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Home My WebLink About4103_GreensboroMSWLF_GWMR_DIN27847_20160926White Street Landfill – Phase II Permit No. 41-03 Assessment Monitoring September 2016 Greensboro, North Carolina S&ME Project No. 1584-98-081C Prepared for: The City of Greensboro Prepared by: S&ME, Inc. 8646 W Market St, Suite 105 Greensboro, NC 27409 January 11, 2017 White Street Landfill - Phase II (Permit # 41-03) Water Quality Monitoring Report Greensboro, North Carolina S&ME Project No. 1584-98-081C January 11, 2017 ii Table of Contents 1.0 Executive Summary...............................................................................................1 GROUNDWATER QUALITY......................................................................................................................1 Volatile and Semi-Volatile Organic Compounds:.............................................................................1 Inorganic Constituents (Metals):.........................................................................................................1 SURFACE WATER QUALITY.....................................................................................................................2 ADDITIONAL ASSESSMENT ACTIVITIES..............................................................................................2 2.0 Introduction............................................................................................................3 3.0 Scope Of Work.......................................................................................................3 4.0 Methods Employed...............................................................................................3 4.1 Monitoring Well Sampling..............................................................................................3 4.2 Statistical Analysis of Data..............................................................................................4 4.2.1 Software...............................................................................................................................4 4.2.2 Statistical Methods-Groundwater Analyses.......................................................................5 4.3 Stream Sampling...............................................................................................................6 5.0 Results......................................................................................................................6 5.1 Groundwater Analytical Results....................................................................................6 5.1.1 Phase II Appendix II Assessment Monitoring....................................................................6 Volatile Organic Compounds:.............................................................................................................6 Inorganic Constituents (Metals):.........................................................................................................7 Pesticides/Herbicides:...........................................................................................................................7 Other Targeted Appendix II Parameters:...........................................................................................7 5.2 Statistical Results..............................................................................................................8 5.2.1 Historical.............................................................................................................................8 5.2.1.1 Descriptive Statistics........................................................................................................8 5.2.1.2 Time vs. Concentration Graphs......................................................................................8 5.2.1.3 Non-Parametric Tolerance Limit Tests........................................................................10 5.3 Hydraulic Conductivity.................................................................................................11 5.4 Groundwater Flow Direction and Rate.......................................................................11 5.5 Surface Water..................................................................................................................12 White Street Landfill - Phase II (Permit # 41-03) Water Quality Monitoring Report Greensboro, North Carolina S&ME Project No. 1584-98-081C January 11, 2017 iii 5.6 Quality Assurance..........................................................................................................12 6.0 CAP Monitoring Activities................................................................................13 Additional Groundwater Quality Monitoring ........................................................................................13 Sentinel Monitoring Wells and NES Well II-9.................................................................................13 MNA Monitoring ................................................................................................................................13 Assessment Well II-3B ........................................................................................................................14 7.0 References.............................................................................................................14 8.0 Certification..........................................................................................................15 Appendices Tables Figures Appendix I – Groundwater Sampling Field Data Sheets Appendix II – Laboratory Analytical Reports Appendix III – Time vs Concentration Charts Appendix IV – CAP Monitoring Laboratory Analytical Reports and Summary Tables White Street Landfill - Phase II (Permit # 41-03) Water Quality Monitoring Report Greensboro, North Carolina S&ME Project No. 1584-98-081C January 11, 2017 1 1.0 Executive Summary Between September 26 and September 28, 2016, thirteen monitoring wells and five stream locations which monitor the Phase II portion of the White Street Landfill were sampled as part of the routine semi- annual monitoring program. Monitoring wells II-1, II-2, II-3, II-4A, II-5, II-6, II-7, II-7B, II-8, II-12, MW-13 and MW-14 comprise the groundwater monitoring system for the Phase II solid waste disposal area of the landfill. Monitoring well MW-13 serves as a background well for both the Phase I and the Phase II areas. Monitor well MW-14 serves as a background well for Phase II. All sampling was conducted according to North Carolina Solid Waste Management Guidelines. Samples were analyzed by a North Carolina certified laboratory. Samples collected from the Phase II area were submitted for analysis using the North Carolina Appendix II assessment monitoring list. Samples from surface water locations SW-1, SW-2, SW-3, SW-4, and SW-5 were analyzed for the federal Appendix I constituents. GROUNDWATER QUALITY During the September 2016 compliance monitoring event, it appears that the following NCAC 2L groundwater quality standards (2L Standards) were exceeded. Volatile and Semi-Volatile Organic Compounds: ♦Benzene was detected at concentrations of 1.5 µg/L and 2.1 µg/L in compliance wells II-3 and II-6, respectively. The 2L Standard for benzene is 1 µg/L. ♦1,4-Dichlorobenzene was detected at a concentration of 8.6 µg/L in compliance well II-1. The 2L Standard for 1,4-Dichlorobenzene is 6 µg/L. ♦1,1-Dichloroethane was detected at concentrations of 8.6 µg/L and 12 µg/L in compliance wells II- 2 and II-3, respectively. The 2L Standard for 1,1-Dicloroethane is 6 µg/L. ♦Vinyl chloride was detected at concentrations of 3.1 µg/L and 1.4 µg/L at compliance wells II-2 and II-9. Vinyl chloride was also detected in sentinel monitoring well SMW-3 at a concentration of 1.5 µg/L. The 2L Standard for Vinyl Chloride is 0.03 µg/L. ♦Bis (2-ethylhexyl) phthalate was detected in compliance monitoring wells II-4A and II-7 at estimated concentrations of 5.0 µg/L and 3.3 µg/L, exceeding the 2L Standard of 3.0 µg/L. Based on the historic database, this was the first detection of this compound at well II-4A and the second detection at well II-7. Resampling for verification testing of this compound at these wells is recommended for these apparent exceedances of the corresponding 2L Standard. Inorganic Constituents (Metals): Groundwater analytical results indicate inorganic constituents cobalt and vanadium were detected with concentrations greater than the Interim Maximum Allowable Concentration (IMAC). S&ME previously prepared an Alternate Source Demonstration (ASD) for metals at the Facility. The ASD demonstrated that cobalt and vanadium were naturally occurring in the in-situ soil at the Facility and at sufficient concentrations within the soil to influence groundwater quality. Based on the results of the ASD, the detection of cobalt and vanadium at concentrations above the IMAC values or 2L Standards was not likely due to a release by the Facility, but instead may be attributed to the natural occurrence of these metals in the native, residual soil. This finding is also supported by time vs concentration plots for these groundwater constituents, which generally depict relatively stable concentrations over time. White Street Landfill - Phase II (Permit # 41-03) Water Quality Monitoring Report Greensboro, North Carolina S&ME Project No. 1584-98-081C January 11, 2017 2 No other Appendix II constituents were detected at concentrations greater than the published 2L Standard or IMAC during this monitoring event. The presence of estimated concentrations of o-Toluidine at compliance monitoring wells II-1 and II-6 will be verified during the next semi-annual monitoring event. SURFACE WATER QUALITY Three volatile organic compounds and several inorganic constituents were reported in one or more of the samples collected. Based on the sampled locations and the reported concentrations, the compounds detected in the surface water samples likely stem from up-stream and off-site sources. ADDITIONAL ASSESSMENT ACTIVITIES During 2010, monitoring well II-3B was installed to assess groundwater quality conditions down-gradient of well II-3; however, at a point prior to reaching the compliance boundary. For the groundwater sample collected at well II-3B during September 2016, the analytical results report no volatile organic compounds were detected at concentrations that exceed the corresponding 2L Standards. This is the 11 th monitoring event to indicate that the portion of the landfill monitored by well II-3B is currently in compliance with applicable groundwater quality standards. The detection of concentrations greater than the 2L Standards at well II-3 reflects the close proximity of this well to the limits of waste. It is our opinion that the analytical data for well II-3 is informative; however, the proximity of well II-3B to the compliance boundary makes it is a better indicator of groundwater compliance in accordance with the permit. A Corrective Action Plan (CAP) was prepared by S&ME and approved by the North Carolina Department of Environmental Quality (NCDEQ) for Phase II of the White Street Landfill. The CAP specifies phytoremediation coupled with Monitored Natural Attenuation (MNA) to restore groundwater quality. CAP related groundwater monitoring activities completed contemporaneously with the September 2016 water quality monitoring event included: ♦Collection and analysis of groundwater samples from each of the three CAP specified sentinel monitoring wells, SMW-1, SMW-3, and SMW-4. The September 2016 analytical results for volatile organic compounds indicated that groundwater quality at sentinel wells SMW-1 and SMW-4 met the CAP specified cleanup goals, the 2L Standards. At sentinel well SMW-3 the estimated concentration for vinyl chloride was greater than the CAP specified cleanup goal. ♦Monitoring wells II-7, II-7B, and II-1 function as both routine compliance monitoring wells and CAP sentinel monitoring wells. The September 2016, groundwater analytical results for monitoring wells II-7 and II-7B indicated that volatile organic compound concentrations at these points met the CAP specified cleanup goals, the 2L Standards. Only monitoring well II-1 exhibited groundwater quality which does not meet the CAP specified cleanup goals, the 2L Standards. ♦Groundwater samples were obtained from a select group of monitoring wells utilized to evaluate the MNA component of the CAP. The collected samples were analyzed in the field and/or in the laboratory for MNA indicator parameters. These CAP related items are briefly discussed in this report; however, these CAP monitoring activities and associated findings will be discussed in greater detail in the Corrective Action Evaluation Report (CAER) to be prepared during 2017. White Street Landfill - Phase II (Permit # 41-03) Water Quality Monitoring Report Greensboro, North Carolina S&ME Project No. 1584-98-081C January 11, 2017 3 2.0 Introduction White Street Landfill is a Solid Waste Management Facility (SWMF) located at the north end of White Street in northeastern Greensboro. S&ME, Inc. (S&ME) was contracted by the City of Greensboro to complete this Phase II Appendix II assessment/detection monitoring event. Phase II of the landfill is a closed Municipal Solid Waste (MSW) landfill with an active Construction & Demolition (C&D) landfill piggy backed on top, covered by Solid Waste Permit #41-03. Nine (9) down-gradient monitoring wells located along the perimeter of the Phase II disposal area, one bedrock monitor well (II-7B), two NES wells (II-3B and II-9), and one background monitoring well (MW-13) located approximately 4,300 feet southwest of the Phase II area were sampled. Up-gradient monitor well (MW-14) was not sampled since it was found to be dry. Five surface water samples were collected from North Buffalo Creek and one of its tributaries in the vicinity of the Facility. In addition to the routine semi-annual assessment monitoring program activities, groundwater samples were collected and analyzed from the Corrective Action Plan sentinel monitoring wells SMW-1, SMW-3, and SMW-4, and Nature and Extent Study (NES) monitoring well II-3B and II-9. This report discusses the field procedures, field measurements, analytical results, and presents the statistical evaluation results for the September 2016 water quality monitoring event. 