Disposal of Coal Combustion Residuals from Electric Utilities Rule ANNUAL GROUNDWATER MONITORING AND CORRECTIVE ACTION REPORT PREFACE

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1 Disposal of Coal Combustion Residuals from Electric Utilities Rule ANNUAL GROUNDWATER Report Requirements PREFACE This report documents the status of the groundwater monitoring and corrective action program in place under the federal Coal Combustion Residuals (CCR) Rule. Containing data for the previous calendar year, it must be placed in the facility operating record by January 31 and posted publicly by March 2. It summarizes key actions completed, describes any challenges and how they were addressed, and projects key activities for the upcoming year. It must include a map or diagram depicting the CCR unit and all the wells in the monitoring network, identifying any that were decommissioned or installed in the previous year. In addition, it contains the monitoring data summary, a narrative discussing any transitions between detection monitoring and assessment monitoring and the reasons for those transitions. What the Report Is This report describes the first step in a phased, prescriptive process for monitoring groundwater near CCR storage facilities. It is a snap shot in time, showing how the data obtained during the report year compare to all the background data that have been obtained to date, and whether further monitoring for additional substances should be performed based on that comparison. What the Report Is Not The report does not make any determinations regarding potential environmental impact to or contamination of groundwater, and neither the raw data nor the initial statistical analysis should be independently or collectively interpreted in that way. Report Methodology Data comparison is done through a test to determine if monitoring results from wells adjacent to the CCR facility are statistically higher than background levels for that site. Therefore, as the data set increases over time, so does the confidence that any one result represents a statistically significant increase (SSI) over the background data. Groundwater moves slowly and both natural and man-made sources can impact groundwater. Therefore, the federal rule uses a phased approach with data verification steps in between. In this initial annual report, if a data result yields an SSI, the groundwater monitoring effort transitions from the detection program (measuring substances that move most rapidly in groundwater to identify a potential impact) to the assessment program (measuring substances that are of more concern including several that have regulatory standards).

2 217 ANNUAL CCR GROUNDWATER MONITORING AND CORRECTIVE ACTION REPORT COAL COMBUSTION BYPRODUCT LANDFILL Ft. Martin Power Station Monongalia County, West Virginia Prepared for: FirstEnergy 8 Cabin Hill Drive Greensburg, PA 1561 Prepared by: Tetra Tech, Inc. 4 Penn Center Boulevard, Suite 2 Pittsburgh, PA Phone: (412) Fax: (412) Tetra Tech Project No. 212C-SW-68 January 218

3 217 ANNUAL CCR GROUNDWATER MONITORING AND CORRECTIVE ACTION REPORT COAL COMBUSTION BYPRODUCT LANDFILL FT. MARTIN POWER STATION MONONGALIA COUNTY, WEST VIRGINIA Prepared for: FirstEnergy 8 Cabin Hill Drive Greensburg, PA 1561 Prepared by: Tetra Tech, Inc. 4 Penn Center Boulevard, Suite 2 Pittsburgh, PA Phone: (412) Fax: (412) Tetra Tech Project No. 212C-SW-68 January 218

4 January ANNUAL CCR GROUNDWATER TABLE OF CONTENTS 1. INTRODUCTION Background and Site Characteristics Regulatory Basis Overview of Report Contents GENERAL INFORMATION Status Of The Groundwater Monitoring And Corrective Action Program Establishing a CCR Groundwater Monitoring Well System Development of a Groundwater Monitoring Plan Completion of Background Groundwater Sampling Selection of Statistical Methods Initial Detection Monitoring Sampling Event Problems Encountered/Resolved Transition Between Monitoring Programs (If Any) Key Activities Planned For The Upcoming Year DETECTION MONITORING INFORMATION Groundwater Analytical Results Summary TABLES FIGURES 212C-SW-68 iii

5 January ANNUAL CCR GROUNDWATER TABLES 2-1 CCR Rule Groundwater Monitoring System Well Summary 3-1 CCR Rule Groundwater Monitoring Analytical Results Summary FIGURES 2-1 CCR Rule Groundwater Monitoring System 212C-SW-68 iv

6 January ANNUAL CCR GROUNDWATER 1. INTRODUCTION This 217 Annual Coal Combustion Residuals (CCR) Groundwater Monitoring and Corrective Action Report was prepared by Tetra Tech, Inc. (Tetra Tech) on behalf of FirstEnergy (FE), for the Coal Combustion Byproduct Landfill (CCBL or CCR unit ) at the Ft. Martin Power Station (hereinafter referred to as the Station ). The Station is located in Monongalia County, West Virginia. The report was developed to comply with requirements of 4 CFR 257.9(e). 1.1 BACKGROUND AND SITE CHARACTERISTICS CCRs produced at the Station are placed in the facility s captive CCBL, which is located approximately.75 miles northwest of the Station. The landfill is an existing CCR unit that is regulated under West Virginia Department of Environmental Protection (WVDEP) Solid Waste/National Pollutant Discharge Elimination System (NPDES) Water Pollution Control Permit No. WV A WVDEP groundwater monitoring program for the landfill has been in effect since The permitted landfill facility consists of two separate, active disposal areas, a haul road that also doubles as the primary station access road, a gypsum stack out/loading pad, five combined leachate/sedimentation ponds, one equalization/settling pond, and a variety of stormwater management controls (channels, culverts, slope drains, etc.). The two active disposal areas are separated by the haul road and consist of the Original landfill (approximately 7 acres in size and located south of the Haul Road) and the Expansion Area landfill (approximately 77 acres in size and located north of the haul road). The Original landfill has historically been the primary disposal area, is unlined, but was built with a bottom ash drainage blanket placed on original ground that serves as a leachate collection layer. The Expansion Area landfill was constructed in 29, is underlain with a composite liner system (geomembrane and geosynthetic clay liner), and has both leachate collection and leak detection layers. The Expansion Area landfill is permitted to be developed in two construction phases, referred to as Phase 1 and Phase 2. At this time, the Phase 1 area (approximately 3 acres) has been constructed and represents the active portion of the Expansion Area landfill. Groundwater in the CCBL area occurs primarily within fractured bedrock. The Connellsville sandstone has been identified as the uppermost aquifer for CCR Rule groundwater monitoring over most of the CCBL area, with the underlying Clarksburg units considered the uppermost aquifer in a few limited areas where monitoring is required but the Connellsville sandstone has eroded away. Due to the site s location on a topographic high and its geologic setting, there is no shallow groundwater flow to the site from offsite areas. Historic and recent groundwater level 212C-SW

