Interval Parameter: Selenium Original Data (Not Transformed) Non-Detects Replaced with Detection Limit Total Percent Non-Detects = 64.9123% Background measurements (n) = 19 Maximum Background Concentration = 4.6 Minimum Coverage = 85.4% Average Coverage = 95% Location Date Value Significant MW- 9 2/18/2008 1.4 FALSE MW- 9 8/20/2009 0.9 FALSE MW- 9 8/24/2010 0.4 FALSE MW- 9 2/23/2011 ND<0.32 FALSE MW- 9 8/24/2011 0.49 FALSE MW- 9 2/21/2012 ND<0.2 FALSE MW- 9 8/28/2012 ND<0.17 FALSE MW- 9 2/19/2013 ND<0.17 FALSE MW- 9 8/28/2013 0.11 FALSE MW- 9 2/24/2014 0.92 FALSE MW- 9 8/5/2014 0.39 FALSE MW- 9 2/10/2015 0.37 FALSE MW- 9 8/25/2015 ND<0.22 FALSE MW- 9 2/25/2016 ND<0.54 FALSE MW- 9 8/10/2016 ND<0.54 FALSE MW- 9 2/16/2017 ND<0.54 FALSE MW- 9 8/16/2017 0.55 FALSE MW- 9 2/19/2018 ND<0.51 FALSE MW- 9 8/14/2018 ND<0.15 FALSE MW-10 2/18/2008 5 TRUE MW-10 8/20/2009 ND<0.12 FALSE MW-10 8/24/2010 ND<0.32 FALSE MW-10 2/23/2011 ND<0.32 FALSE MW-10 8/24/2011 ND<0.2 FALSE MW-10 2/21/2012 ND<0.2 FALSE MW-10 8/28/2012 ND<0.17 FALSE MW-10 2/19/2013 ND<0.17 FALSE MW-10 8/28/2013 0.43 FALSE MW-10 2/24/2014 1.2 FALSE MW-10 8/5/2014 0.52 FALSE MW-10 2/10/2015 ND<0.16 FALSE MW-10 8/25/2015 ND<0.22 FALSE MW-10 2/25/2016 ND<0.54 FALSE MW-10 8/10/2016 ND<0.54 FALSE MW-10 2/16/2017 ND<0.54 FALSE MW-10 8/16/2017 ND<0.51 FALSE MW-10 2/19/2018 ND<0.51 FALSE MW-10 8/14/2018 ND<0.15 FALSE MW-11 2/18/2008 ND<0.14 FALSE DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 5 MW-11 8/20/2009 0.2 FALSE MW-11 8/24/2010 ND<0.32 FALSE MW-11 2/23/2011 ND<0.32 FALSE MW-11 8/24/2011 ND<0.2 FALSE MW-11 2/21/2012 ND<0.2 FALSE MW-11 8/28/2012 ND<0.17 FALSE MW-11 2/19/2013 ND<0.17 FALSE MW-11 8/28/2013 ND<0.06 FALSE MW-11 2/24/2014 0.54 FALSE MW-11 8/5/2014 0.55 FALSE MW-11 2/10/2015 0.4 FALSE MW-11 8/25/2015 ND<0.22 FALSE MW-11 2/25/2016 ND<0.54 FALSE MW-11 8/10/2016 ND<0.54 FALSE MW-11 2/16/2017 ND<0.54 FALSE MW-11 8/16/2017 ND<0.51 FALSE MW-11 2/19/2018 ND<0.51 FALSE MW-11 8/14/2018 ND<0.15 FALSE MW-12 2/18/2008 3.5 FALSE MW-12 8/20/2009 0.2 FALSE MW-12 8/24/2010 ND<0.32 FALSE MW-12 2/23/2011 ND<0.32 FALSE MW-12 8/24/2011 1.2 FALSE MW-12 2/21/2012 ND<0.2 FALSE MW-12 8/28/2012 ND<0.17 FALSE MW-12 2/19/2013 ND<0.17 FALSE MW-12 8/28/2013 0.07 FALSE MW-12 2/24/2014 0.39 FALSE MW-12 8/5/2014 0.8 FALSE MW-12 2/10/2015 0.22 FALSE MW-12 8/25/2015 ND<0.22 FALSE MW-12 2/25/2016 ND<0.54 FALSE MW-12 8/10/2016 ND<0.54 FALSE MW-12 2/16/2017 ND<0.54 FALSE MW-12 8/16/2017 ND<0.51 FALSE MW-12 2/19/2018 ND<0.51 FALSE MW-12 8/14/2018 0.76 FALSE MW-17 2/18/2008 1.1 FALSE MW-17 8/20/2009 0.2 FALSE MW-17 8/24/2010 ND<0.32 FALSE MW-17 2/23/2011 ND<0.32 FALSE MW-17 8/24/2011 0.76 FALSE MW-17 2/21/2012 ND<0.2 FALSE MW-17 8/28/2012 ND<0.17 FALSE MW-17 2/19/2013 ND<0.17 FALSE MW-17 8/28/2013 ND<0.06 FALSE MW-17 2/24/2014 0.32 FALSE MW-17 8/5/2014 0.55 FALSE MW-17 2/10/2015 0.58 FALSE MW-17 8/25/2015 ND<0.22 FALSE MW-17 2/25/2016 ND<0.54 FALSE MW-17 8/10/2016 ND<0.54 FALSE MW-17 2/16/2017 ND<0.54 FALSE DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 6 MW-17 8/16/2017 ND<0.51 FALSE MW-17 2/19/2018 ND<0.51 FALSE MW-17 8/14/2018 ND<0.15 FALSE DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 7 Sen's Slope Analysis Parameter: Selenium Location: MW-10 Original Data (Not Transformed) Non-Detects Replaced with Detection Limit 90% Confidence Level Xj Xk (Xj - Xk)/(j-k)Q ND<0.12 (8/20/2009)5 (2/18/2008)(0.12 - 5)/(2 - 1)-4.88 ND<0.32 (8/24/2010)5 (2/18/2008)(0.32 - 5)/(3 - 1)-2.34 ND<0.32 (2/23/2011)5 (2/18/2008)(0.32 - 5)/(4 - 1)-1.56 ND<0.2 (8/24/2011)5 (2/18/2008)(0.2 - 5)/(5 - 1)-1.2 ND<0.2 (2/21/2012)5 (2/18/2008)(0.2 - 5)/(6 - 1)-0.96 ND<0.17 (8/28/2012)5 (2/18/2008)(0.17 - 5)/(7 - 1)-0.805 ND<0.17 (2/19/2013)5 (2/18/2008)(0.17 - 5)/(8 - 1)-0.69 0.43 (8/28/2013)5 (2/18/2008)(0.43 - 5)/(9 - 1)-0.57125 1.2 (2/24/2014)5 (2/18/2008)(1.2 - 5)/(10 - 1)-0.422222 0.52 (8/5/2014)5 (2/18/2008)(0.52 - 5)/(11 - 1)-0.448 ND<0.16 (2/10/2015)5 (2/18/2008)(0.16 - 5)/(12 - 1)-0.44 ND<0.22 (8/25/2015)5 (2/18/2008)(0.22 - 5)/(13 - 1)-0.398333 ND<0.54 (2/25/2016)5 (2/18/2008)(0.54 - 5)/(14 - 1)-0.343077 ND<0.54 (8/10/2016)5 (2/18/2008)(0.54 - 5)/(15 - 1)-0.318571 ND<0.54 (2/16/2017)5 (2/18/2008)(0.54 - 5)/(16 - 1)-0.297333 ND<0.51 (8/16/2017)5 (2/18/2008)(0.51 - 5)/(17 - 1)-0.280625 ND<0.51 (2/19/2018)5 (2/18/2008)(0.51 - 5)/(18 - 1)-0.264118 ND<0.15 (8/14/2018)5 (2/18/2008)(0.15 - 5)/(19 - 1)-0.269444 ND<0.32 (8/24/2010)ND<0.12 (8/20/2009)(0.32 - 0.12)/(3 - 2)0.2 ND<0.32 (2/23/2011)ND<0.12 (8/20/2009)(0.32 - 0.12)/(4 - 2)0.1 ND<0.2 (8/24/2011)ND<0.12 (8/20/2009)(0.2 - 0.12)/(5 - 2)0.0266667 ND<0.2 (2/21/2012)ND<0.12 (8/20/2009)(0.2 - 0.12)/(6 - 2)0.02 ND<0.17 (8/28/2012)ND<0.12 (8/20/2009)(0.17 - 0.12)/(7 - 2)0.01 ND<0.17 (2/19/2013)ND<0.12 (8/20/2009)(0.17 - 0.12)/(8 - 2)0.00833333 0.43 (8/28/2013)ND<0.12 (8/20/2009)(0.43 - 0.12)/(9 - 2)0.0442857 1.2 (2/24/2014)ND<0.12 (8/20/2009)(1.2 - 0.12)/(10 - 2)0.135 0.52 (8/5/2014)ND<0.12 (8/20/2009)(0.52 - 0.12)/(11 - 2)0.0444444 ND<0.16 (2/10/2015)ND<0.12 (8/20/2009)(0.16 - 0.12)/(12 - 2)0.004 ND<0.22 (8/25/2015)ND<0.12 (8/20/2009)(0.22 - 0.12)/(13 - 2)0.00909091 ND<0.54 (2/25/2016)ND<0.12 (8/20/2009)(0.54 - 0.12)/(14 - 2)0.035 ND<0.54 (8/10/2016)ND<0.12 (8/20/2009)(0.54 - 0.12)/(15 - 2)0.0323077 ND<0.54 (2/16/2017)ND<0.12 (8/20/2009)(0.54 - 0.12)/(16 - 2)0.03 ND<0.51 (8/16/2017)ND<0.12 (8/20/2009)(0.51 - 0.12)/(17 - 2)0.026 ND<0.51 (2/19/2018)ND<0.12 (8/20/2009)(0.51 - 0.12)/(18 - 2)0.024375 ND<0.15 (8/14/2018)ND<0.12 (8/20/2009)(0.15 - 0.12)/(19 - 2)0.00176471 ND<0.32 (2/23/2011)ND<0.32 (8/24/2010)(0.32 - 0.32)/(4 - 3)0 ND<0.2 (8/24/2011)ND<0.32 (8/24/2010)(0.2 - 0.32)/(5 - 3)-0.06 ND<0.2 (2/21/2012)ND<0.32 (8/24/2010)(0.2 - 0.32)/(6 - 3)-0.04 ND<0.17 (8/28/2012)ND<0.32 (8/24/2010)(0.17 - 0.32)/(7 - 3)-0.0375 ND<0.17 (2/19/2013)ND<0.32 (8/24/2010)(0.17 - 0.32)/(8 - 3)-0.03 0.43 (8/28/2013)ND<0.32 (8/24/2010)(0.43 - 0.32)/(9 - 3)0.0183333 1.2 (2/24/2014)ND<0.32 (8/24/2010)(1.2 - 0.32)/(10 - 3)0.125714 0.52 (8/5/2014)ND<0.32 (8/24/2010)(0.52 - 0.32)/(11 - 3)0.025 ND<0.16 (2/10/2015)ND<0.32 (8/24/2010)(0.16 - 0.32)/(12 - 3)-0.0177778 ND<0.22 (8/25/2015)ND<0.32 (8/24/2010)(0.22 - 0.32)/(13 - 3)-0.01 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 8 ND<0.54 (2/25/2016)ND<0.32 (8/24/2010)(0.54 - 0.32)/(14 - 3)0.02 ND<0.54 (8/10/2016)ND<0.32 (8/24/2010)(0.54 - 0.32)/(15 - 3)0.0183333 ND<0.54 (2/16/2017)ND<0.32 (8/24/2010)(0.54 - 0.32)/(16 - 3)0.0169231 ND<0.51 (8/16/2017)ND<0.32 (8/24/2010)(0.51 - 0.32)/(17 - 3)0.0135714 ND<0.51 (2/19/2018)ND<0.32 (8/24/2010)(0.51 - 0.32)/(18 - 3)0.0126667 ND<0.15 (8/14/2018)ND<0.32 (8/24/2010)(0.15 - 0.32)/(19 - 3)-0.010625 ND<0.2 (8/24/2011)ND<0.32 (2/23/2011)(0.2 - 0.32)/(5 - 4)-0.12 ND<0.2 (2/21/2012)ND<0.32 (2/23/2011)(0.2 - 0.32)/(6 - 4)-0.06 ND<0.17 (8/28/2012)ND<0.32 (2/23/2011)(0.17 - 0.32)/(7 - 4)-0.05 ND<0.17 (2/19/2013)ND<0.32 (2/23/2011)(0.17 - 0.32)/(8 - 4)-0.0375 0.43 (8/28/2013)ND<0.32 (2/23/2011)(0.43 - 0.32)/(9 - 4)0.022 1.2 (2/24/2014)ND<0.32 (2/23/2011)(1.2 - 0.32)/(10 - 4)0.146667 0.52 (8/5/2014)ND<0.32 (2/23/2011)(0.52 - 0.32)/(11 - 4)0.0285714 ND<0.16 (2/10/2015)ND<0.32 (2/23/2011)(0.16 - 0.32)/(12 - 4)-0.02 ND<0.22 (8/25/2015)ND<0.32 (2/23/2011)(0.22 - 0.32)/(13 - 4)-0.0111111 ND<0.54 (2/25/2016)ND<0.32 (2/23/2011)(0.54 - 0.32)/(14 - 4)0.022 ND<0.54 (8/10/2016)ND<0.32 (2/23/2011)(0.54 - 0.32)/(15 - 4)0.02 ND<0.54 (2/16/2017)ND<0.32 (2/23/2011)(0.54 - 0.32)/(16 - 4)0.0183333 ND<0.51 (8/16/2017)ND<0.32 (2/23/2011)(0.51 - 0.32)/(17 - 4)0.0146154 ND<0.51 (2/19/2018)ND<0.32 (2/23/2011)(0.51 - 0.32)/(18 - 4)0.0135714 ND<0.15 (8/14/2018)ND<0.32 (2/23/2011)(0.15 - 0.32)/(19 - 4)-0.0113333 ND<0.2 (2/21/2012)ND<0.2 (8/24/2011)(0.2 - 0.2)/(6 - 5)0 ND<0.17 (8/28/2012)ND<0.2 (8/24/2011)(0.17 - 0.2)/(7 - 5)-0.015 ND<0.17 (2/19/2013)ND<0.2 (8/24/2011)(0.17 - 0.2)/(8 - 5)-0.01 0.43 (8/28/2013)ND<0.2 (8/24/2011)(0.43 - 0.2)/(9 - 5)0.0575 1.2 (2/24/2014)ND<0.2 (8/24/2011)(1.2 - 0.2)/(10 - 5)0.2 0.52 (8/5/2014)ND<0.2 (8/24/2011)(0.52 - 0.2)/(11 - 5)0.0533333 ND<0.16 (2/10/2015)ND<0.2 (8/24/2011)(0.16 - 0.2)/(12 - 5)-0.00571429 ND<0.22 (8/25/2015)ND<0.2 (8/24/2011)(0.22 - 0.2)/(13 - 5)0.0025 ND<0.54 (2/25/2016)ND<0.2 (8/24/2011)(0.54 - 0.2)/(14 - 5)0.0377778 ND<0.54 (8/10/2016)ND<0.2 (8/24/2011)(0.54 - 0.2)/(15 - 5)0.034 ND<0.54 (2/16/2017)ND<0.2 (8/24/2011)(0.54 - 0.2)/(16 - 5)0.0309091 ND<0.51 (8/16/2017)ND<0.2 (8/24/2011)(0.51 - 0.2)/(17 - 5)0.0258333 ND<0.51 (2/19/2018)ND<0.2 (8/24/2011)(0.51 - 0.2)/(18 - 5)0.0238462 ND<0.15 (8/14/2018)ND<0.2 (8/24/2011)(0.15 - 0.2)/(19 - 5)-0.00357143 ND<0.17 (8/28/2012)ND<0.2 (2/21/2012)(0.17 - 0.2)/(7 - 6)-0.03 ND<0.17 (2/19/2013)ND<0.2 (2/21/2012)(0.17 - 0.2)/(8 - 6)-0.015 0.43 (8/28/2013)ND<0.2 (2/21/2012)(0.43 - 0.2)/(9 - 6)0.0766667 1.2 (2/24/2014)ND<0.2 (2/21/2012)(1.2 - 0.2)/(10 - 6)0.25 0.52 (8/5/2014)ND<0.2 (2/21/2012)(0.52 - 0.2)/(11 - 6)0.064 ND<0.16 (2/10/2015)ND<0.2 (2/21/2012)(0.16 - 0.2)/(12 - 6)-0.00666667 ND<0.22 (8/25/2015)ND<0.2 (2/21/2012)(0.22 - 0.2)/(13 - 6)0.00285714 ND<0.54 (2/25/2016)ND<0.2 (2/21/2012)(0.54 - 0.2)/(14 - 6)0.0425 ND<0.54 (8/10/2016)ND<0.2 (2/21/2012)(0.54 - 0.2)/(15 - 6)0.0377778 ND<0.54 (2/16/2017)ND<0.2 (2/21/2012)(0.54 - 0.2)/(16 - 6)0.034 ND<0.51 (8/16/2017)ND<0.2 (2/21/2012)(0.51 - 0.2)/(17 - 6)0.0281818 ND<0.51 (2/19/2018)ND<0.2 (2/21/2012)(0.51 - 0.2)/(18 - 6)0.0258333 ND<0.15 (8/14/2018)ND<0.2 (2/21/2012)(0.15 - 0.2)/(19 - 6)-0.00384615 ND<0.17 (2/19/2013)ND<0.17 (8/28/2012)(0.17 - 0.17)/(8 - 7)0 0.43 (8/28/2013)ND<0.17 (8/28/2012)(0.43 - 0.17)/(9 - 7)0.13 1.2 (2/24/2014)ND<0.17 (8/28/2012)(1.2 - 0.17)/(10 - 7)0.343333 0.52 (8/5/2014)ND<0.17 (8/28/2012)(0.52 - 0.17)/(11 - 7)0.0875 ND<0.16 (2/10/2015)ND<0.17 (8/28/2012)(0.16 - 0.17)/(12 - 7)-0.002 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 9 ND<0.22 (8/25/2015)ND<0.17 (8/28/2012)(0.22 - 0.17)/(13 - 7)0.00833333 ND<0.54 (2/25/2016)ND<0.17 (8/28/2012)(0.54 - 0.17)/(14 - 7)0.0528571 ND<0.54 (8/10/2016)ND<0.17 (8/28/2012)(0.54 - 0.17)/(15 - 7)0.04625 ND<0.54 (2/16/2017)ND<0.17 (8/28/2012)(0.54 - 0.17)/(16 - 7)0.0411111 ND<0.51 (8/16/2017)ND<0.17 (8/28/2012)(0.51 - 0.17)/(17 - 7)0.034 ND<0.51 (2/19/2018)ND<0.17 (8/28/2012)(0.51 - 0.17)/(18 - 7)0.0309091 ND<0.15 (8/14/2018)ND<0.17 (8/28/2012)(0.15 - 0.17)/(19 - 7)-0.00166667 0.43 (8/28/2013)ND<0.17 (2/19/2013)(0.43 - 0.17)/(9 - 8)0.26 1.2 (2/24/2014)ND<0.17 (2/19/2013)(1.2 - 0.17)/(10 - 8)0.515 0.52 (8/5/2014)ND<0.17 (2/19/2013)(0.52 - 0.17)/(11 - 8)0.116667 ND<0.16 (2/10/2015)ND<0.17 (2/19/2013)(0.16 - 0.17)/(12 - 8)-0.0025 ND<0.22 (8/25/2015)ND<0.17 (2/19/2013)(0.22 - 0.17)/(13 - 8)0.01 ND<0.54 (2/25/2016)ND<0.17 (2/19/2013)(0.54 - 0.17)/(14 - 8)0.0616667 ND<0.54 (8/10/2016)ND<0.17 (2/19/2013)(0.54 - 0.17)/(15 - 8)0.0528571 ND<0.54 (2/16/2017)ND<0.17 (2/19/2013)(0.54 - 0.17)/(16 - 8)0.04625 ND<0.51 (8/16/2017)ND<0.17 (2/19/2013)(0.51 - 0.17)/(17 - 8)0.0377778 ND<0.51 (2/19/2018)ND<0.17 (2/19/2013)(0.51 - 0.17)/(18 - 8)0.034 ND<0.15 (8/14/2018)ND<0.17 (2/19/2013)(0.15 - 0.17)/(19 - 8)-0.00181818 1.2 (2/24/2014)0.43 (8/28/2013)(1.2 - 0.43)/(10 - 9)0.77 0.52 (8/5/2014)0.43 (8/28/2013)(0.52 - 0.43)/(11 - 9)0.045 ND<0.16 (2/10/2015)0.43 (8/28/2013)(0.16 - 0.43)/(12 - 9)-0.09 ND<0.22 (8/25/2015)0.43 (8/28/2013)(0.22 - 0.43)/(13 - 9)-0.0525 ND<0.54 (2/25/2016)0.43 (8/28/2013)(0.54 - 0.43)/(14 - 9)0.022 ND<0.54 (8/10/2016)0.43 (8/28/2013)(0.54 - 0.43)/(15 - 9)0.0183333 ND<0.54 (2/16/2017)0.43 (8/28/2013)(0.54 - 0.43)/(16 - 9)0.0157143 ND<0.51 (8/16/2017)0.43 (8/28/2013)(0.51 - 0.43)/(17 - 9)0.01 ND<0.51 (2/19/2018)0.43 (8/28/2013)(0.51 - 0.43)/(18 - 9)0.00888889 ND<0.15 (8/14/2018)0.43 (8/28/2013)(0.15 - 0.43)/(19 - 9)-0.028 0.52 (8/5/2014)1.2 (2/24/2014)(0.52 - 1.2)/(11 - 10)-0.68 ND<0.16 (2/10/2015)1.2 (2/24/2014)(0.16 - 1.2)/(12 - 10)-0.52 ND<0.22 (8/25/2015)1.2 (2/24/2014)(0.22 - 1.2)/(13 - 10)-0.326667 ND<0.54 (2/25/2016)1.2 (2/24/2014)(0.54 - 1.2)/(14 - 10)-0.165 ND<0.54 (8/10/2016)1.2 (2/24/2014)(0.54 - 1.2)/(15 - 10)-0.132 ND<0.54 (2/16/2017)1.2 (2/24/2014)(0.54 - 1.2)/(16 - 10)-0.11 ND<0.51 (8/16/2017)1.2 (2/24/2014)(0.51 - 1.2)/(17 - 10)-0.0985714 ND<0.51 (2/19/2018)1.2 (2/24/2014)(0.51 - 1.2)/(18 - 10)-0.08625 ND<0.15 (8/14/2018)1.2 (2/24/2014)(0.15 - 1.2)/(19 - 10)-0.116667 ND<0.16 (2/10/2015)0.52 (8/5/2014)(0.16 - 0.52)/(12 - 11)-0.36 ND<0.22 (8/25/2015)0.52 (8/5/2014)(0.22 - 0.52)/(13 - 11)-0.15 ND<0.54 (2/25/2016)0.52 (8/5/2014)(0.54 - 0.52)/(14 - 11)0.00666667 ND<0.54 (8/10/2016)0.52 (8/5/2014)(0.54 - 0.52)/(15 - 11)0.005 ND<0.54 (2/16/2017)0.52 (8/5/2014)(0.54 - 0.52)/(16 - 11)0.004 ND<0.51 (8/16/2017)0.52 (8/5/2014)(0.51 - 0.52)/(17 - 11)-0.00166667 ND<0.51 (2/19/2018)0.52 (8/5/2014)(0.51 - 0.52)/(18 - 11)-0.00142857 ND<0.15 (8/14/2018)0.52 (8/5/2014)(0.15 - 0.52)/(19 - 11)-0.04625 ND<0.22 (8/25/2015)ND<0.16 (2/10/2015)(0.22 - 0.16)/(13 - 12)0.06 ND<0.54 (2/25/2016)ND<0.16 (2/10/2015)(0.54 - 0.16)/(14 - 12)0.19 ND<0.54 (8/10/2016)ND<0.16 (2/10/2015)(0.54 - 0.16)/(15 - 12)0.126667 ND<0.54 (2/16/2017)ND<0.16 (2/10/2015)(0.54 - 0.16)/(16 - 12)0.095 ND<0.51 (8/16/2017)ND<0.16 (2/10/2015)(0.51 - 0.16)/(17 - 12)0.07 ND<0.51 (2/19/2018)ND<0.16 (2/10/2015)(0.51 - 0.16)/(18 - 12)0.0583333 ND<0.15 (8/14/2018)ND<0.16 (2/10/2015)(0.15 - 0.16)/(19 - 12)-0.00142857 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 10 ND<0.54 (2/25/2016)ND<0.22 (8/25/2015)(0.54 - 0.22)/(14 - 13)0.32 ND<0.54 (8/10/2016)ND<0.22 (8/25/2015)(0.54 - 0.22)/(15 - 13)0.16 ND<0.54 (2/16/2017)ND<0.22 (8/25/2015)(0.54 - 0.22)/(16 - 13)0.106667 ND<0.51 (8/16/2017)ND<0.22 (8/25/2015)(0.51 - 0.22)/(17 - 13)0.0725 ND<0.51 (2/19/2018)ND<0.22 (8/25/2015)(0.51 - 0.22)/(18 - 13)0.058 ND<0.15 (8/14/2018)ND<0.22 (8/25/2015)(0.15 - 0.22)/(19 - 13)-0.0116667 ND<0.54 (8/10/2016)ND<0.54 (2/25/2016)(0.54 - 0.54)/(15 - 14)0 ND<0.54 (2/16/2017)ND<0.54 (2/25/2016)(0.54 - 0.54)/(16 - 14)0 ND<0.51 (8/16/2017)ND<0.54 (2/25/2016)(0.51 - 0.54)/(17 - 14)-0.01 ND<0.51 (2/19/2018)ND<0.54 (2/25/2016)(0.51 - 0.54)/(18 - 14)-0.0075 ND<0.15 (8/14/2018)ND<0.54 (2/25/2016)(0.15 - 0.54)/(19 - 14)-0.078 ND<0.54 (2/16/2017)ND<0.54 (8/10/2016)(0.54 - 0.54)/(16 - 15)0 ND<0.51 (8/16/2017)ND<0.54 (8/10/2016)(0.51 - 0.54)/(17 - 15)-0.015 ND<0.51 (2/19/2018)ND<0.54 (8/10/2016)(0.51 - 0.54)/(18 - 15)-0.01 ND<0.15 (8/14/2018)ND<0.54 (8/10/2016)(0.15 - 0.54)/(19 - 15)-0.0975 ND<0.51 (8/16/2017)ND<0.54 (2/16/2017)(0.51 - 0.54)/(17 - 16)-0.03 ND<0.51 (2/19/2018)ND<0.54 (2/16/2017)(0.51 - 0.54)/(18 - 16)-0.015 ND<0.15 (8/14/2018)ND<0.54 (2/16/2017)(0.15 - 0.54)/(19 - 16)-0.13 ND<0.51 (2/19/2018)ND<0.51 (8/16/2017)(0.51 - 0.51)/(18 - 17)0 ND<0.15 (8/14/2018)ND<0.51 (8/16/2017)(0.15 - 0.51)/(19 - 17)-0.18 ND<0.15 (8/14/2018)ND<0.51 (2/19/2018)(0.15 - 0.51)/(19 - 18)-0.36 Number of Q values = 171 Ordered Q Values n Q 1 -4.88 2 -2.34 3 -1.56 4 -1.2 5 -0.96 6 -0.805 7 -0.69 8 -0.68 9 -0.57125 10 -0.52 11 -0.448 12 -0.44 13 -0.422222 14 -0.398333 15 -0.36 16 -0.36 17 -0.343077 18 -0.326667 19 -0.318571 20 -0.297333 21 -0.280625 22 -0.269444 23 -0.264118 24 -0.18 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 11 25 -0.165 26 -0.15 27 -0.132 28 -0.13 29 -0.12 30 -0.116667 31 -0.11 32 -0.0985714 33 -0.0975 34 -0.09 35 -0.08625 36 -0.078 37 -0.06 38 -0.06 39 -0.0525 40 -0.05 41 -0.04625 42 -0.04 43 -0.0375 44 -0.0375 45 -0.03 46 -0.03 47 -0.03 48 -0.028 49 -0.02 50 -0.0177778 51 -0.015 52 -0.015 53 -0.015 54 -0.015 55 -0.0116667 56 -0.0113333 57 -0.0111111 58 -0.010625 59 -0.01 60 -0.01 61 -0.01 62 -0.01 63 -0.0075 64 -0.00666667 65 -0.00571429 66 -0.00384615 67 -0.00357143 68 -0.0025 69 -0.002 70 -0.00181818 71 -0.00166667 72 -0.00166667 73 -0.00142857 74 -0.00142857 75 0 76 0 77 0 78 0 79 0 80 0 81 0 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 12 82 0.00176471 83 0.0025 84 0.00285714 85 0.004 86 0.004 87 0.005 88 0.00666667 89 0.00833333 90 0.00833333 91 0.00888889 92 0.00909091 93 0.01 94 0.01 95 0.01 96 0.0126667 97 0.0135714 98 0.0135714 99 0.0146154 100 0.0157143 101 0.0169231 102 0.0183333 103 0.0183333 104 0.0183333 105 0.0183333 106 0.02 107 0.02 108 0.02 109 0.022 110 0.022 111 0.022 112 0.0238462 113 0.024375 114 0.025 115 0.0258333 116 0.0258333 117 0.026 118 0.0266667 119 0.0281818 120 0.0285714 121 0.03 122 0.0309091 123 0.0309091 124 0.0323077 125 0.034 126 0.034 127 0.034 128 0.034 129 0.035 130 0.0377778 131 0.0377778 132 0.0377778 133 0.0411111 134 0.0425 135 0.0442857 136 0.0444444 137 0.045 138 0.04625 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 13 139 0.04625 140 0.0528571 141 0.0528571 142 0.0533333 143 0.0575 144 0.058 145 0.0583333 146 0.06 147 0.0616667 148 0.064 149 0.07 150 0.0725 151 0.0766667 152 0.0875 153 0.095 154 0.1 155 0.106667 156 0.116667 157 0.125714 158 0.126667 159 0.13 160 0.135 161 0.146667 162 0.16 163 0.19 164 0.2 165 0.2 166 0.25 167 0.26 168 0.32 169 0.343333 170 0.515 171 0.77 Sen's Estimator (Median Q) is 0.004 Tied Group Value Members 1 0.32 2 2 0.2 2 3 0.17 2 4 0.54 3 5 0.51 2 Time Period Observations 2/18/2008 1 8/20/2009 1 8/24/2010 1 2/23/2011 1 8/24/2011 1 2/21/2012 1 8/28/2012 1 2/19/2013 1 8/28/2013 1 2/24/2014 1 8/5/2014 1 2/10/2015 1 8/25/2015 1 2/25/2016 1 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 14 8/10/2016 1 2/16/2017 1 8/16/2017 1 2/19/2018 1 8/14/2018 1 There are 0 time periods with multiple data A = 138 B = 0 C = 6 D = 0 E = 14 F = 0 a = 14706 b = 52326 c = 684 Group Variance = 809.333 For 90% confidence interval (two-tailed), Z at (1-0.9)/2 = 1.64485 C = 46.7941 M1 = (171 - 46.7941)/2.0 = 62.103 M2 = (171 + 46.7941)/2.0 + 1 = 109.897 Lower limit is -0.01 = Q(62) Upper limit is 0.022 = Q(110) -0.01 < 0 < 0.022 indicating no trend in data. DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 15 Selenium Multi-Well Time-Series Graph Sample DateConcentration (ppb)0 1 2 3 4 5 MW- 8 MW- 9 MW-10 MW-11 MW-12 MW-172/18/20088/18/20092/16/20118/16/20122/14/20148/15/20152/12/20178/14/2018DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 1 Concentrations (ppb) Parameter: Sulfate Original Data (Not Transformed) Non-Detects Replaced with Detection Limit Total Measurements: 114 Total Non-Detect: 51 Percent Non-Detects: 44.7368% Total Background Measurements: 19 There is 1 background location Loc.Meas.ND Date Conc.Original MW- 8 19 3 (15.7895%)2/18/2008 9600 9600 8/20/2009 ND<5000 ND<5000 8/24/2010 13100 13100 2/23/2011 17600 17600 8/24/2011 ND<5000 ND<5000 2/21/2012 ND<5000 ND<5000 8/28/2012 17500 17500 2/19/2013 10200 10200 8/28/2013 11500 11500 2/24/2014 24600 24600 8/5/2014 14800 14800 2/10/2015 18500 18500 8/25/2015 6400 6400 2/25/2016 17000 17000 8/10/2016 12600 12600 2/16/2017 6300 6300 8/16/2017 7600 7600 2/19/2018 8600 8600 8/14/2018 13200 13200 There are 5 compliance locations Loc.Meas.ND Date Conc.Original MW- 9 19 10 (52.6316%)2/18/2008 ND<5000 ND<5000 8/20/2009 20700 20700 8/24/2010 ND<5000 ND<5000 2/23/2011 ND<5000 ND<5000 8/24/2011 24300 24300 2/21/2012 ND<5000 ND<5000 8/28/2012 20800 20800 2/19/2013 14100 14100 8/28/2013 5300 5300 2/24/2014 39200 39200 8/5/2014 ND<5000 ND<5000 2/10/2015 10400 10400 8/25/2015 5700 5700 2/25/2016 6400 6400 8/10/2016 ND<5000 ND<5000 2/16/2017 ND<5000 ND<5000 8/16/2017 ND<1040 ND<1040 2/19/2018 ND<1040 ND<1040 8/14/2018 ND<5000 ND<5000 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 2 MW-10 19 8 (42.1053%)2/18/2008 ND<5000 ND<5000 8/20/2009 10200 10200 8/24/2010 ND<5000 ND<5000 2/23/2011 ND<5000 ND<5000 8/24/2011 14100 14100 2/21/2012 ND<5000 ND<5000 8/28/2012 19300 19300 2/19/2013 13800 13800 8/28/2013 ND<5000 ND<5000 2/24/2014 24200 24200 8/5/2014 16500 16500 2/10/2015 19700 19700 8/25/2015 7100 7100 2/25/2016 7100 7100 8/10/2016 5200 5200 2/16/2017 ND<5000 ND<5000 8/16/2017 ND<1040 ND<1040 2/19/2018 ND<1040 ND<1040 8/14/2018 6700 6700 MW-11 19 10 (52.6316%)2/18/2008 ND<5000 ND<5000 8/20/2009 10600 10600 8/24/2010 ND<5000 ND<5000 2/23/2011 ND<5000 ND<5000 8/24/2011 ND<5000 ND<5000 2/21/2012 ND<5000 ND<5000 8/28/2012 ND<5000 ND<5000 2/19/2013 14600 14600 8/28/2013 ND<5000 ND<5000 2/24/2014 10300 10300 8/5/2014 11400 11400 2/10/2015 13100 13100 8/25/2015 