3.0 Scope Of Work To complete the scope of work, S&ME completed the following tasks: ♦Sampled 12 compliance network monitoring wells and five surface water locations. ♦Sampled sentinel monitoring wells SMW-1, SMW-3, and SMW-4 and NES wells II-3B and II-9. ♦Obtained field values for pH, temperature, dissolved oxygen (DO), turbidity, oxidation-reduction potential (ORP), and conductivity at each groundwater sample location. ♦Collected depth to water measurements during well purging to monitor drawdown. ♦Had groundwater samples analyzed for the North Carolina Solid Waste Appendix II constituents by a North Carolina certified laboratory, using State approved methods. ♦Had the surface water samples analyzed for the North Carolina Solid Waste Appendix I constituents by a North Carolina certified laboratory, using State approved methods. ♦Had the sentinel monitoring wells and NES well samples analyzed for Appendix II constituents by a North Carolina certified laboratory using State approved methods. ♦Prepare a groundwater contour map and calculated groundwater flow rates. ♦Prepared and submitted reports to the City of Greensboro and the NCDEQ. 4.0 Methods Employed 4.1 Monitoring Well Sampling The groundwater monitoring well sampling took place between September 26 and September 28, 2016. The monitoring well locations are shown on Figure 1. A representative from S&ME opened each well and measured the static water level from the top edge of the PVC casing in wells. An electronic water level White Street Landfill - Phase II (Permit # 41-03) Water Quality Monitoring Report Greensboro, North Carolina S&ME Project No. 1584-98-081C January 11, 2017 4 indicator was used to obtain depth to water measurements. These data are summarized in Table 1. With dedicated MicroPurge™pumps previously installed in each well, the total well depth sounding data reported for the sampling events completed during September 1997 and May 1998 were used to determine the volume of water in the monitoring wells. In accordance with the facility's approved Water Quality Monitoring Plan, wells II-1, II-2, II-3, II-4A, II-5, II- 6, II-7, II-8, II-12, and MW-13 were purged using the dedicated Micro Purge™pumps. Up-gradient well MW-14 was not sampled as it was found to be dry. Sentinel monitoring wells SMW-1, SMW-3, and SMW- 4 and NES wells II-9, II-3B, and II-7B were also sampled using dedicated Micro Purge™pumps. At each well, the purge rate and the drawdown of the water table were monitored as an indicator of how much stress the purging placed on the aquifer. The purge rates were calculated by recording the time required to fill a graduated cylinder. The purging flow rate was approximately 100 milliliters/minute (ml/min.). During purging, the depth to water was periodically monitored and recorded on the groundwater sampling field data sheets. For this sampling event, the measured drawdown in the wells was generally less than 1 foot. The purge water from the monitoring wells was monitored in the field for pH, temperature, DO, ORP, and conductivity using a flow-through cell and multi-meter. Typically, a sample was collected when three consecutive readings for each individual field parameter fluctuated by no more than 10 percent, between each equipment volume. The target stabilization goal of less than 10% change was generally reached prior to collection of the groundwater samples. Turbidity was measured separately, with field measurements less than or equal to 10 NTUs, as a target criteria. Even with the use of low flow sampling methods, turbidity values at some wells remained higher than the target criteria during purging. Accordingly, some samples were collected based upon professional judgment without meeting the turbidity goal. The field data collected during sampling was recorded on the groundwater sampling field data sheets, which are included in Appendix I. Groundwater samples were collected from the dedicated Teflon tubing at each of the wells with dedicated well sampling pumps. Immediately upon collection, each sample was placed in laboratory supplied containers, placed in a cooler with ice, and placed under chain-of custody. The sampling technician wore nitrile gloves that were changed between wells to minimize the possibility of cross contamination. During the September 2106 event Phase II groundwater samples (II-1, II-2, II-3, II-4A, II-5, II-6, II-7, II-7B, II-8, II-12, and MW-13) were analyzed for Appendix II constituents. Sentinel monitoring wells SMW-1, SMW-3, SMW-4 and NES wells II-3B and II-9 were also analyzed for the Appendix II constituents. Analyses were conducted by Environmental Conservation Laboratories, a North Carolina certified laboratory. Laboratory Analytical Reports are attached in Appendix II. 4.2 Statistical Analysis of Data 4.2.1 Software All data were analyzed using ChemStat 6.2 software package. An Excel file was used to input and create the Data files based on the recent and historic laboratory data. The Excel file was then converted to .txt tab delimited file for use by the ChemStat software. The following procedures were used to carry out the statistical analyses of the compliance data for each constituent. White Street Landfill - Phase II (Permit # 41-03) Water Quality Monitoring Report Greensboro, North Carolina S&ME Project No. 1584-98-081C January 11, 2017 5 4.2.2 Statistical Methods-Groundwater Analyses In accordance with the NCDEQ-Solid Waste Management Rules 15A NCAC 13B, Section 1632, historical up-gradient and cross-gradient groundwater monitoring data collected from the background groundwater monitoring wells that comprise the Subtitle D monitoring well system were pooled and the analytical results were used to create a statistical baseline for statistically significant increases in constituent concentrations. In accordance with the DEHNR-Solid Waste Management Rules 15A NCAC 13B, Sections 1632 (dated 1/7/97), several rounds of samples were collected from groundwater monitoring wells that comprise the Subtitle D monitoring well system and the analytical results were used to create a statistical baseline for statistically significant increases in constituent concentrations. This sampling round (October 2016) will be incorporated into the baseline for the next round of sampling. The following procedure is used to analyze each new data set: ♦A descriptive statistics program is run to provide the following information: ♦mean ♦standard deviation ♦variance ♦percentage non-detects ♦Time versus concentration graphs were prepared for each parameter detected at quantified values and used to evaluate data trends and to identify potential data outliers. ♦Normality/Data Distribution Tests were run and used to determine the statistical distribution of the database for each quantified parameter. The data distribution test results were utilized to determine if a data set exhibits a normal, log-normal or non-normal distribution. Due to the large number of non-detects for many of the wells and the lack of normality in the data sets, non- parametric statistical methods were deemed appropriate for the evaluation of the current compliance data set. ♦A statistical Upper limit was calculated for each of the detected parameter data sets utilizing Non- Parametric Tolerance Limits. Then the compliance data were compared via Inter-Well comparisons to the statistical Upper limit to determine if an SSI had occurred. ♦Data showing statistically significant increases across the site are examined to determine the validity of results. Due to chronic groundwater turbidity issues, monitoring well II-4 was replaced with compliance well II-4A during 2013. Given that these wells are adjacent to each other and since they essentially monitor the same portion of the surficial aquifer, the historic analytical data set for monitoring well II-4 was merged with the data for monitoring well II-4A for the statistical tests discussed and presented herein. White Street Landfill - Phase II (Permit # 41-03) Water Quality Monitoring Report Greensboro, North Carolina S&ME Project No. 1584-98-081C January 11, 2017 6 4.3 Stream Sampling Surface water sampling took place on September 26, 2016. Four stream samples (SW-1, SW-3, SW-4, and SW-5) were collected from North Buffalo Creek, which flows along the northwestern side of the White Street Landfill. One surface water sample (SW-2) was collected from a tributary of North Buffalo Creek. The locations of the stream samples are shown in Figure 2. SW-1 was collected upstream from the landfill near the US Highway 29 Bridge. SW-2 was collected from a southern tributary of North Buffalo Creek just before it joins the main creek west of the landfill entrance. SW-3 was collected downstream of the North Buffalo Wastewater Treatment Plant outfall and upstream of the landfill. SW-4 was collected downstream of the landfill at a USGS gauging station located on North Buffalo Creek about three-quarters of a mile north of the landfill. SW-5 was collected from North Buffalo Creek immediately downstream of the Phase II landfill disposal area. The surface water samples were collected by immersing laboratory supplied containers in the water to be sampled. After collection, the surface water samples were packed on ice and placed under chain-of- custody. Stream samples SW-1, SW-2, SW-3, SW-4 and SW-5 were analyzed for Appendix I constituents. 5.0 Results 5.1 Groundwater Analytical Results 5.1.1 Phase II Appendix II Assessment Monitoring Wells II-1, II-2, II-3, II-4A, II-5, II-6, II-7, II-7B, II-8, II-12, MW-13 and MW-14 comprise the monitoring system for the Phase II area.Table 3 provides a summary of the Appendix II constituents detected in the Phase II area groundwater monitoring wells during this event.Table 4 provides a summary of the constituents and concentrations that exceed corresponding NCAC 2L groundwater quality standards (2L Standards) or corresponding Interim Maximum Allowable Concentrations (IMAC). For reference,Table 3 and Table 4 also provide the Federal Maximum Contaminant Level (MCL).Appendix II contains the laboratory analytical reports of the September 2016 sampling event. Volatile Organic Compounds: As summarized in Table 3, groundwater analytical results indicate thirteen volatile organic compounds were detected during the September 2016 sampling event, at one or more monitoring well locations. Of the detected volatile organic compounds, the following 15A NCAC 2L groundwater quality standards (2L Standards) were exceeded (see Table 4). ♦Benzene was detected at concentrations of 1.5 µg/L and 2.1 µg/L in compliance wells II-3 and II-6, respectively. The 2L Standard for benzene is 1 µg/L. ♦1,4-Dichlorobenzene was detected at a concentration of 8.6 µg/L in compliance well II-1. The 2L Standard for 1,4-Dichlorobenzene is 6 µg/L. ♦1,1-Dichloroethane was detected at concentrations of 8.6 µg/L and 12 µg/L in compliance wells II- 2 and II-3, respectively. The 2L Standard for 1,1-Dicloroethane is 6 µg/L. White Street Landfill - Phase II (Permit # 41-03) Water Quality Monitoring Report Greensboro, North Carolina S&ME Project No. 1584-98-081C January 11, 2017 7 ♦Vinyl chloride was detected at concentrations of 3.1 µg/L and 1.4 µg/L at compliance wells II-2 and II-9. Vinyl chloride was also detected in sentinel monitoring well SMW-3 at a concentration of 1.5 µg/L. The 2L Standard for Vinyl Chloride is 0.03 µg/L. Semi-Volatile Organic Compounds: As summarized in Table 3, groundwater analytical indicate two semi-volatile organic compounds were detected during the September 2016 sampling event. ♦o-Toluidine was detected at compliance monitoring wells II-1 and II-6 with estimated concentrations. Currently, there is no published 2L Standard or IMAC for this compound. ♦Bis (2-ethylhexyl) phthalate was detected at compliance monitoring wells II-2, II-4A, II-5, II-7, and II-8. The estimated concentrations of 5.0 µg/L and 3.3 µg/L detected in compliance monitoring wells II-4A and II-7, respectively, were greater than the 2L Standard of 3.0 µg/L but less than the Federal MCL of 6.0 µg/L. This compound is a commonly known field contaminant. Inorganic Constituents (Metals): As summarized in Table 3, analytical results for samples collected from Phase II groundwater monitoring wells report detections of antimony, arsenic, barium, cadmium, cobalt, copper, lead, mercury, nickel, vanadium, and zinc at one or more monitoring well locations during the September 2016 sampling event. Each of the reported concentrations of these inorganic constituents was below their corresponding NCAC 2L groundwater standard or Interim Maximum Concentrations (IMAC) value with the exception of cobalt and vanadium. Cobalt and vanadium were detected in the groundwater samples collected from one or more wells during this monitoring event. Many of these detections were either “J” flag estimated concentrations or quantified concentrations exceed the corresponding IMACs. Between 2006 and 2007 S&ME prepared an Alternate Source Demonstration (ASD) for metals at the Facility. The ASD demonstrated that cobalt and vanadium were naturally occurring in the in-situ soil at the Facility and at sufficient concentrations within the soil to influence groundwater quality. The reported concentrations of cobalt and vanadium during the September 2016 sampling event are below the predicted groundwater concentrations calculated for using a default dilution attenuation factor (DAF). As a result, the detection of cobalt and vanadium above their respective IMAC values or 2L Standard may be attributed to the natural occurrence of these metals in the native residual soil at the facility. Pesticides/Herbicides: No Appendix II organochlorine pesticides were detected above the method detection limits or the solid waste section limits during this monitoring event. No Appendix II chlorinated herbicides were detected above the method detection limits or the solid waste section limits during this monitoring event. Other Targeted Appendix II Parameters: For the groundwater samples collected, no target polychlorinated biphenols (PCBs), sulfate, and cyanide were detected above the method detection limits or the solid waste section limits during this monitoring event. White Street Landfill - Phase II (Permit # 41-03) Water Quality Monitoring Report Greensboro, North Carolina S&ME Project No. 1584-98-081C January 11, 2017 8 5.2 Statistical Results 5.2.1 Historical The monitoring well network for Phase II of the White Street Landfill was upgraded in the winter of 1995 with the addition of four new monitoring wells (II-6, II-7, II-8 and MW-14). Monitoring well II-7B was installed in December 2000, while monitoring wells II-9, II-10, II-11 and II-12 were added in March 2005, as part of a nature and extent study. Monitoring well II-12 replaced compliance well I-5. NES wells II-3B, II-9, II-10, and II-11 and Sentinel Wells SMW-1, SMW-3, and SMW-4 are not part of the compliance well network; therefore, they are not included in the compliance required statistical tests discussed herein. 5.2.1.1 Descriptive Statistics The statistics program calculates the pooled mean, background mean, pooled standard deviation, background standard deviation, rank sum, rank mean and variance for each constituent detected. 