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HomeMy WebLinkAbout2601_CumberlandCoMSW_MetalsASD_DIN27005_20161108C u m b e r l a n d C o u n t y A n n S t r e e t L a n d f i l l S u b t i t l e D L a n d f i l l A l t e r n a t i v e S o u r c e D e m o n s t r a t i o n F a c i l i t y P e r m i t N o . 2 6 - 0 1 R e p o r t P r e p a r e d N o v e m b e r 2 0 1 6 5400 Glenwood Avenue, Suite 400 Raleigh, North Carolina 27612 tel: 919 325-3500 fax: 919 781-5730 November 8, 2016 Mr. Ervin Lane North Carolina Department of Environmental Quality Division of Waste Management Solid Waste Section 1646 Mail Service Center Raleigh, North Carolina 27699-1646 Subject: Cumberland County Ann Street Landfill Subtitle D Landfill Alternate Source Demonstration Facility Permit # 2601-MSWLF-1997 Dear Mr. Lane: CDM Smith Inc. (CDM Smith), on behalf of Cumberland County, is pleased to provide this Alternate Source Demonstration (ASD) for the Cumberland County Subtitle D Landfill. This ASD has been prepared in accordance with Solid Waste rule .1633(c)(3), to demonstrate that select metals exceeding the North Carolina 2L Groundwater Standards (NC2L) detected in monitoring wells at the site are naturally occurring and not related to a release from the facility. Site Background The Cumberland County Subtitle D Landfill is located at 698 Ann Street in Fayetteville, North Carolina. A site map is provided on Figure 1. The site is located within the Coastal Plain Physiographic Province. Sediments forming the Coastal Plain are characterized by mostly unconsolidated clastic materials ranging from clay to gravel with lesser amounts of marine limestone overlying a foundation of crystalline basement rocks. At the landfill site, a layer of surficial or alluvial soils are underlain by the Cape Fear confining unit which consists of stiff consolidated silty or sandy clays occasionally interbedded with medium to dense clayey sands. Borings completed at the site indicate that this unit within the Cape Fear extends to a depth greater than 70 feet below ground surface. Surficial alluvium ranges in thickness from approximately 6 feet on the western portion of the site to 39 feet in the eastern portion of the site. The alluvial or surficial soils consist of fine to coarse-grained silty sands and some interbedded clayey silts and silty clays. The silty clays and clayey silts are generally encountered in the top five to ten feet. Mr. Ervin Lane November 8, 2016 Page 2 The site is located in the Cape Fear River drainage basin, and is adjacent to the Cape Fear River. A series of ditches, excavated to the top of the Cape Fear Confining Unit, were installed around the perimeter of the adjacent closed unlined landfill for the purpose of dewatering the site. Surface water and groundwater drainage at the site is locally governed by these ditches, which discharge directly to Cross Creek and the Cape Fear River. Upgradient (background) and downgradient (compliance) groundwater monitoring wells have been installed surrounding the Subtitle D Landfill. The groundwater monitoring network consists of the following wells: MW-F, MW-I, MW-J, and background well MW-E Rep. All groundwater monitoring wells at the site are representative of the surficial aquifer. Groundwater elevations are collected from the site monitoring wells during the semi-annual groundwater sampling events. Groundwater contours from the Fall 2016 semi-annual sampling event were used to construct potentiometric contours presented on Figure 2. Groundwater flow within the surficial aquifer appears to be directly influenced by the paleo-channel running through the site and the ditches to the west and north of the site. In situ horizontal hydraulic conductivity (slug) tests performed on monitoring wells at the site during previous site investigations estimate the average horizontal hydraulic conductivity to be approximately 2 feet/day across the entire site. Site History There are three separate landfill units, as shown on Figure 1, at the Ann Street Landfill: a closed unlined Landfill, a C&D Landfill, and the Subtitle D Landfill. The active C&D Landfill is located west of the Subtitle D Landfill and is located over portions of the closed unlined Landfill. The Unlined Landfill is located northwest of the Subtitle D Landfill and was closed in 1997. The Subtitle D Landfill began receiving waste in 1998 and has approximately 15 years of operational life left as currently permitted. Groundwater samples for Appendix I volatile and inorganic compounds were first collected in November 1997 and have been collected semi-annually since. Alternate Source Demonstration During the most recent semi-annual sampling event conducted in August 2016, samples were collected from all of the site wells and analyzed for the North Carolina Solid Waste Section Appendix I volatile organic compounds (VOCs) and metals. The analytical results were reported to the laboratory specific method detection limit (MDL) and were quantifiable at or below Solid Waste Section Limits (SWSLs). Detections of analytes above the laboratory MDL, but below the SWSL were qualified as estimated or “J” flags. During the most recent event, no VOCs were detected in any of the samples. Several metals were detected in each well, however, arsenic, beryllium, chromium, cobalt, lead, and vanadium were detected in downgradient wells at concentrations above their respective NC2L standards. Several metals have been detected in both upgradient and downgradient monitoring wells at levels above their Mr. Ervin Lane November 8, 2016 Page 3 respective NC2L standards since initial sampling in 1997. A summary of the analytical results for this and previous sampling events are provided in Appendix A. Historically, there have been very few reported detections of VOCs in any of the wells associated with the Subtitle D Landfill