EMERGENCY ACTION PLAN W.H. Sammis Coal Plant North and South Ponds Stratton, Ohio

Transcription

1 Prepared for: FirstEnergy Generation, LLC 76 South Main St Akron, OH EMERGENCY ACTION PLAN W.H. Sammis Coal Plant North and South Ponds Stratton, Ohio Prepared by: Wincopin Circle, Floor 4 Columbia, Maryland April 2017

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3 W.H. Sammis Coal Plant North and South Ponds TABLE OF CONTENTS 1. INTRODUCTION Purpose Site Location Impoundment Description EAP Revisions PREPAREDNESS AND COORDINATION Inundation Mapping Jefferson County Emergency Management Agency Coordination REFERENCES...2 LIST OF FIGURES Figure 1 Site Location Map: North and South Ponds Figure 2 Site Plan: North and South Ponds Figure 3 Initial Hazard Classification, Inundation Map Single Pond Failure Figure 4 Initial Hazard Classification, Inundation Map Simultaneous Multiple-Pond Failure LIST OF ATTACHMENTS Attachment A Emergency Action Plan - Revision Log and Annual Meeting Attendance List Attachment B North Pond Emergency Action Plan Attachment C South Pond Emergency Action Plan ME1292/ (a)(3) EAP i April 2017

4 W.H. Sammis Coal Plant North and South Ponds 1. Introduction 1.1 Purpose Geosyntec Consultants (Geosyntec) has prepared this Emergency Action Plan for FirstEnergy Generation, LLC (FirstEnergy) for the existing W.H. Sammis Coal Plant North and South Ponds (North and South Ponds) in Stratton, Ohio. This plan is prepared for compliance with the Federal Coal Combustion Residuals (CCR) Rule, 40 CFR Part 257. This Regulation is referred to herein as the CCR Rule. In this report, the requirements of (a)(3), pertaining to preparation of emergency action plan (EAP) for existing CCR surface impoundments are addressed. 1.2 Site Location The North and South Ponds are located at the W.H. Sammis Plant (Plant) in Stratton, Jefferson County, Ohio. The Plant can be found on the United States Geological Survey (USGS) 7.5-minute topographic map for the Wellsville, Ohio Quadrangle (Figure 1). The Plant is located adjacent to Ohio State Route 7 and the Ohio River. The North and South Ponds are located in the southeast quadrant of the generating facility. 1.3 Impoundment Description The North and South Ponds were initially constructed in 1959, modified in 1971, and modified into the current configuration in Further, the North Pond outlet works and northern embankment were reconstructed in The ponds are used for temporary storage of bottom ash (i.e., CCR) and treatment of wastewater produced by plant operations. A site plan identifying the primary features of the North and South Ponds is presented on Figure 2. The North Pond is regulated by the Ohio Department of Natural Resources (ODNR) Dam Safety Program as a Class II Dam, File No The South Pond is not regulated by the ODNR. Both the North and South Ponds are classified as Significant Hazard Potential impoundments in accordance with (a)(2) of the CCR Rule. This hazard potential classification, as evaluated in the report Initial Hazard Classification, W.H. Sammis Coal Plant North and South Ponds, Stratton, Ohio (Geosyntec 2016), is interpreted to mean that failure or mis-operation of the ponds will cause no probable loss of human life, but may result in potential environmental damage to the Ohio River, may result in damage to the Stratton Water Treatment Plant, and may cause minor loss or disruption of economic activity on State Route 7. The North and South ponds discharge to the Ohio River under an Ohio Environmental Protection Agency (OEPA) National Pollutant Discharge Elimination System (NPDES) permit, Permit No. OH EAP Revisions The CCR Rule allows for amendment of the EAP at any time in response to routine inspection findings, changes in the site conditions, or in response to quinquennial (i.e., 5-year) review as ME1292/ (a)(3) EAP 1 April 2017

5 W.H. Sammis Coal Plant North and South Ponds required by (a)(3) of the CCR Rule. A log of the North and South Pond EAP revisions is provided in Attachment A. 2. PREPAREDNESS AND COORDINATION 2.1 Inundation Mapping Geosyntec (2016) presents an analysis documenting the potential inundation area downstream of the North and South Ponds. The results are illustrated on two figures delineating expected area of inundation in the event of failure of the North Pond or South Pond eastern embankment. The first figure, reproduced here as Figure 3, presents the inundation area associated with singular failure of either the North Pond or South Pond embankment. The second figure, reproduced here as Figure 4, presents the inundation area associated with the conservative assumption that a simultaneous failure of both the North and South Pond embankments occurs. 2.2 Jefferson County Emergency Management Agency Coordination In conjunction with the annual EAP review, described in Appendix A of the North Pond and South Pond EAP, FirstEnergy will annually contact the Jefferson County Emergency Management Agency (EMA) and offer the opportunity to conduct a face-to-face meeting for review of the EAP. Each year s coordination effort will be documented on the EAP Revision Log and Annual Meeting Attendance List (Attachment A). 3. REFERENCES Geosyntec (2016). Initial Hazard Potential Classification, W.H. Sammis Power Plant North and South Ponds, Stratton, Ohio. Geosyntec Consultants, Inc. 17 October ME1292/ (a)(3) EAP 2 April 2017

6 W.H. Sammis Coal Plant North and South Ponds FIGURES

7 W.H. Sammis Coal Plant North and South Ponds ³ North and South Ponds P:\GIS\Sammis Power Station - ME1292\Report 1\Figure 1 - Site Location Map N&S Ponds.mxd; RDW/MS; 13-Oct-2016 Notes: Topographinc map provided by U.S Geological Survey on 13 October East Liverpool South, West Virginia (1985), and Wellsvill, Ohio (1986) 2,000 1, ,000 Feet Site Location Map: North and South Ponds Sammis Power Station Stratton, Ohio Columbia, Maryland October 2016 Figure 1 ME1292/ (a)(3) EAP

