Loading...
HomeMy WebLinkAbout6709_OnslowCoMSW_MetalsASD_DIN27006_20161108O n s l o w C o u n t y S u b t i t l e D L a n d f i l l F a c i l i t y P e r m i t N o . 6 7 0 9 - M S W L F - 1 9 9 7 A l t e r n a t e S o u r c e D e m o n s t r a t i o n P r e p a r e d N o v e m b e r 2 0 1 6 O n s l o w C o u n t y , N o r t h C a r o l i n a 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 1646 Mail Service Center Raleigh, North Carolina 27699-1646 Subject: Onslow County Subtitle D Landfill Alternate Source Demonstration Facility Permit# 6709-MSWLF-1997 Dear Mr. Lane: CDM Smith Inc (CDM Smith), on behalf of Onslow County, is pleased to provide this Alternate Source Demonstration (ASD) for the Onslow 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 Onslow County Subtitle D Landfill is located off of Meadowview Road in Jacksonville, Onslow County, North Carolina. A site map is provided on Figure 1. The site is located within the Tidewater region of the Coastal Plain Physiographic Province. The Coastal Plain of North Carolina is approximately 90 to 150 miles wide from the Atlantic Ocean westward to its boundary with the Piedmont province. The Tidewater region is generally of low relief and contains many swampy areas. Land surface altitudes range from mean sea level (msl) to 50 feet msl throughout nearly the entire Tidewater region and average about 20 feet msl. However, elevations exceed 50 feet msl along a 25-mile long ridge extending from southern Onslow County into northern New Hanover County along the coast. Natural ground elevations at the landfill range from 77 feet msl to 96 feet msl. The site is located in the New River drainage basin, 5 miles southwest of the New River. Intermittent streams flowing northeast to the New River originate approximately 3.5 miles from the site. The site is also located less than 3.5 miles east of Southwest Creek, a tributary to the New River. Intermittent streams flowing to Southwest Creek originate 1,000 feet southwest of the site. Mr. Ervin Lane November 8, 2016 Page 2 6709_ASD Report_DRAFT.docx Surface drainage for the majority of the proposed site follows topography. Drainage along the eastern property boundary flows south into the drainage ditch that parallels the access road. Another existing drainage ditch, constructed between the existing LCID landfill and Subtitle D landfill, collects runoff from the southwest portion of the site, and then flows to the west. For the majority of the site, surface water flows towards the wetlands located on the western portion of the site. These wetlands drain to the intermittent streams that eventually flow to Southwest Creek. There are no perennial or intermittent streams located in or within 500 feet beyond the Subtitle D Landfill property boundaries. There are several small shallow ponds north and east of the Subtitle D landfill resultant from former borrow operations at the site. Upgradient (background) and downgradient (compliance) groundwater monitoring wells have been installed surrounding the Subtitle D landfill. There are two background wells at the site, MW-1 and MW- 1a. MW-1 serves as the shallow background well for the site and monitors the shallow portion of the surficial aquifer. MW-1a is the deeper background well for the site and monitors the deeper portion of the surficial aquifer, directly above the top of the Castle Hayne Confining Unit clay. The shallow site wells are generally completed to depths of approximately 15-feet below land surface. The deeper wells at the site are generally completed in areas where there is sufficient thickness in the surficial aquifer above the Castle Hayne Confining Unit. 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. The groundwater contours indicate a general semi-radial pattern from the north, with the majority of flow toward the wetland areas to the west. Groundwater flow direction and discharge is largely controlled by a ridge running through the middle 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 0.07 feet/day across the entire site. Site History There are 3 separate landfill units at the Onslow County Landfill facility: The active Subtitle D Landfill, two closed unlined landfill units, and an active LCID Landfill. The closed and LCID landfills are located south of the Subtitle D Landfill. Landfill units at the site are shown on Figure 1. The first Phase of the Subtitle D Landfill began receiving waste in early 1998. Groundwater samples for Appendix I volatile and inorganic compounds were first collected in December 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 (VOC) and metals. The analytical results were reported to the laboratory specific Mr. Ervin Lane November 8, 2016 Page 3 6709_ASD Report_DRAFT.docx 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 VOC was detected in any of the samples. Several metals were detected in all wells, however, select metals, particularly arsenic, cobalt, and vanadium were detected in both the upgradient and downgradient wells at concentrations above their respective NC2L or Groundwater Protection Standard (GWPS). Several metals have been detected in both upgradient and downgradient monitoring wells at levels above their respective NC2L or GWPS since initial sampling in 1997. A summary of the analytical results for metals for this and previous sampling events are provided in Appendix A. Historically, there have been very few reported detections of VOC in any of the wells associated with the Onslow County 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 several metals that have routinely exceeded the NC2L or GWPS at each monitoring well at the Onslow County Subtitle D Landfill. Metals routinely exceeding the 2L or GWPS for each well are shown on Table 1. For the purpose of this ASD, based on the data presented above, the following metals in groundwater are the constituents of concern (COC) for the Onslow County Subtitle D Landfill site: Arsenic, Cadmium, Chromium, Cobalt, Lead, Selenium, Thallium, and Vanadium. 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 clay in the strata 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 for the selected COC. In instances where results were below detection limits, a value less than or equal to the SWSL was substituted. The ANOVA comparisons for each COC are provided in Appendix B. Based on a Mr. Ervin Lane November 8, 2016 Page 4 6709_ASD Report_DRAFT.docx review of the ANOVA comparisons, lead, thallium, and vanadium 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 a value less than or equal to the SWSL 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: Selenium: MW-2 Cobalt: MW-6 For the wells with a statistically significant COC, further data evaluation was conducted. A review of historic sampling data indicated that the wells with statistically significant COCs tended to be more turbid than wells without. As shown on Table 1, CDM Smith evaluated maximum and average reported concentrations for each statistically significant COC. In most instances, both maximum and average reported concentrations for the COC in a given well were similar to the maximum and average concentration in the corresponding background well. Again, in wells where the maximum and average detections were not in correlation with the background wells, turbidity tended to be higher. In order to determine if turbidity was a contributing factor to total reported metals in previous sampling events, CDM Smith collected filtered samples during the August 2016 sampling event and had them analyzed for dissolved metals. As shown on Table 1, total detected concentrations during the August 2016 sampling event were often an order of magnitude higher than the dissolved (filtered) concentrations in the same well. CDM Smith then compared dissolved concentrations of the statistically significant COCs in the downgradient wells to the corresponding dissolved concentrations in the applicable background well. In the cases of selenium in MW-2 and cobalt in MW-2, both total and dissolved concentrations were below detection limits for the August 2016 sampling event, indicating that when well turbidity is low, detected concentrations of metals are low. Conclusions Based on qualitative and quantitative evaluation of current and historic groundwater sampling data, CDM Smith believes that NC2L exceedances of select inorganic compounds (metals) in downgradient wells at the Onslow County Landfill are not related to a release from the landfill but are indicative of naturally occurring background concentrations of the metals in groundwater. This conclusion is based on the following observations: Subtitle D Landfill MW-2 MW-3 MW-6 M-7 M-6 MW-5 M-5 MW-4 M-3a M-1 M-2 M-3 M-4 South Closed Unlined Landfill North Closed Unlined Category 1 Landfill M-4 M-2a M-2 M-16 M-15R M-1 MW-6 M-14 M-13 M-12 MW-5 MW-9 MW-8 M-11 M-10 M-9 M-8 MW-7 M-6SW-1 SW-2 SW-3 M-7 M-5 Subtitle D Landfill Groundwater Monitoring Well MW-5 Methane Monitoring Well M-1 Closed Unlined Landfills MW-9 Groundwater Monitoring Well M-2a Methane Monitoring Well SW-1 Surface Water Sample Location MW-2a MW-4a MW-1a LEGEND Appendix