5.2.1.2 Time vs. Concentration Graphs This graph displays a plot of the concentration of one parameter for a single well over time. The concentration is plotted along the vertical axis and the sample dates are plotted along the horizontal axis. These graphs are used to visually examine changes in concentration over time for a parameter at a given well. Time series plots for select constituents detected during this monitoring event are contained in Appendix III. An evaluation of the time vs. concentration plots suggests: Appendix II - Volatile Organic Compounds ♦The time series plots for concentrations of 1,1-dichloroethane suggest a trend of increasing concentrations at monitoring well II-3, which generally plateaued after 2007. The data set for monitoring wells II-1, II-3B, and II-9 suggest relatively stable concentrations over time, whereas the data for monitoring wells II-4 and II-7B suggest trends of declining concentrations over time. ♦The time series plots for the concentrations of 1,2-dichlorobenzene in monitoring wells II-1 and II- 6 depicted periodic detections of estimated concentrations. ♦The time series plots for the concentrations of 1,4-dichlorobenzene depict rising concentrations at monitoring well II-1, whereas the concentrations at monitoring wells II-2, II-4A, and II-6 depict fluctuating concentrations with no definitive long-term trends recognized. ♦The time series plots for the concentrations of benzene in monitoring wells II-3, II-4A, and II-6 show minor fluctuations in reported concentrations following the change to the lower SWSL. With concentration changes of less or equal to 1 µg/L considered insignificant, the reported concentrations were considered stable. ♦The time series plots for the concentrations of chlorobenzene in wells II-1, II-4A, II-6, II-8, and II-9 suggests that the detections of this constituent appear to coincide with the promulgation of the revised SWSL. Following the revised SWSL this compound has been periodically detected with no clear concentration trends over time. ♦The time series plot for the concentrations of chloroethane in well II-4A evidence four periodic detections in the monitored history. ♦The time series plot of the concentrations of cis-1,2-dichloroethene in monitoring wells II-3 and II-9 evidence periodic detections, with no clear concentration trends for the values reported White Street Landfill - Phase II (Permit # 41-03) Water Quality Monitoring Report Greensboro, North Carolina S&ME Project No. 1584-98-081C January 11, 2017 9 following the promulgation of the revised SWSL. At monitoring well II-2 a trend of rising concentrations over time, which generally plateaued after 2009 is suggested by the data set. ♦The time series plots of the concentrations of naphthalene in monitoring well II-6 indicate this parameter was detected periodically similar concentrations over time. ♦The time series plot for concentrations of tetrachloroethene in monitoring wells II-2 and II-7B depicts long term trends of declining concentrations over time. ♦The time series plot for concentrations of trichloroethene in monitoring well II-2 depicts a long term trend of declining concentrations over time. ♦The time series plot for concentrations of tetrahydrofuran in monitoring wells II-4A and II-8 depict relatively stable concentrations overtime, whereas the concentrations at monitoring well II-7B exhibited much greater variability. ♦The time series plot for concentrations of vinyl chloride in monitoring well II-2 depicts relatively stable concentrations over time. Whereas monitoring wells II-9 depict periodic detections separated by events reporting non-detections. ♦The time series plot for the concentrations of total xylenes in monitoring well II-6 suggests that the first detection of this constituent coincided with the promulgation of the revised SWSL. Following the revised SWSL, there is a slight downward trend in the concentrations. Appendix II - Semi-Volatile Organic Compounds ♦The time series plot for the concentrations of bis (2-ethylhexyl) phthalate revealed that these were the first detections at wells II-4A, II-5 and II-8, the second detection at well II-7, and the third time it was detected at well II-2. Each detection was an estimated concentration below the SWSL. ♦The time series plot for the concentrations of o-toluidine in wells II-1 and II-6 suggests that this was the first detection of this constituent in well II-1 and the only the second detection of this constituent at well II-6. Appendix II - Metals ♦The time series plot for concentrations of antimony in well II-6 depicts a high percentage of non- detects in the data set. With only seven detected concentrations, each estimated, no obvious concentration trends were recognized. ♦The time series plot for concentrations of arsenic in wells II-4A, II-6, II-7, and II-12 depict a high percentage of non-detects in each data set. Each detected concentration was estimated and followed by one or more events reporting non-detections. ♦The time series plots for concentrations of barium in the majority of the compliance wells show minor variations in detected concentrations with no obvious trends observed. Background well MW-13 exhibits similar fluctuations in detected concentrations as those observed at many down- gradient compliance wells. A slight upward trend in concentrations over time was suggested by the data for well II-8. Wells II-5 and II-7 depict trends of rising concentration beginning in 2014. ♦The time series plot for cadmium in well II-9 depicts four detections since 2005, with no discernible concentration trend apparent. ♦Time series plots of the concentrations of cobalt in wells II-1, II-3B, II-5, II-6, II-7, II-8, and II-9 suggest fluctuating concentrations over time, with no obvious or consistent trends over time recognized. The plots for wells II-3 and II-12 suggests declining cobalt concentrations over time. ♦The time series plots for concentrations of copper in the compliance wells depict no trends of rising concentrations over time. White Street Landfill - Phase II (Permit # 41-03) Water Quality Monitoring Report Greensboro, North Carolina S&ME Project No. 1584-98-081C January 11, 2017 10 ♦The time series plots for concentrations of lead in wells II-3B and II-12 evidence periodic detections of estimated concentrations. ♦The time series plots for concentrations of mercury in well II-3 evidence periodic detections of estimated concentrations following the change to the lower SWSL. No obvious trend of concentration changes over time was recognized. ♦The time series plots for concentrations of nickel in wells II-3, II-3B, II-4A, II-5, II-6, II-7, II-9, and II- 12 exhibit relatively stable concentrations. Following the change to the lower SWSL, data for monitoring wells II-1 and II-8 exhibit a slight upward trends over time. ♦The time series plots for concentrations of vanadium in compliance wells II-2, II-4A, II-8, II-12, and background well MW-13 exhibit no obvious trends of rising or falling concentrations. The plots for compliance well II-7B exhibits a trend of slight declining concentrations. ♦The time series plots for concentrations of zinc in compliance wells II-3, II-5, II-6, II-7B, II-8, and background well MW-13 generally exhibit periodic detections with the detected concentrations relatively stable. The data set for well II-9 depicts two concentration spikes during 2014 and one during the spring of 2016. Following these events the zinc concentrations return to levels at or below the SWSL. Although unproven, we infer that these spikes in concentrations are likely related to temporal flooding of this low-lying area along Buffalo Creek, rather than indicative of a release from the landfill. Analytical data from future monitoring events will be used to re-evaluate the trends interpreted from the time series plots. 5.2.1.3 Non-Parametric Tolerance Limit Tests Non-Parametric Tolerance Limits computations were employed in order to calculate the appropriate statistical upper limit for each of the quantified monitored parameters. In order to determine if any individual parameter concentration detected during this monitoring event represents a statistically significant increase over the historic background concentrations, once the respective upper limit was obtained, the compliance data were compared via an Inter-Well Comparison to the statistical upper limit to determine if a statistically significant increase (SSI) may have occurred. For parameters suggested to exhibit an SSI by Inter-Well comparisons, the corresponding time vs concentration plot was review and an Intra-Well comparison was preformed to assess spatial variability and the potential relevance of the Inter- Well comparison suggested SSI. The statistical tests applied suggest that volatile organic, semi-volatile organics, and inorganic parameters were detected during this monitoring event at concentrations that exceed the corresponding statistical upper limit. The statistical tests applied suggest that cobalt, nickel, 1,1-dichloroethane, 1,4- dichlorobenzene, chlorobenzene, cis 1,2-dichloroethene, bis (2-ethylhexyl) phthalate, and o-toluidine were detected during the September 2016 monitoring event with concentrations that exceed their corresponding statistically computed upper limit. The Inter-Well comparison tests of the compliance results to the statistical upper limits suggest the following represent a SSI over the historic background concentrations: ♦current cobalt concentration at compliance wells II-1 and II-6, ♦current nickel concentrations at compliance wells II-6 and II-8, ♦current 1,1-dichloroethane concentrations at compliance wells II-2 and II-3, ♦current 1,4-dichlorobenzene concentration at compliance well II-1, White Street Landfill - Phase II (Permit # 41-03) Water Quality Monitoring Report Greensboro, North Carolina S&ME Project No. 1584-98-081C January 11, 2017 11 ♦current chlorobenzene concentration at compliance well II-6, ♦current cis-1,2-dichloroethene concentration at compliance wells II-2. A review of the time vs concentration plots indicate no consistent trends for rising concentrations for these constituents, with the following exceptions: ♦nickel at well II-8, Several years ago, the NCDEQ-SWS added tetrahydrofurans to the assessment monitoring constituents list for C&D landfills. Consequently, the historic data set for this compound is limited to 10 data points for each well. Therefore, the statistical power of the intra-well and inter-well non-parametric tolerance limits tests is reduced. Additional time series data is needed to understand the significance of the data trends. Prior SSIs triggered the Assessment Monitoring across Phase II. Certain constituent concentrations required Corrective Measures that are currently conducted for portions of Phase II. 5.3 Hydraulic Conductivity In-situ hydraulic conductivity tests were performed by BPA Environmental and Associates Inc. (BPA) on wells I-5, II-1, II-2, II-3, II-4, II-5 and MW-13 on February 2-5, 1996. The data from these tests yielded hydraulic conductivity values ranging from 0.042 feet/day in II-5 to 0.380 feet/day in II-3. A complete discussion of the test methods and calculations was presented in BPA’s February 1996 report “In-Situ Hydraulic Conductivity Testing, White Street Landfill, Greensboro, North Carolina”. In situ hydraulic conductivity tests were performed by HDR Engineering, Inc. on monitoring wells II-6, II-7, II-8 and MW-14 in the fall of 1995. In-situ hydraulic conductivity tests were performed by S&ME on monitoring well II-4A in the fall of 2013. The hydraulic conductivity’s determined ranged from 0.221 feet/day at well II-6 to 2.353 feet/day in well II-8. These data were used to calculate groundwater flow velocities across the site. 5.4 Groundwater Flow Direction and Rate The static water levels in the Phase II monitoring wells were measured during September 2016. The depth to the water table ranged from 6.48 to 20.21 feet below the top of well casing. Groundwater and well casing elevation data are presented in Table 1. A groundwater contour map was constructed using the data collected during September 2016 and is presented as Figure 3. The groundwater gradient at each well was calculated assuming a constant groundwater gradient along the flow line between adjacent groundwater elevation contours or between the well and the nearest contour. Groundwater flow lines were drawn through each well based upon the groundwater elevation data collected during this monitoring event. The groundwater elevation data collected during this monitoring event indicates that the groundwater beneath Phase II generally flows toward the northwest, toward Buffalo Creek. This is, in general, consistent with the results from previous monitoring events. Based on a variation of Darcy’s Law, the rate of groundwater movement within the regolith aquifer was calculated at each monitoring well using the following equation: White Street Landfill - Phase II (Permit # 41-03) Water Quality Monitoring Report Greensboro, North Carolina S&ME Project No. 1584-98-081C January 11, 2017 12 V = Ki ÷ N Where V = velocity (ft/day) K = hydraulic conductivity (ft/ft) i = groundwater gradient (ft/ft) n =effective porosity (dimensionless) Calculated hydraulic conductivity and gradient values and estimated effective porosity values for each well were used in the velocity calculations. The 20 percent effective porosity value is based on porosity and specific yield versus grain size distribution relationships presented in Fetter (1988), and is typical of the types of soils (predominantly silts and sandy silts with some clays) comprising the regolith at the landfill. The calculated groundwater velocities ranged from 0.008 feet/day to 0.260 feet/day and are summarized in Table 5. 5.5 Surface Water Five surface water samples were collected on September 26, 2016. The results of the laboratory analyses for Appendix I constituents in the surface water samples are summarized in Tables 6 and 7.Appendix II contains the complete laboratory reports. The following summarizes the exceedances of the 2B Standards. The complete laboratory analytical report is included in Appendix II. ♦No target constituents were detected above the 2B Standards during the September 2016 sampling event, except for copper. The copper concentrations upstream of the facility were similar to those detected down-stream. Upstream sources includes a municipal wastewater treatment plant. Based on these findings, the Phase 2 is not believe to be the source of the apparent copper 2B Standard exceedance. 