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NC0005363_Cooling Pond Work Plan_20160818
47 synTerra PROPOSED COOLING POND ASSESSMENT WORK PLAN FOR W.H. WEATHERSPOON POWER PLANT 491 POWER PLANT ROAD LUMBERTON, NORTH CAROLINA 28358 NPDES PERMIT ##NC0005363 N 34.590664 / W -78.970187 PREPARED FOR DUKE ENERGY PROGRESSO INC. 410 S. WILMINGTON STREET/NC14 RALEIGH,, NORTH CAROLINA 27601 (� DUKE ENERGY PROGRESS SUBMITTED: AUGUST 2016 PREPARED BY SYNTERRA 148 RIVER STREET GREENVILLEj, SOUTH CAROLINA (864) 421-9999 INNOVATE 148 River Street, Suite 220 Greenville, SC 29601 (864)421-9999 Proposed Cooling Pond Assessment Work Plan August 2016 W.H. Weatherspoon Power Plant SynTerra TABLE OF CONTENTS SECTION PAGE ExecutiveSummary.............................................................................................................. ES -1 1.0 Introduction..................................................................................................................1-1 2.0 Site Information........................................................................................................... 2-1 2.1 Plant Description..................................................................................................... 2-1 2.2 Ash Basin Description............................................................................................ 2-1 2.3 Cooling Pond Description..................................................................................... 2-2 2.4 Regulatory Requirements...................................................................................... 2-2 2.5 Receptor Information............................................................................................. 2-3 2.6 Risk Assessment......................................................................................................2-4 3.0 Regional Geology and Hydrogeology..................................................................... 3-1 3.1 Regional Geology....................................................................................................3-1 3.2 Regional Hydrogeology......................................................................................... 3-1 4.0 Cooling Pond Conceptual Model.............................................................................4-1 4.1 Physical Site Characteristics.................................................................................. 4-1 4.2 Source Characteristics............................................................................................ 4-1 4.3 Site Hydrogeology.................................................................................................. 4-1 4.4 Cooling Pond Construction................................................................................... 4-2 4.5 Cooling Pond Hydraulics...................................................................................... 4-3 4.5.1 Cooling Pond Inflows.......................................................................................4-3 4.5.1.1 Predominantly Non -Anthropogenic Inflows.......................................4-4 4.5.1.2 Anthropogenic Inflows............................................................................ 4-4 4.5.2 Cooling Pond Outflows.................................................................................... 4-5 4.5.3 Hydraulic Residence Time...............................................................................4-6 4.6 Chemical Constituents Introduced Into The Cooling Pond by AnthropogenicSources.......................................................................................... 4-7 4.7 Potential Mechanisms For Coal Ash Transport To Cooling Pond ................... 4-7 4.8 Cooling Pond Analytical Data.............................................................................. 4-8 5.0 Cooling Pond Assessment Work Plan..................................................................... 5-1 5.1 Groundwater Monitoring Well Installation........................................................5-1 5.1.1 Well Completion............................................................................................... 5-1 5.1.2 Well Development............................................................................................ 5-2 Page i P:\Duke Energy Progress.1026\109. Weatherspoon Ash Basin GW Assessment Plan\CSA Cooling Pond Assessment\Cooling Pond Work Plan\Weatherspoon Cooling Pond Work Plan 18 August 2016.docx Proposed Cooling Pond Assessment Work Plan August 2016 W.H. Weatherspoon Power Plant SynTerra TABLE OF CONTENTS SECTION PAGE 5.2 Wastewater and Surface Water Samples.............................................................5-2 5.2.1 Grab Water Samples......................................................................................... 5-2 5.2.2 Groundwater Samples......................................................................................5-3 5.3 Sediment Samples................................................................................................... 5-4 5.3.1 Sediment Core Samples.................................................................................... 5-4 5.3.2 Sediment Grab Samples................................................................................... 5-5 5.4 Field and Sampling Quality Assurance/Quality Control Procedures ............. 5-6 5.4.1 Field Logbooks.................................................................................................. 5-6 5.4.2 Field Data Records............................................................................................ 5-7 5.4.3 Sample Identification........................................................................................ 5-7 5.4.4 Field Equipment Calibration........................................................................... 5-7 5.4.5 Sample Custody Requirements....................................................................... 5-8 5.4.6 Quality Assurance and Quality Control Samples ........................................ 5-8 5.4.7 Decontamination Procedures.......................................................................... 5-9 6.0 Modeling of Groundwater Impacts to Surface Water .......................................... 6-1 7.0 Cooling Pond Assessment Report............................................................................ 