8 W.H. Sammis Coal Plant North and South Ponds ³ 48-in RCP 3 Discharge at Headwall 24-in HDPE 30-in HDPE Outlet Riser and Valve Vault Primary Outlet Ohio Route 7 24-in RCP with HDPE Liner Outlet Riser and Valve Vault Primary Outlet 48-in HDPE Overflow Outlet 12" HDPE Overflow Outlet 48" HDPE North Pond South Pond 3 48" RCP with HDPE Liner P:\GIS\Sammis Power Station - ME1292\Report 1\Figure 2 - Site Plan N&S Ponds.mxd; MS/RDW; 13-Oct ME1292/ (a)(3) EAP Legend 3 Manhole 24 inch pipe 30 inch pipe 48 inch pipe Notes: RCP - Reinforced Concrete Pipe HDPE - High-Density Polyethylene 1. Aerial imagery accessed via ArcGIS Online and provided by the United Stated Department of Agriculture on 13 October Image is dated 24 October All pipe and structure locations are approximate Feet Site Plan: North and South Ponds Sammis Power Station Stratton, Ohio Columbia, Maryland October 2016 Figure 2

9 W.H. Sammis Coal Plant North and South Ponds ³ Roadway Flooding Probable Maximum Flood Event: Peak Depth = 1.1 ft Average Velocity = 2.8 ft/sec Highway Barrier Ohio Route 7 North Pond South Pond P:\GIS\Sammis Power Station - ME1292\Report 1\Figure 5 - flood_boundaries_single.mxd; MS/RDW; 13-Oct-2016 Legend Storm Drain Inlet Flow Direction Inundation (Sunny Day Failure, Peak Elevation = ft msl) Inundation (Probable Maximum Flood Failure, Peak Elevation = ft msl) Assumed Breach Locations Pond Embankment Notes: Aerial imagery accessed via ArcGIS Online and provided by the United Stated Department of Agriculture on 13 October Image is dated 24 October Feet Initial Hazard Classification, Inundation Map - Single Pond Failure Sammis Power Station Stratton, Ohio Columbia, Maryland October 2016 Figure 3 ME1292/ (a)(3) EAP

10 W.H. Sammis Coal Plant North and South Ponds ³ Roadway Flooding Sunny Day Scenario: Peak Depth = 1.4 ft Average Velocity = 3.2 ft/sec Highway Barrier Ohio Route 7 North Pond South Pond P:\GIS\Sammis Power Station - ME1292\Report 1\Figure 6 - flood_boundaries_multiple.mxd; MS/RDW; 13-Oct-2016 Legend Storm Drain Inlet Flow Direction Inundation (Sunny Day Failure, Peak Elevation = ft msl) Inundation (Probably Maximum Flood Failure, Peak Elevation = ft msl) Assumed Breach Locations Pond Embankment Notes: Aerial imagery accessed via ArcGIS Online and provided by the United Stated Department of Agriculture on 13 October Image is dated 24 October Feet Initial Hazard Classification, Inundation Map - Simultaneous Multi-Pond Failure Sammis Power Station Stratton, Ohio Columbia, Maryland October 2016 Figure 4 ME1292/ (a)(3) EAP

11 W.H. Sammis Coal Plant North and South Ponds ATTACHMENT A Emergency Action Plan Revision Log and Annual Meeting Attendance List

12 W.H. Sammis Coal Plant North and South Ponds EMERGENCY ACTION PLAN - REVISION LOG W.H. Sammis Coal Plant North and South Ponds Revision Date: Revision By: Distribution: FirstEnergy, Dam Owner: ODNR: Jefferson County EMA: Description: Revision Date: Revision By: Distribution: FirstEnergy, Dam Owner: ODNR: Jefferson County EMA: Description: ME1292/ (a)(3) EAP Page

13 W.H. Sammis Coal Plant North and South Ponds EMERGENCY ACTION PLAN ANNUAL MEETING ATTENDANCE LIST W.H. Sammis Coal Plant North and South Ponds Facility: Date: Location: ATTENDEES Name (Print): Signature: Affiliation: Phone: Name (Print): Signature: Affiliation: Phone: Name (Print): Signature: Affiliation: Phone: ME1292/ (a)(3) EAP Page

14 W.H. Sammis Coal Plant North and South Ponds ATTACHMENT B North Pond Emergency Action Plan

15 EMERGENCY ACTION PLAN FOR Sammis Station North Bottom Ash Dam JEFFERSON COUNTY VILLAGE OF STRATTON ODNR, DSWR FILE NUMBER: CLASS II STRUCTURE DAM OWNER FIRSTENERGY GENERATION, LLC CREATED 4/17/2017

16 W.H. Sammis Coal Plant North Pond Table of Contents I. Notification Flowchart II. Purpose III. Project Description and Downstream Hazard IV. Emergency Detection, Evaluation, and Classification V. Responsibilities VI. Preparedness VII. Downstream Hazard Map VIII. Appendices Appendix A: Plans for Training, Exercising, and Updating Appendix B: Distribution of the EAP Appendix C: Glossary of Terms Appendix D: Drawings ME1292/App A North Pond EAP A-i April 2017

17 W.H. Sammis Coal Plant North Pond I. Notification Flowchart Dam Owner Representative #1 Name: Eric Akenhead Phone number: Cell phone number: Dam Owner Representative #2 Name: Richard Mezan Phone number: Cell phone number: The dam owner representatives will determine the alert level at the dam according to Section IV of this EAP and notify 911, ODNR, and the owner s engineer. For a Watch Alert Level, notify the parties below that there is a potential dam failure situation developing. For a Warning Alert Level, notify the parties below that a dam failure is in progress or is imminent. Evacuations and/or road closures are needed. Jefferson County Emergency Management Agency: Emergency Center: New Cumberland Lock& Dam Toronto Water Filtration Plant Through the emergency dispatch system, the following entities should be contacted: Fire Department Police Department National Weather Service Fred McMullen ODOT, District ODNR, Dam Safety Engineering Program 24 hour emergency #: Owner Engineer Ken Bartlett Phone: Cell: ME1292/App A North Pond EAP Page 1 April 2017

