3 Groundwater Monitoring

Transcription

1 Groundwater Monitoring Dear On Terracon Consultants, Inc. is pleased to submit an electronic 2013 Semi-Annual Groundwater Monitoring Report for the Ashdown If have questions concerning the subject report, please feel free to contact me or David Jaros at 1) Sincerely, Quin Baber, P.G. Environmental Department Manager Enclosure: Firs/ Half 2013 Groundwater Monitoring Report (CD) Certification Page cc: Brandon Ayers, Domtar A.W. LLC (wlone CD & one hardcopy report) Terracon Consultants, Inc. p [501] South F 1501} Bryant, AR terrae on.com

2 nm uu<>t'... Monitoring Report Class 3N Landfills Prepared for Corp. Class 3N Landfills Ashdown, Arkansas For Submittal to Arkansas Department Environmental Solid Waste Division l certify I am a qualified groundwater scientist who has received a baccalaureate or postgraduate degree in the natural sciences. I have sufficient training and experience in groundwater hydrology and related fields, as demonstrated by state registration and completion of accredited university courses, which enable me to make sound professional judgments regarding groundwater monitoring and contaminant fate and transport. The statistics herein are based upon the statistical program SANITAS for GroundwaterTM that is guided relevant EPA Guidance, ASTM Standards, and in accordance with Arkansas Department Environmental Quality Solid Waste Regulation 22. I further certify that this report was prepared by me or by a subordinate working under my direction.

3 14, 3 of Environmental Quality Dear On Ashdown Class 3N Landfill and as required by Regulation ( c)( 1 ), Terracon Consultants Inc. (Terracon), is presenting you with this letter as notification of Significant Increases (SS!s) for sulfate, TDS, barium, and chloride at MW-2; lead at sulfate, and TDS at MW-5; and sulfate at MW-6. These SSis occurred during 3 Semi-Annual Groundwater Monitoring event conducted on May 31, ''"""T"'n in previous reports, the model for the site determined from previous investigations,.,"'"'"'',"'"' in detail in the Second Half 2006 report, and given the lithology, the insitu conductivity values for the clay units underlying the site, and the confined to semiof the uppermost aquifer underlying the site, it appears unlikely that the SSis observed were caused the landfills. Demonstration (ASD) dated April 21, 2008 was submitted to the ADEQ in ADEQ Regulation (c) concerning sulfate, TDS, and chloride. However, 1'"\Ui..-Y has not yet responded to the ASD submittal. Therefore, Domtar will continue with detection at the Ashdown facility until such time as the ADEQ has reviewed and commented on the ASD. It should be noted that barium at MW-2 (0.68 mg/1) was below the Water Standard of 2 mg/1. Lead at MW-3 ( mg/1) was below the Primary Standard of mg/1. the Facility's Condition No. 25, an extended list of parameters was the First Half Arsenic and chromium were detected; therefore, these be added to the detection monitoring list. noted that total dioxin equivalence was sampled during this event. All dioxins were as non-detect with the exception of "J" values or interference. "J" values are estimated between the method detection level (MDL) and the practical quantitation level Therefore, total dioxin equivalence will not be added to the detection monitoring list. Terracon Consultants, Inc South Bryant, AR P [501} F [501] !erracon.com

4 questions or comments, please do not hesitate to contact me or David Jaros at Cc: Brandon Ayers, Domtar A. W. LLC

5 First Half 2013 Groundwater Monitoring Report DOMTAR A.W. LLC CLASS 3N LANDFILLS SOLID WASTE PERMITS 0211-S3N-R2 and 296-S3N AFIN TERRACON PROJECT B August 14, 2013 Prepared for: Domtar A.W. LLC Ashdown Class 3N Landfill Ashdown, Arkansas Prepared by: Terracon Consultants, Inc. Little Rock, Arkansas

6 TABLE OF CONTENTS Page 1.0 INTRODUCTION Site Location Site Groundwater Monitoring System GROUNDWATER SAMPLING Water Level Determination Well Evacuation Equipment Decontamination Procedure Sample Extraction Field Testing Field QA/QC Procedures Handling/Transport/Custody Sample Preservation FIRST HALF 2013 SEMI-ANNUAL SAMPLING EVENT Groundwater Elevation & Flow Direction Groundwater Quality Outlier Determination Statistical Evaluation Results of the Statistical Evaluation Comparison to Established Water Quality Standards QA/QC Comparison CONCLUSIONS TABLES Table 1 Table 2 Table 3 FIGURES Figure 1 Figure 2 APPENDIX A APPENDIX B APPENDIX C APPENDIX D Constituents for Detection Monitoring Field Measurements Groundwater Quality Results Site Location Map Site Map and Potentiometric Surface Map Groundwater Sampling Records Laboratory Analytical Results Key to Parameter Abbreviations/Statistical Database Revision Summary Statistical Evaluation i

7 FIRST HALF 2013 GROUNDWATER MONITORING REPORT DOMTAR A.W. LLC CLASS 3N LANDFILLS ADEQ SOLID WASTE PERMITS 0211-S3N-R2, 0244-S3N-R1, and 296-S3N TERRACON PROJECT B 1.0 INTRODUCTION Domtar A.W. LLC (Domtar) operates three active Class 3N Solid Waste Landfills at its Ashdown, Arkansas facility. The active solid waste permits are as follows: Landfill Name Permit Number Date Permit Issued/Date of Last Modification Mill Trash Landfill 0244-S3N-R1 September 11, 1987/September 25, 1991 Paper Sludge Landfill 0211-S3N-R2 September 23, 1983/June 9, 1998 New Lime Waste Landfill 296-S3N February 9, 2000/None All of the Domtar Facility Class 3N Solid Waste Landfills are monitored under the same groundwater monitoring system and Sampling and Analysis Plan. The solid waste permits for the Paper Sludge Landfill (Permit # 0211-S3N-R2) and the New Lime Waste Landfill (296-S3N) contain detailed permit conditions regarding the sampling and analysis of groundwater at the site. The Domtar Facility Solid Waste Landfill groundwater monitoring system consists of five wells. This report covers the First Half 2013 detection monitoring event conducted on May 31, This report was prepared by Terracon Consultants Inc. (Terracon). 1.1 Site Location The Domtar Class 3N Landfills are located in the Southeast ¼ of Section 8 and the Northeast ¼ of Section 17, Township 3 South, Range 29 West, in Little River County, Arkansas (FIGURE 1). Domtar currently operates a paper mill at this facility, and as part of the manufacturing process, various waste streams are generated including general mill trash (Permit No. 244-S3N-R1), primary sludge (Permit No. 211-S3N-R2), and lime waste (Permit No. 296-S3N). The primary sludge landfill is approximately 46 acres, the mill trash landfill is 11.5 acres, and the lime waste landfill is 13 acres in size. 1.2 Site Groundwater Monitoring System There are currently five monitoring wells, MW-2, MW-3R, MW-4, MW-5, and MW-6, surrounding Domtar s Class 3N Landfills (FIGURE 2). Reliable Responsive Convenient Innovative 1

8 First Half 2013 Groundwater Monitoring Report Domtar A.W. LLC Class 3N Landfill Ashdown, Arkansas August 14, 2013 Terracon Project No B 2.0 GROUNDWATER SAMPLING The First Half 2013 semi-annual sampling event was conducted at the Domtar Ashdown Landfills on May 31, Terracon representatives collected samples from the five monitoring wells, MW-2, MW-3R, MW-4, MW-5, and MW-6. The procedures for obtaining groundwater samples, parameters analyzed, and sample preservation and handling are discussed in the following sections. 2.1 Water level determination Prior to evacuating each well for sampling, the depth to standing water was measured using an electronic water level probe. The measurements were taken to the nearest 0.01 foot from the top of the well casing and this information was utilized to calculate the volume of water in the well. Since non-dedicated equipment was used to obtain water levels, procedures were instituted to insure the samples were not contaminated. The electronic water level probe is constructed of inert materials and was decontaminated with distilled water prior to use at each well. 2.2 Well Evacuation The water in a well prior to purging may not be representative of in-situ groundwater quality. Therefore, the Terracon field representatives purged a minimum of three casing volumes from the well at a rate that did not excessively agitate the recharge water. This procedure insured that all well water was replaced by fresh formation water upon completion of the process. A Grundfos Redi-Flo 2 submersible pump was used to evacuate each well. Since the pumping equipment used was non-dedicated, procedures were instituted to protect the samples from contamination. The pump and tubing are constructed of inert materials and were rinsed and flushed with distilled water prior to use at each well. New pairs of clean nitrile gloves were worn by the sampling personnel at each well. Measures were also taken to prevent surface soils from coming in contact with the purging equipment and lines, which could introduce contaminants to the well. If the well was pumped dry during purging, the well was allowed to recover prior to sampling. In order to document that formation waters are entering the well, representative samples of the discharge water were periodically collected and tested for field water quality parameters. The parameters measured were ph, specific conductance, temperature, and turbidity. Water quality parameters (with the exception of turbidity) were considered stable if three successive readings did not vary more than 10 percent. Measures were taken to obtain turbidity readings as low as possible prior to sampling. Reliable Responsive Convenient Innovative 2