5.6 Quality Assurance A qualitative review of the data was performed to verify that the detected concentrations in the laboratory report were of known quality. A formal, quantitative data validation was not performed. Laboratory- assigned data qualifiers were evaluated to verify that rejected or unsupportable data were not included in the dataset. Quality control data provided in the laboratory reports were also reviewed. No rejected or otherwise unacceptable quality data were reported from the laboratory. A duplicate sample was collected from monitoring well MW-13, as "Duplicate II,” and analyzed for the Appendix II constituents. No target semi-volatile organic compounds, organochlorine pesticides, chlorinated herbicides, or poly biphenyl compounds were detected in either sample suggesting good method precision. A comparison of the two datasets reveals that the detected compounds and the concentrations reported for sample MW-13 show good correlation with the duplicate sample results. This finding suggests good method precision. Each of the monitoring wells in Phase II were sampled using dedicated micro-purge pumps. Therefore, no equipment rinse samples were collected for analyses. Trip blank samples accompanied the sample bottles from the time they left the laboratory until they returned to the laboratory. The trip blank sample for the September 2016 monitoring event was analyzed for Appendix II volatile organic constituents. Laboratory QC samples were analyzed for all constituents included in this sampling event. The results of the duplicate, trip blank, and laboratory QC sample analyses are included in Appendix II. White Street Landfill - Phase II (Permit # 41-03) Water Quality Monitoring Report Greensboro, North Carolina S&ME Project No. 1584-98-081C January 11, 2017 13 6.0 CAP Monitoring Activities Additional Groundwater Quality Monitoring The following additional investigations were conducted contemporaneously with the September 2016, semi-annual compliance monitoring event. 1.In support of the Corrective Action Plan (CAP) developed and implemented for Phase II, groundwater samples were collected at Sentinel monitoring wells SMW-1, SWM-3, SMW-4, and NES monitoring well II-9 and submitted for laboratory analysis for Appendix II constituents. 2.In support of the CAP developed and implemented for Phase II, groundwater samples were collected at monitoring wells II-1, II-9, and SMW-3 and submitted for laboratory analysis using various analytical methods, to measure certain monitored natural attenuation (MNA) indicator parameters. Monitoring well MW-14 ordinarily sampled with the suite of wells was not sampled during this event since it was found to be dry. 3.To further evaluate and validate groundwater quality in the region down-gradient of compliance well II-3, a groundwater sample was collected at monitoring well II-3B and submitted for analysis for Appendix II constituents. The monitoring well locations are depicted on Figure 4. Complete laboratory reports are included in Appendix IV. The following provides a brief summary of the analytical results. Sentinel Monitoring Wells and NES Well II-9 Vinyl chloride was detected at Sentinel monitoring wells SMW-3. This finding suggests that the areas of concern represented by this well is not yet compliant with the CAP specified groundwater clean-up goals. During this event vinyl chloride was detected in NES well II-9 at a concentration greater than the corresponding 2L Standard. No other volatile organic compounds were detected at well II-9 with concentrations greater than the corresponding 2L Standards. Sentinel well SMW-3 is located along the estimated flow path for shallow groundwater migrating from NES well II-9 toward the Compliance Boundary. The analytical results for sentinel well SMW-3 suggest that the areas of concern represented by this well has not achieved the CAP specified groundwater clean-up goals. It is important to note that the concentration detected during this event was less than the 5.0 µg/L detected in NES well II-9 on 9/8/10, and predating the installation of the CAP specified northern EBuffer. Tables IV-1A, IV-1B, IV-1C, IV-1D, IV-1E contained in Appendix IV, provides a summary of recent Appendix I volatile organic constituent analytical results for wells II-1, II-2, II-6, II-7, II-7B, II-9, SMW-1, SMW-3, and SMW-4. The tables also summarize the data for the companion wells, located along the individual groundwater flow path, between a sentinel well and limits of waste. MNA Monitoring MNA parameters were collected and measured in groundwater samples collected at wells II-1, II-9, and SMW-3. The data collected is being complied and examined as indicator that MNA processes are White Street Landfill - Phase II (Permit # 41-03) Water Quality Monitoring Report Greensboro, North Carolina S&ME Project No. 1584-98-081C January 11, 2017 14 occurring in portions of the shallow aquifer monitored by these wells. The MNA assessment finding will be presented and discussed in detail in a future Corrective Action Evaluation Report. Assessment Well II-3B No Appendix I volatile organic constituents were detected above the corresponding 2L Standards at assessment well II-3B. Well II-3B is located along the estimated flow path for shallow groundwater migrating from the landfill toward monitoring well II-3, and further down-gradient toward Buffalo Creek and the compliance boundary. The analytical results for well II-3B confirm the prior groundwater quality assessment findings. The data suggests that shallow groundwater migrating from well II-3, achieves compliance with the 2L Standards prior to reaching the point of compliance. Assessment well II-3B is located in a position that is a better measure of groundwater compliance for this portion of the monitored unit, rather than the location of well II-3. 7.0 References Fetter, C. W., 1988, Applied Hydrogeology, New York; Macmillian Publishing Company, 1988, 592 pp. North Carolina Administrative Code, Title 15A, Department of Environment, Health and Natural Resources, Division of Environmental Management, Subchapter 2L, Classifications and Water Quality Standards Applicable to the Groundwaters of North Carolina, Sections .0100, .0200, and .0300; from the Environmental Management Commission Raleigh, North Carolina. North Carolina Administrative Code, Title 15A, Department of Environment, Health and Natural Resources, Division of Environmental Management, Subchapter 2B, Classifications and Water Quality Standards Applicable to the Surface Waters of North Carolina, Section .0200; from the Environmental Management Commission, Raleigh, North Carolina. North Carolina Administrative Code, Title 15A, Department of Environment, Health and Natural Resources, Division of Solid Waste Management, subchapter 13B, Solid Waste Management, Section .1600. White Street Landfill - Phase II (Permit # 41-03) Water Quality Monitoring Report Greensboro, North Carolina S&ME Project No. 1584-98-081C January 11, 2017 15 8.0 Certification I hereby certify this 11 th day of January 2017 that this report was prepared by me or under my direct supervision. ______________________________ Edmund Q.B. Henriques, L.G. Senior Geologist / Project Manager Technical support provided by: ______________________________ B. Summers Long Staff Professional Appendices Tables TABLE 1 WELL CONSTRUCTION AND GROUNDWATER ELEVATION DATA PHASE 2 - PERMIT # 41-03 WHITE STREET LANDFILL GREENSBORO, NORTH CAROLINA S&ME PROJECT NO. 1584-98-081C Well ID Date Installed Type Total Depth Well Diameter Depth to Top of Screen Well Screen Interval Geology of Screened Northing Easting Ground Elevation Top of Casing Elevation Depth to Groundwater1 Groundwater Elevation Interval NAD 83 NAD 83 NAVD 88 NAVD 88 9/26/2016 - 9/28/2016 9/26/2016 - 9/28/2016 (feet)(inches)(feet)(feet)(feet msl.)(feet msl.)(feet)(μs/cm) II-1 7/14/1989 Compliance 25 2 15 15-25 water table aquifer 863027.3314 1787495.6766 not measured 702.78 15.90 686.88 II-2 7/14/1989 Compliance 34 2 24 24-34 water table aquifer 864184.3539 1788403.6364 not measured 704.59 20.05 684.54 II-2B 7/10/2007 NES 29 2 14 14-29 water table aquifer 864268.6031 1788403.4707 not measured 698.84 not measured not sampled II-3 7/14/1989 Compliance 33 2 23 23-33 water table aquifer 864245.1544 1789031.9589 not measured 699.37 16.67 682.70 II-3B 6/3/2011 NES 28 2 13 13-28 water table aquifer 864365.2295 1789116.1385 not measured 694.49 14.13 680.36 II-4A 8/13/2013 Compliance 28 2 13 13-28 water table aquifer 863581.7689 1789359.9497 not measured 707.25 14.68 692.57 II-5 7/14/1989 Compliance 29 2 19 19-29 water table aquifer 863032.9389 1789345.4003 not measured 722.01 6.48 715.53 II-6 7/14/1989 Compliance 20 2 7.5 7.5-20 water table aquifer 862513.6388 1787002.3258 not measured 704.39 14.24 690.15 II-7 7/14/1989 Compliance 28 2 12.5 12.5-27.5 water table aquifer 863701.8380 1787823.6893 not measured 697.75 14.09 683.66 II-7B 12/11/2000 NES 104 2 90.7 90.7-103.5 bedrock aquifer 863703.7309 1787839.3286 not measured 700.86 17.25 683.61 II-8 7/14/1989 Compliance 35 2 20 20-35 water table aquifer 861207.1750 1786938.1186 not measured 717.76 9.55 708.21 II-9 3/21/2005 NES 25 2 10 10-25 water table aquifer 863924.1830 1787952.6658 not measured 696.78 11.68 685.10 II-10 3/21/2005 NES 23 2 9 9-24 water table aquifer 863511.6877 1787802.3724 not measured 703.78 not measured not sampled II-11 3/22/2005 NES 27 2 12 12-27 water table aquifer 864183.7253 1788058.432 not measured 701.63 not measured not sampled II-12 3/22/2005 NES 20 2 5 5-20 water table aquifer 862084.6402 1786802.0936 not measured 699.80 11.99 687.81 SMW-1 7/8/2010 CAP 18 2 8 8-18 water table aquifer 864374.8279 1788376.0728 not measured 692.87 11.46 681.41 SMW-3 7/8/2010 CAP 25 2 10 10-25 water table aquifer 863983.9035 1787857.4169 not measured 694.16 10.20 683.96 SMW-4 7/8/2010 CAP 24 2 9 9-24 water table aquifer 862512.4617 1786835.2747 not measured 697.43 11.05 686.38 MW-13 7/14/1989 Background 34 2 19 19-34 water table aquifer 858763.9106 1783188.5206 not measured 741.24 20.21 721.03 MW-14 7/14/1989 Background 35 2 20 20-35 water table aquifer 859453.8757 1788632.2264 not measured 786.65 dry dry City of Greensboro provided the top of casing elevations and ground surface elevations Well Construction details obtained from Well Construction Records reported by BPA Environmental & Engineering, Inc. feet bgs. = feet below ground surface feet msl. = feet mean sea level Depth to Groundwater 1 = below top of casing Groundwater Elevation = calculated groundwater elevation T:\Projects\1998\ENV\081C White Street Landfill (2014)\2016 Compliance Monitoring\Fall 2016\Phase 2\Phs2_September_2016_Tables.xlsx TABLE 2 SUMMARY OF GROUNDWATER SAMPLING FIELD PARAMETERS PHASE 2 - PERMIT # 41-03 WHITE STREET LANDFILL GREENSBORO, NORTH CAROLINA S&ME PROJECT NO. 1584-98-081C DATE WELL WELL TOC DEPTH TO WATER ODOR PURGE PUMP WELL EVAC PURGED TEMP pH SPEC ORP DO Ferrous TURBIDITY ID DEPTH ELEV.WATER ELEVATION METHOD RATE VOLUME VOLUME DRY?COND Iron (feet)(feet msl.)(feet)(feet msl.)(mL/min) (gallons)(liters)(yes/no) (deg C)(SU)(μs/cm)(mV-NHE) (mg/L)(mg/L)(NTU) 9/27/2016 II-1 25 702.78 15.90 686.88 None low flow 100 1.48 1.3 no 19.30 6.20 2.618 NM 0.38 NM 0.33 9/28/2016 II-2 29 704.59 20.05 684.54 None low flow 100 1.46 2.0 no 21.82 6.00 0.988 26 2.03 NM 0.30 9/28/2016 II-3 30 699.37 16.67 682.70 None low flow 100 2.17 0.9 no 16.75 5.63 0.457 69 1.03 NM 6.26 9/26/2016 II-3B 25 694.49 14.13 680.36 None low flow 100 1.77 0.9 no 20.45 6.16 0.548 61.0 0.29 NM 0.56 9/28/2016 II-4A 30 707.25 14.68 692.57 None low flow 100 2.50 1.0 no 18.73 5.90 1.611 87 2.30 NM 0.47 9/28/2016 II-5 16 722.01 6.48 715.53 None low flow 100 1.55 1.0 no 22.56 6.22 0.815 42 2.44 NM 3.12 9/28/2016 II-6 17 704.39 14.24 690.15 None low flow 100 0.45 1.3 no 17.92 6.58 2.522 -72.0 2.15 NM 16.99 9/27/2016 II-7 27 697.75 14.09 683.66 None low flow 100 2.10 0.9 no 19.11 5.58 0.646 103 0.84 NM 4.31 9/27/2016 II-7B 101 700.86 17.25 683.61 None low flow 100 13.65 0.9 no 18.66 9.22 0.485 94.1 0.50 NM 1.78 9/26/2016 II-8 32.5 717.76 9.55 708.21 None low flow 100 3.74 0.8 no 22.22 6.07 3.124 50 0.50 NM 1.79 9/27/2016 II-9 32.5 696.78 11.68 685.10 None low flow 100 3.39 0.8 no 17.18 6.11 0.758 19 0.38 NM 2.40 9/26/2016 II-12 22.8 699.80 11.99 687.81 None low flow 100 1.76 1.0 no 19.82 6.42 0.768 -48 0.17 NM 3.74 9/26/2016 SMW-1 15 692.87 11.46 681.41 None low flow 100 0.58 0.8 no 18.00 5.68 0.329 24 0.42 NM 3.10 9/27/2016 SMW-3 32.5 694.16 10.20 683.96 None low flow 100 3.63 0.9 no 17.86 6.45 0.712 34 0.28 NM 1.42 9/26/2016 SMW-4 20.5 697.43 11.05 686.38 None low flow 100 1.54 1.0 no 17.54 5.83 0.845 42 0.30 NM 0.32 9/27/2016 MW-13 33 741.24 20.21 721.03 None low flow 100 2.08 0.8 dry 18.06 6.54 0.34 42.20 4.81 NM 21.3 9/27/2016 MW-14 34 786.65 dry dry dry dry dry dry dry d dry dry dry dry dry dry dry Notes: 1. TEMP = groundwater temperature, measured in degrees Celsius 2. Pump Rate, measured in milliliters/minute 3. SPEC COND = Specific Conductance, measured in μs/cm indicates micro Siemens per centimeter. 4. SU indicates Standard Units. 5. NTU indicates Nephelometric Turbidity Units. 6. ORP = Oxidation Reduction Potential, mV-NHE indicates millivolts-Normal Hydrogen Electrode. 