7 January ANNUAL CCR GROUNDWATER data indicate groundwater flow at the CCBL to be primarily radial, away from the disposal areas and to the local springs/seeps in the nearby stream valleys, and that both flow systems (Connellsville and Clarksburg) exhibit very little seasonal and temporal fluctuations. A representative set of water level data from the current reporting period (217) were used for contouring groundwater flow patterns at the site as shown on Figure 2-1. A more detailed discussion of the site s geologic and hydrogeologic characteristics is provided in Section 2. of this report. 1.2 REGULATORY BASIS As required by 257.9(e), of the CCR Rule, Owners or Operators of existing CCR landfills and surface impoundments must prepare an Annual Groundwater Monitoring and Corrective Action Report no later than January 31, 218 and annually thereafter. According to the subject section, For the preceding calendar year, the annual report must document the status of the groundwater monitoring and corrective action program for the CCR unit, summarize key actions completed, describe any problems encountered, discuss actions to resolve the problems, and project key activities for the upcoming year. This report has been developed to meet the general requirements above and the specific requirements of 257.9(e)(1) through (5), which include: (1) A map, aerial image, or diagram showing the CCR unit and all background (or upgradient) and downgradient monitoring wells, to include the well identification numbers, that are part of the groundwater monitoring program for the CCR unit (see Figure 2-1); (2) Identification of any monitoring wells that were installed or decommissioned during the preceding year, along with a narrative description of why those actions were taken (see Section 2.1.1); (3) In addition to all the monitoring data obtained under through , a summary including the number of groundwater samples that were collected for analysis for each background and downgradient well, the dates the samples were collected, and whether the sample was required by the detection monitoring or assessment monitoring programs (see Sections and and Table 3-1); 212C-SW

8 January ANNUAL CCR GROUNDWATER (4) A narrative discussion of any transition between monitoring programs (e.g., the date and circumstances for transitioning from detection monitoring to assessment monitoring in addition to identifying the constituent(s) detected at a statistically significant increase over background levels) (see Section 2.3); and (5) Other information required to be included in the annual report as specified in through In addition, the Owner and Operator must place the report in the facility's operating record as required by (h)(1), provide notification of the report s availability to the appropriate State Director within 3 days of placement in operating record as required by (h)(1), and place the report on the facility s publically accessible website, also within 3 days of placing the report in the operating record. 1.3 OVERVIEW OF REPORT CONTENTS Section 1. of this report provided an overview of the CCR unit characteristics, regulatory basis, and a summary of the requirements for CCR Annual Groundwater Monitoring and Corrective Action Reports. Section 2. summarizes the status of key actions pertaining to CCR groundwater monitoring completed during 217 for the CCBL and plans for the upcoming year. Section 3. presents Detection Monitoring results from groundwater sampling events completed in C-SW

9 January ANNUAL CCR GROUNDWATER 2. GENERAL INFORMATION This section provides an overview of the status of the CCR groundwater monitoring program through 217 and key activities planned for STATUS OF THE GROUNDWATER MONITORING AND CORRECTIVE ACTION PROGRAM During calendar years 216 and 217, the following key actions were completed with regard to the CCR groundwater monitoring program for the CCBL Establishing a CCR Groundwater Monitoring Well System Tetra Tech was contracted by FirstEnergy to review existing groundwater monitoring system information and site hydrogeologic data for the CCBL to evaluate the suitability of the existing system, determine whether additional monitoring wells were needed, and to install and develop any new wells to establish a system that meets the applicable requirements and performance standards for groundwater monitoring under 4 CFR Upon completing this review, eleven additional groundwater monitoring wells were installed in June of 216 to fill data gaps and to develop a network in compliance with CCR Rule requirements. The CCR monitoring well network consists of three background wells (MW-, - 127, and -128), eight downgradient wells for the Original landfill (MW-16, -17, -129, -13, -131, -132, -133, and -134), eight downgradient wells for the Expansion Area landfill (MW-121, -123, - 125, -135, -136, -137, -138, and -139), and two downgradient wells positioned between the two landfills (MW-19 and -2), as summarized in attached Table 2-1 and shown on attached Figure 2-1. A CCR Groundwater Monitoring System Evaluation Report (Tetra Tech, Inc., October, 217), which discusses the basis for development of the monitoring well network and includes detailed information on the site geology, hydrogeology, and well completion records, was placed in the facility s Operating Record. As required by (f), the CCR groundwater monitoring well network was certified by a Professional Engineer to be in compliance with the applicable requirements of The subject certification was placed in both the facility s Operating Record and on the publically accessible website ( on October 17, C-SW

10 January ANNUAL CCR GROUNDWATER Development of a Groundwater Monitoring Plan On behalf of FE, Tetra Tech prepared a Groundwater Monitoring Plan to comply with applicable requirements of the CCR Rule. The document provides the sampling and analytical methodologies and procedures for collecting and reporting representative groundwater quality data from CCR monitoring wells at the CCBL. As required by (a), the document provides procedures and techniques for the following: Sample collection; Sample preservation and shipment; Analytical procedures; Chain-of-custody control; and Quality assurance (QA) and quality control (QC). In addition, the document includes the statistical plan describing the process for evaluating groundwater monitoring data developed from the CCR sampling and analysis program [ (f)] Completion of Background Groundwater Sampling To fulfill the applicable requirements of (b), eight independent rounds of background groundwater samples for analyzing all Appendix III and IV parameters from each of the CCR monitoring wells were collected prior to October 17, 217. The sampling events were conducted on the following dates: Sampling Event Dates 1 8/29 to 9/14/16 2 /29 to 12/19/16 3 2/1 to 2/23/17 4 3/29 to 4/4/17 5 4/27 to 5/8/17 6 6/5 to 6/12/17 7 7/5 to 7/12/17 8 8/3 to 8/15/ Selection of Statistical Methods Based on the attributes of the data set from the eight rounds of background sampling, statistical methods were selected among the available methods referenced in (f) which met the performance standards referenced in (g). Data from the first eight rounds of groundwater 212C-SW