9 First Half 2013 Groundwater Monitoring Report Domtar A.W. LLC Class 3N Landfill Ashdown, Arkansas July 9, 2013 Terracon Project No B 2.3 Equipment Decontamination Procedure All equipment that was used in the monitoring wells and had contact with the samples was thoroughly cleaned before use. Equipment utilized included a water level probe, disposable bailer and twine, and a submersible pump. All bailers and bailer twine are individually wrapped and sealed by the manufacturer. The bailers are purified and rinsed with distilled water prior to packaging. The supplier independently tests the bailers at regular intervals to insure they are contaminant free. The water level probe was washed with potable water and phosphate-free laboratory detergent. Next, the probe was rinsed with potable water and, finally, rinsed with distilled water. The water level probe was then placed in a plastic bag to reduce contact with air and transported into the field. After a water level was measured, a paper towel soaked with distilled water was used to clean the tape and probe as it was retrieved from each well. The submersible pump was flushed with potable water and phosphate-free detergent prior to arrival at the site. After use in each well, the pump was flushed with distilled water in a portable decontamination tube. Finally, the outside of the pump was rinsed with distilled water. 2.4 Sample Extraction The technique used to withdraw each groundwater sample from the wells was selected based on consideration of the parameters to be analyzed in the sample. To insure the groundwater sample is representative of the formation, it is important to minimize physically altering or chemically contaminating the sample during the withdrawal process. To minimize the possibility of sample contamination, the Terracon field representative performed the following procedures: * Clean sampling equipment was not placed directly on the ground or other contaminated surfaces prior to insertion into the well. * Sampling equipment was gently lowered and retrieved in order to prevent undue disturbance of the water column. * Samples were transferred to the appropriate containers in a manner that minimized agitation and aeration. Once field parameters stabilized, samples were collected and containerized in the order of volatilization sensitivity of the parameters. The list of required parameters analyzed is presented in TABLE 1. It should be noted that during the First Half 2013 event, an updated list of monitoring parameters was analyzed in accordance with the Facility s Permit Condition No. 25. This extended list of parameters will be sampled again in 2018 based on the five year schedule. Reliable Responsive Convenient Innovative 3

10 First Half 2013 Groundwater Monitoring Report Domtar A.W. LLC Class 3N Landfill Ashdown, Arkansas August 14, 2013 Terracon Project No B TABLE 1 CONSTITUENTS FOR DETECTION MONITIORING REQUIRED CONSTITUENTS BARIUM CHLORIDE COD FLUORIDE IRON LEAD MANGANESE NITRATE (AS N) SELENIUM SULFATE SULFIDE TDS TOTAL ORGANIC CARBON (TOC) TURBIDITY (field) SPECIFIC CONDUCTANCE (field) ph (field) TEMPERATURE (field) The historical groundwater analytical results for the Class 3N Landfills are provided in Appendix C. 2.5 Field Testing Some of the parameters evaluated are physically or chemically unstable and were tested immediately after collection using a field test kit. Examples of unstable elements or properties include ph and temperature. Although turbidity and specific conductivity (inverse of electrical resistance) of a substance are relatively stable, these parameters were also measured in the field. This information was recorded on standard Groundwater Monitoring Sampling Records included in APPENDIX B. A summary of the field measurements for the First Half 2013 sampling event is presented in TABLE 2. Reliable Responsive Convenient Innovative 4

11 First Half 2013 Groundwater Monitoring Report Domtar A.W. LLC Class 3N Landfill Ashdown, Arkansas July 9, 2013 Terracon Project No B TABLE 2 FIELD MEASUREMENTS WELL DATE TOC ELEV. (fmsl) DEPTH TO WATER (ft.) WATER SURF. ELEV. (fmsl) TEMP. ( C) ph (SU) SPECIFIC CONDUCTANCE (us/cm) TURBIDITY (NTU) MW-2 5/31/ MW-3R 5/31/ MW-4 5/31/ MW-5 5/31/ MW-6 5/31/ Field QA/QC Procedures For QA/QC purposes, a field blank, labeled FB, was collected and submitted to Environmental Science Corporation (ESC). The Terracon field representative prepared the field blank for all of the required monitoring parameters. The field blank consisted of distilled water poured into a sample container under field conditions which was returned (with the standard samples) for laboratory analysis. The field blank was used to verify that ambient conditions and the handling process did not affect the quality of the samples. A duplicate sample, labeled dupe, was collected from monitoring well MW-6. The procedures utilized for collecting the duplicate sample were identical to the sampling protocol detailed in Section 2.4. The duplicate sample was collected at the same time as the MW-6 sample. The duplicate sample was collected to verify the consistency and precision of the sampling and testing procedures. 2.7 Handling/Transport/Custody Samples were accompanied by a Chain-of-Custody record that included the name of the facility, collector's signatures, monitoring point identification, date, time, type of sample, number of containers, and analyses required. Samples collected from the Landfill site were placed in sample containers provided by the Laboratory. Containers are certified clean by the supplier. The sample label is attached to the sample container at the time of collection. The following information is recorded on the sample label: * project or facility name * sample type * sample location number (well number) * preservative type * sampling date and time * sample collector s name or initials Reliable Responsive Convenient Innovative 5

12 First Half 2013 Groundwater Monitoring Report Domtar A.W. LLC Class 3N Landfill Ashdown, Arkansas August 14, 2013 Terracon Project No B Documentation for the sample collection process and other important information was recorded on the contract laboratory Chain-of-Custody form. The standard format includes the date, time, type of sample collected, code for sample analysis, unique sample number, sampling location, and field measurements. The entries were signed by the sample collector. 2.8 Sample Preservation Upon collection, the samples were placed in an ice chest for preservation and cooled to approximately 4 degrees Celsius. Custody was retained by a Terracon representative from the time of collection until shipment via Federal Express to Environmental Science Corporation Laboratory. Laboratory analytical results and a copy of the Laboratory Chain-of-Custody form are included in APPENDIX C. 3.0 FIRST HALF 2013 SEMI-ANNUAL SAMPLING EVENT The sampling results described in this report are for the First Half 2013 semi-annual detection monitoring event. The results of this sampling event are summarized in the following sections, tables, and appendices. In addition, all historical groundwater data were evaluated statistically to determine if significant differences exist between compliance and background constituent concentrations. 3.1 Groundwater Elevation & Flow Direction As mentioned previously, there are currently five monitoring wells located around the Landfill area. The water level data for the First Half 2013 sampling event indicates a groundwater flow direction to the south. This flow relationship is consistent with the flow direction indicated by previous water level measurements. FIGURE 2 presents a potentiometric surface map for the First Half 2013 sampling event. As this figure indicates, MW-2, MW-4, MW-5, and MW-6 are downgradient wells and MW-3R is the upgradient monitoring point. Based on the principles of Darcian flow, the average linear velocity (groundwater flow rate) during the First Half 2013 event was calculated utilizing the following equation: V X = (K*I) / N E where, V x is the average linear velocity (length/time), K is the hydraulic conductivity (length/time), i is the hydraulic gradient (length/length), and n e is the effective porosity (unitless). Hydraulic gradient was calculated for the First Half 2013 sampling event by comparing upgradient well MW-3R to downgradient well MW-2. The change in head of feet between Reliable Responsive Convenient Innovative 6

13 First Half 2013 Groundwater Monitoring Report Domtar A.W. LLC Class 3N Landfill Ashdown, Arkansas July 9, 2013 Terracon Project No B the two wells over a distance of 3,720 feet produces a hydraulic gradient of ft/ft. Based on the results of slug tests performed in MW-3 and in a temporary piezometer located near the site, (G-P Ashdown Class 3N Landfill Sampling and Analysis Plan, prepared by GEC, September 1999) the hydraulic conductivity varies across the site from 1.703x10-4 cm/sec to cm/sec and averages cm/sec for the uppermost aquifer. This hydraulic conductivity was used to aid in the flow rate calculations. An effective porosity of 0.40 was estimated for the type of material that comprises the uppermost aquifer (clean sand to clayey sand). The porosity was derived from the Effective Porosity of Common Soils table on page 5-57 of Standard Handbook for Solid & Hazardous Waste Facility Assessments by Martin N. Sara, published in Utilizing these values, the estimated average linear velocity was calculated as 2.13x10-6 cm/sec. Average linear velocity: V x = [(1.703x10-4 cm/sec)(0.004)]/(0.40) = 1.70x10-6 cm/sec 3.2 Groundwater Quality The data presented in APPENDIX A represents the historical groundwater analytical results compiled since the landfill monitoring system was first sampled on August 4, The analytical results for the First Half 2013 sampling event are presented in APPENDIX C. The statistical program SANITAS TM for Groundwater was used to analyze the data for increasing trends and to determine if statistically significant differences exist between background and detection monitoring parameter concentrations for each of the wells. The results of the statistical analyses are included in APPENDIX D Outlier Determination After entering the analytical groundwater data into the groundwater database SANITAS TM for Groundwater, the data is evaluated for the presence of anomalies or outliers. An outlier as defined in the Statistical Analysis of Ground-Water Monitoring Data at RCRA Facilities (Final Guidance, March 2009), is [a] ground-water constituent concentration value that is much different from most other values in a data set for the same ground-water constituent concentration. Values identified as outliers using this procedure may be either legitimate outliers or observational errors. An outlier, as generally defined, is a valid sample value that has little chance of being observed. Thus, while the value is a legitimate member of the population sampled, its presence in a sample set distorts estimates of population characteristics that can be inferred from the sample set. Statistical analysis of such a sample set is more informative when outliers are identified and discounted. An observation error may appear to have the same properties as an outlier, but the observation error is not a valid measurement. Observation errors may be introduced by poor sampling, sample handling techniques, improper analytical techniques, and laboratory errors. As a result, observation errors may also distort estimates of population characteristics. Reliable Responsive Convenient Innovative 7