and when detected VOC concentrations tend to be non-repeatable and very low. Metals have routinely been detected in all of the site wells. CDM Smith reviewed the site data for metals and identified the metals in Table 1 that have exceeded NC2L Standards and groundwater protection standards at each downgradient monitoring well at the Subtitle D Landfill. For the purpose of this ASD, the metals listed in Table 1 are the constituents of concern (COCs) for the Subtitle D Landfill. Based on the following discussions, CDM Smith believes that the routine detections of these and other metals in the site monitoring wells are related to naturally occurring background conditions at the site. Concentrations are further impaired by suspended particles in the samples and are not related to a release from the landfill. Due to the variable amounts of clays at the site, turbidity in some wells is an issue. As wells are purged, accumulated suspended solids are removed from the wells, and over time concentrations have decreased. Data from the background and downgradient compliance wells for each COC were compared using an ANOVA comparison to determine if there was a statistically significant variation between wells. In instances where results were below detection limits, a value equal to the MDL was substituted. The ANOVA comparisons for each COC are provided in Appendix B. Based on a review of the ANOVA comparisons, beryllium, lead, and thallium were not found to be statistically significant when comparing background and downgradient concentrations. In order to evaluate the remaining COCs, a T-Test was used to compare the background concentration of a particular COC to the concentration in the downgradient compliance well. As with the ANOVA comparison the MDL was substituted in instances where results were below detection limits. T-Test comparisons are provided in Appendix B. The T-Test comparison showed that all reported detections of COCs were not found to be statistically significant with the exception of the following: Arsenic: MW-F, MW-J Cobalt: MW-I, MW-J Further data evaluation was conducted to evaluate arsenic and cobalt in the above mentioned wells. As shown on Table 2, CDM Smith evaluated maximum and average reported concentrations for each statistically significant COC. In each instance, both maximum and average reported concentrations for the COC in a given downgradient well were equal to or less than the maximum and average concentration in the background well. Cumberland County Landfill Permit # 2601-MSWLF-1997 Tables Table 1 Contaminants of Concern Alternate Source Demonstration Cumberland County Subtitle D Landfill Cumberland County, North Carolina Well Arsenic Beryllium Chromium Cobalt Lead Thallium Vanadium MW-F X X X X X MW-I X X X X MW-J X X X X X X Notes: X - indicates metal was detected above NC2L Standard Page 1 of 1 Table 2 Data Evaluation Alternate Source Demonstration Cumberland County Subtitle D Landfill Cumberland County, North Carolina Downgradient Well Statistically Significant COC Maximium Detected Concentration in Well Average Detected Concentration in Well Maximium Detected Concentration in Background Well Average Detected Concentration in Background Well Total (unfiltered sample) Dissolved (filtered sample) Background Well Dissolved MW-F Arsenic 0.012 0.0079 0.0245 0.0157 ND ND ND MW-J Arsenic 0.025 0.009 0.0245 0.0157 0.025 ND ND MW-I Cobalt 0.0081 0.0034 0.0426 0.0152 0.001 ND ND MW-J Cobalt 0.0285 0.009 0.0426 0.0152 0.029 0.009 ND Notes: 1. All units shown in mg/L (ppm) 2. ND - sample was non-detect. - concentration exceeds NC2L Standard August 2016 Sampling Event Page 1 of 1 Cumberland County Landfill Permit # 2601-MSWLF-1997 Figures Cumberland County Landfill Permit # 2601-MSWLF-1997 Appendix A Analytical Data - Metals Detected Groundwater Constituents - Metals Alternative Source Demonstration Cumberland County Subtitle D Landfill Monitoring Well Code Sample Date An t i m o n y Ar s e n i c Ba r i u m Be r y l l i u m Ca d m i u m Ch r o m i u m Co b a l t Co p p e r Le a d Ni c k e l Se l e n i u m Sil v e r Th a l l i u m Va n a d i u m Zin c 0.001* 0.01 0.7 0.004* 0.002 0.01 0.001* 1 0.015 0.1 0.02 0.02 0.0002* 0.0003* 1 Solid Waste Section Limit 0.006 0.01 0.1 0.001 0.001 0.01 0.01 0.01 0.01 0.05 0.01 0.01 0.0055 0.025 0.01 MW-E 21-Nov-97 0.016 MW-E 25-Mar-98 0.012 0.021 MW-E dup 25-Mar-98 0.017 0.026 MW-E 16-Apr-98 0.014 0.023 0.12 MW-E 9-Jun-98 0.016 0.0039 0.026 MW-E 10-Dec-98 0.57 0.0041 0.011 MW-E 8-Apr-99 0.0176 0.0026 0.0275 MW-E 20-Oct-99 0.0104 0.503 0.0132 MW-E 21-Mar-00 0.0214 0.0048 0.0426 MW-E 19-Sep-00 0.0156 0.0015 0.0174 MW-E 24-Apr-01 0.0207 0.0018 0.0343 MW-E 1-Nov-01 0.0121 0.0018 0.0161 MW-E 13-Mar-02 0.0118 0.0012 0.0373 MW-E 5-Dec-02 0.0172 0.0022 0.0182 MW-E 3-Apr-03 0.0245 0.0022 0.0347 MW-E 28-Oct-03 0.0159 0.578 0.0200 MW-E 8-Mar-04 0.0134 0.0321 MW-E Rep 11-Nov-04 0.0129 MW-E Rep 20-Apr-05 MW-E Rep 20-Sep-05 0.0011 MW-E Rep 19-Apr-06 MW-E Rep 10-Oct-06 MW-E Rep 13-Mar-07 0.0352J 0.00251J 0.0009J 0.00313J 0.00326J 0.00069J 0.00289J 0.00421J MW-E Rep 14-Nov-07 0.0129 0.0921J 0.00122 0.00063J 0.0293 0.00791J 0.0241 0.0176 0.0106J 0.0656 0.03 MW-E Rep 24-Apr-08 0.0525J 0.00118 0.00029J 0.00382J 0.00753J 0.00991J 0.00298J 0.00535J 0.00665J MW-E Rep 28-Oct-08 0.0380JB 0.00305B 0.00374JB 0.00389JB 0.00403J 0.00426JB MW-E Rep 30-Mar-09 0.0332J 0.00309J 0.00407J 0.00538J 0.0139JB 0.00917J MW-E Rep 28-Sep-09 0.0515J 0.00759J 0.00508J 0.00572JB 0.00614J 0.00478J 0.00631JB MW-E Rep 18-May-10 0.0266J 0.00447J MW-E Rep 30-Sep-10 0.0596J 0.000682J 0.0044J 0.0023J 0.00321J 0.0573 MW-E Rep 29-Mar-11 0.103 0.000759J 0.00231J 0.00263J 0.00234J 0.00254J 0.000929J 0.00749J 0.0117 MW-E Rep 28-Sep-11 0.131 0.000278J 0.00129J 0.00188J 0.00302J 0.0070J MW-E Rep 7-Mar-12 0.000232J 0.126 0.000124J 0.00185J MW-E Rep 27-Sep-12 0.0731J 