11 January ANNUAL CCR GROUNDWATER analytical results collected at the background and downgradient CCR network wells at the site were evaluated in terms of percent non-detects and data distributions to select the appropriate statistical method for each parameter to identify any Statistically Significant Increases (SSIs) over background concentrations [ (h)]. As required by (f)(6), the statistical method selection was certified by a Professional Engineer as currently appropriate for evaluating the groundwater monitoring data for the CCBL at the Ft. Martin Power Station and as meeting the applicable requirements of (f). The subject certification was placed in both the facility s Operating Record and on the publically accessible website on October 17, Initial Detection Monitoring Sampling Event In accordance with , FirstEnergy collected the first round of Detection Monitoring samples from the background and downgradient CCR groundwater monitoring wells from September 13 to September 25, 217 as summarized in the table below. The samples were analyzed for Appendix III parameters, with the laboratory analyses completed by October 5, 217. The laboratory results are discussed in Section 3. of this report. Monitoring Well Location Date Sampled Purpose MW- Background 9/14/17 Detection Monitoring MW-127 9/14/17 Detection Monitoring MW-128 9/14/17 Detection Monitoring MW-16 Downgradient 9/21/17 Detection Monitoring MW-17 Original Landfill 9/21/17 Detection Monitoring MW-129 9/25/17 Detection Monitoring MW-13 9/25/17 Detection Monitoring MW-131 9/21/17 Detection Monitoring MW-132 9/13/17 Detection Monitoring MW-133 9/13/17 Detection Monitoring MW-134 9/21/17 Detection Monitoring MW-121 Downgradient 9/19/17 Detection Monitoring MW-123 Expansion Area Landfill 9/13/17 Detection Monitoring MW-125 9/13/17 Detection Monitoring MW-135 9/19/17 Detection Monitoring MW-136 9/13/17 Detection Monitoring MW-137 9/13/17 Detection Monitoring MW-138 9/18/17 Detection Monitoring MW-139 9/18/17 Detection Monitoring 212C-SW

12 January ANNUAL CCR GROUNDWATER Monitoring Well Location Date Sampled Purpose MW-19 Downgradient 9/19/17 Detection Monitoring MW-2 Both Landfills 9/18/17 Detection Monitoring 2.2 PROBLEMS ENCOUNTERED/RESOLVED There were no significant problems (e.g., insufficient groundwater yields for sampling, quality control issues, etc.) encountered during 217 with regard to the CCR groundwater monitoring program. 2.3 TRANSITION BETWEEN MONITORING PROGRAMS (IF ANY) During 216 and 217, the eight rounds of background sampling for all Appendix III and IV parameters were conducted followed by initiation of Detection Monitoring with collection of the first Detection Monitoring samples in September 217. There was no transition between monitoring programs (e.g., Detection to Assessment Monitoring) during KEY ACTIVITIES PLANNED FOR THE UPCOMING YEAR The following are the key CCR groundwater compliance activities planned for 218: Complete the statistical evaluation of the initial round of Detection Monitoring data to determine if there are any Appendix III parameter concentrations in downgradient wells exhibiting SSIs above background. If there are no SSIs, then continue with Detection Monitoring by conducting two semiannual rounds of sampling and analysis for Appendix III constituents [per (c)]. If any SSIs are identified, then potentially conduct an Alternate Source Determination (ASD) [per (e)(2)] to determine if a source other than the CCR unit may be causing the SSIs. If any SSI s are identified and an ASD indicates that an alternate source is not responsible for all the SSI s identified, then initiate Assessment Monitoring for Appendix IV constituents [per (e)(1)]. 212C-SW

13 January ANNUAL CCR GROUNDWATER 3. DETECTION MONITORING INFORMATION 3.1 GROUNDWATER ANALYTICAL RESULTS SUMMARY As referenced above, the CCR groundwater sampling and analysis program implemented through the end of 217 consists of the eight background sampling rounds conducted between August 216 and August 217 for all Appendix III and IV parameters, and the initial Detection Monitoring round of sampling conducted in September 217 for all Appendix III parameters. Table 3-1 presents the analytical results for these events. As previously noted, statistical evaluation of the Appendix III Detection Monitoring data in Table 3-1 remains in-progress as of the end of the 217 reporting period (lab results were received in the fourth quarter of 217 and a 9 day period is allowed by the CCR Rule for statistical evaluation which falls in the first quarter of 218). If any Appendix III SSIs are identified, ASD or Assessment Monitoring activities will be undertaken as appropriate, and associated recordkeeping, notification, and reporting will be performed in accordance with the applicable requirements of 4 CFR , 95, 15, 16, and 1 212C-SW

14 January ANNUAL CCR GROUNDWATER TABLES

15 TABLE 2-1 CCR RULE GROUNDWATER MONITORING SYSTEM WELL SUMMARY FT. MARTIN CCB LANDFILL 217 ANNUAL GROUNDWATER Well Background Year Installed Formation Monitored Ground Surface Elevation (ft MSL) Total Well Depth (ft bgs) Monitored Interval (ft bgs) Monitored Interval (ft MSL) Casing ID and Material MW Connellsville SS " - Sch. 4 PVC MW Connellsville SS " - Sch. 4 PVC MW Clarksburg " - Sch. 4 PVC Original Landfill - Downgradient MW Connellsville SS " - Sch. 4 PVC MW Connellsville SS " - Sch. 4 PVC MW Clarksburg " - Sch. 4 PVC MW Clarksburg " - Sch. 4 PVC MW Connellsville SS " - Sch. 4 PVC MW Connellsville SS " - Sch. 4 PVC MW Connellsville SS " - Sch. 4 PVC MW Connellsville SS " - Sch. 4 PVC Expansion Area Landfill - Downgradient MW Connellsville SS " - Sch. 4 PVC MW Connellsville SS " - Sch. 4 PVC MW Connellsville SS " - Sch. 4 PVC MW Connellsville SS " - Sch. 4 PVC MW Connellsville SS " - Sch. 4 PVC MW Connellsville SS " - Sch. 4 PVC MW Connellsville SS " - Sch. 4 PVC MW Connellsville SS " - Sch. 4 PVC Both Landfills - Downgradient MW Connellsville SS " - Sch. 4 PVC MW-2 22 Connellsville SS " - Sch. 4 PVC Notes: SS = sandstone MSL = mean sea level bgs = below ground surface ID = inside diameter PVC = polyvinyl chloride

