Annual Groundwater Monitoring Report

Transcription

1 nnual Grounwater Monitoring Report ppalachian Power Company John E. mos Plant Bottom sh CCR Management Unit Winfiel, West Virginia January 2018 Prepare by: merican Electric Power Service Corporation 1 Riversie Plaza Columbus, Ohio 43215

2 Table of Contents Page I. Overview... 1 II. Grounwater Monitoring Well Locations an Ientification Numbers... 3 III. Monitoring Wells Installe or Decommissione... 4 IV. Grounwater Quality Data an Static Water Elevation Data, With Flow Rate an Direction... 4 V. Discussion bout Transition Between Monitoring Requirements or lternate Monitoring Frequency... 4 VI. Other Information Require... 4 VII. Description of ny Problems Encountere in 2017 an ctions Taken... 5 VIII. Projection of Key ctivities for the Upcoming Year... 5 ppenix I ppenix II i

3 I. Overview This nnual Grounwater Monitoring Report (Report) has been prepare to report the status of activities for the preceing year for an existing Bottom sh CCR unit at ppalachian Power Company s, a wholly-owne subsiiary of merican Electric Power Company (EP), John E. mos Power Plant. The USEP s CCR rules require that the nnual Grounwater Monitoring Report be poste to the operating recor for the preceing year no later than January 31, In general, the following activities were complete: Monitoring wells that were previously installe an evelope were certifie as the grounwater monitoring system aroun the CCR unit, in accorance with the requirements of 40 CFR 2.91 pursuant to EP s Grounwater Monitoring Network Evaluation Report (March 2017); Grounwater samples were collecte an analyze for ppenix III an ppenix IV constituents, as specifie in 40 CFR 2.94 et seq. an EP s Grounwater Sampling an nalysis Plan (July 2016); Grounwater ata unerwent various valiation tests, incluing tests for completeness, vali values, transcription errors, an consistent units; Backgroun ata for each ppenix III an ppenix IV constituent were establishe; Detection Monitoring sampling was initiate; an EP s Statistical nalysis Plan (pril 2017) was prepare, certifie, an poste to EP s CCR website in pril The Statistical nalysis Plan (pril 2017) is a statistical process in accorance with 40 CFR 2.93 to evaluate grounwater ata. The statistical process was guie by USEP s Statistical nalysis of Grounwater Monitoring Data at RCR Facilities, Unifie Guiance ( Unifie Guiance, USEP, 2009). Data evaluation is uner way. The major components of this annual report as specifie in 40 CFR 2.90, to the extent applicable at this time, are presente in sections that follow: figure showing the CCR management unit(s), all grounwater monitoring wells an monitoring well ientification numbers; Ientification of any monitoring wells that were installe or ecommissione uring the preceing year, along with a statement as to why that happene; ll of the monitoring ata collecte, incluing the rate an irection of grounwater flow, plus a summary showing the number of samples collecte per monitoring well, the ates the samples were collecte an whether the sample was collecte as part of etection monitoring or assessment monitoring programs (ttache as ppenix I); 1

4 summary of any transition between monitoring programs or an alternate monitoring frequency, for example the ate an circumstances for transitioning from etection monitoring to assessment monitoring, in aition to ientifying the constituents etecte at a statistically significant increase over backgroun concentrations (ttache as ppenix II, where applicable); an Other information require to be inclue in the annual report such as alternate source emonstration or assessment of corrective measures, if applicable. In aition, this report summarizes key actions complete, an where applicable, escribes any problems encountere an actions taken to resolve those problems. The report inclues a projection of key activities for the upcoming year. 2

5 II. Grounwater Monitoring Well Locations an Ientification Numbers The figure that follows epicts the PE-certifie grounwater monitoring network, the monitoring well locations, an their corresponing ientification numbers. The grounwater quality monitoring network inclues four upgraient wells (MW-6, MW-1601, MW-1602, an MW- 1603) an 6 owngraient wells (MW-1, MW-4, MW-5, MW-1604, MW-1605, an MW- 1606). The monitoring well istribution aequately covers owngraient an upgraient areas as etaile in the Grounwater Monitoring Network Evaluation Report that was place in the merican Electric Power CCR public internet site on March 9,