7-1 8.0 Proposed Schedule.......................................................................................................8-1 9.0 References......................................................................................................................9-1 LIST OF FIGURES Figure ES -1 Revised Waste Boundaries and Proposed Compliance Boundaries Figure ES -2 Cooling Pond Assessment Sample Locations Figure 1-1 Site Location Map Figure 1-2 Revised Waste Boundaries and Proposed Compliance Boundaries Figure 2-1 1951 Aerial Photograph Figure 2-2 1957 USGS Topographic Map Figure 2-3 Cooling Pond Outfalls — 2009 NPDES Permit NC0005363 Renewal Application Figure 2-4 Cooling Pond Outfall — 2014 NPDES Permit NC0005363 Renewal Application Page ii P:\Duke Energy Progress.1026\109. Weatherspoon Ash Basin GW Assessment Plan\CSA Cooling Pond Assessment\Cooling Pond Work Plan\Weatherspoon Cooling Pond Work Plan 18 August 2016.docx Proposed Cooling Pond Assessment Work Plan August 2016 W.H. Weatherspoon Power Plant SynTerra LIST OF FIGURES Figure 4-1 Water Level Map - January 2016 Surficial Groundwater Figure 4-2 Cooling Pond Inflows and Outflows - 2009 NPDES Permit NC0005363 Renewal Application Figure 4-3 Flows, Sources of Pollution, and Treatment Technologies - 2009 NPDES Permit NC0005363 Renewal Application Figure 4-4 Cooling Pond Inflows and Outflows - 2014 NPDES Permit NC0005363 Renewal Application Figure 4-5 Flows, Sources of Pollution, and Treatment Technologies - 2014 NPDES Permit NC0005363 Renewal Application Figure 4-6 Potential Discharges Not Covered by Analysis - 2009 NPDES Permit NC0005363 Renewal Application Figure 4-7 Potential Discharges Not Covered by Analysis - 2014 NPDES Permit NC0005363 Renewal Application Figure 4-8 1958 Aerial Photograph Figure 4-9 Plant Utility Piping Survey of Ash Basin Figure 5-1 Cooling Pond Assessment Sample Locations LIST OF TABLES Table 2-1 NPDES Compliance Well Groundwater Monitoring Requirements Table 5-1 Water Sample Parameters and Analytical Methods Table 5-2 Sediment Sample Parameters and Analytical Methods LIST OF APPENDICES Appendix A NCDWR Request for Cooling Pond Assessment Appendix B NPDES Permit NC0005363 Appendix C 2009 NPDES Permit NC0005363 Renewal Application Appendix D 2014 NPDES Permit NC0005363 Renewal Application Appendix E 2015 Water Use Report Page iii P:\Duke Energy Progress.1026\109. Weatherspoon Ash Basin GW Assessment Plan\CSA Cooling Pond Assessment\Cooling Pond Work Plan\Weatherspoon Cooling Pond Work Plan 18 August 2016.docx Proposed Cooling Pond Assessment Work Plan August 2016 W.H. Weatherspoon Power Plant SynTerra ACRONYMS BOD biochemical oxygen demand CAP Corrective Action Plan CCR coal combustion residuals COD chemical oxygen demand CPCM cooling pond conceptual model CSA Comprehensive Site Assessment DWR Division of Water Resources FDR field data record IMAC Interim Maximum Allowable Concentrations MGY million gallons per year msl mean sea level NCDEQ North Carolina Department of Environmental Quality NPDES National Pollutant Discharge Elimination System NTUs Nephelometric Turbidity Units ORP oxidation-reduction potential PLM polarized light microscopy QA/QC quality assurance/quality control SCM site conceptual model SWAP Source Water Assessment Program TDS total dissolved solids TOC total organic carbon TSS total suspended solids USGS United States Geological Survey Page iv P:\Duke Energy Progress.1026\109. Weatherspoon Ash Basin GW Assessment Plan\CSA Cooling Pond Assessment\Cooling Pond Work Plan\Weatherspoon Cooling Pond Work Plan 18 August 2016.docx Proposed Cooling Pond Assessment Work Plan August 2016 W.H. Weatherspoon Power Plant SynTerra EXECUTIVE SUMMARY Duke Energy Progress, LLC (Duke Energy), owns and operates the W.H. Weatherspoon Power Plant (Weatherspoon Plant), located near Lumberton, in Robeson County, North Carolina. Coal ash residue from the coal combustion process was placed in the Plant's ash basin which is permitted by the North Carolina Department of Environmental Quality (NCDEQ) Division of Water Resources (DWR) under the National Pollutant Discharge Elimination System (NPDES). DWR requests that Duke Energy provide data and conduct additional site assessment to characterize the distribution of coal combustion residuals (CCR) at potential coal ash disposal areas including the Weatherspoon Plant cooling pond (Appendix A). The cooling pond assessment will supplement the on-going Weatherspoon Plant Comprehensive Site Assessment (CSA). Similarly, this Proposed Cooling Pond Assessment Work Plan is a standalone update to the Weatherspoon Plant CSA Groundwater Assessment Work Plan (SynTerra, December 2014). DWR also requests that Duke Energy provide updated facility site maps with the revised waste boundaries and proposed compliance boundaries established according to 15A NCAC 02L Section .0107 (Appendix A). The updated facility site map with the revised waste boundaries and proposed compliance boundaries is presented in Figure ES -1. The content of this work plan includes the following: 07 Descriptions of the Weatherspoon Plant, the coal ash basin, and the cooling pond; 161, NPDES permit NC0005363 (Appendix B) and highlights of pertinent permit requirements; EP A summary of receptor information presented in the CSA Report and the baseline human health and ecological risk assessment presented in Corrective Action Plan (CAP) Part 1 Report; 41, A description of the regional geology and hydrology; and 101 An interim cooling pond conceptual model that details cooling pond inflows, outflows, hydraulics, potential chemical constituents introduced into the cooling pond, and potential mechanisms for coal ash and coal transport to the cooling pond. Page ES -1 P:\Duke Energy Progress.1026\109. Weatherspoon Ash Basin GW Assessment Plan\CSA Cooling Pond Assessment\Cooling Pond Work Plan\Weatherspoon Cooling Pond Work Plan 18 August 2016.docx Proposed Cooling Pond Assessment Work Plan August 2016 W.H. Weatherspoon Power Plant SynTerra This work plan includes the following tasks: 01 Collect twenty three water samples from the locations indicated on Figure ES -2 for inorganic analysis by the Duke Energy Analytical Laboratory; 0' Collect thirty-two sediment core samples from the locations indicated on Figure ES -2 for polarized light microscopy (PLM) analysis to determine the presence or absence of coal ash. PLM analysis will be conducted by a subcontractor laboratory; ,6' Collect thirty-two sediment grab samples from the locations indicated on Figure ES -2 for inorganic analysis by the Duke Energy Analytical Laboratory; 161, Install a total of six groundwater monitoring wells at three locations on the cooling pond dike (Figure ES -2). One groundwater well at each of the three well pair locations will be screened in the shallow surficial (Coastal Plain surficial deposits) aquifer and the other groundwater well will be screened in the lower surficial (Yorktown Formation) aquifer; and 01 Collect groundwater samples from the six proposed groundwater wells and three existing piezometers installed in the cooling pond dike (Figure ES -2) for inorganic analysis by the Duke Energy Analytical Laboratory. Water and sediment samples collected from the cooling pond and the onsite pond (background location) will be collected from a boat. Surface water and sediment samples collected from the Lumber River and Jacob Creek will be collected from the shoreline. Sediment cores of approximately 1 foot in length will be collected manually using a core retrieval device. Mechanical core collection (e.g., Geoprobeo from barge) may be warranted if coal ash is determined to be present at depths beyond the capability of manual coring devices. PLM analysis conducted on the sediment cores will determine the percent composition that is comprised of coal ash. Results of PLM analyses will be used to map the distribution of coal ash, if present, in the cooling pond. Wastewater, surface water, groundwater, and sediment grab samples will be submitted to the Duke Energy analytical laboratory for inorganic analysis. Analytical results for samples collected from the cooling pond, Lumber River, Jacob Creek, unnamed onsite pond, groundwater will be compared to determine if discernable