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HomeMy WebLinkAboutNC0003417_Special Order By Consent_20190108 RECEIVEDIDENR/DWR JAN082019 NORTH CAROLINA Water Resources ENVIRONMENTAL MANAGEMENT COMMISSION Permitting Section COUNTY OF WAYNE IN THE MATTER OF ) NORTH CAROLINA ) SPECIAL ORDER BY CONSENT NPDES PERMIT NC0003417 ) ) EMC SOC WQ S 18-006 HELD BY ) DUKE ENERGY PROGRESS, LLC ) Pursuant to the provisions of North Carolina General Statutes (G.S.) 143-215.2,this Special Order by Consent is entered into by Duke Energy Progress, LLC, hereinafter referred to as Duke Energy, and the North Carolina Environmental Management Commission, an agency of the State of North Carolina created by G.S. 143B-282, and hereinafter referred to as the Commission. Duke Energy and the Commission are referred to hereafter collectively as the"Parties." 1. Stipulations: Duke Energy and the Commission hereby stipulate the following: a. This Special Order by Consent("Special Order") addresses issues related to the elimination of seeps (as defined in subparagraphs f and g below) from Duke Energy's coal ash basins during the separate and independent process of basin closure under the Coal Ash Management Act, G.S. 130A-309.200 through 130A- 309.231 ("CAMA") and the Federal Coal Combustion Residuals Rule,40 CFR Parts 257 and 261. The Environmental Protection Agency first directed permitting authorities to consider potential impacts on surface water of seeps from earthen impoundments in 2010. At that time, Duke Energy began discussions with the North Carolina Department of Environmental Quality("the Department")regarding seeps at multiple Duke Energy facilities, including identifying certain seeps in permit applications and providing data to the Department regarding seeps. In 2014, Duke Energy provided a comprehensive evaluation of all areas of wetness and formally applied for NPDES permit coverage of all seeps. Since 2014, Duke Energy has performed periodic inspections and promptly notified the Department of new seeps and sought NPDES permit coverage where appropriate. On March 4, 2016, the Department issued Notices of Violation ("NOVs")to Duke Energy related to seeps. EMC SOC WQ S18-006 Duke Energy Progress,LLC p. 2 Both decanting and dewatering of the H. F. Lee Facility's coal ash basins will be required before the ash basins can be closed. Decanting(i.e., removal of the free water on the surface of the coal ash basin), has already been observed to affect existing seeps at Duke Energy's H. F. Lee Facility. Removal of remaining coal ash wastewater through continued decanting and dewatering(i.e. removal of sufficient interstitial water) is expected to substantially reduce or eliminate the seeps. In order to accomplish this goal of substantially reducing or eliminating seeps,this Special Order affords certain relief to Duke Energy related to the non- constructed seeps (as defined in subparagraph g below),while Duke Energy completes activities associated with closure of the ash basins at the H. F. Lee Facility. After completion of those activities, for any remaining seeps, Duke Energy must take appropriate corrective action as specified more fully below. b. Duke Energy has been issued a North Carolina NPDES permit for operation of an existing wastewater treatment works at the following electric generation facility (the "H. F. Lee Facility"): Permit Issuance Receiving Water Facility Number CountyDate for Primary Outfall H. F. Lee NC0003417 Wayne 07/23/2010 Neuse River c. The H. F. Lee Facility listed above has ceased coal fired generation and now consists of a 3 x 1 combined cycle unit capable of being fired on natural gas or oil, and five simple cycle combustion turbines. The facility's coal ash basins still exist, and are subject to the provisions of this Special Order. d. The H. F. Lee Facility also has a permitted wastewater cooling pond that was used during coal-fired operations, and continues to be used for the combined cycle plant. Several areas of minor seep flow from the cooling pond to the Neuse River have been observed. Chemical testing of the cooling pond seeps has revealed some contain minor concentrations of coal combustion residuals (CCR). The cooling pond seeps listed in Attachment A are also addressed by this Special Order. e. Wastewater treated at coal-fired electric stations includes water mixed with ash produced through the combustion of coal for the steam generation process. Ash is controlled and collected through the use of water, creating a slurry that is conveyed to impoundments or basins with earthen dike walls. In the ash basin, the solids separate from the liquid portion,with the resulting supernatant discharged under the terms of the NPDES permit. EMC SOC WQ S18-006 Duke Energy Progress,LLC p. 3 f. The coal ash basins and the cooling pond at the H. F. Lee Facility are unlined, having no impermeable barrier installed along their floors or sides. Earthen basins and dike walls are prone to the movement of liquid through porous features within those structures through a process known as seepage. The H. F. Lee Facility exhibits locations adjacent to,but beyond the confines of, the coal ash basins and the cooling pond where seepage of wastewater from those basins may intermix with groundwater, reach the land surface (or"daylight"), and may flow from that area. Once such seepage reaches the land surface, it is referred to as a "seep." Each of the seeps identified at the H. F. Lee Facility and addressed in this Special Order exhibit some indication of the presence of coal ash wastewater. Both(a) confirmed seeps and(b) areas identified as potential seeps that were later dispositioned, are identified in Attachment A. g. Seeps that are not on or within the dam structure or that do not convey wastewater via a pipe or constructed channel directly to a receiving stream are referred to as "non-constructed seeps." Non-constructed seeps at the H. F. Lee Facility often exhibit low flow