16 TABLE 3-1 CCR RULE GROUNDWATER MONITORING ANALYTICAL RESULTS SUMMARY FT. MARTIN CCB LANDFILL ANNUAL GROUNDWATER SAMPLING EVENT NO. 2 WELL ID3 SAMPLE DATE BORON METALS MG/L APPENDIX III (all Chemical Constituents sampled as TOTAL RECOVERABLE) 1 APPENDIX IV (all Chemical Constituents sampled as TOTAL RECOVERABLE) 1 CALCIUM CHLORIDE FLUORIDE PH SULFATE TDS ANTIMONY ARSENIC BARIUM BERYLLIUM CADMIUM CHROMIUM COBALT LEAD LITHIUM MERCURY MOLYBDENUM SELENIUM METALS MISC MISC MISC MISC MISC METALS METALS METALS METALS METALS METALS METALS MG/L MG/L MG/L S.U. MG/L MG/L MG/L MG/L MG/L MG/L MG/L MG/L MG/L MG/L MG/L MG/L MG/L MG/L MG/L 1 MW- 9/7/ J J U.34 J U.175 U.3 U.475 U.52 U J.66 J. U.175 U.132 U.679 U 2 MW- /3/ J J U.15 U U.175 U.3 U.475 U.52 U.927 J.6 J.285 U. U.175 U.558 U.549 U 3 MW- 2/1/ J J U.17 J U.175 U.3 U.475 U.52 U.84 J.12 U.285 U. U.175 U.34 U.636 U 4 MW- 4/4/ J J U.15 U U.175 U.3 U.475 U.52 U.844 J.4 U.285 U. U.175 U.125 U.287 U 5 MW- 5/4/ J J U.15 U U.17 U.3 U.47 U.52 U.864 J.4 U.28 U. U.17 U U 6 MW- 6/12/ J J J.15 U U.9 U.3 U.47 U.52 U.865 J.4 U.28 U.5 U.17 U.566 U.225 U 7 MW- 7// J U U.15 U U.17 U.45 U.47 U.52 U.817 J.4 U.28 U. U.17 U U 8 MW- 8/14/ J J U.15 U U.17 U.45 U.47 U.52 U.87 J.5 J.28 U. U.17 U U.166 U 9 (DM-1) MW- (D) 9/14/ J J (DM-1) MW- 9/14/ J J MW-16 9/8/ J U.26 J U.175 U.3 U.475 U.52 U.68 J.7 J.66. U.175 U U 2 MW-16 12/6/ J U.25 J U.175 U.3 U.475 U.52 U.651 J.4 U U.175 U.592 U MW-16 2/7/ J U.15 J U.175 U.3 U.475 U.52 U.594 J.4 U.382 J. U.175 U U 4 MW-16 4/4/ J U.1 U UJ.175 U.3 UJ.475 U.52 U.613 J.4 U.392 J. U.175 U U 5 MW-16 (D) 5/2/ J U.15 U U.17 U.3 U.47 U.52 U.638 J.4 U.43 J. U.17 U U 5 MW-16 5/2/ J J J.15 U J.47 J.3 U.55 J.52 U.628 J.4 U.44 J. U.39 J U 6 MW-16 6/9/ J J U.21 J U.18 J.3 U.47 U.52 U.613 J.4 U.475 J.5 U.17 U U 7 MW-16 7/12/ J U.15 U U.17 U.45 U.47 U.52 U.545 J.4 U.262 J. U.17 U U 8 MW-16 8/1/ J U.18 J U.17 U.45 U.63 J.52 U.62 J.5 J.28 J. U.17 U (DM-1) MW-16 9/21/ J MW-17 9/12/ J J.15 U U.175 U.3 U.475 U.52 U.1352 J.6 J.774. U.175 U.123 U.592 U 2 MW-17 12/7/ J U.82 J U.175 U.3 U.475 U.52 U.681 J.4 J.251 J. U.175 U U 3 MW-17 2/22/ U.15 U.331 J-.22 U.175 U.3 U.475 U.52 U.1469 J.4 U. J. U.175 U.157 U.491 U 4 MW-17 4/3/ U.15 U U.175 U.3 U.475 U.52 U.143 J.4 U.89 J. U.175 U U 5 MW-17 5/3/ U.15 U U.17 U.292 J.47 U.52 U.1557 J.4 U.83 J. U.17 U.917 U.956 U 6 MW-17 6/5/ J J U.58 J U.17 U.3 U.47 U.52 U.638 J.4 J.34 J. U.17 U.64 U.765 U 7 MW-17 7/12/ U.15 U U.17 U.45 U.47 U.52 U.131 J.4 U.42 J. U.17 U U 8 MW-17 8/14/ U.15 U U.17 U.57 J.47 U.52 U.15 J.4 J.29 J. U.17 U.658 U.334 U 9 (DM-1) MW-17 9/21/ MW-19 9/14/ J U.4 J U.175 U.3 U.67 J.52 U.162 J.5 J.4 J. U.175 U U 2 MW-19 12/19/ J U.29 J U.175 U.3 U.98 J.52 U.159 J.4 U.99 J. U.175 U.613 U 1.74 U 3 MW-19 2/23/ J U.18 J U.175 U.3 U.67 J.52 U.157 J.4 U.77 J. U.175 U U 4 MW-19 4/3/ J U.39 J U.175 U.3 U.475 U.52 U.135 