differences in water quality exist across waterbodies. Page ES -2 P:\Duke Energy Progress.1026\109. Weatherspoon Ash Basin GW Assessment Plan\CSA Cooling Pond Assessment\Cooling Pond Work Plan\Weatherspoon Cooling Pond Work Plan 18 August 2016.docx Proposed Cooling Pond Assessment Work Plan August 2016 W.H. Weatherspoon Power Plant SynTerra The proposed assessment activities will be conducted in general conformance with the CSA Work Plan, Rev. 1, December 2014. Fieldwork for the cooling pond assessment will commence within approximately 45 days following NCDEQ final approval of this work plan. The information obtained through this Work Plan will be used to prepare a Comprehensive Site Assessment (CSA) Supplemental Report 2 that presents field observations, analytical data, revisions to the cooling pond conceptual model, and conclusions regarding the presence or absence of CCR in the cooling pond. The CSA Supplemental Report 2 will be submitted to NCDEQ approximately 60 days following receipt and validation of all analytical data. Page ES -3 P:\Duke Energy Progress.1026\109. Weatherspoon Ash Basin GW Assessment Plan\CSA Cooling Pond Assessment\Cooling Pond Work Plan\Weatherspoon Cooling Pond Work Plan 18 August 2016.docx Proposed Cooling Pond Assessment Work Plan August 2016 W.H. Weatherspoon Power Plant SynTerra 1.0 INTRODUCTION Duke Energy Progress, LLC (Duke Energy), owns and operates the W.H. Weatherspoon Power Plant (Weatherspoon Plant), located near Lumberton, in Robeson County, North Carolina (Figure 1-1). The Weatherspoon Plant became operational in 1949 with a Babcock & Wilcox boiler (Unit 1). Two additional coal-fired electricity -generating units (Units 2 and 3) were added in 1950 and 1952 (E-mail correspondence, July 2016). Four oil and natural gas fueled combustion turbines were added in the 1970s. The coal-fired units were retired in October 2011. The combustion turbines continue to generate electricity at the Weatherspoon Plant. The coal ash residue from the coal combustion process was placed in the Plant's coal ash basin. The discharge from the ash basin to the Lumber River via the cooling pond is permitted by the North Carolina Department of Environmental Quality (NCDEQ) Division of Water Resources (DWR) under the National Pollutant Discharge Elimination System (NPDES). DWR requests that Duke Energy provide data and conduct additional site assessment as needed to characterize the distribution of coal combustion residuals (CCR) at confirmed and potential coal ash disposal areas including the Weatherspoon Plant cooling pond (Appendix A). The cooling pond assessment will supplement the on- going Weatherspoon Plant Comprehensive Site Assessment (CSA). Similarly, this Cooling Pond Assessment Work Plan is a standalone update to the Weatherspoon Plant CSA Groundwater Assessment Work Plan (SynTerra, December 2014). The information obtained following execution of this Work Plan will be presented in a CSA supplemental report. DWR also requests that Duke Energy provide updated facility site maps with the revised waste boundaries and proposed compliance boundaries established according to 15A NCAC 02L Section .0107 (Appendix A). The updated facility site map with the revised waste boundaries and proposed compliance boundaries is presented in Figure 1-2. The compliance boundaries are established 500 feet from the coal ash basin waste boundary and 500 feet from the Weatherspoon Plant NPDES waste treatment unit (e.g., cooling pond) or the property boundary if the property boundary is within 500 feet of the coal ash basin waste boundary or cooling pond boundary. Page 1-1 P:\Duke Energy Progress.1026\109. Weatherspoon Ash Basin GW Assessment Plan\CSA Cooling Pond Assessment\Cooling Pond Work Plan\Weatherspoon Cooling Pond Work Plan 18 August 2016.docx Proposed Cooling Pond Assessment Work Plan August 2016 W.H. Weatherspoon Power Plant SynTerra 2.0 SITE INFORMATION 2.1 Plant Description The Weatherspoon Plant is a former coal-fired electricity -generating facility located in Robeson County, North Carolina, near the City of Lumberton (Figure 1-1). The Weatherspoon Plant started operations in 1949 with a Babcock & Wilcox boiler. Two additional coal-fired units were added in the 1950s. Four oil and natural gas fueled combustion turbines were added in the 1970s. All of the coal-fired units were retired as of October 2011. The four oil and natural gas fueled units continue to operate to meet peak demand. The facility is located southeast of Lumberton on the east side of North Carolina Highway 72. The topography around the property generally slopes downward toward the Lumber River. The Weatherspoon Plant utilizes an approximate 225 -acre cooling pond located adjacent to the Lumber River. Coal ash generated by the coal-fired electricity -generating units was placed in the Plant's 55 -acre ash basin located north of the cooling pond and northeast of the Plant. The Plant, cooling pond, and ash basin are located on the east side of the Lumber River (Figure 1-2). 2.2 Ash Basin Description The Weatherspoon Plant's only coal ash basin contains approximately 1,700,000 tons of ash (Duke Energy, 2014). Ash is no longer generated at the site and Duke Energy is in the process of evaluating closure options for the ash basin. The coal ash basin 500 foot compliance boundary is shown on Figure 1-2. Circa 1949 to 1955, ash was sluiced to a low area that was eventually encompassed by the existing ash basin (Figure 2-1). The ash basin was constructed in phases using a combination of basin excavation and earthen dike construction beginning in 1955. Additional excavation and earthen dikes were constructed to the south of the original basin as the Plant expanded and ash volume increased. The last of the perimeter earthen dikes was constructed in 1979. The basin was also expanded vertically in the northern portion of the basin by the use of interior dikes constructed of ash. Interior ash dike construction began in 2001 (S&ME, 2012). Ash historically generated from coal combustion was transferred to the ash basin via sluicing. No other types of waste are believed to have been placed in the ash basin other than permitted infrequent low volume wastes. The NPDES permitted discharge from the ash basin to the cooling pond occurred at the northeast corner of the cooling pond. According to Duke, ash has not been stored or placed elsewhere on or near the site other than possible de minimis quantities at unknown locations. Page 2-1 P:\Duke Energy Progress.1026\109. Weatherspoon Ash Basin GW Assessment Plan\CSA Cooling Pond Assessment\Cooling Pond Work Plan\Weatherspoon Cooling Pond Work Plan 18 August 2016.docx Proposed Cooling Pond Assessment Work Plan August 2016 W.H. Weatherspoon Power Plant SynTerra 2.3 Cooling Pond Description The cooling pond did not exist in 1949 when the Weatherspoon Plant became operational. An aerial photograph taken in 1951 shows that an engineered channel was constructed that connected two bends in the meandering Lumber River southwest of the Weatherspoon Plant (Figure 2-1). The natural Lumber River channel appears to have been severed by an engineered dam where the river water intake to the cooling pond currently exists. The Lumber River on the north side of the engineered dam likely served as the cooling water intake and the Lumber River channel south of the engineered dam likely served as the heat sink or cooling water discharge. The area where the cooling pond is now located appears to have been either mature undeveloped woodlands or wetlands. It also appears that Jacob Creek channel flowed northeast to southwest through the northeast arm of the current cooling pond and discharged to the Lumber River near the southern most portion of the current cooling pond (Figure 2-1). A United States Geological Survey (USGS) topographic map recorded in 1957 identifies the cooling pond as the "Plant Cooling Lake" (Figure 2-2). Therefore, the cooling pond appears to have been constructed between 1951 and 1957. 