volume and may be both transient and seasonal in nature, and may, for example,manifest as an area of wetness that does not flow to surface waters, a point of origin of a stream feature, or flow to an existing stream feature. These circumstances of the non-constructed seeps make them difficult to discern, characterize, quantify and/or monitor as discrete point source discharges. This creates challenges in permit development and compliance monitoring because it is difficult to accurately monitor for flow and discharge characterization. Non- constructed seeps at the H. F. Lee Facility present significant challenges to their inclusion in NPDES permits as point source discharges,but they do cause or contribute to pollution of classified waters of the State. Therefore,these non- constructed seeps are addressed in this Special Order rather than in an NPDES permit. h. Investigations and observations conducted by the Department and U. S. Army Corps of Engineers staff have concluded that some seeps emanating from Duke Energy's coal ash ponds create and/or flow into features delineated as classified waters of the State or Waters of the United States. Collectively,the volume of non-constructed seeps is generally low compared to the volume of permitted wastewater discharges at the Duke Energy Facilities. EMC SOC WQ S18-006 Duke Energy Progress,LLC p. 4 j. In 2014, Duke Energy conducted a survey of each coal-fired electric generation station to identify potential seeps from the coal ash surface impoundments. Duke Energy included all areas of wetness identified around the impoundments as seeps, and submitted applications to include those seeps in NPDES permits. Beginning in 2015, Duke Energy has implemented semi-annual surveys to identify new seeps in the vicinities of the coal ash basins. Additional seeps have been observed and documented during these surveys and reported to the Department pursuant to a Discharge Identification Plan mandated by CAMA. Additional investigation has determined that not all of areas identified in 2014 are seeps,but each Duke Energy facility does have multiple seeps. k. The Department issued NOVs to Duke Energy on March 4, 2016 for the seeps that emanate from the unlined coal ash surface impoundments at the Duke Energy Facilities. 1. Non-constructed seeps create conditions such that certain surface water quality standards may not consistently be met at all Duke Energy monitoring sites. m. The presence of coal ash influenced water in the non-constructed seeps causes or contributes to pollution of the waters of this State, and Duke Energy is within the jurisdiction of the Commission as set forth in G.S. Chapter 143,Article 21. n. A list of seeps identified in the vicinities of the coal ash surface impoundments at the H. F. Lee Facility, as well as their locations, and the bodies of water those seeps may flow into (if applicable), can be found in Attachment A to this Special Order. o. Duke Energy must close the coal ash surface impoundments at all North Carolina coal-fired electric generating stations in accordance with applicable requirements set out in CAMA and the Federal Coal Combustion Residuals Rule,requirements of which are independent of the resolution of seeps addressed in this Special Order. p. Decanting of wastewater performed at Duke Energy's coal ash basins is expected to eliminate or substantially reduce the seeps from the ash basins at the Duke Energy Facilities. q. Since this Special Order is by consent, the Parties acknowledge that review of the same is not available to the Parties in the N.C. Office of Administrative Hearings. Furthermore, neither party shall file a petition for judicial review concerning the terms of this Special Order. EMC SOC WQ S18-006 Duke Energy Progress,LLC p. 5 2. Duke Energy, desiring to resolve the matters causing or contributing to pollution of the waters of the State described above, hereby agrees to do the following: a. Penalties 1) Upfront Penalty. As settlement of all alleged violations due to seepage at these Duke Energy Facilities,pay the Department,by check payable to the North Carolina Department of Environmental Quality, a penalty in the amount of$72,000, calculated based upon$6,000 each for twelve non- constructed seeps identified prior to January 1, 2015. A certified check in the amount of$72,000.00 must be made payable to the Department of Environmental Quality and sent to the Director of the Division of Water Resources(DWR) at 1617 Mail Service Center, Raleigh,North Carolina 27699-1617 by no later than thirty(30)days following the date on which this Special Order is approved and executed by the Commission, and received by Duke Energy. No penalty shall be assessed for seeps identified after December 31, 2014, given Duke Energy's inclusion of seeps in permit applications and compliance with the Discharge Identification Plan required under CAMA. By entering into this Special Order, Duke Energy makes no admission of liability,violation or wrongdoing. Except as otherwise provided herein,' payment of the upfront penalty does not absolve Duke Energy of its responsibility for the occurrence or impacts of any unauthorized discharges in the area of the Duke Energy Facilities that may be discovered in the future, nor does the payment preclude DWR from taking enforcement action for additional violations of the State's environmental laws. I See especially paragraph 2(a)(2) excepting newly identified seeps from future penalties under certain conditions. EMC SOC WQ S18-006 Duke Energy Progress,LLC p. 6 2) Stipulated Penalties. Duke Energy agrees that unless excused under paragraph 5, Duke Energy will pay the Department,by check payable to the North Carolina Department of Environmental Quality, stipulated penalties according to the following schedule for failure to perform activities described in paragraphs 2(b and c), or for failure to comply with interim action levels listed in Attachment A. Failure to meet a