J.6 J.8 J. U.175 U U 5 MW-19 5/3/217.2 J J U.15 U U.17 U.3 U.47 U.52 U.157 J.4 U.63 J. U.17 U MW-19 6/12/ J U.15 U U.9 U.3 U.47 U.52 U.1361 J.4 U.73 J.5 U.17 U U 7 MW-19 7// J U U.27 J U.17 U.45 U.47 U.52 U.1588 J.4 U.99 J. U.17 U MW-19 8/9/217.3 J U.33 J U.17 U.45 U.47 U.52 U.1495 J.4 U.92 J. U.17 U U 9 (DM-1) MW-19 9/19/217.1 J J MW-2 9/6/216.5 J J-.56 J J.33 J U.175 U.66 J.475 U.52 U.823 J.6 J.56 J. U.175 U U 2 MW-2 /29/ J J U.29 J U.175 U.3 U.475 U.52 U.897 J.4 U.285 U. U.175 U.578 U.586 U 3 MW-2 2/21/ J J U.19 J.1554 J-.22 U.175 U.3 U.475 U.52 U.845 J.4 U.285 U.2 J.175 U U 4 MW-2 3/3/ J J U.1 U U.9 U.3 U.475 U.52 U.697 J.4 U.285 U. U.175 U.1 U MW-2 5/3/ J J U.15 U U.17 U.3 U.47 U.52 U.788 J.4 U.28 U. U.17 U U 6 MW-2 6/12/ J J U.22 J U.9 U.3 U.47 U.52 U.744 J.4 U.28 U. U.17 U MW-2 7/6/ J J U.15 U U.17 U.45 U.95 U.52 U.1 U.4 J.28 U. U.17 U MW-2 8/9/ J J J U.27 J U.17 U.45 U.47 U.52 U.776 J.4 U.28 U. U.17 U.477 U.319 U 9 (DM-1) MW-2 9/18/ J J MW-121 9/6/ J J U.32 J U.175 U.175 J.57 J.52 U.789 J.7 J U.175 U U 2 MW /12/ U J U.15 U U.175 U.3 U.71 J.52 U.833 J.4 U.632. U.175 U.535 U.718 U 3 MW-121 2/13/ J J U.1 U U.175 U.3 U.65 J.52 U.835 J.4 U.47 J. U.175 U U 4 MW-121 (D) 3/3/ J U.15 U U.9 U.3 U.59 J.52 U.77 J.4 U.467 J. U.175 U U 4 MW-121 3/3/ J U.15 U U.9 U.3 U.62 J.52 U.727 J.4 U.49 J. U.175 U U 5 MW-121 5/2/217. U J U.15 U U.17 U.3 U.47 U.52 U.828 J.4 U.463 J. U.17 U U 6 MW-121 6/6/ J J U.15 U U.17 U.3 U.47 U.52 U.777 J.4 U.376 J.5 U.17 U U 7 MW-121 7/1/ J J U.25 J U.17 U.45 U.47 U.52 U.795 J.4 U.292 J. U.17 U U 8 MW-121 8/9/ J J U.15 U U.17 U.45 U.47 U.52 U.793 J.4 U.236 J. U.17 U U 9 (DM-1) MW-121 9/19/ J J-.81 J MW-123 9/1/ J J J.54 J U.175 U.54 J.177 J.15 J.5 U.4 U.137. U.175 U MW /14/ U J U.33 J U.175 U.3 U.475 U.52 U.5 U.4 U U.175 U 1.6 J 1 3 MW-123 2/6/ J J U.47 J U.175 U.3 U.58 J.52 U.5 U.12 U.477 J. U.175 U MW-123 3/29/ J J U.1 U U.9 U.3 U.475 U.52 U.5 U.4 U.648. U.175 U U 5 MW-123 5/1/217. U J U.19 J U.9 U.3 U.47 U.52 U.5 U.4 U.58. U.17 U MW-123 6/8/ J J U.29 J U.29 J.3 U.73 J.52 U.5 U.4 U.419 J.5 U.17 U MW-123 7/5/ J J U.41 J U.17 U.45 U.87 J.52 U.5 U.4 U.319 J. U.17 U MW-123 8/8/ J J J U.61 J U.17 U.45 U.1 J.52 U.5 U.4 U.238 J. U.17 U 1 U.184 U 9 (DM-1) MW-123 9/13/217. U J MW-125 8/3/ J U.63 J U.175 U.76 J.128 J.52 U.82 J.4 U U.175 U MW /13/216.2 J J U.54 J U.175 U.6 U.7 J.52 U.5 U.4 J.73 J. U.175 U.546 U.67 U 3 MW-125 2/8/ J U.1 U U.175 U.3 U.475 U.52 U.1261 J.4 U.637. U.175 U.225 U.499 U 4 MW-125 3/29/ J U.1 U U.9 U.3 U.475 U.52 U.67 J.4 U.53. U.175 U U 5 MW-125 5/1/ J U.29 J U.9 U.3 U.47 U.52 U.42 J.4 U.418 J. U.17 U U 6 MW-125 (D) 6/7/ J U.15 U U.17 U.3 U.47 U.52 U.121 J.4 U.276 J.5 U.17 U U 6 MW-125 6/7/ J U.15 U U.17 U.3 U.47 U.52 U.27 J.4 U.247 J.5 U.17 U METALS THALLIUM RADIUM-226 PCI/L RADIUM-228 METALS METALS METALS METALS METALS RADIOCHEM RADIOCHEM PCI/L Sheet 1 of 3