2.4 Regulatory Requirements Wastewater discharge to surface waters of the state are regulated by the NCDEQ NPDES program. The Weatherspoon Plant is permitted to discharge wastewater from the cooling pond to the Lumber River under NPDES Permit NC0005363 (Appendix B). Two outfalls, 001 and 002, are identified in the 2009 NPDES permit NC0005363 renewal application (Figure 2-3; Appendix C). The permit authorizes the discharge of recirculated cooling water, ash sluice water, domestic wastewater, chemical metal cleaning water, and categorical low volume wastewater from the cooling pond via cooling pond Outfall 001 to the Lumber River under severe weather conditions and pond maintenance in accordance with effluent limitations, monitoring requirements, and other conditions set forth in the permit. In addition, non -contact cooling water from heat exchanger units was discharged to the Lumber River via Outfall 002. However, the discharge of non -contact cooling water (Outfall 002) ceased following the retirement of plant coal-fired units in October 2011. Consequently, the Outfall 002 discharge structure was capped and Outfall 001 is the only outfall listed in the 2014 NPDES permit NC0005363 renewal application (Figure 2-4; Appendix D). Cooling pond discharges to the Lumber River via Outfall 001 will only occur: ,67 When a major storm is expected and additional freeboard is needed to prevent overtopping of pond dikes; or Page 2-2 P:\Duke Energy Progress.1026\109. Weatherspoon Ash Basin GW Assessment Plan\CSA Cooling Pond Assessment\Cooling Pond Work Plan\Weatherspoon Cooling Pond Work Plan 18 August 2016.docx Proposed Cooling Pond Assessment Work Plan August 2016 W.H. Weatherspoon Power Plant SynTerra 41P When a release is necessary for maintenance purposes. The last known discharge via Outfall 001 occurred in September 1999 (Appendix D; E- mail correspondence, July 2016). The NPDES permitting program requires that permits be renewed every five years. The existing NPDES permit renewal for the Weatherspoon Plant became effective on January 1, 2010 and expired on July 31, 2014. That permit has been administratively continued due to Duke Energy's timely submittal of a renewal application submitted on January 28, 2014 (E-mail correspondence, August 2016). NPDES permit NC0005363 requires groundwater monitoring at the ash basin compliance boundary. The compliance boundary for groundwater quality at the Weatherspoon Plant ash basin is defined in accordance with Title15A NCAC 02L .0107(a) as being established at either 500 feet from the waste boundary or at the property boundary, whichever is closer to the waste. The location of the ash basin compliance monitoring wells, the coal ash basin waste boundary, and the coal ash basin compliance boundary are shown on Figure 1-2. Currently, Duke Energy conducts routine compliance boundary monitoring during March, June, and October each year for the parameters listed in Table 2-1. At the direction of NCDEQ, Duke has adjusted the parameter list to support the CSA process as of June 2015. The most current NPDES groundwater monitoring data is presented in the CSA Supplement 1 (SynTerra, July 2016). 2.5 Receptor Information SynTerra has conducted a receptor survey to identify potential receptors including public and private water supply wells (including irrigation wells and unused or abandoned wells) and surface water features within a 0.5 -mile radius of the Weatherspoon Plant coal ash basin compliance boundary. SynTerra presented the results of the receptor survey in two separate reports. The first report included the results of a review of publicly available data from NCDEQ, Department of Environmental Health, NC OneMap GeoSpatial Portal, DWR Source Water Assessment Program (SWAP) online database, county geographic information system, Environmental Data Resources, Inc. Records Review, the USGS National Hydrography Dataset, as well as a vehicular survey along public roads located within 0.5 mile radius of the coal ash basin compliance boundary (SynTerra, September 2014). The second report supplemented the initial report with additional information obtained from questionnaires sent to owners of property within the 0.5 mile radius of the coal ash Page 2-3 P:\Duke Energy Progress.1026\109. Weatherspoon Ash Basin GW Assessment Plan\CSA Cooling Pond Assessment\Cooling Pond Work Plan\Weatherspoon Cooling Pond Work Plan 18 August 2016.docx Proposed Cooling Pond Assessment Work Plan August 2016 W.H. Weatherspoon Power Plant SynTerra basin compliance boundary (SynTerra, November 2014). The report included a sufficiently scaled map showing the ash basin location, the facility property boundary, the coal ash basin compliance boundary, all monitoring wells, and the approximate location of identified water supply wells. A table presented available information about identified wells including the owner's name, address of well location with parcel number, construction and usage data, and the approximate distance from the coal ash basin compliance boundary. The receptor survey within 0.5 mile radius of the coal ash basin compliance boundary was updated on July 28, 2016 via vehicle survey on public roads within the 0.5 mile radius area. No new supply wells were identified. A report of this receptor survey findings is pending. NCDEQ has managed groundwater sample collection from two nearby water supply wells. The groundwater samples were collected from wells W-02 and W-06 in March 2015 and April 2015, respectively. Analytical results indicate that nearby water supply wells sampled by DEQ have not been impacted by migration of coal ash constituents from the coal ash basin (SynTerra, July 2016). Details of water supply wells within 0.5 mile radius of the coal ash basin compliance boundary is presented in Appendix B of the CSA Report (SynTerra, August 2015). 