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    2017 ANNUAL DAM AND DIKE INSPECTION REPORT CCR PONDS COMPLEX OKLAUNION POWER STATION VERNON, TEXAS November, 2017 Prepared by: American Electric Power Service Corporation 1 Riverside Plaza Columbus, OH 43215 GERS- 17- 052


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    Annual Dam and Dike Inspection Report (2017) November 1", 2017 Oklaunion Power Station CCR Ponds Complex Dam & Dike Inspection Report CCR Ponds Complex GERS-17-052 Revision O OKLAUNION POWER STATION VERNON, TEXAS INSPECTION DATE November 1, 2017 PREPARED BY “)/ _/) (_° DATE 11/20/2017 /Mohammad A.Ajfouni, Ph.D.,P.E. REVIEWED BY “74 D4 DATE 1/2//2417 Brian G. Palmer, P.E. APPROVED BY Alon, Furt. DATE woe Gary F. Zych, ER? Manager - Geotechnical Engineering SON E OF TEM DN oonen Ae, ee . zZè x & "a y g* È ng uvsarssonscserizaneeniasesenionia too GARsstocesenq 3Gs suecesecos ZYCeetHaati yor $4% YF.rsnansssev 4 127152 BF - PROFESSIONAL ENGINEER SEAL 8: SIGNATURE I certify to the best of my knowledge, information and belief the information containedin this report meets the requirements of 40 CFR § 257.83(b).


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    Annual Dam and Dike Inspection Report (2017) November 1st, 2017 Oklaunion Power Station CCR Ponds Complex TABLE OF CONTENTS 1.0 INTRODUCTION ................................................................................................................. 1 2.0 DESCRIPTIONS OF IMPOUNDMENT ............................................................................ 2 3.0 REVIEW OF AVAILABLE INFORMATION (257.83(b)(1)(i)) ....................................... 2 4.0 INSPECTION (257.83(b)(1)(ii)) ........................................................................................... 3 4.1 GENERAL ........................................................................................................................... 3 4.2 CHANGES IN GEOMETRY SINCE LAST INSPECTION (257.83(b)(2)(i))................... 4 4.3 CHANGES THAT EFFECT STABILITY OR OPERATION (257.83(b)(2)(vii)) ............. 4 4.4 IMPOUNDMENT CHARACTERISTICS (257.83(b)(2)(iii, iv, v)) ................................... 4 4.5 VISUAL INSPECTION (257.83(b)(2)(i)) ........................................................................... 5 Pond 6 - Wastewater Pond ..................................................................................................... 5 Pond 21 .................................................................................................................................. 5 Pond 22 .................................................................................................................................. 5 Pond 23 .................................................................................................................................. 5 Waste Water Sludge Pond ..................................................................................................... 6 4.6 INSTRUMENTATION (257.83(b)(2)(ii)) .......................................................................... 6 Piezometers ............................................................................................................................ 6 5.0 SUMMARY OF FINDINGS ................................................................................................. 8 5.1 MAINTENANCE ITEMS ................................................................................................... 8 5.2 ITEMS TO MONITOR........................................................................................................ 8 5.3 DEFICIENCIES (257.83(b)(2)(vi)) ..................................................................................... 8 LIST OF TABLES Table 1 Summary of Relevant Storage Information for the CCR Ponds Complex Table 2 CCR Ponds Maximum recorded instruments reading since the previous annual inspection LIST OF FIGURES Figure 1 Plant Inspection Vicinity Map Figure 2 CCR Pond Complex General Layout Figure 3A and B Piezometers Location Map Figure 4 CCR Ponds Piezometer Data Pond 21, Pond 22, Pond 23 and WWSP Figure 5 Pond 6 Piezometer Data ATTACHMENT ATTACHMENT A: Photographs – CCR Ponds iii