6 ³ MW-1 Clearwater MW-1605 Reclaim na Ka MW-4 MW-5 ha w Ri MW-1604 r ve MW-1606 MW-6 Bottom sh 1 MW-1603 Bill's C Roa re e k Bottom sh 1B Pyrites MW-1601 i el in f W a Ro Switchyar (W V 81 7) MW-1602 Legen Monitoring Well Network Upgraient Sampling Location Downgraient Sampling Location Notes - Monitoring well coorinates provie by EP. - Site features base on information available in the sh - CCR Grounwater Monitoring Well Network Evaluation - mos Plant (rcais, 2016) provie by EP. sh System Site Layout sh System Feet EP mos Generating Plant Winfiel, West Virginia Figure Columbus, Ohio P:\Projects\EP\Grounwater Statistical Evaluation - CH8423\Grounwater Mapping\GIS Files\MXD\mos\EP-mos_BP_Site_Layout.mx. CGregory. 1/26/2018. CH /01/26 1

7 III. Monitoring Wells Installe or Decommissione There were no monitoring wells installe or ecommissione in The network esign, as summarize in the Grounwater Monitoring Network Evaluation Report (March 2017) an as poste at the CCR web site for John E. mos Plant, i not change. That evaluation report, viewable on the EP CCR web site, iscusses the facility location, the hyrogeological setting, the hyrostratigraphic units, the uppermost aquifer, an the esign of the grounwater monitoring well network incluing owngraient an upgraient monitoring well locations. IV. Grounwater Quality Data an Static Water Elevation Data, With Flow Rate an Direction ppenix I contains tables showing the grounwater quality ata collecte uring the establishment of backgroun quality an the first etection monitoring event. Static water elevation ata from each monitoring event also are shown in ppenix I, along with the grounwater velocity eterminations, grounwater flow irection, an potentiometric maps evelope after each sampling event. V. Discussion bout Transition Between Monitoring Requirements or lternate Monitoring Frequency s of this first annual grounwater report ate there has been no transition between etection monitoring an assessment monitoring. Detection monitoring will continue in The sampling frequency of twice per year will be maintaine for the ppenix III parameters (boron, calcium, chlorie, fluorie, ph, sulfate an total issolve solis). Regaring efining an alternate monitoring frequency, the grounwater velocity an monitoring well prouction is high enough at this facility that no moification of the twice-per-year etection monitoring effort is neee. VI. Other Information Require t the appropriate time, the geochemical analyses couple with the statistical analyses of the grounwater quality ata will etermine whether an alternate source or alternate sources are affecting grounwater chemistry. In those cases where an alternative source(s) emonstration is mae, those analyses an supporting information will be presente as well. 4

8 VII. VIII. Description of ny Problems Encountere in 2017 an ctions Taken No significant problems were encountere. The low-flow sampling effort went smoothly an the scheule was met to support this first annual grounwater report preparation. Projection of Key ctivities for the Upcoming Year Key activities for 2018 inclue: Detection monitoring on a twice per year scheule; Evaluation of the first etection monitoring results from a statistical analysis viewpoint, looking for any statistically significant increases, or ecreases when ph is consiere; Responing to any new ata receive in light of what the CCR rule requires; an Preparation of the secon annual grounwater report. 5

9 PPENDIX I ppenix I contains Table 1 isplaying a summary of the grounwater monitoring ata collecte, Table 2 isplaying the velocity of grounwater flow, an Figures 1-9 epicting the irection of grounwater flow as potentiometric surface map. The ates that the samples were collecte also is shown. Since this is the first annual grounwater report, which summarizes only the 2017 activities, there is no nee to state whether each sample was collecte as part of a etection monitoring or an assessment monitoring program. 6