deadline in the Compliance $1,000.00/day for the first seven Schedule in 2(b)of this Special Order days; $2,000.00/day thereafter Failure to meet any other deadline in this $1,000.00/day for the first seven Special Order days; $2,000.00/day thereafter Exceedance of an interim action level listed in $4,500.00 per monitored exceedance Attachment A Monitoring frequency violations $1,000.00 per violation Failure to submit,by the deadline set forth herein, adequate amendments to groundwater Corrective Action Plans or Closure Plans to $5,000.00 per day, to a maximum of address all remaining seeps,through $1,000,000.00. corrective action as applicable under paragraph 2(b)(7)of this Special Order.2 As long as Duke Energy remains in compliance with the terms of this Special Order, as well as CAMA and conditions of any approvals issued thereunder, the Department shall not assess civil penalties for newly identified seeps. b. Compliance Schedule. Duke Energy shall undertake the following activities in accordance with the indicated time schedule. No later than fourteen(14) calendar days after any date identified for accomplishment of any activity, Duke Energy shall submit to the Director of DWR written notice of compliance or noncompliance therewith. In the case of compliance,the notice shall include the date compliance was achieved along with supporting documentation if applicable. In the case of noncompliance,the notice shall include a statement of the reason(s) for noncompliance, remedial action(s)taken, and a statement identifying the extent to which subsequent dates or times for accomplishment of listed activities may be affected. 2 Failure to adequately implement any amended Corrective Action Plan or Closure Plan will be handled in the normal course. EMC SOC WQ S18-006 Duke Energy Progress,LLC p. 7 Duke Energy is required to comply with the requirements of G.S. § 130A- 309.216. Duke Energy has announced plans to construct an ash beneficiation plant at the H. F. Lee Facility capable of processing 300,000 tons of CCR material per year. 1) The Coal Ash Management Act(G.S. § 130A-309.210)required the cessation of CCR wastewater placement into the basins at the H. F. Lee Facility by October 1, 2014. Duke Energy commenced decanting in April 2016. Decanting will be completed by March 31, 2019. 2) Dewatering will be required in order to excavate the ash for the purpose of beneficiation. Duke Energy will begin the process of removal of interstitial water from the H. F. Lee Facility no later than July 31, 2019 and will continue as needed to support the beneficiation plant described above. 3) Once the dewatering process is initiated,within (30)days after the end of each quarter, Duke Energy shall provide reports on the status of dewatering work and other activities undertaken with respect to excavation of each coal ash surface impoundment to DWR. The quarterly reports are due by April 30, July 30, October 30, and January 30. The reports are to be submitted as follows: one copy must be mailed to DWR's Washington Regional Office Supervisor, 943 Washington Square Mall, Washington,NC 27889, and one copy must be mailed to the Water Quality Permitting Program, Division of Water Resources, 1617 Mail Service Center, Raleigh NC 27699-1617. The quarterly reporting requirement shall remain in force until completion of two years of beneficiation operations. EMC SOC WQ S18-006 Duke Energy Progress,LLC p. 8 4) Duke Energy shall conduct annual comprehensive surveys of areas down gradient of the ash basins,the Lay of Land Area(LOLA) and the cooling pond, identifying new seeps, and documenting the physical characteristics of previously documented seeps. All examinations of seeps must include identification of seeps by approximate latitude and longitude and date- stamped digital photographs of their appearance. A report summarizing the findings of the surveys, including a section analyzing the effect decanting of the basin(s) has on seep flows, accompanied by copies of the photographs noted above ("Annual Seep Report"), shall be submitted to DWR in conjunction with submittal of the April 30 quarterly report noted in 2(b)(3) above. This Annual Seep Report must list any seep that has been dispositioned(as described below) during the previous year, including an analysis of the manner of disposition. For purposes of this Special Order, "dispositioned" includes the following: (1)the seep is dry for at least three consecutive quarters; (2) the seep does not constitute, and does not flow to, waters of the State or Waters of the United States for three consecutive quarters; (3)the seep is no longer impacted by flow from any coal ash basin as determined by the Director of DWR in accord with applicable law and best professional judgment; or(4)the seep has been otherwise eliminated(e.g.,through an engineering solution). If a seep that has been dispositioned through drying up reappears in any subsequent survey, such a seep will no longer be deemed dispositioned and can be subsequently re-dispositioned as specified above. 5) No later than October 31, 2021 Duke Energy shall conduct a comprehensive survey of areas down gradient of ash basins at the H. F. Lee Facility, identifying new seeps, and documenting the physical characteristics of previously documented seeps. All examinations of seeps must include identification of seeps by approximate latitude and longitude and date-stamped digital photographs of their appearance. A report summarizing the findings of this survey, including a section analyzing the effect decanting of the basin(s)has had on seep flows, accompanied by copies of the photographs noted above, shall be submitted to the Director of DWR ("Final Seep Report"). This Final Seep Report must list any seep that has been dispositioned(as described in subparagraph(4) above) during decanting process, including an analysis of the manner of disposition. The determination of whether a seep is dispositioned rests with