7. EVAC = evacuated volume of groundwater 8. DO = dissolved oxygen, measured in milligrams per liter NC SWSL NCAC 2L NCDEQ Federal Well ID II-1 II-2 II-3 II-3B II-4A II-5 II-6 II-7 II-7B II-8 II-9 II-12 MW-13 SWM-1 SMW-3 SMW-4 Standards IMAC MCLs Sample ID 4301-II1 4301-II2 4301-II3 4301-II3B 4301-II4A 4301-II5 4301-II-6 4301-II7 4301-II-7B 4103-II8 4103-II9 4103-II12 4103-MW13 410-SMW1 410-SMW3 410-SMW4 Date Collected 09/27/16 09/28/16 09/28/16 09/26/16 928/2016 09/28/16 09/28/16 09/27/16 09/27/16 09/26/16 09/27/16 09/26/16 09/28/16 09/26/16 09/27/16 09/26/16 Detected Analytes (ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L) 75 1,1-Dichloroethane 0.76 J 8.6 12 0.81J 1.0J <0.13 <0.13 <0.13 0.63J <0.13 4.6J <0.13 <0.13 <0.13 5.6 <0.13 5 6 NS NS 69 1,2-Dichlorobenzene 0.57 J <0.19 <0.19 <0.19 <0.19 <0.19 0.55J <0.19 <0.19 <0.19 <0.19 <0.19 <0.19 <0.19 <0.19 <0.19 5 20 NS 600 71 1,4-Dichlorobenzene 8.6 2.2 <0.19 <0.19 1.2 <0.19 4.3 <0.19 <0.19 <0.19 <0.19 <0.19 <0.19 <0.19 <0.19 <0.19 1 6 NS 75 16 Benzene <0.15 <0.15 1.5 <0.15 0.67J <0.15 2.1 <0.15 <0.15 <0.15 <0.15 <0.15 <0.15 <0.15 <0.15 <0.15 1 1 NS 5 39 Chlorobenzene 4.3 <0.17 <0.17 <0.17 2.7J <0.17 6.4 <0.17 <0.17 1.7J 0.40J <0.17 <0.17 <0.17 <0.17 <0.17 3 50 NS 100 41 Chloroethane <0.23 <0.23 <0.23 <0.23 0.62J <0.23 <0.23 <0.23 <0.23 <0.23 <0.23 <0.23 <0.23 <0.23 <0.23 <0.23 10 3,000 NS NS 78 cis-1,2-Dichloroethene <0.15 20 1.1 J <0.15 <0.15 <0.15 <0.15 <0.15 <0.15 <0.15 8.0 <0.15 <0.15 <0.15 12 <0.15 5 70 NS 70 148 Naphthalene <0.11 <0.11 <0.11 <0.11 <0.11 <0.11 1.5J <0.11 <0.11 <0.11 <0.11 <0.11 <0.11 <0.11 <0.11 <0.11 10 6 NS NS 192 Tetrachloroethene <0.17 0.69J <0.17 <0.17 <0.17 <0.17 <0.17 <0.17 0.44 J <0.17 <0.17 <0.17 <0.17 <0.17 <0.17 <0.17 1 0.7 NS 5 201 Trichloroethene <0.15 1.4 <0.15 <0.15 <0.15 <0.15 <0.15 <0.15 <0.15 <0.15 <0.15 <0.15 <0.15 <0.15 <0.15 <0.15 1 3 NS 5 458 Tetrahydrofuran <0.80 <0.80 <0.80 <0.80 1.4 <0.80 <0.80 <0.80 50 7.0 <0.80 <0.80 <0.80 <0.80 <0.80 <0.80 NS NS NS NS 211 Vinyl Chloride <0.32 3.1 <0.32 <0.32 <0.32 <0.32 <0.32 <0.32 <0.32 <0.32 1.4 <0.32 <0.32 <0.32 1.5 <0.32 1 0.03 NS 2 346 Xylenes (Total)<0.45 <0.45 <0.45 <0.45 <0.45 <0.45 1.4J <0.45 <0.45 <0.45 <0.45 <0.45 <0.45 <0.45 <0.45 <0.45 5 500 NS 10 NC SWSL NCAC 2L NCDEQ Federal Well ID II-1 II-2 II-3 II-3B II-4A II-5 II-6 II-7 II-7B II-8 II-9 II-12 MW-13 SWM-1 SMW-3 SMW-4 Standards IMAC MCLs Sample ID 4301-II1 4301-II2 4301-II3 4301-II3B 4301-II4A 4301-II5 4301-II-6 4301-II7 4301-II-7B 4103-II8 4103-II9 4103-II12 4103-MW13 410-SMW1 410-SMW3 410-SMW4 Date Collected 09/27/16 09/28/16 09/28/16 09/26/16 09/28/16 09/28/16 09/28/16 09/27/16 09/27/16 09/26/16 09/27/16 09/26/16 09/28/16 09/26/16 09/27/16 09/26/16 Detected Analytes (ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L) 111 Bis(2-ethylhexyl)Phthalate <1.7 3.0J <1.7 <1.7 5.0J 2.3J <1.7 3.3J <1.7 2.6J <1.7 <1.7 <1.7 <1.7 <1.7 <1.7 15 3 NS 6 197 o-Toluidine 1.3J <1.1 <1.1 <1.1 <1.1 <1.1 1.2J <1.1 <1.1 <1.1 <1.1 <1.1 <1.1 <1.1 <1.1 <1.1 10 NS NS NS NC SWSL NCAC 2L NCDEQ Federal Well ID II-1 II-2 II-3 II-3B II-4A II-5 II-6 II-7 II-7B II-8 II-9 II-12 MW-13 SWM-1 SMW-3 SMW-4 Standards IMAC MCLs Sample ID 4301-II1 4301-II2 4301-II3 4301-II3B 4301-II4A 4301-II5 4301-II-6 4301-II7 4301-II-7B 4103-II8 4103-II9 4103-II12 4103-MW13 410-SMW1 410-SMW3 410-SMW4 Date Collected 09/27/16 09/28/16 09/28/16 09/26/16 09/28/16 09/28/16 09/28/16 09/27/16 09/27/16 09/26/16 09/27/16 09/26/16 09/28/16 09/26/16 09/27/16 09/26/16 Detected Analytes (ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L) 13 Antimony <0.220 <0.220 <0.220 <0.220 <0.220 <0.220 0.244 J <0.220 <0.220 <0.220 <0.220 <0.220 <0.220 <0.220 <0.220 <0.220 6 NS 1 6 14 Arsenic <6.80 <6.80 <6.80 <6.80 9.78 J <6.80 9.30 J 7.45 J <6.80 <6.80 <6.80 6.87 J <6.80 <6.80 <6.80 <6.80 10 10 NS 0.010 15 Barium 346 50.9J 189 175 177 204 205 186 11.9J 146 108 379 85.1J 114 219 182 100 700 NS 2,000 34 Cadmium <0.360 <0.360 <0.360 <0.360 <0.360 <0.360 <0.360 <0.360 <0.360 <0.360 0.375 <0.360 <0.360 <0.360 <0.360 <0.360 1 2 NS 5 53 Cobalt 50.2 <1.10 10.6 1.35 J <1.10 15.4 26.2 1.60 J <1.10 2.29 J 3.97 J 3.05 J <1.10 43.4 2.88 J 1.50 J 10 NS 1 NS 54 Copper 5.98 J 3.27 J 2.63 J 3.04 J 3.31 J 2.97 J 4.37 J 5.13 J 3.95 J 8.28 J 4.47 J <1.60 3.10 J 4.68 J 3.04 J 3.74 J 10 1,000 NS 1,300 131 Lead <3.10 <3.10 <3.10 3.52 J <3.10 <3.11 <3.12 <3.13 <3.14 <3.15 <3.10 3.13 J <3.10 <3.10 <3.10 <3.10 10 15 NS 0 132 Mercury <0.170 <0.171 0.248 <0.170 <0.170 <0.170 <0.170 <0.170 <0.170 <0.170 <0.170 <0.170 <0.170 <0.170 <0.170 <0.170 0.2 1 NS 0.002 152 Nickel 28.1 J <2.20 12.7 J 5.74 J 35.9 J 8.05 J 51.5 6.69 J <2.20 51.5 3.44 J 8.85 J <2.20 6.47 J <2.20 7.49 J 50 100 NS NS 209 Vanadium <1.40 2.08 J <1.40 <1.40 1.89 J <1.40 <1.40 <1.40 1.61 J 1.96 J <1.40 2.07 J 3.74 J 4.92 J <1.40 <1.40 25 NS 0.3 NS 213 Zinc <4.40 <4.40 5.23 J <4.40 <4.40 7.93 J 8.75 J <4.40 6.36 J 14.8 58.0 <4.40 4.65 52.6 <4.40 5.91 J 10 1,000 NS 5,000 ug/L =concentrations reported in micrograms per liter (ug/L)NS = No Standard < = concentration is less than the method detection limit NA = constituent not analyzed NC SWSL =North Carolina Solid Waste Section Limit J =Parameters are estimated values between the detection limit and the NC SWSL. NCAC 2L Standards =15A North Carolina Administrative Code 2L .0200, Groundwater Quality Standards for Class GA groundwater JB =analyte detected in method blank and at a concentrations between the detection limit and the NC SWSL NCDEQ IMAC = North Carolina Interim Maximum Allowable Concentration highlighted cells indicate detected concentration Federal MCL = Federal Maximum Concentration Limit concentrations in bold exceed the NCAC 2L standard or IMAC Appendix II Volatile Organic Compounds Solid Waste Section ID # Appendix II Semivolatile Organic Compounds Solid Waste Section ID # Sample Locations Sample Locations Solid Waste Section ID # Sample Locations Appendix II Metals S&ME PROJECT NO. 1584-98-081C TABLE 3 SUMMARY OF GROUNDWATER ANALYSES RESULTS - DETECTIONS PHASE 2 - PERMIT # 41-03 WHITE STREET LANDFILL GREENSBORO, NORTH CAROLINA TABLE 4 SUMMARY OF GROUNDWATER STANDARD EXCEEDANCES PHASE 2 - PERMIT # 41-03 WHITE STREET LANDFILL GREENSBORO, NORTH CAROLINA S&ME PROJECT NO. 1584-98-081C NCAC 2L NCDEQ Federal Well ID II-1 II-2 II-3 II-3B II-4A II-5 II-6 II-7 II-7B II-8 II-9 II-12 MW-13 SMW-1 SMW-3 SMW-4 Standards IMAC MCLs Sample ID 4301-II1 4301-II2 4301-II3 4301-II3B 4301-II4A 4301-II5 4301-II-6 4301-II7 4301-II-7B 4103-II8 4103-II9 4103-II12 4103-MW13410-SMW1410-SMW3 410-SMW4 Date Collected 09/27/16 09/28/16 09/28/16 09/26/16 09/28/16 09/28/16 09/28/16 09/27/16 09/27/16 09/26/16 09/27/16 09/26/16 09/28/16 09/26/16 09/27/16 09/26/16 Detected Analytes (ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L) 75 1,1-Dichloroethane 8.6 12 6 NS NS 71 1,4-Dichlorobenzene 8.6 6 NS 75 16 Benzene 1.5 2.1 1 NS 5 211 Vinyl Chloride 3.1 1.4 1.5 0.03 NS 2 111 Bis(2-ethylhexyl)Phthalate 5.0J 3.3J 3 NS 6 NCAC 2L NCDEQ Federal Well ID II-1 II-2 II-3 II-3B II-4A II-5 II-6 II-7 II-7B II-8 II-9 II-12 MW-13 SMW-1 SMW-3 SMW-4 Standards IMAC MCLs Sample ID 4301-II1 4301-II2 4301-II3 4301-II3B 4301-II4A 4301-II5 4301-II-6 4301-II7 4301-II-7B 4103-II8 4103-II9 4103-II12 4103-MW13410-SMW1410-SMW3 410-SMW4 Date Collected 09/27/16 09/28/16 09/28/16 09/26/16 09/28/16 09/28/16 09/28/16 09/27/16 09/27/16 09/26/16 09/27/16 09/26/16 09/28/16 09/26/16 09/27/16 09/26/16 Detected Analytes (ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L) 53 Cobalt 10.6 1.35 J 15.4 26.2 1.60 J 2.29 J 3.97 J 3.05 J 43.4 2.88 J 1.50 J NS 1 NS 209 Vanadium 2.08 J 1.89 J 1.61 J 1.96 J 2.07 J 3.74 J 4.92 J NS 0.3 NS ug/L =concentrations reported in micrograms per liter (ug/L) NCAC 2L Standards =15A North Carolina Administrative Code 2L .0200, GW Quality Standards for Class GA groundwater. Concentration greater than the NCAC 2L Standards or NCDEQ IMAC are shown in bold NCDEQ IMAC =Interim Maximum Allowed Concentration, NCDEQ Federal MCL =Maximum Concentration Levels, USEPA NS =no MCL listed by USEPA, or no NCAC 2L Standard, or no IMAC Appendix II Volatile Organic Compounds Solid Waste Section ID # Sample Locations Appendix II Metals (totals) Solid Waste Section ID # Sample Locations Appendix II Semi-Volatile Organics PHASE 2 - PERMIT # 41-03 Well No.Hydraulic Porosity Gradient Groundwater Conductivity September 2016 Velocity (K = feet/day)(n = %)(I = feet/foot)(V= feet/day) II-1 0.119 0.2 0.022 0.013 II-2 0.329 0.2 0.018 0.030 II-3 0.380 0.2 0.008 0.016 II-4A 0.295 0.2 0.041 0.060 II-5 0.042 0.2 0.038 0.008 II-6 0.221 0.2 0.019 0.020 II-7 1.077 0.2 0.011 0.061 II-8 2.353 0.2 0.022 0.260 MW-14 0.740 0.2 dry dry SMW-1 0.858 0.2 0.011 0.046 SMW-3 0.630 0.2 0.010 0.033 SMW-4 0.469 0.2 0.023 0.054 Notes: Hydraulic Conductivity's from slug test data by BPA Environmental & Engineering Inc. HDR Engineering, S&ME Inc. Porosity values from published literature, based on soil types Gradients are based upon groundwater elevation data from this monitoring event Velocity calculated using V = KI/n TABLE 5 GROUNDWATER VELOCITY DATA WHITE STREET LANDFILL GREENSBORO, NORTH CAROLINA S&ME PROJECT NO. 1584-98-081 T:\Projects\1998\ENV\081C White Street Landfill (2014)\2016 Compliance Monitoring\Fall 2016\Phase 2\Phs2_September_2016_Tables.xlsx NC SWSL NCAC 2B Sample Location SW-1 SW-2 SW-3 SW-4 SW-5 Standards Sample ID 4103-SW1 4103-SW2 4103-SW3 4103-SW4 4103-SW5 Date Collected 09/26/16 09/26/16 09/26/16 09/26/16 09/26/16 Detected Analytes (µg/L)(µg/L)(µg/L)(µg/L)(µg/L)(µg/L)(µg/L) 3 Acetone <10 11 J <10 <10 11 J 100 no standard 44 Chloroform <0.18 <0.18 1.6 J <0.18 <0.18 5 no standard 196 Toluene <0.14 1.1 <0.14 <0.14 <0.14 1 11 NC SWSL NCAC 2B Sample Location SW-1 SW-2 SW-3 SW-4 SW-5 Standards* Sample ID 4103-SW1 4103-SW2 4103-SW3 4103-SW4 4103-SW5 Date Collected 09/26/16 09/26/16 09/26/16 09/26/16 09/26/16 Detected Analytes (µg/L)(µg/L)(µg/L)(µg/L)(µg/L)(µg/L)(µg/L) 13 Antimony <0.220 <0.220 <0.220 <0.220 0.479 J 6 no standard 15 Barium 44.8 J 52.8 J 17.6 J 27.9 J 33.9 J 100 1000 53 Cobalt <1.10 1.30 J <1.10 <1.10 <1.10 10 no standard 54 Copper 4.52 J 2.57 J 6.61 J 6.03 J 8.07 J 10 2.7 152 Nickel <2.20 <2.20 3.54 J 3.34 J 6.44 J 50 25 194 Thallium 0.190 J 0.124 J 0.205 J 0.187 J 0.316 J 5.5 no standard 209 Vanadium 1.95 J <1.40 <1.40 1.64 J 4.58 J 25 no standard 213 Zinc 5.08 J 5.21 J 20.0 16.4 27.7 10 36 < = concentrations is less than the method detection limit shown NC SWSL =North Carolina Solid Waste Section Limit J = Concentration reported greater than the method detection limit but less than the SWSL, thus it is considered estimated * = Title 15A NCAC 2B Standards for all Water Supply Classifications S&ME PROJECT NO. 1584-98-081C TABLE 6 SUMMARY OF SURFACE WATER ANALYSES RESULTS - DETECTIONS PHASE 2 - PERMIT # 41-03 WHITE STREET LANDFILL GREENSBORO, NORTH CAROLINA Appendix II Volatile Organic Compounds Solid Waste Section ID # Sample Locations Appendix II Metals (totals) Solid Waste Section ID # Sample Locations Sample Location SW-1 SW-2 SW-3 SW-4 SW-5 NC SWSL NCAC 2B Sample ID 4103-SW1 4103-SW2 4103-SW3 4103-SW4 4103-SW5 Standards* Date Collected 09/26/16 09/26/16 09/26/16 09/26/16 09/26/16 Detected Analytes (µg/L)(µg/L)(µg/L)(µg/L)(µg/L)(µg/L)(ug/L) 54 Copper 4.52 J 6.61 J 6.03 J 8.07 J 10 2.7 ug/L = concentrations reported in micrograms per liter (ug/L) < = concentrations is less than the method detection limit shown NC SWSL = North Carolina Solid Waste Section Limit * = Title 15A NCAC 2B Standards for all Water Supply Classifications J = Blank cell indicates no 2B Standard exceedance detected. Concentration reported greater than the method detection limit but less than the SWSL, thus it is considered estimated Appendix II Constituents TABLE 7 SUMMARY OF 2B SURFACE WATER STANDARD EXCEEDANCES PHASE 2 - PERMIT # 41-03 WHITE STREET LANDFILL GREENSBORO, NORTH CAROLINA S&ME PROJECT NO. 1584-98-081C Solid Waste Section ID # Figures I I - 8 I - 2 I - 1 I - 3 I - 5 M W - 1 4 I I - 6 I - 4 I I - 1 I I - 7 I I - 2 I I - 3 I I - 5 I I - 4 MW-13 I I - 9 I I - 1 0 I I - 1 1 I I - 1 2 I I - 7 B I I - 4 A S M W - 4 S M W - 3 S M W - 1 I I - 3 B SITE BASE MAP WHITE STREET LANDFILL GREENSBORO, NORTH CAROLINA AS SHOWN DSB/RDM EQBH 1584-98-081B OCTOBER 2013 1 PHASE II SURFACE WATER SAMPLING POINTMONITORING WELL LOCATION 2 LEGEND: 0 G R A P H I C S C A L E 8 0 0 4 0 0 8 0 0 S C A L E : 1 " = 8 0 0 ' OFF-SITE PROPERTY OWNED BYTHE CITY OF GREENSBORO L A N D F I L L P H A S E I I L A N D F I L L P H A S E I PHASE II WHITE STREET LANDFILL GREENSBORO, NORTH CAROLINA AS SHOWNDSB/RDMBSL 1584-98-081NOVEMBER 20162 SURFACE WATER SAMPLING LOCATIONS 0GRAPHIC SCALE 800 400 800 SCALE: 1" = 800' LE G E N D ST R E A M S A M P L E L O C A T I O N I I - 8 I - 2 I - 1 I - 3 I - 5 M W - 1 4 I I - 6 I - 4 I I - 1 I I - 7 I I - 2 I I - 3 I I - 5 I I - 4 MW-13 I I - 9 I I - 1 0 I I - 1 1 I I - 1 2 I I - 7 B I I - 4 A S M W - 4 S M W - 3 S M W - 1 I I - 3 B 6 9 0 . 0 0 7 0 0 . 0 0 71 0 . 0 0 6 9 0 . 0 0 7 0 0 . 0 0 7 1 0 . 0 0 GROUNDWATER FLOW MAP WHITE STREET LANDFILL GREENSBORO, NORTH CAROLINA AS SHOWN DSB/RDM BSL 1584-98-081C NOVEMBER 2016 3 PHASE II SURFACE WATER SAMPLING POINTGROUNDWATER ELEVATION (SEPTEMBER 2016)MONITORING WELL LOCATIONGROUNDWATER FLOW DIRECTIONGROUNDWATER CONTOUR LINE 2 LEGEND: 0 G R A P H I C S C A L E 8 0 0 4 0 0 8 0 0 S C A L E : 1 " = 8 0 0 ' A R E A O F D E T A I L ( F I G U R E 4 ) OFF-SITE PROPERTY OWNED BYTHE CITY OF GREENSBORO ( 6 8 4 . 5 4 ) ( 6 8 3 . 6 1 ) ( 6 8 3 . 6 6 ) ( 6 9 2 . 5 7 ) ( 7 1 5 . 5 3 ) ( 6 8 6 . 8 8 ) ( 6 9 0 . 1 5 ) (721.03) ( 7 0 8 . 2 1 ) (748.81) ( 6 8 7 . 8 1 ) ( 6 8 0 . 3 6 ) ( 6 8 3 . 9 6 ) ( 6 8 5 . 1 0 ) ( 6 8 6 . 3 8 ) ( 6 8 1 . 4 1 ) ( 6 8 2 . 7 0 ) ( D R Y ) SM W - 3 S M W - 1 6 9 0 . 0 0 7 0 0 . 0 0 7 1 0 . 0 0 DETAILED SITE MAP WHITE STREET LANDFILL GREENSBORO, NORTH CAROLINA AS SHOWN DSB/RDM BSL 1584-98-081C NOVEMBER 2016 4 PHASE II 0 GRAPHIC SCALE200100200SCALE: 1" = 200'OFF-SITE PROPERTY OWNED BY GROUNDWATER CONTOUR LINE MONITORING WELL LOCATIONTHE CITY OF GREENSBORO LEGEND:PROPERTY OFTHE CITY OF GREENSBORO I I - 4 A I I - 5 II-1 I I - 7 I I - 7 B I I - 2 I I - 3 STREAM SAMPLE LOCATION WASTE BOUNDARY (APPROXIMATE) N O R T H B U F F A L O C R E E K NES WELL F L O W P H A S E I I ( C L O S E D M S W L F ) I I - 1 0 I I - 9 I I - 1 1 I I - 4 ( 6 8 1 . 4 6 ) SENTINEL WELL LOCATION ( 7 1 5 . 5 3 ) (686.88) ( 6 9 2 . 5 7 ) ( 6 8 1 . 4 1 ) ( 6 8 2 . 7 0 ) ( 6 8 4 . 5 4 ) I I - 3 B ( 6 8 0 . 3 6 ) ( 6 8 5 . 1 0 ) ( 6 8 3 . 6 1 ) ( 6 8 3 . 6 6 ) (68 3 . 9 6 ) GROUNDWATER ELEVATION (SEPTEMBER 2016)(680.36) Appendix I – Groundwater Sampling Field Data Sheets Location: Project No.: Source Well: Locked?:Yes:x No: Sampled By: feet feet 9.10 feet Purge Method Sample Method 1045 Stop 1140 Purge Rate ml/min Control Settings On: 2.0 sec.1140 Stop 1230 Off: 28.0 sec. Pressure: 25 psi 2" well: height:9.1 x .163 =1.4833 gallons liters x Yes No x *Stabilization Parameters Ferrous Iron = mg/L Time Date Temp pH Conductivity *D.O.*Turbidity DTW 1045 9/27/2016 15.90 1050 9/27/2016 18.85 6.31 2.534 3.52 6.95 16.20 1055 9/27/2016 18.85 6.26 2.354 2.48 1.63 16.30 1100 9/27/2016 18.92 6.22 2.470 1.57 1.09 16.38 1105 9/27/2016 18.93 6.21 2.521 1.03 0.78 16.45 1110 9/27/2016 19.00 6.21 2.545 0.83 0.37 16.50 1115 9/27/2016 19.00 6.20 2.562 0.63 0.38 16.55 1120 9/27/2016 19.03 6.20 2.577 0.56 0.45 16.55 1125 9/27/2016 19.80 6.20 2.590 0.45 0.46 16.60 1130 9/27/2016 19.18 6.20 2.602 0.42 0.39 16.60 1135 9/27/2016 19.22 6.20 2.614 0.38 0.34 16.66 1140 9/27/2016 19.33 6.20 2.618 0.38 0.33 16.65 Final Readings 1140 9/27/2016 19.30 6.20 2.618 0.38 0.33 16.65 * C units mS/cm mg/L NTU Bradley Keyse 55 Minutes Tuesday, September 27, 2016 25.00 GROUNDWATER SAMPLING FIELD DATA Water Level & Well Data White Street Landfill 1584-98-081 4103-II1 Tuesday, September 27, 2016 1140 Overcast 71 *F Height of water column: Bladder Pump Depth to water from measuring point:15.90 Measuring point:Top of Casing Well Purging & Sample Collection Bladder Pump Depth to well bottom from measuring point: Was well purged dry Field Analyses Volume of water in well Volume of water removed 5.5 100 Location:Purge Date: Project No.:Purge Time: Source Well:Sample Date: Sample Time: Locked?:Yes:x No:Weather: Sampled By:Air Temp: feet feet 8.95 feet Purge Method Sample Method Start 1010 Stop 1130 Purge Rate ml/min Control Settings On: 2.0 sec.Start 1130 Stop 1210 Off: 28.0 sec. Pressure: 25 psi 2" well: height:8.95 x .163 =1.45885 gallons liters x Yes No x *Stabilization Parameters The check valve in II-2's pump needs to be repaired/replaced Time Date Temp pH Conductivity *ORP *D.O.