2.6 Risk Assessment Screening level human health and ecological risk assessments were conducted during the CSA and the results are presented in Section 12.0 of the CSA Report (SynTerra, August 2015). Human health and ecological baseline risk assessments were subsequently conducted and the results were presented in Section 5.0 of the Corrective Action Plan (CAP) Part 2. The only on-site scenario where coal ash constituents of potential concern potentially posed unacceptable risk to human health was the adult commercial/industrial worker exposed to arsenic in seep soil. Exposure to on-site Jacob Creek surface water and sediment under the on-site adolescent trespasser scenario did not pose unacceptable non -carcinogenic or carcinogenic human health risk (SynTerra, February 2016). The cooling pond is a wastewater treatment unit. Consequently, human exposure to cooling pond wastewater, sediment, or fish were not considered in the baseline risk assessment. The only off-site scenario where coal ash constituents posed potentially unacceptable risk to human health involved adult and child consumption of fish caught from the Lumber River under the subsistence fisher scenario. Antimony in fish tissue derived from fish uptake and bioconcentration modeling resulted in a potentially unacceptable non -carcinogenic health risk to children under this scenario. However, antimony in Page 2-4 P:\Duke Energy Progress.1026\109. Weatherspoon Ash Basin GW Assessment Plan\CSA Cooling Pond Assessment\Cooling Pond Work Plan\Weatherspoon Cooling Pond Work Plan 18 August 2016.docx Proposed Cooling Pond Assessment Work Plan August 2016 W.H. Weatherspoon Power Plant SynTerra Lumber River surface water was detected at a higher concentration in the surface water sample collected upstream relative to the Weatherspoon Plant. Consequently, the potential non -carcinogenic health risk to children posed by antimony in Lumber River surface water under the subsistence fisher risk scenario is not attributable to the Weatherspoon Plant (SynTerra, February 2016). The baseline ecological risk assessment identified potential risks to terrestrial herbivores from aluminum, molybdenum and selenium and terrestrial omnivores and carnivores from molybdenum and selenium in seeps and seep soils immediately surrounding the ash basin. These potential risks were based upon hazard quotients derived using lowest -observed -adverse -effects -levels or LOAEL. Similarly, potential risks to terrestrial herbivore exposure to molybdenum and selenium and terrestrial omnivore and carnivore exposure to selenium in the same area were identified based upon hazard quotients derived using no -observed -adverse -effects -levels or NOAEL. No other areas on or off site indicated potential risks to wildlife (SynTerra, February 2016). Wildlife exposure to cooling pond waste water, sediment, or fish were not considered in the ecological baseline risk assessment. Page 2-5 P:\Duke Energy Progress.1026\109. Weatherspoon Ash Basin GW Assessment Plan\CSA Cooling Pond Assessment\Cooling Pond Work Plan\Weatherspoon Cooling Pond Work Plan 18 August 2016.docx Proposed Cooling Pond Assessment Work Plan August 2016 W.H. Weatherspoon Power Plant SynTerra 3.0 REGIONAL GEOLOGY AND HYDROGEOLOGY The vicinity of the Weatherspoon Plant is generally characterized by shallow water table conditions occurring in surficial soils and unconsolidated sediments underlain by Coastal Plain regional aquifer system. The following sections contain a synopsis of the geologic and hydrogeologic characteristics of the area. The North Carolina Coastal Plain is approximately 90 to 150 miles wide from the Atlantic Ocean westward to its boundary with the Piedmont province (Winner and Coble, 1989). Two natural subdivisions (Tidewater Region and Inner) of the Coastal Plain were described by Stuckey (Stuckey, J.L., 1965). The Weatherspoon Plant is located within the Inner Coastal Plain, which consists of the gently rolling land surface between the Tidewater region and the Fall Line (Winner and Coble, 1989). 3.1 Regional Geology The Coastal Plain comprises a wedge shaped sequence of stratified marine and non - marine sedimentary rocks deposited on crystalline basement. Coastal Plain aquifers are comprised of permeable sands, gravels, and limestone separated by confining units of less permeable sediment. In this region, units of confined aquifers divided by confining layers overlay the crystalline bedrock. The confining units at the top of these aquifers consist of laterally extensive silt and clay rich layers. The Lower Cape Fear and Upper Cape Fear aquifers are the lower-most (deepest) marine sediment units in Robeson County (Winner and Coble, 1989). The Upper Cape Fear aquifer is overlain by the Black Creek aquifer which is in turn overlain by the Pee Dee aquifer. In the Inner Coastal Plain region, the confining unit between the Pee Dee aquifer and the overlying Yorktown or Coastal Plain deposits (the surficial aquifer) is reported to be discontinuous, meaning that the Yorktown and Pee Dee are semi -confined aquifers. A detailed description of the regional geology is presented in Section 5.1 of the CSA Report (SynTerra, August 2015). 3.2 Regional Hydrogeology Groundwater is obtained from the surficial, Yorktown, Pee Dee, and Black Creek aquifers in Robeson County. According to Winner and Coble (1989), the surficial aquifer consists primarily of fine sands, clays, shells, peat beds, and scattered deposits of coarse-grained material in the form of relic beach ridges and floodplain alluvium. The areal extent of the surficial aquifer in the Coastal Plain is approximately 25,000 square miles with an average thickness of 35 feet. Average recharge to the surficial aquifer is between 12 and 20 inches per year. The average estimated hydraulic conductivity is 29 feet per day (Winner and Coble, 1989). Page 3-1 P:\Duke Energy Progress.1026\109. Weatherspoon Ash Basin GW Assessment Plan\CSA Cooling Pond Assessment\Cooling Pond Work Plan\Weatherspoon Cooling Pond Work Plan 18 August 2016.docx Proposed Cooling Pond Assessment Work Plan August 2016 W.H. Weatherspoon Power Plant SynTerra The surficial aquifer in the vicinity of Weatherspoon is comprised of approximately 60 feet of Coastal Plain and Yorktown Formation sediments. It is the first saturated zone underlying the land surface and the first aquifer to receive recharge from precipitation. The recharge water is stored in the surficial aquifer as the groundwater migrates toward local discharge points (lakes, rivers, streams, etc.). A portion of the groundwater in the surficial aquifer migrates vertically to recharge semi -confined aquifers. On average, only a fraction of the surficial aquifer recharge reaches the semi -confined aquifers due to the substantial amount of time it takes for groundwater to reach these units (Giese et al., 1997). The Pee Dee confining unit, with an average thickness of 25 feet across the region, underlies the surficial aquifer (Giese et al., 1997). The Pee Dee aquifer is composed of fine to medium grained sand interbedded with gray to black marine clay and silt (Giese et al., 1997). Shells are common throughout the aquifer. The aquifer thickness ranges from 10 feet at its eastern edge to greater than 300 feet (Giese et al., 1997). Page 3-2 P:\Duke Energy Progress.1026\109. Weatherspoon Ash Basin GW Assessment Plan\CSA Cooling Pond Assessment\Cooling Pond Work Plan\Weatherspoon Cooling Pond Work Plan 18 August 2016.docx Proposed Cooling Pond Assessment Work Plan August 2016 W.H. Weatherspoon Power Plant SynTerra 4.0 COOLING POND CONCEPTUAL MODEL Hydrogeologic and geochemical site conceptual models (SCMs) were developed for the coal ash basin in Section 6.0 of the CSA Report (SynTerra, August 2015). An interim cooling pond conceptual model (CPCM) has been developed based upon historical knowledge of the cooling pond, the hydrogeologic SCMs developed in the CSA Report, and ongoing cooling pond operations. The CPCM will be refined as needed as additional site-specific information is obtained during the cooling pond assessment process. 