the Director of DWR. At, or at any time prior to, submission of the Final Seep Report, Duke Energy shall seek formal certification from the Director of DWR, certifying the disposition of any seep that Duke Energy has characterized as dispositioned. Any seeps not certified as dispositioned by the Director of DWR shall not be deemed as dispositioned. EMC SOC WQ S18-006 Duke Energy Progress,LLC p. 9 6) If any seeps have not been certified by the Director of DWR as dispositioned(as described in subparagraph 4) above),Duke Energy shall conduct a characterization of those seeps.3 Duke Energy shall submit a report on the findings of these characterizations ("Seep Characterization Report")to the Director of DWR no later than December 31, 2021 (i.e., within 60 days of the submittal of the Final Seep Report). The Seep Characterization Report must include all sampling data for each remaining seep as well as Duke Energy's evaluation of the jurisdictional status of all seeps at the H. F. Lee Facility. The determination regarding whether a surface water feature is a classified water of the State rests with DWR. 7) Within 60 days of the submittal of the Seep Characterization Report,Duke Energy shall submit a complete and adequate proposed amendment to the groundwater Corrective Action Plan and/or Closure Plan as appropriate for the Facility describing how any seeps identified in the Seep Characterization Report will be managed in a manner that will be sufficient to protect public health, safety, and welfare, the environment, and natural resources. This proposed amendment will go to public comment. Duke Energy shall submit documentation that the proposed modification has been submitted to the appropriate division within the Department that has authority for approving modification of the groundwater Corrective Action Plan and/or Closure Plan. The content of, and DEQ's review of, an amendment to a groundwater Corrective Action Plan shall be consistent with Title 15A, Chapter 2L of the N.C. Administrative Code (specifically including 2L.0106(h)-(o)). The amendment to the Corrective Action Plan and/or Closure Plans shall be implemented byDuke Energyin accordance with the deadlines contained P therein, as approved or conditioned by the Department. Failure by Duke Energy to implement the amendment will be handled in the normal course bythe Department in accordance with its enforcementprocedures (i.e., p outside this Special Order). Notwithstanding the foregoing provisions of this paragraph, any cooling pond seeps contained in the Seep Characterization Report shall be addressed in a separate report(rather than a proposed amendment to the groundwater Corrective Action Plan and/or Closure Plan), specific to the matters of those seeps, and describe how remaining cooling pond seeps will be managed in a manner that will be sufficient to protect public health, safety, and welfare,the environment, and natural resources. The report shall be submitted to DWR's Complex 3 If any seep is dispositioned between the time that the Final Seep Report is submitted and the time the Seep Characterization Report is submitted, an analysis of the manner of disposition must be included in the Seep Characterization Report, and Duke Energy must seek certification of such a disposition from the Director of DWR. Only if such certification is received prior to the due date of the proposed amendment described in paragraph 2(b)(7)may such a seep, certified as dispositioned,be omitted from the proposed amendment. EMC SOC WQ S18-006 Duke Energy Progress,LLC p. 10 Permitting Unit within 60 days of the submittal of the Seep Characterization Report ("Cooling Pond Seep Report"). For clarity, listed below is a summary of the timetable for the documents due after completion of steps above: Document Due Date Final Seep Report October 31,2021 Seep Characterization Report December 31, 2021 Proposed amendment to groundwater Corrective Action Plan and/or Closure February 28, 2022 Plan, and/or Cooling Pond Seep Report 8) Termination of Special Order This Special Order shall terminate on the later of the following dates: • January 31, 2022; or • 30 days following the approval of an amended groundwater Corrective Action Plan and/or Closure Plan, as appropriate (if an amendment is submitted in compliance with subparagraph 2(b)(7) above). c. Interim Action Levels. I) Upon the complete execution of this Special Order, with regard to non- constructed seeps, interim action levels for the receiving waters (which are minor tributaries)are hereby established as noted in Attachment A. The interim action levels are site-specific. Duke Energy shall monitor at approved sampling sites to ensure interim action levels are met. Interim action levels shall remain effective in the designated surface waters until the applicable termination date in paragraph 2(b)(8) is reached. 2) Duke Energy shall perform monitoring of waters receiving flow from non- constructed seeps in accordance with the schedules listed in Attachments A and B, except as noted in paragraph 2(c)(3)below. EMC SOC WQ S18-006 Duke Energy Progress,LLC p. 11 3) If the monitoring of any classified water of the State receiving flow from seeps regulated by this Special Order indicates exceedance of any interim action level established by the Special Order, Duke Energy shall increase monitoring at that location from quarterly to monthly until concentrations of monitored characteristics return to those observed at the initiation of the Special Order. If any interim action level established by the Special Order is exceeded by more than 20% in a single sampling event, or exceeded for two (2)consecutive monitoring events, in addition to paying the associated stipulated penalty, Duke Energy shall conduct a re-assessment of the contributing seep(s), including,but not limited to, evaluation of proposed remedial actions for treatment and/or control of the seep such that impacts to the receiving waters are quickly mitigated. A report compiling the findings of the re-assessment, including proposed remedial actions, shall be provided to the Director of DWR within 60 days of any applicable exceedance. Following its review,DWR shall notify Duke Energy of its concurrence or disapproval of Duke Energy's proposed remedial actions. 