14 First Half 2013 Groundwater Monitoring Report Domtar A.W. LLC Class 3N Landfill Ashdown, Arkansas August 14, 2013 Terracon Project No B TOC and manganese at MW-2; manganese at MW-3R; selenium at MW-4 and MW-6; and TOC and selenium at MW-5 were calculated to be statistical outliers during the First Half 2013 sampling event. An outlier analysis summary table is included in APPENDIX D. Additional outliers presented on the summary table occurred during previous sampling events Statistical Evaluation The methods used to evaluate the groundwater data for statistically significant increases (SSIs) were based on procedures outlined in the Statistical Analysis of Ground-Water Monitoring Data at RCRA Facilities (Final Guidance, March 2009) and ASTM D Standard Guide for Developing Appropriate Statistical Approaches for Groundwater Detection Monitoring Programs (2005). The SANITAS TM for Groundwater program was utilized to compile and statistically evaluate the data for the First Half 2013 sampling event. A brief description of the procedures that were used in the statistical evaluation is provided on each statistical plot (See APPENDIX D). The motive for performing statistical analysis on groundwater quality data is to distinguish if a facility has negatively impacted groundwater quality. Since the only information available is groundwater sample results, statistical evaluations are employed in order to estimate typical (normal) behavior of groundwater data. Despite sample fluctuations due to random variation, statistical analysis helps to determine if compliance concentrations are significantly higher, on average, than background groundwater concentrations. When selecting a valid statistical method for the Domtar Class 3N Landfills, several considerations were taken into account. Inter-well comparisons, which compare a background pool of data to a downgradient compliance pool of data, were invalid since the uppermost aquifer groundwater quality has shown spatial variability in the background data. Therefore, the following procedures were utilized: Intra-Well Prediction Intervals The prediction interval is a statistical interval used to compare a single observation to a group of observations. In groundwater monitoring a prediction interval approach may be used to make comparisons between background and compliance well data. The interval is constructed to contain all future observations with stated confidence. If any future observation exceeds this interval, this is statistically significant evidence that the observation is not representative of the background group. Parametric prediction intervals are the first choice when performing prediction interval statistics. The parametric alternative is constructed assuming the background data have a normal or transformed-normal distribution. During parametric prediction interval analysis, the mean and the standard deviation are calculated for the raw or transformed background data. Reliable Responsive Convenient Innovative 8

15 First Half 2013 Groundwater Monitoring Report Domtar A.W. LLC Class 3N Landfill Ashdown, Arkansas July 9, 2013 Terracon Project No B However, when the background data are not transformed-normal or contain between 50 and 90 percent observations below the detection limit, SANITAS TM for Groundwater automatically constructs a non-parametric prediction interval. During non-parametric analysis, the highest value from the background data is used to set the upper limit of the prediction interval. If more than 90 percent of the background data are less than the MDL, a Poisson distribution-based prediction interval is computed. The Poisson distribution is a probability distribution modeled for rare events. The Poisson probability of a detectable observation is rare unless there is an impact. It should be noted, when managing estimated concentrations between the MDL and PQL (J values), the guidance generally favors substituting the reporting limit (RL) itself as the imputation, rather than RL/2 for non-detects. Sen s Slope/Mann-Kendall When used in conjunction with one another, the Mann-Kendall test for temporal trend and the Sen s Slope estimate are two types of Evaluation Monitoring Statistics useful in determining the significance of an apparent trend and to estimate the magnitude of that trend. Prior to performing prediction intervals, the Sen s Slope/Mann-Kendall was performed on each detected parameter from each well to determine whether a statistical trend in data is present. The results of the intra-well prediction interval and Sen s Slope/Mann-Kendall statistical analyses associated with the First Half 2013 sampling event are presented in APPENDIX D Results of the Statistical Evaluation Based on statistical calculations performed with SANITAS TM for Groundwater utilizing intra-well methods, it was determined that statistically significant increases (SSIs) occurred for the following constituents: WELL MW-2 MW-3R MW-5 MW-6 Verified SSIs in BOLD PARAMETER sulfate, TDS, barium, chloride lead chloride, sulfate, TDS sulfate, sulfide, TDS, manganese Sulfide, TDS, and manganese at MW-6 represent initial exceedances during the First Half 2013 sampling event. These SSIs should not be considered valid unless verified by the next consecutive sampling event. Reliable Responsive Convenient Innovative 9

16 First Half 2013 Groundwater Monitoring Report Domtar A.W. LLC Class 3N Landfill Ashdown, Arkansas August 14, 2013 Terracon Project No B Sulfate, TDS, barium, and chloride at MW-2; lead at MW-3R; chloride, sulfate, and TDS at MW- 5; and sulfate at MW-6 were calculated to be verified SSIs during the First Half 2013 sampling event. It should be noted that MW-3R is upgradient of the landfill. As stated in previous reports, the model for the site determined from previous investigations was discussed in detail in the Second Half 2006 report, and given the lithology, the insitu hydraulic conductivity values for the clay units underlying the site, and the confined to semiconfined condition of the uppermost aquifer underlying the site, it appears unlikely that the SSIs observed were caused by the landfills. An Alternative Source Demonstration (ASD) dated April 21, 2008 was submitted to the ADEQ in accordance with ADEQ Regulation (c) concerning sulfate, TDS, and chloride. However, the ADEQ has not yet responded to the ASD submittal. Therefore, Domtar will continue with detection monitoring at the Ashdown facility until such time as the ADEQ has reviewed and commented on the ASD. It should be noted that barium at MW-2 (0.68 mg/l) was below the Primary Drinking Water Standard of 2 mg/l. Lead at MW-3 ( mg/l) was below the Primary Drinking Water Standard of mg/l Comparison to Established Water Quality Standards TABLE 3 compares concentrations from the First Half 2013 analytical results to the applicable Primary Drinking Water Standard-Maximum Contaminant Levels (MCLs) and Secondary Drinking Water Standards (SDWS). There were no Primary Drinking Water Standard-Maximum Contaminant Level (MCL) exceedances during the First Half 2013 monitoring event. It should be noted that total dioxin equivalence was sampled during this event. All dioxins were reported as non-detect with the exception of J values or interference. J values are estimated concentrations between the method detection level (MDL) and the practical quantitation level (PQL). Therefore, total dioxin equivalence will not be added to the detection monitoring list. Reliable Responsive Convenient Innovative 10

17 First Half 2013 Groundwater Monitoring Report Domtar A.W. LLC Class 3N Landfill Ashdown, Arkansas July 9, 2013 Terracon Project No B TABLE 3 GROUNDWATER QUALITY RESULTS PARAMETER MW-2 MW-3R MW-4 MW-5 MW-6 EPA STANDARD Barium * Chloride ** Fluoride ** Iron J J J 0.3** Lead < <0.001 <0.001 < * Manganese J J ** Nitrate as N <0.10 <0.10 <0.10 <0.10 < * Selenium J < J * Sulfate ** COD <10 < J <10 10 J --- Sulfide <0.050 <0.050 < J TDS ** TOC 0.27 J 0.81 J J Arsenic J J * Chromium J * ph (SU) ** *Primary Drinking Water Standard-Maximum Contaminant Level **Secondary Drinking Water Standard (SDWS) Values in bold exceed applicable EPA standards J Value= estimated concentration above the MDL but below the PQL QA/QC Comparison A comparison of the First Half 2013 analytical results for MW-6 and the duplicate sample (DUPE) is presented on TABLE 4. The analytical results of the duplicate sample are consistent with the results of the associated control sample (MW-6). Analytical results for the field blank (labeled FB) had reported detections of barium, chloride, manganese, sulfate, TDS, and TOC. Chloride, manganese, sulfate, TDS, and TOC were reported as J values, or estimated concentrations between the method detection level (MDL) and the practical quantitation level (PQL). Reliable Responsive Convenient Innovative 11

18 First Half 2013 Groundwater Monitoring Report Domtar A.W. LLC Class 3N Landfill Ashdown, Arkansas August 14, 2013 Terracon Project No B PARAMETER TABLE 4 QUALITY ASSURANCE / QUALITY CONTROL EPA STANDARDS MW-6 DUPLICATE (MW-6) FIELD BLANK Barium 2* Chloride 250** J Fluoride 4** <0.10 Iron 0.3** J J <0.10 Lead 0.015* <0.001 <0.001 <0.001 Manganese 0.05** J Nitrate as N 10* <0.10 <0.10 <0.10 Selenium 0.05* <0.001 Sulfate 250** J COD J 17 <10 Sulfide <0.050 <0.050 TDS 500** J TOC J *Primary Drinking Water Standard-Maximum Contaminant Level **Secondary Drinking Water Standard (SDWS) Values in bold exceed applicable EPA standards J Value= estimated concentration above the MDL but below the PQL 4.0 CONCLUSIONS Based on the results of the First Half 2013 groundwater sampling and analysis the following conclusions were made: Groundwater Flow: FIGURE 2 represents a potentiometric surface map constructed from water level measurements taken during the First Half 2013 sampling event. As indicated, groundwater within the uppermost aquifer flows to the south. This flow relationship is consistent with the flow direction indicated by previous water level measurements. The average linear velocity (groundwater flow rate) for the First Half 2013 event was estimated at 1.70x10-6 cm/sec. Analytical Results: There were no Primary Drinking Water Standard-Maximum Contaminant Level (MCL) exceedances during the First Half 2013 monitoring event. Reliable Responsive Convenient Innovative 12

19 First Half 2013 Groundwater Monitoring Report Domtar A.W. LLC Class 3N Landfill Ashdown, Arkansas July 9, 2013 Terracon Project No B A comparison of the First Half 2013 analytical results for MW-6 and the duplicate sample (DUPE) is presented on TABLE 4. The analytical results of the duplicate sample are consistent with the results of the associated control sample (MW-6). Analytical results for the field blank (labeled FB) had reported detections of barium, chloride, manganese, sulfate, TDS, and TOC. Chloride, manganese, sulfate, TDS, and TOC were reported as J values, or estimated concentrations between the method detection level (MDL) and the practical quantitation level (PQL). Statistical Evaluation: TOC and manganese at MW-2; manganese at MW-3R; selenium at MW-4 and MW-6; and TOC and selenium at MW-5 were calculated to be statistical outliers during the First Half 2013 sampling event. An outlier analysis summary table is included in APPENDIX D. Additional outliers presented on the summary table occurred during previous sampling events. Based on statistical calculations performed with SANITAS TM for Groundwater utilizing intra-well methods, it was determined that statistically significant increases (SSIs) occurred for the following constituents: WELL MW-2 MW-3R MW-5 MW-6 Verified SSIs in BOLD PARAMETER sulfate, TDS, barium, chloride lead chloride, sulfate, TDS sulfate, sulfide, TDS, manganese Sulfide, TDS, and manganese at MW-6 represent initial exceedances during the First Half 2013 sampling event. These SSIs should not be considered valid unless verified by the next consecutive sampling event. Sulfate, TDS, barium, and chloride at MW-2; lead at MW-3R; chloride, sulfate, and TDS at MW-5; and sulfate at MW-6 were calculated to be verified SSIs during the First Half 2013 sampling event. It should be noted that MW-3R is upgradient of the landfill. As stated in previous reports, the model for the site determined from previous investigations was discussed in detail in the Second Half 2006 report, and given the lithology, the insitu hydraulic conductivity values for the clay units underlying the site, and the confined to semi-confined condition of the uppermost aquifer underlying the site, it appears unlikely that the SSIs observed were caused by the landfills. Reliable Responsive Convenient Innovative 13