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    Annual Dam and Dike Inspection Report (2017) November 1st, 2017 Oklaunion Power Station CCR Ponds Complex 1.0 INTRODUCTION This report was prepared by AEP- Geotechnical Engineering Services (GES) section, in part, to fulfill requirements of 40 CFR 257.83 and to provide Public Service Company of Oklahoma and Oklaunion Power Station with an evaluation of the facility. The Oklaunion Power Station is owned by American Electric Power and is located at 12567 FM Rd 3430, Vernon, TX 76384. The plant is a coal-fired facility, which includes a number of wastewater evaporation ponds containing cooling tower blowdown. Five of the ponds are used to manage coal combustion residuals and other wastewater treatment solids. Figure 1 shows the plant inspection vicinity map. American Electric Power Service Corporation’s Civil Engineering Division administers the Oklaunion Power Station’s Dam Inspection and Maintenance Program (DIMP). As part of the DIMP, staff from the Geotechnical Engineering Services Section annually conducts dam and dike inspections. This report contains the inspection findings, observations, photographic descriptions, conclusions, and maintenance recommendations. This inspection report addresses the CCR Ponds Complex at the Oklaunion Power Station. A separate inspection report has been prepared for the wastewater ponds. The inspection was performed on October 31st, and November 1st 2017. Mr. Peter A. Civitarese, energy production superintendent was the plant contact. Mr. Mohammad Ajlouni and Mr. Brian Palmer conducted the field inspection. Weather conditions on October 31st were cloudy with temperatures in the mid to high 50's. Weather conditions on November 1st were sunny with good visibility, temperatures in the mid to high 70's. Inspection observations were briefly discussed with Plant Manager Monte McMahan, Maintenance Supervisor Nick Lee, Plant Environmental Coordinator Pat Hunter and Mr. Civitarese after completion of the field work. Page 1 of 8


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    Annual Dam and Dike Inspection Report (2017) November 1st, 2017 Oklaunion Power Station CCR Ponds Complex 2.0 DESCRIPTIONS OF IMPOUNDMENT The five CCR surface impoundments referenced as Ponds 6, 21, 22, 23 and the Waste Water and Sludge Pond, with a total area of 104.1 acres. Oklaunion Ponds for storing CCR include a 60+ acre pond for waste fly ash and bottom ash storage (Pond 6), two 5+ acre ponds for CCR (Pond 21 and Pond 22), a 13+ acre pond for CCR (Pond 23), and a 22+ acre pond for Waster Water and Sludge (WWSP) storage. These ponds are located at the south- central edge of the main evaporation pond complex of the generating station. The ponds were constructed as a continuous upground homogeneous earthen embankment with 3H:1V inboard and outboard slopes and crest width of 20 feet. The design elevation of the crest is 1215 feet. These evaporation ponds do not have any outlet structures or spillways and relies on evaporation to remove water from the impoundments. These impoundments retain the wastes until it is sufficiently dry to be hauled away and landfilled. Figure 2 shows the CCR pond complex general layout. 3.0 REVIEW OF AVAILABLE INFORMATION (257.83(b)(1)(i)) A review of available information regarding the status and condition of the CCR Ponds, which include files available in the CCR operating record, such as design and construction information, periodic structural stability assessments, previous 7 day inspection reports, 30-day instrumentation data, and previous annual inspections has been conducted. Based on the review of the data there were no signs of actual or potential structural weakness or adverse conditions. Page 2 of 8


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    Annual Dam and Dike Inspection Report (2017) November 1st, 2017 Oklaunion Power Station CCR Ponds Complex 4.0 INSPECTION (257.83(b)(1)(ii)) 4.1 GENERAL The summary of the visual observations uses terms to describe the general appearance or condition of an observed item, activity or structure. Their meaning is understood as follows: Good: A condition or activity that is generally better or slightly better than what is minimally expected or anticipated from a design or maintenance point of view. Fair or Satisfactory: A condition or activity that generally meets what is minimally expected or anticipated from a design or maintenance point of view. Poor: A condition or activity that is generally below what is minimally expected or anticipated from a design or maintenance point of view. Minor: A reference to an observed item (e.g., erosion, seepage, vegetation, etc.) where the current maintenance condition is below what is normal or desired, but which is not currently causing concern from a structure safety or stability point of view. Significant: A reference to an observed item (e.g. erosion, seepage, vegetation, etc.) where the current maintenance program has neglected to improve the condition. Usually, conditions that have been previously identified in the previous inspections, but have not yet been corrected. Excessive: A reference to an observed item (e.g., erosion, seepage, vegetation, etc.) where the current maintenance condition is below or worse than what is normal or desired, and which may have affected the ability of the observer to properly evaluate the structure or particular area being observed or which may be a concern from a structure safety or stability point of view. In addition, a “deficiency” is some evidence that a dam has developed a problem that could impact the structural integrity of the dam. There are four general categories of deficiencies. These four categories are described below: 1. Uncontrolled Seepage Uncontrolled seepage is seepage that is not behaving as the design engineer has intended. An example of uncontrolled seepage is seepage that comes through or around the embankment and is not picked up and safely carried off by a drain. Seepage that is collected by a drain can still be uncontrolled if it is not safely collected and transported, such as seepage that is not clear. Seepage that is unable to be measured and/or observe it is considered uncontrolled seepage. [Wet or soft areas are not considered as uncontrolled seepage, but can lead to this type of deficiency. These areas should be monitored frequently.] 2. Displacement: Displacement of the embankment is large scale movement of part of the dam. Common signs of displacement are cracks, scraps, bulges, depressions, sinkholes and slides. Page 3 of 8