10 PPENDIX I.1 Table 1 Grounwater nalysis Results Summary

11 Table 1: Grounwater Data Summary mos Plant - Bottom sh BP-MW-1 BP-MW-4 Parameter Unit 7/26/2016 8/22/ /19/ /7/ /13/2016 2/7/2017 3/13/2017 5/22/2017 6/20/ /1/2017 7/25/2016 8/23/ /18/ /8/ /12/2016 2/8/2017 3/14/2017 5/22/2017 6/19/ /1/2017 Backgroun Detection Backgroun Detection ntimony µg/l J J J J J J J J J J J J J J J - rsenic µg/l Barium µg/l Beryllium µg/l Boron mg/l Camium µg/l Calcium mg/l Chlorie mg/l Chromium µg/l Cobalt µg/l Combine Raium pci/l Fluorie mg/l <0.05 U <0.05 U <0.05 U - <0.05 U J J J <0.02 U J J J <0.05 U J J J J J J Lea µg/l Lithium mg/l J J Mercury µg/l <0.002 U <0.002 U <0.002 U - <0.002 U <0.002 U <0.002 U J <0.002 U - <0.002 U <0.002 U <0.002 U - <0.002 U <0.002 U <0.002 U <0.002 U <0.002 U - Molybenum µg/l Selenium µg/l J J J J J J J J J Total Dissolve Solis mg/l Sulfate mg/l Thallium µg/l J J J J J J J ph SU Notes: µg/l: micrograms per liter mg/l: milligrams per liter pci/l: picocuries per liter SU: stanar unit U: Non-etect value. Parameters which were not etecte are shown as less than the metho etection limit (MDL). J: Estimate value. Parameter was etecte in concentrations below the reporting limit. -: Not sample For statistical analysis, parameters which were not etecte were replace with the reporting limit. Page 1 of 5

12 Table 1: Grounwater Data Summary mos Plant - Bottom sh BP-MW-5 BP-MW-6 Parameter Unit 7/26/2016 8/23/ /18/ /8/ /12/2016 2/8/2017 3/14/2017 5/22/2017 6/19/ /1/2017 7/26/2016 8/24/ /19/ /8/ /13/2016 2/8/2017 3/14/2017 5/23/2017 6/20/ /1/2017 Backgroun Detection Backgroun Detection ntimony µg/l J J J J J J J J J J J J J J - rsenic µg/l Barium µg/l Beryllium µg/l Boron mg/l J <0.002 U Camium µg/l J J J J J J J J J J J J J J J <0.005 U - Calcium mg/l Chlorie mg/l Chromium µg/l Cobalt µg/l Combine Raium pci/l Fluorie mg/l J J <0.05 U J J J J J J J J J J J J J J Lea µg/l Lithium mg/l J J < U J - Mercury µg/l <0.002 U <0.002 U <0.002 U - <0.002 U <0.002 U <0.002 U <0.002 U <0.002 U - <0.002 U <0.002 U <0.002 U - <0.002 U <0.002 U <0.002 U <0.002 U <0.002 U - Molybenum µg/l Selenium µg/l <0.03 U <0.03 U J J <0.03 U <0.03 U J J Total Dissolve Solis mg/l Sulfate mg/l Thallium µg/l J J J J J J <0.01 U <0.01 U ph SU Notes: µg/l: micrograms per liter mg/l: milligrams per liter pci/l: picocuries per liter SU: stanar unit U: Non-etect value. Parameters which were not etecte are shown as less than the metho etection limit (MDL). J: Estimate value. Parameter was etecte in concentrations below the reporting limit. -: Not sample For statistical analysis, parameters which were not etecte were replace with the reporting limit. Page 2 of 5