4) Monitoring associated with seeps covered by this Special Order is exempt from the electronic reporting requirements associated with NPDES permits. Results of monitoring required exclusively per the terms of this Special Order shall be reported to the Director of DWR in a spreadsheet/worksheet format agreed to by Duke Energy and DWR. Monitoring data shall be submitted to the Director of DWR in a digital format no later than 30 days following the end of each calendar quarter for as long as the Special Order is in effect. Monitoring data shall be sent to the following email address: desocdata@ncdenr.gov. Data from those sites with monitoring required exclusively per the terms of the Special Order will be posted on DWR's website to provide the public with the opportunity for viewing. 3. Duke Energy will continue to operate the H. F. Lee Facility's coal ash surface impoundments in such a manner that their performance is optimized, and potential for surface waters to be affected by seeps is minimized. 4. Duke Energy shall make available on its external website the NPDES permits,this Special Order and all reports required under this Special Order for the H. F. Lee Facility no later than thirty(30) days following their effective or submittal dates. EMC SOC WQ S18-006 Duke Energy Progress,LLC p. 12 5. Duke Energy and the Commission agree that the stipulated penalties specified in paragraph 2(a)(2) are not due if Duke Energy satisfies DWR that noncompliance was caused solely by: a. An act of God; b. An act of war; c. An intentional act or omission of a third party,but this defense shall not be available if the act or omission is that of an employee or agent of Duke Energy or if the act or omission occurs in connection with a contractual relationship with Duke Energy; d. An extraordinary event beyond the Duke Energy's control, specifically including any court order staying the effectiveness of any necessary permit or approval. Contractor delays or failure to obtain funding will not be considered as events beyond Duke Energy's control; or e. Any combination of the above causes. 6. Failure within thirty(30) days of receipt of written demand by DWR to pay the stipulated penalties, or challenge them by a contested case petition pursuant to G.S. 150B-23,will be grounds for a collection action,which the Attorney General is hereby authorized to initiate. The only issue in such an action will be whether the thirty(30) days has elapsed. 7. Any non-constructed seeps causing or contributing to pollution of waters of the State associated with the coal ash impoundments and the cooling pond at Duke Energy's H. F. Lee Facility, and listed in Attachment A to this Special Order, are hereby deemed covered by this Special Order. Any newly-identified non-constructed seeps discovered while this Special Order is in effect, and timely reported to the Department per the terms of CAMA and this Special Order, shall be deemed covered by the terms of the Special Order, retroactive to the time of their discovery. Newly-identified non-constructed seeps must be sampled for the presence of those characteristics listed in Attachment B to this Order. Newly-identified non-constructed seeps found to be causing or contributing to pollution of the waters of the State, with the effect of causing a violation of water quality standards in surface waters not already referenced in the Special Order, may require modification of the Special Order to address those circumstances. 8. Noncompliance with the terms of this Special Order is subject to enforcement action in addition to the above stipulated penalties, including,but not limited to injunctive relief pursuant to G.S. 143-215.6C or termination of this Special Order by the Director of DWR upon ten (10) days' notice to Duke Energy. Noncompliance with the terms of this Special Order will not be subject to civil penalties in addition to the above stipulated penalties. EMC SOC WQ S18-006 Duke Energy Progress,LLC p. 13 9. This Special Order and any terms or conditions contained herein,hereby supersede any and all previous Special Orders, Enforcement Compliance Schedule Letters, terms, conditions, and limits contained therein issued in connection with NPDES permit NC0003417. 10. This Special Order may be modified at the Commission's discretion,provided the Commission is satisfied that Duke Energy has made good faith efforts to secure funding, complete all construction, and achieve compliance within the dates specified. In accordance with applicable law, modification of this Special Order will go to public notice prior to becoming effective. 11. Failure to pay the up-front penalty within thirty(30) days of execution of this Special Order will terminate this Special Order. 12. In addition to any other applicable requirement, each report required to be submitted by Duke Energy under this Special Order shall be signed by a plant manager or a corporate official responsible for environmental management and compliance, and shall include the following certification: I certify under penalty of law that this document and all attachments were prepared under mydirection or supervision in accordance with P P a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system,or those persons directly responsible for gathering the information,the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations. 