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    Annual Dam and Dike Inspection Report (2017) November 1st, 2017 Oklaunion Power Station CCR Ponds Complex 3. Blockage of Control Features: Blockage of Control Features is the restriction of flow at spillways, decant or pipe spillways, or drains. 4. Erosion: Erosion is the gradual movement of surface material by water, wind or ice. Erosion is considered a deficiency when it is more than a minor routine maintenance item. 4.2 CHANGES IN GEOMETRY SINCE LAST INSPECTION (257.83(b)(2)(i)) No modifications have been made to the geometry of the CCR Ponds Complex since the 2016 annual inspection. The geometry of the impoundment has remained essentially unchanged. 4.3 CHANGES THAT EFFECT STABILITY OR OPERATION (257.83(b)(2)(vii)) Based on interviews with plant personnel and field observations there were no changes to the CCR Ponds Complex since the last annual inspection that would affect the stability or operation of the impounding structure. 4.4 IMPOUNDMENT CHARACTERISTICS (257.83(b)(2)(iii, iv, v)) Table 2 is a summary of the minimum, maximum, and present depth and elevation of the impounded water since the previous annual inspection; the storage capacity of the impounding structure at the time of the inspection; and the approximate volume of the impounded water at the time of the inspection. Table 1 Summary of Relevant Storage Information CCR Ponds Complex IMPOUNDMENT CHARACTERISTICS- CCR Pond Complex Pond 6 Pond 21 Pond 22 Pond 23 WWSP Approximate Minimum depth of impounded water since last annual 15ft 18ft 14ft 14ft 10ft inspection (1200) (1208) (1204) (1208) (1200) Approximate Maximum depth of impounded water since last annual 28ft 23ft 23ft 23ft 23ft inspection (1213) (1213) (1213) (1213) (1213) Approximate Present depth of impounded water at the time of the 28ft 23ft 23ft 23ft 23ft inspection (1213) (1213) (1213) (1213) (1213) Approximate Minimum depth of CCR since last annual inspection 23ft 22ft 21ft 25ft 22ft (1208) (1212) (1211) (1215) (1212) Approximate Maximum depth of CCR since last annual inspection 29ft 22ft 22ft 26ft 24ft (1214) (1212) (1212) (1216) (1214) Approximate Present depth of CCR at 29ft 22ft 22ft 26ft 24ft the time of the inspection (1214) (1212) (1212) (1216) (1214) Storage Capacity of impounding structure at the time of the inspection 1100acre-ft 125acre-ft 125acre-ft 250 acre-ft 400 acre-ft Approximate volume of impounded water at the time of the inspection 220 acre-ft 65acre-ft 55acre-ft 120 acre-ft 80 acre-ft Approximate volume of CCR at the time of the inspection 880 acre-ft 45acre-ft 55acre-ft 125 acre-ft 320 acre-ft Page 4 of 8