13 Table 1: Grounwater Data Summary mos Plant - Bottom sh BP-MW-1601 BP-MW-1602 Parameter Unit 7/26/2016 8/24/ /18/ /7/ /13/2016 2/7/2017 3/13/2017 5/23/2017 6/20/ /2/2017 7/26/2016 8/24/ /19/ /9/ /13/2016 2/8/2017 3/15/2017 5/23/2017 6/20/ /2/2017 Backgroun Detection Backgroun Detection ntimony µg/l J <0.01 U J J <0.01 U <0.01 U J J J J J rsenic µg/l Barium µg/l Beryllium µg/l J J Boron mg/l <0.002 U - <0.002 U J - <0.002 U Camium µg/l J J J J J J J J J J J J J J - Calcium mg/l Chlorie mg/l Chromium µg/l Cobalt µg/l Combine Raium pci/l Fluorie mg/l J J J J J J J J J J J J J J J J J Lea µg/l Lithium mg/l J < U - Mercury µg/l <0.002 U <0.002 U <0.002 U - <0.002 U <0.002 U <0.002 U <0.002 U <0.002 U - <0.002 U <0.002 U J J <0.002 U J <0.002 U <0.002 U - Molybenum µg/l Selenium µg/l J J J J J Total Dissolve Solis mg/l Sulfate mg/l Thallium µg/l J J J J J J J J J J J <0.01 U J - ph SU Notes: µg/l: micrograms per liter mg/l: milligrams per liter pci/l: picocuries per liter SU: stanar unit U: Non-etect value. Parameters which were not etecte are shown as less than the metho etection limit (MDL). J: Estimate value. Parameter was etecte in concentrations below the reporting limit. -: Not sample For statistical analysis, parameters which were not etecte were replace with the reporting limit. Page 3 of 5

14 Table 1: Grounwater Data Summary mos Plant - Bottom sh BP-MW-1603 BP-MW-1604 Parameter Unit 7/26/2016 8/24/ /19/ /9/ /13/2016 2/9/2017 3/15/2017 5/24/2017 6/20/ /2/2017 7/26/2016 8/22/ /18/ /8/ /13/2016 2/8/2017 3/14/2017 5/23/2017 6/20/ /1/2017 Backgroun Detection Backgroun Detection ntimony µg/l J J J J J J J J J J J J J J J - rsenic µg/l Barium µg/l Beryllium µg/l Boron mg/l <0.002 U - <0.002 U Camium µg/l J J J J J J J J J J - <0.004 U <0.004 U <0.004 U <0.005 U <0.005 U - Calcium mg/l Chlorie mg/l Chromium µg/l Cobalt µg/l Combine Raium pci/l Fluorie mg/l J J J J J Lea µg/l Lithium mg/l < U J < U J Mercury µg/l <0.002 U <0.002 U <0.002 U - <0.002 U <0.002 U J <0.002 U <0.002 U - <0.002 U J <0.002 U - <0.002 U <0.002 U <0.002 U <0.002 U <0.002 U - Molybenum µg/l Selenium µg/l J J J Total Dissolve Solis mg/l Sulfate mg/l <0.04 U <0.04 U <0.04 U <0.04 U <0.04 U <0.04 U <0.04 U <0.04 U Thallium µg/l J <0.01 U J J J <0.01 U J J J J J J <0.01 U <0.01 U <0.01 U - ph SU Notes: µg/l: micrograms per liter mg/l: milligrams per liter pci/l: picocuries per liter SU: stanar unit U: Non-etect value. Parameters which were not etecte are shown as less than the metho etection limit (MDL). J: Estimate value. Parameter was etecte in concentrations below the reporting limit. -: Not sample For statistical analysis, parameters which were not etecte were replace with the reporting limit. Page 4 of 5

15 Table 1: Grounwater Data Summary mos Plant - Bottom sh BP-MW-1605 BP-MW-1606 Parameter Unit 7/26/2016 8/22/ /17/ /8/ /12/2016 2/7/2017 3/13/2017 5/22/2017 6/19/ /1/2017 7/25/2016 8/23/ /17/ /7/ /12/2016 2/7/2017 3/14/2017 5/23/2017 6/19/ /1/2017 Backgroun Detection Backgroun Detection ntimony µg/l J J J J J J J J J J J J J J J J - rsenic µg/l Barium µg/l Beryllium µg/l Boron mg/l <0.002 U <0.002 U Camium µg/l <0.004 U <0.004 U <0.004 U J <0.004 U <0.004 U <0.005 U <0.005 U Calcium mg/l Chlorie mg/l Chromium µg/l Cobalt µg/l Combine Raium pci/l Fluorie mg/l J J <0.05 U <0.05 U J J <0.02 U J J <0.05 U <0.05 U - <0.02 U <0.05 U <0.05 U <0.05 U <0.05 U <0.05 U Lea µg/l Lithium mg/l < U - Mercury µg/l <0.002 U <0.002 U <0.002 U - <0.002 U <0.002 U <0.002 U <0.002 U <0.002 U - <0.002 U <0.002 U J - <0.002 U <0.002 U <0.002 U <0.002 U <0.002 U - Molybenum µg/l J Selenium µg/l J J J J J J J J J - Total Dissolve Solis mg/l Sulfate mg/l Thallium µg/l <0.01 U <0.01 U <0.01 U J <0.01 U J <0.01 U J J J J J J J J - ph SU Notes: µg/l: micrograms per liter mg/l: milligrams per liter pci/l: picocuries per liter SU: stanar unit U: Non-etect value. Parameters which were not etecte are shown as less than the metho etection limit (MDL). J: Estimate value. Parameter was etecte in concentrations below the reporting limit. -: Not sample For statistical analysis, parameters which were not etecte were replace with the reporting limit. Page 5 of 5