6000 6000 2/25/2016 6600 6600 8/10/2016 ND<5000 ND<5000 2/16/2017 ND<5000 ND<5000 8/16/2017 6100 6100 2/19/2018 ND<1040 ND<1040 8/14/2018 5800 5800 MW-12 19 10 (52.6316%)2/18/2008 ND<5000 ND<5000 8/20/2009 10400 10400 8/24/2010 ND<5000 ND<5000 2/23/2011 ND<5000 ND<5000 8/24/2011 7400 7400 2/21/2012 11500 11500 8/28/2012 7800 7800 2/19/2013 10400 10400 8/28/2013 ND<5000 ND<5000 2/24/2014 ND<5000 ND<5000 8/5/2014 12900 12900 2/10/2015 11200 11200 8/25/2015 7000 7000 2/25/2016 6200 6200 8/10/2016 ND<5000 ND<5000 2/16/2017 ND<5000 ND<5000 8/16/2017 ND<1040 ND<1040 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 3 2/19/2018 ND<1040 ND<1040 8/14/2018 ND<5000 ND<5000 MW-17 19 10 (52.6316%)2/18/2008 ND<5000 ND<5000 8/20/2009 11900 11900 8/24/2010 ND<5000 ND<5000 2/23/2011 12600 12600 8/24/2011 ND<5000 ND<5000 2/21/2012 5700 5700 8/28/2012 8000 8000 2/19/2013 ND<5000 ND<5000 8/28/2013 5300 5300 2/24/2014 ND<5000 ND<5000 8/5/2014 ND<5000 ND<5000 2/10/2015 11000 11000 8/25/2015 5000 5000 2/25/2016 6500 6500 8/10/2016 ND<5000 ND<5000 2/16/2017 ND<5000 ND<5000 8/16/2017 7000 7000 2/19/2018 ND<1040 ND<1040 8/14/2018 ND<5000 ND<5000 There are 0 unused locations Loc.Meas.ND Date Conc.Original DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 4 Levene's Test for Equal of Variance Parameter: Sulfate Natural Logarithm Transformation Non-Detects Replaced with Detection Limit Overall Mean = 0.478379 Overall Std Dev = 0.486251 Overall Total = 54.5353 SS Groups = 2.14022 SS Total = 26.7178 ANOVA Table Source of Sum of Degrees of Mean Variation Squares Freedom Squares F Between Groups 2.14022 5 0.428043 1.88093 Error (within groups)24.5775 108 0.22757 Totals 26.7178 113 1.88093 does not exceed 2.28985 indicating equal variance Group: MW- 8 Sample Residual 2/18/2008 0.0959502 8/20/2009 0.748275 8/24/2010 0.214899 2/23/2011 0.510186 8/24/2011 0.748275 2/21/2012 0.748275 8/28/2012 0.504488 2/19/2013 0.0353256 8/28/2013 0.0846337 2/24/2014 0.845033 8/5/2014 0.336914 2/10/2015 0.560057 8/25/2015 0.501415 2/25/2016 0.4755 8/10/2016 0.175983 2/16/2017 0.517164 8/16/2017 0.329565 2/19/2018 0.205951 8/14/2018 0.222504 Group: MW- 9 Date Residual 2/18/2008 0.292175 8/20/2009 1.12852 8/24/2010 0.292175 2/23/2011 0.292175 8/24/2011 1.28886 2/21/2012 0.292175 8/28/2012 1.13334 2/19/2013 0.744562 8/28/2013 0.233906 2/24/2014 1.76706 8/5/2014 0.292175 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 5 2/10/2015 0.440193 8/25/2015 0.161146 2/25/2016 0.0453144 8/10/2016 0.292175 2/16/2017 0.292175 8/16/2017 1.86239 2/19/2018 1.86239 8/14/2018 0.292175 Group: MW-10 Date Residual 2/18/2008 0.323704 8/20/2009 0.389246 8/24/2010 0.323704 2/23/2011 0.323704 8/24/2011 0.713033 2/21/2012 0.323704 8/28/2012 1.02696 2/19/2013 0.691527 8/28/2013 0.323704 2/24/2014 1.25321 8/5/2014 0.870219 2/10/2015 1.04748 8/25/2015 0.0269531 2/25/2016 0.0269531 8/10/2016 0.284483 2/16/2017 0.323704 8/16/2017 1.89392 2/19/2018 1.89392 8/14/2018 0.0310342 Group: MW-11 Date Residual 2/18/2008 0.187898 8/20/2009 0.563518 8/24/2010 0.187898 2/23/2011 0.187898 8/24/2011 0.187898 2/21/2012 0.187898 8/28/2012 0.187898 2/19/2013 0.883686 8/28/2013 0.187898 2/24/2014 0.534808 8/5/2014 0.636277 2/10/2015 0.775276 8/25/2015 0.00557646 2/25/2016 0.0897337 8/10/2016 0.187898 2/16/2017 0.187898 8/16/2017 0.0109528 2/19/2018 1.75812 8/14/2018 0.039478 Group: MW-12 Date Residual 2/18/2008 0.121041 8/20/2009 0.611326 8/24/2010 0.121041 2/23/2011 0.121041 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 6 8/24/2011 0.271001 2/21/2012 0.711868 8/28/2012 0.323644 2/19/2013 0.611326 8/28/2013 0.121041 2/24/2014 0.121041 8/5/2014 0.826748 2/10/2015 0.685434 8/25/2015 0.215431 2/25/2016 0.0940699 8/10/2016 0.121041 2/16/2017 0.121041 8/16/2017 1.69126 2/19/2018 1.69126 8/14/2018 0.121041 Group: MW-17 Date Residual 2/18/2008 0.119355 8/20/2009 0.747746 8/24/2010 0.119355 2/23/2011 0.804904 8/24/2011 0.119355 2/21/2012 0.0116737 8/28/2012 0.350649 2/19/2013 0.119355 8/28/2013 0.0610857 2/24/2014 0.119355 8/5/2014 0.119355 2/10/2015 0.669103 8/25/2015 0.119355 2/25/2016 0.14301 8/10/2016 0.119355 2/16/2017 0.119355 8/16/2017 0.217118 2/19/2018 1.68957 8/14/2018 0.119355 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 7 Kruskal-Wallis Non-Parametric Test Parameter: Sulfate Natural Logarithm Transformation Non-Detects Replaced with Detection Limit Kruskal Wallis Ranks Background Wells Well ID Date Result Rank MW- 8 2/18/2008 9.16952 77 8/20/2009 ND<8.51719 26 8/24/2010 9.48037 94 2/23/2011 9.77565 105 8/24/2011 ND<8.51719 26 2/21/2012 ND<8.51719 26 8/28/2012 9.76996 104 2/19/2013 9.23014 78 8/28/2013 9.3501 88 2/24/2014 10.1105 113 8/5/2014 9.60238 101 2/10/2015 9.82553 106 8/25/2015 8.76405 63 2/25/2016 9.74097 103 8/10/2016 9.44145 91 2/16/2017 8.7483 62 8/16/2017 8.9359 73 2/19/2018 9.05952 76 8/14/2018 9.48797 96 Rank Sum = 1508 Rank Mean = 79.3684 Background Rank Sum = 1508 Background Rank Mean = 79.3684 Compliance Wells Well ID Date Result Rank MW- 9 2/18/2008 ND<8.51719 26 8/20/2009 9.93789 109 8/24/2010 ND<8.51719 26 2/23/2011 ND<8.51719 26 8/24/2011 10.0982 112 2/21/2012 ND<8.51719 26 8/28/2012 9.94271 110 2/19/2013 9.55393 98 8/28/2013 8.57546 54 2/24/2014 10.5764 114 8/5/2014 ND<8.51719 26 2/10/2015 9.24956 81 8/25/2015 8.64822 56 2/25/2016 8.76405 64 8/10/2016 ND<8.51719 26 2/16/2017 ND<8.51719 26 8/16/2017 ND<6.94698 26 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 8 2/19/2018 ND<6.94698 26 8/14/2018 ND<8.51719 26 Rank Sum = 1058 Rank Mean = 55.6842 MW-10 2/18/2008 ND<8.51719 26 8/20/2009 9.23014 79 8/24/2010 ND<8.51719 26 2/23/2011 ND<8.51719 26 8/24/2011 9.55393 99 2/21/2012 ND<8.51719 26 8/28/2012 9.86786 107 2/19/2013 9.53242 97 8/28/2013 ND<8.51719 26 2/24/2014 10.0941 111 8/5/2014 9.71112 102 2/10/2015 9.88837 108 8/25/2015 8.86785 70 2/25/2016 8.86785 71 8/10/2016 8.55641 53 2/16/2017 ND<8.51719 26 8/16/2017 ND<6.94698 26 2/19/2018 ND<6.94698 26 8/14/2018 8.80986 67 Rank Sum = 1172 Rank Mean = 61.6842 MW-11 2/18/2008 ND<8.51719 26 8/20/2009 9.26861 84 8/24/2010 ND<8.51719 26 2/23/2011 ND<8.51719 26 8/24/2011 ND<8.51719 26 2/21/2012 ND<8.51719 26 8/28/2012 ND<8.51719 26 2/19/2013 9.58878 100 8/28/2013 ND<8.51719 26 2/24/2014 9.2399 80 8/5/2014 9.34137 87 2/10/2015 9.48037 95 8/25/2015 8.69951 59 2/25/2016 8.79482 66 8/10/2016 ND<8.51719 26 2/16/2017 ND<8.51719 26 8/16/2017 8.71604 60 2/19/2018 ND<6.94698 26 8/14/2018 8.66561 58 Rank Sum = 949 Rank Mean = 49.9474 MW-12 2/18/2008 ND<8.51719 26 8/20/2009 9.24956 82 8/24/2010 ND<8.51719 26 2/23/2011 ND<8.51719 26 8/24/2011 8.90924 72 2/21/2012 9.3501 89 8/28/2012 8.96188 74 2/19/2013 9.24956 83 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 9 8/28/2013 ND<8.51719 26 2/24/2014 ND<8.51719 26 8/5/2014 9.46498 93 2/10/2015 9.32367 86 8/25/2015 8.85367 68 2/25/2016 8.7323 61 8/10/2016 ND<8.51719 26 2/16/2017 ND<8.51719 26 8/16/2017 ND<6.94698 26 2/19/2018 ND<6.94698 26 8/14/2018 ND<8.51719 26 Rank Sum = 968 Rank Mean = 50.9474 MW-17 2/18/2008 ND<8.51719 26 8/20/2009 9.38429 90 8/24/2010 ND<8.51719 26 2/23/2011 9.44145 92 8/24/2011 ND<8.51719 26 2/21/2012 8.64822 57 8/28/2012 8.9872 75 2/19/2013 ND<8.51719 26 8/28/2013 8.57546 55 2/24/2014 ND<8.51719 26 8/5/2014 ND<8.51719 26 2/10/2015 9.30565 85 8/25/2015 8.51719 52 2/25/2016 8.77956 65 8/10/2016 ND<8.51719 26 2/16/2017 ND<8.51719 26 8/16/2017 8.85367 69 2/19/2018 ND<6.94698 26 8/14/2018 ND<8.51719 26 Rank Sum = 900 Rank Mean = 47.3684 Calculation Results: Kruskal-Wallis H Statistic = 12.2028 Kruskal-Wallis H Statistic (adjusted for tied non-detects) = 13.4024 95% Confidence comparison value is 11.0705 at 5 degrees of freedom 12.2028 > 11.0705 indicating a significant group difference at 5% significance level 13.4024 > 11.0705 indicating a significant group difference at 5% significance level when adjusted for ties Individual Well Comparisons at 1% Significance Level per Comparison 1% Z score is 2.32634 Mean background rank is 79.3684 Well Mean Rank Dif from Bkg Critical Value MW- 9 55.6842 -23.6842 24.9472 MW-10 61.6842 -17.6842 24.9472 MW-11 49.9474 -29.4211 24.9472 MW-12 50.9474 -28.4211 24.9472 MW-17 47.3684 -32 24.9472 Individual Well Comparisons at Groupwise 5% Significance Level DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 10 (1% Significance Level per comparison) 1% Z score is 2.32634 Mean background rank is 79.3684 Well Mean Rank Dif from Bkg Critical Value MW- 9 55.6842 -23.6842 24.9472 MW-10 61.6842 -17.6842 24.9472 MW-11 49.9474 -29.4211 24.9472 MW-12 50.9474 -28.4211 24.9472 MW-17 47.3684 -32 24.9472 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 11 Sen's Slope Analysis Parameter: Sulfate Location: MW- 9 Original Data (Not Transformed) Non-Detects Replaced with Detection Limit 90% Confidence Level Xj Xk (Xj - Xk)/(j-k)Q 20700 (8/20/2009)ND<5000 (2/18/2008)(20700 - 5000)/(2 - 1)15700 ND<5000 (8/24/2010)ND<5000 (2/18/2008)(5000 - 5000)/(3 - 1)0 ND<5000 (2/23/2011)ND<5000 (2/18/2008)(5000 - 5000)/(4 - 1)0 24300 (8/24/2011)ND<5000 (2/18/2008)(24300 - 5000)/(5 - 1)4825 ND<5000 (2/21/2012)ND<5000 (2/18/2008)(5000 - 5000)/(6 - 1)0 20800 (8/28/2012)ND<5000 (2/18/2008)(20800 - 5000)/(7 - 1)2633.33 14100 (2/19/2013)ND<5000 (2/18/2008)(14100 - 5000)/(8 - 1)1300 5300 (8/28/2013)ND<5000 (2/18/2008)(5300 - 5000)/(9 - 1)37.5 39200 (2/24/2014)ND<5000 (2/18/2008)(39200 - 5000)/(10 - 1)3800 ND<5000 (8/5/2014)ND<5000 (2/18/2008)(5000 - 5000)/(11 - 1)0 10400 (2/10/2015)ND<5000 (2/18/2008)(10400 - 5000)/(12 - 1)490.909 5700 (8/25/2015)ND<5000 (2/18/2008)(5700 - 5000)/(13 - 1)58.3333 6400 (2/25/2016)ND<5000 (2/18/2008)(6400 - 5000)/(14 - 1)107.692 ND<5000 (8/10/2016)ND<5000 (2/18/2008)(5000 - 5000)/(15 - 1)0 ND<5000 (2/16/2017)ND<5000 (2/18/2008)(5000 - 5000)/(16 - 1)0 ND<1040 (8/16/2017)ND<5000 (2/18/2008)(1040 - 5000)/(17 - 1)-247.5 ND<1040 (2/19/2018)ND<5000 (2/18/2008)(1040 - 5000)/(18 - 1)-232.941 ND<5000 (8/14/2018)ND<5000 (2/18/2008)(5000 - 5000)/(19 - 1)0 ND<5000 (8/24/2010)20700 (8/20/2009)(5000 - 20700)/(3 - 2)-15700 ND<5000 (2/23/2011)20700 (8/20/2009)(5000 - 20700)/(4 - 2)-7850 24300 (8/24/2011)20700 (8/20/2009)(24300 - 20700)/(5 - 2)1200 ND<5000 (2/21/2012)20700 (8/20/2009)(5000 - 20700)/(6 - 2)-3925 20800 (8/28/2012)20700 (8/20/2009)(20800 - 20700)/(7 - 2)20 14100 (2/19/2013)20700 (8/20/2009)(14100 - 20700)/(8 - 2)-1100 5300 (8/28/2013)20700 (8/20/2009)(5300 - 20700)/(9 - 2)-2200 39200 (2/24/2014)20700 (8/20/2009)(39200 - 20700)/(10 - 2)2312.5 ND<5000 (8/5/2014)20700 (8/20/2009)(5000 - 20700)/(11 - 2)-1744.44 10400 (2/10/2015)20700 (8/20/2009)(10400 - 20700)/(12 - 2)-1030 5700 (8/25/2015)20700 (8/20/2009)(5700 - 20700)/(13 - 2)-1363.64 6400 (2/25/2016)20700 (8/20/2009)(6400 - 20700)/(14 - 2)-1191.67 ND<5000 (8/10/2016)20700 (8/20/2009)(5000 - 20700)/(15 - 2)-1207.69 ND<5000 (2/16/2017)20700 (8/20/2009)(5000 - 20700)/(16 - 2)-1121.43 ND<1040 (8/16/2017)20700 (8/20/2009)(1040 - 20700)/(17 - 2)-1310.67 ND<1040 (2/19/2018)20700 (8/20/2009)(1040 - 20700)/(18 - 2)-1228.75 ND<5000 (8/14/2018)20700 (8/20/2009)(5000 - 20700)/(19 - 2)-923.529 ND<5000 (2/23/2011)ND<5000 (8/24/2010)(5000 - 5000)/(4 - 3)0 24300 (8/24/2011)ND<5000 (8/24/2010)(24300 - 5000)/(5 - 3)9650 ND<5000 (2/21/2012)ND<5000 (8/24/2010)(5000 - 5000)/(6 - 3)0 20800 (8/28/2012)ND<5000 (8/24/2010)(20800 - 5000)/(7 - 3)3950 14100 (2/19/2013)ND<5000 (8/24/2010)(14100 - 5000)/(8 - 3)1820 5300 (8/28/2013)ND<5000 (8/24/2010)(5300 - 5000)/(9 - 3)50 39200 (2/24/2014)ND<5000 (8/24/2010)(39200 - 5000)/(10 - 3)4885.71 ND<5000 (8/5/2014)ND<5000 (8/24/2010)(5000 - 5000)/(11 - 3)0 10400 (2/10/2015)ND<5000 (8/24/2010)(10400 - 5000)/(12 - 3)600 5700 (8/25/2015)ND<5000 (8/24/2010)(5700 - 5000)/(13 - 3)70 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 12 6400 (2/25/2016)ND<5000 (8/24/2010)(6400 - 5000)/(14 - 3)127.273 ND<5000 (8/10/2016)ND<5000 (8/24/2010)(5000 - 5000)/(15 - 3)0 ND<5000 (2/16/2017)ND<5000 (8/24/2010)(5000 - 5000)/(16 - 3)0 ND<1040 (8/16/2017)ND<5000 (8/24/2010)(1040 - 5000)/(17 - 3)-282.857 ND<1040 (2/19/2018)ND<5000 (8/24/2010)(1040 - 5000)/(18 - 3)-264 ND<5000 (8/14/2018)ND<5000 (8/24/2010)(5000 - 5000)/(19 - 3)0 24300 (8/24/2011)ND<5000 (2/23/2011)(24300 - 5000)/(5 - 4)19300 ND<5000 (2/21/2012)ND<5000 (2/23/2011)(5000 - 5000)/(6 - 4)0 20800 (8/28/2012)ND<5000 (2/23/2011)(20800 - 5000)/(7 - 4)5266.67 14100 (2/19/2013)ND<5000 (2/23/2011)(14100 - 5000)/(8 - 4)2275 5300 (8/28/2013)ND<5000 (2/23/2011)(5300 - 5000)/(9 - 4)60 39200 (2/24/2014)ND<5000 (2/23/2011)(39200 - 5000)/(10 - 4)5700 ND<5000 (8/5/2014)ND<5000 (2/23/2011)(5000 - 5000)/(11 - 4)0 10400 (2/10/2015)ND<5000 (2/23/2011)(10400 - 5000)/(12 - 4)675 5700 (8/25/2015)ND<5000 (2/23/2011)(5700 - 5000)/(13 - 4)77.7778 6400 (2/25/2016)ND<5000 (2/23/2011)(6400 - 5000)/(14 - 4)140 ND<5000 (8/10/2016)ND<5000 (2/23/2011)(5000 - 5000)/(15 - 4)0 ND<5000 (2/16/2017)ND<5000 (2/23/2011)(5000 - 5000)/(16 - 4)0 ND<1040 (8/16/2017)ND<5000 (2/23/2011)(1040 - 5000)/(17 - 4)-304.615 ND<1040 (2/19/2018)ND<5000 (2/23/2011)(1040 - 5000)/(18 - 4)-282.857 ND<5000 (8/14/2018)ND<5000 (2/23/2011)(5000 - 5000)/(19 - 4)0 ND<5000 (2/21/2012)24300 (8/24/2011)(5000 - 24300)/(6 - 5)-19300 20800 (8/28/2012)24300 (8/24/2011)(20800 - 24300)/(7 - 5)-1750 14100 (2/19/2013)24300 (8/24/2011)(14100 - 24300)/(8 - 5)-3400 5300 (8/28/2013)24300 (8/24/2011)(5300 - 24300)/(9 - 5)-4750 39200 (2/24/2014)24300 (8/24/2011)(39200 - 24300)/(10 - 5)2980 ND<5000 (8/5/2014)24300 (8/24/2011)(5000 - 24300)/(11 - 5)-3216.67 10400 (2/10/2015)24300 (8/24/2011)(10400 - 24300)/(12 - 5)-1985.71 5700 (8/25/2015)24300 (8/24/2011)(5700 - 24300)/(13 - 5)-2325 6400 (2/25/2016)24300 (8/24/2011)(6400 - 24300)/(14 - 5)-1988.89 ND<5000 (8/10/2016)24300 (8/24/2011)(5000 - 24300)/(15 - 5)-1930 ND<5000 (2/16/2017)24300 (8/24/2011)(5000 - 24300)/(16 - 5)-1754.55 ND<1040 (8/16/2017)24300 (8/24/2011)(1040 - 24300)/(17 - 5)-1938.33 ND<1040 (2/19/2018)24300 (8/24/2011)(1040 - 24300)/(18 - 5)-1789.23 ND<5000 (8/14/2018)24300 (8/24/2011)(5000 - 24300)/(19 - 5)-1378.57 20800 (8/28/2012)ND<5000 (2/21/2012)(20800 - 5000)/(7 - 6)15800 14100 (2/19/2013)ND<5000 (2/21/2012)(14100 - 5000)/(8 - 6)4550 5300 (8/28/2013)ND<5000 (2/21/2012)(5300 - 5000)/(9 - 6)100 39200 (2/24/2014)ND<5000 (2/21/2012)(39200 - 5000)/(10 - 6)8550 ND<5000 (8/5/2014)ND<5000 (2/21/2012)(5000 - 5000)/(11 - 6)0 10400 (2/10/2015)ND<5000 (2/21/2012)(10400 - 5000)/(12 - 6)900 5700 (8/25/2015)ND<5000 (2/21/2012)(5700 - 5000)/(13 - 6)100 6400 (2/25/2016)ND<5000 (2/21/2012)(6400 - 5000)/(14 - 6)175 ND<5000 (8/10/2016)ND<5000 (2/21/2012)(5000 - 5000)/(15 - 6)0 ND<5000 (2/16/2017)ND<5000 (2/21/2012)(5000 - 5000)/(16 - 6)0 ND<1040 (8/16/2017)ND<5000 (2/21/2012)(1040 - 5000)/(17 - 6)-360 ND<1040 (2/19/2018)ND<5000 (2/21/2012)(1040 - 5000)/(18 - 6)-330 ND<5000 (8/14/2018)ND<5000 (2/21/2012)(5000 - 5000)/(19 - 6)0 14100 (2/19/2013)20800 (8/28/2012)(14100 - 20800)/(8 - 7)-6700 5300 (8/28/2013)20800 (8/28/2012)(5300 - 20800)/(9 - 7)-7750 39200 (2/24/2014)20800 (8/28/2012)(39200 - 20800)/(10 - 7)6133.33 ND<5000 (8/5/2014)20800 (8/28/2012)(5000 - 20800)/(11 - 7)-3950 10400 (2/10/2015)20800 (8/28/2012)(10400 - 20800)/(12 - 7)-2080 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 13 5700 (8/25/2015)20800 (8/28/2012)(5700 - 20800)/(13 - 7)-2516.67 6400 (2/25/2016)20800 (8/28/2012)(6400 - 20800)/(14 - 7)-2057.14 ND<5000 (8/10/2016)20800 (8/28/2012)(5000 - 20800)/(15 - 7)-1975 ND<5000 (2/16/2017)20800 (8/28/2012)(5000 - 20800)/(16 - 7)-1755.56 ND<1040 (8/16/2017)20800 (8/28/2012)(1040 - 20800)/(17 - 7)-1976 ND<1040 (2/19/2018)20800 (8/28/2012)(1040 - 20800)/(18 - 7)-1796.36 ND<5000 (8/14/2018)20800 (8/28/2012)(5000 - 20800)/(19 - 7)-1316.67 5300 (8/28/2013)14100 (2/19/2013)(5300 - 14100)/(9 - 8)-8800 39200 (2/24/2014)14100 (2/19/2013)(39200 - 14100)/(10 - 8)12550 ND<5000 (8/5/2014)14100 (2/19/2013)(5000 - 14100)/(11 - 8)-3033.33 10400 (2/10/2015)14100 (2/19/2013)(10400 - 14100)/(12 - 8)-925 5700 (8/25/2015)14100 (2/19/2013)(5700 - 14100)/(13 - 8)-1680 6400 (2/25/2016)14100 (2/19/2013)(6400 - 14100)/(14 - 8)-1283.33 ND<5000 (8/10/2016)14100 (2/19/2013)(5000 - 14100)/(15 - 8)-1300 ND<5000 (2/16/2017)14100 (2/19/2013)(5000 - 14100)/(16 - 8)-1137.5 ND<1040 (8/16/2017)14100 (2/19/2013)(1040 - 14100)/(17 - 8)-1451.11 ND<1040 (2/19/2018)14100 (2/19/2013)(1040 - 14100)/(18 - 8)-1306 ND<5000 (8/14/2018)14100 (2/19/2013)(5000 - 14100)/(19 - 8)-827.273 39200 (2/24/2014)5300 (8/28/2013)(39200 - 5300)/(10 - 9)33900 ND<5000 (8/5/2014)5300 (8/28/2013)(5000 - 5300)/(11 - 9)-150 10400 (2/10/2015)5300 (8/28/2013)(10400 - 5300)/(12 - 9)1700 5700 (8/25/2015)5300 (8/28/2013)(5700 - 5300)/(13 - 9)100 6400 (2/25/2016)5300 (8/28/2013)(6400 - 5300)/(14 - 9)220 ND<5000 (8/10/2016)5300 (8/28/2013)(5000 - 5300)/(15 - 9)-50 ND<5000 (2/16/2017)5300 (8/28/2013)(5000 - 5300)/(16 - 9)-42.8571 ND<1040 (8/16/2017)5300 (8/28/2013)(1040 - 5300)/(17 - 9)-532.5 ND<1040 (2/19/2018)5300 (8/28/2013)(1040 - 5300)/(18 - 9)-473.333 ND<5000 (8/14/2018)5300 (8/28/2013)(5000 - 5300)/(19 - 9)-30 ND<5000 (8/5/2014)39200 (2/24/2014)(5000 - 39200)/(11 - 10)-34200 10400 (2/10/2015)39200 (2/24/2014)(10400 - 39200)/(12 - 10)-14400 5700 (8/25/2015)39200 (2/24/2014)(5700 - 39200)/(13 - 10)-11166.7 6400 (2/25/2016)39200 (2/24/2014)(6400 - 39200)/(14 - 10)-8200 ND<5000 (8/10/2016)39200 (2/24/2014)(5000 - 39200)/(15 - 10)-6840 ND<5000 (2/16/2017)39200 (2/24/2014)(5000 - 39200)/(16 - 10)-5700 ND<1040 (8/16/2017)39200 (2/24/2014)(1040 - 39200)/(17 - 10)-5451.43 ND<1040 (2/19/2018)39200 (2/24/2014)(1040 - 39200)/(18 - 10)-4770 ND<5000 (8/14/2018)39200 (2/24/2014)(5000 - 39200)/(19 - 10)-3800 10400 (2/10/2015)ND<5000 (8/5/2014)(10400 - 5000)/(12 - 11)5400 5700 (8/25/2015)ND<5000 (8/5/2014)(5700 - 5000)/(13 - 11)350 6400 (2/25/2016)ND<5000 (8/5/2014)(6400 - 5000)/(14 - 11)466.667 ND<5000 (8/10/2016)ND<5000 (8/5/2014)(5000 - 5000)/(15 - 11)0 ND<5000 (2/16/2017)ND<5000 (8/5/2014)(5000 - 5000)/(16 - 11)0 ND<1040 (8/16/2017)ND<5000 (8/5/2014)(1040 - 5000)/(17 - 11)-660 ND<1040 (2/19/2018)ND<5000 (8/5/2014)(1040 - 5000)/(18 - 11)-565.714 ND<5000 (8/14/2018)ND<5000 (8/5/2014)(5000 - 5000)/(19 - 11)0 5700 (8/25/2015)10400 (2/10/2015)(5700 - 10400)/(13 - 12)-4700 6400 (2/25/2016)10400 (2/10/2015)(6400 - 10400)/(14 - 12)-2000 ND<5000 (8/10/2016)10400 (2/10/2015)(5000 - 10400)/(15 - 12)-1800 ND<5000 (2/16/2017)10400 (2/10/2015)(5000 - 10400)/(16 - 12)-1350 ND<1040 (8/16/2017)10400 (2/10/2015)(1040 - 10400)/(17 - 12)-1872 ND<1040 (2/19/2018)10400 (2/10/2015)(1040 - 10400)/(18 - 12)-1560 ND<5000 (8/14/2018)10400 (2/10/2015)(5000 - 10400)/(19 - 12)-771.429 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 14 6400 (2/25/2016)5700 (8/25/2015)(6400 - 5700)/(14 - 13)700 ND<5000 (8/10/2016)5700 (8/25/2015)(5000 - 5700)/(15 - 13)-350 ND<5000 (2/16/2017)5700 (8/25/2015)(5000 - 5700)/(16 - 13)-233.333 ND<1040 (8/16/2017)5700 (8/25/2015)(1040 - 5700)/(17 - 13)-1165 ND<1040 (2/19/2018)5700 (8/25/2015)(1040 - 5700)/(18 - 13)-932 ND<5000 (8/14/2018)5700 (8/25/2015)(5000 - 5700)/(19 - 13)-116.667 ND<5000 (8/10/2016)6400 (2/25/2016)(5000 - 6400)/(15 - 14)-1400 ND<5000 (2/16/2017)6400 (2/25/2016)(5000 - 6400)/(16 - 14)-700 ND<1040 (8/16/2017)6400 (2/25/2016)(1040 - 6400)/(17 - 14)-1786.67 ND<1040 (2/19/2018)6400 (2/25/2016)(1040 - 6400)/(18 - 14)-1340 ND<5000 (8/14/2018)6400 (2/25/2016)(5000 - 6400)/(19 - 14)-280 ND<5000 (2/16/2017)ND<5000 (8/10/2016)(5000 - 5000)/(16 - 15)0 ND<1040 (8/16/2017)ND<5000 (8/10/2016)(1040 - 5000)/(17 - 15)-1980 ND<1040 (2/19/2018)ND<5000 (8/10/2016)(1040 - 5000)/(18 - 15)-1320 ND<5000 (8/14/2018)ND<5000 (8/10/2016)(5000 - 5000)/(19 - 15)0 ND<1040 (8/16/2017)ND<5000 (2/16/2017)(1040 - 5000)/(17 - 16)-3960 ND<1040 (2/19/2018)ND<5000 (2/16/2017)(1040 - 5000)/(18 - 16)-1980 ND<5000 (8/14/2018)ND<5000 (2/16/2017)(5000 - 5000)/(19 - 16)0 ND<1040 (2/19/2018)ND<1040 (8/16/2017)(1040 - 1040)/(18 - 17)0 ND<5000 (8/14/2018)ND<1040 (8/16/2017)(5000 - 1040)/(19 - 17)1980 ND<5000 (8/14/2018)ND<1040 (2/19/2018)(5000 - 1040)/(19 - 18)3960 Number of Q values = 171 Ordered Q Values n Q 1 -34200 2 -19300 3 -15700 4 -14400 5 -11166.7 6 -8800 7 -8200 8 -7850 9 -7750 10 -6840 11 -6700 12 -5700 13 -5451.43 14 -4770 15 -4750 16 -4700 17 -3960 18 -3950 19 -3925 20 -3800 21 -3400 22 -3216.67 23 -3033.33 24 -2516.67 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 15 25 -2325 26 -2200 27 -2080 28 -2057.14 29 -2000 30 -1988.89 31 -1985.71 32 -1980 33 -1980 34 -1976 35 -1975 36 -1938.33 37 -1930 38 -1872 39 -1800 40 -1796.36 41 -1789.23 42 -1786.67 43 -1755.56 44 -1754.55 45 -1750 46 -1744.44 47 -1680 48 -1560 49 -1451.11 50 -1400 51 -1378.57 52 -1363.64 53 -1350 54 -1340 55 -1320 56 -1316.67 57 -1310.67 58 -1306 59 -1300 60 -1283.33 61 -1228.75 62 -1207.69 63 -1191.67 64 -1165 65 -1137.5 66 -1121.43 67 -1100 68 -1030 69 -932 70 -925 71 -923.529 72 -827.273 73 -771.429 74 -700 75 -660 76 -565.714 77 -532.5 78 -473.333 79 -360 80 -350 81 -330 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 16 82 -304.615 83 -282.857 84 -282.857 85 -280 86 -264 87 -247.5 88 -233.333 89 -232.941 90 -150 91 -116.667 92 -50 93 -42.8571 94 -30 95 0 96 0 97 0 98 0 99 0 100 0 101 0 102 0 103 0 104 0 105 0 106 0 107 0 108 0 109 0 110 0 111 0 112 0 113 0 114 0 115 0 116 0 117 0 118 0 119 0 120 0 121 0 122 0 123 0 124 20 125 37.5 126 50 127 58.3333 128 60 129 70 130 77.7778 131 100 132 100 133 100 134 107.692 135 127.273 136 140 137 175 138 220 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 17 139 350 140 466.667 141 490.909 142 600 143 675 144 700 145 900 146 1200 147 1300 148 1700 149 1820 150 1980 151 2275 152 2312.5 153 2633.33 154 2980 155 3800 156 3950 157 3960 158 4550 159 4825 160 4885.71 161 5266.67 162 5400 163 5700 164 6133.33 165 8550 166 9650 167 12550 168 15700 169 15800 170 19300 171 33900 Sen's Estimator (Median Q) is -264 Tied Group Value Members 1 5000 8 2 1040 2 Time Period Observations 2/18/2008 1 8/20/2009 1 8/24/2010 1 2/23/2011 1 8/24/2011 1 2/21/2012 1 8/28/2012 1 2/19/2013 1 8/28/2013 1 2/24/2014 1 8/5/2014 1 2/10/2015 1 8/25/2015 1 2/25/2016 1 8/10/2016 1 2/16/2017 1 8/16/2017 1 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 18 2/19/2018 1 8/14/2018 1 There are 0 time periods with multiple data A = 1194 B = 0 C = 336 D = 0 E = 58 F = 0 a = 14706 b = 52326 c = 684 Group Variance = 750.667 For 90% confidence interval (two-tailed), Z at (1-0.9)/2 = 1.64485 C = 45.0662 M1 = (171 - 45.0662)/2.0 = 62.9669 M2 = (171 + 45.0662)/2.0 + 1 = 109.033 Lower limit is -1191.67 = Q(63) Upper limit is 0 = Q(109) -1191.67 < 0 < 0 indicating no trend in data. DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 19 Sen's Slope Analysis Parameter: Sulfate Location: MW-10 Original Data (Not Transformed) Non-Detects Replaced with Detection Limit 90% Confidence Level Xj Xk (Xj - Xk)/(j-k)Q 10200 (8/20/2009)ND<5000 (2/18/2008)(10200 - 5000)/(2 - 1)5200 ND<5000 (8/24/2010)ND<5000 (2/18/2008)(5000 - 5000)/(3 - 1)0 ND<5000 (2/23/2011)ND<5000 (2/18/2008)(5000 - 5000)/(4 - 1)0 14100 (8/24/2011)ND<5000 (2/18/2008)(14100 - 5000)/(5 - 1)2275 ND<5000 (2/21/2012)ND<5000 (2/18/2008)(5000 - 5000)/(6 - 1)0 19300 (8/28/2012)ND<5000 (2/18/2008)(19300 - 5000)/(7 - 1)2383.33 13800 (2/19/2013)ND<5000 (2/18/2008)(13800 - 5000)/(8 - 1)1257.14 ND<5000 (8/28/2013)ND<5000 (2/18/2008)(5000 - 5000)/(9 - 1)0 24200 (2/24/2014)ND<5000 (2/18/2008)(24200 - 5000)/(10 - 1)2133.33 16500 (8/5/2014)ND<5000 (2/18/2008)(16500 - 5000)/(11 - 1)1150 19700 (2/10/2015)ND<5000 (2/18/2008)(19700 - 5000)/(12 - 1)1336.36 7100 (8/25/2015)ND<5000 (2/18/2008)(7100 - 5000)/(13 - 1)175 7100 (2/25/2016)ND<5000 (2/18/2008)(7100 - 5000)/(14 - 1)161.538 5200 (8/10/2016)ND<5000 (2/18/2008)(5200 - 5000)/(15 - 1)14.2857 ND<5000 (2/16/2017)ND<5000 (2/18/2008)(5000 - 5000)/(16 - 1)0 ND<1040 (8/16/2017)ND<5000 (2/18/2008)(1040 - 5000)/(17 - 1)-247.5 ND<1040 (2/19/2018)ND<5000 (2/18/2008)(1040 - 5000)/(18 - 1)-232.941 6700 (8/14/2018)ND<5000 (2/18/2008)(6700 - 5000)/(19 - 1)94.4444 ND<5000 (8/24/2010)10200 (8/20/2009)(5000 - 10200)/(3 - 2)-5200 ND<5000 (2/23/2011)10200 (8/20/2009)(5000 - 10200)/(4 - 2)-2600 14100 (8/24/2011)10200 (8/20/2009)(14100 - 10200)/(5 - 2)1300 ND<5000 (2/21/2012)10200 (8/20/2009)(5000 - 10200)/(6 - 2)-1300 19300 (8/28/2012)10200 (8/20/2009)(19300 - 10200)/(7 - 2)1820 13800 (2/19/2013)10200 (8/20/2009)(13800 - 10200)/(8 - 2)600 ND<5000 (8/28/2013)10200 (8/20/2009)(5000 - 10200)/(9 - 2)-742.857 24200 (2/24/2014)10200 (8/20/2009)(24200 - 10200)/(10 - 2)1750 16500 (8/5/2014)10200 (8/20/2009)(16500 - 10200)/(11 - 2)700 19700 (2/10/2015)10200 (8/20/2009)(19700 - 10200)/(12 - 2)950 7100 (8/25/2015)10200 (8/20/2009)(7100 - 10200)/(13 - 2)-281.818 7100 (2/25/2016)10200 (8/20/2009)(7100 - 10200)/(14 - 2)-258.333 5200 (8/10/2016)10200 (8/20/2009)(5200 - 10200)/(15 - 2)-384.615 ND<5000 (2/16/2017)10200 (8/20/2009)(5000 - 10200)/(16 - 2)-371.429 ND<1040 (8/16/2017)10200 (8/20/2009)(1040 - 10200)/(17 - 2)-610.667 ND<1040 (2/19/2018)10200 (8/20/2009)(1040 - 10200)/(18 - 2)-572.5 6700 (8/14/2018)10200 (8/20/2009)(6700 - 10200)/(19 - 2)-205.882 ND<5000 (2/23/2011)ND<5000 (8/24/2010)(5000 - 5000)/(4 - 3)0 14100 (8/24/2011)ND<5000 (8/24/2010)(14100 - 5000)/(5 - 3)4550 ND<5000 (2/21/2012)ND<5000 (8/24/2010)(5000 - 5000)/(6 - 3)0 19300 (8/28/2012)ND<5000 (8/24/2010)(19300 - 5000)/(7 - 3)3575 13800 (2/19/2013)ND<5000 (8/24/2010)(13800 - 5000)/(8 - 3)1760 ND<5000 (8/28/2013)ND<5000 (8/24/2010)(5000 - 5000)/(9 - 3)0 24200 (2/24/2014)ND<5000 (8/24/2010)(24200 - 5000)/(10 - 3)2742.86 16500 (8/5/2014)ND<5000 (8/24/2010)(16500 - 5000)/(11 - 3)1437.5 19700 (2/10/2015)ND<5000 (8/24/2010)(19700 - 5000)/(12 - 3)1633.33 7100 (8/25/2015)ND<5000 (8/24/2010)(7100 - 5000)/(13 - 3)210 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 20 7100 (2/25/2016)ND<5000 (8/24/2010)(7100 - 5000)/(14 - 3)190.909 5200 (8/10/2016)ND<5000 (8/24/2010)(5200 - 5000)/(15 - 3)16.6667 ND<5000 (2/16/2017)ND<5000 (8/24/2010)(5000 - 5000)/(16 - 3)0 ND<1040 (8/16/2017)ND<5000 (8/24/2010)(1040 - 5000)/(17 - 3)-282.857 ND<1040 (2/19/2018)ND<5000 (8/24/2010)(1040 - 5000)/(18 - 3)-264 6700 (8/14/2018)ND<5000 (8/24/2010)(6700 - 5000)/(19 - 3)106.25 14100 (8/24/2011)ND<5000 (2/23/2011)(14100 - 5000)/(5 - 4)9100 ND<5000 (2/21/2012)ND<5000 (2/23/2011)(5000 - 5000)/(6 - 4)0 19300 (8/28/2012)ND<5000 (2/23/2011)(19300 - 5000)/(7 - 4)4766.67 13800 (2/19/2013)ND<5000 (2/23/2011)(13800 - 5000)/(8 - 4)2200 ND<5000 (8/28/2013)ND<5000 (2/23/2011)(5000 - 5000)/(9 - 4)0 24200 (2/24/2014)ND<5000 (2/23/2011)(24200 - 5000)/(10 - 4)3200 16500 (8/5/2014)ND<5000 (2/23/2011)(16500 - 5000)/(11 - 4)1642.86 19700 (2/10/2015)ND<5000 (2/23/2011)(19700 - 5000)/(12 - 4)1837.5 7100 (8/25/2015)ND<5000 (2/23/2011)(7100 - 5000)/(13 - 4)233.333 7100 (2/25/2016)ND<5000 (2/23/2011)(7100 - 5000)/(14 - 4)210 5200 (8/10/2016)ND<5000 (2/23/2011)(5200 - 5000)/(15 - 4)18.1818 ND<5000 (2/16/2017)ND<5000 (2/23/2011)(5000 - 5000)/(16 - 4)0 ND<1040 (8/16/2017)ND<5000 (2/23/2011)(1040 - 5000)/(17 - 4)-304.615 ND<1040 (2/19/2018)ND<5000 (2/23/2011)(1040 - 5000)/(18 - 4)-282.857 6700 (8/14/2018)ND<5000 (2/23/2011)(6700 - 5000)/(19 - 4)113.333 ND<5000 (2/21/2012)14100 (8/24/2011)(5000 - 14100)/(6 - 5)-9100 19300 (8/28/2012)14100 (8/24/2011)(19300 - 14100)/(7 - 5)2600 13800 (2/19/2013)14100 (8/24/2011)(13800 - 14100)/(8 - 5)-100 ND<5000 (8/28/2013)14100 (8/24/2011)(5000 - 14100)/(9 - 5)-2275 24200 (2/24/2014)14100 (8/24/2011)(24200 - 14100)/(10 - 5)2020 16500 (8/5/2014)14100 (8/24/2011)(16500 - 14100)/(11 - 5)400 19700 (2/10/2015)14100 (8/24/2011)(19700 - 14100)/(12 - 5)800 7100 (8/25/2015)14100 (8/24/2011)(7100 - 14100)/(13 - 5)-875 7100 (2/25/2016)14100 (8/24/2011)(7100 - 14100)/(14 - 5)-777.778 5200 (8/10/2016)14100 (8/24/2011)(5200 - 14100)/(15 - 5)-890 ND<5000 (2/16/2017)14100 (8/24/2011)(5000 - 14100)/(16 - 5)-827.273 ND<1040 (8/16/2017)14100 (8/24/2011)(1040 - 14100)/(17 - 5)-1088.33 ND<1040 (2/19/2018)14100 (8/24/2011)(1040 - 14100)/(18 - 5)-1004.62 6700 (8/14/2018)14100 (8/24/2011)(6700 - 14100)/(19 - 5)-528.571 19300 (8/28/2012)ND<5000 (2/21/2012)(19300 - 5000)/(7 - 6)14300 13800 (2/19/2013)ND<5000 (2/21/2012)(13800 - 5000)/(8 - 6)4400 ND<5000 (8/28/2013)ND<5000 (2/21/2012)(5000 - 5000)/(9 - 6)0 24200 (2/24/2014)ND<5000 (2/21/2012)(24200 - 5000)/(10 - 6)4800 16500 (8/5/2014)ND<5000 (2/21/2012)(16500 - 5000)/(11 - 6)2300 19700 (2/10/2015)ND<5000 (2/21/2012)(19700 - 5000)/(12 - 6)2450 7100 (8/25/2015)ND<5000 (2/21/2012)(7100 - 5000)/(13 - 6)300 7100 (2/25/2016)ND<5000 (2/21/2012)(7100 - 5000)/(14 - 6)262.5 5200 (8/10/2016)ND<5000 (2/21/2012)(5200 - 5000)/(15 - 6)22.2222 ND<5000 (2/16/2017)ND<5000 (2/21/2012)(5000 - 5000)/(16 - 6)0 ND<1040 (8/16/2017)ND<5000 (2/21/2012)(1040 - 5000)/(17 - 6)-360 ND<1040 (2/19/2018)ND<5000 (2/21/2012)(1040 - 5000)/(18 - 6)-330 6700 (8/14/2018)ND<5000 (2/21/2012)(6700 - 5000)/(19 - 6)130.769 13800 (2/19/2013)19300 (8/28/2012)(13800 - 19300)/(8 - 7)-5500 ND<5000 (8/28/2013)19300 (8/28/2012)(5000 - 19300)/(9 - 7)-7150 24200 (2/24/2014)19300 (8/28/2012)(24200 - 19300)/(10 - 7)1633.33 16500 (8/5/2014)19300 (8/28/2012)(16500 - 19300)/(11 - 7)-700 19700 (2/10/2015)19300 (8/28/2012)(19700 - 19300)/(12 - 7)80 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 21 7100 (8/25/2015)19300 (8/28/2012)(7100 - 19300)/(13 - 7)-2033.33 7100 (2/25/2016)19300 (8/28/2012)(7100 - 19300)/(14 - 7)-1742.86 5200 (8/10/2016)19300 (8/28/2012)(5200 - 19300)/(15 - 7)-1762.5 ND<5000 (2/16/2017)19300 (8/28/2012)(5000 - 19300)/(16 - 7)-1588.89 ND<1040 (8/16/2017)19300 (8/28/2012)(1040 - 19300)/(17 - 7)-1826 ND<1040 (2/19/2018)19300 (8/28/2012)(1040 - 19300)/(18 - 7)-1660 6700 (8/14/2018)19300 (8/28/2012)(6700 - 19300)/(19 - 7)-1050 ND<5000 (8/28/2013)13800 (2/19/2013)(5000 - 13800)/(9 - 8)-8800 24200 (2/24/2014)13800 (2/19/2013)(24200 - 13800)/(10 - 8)5200 16500 (8/5/2014)13800 (2/19/2013)(16500 - 13800)/(11 - 8)900 19700 (2/10/2015)13800 (2/19/2013)(19700 - 13800)/(12 - 8)1475 7100 (8/25/2015)13800 (2/19/2013)(7100 - 13800)/(13 - 8)-1340 7100 (2/25/2016)13800 (2/19/2013)(7100 - 13800)/(14 - 8)-1116.67 5200 (8/10/2016)13800 (2/19/2013)(5200 - 13800)/(15 - 8)-1228.57 ND<5000 (2/16/2017)13800 (2/19/2013)(5000 - 13800)/(16 - 8)-1100 ND<1040 (8/16/2017)13800 (2/19/2013)(1040 - 13800)/(17 - 8)-1417.78 ND<1040 (2/19/2018)13800 (2/19/2013)(1040 - 13800)/(18 - 8)-1276 6700 (8/14/2018)13800 (2/19/2013)(6700 - 13800)/(19 - 8)-645.455 24200 (2/24/2014)ND<5000 (8/28/2013)(24200 - 5000)/(10 - 9)19200 16500 (8/5/2014)ND<5000 (8/28/2013)(16500 - 5000)/(11 - 9)5750 19700 (2/10/2015)ND<5000 (8/28/2013)(19700 - 5000)/(12 - 9)4900 7100 (8/25/2015)ND<5000 (8/28/2013)(7100 - 5000)/(13 - 9)525 7100 (2/25/2016)ND<5000 (8/28/2013)(7100 - 5000)/(14 - 9)420 5200 (8/10/2016)ND<5000 (8/28/2013)(5200 - 5000)/(15 - 9)33.3333 ND<5000 (2/16/2017)ND<5000 (8/28/2013)(5000 - 5000)/(16 - 9)0 ND<1040 (8/16/2017)ND<5000 (8/28/2013)(1040 - 5000)/(17 - 9)-495 ND<1040 (2/19/2018)ND<5000 (8/28/2013)(1040 - 5000)/(18 - 9)-440 6700 (8/14/2018)ND<5000 (8/28/2013)(6700 - 5000)/(19 - 9)170 16500 (8/5/2014)24200 (2/24/2014)(16500 - 24200)/(11 - 10)-7700 19700 (2/10/2015)24200 (2/24/2014)(19700 - 24200)/(12 - 10)-2250 7100 (8/25/2015)24200 (2/24/2014)(7100 - 24200)/(13 - 10)-5700 7100 (2/25/2016)24200 (2/24/2014)(7100 - 24200)/(14 - 10)-4275 5200 (8/10/2016)24200 (2/24/2014)(5200 - 24200)/(15 - 10)-3800 ND<5000 (2/16/2017)24200 (2/24/2014)(5000 - 24200)/(16 - 10)-3200 ND<1040 (8/16/2017)24200 (2/24/2014)(1040 - 24200)/(17 - 10)-3308.57 ND<1040 (2/19/2018)24200 (2/24/2014)(1040 - 24200)/(18 - 10)-2895 6700 (8/14/2018)24200 (2/24/2014)(6700 - 24200)/(19 - 10)-1944.44 19700 (2/10/2015)16500 (8/5/2014)(19700 - 16500)/(12 - 11)3200 7100 (8/25/2015)16500 (8/5/2014)(7100 - 16500)/(13 - 11)-4700 7100 (2/25/2016)16500 (8/5/2014)(7100 - 16500)/(14 - 11)-3133.33 5200 (8/10/2016)16500 (8/5/2014)(5200 - 16500)/(15 - 11)-2825 ND<5000 (2/16/2017)16500 (8/5/2014)(5000 - 16500)/(16 - 11)-2300 ND<1040 (8/16/2017)16500 (8/5/2014)(1040 - 16500)/(17 - 11)-2576.67 ND<1040 (2/19/2018)16500 (8/5/2014)(1040 - 16500)/(18 - 11)-2208.57 6700 (8/14/2018)16500 (8/5/2014)(6700 - 16500)/(19 - 11)-1225 7100 (8/25/2015)19700 (2/10/2015)(7100 - 19700)/(13 - 12)-12600 7100 (2/25/2016)19700 (2/10/2015)(7100 - 19700)/(14 - 12)-6300 5200 (8/10/2016)19700 (2/10/2015)(5200 - 19700)/(15 - 12)-4833.33 ND<5000 (2/16/2017)19700 (2/10/2015)(5000 - 19700)/(16 - 12)-3675 ND<1040 (8/16/2017)19700 (2/10/2015)(1040 - 19700)/(17 - 12)-3732 ND<1040 (2/19/2018)19700 (2/10/2015)(1040 - 19700)/(18 - 12)-3110 6700 (8/14/2018)19700 (2/10/2015)(6700 - 19700)/(19 - 12)-1857.14 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 22 7100 (2/25/2016)7100 (8/25/2015)(7100 - 7100)/(14 - 13)0 5200 (8/10/2016)7100 (8/25/2015)(5200 - 7100)/(15 - 13)-950 ND<5000 (2/16/2017)7100 (8/25/2015)(5000 - 7100)/(16 - 13)-700 ND<1040 (8/16/2017)7100 (8/25/2015)(1040 - 7100)/(17 - 13)-1515 ND<1040 (2/19/2018)7100 (8/25/2015)(1040 - 7100)/(18 - 13)-1212 6700 (8/14/2018)7100 (8/25/2015)(6700 - 7100)/(19 - 13)-66.6667 5200 (8/10/2016)7100 (2/25/2016)(5200 - 7100)/(15 - 14)-1900 ND<5000 (2/16/2017)7100 (2/25/2016)(5000 - 7100)/(16 - 14)-1050 ND<1040 (8/16/2017)7100 (2/25/2016)(1040 - 7100)/(17 - 14)-2020 ND<1040 (2/19/2018)7100 (2/25/2016)(1040 - 7100)/(18 - 14)-1515 6700 (8/14/2018)7100 (2/25/2016)(6700 - 7100)/(19 - 14)-80 ND<5000 (2/16/2017)5200 (8/10/2016)(5000 - 5200)/(16 - 15)-200 ND<1040 (8/16/2017)5200 (8/10/2016)(1040 - 5200)/(17 - 15)-2080 ND<1040 (2/19/2018)5200 (8/10/2016)(1040 - 5200)/(18 - 15)-1386.67 6700 (8/14/2018)5200 (8/10/2016)(6700 - 5200)/(19 - 15)375 ND<1040 (8/16/2017)ND<5000 (2/16/2017)(1040 - 5000)/(17 - 16)-3960 ND<1040 (2/19/2018)ND<5000 (2/16/2017)(1040 - 5000)/(18 - 16)-1980 6700 (8/14/2018)ND<5000 (2/16/2017)(6700 - 5000)/(19 - 16)566.667 ND<1040 (2/19/2018)ND<1040 (8/16/2017)(1040 - 1040)/(18 - 17)0 6700 (8/14/2018)ND<1040 (8/16/2017)(6700 - 1040)/(19 - 17)2830 6700 (8/14/2018)ND<1040 (2/19/2018)(6700 - 1040)/(19 - 18)5660 Number of Q values = 171 Ordered Q Values n Q 1 -12600 2 -9100 3 -8800 4 -7700 5 -7150 6 -6300 7 -5700 8 -5500 9 -5200 10 -4833.33 11 -4700 12 -4275 13 -3960 14 -3800 15 -3732 16 -3675 17 -3308.57 18 -3200 19 -3133.33 20 -3110 21 -2895 22 -2825 23 -2600 24 -2576.67 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 23 25 -2300 26 -2275 27 -2250 28 -2208.57 29 -2080 30 -2033.33 31 -2020 32 -1980 33 -1944.44 34 -1900 35 -1857.14 36 -1826 37 -1762.5 38 -1742.86 39 -1660 40 -1588.89 41 -1515 42 -1515 43 -1417.78 44 -1386.67 45 -1340 46 -1300 47 -1276 48 -1228.57 49 -1225 50 -1212 51 -1116.67 52 -1100 53 -1088.33 54 -1050 55 -1050 56 -1004.62 57 -950 58 -890 59 -875 60 -827.273 61 -777.778 62 -742.857 63 -700 64 -700 65 -645.455 66 -610.667 67 -572.5 68 -528.571 69 -495 70 -440 71 -384.615 72 -371.429 73 -360 74 -330 75 -304.615 76 -282.857 77 -282.857 78 -281.818 79 -264 80 -258.333 81 -247.5 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 24 82 -232.941 83 -205.882 84 -200 85 -100 86 -80 87 -66.6667 88 0 89 0 90 0 91 0 92 0 93 0 94 0 95 0 96 0 97 0 98 0 99 0 100 0 101 0 102 0 103 0 104 0 105 14.2857 106 16.6667 107 18.1818 108 22.2222 109 33.3333 110 80 111 94.4444 112 106.25 113 113.333 114 130.769 115 161.538 116 170 117 175 118 190.909 119 210 120 210 121 233.333 122 262.5 123 300 124 375 125 400 126 420 127 525 128 566.667 129 600 130 700 131 800 132 900 133 950 134 1150 135 1257.14 136 1300 137 1336.36 138 1437.5 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 25 139 1475 140 1633.33 141 1633.33 142 1642.86 143 1750 144 1760 145 1820 146 1837.5 147 2020 148 2133.33 149 2200 150 2275 151 2300 152 2383.33 153 2450 154 2600 155 2742.86 156 2830 157 3200 158 3200 159 3575 160 4400 161 4550 162 4766.67 163 4800 164 4900 165 5200 166 5200 167 5660 168 5750 169 9100 170 14300 171 19200 Sen's Estimator (Median Q) is -80 Tied Group Value Members 1 5000 6 2 7100 2 3 1040 2 Time Period Observations 2/18/2008 1 8/20/2009 1 8/24/2010 1 2/23/2011 1 8/24/2011 1 2/21/2012 1 8/28/2012 1 2/19/2013 1 8/28/2013 1 2/24/2014 1 8/5/2014 1 2/10/2015 1 8/25/2015 1 2/25/2016 1 8/10/2016 1 2/16/2017 1 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 26 8/16/2017 1 2/19/2018 1 8/14/2018 1 There are 0 time periods with multiple data A = 546 B = 0 C = 120 D = 0 E = 34 F = 0 a = 14706 b = 52326 c = 684 Group Variance = 786.667 For 90% confidence interval (two-tailed), Z at (1-0.9)/2 = 1.64485 C = 46.1341 M1 = (171 - 46.1341)/2.0 = 62.4329 M2 = (171 + 46.1341)/2.0 + 1 = 109.567 Lower limit is -742.857 = Q(62) Upper limit is 80 = Q(110) -742.857 < 0 < 80 indicating no trend in data. DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 27 Sen's Slope Analysis Parameter: Sulfate Location: MW-11 Original Data (Not Transformed) Non-Detects Replaced with Detection Limit 90% Confidence Level Xj Xk (Xj - Xk)/(j-k)Q 10600 (8/20/2009)ND<5000 (2/18/2008)(10600 - 5000)/(2 - 1)5600 ND<5000 (8/24/2010)ND<5000 (2/18/2008)(5000 - 5000)/(3 - 1)0 ND<5000 (2/23/2011)ND<5000 (2/18/2008)(5000 - 5000)/(4 - 1)0 ND<5000 (8/24/2011)ND<5000 (2/18/2008)(5000 - 5000)/(5 - 1)0 ND<5000 (2/21/2012)ND<5000 (2/18/2008)(5000 - 5000)/(6 - 1)0 ND<5000 (8/28/2012)ND<5000 (2/18/2008)(5000 - 5000)/(7 - 1)0 14600 (2/19/2013)ND<5000 (2/18/2008)(14600 - 5000)/(8 - 1)1371.43 ND<5000 (8/28/2013)ND<5000 (2/18/2008)(5000 - 5000)/(9 - 1)0 10300 (2/24/2014)ND<5000 (2/18/2008)(10300 - 5000)/(10 - 1)588.889 11400 (8/5/2014)ND<5000 (2/18/2008)(11400 - 5000)/(11 - 1)640 13100 (2/10/2015)ND<5000 (2/18/2008)(13100 - 5000)/(12 - 1)736.364 6000 (8/25/2015)ND<5000 (2/18/2008)(6000 - 5000)/(13 - 1)83.3333 6600 (2/25/2016)ND<5000 (2/18/2008)(6600 - 5000)/(14 - 1)123.077 ND<5000 (8/10/2016)ND<5000 (2/18/2008)(5000 - 5000)/(15 - 1)0 ND<5000 (2/16/2017)ND<5000 (2/18/2008)(5000 - 5000)/(16 - 1)0 6100 (8/16/2017)ND<5000 (2/18/2008)(6100 - 5000)/(17 - 1)68.75 ND<1040 (2/19/2018)ND<5000 (2/18/2008)(1040 - 5000)/(18 - 1)-232.941 5800 (8/14/2018)ND<5000 (2/18/2008)(5800 - 5000)/(19 - 1)44.4444 ND<5000 (8/24/2010)10600 (8/20/2009)(5000 - 10600)/(3 - 2)-5600 ND<5000 (2/23/2011)10600 (8/20/2009)(5000 - 10600)/(4 - 2)-2800 ND<5000 (8/24/2011)10600 (8/20/2009)(5000 - 10600)/(5 - 2)-1866.67 ND<5000 (2/21/2012)10600 (8/20/2009)(5000 - 10600)/(6 - 2)-1400 ND<5000 (8/28/2012)10600 (8/20/2009)(5000 - 10600)/(7 - 2)-1120 14600 (2/19/2013)10600 (8/20/2009)(14600 - 10600)/(8 - 2)666.667 ND<5000 (8/28/2013)10600 (8/20/2009)(5000 - 10600)/(9 - 2)-800 10300 (2/24/2014)10600 (8/20/2009)(10300 - 10600)/(10 - 2)-37.5 11400 (8/5/2014)10600 (8/20/2009)(11400 - 10600)/(11 - 2)88.8889 13100 (2/10/2015)10600 (8/20/2009)(13100 - 10600)/(12 - 2)250 6000 (8/25/2015)10600 (8/20/2009)(6000 - 10600)/(13 - 2)-418.182 6600 (2/25/2016)10600 (8/20/2009)(6600 - 10600)/(14 - 2)-333.333 ND<5000 (8/10/2016)10600 (8/20/2009)(5000 - 10600)/(15 - 2)-430.769 ND<5000 (2/16/2017)10600 (8/20/2009)(5000 - 10600)/(16 - 2)-400 6100 (8/16/2017)10600 (8/20/2009)(6100 - 10600)/(17 - 2)-300 ND<1040 (2/19/2018)10600 (8/20/2009)(1040 - 10600)/(18 - 2)-597.5 5800 (8/14/2018)10600 (8/20/2009)(5800 - 10600)/(19 - 2)-282.353 ND<5000 (2/23/2011)ND<5000 (8/24/2010)(5000 - 5000)/(4 - 3)0 ND<5000 (8/24/2011)ND<5000 (8/24/2010)(5000 - 5000)/(5 - 3)0 ND<5000 (2/21/2012)ND<5000 (8/24/2010)(5000 - 5000)/(6 - 3)0 ND<5000 (8/28/2012)ND<5000 (8/24/2010)(5000 - 5000)/(7 - 3)0 14600 (2/19/2013)ND<5000 (8/24/2010)(14600 - 5000)/(8 - 3)1920 ND<5000 (8/28/2013)ND<5000 (8/24/2010)(5000 - 5000)/(9 - 3)0 10300 (2/24/2014)ND<5000 (8/24/2010)(10300 - 5000)/(10 - 3)757.143 11400 (8/5/2014)ND<5000 (8/24/2010)(11400 - 5000)/(11 - 3)800 13100 (2/10/2015)ND<5000 (8/24/2010)(13100 - 5000)/(12 - 3)900 6000 (8/25/2015)ND<5000 (8/24/2010)(6000 - 5000)/(13 - 3)100 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 28 6600 (2/25/2016)ND<5000 (8/24/2010)(6600 - 5000)/(14 - 3)145.455 ND<5000 (8/10/2016)ND<5000 (8/24/2010)(5000 - 5000)/(15 - 3)0 ND<5000 (2/16/2017)ND<5000 (8/24/2010)(5000 - 5000)/(16 - 3)0 6100 (8/16/2017)ND<5000 (8/24/2010)(6100 - 5000)/(17 - 3)78.5714 ND<1040 (2/19/2018)ND<5000 (8/24/2010)(1040 - 5000)/(18 - 3)-264 5800 (8/14/2018)ND<5000 (8/24/2010)(5800 - 5000)/(19 - 3)50 ND<5000 (8/24/2011)ND<5000 (2/23/2011)(5000 - 5000)/(5 - 4)0 ND<5000 (2/21/2012)ND<5000 (2/23/2011)(5000 - 5000)/(6 - 4)0 ND<5000 (8/28/2012)ND<5000 (2/23/2011)(5000 - 5000)/(7 - 4)0 14600 (2/19/2013)ND<5000 (2/23/2011)(14600 - 5000)/(8 - 4)2400 ND<5000 (8/28/2013)ND<5000 (2/23/2011)(5000 - 5000)/(9 - 4)0 10300 (2/24/2014)ND<5000 (2/23/2011)(10300 - 5000)/(10 - 4)883.333 11400 (8/5/2014)ND<5000 (2/23/2011)(11400 - 5000)/(11 - 4)914.286 13100 (2/10/2015)ND<5000 (2/23/2011)(13100 - 5000)/(12 - 4)1012.5 6000 (8/25/2015)ND<5000 (2/23/2011)(6000 - 5000)/(13 - 4)111.111 6600 (2/25/2016)ND<5000 (2/23/2011)(6600 - 5000)/(14 - 4)160 ND<5000 (8/10/2016)ND<5000 (2/23/2011)(5000 - 5000)/(15 - 4)0 ND<5000 (2/16/2017)ND<5000 (2/23/2011)(5000 - 5000)/(16 - 4)0 6100 (8/16/2017)ND<5000 (2/23/2011)(6100 - 5000)/(17 - 4)84.6154 ND<1040 (2/19/2018)ND<5000 (2/23/2011)(1040 - 5000)/(18 - 4)-282.857 5800 (8/14/2018)ND<5000 (2/23/2011)(5800 - 5000)/(19 - 4)53.3333 ND<5000 (2/21/2012)ND<5000 (8/24/2011)(5000 - 5000)/(6 - 5)0 ND<5000 (8/28/2012)ND<5000 (8/24/2011)(5000 - 5000)/(7 - 5)0 14600 (2/19/2013)ND<5000 (8/24/2011)(14600 - 5000)/(8 - 5)3200 ND<5000 (8/28/2013)ND<5000 (8/24/2011)(5000 - 5000)/(9 - 5)0 10300 (2/24/2014)ND<5000 (8/24/2011)(10300 - 5000)/(10 - 5)1060 11400 (8/5/2014)ND<5000 (8/24/2011)(11400 - 5000)/(11 - 5)1066.67 13100 (2/10/2015)ND<5000 (8/24/2011)(13100 - 5000)/(12 - 5)1157.14 6000 (8/25/2015)ND<5000 (8/24/2011)(6000 - 5000)/(13 - 5)125 6600 (2/25/2016)ND<5000 (8/24/2011)(6600 - 5000)/(14 - 5)177.778 ND<5000 (8/10/2016)ND<5000 (8/24/2011)(5000 - 5000)/(15 - 5)0 ND<5000 (2/16/2017)ND<5000 (8/24/2011)(5000 - 5000)/(16 - 5)0 6100 (8/16/2017)ND<5000 (8/24/2011)(6100 - 5000)/(17 - 5)91.6667 ND<1040 (2/19/2018)ND<5000 (8/24/2011)(1040 - 5000)/(18 - 5)-304.615 5800 (8/14/2018)ND<5000 (8/24/2011)(5800 - 5000)/(19 - 5)57.1429 ND<5000 (8/28/2012)ND<5000 (2/21/2012)(5000 - 5000)/(7 - 6)0 14600 (2/19/2013)ND<5000 (2/21/2012)(14600 - 5000)/(8 - 6)4800 ND<5000 (8/28/2013)ND<5000 (2/21/2012)(5000 - 5000)/(9 - 6)0 10300 (2/24/2014)ND<5000 (2/21/2012)(10300 - 5000)/(10 - 6)1325 11400 (8/5/2014)ND<5000 (2/21/2012)(11400 - 5000)/(11 - 6)1280 13100 (2/10/2015)ND<5000 (2/21/2012)(13100 - 5000)/(12 - 6)1350 6000 (8/25/2015)ND<5000 (2/21/2012)(6000 - 5000)/(13 - 6)142.857 6600 (2/25/2016)ND<5000 (2/21/2012)(6600 - 5000)/(14 - 6)200 ND<5000 (8/10/2016)ND<5000 (2/21/2012)(5000 - 5000)/(15 - 6)0 ND<5000 (2/16/2017)ND<5000 (2/21/2012)(5000 - 5000)/(16 - 6)0 6100 (8/16/2017)ND<5000 (2/21/2012)(6100 - 5000)/(17 - 6)100 ND<1040 (2/19/2018)ND<5000 (2/21/2012)(1040 - 5000)/(18 - 6)-330 5800 (8/14/2018)ND<5000 (2/21/2012)(5800 - 5000)/(19 - 6)61.5385 14600 (2/19/2013)ND<5000 (8/28/2012)(14600 - 5000)/(8 - 7)9600 ND<5000 (8/28/2013)ND<5000 (8/28/2012)(5000 - 5000)/(9 - 7)0 10300 (2/24/2014)ND<5000 (8/28/2012)(10300 - 5000)/(10 - 7)1766.67 11400 (8/5/2014)ND<5000 (8/28/2012)(11400 - 5000)/(11 - 7)1600 13100 (2/10/2015)ND<5000 (8/28/2012)(13100 - 5000)/(12 - 7)1620 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 29 6000 (8/25/2015)ND<5000 (8/28/2012)(6000 - 5000)/(13 - 7)166.667 6600 (2/25/2016)ND<5000 (8/28/2012)(6600 - 5000)/(14 - 7)228.571 ND<5000 (8/10/2016)ND<5000 (8/28/2012)(5000 - 5000)/(15 - 7)0 ND<5000 (2/16/2017)ND<5000 (8/28/2012)(5000 - 5000)/(16 - 7)0 6100 (8/16/2017)ND<5000 (8/28/2012)(6100 - 5000)/(17 - 7)110 ND<1040 (2/19/2018)ND<5000 (8/28/2012)(1040 - 5000)/(18 - 7)-360 5800 (8/14/2018)ND<5000 (8/28/2012)(5800 - 5000)/(19 - 7)66.6667 ND<5000 (8/28/2013)14600 (2/19/2013)(5000 - 14600)/(9 - 8)-9600 10300 (2/24/2014)14600 (2/19/2013)(10300 - 14600)/(10 - 8)-2150 11400 (8/5/2014)14600 (2/19/2013)(11400 - 14600)/(11 - 8)-1066.67 13100 (2/10/2015)14600 (2/19/2013)(13100 - 14600)/(12 - 8)-375 6000 (8/25/2015)14600 (2/19/2013)(6000 - 14600)/(13 - 8)-1720 6600 (2/25/2016)14600 (2/19/2013)(6600 - 14600)/(14 - 8)-1333.33 ND<5000 (8/10/2016)14600 (2/19/2013)(5000 - 14600)/(15 - 8)-1371.43 ND<5000 (2/16/2017)14600 (2/19/2013)(5000 - 14600)/(16 - 8)-1200 6100 (8/16/2017)14600 (2/19/2013)(6100 - 14600)/(17 - 8)-944.444 ND<1040 (2/19/2018)14600 (2/19/2013)(1040 - 14600)/(18 - 8)-1356 5800 (8/14/2018)14600 (2/19/2013)(5800 - 14600)/(19 - 8)-800 10300 (2/24/2014)ND<5000 (8/28/2013)(10300 - 5000)/(10 - 9)5300 11400 (8/5/2014)ND<5000 (8/28/2013)(11400 - 5000)/(11 - 9)3200 13100 (2/10/2015)ND<5000 (8/28/2013)(13100 - 5000)/(12 - 9)2700 6000 (8/25/2015)ND<5000 (8/28/2013)(6000 - 5000)/(13 - 9)250 6600 (2/25/2016)ND<5000 (8/28/2013)(6600 - 5000)/(14 - 9)320 ND<5000 (8/10/2016)ND<5000 (8/28/2013)(5000 - 5000)/(15 - 9)0 ND<5000 (2/16/2017)ND<5000 (8/28/2013)(5000 - 5000)/(16 - 9)0 6100 (8/16/2017)ND<5000 (8/28/2013)(6100 - 5000)/(17 - 9)137.5 ND<1040 (2/19/2018)ND<5000 (8/28/2013)(1040 - 5000)/(18 - 9)-440 5800 (8/14/2018)ND<5000 (8/28/2013)(5800 - 5000)/(19 - 9)80 11400 (8/5/2014)10300 (2/24/2014)(11400 - 10300)/(11 - 10)1100 13100 (2/10/2015)10300 (2/24/2014)(13100 - 10300)/(12 - 10)1400 6000 (8/25/2015)10300 (2/24/2014)(6000 - 10300)/(13 - 10)-1433.33 6600 (2/25/2016)10300 (2/24/2014)(6600 - 10300)/(14 - 10)-925 ND<5000 (8/10/2016)10300 (2/24/2014)(5000 - 10300)/(15 - 10)-1060 ND<5000 (2/16/2017)10300 (2/24/2014)(5000 - 10300)/(16 - 10)-883.333 6100 (8/16/2017)10300 (2/24/2014)(6100 - 10300)/(17 - 10)-600 ND<1040 (2/19/2018)10300 (2/24/2014)(1040 - 10300)/(18 - 10)-1157.5 5800 (8/14/2018)10300 (2/24/2014)(5800 - 10300)/(19 - 10)-500 13100 (2/10/2015)11400 (8/5/2014)(13100 - 11400)/(12 - 11)1700 6000 (8/25/2015)11400 (8/5/2014)(6000 - 11400)/(13 - 11)-2700 6600 (2/25/2016)11400 (8/5/2014)(6600 - 11400)/(14 - 11)-1600 ND<5000 (8/10/2016)11400 (8/5/2014)(5000 - 11400)/(15 - 11)-1600 ND<5000 (2/16/2017)11400 (8/5/2014)(5000 - 11400)/(16 - 11)-1280 6100 (8/16/2017)11400 (8/5/2014)(6100 - 11400)/(17 - 11)-883.333 ND<1040 (2/19/2018)11400 (8/5/2014)(1040 - 11400)/(18 - 11)-1480 5800 (8/14/2018)11400 (8/5/2014)(5800 - 11400)/(19 - 11)-700 6000 (8/25/2015)13100 (2/10/2015)(6000 - 13100)/(13 - 12)-7100 6600 (2/25/2016)13100 (2/10/2015)(6600 - 13100)/(14 - 12)-3250 ND<5000 (8/10/2016)13100 (2/10/2015)(5000 - 13100)/(15 - 12)-2700 ND<5000 (2/16/2017)13100 (2/10/2015)(5000 - 13100)/(16 - 12)-2025 6100 (8/16/2017)13100 (2/10/2015)(6100 - 13100)/(17 - 12)-1400 ND<1040 (2/19/2018)13100 (2/10/2015)(1040 - 13100)/(18 - 12)-2010 5800 (8/14/2018)13100 (2/10/2015)(5800 - 13100)/(19 - 12)-1042.86 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 30 6600 (2/25/2016)6000 (8/25/2015)(6600 - 6000)/(14 - 13)600 ND<5000 (8/10/2016)6000 (8/25/2015)(5000 - 6000)/(15 - 13)-500 ND<5000 (2/16/2017)6000 (8/25/2015)(5000 - 6000)/(16 - 13)-333.333 6100 (8/16/2017)6000 (8/25/2015)(6100 - 6000)/(17 - 13)25 ND<1040 (2/19/2018)6000 (8/25/2015)(1040 - 6000)/(18 - 13)-992 5800 (8/14/2018)6000 (8/25/2015)(5800 - 6000)/(19 - 13)-33.3333 ND<5000 (8/10/2016)6600 (2/25/2016)(5000 - 6600)/(15 - 14)-1600 ND<5000 (2/16/2017)6600 (2/25/2016)(5000 - 6600)/(16 - 14)-800 6100 (8/16/2017)6600 (2/25/2016)(6100 - 6600)/(17 - 14)-166.667 ND<1040 (2/19/2018)6600 (2/25/2016)(1040 - 6600)/(18 - 14)-1390 5800 (8/14/2018)6600 (2/25/2016)(5800 - 6600)/(19 - 14)-160 ND<5000 (2/16/2017)ND<5000 (8/10/2016)(5000 - 5000)/(16 - 15)0 6100 (8/16/2017)ND<5000 (8/10/2016)(6100 - 5000)/(17 - 15)550 ND<1040 (2/19/2018)ND<5000 (8/10/2016)(1040 - 5000)/(18 - 15)-1320 5800 (8/14/2018)ND<5000 (8/10/2016)(5800 - 5000)/(19 - 15)200 6100 (8/16/2017)ND<5000 (2/16/2017)(6100 - 5000)/(17 - 16)1100 ND<1040 (2/19/2018)ND<5000 (2/16/2017)(1040 - 5000)/(18 - 16)-1980 5800 (8/14/2018)ND<5000 (2/16/2017)(5800 - 5000)/(19 - 16)266.667 ND<1040 (2/19/2018)6100 (8/16/2017)(1040 - 6100)/(18 - 17)-5060 5800 (8/14/2018)6100 (8/16/2017)(5800 - 6100)/(19 - 17)-150 5800 (8/14/2018)ND<1040 (2/19/2018)(5800 - 1040)/(19 - 18)4760 Number of Q values = 171 Ordered Q Values n Q 1 -9600 2 -7100 3 -5600 4 -5060 5 -3250 6 -2800 7 -2700 8 -2700 9 -2150 10 -2025 11 -2010 12 -1980 13 -1866.67 14 -1720 15 -1600 16 -1600 17 -1600 18 -1480 19 -1433.33 20 -1400 21 -1400 22 -1390 23 -1371.43 24 -1356 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 31 25 -1333.33 26 -1320 27 -1280 28 -1200 29 -1157.5 30 -1120 31 -1066.67 32 -1060 33 -1042.86 34 -992 35 -944.444 36 -925 37 -883.333 38 -883.333 39 -800 40 -800 41 -800 42 -700 43 -600 44 -597.5 45 -500 46 -500 47 -440 48 -430.769 49 -418.182 50 -400 51 -375 52 -360 53 -333.333 54 -333.333 55 -330 56 -304.615 57 -300 58 -282.857 59 -282.353 60 -264 61 -232.941 62 -166.667 63 -160 64 -150 65 -37.5 66 -33.3333 67 0 68 0 69 0 70 0 71 0 72 0 73 0 74 0 75 0 76 0 77 0 78 0 79 0 80 0 81 0 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 32 82 0 83 0 84 0 85 0 86 0 87 0 88 0 89 0 90 0 91 0 92 0 93 0 94 0 95 0 96 0 97 0 98 0 99 0 100 0 101 0 102 0 103 25 104 44.4444 105 50 106 53.3333 107 57.1429 108 61.5385 109 66.6667 110 68.75 111 78.5714 112 80 113 83.3333 114 84.6154 115 88.8889 116 91.6667 117 100 118 100 119 110 120 111.111 121 123.077 122 125 123 137.5 124 142.857 125 145.455 126 160 127 166.667 128 177.778 129 200 130 200 131 228.571 132 250 133 250 134 266.667 135 320 136 550 137 588.889 138 600 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 33 139 640 140 666.667 141 736.364 142 757.143 143 800 144 883.333 145 900 146 914.286 147 1012.5 148 1060 149 1066.67 150 1100 151 1100 152 1157.14 153 1280 154 1325 155 1350 156 1371.43 157 1400 158 1600 159 1620 160 1700 161 1766.67 162 1920 163 2400 164 2700 165 3200 166 3200 167 4760 168 4800 169 5300 170 5600 171 9600 Sen's Estimator (Median Q) is 0 Tied Group Value Members 1 5000 9 Time Period Observations 2/18/2008 1 8/20/2009 1 8/24/2010 1 2/23/2011 1 8/24/2011 1 2/21/2012 1 8/28/2012 1 2/19/2013 1 8/28/2013 1 2/24/2014 1 8/5/2014 1 2/10/2015 1 8/25/2015 1 2/25/2016 1 8/10/2016 1 2/16/2017 1 8/16/2017 1 2/19/2018 1 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 34 8/14/2018 1 There are 0 time periods with multiple data A = 1656 B = 0 C = 504 D = 0 E = 72 F = 0 a = 14706 b = 52326 c = 684 Group Variance = 725 For 90% confidence interval (two-tailed), Z at (1-0.9)/2 = 1.64485 C = 44.289 M1 = (171 - 44.289)/2.0 = 63.3555 M2 = (171 + 44.289)/2.0 + 1 = 108.645 Lower limit is -160 = Q(63) Upper limit is 66.6667 = Q(109) -160 < 0 < 66.6667 indicating no trend in data. DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 35 Sen's Slope Analysis Parameter: Sulfate Location: MW-12 Original Data (Not Transformed) Non-Detects Replaced with Detection Limit 90% Confidence Level Xj Xk (Xj - Xk)/(j-k)Q 10400 (8/20/2009)ND<5000 (2/18/2008)(10400 - 5000)/(2 - 1)5400 ND<5000 (8/24/2010)ND<5000 (2/18/2008)(5000 - 5000)/(3 - 1)0 ND<5000 (2/23/2011)ND<5000 (2/18/2008)(5000 - 5000)/(4 - 1)0 7400 (8/24/2011)ND<5000 (2/18/2008)(7400 - 5000)/(5 - 1)600 11500 (2/21/2012)ND<5000 (2/18/2008)(11500 - 5000)/(6 - 1)1300 7800 (8/28/2012)ND<5000 (2/18/2008)(7800 - 5000)/(7 - 1)466.667 10400 (2/19/2013)ND<5000 (2/18/2008)(10400 - 5000)/(8 - 1)771.429 ND<5000 (8/28/2013)ND<5000 (2/18/2008)(5000 - 5000)/(9 - 1)0 ND<5000 (2/24/2014)ND<5000 (2/18/2008)(5000 - 5000)/(10 - 1)0 12900 (8/5/2014)ND<5000 (2/18/2008)(12900 - 5000)/(11 - 1)790 11200 (2/10/2015)ND<5000 (2/18/2008)(11200 - 5000)/(12 - 1)563.636 7000 (8/25/2015)ND<5000 (2/18/2008)(7000 - 5000)/(13 - 1)166.667 6200 (2/25/2016)ND<5000 (2/18/2008)(6200 - 5000)/(14 - 1)92.3077 ND<5000 (8/10/2016)ND<5000 (2/18/2008)(5000 - 5000)/(15 - 1)0 ND<5000 (2/16/2017)ND<5000 (2/18/2008)(5000 - 5000)/(16 - 1)0 ND<1040 (8/16/2017)ND<5000 (2/18/2008)(1040 - 5000)/(17 - 1)-247.5 ND<1040 (2/19/2018)ND<5000 (2/18/2008)(1040 - 5000)/(18 - 1)-232.941 ND<5000 (8/14/2018)ND<5000 (2/18/2008)(5000 - 5000)/(19 - 1)0 ND<5000 (8/24/2010)10400 (8/20/2009)(5000 - 10400)/(3 - 2)-5400 ND<5000 (2/23/2011)10400 (8/20/2009)(5000 - 10400)/(4 - 2)-2700 7400 (8/24/2011)10400 (8/20/2009)(7400 - 10400)/(5 - 2)-1000 11500 (2/21/2012)10400 (8/20/2009)(11500 - 10400)/(6 - 2)275 7800 (8/28/2012)10400 (8/20/2009)(7800 - 10400)/(7 - 2)-520 10400 (2/19/2013)10400 (8/20/2009)(10400 - 10400)/(8 - 2)0 ND<5000 (8/28/2013)10400 (8/20/2009)(5000 - 10400)/(9 - 2)-771.429 ND<5000 (2/24/2014)10400 (8/20/2009)(5000 - 10400)/(10 - 2)-675 12900 (8/5/2014)10400 (8/20/2009)(12900 - 10400)/(11 - 2)277.778 11200 (2/10/2015)10400 (8/20/2009)(11200 - 10400)/(12 - 2)80 7000 (8/25/2015)10400 (8/20/2009)(7000 - 10400)/(13 - 2)-309.091 6200 (2/25/2016)10400 (8/20/2009)(6200 - 10400)/(14 - 2)-350 ND<5000 (8/10/2016)10400 (8/20/2009)(5000 - 10400)/(15 - 2)-415.385 ND<5000 (2/16/2017)10400 (8/20/2009)(5000 - 10400)/(16 - 2)-385.714 ND<1040 (8/16/2017)10400 (8/20/2009)(1040 - 10400)/(17 - 2)-624 ND<1040 (2/19/2018)10400 (8/20/2009)(1040 - 10400)/(18 - 2)-585 ND<5000 (8/14/2018)10400 (8/20/2009)(5000 - 10400)/(19 - 2)-317.647 ND<5000 (2/23/2011)ND<5000 (8/24/2010)(5000 - 5000)/(4 - 3)0 7400 (8/24/2011)ND<5000 (8/24/2010)(7400 - 5000)/(5 - 3)1200 11500 (2/21/2012)ND<5000 (8/24/2010)(11500 - 5000)/(6 - 3)2166.67 7800 (8/28/2012)ND<5000 (8/24/2010)(7800 - 5000)/(7 - 3)700 10400 (2/19/2013)ND<5000 (8/24/2010)(10400 - 5000)/(8 - 3)1080 ND<5000 (8/28/2013)ND<5000 (8/24/2010)(5000 - 5000)/(9 - 3)0 ND<5000 (2/24/2014)ND<5000 (8/24/2010)(5000 - 5000)/(10 - 3)0 12900 (8/5/2014)ND<5000 (8/24/2010)(12900 - 5000)/(11 - 3)987.5 11200 (2/10/2015)ND<5000 (8/24/2010)(11200 - 5000)/(12 - 3)688.889 7000 (8/25/2015)ND<5000 (8/24/2010)(7000 - 5000)/(13 - 3)200 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 36 6200 (2/25/2016)ND<5000 (8/24/2010)(6200 - 5000)/(14 - 3)109.091 ND<5000 (8/10/2016)ND<5000 (8/24/2010)(5000 - 5000)/(15 - 3)0 ND<5000 (2/16/2017)ND<5000 (8/24/2010)(5000 - 5000)/(16 - 3)0 ND<1040 (8/16/2017)ND<5000 (8/24/2010)(1040 - 5000)/(17 - 3)-282.857 ND<1040 (2/19/2018)ND<5000 (8/24/2010)(1040 - 5000)/(18 - 3)-264 ND<5000 (8/14/2018)ND<5000 (8/24/2010)(5000 - 5000)/(19 - 3)0 7400 (8/24/2011)ND<5000 (2/23/2011)(7400 - 5000)/(5 - 4)2400 11500 (2/21/2012)ND<5000 (2/23/2011)(11500 - 5000)/(6 - 4)3250 7800 (8/28/2012)ND<5000 (2/23/2011)(7800 - 5000)/(7 - 4)933.333 10400 (2/19/2013)ND<5000 (2/23/2011)(10400 - 5000)/(8 - 4)1350 ND<5000 (8/28/2013)ND<5000 (2/23/2011)(5000 - 5000)/(9 - 4)0 ND<5000 (2/24/2014)ND<5000 (2/23/2011)(5000 - 5000)/(10 - 4)0 12900 (8/5/2014)ND<5000 (2/23/2011)(12900 - 5000)/(11 - 4)1128.57 11200 (2/10/2015)ND<5000 (2/23/2011)(11200 - 5000)/(12 - 4)775 7000 (8/25/2015)ND<5000 (2/23/2011)(7000 - 5000)/(13 - 4)222.222 6200 (2/25/2016)ND<5000 (2/23/2011)(6200 - 5000)/(14 - 4)120 ND<5000 (8/10/2016)ND<5000 (2/23/2011)(5000 - 5000)/(15 - 4)0 ND<5000 (2/16/2017)ND<5000 (2/23/2011)(5000 - 5000)/(16 - 4)0 ND<1040 (8/16/2017)ND<5000 (2/23/2011)(1040 - 5000)/(17 - 4)-304.615 ND<1040 (2/19/2018)ND<5000 (2/23/2011)(1040 - 5000)/(18 - 4)-282.857 ND<5000 (8/14/2018)ND<5000 (2/23/2011)(5000 - 5000)/(19 - 4)0 11500 (2/21/2012)7400 (8/24/2011)(11500 - 7400)/(6 - 5)4100 7800 (8/28/2012)7400 (8/24/2011)(7800 - 7400)/(7 - 5)200 10400 (2/19/2013)7400 (8/24/2011)(10400 - 7400)/(8 - 5)1000 ND<5000 (8/28/2013)7400 (8/24/2011)(5000 - 7400)/(9 - 5)-600 ND<5000 (2/24/2014)7400 (8/24/2011)(5000 - 7400)/(10 - 5)-480 12900 (8/5/2014)7400 (8/24/2011)(12900 - 7400)/(11 - 5)916.667 11200 (2/10/2015)7400 (8/24/2011)(11200 - 7400)/(12 - 5)542.857 7000 (8/25/2015)7400 (8/24/2011)(7000 - 7400)/(13 - 5)-50 6200 (2/25/2016)7400 (8/24/2011)(6200 - 7400)/(14 - 5)-133.333 ND<5000 (8/10/2016)7400 (8/24/2011)(5000 - 7400)/(15 - 5)-240 ND<5000 (2/16/2017)7400 (8/24/2011)(5000 - 7400)/(16 - 5)-218.182 ND<1040 (8/16/2017)7400 (8/24/2011)(1040 - 7400)/(17 - 5)-530 ND<1040 (2/19/2018)7400 (8/24/2011)(1040 - 7400)/(18 - 5)-489.231 ND<5000 (8/14/2018)7400 (8/24/2011)(5000 - 7400)/(19 - 5)-171.429 7800 (8/28/2012)11500 (2/21/2012)(7800 - 11500)/(7 - 6)-3700 10400 (2/19/2013)11500 (2/21/2012)(10400 - 11500)/(8 - 6)-550 ND<5000 (8/28/2013)11500 (2/21/2012)(5000 - 11500)/(9 - 6)-2166.67 ND<5000 (2/24/2014)11500 (2/21/2012)(5000 - 11500)/(10 - 6)-1625 12900 (8/5/2014)11500 (2/21/2012)(12900 - 11500)/(11 - 6)280 11200 (2/10/2015)11500 (2/21/2012)(11200 - 11500)/(12 - 6)-50 7000 (8/25/2015)11500 (2/21/2012)(7000 - 11500)/(13 - 6)-642.857 6200 (2/25/2016)11500 (2/21/2012)(6200 - 11500)/(14 - 6)-662.5 ND<5000 (8/10/2016)11500 (2/21/2012)(5000 - 11500)/(15 - 6)-722.222 ND<5000 (2/16/2017)11500 (2/21/2012)(5000 - 11500)/(16 - 6)-650 ND<1040 (8/16/2017)11500 (2/21/2012)(1040 - 11500)/(17 - 6)-950.909 ND<1040 (2/19/2018)11500 (2/21/2012)(1040 - 11500)/(18 - 6)-871.667 ND<5000 (8/14/2018)11500 (2/21/2012)(5000 - 11500)/(19 - 6)-500 10400 (2/19/2013)7800 (8/28/2012)(10400 - 7800)/(8 - 7)2600 ND<5000 (8/28/2013)7800 (8/28/2012)(5000 - 7800)/(9 - 7)-1400 ND<5000 (2/24/2014)7800 (8/28/2012)(5000 - 7800)/(10 - 7)-933.333 12900 (8/5/2014)7800 (8/28/2012)(12900 - 7800)/(11 - 7)1275 11200 (2/10/2015)7800 (8/28/2012)(11200 - 7800)/(12 - 7)680 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 37 7000 (8/25/2015)7800 (8/28/2012)(7000 - 7800)/(13 - 7)-133.333 6200 (2/25/2016)7800 (8/28/2012)(6200 - 7800)/(14 - 7)-228.571 ND<5000 (8/10/2016)7800 (8/28/2012)(5000 - 7800)/(15 - 7)-350 ND<5000 (2/16/2017)7800 (8/28/2012)(5000 - 7800)/(16 - 7)-311.111 ND<1040 (8/16/2017)7800 (8/28/2012)(1040 - 7800)/(17 - 7)-676 ND<1040 (2/19/2018)7800 (8/28/2012)(1040 - 7800)/(18 - 7)-614.545 ND<5000 (8/14/2018)7800 (8/28/2012)(5000 - 7800)/(19 - 7)-233.333 ND<5000 (8/28/2013)10400 (2/19/2013)(5000 - 10400)/(9 - 8)-5400 ND<5000 (2/24/2014)10400 (2/19/2013)(5000 - 10400)/(10 - 8)-2700 12900 (8/5/2014)10400 (2/19/2013)(12900 - 10400)/(11 - 8)833.333 11200 (2/10/2015)10400 (2/19/2013)(11200 - 10400)/(12 - 8)200 7000 (8/25/2015)10400 (2/19/2013)(7000 - 10400)/(13 - 8)-680 6200 (2/25/2016)10400 (2/19/2013)(6200 - 10400)/(14 - 8)-700 ND<5000 (8/10/2016)10400 (2/19/2013)(5000 - 10400)/(15 - 8)-771.429 ND<5000 (2/16/2017)10400 (2/19/2013)(5000 - 10400)/(16 - 8)-675 ND<1040 (8/16/2017)10400 (2/19/2013)(1040 - 10400)/(17 - 8)-1040 ND<1040 (2/19/2018)10400 (2/19/2013)(1040 - 10400)/(18 - 8)-936 ND<5000 (8/14/2018)10400 (2/19/2013)(5000 - 10400)/(19 - 8)-490.909 ND<5000 (2/24/2014)ND<5000 (8/28/2013)(5000 - 5000)/(10 - 9)0 12900 (8/5/2014)ND<5000 (8/28/2013)(12900 - 5000)/(11 - 9)3950 11200 (2/10/2015)ND<5000 (8/28/2013)(11200 - 5000)/(12 - 9)2066.67 7000 (8/25/2015)ND<5000 (8/28/2013)(7000 - 5000)/(13 - 9)500 6200 (2/25/2016)ND<5000 (8/28/2013)(6200 - 5000)/(14 - 9)240 ND<5000 (8/10/2016)ND<5000 (8/28/2013)(5000 - 5000)/(15 - 9)0 ND<5000 (2/16/2017)ND<5000 (8/28/2013)(5000 - 5000)/(16 - 9)0 ND<1040 (8/16/2017)ND<5000 (8/28/2013)(1040 - 5000)/(17 - 9)-495 ND<1040 (2/19/2018)ND<5000 (8/28/2013)(1040 - 5000)/(18 - 9)-440 ND<5000 (8/14/2018)ND<5000 (8/28/2013)(5000 - 5000)/(19 - 9)0 12900 (8/5/2014)ND<5000 (2/24/2014)(12900 - 5000)/(11 - 10)7900 11200 (2/10/2015)ND<5000 (2/24/2014)(11200 - 5000)/(12 - 10)3100 7000 (8/25/2015)ND<5000 (2/24/2014)(7000 - 5000)/(13 - 10)666.667 6200 (2/25/2016)ND<5000 (2/24/2014)(6200 - 5000)/(14 - 10)300 ND<5000 (8/10/2016)ND<5000 (2/24/2014)(5000 - 5000)/(15 - 10)0 ND<5000 (2/16/2017)ND<5000 (2/24/2014)(5000 - 5000)/(16 - 10)0 ND<1040 (8/16/2017)ND<5000 (2/24/2014)(1040 - 5000)/(17 - 10)-565.714 ND<1040 (2/19/2018)ND<5000 (2/24/2014)(1040 - 5000)/(18 - 10)-495 ND<5000 (8/14/2018)ND<5000 (2/24/2014)(5000 - 5000)/(19 - 10)0 11200 (2/10/2015)12900 (8/5/2014)(11200 - 12900)/(12 - 11)-1700 7000 (8/25/2015)12900 (8/5/2014)(7000 - 12900)/(13 - 11)-2950 6200 (2/25/2016)12900 (8/5/2014)(6200 - 12900)/(14 - 11)-2233.33 ND<5000 (8/10/2016)12900 (8/5/2014)(5000 - 12900)/(15 - 11)-1975 ND<5000 (2/16/2017)12900 (8/5/2014)(5000 - 12900)/(16 - 11)-1580 ND<1040 (8/16/2017)12900 (8/5/2014)(1040 - 12900)/(17 - 11)-1976.67 ND<1040 (2/19/2018)12900 (8/5/2014)(1040 - 12900)/(18 - 11)-1694.29 ND<5000 (8/14/2018)12900 (8/5/2014)(5000 - 12900)/(19 - 11)-987.5 7000 (8/25/2015)11200 (2/10/2015)(7000 - 11200)/(13 - 12)-4200 6200 (2/25/2016)11200 (2/10/2015)(6200 - 11200)/(14 - 12)-2500 ND<5000 (8/10/2016)11200 (2/10/2015)(5000 - 11200)/(15 - 12)-2066.67 ND<5000 (2/16/2017)11200 (2/10/2015)(5000 - 11200)/(16 - 12)-1550 ND<1040 (8/16/2017)11200 (2/10/2015)(1040 - 11200)/(17 - 12)-2032 ND<1040 (2/19/2018)11200 (2/10/2015)(1040 - 11200)/(18 - 12)-1693.33 ND<5000 (8/14/2018)11200 (2/10/2015)(5000 - 11200)/(19 - 12)-885.714 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 38 6200 (2/25/2016)7000 (8/25/2015)(6200 - 7000)/(14 - 13)-800 ND<5000 (8/10/2016)7000 (8/25/2015)(5000 - 7000)/(15 - 13)-1000 ND<5000 (2/16/2017)7000 (8/25/2015)(5000 - 7000)/(16 - 13)-666.667 ND<1040 (8/16/2017)7000 (8/25/2015)(1040 - 7000)/(17 - 13)-1490 ND<1040 (2/19/2018)7000 (8/25/2015)(1040 - 7000)/(18 - 13)-1192 ND<5000 (8/14/2018)7000 (8/25/2015)(5000 - 7000)/(19 - 13)-333.333 ND<5000 (8/10/2016)6200 (2/25/2016)(5000 - 6200)/(15 - 14)-1200 ND<5000 (2/16/2017)6200 (2/25/2016)(5000 - 6200)/(16 - 14)-600 ND<1040 (8/16/2017)6200 (2/25/2016)(1040 - 6200)/(17 - 14)-1720 ND<1040 (2/19/2018)6200 (2/25/2016)(1040 - 6200)/(18 - 14)-1290 ND<5000 (8/14/2018)6200 (2/25/2016)(5000 - 6200)/(19 - 14)-240 ND<5000 (2/16/2017)ND<5000 (8/10/2016)(5000 - 5000)/(16 - 15)0 ND<1040 (8/16/2017)ND<5000 (8/10/2016)(1040 - 5000)/(17 - 15)-1980 ND<1040 (2/19/2018)ND<5000 (8/10/2016)(1040 - 5000)/(18 - 15)-1320 ND<5000 (8/14/2018)ND<5000 (8/10/2016)(5000 - 5000)/(19 - 15)0 ND<1040 (8/16/2017)ND<5000 (2/16/2017)(1040 - 5000)/(17 - 16)-3960 ND<1040 (2/19/2018)ND<5000 (2/16/2017)(1040 - 5000)/(18 - 16)-1980 ND<5000 (8/14/2018)ND<5000 (2/16/2017)(5000 - 5000)/(19 - 16)0 ND<1040 (2/19/2018)ND<1040 (8/16/2017)(1040 - 1040)/(18 - 17)0 ND<5000 (8/14/2018)ND<1040 (8/16/2017)(5000 - 1040)/(19 - 17)1980 ND<5000 (8/14/2018)ND<1040 (2/19/2018)(5000 - 1040)/(19 - 18)3960 Number of Q values = 171 Ordered Q Values n Q 1 -5400 2 -5400 3 -4200 4 -3960 5 -3700 6 -2950 7 -2700 8 -2700 9 -2500 10 -2233.33 11 -2166.67 12 -2066.67 13 -2032 14 -1980 15 -1980 16 -1976.67 17 -1975 18 -1720 19 -1700 20 -1694.29 21 -1693.33 22 -1625 23 -1580 24 -1550 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 39 25 -1490 26 -1400 27 -1320 28 -1290 29 -1200 30 -1192 31 -1040 32 -1000 33 -1000 34 -987.5 35 -950.909 36 -936 37 -933.333 38 -885.714 39 -871.667 40 -800 41 -771.429 42 -771.429 43 -722.222 44 -700 45 -680 46 -676 47 -675 48 -675 49 -666.667 50 -662.5 51 -650 52 -642.857 53 -624 54 -614.545 55 -600 56 -600 57 -585 58 -565.714 59 -550 60 -530 61 -520 62 -500 63 -495 64 -495 65 -490.909 66 -489.231 67 -480 68 -440 69 -415.385 70 -385.714 71 -350 72 -350 73 -333.333 74 -317.647 75 -311.111 76 -309.091 77 -304.615 78 -282.857 79 -282.857 80 -264 81 -247.5 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 40 82 -240 83 -240 84 -233.333 85 -232.941 86 -228.571 87 -218.182 88 -171.429 89 -133.333 90 -133.333 91 -50 92 -50 93 0 94 0 95 0 96 0 97 0 98 0 99 0 100 0 101 0 102 0 103 0 104 0 105 0 106 0 107 0 108 0 109 0 110 0 111 0 112 0 113 0 114 0 115 0 116 0 117 0 118 0 119 0 120 0 121 0 122 0 123 80 124 92.3077 125 109.091 126 120 127 166.667 128 200 129 200 130 200 131 222.222 132 240 133 275 134 277.778 135 280 136 300 137 466.667 138 500 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 41 139 542.857 140 563.636 141 600 142 666.667 143 680 144 688.889 145 700 146 771.429 147 775 148 790 149 833.333 150 916.667 151 933.333 152 987.5 153 1000 154 1080 155 1128.57 156 1200 157 1275 158 1300 159 1350 160 1980 161 2066.67 162 2166.67 163 2400 164 2600 165 3100 166 3250 167 3950 168 3960 169 4100 170 5400 171 7900 Sen's Estimator (Median Q) is -228.571 Tied Group Value Members 1 5000 8 2 10400 2 3 1040 2 Time Period Observations 2/18/2008 1 8/20/2009 1 8/24/2010 1 2/23/2011 1 8/24/2011 1 2/21/2012 1 8/28/2012 1 2/19/2013 1 8/28/2013 1 2/24/2014 1 8/5/2014 1 2/10/2015 1 8/25/2015 1 2/25/2016 1 8/10/2016 1 2/16/2017 1 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 42 8/16/2017 1 2/19/2018 1 8/14/2018 1 There are 0 time periods with multiple data A = 1212 B = 0 C = 336 D = 0 E = 60 F = 0 a = 14706 b = 52326 c = 684 Group Variance = 749.667 For 90% confidence interval (two-tailed), Z at (1-0.9)/2 = 1.64485 C = 45.0361 M1 = (171 - 45.0361)/2.0 = 62.9819 M2 = (171 + 45.0361)/2.0 + 1 = 109.018 Lower limit is -495 = Q(63) Upper limit is 0 = Q(109) -495 < 0 < 0 indicating no trend in data. DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 43 Sen's Slope Analysis Parameter: Sulfate Location: MW-17 Original Data (Not Transformed) Non-Detects Replaced with Detection Limit 90% Confidence Level Xj Xk (Xj - Xk)/(j-k)Q 11900 (8/20/2009)ND<5000 (2/18/2008)(11900 - 5000)/(2 - 1)6900 ND<5000 (8/24/2010)ND<5000 (2/18/2008)(5000 - 5000)/(3 - 1)0 12600 (2/23/2011)ND<5000 (2/18/2008)(12600 - 5000)/(4 - 1)2533.33 ND<5000 (8/24/2011)ND<5000 (2/18/2008)(5000 - 5000)/(5 - 1)0 5700 (2/21/2012)ND<5000 (2/18/2008)(5700 - 5000)/(6 - 1)140 8000 (8/28/2012)ND<5000 (2/18/2008)(8000 - 5000)/(7 - 1)500 ND<5000 (2/19/2013)ND<5000 (2/18/2008)(5000 - 5000)/(8 - 1)0 5300 (8/28/2013)ND<5000 (2/18/2008)(5300 - 5000)/(9 - 1)37.5 ND<5000 (2/24/2014)ND<5000 (2/18/2008)(5000 - 5000)/(10 - 1)0 ND<5000 (8/5/2014)ND<5000 (2/18/2008)(5000 - 5000)/(11 - 1)0 11000 (2/10/2015)ND<5000 (2/18/2008)(11000 - 5000)/(12 - 1)545.455 5000 (8/25/2015)ND<5000 (2/18/2008)(5000 - 5000)/(13 - 1)0 6500 (2/25/2016)ND<5000 (2/18/2008)(6500 - 5000)/(14 - 1)115.385 ND<5000 (8/10/2016)ND<5000 (2/18/2008)(5000 - 5000)/(15 - 1)0 ND<5000 (2/16/2017)ND<5000 (2/18/2008)(5000 - 5000)/(16 - 1)0 7000 (8/16/2017)ND<5000 (2/18/2008)(7000 - 5000)/(17 - 1)125 ND<1040 (2/19/2018)ND<5000 (2/18/2008)(1040 - 5000)/(18 - 1)-232.941 ND<5000 (8/14/2018)ND<5000 (2/18/2008)(5000 - 5000)/(19 - 1)0 ND<5000 (8/24/2010)11900 (8/20/2009)(5000 - 11900)/(3 - 2)-6900 12600 (2/23/2011)11900 (8/20/2009)(12600 - 11900)/(4 - 2)350 ND<5000 (8/24/2011)11900 (8/20/2009)(5000 - 11900)/(5 - 2)-2300 5700 (2/21/2012)11900 (8/20/2009)(5700 - 11900)/(6 - 2)-1550 8000 (8/28/2012)11900 (8/20/2009)(8000 - 11900)/(7 - 2)-780 ND<5000 (2/19/2013)11900 (8/20/2009)(5000 - 11900)/(8 - 2)-1150 5300 (8/28/2013)11900 (8/20/2009)(5300 - 11900)/(9 - 2)-942.857 ND<5000 (2/24/2014)11900 (8/20/2009)(5000 - 11900)/(10 - 2)-862.5 ND<5000 (8/5/2014)11900 (8/20/2009)(5000 - 11900)/(11 - 2)-766.667 11000 (2/10/2015)11900 (8/20/2009)(11000 - 11900)/(12 - 2)-90 5000 (8/25/2015)11900 (8/20/2009)(5000 - 11900)/(13 - 2)-627.273 6500 (2/25/2016)11900 (8/20/2009)(6500 - 11900)/(14 - 2)-450 ND<5000 (8/10/2016)11900 (8/20/2009)(5000 - 11900)/(15 - 2)-530.769 ND<5000 (2/16/2017)11900 (8/20/2009)(5000 - 11900)/(16 - 2)-492.857 7000 (8/16/2017)11900 (8/20/2009)(7000 - 11900)/(17 - 2)-326.667 ND<1040 (2/19/2018)11900 (8/20/2009)(1040 - 11900)/(18 - 2)-678.75 ND<5000 (8/14/2018)11900 (8/20/2009)(5000 - 11900)/(19 - 2)-405.882 12600 (2/23/2011)ND<5000 (8/24/2010)(12600 - 5000)/(4 - 3)7600 ND<5000 (8/24/2011)ND<5000 (8/24/2010)(5000 - 5000)/(5 - 3)0 5700 (2/21/2012)ND<5000 (8/24/2010)(5700 - 5000)/(6 - 3)233.333 8000 (8/28/2012)ND<5000 (8/24/2010)(8000 - 5000)/(7 - 3)750 ND<5000 (2/19/2013)ND<5000 (8/24/2010)(5000 - 5000)/(8 - 3)0 5300 (8/28/2013)ND<5000 (8/24/2010)(5300 - 5000)/(9 - 3)50 ND<5000 (2/24/2014)ND<5000 (8/24/2010)(5000 - 5000)/(10 - 3)0 ND<5000 (8/5/2014)ND<5000 (8/24/2010)(5000 - 5000)/(11 - 3)0 11000 (2/10/2015)ND<5000 (8/24/2010)(11000 - 5000)/(12 - 3)666.667 5000 (8/25/2015)ND<5000 (8/24/2010)(5000 - 5000)/(13 - 3)0 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 44 6500 (2/25/2016)ND<5000 (8/24/2010)(6500 - 5000)/(14 - 3)136.364 ND<5000 (8/10/2016)ND<5000 (8/24/2010)(5000 - 5000)/(15 - 3)0 ND<5000 (2/16/2017)ND<5000 (8/24/2010)(5000 - 5000)/(16 - 3)0 7000 (8/16/2017)ND<5000 (8/24/2010)(7000 - 5000)/(17 - 3)142.857 ND<1040 (2/19/2018)ND<5000 (8/24/2010)(1040 - 5000)/(18 - 3)-264 ND<5000 (8/14/2018)ND<5000 (8/24/2010)(5000 - 5000)/(19 - 3)0 ND<5000 (8/24/2011)12600 (2/23/2011)(5000 - 12600)/(5 - 4)-7600 5700 (2/21/2012)12600 (2/23/2011)(5700 - 12600)/(6 - 4)-3450 8000 (8/28/2012)12600 (2/23/2011)(8000 - 12600)/(7 - 4)-1533.33 ND<5000 (2/19/2013)12600 (2/23/2011)(5000 - 12600)/(8 - 4)-1900 5300 (8/28/2013)12600 (2/23/2011)(5300 - 12600)/(9 - 4)-1460 ND<5000 (2/24/2014)12600 (2/23/2011)(5000 - 12600)/(10 - 4)-1266.67 ND<5000 (8/5/2014)12600 (2/23/2011)(5000 - 12600)/(11 - 4)-1085.71 11000 (2/10/2015)12600 (2/23/2011)(11000 - 12600)/(12 - 4)-200 5000 (8/25/2015)12600 (2/23/2011)(5000 - 12600)/(13 - 4)-844.444 6500 (2/25/2016)12600 (2/23/2011)(6500 - 12600)/(14 - 4)-610 ND<5000 (8/10/2016)12600 (2/23/2011)(5000 - 12600)/(15 - 4)-690.909 ND<5000 (2/16/2017)12600 (2/23/2011)(5000 - 12600)/(16 - 4)-633.333 7000 (8/16/2017)12600 (2/23/2011)(7000 - 12600)/(17 - 4)-430.769 ND<1040 (2/19/2018)12600 (2/23/2011)(1040 - 12600)/(18 - 4)-825.714 ND<5000 (8/14/2018)12600 (2/23/2011)(5000 - 12600)/(19 - 4)-506.667 5700 (2/21/2012)ND<5000 (8/24/2011)(5700 - 5000)/(6 - 5)700 8000 (8/28/2012)ND<5000 (8/24/2011)(8000 - 5000)/(7 - 5)1500 ND<5000 (2/19/2013)ND<5000 (8/24/2011)(5000 - 5000)/(8 - 5)0 5300 (8/28/2013)ND<5000 (8/24/2011)(5300 - 5000)/(9 - 5)75 ND<5000 (2/24/2014)ND<5000 (8/24/2011)(5000 - 5000)/(10 - 5)0 ND<5000 (8/5/2014)ND<5000 (8/24/2011)(5000 - 5000)/(11 - 5)0 11000 (2/10/2015)ND<5000 (8/24/2011)(11000 - 5000)/(12 - 5)857.143 5000 (8/25/2015)ND<5000 (8/24/2011)(5000 - 5000)/(13 - 5)0 6500 (2/25/2016)ND<5000 (8/24/2011)(6500 - 5000)/(14 - 5)166.667 ND<5000 (8/10/2016)ND<5000 (8/24/2011)(5000 - 5000)/(15 - 5)0 ND<5000 (2/16/2017)ND<5000 (8/24/2011)(5000 - 5000)/(16 - 5)0 7000 (8/16/2017)ND<5000 (8/24/2011)(7000 - 5000)/(17 - 5)166.667 ND<1040 (2/19/2018)ND<5000 (8/24/2011)(1040 - 5000)/(18 - 5)-304.615 ND<5000 (8/14/2018)ND<5000 (8/24/2011)(5000 - 5000)/(19 - 5)0 8000 (8/28/2012)5700 (2/21/2012)(8000 - 5700)/(7 - 6)2300 ND<5000 (2/19/2013)5700 (2/21/2012)(5000 - 5700)/(8 - 6)-350 5300 (8/28/2013)5700 (2/21/2012)(5300 - 5700)/(9 - 6)-133.333 ND<5000 (2/24/2014)5700 (2/21/2012)(5000 - 5700)/(10 - 6)-175 ND<5000 (8/5/2014)5700 (2/21/2012)(5000 - 5700)/(11 - 6)-140 11000 (2/10/2015)5700 (2/21/2012)(11000 - 5700)/(12 - 6)883.333 5000 (8/25/2015)5700 (2/21/2012)(5000 - 5700)/(13 - 6)-100 6500 (2/25/2016)5700 (2/21/2012)(6500 - 5700)/(14 - 6)100 ND<5000 (8/10/2016)5700 (2/21/2012)(5000 - 5700)/(15 - 6)-77.7778 ND<5000 (2/16/2017)5700 (2/21/2012)(5000 - 5700)/(16 - 6)-70 7000 (8/16/2017)5700 (2/21/2012)(7000 - 5700)/(17 - 6)118.182 ND<1040 (2/19/2018)5700 (2/21/2012)(1040 - 5700)/(18 - 6)-388.333 ND<5000 (8/14/2018)5700 (2/21/2012)(5000 - 5700)/(19 - 6)-53.8462 ND<5000 (2/19/2013)8000 (8/28/2012)(5000 - 8000)/(8 - 7)-3000 5300 (8/28/2013)8000 (8/28/2012)(5300 - 8000)/(9 - 7)-1350 ND<5000 (2/24/2014)8000 (8/28/2012)(5000 - 8000)/(10 - 7)-1000 ND<5000 (8/5/2014)8000 (8/28/2012)(5000 - 8000)/(11 - 7)-750 11000 (2/10/2015)8000 (8/28/2012)(11000 - 8000)/(12 - 7)600 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 45 5000 (8/25/2015)8000 (8/28/2012)(5000 - 8000)/(13 - 7)-500 6500 (2/25/2016)8000 (8/28/2012)(6500 - 8000)/(14 - 7)-214.286 ND<5000 (8/10/2016)8000 (8/28/2012)(5000 - 8000)/(15 - 7)-375 ND<5000 (2/16/2017)8000 (8/28/2012)(5000 - 8000)/(16 - 7)-333.333 7000 (8/16/2017)8000 (8/28/2012)(7000 - 8000)/(17 - 7)-100 ND<1040 (2/19/2018)8000 (8/28/2012)(1040 - 8000)/(18 - 7)-632.727 ND<5000 (8/14/2018)8000 (8/28/2012)(5000 - 8000)/(19 - 7)-250 5300 (8/28/2013)ND<5000 (2/19/2013)(5300 - 5000)/(9 - 8)300 ND<5000 (2/24/2014)ND<5000 (2/19/2013)(5000 - 5000)/(10 - 8)0 ND<5000 (8/5/2014)ND<5000 (2/19/2013)(5000 - 5000)/(11 - 8)0 11000 (2/10/2015)ND<5000 (2/19/2013)(11000 - 5000)/(12 - 8)1500 5000 (8/25/2015)ND<5000 (2/19/2013)(5000 - 5000)/(13 - 8)0 6500 (2/25/2016)ND<5000 (2/19/2013)(6500 - 5000)/(14 - 8)250 ND<5000 (8/10/2016)ND<5000 (2/19/2013)(5000 - 5000)/(15 - 8)0 ND<5000 (2/16/2017)ND<5000 (2/19/2013)(5000 - 5000)/(16 - 8)0 7000 (8/16/2017)ND<5000 (2/19/2013)(7000 - 5000)/(17 - 8)222.222 ND<1040 (2/19/2018)ND<5000 (2/19/2013)(1040 - 5000)/(18 - 8)-396 ND<5000 (8/14/2018)ND<5000 (2/19/2013)(5000 - 5000)/(19 - 8)0 ND<5000 (2/24/2014)5300 (8/28/2013)(5000 - 5300)/(10 - 9)-300 ND<5000 (8/5/2014)5300 (8/28/2013)(5000 - 5300)/(11 - 9)-150 11000 (2/10/2015)5300 (8/28/2013)(11000 - 5300)/(12 - 9)1900 5000 (8/25/2015)5300 (8/28/2013)(5000 - 5300)/(13 - 9)-75 6500 (2/25/2016)5300 (8/28/2013)(6500 - 5300)/(14 - 9)240 ND<5000 (8/10/2016)5300 (8/28/2013)(5000 - 5300)/(15 - 9)-50 ND<5000 (2/16/2017)5300 (8/28/2013)(5000 - 5300)/(16 - 9)-42.8571 7000 (8/16/2017)5300 (8/28/2013)(7000 - 5300)/(17 - 9)212.5 ND<1040 (2/19/2018)5300 (8/28/2013)(1040 - 5300)/(18 - 9)-473.333 ND<5000 (8/14/2018)5300 (8/28/2013)(5000 - 5300)/(19 - 9)-30 ND<5000 (8/5/2014)ND<5000 (2/24/2014)(5000 - 5000)/(11 - 10)0 11000 (2/10/2015)ND<5000 (2/24/2014)(11000 - 5000)/(12 - 10)3000 5000 (8/25/2015)ND<5000 (2/24/2014)(5000 - 5000)/(13 - 10)0 6500 (2/25/2016)ND<5000 (2/24/2014)(6500 - 5000)/(14 - 10)375 ND<5000 (8/10/2016)ND<5000 (2/24/2014)(5000 - 5000)/(15 - 10)0 ND<5000 (2/16/2017)ND<5000 (2/24/2014)(5000 - 5000)/(16 - 10)0 7000 (8/16/2017)ND<5000 (2/24/2014)(7000 - 5000)/(17 - 10)285.714 ND<1040 (2/19/2018)ND<5000 (2/24/2014)(1040 - 5000)/(18 - 10)-495 ND<5000 (8/14/2018)ND<5000 (2/24/2014)(5000 - 5000)/(19 - 10)0 11000 (2/10/2015)ND<5000 (8/5/2014)(11000 - 5000)/(12 - 11)6000 5000 (8/25/2015)ND<5000 (8/5/2014)(5000 - 5000)/(13 - 11)0 6500 (2/25/2016)ND<5000 (8/5/2014)(6500 - 5000)/(14 - 11)500 ND<5000 (8/10/2016)ND<5000 (8/5/2014)(5000 - 5000)/(15 - 11)0 ND<5000 (2/16/2017)ND<5000 (8/5/2014)(5000 - 5000)/(16 - 11)0 7000 (8/16/2017)ND<5000 (8/5/2014)(7000 - 5000)/(17 - 11)333.333 ND<1040 (2/19/2018)ND<5000 (8/5/2014)(1040 - 5000)/(18 - 11)-565.714 ND<5000 (8/14/2018)ND<5000 (8/5/2014)(5000 - 5000)/(19 - 11)0 5000 (8/25/2015)11000 (2/10/2015)(5000 - 11000)/(13 - 12)-6000 6500 (2/25/2016)11000 (2/10/2015)(6500 - 11000)/(14 - 12)-2250 ND<5000 (8/10/2016)11000 (2/10/2015)(5000 - 11000)/(15 - 12)-2000 ND<5000 (2/16/2017)11000 (2/10/2015)(5000 - 11000)/(16 - 12)-1500 7000 (8/16/2017)11000 (2/10/2015)(7000 - 11000)/(17 - 12)-800 ND<1040 (2/19/2018)11000 (2/10/2015)(1040 - 11000)/(18 - 12)-1660 ND<5000 (8/14/2018)11000 (2/10/2015)(5000 - 11000)/(19 - 12)-857.143 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 46 6500 (2/25/2016)5000 (8/25/2015)(6500 - 5000)/(14 - 13)1500 ND<5000 (8/10/2016)5000 (8/25/2015)(5000 - 5000)/(15 - 13)0 ND<5000 (2/16/2017)5000 (8/25/2015)(5000 - 5000)/(16 - 13)0 7000 (8/16/2017)5000 (8/25/2015)(7000 - 5000)/(17 - 13)500 ND<1040 (2/19/2018)5000 (8/25/2015)(1040 - 5000)/(18 - 13)-792 ND<5000 (8/14/2018)5000 (8/25/2015)(5000 - 5000)/(19 - 13)0 ND<5000 (8/10/2016)6500 (2/25/2016)(5000 - 6500)/(15 - 14)-1500 ND<5000 (2/16/2017)6500 (2/25/2016)(5000 - 6500)/(16 - 14)-750 7000 (8/16/2017)6500 (2/25/2016)(7000 - 6500)/(17 - 14)166.667 ND<1040 (2/19/2018)6500 (2/25/2016)(1040 - 6500)/(18 - 14)-1365 ND<5000 (8/14/2018)6500 (2/25/2016)(5000 - 6500)/(19 - 14)-300 ND<5000 (2/16/2017)ND<5000 (8/10/2016)(5000 - 5000)/(16 - 15)0 7000 (8/16/2017)ND<5000 (8/10/2016)(7000 - 5000)/(17 - 15)1000 ND<1040 (2/19/2018)ND<5000 (8/10/2016)(1040 - 5000)/(18 - 15)-1320 ND<5000 (8/14/2018)ND<5000 (8/10/2016)(5000 - 5000)/(19 - 15)0 7000 (8/16/2017)ND<5000 (2/16/2017)(7000 - 5000)/(17 - 16)2000 ND<1040 (2/19/2018)ND<5000 (2/16/2017)(1040 - 5000)/(18 - 16)-1980 ND<5000 (8/14/2018)ND<5000 (2/16/2017)(5000 - 5000)/(19 - 16)0 ND<1040 (2/19/2018)7000 (8/16/2017)(1040 - 7000)/(18 - 17)-5960 ND<5000 (8/14/2018)7000 (8/16/2017)(5000 - 7000)/(19 - 17)-1000 ND<5000 (8/14/2018)ND<1040 (2/19/2018)(5000 - 1040)/(19 - 18)3960 Number of Q values = 171 Ordered Q Values n Q 1 -7600 2 -6900 3 -6000 4 -5960 5 -3450 6 -3000 7 -2300 8 -2250 9 -2000 10 -1980 11 -1900 12 -1660 13 -1550 14 -1533.33 15 -1500 16 -1500 17 -1460 18 -1365 19 -1350 20 -1320 21 -1266.67 22 -1150 23 -1085.71 24 -1000 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 47 25 -1000 26 -942.857 27 -862.5 28 -857.143 29 -844.444 30 -825.714 31 -800 32 -792 33 -780 34 -766.667 35 -750 36 -750 37 -690.909 38 -678.75 39 -633.333 40 -632.727 41 -627.273 42 -610 43 -565.714 44 -530.769 45 -506.667 46 -500 47 -495 48 -492.857 49 -473.333 50 -450 51 -430.769 52 -405.882 53 -396 54 -388.333 55 -375 56 -350 57 -333.333 58 -326.667 59 -304.615 60 -300 61 -300 62 -264 63 -250 64 -232.941 65 -214.286 66 -200 67 -175 68 -150 69 -140 70 -133.333 71 -100 72 -100 73 -90 74 -77.7778 75 -75 76 -70 77 -53.8462 78 -50 79 -42.8571 80 -30 81 0 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 48 82 0 83 0 84 0 85 0 86 0 87 0 88 0 89 0 90 0 91 0 92 0 93 0 94 0 95 0 96 0 97 0 98 0 99 0 100 0 101 0 102 0 103 0 104 0 105 0 106 0 107 0 108 0 109 0 110 0 111 0 112 0 113 0 114 0 115 0 116 0 117 0 118 0 119 0 120 0 121 0 122 0 123 0 124 0 125 0 126 37.5 127 50 128 75 129 100 130 115.385 131 118.182 132 125 133 136.364 134 140 135 142.857 136 166.667 137 166.667 138 166.667 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 49 139 212.5 140 222.222 141 233.333 142 240 143 250 144 285.714 145 300 146 333.333 147 350 148 375 149 500 150 500 151 500 152 545.455 153 600 154 666.667 155 700 156 750 157 857.143 158 883.333 159 1000 160 1500 161 1500 162 1500 163 1900 164 2000 165 2300 166 2533.33 167 3000 168 3960 169 6000 170 6900 171 7600 Sen's Estimator (Median Q) is 0 Tied Group Value Members 1 5000 10 Time Period Observations 2/18/2008 1 8/20/2009 1 8/24/2010 1 2/23/2011 1 8/24/2011 1 2/21/2012 1 8/28/2012 1 2/19/2013 1 8/28/2013 1 2/24/2014 1 8/5/2014 1 2/10/2015 1 8/25/2015 1 2/25/2016 1 8/10/2016 1 2/16/2017 1 8/16/2017 1 2/19/2018 1 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 50 8/14/2018 1 There are 0 time periods with multiple data A = 2250 B = 0 C = 720 D = 0 E = 90 F = 0 a = 14706 b = 52326 c = 684 Group Variance = 692 For 90% confidence interval (two-tailed), Z at (1-0.9)/2 = 1.64485 C = 43.2693 M1 = (171 - 43.2693)/2.0 = 63.8653 M2 = (171 + 43.2693)/2.0 + 1 = 108.135 Lower limit is -232.941 = Q(64) Upper limit is 0 = Q(108) -232.941 < 0 < 0 indicating no trend in data. DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 51 Sulfate Multi-Well Time-Series Graph Sample DateConcentration (ppb)0 5000 10000 15000 20000 25000 30000 35000 40000 MW- 8 MW- 9 MW-10 MW-11 MW-12 MW-172/18/20088/18/20092/16/20118/16/20122/14/20148/15/20152/12/20178/14/2018DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 1 Concentrations (ppb) Parameter: Thallium Original Data (Not Transformed) Non-Detects Replaced with Detection Limit Total Measurements: 48 Total Non-Detect: 28 Percent Non-Detects: 58.3333% Total Background Measurements: 8 There is 1 background location Loc.Meas.ND Date Conc.Original MW- 8 8 4 (50%)10/24/2016 0.08 0.08 12/1/2016 ND<0.05 ND<0.05 1/4/2017 ND<0.05 ND<0.05 2/16/2017 ND<0.05 ND<0.05 4/20/2017 0.11 0.11 5/22/2017 0.11 0.11 6/29/2017 0.12 0.12 8/16/2017 ND<0.08 ND<0.08 There are 5 compliance locations Loc.Meas.ND Date Conc.Original MW- 9 8 4 (50%)10/24/2016 0.12 0.12 12/1/2016 ND<0.05 ND<0.05 1/4/2017 ND<0.05 ND<0.05 2/16/2017 ND<0.05 ND<0.05 4/20/2017 ND<0.08 ND<0.08 5/22/2017 0.14 0.14 6/29/2017 0.25 0.25 8/16/2017 0.28 0.28 MW-10 8 5 (62.5%)10/24/2016 0.15 0.15 12/1/2016 ND<0.05 ND<0.05 1/4/2017 ND<0.05 ND<0.05 2/16/2017 ND<0.05 ND<0.05 4/20/2017 ND<0.08 ND<0.08 5/22/2017 0.08 0.08 6/29/2017 ND<0.08 ND<0.08 8/16/2017 0.15 0.15 MW-11 8 6 (75%)10/24/2016 ND<0.05 ND<0.05 12/1/2016 ND<0.05 ND<0.05 1/4/2017 ND<0.05 ND<0.05 2/16/2017 ND<0.05 ND<0.05 4/20/2017 ND<0.08 ND<0.08 5/22/2017 ND<0.08 ND<0.08 6/29/2017 0.11 0.11 8/16/2017 0.17 0.17 MW-12 8 4 (50%)10/24/2016 ND<0.05 ND<0.05 12/1/2016 0.08 0.08 1/4/2017 ND<0.05 ND<0.05 2/16/2017 0.2 0.2 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 2 4/20/2017 ND<0.08 ND<0.08 5/22/2017 0.11 0.11 6/29/2017 0.15 0.15 8/16/2017 ND<0.08 ND<0.08 MW-17 8 5 (62.5%)10/24/2016 0.12 0.12 12/1/2016 ND<0.05 ND<0.05 1/4/2017 ND<0.05 ND<0.05 2/16/2017 ND<0.05 ND<0.05 4/20/2017 ND<0.08 ND<0.08 5/22/2017 ND<0.08 ND<0.08 6/29/2017 0.18 0.18 8/16/2017 0.11 0.11 There are 0 unused locations Loc.Meas.ND Date Conc.Original DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 3 Non-Parametric Tolerance Interval Parameter: Thallium Original Data (Not Transformed) Non-Detects Replaced with Detection Limit Total Percent Non-Detects = 58.3333% Background measurements (n) = 8 Maximum Background Concentration = 0.12 Minimum Coverage = 68.8% Average Coverage = 88.8889% Location Date Value Significant MW- 9 10/24/2016 0.12 FALSE MW- 9 12/1/2016 ND<0.05 FALSE MW- 9 1/4/2017 ND<0.05 FALSE MW- 9 2/16/2017 ND<0.05 FALSE MW- 9 4/20/2017 ND<0.08 FALSE MW- 9 5/22/2017 0.14 TRUE MW- 9 6/29/2017 0.25 TRUE MW- 9 8/16/2017 0.28 TRUE MW-10 10/24/2016 0.15 TRUE MW-10 12/1/2016 ND<0.05 FALSE MW-10 1/4/2017 ND<0.05 FALSE MW-10 2/16/2017 ND<0.05 FALSE MW-10 4/20/2017 ND<0.08 FALSE MW-10 5/22/2017 0.08 FALSE MW-10 6/29/2017 ND<0.08 FALSE MW-10 8/16/2017 0.15 TRUE MW-11 10/24/2016 ND<0.05 FALSE MW-11 12/1/2016 ND<0.05 FALSE MW-11 1/4/2017 ND<0.05 FALSE MW-11 2/16/2017 ND<0.05 FALSE MW-11 4/20/2017 ND<0.08 FALSE MW-11 5/22/2017 ND<0.08 FALSE MW-11 6/29/2017 0.11 FALSE MW-11 8/16/2017 0.17 TRUE MW-12 10/24/2016 ND<0.05 FALSE MW-12 12/1/2016 0.08 FALSE MW-12 1/4/2017 ND<0.05 FALSE MW-12 2/16/2017 0.2 TRUE MW-12 4/20/2017 ND<0.08 FALSE MW-12 5/22/2017 0.11 FALSE MW-12 6/29/2017 0.15 TRUE MW-12 8/16/2017 ND<0.08 FALSE MW-17 10/24/2016 0.12 FALSE MW-17 12/1/2016 ND<0.05 FALSE MW-17 1/4/2017 ND<0.05 FALSE DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 4 MW-17 2/16/2017 ND<0.05 FALSE MW-17 4/20/2017 ND<0.08 FALSE MW-17 5/22/2017 ND<0.08 FALSE MW-17 6/29/2017 0.18 TRUE MW-17 8/16/2017 0.11 FALSE DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 5 Sen's Slope Analysis Parameter: Thallium Location: MW- 9 Original Data (Not Transformed) Non-Detects Replaced with Detection Limit 90% Confidence Level Xj Xk (Xj - Xk)/(j-k)Q ND<0.05 (12/1/2016)0.12 (10/24/2016)(0.05 - 0.12)/(2 - 1)-0.07 ND<0.05 (1/4/2017)0.12 (10/24/2016)(0.05 - 0.12)/(3 - 1)-0.035 ND<0.05 (2/16/2017)0.12 (10/24/2016)(0.05 - 0.12)/(4 - 1)-0.0233333 ND<0.08 (4/20/2017)0.12 (10/24/2016)(0.08 - 0.12)/(5 - 1)-0.01 0.14 (5/22/2017)0.12 (10/24/2016)(0.14 - 0.12)/(6 - 1)0.004 0.25 (6/29/2017)0.12 (10/24/2016)(0.25 - 0.12)/(7 - 1)0.0216667 0.28 (8/16/2017)0.12 (10/24/2016)(0.28 - 0.12)/(8 - 1)0.0228571 ND<0.05 (1/4/2017)ND<0.05 (12/1/2016)(0.05 - 0.05)/(3 - 2)0 ND<0.05 (2/16/2017)ND<0.05 (12/1/2016)(0.05 - 0.05)/(4 - 2)0 ND<0.08 (4/20/2017)ND<0.05 (12/1/2016)(0.08 - 0.05)/(5 - 2)0.01 0.14 (5/22/2017)ND<0.05 (12/1/2016)(0.14 - 0.05)/(6 - 2)0.0225 0.25 (6/29/2017)ND<0.05 (12/1/2016)(0.25 - 0.05)/(7 - 2)0.04 0.28 (8/16/2017)ND<0.05 (12/1/2016)(0.28 - 0.05)/(8 - 2)0.0383333 ND<0.05 (2/16/2017)ND<0.05 (1/4/2017)(0.05 - 0.05)/(4 - 3)0 ND<0.08 (4/20/2017)ND<0.05 (1/4/2017)(0.08 - 0.05)/(5 - 3)0.015 0.14 (5/22/2017)ND<0.05 (1/4/2017)(0.14 - 0.05)/(6 - 3)0.03 0.25 (6/29/2017)ND<0.05 (1/4/2017)(0.25 - 0.05)/(7 - 3)0.05 0.28 (8/16/2017)ND<0.05 (1/4/2017)(0.28 - 0.05)/(8 - 3)0.046 ND<0.08 (4/20/2017)ND<0.05 (2/16/2017)(0.08 - 0.05)/(5 - 4)0.03 0.14 (5/22/2017)ND<0.05 (2/16/2017)(0.14 - 0.05)/(6 - 4)0.045 0.25 (6/29/2017)ND<0.05 (2/16/2017)(0.25 - 0.05)/(7 - 4)0.0666667 0.28 (8/16/2017)ND<0.05 (2/16/2017)(0.28 - 0.05)/(8 - 4)0.0575 0.14 (5/22/2017)ND<0.08 (4/20/2017)(0.14 - 0.08)/(6 - 5)0.06 0.25 (6/29/2017)ND<0.08 (4/20/2017)(0.25 - 0.08)/(7 - 5)0.085 0.28 (8/16/2017)ND<0.08 (4/20/2017)(0.28 - 0.08)/(8 - 5)0.0666667 0.25 (6/29/2017)0.14 (5/22/2017)(0.25 - 0.14)/(7 - 6)0.11 0.28 (8/16/2017)0.14 (5/22/2017)(0.28 - 0.14)/(8 - 6)0.07 0.28 (8/16/2017)0.25 (6/29/2017)(0.28 - 0.25)/(8 - 7)0.03 Number of Q values = 28 Ordered Q Values n Q 1 -0.07 2 -0.035 3 -0.0233333 4 -0.01 5 0 6 0 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 6 7 0 8 0.004 9 0.01 10 0.015 11 0.0216667 12 0.0225 13 0.0228571 14 0.03 15 0.03 16 0.03 17 0.0383333 18 0.04 19 0.045 20 0.046 21 0.05 22 0.0575 23 0.06 24 0.0666667 25 0.0666667 26 0.07 27 0.085 28 0.11 Sen's Estimator (Median Q) is 0.03 Tied Group Value Members 1 0.05 3 Time Period Observations 10/24/2016 1 12/1/2016 1 1/4/2017 1 2/16/2017 1 4/20/2017 1 5/22/2017 1 6/29/2017 1 8/16/2017 1 There are 0 time periods with multiple data A = 66 B = 0 C = 6 D = 0 E = 6 F = 0 a = 1176 b = 3024 c = 112 Group Variance = 61.6667 For 90% confidence interval (two-tailed), Z at (1-0.9)/2 = 1.64485 C = 12.9167 M1 = (28 - 12.9167)/2.0 = 7.54164 M2 = (28 + 12.9167)/2.0 + 1 = 21.4584 Lower limit is 0.004 = Q(8) Upper limit is 0.05 = Q(21) 0.004 > 0 indicating an upward trend in data. DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 7 Sen's Slope Analysis Parameter: Thallium Location: MW-10 Original Data (Not Transformed) Non-Detects Replaced with Detection Limit 90% Confidence Level Xj Xk (Xj - Xk)/(j-k)Q ND<0.05 (12/1/2016)0.15 (10/24/2016)(0.05 - 0.15)/(2 - 1)-0.1 ND<0.05 (1/4/2017)0.15 (10/24/2016)(0.05 - 0.15)/(3 - 1)-0.05 ND<0.05 (2/16/2017)0.15 (10/24/2016)(0.05 - 0.15)/(4 - 1)-0.0333333 ND<0.08 (4/20/2017)0.15 (10/24/2016)(0.08 - 0.15)/(5 - 1)-0.0175 0.08 (5/22/2017)0.15 (10/24/2016)(0.08 - 0.15)/(6 - 1)-0.014 ND<0.08 (6/29/2017)0.15 (10/24/2016)(0.08 - 0.15)/(7 - 1)-0.0116667 0.15 (8/16/2017)0.15 (10/24/2016)(0.15 - 0.15)/(8 - 1)0 ND<0.05 (1/4/2017)ND<0.05 (12/1/2016)(0.05 - 0.05)/(3 - 2)0 ND<0.05 (2/16/2017)ND<0.05 (12/1/2016)(0.05 - 0.05)/(4 - 2)0 ND<0.08 (4/20/2017)ND<0.05 (12/1/2016)(0.08 - 0.05)/(5 - 2)0.01 0.08 (5/22/2017)ND<0.05 (12/1/2016)(0.08 - 0.05)/(6 - 2)0.0075 ND<0.08 (6/29/2017)ND<0.05 (12/1/2016)(0.08 - 0.05)/(7 - 2)0.006 0.15 (8/16/2017)ND<0.05 (12/1/2016)(0.15 - 0.05)/(8 - 2)0.0166667 ND<0.05 (2/16/2017)ND<0.05 (1/4/2017)(0.05 - 0.05)/(4 - 3)0 ND<0.08 (4/20/2017)ND<0.05 (1/4/2017)(0.08 - 0.05)/(5 - 3)0.015 0.08 (5/22/2017)ND<0.05 (1/4/2017)(0.08 - 0.05)/(6 - 3)0.01 ND<0.08 (6/29/2017)ND<0.05 (1/4/2017)(0.08 - 0.05)/(7 - 3)0.0075 0.15 (8/16/2017)ND<0.05 (1/4/2017)(0.15 - 0.05)/(8 - 3)0.02 ND<0.08 (4/20/2017)ND<0.05 (2/16/2017)(0.08 - 0.05)/(5 - 4)0.03 0.08 (5/22/2017)ND<0.05 (2/16/2017)(0.08 - 0.05)/(6 - 4)0.015 ND<0.08 (6/29/2017)ND<0.05 (2/16/2017)(0.08 - 0.05)/(7 - 4)0.01 0.15 (8/16/2017)ND<0.05 (2/16/2017)(0.15 - 0.05)/(8 - 4)0.025 0.08 (5/22/2017)ND<0.08 (4/20/2017)(0.08 - 0.08)/(6 - 5)0 ND<0.08 (6/29/2017)ND<0.08 (4/20/2017)(0.08 - 0.08)/(7 - 5)0 0.15 (8/16/2017)ND<0.08 (4/20/2017)(0.15 - 0.08)/(8 - 5)0.0233333 ND<0.08 (6/29/2017)0.08 (5/22/2017)(0.08 - 0.08)/(7 - 6)0 0.15 (8/16/2017)0.08 (5/22/2017)(0.15 - 0.08)/(8 - 6)0.035 0.15 (8/16/2017)ND<0.08 (6/29/2017)(0.15 - 0.08)/(8 - 7)0.07 Number of Q values = 28 Ordered Q Values n Q 1 -0.1 2 -0.05 3 -0.0333333 4 -0.0175 5 -0.014 6 -0.0116667 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 8 7 0 8 0 9 0 10 0 11 0 12 0 13 0 14 0.006 15 0.0075 16 0.0075 17 0.01 18 0.01 19 0.01 20 0.015 21 0.015 22 0.0166667 23 0.02 24 0.0233333 25 0.025 26 0.03 27 0.035 28 0.07 Sen's Estimator (Median Q) is 0.00675 Tied Group Value Members 1 0.15 2 2 0.05 3 3 0.08 3 Time Period Observations 10/24/2016 1 12/1/2016 1 1/4/2017 1 2/16/2017 1 4/20/2017 1 5/22/2017 1 6/29/2017 1 8/16/2017 1 There are 0 time periods with multiple data A = 150 B = 0 C = 12 D = 0 E = 14 F = 0 a = 1176 b = 3024 c = 112 Group Variance = 57 For 90% confidence interval (two-tailed), Z at (1-0.9)/2 = 1.64485 C = 12.4184 M1 = (28 - 12.4184)/2.0 = 7.79082 M2 = (28 + 12.4184)/2.0 + 1 = 21.2092 Lower limit is 0 = Q(8) Upper limit is 0.015 = Q(21) 0 < 0 < 0.015 indicating no trend in data. DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 9 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 10 Sen's Slope Analysis Parameter: Thallium Location: MW-11 Original Data (Not Transformed) Non-Detects Replaced with Detection Limit 90% Confidence Level Xj Xk (Xj - Xk)/(j-k)Q ND<0.05 (12/1/2016)ND<0.05 (10/24/2016)(0.05 - 0.05)/(2 - 1)0 ND<0.05 (1/4/2017)ND<0.05 (10/24/2016)(0.05 - 0.05)/(3 - 1)0 ND<0.05 (2/16/2017)ND<0.05 (10/24/2016)(0.05 - 0.05)/(4 - 1)0 ND<0.08 (4/20/2017)ND<0.05 (10/24/2016)(0.08 - 0.05)/(5 - 1)0.0075 ND<0.08 (5/22/2017)ND<0.05 (10/24/2016)(0.08 - 0.05)/(6 - 1)0.006 0.11 (6/29/2017)ND<0.05 (10/24/2016)(0.11 - 0.05)/(7 - 1)0.01 0.17 (8/16/2017)ND<0.05 (10/24/2016)(0.17 - 0.05)/(8 - 1)0.0171429 ND<0.05 (1/4/2017)ND<0.05 (12/1/2016)(0.05 - 0.05)/(3 - 2)0 ND<0.05 (2/16/2017)ND<0.05 (12/1/2016)(0.05 - 0.05)/(4 - 2)0 ND<0.08 (4/20/2017)ND<0.05 (12/1/2016)(0.08 - 0.05)/(5 - 2)0.01 ND<0.08 (5/22/2017)ND<0.05 (12/1/2016)(0.08 - 0.05)/(6 - 2)0.0075 0.11 (6/29/2017)ND<0.05 (12/1/2016)(0.11 - 0.05)/(7 - 2)0.012 0.17 (8/16/2017)ND<0.05 (12/1/2016)(0.17 - 0.05)/(8 - 2)0.02 ND<0.05 (2/16/2017)ND<0.05 (1/4/2017)(0.05 - 0.05)/(4 - 3)0 ND<0.08 (4/20/2017)ND<0.05 (1/4/2017)(0.08 - 0.05)/(5 - 3)0.015 ND<0.08 (5/22/2017)ND<0.05 (1/4/2017)(0.08 - 0.05)/(6 - 3)0.01 0.11 (6/29/2017)ND<0.05 (1/4/2017)(0.11 - 0.05)/(7 - 3)0.015 0.17 (8/16/2017)ND<0.05 (1/4/2017)(0.17 - 0.05)/(8 - 3)0.024 ND<0.08 (4/20/2017)ND<0.05 (2/16/2017)(0.08 - 0.05)/(5 - 4)0.03 ND<0.08 (5/22/2017)ND<0.05 (2/16/2017)(0.08 - 0.05)/(6 - 4)0.015 0.11 (6/29/2017)ND<0.05 (2/16/2017)(0.11 - 0.05)/(7 - 4)0.02 0.17 (8/16/2017)ND<0.05 (2/16/2017)(0.17 - 0.05)/(8 - 4)0.03 ND<0.08 (5/22/2017)ND<0.08 (4/20/2017)(0.08 - 0.08)/(6 - 5)0 0.11 (6/29/2017)ND<0.08 (4/20/2017)(0.11 - 0.08)/(7 - 5)0.015 0.17 (8/16/2017)ND<0.08 (4/20/2017)(0.17 - 0.08)/(8 - 5)0.03 0.11 (6/29/2017)ND<0.08 (5/22/2017)(0.11 - 0.08)/(7 - 6)0.03 0.17 (8/16/2017)ND<0.08 (5/22/2017)(0.17 - 0.08)/(8 - 6)0.045 0.17 (8/16/2017)0.11 (6/29/2017)(0.17 - 0.11)/(8 - 7)0.06 Number of Q values = 28 Ordered Q Values n Q 1 0 2 0 3 0 4 0 5 0 6 0 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 11 7 0 8 0.006 9 0.0075 10 0.0075 11 0.01 12 0.01 13 0.01 14 0.012 15 0.015 16 0.015 17 0.015 18 0.015 19 0.0171429 20 0.02 21 0.02 22 0.024 23 0.03 24 0.03 25 0.03 26 0.03 27 0.045 28 0.06 Sen's Estimator (Median Q) is 0.0135 Tied Group Value Members 1 0.05 4 2 0.08 2 Time Period Observations 10/24/2016 1 12/1/2016 1 1/4/2017 1 2/16/2017 1 4/20/2017 1 5/22/2017 1 6/29/2017 1 8/16/2017 1 There are 0 time periods with multiple data A = 174 B = 0 C = 24 D = 0 E = 14 F = 0 a = 1176 b = 3024 c = 112 Group Variance = 55.6667 For 90% confidence interval (two-tailed), Z at (1-0.9)/2 = 1.64485 C = 12.2723 M1 = (28 - 12.2723)/2.0 = 7.86387 M2 = (28 + 12.2723)/2.0 + 1 = 21.1361 Lower limit is 0.006 = Q(8) Upper limit is 0.02 = Q(21) 0.006 > 0 indicating an upward trend in data. DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 12 Sen's Slope Analysis Parameter: Thallium Location: MW-12 Original Data (Not Transformed) Non-Detects Replaced with Detection Limit 90% Confidence Level Xj Xk (Xj - Xk)/(j-k)Q 0.08 (12/1/2016)ND<0.05 (10/24/2016)(0.08 - 0.05)/(2 - 1)0.03 ND<0.05 (1/4/2017)ND<0.05 (10/24/2016)(0.05 - 0.05)/(3 - 1)0 0.2 (2/16/2017)ND<0.05 (10/24/2016)(0.2 - 0.05)/(4 - 1)0.05 ND<0.08 (4/20/2017)ND<0.05 (10/24/2016)(0.08 - 0.05)/(5 - 1)0.0075 0.11 (5/22/2017)ND<0.05 (10/24/2016)(0.11 - 0.05)/(6 - 1)0.012 0.15 (6/29/2017)ND<0.05 (10/24/2016)(0.15 - 0.05)/(7 - 1)0.0166667 ND<0.08 (8/16/2017)ND<0.05 (10/24/2016)(0.08 - 0.05)/(8 - 1)0.00428571 ND<0.05 (1/4/2017)0.08 (12/1/2016)(0.05 - 0.08)/(3 - 2)-0.03 0.2 (2/16/2017)0.08 (12/1/2016)(0.2 - 0.08)/(4 - 2)0.06 ND<0.08 (4/20/2017)0.08 (12/1/2016)(0.08 - 0.08)/(5 - 2)0 0.11 (5/22/2017)0.08 (12/1/2016)(0.11 - 0.08)/(6 - 2)0.0075 0.15 (6/29/2017)0.08 (12/1/2016)(0.15 - 0.08)/(7 - 2)0.014 ND<0.08 (8/16/2017)0.08 (12/1/2016)(0.08 - 0.08)/(8 - 2)0 0.2 (2/16/2017)ND<0.05 (1/4/2017)(0.2 - 0.05)/(4 - 3)0.15 ND<0.08 (4/20/2017)ND<0.05 (1/4/2017)(0.08 - 0.05)/(5 - 3)0.015 0.11 (5/22/2017)ND<0.05 (1/4/2017)(0.11 - 0.05)/(6 - 3)0.02 0.15 (6/29/2017)ND<0.05 (1/4/2017)(0.15 - 0.05)/(7 - 3)0.025 ND<0.08 (8/16/2017)ND<0.05 (1/4/2017)(0.08 - 0.05)/(8 - 3)0.006 ND<0.08 (4/20/2017)0.2 (2/16/2017)(0.08 - 0.2)/(5 - 4)-0.12 0.11 (5/22/2017)0.2 (2/16/2017)(0.11 - 0.2)/(6 - 4)-0.045 0.15 (6/29/2017)0.2 (2/16/2017)(0.15 - 0.2)/(7 - 4)-0.0166667 ND<0.08 (8/16/2017)0.2 (2/16/2017)(0.08 - 0.2)/(8 - 4)-0.03 0.11 (5/22/2017)ND<0.08 (4/20/2017)(0.11 - 0.08)/(6 - 5)0.03 0.15 (6/29/2017)ND<0.08 (4/20/2017)(0.15 - 0.08)/(7 - 5)0.035 ND<0.08 (8/16/2017)ND<0.08 (4/20/2017)(0.08 - 0.08)/(8 - 5)0 0.15 (6/29/2017)0.11 (5/22/2017)(0.15 - 0.11)/(7 - 6)0.04 ND<0.08 (8/16/2017)0.11 (5/22/2017)(0.08 - 0.11)/(8 - 6)-0.015 ND<0.08 (8/16/2017)0.15 (6/29/2017)(0.08 - 0.15)/(8 - 7)-0.07 Number of Q values = 28 Ordered Q Values n Q 1 -0.12 2 -0.07 3 -0.045 4 -0.03 5 -0.03 6 -0.0166667 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 13 7 -0.015 8 0 9 0 10 0 11 0 12 0.00428571 13 0.006 14 0.0075 15 0.0075 16 0.012 17 0.014 18 0.015 19 0.0166667 20 0.02 21 0.025 22 0.03 23 0.03 24 0.035 25 0.04 26 0.05 27 0.06 28 0.15 Sen's Estimator (Median Q) is 0.0075 Tied Group Value Members 1 0.05 2 2 0.08 3 Time Period Observations 10/24/2016 1 12/1/2016 1 1/4/2017 1 2/16/2017 1 4/20/2017 1 5/22/2017 1 6/29/2017 1 8/16/2017 1 There are 0 time periods with multiple data A = 84 B = 0 C = 6 D = 0 E = 8 F = 0 a = 1176 b = 3024 c = 112 Group Variance = 60.6667 For 90% confidence interval (two-tailed), Z at (1-0.9)/2 = 1.64485 C = 12.8116 M1 = (28 - 12.8116)/2.0 = 7.59422 M2 = (28 + 12.8116)/2.0 + 1 = 21.4058 Lower limit is 0 = Q(8) Upper limit is 0.025 = Q(21) 0 < 0 < 0.025 indicating no trend in data. DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 14 Sen's Slope Analysis Parameter: Thallium Location: MW-17 Original Data (Not Transformed) Non-Detects Replaced with Detection Limit 90% Confidence Level Xj Xk (Xj - Xk)/(j-k)Q ND<0.05 (12/1/2016)0.12 (10/24/2016)(0.05 - 0.12)/(2 - 1)-0.07 ND<0.05 (1/4/2017)0.12 (10/24/2016)(0.05 - 0.12)/(3 - 1)-0.035 ND<0.05 (2/16/2017)0.12 (10/24/2016)(0.05 - 0.12)/(4 - 1)-0.0233333 ND<0.08 (4/20/2017)0.12 (10/24/2016)(0.08 - 0.12)/(5 - 1)-0.01 ND<0.08 (5/22/2017)0.12 (10/24/2016)(0.08 - 0.12)/(6 - 1)-0.008 0.18 (6/29/2017)0.12 (10/24/2016)(0.18 - 0.12)/(7 - 1)0.01 0.11 (8/16/2017)0.12 (10/24/2016)(0.11 - 0.12)/(8 - 1)-0.00142857 ND<0.05 (1/4/2017)ND<0.05 (12/1/2016)(0.05 - 0.05)/(3 - 2)0 ND<0.05 (2/16/2017)ND<0.05 (12/1/2016)(0.05 - 0.05)/(4 - 2)0 ND<0.08 (4/20/2017)ND<0.05 (12/1/2016)(0.08 - 0.05)/(5 - 2)0.01 ND<0.08 (5/22/2017)ND<0.05 (12/1/2016)(0.08 - 0.05)/(6 - 2)0.0075 0.18 (6/29/2017)ND<0.05 (12/1/2016)(0.18 - 0.05)/(7 - 2)0.026 0.11 (8/16/2017)ND<0.05 (12/1/2016)(0.11 - 0.05)/(8 - 2)0.01 ND<0.05 (2/16/2017)ND<0.05 (1/4/2017)(0.05 - 0.05)/(4 - 3)0 ND<0.08 (4/20/2017)ND<0.05 (1/4/2017)(0.08 - 0.05)/(5 - 3)0.015 ND<0.08 (5/22/2017)ND<0.05 (1/4/2017)(0.08 - 0.05)/(6 - 3)0.01 0.18 (6/29/2017)ND<0.05 (1/4/2017)(0.18 - 0.05)/(7 - 3)0.0325 0.11 (8/16/2017)ND<0.05 (1/4/2017)(0.11 - 0.05)/(8 - 3)0.012 ND<0.08 (4/20/2017)ND<0.05 (2/16/2017)(0.08 - 0.05)/(5 - 4)0.03 ND<0.08 (5/22/2017)ND<0.05 (2/16/2017)(0.08 - 0.05)/(6 - 4)0.015 0.18 (6/29/2017)ND<0.05 (2/16/2017)(0.18 - 0.05)/(7 - 4)0.0433333 0.11 (8/16/2017)ND<0.05 (2/16/2017)(0.11 - 0.05)/(8 - 4)0.015 ND<0.08 (5/22/2017)ND<0.08 (4/20/2017)(0.08 - 0.08)/(6 - 5)0 0.18 (6/29/2017)ND<0.08 (4/20/2017)(0.18 - 0.08)/(7 - 5)0.05 0.11 (8/16/2017)ND<0.08 (4/20/2017)(0.11 - 0.08)/(8 - 5)0.01 0.18 (6/29/2017)ND<0.08 (5/22/2017)(0.18 - 0.08)/(7 - 6)0.1 0.11 (8/16/2017)ND<0.08 (5/22/2017)(0.11 - 0.08)/(8 - 6)0.015 0.11 (8/16/2017)0.18 (6/29/2017)(0.11 - 0.18)/(8 - 7)-0.07 Number of Q values = 28 Ordered Q Values n Q 1 -0.07 2 -0.07 3 -0.035 4 -0.0233333 5 -0.01 6 -0.008 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 15 7 -0.00142857 8 0 9 0 10 0 11 0 12 0.0075 13 0.01 14 0.01 15 0.01 16 0.01 17 0.01 18 0.012 19 0.015 20 0.015 21 0.015 22 0.015 23 0.026 24 0.03 25 0.0325 26 0.0433333 27 0.05 28 0.1 Sen's Estimator (Median Q) is 0.01 Tied Group Value Members 1 0.05 3 2 0.08 2 Time Period Observations 10/24/2016 1 12/1/2016 1 1/4/2017 1 2/16/2017 1 4/20/2017 1 5/22/2017 1 6/29/2017 1 8/16/2017 1 There are 0 time periods with multiple data A = 84 B = 0 C = 6 D = 0 E = 8 F = 0 a = 1176 b = 3024 c = 112 Group Variance = 60.6667 For 90% confidence interval (two-tailed), Z at (1-0.9)/2 = 1.64485 C = 12.8116 M1 = (28 - 12.8116)/2.0 = 7.59422 M2 = (28 + 12.8116)/2.0 + 1 = 21.4058 Lower limit is 0 = Q(8) Upper limit is 0.015 = Q(21) 0 < 0 < 0.015 indicating no trend in data. DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 16 Thallium Multi-Well Time-Series Graph Sample DateConcentration (ppb)0 0.05 0.1 0.15 0.2 0.25 0.3 MW- 8 MW- 9 MW-10 MW-11 MW-12 MW-1710/24/201612/5/20161/16/20172/27/20174/11/20175/23/20177/4/20178/16/2017DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 1 Concentrations (ppb) Parameter: Total Dissolved Residue Original Data (Not Transformed) Non-Detects Replaced with Detection Limit Total Measurements: 48 Total Non-Detect: 1 Percent Non-Detects: 2.08333% Total Background Measurements: 8 There is 1 background location Loc.Meas.ND Date Conc.Original MW- 8 8 0 (0%)10/24/2016 56000 56000 12/1/2016 23000 23000 1/4/2017 66000 66000 2/16/2017 28000 28000 4/20/2017 48000 48000 5/22/2017 55000 55000 6/29/2017 41000 41000 8/16/2017 68000 68000 There are 5 compliance locations Loc.Meas.ND Date Conc.Original MW- 9 8 0 (0%)10/24/2016 52000 52000 12/1/2016 35000 35000 1/4/2017 36000 36000 2/16/2017 44000 44000 4/20/2017 37000 37000 5/22/2017 44000 44000 6/29/2017 38000 38000 8/16/2017 61000 61000 MW-10 8 0 (0%)10/24/2016 35000 35000 12/1/2016 28000 28000 1/4/2017 34000 34000 2/16/2017 37000 37000 4/20/2017 35000 35000 5/22/2017 43000 43000 6/29/2017 26000 26000 8/16/2017 48000 48000 MW-11 8 0 (0%)10/24/2016 92000 92000 12/1/2016 84000 84000 1/4/2017 92000 92000 2/16/2017 210000 210000 4/20/2017 96000 96000 5/22/2017 88000 88000 6/29/2017 90000 90000 8/16/2017 107000 107000 MW-12 8 0 (0%)10/24/2016 29000 29000 12/1/2016 47000 47000 1/4/2017 39000 39000 2/16/2017 72000 72000 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 2 4/20/2017 28000 28000 5/22/2017 30000 30000 6/29/2017 22000 22000 8/16/2017 41000 41000 MW-17 8 1 (12.5%)10/24/2016 26000 26000 12/1/2016 ND<1000 ND<1000 1/4/2017 22000 22000 2/16/2017 20000 20000 4/20/2017 486000 486000 5/22/2017 44000 44000 6/29/2017 16000 16000 8/16/2017 38000 38000 There are 0 unused locations Loc.Meas.ND Date Conc.Original DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 3 Wilcoxon Non-Parametric Analysis (Inter-Well) Parameter: Total Dissolved Residue Location: MW- 9 Original Data (Not Transformed) Non-Detects Replaced with Detection Limit Total non detects is 0 Non detect rank is 0 Wilcoxon Ranks Location Date Conc.Rank MW- 8 10/24/2016 56000 13 12/1/2016 23000 1 1/4/2017 66000 15 2/16/2017 28000 2 4/20/2017 48000 10 5/22/2017 55000 12 6/29/2017 41000 7 8/16/2017 68000 16 MW- 9 10/24/2016 52000 11 12/1/2016 35000 3 1/4/2017 36000 4 2/16/2017 44000 8 4/20/2017 37000 5 5/22/2017 44000 9 6/29/2017 38000 6 8/16/2017 61000 14 The Wilcoxon Statistic is 24 The Expected value is is 32 The Standard Deviation is 9.5219 The Z Score is -0.892679 The Standard Deviation adjusted for ties is 9.5219 The Z Score adjusted for ties is -0.892679 -0.892679 < 2.326 indicating no contamination at 1% significance level -0.892679 < 2.326 indicating no contamination at 1% significance level when adjusted for ties DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 4 Wilcoxon Non-Parametric Analysis (Inter-Well) Parameter: Total Dissolved Residue Location: MW-10 Original Data (Not Transformed) Non-Detects Replaced with Detection Limit Total non detects is 0 Non detect rank is 0 Wilcoxon Ranks Location Date Conc.Rank MW- 8 10/24/2016 56000 14 12/1/2016 23000 1 1/4/2017 66000 15 2/16/2017 28000 3 4/20/2017 48000 11 5/22/2017 55000 13 6/29/2017 41000 9 8/16/2017 68000 16 MW-10 10/24/2016 35000 6 12/1/2016 28000 4 1/4/2017 34000 5 2/16/2017 37000 8 4/20/2017 35000 7 5/22/2017 43000 10 6/29/2017 26000 2 8/16/2017 48000 12 The Wilcoxon Statistic is 18 The Expected value is is 32 The Standard Deviation is 9.5219 The Z Score is -1.5228 The Standard Deviation adjusted for ties is 9.5219 The Z Score adjusted for ties is -1.5228 -1.5228 < 2.326 indicating no contamination at 1% significance level -1.5228 < 2.326 indicating no contamination at 1% significance level when adjusted for ties DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 5 Wilcoxon Non-Parametric Analysis (Inter-Well) Parameter: Total Dissolved Residue Location: MW-11 Original Data (Not Transformed) Non-Detects Replaced with Detection Limit Total non detects is 0 Non detect rank is 