20 First Half 2013 Groundwater Monitoring Report Domtar A.W. LLC Class 3N Landfill Ashdown, Arkansas August 14, 2013 Terracon Project No B An Alternative Source Demonstration (ASD) dated April 21, 2008 was submitted to the ADEQ in accordance with ADEQ Regulation (c) concerning sulfate, TDS, and chloride. However, the ADEQ has not yet responded to the ASD submittal. Therefore, Domtar will continue with detection monitoring at the Ashdown facility until such time as the ADEQ has reviewed and commented on the ASD. It should be noted that barium at MW-2 (0.68 mg/l) was below the Primary Drinking Water Standard of 2 mg/l. Lead at MW-3 ( mg/l) was below the Primary Drinking Water Standard of mg/l. In accordance with the Facility s Permit Condition No. 25, an extended list of parameters was sampled during the First Half Arsenic and chromium were detected; therefore, these parameters will be added to the detection monitoring list. It should be noted that total dioxin equivalence was sampled during this event. All dioxins were reported as non-detect with the exception of J values or interference. J values are estimated concentrations between the method detection level (MDL) and the practical quantitation level (PQL). Therefore, total dioxin equivalence will not be added to the detection monitoring list. Notification of the above verified SSIs was submitted to the ADEQ in a letter dated August 14, The next semi-annual detection monitoring event is tentatively scheduled for November Reliable Responsive Convenient Innovative 14

21 FIGURES

22

23

24 APPENDIX A

25 GROUNDWATER MONITORING SAMPLING RECORD PROJECT: Domtar A. W. Corp. Ashdown SAMPLING LOCATION: MW-2 WEATHER CONDITIONS: Cloudy, 90 F MONITORING WELL CONDITION: WELL LOCKED? Yes WELL NUMBER LABELED? Yes CASING CONDITION: Ok DATUM FOR WATER DEPTH MEASUREMENT: T.O.C. GENERAL WELL EXTERIOR/INTERIOR CONDITIONS: Ok DECON FIELD EQUIPMENT: DI water WATER DEPTH (WD): feet TOTAL DEPTH OF WELL (TD): feet VOLUME OF WATER IN WELL: V = x [TD-WD(feet)] x [Well Diameter (inches)] 2 = 4.0 Gallons WATER CONDITION BEFORE WELL PURGING: APPEARANCE: Turbid ODOR: None WELL PURGING DATE: 5/31/13 PURGING METHOD: Grundfos pump TIME START PURGING: 1215 TIME END PURGING: 1255 VOLUME PURGED (Try for 3 Volumes): 16.0 Gallons APPEARANCE: Clear ODOR: None WELL PURGED DRY? No SAMPLING DATE: 5/31/13 SAMPLING METHOD: Grundfos pump TIME START SAMPLING: 1255 TIME END SAMPLING: 1305 FIELD MEASUREMENTS: (Need at least 3 consecutive readings w/in 10% for stabilization) TIME RATE GALLONS TEMP ph CONDUCTANCE TURBIDITY C 7.08 SU 1299 S/cm 38.0 NTU C 7.05 SU 1299 S/cm 7.49 NTU C 7.02 SU 1308 S/cm 5.64 NTU C 7.02 SU 1303 S/cm 4.61 NTU FIELD SAMPLE PRESERVATION: Ice CONTAINER HANDLING: Terracon Consultants Inc. COMMENTS:

26 GROUNDWATER MONITORING SAMPLING RECORD PROJECT: Domtar A. W. Corp. Ashdown SAMPLING LOCATION: MW-3R WEATHER CONDITIONS: Cloudy, 85 F MONITORING WELL CONDITION: WELL LOCKED? Yes WELL NUMBER LABELED? Yes CASING CONDITION: Ok DATUM FOR WATER DEPTH MEASUREMENT: T.O.C. GENERAL WELL EXTERIOR/INTERIOR CONDITIONS: Ok DECON FIELD EQUIPMENT: DI water WATER DEPTH (WD): feet TOTAL DEPTH OF WELL (TD): feet VOLUME OF WATER IN WELL: V = x [TD-WD(feet)] x [Well Diameter (inches)] 2 = 6.0 Gallons WATER CONDITION BEFORE WELL PURGING: APPEARANCE: Turbid ODOR: None WELL PURGING DATE: 5/31/13 PURGING METHOD: Grundfos pump TIME START PURGING: 1025 TIME END PURGING: 1050 VOLUME PURGED (Try for 3 Volumes): 30.0 Gallons APPEARANCE: Turbid ODOR: WELL PURGED DRY? Yes SAMPLING DATE: 5/31/13 SAMPLING METHOD: Disposable bailer TIME START SAMPLING: 1530 TIME END SAMPLING: 1545 FIELD MEASUREMENTS: (Need at least 3 consecutive readings w/in 10% for stabilization) TIME RATE GALLONS TEMP ph CONDUCTANCE TURBIDITY C 7.05 SU 479 S/cm >1000 NTU C 7.25 SU 481 S/cm >1000 NTU C 7.35 SU 485 S/cm >1000 NTU C 7.43 SU 488 S/cm >1000 NTU Dry at 30.0 gallons 1530 bailer 26.9 C 8.20 SU 496 S/cm 114 NTU FIELD SAMPLE PRESERVATION: Ice CONTAINER HANDLING: Terracon Consultants Inc. COMMENTS:

27 GROUNDWATER MONITORING SAMPLING RECORD PROJECT: Domtar A. W. Corp. Ashdown SAMPLING LOCATION: MW-4 WEATHER CONDITIONS: Cloudy, 95 F MONITORING WELL CONDITION: WELL LOCKED? Yes WELL NUMBER LABELED? Yes CASING CONDITION: Ok DATUM FOR WATER DEPTH MEASUREMENT: T.O.C. GENERAL WELL EXTERIOR/INTERIOR CONDITIONS: Ok DECON FIELD EQUIPMENT: DI water WATER DEPTH (WD): feet TOTAL DEPTH OF WELL (TD): feet VOLUME OF WATER IN WELL: V = x [TD-WD(feet)] x [Well Diameter (inches)] 2 = 6.5 Gallons WATER CONDITION BEFORE WELL PURGING: APPEARANCE: Turbid ODOR: None WELL PURGING DATE: 5/31/13 PURGING METHOD: Grundfos pump TIME START PURGING: 1410 TIME END PURGING: 1440 VOLUME PURGED (Try for 3 Volumes): 21.0 Gallons APPEARANCE: Clear ODOR: None WELL PURGED DRY? No SAMPLING DATE: 5/31/13 SAMPLING METHOD: Grundfos pump TIME START SAMPLING: 1440 TIME END SAMPLING: 1450 FIELD MEASUREMENTS: (Need at least 3 consecutive readings w/in 10% for stabilization) TIME RATE GALLONS TEMP ph CONDUCTANCE TURBIDITY C 6.81 SU 1550 S/cm 15.8 NTU C 6.80 SU 1539 S/cm 3.56 NTU C 6.78 SU 1565 S/cm 2.93 NTU FIELD SAMPLE PRESERVATION: Ice CONTAINER HANDLING: Terracon Consultants Inc. COMMENTS:

28 GROUNDWATER MONITORING SAMPLING RECORD PROJECT: Domtar A. W. Corp. Ashdown SAMPLING LOCATION: MW-5 WEATHER CONDITIONS: Cloudy, 90 F MONITORING WELL CONDITION: WELL LOCKED? Yes WELL NUMBER LABELED? Yes CASING CONDITION: Ok DATUM FOR WATER DEPTH MEASUREMENT: T.O.C. GENERAL WELL EXTERIOR/INTERIOR CONDITIONS: Ok DECON FIELD EQUIPMENT: DI water WATER DEPTH (WD): feet TOTAL DEPTH OF WELL (TD): feet VOLUME OF WATER IN WELL: V = x [TD-WD(feet)] x [Well Diameter (inches)] 2 = 4.2 Gallons WATER CONDITION BEFORE WELL PURGING: APPEARANCE: Turbid ODOR: None WELL PURGING DATE: 5/31/13 PURGING METHOD: Grundfos pump TIME START PURGING: 1315 TIME END PURGING: 1345 VOLUME PURGED (Try for 3 Volumes): 15.0 Gallons APPEARANCE: Clear ODOR: None WELL PURGED DRY? No SAMPLING DATE: 5/31/13 SAMPLING METHOD: Grundfos pump TIME START SAMPLING: 1345 TIME END SAMPLING: 1355 FIELD MEASUREMENTS: (Need at least 3 consecutive readings w/in 10% for stabilization) TIME RATE GALLONS TEMP ph CONDUCTANCE TURBIDITY C 7.08 SU 1303 S/cm 22.9 NTU C 7.09 SU 1259 S/cm 12.7 NTU C 7.02 SU 1263 S/cm 4.42 NTU FIELD SAMPLE PRESERVATION: Ice CONTAINER HANDLING: Terracon Consultants Inc. COMMENTS:

29 GROUNDWATER MONITORING SAMPLING RECORD PROJECT: Domtar A. W. Corp. Ashdown SAMPLING LOCATION: MW-6 WEATHER CONDITIONS: Cloudy, 90 F MONITORING WELL CONDITION: WELL LOCKED? Yes WELL NUMBER LABELED? Yes CASING CONDITION: Ok DATUM FOR WATER DEPTH MEASUREMENT: T.O.C. GENERAL WELL EXTERIOR/INTERIOR CONDITIONS: Ok DECON FIELD EQUIPMENT: DI water WATER DEPTH (WD): feet TOTAL DEPTH OF WELL (TD): feet VOLUME OF WATER IN WELL: V = x [TD-WD(feet)] x [Well Diameter (inches)] 2 = 5.0 Gallons WATER CONDITION BEFORE WELL PURGING: APPEARANCE: Turbid ODOR: None WELL PURGING DATE: 5/31/13 PURGING METHOD: Grundfos pump TIME START PURGING: 1110 TIME END PURGING: 1140 VOLUME PURGED (Try for 3 Volumes): 18.0 Gallons APPEARANCE: Clear ODOR: None WELL PURGED DRY? No SAMPLING DATE: 5/31/13 SAMPLING METHOD: Grundfos pump TIME START SAMPLING: 1140 TIME END SAMPLING: 1155 FIELD MEASUREMENTS: (Need at least 3 consecutive readings w/in 10% for stabilization) TIME RATE GALLONS TEMP ph CONDUCTANCE TURBIDITY C 6.72 SU 2360 S/cm 12.5 NTU C 6.61 SU 2410 S/cm 4.67 NTU C 6.63 SU 2440 S/cm 3.37 NTU FIELD SAMPLE PRESERVATION: Ice CONTAINER HANDLING: Terracon Consultants Inc. COMMENTS: Dupe at 1145, FB at 1155

30 GROUNDWATER MONITORING SAMPLING RECORD PROJECT: Domtar A. W. Corp. Ashdown SAMPLING LOCATION: Leachate- Lime WEATHER CONDITIONS: Cloudy, 95 F MONITORING WELL CONDITION: WELL LOCKED? NA WELL NUMBER LABELED? NA CASING CONDITION: NA DATUM FOR WATER DEPTH MEASUREMENT: NA GENERAL WELL EXTERIOR/INTERIOR CONDITIONS: NA DECON FIELD EQUIPMENT: NA WATER DEPTH (WD): NA TOTAL DEPTH OF WELL (TD): NA VOLUME OF WATER IN WELL: NA V = x [TD-WD(feet)] x [Well Diameter (inches)] 2 = NA Gallons WATER CONDITION BEFORE WELL PURGING: APPEARANCE: NA ODOR: WELL PURGING DATE: NA PURGING METHOD: NA TIME START PURGING: NA TIME END PURGING: NA VOLUME PURGED (Try for 3 Volumes): APPEARANCE: Turbid ODOR: Yes WELL PURGED DRY? SAMPLING DATE: 5/31/13 SAMPLING METHOD: Disposable bailer TIME START SAMPLING: 1500 TIME END SAMPLING: 1515 FIELD MEASUREMENTS: (Need at least 3 consecutive readings w/in 10% for stabilization) TIME RATE GALLONS TEMP ph CONDUCTANCE TURBIDITY C SU Over limit 4.18 NTU FIELD SAMPLE PRESERVATION: Ice CONTAINER HANDLING: Terracon Consultants Inc. COMMENTS:

31 APPENDIX B

32 12065 Lebanon Rd. Mt. Juliet, TN (615) Fax (615) Tax I.D Est David Jaros Terracon- Little Rock, AR I-30 Bryant, AR Report Summary Tuesday June 18, 2013 Report Number: L Samples Received: 06/01/13 Client Project: Description: Domtar Industries-Ashdown LF The analytical results in this report are based upon information supplied by you, the client, and are for your exclusive use. If you have any questions regarding this data package, please do not hesitate to call. Entire Report Reviewed By: Laboratory Certification Numbers Mark W. Beasley, ESC Representative A2LA , AIHA , AL , CA CA, CT - PH-0197, FL - E87487, GA - 923, IN - C-TN-01, KY , KYUST , NC - ENV375/DW21704/BIO041, ND - R-140. NJ - TN002, NJ NELAP - TN002, SC , TN , VA , WV - 233, AZ , MN , NY , WI , NV - TN , TX - T , OK , PA , IA Lab #364 Accreditation is only applicable to the test methods specified on each scope of accreditation held by ESC Lab Sciences. Note: The use of the preparatory EPA Method 3511 is not approved or endorsed by the CA ELAP. This report may not be reproduced, except in full, without written approval from ESC Lab Sciences. Where applicable, sampling conducted by ESC is performed per guidance provided in laboratory standard operating procedures: , , and Page 1 of 20

33 12065 Lebanon Rd. Mt. Juliet, TN (615) Fax (615) Tax I.D Est REPORT OF ANALYSIS David Jaros June 18, 2013 Terracon- Little Rock, AR I-30 Bryant, AR Date Received : June 01, 2013 Description : Domtar Industries-Ashdown LF Sample ID : MW-2 Collected By : Wes Williams Collection Date : 05/31/13 12:55 ESC Sample # : L Site ID : Project # : Parameter Result MDL RDL Units Qualifier Method Date Dil. Chloride ug/l /01/13 5 Fluoride ug/l /05/13 1 Nitrate U ug/l /01/13 1 Sulfate ug/l /01/13 1 COD U ug/l /07/13 1 Sulfide U ug/l 4500S2 06/05/13 1 TOC (Total Organic Carbon) ug/l J 9060A 06/07/13 1 Dissolved Solids ug/l 2540 C- 06/06/13 1 Arsenic ug/l P /12/13 1 Cadmium U ug/l /12/13 1 Chromium ug/l J /12/13 1 Lead U ug/l /12/13 1 Selenium ug/l J /12/13 1 Silver ug/l JP /12/13 1 Mercury U ug/l 7470A 06/04/13 1 Barium ug/l 6010B 06/11/13 1 Iron ug/l J 6010B 06/11/13 1 Manganese ug/l J 6010B 06/11/13 1 Volatile Organics Benzene U ug/l 8260B 06/02/13 1 Carbon tetrachloride U ug/l 8260B 06/02/13 1 1,4-Dichlorobenzene U ug/l 8260B 06/02/13 1 1,2-Dichloroethane U ug/l 8260B 06/02/13 1 1,1-Dichloroethene U ug/l 8260B 06/02/13 1 1,1,1-Trichloroethane U ug/l 8260B 06/02/13 1 Trichloroethene U ug/l 8260B 06/02/13 1 Vinyl chloride U ug/l 8260B 06/02/13 1 Surrogate Recovery Toluene-d % Rec. 8260B 06/02/13 1 Dibromofluoromethane 103. % Rec. 8260B 06/02/ Bromofluorobenzene 102. % Rec. 8260B 06/02/13 1 Pesticides Gamma BHC U ug/l 8081 A 06/11/13 1 Pesticides Surrogates U = ND (Not Detected) RDL = Reported Detection Limit = LOQ = PQL = EQL = TRRP MQL MDL = Minimum Detection Limit = LOD = TRRP SDL Note: The reported analytical results relate only to the sample submitted. This report shall not be reproduced, except in full, without the written approval from ESC.. Reported: 06/18/13 18:25 Printed: 06/18/13 18:26 Page 2 of 20

34 12065 Lebanon Rd. Mt. Juliet, TN (615) Fax (615) Tax I.D Est REPORT OF ANALYSIS David Jaros June 18, 2013 Terracon- Little Rock, AR I-30 Bryant, AR Date Received : June 01, 2013 Description : Domtar Industries-Ashdown LF Sample ID : MW-2 Collected By : Wes Williams Collection Date : 05/31/13 12:55 ESC Sample # : L Site ID : Project # : Parameter Result MDL RDL Units Qualifier Method Date Dil. Decachlorobiphenyl 81.6 % Rec A 06/11/13 1 Tetrachloro-m-xylene 83.8 % Rec A 06/11/13 1 U = ND (Not Detected) RDL = Reported Detection Limit = LOQ = PQL = EQL = TRRP MQL MDL = Minimum Detection Limit = LOD = TRRP SDL Note: The reported analytical results relate only to the sample submitted. This report shall not be reproduced, except in full, without the written approval from ESC.. Reported: 06/18/13 18:25 Printed: 06/18/13 18:26 Page 3 of 20

35 12065 Lebanon Rd. Mt. Juliet, TN (615) Fax (615) Tax I.D Est REPORT OF ANALYSIS David Jaros June 18, 2013 Terracon- Little Rock, AR I-30 Bryant, AR Date Received : June 01, 2013 Description : Domtar Industries-Ashdown LF Sample ID : MW-3R Collected By : Wes Williams Collection Date : 05/31/13 15:30 ESC Sample # : L Site ID : Project # : Parameter Result MDL RDL Units Qualifier Method Date Dil. Chloride ug/l /01/13 1 Fluoride ug/l /01/13 1 Nitrate U ug/l /01/13 1 Sulfate ug/l /01/13 1 COD U ug/l /07/13 1 Sulfide U ug/l 4500S2 06/05/13 1 TOC (Total Organic Carbon) ug/l J 9060A 06/07/13 1 Dissolved Solids ug/l 2540 C- 06/06/13 1 Arsenic ug/l J /18/13 1 Cadmium U ug/l /18/13 1 Chromium ug/l /18/13 1 Lead ug/l /18/13 1 Selenium U ug/l /18/13 1 Silver U ug/l /18/13 1 Mercury U ug/l 7470A 06/04/13 1 Barium ug/l 6010B 06/11/13 1 Iron ug/l 6010B 06/11/13 1 Manganese ug/l 6010B 06/11/13 1 Volatile Organics Benzene U ug/l 8260B 06/02/13 1 Carbon tetrachloride U ug/l 8260B 06/02/13 1 1,4-Dichlorobenzene U ug/l 8260B 06/02/13 1 1,2-Dichloroethane U ug/l 8260B 06/02/13 1 1,1-Dichloroethene U ug/l 8260B 06/02/13 1 1,1,1-Trichloroethane U ug/l 8260B 06/02/13 1 Trichloroethene U ug/l 8260B 06/02/13 1 Vinyl chloride U ug/l 8260B 06/02/13 1 Surrogate Recovery Toluene-d % Rec. 8260B 06/02/13 1 Dibromofluoromethane 104. % Rec. 8260B 06/02/ Bromofluorobenzene 103. % Rec. 8260B 06/02/13 1 Pesticides Gamma BHC U ug/l 8081 A 06/11/13 1 Pesticides Surrogates U = ND (Not Detected) RDL = Reported Detection Limit = LOQ = PQL = EQL = TRRP MQL MDL = Minimum Detection Limit = LOD = TRRP SDL Note: The reported analytical results relate only to the sample submitted. This report shall not be reproduced, except in full, without the written approval from ESC.. Reported: 06/18/13 18:25 Printed: 06/18/13 18:26 Page 4 of 20