0.000130J 0.00117J 0.00191J 0.00489J MW-E Rep 6-Jun-13 0.0828J 0.000328J 0.00214J 0.00251JB 0.00366J 0.00987J MW-E Rep 13-Nov-13 0.0849J 0.000778J 0.00331J 0.00231J 0.00257J 0.0105J 0.00896J MW-E Rep 23-Apr-14 0.139 0.00268 0.00894J 0.00376J 0.00857J 0.00695J 0.00493J 0.0317 0.0239 MW-E Rep 6-Nov-14 0.0789J 0.00102 0.00405J 0.00208J 0.00314J 0.0113J 0.0147 MW-E Rep 27-May-15 0.0671J 0.000371J 0.011J 0.004J MW-E Rep 10-Nov-15 0.0564J 0.000373J 0.00297J MW-E Rep 15-Mar-16 0.0570J 0.00189J MW-E Rep 25-Aug-16 0.0571J 0.000361J 0.00150J 0.00240J 0.00507J MW-E Rep (dissolved) 25-Aug-16 0.0451J 0.00794J North Carolina 2L or Groundwater Protection Standard Page 1 of 4 November 2016 Detected Groundwater Constituents - Metals Alternative Source Demonstration Cumberland County Subtitle D Landfill Monitoring Well Code Sample Date An t i m o n y Ar s e n i c Ba r i u m Be r y l l i u m Ca d m i u m Ch r o m i u m Co b a l t Co p p e r Le a d Ni c k e l Se l e n i u m Sil v e r Th a l l i u m Va n a d i u m Zin c 0.001* 0.01 0.7 0.004* 0.002 0.01 0.001* 1 0.015 0.1 0.02 0.02 0.0002* 0.0003* 1 Solid Waste Section Limit 0.006 0.01 0.1 0.001 0.001 0.01 0.01 0.01 0.01 0.05 0.01 0.01 0.0055 0.025 0.01 North Carolina 2L or Groundwater Protection Standard MW-F 8-Apr-99 MW-F 20-Oct-99 MW-F dup 20-Oct-99 MW-F 21-Mar-00 MW-F 19-Sep-00 MW-F 24-Apr-01 MW-F 1-Nov-01 MW-F 13-Mar-02 MW-F 31-Oct-02 MW-F 3-Apr-03 0.0121 MW-F 28-Oct-03 0.0300 MW-F 9-Mar-04 MW-F 11-Nov-04 0.0195 MW-F 20-Apr-05 0.0116 MW-F 20-Sep-05 0.0195 MW-F 19-Apr-06 MW-F 10-Oct-06 0.0111 MW-F 13-Mar-07 0.123 0.00302J 0.00156J 0.0172 0.00134J 0.00485J MW-F 14-Nov-07 0.00519J 0.124 0.00158 0.00026J 0.00234J 0.0184 0.00311J 0.00603J 0.00533J MW-F 24-Apr-08 0.142 0.0114 0.00016J 0.00368J 0.0144 0.00602J 0.0115 0.00765J 0.00363J 0.0045J 0.00825J MW-F 28-Oct-08 0.114B 0.00397JB 0.00619J 0.00299JB 0.00451JB 0.00447J MW-F 30-Mar-09 0.116 0.00662 0.0107 0.00174J 0.00470J 0.00646 0.00254JB 0.00631J MW-F 28-Sep-09 0.148 0.00479J 0.0183 0.00512JB 0.00343J 0.0038J 0.00099J 0.00863JB MW-F 17-May-10 0.0983J 0.0116 0.00126J 0.00562J MW-F (dup) 17-May-10 0.103 0.012 0.00208J 0.0015J 0.00521J MW-F 30-Sep-10 0.115 0.0001J 0.013 0.00239J 0.00118J 0.00491J MW-F 28-Mar-11 0.00631J 0.127 0.00221J 0.0157 0.00263J 0.00776J MW-F (dup) 28-Mar-11 0.129 0.00204J 0.0157 0.00239J 0.00958J MW-F 27-Sep-11 0.128 0.00226J 0.0174 0.00281J 0.000948J 0.00638J MW-F 6-Mar-12 0.124 0.00265J 0.0159 0.00351J 0.0025J MW-F (dup) 6-Mar-12 0.127 0.0026J 0.0161 0.00384J 0.00308J 0.00424J MW-F 26-Sep-12 0.157 0.000160J 0.00229J 0.017 0.00317J 0.00335J 0.00169J 0.0182J MW-F 5-Jun-13 0.117 0.0161 0.0021J 0.00331J 0.00465JB 0.00866J MW-F 12-Nov-13 0.128 0.00173J 0.0185 0.00242J 0.00660J MW-F (dup) 12-Nov-13 0.125 0.00155J 0.0181 0.00255J 0.00739J MW-F 22-Apr-14 0.150 0.000593J 0.00461J 0.0243 0.0206 0.0128 0.00532J 0.00478J 0.0566 MW-F 5-Nov-14 0.160 0.00382J 0.0299 0.00447J 0.0122 MW-F (dup) 5-Nov-14 0.151 0.00011J 0.00248J 0.0285 0.00363J 0.0105 MW-F 27-May-15 0.119 0.000128J 0.0193 0.00366J 0.00874J MW-F 10-Nov-15 0.128 0.000208J 0.0184 0.00443J 0.00238J 0.00504J MW-F 15-Mar-16 0.000234J 0.0726J 0.0186 0.00210J 0.00320J 0.0136 MW-F 25-Aug-16 0.0845J 0.0227 0.00187J 0.00356J 0.000111J 0.0110 MW-F (dup) 25-Aug-16 0.0874J 0.000206J 0.0244 0.00634J 0.00365J 0.000128J 0.00255J 0.0185 MW-F (dissolved) 25-Aug-16 0.000438J 0.0806J 0.0196 0.00347J 0.000121J 0.00852J MW-F (dup) (dissolved) 25-Aug-16 0.0777J 0.0190 0.00231J 0.000119J 0.0675 Page 2 of 4 November 2016 Detected Groundwater Constituents - Metals Alternative Source Demonstration Cumberland County Subtitle D Landfill Monitoring Well Code Sample Date An t i m o n y Ar s e n i c Ba r i u m Be r y l l i u m Ca d m i u m Ch r o m i u m Co b a l t Co p p e r Le a d Ni c k e l Se l e n i u m Sil v e r Th a l l i u m Va n a d i u m Zin c 0.001* 0.01 0.7 0.004* 0.002 0.01 0.001* 1 0.015 0.1 0.02 0.02 0.0002* 0.0003* 1 Solid Waste Section Limit 0.006 0.01 0.1 0.001 0.001 0.01 0.01 0.01 0.01 0.05 0.01 0.01 0.0055 0.025 0.01 North Carolina 2L or Groundwater Protection Standard MW-I 13-Mar-02 MW-I 31-Oct-02 MW-I 3-Apr-03 MW-I (dup) 3-Apr-03 MW-I 28-Oct-03 MW-I (dup) 28-Oct-03 MW-I 8-Mar-04 MW-I (dup) 8-Mar-04 MW-I 10-Nov-04 MW-I 20-Apr-05 MW-I (dup) 20-Apr-05 MW-I 20-Sep-05 MW-I 19-Apr-06 MW-I (dup) 19-Apr-06 MW-I 10-Oct-06 MW-I 13-Mar-07 0.0819J 0.00211J 0.0005J 0.00226J 0.00480J 0.00313J MW-I 14-Nov-07 0.00638J 0.142 0.00024J 0.00634J 0.00425J 0.00524J 0.00997J 0.00465J MW-I (dup) 14-Nov-07 0.00742J 0.140 0.00392 0.00029J 0.00525J 0.00499J 0.0038J 0.00809J 0.00526J MW-I 24-Apr-08 0.132 0.00649 0.00523J 0.00686J 0.00784J 0.00298J 0.00573J 0.00647J MW-I 28-Oct-08 0.119B 0.00675B 0.0142B 0.012B 0.0068J 0.00423JB 0.0208J 0.0148 MW-I (dup) 28-Oct-08 0.00243J 0.123B 0.00173B 0.015B 0.0125B 0.00686J 0.00391JB 0.00635 0.0213J 0.0171 MW-I 30-Mar-09 0.0924J 0.00377J 0.00392J 0.0189JB 0.00444J MW-I 28-Sep-09 0.114 0.00053J 0.0103 0.00413J 0.00786JB 0.0108 0.00481J 0.0160J 0.00785JB MW-I (dup) 28-Sep-09 0.0944J 0.00702J 0.00941JB 0.00272J 0.0178J 0.00873JB MW-I 17-May-10 0.0939J 0.000212J 0.00615J 0.0025J 0.0144J 0.00616J MW-I 30-Sep-10 0.086J 0.000327J 0.00482J 0.0106J 0.00415J MW-I (dup) 30-Sep-10 0.0933J 0.000231J 0.00571J 0.00307J 0.0122J 0.0062J MW-I 28-Mar-11 0.116 0.000103J 0.00155J 0.00330J 0.00450J MW-I 27-Sep-11 0.176 0.00577J 0.00301J 0.00613J MW-I 6-Mar-12 0.000307J 0.198 0.00177J 0.00148J 0.00245J 0.00312J 0.00267J MW-I 26-Sep-12 0.00324J 0.194 0.00273J 0.00152J 0.00196J 0.011J MW-I (dup) 26-Sep-12 0.192 0.00258J 0.00166J 0.00193J 0.109J MW-I 5-Jun-13 0.193 0.00217J 0.00286JB 0.00622J 0.00447J MW-I 12-Nov-13 0.145 0.000486J 0.0186 0.00267J 0.00819J 0.00222J 0.00284J 0.0403 0.0107 MW-I 22-Apr-14 0.121 0.000578J 0.0206 0.00271J 0.00951J 0.00335J 0.00407J 0.0423 0.0106 MW-I 5-Nov-14 0.106 0.000365J 0.00991J 0.00418J 0.00507J 0.0223J 0.0106 MW-I 