*Turbidity DTW 1010 9/28/2016 20.05 1015 9/28/2016 18.81 7.00 1.069 -24.1 3.74 9.73 20.55 1020 9/28/2016 18.82 6.73 0.979 -17.0 2.99 3.12 20.59 7% 1025 9/28/2016 19.24 6.62 0.958 -10.5 3.00 1.51 20.59 1030 9/28/2016 19.73 6.59 0.960 -5.6 2.83 1.24 20.58 1035 9/28/2016 20.48 6.57 0.972 1.4 2.46 0.90 20.59 1040 9/28/2016 20.69 6.57 0.976 4.3 2.30 0.25 20.60 1045 9/28/2016 21.17 6.57 0.977 7.9 2.33 1.17 20.59 1% 1050 9/28/2016 21.11 6.55 0.981 12.0 2.51 0.85 20.60 1055 9/28/2016 21.05 6.54 0.982 14.1 2.58 0.30 20.60 1100 9/28/2016 21.17 6.54 0.983 16.1 2.59 0.72 20.6 1105 9/28/2016 21.01 6.53 0.982 18.3 2.32 0.92 20.61 1110 9/28/2016 21.23 6.53 0.982 20.8 2.4 0.99 20.62 1115 9/28/2016 21.41 6.52 0.984 23.8 2.24 0.87 20.64 1120 9/28/2016 21.78 6.52 0.985 24.9 2.31 0.85 20.64 1125 9/28/2016 21.9 6.51 0.986 25.7 2.04 0.78 20.65 1130 9/28/2016 21.82 6 0.988 26.4 2.03 0.3 20.67 Final Readings 1130 9/28/2016 21.82 6.00 0.988 26 2.03 0.30 20.67 * C units mS/cm mV mg/L NTU Was well purged dry Field Analyses Volume of water in well Volume of water removed 8.0 Bladder Pump 100 Measuring point:Top of Casing Well Purging & Sample Collection Bladder Pump Purge Time Sample Collection Time GROUNDWATER SAMPLING FIELD DATA Water Level & Well Data Depth to water from measuring point:20.05 1130 Sunny 78 *FBradley Keyse Depth to well bottom from measuring point:29.00 Height of water column: Wednesday, September 28, 2016 80 Minutes Wednesday, September 28, 2016 White Street Landfill 1584-98-081 4103-II2 Location:Purge Date: Project No.:Purge Time: Source Well:Sample Date: Sample Time: Locked?:Yes:x No:Weather: Sampled By:Air Temp: feet feet feet Purge Method Sample Method Start 710 Stop 750 Purge Rate ml/min Control Settings On: 2.5 sec.Start 750 Stop 830 Off: 27.5 sec. Pressure: 25 psi 2" well: height:13.33 x .163 =2.17279 gallons liters x Yes No x *Stabilization Parameters The check valve in II-3's pump needs to be repaired/replaced Time Date Temp pH Conductivity *ORP *D.O.*Turbidity DTW 710 9/28/2016 16.67 715 9/29/2016 Adjusting flow rate to 100 mL/min, missed readings 16.95 720 9/30/2016 16.41 5.70 0.464 75.3 1.39 40.70 17.14 725 10/1/2016 16.54 5.68 0.463 70.3 1.12 28.35 17.09 730 10/2/2016 16.64 5.67 0.461 68.1 1.30 17.87 17.09 735 10/3/2016 16.65 5.66 0.459 67.9 1.17 10.92 17.09 740 10/4/2016 16.69 5.65 0.458 68.3 1.20 8.78 17.09 745 10/5/2016 16.71 5.64 0.457 68.8 1.12 5.48 17.09 750 10/6/2016 16.75 5.63 0.457 69.2 1.03 6.3 17.07 Final Readings 750 10/6/2016 16.75 5.63 0.457 69 1.03 6.26 17.07 * C units mS/cm mV mg/L NTU Cleaned out the flow through cell at 710 due to an ant colony being located in the water line, stopping up the influent port of the flow through cell GROUNDWATER SAMPLING FIELD DATA Water Level & Well Data White Street Landfill 1584-98-081 4103-II3 Wednesday, September 28, 2016 750 Sunny 66 *FBradley Keyse Depth to water from measuring point:16.67 40 Minutes Wednesday, September 28, 2016 Depth to well bottom from measuring point:30.00 Height of water column:13.33 Bladder Pump 100 Sample Collection Time Measuring point:Top of Casing Well Purging & Sample Collection Bladder Pump Purge Time Was well purged dry Field Analyses Volume of water in well Volume of water removed 4.0 Location:Purge Date: Project No.:Purge Time: Source Well:Sample Date: Sample Time: Locked?:Yes:x No:Weather: Sampled By:Air Temp: feet feet feet Purge Method Sample Method Start 1510 Stop 1555 Purge Rate ml/min Control Settings On: 3.0 sec.Start 1555 Stop 1635 Off: 27.0 sec. Pressure: 23 psi 2" well: height:10.87 x .163 =1.77181 gallons liters x Yes No x *Stabilization Parameters Time Date Temp pH Conductivity *ORP *D.O.*Turbidity DTW 1510 9/26/2016 14.13 1515 9/26/2016 14.29 1520 9/26/2016 20.61 6.29 0.573 58.0 1.24 1.95 14.34 1525 9/26/2016 20.61 6.29 0.573 58.0 1.24 1.95 14.34 1530 9/26/2016 Pump power issue, missed readings, didn't purge from 1525-1530 1535 9/26/2016 20.46 6.20 0.556 59.7 0.88 0.83 14.36 1540 9/26/2016 20.16 6.18 0.550 60.7 0.57 0.63 14.39 1545 9/26/2016 20.19 6.16 0.546 61.1 0.34 0.47 14.41 1550 9/26/2016 20.74 6.16 0.547 60.7 0.34 0.53 14.43 1555 9/26/2016 20.45 6.16 0.548 61.0 0.29 0.56 14.46 Final Readings 1555 9/26/2016 20.45 6.16 0.548 61 0.29 0.56 14.46 * C units mS/cm mV mg/L NTU Field Analyses Volume of water in well Volume of water removed 3.5 Bladder Pump 100 Sample Collection Time Was well purged dry Measuring point:Top of Casing Well Purging & Sample Collection Bladder Pump Purge Time Depth to well bottom from measuring point:25.00 Height of water column:10.87 Bradley Keyse Depth to water from measuring point:14.13 Ovrecast 75 *F Water Level & Well Data Monday, September 26, 2016 40 Minutes Monday, September 26, 2016 GROUNDWATER SAMPLING FIELD DATA White Street Landfill 1584-98-081 4103-II3B 1555 Location:Purge Date: Project No.:Purge Time: Source Well:Sample Date: Sample Time: Locked?:Yes:x No:Weather: Sampled By:Air Temp: feet feet feet Purge Method Sample Method Start 1350 Stop 1435 Purge Rate ml/min Control Settings On: 2.8 sec.Start 1435 Stop 1515 Off: 27.2 sec. Pressure: 20 psi 2" well: height:15.32 x .163 =2.49716 ,liters x Yes No x *Stabilization Parameters Time Date Temp pH Conductivity *ORP *D.O.*Turbidity DTW 1350 9/28/2016 14.68 1355 9/28/2016 19.24 6.05 1.602 79.1 2.81 2.39 14.89 1400 9/28/2016 18.60 5.97 1.602 81.0 2.57 0.96 14.89 1405 9/28/2016 18.77 5.95 1.608 81.5 2.73 1.01 14.89 1410 9/28/2016 18.89 5.94 1.608 82.4 2.68 0.40 14.89 1415 9/28/2016 18.80 5.92 1.607 83.9 2.52 0.66 14.90 1420 9/28/2016 18.93 5.91 1.608 84.8 2.19 0.28 14.90 1425 9/28/2016 18.83 5.90 1.612 85.6 2.30 0.94 14.91 1430 9/28/2016 18.86 5.90 1.611 86.2 2.30 0.26 14.96 1435 9/28/2016 18.73 5.90 1.611 87.1 2.30 0.47 14.93 Final Readings 1435 9/28/2016 18.73 5.90 1.611 87 2.30 0.47 14.93 * C units mS/cm mV mg/L NTU Was well purged dry Field Analyses Volume of water removed 4.5 Volume of water in well 45 Minutes Wednesday, September 28, 2016 Measuring point:Top of Casing Depth to water from measuring point:14.68 Depth to well bottom from measuring point:30.00 Height of water column: Bladder Pump 100 Sample Collection Time Well Purging & Sample Collection Bladder Pump Purge Time Wednesday, September 28, 2016 15.32 GROUNDWATER SAMPLING FIELD DATA Water Level & Well Data 1435 Overcast 78 *F White Street Landfill 1584-98-081 4103-II4A Bradley Keyse Location:Purge Date: Project No.:Purge Time: Source Well:Sample Date: Sample Time: Locked?:Yes:x No:Weather: Sampled By:Air Temp: feet feet feet Purge Method Sample Method Start 1220 Stop 1305 Purge Rate ml/min Control Settings On: 2.0 sec.Start 1305 Stop 1345 Off: 28.0 sec. Pressure: 15 psi 2" well: height:9.52 x .163 =1.55176 gallons liters x Yes No x *Stabilization Parameters The check valve in II-5's pump needs to be repaired/replaced Time Date Temp pH Conductivity *ORP *D.O.*Turbidity DTW 1220 9/28/2016 6.48 1225 9/28/2016 22.10 6.58 0.747 46.8 3.12 6 6.95 1230 9/28/2016 22.07 6.40 0.786 47.4 2.65 4.18 7.14 1235 9/28/2016 21.94 6.29 0.823 45.9 2.73 2.11 7.28 1240 9/28/2016 22.19 6.27 0.837 45.5 3.01 1.70 7.43 1245 9/28/2016 22.26 6.24 0.846 44.9 2.44 0.58 7.64 1250 9/28/2016 22.27 6.23 0.847 44.0 2.49 2.22 7.77 1255 9/28/2016 21.91 6.23 0.833 43.7 2.34 1.94 7.93 1300 9/28/2016 22.21 6.23 0.821 42.1 2.38 1.81 7.98 1305 9/28/2016 22.56 6.22 0.815 42.2 2.44 3.12 8.01 Final Readings 1305 9/28/2016 22.56 6.22 0.815 42 2.44 3.12 8.01 * C units mS/cm mV mg/L NTU GROUNDWATER SAMPLING FIELD DATA Water Level & Well Data White Street Landfill 1584-98-081 4103-II5 Wednesday, September 28, 2016 1305 Partly Sunny 78 *FBradley Keyse Depth to water from measuring point:6.48 45 Minutes Wednesday, September 28, 2016 Depth to well bottom from measuring point:16.00 Height of water column:9.52 Bladder Pump 100 Sample Collection Time Measuring point:Top of Casing Well Purging & Sample Collection Bladder Pump Purge Time Was well purged dry Field Analyses Volume of water in well Volume of water removed Location:Purge Date: Project No.:Purge Time: Source Well:Sample Date: Sample Time: Locked?:Yes:x No:Weather: Sampled By:Air Temp: Water Level & Well Data feet feet feet Purge Method Sample Method Start 850 Stop 945 Purge Rate ml/min Control Settings On: 2.5 sec.Start 1530 Stop 1620 Off: 27.5 sec. Pressure: 20 psi 2" well: height:2.76 x .163 =0.44988 gallons liters x Yes No x *Stabilization Parameters The check valve in II-6's pump needs to be repaired/replaced, possible redevelopment needed Time Date Temp pH Conductivity *ORP *D.O.*Turbidity DTW 850 9/28/2016 14.24 855 9/28/2016 17.79 6.18 1.229 77.9 3.77 15.31 14.88 900 9/28/2016 17.99 6.34 1.770 41.8 3.41 14.01 14.88 905 9/28/2016 17.80 6.44 2.238 5.0 2.89 15.01 15.12 910 9/28/2016 17.78 6.49 2.368 -20.1 2.78 18.23 15.24 915 9/28/2016 17.70 6.55 2.427 -44.7 3.11 21.36 15.32 920 9/28/2016 17.78 6.50 2.441 -55.2 2.51 21.52 15.22 925 9/28/2016 17.79 6.58 2.463 -63.1 2.33 19.99 15.50 930 9/28/2016 17.81 6.58 2.478 -65.8 2.11 19.00 <15.55 935 9/28/2016 17.93 6.58 2.504 -69.8 2.18 20.75 <15.55 940 9/28/2016 17.86 6.58 2.510 -70.9 2.28 24.49 <15.55 945 9/28/2016 17.92 6.58 2.522 -71.5 2.15 25.60 <15.55 1530 +14.22 1535 57.49 14.61 1540 26.86 14.98 1550 -15.30 1600 Metals sample 16.99 <15.55 1610 15.78 <15.55 Final Readings 945 9/28/2016 17.92 6.58 2.522 -72 2.15 16.99 <15.55 * C units mS/cm mV mg/L NTU GROUNDWATER SAMPLING FIELD DATA White Street Landfill 1584-98-081 4103-II6 Wednesday, September 28, 2016 55 Minutes Wednesday, September 28, 2016 1530 Overcast 78 *FBradley Keyse Depth to water from measuring point:14.24 Depth to well bottom from measuring point:17.00 Height of water column:2.76 Bladder Pump 100 Sample Collection Time Measuring point:Top of Casing Well Purging & Sample Collection Bladder Pump Purge Time Flow rates varied between 60 mL/min and 100mL/min between 0930 and 0945 Was well purged dry Field Analyses Volume of water in well Volume of water removed 5.0 Location:Purge Date: Project No.:Purge Time: Source Well:Sample Date: Sample Time: Locked?:Yes:x No:Weather: Sampled By:Air Temp: feet feet feet Purge Method Sample Method Start 1520 Stop 1605 Purge Rate ml/min Control Settings On: 4 sec.Start 1605 Stop 1645 Off: 26 sec. Pressure: 52 psi 2" well: height:83.75 x .163 =13.65125 gallons liters x Yes No x *Stabilization Parameters Time Date Temp pH Conductivity *ORP *D.O.*Turbidity DTW 1520 9/27/2016 17.25 1525 9/27/2016 17.51 1530 9/27/2016 18.97 8.52 0.465 100.5 3.03 1.07 18.45 1535 9/27/2016 18.63 8.78 0.464 100.2 1.52 1.09 18.96 1540 9/27/2016 19.97 8.97 0.470 97.8 1.30 1.11 19.31 1545 9/27/2016 19.21 9.07 0.477 96.6 0.85 1.07 19.75 1550 9/27/2016 19.17 9.14 0.480 95.6 0.73 1.20 20.15 1555 9/27/2016 18.88 9.18 0.483 95.1 0.63 1.45 20.54 1600 9/27/2016 18.71 9.20 0.483 94.8 0.54 1.16 20.81 1605 9/27/2016 18.66 9.22 0.485 94.1 0.5 1.78 21.1 1645 Final Readings 1605 9/27/2016 18.66 9.22 0.485 94.1 0.50 1.78 21.10 * C units mS/cm mV mg/L NTU GROUNDWATER SAMPLING FIELD DATA Water Level & Well Data White Street Landfill 1584-98-081 4103-II7b Tuesday, September 27, 2016 1605 Sunny 78 *FBradley Keyse Depth to water from measuring point:17.25 45 Minutes Tuesday, September 27, 2016 Depth to well bottom from measuring point:101.00 Height of water column:83.75 Bladder Pump Sample Collection Time Measuring point:Top of Casing Well Purging & Sample Collection Bladder Pump Purge Time Was well purged dry Field Analyses Volume of water in well Volume of water removed 4.5 Location:Purge Date: Project No.:Purge Time: Source Well:Sample Date: Sample Time: Locked?:Yes:x No:Weather: Sampled By:Air Temp: At approx 1650 hrs, the well cap from II-7b was placed on II-7. A new air connection is needed for II-7b feet feet feet Purge Method Sample Method Start 1700 Stop 1740 Purge Rate ml/min Control Settings On: 3.0 sec.Start 740 Stop 1820 Off: 27.0 sec. Pressure: 20 psi 2" well: height:12.91 x .163 =2.10433 gallons liters x Yes No x *Stabilization Parameters Time Date Temp pH Conductivity *ORP *D.O.*Turbidity DTW 1700 1705 9/27/2016 19.06 5.95 0.620 68 0.94 27.58 14.47 1710 9/27/2016 19.22 5.77 0.644 73.0 0.58 23.43 14.53 1715 9/27/2016 19.25 5.72 0.650 76.6 0.54 15.00 14.89 14.89 1720 9/27/2016 18.88 5.66 0.641 85.5 1.00 8.26 14.66 1725 9/27/2016 19.21 5.63 0.648 89.7 0.69 5.86 14.71 1730 9/27/2016 19.17 5.61 0.649 95.1 0.70 3.77 14.73 1735 9/27/2016 19.13 5.6 0.648 99.3 0.79 5.39 14.75 1740 9/27/2016 19.11 5.58 0.646 103.4 0.84 4.31 14.76 Final Readings 1740 9/27/2016 19.11 5.58 0.646 103 0.84 4.31 14.76 * C units mS/cm mV mg/L NTU Cleaned out the flow through cell between the 1715 and 1720 readings Field Analyses Volume of water in well Volume of water removed 4.0 Blader Pump 100 Sample Collection Time Was well purged dry Measuring point:Top of Casing Well Purging & Sample Collection Blader Pump Purge Time Depth to well bottom from measuring point:27.00 Height of water column:12.91 Bradley Keyse Depth to water from measuring point:14.09 Sunny 77 *F Water Level & Well Data Tuesday, September 27, 2016 40 Minutes Tuesday, September 27, 2016 GROUNDWATER SAMPLING FIELD DATA White Street Landfill 1584-98-081 4103-II7 1740 Location:Purge Date: Project No.:Purge Time: Source Well:Sample Date: Sample Time: Locked?:Yes:x No:Weather: Sampled By:Air Temp: feet feet feet Purge Method Sample Method Start 1345 Stop 1420 Purge Rate ml/min Control Settings On: 2.5 sec.Start 1420 Stop 1500 Off: 27.5 sec. Pressure: 25 psi 2" well: height:22.95 x .163 =3.74085 gallons liters x Yes No x *Stabilization Parameters Time Date Temp pH Conductivity *ORP *D.O.*Turbidity DTW 1345 9/26/2016 9.55 1350 9/26/2016 21.72 6.07 2.872 70.6 3.06 1.73 9.77 1355 9/26/2016 21.26 6.07 2.991 59.6 1.82 1.10 9.85 1400 9/26/2016 21.42 6.08 3.040 52.2 1.56 1.33 9.84 1405 9/26/2016 21.27 6.08 3.065 48.9 0.96 1.32 9.85 1410 9/26/2016 21.39 6.07 3.074 49.8 0.81 1.56 9.84 1415 9/26/2016 21.91 6.07 3.102 49.0 0.62 1.76 9.84 1420 9/26/2016 22.22 6.07 3.124 49.8 0.50 1.79 9.81 Final Readings 1420 9/6/2016 22.22 6.07 3.124 50 0.50 1.79 9.81 * C units mS/cm mV mg/L NTU GROUNDWATER SAMPLING FIELD DATA Water Level & Well Data White Street Landfill 1584-98-081 4103-II8 Monday, September 26, 2016 1420 Overcast 73 *FBradley Keyse Depth to water from measuring point:9.55 35 Minutes Monday, September 26, 2016 Depth to well bottom from measuring point:32.50 Height of water column:22.95 Blader Pump 100 Sample Collection Time Measuring point:Top of Casing Well Purging & Sample Collection Blader Pump Purge Time Was well purged dry Field Analyses Volume of water in well Volume of water removed 3.5 Location:Purge Date: Project No.:Purge Time: Source Well:Sample Date: Sample Time: Locked?:Yes:No:X Weather: Sampled By:Air Temp: feet feet feet Purge Method Sample Method Start 725 Stop 805 Purge Rate ml/min Control Settings On: 2 sec.Start 805 Stop 855 Off: 28 sec. Pressure: 25 psi 2" well: height:20.82 x .163 =3.39366 gallons liters x Yes No x *Stabilization Parameters Ferrous Iron = 1.47 mg/L ( 1,470 ug/L) [Collected with Metals Bottle a 0820 hrs] Time Date Temp pH Conductivity *ORP *D.O.