Dear. questions concerning the subject report, please feel free to contact me or David. cc: Kevin

Transcription

1 Dear Clearwater Paper Corporation, Terracon Consultants, Inc. is pleased to submit Second 2013 Semi-Annual Groundwater Monitoring Report for the Corporation Class 3N questions concerning the subject report, please feel free to contact me or David cc: Kevin Clearwater Paper Corp. (wl one hardcopy and 1 CD copy enclosure) Terracon Consultants, Inc. p [501]847-!) South F [501] Bryant, AR terra con.com ~ e ~ ;"' ~~ ;;"' ~ 1 ~Gentewahi:cal ~ Euiunmen al Construction lllhte'rials e l'i'aeilities

2 Second 3 Groundwater Monitoring Report Clearwater Paper Corporation Class 3N Landfill McGehee, Arkansas Prepared for Corporation Class 3N McGehee, Arkansas For Submittal to Arkansas Department of Environmental Quality Waste Division I am a qualified groundwater scientist who has received a baccalaureate or "'"'""'"''""' degree in the natural sciences. I have sufficient training and experience in lnrnm~r.,.r hydrology and related fields, as demonstrated by state registration and completion of accredited university courses, which enable me to make sound professional judgments groundwater monitoring and contaminant fate and transport. herein are based upon the statistical program SANITAS for GroundwaterrM that is relevant EPA Guidance, ASTM Standards, and in accordance with Arkansas Environmental Quality Solid Waste Regulation 22. I further certify that this report "'"''n"''r""" by me or by a subordinate working under my direction.

3 Second Half 2013 Groundwater Monitoring Report CLEARWATER PAPER CORPORATION CLASS 3N LANDFILL SOLID WASTE PERMIT 0102-S3N-R3 AFIN # TERRACON PROJECT B November 20, 2013 Prepared for: Clearwater Paper Corporation P.O. Box 727 McGehee, AR Prepared by: Terracon Consultants, Inc. Little Rock, Arkansas

4 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 SECOND 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

5 1.0 INTRODUCTION SECOND HALF 2013 GROUNDWATER MONITORING REPORT CLEARWATER PAPER CORPORATION CLASS 3N LANDFILL ADEQ SOLID WASTE PERMIT 0102-S3N-R3 TERRACON PROJECT B Clearwater Paper Corporation (formerly Potlatch Forest Productions) operates a Class 3N Landfill under Solid Waste Permit Number 0102-S3N-R3, which was issued under the direction of the Arkansas Department of Environmental Quality (ADEQ) on September 24, The six groundwater monitoring wells installed at the Landfill have been monitored for the parameters listed in Permit Condition No. 17 of the Clearwater Paper Corp. Class 3N Permit. Terracon Consultants, Inc. (Terracon) is currently performing the groundwater sampling at the facility. Beginning with the First Half 2008 event, laboratory analyses are conducted by Environmental Science Corporation in Nashville, Tennessee. This report summarizes the Second Half 2013 semi-annual detection monitoring event. 1.1 Site Location The Clearwater Paper Corp. Class 3N Landfill is located along Highway 4, approximately 8 miles north of Arkansas City and 16 miles northeast of McGehee, Arkansas. The Landfill occupies 40 acres of land in Section 30, Township 11 South, Range 1 West, in Desha County, Arkansas. FIGURE 1 depicts the geographic location of the Landfill. 1.2 Site Groundwater Monitoring System There are currently six groundwater monitoring wells (MW-1A, MW-2A, MW-3AR, MW-4A, MW-6A, and MW-7) surrounding the Landfill utilized for groundwater monitoring (See FIGURE 2). 2.0 GROUNDWATER SAMPLING The Second Half 2013 semi-annual sampling event at the Clearwater Paper Corp. Class 3N Landfill was conducted on September 10, Representatives of Terracon Consultants, Inc. collected samples from the six groundwater monitoring wells. The procedures used to obtain 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 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 Reliable Responsive Convenient Innovative 1

6 Second Half 2013 Groundwater Monitoring Report Clearwater Paper Corporation McGee, Arkansas November 20, 2013 Terracon Project No B casing and this information was utilized to calculate the volume of water in the well. Since nondedicated 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 cleaned with de-ionized water before and after use at each well. 2.2 Well Evacuation The water in a well prior to sampling may not be representative of in-situ groundwater quality. Therefore, the field representative purged a minimum of three casing volumes from the well at a rate that did not excessively agitate the recharge water. A Grundfos Redi-Flo 2 submersible pump was used to evacuate each well. The evacuation procedure helped to insure that all well water was replaced by fresh formation water upon completion of the process. Since the pumping equipment used was non-dedicated, procedures were instituted to insure the samples were not contaminated. The pump and tubing are constructed of inert materials and were rinsed and flushed with de-ionized water prior to use 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. 2.3 Equipment Decontamination Procedure All equipment that was used in the groundwater monitoring wells and had contact with the samples was thoroughly cleaned before use. This equipment included a water level probe and a submersible pump. First, 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 placed in a plastic bag to reduce contact with air when transported into the field. After a water level was measured, a paper towel was soaked with distilled water and as the probe was reeled up the tape and probe were wiped clean. The submersible pump was flushed with potable water and phosphate-free detergent prior to arrival on 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 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. In order to minimize the possibility of sample contamination the Terracon field representative: Made sure clean sampling equipment was not placed directly on the ground or other contaminated surfaces prior to insertion into the well. Reliable Responsive Convenient Innovative 2

7 Second Half 2013 Groundwater Monitoring Report Clearwater Paper Corporation McGee, Arkansas November 20, 2013 Terracon Project No B Gently lowered and retrieved sampling equipment in order to prevent undue disturbance of the water column. Transferred samples to the appropriate containers in a manner that minimized agitation and aeration. Samples were collected and containerized in the order of volatilization sensitivity of the parameters. The list of parameters analyzed is presented in TABLE 1. TABLE 1 CONSTITUENTS FOR DETECTION MONITORING GROUNDWATER SULFATE CHROMIUM COD CHLORIDE TDS FLOURIDE NITRATE (as N) SULFIDE TOC ARSENIC BARIUM CADMIUM IRON LEAD MANGANESE PHOSPHORUS COPPER NICKEL ZINC POTASSIUM ph (field) TEMPERATURE (field) SPECIFIC CONDUCTANCE (field) TURBIDITY (field) Reliable Responsive Convenient Innovative 3

8 Second Half 2013 Groundwater Monitoring Report Clearwater Paper Corporation McGee, Arkansas November 20, 2013 Terracon Project No B 2.5 Field Testing Some of the parameters evaluated are physically or chemically unstable and were measured prior to sample collection by the field representative using a field test kit. Examples of unstable elements or properties include ph and temperature. Although specific conductance (inverse of electrical resistance) of a substance is relatively stable this parameter was also measured in the field. This information was recorded on standard Terracon Groundwater Monitoring Sampling Records included in APPENDIX A. A summary of the field measurements for the Second Half 2013 sampling event is presented in TABLE 2. TABLE 2 FIELD MEASUREMENTS Well # Sample Date Datum Elevation (FMSL) Depth to Water (ft.) Water Surface Elevation (FMSL) Temp (ºC) ph (SU) Specific Conductance (us/cm) Turbidity (NTU) MW-1A 9/10/ MW-2A 9/10/ MW-3AR 9/10/ MW-4A 9/10/ MW-6A 9/10/ MW-7 9/10/ Field QA/QC Procedures For QA/QC purposes, a field blank was collected and labeled FB. The procedure utilized to collect the field blank consisted of pouring distilled water directly from the distilled water container into the sample containers. The field representative prepared the field blank for all the required monitoring parameters. The field blank was used to verify that the sample collection and handling process did not affect the quality of the samples. A duplicate sample of MW-1A was collected and labeled Duplicate. Procedures utilized for collecting the duplicate sample were identical to the sampling protocol detailed in Section 2.4 and collected at the same time as the MW-1A samples. 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 includes the name of the facility, collector's signatures, sample location, 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. Reliable Responsive Convenient Innovative 4