4.1 Physical Site Characteristics Topography at the site ranges from approximately 140 feet above mean sea level (msl) north of the site to approximately 110 feet msl at the cooling pond to the south and the Lumber River to the west. Based upon historical aerial photographs and historical topographic maps, the cooling pond was constructed between March 1951 and 1957. A March 1951 aerial photograph shows undisturbed mature woodlands and wetlands in the area where the cooling pond now exists. Jacob Creek is observed meandered through the areas where the northeast arm and the southern lobe of the cooling pond now exist (Figure 2-1). Jacob Creek was redirected to the existing streambed during construction of the cooling pond. Jacob Creek now flows between the eastern earthen berm of the cooling pond and the Weatherspoon Plant eastern property boundary (Figure 1-2). There are no standing trees or stumps protruding above the cooling pond surface at typical water levels. Consequently, it appears that the area has been cleared of trees and vegetation before the cooling pond was filled. 4.2 Source Characteristics The focus of the cooling pond assessment is whether coal ash is present in the cooling pond. The physical and chemical characteristics of coal ash are detailed in Sections 3.2 and 3.3 of the CSA Report (SynTerra, August 2015). 4.3 Site Hydrogeology Topography at the site ranges from approximately 140 feet above mean sea level (msl) north of the site to approximately 110 feet msl at the cooling pond to the south and the Lumber River to the west. Jacob Creek flows south, toward the Lumber River, along the east side of the cooling pond. The Lumber River and Jacob Creek act as discharge areas with respect to groundwater flow. Page 4-1 P:\Duke Energy Progress.1026\109. Weatherspoon Ash Basin GW Assessment Plan\CSA Cooling Pond Assessment\Cooling Pond Work Plan\ Weatherspoon Cooling Pond Work Plan 18 August 2016.docx Proposed Cooling Pond Assessment Work Plan August 2016 W.H. Weatherspoon Power Plant SynTerra Four layered geologic units (Coastal Plain surficial deposits, Yorktown Formation, Pee Dee Formation, and Black Creek Formation) were encountered in exploratory borings installed at the site during the CSA field investigation. The surficial unconfined aquifer is the first major hydrostratigraphic unit at the Weatherspoon site. The upper portion of this aquifer consists of thin isolated deposits of sub -angular to well-rounded gravel alluvium or Coastal Plain surficial deposits that consist of black, gray, brown, light red, tan, or white silty fine sand, sandy silt, clayey silt, or sandy clay. These deposits vary in thickness from approximately 3 to 30 feet. The lower portion of the surficial aquifer consists of Yorktown deposits (identified based on the characteristic color and content described for the formation) that range from approximately 14 to 35 feet thick. The Yorktown deposits at Weatherspoon consist of blue, green, gray, and white fossiliferous sand and sandy silty clay. A clay rich confining unit, which appears to be continuous across the site separates the Yorktown deposits from the underlying Pee Dee sediments. The Coastal Plain surficial deposits and the Yorktown Formation are pertinent to cooling pond hydrology. Details pertaining to the hydrogeology and physical characteristics of confined water bearing units at the Weatherspoon Plant are presented in Section 6.2 of the CSA Report (SynTerra, August 2015). The surface of groundwater (water table) at Weatherspoon is typically located at depths of three to 10 feet below ground surface, depending on antecedent precipitation and topography. The surficial aquifer groundwater flow regime of the Weatherspoon Plant is bounded on the southwest by the Lumber River and to the south and east by the cooling pond and Jacob Creek (Figure 4-1). Based on site topography, groundwater on the eastern side of Jacob Creek would be expected to flow west toward the creek. Ash pore water contained within the coal ash basin is mounded above the underlying Coastal Plain surficial deposits and the Yorktown Formation and is discharged from the ash basin to unconfined groundwater as well as seeps above the ground surface. 4.4 Cooling Pond Construction The cooling pond did not exist in 1949 when the Weatherspoon Plant became operational. An aerial photograph taken in 1951 shows that an engineered channel was constructed that connected two bends in the meandering Lumber River southwest of the Weatherspoon Plant (Figure 2-1). The area where the cooling pond is now present appears to have been either mature undeveloped woodlands or wetlands. It also appears that Jacob Creek channel flowed northeast to southwest through the northeast arm of the current cooling pond and discharged to the Lumber River near the southern most portion of the current cooling pond. A USGS topographic map recorded in 1957 Page 4-2 P:\Duke Energy Progress.1026\109. Weatherspoon Ash Basin GW Assessment Plan\CSA Cooling Pond Assessment\Cooling Pond Work Plan\Weatherspoon Cooling Pond Work Plan 18 August 2016.docx Proposed Cooling Pond Assessment Work Plan August 2016 W.H. Weatherspoon Power Plant SynTerra (Bladenboro Quadrangle; Series: 15 and 1:62,500 scale) identifies the cooling pond as the "Plant Cooling Lake" (Figure 2-2). Therefore, the cooling pond appears to have been constructed between 1951 and 1957. Construction of the cooling pond required clearing of the mature trees and vegetation as well as rerouting Jacob Creek to flow along the eastern perimeter of the current cooling pond. It appears reasonable that soil excavated during the rerouting and construction of the Jacob Creek channel was likely used to construct the cooling pond dike that separates the cooling pond and Jacob Creek. However, the soil used to create the interior cooling pond dikes and the western cooling pond perimeter dike was likely obtained from within the cooling pond during construction or from a borrow source. 4.5 Cooling Pond Hydraulics The cooling pond water level is maintained between 108.5 feet and 109.5 feet above msl. If the cooling pond water level drops below 108.5 feet msl, the cooling pond intake pump loses suction and cooling pond makeup water is transferred from the Lumber River to raise the cooling pond water level up to 109.5 feet msl. The freeboard available for heavy rain events is 2.5 feet when the cooling pond level is 109.5 feet msl. The last known NPDES discharge from the cooling pond to the Lumber River via Outfall 001 occurred in September 1999 due to rainfall associated with Hurricane Floyd (E-mail correspondence, July 2016). Under normal operating conditions, the maximum water elevation of the cooling pond is 109.5 feet msl whereas the elevation of lower Jacob Creek surface water before discharging to the Lumber River was measured and recorded to be 102.90 feet msl on July 13, 2016. Consequently, the typical maximum depth of the cooling pond is estimated to be approximately 7 feet or less during periods of average (seasonal) precipitation. This assumes that the depth of soil excavation within the cooling pond during construction of perimeter and interior dike construction did not extend significantly below the water table. Measuring and recording water depths throughout the cooling pond will be completed during the cooling pond assessment. 