A Analytical Data - Metals Appendix A Detected Groundwater Constituents - Metals August 2016 Semi-Annual Sampling Event Onslow County Subtitle D Landfill Mo n i t o r i n g W e l l C o d e Sa m p l e D a t e 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 Nic k e l Se l e n i u m Si l v e r Th a l l i u m Va n a d i u m Zi n c 1* 10 700 4* 2 10 1* 1,000 15 100 20 20 0.2* 0.3* 1,000 6 10 100 1 1 10 10 10 10 50 10 10 5.5 25 10 MW-1 20-Dec-97 MW-1 14-Jul-98 20 4.6 120 46 110 72 MW-1 30-Jul-98 1.8 19 MW-1 13-Aug-98 MW-1 28-Oct-98 MW-1 7-Apr-99 MW-1 30-Nov-99 1.9 16.9 MW-1 28-Mar-00 MW-1 20-Sep-00 MW-1 8-May-01 MW-1 7-Nov-01 MW-1 21-Mar-02 10.4 MW-1 30-Oct-02 MW-1 1-Apr-03 MW-1 30-Oct-03 12 MW-1 10-Mar-04 MW-1 17-Nov-04 14.3 4.2 110 17 88.7 MW-1 22-Apr-05 MW-1 12-Oct-05 MW-1 20-Apr-06 MW-1 2-Oct-06 MW-1 12-Apr-07 2.02J 5.98J 9.82J 0.48J 0.94J 10.8J 8.04J MW-1 11-Oct-07 14.5J 2.45J 3.34J MW-1 10-Apr-08 3.3J 23.7J 0.21J 11.6 9.24J 5.56J 1.62J 4.99J 6.85J MW-1 30-Sep-08 29.9J 11.7 5.08J 6.44J 1.03J 6.01J 11.5 MW-1 8-Apr-09 1.87B 0.34JB 1.77J MW-1 9-Oct-09 0.13JB 27.5JB 9.24JB 2.68J 10.1B 3.51JB 8.96J 6.72JB MW-1 15-Apr-10 3.17J 10.7J 6.32J 3.61J 6.15J 4.45J MW-1 10-Nov-10 13.1J 0.195JB 4.27J 2.35J 3.99J 11.2 MW-1 5-Apr-11 29.8J 0.321J 23.9 1.58J 5.81J 7.73J 5.14J 3.45J 22.2J 53.6 MW-1 15-Nov-11 42.4J 0.288J 37.2 1.90J 8.33J 14.5 7.07J 2.01J 37.2 23.8 MW-1 9-May-12 16.0J 3.43J 1.69J 2.48J 0.50J 49.4 3.10J MW-1 16-Oct-12 14.2J 0.040J 23.2 4.09J 10.1 6.10 9.27J MW-1 25-Apr-13 2.2R 12R 8.8R 0.24J 2.8J 4.3R 1.2J 0.21J 0.041J 11R 8.6J MW-1 24-Oct-13 0.43J 3.5R 19R 0.35J 0.18J 15 0.50J 5.1R 9.1R 1.2J 1.1R 0.16J 0.33J 19R 12 MW-1 21-May-14 6.22J 52.9J 0.421J 72.7 3.82J 16.7 27.5 11.8J 71.50 35.3 MW-1 2-Dec-14 0.366J 14.3J 2.42 1.07J 1.60J MW-1 20-May-15 0.654J 11.1J 5.28J 5.24J 5.78J MW-1 21-Oct-15 3.25J 14.4J 5.37J 3.52J 0.968J 3.86J 7.33J MW-1 3-May-16 7.07J 2.27J 7.44JD 3.26J 25.4 MW-1 30-Aug-16 9.90J 3.14J 22.2 MW-1 (dissolved)30-Aug-16 9.22J 4.20J 4.85J North Carolina 2L or Groundwater Protection Standard Solid Waste Section Limit Page 1 of 11 Appendix A Appendix A Detected Groundwater Constituents - Metals August 2016 Semi-Annual Sampling Event Onslow County Subtitle D Landfill Mo n i t o r i n g W e l l C o d e Sa m p l e D a t e 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 Nic k e l Se l e n i u m Si l v e r Th a l l i u m Va n a d i u m Zi n c 1* 10 700 4* 2 10 1* 1,000 15 100 20 20 0.2* 0.3* 1,000 6 10 100 1 1 10 10 10 10 50 10 10 5.5 25 10 North Carolina 2L or Groundwater Protection Standard Solid Waste Section Limit MW-1a 20-Dec-97 23 15 52 MW-1a 14-Jul-98 14 MW-1a 30-Jul-98 MW-1a 13-Aug-98 MW-1a 28-Oct-98 1.4 MW-1a 7-Apr-99 MW-1a 30-Nov-99 MW-1a 28-Mar-00 MW-1a 20-Sep-00 MW-1a 8-May-01 MW-1a 7-Nov-01 MW-1a 21-Mar-02 MW-1a 30-Oct-02 MW-1a 1-Apr-03 MW-1a 30-Oct-03 MW-1a 10-Mar-04 MW-1a 17-Nov-04 MW-1a 22-Apr-05 MW-1a 12-Oct-05 MW-1a 20-Apr-06 MW-1a 2-Oct-06 MW-1a 12-Apr-07 7.64J 8.15J 0.45J 0.42J 12.2J 13.1J MW-1a 11-Oct-07 14.9J 2.59J 2.87J MW-1a 10-Apr-08 18.2J 0.18J 3.36J 6.33J 6.88J 1.38J 8.53J MW-1a 30-Sep-08 20.3J 1.65 2.43J 3.14J 4.98J 1.07J 0.61J 4.34J MW-1a 7-Apr-09 0.38B 1.17JB 7.53J MW-1a 8-Oct-09 23.9JB 6.2JB 2.67J 4.24JB 3.16JB 6.32J 5.37JB MW-1a 14-Apr-10 4.38J 17.6J 8.82J 1.35J 2.26J 6.73J 1.82J 8.95J 8.04J MW-1a 9-Nov-10 0.246JB 17.5J 0.123JB 4.98J 1.66J 2.09J 6.11J 9.85J MW-1a 4-Apr-11 0.328J 20.9J 2.74J 1.28J 2.73J 2.15J 5.52J 11.8J 14.3 MW-1a 14-Nov-11 0.255J 13.9J 1.51J 1.91J 2.49J 5.43J 12.1 MW-1a 8-May-12 9.36J 1.60J 3.50J 2.47J 0.140J 12.1 8.00J MW-1a 15-Oct-12 12.9J 0.16J 1.02J 3.50J 2.40J 19.9 MW-1a 24-Apr-13 0.67J 2.4R 7.8R 1.6R 0.16J 0.94J 1.4R 0.64J 1.6R 9.1R 6.7J MW-1a 24-Oct-13 0.16J 0.68J 7.5R 0.040J 0.87J 0.54J 1.7R 0.73J 0.52J 2.6J 13 MW-1a 20-May-14 0.890J 8.97J 2.85J 1.73J 7.25J 16.1J 9.66J MW-1a 2-Dec-14 0.768J 15.9J 4.88J 1.72J 2.50J 3.11J 2.62J 4.94J 6.51J MW-1a 20-May-15 0.705J 4.18J 2.48J 1.47J 9.50J 12.7 MW-1a 20-Oct-15 1.18J 23.2J 4.94J 3.97J 2.29J 0.968J 2.96J 9.87J MW-1a 3-May-16 7.95J 4.29J 3.46J 11.4D 6.24J 6.44J MW-1a dup 3-May-16 8.41J 6.05J 2.10J 2.74J 6.15J MW-1a 30-Aug-16 0.360J 14.1J 7.00J 4.16J 3.65J 30.0 MW-1a (dissolved)30-Aug-16 15.1J 1.60J 9.85J Page 2 of 11 Appendix A Appendix A Detected Groundwater Constituents - Metals August 2016 Semi-Annual Sampling Event Onslow County Subtitle D Landfill Mo n i t o r i n g W e l l C o d e Sa m p l e D a t e 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 Nic k e l Se l e n i u m Si l v e r Th a l l i u m Va n a d i u m Zi n c 1* 10 700 4* 2 10 1* 1,000 15 100 20 20 0.2* 0.3* 1,000 6 10 100 1 1 10 10 10 10 50 10 10 5.5 25 10 North Carolina 2L or Groundwater Protection Standard Solid Waste Section Limit MW-2 20-Dec-97 MW-2 14-Jul-98 1.2 25 11 40 MW-2 30-Jul-98 11 MW-2 13-Aug-98 11 MW-2 28-Oct-98 MW-2 6-Apr-99 MW-2 30-Nov-99 MW-2 28-Mar-00 MW-2 20-Sep-00 MW-2 8-May-01 MW-2 dup 8-May-01 MW-2 7-Nov-01 MW-2 21-Mar-02 MW-2 dup 21-Mar-02 MW-2 29-Oct-02 1.8 MW-2 1-Apr-03 12.5 MW-2 dup 1-Apr-03 MW-2 30-Oct-03 MW-2 10-Mar-04 1.3 MW-2 dup 10-Mar-04 12.2 1.1 MW-2 17-Nov-04 2.3 10.5 MW-2 22-Apr-05 MW-2 12-Oct-05 1.38 MW-2 20-Apr-06 MW-2 2-Oct-06 14.5 21.6 MW-2 12-Apr-07 2.93J 10.3J 6.36J 1.02J 1.05J 1.83J 7.64J 8.28J MW-2 11-Oct-07 14.8J 3.87J 1.74J 1.25J 0.78J 9.4J 3.98J MW-2 dup 11-Oct-07 13.9J 3.94J 1.26J 1.41J 1.09J 18.8 4.02J MW-2 10-Apr-08 21.2J 0.24J 5.99J 13.5 10.2 17.3 1.88J 5.16J MW-2 30-Sep-08 5.68J 21.3J 4.64J 6.71J 6.56J 27.1 1.03J 7.33 3.75J MW-2 7-Apr-09 0.62B 5.30JB 3.71JB 13 15.4 6.55J 4.17J MW-2 dup 7-Apr-09 0.65B 5.47JB 3.99JB 9.77J 19.8 5.47J 7.21J 5.97J MW-2 8-Oct-09 0.19JB 5.31J 22.7JB 0.25J 8.87JB 3.89J 7.75JB 16.8 23.7 4.02JB 6.93J MW-2 14-Apr-10 4.73J 22.6J 3.44J 2.90J 7.43J 11.8 5.71J 10.7J 19.2 MW-2 dup 14-Apr-10 3.99J 21.2J 1.77J 2.61J 5.08J 9.72J 6.14J 7.91J 14.5 MW-2 9-Nov-10 27J 0.134JB 1.56J 1.90J 7.94J 8.84J MW-2 4-Apr-11 21.5J 3.84J 2.74J 3.29J 11.7 0.363J 11.4J MW-2 14-Nov-11 12.9 16.7J 1.81J 3.33J 1.58J 0.199J 5.95J MW-2 8-May-12 3.81J 21.7J 7.95J 5.75J 15.1 3.64J 0.220J 17.0 16.8 MW-2 15-Oct-12 8.22J 0.080J 4.06J 4.32J 3.30J 3.50J 5.2 7.26J MW-2 dup 15-Oct-12 9.84J 0.080J 3.21J 4.47J 12.1 2.20J 4.31J 4.60J 8.35J MW-2 24-Apr-13 6.1R 10R 0.14J 2.1R 1.0R 2.3J 9.2R 0.84J 1.8R 0.063J 0.32J 7.8R 7.2J MW-2 23-Oct-13 0.51J 14 21R 0.093J 0.21J 3.2R 2.9R 1.5J 3.3R 1.4R 0.10J 0.29J 8.8R 14 MW-2 20-May-14 0.220J 10.3J 2.65J 10.0 6.25J 6.87J MW-2 dup 20-May-14 10.3J 2.47J 8.90J 5.18J 5.05J MW-2 2-Dec-14 0.241J 7.70J 11.3J 1.64J 3.91J MW-2 20-May-15 10.4J 1.78J 1.98J 2.25J 8.82J MW-2 21-Oct-15 0.476J 3.02J 3.93J 1.97J MW-2 3-May-16 12.8 46.5J 3.58J 2.04J 4.33J 7.26JD 10.1J 5.91J MW-2 29-Aug-16 16.4 28.0J 3.83J 1.28J 2.84J 0.126J 9.13J 13.0 MW-2 (dissolved)29-Aug-16 8.77J 23.4J 2.52J 1.73J Page 3 of 11 Appendix A Appendix A Detected Groundwater Constituents - Metals August 2016 Semi-Annual Sampling Event Onslow County Subtitle D Landfill Mo n i t o r i n g W e l l C o d e Sa m p l e D a t e 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 Nic k e l Se l e n i u m Si l v e r Th a l l i u m Va n a d i u m Zi n c 1* 10 700 4* 2 10 1* 1,000 15 100 20 20 0.2* 0.3* 1,000 6 10 100 1 1 10 10 10 10 50 10 10 5.5 25 10 North Carolina 2L or Groundwater Protection Standard Solid Waste Section Limit MW-2a 20-Dec-97 MW-2a 14-Jul-98 MW-2a 30-Jul-98 MW-2a 13-Aug-98 1 MW-2a 28-Oct-98 MW-2a 6-Apr-99 MW-2a 30-Nov-99 MW-2a 28-Mar-00 MW-2a 20-Sep-00 MW-2a 8-May-01 MW-2a 7-Nov-01 MW-2a 21-Mar-02 MW-2a 29-Oct-02 MW-2a dup 29-Oct-02 MW-2a 1-Apr-03 13.5 MW-2a 30-Oct-03 MW-2a 10-Mar-04 1.02 MW-2a 17-Nov-04 1.3 10.2 MW-2a 22-Apr-05 MW-2a 12-Oct-05 1.16 MW-2a dup 12-Oct-05 MW-2a 20-Apr-06 MW-2a 2-Oct-06 12.9 25.1 MW-2a 12-Apr-07 16.3 10.9J 0.88J 7.0J 5.08J 0.6J 1.6J 12.3J 14.0J MW-2a 11-Oct-07 12.6J 2.81J 0.87J 3.72J MW-2a 10-Apr-08 22.3J 0.19J 8.13J 13.2 8.99J 23.9 1.97J 4.66J 4.85J MW-2a 30-Sep-08 4.85J 25.5J 4.24 4.63J 8.53J 9.82J 25.8 1.39J 1.93J 4.19J MW-2a 8-Apr-09 0.35JB 3.84J 4.66JB 7.47J 23.7 1.35J MW-2a 8-Oct-09 0.22JB 8.45J 28.5JB 13.4B 4.36J 17.5B 14.1 5.04J 27 3.67JB 13.9J 6.83JB MW-2a 14-Apr-10 0.486J 70.8 21.1J 3.86J 6.14J 10.6 7.04J 7.02J 8.74J 13.5 MW-2a 9-Nov-10 18.2 28.9J 12.7 2.89J 8.35J 17.6 3.14J 22.1J 11.7 MW-2a 4-Apr-11 0.339J 79.4 12.7J 4.52J 2.58J 2.72J 12.6 0.374J 21.1J 12.5 MW-2a 14-Nov-11 11.5 10.3J 5.33J 1.52J 3.60J 6.09J 7.67J 7.22J MW-2a 9-May-12 6.84J 4.66J 2.26J 1.36J 1.92J 0.160J 16.2 5.71J MW-2a 15-Oct-12 15.5 11.9J 0.20J 2.19J 9.05J 3.70J 3.78J 3.40J 17.8 MW-2a 24-Apr-12 0.55J 240 5.3R 5.5R 0.95J 1.3J 5.3R 1.7J 1.7R 0.025J 31 5.8J MW-2a 23-Oct-13 0.16J 18 7.2R 2.3R 0.70J 5.2R 5.3R 0.65J 1.5R 0.037J 0.033J 4.2J 12 MW-2a dup 23-Oct-13 0.21J 30 7.3R 0.061J 2.4R 0.72J 5.0R 5.8R 0.53J 1.3R 0.043J 0.054J 5.6R 14 MW-2a 20-May-14 0.539J 406 10.9J 5.24J 1.82J 10.6 2.12J 69.5 8.07J MW-2a 2-Dec-14 31 14.1J 3.02J 2.50J 6.75J 5.73J MW-2a 20-May-15 0.355J 255 23.2J 6.29J 2.59J 8.73J 61.7 7.40J MW-2a dup 20-May-15 0.422J 261 23.4J 6.22J 2.43J 9.40J 59.8 9.83 MW-2a 21-Oct-15 0.254J 34.1 20.3J 2.70J 1.95J 4.28J 2.53J 4.70J 13.7 MW-2a 3-May-16 71.0 23.5J 7.02J 3.33J 18.6 5.29JD 14.2J 9.44J MW-2a 30-Aug-16 26.5 28.6J 1.98J 1.94J 2.40J 0.163J 2.92J 16.9 MW-2a (dissolved) 