17 TABLE 3-1 CCR RULE GROUNDWATER MONITORING ANALYTICAL RESULTS SUMMARY FT. MARTIN CCB LANDFILL ANNUAL GROUNDWATER SAMPLING EVENT NO. 2 WELL ID3 SAMPLE DATE BORON METALS MG/L APPENDIX III (all Chemical Constituents sampled as TOTAL RECOVERABLE) 1 APPENDIX IV (all Chemical Constituents sampled as TOTAL RECOVERABLE) 1 CALCIUM CHLORIDE FLUORIDE PH SULFATE TDS ANTIMONY ARSENIC BARIUM BERYLLIUM CADMIUM CHROMIUM COBALT LEAD LITHIUM MERCURY MOLYBDENUM SELENIUM METALS MISC MISC MISC MISC MISC METALS METALS METALS METALS METALS METALS METALS MG/L MG/L MG/L S.U. MG/L MG/L MG/L MG/L MG/L MG/L MG/L MG/L MG/L MG/L MG/L MG/L MG/L MG/L MG/L METALS THALLIUM RADIUM-226 PCI/L RADIUM-228 METALS METALS METALS METALS METALS RADIOCHEM RADIOCHEM 7 MW-125 7/1/217.5 J U.15 U U.17 U.45 U.47 U.52 U.136 J.4 U.186 J. U.17 U U 8 MW-125 8/8/ J U.15 U U.17 U.45 U.47 U.52 U.1214 J.4 U.167 J. U.17 U 1 U -.29 U 9 (DM-1) MW-125 9/13/ J MW-127 9/7/ J J J.29 J U.175 U.215 J.16 J.52 U J J.175 U U 2 MW /19/ U J U.44 J U.175 U.3 U.475 U.52 U U.166 J. U.175 U U 3 MW-127 2/1/ J U.15 J U.175 U.3 U.475 U.52 U U.161 J. U.175 U U 4 MW-127 4/4/ J J U.1 U U.175 U.3 U.475 U.52 U U.2 J. U.175 U MW-127 5/4/217. U J U.23 J U.17 U.3 U.47 U.52 U U.28 U. U.17 U MW-127 6/6/217. U J U.15 U U.17 U.98 J.47 U.52 U U.149 J. U.17 U U 7 MW-127 7// J U U.15 U U.17 U.68 J.47 U.52 U U.13 J. U.17 U MW-127 8/15/ J J U.15 U U.17 U.296 J.47 U.52 U U.75 J. U.17 U.486 J.292 UJ 9 (DM-1) MW-127 9/14/ J MW-128 9/8/ J U U.175 U.3 U.475 U.52 U.1235 J.7 J.833. U.175 U MW-128 /3/ J U U.175 U.3 U.475 U.52 U.89 J.4 U.425 J. U.175 U.549 U MW-128 2/7/ J U.88 J U.175 U.3 U.475 U.52 U.975 J.4 U.436 J. U.175 U.217 U.555 U 4 MW-128 4/4/ J U.1 U U.175 U.3 U.475 U.52 U.199 J.4 U.437 J. U.175 U.126 U.461 U 5 MW-128 5/4/ J U.86 J U.17 U.7 J.47 U.52 U.161 J.4 U.41 J. U.17 U MW-128 6/12/ J J.57 J U.9 U.3 U.47 U.52 U.865 J.4 U.31 J. U.17 U.948 U.1 U 7 MW-128 7// J U.51 J U.17 U.45 U.47 U.52 U.122 J.4 U.234 J. U.17 U U 8 MW-128 8/14/ J U.61 J U.17 U.45 U.47 U.52 U.78 J.4 J.129 J. U.17 U 1 U.52 9 (DM-1) MW-128 9/14/ J MW-129 9/14/ J U.38 J U.175 U.3 U.475 U.52 U.17 J.5 J.285 U. U.175 U.138 U.52 U 2 MW-129 (D) 12/1/ J U.55 J U.175 U.3 U.475 U.52 U.78 J.2 U.285 U. U.175 U.6 U MW /1/ J U.56 J U.175 U.6 U.95 U.52 U.1789 J.4 U.285 U. U.175 U.563 U.5 3 MW-129 2/22/ J U.35 J.228 J-.22 U.175 U.3 U.53 J.52 U.1479 J.4 U.285 U.121 J.175 U.191 U.53 U 4 MW-129 4/3/ J J U.1 U UJ.175 U.3 UJ.48 J.52 U.14 J.5 J.285 U. U.175 U U 5 MW-129 5/8/ J U.38 J U.17 U.3 U.47 U.52 U.1482 J.4 U.28 U. U.17 U.5 U.437 U 6 MW-129 6/12/ J U.28 J U.17 U.3 U.47 U.79 J.1369 J.4 U.28 U. U.17 U.47 U.98 U 7 MW-129 7/12/ J U.44 J U.17 U.45 U.47 U.52 U.1332 J.4 U.28 U. U.17 U MW-129 8/15/ J U.35 J U.17 U.45 U.47 U.52 U.142 J.4 U.28 U. U.17 U (DM-1) MW-129 9/25/ J MW-13 9/14/ J U.63 J U.175 U.3 U.475 U.52 U.515 J.5 J.87 J. U.175 U U 2 MW-13 12/1/ J U.87 J U.175 U.6 U.95 U.52 U.154 J.4 U.51 J. U.175 U.612 U.599 U 3 MW-13 2/23/ J U.59 J U.175 U.3 U.475 U.52 U.5 U.4 U.69 J. U.175 U.151 U MW-13 4/4/ J U.1 U UJ.175 U.37 J.475 U.52 U.5 U.4 U.45 J. U.175 U U 5 MW-13 5/8/ J J U.41 J U.17 U.3 U.47 U.52 U.5 U.4 U.28 U. U.17 U.921 U.944 U 6 MW-13 6/12/ J J U.38 J U.9 U.3 U.47 U.52 U.5 U.4 U.31 J. U.17 U.262 U.285 U 7 MW-13 7/12/ J U.48 J U.17 U.45 U.47 U.52 U.5 U.4 U.28 U. U.17 U U 8 MW-13 8/15/ J U.57 J U.17 U.45 U.47 U.52 U.5 U.4 U.33 J. U.17 U.882 UJ.12 UJ 9 (DM-1) MW-13 9/25/ J J MW-131 9/13/ J J J.26 J U.175 U.3 U.475 U.52 U.876 J.5 J.14 J. U.175 U MW /5/ U J.15 U J.31 J.3 U.475 U.52 U.842 J.4 U.46 J. U.33 J.435 U.455 U 3 MW-131 2/22/ J U.15 U.1317 J-.22 U.175 U.3 U.475 U.52 U.98 J.4 U.285 U. U.175 U U 4 MW-131 4/3/ J U.39 J U.175 U.3 U.475 U.52 U.937 J.4 U.36 J. U.175 U U 5 MW-131 5/1/217. U U.2 J U.9 U.76 J.47 U.52 U.942 J.4 U.28 U. U.17 U U 6 MW-131 6/9/ J U.15 U U.9 U.3 U.47 U.52 U.927 J.4 U.28 U.5 U.17 U U 7 MW-131 7/5/ J U.15 U U.17 U.45 U.47 U.52 U.954 J.4 U.28 U. U.17 U U 8 MW-131 8/1/ J J U.15 U U.17 U.235 J.47 U.52 U.1 J.4 J.28 U. U.17 U U 9 (DM-1) MW-131 9/21/ J MW-132 9/13/ J J U.175 U U.52 U J U U 2 MW-132 /3/ J J.5 J.3 U.51 J.7 J U J.35 J.447 U.51 U 3 MW-132 2/7/ U.22 J.3 U.475 U.52 U U J.175 U.2 U.45 U 4 MW-132 4/4/ U.175 U.3 U.475 U.52 J U J.175 U.134 U.193 U 5 MW-132 5/1/ U.9 U.21 J.47 U.63 J U J.17 U.1 U.27 U 6 MW-132 6/9/ U.9 U.19 J.71 J.138 J U.43.5 U.17 U U 7 MW-132 7/5/ U.17 U.48 J.77 J.141 J U U MW-132 8/1/ J U.17 U.144 J.47 U.52 U J J.17 U.16 U.25 U 9 (DM-1) MW-132 9/13/ MW-133 9/12/ J J.53 J U.2 J.3 U.61 J.52 U.2391 J.7 J.42 J. U.2 J U 2 MW /5/ U.24 J U.175 U.3 U.475 U.52 U.2347 J.4 U.276 J. U.175 U.627 U.74 U 3 MW-133 (D) 2/15/ U.1 U U.175 U.3 U.475 U.52 U.1977 J.4 U.289 J. U.175 U.179 U.586 U 3 MW-133 2/15/ U.1 U U.175 U.3 U.475 U.52 U.22 J.4 U.267 J. U.175 U U 4 MW-133 4/3/ J U.1 U UJ.175 U.3 UJ.475 U.52 U.1968 J.7 J.276 J. U.175 U U 5 MW-133 5/2/ J U.22 J U.17 U.3 U.47 U.52 U.234 J.4 U.396 J. U.17 U U 6 MW-133 6/9/ U.67 J U.23 J.3 U.47 U.52 U.2348 J.4 U.366 J.5 U.17 U U 7 MW-133 7/5/ U.22 J U.17 U.45 U.47 U.52 U.262 J.4 U.274 J. U.17 U U 8 MW-133 8/1/ J U.23 J U.17 U.45 U.47 U.52 U.214 J.4 J.182 J. U.17 U.19 U.69 9 (DM-1) MW-133 9/13/ J MW-134 9/12/ J J-.5 J U.38 J U.175 U.3 U.475 U.52 U.667 J.7 J.858. U.175 U U 2 MW /7/ J U.15 U U.175 U.3 U.475 U.52 U.1362 J.4 J.126 J.135 J.175 U.43 U MW-134 2/15/217.5 J J U.19 J U.175 U.3 U.475 U.52 U.726 J.4 U.89 J. U.175 U MW-134 4/3/ J J J U.77 J U.175 U.3 U.475 U.52 U.688 J.5 J.65 J. U.175 U MW-134 5/3/ J J U U.17 U.3 U.47 U.52 U.641 J.4 U.44 J. U.17 U U PCI/L Sheet 2 of 3