16 PPENDIX I.2 Table 2 Grounwater Velocity an Resience Time Determination

17 Table 2: Resience Time Calculation Summary - Bottom sh mos Bottom sh Geosyntec Consultants, Inc CCR Management Unit Monitoring Well Well Diameter (inches) Grounwater Velocity (ft/year) Grounwater Resience Time (ays) Grounwater Velocity (ft/year) Grounwater Resience Time (ays) Grounwater Velocity (ft/year) Grounwater Resience Time (ays) Grounwater Velocity (ft/year) Grounwater Resience Time (ays) Bottom sh MW-1 [2] MW-4 [2] MW-5 [2] MW-6 [1] MW-1601 [1] MW-1602 [1] MW-1603 [1] MW-1604 [2] MW-1605 [2] MW-1606 [2] CCR Management Unit Bottom sh Monitoring Well Well Diameter (inches) Grounwater Velocity (ft/year) Grounwater Resience Time (ays) Grounwater Velocity (ft/year) Grounwater Resience Time (ays) Grounwater Velocity (ft/year) Grounwater Resience Time (ays) Grounwater Velocity (ft/year) Grounwater Resience Time (ays) Grounwater Velocity (ft/year) MW-1 [2] MW-4 [2] MW-5 [2] MW-6 [1] MW-1601 [1] MW-1602 [1] MW-1603 [1] MW-1604 [2] MW-1605 [2] MW-1606 [2] Grounwater Resience Time (ays) Notes: [1] - Backgroun Well [2] - Downgraient Well

18 PPENDIX I.3 Potentiometric Figures

19 ³ MW Clearwater MW Reclaim r ve C Bill's MW Roa re e k 0 5 Ri MW ha w MW MW na Ka 56 MW MW Bottom sh 1B 2 Bottom sh 1 MW MW Pyrites 4 MW W i el in f a Ro Switchyar (W V ) MW MW Legen Monitoring Well Location Grounwater Flow Direction Grounwater Elevation Contour Notes - Monitoring well coorinates an water level ata (collecte on July 25, 2016) provie by EP. - Grounwater elevation units are feet above mean sea level. - Site features base on information available in the sh - CCR Grounwater Monitoring Well Network Evaluation - mos Plant (rcais, 2016) provie by EP Feet Grounwater Elevation Contour Map July 2016 EP mos Generating Plant - sh System Winfiel, West Virginia Figure Columbus, Ohio P:\Projects\EP\Grounwater Statistical Evaluation - CH8423\Grounwater Mapping\GIS Files\MXD\mos\EP-mos_BP_GW_July2016_rev.mx. CGregory. 12/26/2017. CH /12/26 1