30-Aug-16 21.0 30.3J 1.73J 1.56J 0.141J 2.79J MW-2a dup 30-Aug-16 25.0 28.9J 1.76J 2.31J 0.171J 2.98J 15.9 MW-2a dup (dissolved)30-Aug-16 22.0 28.7J 1.71J 1.45J 0.133J 2.84J Page 4 of 11 Appendix A Appendix A Detected Groundwater Constituents - Metals August 2016 Semi-Annual Sampling Event Onslow County Subtitle D Landfill Mo n i t o r i n g W e l l C o d e Sa m p l e D a t e 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 Nic k e l Se l e n i u m Si l v e r Th a l l i u m Va n a d i u m Zi n c 1* 10 700 4* 2 10 1* 1,000 15 100 20 20 0.2* 0.3* 1,000 6 10 100 1 1 10 10 10 10 50 10 10 5.5 25 10 North Carolina 2L or Groundwater Protection Standard Solid Waste Section Limit MW-3 1-Nov-98 MW-3 14-Jan-99 MW-3 10-Feb-99 MW-3 6-Apr-99 1.6 14.3 11.8 MW-3 30-Nov-99 14.9 MW-3 28-Mar-00 MW-3 20-Sep-00 MW-3 8-May-01 MW-3 7-Nov-01 MW-3 21-Mar-02 MW-3 30-Oct-02 1.4 21.5 MW-3 1-Apr-03 MW-3 30-Oct-03 MW-3 10-Mar-04 1.6 32.8 10.4 67 MW-3 17-Nov-04 20.7 3.5 63.2 10.4 19.8 123 51.8 MW-3 22-Apr-05 MW-3 12-Oct-05 MW-3 20-Apr-06 MW-3 2-Oct-06 MW-3 dup 2-Oct-06 2.4 MW-3 12-Apr-07 1.21J 3.32J 3.58J 8.63J 1.09J 13.4J 11.0J MW-3 11-Oct-07 10.2J 2.52J 3.54J MW-3 10-Apr-08 13.3J 0.21J 2.98J 6.7J 5.67J 1.45J 6.02J MW-3 30-Sep-08 15.9J 3.14 3.63J 4.31J 3.84J 0.97J 7.10J 8.25J MW-3 8-Apr-09 0.37JB 2.22JB MW-3 9-Oct-09 0.13JB 14.5JB 3.98JB 3.06J 2.69JB 3.85J 3.53JB 7.86J 3.41JB MW-3 15-Apr-10 5.69J 8.83J 10.1 1.89J 3.95J 5.86J 2.90J 28 14 MW-3 10-Nov-10 0.473JB 5.29J 0.127JB 5.01J 3.66J 9.50J 16.6 MW-3 5-Apr-11 6.29J 5.79J 1.26J 2.55J 2.16J 3.27J 12.1J 12.5 MW-3 15-Nov-11 7.60J 6.82J 1.15J 2.73J 3.66J 2.49J 12.5J 11.3 MW-3 dup 15-Nov-11 5.82J 4.39J 2.55J 2.54J 2.24J 7.98J 10.7 MW-3 9-May-12 11.6J 9.03J 3.85J 3.39J 2.67J 0.180J 48.2 9.77J MW-3 16-Oct-12 3.93J 7.66J 0.040J 39.4 18.1 17.2 11.8J 5.9J 43.2 MW-3 25-Apr-13 3.3R 5.0R 0.039J 9.7R 2.0R 7.8R 5.2R 4.1R 2.1R 0.037J 0.13J 14R 21 MW-3 24-Oct-13 0.23J 1.9J 0.048J 1.3R 0.43J 1.5J 1.0R 0.84J 1.2R 2.9J 13 MW-3 21-May-14 32.7 46.6J 0.841J 82.2 13.8 37.3 30.2 33.3J 3.74J 169.00 105 MW-3 2-Dec-14 2.10J MW-3 20-May-15 8.18J 9.90J 2.06J 3.70J 2.86J 22.9J 12.5 MW-3 21-Oct-15 1.30J 2.47J 0.944J 3.85J MW-3 3-May-16 1.95J 7.18JD 2.18J 18.8 MW-3 30-Aug-16 23.6J 3.34J 1.11J 1.56J 11.6 MW-3 (dissolved)30-Aug-16 2.10J Page 5 of 11 Appendix A Appendix A Detected Groundwater Constituents - Metals August 2016 Semi-Annual Sampling Event Onslow County Subtitle D Landfill Mo n i t o r i n g W e l l C o d e Sa m p l e D a t e 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 Nic k e l Se l e n i u m Si l v e r Th a l l i u m Va n a d i u m Zi n c 1* 10 700 4* 2 10 1* 1,000 15 100 20 20 0.2* 0.3* 1,000 6 10 100 1 1 10 10 10 10 50 10 10 5.5 25 10 North Carolina 2L or Groundwater Protection Standard Solid Waste Section Limit MW-4 1-Nov-98 11 MW-4 14-Jan-99 11.4 MW-4 10-Feb-99 MW-4 6-Apr-99 MW-4 30-Nov-99 MW-4 28-Mar-00 MW-4 20-Sep-00 MW-4 8-May-01 MW-4 7-Nov-01 MW-4 21-Mar-02 14 12.5 MW-4 30-Oct-02 10.9 MW-4 1-Apr-03 MW-4 30-Oct-03 MW-4 10-Mar-04 MW-4 17-Nov-04 MW-4 22-Apr-05 1.01 MW-4 12-Oct-05 MW-4 20-Apr-06 MW-4 2-Oct-06 MW-4 12-Apr-07 4.0J 96.8J 7.46J 1.0J 1.26J 7.0J 7.88J MW-4 dup 12-Apr-07 2.1J 98.8J 1.12J 7.22J 1.07J 1.51J 8.82J 11.3J MW-4 11-Oct-07 79.1J 4.08J 1.32J 0.4J 2.61J 6.54J MW-4 10-Apr-08 63.7J 3.75 0.22J 5.23J 7.15J 8.08J 1.15J 5.86J 4.22J MW-4 30-Sep-08 29.2J 3.63J 3.94J 5.73 5.97J 15.8 MW-4 8-Apr-09 0.53JB 0.40JB 7.09J MW-4 9-Oct-09 0.47JB 23.7JB 7.21JB 1.81J 4.41JB 2.95J 3.17JB 25 5.79JB MW-4 15-Apr-10 6.27J 31.5J 0.189J 12.7 1.6J 3.86J 12 15.6J 78.6 MW-4 10-Nov-10 0.456JB 29.7J 0.138JB 6.15J 4.67J 8.72J 29.2 MW-4 5-Apr-11 0.316J 14.5J 6.25J 3.23J 2.96J 18.3J 18.8 MW-4 dup 5-Apr-11 0.296J 16.2J 7.62J 3.08J 3.28J 3.42J 18.2J 9.38J MW-4 15-Nov-11 31.5J 0.151J 6.03J 1.74J 2.63J 4.06J 2.41J 8.80J 5.96J MW-4 9-May-12 14.9J 7.73J 4.47J 2.51J 0.60J 48.9 5.61J MW-4 16-Oct-12 0.06J 2.99J 6.67J 12.7 2.89J MW-4 25-Apr-13 1.5R 11R 0.070J 4.2R 0.77J 3.1J 6.2R 1.6J 1.0R 12R 13 MW-4 24-Oct-13 0.35J 1.3R 5.9R 1.4R 0.20J 1.6J 2.0R 0.31J 0.55J 12R 19 MW-4 21-May-14 0.232J 23.1J 0.194J 17.4 2.25J 6.21J 10.6 3.00J 1.59J 22.1J 22.5 MW-4 2-Dec-14 0.274J 8.82J 6.95J MW-4 20-May-15 13.5J 4.93J 3.15J 20.5J 8.24J MW-4 21-Oct-15 0.454J 6.79J 16.3J 4.39J MW-4 3-May-16 11.7J 4.81J 2.26J 9.26JD 9.76J 4.48J MW-4 30-Aug-16 7.14J 1.51J 3.23J 3.63J 19.5 MW-4 (dissolved)30-Aug-16 6.83J 6.95J 3.49J Page 6 of 11 Appendix A Appendix A Detected Groundwater Constituents - Metals August 2016 Semi-Annual Sampling Event Onslow County Subtitle D Landfill Mo n i t o r i n g W e l l C o d e Sa m p l e D a t e 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 Nic k e l Se l e n i u m Si l v e r Th a l l i u m Va n a d i u m Zi n c 1* 10 700 4* 2 10 1* 1,000 15 100 20 20 0.2* 0.3* 1,000 6 10 100 1 1 10 10 10 10 50 10 10 5.5 25 10 North Carolina 2L or Groundwater Protection Standard Solid Waste Section Limit MW-4a 8-May-01 13.2 20.3 23.0 55.0 MW-4a** 8-May-01 MW-4a 7-Nov-01 11.9 14.3 15.5 56.7 MW-4a** 7-Nov-01 13.9 54.1 MW-4a 21-Mar-02 52.4 1.1 27.5 37.4 42.8 55.8 46.6 142 MW-4a 30-Oct-02 86.1 2.8 6.2 52.6 85.2 93.2 116 101 320 MW-4a** 30-Oct-02 MW-4a 1-Apr-03 26.2 50.6 42.9 70 158 MW-4a** 1-Apr-03 11 32.5 50.7 MW-4a 30-Oct-03 92.6 2.8 3.2 64.3 76.4 89.2 109 12.2 106 315 MW-4a** 30-Oct-03 32.3 1.4 30.9 28.4 30.5 53.2 99.4 MW-4a 10-Mar-04 61.1 2.32 3.44 45.9 66.4 73.5 93.8 83.6 288 MW-4a** 10-Mar-04 18.6 Page 7 of 11 Appendix A Appendix A Detected Groundwater Constituents - Metals August 2016 Semi-Annual Sampling Event Onslow County Subtitle D Landfill Mo n i t o r i n g W e l l C o d e Sa m p l e D a t e 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 Nic k e l Se l e n i u m Si l v e r Th a l l i u m Va n a d i u m Zi n c 1* 10 700 4* 2 10 1* 1,000 15 100 20 20 0.2* 0.3* 1,000 6 10 100 1 1 10 10 10 10 50 10 10 5.5 25 10 North Carolina 2L or Groundwater Protection Standard Solid Waste Section Limit MW-5 1-Nov-98 1.4 41 52 77 MW-5 14-Jan-99 16.2 12 60.9 MW-5 10-Feb-99 12.3 52 MW-5 6-Apr-99 MW-5 30-Nov-99 10.7 27.2 80.1 MW-5 28-Mar-00 MW-5 20-Sep-00 MW-5 dup 20-Sep-00 MW-5 8-May-01 MW-5 7-Nov-01 MW-5 dup 7-Nov-01 MW-5 21-Mar-02 MW-5 30-Oct-02 MW-5 1-Apr-03 MW-5 30-Oct-03 28 71.5 MW-5 dup 30-Oct-03 MW-5 10-Mar-04 MW-5 17-Nov-04 MW-5 dup 17-Nov-04 MW-5 22-Apr-05 MW-5 12-Oct-05 MW-5 20-Apr-06 MW-5 dup 20-Apr-06 MW-5 2-Oct-06 MW-5 12-Apr-07 4.44J 90.9J 7.96J 1.67J 4.16J 19.4J MW-5 11-Oct-07 92.6J 3.02J 2.58J 1.19J 3.03J 2.89J 17.2J MW-5 10-Apr-08 67.5J 0.24J 2.86J 6.1J 9.48J 1.78J 8.78J MW-5 30-Sep-08 11.8 73.9J 0.46J 5.83J 4.58J 8.56J 12.0J 25.9 MW-5 7-Apr-09 60.1J 0.5B 2.29JB 11.8 MW-5 8-Oct-09 0.1JB 86.2JB 0.2J 3.05JB 4.96J 3.92JB 7.19J 4.74J 5.31J 3.38JB 3.71J 18.7B MW-5 dup 8-Oct-09 0.19JB 11.3 82.9JB 0.16J 5.27JB 6.58J 7.33JB 6.97J 9.11J 3.07JB 9.98J 25B MW-5 14-Apr-10 4.01J 68.2J 0.128J 3.42J 3.21J 2.81J 2.02J 14.5 MW-5 9-Nov-10 0.376JB 23.2 85.1J 0.360JB 6.48J 6.04J 2.32J 12 5.55J 19.9J 30.2 MW-5 dup 9-Nov-10 0.777JB 61.3J 0.206JB 2.13J 2.91J 2.31J 2.19J 12.7 MW-5 4-Apr-11 56.4J 0.546J 9.99J MW-5 14-Nov-11 12.1 56.5J 0.104J 1.37J 3.88J 13.6J 10.2 MW-5 8-May-12 63.2J 2.71J 3.04J 0.220J 26 14.6 MW-5 15-Oct-12 74.7J 0.140J 1.65J 6.90J 3.86J 3.41J 4.60J 22.6 MW-5 24-Apr-13 26 58R 0.18J 1.4R 2.6R 5.2R 11 3.4R 0.65J 0.022J 34 16 MW-5 dup 24-Apr-13 23 59R 0.24J 0.12J 1.2R 2.8R 5.2R 10 3.7R 0.54J 0.071J 0.21J 30 17 MW-5 23-Oct-13 0.12J 1.4R 30R 0.045J 0.057J 0.57J 0.93J 1.3R 0.83J 0.26J 0.067J 2.2J 17 MW-5 20-May-14 6.65J 63.0J 0.109J 2.70J 2.54J 5.01J 2.25J 5.96J 11.8 MW-5 2-Dec-14 14.8 40.5J 4.55J 5.16J 7.72J 7.69J MW-5 dup 2-Dec-14 14.1 38.3J 0.136J 1.54J 2.05J 2.97J 9.04J 6.93J MW-5 20-May-15 37.7J 0.111J 13.8 MW-5 21-Oct-15 26.9J 0.387J 9.29J MW-5 dup 21-Oct-15 12.0 26.4J 8.41J 12.0 MW-5 3-May-16 28.8J 8.27JD 1.50J 13.7 MW-5 30-Aug-16 13.8 25.0J 3.01J 0.146J 9.59J 15.0 MW-5 (dissolved)30-Aug-16 31.3J 0.209J 5.30J Page 8 of 11 Appendix A Appendix A Detected Groundwater Constituents - Metals August 2016 Semi-Annual Sampling Event Onslow County Subtitle D Landfill Mo n i t o r i n g W e l l C o d e Sa m p l e D a t e 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 Nic k e l Se l e n i u m Si l v e r Th a l l i u m Va n a d i u m Zi n c 1* 10 700 4* 2 10 1* 1,000 15 100 20 20 0.2* 0.3* 1,000 6 10 100 1 1 10 10 10 10 50 10 10 5.5 25 10 North Carolina 2L or Groundwater Protection Standard Solid Waste Section Limit MW-6 1-Nov-98 58 6.4 40 35 29 64 81 110 MW-6 14-Jan-99 10.2 3 10.4 MW-6 10-Feb-99 2.1 MW-6 dup 10-Feb-99 2 MW-6 6-Apr-99 MW-6 30-Nov-99 17.8 70.5 MW-6 28-Mar-00 MW-6 dup 28-Mar-00 MW-6 20-Sep-00 MW-6 8-May-01 MW-6 7-Nov-01 MW-6 21-Mar-02 MW-6 30-Oct-02 17.2 2.1 19.3 15.3 16.2 MW-6 1-Apr-03 MW-6 30-Oct-03 17.7 15.7 10.4 MW-6 10-Mar-04 12.4 16.2 12.1 MW-6 17-Nov-04 12.8 12.6 MW-6 22-Apr-05 MW-6 dup 22-Apr-05 MW-6 12-Oct-05 MW-6 20-Apr-06 MW-6 2-Oct-06 MW-6 12-Apr-07 3.41J 14.5J 9.62J 0.8J 1.17J 4.25J 10.7J 9.94J MW-6 11-Oct-07 3.6J 29.6J 6.71J 1.07J 1.38J 1.33J 2.72J 9.54J 5.63J MW-6 10-Apr-08 24.5J 0.27J 5.87J 6.21J 8.07J 1.88J 6.78 5.93J 8.59J MW-6 30-Sep-08 4.66J 33.4J 4.98 10.8 4.11J 5.40J 11.6 7.80J 1.19J 11.6J 23.6 MW-6 dup 30-Sep-08 15.6 45.7J 6.89 23.8 9.55J 9.61J 18.7 13.0J 11.3 37.3 