27-May-15 0.100 0.000210J 0.00171J 0.00136J 0.00485J 0.0116J 0.00589J MW-I (dup) 27-May-15 0.0976J 0.000205J 0.00140J 0.00170J 0.00457J 0.0114J 0.00744J MW-I 10-Nov-15 0.0968J 0.000330J 0.00663J 0.00388J 0.00302J 0.00393J 0.0203J 0.00495J MW-I 15-Mar-16 0.0922J 0.000209J 0.00700J 0.00807J 0.00564J 0.0204J 0.0174 MW-I (dup) 15-Mar-16 0.0901J 0.000167J 0.00623J 0.00601J 0.00510J 0.0186J 0.00765J MW-I 25-Aug-16 0.0939J 0.00267J 0.00135J 0.00370J 0.00934J 0.00578J MW-I (dissolved) 25-Aug-16 0.0805J 0.00235J 0.00866J Page 3 of 4 November 2016 Detected Groundwater Constituents - Metals Alternative Source Demonstration Cumberland County Subtitle D Landfill Monitoring Well Code Sample Date An t i m o n y Ar s e n i c Ba r i u m Be r y l l i u m Ca d m i u m Ch r o m i u m Co b a l t Co p p e r Le a d Ni c k e l Se l e n i u m Sil v e r Th a l l i u m Va n a d i u m Zin c 0.001* 0.01 0.7 0.004* 0.002 0.01 0.001* 1 0.015 0.1 0.02 0.02 0.0002* 0.0003* 1 Solid Waste Section Limit 0.006 0.01 0.1 0.001 0.001 0.01 0.01 0.01 0.01 0.05 0.01 0.01 0.0055 0.025 0.01 North Carolina 2L or Groundwater Protection Standard MW-J 13-Mar-02 MW-J (dup) 13-Mar-02 MW-J 31-Oct-02 MW-J (dup) 31-Oct-02 MW-J 3-Apr-03 MW-J 28-Oct-03 MW-J 8-Mar-04 MW-J 10-Nov-04 MW-J 20-Apr-05 MW-J 20-Sep-05 0.0016 MW-J (dup) 20-Sep-05 MW-J 19-Apr-06 MW-J 10-Oct-06 MW-J (dup) 10-Oct-06 MW-J 13-Mar-07 0.118 0.00291J 0.00226J 0.00964J 0.00608J MW-J (dup) 13-Mar-07 0.123 0.00114J 0.00055J 0.00098J 0.00421J 0.00791J MW-J 14-Nov-07 0.130 0.00564 0.00029J 0.00196J 0.00435J MW-J 24-Apr-08 0.143 0.00406 0.00022J 0.00284J 0.00332J 0.00549J 0.0116 0.00297J 0.00736J MW-J (dup) 24-Apr-08 0.144 0.00362 0.00022J 0.00326J 0.00405J 0.00599J 0.00673J 0.00283J 0.00818J MW-J 28-Oct-08 0.135B 0.00338JB 0.00339JB 0.00620J 0.00429JB 0.00727J MW-J 30-Mar-09 0.00242J 0.133 0.00334 0.00383J 0.00733JB 0.00732J MW-J (dup) 30-Mar-09 0.138 0.0017 0.00373J 0.00231JB 0.00619J MW-J 28-Sep-09 0.159 0.00449J 0.00753J 0.00493JB 0.00459J 0.00483J 0.00111J 0.0009J 0.0118B MW-J 17-May-10 0.163 0.00585J 0.00114J 0.0103 MW-J 30-Sep-10 0.156 0.000123J 0.00605J 0.00655J MW-J 28-Mar-11 0.00427J 0.170 0.00782J 0.00724J MW-J 27-Sep-11 0.00316J 0.184 0.00808J 0.00211J 0.00252J 0.00708J MW-J (dup) 27-Sep-11 0.00338J 0.183 0.00877J 0.00249J 0.00745J MW-J 6-Mar-12 0.000756J 0.185 0.00866J 0.00313J 0.00654J MW-J 26-Sep-12 0.00581J 0.203 0.00121 0.0154 0.00972J 0.00713J 0.00606J 0.00928J 0.045 0.0381 MW-J 5-Jun-13 0.00869J 0.266 0.00136 0.0215 0.0127 0.0101 0.00589J 0.0108J 0.0466 0.0394 MW-J (dup) 5-Jun-13 0.00873J 0.263 0.00133 0.0193 0.0128 0.00955J 0.00558J 0.0106J 0.0455 0.0372 MW-J 12-Nov-13 0.0143 0.312 0.00290 0.0373 0.0193 0.0229 0.0142 0.0155J 0.00290J 0.0893 0.0690 MW-J 22-Apr-14 0.00873J 0.245 0.00121 0.0154 0.0118 0.00861J 0.00617J 0.00851J 0.0365 0.0278 MW-J (dup) 22-Apr-14 0.267 0.00167 0.0220 0.0147 0.0118 0.00845J 0.0108J 0.0514 0.0372 MW-J 5-Nov-14 0.198 0.000261J 0.00349J 0.00777J 0.00279J 0.00737J 0.0141 MW-J 27-May-15 0.213 0.000541J 0.00478J 0.00553J 0.00312J 0.00430J 0.0118J 0.0151 MW-J 10-Nov-15 0.215 0.00159 0.0171 0.0114 0.00829J 0.00787J 0.00859J 0.0447 0.0333 MW-J (dup) 10-Nov-15 0.214 0.00145 0.0171 0.0109 0.00766J 0.00873J 0.00939J 0.0431 0.0327 MW-J 15-Mar-16 0.210 0.000756J 0.0114 0.0106 0.00574J 0.00639J 0.0253 0.0302 MW-J 26-Aug-16 0.0249 0.409 0.00427 0.0390 0.0285 0.0338 0.0155 0.0249J 0.119 0.0803 MW-J (dissolved) 26-Aug-16 0.177 0.00910J 0.00224J 0.0102 Notes: 1. All units for metals are in milligrams per liter (parts per million). All units for volatile organic compounds are in micrograms per liter (parts per billion). 2. * - Groundwater Protection Standard 3. Background well MW-E was replaced with MW-E Rep on November 11, 2004. 4. J - Indicates the analytical result is an estimated concentration between the method detection limit and the Solid Waste Section Reporting Limit. 5. B - The analyte was also detected in the associated method blank. - Concentration exceeds the 15A NCAC 02L.0202 (North Carolina 2L) or Groundwater Protection Standard. - Indicates the result is below the laboratory method detection limit. Page 4 of 4 November 2016 Cumberland County Landfill Permit # 2601-MSWLF-1997 Appendix B Statistical Evaluation Cumberland County Landfill Permit # 2601-MSWLF-1997 Analysis of Variance MW - E MW - F MW - I MW - J An o v a : S i n g l e F a c t o r 0. 0 0 1 0. 0 0 1 0. 0 0 1 0. 0 0 1 0. 0 1 2 0. 0 0 1 0. 0 0 1 0. 0 0 1 SU M M A R Y 0. 0 1 4 0. 0 0 1 0. 0 0 1 0. 0 0 1 Gr o u p s Co u n t Su m Av e r a g e Va r i a n c e 0. 0 1 6 0. 0 0 1 0. 0 0 1 0. 0 0 1 MW - E 41 0. 2 6 1 5 0. 0 0 6 3 7 8 0 4 9 5. 7 0 5 9 8 E - 0 5 0. 0 0 1 0. 0 0 1 0. 0 0 1 0. 0 0 1 MW - F 36 0. 0 5 6 6 0. 0 0 1 5 7 2 2 2 2 4. 4 9 0 7 E - 0 6 0. 0 1 7 6 0. 0 0 1 0. 0 0 1 0. 0 0 1 MW - I 30 0. 0 3 7 6 2 0. 0 0 1 2 5 4 1. 1 0 4 3 6 E - 0 6 0. 0 1 0 4 0. 0 0 1 0. 0 0 1 0. 0 0 1 MW - J 30 0. 0 9 4 2 8 0. 0 0 3 1 4 2 6 6 7 2. 6 5 4 3 8 E - 0 5 0. 0 2 1 4 0. 0 0 1 0. 0 0 1 0. 0 0 1 0. 0 1 5 6 0. 0 1 2 1 0. 0 0 1 0. 0 0 1 0. 0 2 0 7 0. 0 0 1 0. 0 0 1 0. 0 0 1 AN O V A 0. 0 1 2 1 0. 0 0 1 0. 0 0 1 0. 0 0 1 So u r c e o f V a r i a t i o n SS df MS F P- v a l u e F crit 0. 0 1 1 8 0. 0 0 1 0. 0 0 6 3 8 0. 0 0 1 Be t w e e n G r o u p s 0. 0 0 0 6 2 2 2 1 1 3 0. 0 0 0 2 0 7 4 0 4 8. 5 1 0 2 2 4 7 7 7 3. 2 6 7 8 7 E - 0 5 3.2158533 0. 0 1 7 2 0. 0 0 1 0. 0 0 1 0. 0 0 1 Wi t h i n G r o u p s 0. 0 0 3 2 4 1 3 6 1 13 3 2. 4 3 7 1 1 E - 0 5 0. 0 2 4 5 0. 0 0 1 0. 0 0 1 0. 0 0 1 0. 0 1 5 9 0. 0 0 1 0. 0 0 1 0. 0 0 2 4 2 To t a l 0. 0 0 3 8 6 3 5 7 2 13 6 0. 0 1 3 4 0. 0 0 1 0. 0 0 1 0. 0 0 1 SI G N I F I C A N T 0. 0 0 1 0. 0 0 1 0. 0 0 1 0. 0 0 1 0. 0 0 1 0. 0 0 5 1 9 0. 0 0 1 0. 0 0 1 0. 0 0 1 0. 0 0 1 0. 0 0 1 0. 0 0 4 2 7 0. 0 0 1 0. 0 0 1 0. 0 0 1 0. 0 0 3 1 6 0. 0 0 1 0. 0 0 1 0. 0 0 1 0. 0 0 1 0. 0 0 1 0. 0 0 1 0. 0 0 3 2 4 0. 0 0 5 8 1 0. 0 1 2 9 0. 0 0 1 0. 