18 TABLE 3-1 CCR RULE GROUNDWATER MONITORING ANALYTICAL RESULTS SUMMARY FT. MARTIN CCB LANDFILL ANNUAL GROUNDWATER SAMPLING EVENT NO. 2 WELL ID3 SAMPLE DATE BORON METALS MG/L APPENDIX III (all Chemical Constituents sampled as TOTAL RECOVERABLE) 1 APPENDIX IV (all Chemical Constituents sampled as TOTAL RECOVERABLE) 1 CALCIUM CHLORIDE FLUORIDE PH SULFATE TDS ANTIMONY ARSENIC BARIUM BERYLLIUM CADMIUM CHROMIUM COBALT LEAD LITHIUM MERCURY MOLYBDENUM SELENIUM METALS MISC MISC MISC MISC MISC METALS METALS METALS METALS METALS METALS METALS MG/L MG/L MG/L S.U. MG/L MG/L MG/L MG/L MG/L MG/L MG/L MG/L MG/L MG/L MG/L MG/L MG/L MG/L MG/L METALS THALLIUM RADIUM-226 PCI/L RADIUM-228 METALS METALS METALS METALS METALS RADIOCHEM RADIOCHEM 6 MW-134 6/5/ U.17 J U.17 U.5 U.47 U.52 U.1591 J.4 U.144 J. U.17 U MW-134 7// J J U.42 J U.17 U.45 U.47 U.52 U.647 J.4 U.44 J. U.17 U U 8 MW-134 8/14/ J U U.56 J U.17 U.45 U.47 U.52 U.713 J.5 J.28 U. U.17 U 1 U.379 U 9 (DM-1) MW-134 9/21/ J J MW-135 9/1/ J J U.175 U.65 J.15 J.52 U.73 J.4 U U.175 U U 2 MW /14/ J U U.175 U.3 U.67 J.52 U.752 J.4 U.333 J. U.175 U.82 J MW-135 2/21/ J U U J-.44 U.7 J.6 U.66 J.14 U.787 J.4 U.22 J. U.4 J U 4 MW-135 3/3/ J U U.1 U U.9 U.3 U.52 J.52 U.648 J.4 U.288 J. U.175 U U 5 MW-135 5/2/217. U U.33 J U.17 U.3 U.47 U.52 U.745 J.4 U.32 J. U.17 U U 6 MW-135 6/6/ J U.82 J U.17 U.3 U.47 U.52 U.682 J.4 U.165 J.5 U.17 U U 7 MW-135 7/1/ J U.82 J U.17 U.45 U.65 J.52 U.773 J.4 U.21 J. U.17 U U 8 MW-135 8/9/ J U.68 J U.17 U.45 U.47 U.52 U.89 J.5 J.77 J. U.17 U (DM-1) MW-135 9/19/ J J MW-136 8/31/ J J.64 J U.175 U.3 U.134 J.52 U.5 U.4 U U.175 U U 2 MW /13/216.2 J U U.175 U.3 U.151 J.52 U.1364 J.4 J.331 J. UJ.175 U.724 U.84 3 MW-136 2/6/ J U.51 J U.175 U.3 U. J.52 U.5 U.12 U.221 J. U.175 U.225 U MW-136 3/29/ J U.1 U U.9 U.3 U.475 U.52 U.5 U.4 U.296 J. U.175 U U 5 MW-136 4/28/217. U J U.42 J U.1 U.3 U.47 U.52 U.5 U.4 U.133 J. U.17 U MW-136 5/1/ U.422 U 6 MW-136 6/8/ J U.15 U U.17 U.3 U.47 U.52 U.5 U.4 U.17 J. U.17 U MW-136 7/5/ J U.41 J U.17 U.45 U.47 U.52 U.5 U.4 U.13 J. U.17 U MW-136 8/8/ J U.4 J U.17 U.45 U.47 U.52 U.5 U.4 U.123 J. U.17 U 1 U.229 U 9 (DM-1) MW-136 9/13/ J MW-137 (D) 8/31/ J J.85 J U.175 U.5 U.4 J.52 U.5 U.4 U.347 J. U.175 U U 1 MW-137 8/31/ J J.7 J U.175 U.3 U.18 J.52 U.5 U.4 U.332 J. U.175 U U 2 MW /13/ J U.34 J U.175 U.3 U.475 U.52 U.1329 J.4 U.867. U.175 U.71 J.519 U 3 MW-137 2/8/ J J J.1 U U.175 U.3 U.64 J.52 U.566 J.4 U.71 J. U.175 U.49.5 U 4 MW-137 3/3/ J J U.1 U U.9 U.3 U.475 U.52 U.5 U.4 U.56 J. U.175 U U 5 MW-137 4/28/217. U J U.55 J U.9 U.6 U.95 U.52 U.1 U.4 U.87 J. U.17 U MW-137 5/1/ MW-137 6/8/ J J U.15 U J.17 U.3 U.52 J.52 U.546 J.4 U.218 J. U.36 J MW-137 7/5/ J J U.2 J U.17 U.45 U.47 U.52 U.5 U.4 U.199 J. U.17 U U 8 MW-137 8/8/ J J J U.43 J U.17 U.45 U.47 U.52 U.5 U.4 U.171 J. U.17 U 1 U.695 U 9 (DM-1) MW-137 9/13/ J J MW-138 8/3/216.3 J U.37 J U.3 J.3 U.68 J.52 U.1734 J.4 U.5 J. U.175 U MW /12/ J U.15 U U.175 U.3 U.65 J.52 U.1599 J.4 U.57 J. U.175 U 1.5 J MW-138 2/13/ J U.1 U U.175 U.3 U.74 J.52 U.156 J.4 U.42 J. U.175 U MW-138 3/29/ J U.1 U U.9 U.3 U.84 J.52 U.1258 J.4 U.285 U. U.175 U MW-138 4/28/ J J U.18 J U.9 U.3 U.72 J.52 U.1314 J.4 U.28 U.122 J.17 U MW-138 5/1/ U 6 MW-138 6/7/ J U.2 J U.17 U.3 U.47 U.52 U.1313 J.5 J.28 U.5 U.17 U MW-138 7/6/ J U.15 U U.17 U.45 U.86 J.52 U.1362 J.5 J.43 J. U.17 U MW-138 (D) 8/8/ J J- 72 J.17 U.15 U U.17 U.45 U.71 J.52 U.1556 J.4 U.28 U. U.17 U 1 U MW-138 8/8/ J U.15 U U.17 U.45 U.74 J.52 U.1435 J.4 U.28 U. U.17 U 1 U.37 U 9 (DM-1) MW-138 9/18/ J MW-139 8/29/ U.175 U.3 U.63 J.52 U.158 J.2 U.133 J.27 J.175 U U 2 MW /12/ J J.59 J U.175 U.3 U.8 J.52 U.98 J.4 U.81 J. U.175 U.566 U MW-139 2/9/ J J.1 U U.175 U.3 U.475 U.52 U.168 J.4 U.181 J. U.175 U.236 U.517 U 4 MW-139 3/29/ U.1 U U.9 U.3 U.475 U.52 U.1982 J.4 U.177 J. U.175 U U 5 MW-139 4/28/ J J U U.9 U.78 J.47 U.52 U.193 J.4 U.153 J.125 J.17 U MW-139 5/1/ U 6 MW-139 6/7/ J U.53 J U.17 U.3 U.47 U.52 U.2274 J.4 U.176 J.5 U.17 U.829 U.68 7 MW-139 (D) 7/6/ J U.48 J U.17 U.45 U.47 U.52 U.188 J.4 U.134 J. U.17 U U 7 MW-139 7/6/ J J.5 J U.17 U.45 U.47 U.52 U.1763 J.6 J.122 J. U.17 U U 8 MW-139 8/8/ J J U.34 J U.17 U.45 U.47 U.52 U.972 J.4 U.99 J. U.17 U 1 U.32 U 9 (DM-1) MW-139 9/18/ J PCI/L NOTES: 1 Lab analyses were completed by Beta Lab and TestAmerica Laboratories, Inc., both of which are accredited/certified laboratories: Beta Lab ISO/IEC 1725 Cert No (Exp ) and ISO/IEC 91 Cert. No IS7 (Exp ) and TestAmerica NELAP Identification Number: 2-416, EPA Region: 3, Expiration Date: Event Nos. 1 through 8 were background/baseline sampling events. Event No. 9 was the initial Detection Monitoring (DM-1) sampling event. 3 Field duplicate samples that were taken for Quality Control purposes are noted with a (D). DATA QUALIFER DEFINITIONS: The following definitions provide brief explanations of the validation qualifiers assigned to results in the data review process. U J The analyte was analyzed for, but was not detected at a level greater than or equal to the level of the adjusted method detection limit for sample and method. The analyte was positively identified and the associated numerical value is the approximate concentration of the analyte in the sample (due either to the quality of the data generated because certain quality control criteria were not met, or the concentration of the analyte was below the reporting limit). J+ The result is an estimated quantity, but the result may be biased high. J- The result is an estimated quantity, but the result may be biased low. UJ The analyte was analyzed for, but was not detected. The reported detection limit is approximate and may be inaccurate or imprecise. R The sample result (detected) is unusable due to the quality of the data generated because certain criteria were not met. The analyte may or may not be present in sample UR The sample result (nondetected) is unusable due to the quality of the data generated because certain criteria were not met. The analyte may or may not be present in sample. Sheet 3 of 3