13. This Special Order shall become effective in accordance with state law, and once effective, Duke Energy shall comply with all schedule dates, terms, and conditions herein. EMC SOC WQ S18-006 Duke Energy Progress,LLC p. 14 This Special Order by Consent shall expire no later than February 28, 2023. F uke Ene Progress, LLC: t ( 2 /L4 Paul Draovitch Date Senior Vice President, Environmental, Health & Safety For the North Carolina Environmental Management Commission: J. D. Solomon,P.E. Chair of the Commission Date I Attachment A S18-006 Duke Energy Progress, LLC—H. F. Lee Energy Complex, p.1 Approximate Receiving Seep ID Location Coordinates Description Receiving Waterbody SOC Monitoring Interim Action Number Waterbody Levels Latitude Longitude Classification Seep from the land area north of the cooling Instream pond, between the cooling pond and the N/A—2B Standards LOLA S-01 35.379568 -78.075043 Neuse River. Not a seep emanating from the Neuse River WS-IV;NSW monitoring of the Apply active ash basin. Neuse River Seep from the land area north of the cooling Instream pond,between the cooling pond and the N/A—2B Standards LOLA S-01A 35.379648 -78.074632 Neuse River. Not a seep emanating from the Neuse River WS-IV;NSW monitoring of the Apply active ash basin. Neuse River Seep from the land area north of the cooling Instream pond, between the cooling pond and the N/A—2B Standards LOLA S-01B 35.380846 -78.077697 Neuse River. Not a seep emanating from the Neuse River WS-IV;NSW monitoring of the Apply active ash basin. Neuse River Low volume seep to small channel north of Ditch system draining areas S-01 35.386858 -78.073453 active ash basin at the toe of the dike. Flows north and WS-IV;NSW Monitoring at See S-03A west,then south,toward confluence with west of active location S-03A Neuse River at sampling site S-03A. ash basin Low volume seep to small channel north of Ditch system draining areas S-02 35.384001 -78.081383 active ash basin at the toe of the dike. Flows north and WS-IV; NSW Monitoring at See S-03A west,then south,toward confluence with west of active location S-03A Neuse River at sampling site S-03A. ash basin *Location previously investigated as a seep. Monitoring has not indicated the presence of coal combustion residuals. **Seep dispositioned via repair and/or non-flowing condition to potentially reach WOTUS,or other,as noted. Monitoring shall be conducted at the approximate locations indicated on the attached site map. All monitoring shall be conducted per the requirements found in Attachment B of this Order. Attachment A S 18-006 Duke Energy Progress, LLC— H. F. Lee Energy Complex, p.2 Approximate Receiving Seep ID Location Coordinates Description Receiving Waterbody SOC Monitoring Interim Action Levels Number Waterbody Latitude Longitude Classification Ditch system Channel on west side of active ash basin. Directs draining areas S-03** 35.382666 -78.084374 flow from ditch on north side of active ash basin north and WS-IV; NSW Monitoring at See S-03A south toward Neuse River. Not a seep. west of active location S-03A ash basin Ditch system Monitoring at Site just before confluence of S-03 channel draining areas Arsenic 400 µg/L S-03A** 35.381806 -78.084052 conveying flow from upstream sites and the north and WS-IV; NSW location S 03A Hardness 500 mg/L Neuse River. Not a seep. west of active prior to entering TDS 800 mg/L ash basin Neuse River Instream S-04 35.381993 -78.078784 Stagnant, ponded water inland from river terrace Neuse River WS-IV; NSW monitoring of N/A—2B Standards below southwest side of active ash basin. Apply the Neuse River Static AOW near riprap area on the south side of the southeast corner of active ash basin. N/A—Seep N/A—Seep S 05** 35.379045 -78.070293 Location has been repaired. No flow observed in Neuse River WS-IV; NSW Dispositioned Dispositioned recent observations. Low volume seep to small channel on east side of Ditch system active ash basin at the toe of the dike. Flows draining areas Monitoring at S-06 35.386968 -78.071942 See S-09 south,toward confluence with Neuse River at north and east WS-IV; NSW location S-09 sampling site S-09. of active ash basin Low volume seep to small channel on east side of Ditch system active ash basin at the toe of the dike. Flows draining areas Monitoring at S-07 35.382767 -78.069655 south,toward confluence with Neuse River at north and east WS-IV; NSW location S-09 See S-09 sampling site S-09. of active ash basin *Location previously investigated as a seep. Monitoring has not indicated the presence of coal combustion residuals. **Seep dispositioned via repair and/or non-flowing condition to potentially reach WOTUS,or other,as noted. Monitoring shall be conducted at the approximate locations indicated on the attached site map. All monitoring shall be conducted per the requirements found in Attachment B of this Order. Attachment A S18-006 Duke Energy Progress, LLC— H. F. Lee Energy Complex, p.3 Approximate Seep ID Location Coordinates Receiving Receiving Number Description Waterbody Waterbody SOC Monitoring Interim Action Levels Latitude Longitude Classification Static AOW near riprap area on the east side of Ditch system the southeast corner of active ash basin.Any draining areas Monitoring at S-08 35.38051 -78.068532 flow collects in channel and flows south toward north and east WS-IV; NSW location S-09 See S 09 S-09. No flow observed in recent observations. of active ash basin Monitoring location just before confluence of Ditch system Monitoring at draining areas Arsenic 400 µg/L channel on east side of active ash basin location S-09 S-09** 35.379492 -78.067718 conveying flow from upstream sites and the north and east WS-IV; NSW prior to entering Hardness 500 mg/L of active ash TDS 800 mg/L Neuse River. Not a seep. Neuse River basin Instream Stagnant, ponded water inland from river terrace N/A—2B Standards S-18 35.379222 -78.101206 below east side of inactive ash basin. Neuse River WS-IV; NSW monitoring of the Apply Neuse River Stagnant, ponded water inland from river terrace S-19* 35.38179 -78.097649 below northeast side of inactive ash basin. From Neuse River WS-IV; NSW N/A—Seep N/A—Seep sampling—No CCR impacts. Dispositioned Dispositioned Seep near well CMW-10, along