0 0 1 0. 0 0 8 6 9 0. 0 0 1 0. 0 0 1 0. 0 0 1 0. 0 1 4 3 0. 0 0 1 0. 0 0 6 3 1 0. 0 0 1 0. 0 0 8 7 3 0. 0 0 1 0. 0 0 1 0. 0 0 1 0. 0 0 1 0. 0 0 1 0. 0 0 1 0. 0 0 1 0. 0 0 1 0. 0 0 1 0. 0 0 1 0. 0 0 1 0. 0 0 1 0. 0 0 1 0. 0 0 1 0. 0 0 1 0. 0 0 1 0. 0 0 1 0. 0 0 1 0. 0 0 1 0. 0 2 4 9 0. 0 0 1 0. 0 0 1 0. 0 0 1 0. 0 0 1 0. 0 0 1 0. 0 0 1 0. 0 0 1 0. 0 0 1 0. 0 0 1 0. 0 0 1 0. 0 0 1 0. 0 0 1 0. 0 0 1 0. 0 0 1 0. 0 0 1 0. 0 0 1 0. 0 0 1 Co n c e n t r a t i o n e x c e e d s N C 2 L S t a n d a r d Ar s e n i c MW - E MW - F MW - I MW - J An o v a : S i n g l e F a c t o r 0. 0 0 0 1 0. 0 0 0 1 0. 0 0 0 1 0. 0 0 0 1 0. 0 0 0 1 0. 0 0 0 1 0. 0 0 0 1 0. 0 0 0 1 SU M M A R Y 0. 0 0 0 1 0. 0 0 0 1 0. 0 0 0 1 0. 0 0 0 1 Gr o u p s Co u n t Su m Av e r a g e Va r i a n c e 0. 0 0 0 1 0. 0 0 0 1 0. 0 0 0 1 0. 0 0 0 1 MW - E 41 0. 0 1 8 3 4 4 0. 0 0 0 4 4 7 4 1 5 5. 2 5 4 8 9 E - 0 7 0. 0 0 0 1 0. 0 0 0 1 0. 0 0 0 1 0. 0 0 0 1 MW - F 36 0. 1 7 1 4 8 9 0. 0 0 4 7 6 3 5 8 3 0. 0 0 0 6 0 7 5 4 6 0. 0 0 0 1 0. 0 0 0 1 0. 0 0 0 1 0. 0 0 0 1 MW - I 30 0. 0 2 0 4 0. 0 0 0 6 8 2. 7 5 0 9 1 E - 0 6 0. 0 0 0 1 0. 0 0 0 1 0. 0 0 0 1 0. 0 0 0 1 MW - J 30 0. 0 3 1 7 7 1 0. 0 0 1 0 5 9 0 3 3 2. 3 9 0 5 7 E - 0 6 0. 0 0 0 1 0. 0 0 0 1 0. 0 0 0 1 0. 0 0 0 1 0. 0 0 0 1 0. 0 0 0 1 0. 0 0 0 1 0. 0 0 0 1 0. 0 0 0 1 0. 0 0 0 1 0. 0 0 0 1 0. 0 0 0 1 AN O V A 0. 0 0 0 1 0. 0 0 0 1 0. 0 0 2 1 1 0. 0 0 2 9 1 So u r c e o f V a r i a t i o n SS df MS F P- v a l u e F crit 0. 0 0 0 1 0. 0 0 0 1 0. 0 0 0 1 0. 0 0 5 6 4 Be t w e e n G r o u p s 0. 0 0 0 4 4 5 1 3 9 3 0. 0 0 0 1 4 8 3 8 0. 9 2 0 7 0 1 5 1 4 0. 4 3 2 7 9 4 6 1 4 3.2158533 0. 0 0 0 1 0. 0 0 0 1 0. 0 0 6 4 9 0. 0 0 4 0 6 Wi t h i n G r o u p s 0. 0 2 1 4 3 4 2 1 8 13 3 0. 0 0 0 1 6 1 1 6 0. 0 0 0 1 0. 0 0 0 1 0. 0 0 6 7 5 0. 0 0 0 1 0. 0 0 0 1 0. 0 0 0 1 0. 0 0 0 1 0. 0 0 3 3 4 To t a l 0. 0 2 1 8 7 9 3 5 7 13 6 0. 0 0 0 1 0. 0 0 0 1 0. 0 0 0 5 3 0. 0 0 0 1 NO T S I G N I F I C A N T 0. 0 0 0 1 0. 0 0 0 1 0. 0 0 0 2 1 2 0. 0 0 0 1 0. 0 0 0 1 0. 0 0 1 5 8 0. 0 0 0 3 2 7 0. 0 0 0 1 2 3 0. 0 0 0 1 0. 0 1 1 4 0. 0 0 0 1 0 3 0. 0 0 0 1 0. 0 0 0 1 0. 0 0 0 1 0. 0 0 0 1 0. 0 0 0 1 0. 0 0 0 1 0. 0 0 6 6 2 0. 0 0 0 1 0. 0 0 0 1 0. 0 0 2 5 1 0. 1 4 8 0. 0 0 0 1 0. 0 0 1 2 1 0. 0 0 1 2 2 0. 0 0 0 1 0. 0 0 0 1 0. 0 0 1 3 6 0. 0 0 1 1 8 0. 0 0 0 1 0. 0 0 0 4 8 6 0. 0 0 2 9 0. 0 0 3 0 5 0. 0 0 0 1 0. 0 0 0 5 7 8 0. 0 0 1 2 1 0. 0 0 0 1 0. 0 0 0 1 0. 0 0 0 3 6 5 0. 0 0 0 2 6 1 0. 0 0 0 1 0. 0 0 0 1 0. 0 0 0 2 1 0. 0 0 0 5 4 1 0. 0 0 0 1 0. 0 0 0 1 6 0. 0 0 0 3 3 0. 0 0 1 5 9 0. 0 0 0 6 8 2 0. 0 0 0 1 0. 0 0 0 2 0 9 0. 0 0 0 7 5 6 0. 0 0 0 7 5 9 0. 0 0 0 1 0. 0 0 0 1 0. 0 0 4 2 7 0. 0 0 0 2 7 8 0. 0 0 0 5 9 3 0. 0 0 0 1 2 4 0. 0 0 0 1 0. 0 0 0 1 3 0. 0 0 0 1 2 8 0. 0 0 0 3 2 8 0. 0 0 0 2 0 8 0. 0 0 0 7 7 8 0. 0 0 0 1 0. 0 0 2 6 8 0. 0 0 0 1 0. 0 0 1 0 2 0. 0 0 0 3 7 1 0. 0 0 0 3 7 3 0. 0 0 0 1 0. 0 0 0 3 6 1 Co n c e n t r a t i o n e x c e e d s N C 2 L S t a n d a r d Be r y l l i u m MW - E MW - F MW - I MW - J An o v a : S i n g l e F a c t o r 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 1 4 SU M M A R Y 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 1 4 Gr o u p s Co u n t Su m Av e r a g e Va r i a n c e 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 1 4 MW - E 41 0. 1 1 0 4 4 0. 0 0 2 6 9 3 6 5 9 2. 0 7 7 3 E - 0 5 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 1 4 MW - F 36 0. 0 6 9 3 5 0. 0 0 1 9 2 6 3 8 9 9. 7 7 8 1 8 E - 0 7 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 1 4 MW - I 30 0. 1 4 2 0 5 0. 0 0 4 7 3 5 2. 7 2 0 6 4 E - 0 5 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 1 4 MW - J 30 0. 1 9 7 9 0. 0 0 6 5 9 6 6 6 7 0. 0 0 0 1 0 5 3 3 9 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 1 4 AN O V A 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 0 5 0. 0 0 1 4 So u r c e o f V a r i a t i o n SS df MS F P- v a l u e F crit 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 6 3 4 0. 0 0 1 4 Be t w e e n G r o u p s 0. 0 0 0 4 3 7 4 2 3 0. 0 0 0 1 4 5 8 0 7 4. 1 1 8 1 8 0 8 7 6 0. 0 0 7 8 8 6 1 1 6 3.2158533 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 5 2 3 0. 0 0 2 8 4 Wi t h i n G r o u p s 0. 0 0 4 7 0 8 9 4 9 13 3 3. 5 4 0 5 6 E - 0 5 0. 0 0 1 4 0. 0 0 1 4 0. 0 1 4 2 0. 0 0 3 3 8 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 3 7 7 0. 0 0 1 4 To t a l 0. 0 0 5 1 4 6 3 7 13 6 0. 0 0 1 4 0. 0 0 1 4 0. 0 1 0 3 0. 0 0 4 4 9 SI G N I F I C A N T 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 6 1 5 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 2 3 4 0. 0 0 4 8 2 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 3 6 8 0. 0 0 1 5 5 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 3 9 7 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 1 7 7 0. 0 0 1 4 0. 0 0 0 9 0. 0 0 4 7 9 0. 0 0 2 7 3 0. 0 1 5 4 0. 0 2 9 3 0. 0 0 1 4 0. 0 0 2 1 7 0. 0 2 1 5 0. 0 0 3 8 2 0. 0 0 1 4 0. 0 1 8 6 0. 0 3 7 3 0. 0 0 3 7 4 0. 0 0 2 2 1 0. 0 2 0 6 0. 0 1 5 4 0. 0 0 3 0 9 0. 0 0 2 2 6 0. 0 0 9 9 1 0. 0 0 3 4 9 0. 0 0 7 5 9 0. 0 0 2 6 5 0. 0 0 1 7 1 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 2 2 9 0. 0 0 6 6 3 0. 0 1 7 1 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 7 0. 0 1 1 4 0. 0 0 2 3 1 0. 0 0 1 7 3 0. 0 0 2 6 7 0. 0 3 9 0. 0 0 1 2 9 0. 0 0 4 6 1 0. 0 0 1 4 0. 0 0 3 8 2 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 3 3 1 0. 0 0 1 4 0. 0 0 8 9 4 0. 0 0 1 4 0. 0 0 4 0 5 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 1 5 Co n c e n t r a t i o n e x c e e d s N C 2 L S t a n d a r d Ch r o m i u m MW - E MW - F MW - I MW - J An o v a : S i n g l e F a c t o r 0. 0 1 6 0. 0 0 1 1 0. 0 0 1 1 0. 0 0 1 1 0. 0 2 1 0. 0 0 1 1 0. 0 0 1 1 0. 0 0 1 1 SU M M A R Y 0. 0 2 3 0. 0 0 1 1 0. 0 0 1 1 0. 0 0 1 1 Gr o u p s Co u n t Su m Av e r a g e Va r i a n c e 0. 0 2 6 0. 0 0 1 1 0. 0 0 1 1 0. 0 0 1 1 MW - E 41 0. 4 5 4 8 4 0. 0 1 1 0 9 3 6 5 9 0. 