*Turbidity DTW 725 9/27/2016 11.68 730 9/27/2016 Missed readings, adjusted flow rate up to 100 mL/min 11.91 735 9/27/2016 17.28 6.08 0.679 39.5 1.64 8.13 12.04 740 9/27/2016 17.11 6.09 0.715 31.6 1.00 12.83 12.16 745 9/27/2016 17.06 6.11 0.739 25.7 0.70 11.04 12.28 750 9/27/2016 17.06 6.12 0.752 22.3 0.51 8.05 12.38 755 9/27/2016 17.01 6.12 0.756 20.8 0.45 5.92 12.48 800 9/27/2016 17.09 6.11 0.756 19.6 0.46 3.21 12.56 805 9/27/2016 17.18 6.11 0.758 18.8 0.38 2.40 12.63 Final Readings 805 9/27/2016 17.18 6.11 0.758 19 0.38 2.40 12.63 * C units mS/cm mV mg/L NTU Field Analyses Volume of water in well Volume of water removed 4.0 Blader Pump 100 Sample Collection Time Was well purged dry Measuring point:Top of Casing Well Purging & Sample Collection Blader Pump Purge Time Depth to well bottom from measuring point:32.50 Height of water column:20.82 Bradley Keyse Depth to water from measuring point:11.68 Overcast 67 *F Water Level & Well Data Tuesday, September 27, 2016 40 Minutes Monday, September 26, 2016 GROUNDWATER SAMPLING FIELD DATA White Street Landfill 1584-98-081 4103-II9 805 Location:Purge Date: Project No.:Purge Time: Source Well:Sample Date: Sample Time: Locked?:Yes:x No:Weather: Sampled By:Air Temp: feet feet feet Purge Method Sample Method Start 1645 Stop 1730 Purge Rate ml/min Control Settings On: 2.5 sec.Start 1730 Stop 1810 Off: 27.5 sec. Pressure: 25 psi 2" well: height:10.81 x .163 =1.76203 gallons liters X Yes No x 8 *Stabilization Parameters Time Date Temp pH Conductivity *ORP *D.O.*Turbidity DTW 1645 9/26/2016 11.99 1650 9/26/2016 20.82 6.35 0.718 47.0 0.71 27.2 12.62 1655 9/26/2016 20.42 6.36 0.715 21.8 0.47 11.2 12.86 1700 9/26/2016 20.04 6.38 0.707 -3.8 0.81 8.9 13.01 1705 9/26/2016 20.24 6.40 0.722 -22.4 0.34 7.9 13.16 1710 9/26/2016 20.25 6.41 0.732 -32.4 0.24 6.8 13.25 1715 9/26/2016 19.94 6.41 0.741 -37.6 0.19 5.3 13.36 1720 9/26/2016 19.88 6.42 0.751 -41.1 0.18 4.8 13.46 1725 9/26/2016 19.82 6.42 0.759 -44.6 0.17 4.3 13.49 1730 9/26/2016 19.82 6.42 0.768 -47.6 0.17 3.7 13.59 Final Readings 1730 9/26/2016 19.82 6.42 0.768 -48 0.17 3.74 13.59 * C units mS/cm mV mg/L NTU Field Analyses Volume of water in well Volume of water removed 5.0 Bladder Pump 100 Sample Collection Time Was well purged dry Measuring point:Top of Casing Well Purging & Sample Collection Bladder Pump Purge Time Depth to well bottom from measuring point:22.80 Height of water column:10.81 Bradley Keyse Depth to water from measuring point:11.99 Overcast 76 *F Water Level & Well Data Monday, September 26, 2016 45 Minutes Monday, September 26, 2016 GROUNDWATER SAMPLING FIELD DATA White Street Landfill 1584-98-081 4103-II12 1730 Location:Purge Date: Project No.:Purge Time: Source Well:Sample Date: Sample Time: Locked?:Yes:x No:Weather: Sampled By:Air Temp: Duplicate sample was collected with MW-13 (time on containers is 0700 hrs) feet feet feet Purge Method Sample Method Start 1330 Stop 1400 Purge Rate ml/min Control Settings On: 2.0 sec.Start 1400 Stop Off: 28.0 sec. Pressure: 25 psi 2" well: height:12.79 x .163 =2.08477 gallons liters x Yes No x *Stabilization Parameters Time Date Temp pH Conductivity *ORP *D.O.*Turbidity DTW 1315 9/27/16 20.21 1320 9/27/16 1325 9/27/16 Pump issues, did not record 1330 9/27/16 20.62 6.88 0.386 28.4 4.73 5.66 20.35 1335 9/27/16 19.50 6.73 0.361 31.4 4.99 3.92 20.61 1340 9/27/16 19.07 6.88 0.354 33.6 4.81 2.37 20.72 1345 9/27/16 18.62 6.62 0.348 36.3 4.89 3.11 21.13 6.36 1350 9/27/16 18.47 6.59 0.344 38.1 4.55 1.77 21.17 1355 9/27/16 18.27 6.56 0.341 40.3 4.64 2.02 21.22 1400 9/27/16 18.06 6.54 0.336 42.2 4.81 1.28 21.3 Final Readings 1400 9/27/2016 18.06 6.54 0.336 42.2 4.81 1.28 21.30 * C units mS/cm mV mg/L NTU GROUNDWATER SAMPLING FIELD DATA Water Level & Well Data White Street Landfill 1584-98-081 4103-MW13 Tuesday, September 27, 2016 1340 Partly Sunny 73 *FBradley Keyse Depth to water from measuring point:20.21 30 Minutes Tuesday, September 27, 2016 Depth to well bottom from measuring point:33.00 Height of water column:12.79 Bladder Pump 100 Sample Collection Time Measuring point:Top of Casing Well Purging & Sample Collection Bladder Pump Purge Time Was well purged dry Field Analyses Volume of water in well Volume of water removed 3.0 Location:Purge Date: Project No.:Purge Time: Source Well:Sample Date: Sample Time: Locked?:Yes:x No:Weather: Sampled By:Air Temp: feet feet feet Purge Method Sample Method Start Stop Purge Rate ml/min Control Settings On: 3.0 sec.Start Stop Off: 27.0 sec. Pressure: 28 psi 2" well: height:34 x .163 =5.542 mg/L gallons liters x 6.5 Yes No x *Stabilization Parameters 20.46 6.88 1405 - Final Readings * C units mS/cm mV mg/L NTU Field Analyses Volume of water in well Volume of water removed Was well purged dry Ferrous Iron: GROUNDWATER SAMPLING FIELD DATA Water Level & Well Data Depth to water from measuring point: Overcast *F White Street Landfill 1584-98-081 4103-MW14 Tuesday, September 27, 2016 Minutes Tuesday, September 27, 2016 Bradley Keyse Measuring point: Depth to well bottom from measuring point: 100 Top of Casing Well Purging & Sample Collection Bladder Pump 34.00 Purge Time Sample Collection Time Bladder Pump Height of water column:34.00 Location:Purge Date: Project No.:Purge Time: Source Well:Sample Date: Sample Time: Locked?:Yes:No:x Weather: Sampled By:Air Temp: feet feet feet Purge Method Sample Method Start 905 Stop 945 Purge Rate ml/min Control Settings On: 2.3 sec.Start 945 Stop 1035 Off: 26.7 sec. Pressure: 25 psi 2" well: height:22.3 x .163 =3.6349 gallons liters x Yes No x *Stabilization Parameters Ferrous Iron = mg/L Time Date Temp pH Conductivity *ORP *D.O.*Turbidity DTW 905 9/27/2016 10.20 910 9/27/2016 18.29 6.55 0.687 47.8 2.73 18.29 10.31 915 9/27/2016 18.06 6.50 0.709 44.2 1.35 10.86 10.38 920 9/27/2016 17.91 6.49 0.725 41.1 0.65 2.09 10.42 925 9/27/2016 17.80 6.47 0.727 39.2 0.40 1.49 10.49 930 9/27/2016 17.84 6.47 0.724 38.0 0.41 1.63 10.49 935 9/27/2016 17.83 6.46 0.720 36.9 0.39 1.35 10.53 940 9/27/2016 17.82 6.45 0.716 35.3 0.28 1.57 10.54 945 9/27/2016 17.86 6.45 0.712 34.2 0.28 1.42 10.57 Final Readings 945 9/27/2016 17.86 6.45 0.712 34 0.28 1.42 10.57 * C units mS/cm mV mg/L NTU Field Analyses Volume of water in well Volume of water removed 4.0 Blader Pump 100 Sample Collection Time Was well purged dry Measuring point:Top of Casing Well Purging & Sample Collection Blader Pump Purge Time Depth to well bottom from measuring point:32.50 Height of water column:22.30 Bradley Keyse Depth to water from measuring point:10.20 Overcast 68 *F Water Level & Well Data Tuesday, September 27, 2016 40 Minutes Tuesday, September 27, 2016 GROUNDWATER SAMPLING FIELD DATA White Street Landfill 1584-98-081 4103-SMW-3 945 Location:Purge Date: Project No.:Purge Time: Source Well:Sample Date: Sample Time: Locked?:Yes:No:x Weather: Sampled By:Air Temp: feet feet feet Purge Method Sample Method Start 1025 Stop 1105 Purge Rate ml/min Control Settings On: 2.5 sec.Start 1110 Stop 1150 Off: 27.5 sec. Pressure: 20 psi 2" well: height:3.54 x .163 =0.57702 Gallons Liters X Yes No x *Stabilization Parameters Time Date Temp pH Conductivity *ORP *D.O.*Turbidity DTW 1025 9/26/2016 11.46 1030 9/26/2016 11.78 1035 9/26/2016 17.62 5.66 0.359 50.1 2.23 6.4 11.88 1040 9/26/2016 17.68 5.68 0.370 38.7 1.06 6.4 11.96 1045 9/26/2016 17.78 5.72 0.369 32.8 0.79 5.2 12.10 1050 9/26/2016 17.88 5.72 0.359 28.7 0.60 5.4 12.23 1055 9/26/2016 17.93 5.71 0.346 27.1 0.48 5.4 12.34 1100 9/26/2016 17.96 5.69 0.336 27.1 0.44 4.5 12.48 1105 9/26/2016 18.00 5.68 0.329 24.2 0.42 3.1 12.58 Final Readings 1105 9/26/2016 18.00 5.68 0.329 24 0.42 3.10 12.58 * C units mS/cm mV mg/L NTU Field Analyses Volume of water in well Volume of water removed 4.0 Blader Pump 100 Sample Collection Time Was well purged dry Measuring point:Top of Casing Well Purging & Sample Collection Blader Pump Purge Time Depth to well bottom from measuring point:15.00 Height of water column:3.54 Bradley Keyse Depth to water from measuring point:11.46 Overcast 69 *F Water Level & Well Data Monday, September 26, 2016 40 Minutes Monday, September 26, 2016 GROUNDWATER SAMPLING FIELD DATA White Street Landfill 1584-98-081 4103-SMW-1 1110 Location:Purge Date: Project No.:Purge Time: Source Well:Sample Date: Sample Time: Locked?:Yes:No:x Weather: Sampled By:Air Temp: feet feet feet Purge Method Sample Method Start 1205 Stop 1250 Purge Rate ml/min Control Settings On: 5 sec.Start 1250 Stop 1330 Off: 25 sec. Pressure: 60 psi 2" well: height:9.45 x .163 =1.54035 gallons liters x Yes No x *Stabilization Parameters Time Date Temp pH Conductivity *ORP *D.O.*Turbidity DTW 1205 11.05 1210 9/26/2016 17.95 6.10 1.019 32.5 3.84 1.60 11.16 1215 9/26/2016 17.83 6.04 1.011 33.7 2.25 2.78 11.20 1220 9/26/2016 17.78 6.02 1.013 33.5 1.11 0.60 11.27 1225 9/26/2016 17.67 5.98 0.927 33.9 0.64 0.49 11.31 1230 9/26/2016 17.67 5.90 0.890 34.8 0.50 0.42 11.33 1235 9/26/2016 17.66 5.87 0.862 37.5 0.40 0.21 11.40 1240 9/26/2016 17.59 5.85 0.856 38.6 0.35 0.34 11.43 1245 9/26/2016 17.60 5.84 0.848 40.7 0.31 0.40 11.49 1250 9/26/2016 17.54 5.83 0.845 42.3 0.30 0.32 11.54 Final Readings 1250 9/26/2016 17.54 5.83 0.845 42 0.30 0.32 11.54 * C units mS/cm mV mg/L NTU GROUNDWATER SAMPLING FIELD DATA Water Level & Well Data White Street Landfill 1584-98-081 4103-SMW-4 Monday, September 26, 2016 1250 Overcast 71 *FBradley Keyse Depth to water from measuring point:11.05 45 Minutes Monday, September 26, 2016 Depth to well bottom from measuring point:20.50 Height of water column:9.45 Blader Pump 90 Sample Collection Time Measuring point:Top of Casing Well Purging & Sample Collection Blader Pump Purge Time Was well purged dry Field Analyses Volume of water in well Volume of water removed 3.5 Location:Purge Date: Project No.:Purge Time: Source Well:Sample Date: Sample Time: Locked?:Yes:x No:Weather: Sampled By:Air Temp: feet feet 0.00 feet Purge Method Sample Method Start Stop Purge Rate ml/min Control Settings On:sec.Start Stop Off:sec. Pressure:psi 2" well: height:0 x .163 =0 gallons liters Yes No *Stabilization Parameters Time Date Temp pH Conductivity *ORP *D.O.*Turbidity DTW Final Readings 1210 9/26/2016 21.60 7.22 293.000 * C units mS/cm Measuring point: Monday, September 26, 2016 Monday, September 26, 2016 Height of water column: Sample Collection Time Depth to well bottom from measuring point: Well Purging & Sample Collection Purge Time Field Analyses Volume of water in well Volume of water removed Was well purged dry Blank Water Level & Well Data Depth to water from measuring point: 1210 1584-98-081 White Street Landfill 4112-SW1 Gary Simcox Sunny 75 *F Summit Avenue Bridge Location:Purge Date: Project No.:Purge Time: Source Well:Sample Date: Sample Time: Locked?:Yes:x No:Weather: Sampled By:Air Temp: feet feet 0.00 feet Purge Method Sample Method Start Stop Purge Rate ml/min Control Settings On:sec.Start Stop Off:sec. Pressure:psi 2" well: height:0 x .163 =0 gallons liters x Yes No x *Stabilization Parameters Time Date Temp pH Conductivity *ORP *D.O.*Turbidity DTW Final Readings 1130 9/26/2016 20.60 6.75 214.000 * C units mS/cm Depth to well bottom from measuring point: Monday, September 26, 2016 Monday, September 26, 2016 White Street Landfill 1584-98-081 4112-SW2 White Street and Nealtown Road Height of water column: Measuring point: Well Purging & Sample Collection Purge Time GROUNDWATER SAMPLING FIELD DATA Water Level & Well Data Depth to water from measuring point: 1505 Cloudy 75 *FGary Simcox Sample Collection Time Was well purged dry Field Analyses Volume of water in well Volume of water removed Location:Purge Date: Project No.:Purge Time: Source Well:Sample Date: Sample Time: Locked?:Yes:No:Weather: Sampled By:Air Temp: feet feet feet Purge Method Sample Method Start Stop Purge Rate ml/min Control Settings On:sec.Start Stop Off:sec. Pressure:psi 2" well: height:0 x .163 =0 gallons liters Yes No x *Stabilization Parameters Time Date Temp pH Conductivity *ORP *D.O.*Turbidity DTW Final Readings 1345 9/26/2016 23.80 7.21 439.000 * C units mS/cm Was well purged dry Field Analyses Volume of water in well Volume of water removed GROUNDWATER SAMPLING FIELD DATA Water Level & Well Data Depth to water from measuring point: 1345 75 *F White Street Landfill Monday, September 26, 2016 Monday, September 26, 2016 1584-98-081 4112-SW3 Gary Simcox Cloudy Waste Water Treatment Plant Depth to well bottom from measuring point: Purge Time Measuring point: Sample Collection Time Well Purging & Sample Collection Height of water column:0.00 Location:Purge Date: Project No.:Purge Time: Source Well:Sample Date: Sample Time: Locked?:Yes:x No:Weather: Sampled By:Air Temp: feet feet feet Purge Method Sample Method Start Stop Purge Rate ml/min Control Settings On:sec.Start Stop Off:sec. Pressure:psi 2" well: height:0 x .163 =0 gallons liters Yes No *Stabilization Parameters Time Date Temp pH Conductivity *ORP *D.O.*Turbidity DTW Final Readings 1245 9/26/2016 22.50 7.30 412.000 * C units mS/cm GROUNDWATER SAMPLING FIELD DATA Water Level & Well Data 1245 Cloudy 75 *F White Street Landfill Monday, September 26, 2016 1584-98-081 4112-SW4 Gary Simcox Rankin Mill Road Bridge Sample Collection Time Was well purged dry Purge Time Volume of water in well Field Analyses Monday, September 26, 2016 Measuring point: Depth to water from measuring point: Depth to well bottom from measuring point: Height of water column:0.00 Volume of water removed Well Purging & Sample Collection Location:Purge Date: Project No.:Purge Time: Source Well:Sample Date: Sample Time: Locked?:Yes:x No:Weather: Sampled By:Air Temp: feet feet feet Purge Method Sample Method Start Stop Purge Rate gpm Control Settings On:sec.Start Stop Off:sec. Pressure:psi 2" well: height:0 x .163 =0 gallons x liters Yes No x *Stabilization Parameters Time Date Temp pH Conductivity *ORP *D.O.