18 W.H. Sammis Coal Plant North Pond II. Purpose The purpose of an Emergency Action Plan (EAP) is to provide the owner/operator of a dam with a clear plan of action when any dam emergency arises. An emergency is identified as any condition which: develops unexpectedly; endangers the structural integrity of the dam; and could result in the dam's failure producing downstream flooding, requiring immediate action. The EAP provides a description of the dam and the area at risk as well as contact information for all parties involved in responding to or affected by an emergency at the dam. The EAP outlines what actions are required in the event of an emergency. By creating and implementing an EAP the owner/operator of a dam can reduce the risk of human life loss or injury, minimize property damage during an unusual or emergency event and potentially lessen their liability. III. Description of Project and Downstream Hazard The North pond was upgraded in 2016 to include the installation of an ungated overflow device and replacement of the storm drain within the northern embankment of the pond, and installation of an overflow weir plate within the outlet riser. These upgrades were performed in accordance with previously submitted design drawing set titled, Stormwater and North Pond Discharge Pipe Replacement, W.H. Sammis Coal Plant, Stratton, Ohio, dated 24 May 2016 and approved by Ohio Department of Natural Resources (ODNR), Division of Water Resources on 8 June The upgrades and As-Built conditions are documented in the Construction Completion Report dated October 2016, Additionally, a reduction of the required pond freeboard from 5 feet to 3 feet was approved by ODNR in a letter dated 6 May Water and bottom ash pipes enter the southeast side of the Sammis Station North Bottom Ash Pond Dam and discharge water/bottom ash into the Pond. Bottom ash settles out as the water flows around a center dike and into a discharge structure/spillway in the northeast corner of the pond. The water flows over a weir plate in the structure. It exits at the base of the structure/spillway through a buried 24 HDPE pond discharge pipe which passes through a discharge shutoff valve. Water then flows through the 24 HDPE pond discharge pipe and ties into the 48 storm drain within the northern embankment of the pond. The storm water line discharges at Plant NPDES Outfall 009. Water at the Outfall then passes through a culvert under State Route 7 and discharges to the Ohio River just upstream of the New Cumberland Lock and Dam. A Site location map and Site plan are presented as Figures 1 and 2, respectively. The ODNR Dam inventory sheet and an aerial view of the dam are provided. Note, the ODNR inventory sheet is outdated and does not reflect current site information. Current information as of April 2017 is as follows: contact for the dam owner is currently Randy Cain. His phone number is (724) The type of structure is earth embankment. The lake drain is a weir plate rather than a stoplog. ME1292/App A North Pond EAP Page 2 April 2017

19 W.H. Sammis Coal Plant North Pond Downstream Impacts and Notifications In the event of a failure of the east dam embankment of the north pond, water would be expected to flow north along the ditch bordering southbound State Route 7 and through the existing storm drain inlets to the Ohio River. It is likely that portions of Route 7 and the New Cumberland Lock and Dam property would be inundated by water following a single dam failure. Water would also flow north and south along the ditch bordering east side of State Route 7 In the event of a failure of the south dam embankment of the north pond, water would be expected to inundate the out of service South pond which is larger than the north pond and would be able to hold the contents of the north pond. In the event of a simultaneous failure of the east dam embankments of the north and south ponds, water would likely inundate higher elevations of Route 7 within approximately the same areas of Route 7 as expected from a single dam failure. No serious downstream impacts are expected from a failure of the embankment(s); however, the following notifications (also see Section I) would be made: Jefferson County Emergency Management Agency would be notified. The New Cumberland Lock and Dam would be notified. The Toronto Water Filtration Plant would be notified since the Plant has a River intake approximately 5 miles downstream from Sammis Plant. The flooding of any property would not be life threatening or cause major damage. Detailed analysis of potent downstream flooding impacts is presented in the report, Initial Hazard Potential Classification, W.H. Sammis Coal Plant North and South Ponds, Stratton, Ohio (Geosyntec 2016). ME1292/App A North Pond EAP Page 3 April 2017

20 W.H. Sammis Coal Plant North Pond ³ North and South Ponds P:\GIS\Sammis Power Station - ME1292\Report 1\Figure 1 - Site Location Map N&S Ponds.mxd; RDW/MS; 13-Oct-2016 Notes: Topographinc map provided by U.S Geological Survey on 13 October East Liverpool South, West Virginia (1985), and Wellsvill, Ohio (1986) 2,000 1, ,000 Feet Site Location Map: North and South Ponds Sammis Power Station Stratton, Ohio Columbia, Maryland October 2016 Figure 1 ME1292/App A North Pond EAP Page 4

21 W.H. Sammis Coal Plant North Pond ³ 48-in RCP 3 Discharge at Headwall 24-in HDPE 30-in HDPE Outlet Riser and Valve Vault Primary Outlet Ohio Route 7 24-in RCP with HDPE Liner Outlet Riser and Valve Vault Primary Outlet 48-in HDPE Overflow Outlet 12" HDPE Overflow Outlet 48" HDPE North Pond South Pond 3 48" RCP with HDPE Liner P:\GIS\Sammis Power Station - ME1292\Report 1\Figure 2 - Site Plan N&S Ponds.mxd; MS/RDW; 13-Oct Legend 3 Manhole 24 inch pipe 30 inch pipe 48 inch pipe Notes: RCP - Reinforced Concrete Pipe HDPE - High-Density Polyethylene 1. Aerial imagery accessed via ArcGIS Online and provided by the United Stated Department of Agriculture on 13 October Image is dated 24 October All pipe and structure locations are approximate Feet Site Plan: North and South Ponds Sammis Power Station Stratton, Ohio Columbia, Maryland October 2016 Figure 2 ME1292/App A North Pond EAP Page 5