4.5.1 Cooling Pond Inflows Inputs to the cooling pond are variable and can change from day to day and year to year. This variability is demonstrated by the inflows and outflows listed in the 2009 and 2014 NPDES Permit NC0005363 renewal applications (Figures 4-2 through 4-5; Appendices C and D). Inflows presented in the sections that follows are categorized as being either predominantly non -anthropogenic sources or anthropogenic sources. Predominantly non -anthropogenic sources of inflow, precipitation and makeup water from the Lumber River, are discussed in Page 4-3 P:\Duke Energy Progress.1026\109. Weatherspoon Ash Basin GW Assessment Plan\CSA Cooling Pond Assessment\Cooling Pond Work Plan\Weatherspoon Cooling Pond Work Plan 18 August 2016.docx Proposed Cooling Pond Assessment Work Plan August 2016 W.H. Weatherspoon Power Plant SynTerra Section 4.5.1.1. Anthropogenic sources of inflow include process discharges to the cooling pond and other discharges that are potentially impacted by residual waste (e.g., surface water runoff and groundwater discharge containing site related constituents). Anthropogenic sources of inflow to the cooling pond are discussed in Section 4.5.1.2. 4.5.1.1 Predominantly Non -Anthropogenic Inflows Predominantly non -anthropogenic sources of inflow include precipitation and makeup water from the Lumber River. Average annual precipitation in Lumberton is approximately 47.7 inches per year (usclimatedata.com, July 30, 2016). Based upon this rate of annual precipitation, it is conservatively estimated that annual precipitation contributes approximately 290 million gallons of water to the cooling pond per year. This estimate is based only on the amount of precipitation that occurs within the total area of the cooling pond (225 acres) and does not include surface water runoff. Duke Energy submits an Annual Water Use Report to the North Carolina Division of Water Resources for the cooling pond makeup water withdrawn from the Lumber River. The 2015 Annual Water Use Report submitted to the North Carolina Division of Water Resources by Duke Energy indicates that the volume of water pumped from the Lumber River to the cooling pond in 2015 was approximately 34.8 million gallons (Appendix E). The total estimated cooling pond inflows from annual precipitation (290 million gallons) and makeup water withdrawn annually from the Lumber River (34.8 million gallons) is approximately 325 million gallons of water per year. 4.5.1.2 Anthropogenic Inflows Anthropogenic sources of inflow to the cooling pond include process discharges and other discharges that are potentially impacted by residual waste (e.g., surface water runoff and groundwater discharge containing site related constituents). The anthropogenic sources of inflow to the cooling pond listed in the 2014 NPDES Permit NC0005363 renewal application (Figures 4-4 and 4-5) are summarized below and are presented as million gallons per year (MGY): Page 4-4 P:\Duke Energy Progress.1026\109. Weatherspoon Ash Basin GW Assessment Plan\CSA Cooling Pond Assessment\Cooling Pond Work Plan\Weatherspoon Cooling Pond Work Plan 18 August 2016.docx Proposed Cooling Pond Assessment Work Plan August 2016 W.H. Weatherspoon Power Plant SynTerra Source Estimated Avg. Flow Comments C/D 0.073 MGY Potable groundwater used for sanitary wastes E 51.1 MGY Oil/water separator discharge (oily wastes)* G 69.4 MGY Storm water runoff H 4.0 MGY Oil/water separator discharge (fuel oil remediation and combustion turbine drains) 124.6 MGY I Total cooling pond inflows from anthropogenic sources * This inflow has since been eliminated (E-mail correspondence, August 2016). Unconfined groundwater on the southernmost sides of the coal ash basin flows south toward the cooling pond (Figure 4-1). Unconfined groundwater flows from the coal ash basin likely discharges into the cooling pond from a portion of the former Jacob Creek streambed. The length of shoreline where groundwater is flowing towards the cooling pond is estimated to be approximately 4,300 feet. In contrast, the length of shoreline where cooling pond water is migrating into Jacob Creek and the Lumber River via seepage is estimated to be approximately 12,300 feet. Therefore, it appears likely that groundwater inflow is easily offset by cooling pond outflow via seepage to Jacob Creek and the Lumber River. Excluding the contribution of groundwater discharging into the cooling pond, total inflows to the cooling pond from non -anthropogenic sources (325 MGY) and anthropogenic sources (124.6 MGY) is approximately 450 MGY. Consequently, anthropogenic inflows comprise approximately 28 percent of the total inflows into the cooling pond with the balance being made up by inflows from predominantly non -anthropogenic sources (Section 4.5.1.1). This suggests that the concentration of highly soluble constituents introduced into the cooling pond by anthropogenic sources (e.g., boron) would be attenuated by means of dilution and flushing from the cooling pond. 4.5.2 Cooling Pond Outflows Three cooling pond outflows are listed in the 2014 NPDES Permit NC0005363 renewal application (Figures 4-4 and 4-5); discharge from the cooling pond to the Lumber River via outfall 001, evaporation, and seepage. The outflow via Outfall 001 is listed as 0 MGD because the cooling pond is maintained at levels that are capable of containing most precipitation events (Section 4.5). The last known NPDES discharge from the cooling pond to the Lumber River via Outfall 001 Page 4-5 P:\Duke Energy Progress.1026\109. Weatherspoon Ash Basin GW Assessment Plan\CSA Cooling Pond Assessment\Cooling Pond Work Plan\Weatherspoon Cooling Pond Work Plan 18 August 2016.docx Proposed Cooling Pond Assessment Work Plan August 2016 W.H. Weatherspoon Power Plant SynTerra occurred in September 1999 due to rainfall associated with Hurricane Floyd (E- mail correspondence, July 2016). Cooling pond outflow due to evaporation and seepage is estimated to be 0.7 MGD or 256 MGY (Figures 4-4 and 4-5). 4.5.3 Hydraulic Residence Time Hydraulic residence time, as it pertains to the cooling pond, is a measure of the time that the volume of water in the cooling pond is replaced by an equal volume of inflow. The hydraulic residence time of the cooling pond is calculated using the following formula: T= V/q Where: T = hydraulic residence time (years); V = volume (gallons); and q = volumetric flow rate (gallons/year) Assuming that the area of the cooling pond is 9.8 million square feet (225 acres) and the average depth is 3.5 feet, the cooling pond hydraulic capacity (V) is 256.6 million gallons of water. If only inflows from Lumber River makeup water and precipitation to the cooling pond are considered (Section 4.5.1.1), then the hydraulic residence time (T) of the cooling pond is calculated to be: 256.6 million gallons = 0.79 years or 9.5 months (34.8 + 290 million gallons/year) Based upon this analysis, the cooling pond volume could have been replaced with makeup water from the Lumber River and precipitation approximately 6 times since the coal-fired units were retired (October 2011 to July 2016). If all estimated inflows to the cooling pond are considered, except for the inflow contribution