60.2 MW-6 7-Apr-09 0.53JB 0.35JB 2.12J 3.59J MW-6 9-Oct-09 28.1JB 6.38JB 3.41J 4.06JB 4.94J 3.19JB 7.42J 3.63JB MW-6 15-Apr-10 5.44J 13.7J 3.32J 2.49J 4.27J 1.82J 6.69J 17.5 MW-6 10-Nov-10 0.431JB 17.1J 0.174JB 2.08J 5.14J 9.82J MW-6 5-Apr-11 11.0J 1.75J 0.286J 3.61J 11.6 MW-6 15-Nov-11 23.6J 2.52J 1.27J 2.20J 4.79J 4.12J MW-6 9-May-12 14.8 37.3J 30.6 11.8 10.2 23.3 20.6J 3.20J 2.74J 1.00J 119 31.0 MW-6 16-Oct-12 12.9 20.0J 0.080J 21.5 9.20J 5.64J 18.1 13.9J 5.60 8.40 28.1 MW-6 25-Apr-13 2.4R 13R 1.4R 0.47J 1.0J 1.0R 1.5J 3.6R 0.025J 5.0J 8.9J MW-6 24-Oct-13 0.23J 3.7R 12R 0.056J 0.083J 2.7R 1.0R 1.1J 3.2R 1.2J 1.0R 0.040J 0.039J 8.3R 17 MW-6 21-May-14 27.1 49.6J 0.735J 50.7 36.8 12.6 27.1 44.7J 69.60 104 MW-6 2-Dec-14 15.2J 2.78J 4.13J 4.54J MW-6 20-May-15 14.6J 1.54J 1.10J 3.59J MW-6 21-Oct-15 14.6J 2.48J 2.01J 6.41J 9.95J MW-6 3-May-16 12.4J 2.48J 4.27J 2.31J 8.39JD 4.66J 407 MW-6 30-Aug-16 18.5J 1.66J 1.97J 3.40J 13.2 MW-6 (dissolved) 30-Aug-16 18.1J 2.50J TW-2 30-Nov-99 12.4 TW-2 28-Mar-00 TW-2 20-Sep-00 Page 9 of 11 Appendix A Appendix A Detected Groundwater Constituents - Metals August 2016 Semi-Annual Sampling Event Onslow County Subtitle D Landfill Mo n i t o r i n g W e l l C o d e Sa m p l e D a t e 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 Nic k e l Se l e n i u m Si l v e r Th a l l i u m Va n a d i u m Zi n c 1* 10 700 4* 2 10 1* 1,000 15 100 20 20 0.2* 0.3* 1,000 6 10 100 1 1 10 10 10 10 50 10 10 5.5 25 10 North Carolina 2L or Groundwater Protection Standard Solid Waste Section Limit MW-7 15-Apr-04 10 28.4 12.3 10.3 46.7 68.1 MW-7 26-May-04 85.9 2.19 3.91 123 85.2 96.3 103 167 393 MW-7 15-Jul-04 10.6 12.1 12.2 MW-7 14-Sep-04 MW-7 17-Nov-04 68 3.9 93.4 78 62 87.4 125 311 MW-7 21-Apr-05 MW-7 12-Oct-05 MW-7 20-Apr-06 MW-7 2-Oct-06 MW-7 12-Apr-07 5.43J 22.1J 7.41J 1.81J 3.62J 8.31J 10.1J MW-7 11-Oct-07 8.28J 34.1J 8.34J 2.13J 1.15J 0.81J 7.61J 7.31J MW-7 10-Apr-08 30J 0.19J 4.11J 5.82J 6.09J 1.97J 6.76 6.06J 7.21 MW-7 dup 10-Apr-08 30.2J 0.17J 3.61J 6.8J 6.64J 2.03J 5.46J MW-7 30-Sep-08 38.8J 3.49 5.54J 3.43J 7.61J 1.07J 4.93J 21.3 MW-7 7-Apr-09 8.59J 0.35JB 1.68J MW-7 9-Oct-09 32.1JB 4.9JB 4.65J 3.4JB 4.63J 3.65J 3.37JB 5.32J 9.64JB MW-7 15-Apr-10 3.86J 26J 2.25J 3.59J 2.83J 2.7J 0.133J 4.1J 96.1 MW-7 10-Nov-10 0.518JB 21.9J 0.146JB 1.31J 1.71J 2.32J 3.81J 17.8 MW-7 5-Apr-11 2.95J 28.7J 1.94J 2.41J 0.494J 4.62J 85.9 MW-7 15-Nov-11 30.0J 2.93J 4.46J 3.00J 4.00J 0.899J 0.219J 5.92J 20.3 MW-7 9-May-12 6.33J 39.1J 16.6 6.46J 5.03J 12.5 11.8J 4.00J 2.22J 1.20J 17.3 64.7 MW-7 dup 9-May-12 5.72J 38.9J 15.8 7.48J 5.26J 11.6 10.9J 5.90 2.64J 0.90J 54.0 67.0 MW-7 16-Oct-12 2.00J 9.66J 0.040J 2.99J 10.6 8.00 3.60J 30.1 MW-7 25-Apr-13 9.0R 30R 0.18J 0.082J 3.5R 2.9R 1.4J 7.0R 3.6R 8.8R 1.0R 13R 66 MW-7 24-Oct-13 0.33J 2.6R 22R 0.11J 0.12J 0.82J 0.95J 1.1R 1.3J 3.0R 0.074J 0.24J 4.5J 25 MW-7 21-May-14 12.9 41.2J 0.166J 11.8 7.24J 2.03J 5.70J 6.45J 18.5J 33 MW-7 2-Dec-14 32.4J 4.20J 2.88J 5.02J MW-7 20-May-15 7.48J 43.8J 8.07J 4.21J 3.36J 0.286J 13.1J 14.8 MW-7 21-Oct-15 8.67J 31.7J 3.46J 3.21J 2.80J 0.244J 9.43J 13.5 MW-7 3-May-16 34.6J 1.84J 7.53JD 4.31J 12.7 MW-7 30-Aug-16 0.591J 45.8J 3.57J 4.38J 0.278J 3.54J 19.3 MW-7 (dissolved) 30-Aug-16 7.59J 31.3J 1.03J 1.90J 3.00J 0.214J 3.52J 4.98J Page 10 of 11 Appendix A Appendix A Detected Groundwater Constituents - Metals August 2016 Semi-Annual Sampling Event Onslow County Subtitle D Landfill Mo n i t o r i n g W e l l C o d e Sa m p l e D a t e 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 Nic k e l Se l e n i u m Si l v e r Th a l l i u m Va n a d i u m Zi n c 1* 10 700 4* 2 10 1* 1,000 15 100 20 20 0.2* 0.3* 1,000 6 10 100 1 1 10 10 10 10 50 10 10 5.5 25 10 North Carolina 2L or Groundwater Protection Standard Solid Waste Section Limit MW-8 30-May-08 153 130 5.45 1.44 69.9 101 37.8 85.7 122 27.8 3.92J 88.8 1,630 MW-8 9-Jul-08 26.3 61.2J 23.1 14.2 7.46J 15.4 22.9J 5.96 25.5 227 MW-8 28-Aug-08 29.7J 2.83J 3.94J 1.83J 0.94J 7.2J MW-8 30-Sep-08 31.9 60.2J 10.7 18.3 8.94J 21.3 21.5J 14.3 0.98J 8.19J 123 MW-8 8-Apr-09 33.8J 0.33JB 2.0J 4.82J MW-8 9-Oct-09 0.13JB 74.1JB 4.99JB 3.11J 3.25JB 2.64J 4.21J 3.4JB 5.24J 15.5B MW-8 15-Apr-10 4.56J 62.7J 0.104J 1.73J 2.81J 2.99J 2.52J 3.22J 97.2 MW-8 10-Nov-10 0.561JB 48.1J 0.218JB 2J 37.5 MW-8 5-Apr-11 3.85J 66.1J 0.130J 1.12J 3.42J 0.330J 2.44J 140 MW-8 15-Nov-11 63.6J 0.109J MW-8 9-May-12 51.3J 1.67J 2.10J 2.69J 32.1 12.6 MW-8 16-Oct-12 52.8J 0.020J 6.43J 6.00J 4.25J 6.46J MW-8 25-Apr-13 4.2R 89R 0.22J 0.11J 0.90J 0.22J 0.64J 3.4R 1.6J 18 0.028J 3.9J 58 MW-8 23-Oct-13 1.3R 65R 0.11J 0.40J 0.07J 0.35J 0.50J 1.2R 2.8J 23 MW-8 21-May-14 117 0.207J 2.45J 3.07J 27.3 MW-8 21-May-14 127 0.189J MW-8 20-May-15 141 0.116J 1.15J 3.45J 21.3 MW-8 21-Oct-15 99.0J 2.91J 11.5 MW-8 3-May-16 12.7 170 0.124J 2.36J 3.24J 4.75J 9.84JD 4.76J 50.7 MW-8 30-Aug-16 9.42J 138 2.69J 3.12J 2.45J 4.47J 6.16J 49.3 MW-8 (dissolved)30-Aug-16 110 3.20J 5.78J MW-8a 30-May-08 8.94 210 681 14.9 1.78 519 214 125 196 312 70 670 1,360 MW-8a 9-Jul-08 45.4J 18.3 4.28J 7.83J 4.86J 30.7 18.5 MW-8a 28-Aug-08 10.1 72.2J 44.3 11.8 12.5 23.1 20.1J 2.02J 69.8 74.9 MW-8a 1-Oct-08 4.41J 58.9J 6.89 16.9 5.15J 7.43J 6.10J 23.4J 27.7 MW-8a 8-Apr-09 24.5J 0.53JB 0.34JB 1.31J 4.54J MW-8a 9-Oct-09 0.16JB 42.8JB 6.2JB 2J 3.38JB 7.7J 2.89JB 10.8J 5.63JB MW-8a 15-Apr-10 3J 36.6J 0.332J 5.23J 1.62J 2.62J 7.91J 7.53J MW-8a 10-Nov-10 0.573JB 25.7J 0.306JB 2.32J 6.31J MW-8a 5-Apr-11 43.8J 0.282J 3.69J 4.05J 0.198J 6.47J 15.4 MW-8a 15-Nov-11 40.5J 0.233J 2.23J 8.12J 5.52J MW-8a 9-May-12 40.5J 1.47J 1.20J 1.98J 33.4 4.39J MW-8a 16-Oct-12 24.2J 0.040J 8.30J 1.60J 4.90J 3.07J MW-8a 25-Apr-13 1.2R 40R 0.25J 1.2R 0.52J 1.3J 0.50J 1.7J 1.2R 5.1R 11 MW-8a 24-Oct-13 0.18J 1.8R 32R 0.23J 0.31J 0.65J 0.25J 0.26J 1.3J 0.49J 0.053J 0.072J 8.9R 13 MW-8a 21-May-14 44.2J 24.8 3.92J 5.78J 20.5 MW-8a 2-Dec-14 54.9J 0.332J 5.32J 4.39J MW-8a 20-May-15 51.8J 0.217J 1.55J 5.79J MW-8a 21-Oct-15 41.7J 0.219J 6.02J MW-8a 3-May-16 61.4J 0.174J 1.53J 6.90JD 5.24J MW-8a 30-Aug-16 69.0J 0.244J 2.06J 3.55J 17.8 MW-8a (dissolved)30-Aug-16 57.0J 0.137J 2.26J Notes: 1. All units are in micrograms per liter (parts per billion). 2. * - Groundwater Protection Standard 3. ** - Indicates samples were filtered 4. J - Indicates the analytical result is an estimated concentration between the method detection limit and the method reporting limit. 6. R - Indicates that the analytical result is less than the Solid Waste Section Limit but greater than the laboratory reporting limit. 7. D - Indicates that the sample was analyzed at dilution. - Concentration exceeds 15A NCAC 02L .0202 or Groundwater Protection Standard. - Indicates the result is below the detection limit. 5. B - Indicates that the amount detected in the method blank was greater than the method detection limit. Page 11 of 11 Appendix A Appendix B Statistical Evaluations Ar s e n i c MW - 1 MW - 2 MW - 3 MW - 4 MW - 5 MW - 6 MW - 7 MW - 8 An o v a : S i n g l e F a c t o r 1 1 1 11 1 58 1 0 15 3 20 1 1 1 1 10 . 2 8 5 . 9 26 . 3 SU M M A R Y 1 1 1 1 1 1 10 . 6 1 Gr o u p s C o u n t S u m A v e r a g e V a r i a n c e 1 1 1 1 1 1 1 3 1 . 9 MW - 1 4 1 8 7 . 7 1 2 . 1 3 9 2 6 8 1 3 . 2 6 6 3 1 1 1 1 1 10 . 7 1 68 1 MW - 2 4 1 1 2 2 . 3 5 2 . 9 8 4 1 4 6 1 6 . 5 6 1 4 1 1 1 1 1 1 1 1 MW - 3 3 9 1 0 0 . 5 3 2 . 5 7 7 6 9 2 3 5 . 0 4 7 8 9 1 1 1 1 1 1 1 4 . 5 6 MW - 4 3 9 5 8 . 0 7 1 . 4 8 8 9 7 4 3 . 3 6 2 8 4 6 1 1 1 1 1 1 1 1 MW - 5 3 8 1 9 2 . 6 5 . 0 6 8 4 2 1 6 9 . 6 4 7 2 5 1 1 1 1 1 1 1 3 . 8 5 MW - 6 3 9 2 1 8 . 5 1 5 . 6 0 2 8 2 1 1 1 1 . 7 5 9 6 1 1 1 1 1 1 5 . 4 3 1 MW - 7 2 9 2 5 7 8 . 8 6 2 0 6 9 3 7 4 . 9 8 6 5 1 1 1 1 1 17 . 2 8. 2 8 1 MW - 8 20 25 8 . 2 3 12 . 9 1 1 5 1163.165 1 1 1 1 1 1 1 1 1 1 1 1 1 17 . 7 1 4 . 2 1 1 1 1 1 12 . 4 1 1 . 3 AN O V A 1 1 20 . 7 1 1 1 1 1 So u r c e o f V a r i a t i o n S S d f M S F P - v a l u e F c r i t 1 1 1 1 1 1 3 . 8 6 1 Be t w e e n G r o u p s 2 8 4 6 . 7 6 7 4 0 6 . 6 8 0 1 2 . 6 8 6 9 5 4 0 . 0 1 0 4 3 9 2 . 3 3 3 2 7 14 . 3 1 1 1 1 1 1 1 Wi t h i n G r o u p s 4 2 0 7 6 . 2 9 2 7 8 1 5 1 . 3 5 3 6 1 1 1 1 1 1 2 . 9 5 1 1 1 1 1 1 1 1 12 . 7 To t a l 44 9 2 3 . 0 5 28 5 1 1 1 . 2 1 4 4 . 4 4 3 . 4 1 6 . 3 3 9 . 4 2 SI G N I F I C A N T 1 1 1 1 1 3 . 6 1 2. 0 2 2 . 9 3 1 1 1 1 9 1 1 1 1 11 . 8 4. 6 6 2 . 6 3. 3 1 1 1 1 1 12 . 9 1 5 . 6 8 1 1 1 1 1 1 1 5 . 6 9 6 . 2 7 4 . 0 1 5 . 4 4 7 . 4 8 1 5 . 3 1 1 1 23 . 2 1 8 . 6 7 3. 1 7 4 . 7 3 1 1 1 1 1 1 1 1 12 . 1 1 1 1 1 1 1 1 14 . 8 1 12 . 9 3. 9 3 1 1 12 . 9 1 3 . 8 3 . 3 1 . 5 26 2. 4 1 1 1 1 . 3 1 . 4 3 . 7 2. 2 6 . 1 32 . 7 1 6 . 6 5 27 . 1 3. 5 14 1 1 14 . 8 1 6. 2 2 1 1 1 37 . 7 1 1 7 . 7 1 1 1 1 1 1 1 1 1 1 1 1 1 1 13 . 8 1 1 12 . 8 1 16 . 4 Ar s e n i c MW - 1 a M W - 2 a M W - 8 a A n o v a : S i n g l e F a c t o r 1 1 21 0 1 1 1 SU M M A R Y 1 1 10 . 1 Gr o u p s C o u n t S u m A v e r a g e V a r i a n c e 1 1 4 . 4 1 MW - 1 a 4 1 4 5 . 4 6 1 . 1 0 8 7 8 0 . 3 2 5 0 4 1 1 1 1 MW - 2 a 4 1 1 3 3 7 . 4 4 3 2 . 6 2 0 4 9 6 6 1 1 . 9 0 6 1 1 1 MW - 8 a 14 23 8 . 5 1 17 . 0 3 6 4 3 30 9 0 . 7 5 2 1 1 3 1 1 1 1 1 1 AN O V A 1 1 1 So u r c e o f V a r i a t i o n S S d f M S F P - v a l u e F c r i t 1 1 1 Be t w e e n G r o u p s 2 0 3 5 6 . 