36 12065 Lebanon Rd. Mt. Juliet, TN (615) Fax (615) Tax I.D Est REPORT OF ANALYSIS David Jaros June 18, 2013 Terracon- Little Rock, AR I-30 Bryant, AR Date Received : June 01, 2013 Description : Domtar Industries-Ashdown LF Sample ID : MW-3R Collected By : Wes Williams Collection Date : 05/31/13 15:30 ESC Sample # : L Site ID : Project # : Parameter Result MDL RDL Units Qualifier Method Date Dil. Decachlorobiphenyl 123. % Rec A 06/11/13 1 Tetrachloro-m-xylene 102. % Rec A 06/11/13 1 U = ND (Not Detected) RDL = Reported Detection Limit = LOQ = PQL = EQL = TRRP MQL MDL = Minimum Detection Limit = LOD = TRRP SDL Note: The reported analytical results relate only to the sample submitted. This report shall not be reproduced, except in full, without the written approval from ESC.. Reported: 06/18/13 18:25 Printed: 06/18/13 18:26 Page 5 of 20

37 12065 Lebanon Rd. Mt. Juliet, TN (615) Fax (615) Tax I.D Est REPORT OF ANALYSIS David Jaros June 18, 2013 Terracon- Little Rock, AR I-30 Bryant, AR Date Received : June 01, 2013 Description : Domtar Industries-Ashdown LF Sample ID : MW-4 Collected By : Wes Williams Collection Date : 05/31/13 14:40 ESC Sample # : L Site ID : Project # : Parameter Result MDL RDL Units Qualifier Method Date Dil. Chloride ug/l /01/13 1 Fluoride ug/l /01/13 1 Nitrate U ug/l /01/13 1 Sulfate ug/l /01/13 1 COD ug/l J /07/13 1 Sulfide U ug/l 4500S2 06/05/13 1 TOC (Total Organic Carbon) ug/l 9060A 06/07/13 1 Dissolved Solids ug/l 2540 C- 06/06/13 1 Arsenic ug/l J /18/13 1 Cadmium U ug/l /18/13 1 Chromium ug/l /18/13 1 Lead U ug/l /18/13 1 Selenium ug/l J /18/13 1 Silver U ug/l /18/13 1 Mercury U ug/l 7470A 06/04/13 1 Barium ug/l 6010B 06/11/13 1 Iron ug/l 6010B 06/11/13 1 Manganese ug/l 6010B 06/11/13 1 Volatile Organics Benzene U ug/l 8260B 06/02/13 1 Carbon tetrachloride U ug/l 8260B 06/02/13 1 1,4-Dichlorobenzene U ug/l 8260B 06/02/13 1 1,2-Dichloroethane U ug/l 8260B 06/02/13 1 1,1-Dichloroethene U ug/l 8260B 06/02/13 1 1,1,1-Trichloroethane U ug/l 8260B 06/02/13 1 Trichloroethene U ug/l 8260B 06/02/13 1 Vinyl chloride U ug/l 8260B 06/02/13 1 Surrogate Recovery Toluene-d % Rec. 8260B 06/02/13 1 Dibromofluoromethane 104. % Rec. 8260B 06/02/ Bromofluorobenzene 102. % Rec. 8260B 06/02/13 1 Pesticides Gamma BHC U ug/l 8081 A 06/11/13 1 Pesticides Surrogates U = ND (Not Detected) RDL = Reported Detection Limit = LOQ = PQL = EQL = TRRP MQL MDL = Minimum Detection Limit = LOD = TRRP SDL Note: The reported analytical results relate only to the sample submitted. This report shall not be reproduced, except in full, without the written approval from ESC.. Reported: 06/18/13 18:25 Printed: 06/18/13 18:26 Page 6 of 20

38 12065 Lebanon Rd. Mt. Juliet, TN (615) Fax (615) Tax I.D Est REPORT OF ANALYSIS David Jaros June 18, 2013 Terracon- Little Rock, AR I-30 Bryant, AR Date Received : June 01, 2013 Description : Domtar Industries-Ashdown LF Sample ID : MW-4 Collected By : Wes Williams Collection Date : 05/31/13 14:40 ESC Sample # : L Site ID : Project # : Parameter Result MDL RDL Units Qualifier Method Date Dil. Decachlorobiphenyl 76.4 % Rec A 06/11/13 1 Tetrachloro-m-xylene 88.9 % Rec A 06/11/13 1 U = ND (Not Detected) RDL = Reported Detection Limit = LOQ = PQL = EQL = TRRP MQL MDL = Minimum Detection Limit = LOD = TRRP SDL Note: The reported analytical results relate only to the sample submitted. This report shall not be reproduced, except in full, without the written approval from ESC.. Reported: 06/18/13 18:25 Printed: 06/18/13 18:26 Page 7 of 20

39 12065 Lebanon Rd. Mt. Juliet, TN (615) Fax (615) Tax I.D Est REPORT OF ANALYSIS David Jaros June 18, 2013 Terracon- Little Rock, AR I-30 Bryant, AR Date Received : June 01, 2013 Description : Domtar Industries-Ashdown LF Sample ID : MW-5 Collected By : Wes Williams Collection Date : 05/31/13 13:45 ESC Sample # : L Site ID : Project # : Parameter Result MDL RDL Units Qualifier Method Date Dil. Chloride ug/l /01/13 5 Fluoride ug/l /01/13 1 Nitrate U ug/l /01/13 1 Sulfate ug/l /01/13 1 COD U ug/l /07/13 1 Sulfide ug/l J 4500S2 06/05/13 1 TOC (Total Organic Carbon) ug/l J 9060A 06/07/13 1 Dissolved Solids ug/l 2540 C- 06/06/13 1 Arsenic ug/l /18/13 1 Cadmium U ug/l /18/13 1 Chromium ug/l /18/13 1 Lead U ug/l /18/13 1 Selenium ug/l /18/13 1 Silver U ug/l /18/13 1 Mercury U ug/l 7470A 06/04/13 1 Barium ug/l 6010B 06/11/13 1 Iron ug/l J 6010B 06/11/13 1 Manganese ug/l J 6010B 06/11/13 1 Volatile Organics Benzene U ug/l 8260B 06/02/13 1 Carbon tetrachloride U ug/l 8260B 06/02/13 1 1,4-Dichlorobenzene U ug/l 8260B 06/02/13 1 1,2-Dichloroethane U ug/l 8260B 06/02/13 1 1,1-Dichloroethene U ug/l 8260B 06/02/13 1 1,1,1-Trichloroethane U ug/l 8260B 06/02/13 1 Trichloroethene U ug/l 8260B 06/02/13 1 Vinyl chloride U ug/l 8260B 06/02/13 1 Surrogate Recovery Toluene-d % Rec. 8260B 06/02/13 1 Dibromofluoromethane 101. % Rec. 8260B 06/02/ Bromofluorobenzene 102. % Rec. 8260B 06/02/13 1 Pesticides Gamma BHC U ug/l 8081 A 06/11/13 1 Pesticides Surrogates U = ND (Not Detected) RDL = Reported Detection Limit = LOQ = PQL = EQL = TRRP MQL MDL = Minimum Detection Limit = LOD = TRRP SDL Note: The reported analytical results relate only to the sample submitted. This report shall not be reproduced, except in full, without the written approval from ESC.. Reported: 06/18/13 18:25 Printed: 06/18/13 18:26 Page 8 of 20

40 12065 Lebanon Rd. Mt. Juliet, TN (615) Fax (615) Tax I.D Est REPORT OF ANALYSIS David Jaros June 18, 2013 Terracon- Little Rock, AR I-30 Bryant, AR Date Received : June 01, 2013 Description : Domtar Industries-Ashdown LF Sample ID : MW-5 Collected By : Wes Williams Collection Date : 05/31/13 13:45 ESC Sample # : L Site ID : Project # : Parameter Result MDL RDL Units Qualifier Method Date Dil. Decachlorobiphenyl 82.0 % Rec A 06/11/13 1 Tetrachloro-m-xylene 83.1 % Rec A 06/11/13 1 U = ND (Not Detected) RDL = Reported Detection Limit = LOQ = PQL = EQL = TRRP MQL MDL = Minimum Detection Limit = LOD = TRRP SDL Note: The reported analytical results relate only to the sample submitted. This report shall not be reproduced, except in full, without the written approval from ESC.. Reported: 06/18/13 18:25 Printed: 06/18/13 18:26 Page 9 of 20

41 12065 Lebanon Rd. Mt. Juliet, TN (615) Fax (615) Tax I.D Est REPORT OF ANALYSIS David Jaros June 18, 2013 Terracon- Little Rock, AR I-30 Bryant, AR Date Received : June 01, 2013 Description : Domtar Industries-Ashdown LF Sample ID : MW-6 Collected By : Wes Williams Collection Date : 05/31/13 11:40 ESC Sample # : L Site ID : Project # : Parameter Result MDL RDL Units Qualifier Method Date Dil. Chloride ug/l /01/13 5 Fluoride ug/l /01/13 1 Nitrate U ug/l /01/13 1 Sulfate ug/l /01/13 1 COD ug/l J /07/13 1 Sulfide ug/l 4500S2 06/05/13 1 TOC (Total Organic Carbon) ug/l 9060A 06/07/13 1 Dissolved Solids ug/l 2540 C- 06/06/13 1 Arsenic ug/l /18/13 1 Cadmium U ug/l /18/13 1 Chromium ug/l /18/13 1 Lead U ug/l /18/13 1 Selenium ug/l /18/13 1 Silver U ug/l /18/13 1 Mercury U ug/l 7470A 06/04/13 1 Barium ug/l 6010B 06/11/13 1 Iron ug/l J 6010B 06/11/13 1 Manganese ug/l 6010B 06/11/13 1 Volatile Organics Benzene U ug/l 8260B 06/02/13 1 Carbon tetrachloride U ug/l 8260B 06/02/13 1 1,4-Dichlorobenzene U ug/l 8260B 06/02/13 1 1,2-Dichloroethane U ug/l 8260B 06/02/13 1 1,1-Dichloroethene U ug/l 8260B 06/02/13 1 1,1,1-Trichloroethane U ug/l 8260B 06/02/13 1 Trichloroethene U ug/l 8260B 06/02/13 1 Vinyl chloride U ug/l 8260B 06/02/13 1 Surrogate Recovery Toluene-d % Rec. 8260B 06/02/13 1 Dibromofluoromethane 106. % Rec. 8260B 06/02/ Bromofluorobenzene 101. % Rec. 8260B 06/02/13 1 Pesticides Gamma BHC U ug/l 8081 A 06/11/13 1 Pesticides Surrogates U = ND (Not Detected) RDL = Reported Detection Limit = LOQ = PQL = EQL = TRRP MQL MDL = Minimum Detection Limit = LOD = TRRP SDL Note: The reported analytical results relate only to the sample submitted. This report shall not be reproduced, except in full, without the written approval from ESC.. Reported: 06/18/13 18:25 Printed: 06/18/13 18:26 Page 10 of 20