9 Second Half 2013 Groundwater Monitoring Report Clearwater Paper Corporation McGee, Arkansas November 20, 2013 Terracon Project No B Attached to the sample container at the time of collection is the sample label. 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, and sample collector s name or initials. Documentation for the sample collection process and other important information was recorded on the Environmental Science Corp. Chain-of-Custody form. The standard format includes the date, time, and type of sample collected, code for sample analysis, sample number, and sampling location. 2.8 Sample Preservation In accordance with the facility Sampling and Analysis Plan, the samples were placed in an ice chest for preservation and cooled to approximately 4 degrees Celsius. Custody was retained by the Terracon representative from the time of collection until shipment to Environmental Science Corp. Laboratory analytical results and a copy of the Chain-of-Custody form are included in APPENDIX B. 3.0 SECOND HALF 2013 SEMI-ANNUAL SAMPLING EVENT This report covers the Second Half 2013 groundwater monitoring event conducted September 10, Results of this sampling event are summarized in the following sections, tables, and appendices. In addition, the historical groundwater data was evaluated statistically to determine if significant differences exist for detected concentrations in each monitoring well. 3.1 Groundwater Elevation & Flow Direction There are currently six monitoring wells located around the Landfill area. Water level elevations were measured for monitoring wells MW-1A, MW-2A, MW-3AR, MW-4A, MW-6A, and MW-7. TABLE 2 lists the results of the water level and field measurements for the Second Half 2013 sampling event. The highest elevation was measured in monitoring well MW-7, which is located south of the Landfill. This well is downgradient of the Landfill operations. The lowest groundwater elevation measured during this event occurred in monitoring well MW-1A, which is located west of the Landfill and downgradient of Landfill operations. The water level data for the Second Half 2013 sampling event indicates groundwater flows to the north-northwest across the site (See FIGURE 2). Based on this flow relationship, monitoring wells MW-3AR and MW-6A are upgradient of the Landfill, while MW-1A, MW-2A, MW-4A and MW-7 are downgradient of the Landfill. Reliable Responsive Convenient Innovative 5

10 Second Half 2013 Groundwater Monitoring Report Clearwater Paper Corporation McGee, Arkansas November 20, 2013 Terracon Project No B Based on the principles of Darcian flow, the average linear velocities (groundwater flow rate) during the Second Half 2013 event were calculated utilizing the following equation: Where: V X = (K*I) / N E 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 (decimal). Hydraulic gradient was calculated for the Second Half 2013 sampling event by comparing upgradient well MW-3AR to downgradient well MW-1A. The change in head of 0.12 feet between the two wells over a distance of approximately 1,996 feet produces a hydraulic gradient of 6.01x10-5 (ft/ft). Hydraulic conductivity of the fine silty sand uppermost aquifer on site was taken from the Geotechnical and Groundwater Study for Clearwater Paper Corp. (formerly Potlatch) Class 3N Landfill, prepared by Grubbs, Garner & Hoskyn, Inc. in May The average hydraulic conductivity of the uppermost aquifer (based on field slug tests) is estimated to be 5.0x10-3 cm/sec. An effective porosity value of 27 percent was utilized and is representative of materials identified as fine silty sand. A porosity of 30 percent was determined to represent fine sand materials according to the porosity ranges found in Applied Hydrogeology (pg. 86, Fetter, C.W., 1994). Effective porosity is always equal to or less than total porosity. Therefore, utilizing 90 percent of the total porosity is a conservative approach, because part of the total porosity is occupied by static fluid held to the mineral surface by surface tension. The average linear velocity (groundwater flow rate), utilizing a hydraulic conductivity of 5.0x10-3 cm/sec, a hydraulic gradient of 6.01x10-5 ft/ft, and an effective porosity of 0.27 is 1.11x10-6 cm/sec. 3.2 Groundwater Quality V x = [(5.0x10-3 cm/sec)(6.01x10-5 )]/(0.27) = 1.11x10-6 cm/sec APPENDIX C contains the historical groundwater analytical results compiled since the first round of background samples were collected on January 15, This data was analyzed for increasing trends and used to statistically determine if significant differences exist between background and compliance concentrations for each of the wells. The results of the statistical analysis generated utilizing the SANITAS TM for Groundwater statistical program are displayed 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 Reliable Responsive Convenient Innovative 6

11 Second Half 2013 Groundwater Monitoring Report Clearwater Paper Corporation McGee, Arkansas November 20, 2013 Terracon Project No B 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. COD at MW-3AR and zinc and lead at MW-6A were calculated to be statistical outliers during the Second Half 2013 sampling event. Outlier analysis summary tables are available in APPENDIX D 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 Second 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 Clearwater Paper Corp. Class 3N Landfill, 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 Reliable Responsive Convenient Innovative 7

12 Second Half 2013 Groundwater Monitoring Report Clearwater Paper Corporation McGee, Arkansas November 20, 2013 Terracon Project No B 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 transformednormal distribution. During parametric prediction interval analysis, the mean and the standard deviation are calculated for the raw or transformed background data. 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 Second Half 2013 sampling event are presented in APPENDIX D Results of the Statistical Evaluation Based on statistical calculations performed with the SANITAS TM for Groundwater program utilizing intra-well methods, it was determined that statistically significant increases (SSIs) during the Second Half 2013 event were as follows: *Outlier WELL # MW-1A MW-3AR Statistically Significant Increase (SSI) TDS COD* Initial SSIs during this event include TDS at MW-1A and COD at MW-3AR. These SSIs should not be considered valid unless verified by the next sampling event. It should be noted that COD at MW-3AR was calculated to be a statistical outlier. Reliable Responsive Convenient Innovative 8

13 Second Half 2013 Groundwater Monitoring Report Clearwater Paper Corporation McGee, Arkansas November 20, 2013 Terracon Project No B The SSIs reported for potassium and iron at MW-A; nickel at MW-2A; and copper at MW-7 during the previous sampling event were not verified by the results of the Second Half 2013 sampling event Comparison to Established Water Quality Standards The laboratory results for the Second Half 2013 sampling event are summarized in TABLE 3. TABLE 3 presents a comparison of parameter concentrations to applicable Primary Drinking Water Standards-Maximum Contaminant Levels (MCLs) and Secondary Drinking Water Standards (SDWS). The SDWS are set primarily for aesthetic reasons. Constituents covered by these regulations are those which may adversely affect the aesthetic qualities of drinking water such as taste, odor, color, and appearance, and are not federally enforced. The EPA Primary Drinking Water Standard-Maximum Contaminant Level (MCL) for arsenic was exceeded at MW-7 (0.021 mg/l) during the Second Half 2013 sampling event. Please note that arsenic at MW-7 was not calculated to be an SSI. As stated in previous groundwater reports, sampling and laboratory analyses were performed in September 2005 to characterize the three waste streams produced by the Clearwater Paper Corp. facility, identified as Green Liquor Dregs, Wastewater Sludge, and Lime Mud. Analyses were also performed on eight soil samples collected near the Landfill from either farm land or grassy areas where no industrial activity has occurred. The analytical results for the Green Liquor Dregs, Wastewater Sludge, and Lime Mud wastes were reported as non-detect for arsenic. However, each of the eight soil samples showed detections of arsenic in concentrations that range from 5.8 mg/kg to 9.7 mg/kg. The presence of arsenic in area soil samples and the fact that arsenic was not detected in the three waste stream samples strongly suggests that low level detections of arsenic periodically detected in groundwater samples are the result of arsenic leaching from area soils QA/QC Comparison A QA/QC comparison for the Second Half 2013 sampling event is presented in TABLE 3. There appears to be little variability in the duplicate groundwater quality analysis during this event. The field blank had a reported detection of TOC which was reported as J value or estimated concentration between the method detection level (MDL) and the practical quantitation level (PQL). Reliable Responsive Convenient Innovative 9