22 W.H. Sammis Coal Plant North Pond Dam Inventory Sheet Name: SAMMIS STATION NORTH BOTIOM ASH POND DAM File No: National#: Reservoir: Permit No.: Class (Ht-Vol): 11 Owner Information Owner: FirstEnergy Owner Type: Utility (IV-IV) Address: Environmental Department Multi-Dams: Yes: 2, Class 1:0 c/o Michael Horvath 76 S. Main Street Parcel No.: City: Akron State: OH Zip: Contact:. Mike Horvath Phone No.: Location lnformation County: Jefferson Latitude Deg.: 40 IVlin.: 31 Sec.: 40 Towns'hip: Saline Longitude Deg.: 80 Min.: 37 Sec.: 51 Stream Tributary To Ohio River Nearest Affl3cted Community: Stratton Community's Distance from Dam (miles): 0 USGS Quad.: Weflsville, Ohio - W. Va. USGS Basin No.: Design/Construction Information Designed By: Constructed By: Completed: Plan Available: At: F ailurellncident/breach: Structure Information Purpose: Waste Retention Type of Impound.: Upground Type of Structure: Earthfill Drainage Arep. (sq. miles): 0.01 Embankme'nt Data Length (ft}: 900 Height (ft): 13 Top Width (ft): 50 Spillway Outlet Works Data La.ke Drain: STOPLOGS or (acres):.3 Upstream Slope: 2H:1V Downstream Slope: 2H:1V Volume of Fill (cub. yds.): Principal: CONCRETE TOWER WITH STOPLOGS AND APPROX 2-FT CONCR PIPE (WITH VALVE Em~rgency: Maximum Spillway Discharge (cfs) Design Flood: 0.50 Flood Capacity 0.50 Dam Reservoir Data Top of Dam: Emergency Spillway: Principal Spillway: Streambed: Foundation: Elevation (ft-msl)" Area (acres) Storage (acre-feet) 39 'Elevations are not necessarily related to a USGS benchmark Inspection lnformation Inspection History: 11/17/2009 KRB Phase I: Other Visits: Next Planned Inspection: B - by Basin Operation Information/Remarks Emergency /\ct.ion Plan: No Form<lt: OMJ : Annual Fee: $ Last Entry: 1/16/2010 ME1292/App A North Pond EAP Page 6

23 W.H. Sammis Coal Plant North Pond FACILITY MAP ME1292/App A North Pond EAP Page 7

24 W.H. Sammis Coal Plant North Pond IV. Emergency Detection, Evaluation, and Classification In order to determine whether an emergency condition exists, the dam must be inspected or monitored periodically. Inspect the dam as described below. Then, use the Alert Level table to determine the severity of problems identified from inspecting the dam and the Classification of Conditions table to determine the appropriate actions to take. 1. Inspect the dam weekly. This inspection includes walking the entire length of the crest and inspecting the following items: The spillway inlet for obstructions The earthen embankment for cracks, earth slides, seepage, and sinkholes The weir plate, spillway/discharge structure and valve box structure. The discharge valve. Water flow along the ditch beside Route 7 for increased volume. 2. After significant rainfall, dams are more likely to develop problems such as slides, spillway obstructions, seepage, or structural problems. If more than 2 inches of rain occurs within 24 hours or the pool level rises more than one foot, monitor the dam daily until the pool level begins to decrease. Inspect the dam as described in item 1 above. Record rainfall amount and pool elevation. This information can be used to establish how the dam responds to rainfall. It may be found that there is a correlation between pond level and seepage, which would need to be monitored and addressed. The following references may be used for additional assistance for conducting inspections, understanding specific problems with dams, and obtaining rainfall data. Dam Safety: An Owner s Guidance Manual (FEMA publication 145) (drawings of dam conditions near the end of the report can be used to identify problems): ftp://ftp.dnr.state.oh.us/water/public/dcb/eap/fema145/ Division of Soil and Water Resources Facts sheets and other publications: Automated Flood Warning System (current rainfall): NOAA rainfall maps: ME1292/App A North Pond EAP Page 8 April 2017

25 W.H. Sammis Coal Plant North Pond Event Rainfall Abutment Overtopping Seepage Dam Cracking Dam Movement Instruments Earthquake Security Threat Sabotage Alert Level Table Situation Significant rainfall resulting in flooding that raises the flow depth more than 1 feet above the normal flow depth. Flooding that is expected to be at the abutment height or above Major flow overtopping or eroding the abutment New seepage areas on the face of the dam or abutment Heavy seepage with active erosion. Muddy flow and/or sand boils. Visible whirlpool in the upstream pool. New cracks in the dam greater than ¼ - inch wide without seepage Cracks in the dam with seepage Movement of the dam or sections of the dam Noticeable movement of a section of the dam that concentrates flow Noticeable movement of a section of the dam with predicted flooding conditions Instrumentation/piezometer readings beyond predetermined values Measurable earthquake felt or reported on or within 50 miles of the dam Earthquake resulting in visible damage to the dam or appurtenances Earthquake resulting in uncontrolled release of water from the dam Verified bomb threat that, if carried out, could result in damage to the dam Detonated bomb that has resulted in damage to the dam or appurtenances Damage to dam or appurtenances with no impacts to the functioning of the dam Damage to dam or appurtenances that has resulted in seepage flow Damage to dam or appurtenances that has resulted in uncontrolled water release Alert Level* Monitor Watch Warning Monitor Warning Monitor Watch Monitor Watch Warning Monitor Monitor Watch Warning Watch Warning Monitor Watch Warning Weir Plate Weir plate leakage that appears to be increasing. Leakage Monitor *See the Classification of Conditions table on the following page for Alert Level description and recommended action. ME1292/App A North Pond EAP Page 9 April 2017