42 12065 Lebanon Rd. Mt. Juliet, TN (615) Fax (615) Tax I.D Est REPORT OF ANALYSIS David Jaros June 18, 2013 Terracon- Little Rock, AR I-30 Bryant, AR Date Received : June 01, 2013 Description : Domtar Industries-Ashdown LF Sample ID : MW-6 Collected By : Wes Williams Collection Date : 05/31/13 11:40 ESC Sample # : L Site ID : Project # : Parameter Result MDL RDL Units Qualifier Method Date Dil. Decachlorobiphenyl 85.3 % Rec A 06/11/13 1 Tetrachloro-m-xylene 89.5 % Rec A 06/11/13 1 U = ND (Not Detected) RDL = Reported Detection Limit = LOQ = PQL = EQL = TRRP MQL MDL = Minimum Detection Limit = LOD = TRRP SDL Note: The reported analytical results relate only to the sample submitted. This report shall not be reproduced, except in full, without the written approval from ESC.. Reported: 06/18/13 18:25 Printed: 06/18/13 18:26 Page 11 of 20

43 12065 Lebanon Rd. Mt. Juliet, TN (615) Fax (615) Tax I.D Est REPORT OF ANALYSIS David Jaros June 18, 2013 Terracon- Little Rock, AR I-30 Bryant, AR Date Received : June 01, 2013 Description : Domtar Industries-Ashdown LF Sample ID : DUPE Collected By : Wes Williams Collection Date : 05/31/13 11:45 ESC Sample # : L Site ID : Project # : Parameter Result MDL RDL Units Qualifier Method Date Dil. Chloride ug/l /01/13 5 Fluoride ug/l /01/13 1 Nitrate U ug/l /01/13 1 Sulfate ug/l /01/13 1 COD ug/l /07/13 1 Sulfide U ug/l 4500S2 06/05/13 1 TOC (Total Organic Carbon) ug/l 9060A 06/07/13 1 Dissolved Solids ug/l 2540 C- 06/06/13 1 Arsenic ug/l /18/13 1 Cadmium U ug/l /18/13 1 Chromium ug/l /18/13 1 Lead U ug/l /18/13 1 Selenium ug/l /18/13 1 Silver U ug/l /18/13 1 Mercury U ug/l 7470A 06/04/13 1 Barium ug/l 6010B 06/11/13 1 Iron ug/l J 6010B 06/11/13 1 Manganese ug/l 6010B 06/11/13 1 Volatile Organics Benzene U ug/l 8260B 06/02/13 1 Carbon tetrachloride U ug/l 8260B 06/02/13 1 1,4-Dichlorobenzene U ug/l 8260B 06/02/13 1 1,2-Dichloroethane U ug/l 8260B 06/02/13 1 1,1-Dichloroethene U ug/l 8260B 06/02/13 1 1,1,1-Trichloroethane U ug/l 8260B 06/02/13 1 Trichloroethene U ug/l 8260B 06/02/13 1 Vinyl chloride U ug/l 8260B 06/02/13 1 Surrogate Recovery Toluene-d % Rec. 8260B 06/02/13 1 Dibromofluoromethane 104. % Rec. 8260B 06/02/ Bromofluorobenzene 100. % Rec. 8260B 06/02/13 1 Pesticides Gamma BHC U ug/l 8081 A 06/11/13 1 Pesticides Surrogates U = ND (Not Detected) RDL = Reported Detection Limit = LOQ = PQL = EQL = TRRP MQL MDL = Minimum Detection Limit = LOD = TRRP SDL Note: The reported analytical results relate only to the sample submitted. This report shall not be reproduced, except in full, without the written approval from ESC.. Reported: 06/18/13 18:25 Printed: 06/18/13 18:26 Page 12 of 20

44 12065 Lebanon Rd. Mt. Juliet, TN (615) Fax (615) Tax I.D Est REPORT OF ANALYSIS David Jaros June 18, 2013 Terracon- Little Rock, AR I-30 Bryant, AR Date Received : June 01, 2013 Description : Domtar Industries-Ashdown LF Sample ID : DUPE Collected By : Wes Williams Collection Date : 05/31/13 11:45 ESC Sample # : L Site ID : Project # : Parameter Result MDL RDL Units Qualifier Method Date Dil. Decachlorobiphenyl 77.2 % Rec A 06/11/13 1 Tetrachloro-m-xylene 91.8 % Rec A 06/11/13 1 U = ND (Not Detected) RDL = Reported Detection Limit = LOQ = PQL = EQL = TRRP MQL MDL = Minimum Detection Limit = LOD = TRRP SDL Note: The reported analytical results relate only to the sample submitted. This report shall not be reproduced, except in full, without the written approval from ESC.. Reported: 06/18/13 18:25 Printed: 06/18/13 18:26 Page 13 of 20

45 12065 Lebanon Rd. Mt. Juliet, TN (615) Fax (615) Tax I.D Est REPORT OF ANALYSIS David Jaros June 18, 2013 Terracon- Little Rock, AR I-30 Bryant, AR Date Received : June 01, 2013 Description : Domtar Industries-Ashdown LF Sample ID : FB Collected By : Wes Williams Collection Date : 05/31/13 11:55 ESC Sample # : L Site ID : Project # : Parameter Result MDL RDL Units Qualifier Method Date Dil. Chloride ug/l J /01/13 1 Fluoride U ug/l /01/13 1 Nitrate U ug/l /01/13 1 Sulfate ug/l J /01/13 1 COD U ug/l /07/13 1 Sulfide U ug/l 4500S2 06/05/13 1 TOC (Total Organic Carbon) ug/l J 9060A 06/07/13 1 Dissolved Solids ug/l J 2540 C- 06/06/13 1 Arsenic U ug/l /16/13 1 Cadmium U ug/l /16/13 1 Chromium U ug/l /16/13 1 Lead U ug/l /16/13 1 Selenium U ug/l /16/13 1 Silver U ug/l /16/13 1 Mercury U ug/l 7470A 06/04/13 1 Barium ug/l 6010B 06/11/13 1 Iron U ug/l 6010B 06/11/13 1 Manganese ug/l J 6010B 06/11/13 1 Volatile Organics Benzene U ug/l 8260B 06/02/13 1 Carbon tetrachloride U ug/l 8260B 06/02/13 1 1,4-Dichlorobenzene U ug/l 8260B 06/02/13 1 1,2-Dichloroethane U ug/l 8260B 06/02/13 1 1,1-Dichloroethene U ug/l 8260B 06/02/13 1 1,1,1-Trichloroethane U ug/l 8260B 06/02/13 1 Trichloroethene U ug/l 8260B 06/02/13 1 Vinyl chloride U ug/l 8260B 06/02/13 1 Surrogate Recovery Toluene-d % Rec. 8260B 06/02/13 1 Dibromofluoromethane 104. % Rec. 8260B 06/02/ Bromofluorobenzene 103. % Rec. 8260B 06/02/13 1 Pesticides Gamma BHC U ug/l 8081 A 06/11/13 1 Pesticides Surrogates U = ND (Not Detected) RDL = Reported Detection Limit = LOQ = PQL = EQL = TRRP MQL MDL = Minimum Detection Limit = LOD = TRRP SDL Note: The reported analytical results relate only to the sample submitted. This report shall not be reproduced, except in full, without the written approval from ESC.. Reported: 06/18/13 18:25 Printed: 06/18/13 18:26 Page 14 of 20

46 12065 Lebanon Rd. Mt. Juliet, TN (615) Fax (615) Tax I.D Est REPORT OF ANALYSIS David Jaros June 18, 2013 Terracon- Little Rock, AR I-30 Bryant, AR Date Received : June 01, 2013 Description : Domtar Industries-Ashdown LF Sample ID : FB Collected By : Wes Williams Collection Date : 05/31/13 11:55 ESC Sample # : L Site ID : Project # : Parameter Result MDL RDL Units Qualifier Method Date Dil. Decachlorobiphenyl 51.9 % Rec A 06/11/13 1 Tetrachloro-m-xylene 82.7 % Rec A 06/11/13 1 U = ND (Not Detected) RDL = Reported Detection Limit = LOQ = PQL = EQL = TRRP MQL MDL = Minimum Detection Limit = LOD = TRRP SDL Note: The reported analytical results relate only to the sample submitted. This report shall not be reproduced, except in full, without the written approval from ESC.. Reported: 06/18/13 18:25 Printed: 06/18/13 18:26 Page 15 of 20