0 0 0 1 5 4 0. 0 1 1 0. 0 0 1 1 0. 0 0 1 1 0. 0 0 1 1 MW - F 36 0. 4 3 3 2 1 0. 0 1 2 0 3 3 6 1 1 8. 0 4 0 3 3 E - 0 5 0. 0 2 7 5 0. 0 0 1 1 0. 0 0 1 1 0. 0 0 1 1 MW - I 30 0. 0 5 8 0 2 0. 0 0 1 9 3 4 2. 8 0 7 8 2 E - 0 6 0. 0 1 3 2 0. 0 0 1 1 0. 0 0 1 1 0. 0 0 1 1 MW - J 30 0. 1 8 3 1 7 0. 0 0 6 1 0 5 6 6 7 4. 0 0 4 1 2 E - 0 5 0. 0 4 2 6 0. 0 0 1 1 0. 0 0 1 1 0. 0 0 1 1 0. 0 1 7 4 0. 0 0 1 1 0. 0 0 1 1 0. 0 0 1 1 0. 0 3 4 3 0. 0 3 0. 0 0 1 1 0. 0 0 1 1 AN O V A 0. 0 1 6 1 0. 0 0 1 1 0. 0 0 1 1 0. 0 0 2 2 6 So u r c e o f V a r i a t i o n SS df MS F P- v a l u e F crit 0. 0 3 7 3 0. 0 1 9 5 0. 0 0 1 1 0. 0 0 1 1 Be t w e e n G r o u p s 0. 0 0 2 1 8 1 6 0 1 3 0. 0 0 0 7 2 7 2 9. 4 6 6 6 0 3 6 6 3 1. 0 3 2 6 4 E - 0 5 3.2158533 0. 0 1 8 2 0. 0 1 1 6 0. 0 0 1 1 0. 0 0 3 3 2 Wi t h i n G r o u p s 0. 0 1 0 2 1 6 7 2 1 13 3 7. 6 8 1 7 4 E - 0 5 0. 0 3 4 7 0. 0 1 9 5 0. 0 0 1 1 0. 0 0 1 1 0. 0 2 0. 0 0 1 1 0. 0 0 1 1 0. 0 0 3 8 3 To t a l 0. 0 1 2 3 9 8 3 2 2 13 6 0. 0 3 2 1 0. 0 1 1 1 0. 0 0 4 1 3 0. 0 0 7 5 3 SI G N I F I C A N T 0. 0 1 2 9 0. 0 0 3 0 2 0. 0 0 1 1 0. 0 0 5 8 5 0. 0 0 1 1 0. 0 1 8 4 0. 0 0 1 1 0. 0 0 6 0 5 0. 0 0 1 1 0. 0 1 4 4 0. 0 0 1 1 0. 0 0 7 8 2 0. 0 0 1 1 0. 0 0 6 1 9 0. 0 0 5 7 7 0. 0 0 8 0 8 0. 0 0 1 1 0. 0 1 0 7 0. 0 0 1 4 8 0. 0 0 8 6 6 0. 0 0 3 1 3 0. 0 1 8 3 0. 0 0 1 5 2 0. 0 0 9 7 2 0. 0 0 7 9 1 0. 0 1 1 6 0. 0 0 1 1 0. 0 1 2 7 0. 0 0 1 1 0. 0 1 3 0. 0 0 2 6 7 0. 0 1 9 3 0. 0 0 1 1 0. 0 1 5 7 0. 0 0 2 7 1 0. 0 1 1 8 0. 0 0 1 1 0. 0 1 7 4 0. 0 0 4 1 8 0. 0 0 7 7 7 0. 0 0 5 0 8 0. 0 1 5 9 0. 0 0 1 3 6 0. 0 0 4 7 8 0. 0 0 1 1 0. 0 1 7 0. 0 0 3 8 8 0. 0 1 1 4 0. 0 0 4 4 0. 0 1 6 1 0. 0 0 8 0 7 0. 0 1 0 6 0. 0 0 2 6 3 0. 0 1 8 5 0. 0 0 1 3 5 0. 0 2 8 5 0. 0 0 1 8 8 0. 0 2 4 3 0. 0 0 1 8 5 0. 0 2 9 9 0. 0 0 1 1 7 0. 0 1 9 3 0. 0 0 2 1 4 0. 0 1 8 4 0. 0 0 2 3 1 0. 0 1 8 6 0. 0 0 3 7 6 0. 0 2 2 7 0. 0 0 2 0 8 0. 0 0 1 1 0. 0 0 1 1 0. 0 0 1 1 0. 0 0 1 1 Co n c e n t r a t i o n e x c e e d s N C 2 L S t a n d a r d Co b a l t MW - E MW - F MW - I MW - J An o v a : S i n g l e F a c t o r 0. 0 0 3 1 0. 0 0 3 1 0. 0 0 3 1 0. 0 0 3 1 0. 0 0 3 1 0. 0 0 3 1 0. 0 0 3 1 0. 0 0 3 1 SU M M A R Y 0. 0 0 3 1 0. 0 0 3 1 0. 0 0 3 1 0. 0 0 3 1 Gr o u p s Co u n t Su m Av e r a g e Va r i a n c e 0. 0 0 3 1 0. 0 0 3 1 0. 0 0 3 1 0. 0 0 3 1 MW - E 41 0. 1 5 3 3 5 0. 0 0 3 7 4 0 2 4 4 6. 3 8 8 3 2 E - 0 6 0. 0 0 3 1 0. 0 0 3 1 0. 0 0 3 1 0. 0 0 3 1 MW - F 36 0. 1 3 3 4 3 0. 0 0 3 7 0 6 3 8 9 4. 7 9 6 1 7 E - 0 6 0. 0 0 3 1 0. 0 0 3 1 0. 0 0 3 1 0. 0 0 3 1 MW - I 30 0. 1 1 0 6 6 0. 0 0 3 6 8 8 6 6 7 3. 1 6 7 6 9 E - 0 6 0. 0 0 3 1 0. 0 0 3 1 0. 0 0 3 1 0. 0 0 3 1 MW - J 30 0. 1 4 0 7 2 0. 0 0 4 6 9 0 6 6 7 1. 1 4 6 9 9 E - 0 5 0. 0 0 3 1 0. 0 0 3 1 0. 0 0 3 1 0. 0 0 3 1 0. 0 0 3 1 0. 0 0 3 1 0. 0 0 3 1 0. 0 0 3 1 0. 0 0 3 1 0. 0 0 3 1 0. 0 0 3 1 0. 0 0 3 1 AN O V A 0. 0 0 3 1 0. 0 0 3 1 0. 0 0 2 2 6 0. 0 0 3 1 So u r c e o f V a r i a t i o n SS df MS F P- v a l u e F crit 0. 0 0 3 1 0. 0 0 3 1 0. 0 0 5 2 4 0. 0 0 3 1 Be t w e e n G r o u p s 2. 2 3 8 1 6 E - 0 5 3 7. 4 6 0 5 3 E - 0 6 1. 1 7 0 2 5 9 1 3 1 0. 3 2 3 6 0 0 7 1 6 3.2158533 0. 0 0 3 1 0. 0 0 3 1 0. 0 0 7 8 4 0. 0 1 1 6 Wi t h i n G r o u p s 0. 0 0 0 8 4 7 8 8 9 13 3 6. 3 7 5 1 1 E - 0 6 0. 0 0 3 1 0. 0 0 3 1 0. 0 0 6 8 0. 0 0 6 2 0. 0 0 3 1 0. 0 0 3 1 0. 0 0 3 1 0. 0 0 3 1 To t a l 0. 0 0 0 8 7 0 2 7 1 13 6 0. 0 0 3 1 0. 0 0 3 1 0. 0 1 0 8 0. 0 0 3 1 NO T S I G N I F I C A N T 0. 0 0 3 1 0. 0 0 1 5 6 0. 0 0 3 1 0. 0 0 3 1 0. 0 0 3 1 0. 0 0 6 0 3 0. 0 0 3 1 0. 0 0 3 1 0. 0 0 3 1 0. 0 1 1 5 0. 0 0 3 1 0. 0 0 3 1 0. 0 0 3 1 0. 0 0 3 1 0. 0 0 3 1 0. 0 0 2 1 1 0. 0 0 3 1 0. 0 0 4 7 0. 0 0 3 1 2 0. 0 0 3 1 0. 0 0 3 2 6 0. 0 0 3 1 0. 0 0 3 1 0. 0 0 6 0 6 0. 0 1 7 6 0. 0 0 3 1 0. 0 0 3 1 0. 0 0 5 8 9 0. 0 0 9 9 1 0. 0 0 3 1 0. 0 0 2 2 2 0. 0 1 4 2 0. 0 0 4 0 3 0. 0 0 3 1 0. 0 0 3 3 5 0. 0 0 6 1 7 0. 0 0 3 1 0. 0 0 3 1 0. 0 0 3 1 0. 0 0 3 1 0. 0 0 3 1 0. 0 0 3 5 1 0. 0 0 3 1 0. 0 0 3 1 2 0. 0 0 3 1 0. 0 0 3 1 0. 0 0 3 9 3 0. 0 0 7 8 7 0. 0 0 3 1 0. 0 0 2 1 0. 0 0 3 1 0. 0 0 3 1 0. 0 0 3 1 0. 0 0 3 1 0. 0 0 3 1 0. 0 1 5 5 0. 0 0 3 1 0. 0 1 2 8 0. 0 0 3 1 0. 0 0 3 1 0. 0 0 3 1 0. 0 0 3 1 0. 0 0 3 1 0. 0 0 4 4 3 0. 0 0 3 1 0. 0 0 3 1 0. 0 0 6 9 5 0. 0 0 3 1 0. 0 0 3 1 0. 0 0 3 1 0. 0 0 3 1 0. 0 0 3 1 0. 0 0 3 1 Co n c e n t r a t i o n e x c e e d s N C 2 L S t a n d a r d Le a d MW - E MW - F MW - I MW - J An o v a : S i n g l e F a c t o r 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 SU M M A R Y 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 Gr o u p s Co u n t Su m Av e r a g e Va r i a n c e 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 MW - E 37 0. 0 0 9 3 4 0. 0 0 0 2 5 2 4 3 2 7. 5 0 6 1 9 E - 0 7 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 MW - F 36 0. 0 2 7 4 0 1 0. 0 0 0 7 6 1 1 3 9 9. 0 6 0 7 8 E - 0 6 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 MW - I 30 0. 0 0 3 3 0. 0 0 0 1 1 3. 0 4 0 0 7 E - 3 9 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 MW - J 30 0. 0 0 3 3 0. 0 0 0 1 1 3. 0 4 0 0 7 E - 3 9 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 AN O V A 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 So u r c e o f V a r i a t i o n SS df MS F P- v a l u e F crit 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 Be t w e e n G r o u p s 9. 8 1 6 0 6 E - 0 6 3 3. 2 7 2 0 2 E - 0 6 1. 2 2 6 4 7 4 2 8 7 0. 3 0 2 8 1 7 8 9 5 3.2190076 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 Wi t h i n G r o u p s 0. 0 0 0 3 4 4 1 5 12 9 2. 6 6 7 8 3 E - 0 6 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 To t a l 0. 0 0 0 3 5 3 9 6 6 13 2 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 NO T S I G N I F I C A N T 0. 0 0 0 1 1 0. 0 1 7 2 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 6 4 6 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 5 3 8 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 0. 