20 ³ MW Clearwater Reclaim Ri r ve 7 C Bottom sh 1B MW Bill's 0 MW ha w MW Roa re e k MW na Ka MW MW MW Bottom sh 1 MW MW Pyrites 4 MW W i el in f a Ro Switchyar 6 (W V 81 7) MW MW Legen Monitoring Well Location Grounwater Flow Direction Grounwater Elevation Contour Notes - Monitoring well coorinates an water level ata (collecte on ugust 22, 2016) provie by EP. - Grounwater elevation units are feet above mean sea level. - Site features base on information available in the sh - CCR Grounwater Monitoring Well Network Evaluation - mos Plant (rcais, 2016) provie by EP Feet Grounwater Elevation Contour Map ugust 2016 EP mos Generating Plant - sh System Winfiel, West Virginia Figure Columbus, Ohio P:\Projects\EP\Grounwater Statistical Evaluation - CH8423\Grounwater Mapping\GIS Files\MXD\mos\EP-mos_BP_GW_ugust2016_rev.mx. CGregory. 12/26/2017. CH8423/04/ /12/26 2

21 ³ MW Clearwater 568 Reclaim MW ha w Ri MW MW na Ka MW r ve MW MW Roa k C re e Bill's 0 Bottom sh MW MW Bottom sh 1B MW Pyrites 5 MW W i el in f a Ro Switchyar (W V 81 7) MW MW Legen Monitoring Well Location Grounwater Flow Direction Grounwater Elevation Contour Notes - Monitoring well coorinates an water level ata (collecte on October 17, 2016) provie by EP. - Grounwater elevation units are feet above mean sea level. - Site features base on information available in the sh - CCR Grounwater Monitoring Well Network Evaluation - mos Plant (rcais, 2016) provie by EP Feet Grounwater Elevation Contour Map October 2016 EP mos Generating Plant - sh System Winfiel, West Virginia Figure Columbus, Ohio P:\Projects\EP\Grounwater Statistical Evaluation - CH8423\Grounwater Mapping\GIS Files\MXD\mos\EP-mos_BP_GW_October2016_rev.mx. CGregory. 12/26/2017. CH8423/04/ /12/26 3

22 ³ MW Reclaim 568 MW Bottom sh 1B r ve MW Ri MW ha w 9 56 Roa re e k C s ' l Bil MW MW na Ka MW MW Clearwater 2 Bottom sh 1 MW MW Pyrites 3 4 MW W i el in f a Ro Switchyar (W 5 V 81 7) MW MW Legen Monitoring Well Location Grounwater Flow Direction Grounwater Elevation Contour Notes - Monitoring well coorinates an water level ata (collecte on December 12, 2016) provie by EP. - Grounwater elevation units are feet above mean sea level. - Site features base on information available in the sh - CCR Grounwater Monitoring Well Network Evaluation - mos Plant (rcais, 2016) provie by EP Feet Grounwater Elevation Contour Map December 2016 EP mos Generating Plant - sh System Winfiel, West Virginia Figure Columbus, Ohio P:\Projects\EP\Grounwater Statistical Evaluation - CH8423\Grounwater Mapping\GIS Files\MXD\mos\EP-mos_BP_GW_December2016_rev.mx. CGregory. 12/26/2017. CH8423/04/ /12/26 4

23 ³ MW Clearwater Reclaim 568 r ve Bottom sh 1 5 Bottom sh 1B MW MW Pyrites Roa re e k C s ' l Bil MW MW MW Ri MW ha w 56 na Ka MW MW MW MW W i el in f a Ro Switchyar (W V 81 7) MW MW Legen Monitoring Well Location Grounwater Flow Direction Grounwater Elevation Contour Notes - Monitoring well coorinates an water level ata (collecte on February 7, 2017) provie by EP. - Grounwater elevation units are feet above mean sea level. - Site features base on information available in the sh - CCR Grounwater Monitoring Well Network Evaluation - mos Plant (rcais, 2016) provie by EP Feet Grounwater Elevation Contour Map February 2017 EP mos Generating Plant - sh System Winfiel, West Virginia Figure Columbus, Ohio P:\Projects\EP\Grounwater Statistical Evaluation - CH8423\Grounwater Mapping\GIS Files\MXD\mos\EP-mos_BP_GW_ _Feb.mx. CGregory. 12/27/2017. CH8423/04/ /12/27 5