14 Second Half 2013 Groundwater Monitoring Report Clearwater Paper Corporation McGee, Arkansas November 20, 2013 Terracon Project No B Well# TABLE 3 INORGANIC QUALITY RESULTS AND QA/QC COMPARISON As Ba Cd Chld COD Cr MW-1A < J < Duplicate (MW-1A) < < MW-2A < < MW-3AR J 0.38 < < MW-4A < < MW-6A < < MW < < Fe Field Blank <0.001 <0.005 < <1 <10 <0.010 <0.10 Leachate < EPA Standards 0.01* 2* 0.005* 250** * 0.3** Mn Nitrate Pb SO2 SO4 TDS TOC Well# (mg/l) MW-1A 1.3 <0.10 <0.005 < Duplicate (MW-1A) 1.3 < J < MW-2A 1.3 <0.10 <0.005 < MW-3AR 1.0 <0.10 <0.005 < MW-4A 3.6 <0.10 <0.005 < MW-6A 1.2 < J < MW <0.10 <0.005 < Field Blank <0.010 <0.10 <0.005 <0.050 <5 < J Leachate 0.21 <0.10 < ,000 3,600 EPA Standards 0.05** 10* 0.015* ** 500** --- Fluoride Phosphorus Cu Zn Ni K ph Well# (SU) MW-1A J J < Duplicate (MW-1A) J <0.010 < NA MW-2A <0.002 <0.010 < MW-3AR J <0.010 < MW-4A J <0.010 < MW-6A J J < MW J <0.010 < Field Blank <0.10 <0.10 <0.002 <0.010 <0.020 <0.5 NA Leachate EPA Standards 4* --- 1** 5** ** *Primary Drinking Water Standard-Maximum Containment level (MCL). **Secondary Drinking Water Standard (SDWS). Values in bold exceed EPA Standards. J value is an estimated concentration between the method detection level (MDL) and the practical quantitation level (PQL). Reliable Responsive Convenient Innovative 10

15 Second Half 2013 Groundwater Monitoring Report Clearwater Paper Corporation McGee, Arkansas November 20, 2013 Terracon Project No B 4.0 CONCLUSIONS Based on the results of the Second Half 2013 groundwater sampling and analysis, Terracon reached the following conclusions: Groundwater Flow: The water level data for the Second Half 2013 sampling event indicates groundwater flows to the north-northwest across the site (See FIGURE 2). Based on this flow relationship, monitoring wells MW-3AR and MW-6A are upgradient of the Landfill, while MW-1A, MW-2A, MW-4A and MW-7 are downgradient of the Landfill. As described in Section 3.1, the groundwater flow rate (average linear velocity) was calculated to be 1.11x10-6 cm/sec. Analytical Results: The EPA Primary Drinking Water Standard-Maximum Contaminant Level (MCL) for arsenic was exceeded at MW-7 (0.021 mg/l) during the Second Half 2013 sampling event. Please note that arsenic at MW-7 was not calculated to be an SSI. As stated in previous groundwater reports, sampling and laboratory analyses were performed in September 2005 to characterize the three waste streams produced by the Clearwater Paper Corp. facility, identified as Green Liquor Dregs, Wastewater Sludge, and Lime Mud. Analyses were also performed on eight soil samples collected near the Landfill from either farm land or grassy areas where no industrial activity has occurred. The analytical results for the Green Liquor Dregs, Wastewater Sludge, and Lime Mud wastes were reported as non-detect for arsenic. However, each of the eight soil samples showed detections of arsenic in concentrations that range from 5.8 mg/kg to 9.7 mg/kg. The presence of arsenic in area soil samples and the fact that arsenic was not detected in the three waste stream samples strongly suggests that low level detections of arsenic periodically detected in groundwater samples are the result of arsenic leaching from area soils. A QA/QC comparison for the Second Half 2013 sampling event is presented in TABLE 3. There appears to be little variability in the duplicate groundwater quality analysis during this event. The field blank had a reported detection of TOC which was reported as J value or estimated concentration between the method detection level (MDL) and the practical quantitation level (PQL). Reliable Responsive Convenient Innovative 11

16 Second Half 2013 Groundwater Monitoring Report Clearwater Paper Corporation McGee, Arkansas November 20, 2013 Terracon Project No B Statistical Evaluation: Based on statistical calculations performed with the SANITAS TM for Groundwater program utilizing intra-well methods, it was determined that statistically significant increases (SSIs) during the Second Half 2013 event were as follows: *Outlier WELL # MW-1A MW-3AR Statistically Significant Increase (SSI) TDS COD* Initial SSIs during this event include TDS at MW-1A and COD at MW-3AR. These SSIs should not be considered valid unless verified by the next sampling event. It should be noted that COD at MW-3AR was calculated to be a statistical outlier. The SSIs reported for potassium and iron at MW-A; nickel at MW-2A; and copper at MW-7 during the previous sampling event were not verified by the results of the Second Half 2013 sampling event. The next semi-annual sampling event is scheduled for March Reliable Responsive Convenient Innovative 12

17 FIGURES

18

19

20 APPENDIX A

21 GROUNDWATER MONITORING SAMPLING RECORD PROJECT: Clearwater Paper Corp SAMPLING LOCATION: MW-2A WEATHER CONDITIONS: Clear, 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 = 4.15 Gallons WATER CONDITION BEFORE WELL PURGING: APPEARANCE: Turbid ODOR: None WELL PURGING DATE: 9/10/13 PURGING METHOD: Grundfos pump TIME START PURGING: 1445 TIME END PURGING: 1515 VOLUME PURGED (Try for 3 Volumes): 15.0 Gallons APPEARANCE: Clear ODOR: None WELL PURGED DRY? No SAMPLING DATE: 9/10/13 SAMPLING METHOD: Grundfos pump TIME START SAMPLING: 1515 TIME END SAMPLING: 1520 FIELD MEASUREMENTS: (Need at least 3 consecutive readings w/in 10% for stabilization) TIME RATE GALLONS TEMP ph CONDUCTANCE TURBIDITY C 6.70 SU S/cm 1.12 NTU C 6.77 SU S/cm 0.96 NTU C 6.76 SU S/cm 0.96 NTU FIELD SAMPLE PRESERVATION: Ice CONTAINER HANDLING: Terracon Consultants, Inc. COMMENTS:

22 GROUNDWATER MONITORING SAMPLING RECORD PROJECT: Clearwater Paper Corp SAMPLING LOCATION: MW-1A WEATHER CONDITIONS: Clear, 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 = 4.0 Gallons WATER CONDITION BEFORE WELL PURGING: APPEARANCE: Turbid ODOR: None WELL PURGING DATE: 9/10/13 PURGING METHOD: Grundfos pump TIME START PURGING: 1150 TIME END PURGING: 1205 VOLUME PURGED (Try for 3 Volumes): 12.0 Gallons APPEARANCE: Clear ODOR: None WELL PURGED DRY? No SAMPLING DATE: 9/10/13 SAMPLING METHOD: Grundfos pump TIME START SAMPLING: 1205 TIME END SAMPLING: 1210 FIELD MEASUREMENTS: (Need at least 3 consecutive readings w/in 10% for stabilization) TIME RATE GALLONS TEMP ph CONDUCTANCE TURBIDITY C 6.12 SU 1896 S/cm 158 NTU C 6.18 SU 1857 S/cm 8.24 NTU C 6.24 SU S/cm 3.61 NTU FIELD SAMPLE PRESERVATION: Ice CONTAINER HANDLING: Terracon Consultants, Inc. COMMENTS: Field Blank at 1200; Duplicate at 1215