0 0 0 1 1 Co n c e n t r a t i o n e x c e e d s N C 2 L S t a n d a r d Th a l l i u m MW - E MW - F MW - I MW - J An o v a : S i n g l e F a c t o r 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 1 4 SU M M A R Y 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 1 4 Gr o u p s Co u n t Su m Av e r a g e Va r i a n c e 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 1 4 MW - E 41 0. 2 0 9 7 3 0. 0 0 5 1 1 5 3 6 6 0. 0 0 0 1 2 2 6 0 9 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 1 4 MW - F 36 0. 0 5 8 2 5 0. 0 0 1 6 1 8 0 5 6 5. 9 1 7 1 3 E - 0 7 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 1 4 MW - I 30 0. 3 0 6 3 3 0. 0 1 0 2 1 1 0. 0 0 0 1 2 2 5 1 3 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 1 4 MW - J 30 0. 4 6 0 4 0. 0 1 5 3 4 6 6 6 7 0. 0 0 0 8 1 1 1 1 1 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 1 4 AN O V A 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 4 8 0. 0 0 1 4 So u r c e o f V a r i a t i o n SS df MS F P- v a l u e F crit 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 9 9 7 0. 0 0 1 4 Be t w e e n G r o u p s 0. 0 0 3 5 4 5 8 5 9 3 0. 0 0 1 1 8 1 9 5 3 4. 9 1 2 4 6 6 4 4 0. 0 0 2 8 6 6 5 8 5 3.2158533 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 5 7 3 0. 0 0 1 4 Wi t h i n G r o u p s 0. 0 3 2 0 0 0 1 6 7 13 3 0. 0 0 0 2 4 0 6 0 3 0. 0 0 1 4 0. 0 0 1 4 0. 0 2 0 8 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 1 4 0. 0 1 8 9 0. 0 0 7 3 3 To t a l 0. 0 3 5 5 4 6 0 2 6 13 6 0. 0 0 1 4 0. 0 0 1 4 0. 0 1 6 0. 0 0 0 9 SI G N I F I C A N T 0. 0 0 1 4 0. 0 0 1 3 4 0. 0 1 4 4 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 1 4 0. 0 1 0 6 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 4 5 0. 0 0 3 3 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 2 5 4 0. 0 0 2 6 7 0. 0 0 1 4 0. 0 0 2 8 9 0. 0 0 1 4 0. 0 1 1 0. 0 4 5 0. 0 6 5 6 0. 0 0 1 4 0. 0 0 6 2 2 0. 0 4 6 6 0. 0 0 5 3 5 0. 0 0 1 4 0. 0 4 0 3 0. 0 8 9 3 0. 0 0 1 4 0. 0 0 1 4 0. 0 4 2 3 0. 0 3 6 5 0. 0 1 3 9 0. 0 0 1 4 0. 0 2 2 3 0. 0 0 7 3 7 0. 0 0 4 7 8 0. 0 0 1 4 0. 0 1 1 6 0. 0 1 1 8 0. 0 0 1 4 0. 0 0 1 6 9 0. 0 2 0 3 0. 0 4 4 7 0. 0 0 3 2 1 0. 0 0 1 4 0. 0 2 0 4 0. 0 2 5 3 0. 0 0 7 4 9 0. 0 0 1 4 0. 0 0 9 3 4 0. 1 1 9 0. 0 0 3 0 2 0. 0 0 4 7 8 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 1 4 0. 0 0 3 6 6 0. 0 0 1 4 0. 0 1 0 5 0. 0 0 1 4 0. 0 3 1 7 0. 0 0 1 4 0. 0 1 1 3 0. 0 0 1 4 0. 0 0 2 9 7 0. 0 0 1 8 9 0. 0 0 5 0 7 Co n c e n t r a t i o n e x c e e d s N C 2 L S t a n d a r d Va n a d i u m Cumberland County Landfill Permit # 2601-MSWLF-1997 T-Test Background MW-F t-Test: Two-Sample Assuming Unequal Variances 0.0068 0.0068 0.012 0.0068 Background MW-F 0.014 0.0068 Mean 0.010056098 0.006888889 0.016 0.0068 Variance 2.4509E-05 8.75364E-07 0.0068 0.0068 Observations 41 36 0.0176 0.0068 Hypothesized Mean Difference 0 0.0104 0.0068 df 43 0.0214 0.0068 t Stat 4.015574684 0.0156 0.0121 P(T<=t) one-tail 0.000116808 0.0207 0.0068 t Critical one-tail 1.681070703 0.0121 0.0068 P(T<=t) two-tail 0.000233617 0.0118 0.0068 t Critical two-tail 2.016692199 0.0172 0.0068 SIGNIFICANT 0.0245 0.0068 0.0159 0.0068 0.0134 0.0068 0.0068 0.0068 0.0068 0.00519 0.0068 0.0068 0.0068 0.0068 0.0068 0.0068 0.0068 0.0068 0.0129 0.0068 0.0068 0.0068 0.0068 0.00631 0.0068 0.0068 0.0068 0.0068 0.0068 0.0068 0.0068 0.0068 0.0068 0.0068 0.0068 0.0068 0.0068 0.0068 0.0068 0.0068 0.0068 0.0068 0.0068 0.0068 0.0068 0.0068 0.0068 0.0068 0.0068 0.0068 0.0068 Concentration exceeds NC2L Standard Arsenic Background MW-F t-Test: Two-Sample Assuming Unequal Variances 0.016 0.0011 0.021 0.0011 Background MW-F 0.023 0.0011 Mean 0.011093659 0.012033611 0.026 0.0011 Variance 0.000154 8.04033E-05 0.011 0.0011 Observations 41 36 0.0275 0.0011 Hypothesized Mean Difference 0 0.0132 0.0011 df 72 0.0426 0.0011 t Stat -0.384069818 0.0174 0.0011 P(T<=t) one-tail 0.351029317 0.0343 0.0300 t Critical one-tail 1.666293696 0.0161 0.0011 P(T<=t) two-tail 0.702058633 0.0373 0.0195 t Critical two-tail 1.993463567 0.0182 0.0116 NOT SIGNIFICANT 0.0347 0.0195 0.0200 0.0011 0.0321 0.0111 Concentration exceeds NC2L Standard 0.0129 0.00302 0.0011 0.0184 0.0011 0.0144 0.0011 0.00619 0.0011 0.0107 0.00313 0.0183 0.00791 0.0116 0.0011 0.013 0.0011 0.0157 0.0011 0.0174 0.00508 0.0159 0.0011 0.017 0.0044 0.0161 0.00263 0.0185 0.00188 0.0243 0.00185 0.0299 0.00117 0.0193 0.00214 0.0184 0.00231 0.0186 0.00376 0.0227 0.00208 0.0011 0.0011 0.0011 0.0011 Concentration exceeds NC2L Standard Cobalt Background MW-F t-Test: Two-Sample Assuming Unequal Variances 0.0014 0.0014 0.0014 0.0014 Background MW-F 0.0014 0.0014 Mean 0.005115366 0.001618056 0.0014 0.0014 Variance 0.000122609 5.91713E-07 0.0014 0.0014 Observations 41 36 0.0014 0.0014 Hypothesized Mean Difference 0 0.0014 0.0014 df 40 0.0014 0.0014 t Stat 2.016855963 0.0014 0.0014 P(T<=t) one-tail 0.025228818 0.0014 0.0014 t Critical one-tail 1.683851013 0.0014 0.0014 P(T<=t) two-tail 0.050457637 0.0014 0.0014 t Critical two-tail 2.02107539 0.0014 0.0014 NOT SIGNIFICANT 0.0014 0.0014 0.0014 0.0014 0.0014 0.0014 0.0014 0.00134 0.0014 0.0014 0.0014 0.0045 0.0014 0.0014 0.0014 0.00254 0.00289 0.0014 0.0656 0.0014 0.00535 0.0014 0.0014 0.0014 0.0139 0.0014 0.00478 0.0014 0.0014 0.00169 0.00321 0.0014 0.00749 0.0014 0.00302 0.00478 0.0014 0.0014 0.0014 0.0014 0.00366 0.0014 0.0105 0.0014 0.0317 0.0014 0.0113 0.0014 0.00297 0.00189 0.00507 Concentration exceeds NC2L Standard Vanadium Background MW-I t-Test: Two-Sample Assuming Unequal Variances 0.0014 0.0014 0.0014 0.0014 Background MW-I 0.0014 0.0014 Mean 0.002693659 0.004735 0.0014 0.0014 Variance 2.0773E-05 2.72064E-05 0.0014 0.0014 Observations 41 30 0.0014 0.0014 Hypothesized Mean Difference 0 0.0014 0.0014 df 57 0.0014 0.0014 t Stat -1.716966776 0.0014 0.0014 P(T<=t) one-tail 0.045707518 0.0014 0.0014 t Critical one-tail 1.672028888 0.0014 0.0005 P(T<=t) two-tail 0.091415035 0.0014 0.00634 