26 W.H. Sammis Coal Plant North Pond Classification of Conditions Table Alert Level Description Action Dam owner representative must inspect the dam. Monitor Unusual event, slowly developing, not an immediate threat to the dam. Document the incident and report findings to your engineer and the ODNR, Dam Safety Engineering Program. Obtain instructions regarding the next course of action from your engineer and/or ODNR. Watch Warning Unsafe situation that may lead to failure of the dam but not an immediate threat. Urgent situation. Failure is occurring or about to occur. Or, areas downstream are flooding due to spillway flow. Evacuation of downstream area necessary. Begin notifications according to Section I: Notification Flowchart in this EAP. Begin constant surveillance of the dam. Begin notifications according to Section I: Notification Flowchart in this EAP. Begin constant surveillance of the dam. ME1292/App A North Pond EAP Page 10 April 2017

27 W.H. Sammis Coal Plant North Pond Examples of Emergency Situations The following are examples of conditions that usually constitute an emergency situation that may occur at the dam. Abutment Overtopping Watch Alert Level Potential dam failure situation; rapidly developing: 1. Significant flooding or increased inlet flow has raised the flow depth almost to the top of the dam abutment. Warning Alert Level Urgent; dam failure appears imminent or is in progress: 1. The flow depth has overtopped the abutment or erosion is occurring around the end of the dam. Seepage and Sinkholes Watch Alert Level Potential dam failure situation; rapidly developing: 1. Cloudy seepage or soil deposits are observed at the downstream toe of the dam or through the face of the dam. 2. Pool level is falling without apparent cause. Warning Alert Level Urgent; dam failure appears imminent or is in progress: 1. Whirlpools or other evidence exists indicating that the pool is draining rapidly through the dam or foundation. 2. Rapidly enlarging sinkhole(s) are forming on the abutments to the extent that failure appears imminent or is in progress. 3. Rapidly increasing flow through crack(s) eroding materials to the extent that failure appears imminent or is in progress. Dam Movement and Cracking Watch Alert Level Potential dam failure situation; rapidly developing: 1. A portion of the dam has moved such that it is visibly noticeable. 2. New development of or significant increase in length, width, or offset of cracks in the dam or abutments. Warning Alert Level Urgent; dam failure appears imminent or is in progress: 1. Movement of a section or sections of the dam in conjunction with predicted flooding. ME1292/App A North Pond EAP Page 11 April 2017

28 W.H. Sammis Coal Plant North Pond V. Responsibilities Dam Owner Performing weekly dam inspections Initiating emergency actions at the dam Terminating emergency actions at the dam County Emergency Management Agencies (EMA) Coordinates or assists local emergency response County Sheriff/Local Police/Fire Department Leads evacuation and road closure efforts ODNR, Dam Safety Engineering Program Provides technical guidance during an emergency Can initiate emergency actions at the dam if the dam owner is not fulfilling their responsibilities Perform periodic dam safety inspections usually no more frequently than every 5 years Dam Owner s Engineer Provides technical guidance Coordinates with ODNR and County EMA for remedial actions ME1292/App A North Pond EAP Page 12 April 2017

29 W.H. Sammis Coal Plant North Pond VI. Preparedness After all the proper notifications have been made according to the Flowchart, the following actions should be taken. If time permits, ODNR and the dam owner s engineer should be contacted for technical consultation. Emergency remedial actions If time permits, the following emergency remedial actions should be considered for Watch conditions. Immediate implementation of these remedial actions may delay, moderate, or prevent the failure of the dam. Several of the listed adverse or unusual conditions may be apparent at the dam at the same time, requiring implementation of several modes of remedial actions. Close monitoring of the dam must be maintained to confirm the success of any remedial action taken at the dam. See Resources Available (Appendix B 1) for sources of equipment and materials to assist with remedial actions. Abutment overtopping 1. If the water level is no longer rising and it is safe to do so, place sandbags in the eroded areas or fill with earth material. Seepage and sinkholes 1. If the entrance to the seepage origination point is observed in the reservoir (possible whirlpool) and is accessible, attempt to reduce the flow by plugging the entrance with readily available materials such as hay bales, bentonite, soil or rockfill, or plastic sheeting. It should be noted that this may be a very dangerous action to take depending on the situation. Do not attempt if it appears too dangerous. 2. Do not plug downstream discharge. Earthquake 1. Immediately conduct a general overall visual inspection of the dam. 2. Determine if there has been any settlement and movement of the dam or abutments to plan for required remedial work. ME1292/App A North Pond EAP Page 13 April 2017

30 W.H. Sammis Coal Plant North Pond Site-Specific Concerns and Resources Availability Environmental Response and Equipment: Weavertown Environmental Group 206 Weavertown Road Canonsburg, PA (800) Clean Harbors Environmental Services 2930 Independence Road Cleveland, OH (800) Sources of sand, gravel, and large stone: Rawson Trucking State Route 152 Toronto, OH Contact information for concrete supply: DW Dickey & Son East Liverpool Contact information for divers: Marion Hill Associates Tom Owczarzak Phone: Cell: Access to Site: From the south: Turn left off State Route 7 onto Stratton Heights Road, then right to the South Gate (Batch Gate) to enter the Plant Site. From the north: Turn right off State Route 7 onto Stratton Heights Road, then right to the South Gate (Batch Gate) to enter the Plant Site. ME1292/App A North Pond EAP Page 14 April 2017