23 GROUNDWATER MONITORING SAMPLING RECORD PROJECT: Clearwater Paper Corp SAMPLING LOCATION: MW-3AR WEATHER CONDITIONS: Clear, 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 = 2.7 Gallons WATER CONDITION BEFORE WELL PURGING: APPEARANCE: Turbid ODOR: None WELL PURGING DATE: 9/10/13 PURGING METHOD: Grundfos pump TIME START PURGING: 1625 TIME END PURGING: 1645 VOLUME PURGED (Try for 3 Volumes): 20.0 Gallons APPEARANCE: Clear ODOR: None WELL PURGED DRY? No SAMPLING DATE: 9/10/13 SAMPLING METHOD: Grundfos pump TIME START SAMPLING: 1645 TIME END SAMPLING: 1650 FIELD MEASUREMENTS: (Need at least 3 consecutive readings w/in 10% for stabilization) TIME RATE GALLONS TEMP ph CONDUCTANCE TURBIDITY C 6.49 SU 1034 µs/cm 16.7 NTU C 6.67 SU 1034 µs/cm 11.4 NTU C 6.80 SU 1030 µs/cm 6.83 NTU C 6.82 SU 1028 µs/cm 5.51 NTU FIELD SAMPLE PRESERVATION: Ice CONTAINER HANDLING: Terracon Consultants, Inc. COMMENTS:

24 GROUNDWATER MONITORING SAMPLING RECORD PROJECT: Clearwater Paper Corp SAMPLING LOCATION: MW-4A WEATHER CONDITIONS: Clear, 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: O.K. 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 = 4.28 Gallons WATER CONDITION BEFORE WELL PURGING: APPEARANCE: Turbid ODOR: None WELL PURGING DATE: 9/10/13 PURGING METHOD: Grundfos pump TIME START PURGING: 1240 TIME END PURGING: 1255 VOLUME PURGED (Try for 3 Volumes): 15.0 gallons APPEARANCE: Clear ODOR: None WELL PURGED DRY? No SAMPLING DATE: 9/10/13 SAMPLING METHOD: Grundfos pump TIME START SAMPLING: 1255 TIME END SAMPLING: 1300 FIELD MEASUREMENTS: (Need at least 3 consecutive readings w/in 10% for stabilization) TIME RATE GALLONS TEMP ph CONDUCTANCE TURBIDITY C 6.19 SU S/cm 10.6 NTU C 6.24 SU S/cm 9.59 NTU C 6.21 SU S/cm 3.11 NTU FIELD SAMPLE PRESERVATION: Ice CONTAINER HANDLING: Terracon Consultants, Inc. COMMENTS:

25 GROUNDWATER MONITORING SAMPLING RECORD PROJECT: Clearwater Paper Corp SAMPLING LOCATION: MW-6A WEATHER CONDITIONS: Clear, 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 = 3.95 Gallons WATER CONDITION BEFORE WELL PURGING: APPEARANCE: Turbid ODOR: None WELL PURGING DATE: 9/10/13 PURGING METHOD: Grundfos pump TIME START PURGING: 1530 TIME END PURGING: 1610 VOLUME PURGED (Try for 3 Volumes): 20.0 APPEARANCE: Clear ODOR: None WELL PURGED DRY? No SAMPLING DATE: 9/10/13 SAMPLING METHOD: Grundfos pump TIME START SAMPLING: 1610 TIME END SAMPLING: 1615 FIELD MEASUREMENTS: (Need at least 3 consecutive readings w/in 10% for stabilization) TIME RATE GALLONS TEMP ph CONDUCTANCE TURBIDITY C 6.75 SU S/cm 90.1 NTU C 6.73 SU S/cm 24.2 NTU C 6.72 SU S/cm 16.1 NTU C 6.64 SU S/cm 6.62 NTU FIELD SAMPLE PRESERVATION: Ice CONTAINER HANDLING: Terracon Consultants, Inc. COMMENTS:

26 GROUNDWATER MONITORING SAMPLING RECORD PROJECT: Clearwater Paper Corp SAMPLING LOCATION: MW-7 WEATHER CONDITIONS: Clear, 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): 42.0 feet VOLUME OF WATER IN WELL: V = x [TD-WD(feet)] x [Well Diameter (inches)] 2 = 2.6 Gallons WATER CONDITION BEFORE WELL PURGING: APPEARANCE: Turbid ODOR: None WELL PURGING DATE: 9/10/13 PURGING METHOD: Grundfos pump TIME START PURGING: 1310 TIME END PURGING: 1400 VOLUME PURGED (Try for 3 Volumes): 25.0 Gallons APPEARANCE: Clear ODOR: None WELL PURGED DRY? No SAMPLING DATE: 9/10/13 SAMPLING METHOD: Grundfos pump TIME START SAMPLING: 1400 TIME END SAMPLING: 1405 FIELD MEASUREMENTS: (Need at least 3 consecutive readings w/in 10% for stabilization) TIME RATE GALLONS TEMP ph CONDUCTANCE TURBIDITY C 6.43 SU S/cm 22.7 NTU C 6.80 SU S/cm 17.4 NTU C 7.03 SU S/cm 9.06 NTU C 7.12 SU S/cm 9.51 NTU C 7.14 SU S/cm 7.27 NTU FIELD SAMPLE PRESERVATION: Ice CONTAINER HANDLING: Terracon Consultants, Inc. COMMENTS:

27 GROUNDWATER MONITORING SAMPLING RECORD PROJECT: Clearwater Paper Corp SAMPLING LOCATION: Leachate WEATHER CONDITIONS: Clear, 95 F MONITORING WELL CONDITION: WELL LOCKED? N/A WELL NUMBER LABELED? N/A CASING CONDITION: N/A DATUM FOR WATER DEPTH MEASUREMENT: N/A GENERAL WELL EXTERIOR/INTERIOR CONDITIONS: N/A DECON FIELD EQUIPMENT: N/A WATER DEPTH (WD): N/A TOTAL DEPTH OF WELL (TD): N/A VOLUME OF WATER IN WELL: V = x [TD-WD(feet)] x [Well Diameter (inches)] 2 = N/A Gallons WATER CONDITION BEFORE WELL PURGING: APPEARANCE: NA ODOR: Yes WELL PURGING DATE: NA PURGING METHOD: N/A TIME START PURGING: N/A TIME END PURGING: N/A VOLUME PURGED (Try for 3 Volumes): N/A APPEARANCE: Turbid ODOR: Yes WELL PURGED DRY? N/A SAMPLING DATE: 9/10/13 SAMPLING METHOD: Disposable bailer TIME START SAMPLING: 1425 TIME END SAMPLING: 1435 FIELD MEASUREMENTS: (Need at least 3 consecutive readings w/in 10% for stabilization) TIME RATE GALLONS TEMP ph CONDUCTANCE TURBIDITY C 7.64 SU S/cm 34.6 NTU FIELD SAMPLE PRESERVATION: Ice CONTAINER HANDLING: Terracon Consultants, Inc. COMMENTS:

28 APPENDIX B

29 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 September 24, 2013 Report Number: L Samples Received: 09/12/13 Client Project: Description: Clearwater Paper Corporation 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 4