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    Annual Dam and Dike Inspection Report (2017) November 1st, 2017 Oklaunion Power Station CCR Ponds Complex 4.5 VISUAL INSPECTION (257.83(b)(2)(i)) A visual inspection of the CCR Ponds Complex was conducted to identify any signs of distress or malfunction of the impoundment and appurtenant structures. Specific items inspected included all structural elements of the dam such as upstream and downstream slopes, crest, and toe. POND 6 - WASTEWATER POND Pond #6 is located at the south-central edge of the main evaporation pond complex area. In 2015, Pond 6 dam embankment was raised to provide additional ash storage capacity. The crest elevation was raised from Elevation 1208 to Elevation 1215 feet. The crest of the embankment appeared to be in good condition with no unusual cracking, rutting, settlement, deformation, or misalignment. (Observation 1, Photos 1-4) The exterior slopes of the south and west dikes were in overall good condition (Observation 2, Photos #1- 2). No signs of slope failure, slumping, or seepage were observed on the downstream slopes and no burrowing animal activity was noted. The slopes were adequately vegetated and no erosional features were noted. All slopes were free of woody vegetation. The eastern slope of Pond #6 is also the western slope of the Pond #7 spillway discharge channel. The channel was in fair condition. The spillway of the adjacent Pond #7 has been substantially blocked and no discharge can occur. However, the discharge channel below, shown in Observation 2, Photo #3 and #4, also receives runoff from the surrounding area and should be monitored for erosion as part of the periodic visual inspections. POND 21 The slopes of Pond 21 are in good condition. Pond 21 is an incised 5.1 acre bottom ash pond. The only visible dike portions are 3-5 ft above the normal pool levels. During the inspection there was some erosion damage was noticed on the interior slope of the Makeup Water Pond which is the exterior slope of Pond 21, see Observation 3, Photo #4. The plant will continue to monitor the exterior slope until the repair is performed. Overall, Pond 21 appeared in good, stable and functional condition and there were no visual observations to indicate any structural deficiencies that would impact the integrity of the dikes. Observation 3 and 4 Photos #1-4 provide views of various components of the Pond 21 from the 2017 inspection. The geometry of the dike has not changed or altered since the last inspection. POND 22 The slopes of Pond 22 are in good condition. Pond 22 is an incised 5.1 acre pond originally designed for storing bottom ash. The only visible dike portions of the pond are 3-5 ft above the normal pool levels. Based on the inspection there were no visual observations to indicate any structural deficiencies that would impact the integrity of the dikes. Observation 5, Photos #1-4 provide views of various components of the Pond 22 from the 2017 inspection. POND 23 The slopes of Pond 23 are in good condition. Pond 23 is an incised 13.3 acre pond originally designed to contain fly ash. The only visible dike portions of the pond are 3-5ft above the normal pool levels. Based on the inspection there were no visual observations to indicate any structural deficiencies that would impact the integrity of the dikes. Observation 6, Photos #1-4 provide views of various components of the Pond 23 from the 2017 inspection. Page 5 of 8


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    Annual Dam and Dike Inspection Report (2017) November 1st, 2017 Oklaunion Power Station CCR Ponds Complex WASTE WATER SLUDGE POND The slopes of the Waste Water and Sludge Pond (WWSP) are in good condition. WWSP is an incised 22.6 acre pond. The only visible dike portions are 3-5 ft above the normal pool levels. Based on the inspection there were no visual observations to indicate any structural deficiencies that would impact the integrity of the dikes. Observation 7, Photos #1-4 provide views of various components of the Pond WWSP from the 2017 inspection. Overall the facility is in good condition. The impoundment is functioning as intended with no signs of potential structural weakness or conditions which are disrupting to the safe operation of the impoundment. 4.6 INSTRUMENTATION (257.83(b)(2)(ii)) Onsite instrumentations include open pipe type piezometers. PIEZOMETERS The location of the instrumentation is shown on Figure 3. The results of the measurements of various piezometers are shown in Figure 4 and 5. The maximum recorded readings of each instrument since the previous annual inspection is shown in Table 2. Table 2 CCR Ponds Maximum recorded instruments reading since the previous annual inspection INSTRUMENTATION DATA CCR Ponds Complex Maximum Reading since last Date Instrument Type annual inspection of Reading B-1 Piezometer 1179.97 4/20/2017 B-3 Piezometer 1213.93 6/15/2017 B-4 Piezometer 1204.77 10/4/2017 B-5 Piezometer 1203.41 11/1/2017 B-6 Piezometer 1188.62 2/23/2017 B-1502A Piezometer 1179.47 5/18/2017 B-1506A Piezometer 1209.67 6/15/2017 B-1507A Piezometer 1214.75 7/13/2017 B-1508A Piezometer 1215.00 6/15/2017 B-1512 Piezometer 1215.00 5/18/2017 B-1513 Piezometer 1214.00 6/15/2017 Five piezometers (B-1, B-3, B-4, B-5, and B-6) were installed in July 2016 around the Pond 21, 22, 23 and WWSP. Each piezometer was installed at the crest surrounding the ponds. Figure 4 shows the static water levels of those piezometers and ponds pool levels measured during monthly plant inspections beginning in August, 2016. All of the ponds (#21, 22, 23, and WWSP) pool level were found to be consistent at an elevation 1,213 feet. Over periods of monthly measurement data, the static water levels in the piezometers have indicated some fluctuations. The readings of the 4 out of the 5 piezometers indicated higher than pool elevation which may indicate that rain/surface water is entering the pipes. When the readings fall above the pool level, plant maintenance is to contact AEP Civil Engineering Services which will be will be conducting further evaluation. Piezometers (B-1502A, B-1506A, B-1507A, B-1508A, B1512, and B1513) were installed in various locations along the crest of Pond 6 after raising the dikes in 2015. Figure 5 shows the static water levels Page 6 of 8