*Turbidity DTW Final Readings 1100 9/26/2016 22.60 7.34 427.000 * C units mS/cm Was well purged dry Field Analyses Volume of water in well Volume of water removed 0.0 GROUNDWATER SAMPLING FIELD DATA Water Level & Well Data Depth to water from measuring point: 1100 75 *F White Street Landfill Monday, September 26, 2016 Tuesday, September 06, 2016 1584-98-081 4112-SW5 Gary Simcox Cloudy Below monitor well II-3 Depth to well bottom from measuring point: Purge Time Measuring point: Sample Collection Time Well Purging & Sample Collection Height of water column:0.00 Appendix II – Laboratory Analytical Reports Appendix III – Time vs Concentration Charts Appendix IV – CAP Monitoring Laboratory Analytical Reports and Summary Tables AOC II-2 Wells Sample Locations NC SWSL NCAC 2L Well ID II-2 II-2 II-2 II-2 II-2 II-2 II-2 II-2 II-2 II-2 II-2 II-2 II-2 SMW-1 SMW-1 SMW-1 SMW-1 SMW-1 SMW-1 SMW-1 SMW-1 SMW-1 SMW-1 SMW-1 SMW-1 SMW-1 Std. Date Collected 4/1/10 10/6/10 5/10/11 10/12/11 10/31/12 4/30/13 4/30/13 4/24/14 10/3/14 4/15/15 10/5/15 4/19/16 9/28/16 8/2/10 10/11/10 10/7/11 4/19/12 10/25/12 5/3/13 9/17/13 4/24/14 10/7/14 4/15/15 10/7/15 4/19/16 9/26/16 units (ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L) 1,1-Dichloroethane 16 17 16 12 11 14 11 10 8.4 7.1 ND 9.5 8.6 ND ND ND ND ND ND ND ND ND ND ND ND ND 5 6 1,1-Dichloroethene 0.45 J 0.49J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 5 7 1,2-Dichloroethane ND ND ND ND ND 0.40 J ND ND ND ND 0.98 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 1 70 1,2-Dichlorobenzene ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 5 20 1,4-Dichlorobenzene 0.61 J 0.54 J 0.87 J ND 0.94 J 1.2 1.5 2.0 1.3 1.3 ND 2.5 2.2 ND ND ND ND ND ND ND ND ND ND ND ND ND 1 6 4-Methyl 2-Pentanone ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 100 ns Acetone ND 5.2 J ND ND ND ND ND ND ND ND ND ND ND ND 1.5 J ND ND ND ND ND ND ND ND ND ND ND 100 6,000 Benzene 1.2 0.67 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 1 1 Chlorobenzene 0.62 J 0.74 J 0.78 J 0.99 J 0.74 J 0.88 J 0.89 J 1.0 J 0.72 J 0.64 J ND 0.87 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND 3 50 Chloroethane ND 0.57 J ND ND ND ND 0.47 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 10 3,000 Chloromethane ND ND ND ND ND ND ND ND ND ND 1.3 1.3 ND 0.40 J ND ND ND ND ND ND ND ND ND ND ND ND 1 3 cis 1,2-dichloroethene 20 23 21 21 23 29 26 26 21 19 ND 21 20 ND ND ND ND ND ND ND ND ND ND ND ND ND 5 70 Tetrachloroethene 4.2 3.6 2.9 ND 2.7 2.4 2.1 2.7 1.3 0.85 J ND 1.4 0.69J ND ND ND ND ND ND ND ND ND ND ND ND ND 1 0.7 Toluene ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 1 600 Trichloroethene 4.1 3.6 3.3 ND 2.9 3.2 2.4 2.5 1.2 1.2 ND 2.0 1.4 ND ND ND ND ND ND ND ND ND ND ND ND ND 1 3 Tetrahydrofuran ND ND 10 ND ND 2.7 ND ND ND ND ND NA NA NA NA NA NA NA ND ND ND ND ND ND NE NS Trichlorofluoromethane 2.7 2.3 1.2 ND 0.88 J 0.73 J 0.48 J 0.55 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 1 2,000 Vinyl Chloride 4.8 5.4 5.1 3.5 2.2 5.6 3.6 4.6 2.6 2.5 ND 4.2 3.1 ND ND ND ND ND ND ND ND ND ND ND ND ND 1 0.03 Xylenes (total)ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 5 500 ND = compound not detected J = Parameters are estimated values between the detection limit and the NC SWSL. ns = no corresponding NCAC 2L groundwater quality standard NC SWSL= North Carolina Solid Waste Section Limit (minimum detection limits) NCAC 2L std. = 15A North Carolina Administrative Code 2L .0200, Groundwater Quality Standards for Class GA groundwater Quantities highlighted in orange were detected above the 2L standards NA = Parameter not analyzed during the specified event S&ME PROJECT NO. 1584-98-081C TABLE IV-1A SUMMARY OF GROUNDWATER ANALYTICAL RESULTS DETECTED VOLATILE ORGANIC COMPOUNDS SELECT WELLS LOCATED WITHIN WHITE STREET LANDFILL - PHASE II GREENSBORO, NORTH CAROLINA T:\Projects\1998\ENV\081C White Street Landfill (2014)\2016 Compliance Monitoring\Fall 2016\Phase 2\Appendix IV CAP Tables.xlsx AOC II-6 Wells Sample Locations NC SWSL NCAC 2L Well ID II-6 II-6 II-6 II-6 II-6 II-6 II-6 II-6 II-6 II-6 II-6 II-6 II-6 II-6 SMW-4 SMW-4 SMW-4 SMW-4 SMW-4 SMW-4 SMW-4 SMW-4 SMW-4 SMW-4 SMW-4 SMW-4 Std. Date Collected 4/1/10 10/6/10 5/9/11 10/10/11 4/19/12 10/26/12 4/30/13 4/30/13 4/23/14 10/2/14 4/14/15 10/6/15 4/19/16 9/28/16 8/2/10 10/11/10 4/19/12 10/25/12 5/3/13 9/17/13 4/24/14 10/7/14 4/15/15 10/7/15 4/18/16 9/26/16 units (ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L) 1,1-Dichloroethane ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 5 6 1,1-Dichloroethene ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 5 7 1,2-Dichlorobenzene 0.43 J 0.51 J ND ND ND 0.50 J ND 0.50 J ND 0.46 J ND ND ND 0.55J ND ND ND ND ND ND ND ND ND ND ND ND 5 20 1,4-Dichlorobenzene 3.4 4.7 ND 4.0 0.51 J 4.8 ND 3.2 ND 3.8 ND 2.8 0.72 J 4.3 ND ND ND ND ND ND ND ND ND ND ND ND 1 6 4-Methyl 2-Pentanone ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 100 ns Acetone 5.4 J ND ND ND ND 9.8 J ND 7.1 J ND 16 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 100 6,000 Benzene 1.6 2.2 ND 2.4 ND 2.3 ND 1.6 ND 2.0 ND 1.4 ND 2.1 ND ND ND ND ND ND ND ND ND ND ND ND 1 1 Chlorobenzene 4.5 7.4 ND 6.8 0.71 J 5.7 ND 4.3 ND 5.8 ND 3.6 0.73 J 6.4 ND ND ND ND ND ND ND ND ND ND ND ND 3 50 Chloroethane ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 10 3,000 Chloromethane ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 1 3 Naphthalene NA NA NA NA NA NA NA NA NA 2.5 J ND ND ND 1.5J NA NA NA NA NA NA NA ND ND ND ND ND 10 6 cis 1,2-dichloroethene ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 5 70 Tetrachloroethene ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 1 0.7 Toluene ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 1 600 Trichloroethene ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 1 3 Tetrahydrofuran NA NA NA 34 4.0 23 ND 18 ND 29 1 32 ND ND NA NA NA NA NA NA ND ND ND ND ND ND NE NS Trichlorofluoromethane ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 1 2,000 Vinyl Chloride ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 1 0.03 Xylenes (total)1.8 J 4.0 J ND 5.5 ND 2.6 J ND 1.8 J ND 1.9 J ND 0.77 J ND 1.4J ND ND ND ND ND ND ND ND ND ND ND ND 5 500 ND = compound not detected J = Parameters are estimated values between the detection limit and the NC SWSL. ns = no corresponding NCAC 2L groundwater quality standard NC SWSL= North Carolina Solid Waste Section Limit (minimum detection limits) NCAC 2L std. = 15A North Carolina Administrative Code 2L .0200, Groundwater Quality Standards for Class GA groundwater Quantities highlighted in orange were detected above the 2L standards TABLE IV-1B SUMMARY OF GROUNDWATER ANALYTICAL RESULTS DETECTED VOLATILE ORGANIC COMPOUNDS SELECT WELLS LOCATED WITHIN WHITE STREET LANDFILL - PHASE II GREENSBORO, NORTH CAROLINA S&ME PROJECT NO. 1584-98-081C T:\Projects\1998\ENV\081C White Street Landfill (2014)\2016 Compliance Monitoring\Fall 2016\Phase 2\Appendix IV CAP Tables.xlsx Southern E-Buffer Wells Sample Locations NC SWSL NCAC 2L Well ID II-1 II-1 II-1 II-1 II-1 II-1 II-1 II-1 II-1 II-1 II-1 II-1 II-1 II-1 Std Date Collected 4/1/10 10/6/10 5/9/11 10/10/11 4/17/12 10/26/12 4/30/13 9/11/13 4/24/14 10/6/14 4/14/15 10/7/15 4/18/16 9/27/16 units (ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L) 1,1-Dichloroethane 2.3 J 3.0 J 1.1 J 1.7 J 1.2 J 1.6 J 0.77 J 0.89 J 0.79 J 0.53 J 0.45 J 0.86 J 0.46 J 0.76J 5 6 1,1-Dichloroethene ND ND ND ND ND ND ND ND ND ND ND ND ND ND 5 7 1,2-Dichlorobenzene ND 0.43 J ND ND ND 0.41 J ND ND ND 0.61 J ND ND 0.55 J 0.57J 5 20 1,4-Dichlorobenzene 6.5 7.5 4.0 7.6 4.6 7.7 3.4 4.3 5.6 8.2 5.4 7.6 7.9 8.6 1 6 4-Methyl 2-Pentanone 5.1 J ND ND ND ND ND ND ND ND ND ND ND ND ND 100 ns Acetone ND ND ND ND ND 3.3 J ND 4.0 J ND ND ND ND ND ND 100 6,000 Benzene 1.1 1.2 0.78 J 0.98 J 0.91 J 1.5 0.45 J 1.1 ND 1.1 0.73 J 1.2 0.78 J ND 1 1 Chlorobenzene 2.2 J 3.2 1.2 J 4.0 2.0 3.5 1.4 J 2.9 J 3.0 4.3 2.0 3.4 3.3 4.3 3 50 Chloroethane 0.95 J 1.6 J ND ND ND ND ND ND ND ND ND 0.94 J ND ND 10 3,000 Chloromethane ND ND ND ND ND ND ND ND ND ND ND ND ND ND 1 3 cis 1,2-dichloroethene 3.3 J 4.2 J 0.88 J ND 2.1 J 3.0 J 1.3 J 2.6 J 0.43 J 1.1 J ND ND ND ND 5 70 Tetrachloroethene ND ND ND ND ND ND ND ND ND ND ND ND ND ND 1 0.7 Toluene ND ND ND ND ND ND ND ND ND ND ND ND ND ND 1 600 Trichloroethene 0.53 J 0.48 J ND ND ND ND ND ND ND ND ND ND ND ND 1 3 Tetrahydrofuran NA NA NA 11 4.4 10 5.5 6.5 14 13 8.2 21 7.1 ND NE NS Trichlorofluoromethane ND ND ND ND ND ND ND ND ND ND ND ND ND ND 1 2,000 Vinyl Chloride 0.90 J 1.4 ND ND 0.52 J 1.3 ND 0.43 J ND ND ND ND ND ND 1 0.03 Xylenes (total)ND ND ND ND ND ND ND ND ND ND ND ND ND ND 5 500 ND = compound not detected J = Parameters are estimated values between the detection limit and the NC SWSL. ns = no corresponding NCAC 2L groundwater quality standard NC SWSL= North Carolina Solid Waste Section Limit (minimum detection limits) NCAC 2L std. = 15A North Carolina Administrative Code 2L .0200, Groundwater Quality Standards for Class GA groundwater Quantities highlighted in orange were detected above the 2L standards S&ME PROJECT NO. 1584-98-081C TABLE IV-1C SUMMARY OF GROUNDWATER ANALYTICAL RESULTS DETECTED VOLATILE ORGANIC COMPOUNDS SELECT WELLS LOCATED WITHIN WHITE STREET LANDFILL - PHASE II GREENSBORO, NORTH CAROLINA T:\Projects\1998\ENV\081C White Street Landfill (2014)\2016 Compliance Monitoring\Fall 2016\Phase 2\Appendix IV CAP Tables.xlsx Northern Ebuffer Wells Sample Locations NC SWSL NCAC 2L Well ID II-9 II-9 II-9 II-9 II-9 II-9 II-9 II-9 II-9 II-9 II-9 II-9 SMW-3 SMW-3 SMW-3 SMW-3 SMW-3 SMW-3 SMW-3 SMW-3 SMW-3 SMW-3 SMW-3 SMW-3 SMW-3 SMW-3 Std. Date Collected 4/29/10 10/7/11 4/19/12 10/25/12 4/30/13 9/18/13 4/24/14 10/7/14 10/7/14 10/7/15 4/18/16 9/27/16 8/2/10 10/11/10 10/7/11 4/19/12 10/23/12 5/3/13 9/18/13 4/24/14 10/7/14 4/15/15 10/8/15 4/18/16 4/18/16 9/27/16 units (ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L) 1,1-Dichloroethane ND 5.8 6.9 9.6 7.9 9.9 ND 6.5 5.7 5.8 0.42 J 4.6J 4.2 J 3.8 J 0.88 J 5.4 5.0 4.5 J 5.6 5.8 5.6 6.2 3.7 J 5.5 5.5 5.6 5 6 1,1-Dichloroethene ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 5 7 1,2-Dichlorobenzene ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 5 20 1,4-Dichlorobenzene ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 1 6 4-Methyl 2-Pentanone ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 100 ns Acetone ND ND ND ND ND ND ND ND ND ND ND ND 3.0 J ND ND ND ND ND ND ND ND ND ND ND ND ND 100 6,000 Benzene ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 1 1 Chlorobenzene ND ND ND ND ND 0.52 J ND 0.62 J ND 0.60 J ND 0.40J ND ND ND ND ND ND ND ND ND ND 1.9 J ND ND ND 3 50 Chloroethane ND ND ND ND ND 0.81 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 10 3,000 Chloromethane ND ND ND ND ND ND ND ND ND ND ND ND 0.44 J 0.61 J ND ND ND ND ND ND ND ND ND ND ND ND 1 3 cis 1,2-dichloroethene 11 16 16 24 23 26 ND 17 14 13 0.83 J 8.0 6.9 7.8 1.2 J 12 12 14 15 14 16 15 7.6 12 12 12 5 70 Tetrachloroethene ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 0.44 J ND ND ND ND ND ND 1 0.7 Toluene ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 1 600 Trichloroethene ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 0.40 J 0.60 J ND ND ND ND ND ND 1 3 Tetrahydrofuran NA NA NA NA NA NA NA ND ND ND ND ND NA NA NA NA NA NA NA ND ND ND ND ND ND ND NE NS Trichlorofluoromethane ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 1 2,000 Vinyl Chloride 0.66 J 0.69 J 1.0 J 2.4 0.79 J 4.0 ND 2.6 ND 2.2 ND 1.4 0.49 J 0.68 J ND ND ND 0.74 J 1.3 J 1.7 2.0 1.6 0.72 J 1.6 1.6 1.5 1 0.03 Xylenes (total)ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 5 500 ND = compound not detected J = Parameters are estimated values between the detection limit and the NC SWSL. ns = no corresponding NCAC 2L groundwater quality standard NC SWSL= North Carolina Solid Waste Section Limit (minimum detection limits) NCAC 2L std. = 15A North Carolina Administrative Code 2L .0200, Groundwater Quality Standards for Class GA groundwater Quantities highlighted in orange were detected above the 2L standards TABLE IV-1D SUMMARY OF GROUNDWATER ANALYTICAL RESULTS DETECTED VOLATILE ORGANIC COMPOUNDS SELECT WELLS LOCATED WITHIN WHITE STREET LANDFILL - PHASE II GREENSBORO, NORTH CAROLINA S&ME PROJECT NO. 1584-98-081C T:\Projects\1998\ENV\081C White Street Landfill (2014)\2016 Compliance Monitoring\Fall 2016\Phase 2\Appendix IV CAP Tables.xlsx AOC II-7 Wells Sample Locations NC SWSL NCAC 2L Well ID II-7 II-7 II-7 II-7 II-7 II-7 II-7 II-7 II-7 II-7 II-7 II-7 II-7 II-7 II-7B II-7B II-7B II-7B II-7B II-7B II-7B II-7B II-7B II-7B II-7B II-7B II-7B std Date Collected 4/1/10 10/6/10 5/9/11 10/13/11 4/17/12 10/31/12 4/30/13 9/13/13 4/24/14 10/2/14 4/14/15 10/6/15 4/19/16 9/27/16 4/1/10 10/6/10 10/13/11 4/17/12 10/31/12 4/30/13 9/13/13 4/24/14 10/2/14 4/14/15 10/6/15 4/20/16 9/27/16 units (ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L)(ug/L) 1,1-Dichloroethane 1.1 J 0.42 J ND ND 0.65 J 0.79 J ND ND ND ND ND ND ND ND ND ND ND 0.64 J 0.85 J 0.90 J ND 0.54 J ND 0.89 J 0.79 J 1.2 J 0.63J 5 6 1,1-Dichloroethene ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 5 7 1,2-Dichlorobenzene ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 5 20 1,4-Dichlorobenzene 0.53 J ND ND ND 0.42 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 1 6 4-Methyl 2-Pentanone ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 100 ns Acetone 2.0 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 2.2 J ND ND ND ND ND ND 100 6,000 Benzene 0.64 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 1 1 Chlorobenzene ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 3 50 Chloroethane ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 10 3,000 Chloromethane ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 1 3 cis 1,2-dichloroethene 3.6 J ND ND ND 0.79 J 0.48 J ND ND ND ND ND ND ND ND ND ND ND 0.58 J 0.44 J ND ND ND ND ND ND ND ND 5 70 Tetrachloroethene 0.56 J ND ND ND ND 0.52 J ND ND ND ND ND ND ND ND 0.57 J 0.57 J ND 0.41 J 0.52 J 0.48 J ND 0.51 J ND ND ND 0.44 J 0.44 J 1 0.7 Toluene 1.0 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 1 600 Trichloroethene ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 1 3 Tetrahydrofuran NA NA NA ND ND ND ND ND ND ND 0.40 J ND ND ND NA NA ND 130 170 150 18 140 ND 5.6 ND 50 50 NE NS Trichlorofluoromethane ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 1 2,000 Vinyl Chloride 0.80 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 1 0.03 Xylenes (total)ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 5 500 ND = compound not detected J = Parameters are estimated values between the detection limit and the NC SWSL. ns = no corresponding NCAC 2L groundwater quality standard NC SWSL= North Carolina Solid Waste Section Limit (minimum detection limits) NCAC 2L std. = 15A North Carolina Administrative Code 2L .0200, Groundwater Quality Standards for Class GA groundwater Quantities highlighted in orange were detected above the 2L standards S&ME PROJECT NO. 1584-98-081C TABLE IV-1E SUMMARY OF GROUNDWATER ANALYTICAL RESULTS DETECTED VOLATILE ORGANIC COMPOUNDS SELECT WELLS LOCATED WITHIN WHITE STREET LANDFILL - PHASE II GREENSBORO, NORTH CAROLINA T:\Projects\1998\ENV\081C White Street Landfill (2014)\2016 Compliance Monitoring\Fall 2016\Phase 2\Appendix IV CAP Tables.xlsx