30 REPORT OF ANALYSIS David Jaros September 24, 2013 Terracon- Little Rock, AR I-30 Bryant, AR Date Received : September 12, 2013 Description : Clearwater Paper Corporation Sample ID : LEACHATE Collected By : Wes Williams Collection Date : 09/10/13 14: Lebanon Rd. Mt. Juliet, TN (615) Fax (615) Tax I.D Est ESC Sample # : L Site ID : Project # : Parameter Result MDL RDL Units Qualifier Method Date Dil. Chloride ug/l /12/13 20 Fluoride ug/l /12/13 1 Nitrate U ug/l /12/13 1 Sulfate ug/l /12/13 20 COD ug/l /17/13 10 Phosphorus,Total ug/l /19/13 5 Sulfide ug/l 4500S2 09/17/ TOC (Total Organic Carbon) ug/l 9060A 09/17/ Dissolved Solids ug/l 2540 C- 09/15/13 1 Arsenic ug/l /18/13 5 Cadmium U ug/l O /18/13 5 Copper ug/l /18/13 5 Zinc ug/l /18/13 5 Barium ug/l 6010B 09/24/13 3 Chromium ug/l 6010B 09/24/13 3 Iron ug/l J 6010B 09/24/13 3 Lead U ug/l O 6010B 09/24/13 3 Manganese ug/l 6010B 09/24/13 3 Nickel ug/l 6010B 09/24/13 3 Potassium ug/l 6010B 09/24/13 3 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: 09/24/13 11:07 Printed: 09/24/13 11:08 Page 2 of 4

31 Attachment A List of Analytes with QC Qualifiers Sample Work Sample Run Number Group Type Analyte ID Qualifier L WG SAMP Cadmium R O WG SAMP Iron R J WG SAMP Lead R O Page 3 of 4

32 Attachment B Explanation of QC Qualifier Codes Qualifier Meaning J O (EPA) - Estimated value below the lowest calibration point. Confidence correlates with concentration. (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. 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 4 of 4

33 Summary of Remarks For Samples Printed 09/24/13 at 11:08:03 TSR Signing Reports: 134 R5 - Desired TAT Sample: L Account: GENENLAR Received: 09/12/13 09:00 Due Date: 09/19/13 00:00 RPT Date: 09/24/13 11:07

34

35 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 Wednesday September 25, 2013 Report Number: L Samples Received: 09/12/13 Client Project: Description: Clearwater Paper Corporation 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 7

36 REPORT OF ANALYSIS David Jaros September 25, 2013 Terracon- Little Rock, AR I-30 Bryant, AR Date Received : September 12, 2013 Description : Clearwater Paper Corporation Sample ID : LEACHATE Collected By : Wes Williams Collection Date : 09/10/13 14: Lebanon Rd. Mt. Juliet, TN (615) Fax (615) Tax I.D Est ESC Sample # : L Site ID : Project # : LEACHATE Parameter Result MDL RDL Units Qualifier Method Date Dil. Fluoride U ug/l /18/13 1 COD ug/l /17/13 10 ph 8.7 su T8 9040C 09/18/13 1 Specific Conductance umhos/cm 9050A 09/19/13 1 TOC (Total Organic Carbon) ug/l 9060A 09/17/ Turbidity NTU 2130 B- 09/12/13 1 Dissolved Solids ug/l 2540 C- 09/15/13 1 Selenium ug/l J /15/ Mercury ug/l JT2 7470A 09/16/13 2 Barium ug/l 6010B 09/24/13 1 Chromium ug/l 6010B 09/24/13 1 Iron ug/l 6010B 09/24/13 1 Lead U ug/l 6010B 09/24/13 1 Silver ug/l J 6010B 09/24/13 1 Volatile Organics Acetone ug/l J 8260B 09/15/13 1 Acrolein U ug/l 8260B 09/15/13 1 Acrylonitrile U ug/l 8260B 09/15/13 1 Benzene U ug/l 8260B 09/15/13 1 Bromobenzene U ug/l 8260B 09/15/13 1 Bromodichloromethane U ug/l 8260B 09/15/13 1 Bromoform U ug/l 8260B 09/15/13 1 Bromomethane U ug/l 8260B 09/15/13 1 n-butylbenzene U ug/l 8260B 09/15/13 1 sec-butylbenzene U ug/l 8260B 09/15/13 1 tert-butylbenzene U ug/l 8260B 09/15/13 1 Carbon tetrachloride U ug/l 8260B 09/15/13 1 Chlorobenzene U ug/l 8260B 09/15/13 1 Chlorodibromomethane U ug/l 8260B 09/15/13 1 Chloroethane U ug/l 8260B 09/15/ Chloroethyl vinyl ether U ug/l 8260B 09/15/13 1 Chloroform U ug/l 8260B 09/15/13 1 Chloromethane U ug/l 8260B 09/15/13 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: 09/25/13 09:54 Printed: 09/25/13 09:54 L (CR6) - Diluted due to sample color interference. L (PH) - 8.7@17.6c Page 2 of 7

37 REPORT OF ANALYSIS David Jaros September 25, 2013 Terracon- Little Rock, AR I-30 Bryant, AR Date Received : September 12, 2013 Description : Clearwater Paper Corporation Sample ID : LEACHATE Collected By : Wes Williams Collection Date : 09/10/13 14: Lebanon Rd. Mt. Juliet, TN (615) Fax (615) Tax I.D Est ESC Sample # : L Site ID : Project # : LEACHATE Parameter Result MDL RDL Units Qualifier Method Date Dil. 2-Chlorotoluene U ug/l 8260B 09/15/ Chlorotoluene U ug/l 8260B 09/15/13 1 1,2-Dibromo-3-Chloropropane U ug/l 8260B 09/15/13 1 1,2-Dibromoethane U ug/l 8260B 09/15/13 1 Dibromomethane U ug/l 8260B 09/15/13 1 1,2-Dichlorobenzene U ug/l 8260B 09/15/13 1 1,3-Dichlorobenzene U ug/l 8260B 09/15/13 1 1,4-Dichlorobenzene U ug/l 8260B 09/15/13 1 Dichlorodifluoromethane U ug/l 8260B 09/15/13 1 1,1-Dichloroethane U ug/l 8260B 09/15/13 1 1,2-Dichloroethane U ug/l 8260B 09/15/13 1 1,1-Dichloroethene U ug/l 8260B 09/15/13 1 cis-1,2-dichloroethene U ug/l 8260B 09/15/13 1 trans-1,2-dichloroethene U ug/l 8260B 09/15/13 1 1,2-Dichloropropane U ug/l 8260B 09/15/13 1 1,1-Dichloropropene U ug/l 8260B 09/15/13 1 1,3-Dichloropropane U ug/l 8260B 09/15/13 1 cis-1,3-dichloropropene U ug/l 8260B 09/15/13 1 trans-1,3-dichloropropene U ug/l 8260B 09/15/13 1 2,2-Dichloropropane U ug/l 8260B 09/15/13 1 Di-isopropyl ether U ug/l 8260B 09/15/13 1 Ethylbenzene U ug/l 8260B 09/15/13 1 Hexachloro-1,3-butadiene U ug/l 8260B 09/15/13 1 Isopropylbenzene U ug/l 8260B 09/15/13 1 p-isopropyltoluene U ug/l 8260B 09/15/ Butanone (MEK) ug/l J 8260B 09/15/13 1 Methylene Chloride U ug/l 8260B 09/15/ Methyl-2-pentanone (MIBK) U ug/l 8260B 09/15/13 1 Methyl tert-butyl ether U ug/l 8260B 09/15/13 1 Naphthalene U ug/l 8260B 09/15/13 1 n-propylbenzene U ug/l 8260B 09/15/13 1 Styrene U ug/l 8260B 09/15/13 1 1,1,1,2-Tetrachloroethane U ug/l 8260B 09/15/13 1 1,1,2,2-Tetrachloroethane U ug/l 8260B 09/15/13 1 1,1,2-Trichlorotrifluoroethane U ug/l 8260B 09/15/13 1 Tetrachloroethene U ug/l 8260B 09/15/13 1 Toluene ug/l J 8260B 09/15/13 1 1,2,3-Trichlorobenzene U ug/l 8260B 09/15/13 1 1,2,4-Trichlorobenzene U ug/l 8260B 09/15/13 1 1,1,1-Trichloroethane U ug/l 8260B 09/15/13 1 1,1,2-Trichloroethane U ug/l 8260B 09/15/13 1 Trichloroethene U ug/l 8260B 09/15/13 1 Trichlorofluoromethane U ug/l 8260B 09/15/13 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: 09/25/13 09:54 Printed: 09/25/13 09:54 L (CR6) - Diluted due to sample color interference. L (PH) - 8.7@17.6c Page 3 of 7