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    Annual Dam and Dike Inspection Report (2017) November 1st, 2017 Oklaunion Power Station CCR Ponds Complex of those piezometers measured during monthly plant inspections, along with the measured pool levels of Pond 6. All of the piezometers indicated static water levels below the pond pool level (1,213 feet). All piezometers indicated static water levels within expected tolerance except B-1508A. Piezometer B- 1508A indicated about 10-foot increase in the water level since 8/2016. This increase in the static water shall be monitored for continuing evaluation. Page 7 of 8


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    Annual Dam and Dike Inspection Report (2017) November 1st, 2017 Oklaunion Power Station CCR Ponds Complex 5.0 SUMMARY OF FINDINGS Based on the visual observations during the inspection, the dam and appurtenances are generally in good condition. A summary of our recommendations for general maintenance and continued monitoring, as well as any recommendations for remedial activities, is provided as follows: 5.1 MAINTENANCE ITEMS The following maintenance items were identified during the visual inspection:  Drainage along the toe of Pond 6 east exterior dike is considered fair and requires visual inspections of the area to continue with the weekly/monthly inspections.  Vegetation management for the facility is considered good. Grassed areas should continue to be mowed regularly. Any areas that are not accessible to mowing equipment should be controlled by the use of weed trimmers, power brush cutters, or other suitable vegetation control method.  Plant inspection and monitoring procedures, maintenance activities, and reporting with respect to the dikes should be implemented in coordination with AEP Civil Engineering. 5.2 ITEMS TO MONITOR  The exterior slope of Pond 21 (the interior slope of the Make-Up Water Pond) is to be visually inspected periodically. Should further erosion occur the plant will take preventative actions by installing rip rap along the eroded area in order to protect slope.  Piezometer B-1508A shall be monitored monthly for further evaluation due to the increase in water levels since 8/2016.  Piezometers B-1, B-3, B-4, B-5, and B-6 surrounding Ponds 21, 22, 23 and the WWSP shall continue to be monitored monthly and AEP Civil Engineering services to be immediately notified should the piezometer readings shift above pool levels. 5.3 DEFICIENCIES (257.83(b)(2)(vi)) There were no deficiencies or signs of structural weakness or disruptive conditions that were observed at the time of the inspection that would require additional investigation or remedial action. There were no deficiencies noted during any of the quarterly inspections. If any of these conditions occur before the next annual inspection contact AEP Geotechnical Engineering immediately. If you have any questions with regard to this report, please contact Mohammad Ajlouni at Audinet: 200- 2939 or Gary Zych at Audinet: 200-2917. Page 8 of 8


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    Annual Dam and Dike Inspection Report (2017) November 1st, 2017 Oklaunion Power Station CCR Ponds Complex Figures


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    ©2010 Google – Map data ©2010 Google AEP OKLAUNION POWER PLANT WILBARGER COUNTY, TX FIGURE 1. PLANT INSPECTION VICINITY MAP DATE: 2/17/2012


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    FIGURE 2. CCR Pond Complex General Layout


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    * * * * * (OW) B-1 B-15-06 * PIEZOMETER (PIEZOMETER) & SLUDGE POND WASTEWATER (WW) TERRACON 2015 SOIL BORING TERRACON 2016 SOIL BORING INDICATES BORING COMPLETED AS GROUNDWATER OBSERVATION WELL (OW) - DENOTES BORING COMPLETED AS LEGEND 250 CPT-15-09 20408 0 SCALE IN FEET 125 CONTROL POINT 250 PENETROMETER TEST TERRACON 2016 CONE N REV. DATE BY DESCRIPTION BORING LOCATION PLAN Figure 3A DESIGNED BY: MAE OKLAUNION PONDS AREA DIKES DRAWN BY: DAB APPVD. BY: KME AMERICAN ELECTRIC POWER SCALE: 1"=250' Consulting Engineers and Scientists DATE: 8/29/16 OKLAUNION POWER STATION JOB NO. N4165227 800 MORRISON ROAD COLUMBUS, OHIO 43230 ACAD NO. 816boring1 PH. (614) 863-3113 FAX. (614) 863-0475 12567 FM ROAD 3430 VERNON TEXAS SHEET NO.: 1 OF 1