24 ³ MW Clearwater 568 Reclaim ha w Ri r ve Bottom sh Bottom sh 1B MW MW Pyrites 7 4 na Ka 8 9 Roa re e k C s ' l Bil MW MW MW MW MW MW MW MW W i el in f a Ro Switchyar (W V 81 7) 6 MW MW Legen Monitoring Well Location Grounwater Flow Direction Grounwater Elevation Contour Notes - Monitoring well coorinates an water level ata (collecte on March 13, 2017) provie by EP. - Grounwater elevation units are feet above mean sea level. - Site features base on information available in the sh - CCR Grounwater Monitoring Well Network Evaluation - mos Plant (rcais, 2016) provie by EP Feet Grounwater Elevation Contour Map March 2017 EP mos Generating Plant - sh System Winfiel, West Virginia Figure Columbus, Ohio P:\Projects\EP\Grounwater Statistical Evaluation - CH8423\Grounwater Mapping\GIS Files\MXD\mos\EP-mos_BP_GW_ _March.mx. CGregory. 12/27/2017. CH8423/04/ /12/27 6

25 ³ MW Clearwater Reclaim 568 ha w Ri r ve 4 na Ka 2 3 Bottom sh 1 1 Bottom sh 1B MW MW Pyrites C Bill's Roa re e k MW MW MW MW MW MW MW MW W i el in f a Ro Switchyar (W V 81 7) MW MW Legen Monitoring Well Location Grounwater Flow Direction Grounwater Elevation Contour Notes - Monitoring well coorinates an water level ata (collecte on May 22, 2017) provie by EP. - Grounwater elevation units are feet above mean sea level. - Site features base on information available in the sh - CCR Grounwater Monitoring Well Network Evaluation - mos Plant (rcais, 2016) provie by EP Feet Grounwater Elevation Contour Map May 2017 EP mos Generating Plant - sh System Winfiel, West Virginia Figure Columbus, Ohio P:\Projects\EP\Grounwater Statistical Evaluation - CH8423\Grounwater Mapping\GIS Files\MXD\mos\EP-mos_BP_GW_ _May.mx. CGregory. 12/28/2017. CH8423/04/ /12/28 7

26 ³ MW Clearwater MW Reclaim 568 r ve Bottom sh Bottom sh 4 1B MW MW Pyrites Roa k C re e Bill's 1 MW MW MW Ri 9 ha w 56 MW na Ka MW MW MW W i el in f a Ro Switchyar (W V 81 7) MW MW Legen Monitoring Well Location Grounwater Flow Direction Grounwater Elevation Contour Notes - Monitoring well coorinates an water level ata (collecte on June 19, 2017) provie by EP. - Grounwater elevation units are feet above mean sea level. - Site features base on information available in the sh - CCR Grounwater Monitoring Well Network Evaluation - mos Plant (rcais, 2016) provie by EP Feet Grounwater Elevation Contour Map June 2017 EP mos Generating Plant - sh System Winfiel, West Virginia Figure Columbus, Ohio P:\Projects\EP\Grounwater Statistical Evaluation - CH8423\Grounwater Mapping\GIS Files\MXD\mos\EP-mos_BP_GW_ _June.mx. CGregory. 12/27/2017. CH8423/04/ /12/27 8

27 ³ MW Clearwater MW Reclaim MW MW ha w Ri MW na Ka 56 r ve MW MW C 7 8 Bill's Roa re e k 0 MW Bottom sh 1 1 Bottom sh 1B MW MW Pyrites MW i el in f W a Ro Switchyar (W V 81 7) MW MW Legen Monitoring Well Location Grounwater Flow Direction Grounwater Elevation Contour Notes - Monitoring well coorinates an water level ata (collecte on November 1, 2017) provie by EP. - Grounwater elevation units are feet above mean sea level. - Site features base on information available in the sh - CCR Grounwater Monitoring Well Network Evaluation - mos Plant (rcais, 2016) provie by EP Feet Grounwater Elevation Contour Map November 2017 EP mos Generating Plant - sh System Winfiel, West Virginia Figure Columbus, Ohio P:\Projects\EP\Grounwater Statistical Evaluation - CH8423\Grounwater Mapping\GIS Files\MXD\mos\EP-mos_BP_GW_ _Nov.mx. CGregory. 1/29/2018. CH8423/04/ /01/29 9

28 PPENDIX II Not pplicable. 7