the south side of S-20** 35.382406 -78.082051 active ash basin. Location has been repaired to Neuse River WS-IV; NSW N/A—Seep N/A—Seep eliminate seep. Dispositioned Dispositioned ** Stagnant seep along south side of active ash N/A—Seep N/A—Seep S-21 35.382151 -78.080376 basin.Any flow reinfiltrates prior to reaching Neuse River WS-IV; NSW Dispositioned Dispositioned surface water. Seep along south side of active ash basin. Flows Instream N/A—2B Standards S-22 35.381466 -78.077819 toward Neuse River. Neuse River WS-IV; NSW monitoring of the Apply Neuse River Seep along south side of active ash basin. Flows Instream N/A—2B Standards S-23 35.381175 -78.077136 toward Neuse River. Neuse River WS-IV; NSW monitoring of the Apply Neuse River *Location previously investigated as a seep. Monitoring has not indicated the presence of coal combustion residuals. **Seep dispositioned via repair and/or non-flowing condition to potentially reach WOTUS,or other,as noted. Monitoring shall be conducted at the approximate locations indicated on the attached site map. All monitoring shall be conducted per the requirements found in Attachment B of this Order. Attachment A S18-006 Duke Energy Progress, LLC— H. F. Lee Energy Complex, p.4 Approximate Receiving Seep ID Location Coordinates Description Receiving Waterbody SOC Monitoring Interim Action Levels Number Waterbody Latitude Longitude Classification Instream S-24 35.381063 -78.076431 Seep along south side of active ash basin. Flows Neuse River WS-IV; NSW monitoring of the N/A—2B Standards toward Neuse River. Apply Neuse River Seep along south side of active ash basin. Flows Instream N/A—2B Standards S-25 35.380922 -78.076001 toward Neuse River. Neuse River WS-IV; NSW monitoring of the Apply Neuse River Seep within a small drainage channel for ponded Instream S-26 35.38164 -78.078322 water within the river bank below south side of Neuse River WS-IV; NSW monitoring of the N/A—2B Standards active ash basin. Flows toward Neuse River. Neuse River Apply Low volume seep to small channel north of Ditch system draining areas S-27 35.385848 -78.075999 active ash basin at the toe of the dike. Flows north and WS-IV; NSW Monitoring at See S-03A west,then south,toward confluence with Neuse location S-03A River at sampling site S-03A. west of active ash basin Low volume seep to small channel north of Ditch system draining areas S-28 35.385133 -78.078197 active ash basin at the toe of the dike. Flows north and WS-IV; NSW Monitoring at See S-03A west,then south,toward confluence with Neuse west of active location S-03A River at sampling site S-03A. ash basin Seep to Halfmile Branch on southwest side of Halfmile Instream See Halfmile Branch S-29 35.37862 -78.10593 retired ash basin#2. Branch WS-IV; NSW monitoring of Instream Monitoring Halfmile Branch (p.8) *Location previously investigated as a seep. Monitoring has not indicated the presence of coal combustion residuals. **Seep dispositioned via repair and/or non-flowing condition to potentially reach WOTUS,or other,as noted. Monitoring shall be conducted at the approximate locations indicated on the attached site map. All monitoring shall be conducted per the requirements found in Attachment B of this Order. Attachment A 518-006 Duke Energy Progress, LLC—H. F. Lee Energy Complex, p.5 Approximate Receiving Seep ID Location Coordinates Description Receiving Waterbody SOC Monitoring Interim Action Levels Number Waterbody Latitude Longitude Classification Seep from the berm surrounding the cooling Instream N/A—26 Standards CPS-01 35.37924 -78.07377 pond. Not a seep emanating from the active ash Neuse River WS-IV; NSW monitoring of the basin. Neuse River Apply Seep from the berm surrounding the cooling Instream CPS-02 35.37901 -78.07298 pond. Not a seep emanating from the active ash Neuse River WS-IV; NSW monitoring of the N/A—2B Standards basin. Neuse River Apply Seep from the berm surrounding the cooling Instream CPS-03 35.37895 -78.06270 pond. Not a seep emanating from the active ash Neuse River WS-IV;NSW monitoring of the N/A—26 Standards basin. Neuse River Apply Seep from the berm surrounding the cooling Instream CPS-04 35.37902 -78.06707 pond. Not a seep emanating from the active ash Neuse River WS-IV; NSW monitoring of the N/A—2B Standards basin. Neuse River Apply Seep from the berm surrounding the cooling Instream N/A—2B Standards CPS-05 35.37998 -78.06574 pond. Not a seep emanating from the active ash Neuse River WS-IV; NSW monitoring of the basin. Neuse River Apply Seep from the berm surrounding the cooling Instream N/A—26 Standards CPS-06 35.37179 -78.06642 pond. Not a seep emanating from the active ash Neuse River WS-IV; NSW monitoring of the basin. Neuse River Apply Seep from the berm surrounding the cooling Instream N/A—26 Standards CPS-07 35.37177 -78.06661 pond. Not a seep emanating from the active ash Neuse River WS-IV; NSW monitoring of the basin. Neuse River Apply *Location previously investigated as a seep. Monitoring has not indicated the presence of coal combustion residuals. **Seep dispositioned via repair and/or non-flowing condition to potentially reach WOTUS,or other,as noted. Monitoring shall be conducted at the approximate locations indicated on the attached site map. All monitoring shall be conducted per the requirements found in Attachment B of this Order. Attachment A S18-006 Duke Energy Progress, LLC— H. F. Lee Energy Complex, p.6 Approximate Receiving Seep ID Location Coordinates Description Receiving Waterbody SOC Monitoring Interim Action Levels Number Waterbody Classification Latitude Longitude Seep from the berm surrounding the cooling Instream CPS-08 35.37711 -78.06780 pond. Not a seep emanating from the active ash Neuse River WS-IV;NSW monitoring of the N/A—2B Standards basin. Neuse River Apply Seep from the berm surrounding the cooling Instream N/A—2B Standards CPS-09 35.36922 -78.07880 pond. Not a seep emanating from the active ash Neuse River WS-IV; NSW monitoring