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    1 sb-tpplansb2 FIGURE 3B N4155108 OF 1"=250' 4/4/16 N KME DAB AKB 1 DESIGNED BY: 250 0 125 250 DRAWN BY: SHEET NO.: APPVD. BY: ACAD NO. JOB NO. SCALE: DATE: SCALE IN FEET TEXAS CENTERLINE OF 1987 A AMERICAN ELECTRIC POWER DAM RAISING-EVAPORATION POND NO. 6 AS-BUILT BERM OLKAUNION POWER STATION EXPLORATION PLAN 12567 FM ROAD 3430 LIMIT OF CRAFTON TULL SURVEY DATED: 7/16/2015 VERNON EVAPORATION POND NO. 6 FAX. (614) 863-0475 COLUMBUS, OHIO 43230 Consulting Engineers and Scientists APPROXIMATE EASTERN EXTENT OF SOUTH EMBANKMENT CLAY TOE KEY N M J 800 MORRISON ROAD PH. (614) 863-3113 LEGEND B-15-04 (OW) TERRACON 2015 SOIL BORING NOTES: (OW) - DENOTES BORING COMPLETED AS APPROXIMATE WESTERN 1. THE EXISTING TOPOGRAPHY ON THE INSIDE OF GROUNDWATER OBSERVATION WELL EXTENT OF SOUTH DESCRIPTION THE PERIMETER OF POND NO. 6 IS DATED: MW-3/AD-14 EXISTING MONITORING WELL EMBANKMENT CLAY TOE KEY 3/16/15, FROM SHEPPARD SURVEYING CO., INC. TP-15-01 2. THE EXISTING TOPOGRAPHY ON THE TOP AND APPROXIMATE TEST PIT LOCATION OUTSIDE PERIMETER OF THE POND IS FROM A CPT-15-01 SURVEY DATED: 7/16/15, FROM CRAFTON TULL. CPT LOCATION BY 3. SOIL BORING AND TEST PIT LOCATION/ 20408 CONTROL POINT REV. DATE ELEVATION DATA FROM CRAFTON TULL SURVEY DATED: 7/16/2015 SLOPE STABILTY ANALYIS CROSS A SECTIONS


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    1215.00 1213.00 B‐1 B‐3 B‐4 1211.00 B‐5 Eleveation (ft.) B‐6 Pool Level 1209.00 1207.00 1205.00 7/29/2016 9/17/2016 11/6/2016 12/26/2016 2/14/2017 4/5/2017 5/25/2017 7/14/2017 9/2/2017 10/22/2017 12/11/2017 Date FIGURE 4. CCR Ponds Piezometer Data Pond 21, Pond 22, Pond 23 and WWSP


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    1215.00 1210.00 1205.00 Pool Level B‐1502A 1200.00 B‐1506A Eleveation (ft.) 1195.00 B‐1507A 1190.00 B‐1508A 1185.00 B‐1512 1180.00 B‐1513 1175.00 1170.00 1/31/2016 5/10/2016 8/18/2016 11/26/2016 3/6/2017 6/14/2017 9/22/2017 12/31/2017 Date FIGURE 5. Pond 6 Piezometer Data


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    Annual Dam and Dike Inspection Report (2017) November 1st, 2017 Oklaunion Power Station CCR Ponds Complex ATTACHMENT A: Photographs – CCR Ponds Complex


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    AEP GES Dam and Dike Inspection Plant Name: Oklaunion Observation #: 1 Unit: Pond 6 November 1, 2017 Photo #1 Description: Crest Notes: Typical Crest in Good Condition. Location: West Dike Photo #2 Description: Crest Notes: Typical Crest in Good Condition. Location: North Dike. Between Pond 6 and Make-Up Water Pond


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    AEP GES Dam and Dike Inspection Photo #3 Description: Crest Notes: Typical Crest in Good Condition. Location: South Dike Photo #4 Description: Interior Slope Notes: Typical Interior Slope in Good Condition. Location: Pond 6 Raised Dike


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    AEP GES Dam and Dike Inspection Plant Name: Oklaunion Observation #: 2 Unit: Pond 6 November 1, 2017 Photo #1 Description: Exterior Slope Notes: West Exterior Slope in Good Condition. Location: West Exterior Slope Photo #2 Description: Exterior Slope Notes: Typical South Exterior Slope in Good Condition Location: South Exterior Slope.