19 January ANNUAL CCR GROUNDWATER FIGURES

20 MW MW-125 (171.12) (178.31) CCB LANDFILL FIRSTENERGY CORPORATION PENNSYLVANIA 3 7GREENSBURG, /19/18 DRAWN BY: S. PAXTON CHECKED BY: B. BAKER 1/19/18 APPROVED BY: B. BAKER 1/19/ CONTRACT NUMBER: 212C-SW FORT MARTIN POWER STATION CCR RULE GROUNDWATER MONITORING SYSTEM > MW-14 (196.9) Feet 442 (193.76) MW Topographic Contour (1-foot) > MW-15 (193.3) 19 1 (4.82) (9.96) MW Approximate Waste Boundary 2 1 Connellsville Sandstone Outcrop (151.58) MW-13 Geology Outcrop MW-131 (22.57) 6 4 (4.82) Groundwater Elevation April 217 MW Connellsville Sandstone Clarksburg Formation Groundwater Elevation Contour MW-16 (5.56) Connellsville Sandstone Approximate Parcel Boundary Original Landfill Clarksburg Formation Pre-Existing Well (Groundwater Level) > 6 7 Connellsville Sandstone Pre-Existing Well (CCR Monitoring) New Well (CCR Monitoring) 2 (182.87) MW MW-17 Legend 5 (8.78) 2 MW-19 (192.76) 8 1 (194.) (165.6) MW- MW MW MW-121 (178.13) Coordi na tes a re i n NAD 1983 Sta te Pl a ne Wes t Vi rgi ni a North (feet) Phase 2 Expansion Area Landfill 3 (.83) 2 (192.62) (156.68) MW-127 MW MW-139 EASTING (17.26) (155.17) 3 Phase 1 Expansion Area Landfill MW-138 MW (162.95) 16 MW-136 NORTHING WELL_NO MW- MW-14 MW-15 MW-16 MW-17 MW-19 1 MW-2 MW-121 MW-123 MW-125 MW-127 MW-128 MW-129 MW-13 MW-131 MW-132 MW-133 MW-134 MW-135 MW-136 MW-137 MW-138 MW ³ References: 1. Aerial photograph provided by ESRI's ArcGIS Online World Imagery map service ( 214 ESRI and its data suppliers). 2. Contours obtained from the West Virginia GIS Technical Center. 3. Monitoring wells MW- through MW-19 locations were obtained from FirstEnergy Drawing No. C , Rev. A. 4. Monitoring wells MW-2, MW-6, MW-8, and MW-12 locations were obtained from HydroSystems Management, Inc. (HMI) report titled "Installation of New Monitoring Wells", dated 12/5/ Monitoring wells MW-121 through MW-128 locations were obtained from Potesta & Associates, Inc. report titled "Report of Installation and Testing, Groundwater Monitoring System", dated 1/29/ Approximate Waste Boundary lines were obtained from FirstEnergy 12 Drawing Nos. C69515, Rev. A and C , Rev.. 7. Approximate Parcel Boundary obtained from FirstEnergy Drawing Nos. C and C , dated 8/4/ Monitoring wells MW-129 through MW-139 were installed by Tetra Tech, Inc. in June 216. As-built well locations were obtained by field survey performed by Tetra Tech, Inc. on PGH P:\GIS\FIRST_ENERGY\MAPDOCS\FORTMARTIN_PROPOSED_MW_APR217_CCR.MXD 1/19/18 SP FIGURE NUMBER REVISION 1848