31 W.H. Sammis Coal Plant North Pond VII. Downstream Hazard Map Analysis documenting the anticipated inundation area downstream of the North and South Ponds is presented in the report, Initial Hazard Potential Classification, W.H. Sammis Coal Plant North and South Ponds, Stratton, Ohio (Geosyntec 2016). The output from that report includes two figures which delineate the inundation area that would be affected in the event of failure of the North Pond or South Pond eastern embankment. The first figure, reproduced here as Figure 3, presents the inundation area associated with singular failure of either the North Pond or South Pond embankment. The second figure, reproduced here as Figure 4, presents the inundation area associated with a simultaneous failure of both the North and South Pond embankments. ME1292/App A North Pond EAP Page 15 April 2017

32 W.H. Sammis Coal Plant North Pond ³ Roadway Flooding Probable Maximum Flood Event: Peak Depth = 1.1 ft Average Velocity = 2.8 ft/sec Highway Barrier Ohio Route 7 North Pond South Pond P:\GIS\Sammis Power Station - ME1292\Report 1\Figure 5 - flood_boundaries_single.mxd; MS/RDW; 13-Oct-2016 Legend Storm Drain Inlet Flow Direction Inundation (Sunny Day Failure, Peak Elevation = ft msl) Inundation (Probable Maximum Flood Failure, Peak Elevation = ft msl) Assumed Breach Locations Pond Embankment Notes: Aerial imagery accessed via ArcGIS Online and provided by the United Stated Department of Agriculture on 13 October Image is dated 24 October Feet Initial Hazard Classification, Inundation Map - Single Pond Failure Sammis Power Station Stratton, Ohio Columbia, Maryland October 2016 Figure 3 ME1292/App A North Pond EAP Page 16

33 W.H. Sammis Coal Plant North Pond ³ Roadway Flooding Sunny Day Scenario: Peak Depth = 1.4 ft Average Velocity = 3.2 ft/sec Highway Barrier Ohio Route 7 North Pond South Pond P:\GIS\Sammis Power Station - ME1292\Report 1\Figure 6 - flood_boundaries_multiple.mxd; MS/RDW; 13-Oct-2016 Legend Storm Drain Inlet Flow Direction Inundation (Sunny Day Failure, Peak Elevation = ft msl) Inundation (Probably Maximum Flood Failure, Peak Elevation = ft msl) Assumed Breach Locations Pond Embankment Notes: Aerial imagery accessed via ArcGIS Online and provided by the United Stated Department of Agriculture on 13 October Image is dated 24 October Feet Initial Hazard Classification, Inundation Map - Simultaneous Multi-Pond Failure Sammis Power Station Stratton, Ohio Columbia, Maryland October 2016 Figure 4 ME1292/App A North Pond EAP Page 17

34 W.H. Sammis Coal Plant North Pond VIII. Appendices Appendix A: Plans for Training, Exercising, Updating, and Compliant Dam Discount The purpose of an annual review of the EAP and training for dam owners and operators is to ensure that all contact information listed is accurate and that dam personnel are familiar with the EAP and understand their role in responding to a dam emergency. The annual review of and training for the Sammis Station North Bottom Ash Dam s EAP will occur during the second or third quarter of each year. The dam owner, FirstEnergy Generation, LLC, will be responsible for updating and distributing copies of the EAP. Based on changes identified in the annual review, copies of updated pages will be provided to all holders of the EAP. A copy of the most current EAP will be kept by the following parties. Dam Owner ODNR, Division of Soil and Water Resources County EMA The dam owner/operator should work with local emergency management to determine what opportunities exist to conduct or participate in dam related EAP exercises. ME1292/App A North Pond EAP Page 18 April 2017

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36 W.H. Sammis Coal Plant North Pond Appendix B: Distribution of the EAP This EAP has been distributed to those Individuals listed below. The Distribution list should include: Dam Owner, ODNR Dam Safety, County EMA Office, Person or Consultant Who Prepared EAP, and Others The Date will be completed by ODNR Dam Safety upon approval of the EAP. Copies of the approved EAP will be sent by ODNR Dam Safety to all listed. Future updated copies of the EAP are to be sent by the Dam Owner to all listed. 1. Eric Akenhead, Generation Specialist FirstEnergy Generation, LLC St. Rt. 7, Stratton, OH Name & Title Organization Address Date 2. Richard Mezan, Manager FirstEnergy Generation, LLC St. Rt. 7, Stratton, OH Name & Title Organization Address Date 3. Ken Bartlett, Engineer V FirstEnergy Generation, LLC St. Rt. 7, Stratton, OH Name & Title Organization Address Date 4. Philip Zablocky, Manager FirstEnergy Generation, LLC St. Rt. 7, Stratton, OH Name & Title Organization Address Date 5. Jon Zoppelt, Director FirstEnergy Generation, LLC St. Rt. 7, Stratton, OH Name & Title Organization Address Date 6. ODNR Dam Safety ODNR 2045 Morse Rd. Bldg. B, Columbus, OH Name & Title Organization Address Date 7. Lt. John Parker, Director Jefferson County EMA 300 Airport Rd., Wintersville, OH Name & Title Organization Address Date ME1292/App A North Pond EAP Page 20 April 2017