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    AEP GES Dam and Dike Inspection Photo #3 Description: Exterior Slope Notes: East Exterior Slope in Fair Condition. Note that the channel receives run off from surrounding area. Plant to Monitor Location: Pond 6 East Exterior Slope Photo #4 Description: Exterior Slope Notes: Typical Exterior Slope and Retaining wall in Good Condition Location: Exterior Slope after 2015 Dike Raising


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    AEP GES Dam and Dike Inspection Plant Name: Oklaunion Observation #: 3 Unit: Pond 21 November 1, 2017 Photo #1 Description: Interior Slope Notes: Interior Slopes in Good Condition Location: South of Pond 21. Looking North. Photo #2 Description: Interior Slope Notes: Interior Slope in Good Condition Location: Interior Slope of Pond 21. Looking West


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    AEP GES Dam and Dike Inspection Photo #3 Description: Interior Slope Notes: Pond 21Exterior Slope and Interior Slope of Makeup Water Pond Location: Makeup Water Interior Slope Looking West. Photo #4 Description: Exterior Slope Notes: Damage on the Makeup Water Pond Slope. Plant to install rip rap to prevent future Slope failure. Location: Pond 21 Exterior Slope


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    AEP GES Dam and Dike Inspection Plant Name: Oklaunion Observation #: 4 Unit: Pond 21 November 1, 2017 Photo #1 Description: Crest Notes: Crest in Good Condition Location: Dike between Pond 21 and Pond 22. Looking South Photo #2 Description: Crest Notes: Crest in Good Condition Location: Between Pond 21 and Makeup Water Pond. Looking South.


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    AEP GES Dam and Dike Inspection Photo #3 Description: Other Notes: Discharge Pipe Location: East Slope of Pond 21 Photo #4 Description: Other Notes: Bottom Ash Sluice Discharge Pipe Location: South Side of Pond 21


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    AEP GES Dam and Dike Inspection Plant Name: Oklaunion Observation #: 5 Unit: Pond 22 November 1, 2017 Photo #1 Description: Interior Slope Notes: Typical Interior Slope in Good Condition. Location: North Side of Pond 22 Photo #2 Description: Crest Notes: Typical Crest in Good Condition Location: Dike between Pond 22 and Pond 23.


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    AEP GES Dam and Dike Inspection Photo #3 Description: Interior Slope Notes: Typical Interior Slope in Good Condition Location: West Interior Slope Photo #4 Description: Other Notes: Discharge Pipe Location: South End of Pond


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    AEP GES Dam and Dike Inspection Plant Name: Oklaunion Observation #: 6 Unit: Pond 23 November 1, 2017 Photo #1 Description: Interior Slope Notes: Interior Slope in Good Condition Location: South Side Interior Slope Photo #2 Description: Interior Slope Notes: Interior Slope in Good Condition Location: East Interior Slope. Looking North


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    AEP GES Dam and Dike Inspection Photo #3 Description: Interior Slope Notes: Interior Slope in Good Condition Location: West Interior Slope. Looking North Photo #4 Description: Crest Notes: Typical Crest in Good Condition Location: Dike between Pond 23 and WWSP


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    AEP GES Dam and Dike Inspection Plant Name: Oklaunion Observation #: 7 Unit: WWSP November 1, 2017 Photo #1 Description: Interior Slope Notes: Interior Slope in Good Condition Location: South Interior Slope Photo #2 Description: Interior Slope Notes: Interior Slope in Good Condition Location: West Interior Slope Looking South.


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    AEP GES Dam and Dike Inspection Photo #3 Description: Interior Slope Notes: Interior Slope in Good Condition Location: North Interior Slope. Looking East Photo #4 Description: Crest Notes: Typical Crest in Good Condition Location: Dike between WWSP and Pond 7


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