47 12065 Lebanon Rd. Mt. Juliet, TN (615) Fax (615) Tax I.D Est REPORT OF ANALYSIS David Jaros June 18, 2013 Terracon- Little Rock, AR I-30 Bryant, AR Date Received : June 01, 2013 Description : Domtar Industries-Ashdown LF Sample ID : LEACHATE Collected By : Wes Williams Collection Date : 05/31/13 15:00 ESC Sample # : L Site ID : Project # : Parameter Result MDL RDL Units Qualifier Method Date Dil. Chloride ug/l /02/ Fluoride U ug/l /01/13 1 Nitrate U ug/l O /02/ Sulfate ug/l /02/ COD ug/l /07/ Sulfide U ug/l O 4500S2 06/05/13 10 TOC (Total Organic Carbon) ug/l 9060A 06/07/ Dissolved Solids ug/l 2540 C- 06/06/13 1 Arsenic ug/l /12/13 5 Cadmium ug/l J /12/13 5 Chromium ug/l /12/13 5 Lead U ug/l O /12/13 5 Selenium ug/l /12/13 5 Silver U ug/l O /12/13 5 Mercury ug/l 7470A 06/04/13 2 Barium ug/l 6010B 06/11/ Iron ug/l 6010B 06/11/ Manganese ug/l 6010B 06/11/ Volatile Organics Benzene U ug/l 8260B 06/04/13 1 Carbon tetrachloride U ug/l 8260B 06/04/13 1 1,4-Dichlorobenzene U ug/l 8260B 06/04/13 1 1,2-Dichloroethane U ug/l 8260B 06/04/13 1 1,1-Dichloroethene U ug/l 8260B 06/04/13 1 1,1,1-Trichloroethane U ug/l 8260B 06/04/13 1 Trichloroethene U ug/l 8260B 06/04/13 1 Vinyl chloride U ug/l 8260B 06/04/13 1 Surrogate Recovery Toluene-d % Rec. 8260B 06/04/13 1 Dibromofluoromethane 41.9 % Rec. J2 8260B 06/04/ Bromofluorobenzene 91.8 % Rec. 8260B 06/04/13 1 Pesticides Gamma BHC U ug/l O 8081 A 06/12/ Pesticides Surrogates U = ND (Not Detected) RDL = Reported Detection Limit = LOQ = PQL = EQL = TRRP MQL MDL = Minimum Detection Limit = LOD = TRRP SDL Note: The reported analytical results relate only to the sample submitted. This report shall not be reproduced, except in full, without the written approval from ESC.. Reported: 06/18/13 18:25 Printed: 06/18/13 18:26 L (SULFIDE) - diluted due to sample color L (ANIONS BY IC) - diluted due to hight Sulfate Page 16 of 20

48 12065 Lebanon Rd. Mt. Juliet, TN (615) Fax (615) Tax I.D Est REPORT OF ANALYSIS David Jaros June 18, 2013 Terracon- Little Rock, AR I-30 Bryant, AR Date Received : June 01, 2013 Description : Domtar Industries-Ashdown LF Sample ID : LEACHATE Collected By : Wes Williams Collection Date : 05/31/13 15:00 ESC Sample # : L Site ID : Project # : Parameter Result MDL RDL Units Qualifier Method Date Dil. Decachlorobiphenyl % Rec. J A 06/12/ Tetrachloro-m-xylene 4.23 % Rec. J A 06/12/ U = ND (Not Detected) RDL = Reported Detection Limit = LOQ = PQL = EQL = TRRP MQL MDL = Minimum Detection Limit = LOD = TRRP SDL Note: The reported analytical results relate only to the sample submitted. This report shall not be reproduced, except in full, without the written approval from ESC.. Reported: 06/18/13 18:25 Printed: 06/18/13 18:26 L (SULFIDE) - diluted due to sample color L (ANIONS BY IC) - diluted due to hight Sulfate Page 17 of 20

49 12065 Lebanon Rd. Mt. Juliet, TN (615) Fax (615) Tax I.D Est REPORT OF ANALYSIS David Jaros June 18, 2013 Terracon- Little Rock, AR I-30 Bryant, AR Date Received : June 01, 2013 Description : Domtar Industries-Ashdown LF Sample ID : TRIP BLANK Collected By : Wes Williams Collection Date : 05/31/13 00:00 ESC Sample # : L Site ID : Project # : Parameter Result MDL RDL Units Qualifier Method Date Dil. Volatile Organics Benzene U ug/l 8260B 06/02/13 1 Carbon tetrachloride U ug/l 8260B 06/02/13 1 1,4-Dichlorobenzene U ug/l 8260B 06/02/13 1 1,2-Dichloroethane U ug/l 8260B 06/02/13 1 1,1-Dichloroethene U ug/l 8260B 06/02/13 1 1,1,1-Trichloroethane U ug/l 8260B 06/02/13 1 Trichloroethene U ug/l 8260B 06/02/13 1 Vinyl chloride U ug/l 8260B 06/02/13 1 Surrogate Recovery Toluene-d % Rec. 8260B 06/02/13 1 Dibromofluoromethane 98.9 % Rec. 8260B 06/02/ Bromofluorobenzene 104. % Rec. 8260B 06/02/13 1 U = ND (Not Detected) RDL = Reported Detection Limit = LOQ = PQL = EQL = TRRP MQL MDL = Minimum Detection Limit = LOD = TRRP SDL Note: The reported analytical results relate only to the sample submitted. This report shall not be reproduced, except in full, without the written approval from ESC.. Reported: 06/18/13 18:25 Printed: 06/18/13 18:26 Page 18 of 20

50 Attachment A List of Analytes with QC Qualifiers Sample Work Sample Run Number Group Type Analyte ID Qualifier L WG SAMP Arsenic R P1 WG SAMP Chromium R J3 WG SAMP Selenium R J3 WG SAMP Silver R JP1 WG SAMP TOC (Total Organic Carbon) R J WG SAMP Iron R J WG SAMP Manganese R J L WG SAMP Arsenic R J WG SAMP TOC (Total Organic Carbon) R J L WG SAMP Arsenic R J WG SAMP Selenium R J WG SAMP COD R J L WG SAMP TOC (Total Organic Carbon) R J WG SAMP Iron R J WG SAMP Manganese R J WG SAMP Sulfide R J L WG SAMP COD R J WG SAMP Iron R J L WG SAMP Iron R J L WG SAMP Chloride R J WG SAMP Sulfate R J WG SAMP TOC (Total Organic Carbon) R J WG SAMP Manganese R J WG SAMP Dissolved Solids R J L WG SAMP Cadmium R J WG SAMP Lead R O WG SAMP Silver R O WG SAMP Nitrate R O WG SAMP Sulfide R O WG SAMP Gamma BHC R O WG SAMP Decachlorobiphenyl R J7 WG SAMP Tetrachloro-m-xylene R J7 WG SAMP Dibromofluoromethane R J2 Page 19 of 20

51 Attachment B Explanation of QC Qualifier Codes Qualifier Meaning J J2 J3 J7 O P1 (EPA) - Estimated value below the lowest calibration point. Confidence correlates with concentration. Surrogate recovery limits have been exceeded; values are outside lower control limits The associated batch QC was outside the established quality control range for precision. Surrogate recovery cannot be used for control limit evaluation due to dilution. (ESC) Sample diluted due to matrix interferences that impaired the ability to make an accurate analytical determination. The detection limit is elevated in order to reflect the necessary dilution. RPD value not applicable for sample concentrations less than 5 times the reporting limit. Qualifier Report Information ESC utilizes sample and result qualifiers as set forth by the EPA Contract Laboratory Program and as required by most certifying bodies including NELAC. In addition to the EPA qualifiers adopted by ESC, we have implemented ESC qualifiers to provide more information pertaining to our analytical results. Each qualifier is designated in the qualifier explanation as either EPA or ESC. Data qualifiers are intended to provide the ESC client with more detailed information concerning the potential bias of reported data. Because of the wide range of constituents and variety of matrices incorporated by most EPA methods,it is common for some compounds to fall outside of established ranges. These exceptions are evaluated and all reported data is valid and useable "unless qualified as 'R' (Rejected)." Definitions Accuracy - The relationship of the observed value of a known sample to the true value of a known sample. Represented by percent recovery and relevant to samples such as: control samples, matrix spike recoveries, surrogate recoveries, etc. Precision - The agreement between a set of samples or between duplicate samples. Relates to how close together the results are and is represented by Relative Percent Differrence. Surrogate - Organic compounds that are similar in chemical composition, extraction, and chromotography to analytes of interest. The surrogates are used to determine the probable response of the group of analytes that are chemically related to the surrogate compound. Surrogates are added to the sample and carried through all stages of preparation and analyses. TIC - Tentatively Identified Compound: Compounds detected in samples that are not target compounds, internal standards, system monitoring compounds, or surrogates. Page 20 of 20

52 Summary of Remarks For Samples Printed 06/18/13 at 18:26:32 TSR Signing Reports: 134 RX - Priority Rush Run As, Sb, & Tl GW by 6020 Sample: L Account: GENENLAR Received: 06/01/13 09:30 Due Date: 06/17/13 00:00 RPT Date: 06/18/13 18:25 Sample: L Account: GENENLAR Received: 06/01/13 09:30 Due Date: 06/19/13 00:00 RPT Date: 06/18/13 18:25 Sample: L Account: GENENLAR Received: 06/01/13 09:30 Due Date: 06/19/13 00:00 RPT Date: 06/18/13 18:25 Sample: L Account: GENENLAR Received: 06/01/13 09:30 Due Date: 06/19/13 00:00 RPT Date: 06/18/13 18:25 Sample: L Account: GENENLAR Received: 06/01/13 09:30 Due Date: 06/19/13 00:00 RPT Date: 06/18/13 18:25 Sample: L Account: GENENLAR Received: 06/01/13 09:30 Due Date: 06/19/13 00:00 RPT Date: 06/18/13 18:25 Sample: L Account: GENENLAR Received: 06/01/13 09:30 Due Date: 06/17/13 00:00 RPT Date: 06/18/13 18:25 Sample: L Account: GENENLAR Received: 06/01/13 09:30 Due Date: 06/17/13 00:00 RPT Date: 06/18/13 18:25 Ph not adjusted due to matrix. Samples PH is >12 Sample: L Account: GENENLAR Received: 06/01/13 09:30 Due Date: 06/17/13 00:00 RPT Date: 06/18/13 18:25

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