6 2 1 0 1 7 8 . 3 3 . 1 0 6 9 1 9 0 . 0 4 9 4 1 4 3 . 8 3 9 1 4 7 1 1 1 Wi t h i n G r o u p s 3 0 4 6 6 9 9 3 3 2 7 6 . 0 1 1 1 1 1 . 2 1 1 1 . 8 To t a l 32 5 0 2 5 . 6 95 1 1 NO T S I G N I F I C A N T 1 1 1 1 1 1 1 1 1 1 1 1 1 16 . 3 1 1 1 1 1 4 . 8 5 1 1 1 8 . 4 5 4. 3 8 70 . 8 1 18 . 2 1 79 . 4 1 11 . 5 1 6 . 8 4 1 15 . 5 2. 4 24 0 0. 6 8 18 1 40 6 1 31 1 25 5 1 34 . 1 1 71 . 0 1 26 . 5 Ca d m i u m MW - 1 MW - 2 MW - 3 MW - 4 MW - 5 MW - 6 MW - 7 MW - 8 An o v a : S i n g l e F a c t o r 0.1 0 . 1 0 . 1 0 . 1 1. 4 6.4 0. 1 1 . 4 4 4.6 1. 2 0. 1 0 . 1 0 . 1 3 3 . 9 1 0. 1 SU M M A R Y 1.8 0 . 1 0 . 1 0 . 1 0 . 1 2. 1 0. 1 0 . 1 Gr o u p s C o u n t S u m A v e r a g e V a r i a n c e 0.1 0 . 1 1 . 6 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 MW - 1 4 1 1 6 . 5 7 0 . 4 0 4 1 4 6 0 . 9 8 6 9 2 5 0.1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 3. 9 0. 3 3 MW - 2 4 1 7 3 . 9 1 . 8 0 2 4 3 9 9 3 . 1 2 1 3 6 0.1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 MW - 3 3 9 1 5 . 3 3 9 0 . 3 9 3 3 0 8 0 . 6 9 9 9 3 6 1.9 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 MW - 4 3 9 5 . 1 6 0 . 1 3 2 3 0 8 0 . 0 2 3 5 3 4 0.1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 MW - 5 3 9 6 . 4 8 4 0 . 1 6 6 2 5 6 0 . 0 5 0 6 2 7 0.1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 MW - 6 3 9 2 0 . 6 3 3 0 . 5 2 9 0 5 1 1 . 5 9 2 3 7 6 0.1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 MW - 7 2 8 1 0 . 6 9 2 0 . 3 8 1 8 5 7 0 . 9 9 2 8 3 7 0.1 0 . 1 1 . 4 0 . 1 0 . 1 2. 1 0. 1 0 . 1 MW - 8 20 3. 5 0. 1 7 5 0. 0 9 1 7 1 1 0.1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 9 0 . 0 2 0.1 1 . 8 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 1 0.1 0 . 1 1 . 6 0 . 1 0 . 1 0 . 1 0 . 3 5 0 . 1 AN O V A 0.1 0 . 1 3. 5 0.1 0 . 1 0 . 1 0 . 1 0 . 1 So u r c e o f V a r i a t i o n S S d f M S F P - v a l u e F c r i t 0.1 1 . 3 0 . 1 1 . 0 1 0 . 1 0 . 1 0 . 1 0 . 1 Be t w e e n G r o u p s 8 2 . 2 2 2 8 6 7 1 1 . 7 4 6 1 2 0 . 8 4 0 9 9 5 0 . 5 5 4 1 0 5 2 . 3 3 3 2 7 4.2 2 . 3 0. 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 Wi t h i n G r o u p s 3 8 8 2 . 8 0 6 2 7 8 1 3 . 9 6 6 9 3 0.1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 0.1 1 . 3 8 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 To t a l 39 6 5 . 0 2 9 28 5 0.1 0 . 1 3. 5 8 0.1 0 . 1 0 . 1 0 . 1 0 . 1 NO T S I G N I F I C A N T 0.1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 0 4 0.1 0 . 1 0 . 2 1 0 . 2 2 0 . 2 4 0 . 2 7 0 . 0 8 2 0.1 0 . 1 0 . 1 0 . 1 0 . 4 6 0 . 1 0 . 1 2 0. 2 1 0 . 2 4 0 . 3 7 0 . 4 0 . 5 3 . 5 0 . 1 0.1 0 . 1 0 . 1 0 . 1 0 . 2 0 . 1 0 . 1 0. 3 4 6 2 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 0.1 0 . 2 5 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 0.1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 0.1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 0.1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 0.1 0 . 1 0 . 0 4 0 . 0 6 0 . 1 4 0 . 0 8 0.1 0 . 1 0 . 0 3 9 0 . 0 7 0 . 1 0 . 1 0. 0 4 0 . 0 8 0 . 1 0 . 1 0 . 0 5 7 0 . 0 8 3 0.1 0 . 1 4 0 . 1 0 . 1 0 . 1 0 . 1 0. 1 8 0 . 2 1 0 . 1 0 . 1 0 . 1 0 . 1 0.1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 0.1 0 . 1 0 . 1 0 . 1 0 . 3 8 7 0 . 1 0.1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 0.1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 0.1 0 . 1 0.1 0 . 1 Ch r o m i u m MW - 1 MW - 2 MW - 3 MW - 4 MW - 5 MW - 6 MW - 7 MW - 8 An o v a : S i n g l e F a c t o r 1 1 1 1 1 40 2 8 . 4 69 . 9 12 0 25 1 1 1 1 12 3 23 . 1 SU M M A R Y 19 11 1 1 1 1 12 . 1 1 Gr o u p s C o u n t S u m A v e r a g e V a r i a n c e 1 11 14 . 3 1 1 1 1 10 . 7 MW - 1 4 1 5 6 1 . 0 4 1 3 . 6 8 3 9 7 1 0 . 4 6 5 8 1 1 14 . 9 1 1 1 93 . 4 1 MW - 2 4 1 1 4 0 . 1 7 3 . 4 1 8 7 8 1 9 . 6 4 0 8 8 1 1 1 1 1 1 1 4 . 9 9 MW - 3 3 9 3 6 6 . 6 9 9 . 4 0 2 3 0 8 3 0 1 . 0 6 5 8 16 . 9 1 1 1 1 1 1 1 . 7 3 MW - 4 3 9 1 4 8 . 6 1 3 . 8 1 0 5 1 3 1 7 . 0 6 9 7 8 1 1 1 1 1 1 1 1 MW - 5 3 9 8 9 . 6 2 . 2 9 7 4 3 6 2 0 . 4 4 8 7 7 1 1 1 1 1 1 1 1 MW - 6 3 9 2 8 7 . 0 1 7 . 3 5 9 2 3 1 1 2 9 . 1 9 1 1 1 14 1 1 7 . 4 1 1 MW - 7 2 9 3 5 1 . 8 7 1 2 . 1 3 3 4 5 7 5 9 . 7 8 8 5 1 1 21 . 5 1 0 . 9 1 19 . 3 8. 3 4 1 MW - 8 20 12 7 . 7 7 6. 3 8 8 5 251.08 10 . 4 1 1 1 1 1 4 . 1 1 1 1 1 1 1 2 8 15 . 7 5. 5 4 0 . 9 1 1 32 . 8 1 1 16 . 2 1 0 . 4 AN O V A 12 1 63 . 2 1 1 12 . 8 4.9 1 So u r c e o f V a r i a t i o n S S d f M S F P - v a l u e F c r i t 1 1 1 1 1 1 2 . 2 5 1 Be t w e e n G r o u p s 4 6 0 4 . 3 1 3 7 6 5 7 . 7 5 9 2 . 5 1 3 0 6 5 0 . 0 1 6 0 8 6 2 . 3 3 3 1 0 4 11 0 1 1 1 1 1 1 . 3 1 1 Wi t h i n G r o u p s 7 3 0 2 4 . 2 9 2 7 9 2 6 1 . 7 3 5 8 1 1 1 1 1 1 1 . 9 4 1 1 1 1 1 1 1 2 . 9 3 2 . 3 6 To t a l 77 6 2 8 . 6 28 6 1 1 8 . 6 3 7 . 4 6 7 . 9 6 9 . 6 2 16 . 6 2. 6 9 SI G N I F I C A N T 1 1 2 . 5 2 4 . 0 8 3 . 0 2 6 . 7 1 2 . 9 9 9.8 2 6 . 3 6 2 . 9 8 5 . 2 3 2 . 8 6 5 . 8 7 3 . 5 2.4 5 3 . 8 7 3 . 6 3 3 . 6 3 5 . 8 3 10 . 8 0. 8 2 11 . 6 5. 9 9 1 1 1 2 . 1 2 11 . 8 11 . 7 4. 6 4 3 . 9 8 7 . 2 1 3 . 0 5 6 . 3 8 1 1.7 7 5 . 3 1 0 . 1 1 2 . 7 1 3 . 3 2 8 . 0 7 9.2 4 8 . 8 7 5 . 0 1 6 . 1 5 6 . 4 8 2 . 0 8 3 . 4 6 6.3 2 3 . 4 4 5 . 7 9 6 . 2 5 1 1 . 7 5 1 4.2 7 1 . 5 6 6 . 8 2 6 . 0 3 1 2 . 5 2 1 23 . 9 3. 8 4 9 . 0 3 7 . 7 3 1 30 . 6 37 . 2 1.8 39 . 4 2. 9 9 1 21 . 5 3.4 3 7 . 9 5 9 . 7 4 . 2 1 . 4 1 . 4 23 . 2 4. 0 6 1 . 3 1 . 4 1 2 . 7 8. 8 2 . 1 82 . 2 1 7 . 4 1 50 . 7 15 3.2 1 1 1 2 . 7 8 72 . 7 1 9 . 9 4 . 9 3 1 1 . 5 4 2.4 2 1 1 1 1 2 . 4 8 5.2 8 1 . 7 8 1 4 . 8 1 1 2 . 4 8 5.3 7 1 1 1 . 5 1 1 1 . 6 6 2.2 7 3 . 5 8 1 3 . 8 3 Ch r o m i u m MW - 1 a M W - 2 a M W - 8 a A n o v a : S i n g l e F a c t o r 23 1 51 9 14 1 18 . 3 SU M M A R Y 1 1 44 . 3 Gr o u p s C o u n t S u m A v e r a g e V a r i a n c e 1 1 16 . 9 MW - 1 a 4 1 1 1 9 . 5 2 2 . 9 1 5 1 2 2 1 7 . 5 8 6 6 9 1 1 1 MW - 2 a 4 1 1 1 4 . 5 4 2 . 7 9 3 6 5 9 9 . 1 0 1 5 6 9 1 1 6 . 2 MW - 8 a 20 63 0 . 1 31 . 5 0 5 13 2 7 3 . 4 8 1 1 5 . 2 3 1 1 2 . 3 2 1 1 3 . 6 9 AN O V A 1 1 2 . 2 3 So u r c e o f V a r i a t i o n S S d f M S F P - v a l u e F c r i t 1 1 1 Be t w e e n G r o u p s 1 3 1 9 8 . 4 2 6 5 9 9 . 2 0 1 2 . 5 7 9 6 0 9 0 . 0 8 0 8 9 2 3 . 8 2 9 8 1 1 1 1 1 Wi t h i n G r o u p s 2 5 3 2 6 3 . 6 9 9 2 5 5 8 . 2 1 8 1 1 1 . 2 1 1 0 . 6 5 To t a l 26 6 4 6 2 10 1 1 1 1 NO T S I G N I F I C A N T 1 1 1 1 1 1 . 5 5 1 1 1 1 1 1 . 5 3 1 1 1 1 1 8. 1 5 7 2. 5 9 2 . 8 1 3. 3 6 1 2. 4 3 4 . 6 3 1. 1 7 3 . 8 4 6.2 13 . 4 8. 8 2 1 4. 9 8 12 . 7 2. 7 4 4 . 5 2 1. 5 1 5 . 3 3 1.6 2 . 2 6 1 1 1.6 5 . 5 0. 8 7 2 . 3 2. 8 5 5 . 2 4 4. 8 8 3 . 0 2 2. 4 8 6 . 2 9 1 2 . 7 4. 2 9 7 . 0 2 1 1 . 9 8 1 1 . 7 3 Co b a l t MW - 1 MW - 2 MW - 3 MW - 4 MW - 5 MW - 6 MW - 7 MW - 8 An o v a : S i n g l e F a c t o r 0. 1 0 . 1 0 . 1 0 . 1 41 3 5 1 2 . 3 10 1 0. 1 0 . 1 0 . 1 0 . 1 16 . 2 0. 1 85 . 2 14 . 2 SU M M A R Y 0. 1 0 . 1 0 . 1 0 . 1 12 . 3 0. 1 0 . 1 0 . 1 Gr o u p s C o u n t S u m A v e r a g e V a r i a n c e 0. 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 18 . 3 MW - 1 4 1 1 4 . 2 2 0 . 3 4 6 8 2 9 0 . 5 9 0 1 7 2 0. 1 0 . 1 0 . 1 0 . 1 27 . 2 17 . 8 78 0. 1 MW - 2 4 1 3 2 . 7 9 0 . 7 9 9 7 5 6 1 . 2 9 1 8 6 7 0. 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 3. 1 1 MW - 3 3 9 3 9 . 0 5 1 . 0 0 1 2 8 2 7 . 4 7 5 6 3 8 0. 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 2. 8 1 MW - 4 3 9 1 1 . 6 7 0 . 2 9 9 2 3 1 0 . 2 9 9 9 2 3 0. 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 MW - 5 3 9 1 2 3 . 6 4 3 . 1 7 0 2 5 6 6 6 . 8 0 4 1 4 0. 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 1. 1 2 MW - 6 3 9 1 6 7 . 5 3 4 . 2 9 5 6 4 1 7 7 . 1 8 7 9 0. 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 MW - 7 2 9 2 2 6 . 0 3 7 . 7 9 4 1 3 8 4 2 6 . 7 1 5 5 0. 1 0 . 1 0 . 1 0 . 1 0 . 1 15 . 3 2 . 1 3 0. 1 MW - 8 20 15 1 . 5 9 7. 5 7 9 5 507.1088 0. 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 0. 1 0 . 1 0 . 1 0 . 1 0 . 1 10 . 4 0.1 0 . 2 2 0. 1 0 . 1 0 . 1 0 . 1 0 . 1 12 . 1 0.1 0 . 0 7 AN O V A 0. 1 0 . 1 10 . 4 0. 1 0 . 1 0 . 1 4. 6 5 2 . 4 5 So u r c e o f V a r i a t i o n S S d f M S F P - v a l u e F c r i t 0. 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 3. 5 9 0. 1 Be t w e e n G r o u p s 2 0 4 8 . 8 3 7 2 9 2 . 6 9 2 . 9 7 7 5 3 4 0 . 0 0 4 9 9 7 2 . 3 3 3 1 0 4 0. 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 1. 7 1 1 . 1 5 Wi t h i n G r o u p s 2 7 4 2 5 . 5 5 2 7 9 9 8 . 2 9 9 4 6 0. 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 2. 4 1 0. 1 0. 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 4. 4 6 3 . 2 4 To t a l 29 4 7 4 . 3 8 28 6 0. 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 6. 4 6 3 . 1 2 SI G N I F I C A N T 0. 1 0 . 1 0 . 1 0 . 1 2. 5 8 1 . 0 7 0.1 0. 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 2.9 0. 1 1. 7 4 0. 1 0 . 1 0 . 1 4.1 1 0. 9 5 0. 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 7. 2 4 0. 1 0 . 1 3. 0 6 1 . 8 1 4 . 9 6 3 . 4 1 0.1 0. 1 0 . 1 1. 8 9 1 . 6 3 . 4 2 2 . 4 9 4 . 2 1 2.6 8 3 . 8 9 0. 1 0 . 1 6. 0 4 0. 1 3. 2 1 0. 1 2.9 1 . 2 6 0. 1 0 . 1 0 . 1 1. 8 4 0. 1 1.9 1 . 1 5 1 . 7 4 1 . 3 7 1 . 2 7 3 . 5 7 1.5 8 2 . 7 4 0. 1 0 . 1 0 . 1 11 . 8 1. 9 3 . 3 3 0. 