38 REPORT OF ANALYSIS David Jaros September 25, 2013 Terracon- Little Rock, AR I-30 Bryant, AR Date Received : September 12, 2013 Description : Clearwater Paper Corporation Sample ID : LEACHATE Collected By : Wes Williams Collection Date : 09/10/13 14: Lebanon Rd. Mt. Juliet, TN (615) Fax (615) Tax I.D Est ESC Sample # : L Site ID : Project # : LEACHATE Parameter Result MDL RDL Units Qualifier Method Date Dil. 1,2,3-Trichloropropane U ug/l 8260B 09/15/13 1 1,2,4-Trimethylbenzene U ug/l 8260B 09/15/13 1 1,2,3-Trimethylbenzene U ug/l 8260B 09/15/13 1 1,3,5-Trimethylbenzene U ug/l 8260B 09/15/13 1 Vinyl chloride U ug/l 8260B 09/15/13 1 Xylenes, Total U ug/l 8260B 09/15/13 1 Surrogate Recovery Toluene-d % Rec. 8260B 09/15/13 1 Dibromofluoromethane 96.9 % Rec. 8260B 09/15/ Bromofluorobenzene 100. % Rec. 8260B 09/15/13 1 Pesticides Aldrin U ug/l O 8081 A 09/20/ Alpha BHC U ug/l O 8081 A 09/20/ Beta BHC U ug/l O 8081 A 09/20/ Delta BHC U ug/l O 8081 A 09/20/ Gamma BHC U ug/l O 8081 A 09/20/ Chlordane U ug/l O 8081 A 09/20/ ,4-DDD U ug/l O 8081 A 09/20/ ,4-DDE U ug/l O 8081 A 09/20/ ,4-DDT U ug/l O 8081 A 09/20/ Dieldrin U ug/l O 8081 A 09/20/ Endosulfan I U ug/l O 8081 A 09/20/ Endosulfan II U ug/l O 8081 A 09/20/ Endosulfan sulfate U ug/l O 8081 A 09/20/ Endrin U ug/l O 8081 A 09/20/ Endrin aldehyde U ug/l OJ A 09/20/ Endrin ketone U ug/l OJ A 09/20/ Hexachlorobenzene U ug/l O 8081 A 09/20/ Heptachlor U ug/l O 8081 A 09/20/ Heptachlor epoxide U ug/l O 8081 A 09/20/ Methoxychlor U ug/l O 8081 A 09/20/ Toxaphene U ug/l O 8081 A 09/20/ Pesticides Surrogates Decachlorobiphenyl 159. % Rec. J A 09/20/ Tetrachloro-m-xylene 171. % Rec. J A 09/20/ Herbicides 2,4-D U ug/l O /19/13 20 Dalapon U ug/l O /19/ ,4-DB U ug/l O /19/13 20 Dicamba U ug/l O /19/13 20 Dichloroprop U ug/l O /19/13 20 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: 09/25/13 09:54 Printed: 09/25/13 09:54 L (CR6) - Diluted due to sample color interference. L (PH) - 8.7@17.6c Page 4 of 7

39 REPORT OF ANALYSIS David Jaros September 25, 2013 Terracon- Little Rock, AR I-30 Bryant, AR Date Received : September 12, 2013 Description : Clearwater Paper Corporation Sample ID : LEACHATE Collected By : Wes Williams Collection Date : 09/10/13 14: Lebanon Rd. Mt. Juliet, TN (615) Fax (615) Tax I.D Est ESC Sample # : L Site ID : Project # : LEACHATE Parameter Result MDL RDL Units Qualifier Method Date Dil. Dinoseb U ug/l O /19/13 20 MCPA U ug/l O /19/13 20 MCPP U ug/l O /19/ ,4,5-T U ug/l O /19/ ,4,5-TP (Silvex) U ug/l O /19/13 20 Surrogate Recovery 2,4-Dichlorophenyl Acetic Acid 69.7 % Rec. J /19/13 20 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: 09/25/13 09:54 Printed: 09/25/13 09:54 L (CR6) - Diluted due to sample color interference. L (PH) - 8.7@17.6c Page 5 of 7

40 Attachment A List of Analytes with QC Qualifiers Sample Work Sample Run Number Group Type Analyte ID Qualifier L WG SAMP ph R T8 WG SAMP Selenium R J WG SAMP Mercury R JT2 WG SAMP 2,4-D R O WG SAMP Dalapon R O WG SAMP 2,4-DB R O WG SAMP Dicamba R O WG SAMP Dichloroprop R O WG SAMP Dinoseb R O WG SAMP MCPA R O WG SAMP MCPP R O WG SAMP 2,4,5-T R O WG SAMP 2,4,5-TP (Silvex) R O WG SAMP 2,4-Dichlorophenyl Acetic Acid R J7 WG SAMP Silver R J WG SAMP Acetone R J WG SAMP 2-Butanone (MEK) R J WG SAMP Toluene R J WG SAMP Aldrin R O WG SAMP Alpha BHC R O WG SAMP Beta BHC R O WG SAMP Delta BHC R O WG SAMP Gamma BHC R O WG SAMP Chlordane R O WG SAMP 4,4-DDD R O WG SAMP 4,4-DDE R O WG SAMP 4,4-DDT R O WG SAMP Dieldrin R O WG SAMP Endosulfan I R O WG SAMP Endosulfan II R O WG SAMP Endosulfan sulfate R O WG SAMP Endrin R O WG SAMP Endrin aldehyde R OJ4 WG SAMP Endrin ketone R OJ4 WG SAMP Hexachlorobenzene R O WG SAMP Heptachlor R O WG SAMP Heptachlor epoxide R O WG SAMP Methoxychlor R O WG SAMP Toxaphene R O WG SAMP Decachlorobiphenyl R J7 WG SAMP Tetrachloro-m-xylene R J7 Page 6 of 7

41 Attachment B Explanation of QC Qualifier Codes Qualifier Meaning J J4 J7 O T2 T8 (EPA) - Estimated value below the lowest calibration point. Confidence correlates with concentration. The associated batch QC was outside the established quality control range for accuracy. 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. (ESC) - Additional method/sample information: The laboratory analysis was from an unpreserved or improperly preserved sample. (ESC) - Additional method/sample information: Sample(s) received past/too close to holding time expiration. 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 7 of 7

42 Summary of Remarks For Samples Printed 09/25/13 at 09:54:36 TSR Signing Reports: 134 R5 - Desired TAT Sample: L Account: GENENLAR Received: 09/12/13 09:00 Due Date: 09/19/13 00:00 RPT Date: 09/25/13 09:54

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44

45 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 Thursday September 26, 2013 Report Number: L Samples Received: 09/12/13 Client Project: Description: Clearwater Paper Corporation 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 11