37 W.H. Sammis Coal Plant North Pond Appendix C: Glossary of Terms Abutment That part of the valleyside against which the dam is constructed. The left and right abutments of dams are defined with the observer looking downstream from the dam. Acre-foot A unit of volumetric measure that would cover 1 acre to a depth of 1 foot. One acrefoot is equal to 43,560 cubic feet or 325,850 gallons. Appurtenant Structures The structures or machinery auxiliary to dams which are built to operate and maintain dams; such as outlet works, spillway, powerhouse, tunnels, etc. Berm A nearly horizontal step (bench) in the upstream or downstream sloping face of the dam. Boil A disruption of the soil surface due to water discharging from below the surface. Eroded soil may be deposited in the form of a ring (miniature volcano) around the disruption. Breach An opening through the dam that allows draining of the reservoir. A controlled breach is an intentionally constructed opening. An uncontrolled breach is an unintended failure of the dam. Conduit A closed channel (round pipe or rectangular box) that conveys water through, around, or under the dam. Control section A usually level segment in the profile of an open channel spillway above which water in the reservoir discharges through the spillway. Crest of Dam The crown of an overflow section of the dam. In the United States, the term "crest of dam" is often used when "top of dam" is intended. To avoid confusion, the terms crest of spillway and top of dam should be used in referring to the overflow section and dam proper, respectively. Cross section A slice through the dam showing elevation vertically and direction of natural water flow horizontally from left to right. Also, a slice through a spillway showing elevation vertically and left and right sides of the spillway looking downstream. Cutoff Wall A wall of impervious material (e.g., concrete, asphaltic concrete, steel sheet piling) built into the foundation to reduce seepage under the dam. Dam An artificial barrier generally constructed across a watercourse for the purpose of impounding or diverting water. Dam failure The uncontrolled release of a dam s impounded water. Dam Operator The person(s) or unit(s) of government with responsibility for the operation and maintenance of dam. Drain, toe or foundation, or blanket A water collection system of sand and gravel and typically pipes along the downstream portion of the dam to collect seepage and convey it to a safe outlet. Drainage area (watershed) The geographic area on which rainfall flows into the dam. Drawdown The lowering or releasing of the water level in a reservoir over time or the volume lowered or released over a particular period of time. Embankment Fill material, usually earth or rock, placed with sloping sides. Emergency A condition that develops unexpectedly, endangers the structural integrity of the dam and/or downstream human life and property, and requires immediate action. ME1292/App A North Pond EAP Page 21 April 2017

38 W.H. Sammis Coal Plant North Pond Emergency Action Plan(EAP) A formal document identifying potential emergency conditions that may occur at the dam and specifying preplanned actions to minimize potential failure of the dam or minimize failure consequences including loss of life, property damage, and environmental impacts. Evacuation map A map showing the geographic area downstream of a dam that should be evacuated if it is threatened to be flooded by a breach of the dam or other large discharge. Failure An incident resulting in the uncontrolled release of water from a dam. Filter The layers of sand and gravel in a drain that allow seepage through an embankment to discharge into the drain without eroding the embankment soil. Foundation of Dam The natural material on which the dam structure is placed. Freeboard Vertical distance between a stated water level in the reservoir and the top of dam. Gate, slide or sluice, or regulating An operable, watertight valve to manage the discharge of water from the dam. Groin The area along the intersection of the face of a dam and the abutment. Hazard classification A system that categorizes dams (high, significant, or low) according to the degree of their potential to create adverse incremental consequences such as loss of life, property damage, or environmental impacts of a failure or misoperation of a dam. Height, dam The vertical distance between the lowest point along the top of the dam and the lowest point at the downstream toe, which usually occurs in the bed of the outlet channel. Hydrograph, inflow or outflow, or breach A graphical representation of either the flow rate or flow depth at a specific point above or below the dam over time for a specific flood occurrence. Incident Commander The highest predetermined official available at the scene of an emergency situation. Instrumentation An arrangement of devices installed into or near dams that provide measurements to evaluate the structural behavior and other performance parameters of the dam and appurtenant structures. Notification To immediately inform appropriate individuals, organizations, or agencies about a potentially emergency situation so they can initiate appropriate actions. Piping The progressive destruction of an embankment or embankment foundation by internal erosion of the soil by seepage flows. Primary Spillway (Principal Spillway) The principal or first used spillway during flood flows. Probable Maximum Precipitation (PMP) or Flood (PMF) The theoretically greatest precipitation or resulting flood that is meteorologically feasible for a given duration over a specific drainage area at a particular geographical location. Reservoir The body of water impounded or potentially impounded by the dam. Riprap A layer of large rock, precast blocks, bags of cement, or other suitable material, generally placed on an embankment or along a watercourse as protection against wave action, erosion, or scour. Risk A measure of the likelihood and severity of an adverse consequence. ME1292/App A North Pond EAP Page 22 April 2017

39 W.H. Sammis Coal Plant North Pond Scarp The nearly vertical, exposed earth surface created at the upper edge of a slide or a breached area along the upstream slope of an earthen embankment. Seepage The natural movement of water through the embankment, foundation, or abutments of the dam. Slide The movement of a mass of earth down a slope on the embankment or abutment of the dam. Spillway (auxiliary or emergency) The appurtenant structure that provides the controlled conveyance of excess water through, over, or around the dam. Spillway capacity The maximum discharge the spillway can safely convey with the reservoir at the maximum design elevation. Spillway crest The lowest level at which reservoir water can flow into the spillway. Stilling Basin A basin constructed to dissipate the energy of fast-flowing water, eg. from a spillway or bottom outlet, and to protect the river bed from erosion. Stoplogs Logs or timbers, steel or concrete beams placed on top of each other with their ends held in guides on each side of a channel or conduit. Storage The retention of water or delay in runoff either by planned operation, as in a reservoir, or by temporarily filling the overflow areas, as in the progression of a flood crest through a natural stream channel. Tailwater The body of water immediately downstream of the embankment at a specific point in time. Toe of dam The junction of the upstream or downstream face of an embankment with the ground surface. Top of dam (crest of dam) The elevation of the uppermost surface of an embankment which can safely impound water behind the dam. Trash Rack A structure of metal or concrete bars located in the waterway at an intake to prevent the entry of floating or submerged debris. Valve In general, a device fitted to a pipeline or orifice in which the closure member is either rotated or moved transversely or longitudinally in the waterway so as to control or stop the flow. Weir A low dam or wall built across a stream to raise the upstream water level. Termed fixedcrest weir when uncontrolled. A structure built across a stream or channel for the purpose of measuring flow. Sometimes described as a measuring weir or gauging weir. Types of weirs include broadcrested weirs, sharpcrested weirs, ogee weirs, and V-notched weirs. ME1292/App A North Pond EAP Page 23 April 2017