t Critical two-tail 2.002465459 0.0014 0.00523 NOT SIGNIFICANT 0.0014 0.0142 0.0014 0.00377 0.0014 0.0103 0.0014 0.00615 0.0014 0.00482 0.0014 0.00155 0.0014 0.0014 0.0014 0.00177 0.0009 0.00273 0.0293 0.00217 0.00382 0.0186 0.00374 0.0206 0.00309 0.00991 0.00759 0.00171 0.0014 0.00663 0.0014 0.007 0.00231 0.00267 0.00129 0.0014 0.0014 0.0014 0.00331 0.00894 0.00405 0.0014 0.0014 0.0014 0.0015 Concentration exceeds NC2L Standard Chromium Background MW-I t-Test: Two-Sample Assuming Unequal Variances 0.016 0.0011 0.021 0.0011 Background MW-I 0.023 0.0011 Mean 0.011093659 0.001934 0.026 0.0011 Variance 0.000154 2.80782E-06 0.011 0.0011 Observations 41 30 0.0275 0.0011 Hypothesized Mean Difference 0 0.0132 0.0011 df 42 0.0426 0.0011 t Stat 4.668387154 0.0174 0.0011 P(T<=t) one-tail 1.55042E-05 0.0343 0.0011 t Critical one-tail 1.681952357 0.0161 0.0011 P(T<=t) two-tail 3.10084E-05 0.0373 0.0011 t Critical two-tail 2.018081703 0.0182 0.0011 SIGNIFICANT 0.0347 0.0011 0.0200 0.0011 0.0321 0.00413 0.0129 0.0011 0.0011 0.0011 0.0011 0.0011 0.0011 0.00577 0.0011 0.00148 0.00313 0.00152 0.00791 0.0011 0.0011 0.00267 0.0011 0.00271 0.0011 0.00418 0.00508 0.00136 0.0011 0.00388 0.0044 0.00807 0.00263 0.00135 0.00188 0.00185 0.00117 0.00214 0.00231 0.00376 0.00208 0.0011 0.0011 0.0011 0.0011 Concentration exceeds NC2L Standard Cobalt Background MW-I t-Test: Two-Sample Assuming Unequal Variances 0.0014 0.0014 0.0014 0.0014 Background MW-I 0.0014 0.0014 Mean 0.005115366 0.010211 0.0014 0.0014 Variance 0.000122609 0.000122513 0.0014 0.0014 Observations 41 30 0.0014 0.0014 Hypothesized Mean Difference 0 0.0014 0.0014 df 63 0.0014 0.0014 t Stat -1.915835596 0.0014 0.0014 P(T<=t) one-tail 0.029963241 0.0014 0.0014 t Critical one-tail 1.669402222 0.0014 0.0048 P(T<=t) two-tail 0.059926482 0.0014 0.00997 t Critical two-tail 1.998340543 0.0014 0.00573 NOT SIGNIFICANT 0.0014 0.0208 0.0014 0.0189 0.0014 0.016 0.0014 0.0144 0.0014 0.0106 0.0014 0.0033 0.0014 0.0014 0.0014 0.00267 0.00289 0.011 0.0656 0.00622 0.00535 0.0403 0.0014 0.0423 0.0139 0.0223 0.00478 0.0116 0.0014 0.0203 0.00321 0.0204 0.00749 0.00934 0.00302 0.0014 0.0014 0.00366 0.0105 0.0317 0.0113 0.0014 0.00297 0.00189 0.00507 Concentration exceeds NC2L Standard Vanadium Background MW-J t-Test: Two-Sample Assuming Unequal Variances 0.0068 0.0068 0.012 0.0068 Background MW-J 0.014 0.0068 Mean 0.010056098 0.007396 0.016 0.0068 Variance 2.4509E-05 1.44936E-05 0.0068 0.0068 Observations 41 30 0.0176 0.0068 Hypothesized Mean Difference 0 0.0104 0.0068 df 69 0.0214 0.0068 t Stat 2.558611399 0.0156 0.0068 P(T<=t) one-tail 0.006353441 0.0207 0.0068 t Critical one-tail 1.667238549 0.0121 0.0068 P(T<=t) two-tail 0.012706883 0.0118 0.0068 t Critical two-tail 1.994945415 0.0172 0.0068 SIGNIFICANT 0.0245 0.0068 0.0159 0.00242 0.0134 0.0068 0.0068 0.0068 0.0068 0.0068 0.0068 0.00427 0.0068 0.00316 0.0068 0.0068 0.0068 0.00581 0.0129 0.00869 0.0068 0.0143 0.0068 0.00873 0.0068 0.0068 0.0068 0.0068 0.0068 0.0068 0.0068 0.0068 0.0068 0.0249 0.0068 0.0068 0.0068 0.0068 0.0068 0.0068 0.0068 0.0068 0.0068 0.0068 0.0068 Concentration exceeds NC2L Standard Arsenic Background MW-J t-Test: Two-Sample Assuming Unequal Variances 0.0014 0.0014 0.0014 0.0014 Background MW-J 0.0014 0.0014 Mean 0.002693659 0.006596667 0.0014 0.0014 Variance 2.0773E-05 0.000105339 0.0014 0.0014 Observations 41 30 0.0014 0.0014 Hypothesized Mean Difference 0 0.0014 0.0014 df 37 0.0014 0.0014 t Stat -1.947140952 0.0014 0.0014 P(T<=t) one-tail 0.029569094 0.0014 0.0014 t Critical one-tail 1.68709362 0.0014 0.0014 P(T<=t) two-tail 0.059138188 0.0014 0.0014 t Critical two-tail 2.026192463 0.0014 0.00284 NOT SIGNIFICANT 0.0014 0.00338 0.0014 0.0014 0.0014 0.00449 0.0014 0.0014 0.0014 0.0014 0.0014 0.0014 0.0014 0.0014 0.0014 0.0014 0.0009 0.0154 0.0293 0.0215 0.00382 0.0373 0.00374 0.0154 0.00309 0.0035 0.00759 0.0014 0.0014 0.0171 0.0014 0.0114 0.00231 0.0390 0.00129 0.0014 0.0014 0.0014 0.00331 0.00894 0.00405 0.0014 0.0014 0.0014 0.0015 Concentration exceeds NC2L Standard Chromium Background MW-J t-Test: Two-Sample Assuming Unequal Variances 0.016 0.0011 0.021 0.0011 Background MW-J 0.023 0.0011 Mean 0.011093659 0.006105667 0.026 0.0011 Variance 0.000154 4.00412E-05 0.011 0.0011 Observations 41 30 0.0275 0.0011 Hypothesized Mean Difference 0 0.0132 0.0011 df 63 0.0426 0.0011 t Stat 2.210716198 0.0174 0.0011 P(T<=t) one-tail 0.01534704 0.0343 0.0011 t Critical one-tail 1.669402222 0.0161 0.00226 P(T<=t) two-tail 0.030694081 0.0373 0.0011 t Critical two-tail 1.998340543 0.0182 0.00332 SIGNIFICANT 0.0347 0.0011 0.0200 0.00383 0.0321 0.00753 0.0129 0.00585 0.0011 0.00605 0.0011 0.00782 0.0011 0.00808 0.0011 0.00866 0.00313 0.00972 0.00791 0.0127 0.0011 0.0193 0.0011 0.0118 0.0011 0.00777 0.00508 0.00478 0.0011 0.0114 0.0044 0.0106 0.00263 0.0285 0.00188 0.00185 0.00117 0.00214 0.00231 0.00376 0.00208 0.0011 0.0011 0.0011 0.0011 Concentration exceeds NC2L Standard Cobalt Background MW-J t-Test: Two-Sample Assuming Unequal Variances 0.0014 0.0014 0.0014 0.0014 Background MW-J 0.0014 0.0014 Mean 0.005115366 0.015346667 0.0014 0.0014 Variance 0.000122609 0.000811111 0.0014 0.0014 Observations 41 30 0.0014 0.0014 Hypothesized Mean Difference 0 0.0014 0.0014 df 35 0.0014 0.0014 t Stat -1.867116343 0.0014 0.0014 P(T<=t) one-tail 0.035139682 0.0014 0.0014 t Critical one-tail 1.689572458 0.0014 0.0014 P(T<=t) two-tail 0.070279365 0.0014 0.0014 t Critical two-tail 2.030107928 0.0014 0.0014 NOT SIGNIFICANT 0.0014 0.0014 0.0014 0.00733 0.0014 0.0009 0.0014 0.0014 0.0014 0.0014 0.0014 0.0014 0.0014 0.0014 0.0014 0.0014 0.00289 0.045 0.0656 0.0466 0.00535 0.0893 0.0014 0.0365 0.0139 0.00737 0.00478 0.0118 0.0014 0.0447 0.00321 0.0253 0.00749 0.119 0.00302 0.0014 0.0014 0.00366 0.0105 0.0317 0.0113 0.0014 0.00297 0.00189 0.00507 Concentration exceeds NC2L Standard Vanadium c d m s m i t h . c o m