46 REPORT OF ANALYSIS David Jaros September 26, 2013 Terracon- Little Rock, AR I-30 Bryant, AR Date Received : September 12, 2013 Description : Clearwater Paper Corporation Sample ID : MW-1A Collected By : Wes Williams Collection Date : 09/10/13 12: Lebanon Rd. Mt. Juliet, TN (615) Fax (615) Tax I.D Est ESC Sample # : L Site ID : Project # : Parameter Result MDL RDL Units Qualifier Method Date Dil. Chloride ug/l /12/13 1 Fluoride ug/l /12/13 1 Nitrate U ug/l /12/13 1 Sulfate ug/l /12/13 2 COD ug/l J /17/13 1 Phosphorus,Total ug/l /20/13 1 Sulfide U ug/l 4500S2 09/17/13 1 TOC (Total Organic Carbon) ug/l 9060A 09/17/13 1 Dissolved Solids ug/l 2540 C- 09/15/13 1 Arsenic ug/l /13/13 1 Cadmium U ug/l /13/13 1 Copper ug/l J /13/13 1 Zinc ug/l J /13/13 1 Barium ug/l 6010B 09/25/13 1 Chromium U ug/l 6010B 09/25/13 1 Iron ug/l 6010B 09/25/13 1 Lead U ug/l 6010B 09/26/13 1 Manganese ug/l 6010B 09/25/13 1 Nickel U ug/l 6010B 09/25/13 1 Potassium ug/l 6010B 09/25/13 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: 09/26/13 13:51 Printed: 09/26/13 13:51 Page 2 of 11

47 REPORT OF ANALYSIS David Jaros September 26, 2013 Terracon- Little Rock, AR I-30 Bryant, AR Date Received : September 12, 2013 Description : Clearwater Paper Corporation Sample ID : MW-2A Collected By : Wes Williams Collection Date : 09/10/13 15: Lebanon Rd. Mt. Juliet, TN (615) Fax (615) Tax I.D Est ESC Sample # : L Site ID : Project # : Parameter Result MDL RDL Units Qualifier Method Date Dil. Chloride ug/l /12/13 1 Fluoride ug/l /12/13 1 Nitrate U ug/l /12/13 1 Sulfate ug/l /12/13 1 COD ug/l /19/13 1 Phosphorus,Total ug/l /20/13 1 Sulfide U ug/l 4500S2 09/17/13 1 TOC (Total Organic Carbon) ug/l 9060A 09/17/13 1 Dissolved Solids ug/l 2540 C- 09/15/13 1 Arsenic ug/l /15/13 1 Cadmium U ug/l /15/13 1 Copper U ug/l /15/13 1 Zinc U ug/l /15/13 1 Barium ug/l 6010B 09/25/13 1 Chromium U ug/l 6010B 09/25/13 1 Iron ug/l 6010B 09/25/13 1 Lead U ug/l 6010B 09/26/13 1 Manganese ug/l 6010B 09/25/13 1 Nickel U ug/l 6010B 09/25/13 1 Potassium ug/l 6010B 09/25/13 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: 09/26/13 13:51 Printed: 09/26/13 13:51 Page 3 of 11

48 REPORT OF ANALYSIS David Jaros September 26, 2013 Terracon- Little Rock, AR I-30 Bryant, AR Date Received : September 12, 2013 Description : Clearwater Paper Corporation Sample ID : MW-3AR Collected By : Wes Williams Collection Date : 09/10/13 16: Lebanon Rd. Mt. Juliet, TN (615) Fax (615) Tax I.D Est ESC Sample # : L Site ID : Project # : Parameter Result MDL RDL Units Qualifier Method Date Dil. Chloride ug/l /12/13 1 Fluoride ug/l /12/13 1 Nitrate U ug/l /12/13 1 Sulfate ug/l /12/13 1 COD ug/l J /19/13 1 Phosphorus,Total ug/l /20/13 1 Sulfide U ug/l 4500S2 09/17/13 1 TOC (Total Organic Carbon) ug/l 9060A 09/17/13 1 Dissolved Solids ug/l 2540 C- 09/15/13 1 Arsenic ug/l J /15/13 1 Cadmium U ug/l /15/13 1 Copper ug/l J /15/13 1 Zinc U ug/l /15/13 1 Barium ug/l 6010B 09/25/13 1 Chromium U ug/l 6010B 09/25/13 1 Iron ug/l 6010B 09/25/13 1 Lead U ug/l 6010B 09/26/13 1 Manganese ug/l 6010B 09/25/13 1 Nickel U ug/l 6010B 09/25/13 1 Potassium ug/l 6010B 09/25/13 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: 09/26/13 13:51 Printed: 09/26/13 13:51 Page 4 of 11

49 REPORT OF ANALYSIS David Jaros September 26, 2013 Terracon- Little Rock, AR I-30 Bryant, AR Date Received : September 12, 2013 Description : Clearwater Paper Corporation Sample ID : MW-4A Collected By : Wes Williams Collection Date : 09/10/13 12: Lebanon Rd. Mt. Juliet, TN (615) Fax (615) Tax I.D Est ESC Sample # : L Site ID : Project # : Parameter Result MDL RDL Units Qualifier Method Date Dil. Chloride ug/l /12/13 10 Fluoride ug/l /12/13 1 Nitrate U ug/l /12/13 1 Sulfate ug/l /12/13 10 COD ug/l /19/13 1 Phosphorus,Total ug/l /20/13 1 Sulfide U ug/l 4500S2 09/17/13 1 TOC (Total Organic Carbon) ug/l 9060A 09/17/13 1 Dissolved Solids ug/l 2540 C- 09/15/13 1 Arsenic ug/l /15/13 1 Cadmium U ug/l /15/13 1 Copper ug/l J /15/13 1 Zinc U ug/l /15/13 1 Barium ug/l 6010B 09/25/13 1 Chromium U ug/l 6010B 09/25/13 1 Iron ug/l 6010B 09/25/13 1 Lead U ug/l 6010B 09/26/13 1 Manganese ug/l 6010B 09/25/13 1 Nickel U ug/l 6010B 09/25/13 1 Potassium ug/l 6010B 09/25/13 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: 09/26/13 13:51 Printed: 09/26/13 13:51 Page 5 of 11

50 REPORT OF ANALYSIS David Jaros September 26, 2013 Terracon- Little Rock, AR I-30 Bryant, AR Date Received : September 12, 2013 Description : Clearwater Paper Corporation Sample ID : MW-6A Collected By : Wes Williams Collection Date : 09/10/13 16: Lebanon Rd. Mt. Juliet, TN (615) Fax (615) Tax I.D Est ESC Sample # : L Site ID : Project # : Parameter Result MDL RDL Units Qualifier Method Date Dil. Chloride ug/l /13/13 5 Fluoride ug/l /12/13 1 Nitrate U ug/l /12/13 1 Sulfate ug/l /13/13 5 COD ug/l /19/13 1 Phosphorus,Total ug/l /20/13 1 Sulfide U ug/l 4500S2 09/17/13 1 TOC (Total Organic Carbon) ug/l 9060A 09/17/13 1 Dissolved Solids ug/l 2540 C- 09/15/13 1 Arsenic ug/l /15/13 1 Cadmium U ug/l /15/13 1 Copper ug/l J /15/13 1 Zinc ug/l J /15/13 1 Barium ug/l 6010B 09/24/13 1 Chromium U ug/l 6010B 09/24/13 1 Iron ug/l 6010B 09/24/13 1 Lead ug/l J 6010B 09/24/13 1 Manganese ug/l 6010B 09/24/13 1 Nickel U ug/l 6010B 09/24/13 1 Potassium ug/l 6010B 09/24/13 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: 09/26/13 13:51 Printed: 09/26/13 13:51 Page 6 of 11