1 0 . 1 0 . 1 9. 2 0. 1 0 . 1 2 0. 7 7 2. 6 0.4 7 0. 1 0 . 1 0 . 4 3 0 . 2 0 . 5 7 1 0.2 4 1 1 3 . 8 2 . 2 5 2 . 7 3 6 . 8 0. 5 2.9 0. 1 0 . 1 0 . 1 0 . 1 3.8 2 2 . 6 5 2 . 0 6 0. 1 0 . 1 1. 1 0. 1 1. 6 4 0. 1 0 . 1 0 . 1 2.0 1 0. 1 1. 9 8 0. 1 0 . 1 0 . 1 0 . 1 0. 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 0. 1 2. 0 4 0. 1 1. 2 8 Co b a l t MW - 1 a M W - 2 a M W - 8 a A n o v a : S i n g l e F a c t o r 0. 1 0 . 1 21 4 0. 1 0 . 1 0 . 1 SU M M A R Y 0. 1 0 . 1 11 . 8 Gr o u p s C o u n t S u m A v e r a g e V a r i a n c e 0. 1 0 . 1 0 . 1 MW - 1 a 4 1 1 1 . 2 2 0 . 2 7 3 6 5 9 0 . 2 7 8 6 2 4 0. 1 0 . 1 0 . 1 MW - 2 a 4 1 3 4 . 5 6 0 . 8 4 2 9 2 7 1 . 4 8 6 0 3 6 0. 1 0 . 1 2 MW - 8 a 20 25 6 . 2 9 12 . 8 1 4 5 22 7 7 . 5 3 4 0. 1 0 . 1 1. 6 2 0. 1 0 . 1 0 . 1 0. 1 0 . 1 0 . 1 AN O V A 0. 1 0 . 1 0 . 1 So u r c e o f V a r i a t i o n S S d f M S F P - v a l u e F c r i t 0. 1 0 . 1 0 . 1 Be t w e e n G r o u p s 2 4 2 1 . 8 5 9 2 1 2 1 0 . 9 2 9 2 . 7 6 5 8 4 5 0 . 0 6 7 7 9 3 . 8 2 9 8 1 1 0. 1 0 . 1 0 . 1 Wi t h i n G r o u p s 4 3 3 4 3 . 7 3 9 9 4 3 7 . 8 1 5 4 0. 1 0 . 1 0 . 5 2 0. 1 0 . 1 0 . 2 5 To t a l 45 7 6 5 . 5 8 10 1 0. 1 0 . 1 24 . 8 NO T S I G N I F I C A N T 0. 1 0 . 1 0 . 1 0. 1 0 . 1 0 . 1 0. 1 0 . 1 0 . 1 0. 1 0 . 1 0 . 1 0. 1 0 . 1 0. 1 0. 1 0 . 1 0. 1 0 . 1 0. 1 0 . 8 7 0. 1 0 . 1 0. 1 0 . 1 0. 1 0 . 1 2. 6 7 4 . 3 6 1. 3 5 3 . 8 6 0. 1 2. 8 9 1. 2 8 2 . 5 8 0. 1 1. 5 2 0. 1 0 . 1 0. 1 0 . 1 0. 1 6 0 . 9 5 0. 5 4 0 . 7 0. 1 1. 8 2 1. 7 2 2 . 5 0. 1 2. 5 9 0. 1 1. 9 5 0. 1 3. 3 3 0. 1 1. 9 4 Le a d MW - 1 MW - 2 MW - 3 MW - 4 MW - 5 MW - 6 MW - 7 MW - 8 An o v a : S i n g l e F a c t o r 1 1 1 1 1 29 10 . 3 85 . 7 46 11 1 11 . 4 1 2 1 0 . 4 96 . 3 15 . 4 SU M M A R Y 1 1 1 1 1 1 12 . 2 3. 9 4 Gr o u p s C o u n t S u m A v e r a g e V a r i a n c e 1 1 1 1 . 8 1 1 1 1 21 . 3 MW - 1 4 1 1 8 2 . 6 7 4 . 4 5 5 3 6 6 7 3 . 4 9 6 8 4 1 1 1 1 1 1 62 1 MW - 2 4 0 1 8 0 . 8 3 4 . 5 2 0 7 5 2 6 . 4 1 7 6 3 1 1 1 1 1 1 1 1 MW - 3 3 9 1 4 5 . 2 9 3 . 7 2 5 3 8 5 3 8 . 6 6 1 1 6 1 1 1 1 1 1 1 2 . 5 2 MW - 4 3 9 1 1 0 . 6 9 2 . 8 3 8 2 0 5 1 2 . 2 0 4 2 4 1 1 1 1 1 1 1 1 MW - 5 3 8 1 0 8 . 3 9 2 . 8 5 2 3 6 8 1 0 . 7 9 0 9 7 1 1 1 1 1 1 1 1 MW - 6 3 8 1 9 2 . 1 7 5 . 0 5 7 1 0 5 6 1 . 1 5 8 1 8 1 1 1 1 2 . 5 1 1 1 MW - 7 2 9 2 5 7 . 5 6 8 . 8 8 1 3 7 9 4 1 3 . 7 5 4 6 1 1 1 1 1 16 . 2 0. 8 1 1 MW - 8 20 15 1 . 0 4 7. 5 5 2 367.452 1 1 1 1 1 1 6 . 0 9 6 . 4 3 1 1 1 1 1 1 7 . 6 1 3 . 4 1 1 1 0 . 4 1 1 1 1 0 . 3 5 AN O V A 1 1 19 . 8 1 1 1 2 . 6 1 1 So u r c e o f V a r i a t i o n S S d f M S F P - v a l u e F c r i t 1 1 1 1 1 1 2 . 8 3 1 Be t w e e n G r o u p s 9 8 0 . 1 1 5 6 7 1 4 0 . 0 1 6 5 1 . 4 2 4 3 2 3 0 . 1 9 5 3 2 4 2 . 3 3 3 6 0 4 17 10 . 5 1 1 1 1 2 . 3 2 1 Wi t h i n G r o u p s 2 7 1 3 1 . 8 8 2 7 6 9 8 . 3 0 3 9 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 3 1 To t a l 28 1 1 2 28 3 1 1 1 1 1 . 6 7 0 . 8 1 2 . 5 1 NO T S I G N I F I C A N T 1 1 4 . 5 1 0 . 4 3 . 0 3 1 . 3 3 1 0 . 6 0. 4 8 1 . 0 2 5 . 6 7 8 . 0 8 3 . 4 8 8 . 0 7 7 1 0 . 7 8 3 . 8 4 1 8 . 5 6 1 1 . 6 1 . 1 5. 5 6 1 0 . 2 1 1 1 5 . 7 6. 4 4 6 . 5 6 1 1 7 . 1 9 1 4 . 2 1 1 3 5 . 8 6 1 2 3 . 2 1 4 . 2 7 1 1 16 . 8 3. 6 6 4 . 6 7 1 2 1 1 3. 6 1 1 1 . 8 1 2 . 9 6 1 1 1 2. 3 5 7 . 9 4 3 . 6 6 4 . 0 6 3 . 8 8 2 . 2 1 7. 7 3 1 1 . 7 1 1 1 23 . 3 14 . 5 1 17 . 2 6. 6 7 6 . 9 18 . 1 1 15 . 1 5.2 6 . 2 1 1 1 10 . 1 1 2 1 . 3 3 . 2 4. 3 9 . 3 30 . 2 10 . 6 5 . 0 1 27 . 1 9. 1 3 . 3 1 1 5 . 1 6 1 27 . 5 10 . 0 1 3 . 1 5 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 4 . 3 3 1 1 Le a d MW - 1 a M W - 2 a M W - 8 a A n o v a : S i n g l e F a c t o r 15 1 19 6 1 1 7 . 8 3 SU M M A R Y 1 1 23 . 1 Gr o u p s C o u n t S u m A v e r a g e V a r i a n c e 1 1 7 . 4 3 MW - 1 a 4 1 8 7 . 5 1 2 . 1 3 4 3 9 7 . 2 3 0 8 7 5 1 1 1 MW - 2 a 4 1 1 9 7 . 0 3 4 . 8 0 5 6 1 2 7 . 3 9 6 3 5 1 1 7 . 7 MW - 8 a 14 25 8 . 7 4 18 . 4 8 1 4 3 26 4 8 . 0 4 6 1 1 2 . 6 2 1 1 1 1 1 1 AN O V A 1 1 1 So u r c e o f V a r i a t i o n S S d f M S F P - v a l u e F c r i t 1 1 1 Be t w e e n G r o u p s 2 8 4 1 . 0 0 3 2 1 4 2 0 . 5 0 1 3 . 6 8 9 1 3 0 . 0 2 8 7 2 2 3 . 8 3 9 1 4 7 1 1 8 . 3 Wi t h i n G r o u p s 3 5 8 0 9 . 6 9 9 3 3 8 5 . 0 5 0 4 1 1 0 . 5 1 1 0 . 2 6 To t a l 38 6 5 0 . 6 9 95 1 1 NO T S I G N I F I C A N T 1 1 1 1 0 . 2 1 1 1 1 1 1 1 1 2 . 9 0. 4 5 5 . 0 8 1 1 6. 8 8 8 . 9 9 4. 9 8 9 . 8 2 1 7 . 4 7 1 1 4 . 1 6. 7 3 1 0 . 6 2. 0 9 17 . 6 1 1 2 . 6 2. 4 9 6 . 0 9 1 1 1 9 . 0 5 1. 4 5 . 3 1. 7 5 . 3 7. 2 5 1 0 . 6 3. 1 1 1 1 8 . 7 3 3. 9 7 1 3. 4 6 18 . 6 1 1 Se l e n i u m MW - 1 M W - 2 M W - 3 M W - 4 M W - 5 M W - 6 M W - 7 M W - 8 A n o v a : S i n g l e F a c t o r 1 1 1 1 1 1 1 27 . 8 1 1 1 1 1 1 1 1 SU M M A R Y 1 1 1 1 1 1 1 1 Gr o u p s C o u n t S u m A v e r a g e V a r i a n c e 1 1 1 1 1 1 1 1 4 . 3 MW - 1 4 1 5 0 . 2 4 8 1 . 2 2 5 5 6 1 1 . 1 7 6 2 5 6 1 1 1 1 1 1 1 1 MW - 2 4 1 1 6 0 . 6 7 3 . 9 1 8 7 8 4 6 . 5 3 7 0 6 1 1 1 1 1 1 1 4 . 2 1 MW - 3 3 9 4 8 . 8 0 4 1 . 2 5 1 3 8 5 1 . 1 0 9 1 0 4 1 1 1 1 1 1 1 1 MW - 4 3 9 4 7 . 6 6 1 . 2 2 2 0 5 1 1 . 7 6 1 1 2 7 1 1 1 1 1 1 1 1 MW - 5 3 9 4 9 . 4 9 1 . 2 6 8 9 7 4 1 . 8 2 3 0 9 4 1 1 1 1 1 1 1 3 . 4 2 MW - 6 3 9 6 5 . 8 4 1 . 6 8 8 2 0 5 3 . 3 0 7 9 7 8 1 1 1 1 1 1 3 . 6 2 1 MW - 7 2 8 5 9 . 4 9 9 2 . 1 2 4 9 6 4 5 . 3 3 1 2 1 3 1 1 1 1 1 1 1 2 . 1 MW - 8 20 97 . 8 7 4. 8 9 3 5 52.71049 1 1 1 1 1 1 1 6 1 1 1 1 1 1 1 1 8 1 1 1 1 1 1 1 1 . 2 AN O V A 1 1 1 1 1 1 3 . 6 5 1 So u r c e o f V a r i a t i o n S S d f M S F P - v a l u e F c r i t 1 1 1 1 1 1 1 1 Be t w e e n G r o u p s 4 1 3 . 2 8 8 7 7 5 9 . 0 4 1 2 5 4 . 8 8 7 8 3 4 3 . 2 E - 0 5 2 . 3 3 3 2 7 1 1 1 1 1 1 1 1 Wi t h i n G r o u p s 3 3 5 8 . 0 2 4 2 7 8 1 2 . 0 7 9 2 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 . 8 9 9 9 . 8 4 To t a l 37 7 1 . 3 1 3 28 5 1 1 1 1 . 2 6 1 4 . 2 5 4 1 SI G N I F I C A N T 1 21 . 6 1 1 1 1 8 . 0 0 1 1 . 8 3 1 1 1 1 8 . 8 0 1 9 . 4 1 1 1 7 . 8 3 . 0 0 1 1 7 . 3 1 1 1 1 1 1 27 . 1 1 1 5 . 3 1 1 1 1 1 5 . 4 1 1 1 1 1 1 23 . 7 1 1 1 1 1 1 1 3 . 2 7 1 1 1 7 . 5 3 1 1 1 1 1 1 3.4 5 1 1 1 1 3 . 2 2.0 1 1 . 5 8 1 1 1 5 . 6 0 1 1 2 . 1 1 0 . 6 5 3 . 6 0 1 3 . 3 1 . 2 0 . 5 5 0 . 2 6 1 . 0 0 0.2 1 1 . 8 1 1 . 5 9 1 1 1. 1 1 . 4 1 1 1 1 1 1 1 1 1 1 1.0 7 1 0 . 9 4 4 1 1 1 1 1 7 . 1 8 9 . 2 6 8 . 2 7 8 . 3 9 0. 9 6 8 1 1 . 1 1 1 1 1 7.4 4 7 . 2 6 1 1 Se l e n i u m MW - 1 a M W - 2 a M W - 8 a A n o v a : S i n g l e F a c t o r 1 1 70 1 1 1 SU M M A R Y 1 1 1 Gr o u p s C o u n t S u m A v e r a g e V a r i a n c e 1 1 1 MW - 1 a 4 1 5 6 . 4 7 8 1 . 3 7 7 5 1 2 3 . 0 8 8 9 9 1 1 1 MW - 2 a 4 1 1 7 2 . 0 4 4 . 1 9 6 0 9 8 6 3 . 4 4 0 1 2 1 1 1 MW - 8 a 20 98 . 4 4 4. 9 2 2 23 6 . 7 4 5 8 1 1 1 1 1 1 1 1 4 . 0 5 AN O V A 1 1 1 So u r c e o f V a r i a t i o n S S d f M S F P - v a l u e F c r i t 1 1 1 . 2 Be t w e e n G r o u p s 2 3 6 . 1 6 3 2 2 1 1 8 . 0 8 1 6 1 . 6 3 2 8 4 4 0 . 2 0 0 5 9 3 . 8 2 9 8 1 1 1 1 1 . 6 Wi t h i n G r o u p s 7 1 5 9 . 3 3 5 9 9 7 2 . 3 1 6 5 2 1 1 1 . 2 1 1 0 . 4 9 To t a l 73 9 5 . 4 9 9 10 1 1 1 1 NO T S I G N I F I C A N T 1 1 1 1 1 1 1 1 1 1 1 6 . 9 1 1 1 1 25 . 1 1 1 . 6 1 1 1 23 . 9 1 25 . 8 1 23 . 7 1 27 1 7 . 0 4 1 1 5. 5 2 1 1 1 1 1 1 3 . 7 1. 6 1 . 7 0. 5 2 1 . 5 1 1 1 1 1. 4 7 1 0. 9 6 8 1 11 . 4 1 1 1 Th a l l i u m MW - 1 M W - 2 M W - 3 M W - 4 M W - 5 M W - 6 M W - 7 M W - 8 A n o v a : S i n g l e F a c t o r 0. 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 0. 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 5. 9 6 SU M M A R Y 0. 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 Gr o u p s C o u n t S u m A v e r a g e V a r i a n c e 0. 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 MW - 1 4 1 4 . 7 3 0 . 1 1 5 3 6 6 0 . 0 0 5 0 8 0. 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 MW - 2 4 1 2 4 . 6 4 8 0 . 6 0 1 1 7 1 4 . 8 9 7 8 3 5 0. 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 MW - 3 3 9 4 . 0 1 0 . 1 0 2 8 2 1 0 . 0 0 0 1 8 4 0. 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 MW - 4 3 9 1 0 . 0 3 0 . 2 5 7 1 7 9 0 . 8 1 5 3 5 2 0. 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 MW - 5 3 9 4 . 4 9 0 . 1 1 5 1 2 8 0 . 0 0 5 4 6 6 0. 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 0. 3 3 MW - 6 3 9 1 1 . 6 0 5 0 . 2 9 7 5 6 4 1 . 1 5 6 5 3 9 0. 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 MW - 7 2 9 1 2 . 7 5 4 0 . 4 3 9 7 9 3 1 . 5 4 6 5 8 5 0. 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 MW - 8 20 8. 0 9 0. 4 0 4 5 1.712531 0. 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 6. 7 6 0. 1 0. 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 0. 1 12 . 5 0. 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 AN O V A 0. 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 So u r c e o f V a r i a t i o n S S d f M S F P - v a l u e F c r i t 0. 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 3 3 0 . 1 Be t w e e n G r o u p s 8 . 7 0 7 7 2 7 1 . 2 4 3 9 6 0 . 9 9 9 8 8 2 0 . 4 3 1 5 4 2 2 . 3 3 3 1 0 4 0. 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 Wi t h i n G r o u p s 3 4 7 . 1 0 5 7 2 7 9 1 . 2 4 4 1 0 6 0. 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 0. 4 9 4 0. 1 0. 