0 Wilcoxon Ranks Location Date Conc.Rank MW- 8 10/24/2016 56000 6 12/1/2016 23000 1 1/4/2017 66000 7 2/16/2017 28000 2 4/20/2017 48000 4 5/22/2017 55000 5 6/29/2017 41000 3 8/16/2017 68000 8 MW-11 10/24/2016 92000 12 12/1/2016 84000 9 1/4/2017 92000 13 2/16/2017 210000 16 4/20/2017 96000 14 5/22/2017 88000 10 6/29/2017 90000 11 8/16/2017 107000 15 The Wilcoxon Statistic is 64 The Expected value is is 32 The Standard Deviation is 9.5219 The Z Score is 3.30816 The Standard Deviation adjusted for ties is 9.5219 The Z Score adjusted for ties is 3.30816 3.30816 > 2.326 indicating possible contamination at 1% significance level 3.30816 > 2.326 indicating possible contamination at 1% significance level when adjusted for ties DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 6 Wilcoxon Non-Parametric Analysis (Inter-Well) Parameter: Total Dissolved Residue Location: MW-12 Original Data (Not Transformed) Non-Detects Replaced with Detection Limit Total non detects is 0 Non detect rank is 0 Wilcoxon Ranks Location Date Conc.Rank MW- 8 10/24/2016 56000 13 12/1/2016 23000 2 1/4/2017 66000 14 2/16/2017 28000 3 4/20/2017 48000 11 5/22/2017 55000 12 6/29/2017 41000 8 8/16/2017 68000 15 MW-12 10/24/2016 29000 5 12/1/2016 47000 10 1/4/2017 39000 7 2/16/2017 72000 16 4/20/2017 28000 4 5/22/2017 30000 6 6/29/2017 22000 1 8/16/2017 41000 9 The Wilcoxon Statistic is 22 The Expected value is is 32 The Standard Deviation is 9.5219 The Z Score is -1.10272 The Standard Deviation adjusted for ties is 9.5219 The Z Score adjusted for ties is -1.10272 -1.10272 < 2.326 indicating no contamination at 1% significance level -1.10272 < 2.326 indicating no contamination at 1% significance level when adjusted for ties DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 7 Wilcoxon Non-Parametric Analysis (Inter-Well) Parameter: Total Dissolved Residue Location: MW-17 Original Data (Not Transformed) Non-Detects Replaced with Detection Limit Total non detects is 1 Non detect rank is 1 Wilcoxon Ranks Location Date Conc.Rank MW- 8 10/24/2016 56000 13 12/1/2016 23000 5 1/4/2017 66000 14 2/16/2017 28000 7 4/20/2017 48000 11 5/22/2017 55000 12 6/29/2017 41000 9 8/16/2017 68000 15 MW-17 10/24/2016 26000 6 12/1/2016 ND<1000 1 1/4/2017 22000 4 2/16/2017 20000 3 4/20/2017 486000 16 5/22/2017 44000 10 6/29/2017 16000 2 8/16/2017 38000 8 The Wilcoxon Statistic is 14 The Expected value is is 32 The Standard Deviation is 9.5219 The Z Score is -1.94289 The Standard Deviation adjusted for ties is 9.5219 The Z Score adjusted for ties is -1.94289 -1.94289 < 2.326 indicating no contamination at 1% significance level -1.94289 < 2.326 indicating no contamination at 1% significance level when adjusted for ties DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 8 Sen's Slope Analysis Parameter: Total Dissolved Residue Location: MW-11 Original Data (Not Transformed) Non-Detects Replaced with Detection Limit 90% Confidence Level Xj Xk (Xj - Xk)/(j-k)Q 84000 (12/1/2016)92000 (10/24/2016)(84000 - 92000)/(2 - 1)-8000 92000 (1/4/2017)92000 (10/24/2016)(92000 - 92000)/(3 - 1)0 210000 (2/16/2017)92000 (10/24/2016)(210000 - 92000)/(4 - 1)39333.3 96000 (4/20/2017)92000 (10/24/2016)(96000 - 92000)/(5 - 1)1000 88000 (5/22/2017)92000 (10/24/2016)(88000 - 92000)/(6 - 1)-800 90000 (6/29/2017)92000 (10/24/2016)(90000 - 92000)/(7 - 1)-333.333 107000 (8/16/2017)92000 (10/24/2016)(107000 - 92000)/(8 - 1)2142.86 92000 (1/4/2017)84000 (12/1/2016)(92000 - 84000)/(3 - 2)8000 210000 (2/16/2017)84000 (12/1/2016)(210000 - 84000)/(4 - 2)63000 96000 (4/20/2017)84000 (12/1/2016)(96000 - 84000)/(5 - 2)4000 88000 (5/22/2017)84000 (12/1/2016)(88000 - 84000)/(6 - 2)1000 90000 (6/29/2017)84000 (12/1/2016)(90000 - 84000)/(7 - 2)1200 107000 (8/16/2017)84000 (12/1/2016)(107000 - 84000)/(8 - 2)3833.33 210000 (2/16/2017)92000 (1/4/2017)(210000 - 92000)/(4 - 3)118000 96000 (4/20/2017)92000 (1/4/2017)(96000 - 92000)/(5 - 3)2000 88000 (5/22/2017)92000 (1/4/2017)(88000 - 92000)/(6 - 3)-1333.33 90000 (6/29/2017)92000 (1/4/2017)(90000 - 92000)/(7 - 3)-500 107000 (8/16/2017)92000 (1/4/2017)(107000 - 92000)/(8 - 3)3000 96000 (4/20/2017)210000 (2/16/2017)(96000 - 210000)/(5 - 4)-114000 88000 (5/22/2017)210000 (2/16/2017)(88000 - 210000)/(6 - 4)-61000 90000 (6/29/2017)210000 (2/16/2017)(90000 - 210000)/(7 - 4)-40000 107000 (8/16/2017)210000 (2/16/2017)(107000 - 210000)/(8 - 4)-25750 88000 (5/22/2017)96000 (4/20/2017)(88000 - 96000)/(6 - 5)-8000 90000 (6/29/2017)96000 (4/20/2017)(90000 - 96000)/(7 - 5)-3000 107000 (8/16/2017)96000 (4/20/2017)(107000 - 96000)/(8 - 5)3666.67 90000 (6/29/2017)88000 (5/22/2017)(90000 - 88000)/(7 - 6)2000 107000 (8/16/2017)88000 (5/22/2017)(107000 - 88000)/(8 - 6)9500 107000 (8/16/2017)90000 (6/29/2017)(107000 - 90000)/(8 - 7)17000 Number of Q values = 28 Ordered Q Values n Q 1 -114000 2 -61000 3 -40000 4 -25750 5 -8000 6 -8000 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 9 7 -3000 8 -1333.33 9 -800 10 -500 11 -333.333 12 0 13 1000 14 1000 15 1200 16 2000 17 2000 18 2142.86 19 3000 20 3666.67 21 3833.33 22 4000 23 8000 24 9500 25 17000 26 39333.3 27 63000 28 118000 Sen's Estimator (Median Q) is 1100 Tied Group Value Members 1 92000 2 Time Period Observations 10/24/2016 1 12/1/2016 1 1/4/2017 1 2/16/2017 1 4/20/2017 1 5/22/2017 1 6/29/2017 1 8/16/2017 1 There are 0 time periods with multiple data A = 18 B = 0 C = 0 D = 0 E = 2 F = 0 a = 1176 b = 3024 c = 112 Group Variance = 64.3333 For 90% confidence interval (two-tailed), Z at (1-0.9)/2 = 1.64485 C = 13.193 M1 = (28 - 13.193)/2.0 = 7.40348 M2 = (28 + 13.193)/2.0 + 1 = 21.5965 Lower limit is -3000 = Q(7) Upper limit is 4000 = Q(22) -3000 < 0 < 4000 indicating no trend in data. DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 10 Total Dissolved Residue Multi-Well Time-Series Graph Sample DateConcentration (ppb)0 100000 200000 300000 400000 500000 MW- 8 MW- 9 MW-10 MW-11 MW-12 MW-1710/24/201612/5/20161/16/20172/27/20174/11/20175/23/20177/4/20178/16/2017DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 1 Concentrations (ppb) Parameter: Zinc Original Data (Not Transformed) Non-Detects Replaced with Detection Limit Total Measurements: 114 Total Non-Detect: 4 Percent Non-Detects: 3.50877% Total Background Measurements: 19 There is 1 background location Loc.Meas.ND Date Conc.Original MW- 8 19 3 (15.7895%)2/18/2008 140 140 8/20/2009 ND<0.14 ND<0.14 8/24/2010 21 21 2/23/2011 23 23 8/24/2011 ND<0.24 ND<0.24 2/21/2012 ND<0.24 ND<0.24 8/28/2012 5.5 5.5 2/19/2013 5 5 8/28/2013 4.3 4.3 2/24/2014 4.5 4.5 8/5/2014 3.9 3.9 2/10/2015 9.2 9.2 8/25/2015 2.8 2.8 2/25/2016 5.7 5.7 8/10/2016 3.9 3.9 2/16/2017 2.8 2.8 8/16/2017 11 11 2/19/2018 2.4 2.4 8/14/2018 3.5 3.5 There are 5 compliance locations Loc.Meas.ND Date Conc.Original MW- 9 19 0 (0%)2/18/2008 84 84 8/20/2009 2.6 2.6 8/24/2010 21 21 2/23/2011 2.5 2.5 8/24/2011 42 42 2/21/2012 9.7 9.7 8/28/2012 6.8 6.8 2/19/2013 11 11 8/28/2013 24 24 2/24/2014 43 43 8/5/2014 6.1 6.1 2/10/2015 23 23 8/25/2015 8.1 8.1 2/25/2016 8.3 8.3 8/10/2016 8 8 2/16/2017 2 2 8/16/2017 18 18 2/19/2018 2.7 2.7 8/14/2018 4.2 4.2 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 2 MW-10 19 1 (5.26316%)2/18/2008 105 105 8/20/2009 2.4 2.4 8/24/2010 1.4 1.4 2/23/2011 1.3 1.3 8/24/2011 2.4 2.4 2/21/2012 3.1 3.1 8/28/2012 9.3 9.3 2/19/2013 3.2 3.2 8/28/2013 10 10 2/24/2014 17 17 8/5/2014 3.9 3.9 2/10/2015 5.4 5.4 8/25/2015 2 2 2/25/2016 3.4 3.4 8/10/2016 2.1 2.1 2/16/2017 ND<1.61 ND<1.61 8/16/2017 5.6 5.6 2/19/2018 1.9 1.9 8/14/2018 1.8 1.8 MW-11 19 0 (0%)2/18/2008 20 20 8/20/2009 15 15 8/24/2010 2 2 2/23/2011 12 12 8/24/2011 9.4 9.4 2/21/2012 4.2 4.2 8/28/2012 23 23 2/19/2013 2.5 2.5 8/28/2013 14 14 2/24/2014 21 21 8/5/2014 17 17 2/10/2015 4.9 4.9 8/25/2015 1.9 1.9 2/25/2016 26 26 8/10/2016 5.8 5.8 2/16/2017 1.7 1.7 8/16/2017 26 26 2/19/2018 1.8 1.8 8/14/2018 1.2 1.2 MW-12 19 0 (0%)2/18/2008 230 230 8/20/2009 8.1 8.1 8/24/2010 12 12 2/23/2011 10 10 8/24/2011 112 112 2/21/2012 36 36 8/28/2012 20 20 2/19/2013 16 16 8/28/2013 11 11 2/24/2014 23 23 8/5/2014 19 19 2/10/2015 8.6 8.6 8/25/2015 19 19 2/25/2016 33 33 8/10/2016 9.3 9.3 2/16/2017 12 12 8/16/2017 6.4 6.4 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 3 2/19/2018 30 30 8/14/2018 43 43 MW-17 19 0 (0%)2/18/2008 77 77 8/20/2009 23 23 8/24/2010 12 12 2/23/2011 8.3 8.3 8/24/2011 46 46 2/21/2012 41 41 8/28/2012 21 21 2/19/2013 8.1 8.1 8/28/2013 13 13 2/24/2014 21 21 8/5/2014 6.4 6.4 2/10/2015 21 21 8/25/2015 6.7 6.7 2/25/2016 16 16 8/10/2016 6.9 6.9 2/16/2017 5.2 5.2 8/16/2017 12 12 2/19/2018 5.6 5.6 8/14/2018 4.6 4.6 There are 0 unused locations Loc.Meas.ND Date Conc.Original DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 4 Kruskal-Wallis Non-Parametric Test Parameter: Zinc Natural Logarithm Transformation Non-Detects Replaced with Detection Limit Kruskal Wallis Ranks Background Wells Well ID Date Result Rank MW- 8 2/18/2008 4.94164 113 8/20/2009 ND<-1.96611 2.5 8/24/2010 3.04452 87 2/23/2011 3.13549 93 8/24/2011 ND<-1.42712 2.5 2/21/2012 ND<-1.42712 2.5 8/28/2012 1.70475 42 2/19/2013 1.60944 39 8/28/2013 1.45862 35 2/24/2014 1.50408 36 8/5/2014 1.36098 30 2/10/2015 2.2192 60 8/25/2015 1.02962 24 2/25/2016 1.74047 45 8/10/2016 1.36098 31 2/16/2017 1.02962 25 8/16/2017 2.3979 67 2/19/2018 0.875469 17 8/14/2018 1.25276 29 Rank Sum = 780.5 Rank Mean = 41.0789 Background Rank Sum = 780.5 Background Rank Mean = 41.0789 Compliance Wells Well ID Date Result Rank MW- 9 2/18/2008 4.43082 110 8/20/2009 0.955511 22 8/24/2010 3.04452 88 2/23/2011 0.916291 20 8/24/2011 3.73767 105 2/21/2012 2.27213 64 8/28/2012 1.91692 51 2/19/2013 2.3979 68 8/28/2013 3.17805 98 2/24/2014 3.7612 106 8/5/2014 1.80829 47 2/10/2015 3.13549 94 8/25/2015 2.09186 54 2/25/2016 2.11626 57 8/10/2016 2.07944 53 2/16/2017 0.693147 13 8/16/2017 2.89037 82 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 5 2/19/2018 0.993252 23 8/14/2018 1.43508 33 Rank Sum = 1188 Rank Mean = 62.5263 MW-10 2/18/2008 4.65396 111 8/20/2009 0.875469 18 8/24/2010 0.336472 7 2/23/2011 0.262364 6 8/24/2011 0.875469 19 2/21/2012 1.1314 26 8/28/2012 2.23001 61 2/19/2013 1.16315 27 8/28/2013 2.30259 65 2/24/2014 2.83321 80 8/5/2014 1.36098 32 2/10/2015 1.6864 41 8/25/2015 0.693147 14 2/25/2016 1.22378 28 8/10/2016 0.741937 16 2/16/2017 ND<0.476234 2.5 8/16/2017 1.72277 43 2/19/2018 0.641854 11 8/14/2018 0.587787 9 Rank Sum = 616.5 Rank Mean = 32.4474 MW-11 2/18/2008 2.99573 85 8/20/2009 2.70805 77 8/24/2010 0.693147 15 2/23/2011 2.48491 70 8/24/2011 2.24071 63 2/21/2012 1.43508 34 8/28/2012 3.13549 95 2/19/2013 0.916291 21 8/28/2013 2.63906 76 2/24/2014 3.04452 89 8/5/2014 2.83321 81 2/10/2015 1.58924 38 8/25/2015 0.641854 12 2/25/2016 3.2581 99 8/10/2016 1.75786 46 2/16/2017 0.530628 8 8/16/2017 3.2581 100 2/19/2018 0.587787 10 8/14/2018 0.182322 5 Rank Sum = 1024 Rank Mean = 53.8947 MW-12 2/18/2008 5.43808 114 8/20/2009 2.09186 55 8/24/2010 2.48491 71 2/23/2011 2.30259 66 8/24/2011 4.7185 112 2/21/2012 3.58352 103 8/28/2012 2.99573 86 2/19/2013 2.77259 78 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 6 8/28/2013 2.3979 69 2/24/2014 3.13549 96 8/5/2014 2.94444 83 2/10/2015 2.15176 59 8/25/2015 2.94444 84 2/25/2016 3.49651 102 8/10/2016 2.23001 62 2/16/2017 2.48491 72 8/16/2017 1.8563 48 2/19/2018 3.4012 101 8/14/2018 3.7612 107 Rank Sum = 1568 Rank Mean = 82.5263 MW-17 2/18/2008 4.34381 109 8/20/2009 3.13549 97 8/24/2010 2.48491 73 2/23/2011 2.11626 58 8/24/2011 3.82864 108 2/21/2012 3.71357 104 8/28/2012 3.04452 90 2/19/2013 2.09186 56 8/28/2013 2.56495 75 2/24/2014 3.04452 91 8/5/2014 1.8563 49 2/10/2015 3.04452 92 8/25/2015 1.90211 50 2/25/2016 2.77259 79 8/10/2016 1.93152 52 2/16/2017 1.64866 40 8/16/2017 2.48491 74 2/19/2018 1.72277 44 8/14/2018 1.52606 37 Rank Sum = 1378 Rank Mean = 72.5263 Calculation Results: Kruskal-Wallis H Statistic = 31.0896 Kruskal-Wallis H Statistic (adjusted for tied non-detects) = 31.0909 95% Confidence comparison value is 11.0705 at 5 degrees of freedom 31.0896 > 11.0705 indicating a significant group difference at 5% significance level 31.0909 > 11.0705 indicating a significant group difference at 5% significance level when adjusted for ties Individual Well Comparisons at 1% Significance Level per Comparison 1% Z score is 2.32634 Mean background rank is 41.0789 Well Mean Rank Dif from Bkg Critical Value MW- 9 62.5263 21.4474 24.9472 MW-10 32.4474 -8.63158 24.9472 MW-11 53.8947 12.8158 24.9472 MW-12 82.5263 41.4474 24.9472 MW-17 72.5263 31.4474 24.9472 Individual Well Comparisons at Groupwise 5% Significance Level DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 7 (1% Significance Level per comparison) 1% Z score is 2.32634 Mean background rank is 41.0789 Well Mean Rank Dif from Bkg Critical Value MW- 9 62.5263 21.4474 24.9472 MW-10 32.4474 -8.63158 24.9472 MW-11 53.8947 12.8158 24.9472 MW-12 82.5263 41.4474 24.9472 MW-17 72.5263 31.4474 24.9472 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 8 Sen's Slope Analysis Parameter: Zinc Location: MW-12 Original Data (Not Transformed) Non-Detects Replaced with Detection Limit 90% Confidence Level Xj Xk (Xj - Xk)/(j-k)Q 8.1 (8/20/2009)230 (2/18/2008)(8.1 - 230)/(2 - 1)-221.9 12 (8/24/2010)230 (2/18/2008)(12 - 230)/(3 - 1)-109 10 (2/23/2011)230 (2/18/2008)(10 - 230)/(4 - 1)-73.3333 112 (8/24/2011)230 (2/18/2008)(112 - 230)/(5 - 1)-29.5 36 (2/21/2012)230 (2/18/2008)(36 - 230)/(6 - 1)-38.8 20 (8/28/2012)230 (2/18/2008)(20 - 230)/(7 - 1)-35 16 (2/19/2013)230 (2/18/2008)(16 - 230)/(8 - 1)-30.5714 11 (8/28/2013)230 (2/18/2008)(11 - 230)/(9 - 1)-27.375 23 (2/24/2014)230 (2/18/2008)(23 - 230)/(10 - 1)-23 19 (8/5/2014)230 (2/18/2008)(19 - 230)/(11 - 1)-21.1 8.6 (2/10/2015)230 (2/18/2008)(8.6 - 230)/(12 - 1)-20.1273 19 (8/25/2015)230 (2/18/2008)(19 - 230)/(13 - 1)-17.5833 33 (2/25/2016)230 (2/18/2008)(33 - 230)/(14 - 1)-15.1538 9.3 (8/10/2016)230 (2/18/2008)(9.3 - 230)/(15 - 1)-15.7643 12 (2/16/2017)230 (2/18/2008)(12 - 230)/(16 - 1)-14.5333 6.4 (8/16/2017)230 (2/18/2008)(6.4 - 230)/(17 - 1)-13.975 30 (2/19/2018)230 (2/18/2008)(30 - 230)/(18 - 1)-11.7647 43 (8/14/2018)230 (2/18/2008)(43 - 230)/(19 - 1)-10.3889 12 (8/24/2010)8.1 (8/20/2009)(12 - 8.1)/(3 - 2)3.9 10 (2/23/2011)8.1 (8/20/2009)(10 - 8.1)/(4 - 2)0.95 112 (8/24/2011)8.1 (8/20/2009)(112 - 8.1)/(5 - 2)34.6333 36 (2/21/2012)8.1 (8/20/2009)(36 - 8.1)/(6 - 2)6.975 20 (8/28/2012)8.1 (8/20/2009)(20 - 8.1)/(7 - 2)2.38 16 (2/19/2013)8.1 (8/20/2009)(16 - 8.1)/(8 - 2)1.31667 11 (8/28/2013)8.1 (8/20/2009)(11 - 8.1)/(9 - 2)0.414286 23 (2/24/2014)8.1 (8/20/2009)(23 - 8.1)/(10 - 2)1.8625 19 (8/5/2014)8.1 (8/20/2009)(19 - 8.1)/(11 - 2)1.21111 8.6 (2/10/2015)8.1 (8/20/2009)(8.6 - 8.1)/(12 - 2)0.05 19 (8/25/2015)8.1 (8/20/2009)(19 - 8.1)/(13 - 2)0.990909 33 (2/25/2016)8.1 (8/20/2009)(33 - 8.1)/(14 - 2)2.075 9.3 (8/10/2016)8.1 (8/20/2009)(9.3 - 8.1)/(15 - 2)0.0923077 12 (2/16/2017)8.1 (8/20/2009)(12 - 8.1)/(16 - 2)0.278571 6.4 (8/16/2017)8.1 (8/20/2009)(6.4 - 8.1)/(17 - 2)-0.113333 30 (2/19/2018)8.1 (8/20/2009)(30 - 8.1)/(18 - 2)1.36875 43 (8/14/2018)8.1 (8/20/2009)(43 - 8.1)/(19 - 2)2.05294 10 (2/23/2011)12 (8/24/2010)(10 - 12)/(4 - 3)-2 112 (8/24/2011)12 (8/24/2010)(112 - 12)/(5 - 3)50 36 (2/21/2012)12 (8/24/2010)(36 - 12)/(6 - 3)8 20 (8/28/2012)12 (8/24/2010)(20 - 12)/(7 - 3)2 16 (2/19/2013)12 (8/24/2010)(16 - 12)/(8 - 3)0.8 11 (8/28/2013)12 (8/24/2010)(11 - 12)/(9 - 3)-0.166667 23 (2/24/2014)12 (8/24/2010)(23 - 12)/(10 - 3)1.57143 19 (8/5/2014)12 (8/24/2010)(19 - 12)/(11 - 3)0.875 8.6 (2/10/2015)12 (8/24/2010)(8.6 - 12)/(12 - 3)-0.377778 19 (8/25/2015)12 (8/24/2010)(19 - 12)/(13 - 3)0.7 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 9 33 (2/25/2016)12 (8/24/2010)(33 - 12)/(14 - 3)1.90909 9.3 (8/10/2016)12 (8/24/2010)(9.3 - 12)/(15 - 3)-0.225 12 (2/16/2017)12 (8/24/2010)(12 - 12)/(16 - 3)0 6.4 (8/16/2017)12 (8/24/2010)(6.4 - 12)/(17 - 3)-0.4 30 (2/19/2018)12 (8/24/2010)(30 - 12)/(18 - 3)1.2 43 (8/14/2018)12 (8/24/2010)(43 - 12)/(19 - 3)1.9375 112 (8/24/2011)10 (2/23/2011)(112 - 10)/(5 - 4)102 36 (2/21/2012)10 (2/23/2011)(36 - 10)/(6 - 4)13 20 (8/28/2012)10 (2/23/2011)(20 - 10)/(7 - 4)3.33333 16 (2/19/2013)10 (2/23/2011)(16 - 10)/(8 - 4)1.5 11 (8/28/2013)10 (2/23/2011)(11 - 10)/(9 - 4)0.2 23 (2/24/2014)10 (2/23/2011)(23 - 10)/(10 - 4)2.16667 19 (8/5/2014)10 (2/23/2011)(19 - 10)/(11 - 4)1.28571 8.6 (2/10/2015)10 (2/23/2011)(8.6 - 10)/(12 - 4)-0.175 19 (8/25/2015)10 (2/23/2011)(19 - 10)/(13 - 4)1 33 (2/25/2016)10 (2/23/2011)(33 - 10)/(14 - 4)2.3 9.3 (8/10/2016)10 (2/23/2011)(9.3 - 10)/(15 - 4)-0.0636364 12 (2/16/2017)10 (2/23/2011)(12 - 10)/(16 - 4)0.166667 6.4 (8/16/2017)10 (2/23/2011)(6.4 - 10)/(17 - 4)-0.276923 30 (2/19/2018)10 (2/23/2011)(30 - 10)/(18 - 4)1.42857 43 (8/14/2018)10 (2/23/2011)(43 - 10)/(19 - 4)2.2 36 (2/21/2012)112 (8/24/2011)(36 - 112)/(6 - 5)-76 20 (8/28/2012)112 (8/24/2011)(20 - 112)/(7 - 5)-46 16 (2/19/2013)112 (8/24/2011)(16 - 112)/(8 - 5)-32 11 (8/28/2013)112 (8/24/2011)(11 - 112)/(9 - 5)-25.25 23 (2/24/2014)112 (8/24/2011)(23 - 112)/(10 - 5)-17.8 19 (8/5/2014)112 (8/24/2011)(19 - 112)/(11 - 5)-15.5 8.6 (2/10/2015)112 (8/24/2011)(8.6 - 112)/(12 - 5)-14.7714 19 (8/25/2015)112 (8/24/2011)(19 - 112)/(13 - 5)-11.625 33 (2/25/2016)112 (8/24/2011)(33 - 112)/(14 - 5)-8.77778 9.3 (8/10/2016)112 (8/24/2011)(9.3 - 112)/(15 - 5)-10.27 12 (2/16/2017)112 (8/24/2011)(12 - 112)/(16 - 5)-9.09091 6.4 (8/16/2017)112 (8/24/2011)(6.4 - 112)/(17 - 5)-8.8 30 (2/19/2018)112 (8/24/2011)(30 - 112)/(18 - 5)-6.30769 43 (8/14/2018)112 (8/24/2011)(43 - 112)/(19 - 5)-4.92857 20 (8/28/2012)36 (2/21/2012)(20 - 36)/(7 - 6)-16 16 (2/19/2013)36 (2/21/2012)(16 - 36)/(8 - 6)-10 11 (8/28/2013)36 (2/21/2012)(11 - 36)/(9 - 6)-8.33333 23 (2/24/2014)36 (2/21/2012)(23 - 36)/(10 - 6)-3.25 19 (8/5/2014)36 (2/21/2012)(19 - 36)/(11 - 6)-3.4 8.6 (2/10/2015)36 (2/21/2012)(8.6 - 36)/(12 - 6)-4.56667 19 (8/25/2015)36 (2/21/2012)(19 - 36)/(13 - 6)-2.42857 33 (2/25/2016)36 (2/21/2012)(33 - 36)/(14 - 6)-0.375 9.3 (8/10/2016)36 (2/21/2012)(9.3 - 36)/(15 - 6)-2.96667 12 (2/16/2017)36 (2/21/2012)(12 - 36)/(16 - 6)-2.4 6.4 (8/16/2017)36 (2/21/2012)(6.4 - 36)/(17 - 6)-2.69091 30 (2/19/2018)36 (2/21/2012)(30 - 36)/(18 - 6)-0.5 43 (8/14/2018)36 (2/21/2012)(43 - 36)/(19 - 6)0.538462 16 (2/19/2013)20 (8/28/2012)(16 - 20)/(8 - 7)-4 11 (8/28/2013)20 (8/28/2012)(11 - 20)/(9 - 7)-4.5 23 (2/24/2014)20 (8/28/2012)(23 - 20)/(10 - 7)1 19 (8/5/2014)20 (8/28/2012)(19 - 20)/(11 - 7)-0.25 8.6 (2/10/2015)20 (8/28/2012)(8.6 - 20)/(12 - 7)-2.28 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 10 19 (8/25/2015)20 (8/28/2012)(19 - 20)/(13 - 7)-0.166667 33 (2/25/2016)20 (8/28/2012)(33 - 20)/(14 - 7)1.85714 9.3 (8/10/2016)20 (8/28/2012)(9.3 - 20)/(15 - 7)-1.3375 12 (2/16/2017)20 (8/28/2012)(12 - 20)/(16 - 7)-0.888889 6.4 (8/16/2017)20 (8/28/2012)(6.4 - 20)/(17 - 7)-1.36 30 (2/19/2018)20 (8/28/2012)(30 - 20)/(18 - 7)0.909091 43 (8/14/2018)20 (8/28/2012)(43 - 20)/(19 - 7)1.91667 11 (8/28/2013)16 (2/19/2013)(11 - 16)/(9 - 8)-5 23 (2/24/2014)16 (2/19/2013)(23 - 16)/(10 - 8)3.5 19 (8/5/2014)16 (2/19/2013)(19 - 16)/(11 - 8)1 8.6 (2/10/2015)16 (2/19/2013)(8.6 - 16)/(12 - 8)-1.85 19 (8/25/2015)16 (2/19/2013)(19 - 16)/(13 - 8)0.6 33 (2/25/2016)16 (2/19/2013)(33 - 16)/(14 - 8)2.83333 9.3 (8/10/2016)16 (2/19/2013)(9.3 - 16)/(15 - 8)-0.957143 12 (2/16/2017)16 (2/19/2013)(12 - 16)/(16 - 8)-0.5 6.4 (8/16/2017)16 (2/19/2013)(6.4 - 16)/(17 - 8)-1.06667 30 (2/19/2018)16 (2/19/2013)(30 - 16)/(18 - 8)1.4 43 (8/14/2018)16 (2/19/2013)(43 - 16)/(19 - 8)2.45455 23 (2/24/2014)11 (8/28/2013)(23 - 11)/(10 - 9)12 19 (8/5/2014)11 (8/28/2013)(19 - 11)/(11 - 9)4 8.6 (2/10/2015)11 (8/28/2013)(8.6 - 11)/(12 - 9)-0.8 19 (8/25/2015)11 (8/28/2013)(19 - 11)/(13 - 9)2 33 (2/25/2016)11 (8/28/2013)(33 - 11)/(14 - 9)4.4 9.3 (8/10/2016)11 (8/28/2013)(9.3 - 11)/(15 - 9)-0.283333 12 (2/16/2017)11 (8/28/2013)(12 - 11)/(16 - 9)0.142857 6.4 (8/16/2017)11 (8/28/2013)(6.4 - 11)/(17 - 9)-0.575 30 (2/19/2018)11 (8/28/2013)(30 - 11)/(18 - 9)2.11111 43 (8/14/2018)11 (8/28/2013)(43 - 11)/(19 - 9)3.2 19 (8/5/2014)23 (2/24/2014)(19 - 23)/(11 - 10)-4 8.6 (2/10/2015)23 (2/24/2014)(8.6 - 23)/(12 - 10)-7.2 19 (8/25/2015)23 (2/24/2014)(19 - 23)/(13 - 10)-1.33333 33 (2/25/2016)23 (2/24/2014)(33 - 23)/(14 - 10)2.5 9.3 (8/10/2016)23 (2/24/2014)(9.3 - 23)/(15 - 10)-2.74 12 (2/16/2017)23 (2/24/2014)(12 - 23)/(16 - 10)-1.83333 6.4 (8/16/2017)23 (2/24/2014)(6.4 - 23)/(17 - 10)-2.37143 30 (2/19/2018)23 (2/24/2014)(30 - 23)/(18 - 10)0.875 43 (8/14/2018)23 (2/24/2014)(43 - 23)/(19 - 10)2.22222 8.6 (2/10/2015)19 (8/5/2014)(8.6 - 19)/(12 - 11)-10.4 19 (8/25/2015)19 (8/5/2014)(19 - 19)/(13 - 11)0 33 (2/25/2016)19 (8/5/2014)(33 - 19)/(14 - 11)4.66667 9.3 (8/10/2016)19 (8/5/2014)(9.3 - 19)/(15 - 11)-2.425 12 (2/16/2017)19 (8/5/2014)(12 - 19)/(16 - 11)-1.4 6.4 (8/16/2017)19 (8/5/2014)(6.4 - 19)/(17 - 11)-2.1 30 (2/19/2018)19 (8/5/2014)(30 - 19)/(18 - 11)1.57143 43 (8/14/2018)19 (8/5/2014)(43 - 19)/(19 - 11)3 19 (8/25/2015)8.6 (2/10/2015)(19 - 8.6)/(13 - 12)10.4 33 (2/25/2016)8.6 (2/10/2015)(33 - 8.6)/(14 - 12)12.2 9.3 (8/10/2016)8.6 (2/10/2015)(9.3 - 8.6)/(15 - 12)0.233333 12 (2/16/2017)8.6 (2/10/2015)(12 - 8.6)/(16 - 12)0.85 6.4 (8/16/2017)8.6 (2/10/2015)(6.4 - 8.6)/(17 - 12)-0.44 30 (2/19/2018)8.6 (2/10/2015)(30 - 8.6)/(18 - 12)3.56667 43 (8/14/2018)8.6 (2/10/2015)(43 - 8.6)/(19 - 12)4.91429 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 11 33 (2/25/2016)19 (8/25/2015)(33 - 19)/(14 - 13)14 9.3 (8/10/2016)19 (8/25/2015)(9.3 - 19)/(15 - 13)-4.85 12 (2/16/2017)19 (8/25/2015)(12 - 19)/(16 - 13)-2.33333 6.4 (8/16/2017)19 (8/25/2015)(6.4 - 19)/(17 - 13)-3.15 30 (2/19/2018)19 (8/25/2015)(30 - 19)/(18 - 13)2.2 43 (8/14/2018)19 (8/25/2015)(43 - 19)/(19 - 13)4 9.3 (8/10/2016)33 (2/25/2016)(9.3 - 33)/(15 - 14)-23.7 12 (2/16/2017)33 (2/25/2016)(12 - 33)/(16 - 14)-10.5 6.4 (8/16/2017)33 (2/25/2016)(6.4 - 33)/(17 - 14)-8.86667 30 (2/19/2018)33 (2/25/2016)(30 - 33)/(18 - 14)-0.75 43 (8/14/2018)33 (2/25/2016)(43 - 33)/(19 - 14)2 12 (2/16/2017)9.3 (8/10/2016)(12 - 9.3)/(16 - 15)2.7 6.4 (8/16/2017)9.3 (8/10/2016)(6.4 - 9.3)/(17 - 15)-1.45 30 (2/19/2018)9.3 (8/10/2016)(30 - 9.3)/(18 - 15)6.9 43 (8/14/2018)9.3 (8/10/2016)(43 - 9.3)/(19 - 15)8.425 6.4 (8/16/2017)12 (2/16/2017)(6.4 - 12)/(17 - 16)-5.6 30 (2/19/2018)12 (2/16/2017)(30 - 12)/(18 - 16)9 43 (8/14/2018)12 (2/16/2017)(43 - 12)/(19 - 16)10.3333 30 (2/19/2018)6.4 (8/16/2017)(30 - 6.4)/(18 - 17)23.6 43 (8/14/2018)6.4 (8/16/2017)(43 - 6.4)/(19 - 17)18.3 43 (8/14/2018)30 (2/19/2018)(43 - 30)/(19 - 18)13 Number of Q values = 171 Ordered Q Values n Q 1 -221.9 2 -109 3 -76 4 -73.3333 5 -46 6 -38.8 7 -35 8 -32 9 -30.5714 10 -29.5 11 -27.375 12 -25.25 13 -23.7 14 -23 15 -21.1 16 -20.1273 17 -17.8 18 -17.5833 19 -16 20 -15.7643 21 -15.5 22 -15.1538 23 -14.7714 24 -14.5333 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 12 25 -13.975 26 -11.7647 27 -11.625 28 -10.5 29 -10.4 30 -10.3889 31 -10.27 32 -10 33 -9.09091 34 -8.86667 35 -8.8 36 -8.77778 37 -8.33333 38 -7.2 39 -6.30769 40 -5.6 41 -5 42 -4.92857 43 -4.85 44 -4.56667 45 -4.5 46 -4 47 -4 48 -3.4 49 -3.25 50 -3.15 51 -2.96667 52 -2.74 53 -2.69091 54 -2.42857 55 -2.425 56 -2.4 57 -2.37143 58 -2.33333 59 -2.28 60 -2.1 61 -2 62 -1.85 63 -1.83333 64 -1.45 65 -1.4 66 -1.36 67 -1.3375 68 -1.33333 69 -1.06667 70 -0.957143 71 -0.888889 72 -0.8 73 -0.75 74 -0.575 75 -0.5 76 -0.5 77 -0.44 78 -0.4 79 -0.377778 80 -0.375 81 -0.283333 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 13 82 -0.276923 83 -0.25 84 -0.225 85 -0.175 86 -0.166667 87 -0.166667 88 -0.113333 89 -0.0636364 90 0 91 0 92 0.05 93 0.0923077 94 0.142857 95 0.166667 96 0.2 97 0.233333 98 0.278571 99 0.414286 100 0.538462 101 0.6 102 0.7 103 0.8 104 0.85 105 0.875 106 0.875 107 0.909091 108 0.95 109 0.990909 110 1 111 1 112 1 113 1.2 114 1.21111 115 1.28571 116 1.31667 117 1.36875 118 1.4 119 1.42857 120 1.5 121 1.57143 122 1.57143 123 1.85714 124 1.8625 125 1.90909 126 1.91667 127 1.9375 128 2 129 2 130 2 131 2.05294 132 2.075 133 2.11111 134 2.16667 135 2.2 136 2.2 137 2.22222 138 2.3 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 14 139 2.38 140 2.45455 141 2.5 142 2.7 143 2.83333 144 3 145 3.2 146 3.33333 147 3.5 148 3.56667 149 3.9 150 4 151 4 152 4.4 153 4.66667 154 4.91429 155 6.9 156 6.975 157 8 158 8.425 159 9 160 10.3333 161 10.4 162 12 163 12.2 164 13 165 13 166 14 167 18.3 168 23.6 169 34.6333 170 50 171 102 Sen's Estimator (Median Q) is -0.166667 Tied Group Value Members 1 12 2 2 19 2 Time Period Observations 2/18/2008 1 8/20/2009 1 8/24/2010 1 2/23/2011 1 8/24/2011 1 2/21/2012 1 8/28/2012 1 2/19/2013 1 8/28/2013 1 2/24/2014 1 8/5/2014 1 2/10/2015 1 8/25/2015 1 2/25/2016 1 8/10/2016 1 2/16/2017 1 8/16/2017 1 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 15 2/19/2018 1 8/14/2018 1 There are 0 time periods with multiple data A = 36 B = 0 C = 0 D = 0 E = 4 F = 0 a = 14706 b = 52326 c = 684 Group Variance = 815 For 90% confidence interval (two-tailed), Z at (1-0.9)/2 = 1.64485 C = 46.9576 M1 = (171 - 46.9576)/2.0 = 62.0212 M2 = (171 + 46.9576)/2.0 + 1 = 109.979 Lower limit is -1.85 = Q(62) Upper limit is 1 = Q(110) -1.85 < 0 < 1 indicating no trend in data. DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 16 Sen's Slope Analysis Parameter: Zinc Location: MW-17 Original Data (Not Transformed) Non-Detects Replaced with Detection Limit 90% Confidence Level Xj Xk (Xj - Xk)/(j-k)Q 23 (8/20/2009)77 (2/18/2008)(23 - 77)/(2 - 1)-54 12 (8/24/2010)77 (2/18/2008)(12 - 77)/(3 - 1)-32.5 8.3 (2/23/2011)77 (2/18/2008)(8.3 - 77)/(4 - 1)-22.9 46 (8/24/2011)77 (2/18/2008)(46 - 77)/(5 - 1)-7.75 41 (2/21/2012)77 (2/18/2008)(41 - 77)/(6 - 1)-7.2 21 (8/28/2012)77 (2/18/2008)(21 - 77)/(7 - 1)-9.33333 8.1 (2/19/2013)77 (2/18/2008)(8.1 - 77)/(8 - 1)-9.84286 13 (8/28/2013)77 (2/18/2008)(13 - 77)/(9 - 1)-8 21 (2/24/2014)77 (2/18/2008)(21 - 77)/(10 - 1)-6.22222 6.4 (8/5/2014)77 (2/18/2008)(6.4 - 77)/(11 - 1)-7.06 21 (2/10/2015)77 (2/18/2008)(21 - 77)/(12 - 1)-5.09091 6.7 (8/25/2015)77 (2/18/2008)(6.7 - 77)/(13 - 1)-5.85833 16 (2/25/2016)77 (2/18/2008)(16 - 77)/(14 - 1)-4.69231 6.9 (8/10/2016)77 (2/18/2008)(6.9 - 77)/(15 - 1)-5.00714 5.2 (2/16/2017)77 (2/18/2008)(5.2 - 77)/(16 - 1)-4.78667 12 (8/16/2017)77 (2/18/2008)(12 - 77)/(17 - 1)-4.0625 5.6 (2/19/2018)77 (2/18/2008)(5.6 - 77)/(18 - 1)-4.2 4.6 (8/14/2018)77 (2/18/2008)(4.6 - 77)/(19 - 1)-4.02222 12 (8/24/2010)23 (8/20/2009)(12 - 23)/(3 - 2)-11 8.3 (2/23/2011)23 (8/20/2009)(8.3 - 23)/(4 - 2)-7.35 46 (8/24/2011)23 (8/20/2009)(46 - 23)/(5 - 2)7.66667 41 (2/21/2012)23 (8/20/2009)(41 - 23)/(6 - 2)4.5 21 (8/28/2012)23 (8/20/2009)(21 - 23)/(7 - 2)-0.4 8.1 (2/19/2013)23 (8/20/2009)(8.1 - 23)/(8 - 2)-2.48333 13 (8/28/2013)23 (8/20/2009)(13 - 23)/(9 - 2)-1.42857 21 (2/24/2014)23 (8/20/2009)(21 - 23)/(10 - 2)-0.25 6.4 (8/5/2014)23 (8/20/2009)(6.4 - 23)/(11 - 2)-1.84444 21 (2/10/2015)23 (8/20/2009)(21 - 23)/(12 - 2)-0.2 6.7 (8/25/2015)23 (8/20/2009)(6.7 - 23)/(13 - 2)-1.48182 16 (2/25/2016)23 (8/20/2009)(16 - 23)/(14 - 2)-0.583333 6.9 (8/10/2016)23 (8/20/2009)(6.9 - 23)/(15 - 2)-1.23846 5.2 (2/16/2017)23 (8/20/2009)(5.2 - 23)/(16 - 2)-1.27143 12 (8/16/2017)23 (8/20/2009)(12 - 23)/(17 - 2)-0.733333 5.6 (2/19/2018)23 (8/20/2009)(5.6 - 23)/(18 - 2)-1.0875 4.6 (8/14/2018)23 (8/20/2009)(4.6 - 23)/(19 - 2)-1.08235 8.3 (2/23/2011)12 (8/24/2010)(8.3 - 12)/(4 - 3)-3.7 46 (8/24/2011)12 (8/24/2010)(46 - 12)/(5 - 3)17 41 (2/21/2012)12 (8/24/2010)(41 - 12)/(6 - 3)9.66667 21 (8/28/2012)12 (8/24/2010)(21 - 12)/(7 - 3)2.25 8.1 (2/19/2013)12 (8/24/2010)(8.1 - 12)/(8 - 3)-0.78 13 (8/28/2013)12 (8/24/2010)(13 - 12)/(9 - 3)0.166667 21 (2/24/2014)12 (8/24/2010)(21 - 12)/(10 - 3)1.28571 6.4 (8/5/2014)12 (8/24/2010)(6.4 - 12)/(11 - 3)-0.7 21 (2/10/2015)12 (8/24/2010)(21 - 12)/(12 - 3)1 6.7 (8/25/2015)12 (8/24/2010)(6.7 - 12)/(13 - 3)-0.53 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 17 16 (2/25/2016)12 (8/24/2010)(16 - 12)/(14 - 3)0.363636 6.9 (8/10/2016)12 (8/24/2010)(6.9 - 12)/(15 - 3)-0.425 5.2 (2/16/2017)12 (8/24/2010)(5.2 - 12)/(16 - 3)-0.523077 12 (8/16/2017)12 (8/24/2010)(12 - 12)/(17 - 3)0 5.6 (2/19/2018)12 (8/24/2010)(5.6 - 12)/(18 - 3)-0.426667 4.6 (8/14/2018)12 (8/24/2010)(4.6 - 12)/(19 - 3)-0.4625 46 (8/24/2011)8.3 (2/23/2011)(46 - 8.3)/(5 - 4)37.7 41 (2/21/2012)8.3 (2/23/2011)(41 - 8.3)/(6 - 4)16.35 21 (8/28/2012)8.3 (2/23/2011)(21 - 8.3)/(7 - 4)4.23333 8.1 (2/19/2013)8.3 (2/23/2011)(8.1 - 8.3)/(8 - 4)-0.05 13 (8/28/2013)8.3 (2/23/2011)(13 - 8.3)/(9 - 4)0.94 21 (2/24/2014)8.3 (2/23/2011)(21 - 8.3)/(10 - 4)2.11667 6.4 (8/5/2014)8.3 (2/23/2011)(6.4 - 8.3)/(11 - 4)-0.271429 21 (2/10/2015)8.3 (2/23/2011)(21 - 8.3)/(12 - 4)1.5875 6.7 (8/25/2015)8.3 (2/23/2011)(6.7 - 8.3)/(13 - 4)-0.177778 16 (2/25/2016)8.3 (2/23/2011)(16 - 8.3)/(14 - 4)0.77 6.9 (8/10/2016)8.3 (2/23/2011)(6.9 - 8.3)/(15 - 4)-0.127273 5.2 (2/16/2017)8.3 (2/23/2011)(5.2 - 8.3)/(16 - 4)-0.258333 12 (8/16/2017)8.3 (2/23/2011)(12 - 8.3)/(17 - 4)0.284615 5.6 (2/19/2018)8.3 (2/23/2011)(5.6 - 8.3)/(18 - 4)-0.192857 4.6 (8/14/2018)8.3 (2/23/2011)(4.6 - 8.3)/(19 - 4)-0.246667 41 (2/21/2012)46 (8/24/2011)(41 - 46)/(6 - 5)-5 21 (8/28/2012)46 (8/24/2011)(21 - 46)/(7 - 5)-12.5 8.1 (2/19/2013)46 (8/24/2011)(8.1 - 46)/(8 - 5)-12.6333 13 (8/28/2013)46 (8/24/2011)(13 - 46)/(9 - 5)-8.25 21 (2/24/2014)46 (8/24/2011)(21 - 46)/(10 - 5)-5 6.4 (8/5/2014)46 (8/24/2011)(6.4 - 46)/(11 - 5)-6.6 21 (2/10/2015)46 (8/24/2011)(21 - 46)/(12 - 5)-3.57143 6.7 (8/25/2015)46 (8/24/2011)(6.7 - 46)/(13 - 5)-4.9125 16 (2/25/2016)46 (8/24/2011)(16 - 46)/(14 - 5)-3.33333 6.9 (8/10/2016)46 (8/24/2011)(6.9 - 46)/(15 - 5)-3.91 5.2 (2/16/2017)46 (8/24/2011)(5.2 - 46)/(16 - 5)-3.70909 12 (8/16/2017)46 (8/24/2011)(12 - 46)/(17 - 5)-2.83333 5.6 (2/19/2018)46 (8/24/2011)(5.6 - 46)/(18 - 5)-3.10769 4.6 (8/14/2018)46 (8/24/2011)(4.6 - 46)/(19 - 5)-2.95714 21 (8/28/2012)41 (2/21/2012)(21 - 41)/(7 - 6)-20 8.1 (2/19/2013)41 (2/21/2012)(8.1 - 41)/(8 - 6)-16.45 13 (8/28/2013)41 (2/21/2012)(13 - 41)/(9 - 6)-9.33333 21 (2/24/2014)41 (2/21/2012)(21 - 41)/(10 - 6)-5 6.4 (8/5/2014)41 (2/21/2012)(6.4 - 41)/(11 - 6)-6.92 21 (2/10/2015)41 (2/21/2012)(21 - 41)/(12 - 6)-3.33333 6.7 (8/25/2015)41 (2/21/2012)(6.7 - 41)/(13 - 6)-4.9 16 (2/25/2016)41 (2/21/2012)(16 - 41)/(14 - 6)-3.125 6.9 (8/10/2016)41 (2/21/2012)(6.9 - 41)/(15 - 6)-3.78889 5.2 (2/16/2017)41 (2/21/2012)(5.2 - 41)/(16 - 6)-3.58 12 (8/16/2017)41 (2/21/2012)(12 - 41)/(17 - 6)-2.63636 5.6 (2/19/2018)41 (2/21/2012)(5.6 - 41)/(18 - 6)-2.95 4.6 (8/14/2018)41 (2/21/2012)(4.6 - 41)/(19 - 6)-2.8 8.1 (2/19/2013)21 (8/28/2012)(8.1 - 21)/(8 - 7)-12.9 13 (8/28/2013)21 (8/28/2012)(13 - 21)/(9 - 7)-4 21 (2/24/2014)21 (8/28/2012)(21 - 21)/(10 - 7)0 6.4 (8/5/2014)21 (8/28/2012)(6.4 - 21)/(11 - 7)-3.65 21 (2/10/2015)21 (8/28/2012)(21 - 21)/(12 - 7)0 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 18 6.7 (8/25/2015)21 (8/28/2012)(6.7 - 21)/(13 - 7)-2.38333 16 (2/25/2016)21 (8/28/2012)(16 - 21)/(14 - 7)-0.714286 6.9 (8/10/2016)21 (8/28/2012)(6.9 - 21)/(15 - 7)-1.7625 5.2 (2/16/2017)21 (8/28/2012)(5.2 - 21)/(16 - 7)-1.75556 12 (8/16/2017)21 (8/28/2012)(12 - 21)/(17 - 7)-0.9 5.6 (2/19/2018)21 (8/28/2012)(5.6 - 21)/(18 - 7)-1.4 4.6 (8/14/2018)21 (8/28/2012)(4.6 - 21)/(19 - 7)-1.36667 13 (8/28/2013)8.1 (2/19/2013)(13 - 8.1)/(9 - 8)4.9 21 (2/24/2014)8.1 (2/19/2013)(21 - 8.1)/(10 - 8)6.45 6.4 (8/5/2014)8.1 (2/19/2013)(6.4 - 8.1)/(11 - 8)-0.566667 21 (2/10/2015)8.1 (2/19/2013)(21 - 8.1)/(12 - 8)3.225 6.7 (8/25/2015)8.1 (2/19/2013)(6.7 - 8.1)/(13 - 8)-0.28 16 (2/25/2016)8.1 (2/19/2013)(16 - 8.1)/(14 - 8)1.31667 6.9 (8/10/2016)8.1 (2/19/2013)(6.9 - 8.1)/(15 - 8)-0.171429 5.2 (2/16/2017)8.1 (2/19/2013)(5.2 - 8.1)/(16 - 8)-0.3625 12 (8/16/2017)8.1 (2/19/2013)(12 - 8.1)/(17 - 8)0.433333 5.6 (2/19/2018)8.1 (2/19/2013)(5.6 - 8.1)/(18 - 8)-0.25 4.6 (8/14/2018)8.1 (2/19/2013)(4.6 - 8.1)/(19 - 8)-0.318182 21 (2/24/2014)13 (8/28/2013)(21 - 13)/(10 - 9)8 6.4 (8/5/2014)13 (8/28/2013)(6.4 - 13)/(11 - 9)-3.3 21 (2/10/2015)13 (8/28/2013)(21 - 13)/(12 - 9)2.66667 6.7 (8/25/2015)13 (8/28/2013)(6.7 - 13)/(13 - 9)-1.575 16 (2/25/2016)13 (8/28/2013)(16 - 13)/(14 - 9)0.6 6.9 (8/10/2016)13 (8/28/2013)(6.9 - 13)/(15 - 9)-1.01667 5.2 (2/16/2017)13 (8/28/2013)(5.2 - 13)/(16 - 9)-1.11429 12 (8/16/2017)13 (8/28/2013)(12 - 13)/(17 - 9)-0.125 5.6 (2/19/2018)13 (8/28/2013)(5.6 - 13)/(18 - 9)-0.822222 4.6 (8/14/2018)13 (8/28/2013)(4.6 - 13)/(19 - 9)-0.84 6.4 (8/5/2014)21 (2/24/2014)(6.4 - 21)/(11 - 10)-14.6 21 (2/10/2015)21 (2/24/2014)(21 - 21)/(12 - 10)0 6.7 (8/25/2015)21 (2/24/2014)(6.7 - 21)/(13 - 10)-4.76667 16 (2/25/2016)21 (2/24/2014)(16 - 21)/(14 - 10)-1.25 6.9 (8/10/2016)21 (2/24/2014)(6.9 - 21)/(15 - 10)-2.82 5.2 (2/16/2017)21 (2/24/2014)(5.2 - 21)/(16 - 10)-2.63333 12 (8/16/2017)21 (2/24/2014)(12 - 21)/(17 - 10)-1.28571 5.6 (2/19/2018)21 (2/24/2014)(5.6 - 21)/(18 - 10)-1.925 4.6 (8/14/2018)21 (2/24/2014)(4.6 - 21)/(19 - 10)-1.82222 21 (2/10/2015)6.4 (8/5/2014)(21 - 6.4)/(12 - 11)14.6 6.7 (8/25/2015)6.4 (8/5/2014)(6.7 - 6.4)/(13 - 11)0.15 16 (2/25/2016)6.4 (8/5/2014)(16 - 6.4)/(14 - 11)3.2 6.9 (8/10/2016)6.4 (8/5/2014)(6.9 - 6.4)/(15 - 11)0.125 5.2 (2/16/2017)6.4 (8/5/2014)(5.2 - 6.4)/(16 - 11)-0.24 12 (8/16/2017)6.4 (8/5/2014)(12 - 6.4)/(17 - 11)0.933333 5.6 (2/19/2018)6.4 (8/5/2014)(5.6 - 6.4)/(18 - 11)-0.114286 4.6 (8/14/2018)6.4 (8/5/2014)(4.6 - 6.4)/(19 - 11)-0.225 6.7 (8/25/2015)21 (2/10/2015)(6.7 - 21)/(13 - 12)-14.3 16 (2/25/2016)21 (2/10/2015)(16 - 21)/(14 - 12)-2.5 6.9 (8/10/2016)21 (2/10/2015)(6.9 - 21)/(15 - 12)-4.7 5.2 (2/16/2017)21 (2/10/2015)(5.2 - 21)/(16 - 12)-3.95 12 (8/16/2017)21 (2/10/2015)(12 - 21)/(17 - 12)-1.8 5.6 (2/19/2018)21 (2/10/2015)(5.6 - 21)/(18 - 12)-2.56667 4.6 (8/14/2018)21 (2/10/2015)(4.6 - 21)/(19 - 12)-2.34286 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 19 16 (2/25/2016)6.7 (8/25/2015)(16 - 6.7)/(14 - 13)9.3 6.9 (8/10/2016)6.7 (8/25/2015)(6.9 - 6.7)/(15 - 13)0.1 5.2 (2/16/2017)6.7 (8/25/2015)(5.2 - 6.7)/(16 - 13)-0.5 12 (8/16/2017)6.7 (8/25/2015)(12 - 6.7)/(17 - 13)1.325 5.6 (2/19/2018)6.7 (8/25/2015)(5.6 - 6.7)/(18 - 13)-0.22 4.6 (8/14/2018)6.7 (8/25/2015)(4.6 - 6.7)/(19 - 13)-0.35 6.9 (8/10/2016)16 (2/25/2016)(6.9 - 16)/(15 - 14)-9.1 5.2 (2/16/2017)16 (2/25/2016)(5.2 - 16)/(16 - 14)-5.4 12 (8/16/2017)16 (2/25/2016)(12 - 16)/(17 - 14)-1.33333 5.6 (2/19/2018)16 (2/25/2016)(5.6 - 16)/(18 - 14)-2.6 4.6 (8/14/2018)16 (2/25/2016)(4.6 - 16)/(19 - 14)-2.28 5.2 (2/16/2017)6.9 (8/10/2016)(5.2 - 6.9)/(16 - 15)-1.7 12 (8/16/2017)6.9 (8/10/2016)(12 - 6.9)/(17 - 15)2.55 5.6 (2/19/2018)6.9 (8/10/2016)(5.6 - 6.9)/(18 - 15)-0.433333 4.6 (8/14/2018)6.9 (8/10/2016)(4.6 - 6.9)/(19 - 15)-0.575 12 (8/16/2017)5.2 (2/16/2017)(12 - 5.2)/(17 - 16)6.8 5.6 (2/19/2018)5.2 (2/16/2017)(5.6 - 5.2)/(18 - 16)0.2 4.6 (8/14/2018)5.2 (2/16/2017)(4.6 - 5.2)/(19 - 16)-0.2 5.6 (2/19/2018)12 (8/16/2017)(5.6 - 12)/(18 - 17)-6.4 4.6 (8/14/2018)12 (8/16/2017)(4.6 - 12)/(19 - 17)-3.7 4.6 (8/14/2018)5.6 (2/19/2018)(4.6 - 5.6)/(19 - 18)-1 Number of Q values = 171 Ordered Q Values n Q 1 -54 2 -32.5 3 -22.9 4 -20 5 -16.45 6 -14.6 7 -14.3 8 -12.9 9 -12.6333 10 -12.5 11 -11 12 -9.84286 13 -9.33333 14 -9.33333 15 -9.1 16 -8.25 17 -8 18 -7.75 19 -7.35 20 -7.2 21 -7.06 22 -6.92 23 -6.6 24 -6.4 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 20 25 -6.22222 26 -5.85833 27 -5.4 28 -5.09091 29 -5.00714 30 -5 31 -5 32 -5 33 -4.9125 34 -4.9 35 -4.78667 36 -4.76667 37 -4.7 38 -4.69231 39 -4.2 40 -4.0625 41 -4.02222 42 -4 43 -3.95 44 -3.91 45 -3.78889 46 -3.70909 47 -3.7 48 -3.7 49 -3.65 50 -3.58 51 -3.57143 52 -3.33333 53 -3.33333 54 -3.3 55 -3.125 56 -3.10769 57 -2.95714 58 -2.95 59 -2.83333 60 -2.82 61 -2.8 62 -2.63636 63 -2.63333 64 -2.6 65 -2.56667 66 -2.5 67 -2.48333 68 -2.38333 69 -2.34286 70 -2.28 71 -1.925 72 -1.84444 73 -1.82222 74 -1.8 75 -1.7625 76 -1.75556 77 -1.7 78 -1.575 79 -1.48182 80 -1.42857 81 -1.4 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 21 82 -1.36667 83 -1.33333 84 -1.28571 85 -1.27143 86 -1.25 87 -1.23846 88 -1.11429 89 -1.0875 90 -1.08235 91 -1.01667 92 -1 93 -0.9 94 -0.84 95 -0.822222 96 -0.78 97 -0.733333 98 -0.714286 99 -0.7 100 -0.583333 101 -0.575 102 -0.566667 103 -0.53 104 -0.523077 105 -0.5 106 -0.4625 107 -0.433333 108 -0.426667 109 -0.425 110 -0.4 111 -0.3625 112 -0.35 113 -0.318182 114 -0.28 115 -0.271429 116 -0.258333 117 -0.25 118 -0.25 119 -0.246667 120 -0.24 121 -0.225 122 -0.22 123 -0.2 124 -0.2 125 -0.192857 126 -0.177778 127 -0.171429 128 -0.127273 129 -0.125 130 -0.114286 131 -0.05 132 0 133 0 134 0 135 0 136 0.1 137 0.125 138 0.15 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 22 139 0.166667 140 0.2 141 0.284615 142 0.363636 143 0.433333 144 0.6 145 0.77 146 0.933333 147 0.94 148 1 149 1.28571 150 1.31667 151 1.325 152 1.5875 153 2.11667 154 2.25 155 2.55 156 2.66667 157 3.2 158 3.225 159 4.23333 160 4.5 161 4.9 162 6.45 163 6.8 164 7.66667 165 8 166 9.3 167 9.66667 168 14.6 169 16.35 170 17 171 37.7 Sen's Estimator (Median Q) is -1.25 Tied Group Value Members 1 12 2 2 21 3 Time Period Observations 2/18/2008 1 8/20/2009 1 8/24/2010 1 2/23/2011 1 8/24/2011 1 2/21/2012 1 8/28/2012 1 2/19/2013 1 8/28/2013 1 2/24/2014 1 8/5/2014 1 2/10/2015 1 8/25/2015 1 2/25/2016 1 8/10/2016 1 2/16/2017 1 8/16/2017 1 DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 23 2/19/2018 1 8/14/2018 1 There are 0 time periods with multiple data A = 84 B = 0 C = 6 D = 0 E = 8 F = 0 a = 14706 b = 52326 c = 684 Group Variance = 812.333 For 90% confidence interval (two-tailed), Z at (1-0.9)/2 = 1.64485 C = 46.8807 M1 = (171 - 46.8807)/2.0 = 62.0596 M2 = (171 + 46.8807)/2.0 + 1 = 109.94 Lower limit is -2.63636 = Q(62) Upper limit is -0.4 = Q(110) -0.4 < 0 indicating a downward trend in data. DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Page 24 Zinc Multi-Well Time-Series Graph Sample DateConcentration (ppb)0 50 100 150 200 250 300 MW- 8 MW- 9 MW-10 MW-11 MW-12 MW-172/18/20088/18/20092/16/20118/16/20122/14/20148/15/20152/12/20178/14/2018DocuSign Envelope ID: 9783B4F9-46B9-4725-B2BF-AD2D1A03FAC1 Certificate Of Completion Envelope Id: 9783B4F946B94725B2BFAD2D1A03FAC1 Status: Completed Subject: Please DocuSign: Annual 2018 Halifax Coal Ash Report.pdf Source Envelope: Document Pages: 316 Signatures: 2 Envelope Originator: Certificate Pages: 5 Initials: 0 Smith Gardner, Inc. AutoNav: Enabled EnvelopeId Stamping: Enabled Time Zone: (UTC-05:00) Eastern Time (US & Canada) 14 N. Boylan Ave Raleigh, NC 27603 docusign@smithgardnerinc.com IP Address: 24.106.183.110 Record Tracking Status: Original January 31, 2019 | 16:46 Holder: Smith Gardner, Inc. docusign@smithgardnerinc.com Location: DocuSign Signer Events Signature Timestamp Joan A. Smyth joan@smithgardnerinc.com Security Level: Email, Account Authentication (None) Signature Adoption: Pre-selected Style Using IP Address: 174.109.166.252 Sent: January 31, 2019 | 17:01 Viewed: January 31, 2019 | 17:02 Signed: January 31, 2019 | 17:02 Electronic Record and Signature Disclosure: Accepted: May 13, 2015 | 17:43 ID: 100b84f4-f457-48b3-9ed9-6baaaf82b8d5 Seth C. Rickerts seth@smithgardnerinc.com Security Level: Email, Account Authentication (None) Signature Adoption: Pre-selected Style Using IP Address: 24.106.183.110 Sent: January 31, 2019 | 17:01 Viewed: January 31, 2019 | 17:02 Signed: January 31, 2019 | 17:02 Electronic Record and Signature Disclosure: Accepted: June 22, 2018 | 08:57 ID: cecca368-dfc6-4ba6-bf52-aa81b281f40b In Person Signer Events Signature Timestamp Editor Delivery Events Status Timestamp Agent Delivery Events Status Timestamp Intermediary Delivery Events Status Timestamp Certified Delivery Events Status Timestamp Carbon Copy Events Status Timestamp Notary Events Signature Timestamp Envelope Summary Events Status Timestamps Envelope Sent Hashed/Encrypted January 31, 2019 | 17:01 Certified Delivered Security Checked January 31, 2019 | 17:02 Signing Complete Security Checked January 31, 2019 | 17:02 Envelope Summary Events Status Timestamps Completed Security Checked January 31, 2019 | 17:02 Payment Events Status Timestamps Electronic Record and Signature Disclosure ELECTRONIC RECORD AND SIGNATURE DISCLOSURE From time to time, Smith Gardner, Inc. 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