51 REPORT OF ANALYSIS David Jaros September 26, 2013 Terracon- Little Rock, AR I-30 Bryant, AR Date Received : September 12, 2013 Description : Clearwater Paper Corporation Sample ID : MW-7 Collected By : Wes Williams Collection Date : 09/10/13 14: Lebanon Rd. Mt. Juliet, TN (615) Fax (615) Tax I.D Est ESC Sample # : L Site ID : Project # : Parameter Result MDL RDL Units Qualifier Method Date Dil. Chloride ug/l /12/13 1 Fluoride ug/l /12/13 1 Nitrate U ug/l /12/13 1 Sulfate ug/l /13/13 2 COD ug/l /19/13 1 Phosphorus,Total ug/l /20/13 1 Sulfide U ug/l 4500S2 09/17/13 1 TOC (Total Organic Carbon) ug/l 9060A 09/17/13 1 Dissolved Solids ug/l 2540 C- 09/15/13 1 Arsenic ug/l /15/13 1 Cadmium U ug/l /15/13 1 Copper ug/l J /15/13 1 Zinc U ug/l /15/13 1 Barium ug/l 6010B 09/24/13 1 Chromium U ug/l 6010B 09/24/13 1 Iron ug/l 6010B 09/24/13 1 Lead U ug/l 6010B 09/24/13 1 Manganese ug/l 6010B 09/24/13 1 Nickel U ug/l 6010B 09/24/13 1 Potassium ug/l 6010B 09/24/13 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: 09/26/13 13:51 Printed: 09/26/13 13:51 Page 7 of 11

52 REPORT OF ANALYSIS David Jaros September 26, 2013 Terracon- Little Rock, AR I-30 Bryant, AR Date Received : September 12, 2013 Description : Clearwater Paper Corporation Sample ID : DUPLICATE Collected By : Wes Williams Collection Date : 09/10/13 12: Lebanon Rd. Mt. Juliet, TN (615) Fax (615) Tax I.D Est ESC Sample # : L Site ID : Project # : Parameter Result MDL RDL Units Qualifier Method Date Dil. Chloride ug/l /12/13 1 Fluoride ug/l /12/13 1 Nitrate U ug/l /12/13 1 Sulfate ug/l /12/13 2 COD ug/l J /19/13 1 Phosphorus,Total ug/l /20/13 1 Sulfide U ug/l 4500S2 09/17/13 1 TOC (Total Organic Carbon) ug/l 9060A 09/17/13 1 Dissolved Solids ug/l 2540 C- 09/15/13 1 Arsenic ug/l /15/13 1 Cadmium U ug/l /15/13 1 Copper ug/l J /15/13 1 Zinc U ug/l /15/13 1 Barium ug/l 6010B 09/24/13 1 Chromium U ug/l 6010B 09/24/13 1 Iron ug/l 6010B 09/24/13 1 Lead ug/l J 6010B 09/24/13 1 Manganese ug/l 6010B 09/24/13 1 Nickel U ug/l 6010B 09/24/13 1 Potassium ug/l 6010B 09/24/13 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: 09/26/13 13:51 Printed: 09/26/13 13:51 Page 8 of 11

53 REPORT OF ANALYSIS David Jaros September 26, 2013 Terracon- Little Rock, AR I-30 Bryant, AR Date Received : September 12, 2013 Description : Clearwater Paper Corporation Sample ID : FIELD BLANK Collected By : Wes Williams Collection Date : 09/10/13 12: Lebanon Rd. Mt. Juliet, TN (615) Fax (615) Tax I.D Est ESC Sample # : L Site ID : Project # : Parameter Result MDL RDL Units Qualifier Method Date Dil. Chloride U ug/l /12/13 1 Fluoride U ug/l /12/13 1 Nitrate U ug/l /12/13 1 Sulfate U ug/l /12/13 1 COD U ug/l /19/13 1 Phosphorus,Total U ug/l /20/13 1 Sulfide U ug/l 4500S2 09/17/13 1 TOC (Total Organic Carbon) ug/l J 9060A 09/17/13 1 Dissolved Solids U ug/l T C- 09/15/13 1 Arsenic U ug/l /15/13 1 Cadmium U ug/l /15/13 1 Copper U ug/l /15/13 1 Zinc U ug/l /15/13 1 Barium U ug/l 6010B 09/24/13 1 Chromium U ug/l 6010B 09/24/13 1 Iron U ug/l 6010B 09/24/13 1 Lead U ug/l 6010B 09/24/13 1 Manganese U ug/l 6010B 09/24/13 1 Nickel U ug/l 6010B 09/24/13 1 Potassium U ug/l 6010B 09/24/13 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: 09/26/13 13:51 Printed: 09/26/13 13:51 Page 9 of 11

54 Attachment A List of Analytes with QC Qualifiers Sample Work Sample Run Number Group Type Analyte ID Qualifier L WG SAMP Copper R J WG SAMP Zinc R J WG SAMP COD R J L WG SAMP Arsenic R J WG SAMP Copper R J WG SAMP COD R J6 L WG SAMP Copper R J L WG SAMP Copper R J WG SAMP Zinc R J WG SAMP Lead R J L WG SAMP Copper R J L WG SAMP Copper R J WG SAMP COD R J WG SAMP Lead R J L WG SAMP TOC (Total Organic Carbon) R J WG SAMP Dissolved Solids R T4 Page 10 of 11

55 Attachment B Explanation of QC Qualifier Codes Qualifier Meaning J J6 T4 (EPA) - Estimated value below the lowest calibration point. Confidence correlates with concentration. The sample matrix interfered with the ability to make any accurate determination; spike value is low (ESC) - Additional method/sample information: QNS - Quantity Not Sufficient 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 11 of 11

56 Summary of Remarks For Samples Printed 09/26/13 at 13:51:50 TSR Signing Reports: 134 R5 - Desired TAT Sample: L Account: GENENLAR Received: 09/12/13 09:00 Due Date: 09/19/13 00:00 RPT Date: 09/26/13 13:51 Sample: L Account: GENENLAR Received: 09/12/13 09:00 Due Date: 09/19/13 00:00 RPT Date: 09/26/13 13:51 Sample: L Account: GENENLAR Received: 09/12/13 09:00 Due Date: 09/19/13 00:00 RPT Date: 09/26/13 13:51 Sample: L Account: GENENLAR Received: 09/12/13 09:00 Due Date: 09/19/13 00:00 RPT Date: 09/26/13 13:51 Sample: L Account: GENENLAR Received: 09/12/13 09:00 Due Date: 09/19/13 00:00 RPT Date: 09/26/13 13:51 Sample: L Account: GENENLAR Received: 09/12/13 09:00 Due Date: 09/19/13 00:00 RPT Date: 09/26/13 13:51 Sample: L Account: GENENLAR Received: 09/12/13 09:00 Due Date: 09/19/13 00:00 RPT Date: 09/26/13 13:51 Sample: L Account: GENENLAR Received: 09/12/13 09:00 Due Date: 09/19/13 00:00 RPT Date: 09/26/13 13:51

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58 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 Monday September 30, 2013 Report Number: L Samples Received: 09/24/13 Client Project: Description: Clearwater Paper Corporation 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 4

59 REPORT OF ANALYSIS David Jaros September 30, 2013 Terracon- Little Rock, AR I-30 Bryant, AR Date Received : September 24, 2013 Description : Clearwater Paper Corporation Sample ID : LEACHATE Collected By : Wes Williams Collection Date : 09/23/13 11: Lebanon Rd. Mt. Juliet, TN (615) Fax (615) Tax I.D Est ESC Sample # : L Site ID : Project # : Parameter Result MDL RDL Units Qualifier Method Date Dil. Chromium,Hexavalent ug/l J 3500Cr 09/24/13 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: 09/30/13 01:05 Printed: 09/30/13 01:05 Page 2 of 4

60 Attachment A List of Analytes with QC Qualifiers Sample Work Sample Run Number Group Type Analyte ID Qualifier L WG SAMP Chromium,Hexavalent R J Page 3 of 4

61 Attachment B Explanation of QC Qualifier Codes Qualifier Meaning J (EPA) - Estimated value below the lowest calibration point. Confidence correlates with concentration. 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 4 of 4

62 Summary of Remarks For Samples Printed 09/30/13 at 01:05:28 TSR Signing Reports: 134 R5 - Desired TAT Sample: L Account: GENENLAR Received: 09/24/13 09:30 Due Date: 10/01/13 00:00 RPT Date: 09/30/13 01:05

63