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 2 1 9 0 . 1 To t a l 35 5 . 8 1 3 4 28 6 0. 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 1.2 0. 1 NO T S I G N I F I C A N T 0. 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 0. 1 0 . 1 0 . 1 0 . 1 0 . 1 6.7 8 1 0. 1 0 . 1 0 . 1 5. 7 3 0. 1 0 . 1 0 . 2 4 0. 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 0. 1 7. 3 3 0. 1 0 . 1 0 . 1 0 . 1 0 . 1 0. 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 0. 2 8 6 0. 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 0. 2 4 4 0. 1 0 . 1 0 . 1 0 . 1 0.5 4 6 0 . 2 8 6 0.1 0. 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 0. 2 7 8 0. 1 0. 3 6 3 0. 1 8 0. 6 0. 2 2 1 0. 1 0 . 1 9 9 0 . 1 0 . 1 0 . 1 0 . 1 0. 5 0. 2 2 0 . 1 3 0 . 1 0 . 1 0 . 1 0. 1 0 . 1 0 . 1 0 . 1 0 . 0 6 7 0 . 0 3 9 0. 1 0. 3 2 0. 1 0 . 1 0 . 1 0 . 1 0.3 3 0 . 2 9 0. 1 0 . 1 0 . 1 0 . 1 0. 1 0 . 1 0 . 1 0 . 1 0 . 1 1 1 0 . 1 0. 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 0. 1 0 . 1 0 . 1 0 . 1 0 . 1 0 . 1 0. 1 0 . 1 0 . 1 0 . 1 0 . 1 4 6 0 . 1 0. 1 0 . 1 0. 1 0 . 1 2 6 Th a l l i u m MW - 1 a M W - 2 a M W - 8 a A n o v a : S i n g l e F a c t o r 0. 1 0 . 1 0 . 1 0. 1 0 . 1 0 . 1 SU M M A R Y 0. 1 0 . 1 0 . 1 Gr o u p s C o u n t S u m A v e r a g e V a r i a n c e 0. 1 0 . 1 0 . 1 MW - 1 a 4 1 4 . 1 4 0 . 1 0 0 9 7 6 3 . 9 E - 0 5 0. 1 0 . 1 0 . 1 MW - 2 a 4 1 1 7 . 8 3 0 . 4 3 4 8 7 8 4 . 3 7 6 2 3 1 0. 1 0 . 1 0 . 1 MW - 8 a 20 2. 0 7 0. 1 0 3 5 0. 0 0 0 5 3 4 0. 1 0 . 1 0 . 1 0. 1 0 . 1 0 . 1 0. 1 0 . 1 0 . 1 9 8 AN O V A 0. 1 0 . 1 0 . 1 So u r c e o f V a r i a t i o n S S d f M S F P - v a l u e F c r i t 0. 1 0 . 1 0 . 1 Be t w e e n G r o u p s 2 . 7 2 0 2 6 2 2 1 . 3 6 0 1 3 1 0 . 7 6 9 1 7 7 0 . 4 6 6 1 4 3 3 . 8 2 9 8 1 1 0. 1 0 . 1 0 . 1 Wi t h i n G r o u p s 1 7 5 . 0 6 1 9 9 1 . 7 6 8 2 9 3 0. 1 0 . 1 0 . 1 0. 1 13 . 5 0. 0 7 2 To t a l 17 7 . 7 8 1 2 10 1 0. 1 0 . 1 0 . 1 NO T S I G N I F I C A N T 0. 1 0 . 1 0 . 1 0. 1 0 . 1 0 . 1 0. 1 0 . 1 0 . 1 0. 1 0 . 1 0 . 1 0. 1 0 . 1 0 . 1 0. 1 0 . 1 0. 1 0 . 1 0. 1 0 . 1 0. 1 0 . 1 0. 1 0 . 1 0. 1 0 . 1 0. 1 0 . 1 0. 1 0 . 1 0. 1 0 . 1 0. 1 0. 3 7 4 0. 1 0 . 1 0. 1 4 0 . 1 6 0. 1 0 . 1 0. 1 0 . 1 0. 1 0 . 0 3 3 0. 1 0 . 1 0. 1 0 . 1 0. 1 0 . 1 0. 1 0 . 1 0. 1 0 . 1 0. 1 0 . 1 6 3 Va n a d i u m MW - 1 MW - 2 MW - 3 MW - 4 MW - 5 MW - 6 MW - 7 MW - 8 An o v a : S i n g l e F a c t o r 1 1 1 1 1 81 4 6 . 7 8 8 . 8 11 0 40 1 1 1 1 16 7 2 5 . 5 SU M M A R Y 1 1 1 1 1 1 1 0 . 9 4 Gr o u p s C o u n t S u m A v e r a g e V a r i a n c e 1 1 1 1 1 1 1 8. 1 9 MW - 1 4 1 4 9 1 . 9 6 1 1 . 9 9 9 0 2 6 1 0 . 0 5 9 5 1 1 1 1 1 1 12 5 2 MW - 2 4 1 2 0 2 . 7 4 4 . 9 4 4 8 7 8 4 7 . 9 1 3 6 1 1 1 1 1 1 1 5. 2 4 MW - 3 3 9 5 6 9 . 1 1 4 . 5 9 2 3 1 1 1 6 9 . 9 8 1 1 1 1 1 1 1 3. 2 2 MW - 4 3 9 2 9 2 . 7 2 7 . 5 0 5 6 4 1 9 3 . 7 4 4 3 3 1 1 1 1 1 1 1 2 MW - 5 3 9 1 6 8 . 8 4 . 3 2 8 2 0 5 5 4 . 8 8 2 9 4 1 1 1 1 1 1 1 2. 4 4 MW - 6 3 9 4 0 0 . 5 1 0 . 2 6 9 2 3 5 8 6 . 5 8 9 9 1 1 1 1 1 1 8. 3 1 1 MW - 7 2 9 4 8 7 . 2 2 1 6 . 8 0 0 6 9 1 3 9 1 . 6 3 5 1 1 1 1 1 1 7. 6 1 3 2 . 1 MW - 8 20 20 0 . 4 8 10 . 0 2 4 410.1409 1 1 1 1 1 1 6. 0 6 1 1 1 1 1 1 1 4. 9 3 3 . 9 1 1 67 1 1 1 1 . 6 8 2.8 AN O V A 1 1 12 3 1 1 1 5. 3 2 3 . 0 7 So u r c e o f V a r i a t i o n S S d f M S F P - v a l u e F c r i t 1 1 1 1 1 1 4. 1 1 Be t w e e n G r o u p s 4 8 6 4 . 2 5 5 7 6 9 4 . 8 9 3 5 1 . 3 3 2 7 0 6 0 . 2 3 4 6 4 9 2 . 3 3 3 1 0 4 88 . 7 1 1 1 1 1 3. 8 1 3 . 4 5 Wi t h i n G r o u p s 1 4 5 4 7 4 . 9 2 7 9 5 2 1 . 4 1 5 3 1 1 1 1 1 1 4. 6 2 2 . 9 1 1 1 1 1 1 1 5. 9 2 4 . 7 6 To t a l 15 0 3 3 9 . 1 28 6 1 1 13 . 4 7 1 10 . 7 1 7 . 3 6 . 1 6 NO T S I G N I F I C A N T 1 1 1 6.5 4 1 9. 5 4 3 . 6 10 . 8 7 . 6 4 1 5.8 6 1 5. 9 3 1 3 . 0 1 1 7.1 5 . 9 7 1 2 1 1 . 6 4 . 5 4. 9 9 1 1 7.0 9 1 3. 5 9 1 8 . 5 6. 0 1 3 . 7 5 7 . 8 6 2 5 3 . 7 1 7 . 4 2 2 . 9 1 6. 5 5 2 8 1 5 . 6 2. 0 2 6. 6 9 1 3 . 1 8. 9 6 6 . 9 3 9 . 5 8 . 7 2 1 9 . 9 5 . 1 4 9 . 4 6. 1 5 1 0 . 7 1 2 . 1 1 8 . 3 1 3. 6 1 4 . 3 3. 9 9 8 . 8 4 1 2 . 5 8 . 8 1 3 . 6 4 . 7 9 3 . 5 22 . 2 1 1 . 4 4 8 . 2 4 8 . 9 2 6 1 1 9 37 . 2 5 . 9 5 5 . 9 0 1 2 . 7 4 . 6 8 . 4 0 49 . 4 1 7 . 0 1 4 . 0 0 1 2 3 4 5 . 0 0 6. 1 0 5 . 2 2 . 9 0 1 2 2 . 2 8 . 3 0 11 . 0 0 7 . 8 1 6 9 . 0 0 2 2 . 1 5 . 9 6 6 9 . 6 0 19 . 0 0 8 . 8 1 6 . 9 5 7 . 7 2 4 . 1 71 . 5 0 6 . 3 2 3 2 0 . 5 1 3. 6 1.6 3 . 9 1 16 . 3 1 6. 4 5.2 8 . 8 2 9 . 7 6 1 . 5 4 . 7 3.9 2 . 0 2 3 . 6 3 9 . 5 9 3 . 4 3.3 1 0 . 1 1 9. 1 Va n a d i u m MW - 1 a M W - 2 a M W - 8 a A n o v a : S i n g l e F a c t o r 1 1 67 0 1 1 30 . 7 SU M M A R Y 1 1 69 . 8 Gr o u p s C o u n t S u m A v e r a g e V a r i a n c e 1 1 23 . 4 MW - 1 a 4 1 1 5 1 . 5 4 3 . 6 9 6 0 9 8 1 6 . 7 8 8 3 4 1 1 1 . 3 1 MW - 2 a 4 1 3 3 0 . 3 2 8 . 0 5 6 5 8 5 2 2 4 . 2 2 3 7 1 1 10 . 8 MW - 8 a 20 91 4 . 0 4 45 . 7 0 2 21 8 5 2 . 6 9 1 1 7. 9 1 1 1 6. 3 1 1 1 6. 4 7 AN O V A 1 1 8. 1 2 So u r c e o f V a r i a t i o n S S d f M S F P - v a l u e F c r i t 1 1 33 . 4 Be t w e e n G r o u p s 2 5 8 9 1 . 5 1 2 1 2 9 4 5 . 7 6 3 . 0 1 6 7 2 4 0 . 0 5 3 4 8 4 3 . 8 2 9 8 1 1 1 1 4. 9 Wi t h i n G r o u p s 4 2 4 8 4 1 . 6 9 9 4 2 9 1 . 3 2 9 1 1 5. 1 1 1 8. 9 To t a l 45 0 7 3 3 . 1 10 1 1 1 1 NO T S I G N I F I C A N T 1 1 5. 3 2 1 1 5. 7 9 1 1 6. 0 2 1 1 5. 2 4 1 1 3. 5 5 1 1 12 . 2 1 2 . 3 1 1 1 4. 6 6 0. 6 1 1 . 9 3 7. 5 3 1. 3 5 6. 3 2 1 3 . 9 8. 9 5 8 . 7 4 6. 1 1 2 2 . 1 11 . 8 2 1 . 1 5. 4 3 7 . 6 7 12 . 1 1 6 . 2 2. 4 3 . 4 9. 1 3 1 2. 6 4 . 2 16 . 1 6 9 . 5 4. 9 4 6 . 7 5 9. 5 6 1 . 7 2. 9 6 4 . 7 6. 2 4 1 4 . 2 3. 6 5 2 . 9 2 Arsenic Background MW-2 t-Test: Two-Sample Assuming Unequal Variances 1 1 20 1 Background MW-2 1 1 Mean 2.112142857 3.465454545 1 1 Variance 12.97364652 19.47915682 1 1 Observations 42 33 1 1 Hypothesized Mean Difference 0 1 1 df 61 1 1 t Stat -1.42717098 1 1 P(T<=t) one-tail 0.079314847 1 1 t Critical one-tail 1.999623585 1 1 P(T<=t) two-tail 0.158629695 1 1 t Critical two-tail 2.29807788 1 1 NOT SIGNIFICANT 1 2.93 1 1 1 1 14.3 5.68 1 1 1 5.31 1 4.73 1 1 2.02 1 1 12.9 3.3 3.81 1 1 1 6.1 1 14 3.17 1 1 7.7 1 1 1 1 1 12.8 1 16.4 2.2 3.5 6.22 1 1 1 1 1 1 Cobalt Background MW-2 t-Test: Two-Sample Assuming Unequal Variances 0.1 0.1 0.1 0.1 Background MW-2 0.1 0.1 Mean 0.346829268 0.799756098 0.1 0.1 Variance 0.590172195 1.291867439 0.1 0.1 Observations 41 41 0.1 0.1 Hypothesized Mean Difference 0 0.1 0.1 df 70 0.1 0.1 t Stat -2.11400297 0.1 0.1 P(T<=t) one-tail 0.019039686 0.1 0.1 t Critical one-tail 1.994437112 0.1 0.1 P(T<=t) two-tail 0.038079372 0.1 0.1 t Critical two-tail 2.290638629 0.1 0.1 NOT SIGNIFICANT 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 1.74 0.1 0.1 0.1 0.1 0.1 0.1 2.68 3.89 0.1 2.9 0.1 1.9 1.58 2.74 1.9 3.33 0.1 0.1 0.1 0.1 0.24 1 0.5 2.9 3.82 2.65 0.1 1.64 0.1 1.98 0.1 0.1 0.1 2.04 0.1 1.28 Chromium Background MW-2 t-Test: Two-Sample Assuming Unequal Variances 1 1 120 25 Background MW-2 19 11 Mean 13.68390244 3.418780488 1 11 Variance 710.4658394 19.64088098 1 1 Observations 41 41 1 1 Hypothesized Mean Difference 0 16.9 1 df 42 1 1 t Stat 2.432556121 1 1 P(T<=t) one-tail 0.009666529 1 1 t Critical one-tail 2.018081703 1 1 P(T<=t) two-tail 0.019333057 10.4 1 t Critical two-tail 2.324620144 1 1 SIGNIFICANT 1 1 12 1 1 1 110 1 1 1 1 1 1 1 1 1 9.82 6.36 2.45 3.87 11.6 5.99 11.7 4.64 1.77 5.3 9.24 8.87 6.32 3.44 4.27 1.56 23.9 3.84 37.2 1.8 3.43 7.95 23.2 4.06 8.8 2.1 15 3.2 72.7 1 2.42 1 5.28 1.78 5.37 1 2.27 3.58 1 3.83 Selenium MW-1 MW-2 t-Test: Two-Sample Assuming Unequal Variances 1 1 1 1 MW-1 MW-2 1 1 Mean 1.225560976 3.918780488 1 1 Variance 1.176255902 46.53706098 1 1 Observations 41 41 1 1 Hypothesized Mean Difference 0 1 1 df 42 1 1 t Stat -2.49657074 1 1 P(T<=t) one-tail 0.008274366 1 1 t Critical one-tail 2.018081703 1 1 P(T<=t) two-tail 0.016548731 1 1 t Critical two-tail 2.324620144 1 1 SIGNIFICANT 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 21.6 1 1.83 1 9.4 1 17.3 1 27.1 1 15.4 1 23.7 1 1 1 1 3.45 1 2.01 1.58 1 1 1 3.3 0.21 1.8 1.1 1.4 1 1 1.07 1 1 1 0.968 1 7.44 7.26 1 1 Arsenic Background MW-3 t-Test: Two-Sample Assuming Unequal Variances 1 1 20 1 Background MW-3 1 1 Mean 2.139268293 2.577692 1 1 Variance 13.26631195 35.04789 1 1 Observations 41 39 1 1 Hypothesized Mean Difference 0 1 1 df 63 1 1 t Stat -0.396567801 1 1 P(T<=t) one-tail 0.346513161 1 1 t Critical one-tail 1.998340543 1 1 P(T<=t) two-tail 0.693026323 1 1 t Critical two-tail 2.296236772 1 1 NOT SIGNIFICANT 1 1 1 20.7 1 1 14.3 1 1 1 1 1 1 1.21 1 1 2.02 1 1 1 3.3 1 1 1 1 5.69 1 1 3.17 1 1 1 1 1 1 3.93 1 3.3 1 1 2.2 32.7 3.5 1 6.22 1 1 1 1 1 1 1 1 1 Chromium Background MW-3 t-Test: Two-Sample Assuming Unequal Variances 1 1 120 1 Background MW-3 19 1 Mean 13.68390244 9.402308 1 14.3 Variance 710.4658394 301.0658 1 14.9 Observations 41 39 1 1 Hypothesized Mean Difference 0 16.9 1 df 69 1 1 t Stat 0.855496854 1 1 P(T<=t) one-tail 0.19761856 1 1 t Critical one-tail 1.994945415 1 21.5 P(T<=t) two-tail 0.39523712 10.4 1 t Critical two-tail 2.291367352 1 1 NOT SIGNIFICANT 1 32.8 12 63.2 1 1 110 1 1 1 1 1 1 8.63 1 2.52 9.82 2.98 2.45 3.63 11.6 1 11.7 3.98 1.77 10.1 9.24 5.01 6.32 5.79 4.27 6.82 23.9 9.03 37.2 39.4 3.43 9.7 23.2 1.3 8.8 82.2 15 1 72.7 9.9 