40 W.H. Sammis Coal Plant North and South Ponds ATTACHMENT C South Pond Emergency Action Plan

41 EMERGENCY ACTION PLAN FOR Sammis Station South Pond JEFFERSON COUNTY VILLAGE OF STRATTON OWNER FIRSTENERGY GENERATION LLC CREATED 4/17/2017

42 W.H. Sammis Coal Plant South Pond I. Notification Flowchart Table of Contents II. III. IV. Purpose Project Description and Downstream Hazard Emergency Detection, Evaluation, and Classification V. Responsibilities VI. Preparedness VII. Downstream Hazard Map VIII. Appendices Appendix A: Plans for Training, Exercising, and Updating Appendix B: Distribution of the EAP Appendix C: Glossary of Terms ME1292/App B South Pond EAP B-i April 2017

43 W.H. Sammis Coal Plant South Pond I. Notification Flowchart Dam Owner Representative #1 Name: Eric Akenhead Phone number: Cell phone number: Dam Owner Representative #2 Name: Richard Mezan Phone number: Cell phone number: The dam owner representatives will determine the alert level at the dam according to Section IV of this EAP and notify 911, ODNR, and the owner s engineer. For a Watch Alert Level, notify the parties below that there is a potential dam failure situation developing. For a Warning Alert Level, notify the parties below that a dam failure is in progress or is imminent. Evacuations and/or road closures are needed. Jefferson County Emergency Management Agency: Emergency Center: New Cumberland Lock& Dam Toronto Water Filtration Plant Through the emergency dispatch system, the following entities should be contacted: Fire Department Police Department National Weather Service Fred McMullen ODOT, District ODNR, Dam Safety Engineering Program 24-hour emergency #: Owner Engineer Ken Bartlett Phone: Cell: ME1292/App B South Pond EAP Page 1 April 2017

44 W.H. Sammis Coal Plant South Pond II. Purpose The purpose of an Emergency Action Plan (EAP) is to provide the owner/operator of a dam with a clear plan of action when any dam emergency arises. An emergency is identified as any condition which: develops unexpectedly; endangers the structural integrity of the dam; and could result in the dam's failure producing downstream flooding, requiring immediate action. The EAP provides a description of the dam and the area at risk as well as contact information for all parties involved in responding to or affected by an emergency at the dam. The EAP outlines what actions are required in the event of an emergency. By creating and implementing an EAP the owner/operator of a dam can reduce the risk of human life loss or injury, minimize property damage during an unusual or emergency event and potentially lessen their liability. III. Description of Project and Downstream Hazard The South Pond was initially constructed in 1959, modified in 1971, and further modified into its current configuration in The pond is used for temporary storage of bottom ash (i.e., CCR) and treatment of other wastewater produced by plant operations. The South Pond is typically in service for approximately six to nine months (depending on the volume of CCR and waste produced by the Plant s generating units) before being taken out of service for cleaning, at which time the adjacent North Pond is used for temporary storage of CCR and plant wastewater. The maximum estimated storage of the South Pond is 60-acre-feet when filled to its crest elevation of feet mean sea level (ft-msl). Water and bottom ash pipes enter the northeast side of the Sammis Station South Pond and discharge water/bottom ash into the Pond. Bottom ash settles out as the water flows around a center dike and into a discharge structure/spillway in the southern portion of the pond. The water flows over a weir in the structure. Water exits at the base of the structure/spillway through a buried 24 HDPE pipe which passes through a discharge shutoff valve. Water then flows through a 24 HDPE pipe and ties into the 48 storm drain within in the northern embankment of the North Pond. The storm drain discharges at Plant NPDES Outfall 009. Water at the Outfall then passes through a culvert under State Route 7 and discharges to the Ohio River just upstream of the New Cumberland Lock and Dam. A Site location map and Site plan are presented as Figures 1 and 2, respectively. Downstream Impacts and Notifications In the event of a failure of the east dam embankment of the south pond, water would be expected to flow north along the ditch bordering southbound State Route 7 and through the existing storm drain inlets to the Ohio River. It is likely that portions of Route 7 and the New Cumberland Lock ME1292/App B South Pond EAP Page 2 April 2017

45 W.H. Sammis Coal Plant South Pond and Dam property would be inundated by water following the single dam failure, Water would also flow north and south along the ditch bordering east side State Route 7 In the event of a simultaneous failure of the east dam embankments of the north and south ponds, water would likely inundate higher elevations of Route 7 within approximately the same areas of Route 7 as expected from a single dam failure. No serious downstream impacts are expected from a failure of the embankment(s); however, the following notifications (also see Section I) would be made: Jefferson County Emergency Management Agency would be notified. The New Cumberland Lock and Dam would be notified. The Toronto Water Filtration Plant would be notified since the Plant has a River intake approximately 5 miles downstream from Sammis Plant. The flooding of any property would not be life threatening or cause major damage. Detailed analysis of potent downstream flooding impacts is presented in the report, Initial Hazard Potential Classification, W.H. Sammis Coal Plant North and South Ponds, Stratton, Ohio (Geosyntec 2016). ME1292/App B South Pond EAP Page 3 April 2017

46 W.H. Sammis Coal Plant South Pond ³ South Pond P:\GIS\Sammis Power Station - ME1292\Report 1\Figure 1 - Site Location Map South Pond.mxd; RDW/MS; 21-Dec-2015 Notes: Topographinc map provided by U.S Geological Survey on 21 December East Liverpool South, West Virginia (1985), and Wellsvill, Ohio (1986) 2,000 1, ,000 Feet Site Location Map: South Pond Sammis Power Station Stratton, Ohio Columbia, Maryland December 2015 Figure 1 ME1292/App B South Pond EAP Page 4