of the basin. Neuse River Apply Seep from the berm surrounding the cooling Instream CPS-10 35.36840 -78.08125 pond. Not a seep emanating from the active ash Neuse River WS-IV;NSW monitoring of the N/A—26 Standards basin. Neuse River Apply Seep from the berm surrounding the cooling Instream CPS-11 35.36829 -78.08141 pond. Not a seep emanating from the active ash Neuse River WS-IV; NSW monitoring of the N/A—2B Standards basin. Neuse River Apply Seep from the berm surrounding the cooling Instream CPS-12 35.36816 -78.08156 pond. Not a seep emanating from the active ash Neuse River WS-IV; NSW monitoring of the N/A—2B Standards basin. Neuse River Apply Seep from the berm surrounding the cooling Instream CPS-13 35.37972 -78.07540 pond. Not a seep emanating from the active ash Neuse River WS-IV;NSW monitoring of the N/A—2B Standards basin. Neuse River Apply i Seep from the berm surrounding the cooling Instream CPS-14 35.37963 -78.07527 pond. Not a seep emanating from the active ash Neuse River WS-IV;NSW monitoring of the N/A—2B Standards basin. Neuse River Apply *Location previously investigated as a seep. Monitoring has not indicated the presence of coal combustion residuals. **Seep dispositioned via repair and/or non-flowing condition to potentially reach WOTUS,or other,as noted. Monitoring shall be conducted at the approximate locations indicated on the attached site map. All monitoring shall be conducted per the requirements found in Attachment B of this Order. Attachment A 518-006 Duke Energy Progress, LLC— H. F. Lee Energy Complex, p.7 Approximate Seep ID Location Coordinates Receiving Receiving Number Description Waterbody Waterbody SOC Monitoring Interim Action Levels Latitude Longitude Classification Seep from the berm surrounding the cooling Instream N/A—2B Standards CPS-15 35.37962 -78.07460 pond. Not a seep emanating from the active ash Neuse River WS-IV;NSW monitoring of the basin. Neuse River Apply Seep from the berm surrounding the cooling Instream N/A—2B Standards CPS-16 35.37942 -78.07423 pond. Not a seep emanating from the active ash Neuse River WS-IV; NSW monitoring of the basin. Neuse River Apply Seep from the berm surrounding the cooling Instream CPS-17 35.37465 -78.06165 pond. Not a seep emanating from the active ash Neuse River WS-IV; NSW monitoring of the N/A—2B Standards basin. Neuse River Apply Seep from the berm surrounding the cooling Instream N/A—2B Standards CPS-18 35.37195 -78.06605 pond. Not a seep emanating from the active ash Neuse River WS-IV; NSW monitoring of the basin. Neuse River Apply Seep from the berm surrounding the cooling Instream N/A—2B Standards CPS-19 35.37192 -78.06625 pond. Not a seep emanating from the active ash Neuse River WS-IV; NSW monitoring of the basin. Neuse River Apply Seep from the berm surrounding the cooling Instream N/A—26 Standards CPS-20 35.37202 -78.06630 pond. Not a seep emanating from the active ash Neuse River WS-IV; NSW monitoring of the basin. Neuse River Apply Seep from the berm surrounding the cooling Instream N/A—26 Standards CPS-21 35.36983 -78.07580 pond. Not a seep emanating from the active ash Neuse River WS-IV; NSW monitoring of the basin. Neuse River Apply *Location previously investigated as a seep. Monitoring has not indicated the presence of coal combustion residuals. **Seep dispositioned via repair and/or non-flowing condition to potentially reach WOTUS,or other,as noted. Monitoring shall be conducted at the approximate locations indicated on the attached site map. All monitoring shall be conducted per the requirements found in Attachment B of this Order. Attachment A S 18-006 Duke Energy Progress, LLC—H. F. Lee Energy Complex, p.8 Instream Monitoring Description Receiving Waterbody Receiving Waterbody SOC Monitoring Interim Action Levels Classification Instream Monitoring to Upstream& Downstream Monitoring of the N/A—2B Standards evaluate potential impacts Neuse River WS-IV; NSW Neuse River Apply from seeps Instream Monitoring to Upstream&Downstream Monitoring of Mercury 0.02 µg/L evaluate potential impacts Halfmile Branch WS-IV; NSW Halfmile Branch Selenium 30 µg/L from seeps *Location previously investigated as a seep. Monitoring has not indicated the presence of coal combustion residuals. **Seep dispositioned via repair and/or non-flowing condition to potentially reach WOTUS,or other,as noted. Monitoring shall be conducted at the approximate locations indicated on the attached site map. All monitoring shall be conducted per the requirements found in Attachment B of this Order. SOC S18-006 Duke Energy Progress, LLC—H. F. Lee Plant Attachment B Monitoring Requirements The following represents the parameters to be analyzed and reported at all monitoring locations designated within this Special Order. Parameter Reporting Units Monitoring Frequency TSS mg/L Annually Oil and Grease mg/L Annually pH Standard Units(s. u.) Quarterly Fluoride pg/L Quarterly Total Mercury ng/L Quarterly Total Barium pg/L Quarterly Total Zinc pg/L Quarterly Total Arsenic pg/L Quarterly Total Boron pg/L Quarterly Total Cadmium pg/L Quarterly Total Chromium pg/L Quarterly Total Copper pg/L Quarterly Total Thallium pg/L Quarterly Total Lead pg/L Quarterly Total Nickel pg/L Quarterly Total Selenium pg/L Quarterly Nitrate/Nitrite as N mg/L Quarterly Bromides mg/L Quarterly Sulfates mg/L Quarterly Chlorides mg/L Quarterly TDS mg/L Quarterly Total Hardness mg/L Quarterly Temperature °C Quarterly Conductivity, pmho/cm pmho/cm Quarterly Analyses of all monitoring conducted per the terms of this SOC shall conform to the requirements of 15A NCAC 2B .0505(e)(4)and(5); i.e.,standard methods and certified laboratories shall be used. H. F. Lee Energy Complex — Water Quality Monitoring .� v. N „:4'a, Ek ' , .alb ' 4#4 Ash W * ;ACT. S-03A Basin N e, se 4, Riker S-os • 0,5 ir . w'. '• Cooling Pond ;` 1, , a ,r — w $. - c Y # 1. . `y, - Upstream: Halfmile Branch & Neuse River * Stream Monitoring Downstream: Halfmile Branch & Neuse River