2.42 1 5.28 1 5.37 1 2.27 1 Cobalt Background MW-3 t-Test: Two-Sample Assuming Unequal Variances 0.1 0.1 0.1 0.1 Background MW-3 0.1 0.1 Mean 0.346829268 1.001282 0.1 0.1 Variance 0.590172195 7.475638 0.1 0.1 Observations 41 39 0.1 0.1 Hypothesized Mean Difference 0 0.1 0.1 df 44 0.1 0.1 t Stat -1.441660729 0.1 0.1 P(T<=t) one-tail 0.078239067 0.1 0.1 t Critical one-tail 2.015367574 0.1 0.1 P(T<=t) two-tail 0.156478133 0.1 0.1 t Critical two-tail 2.320710788 0.1 0.1 NOT SIGNIFICANT 0.1 0.1 0.1 10.4 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 3.06 0.1 1.89 2.68 0.1 0.1 1.26 0.1 1.15 1.58 0.1 1.9 0.1 0.1 2 0.1 0.43 0.24 13.8 0.5 0.1 3.82 2.06 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 Chromium Background MW-4 t-Test: Two-Sample Assuming Unequal Variances 1 1 120 1 Background MW-4 19 1 Mean 13.6839024 3.810513 1 1 Variance 710.465839 17.06978 1 1 Observations 41 39 1 1 Hypothesized Mean Difference 0 16.9 1 df 42 1 1 t Stat 2.342448 1 1 P(T<=t) one-tail 0.0119858 1 14 t Critical one-tail 2.0180817 1 10.9 P(T<=t) two-tail 0.02397159 10.4 1 t Critical two-tail 2.32462014 1 1 SIGNIFICANT 1 1 12 1 1 1 110 1 1 1 1 1 1 7.46 1 4.08 9.82 5.23 2.45 3.63 11.6 1 11.7 7.21 1.77 12.7 9.24 6.15 6.32 6.25 4.27 6.03 23.9 7.73 37.2 2.99 3.43 4.2 23.2 1.4 8.8 17.4 15 1 72.7 4.93 2.42 1 5.28 4.81 5.37 1.51 2.27 1 Cobalt Background MW-4 t-Test: Two-Sample Assuming Unequal Variances 0.1 0.1 0.1 0.1 Background MW-4 0.1 0.1 Mean 0.34682927 0.299231 0.1 0.1 Variance 0.5901722 0.299923 0.1 0.1 Observations 41 39 0.1 0.1 Hypothesized Mean Difference 0 0.1 0.1 df 72 0.1 0.1 t Stat 0.32029247 0.1 0.1 P(T<=t) one-tail 0.37483716 0.1 0.1 t Critical one-tail 1.99346357 0.1 0.1 P(T<=t) two-tail 0.74967432 0.1 0.1 t Critical two-tail 2.28924314 0.1 0.1 NOT SIGNIFICANT 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 1.81 0.1 1.6 2.68 0.1 0.1 0.1 0.1 1.74 1.58 0.1 1.9 0.1 0.1 0.77 0.1 0.2 0.24 2.25 0.5 0.1 3.82 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 Arsenic Background MW-5 t-Test: Two-Sample Assuming Unequal Variances 1 1 20 1 Background MW-5 1 1 Mean 2.139268293 5.068421 1 1 Variance 13.26631195 69.64725 1 10.7 Observations 41 38 1 1 Hypothesized Mean Difference 0 1 1 df 50 1 1 t Stat -1.99470312 1 1 P(T<=t) one-tail 0.025770445 1 1 t Critical one-tail 2.008559112 1 1 P(T<=t) two-tail 0.05154089 1 1 t Critical two-tail 2.310913936 1 1 NOT SIGNIFICANT 1 1 1 1 1 1 14.3 1 1 1 1 1 1 4.44 1 1 2.02 1 1 11.8 3.3 1 1 1 1 4.01 1 23.2 3.17 1 12.1 1 1 1 1 1 26 1 1.4 2.2 6.65 3.5 14.8 6.22 37.7 1 1 1 1 1 13.8 1 1 Cobalt Background MW-5 t-Test: Two-Sample Assuming Unequal Variances 0.1 41 0.1 16.2 Background MW-5 0.1 12.3 Mean 0.346829268 3.170256 0.1 0.1 Variance 0.590172195 66.80414 0.1 27.2 Observations 41 39 0.1 0.1 Hypothesized Mean Difference 0 0.1 0.1 df 39 0.1 0.1 t Stat -2.148275853 0.1 0.1 P(T<=t) one-tail 0.018980346 0.1 0.1 t Critical one-tail 2.02269092 0.1 0.1 P(T<=t) two-tail 0.037960692 0.1 0.1 t Critical two-tail 2.331264265 0.1 0.1 NOT SIGNIFICANT 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 2.58 0.1 0.1 0.1 0.1 0.1 0.1 0.1 4.96 0.1 3.42 2.68 6.04 0.1 0.1 0.1 1.37 1.58 0.1 1.9 0.1 0.1 2.6 0.1 0.57 0.24 2.7 0.5 0.1 3.82 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 Arsenic Background MW-6 t-Test: Two-Sample Assuming Unequal Variances 1 58 20 10.2 Background MW-6 1 1 Mean 2.13926829 5.602821 1 1 Variance 13.266312 111.7596 1 1 Observations 41 39 1 1 Hypothesized Mean Difference 0 1 1 df 47 1 1 t Stat -1.93946031 1 1 P(T<=t) one-tail 0.02923039 1 1 t Critical one-tail 2.01174051 1 17.2 P(T<=t) two-tail 0.05846077 1 1 t Critical two-tail 2.31548997 1 17.7 NOT SIGNIFICANT 1 12.4 1 1 1 1 14.3 1 1 1 1 1 1 3.41 1 3.6 2.02 1 1 4.66 3.3 1 1 1 1 5.44 1 1 3.17 1 1 1 1 14.8 1 12.9 1 2.4 1 3.7 2.2 27.1 3.5 1 6.22 1 1 1 1 1 1 1 1 1 Chromium Background MW-6 t-Test: Two-Sample Assuming Unequal Variances 1 40 120 1 Background MW-6 19 1 Mean 13.6839024 7.359231 1 1 Variance 710.465839 129.19 1 1 Observations 41 39 1 1 Hypothesized Mean Difference 0 16.9 1 df 55 1 1 t Stat 1.39210704 1 1 P(T<=t) one-tail 0.08474686 1 1 t Critical one-tail 2.00404478 1 19.3 P(T<=t) two-tail 0.16949371 10.4 1 t Critical two-tail 2.30442596 1 15.7 NOT SIGNIFICANT 1 16.2 12 12.8 1 1 110 1 1 1 1 1 1 9.62 1 6.71 9.82 5.87 2.45 10.8 11.6 2.12 11.7 6.38 1.77 3.32 9.24 2.08 6.32 1.75 4.27 2.52 23.9 30.6 37.2 21.5 3.43 1.4 23.2 2.7 8.8 50.7 15 2.78 72.7 1.54 2.42 2.48 5.28 2.48 5.37 1.66 2.27 1 Cobalt Background MW-6 t-Test: Two-Sample Assuming Unequal Variances 0.1 35 0.1 0.1 Background MW-6 0.1 0.1 Mean 0.34682927 4.295641 0.1 0.1 Variance 0.5901722 77.1879 0.1 17.8 Observations 41 39 0.1 0.1 Hypothesized Mean Difference 0 0.1 0.1 df 39 0.1 0.1 t Stat -2.7967299 0.1 0.1 P(T<=t) one-tail 0.00398721 0.1 0.1 t Critical one-tail 2.02269092 0.1 15.3 P(T<=t) two-tail 0.00797442 0.1 0.1 t Critical two-tail 2.33126426 0.1 10.4 SIGNIFICANT 0.1 12.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 1.07 0.1 0.1 0.1 4.11 0.1 0.1 0.1 3.41 0.1 2.49 2.68 0.1 0.1 0.1 0.1 1.27 1.58 11.8 1.9 9.2 0.1 0.47 0.1 1 0.24 36.8 0.5 0.1 3.82 1.1 0.1 2.01 0.1 0.1 0.1 0.1 0.1 0.1 Arsenic Background MW-7 t-Test: Two-Sample Assuming Unequal Variances 1 10 20 85.9 Background MW-7 1 10.6 Mean 2.139268293 8.862069 1 1 Variance 13.26631195 374.9865 1 68 Observations 41 29 1 1 Hypothesized Mean Difference 0 1 1 df 29 1 1 t Stat -1.846607099 1 1 P(T<=t) one-tail 0.037516301 1 5.43 t Critical one-tail 2.045229642 1 8.28 P(T<=t) two-tail 0.075032603 1 1 t Critical two-tail 2.363846073 1 1 NOT SIGNIFICANT 1 1 1 1 1 3.86 14.3 1 1 2.95 1 1 1 6.33 1 1 2.02 9 1 2.6 3.3 12.9 1 1 1 7.48 1 8.67 3.17 1 1 1 1 1 1 1 2.2 3.5 6.22 1 1 1 1 1 Chromium Background MW-7 t-Test: Two-Sample Assuming Unequal Variances 1 28.4 120 123 Background MW-7 19 12.1 Mean 13.68390244 12.13345 1 1 Variance 710.4658394 759.7885 1 93.4 Observations 41 29 1 1 Hypothesized Mean Difference 0 16.9 1 df 59 1 1 t Stat 0.235003531 1 1 P(T<=t) one-tail 0.407509859 1 7.41 t Critical one-tail 2.000995378 1 8.34 P(T<=t) two-tail 0.815019718 10.4 4.11 t Critical two-tail 2.300046899 1 5.54 NOT SIGNIFICANT 1 1 12 4.9 1 2.25 110 1.31 1 1.94 1 2.93 1 16.6 1 2.99 9.82 3.5 2.45 0.82 11.6 11.8 11.7 1 1.77 8.07 9.24 3.46 6.32 1 4.27 1 23.9 37.2 3.43 23.2 8.8 15 72.7 2.42 5.28 5.37 2.27 1 Cobalt Background MW-7 t-Test: Two-Sample Assuming Unequal Variances 0.1 12.3 0.1 85.2 Background MW-7 0.1 0.1 Mean 0.346829268 7.794138 0.1 0.1 Variance 0.590172195 426.7155 0.1 78 Observations 41 29 0.1 0.1 Hypothesized Mean Difference 0 0.1 0.1 df 28 0.1 0.1 t Stat -1.940514287 0.1 0.1 P(T<=t) one-tail 0.031223629 0.1 0.1 t Critical one-tail 2.048407142 0.1 2.13 P(T<=t) two-tail 0.062447257 0.1 0.1 t Critical two-tail 2.368451749 0.1 0.1 NOT SIGNIFICANT 0.1 0.1 0.1 4.65 0.1 3.59 0.1 1.71 0.1 2.41 0.1 4.46 0.1 6.46 0.1 0.1 0.1 2.9 0.1 0.95 0.1 7.24 0.1 0.1 0.1 4.21 2.68 3.21 0.1 1.84 0.1 3.57 1.58 1.9 0.1 0.1 0.24 0.5 3.82 0.1 0.1 0.1 0.1 0.1 Arsenic Background MW-8 t-Test: Two-Sample Assuming Unequal Variances 1 153 20 26.3 Background MW-8 1 1 Mean 2.13926829 12.9115 1 31.9 Variance 13.266312 1163.165 1 1 Observations 41 20 1 1 Hypothesized Mean Difference 0 1 4.56 df 19 1 1 t Stat -1.40862452 1 3.85 P(T<=t) one-tail 0.08755049 1 1 t Critical one-tail 2.09302405 1 1 P(T<=t) two-tail 0.17510099 1 1 t Critical two-tail 2.43344021 1 4.2 NOT SIGNIFICANT 1 1.3 1 1 1 1 14.3 1 1 1 1 12.7 1 9.42 1 2.02 1 3.3 1 1 1 3.17 1 1 1 1 1 2.2 3.5 6.22 1 1 1 1 1 Chromium Background MW-8 t-Test: Two-Sample Assuming Unequal Variances 1 69.9 120 23.1 Background MW-8 19 1 Mean 13.6839024 6.3885 1 10.7 Variance 710.465839 251.08 1 1 Observations 41 20 1 4.99 Hypothesized Mean Difference 0 16.9 1.73 df 57 1 1 t Stat 1.3345697 1 1 P(T<=t) one-tail 0.09366201 1 1 t Critical one-tail 2.00246546 1 1 P(T<=t) two-tail 0.18732402 10.4 1 t Critical two-tail 2.30215764 1 0.9 NOT SIGNIFICANT 1 0.4 12 1 1 1 110 1 1 1 1 2.36 1 2.69 1 9.82 2.45 11.6 11.7 1.77 9.24 6.32 4.27 23.9 37.2 3.43 23.2 8.8 15 72.7 2.42 5.28 5.37 2.27 1 Cobalt Background MW-8 t-Test: Two-Sample Assuming Unequal Variances 0.1 101 0.1 14.2 Background MW-8 0.1 0.1 Mean 0.34682927 7.5795 0.1 18.3 Variance 0.5901722 507.1088 0.1 0.1 Observations 41 20 0.1 3.11 Hypothesized Mean Difference 0 0.1 2.81 df 19 0.1 0.1 t Stat -1.4359519 0.1 1.12 P(T<=t) one-tail 0.08363831 0.1 0.1 t Critical one-tail 2.09302405 0.1 0.1 P(T<=t) two-tail 0.16727661 0.1 0.1 t Critical two-tail 2.43344021 0.1 0.22 NOT SIGNIFICANT 0.1 0.07 0.1 2.45 0.1 0.1 0.1 1.15 0.1 0.1 0.1 3.24 0.1 3.12 0.1 0.1 0.1 0.1 0.1 0.1 2.68 0.1 0.1 1.58 1.9 0.1 0.1 0.24 0.5 3.82 0.1 0.1 0.1 0.1 0.1 Selenium Background MW-8 t-Test: Two-Sample Assuming Unequal Variances 1 27.8 1 1 Background MW-8 1 1 Mean 1.22556098 4.8935 1 14.3 Variance 1.1762559 52.71049 1 1 Observations 41 20 1 4.21 Hypothesized Mean Difference 0 1 1 df 19 1 1 t Stat -2.24717861 1 3.42 P(T<=t) one-tail 0.01835161 1 1 t Critical one-tail 2.09302405 1 2.1 P(T<=t) two-tail 0.03670322 1 6 t Critical two-tail 2.43344021 1 18 NOT SIGNIFICANT 1 1.2 1 1 1 1 1 1 1 1 1 9.84 1 1 1 1 1 1 1 1 1 1 1 3.45 2.01 1 1 0.21 1.1 1 1.07 1 0.968 7.44 1 c d m s m i t h . c o m