of groundwater, the hydraulic residence time (T) of the cooling pond is calculated to be: 256.6 million gallons = 0.57 years or 6.9 months (34.8 + 290 + 124.6 million gallons/year) Based upon this analysis, the cooling pond volume could have been replaced with water from non -anthropogenic and anthropogenic inflow sources approximately 8.3 times since the coal-fired units were retired (October 2011 to July 2016). Page 4-6 P:\Duke Energy Progress.1026\109. Weatherspoon Ash Basin GW Assessment Plan\CSA Cooling Pond Assessment\Cooling Pond Work Plan\Weatherspoon Cooling Pond Work Plan 18 August 2016.docx Proposed Cooling Pond Assessment Work Plan August 2016 W.H. Weatherspoon Power Plant SynTerra 4.6 Chemical Constituents Introduced Into The Cooling Pond by Anthropogenic Sources Potential discharges to the cooling pond listed in the 2009 and 2014 NPDES Permit NC0005363 renewal applications that are not covered by chemical analysis under the permit are presented in Figures 4-6 and 4-7, respectively. A comparison of the two permit lists suggests that potential discharges to the cooling pond not covered by chemical analysis under the permit has been significantly reduced since the coal-fired units were retired in October 2011. 4.7 Potential Mechanisms For Coal Ash Transport To Cooling Pond It appears that coal ash was managed in the area where the coal ash basin is currently located prior to construction of the cooling pond. A 1951 aerial photograph shows a cleared area northeast of Weatherspoon Plant operations and white trails connecting disturbed (unvegetated) areas (Figure 2-1). In addition, a 1957 USGS topographic map does not indicate the presence of an engineered coal ash basin (Figure 2-2). However, a 1958 aerial photograph clearly shows an engineered ash containment structure (Figure 4-8). If coal ash generated before construction of an engineered coal basin was managed in a cleared area where the ash basin now exists, it is plausible that coal ash could have been transported via surface water runoff to low lying areas including the cooling pond, pre- and post -construction. Particulate emissions from the coal-fired power plant stack would have occurred when power generation operations began in 1949 until air emission control mechanisms were installed. Consequently, it is plausible that some airborne deposition of coal ash into the cooling pond occurred as a result of stack emissions. Similarly, it is plausible that coal ash from the coal ash basin became airborne on windy days and was deposited into the cooling pond. Coal ash generated during coal fired power production was sluiced to the coal ash basin. The sluice water accumulated in the coal ash basin until it infiltrated into the underlying groundwater or was discharged from the coal ash basin. Sluice water was discharged from the coal ash basin via the stilling basin located in the eastern corner of the ash basin dike. Water within the stilling basin accumulated until it reached the level of an overflow pipe which directed the discharge to the northeast arm of the cooling pond by way of a 24 -inch diameter reinforced concrete decanting pipe (Figure 4-9). It is plausible that some amount of coal ash in the sluice water could have been inadvertently discharged to the cooling pond. Page 4-7 P:\Duke Energy Progress.1026\109. Weatherspoon Ash Basin GW Assessment Plan\CSA Cooling Pond Assessment\Cooling Pond Work Plan\Weatherspoon Cooling Pond Work Plan 18 August 2016.docx Proposed Cooling Pond Assessment Work Plan August 2016 W.H. Weatherspoon Power Plant SynTerra Other than incidental transport of coal ash to the cooling pond via the mechanisms discussed in this section, there are no known releases of coal ash from the coal ash basin to the cooling pond. 4.8 Cooling Pond Analytical Data The only analytical data available associated with the cooling pond is an analysis of a grab cooling pond water sample used for preparation of the NPDES Permit NC0005363 renewal application submitted on January 28, 2014 (Appendix D) and a cooling pond grab water sample collected near Outfall 001 on March 12, 2014 (E-mail correspondence, August, 2016). The cooling pond grab water sample submitted for the NPDES permit renewal application was analyzed for a range of water quality parameters and pollutants including: �1 Biochemical oxygen demand (BOD), chemical oxygen demand (COD), total organic carbon (TOC), total suspended solids (TSS), ammonia, pH; 0 Metals, cyanide, and total phenols; 41, Volatile compounds; and ,67 Base/neutral compounds. Analysis of the cooling pond water sample resulted in non -detections for all but the following parameters: Parameter Analytical Result pH 6.8 su BOD 3.1 mg/L TOC 6.38 mg/L Total iron 0.11 mg/L Total antimony 0.005 mg/L Total arsenic 0.006 mg/L Total copper 0.004 mg/L Total nickel 0.006 mg/L su - standard units The cooling pond grab water sample collected near Outfall 001 was analyzed for the following inorganic constituents (E-mail correspondence, August, 2016): Page 4-8 P:\Duke Energy Progress.1026\109. Weatherspoon Ash Basin GW Assessment Plan\CSA Cooling Pond Assessment\Cooling Pond Work Plan\Weatherspoon Cooling Pond Work Plan 18 August 2016.docx Proposed Cooling Pond Assessment Work Plan August 2016 W.H. Weatherspoon Power Plant SynTerra Parameter Analytical Result Parameter Analytical Result Chloride 15 mg/L Total manganese 0.01 mg/L Fluoride < 1 mg/L Total antimony 0.00415 mg/L Sulfate 78 mg/L Total arsenic 0.00214 mg/L Total aluminum 0.047 mg/L Total cadmium < 0.001 mg/L Total barium 0.093 mg/L Total chromium < 0.001 mg/L Total boron 0.319 mg/L Total lead < 0.001 mg/L Total calcium 22.9 mg/L Total molybdenum 0.0224 mg/L Total copper < 0.005 mg/L Total nickel 0.00501 mg/L_ Total hardness 73.9 mg/L* Total selenium 0.00365 mg/L Total iron 0.057 mg/L Total zinc 0.00842 mg/L Total magnesium 4.07 mg/L TDS** 157 mg/L * Total hardness expressed as mg/L CaCO3 (calcium carbonate) ** TDS - Total dissolved solids Page 4-9 P:\Duke Energy Progress.1026\109. Weatherspoon Ash Basin GW Assessment Plan\CSA Cooling Pond Assessment\Cooling Pond Work Plan\ Weatherspoon Cooling Pond Work Plan 18 August 2016.docx Proposed Cooling Pond Assessment Work Plan August 2016 W.H. Weatherspoon Power Plant SynTerra 5.0 COOLING POND ASSESSMENT WORK PLAN The scope of work discussed in this work plan is designed to meet the requirements of 15A NCAC 02L .0106(g) as it pertains to the cooling pond assessment. Aqueous and solid media sampling will be performed to determine whether coal ash is present in the cooling pond and, if present, the vertical and horizontal extent of coal ash within the cooling pond. In addition, analytical results for samples collected from the cooling pond, Lumber River, Jacob Creek, unnamed onsite pond, and groundwater will be compared to determine if discernable differences in water quality exist across waterbodies. Six groundwater monitoring well installations are proposed at three locations on the cooling pond dike (Figure 5-1). The installation of groundwater monitoring wells is discussed in Section 5.1. Cooling pond assessment water and sediment sampling is discussed in Sections 5.2 and 5.3, respectively. Quality assurance and quality control procedures are discussed in Section 5.4. 5.1 Groundwater Monitoring Well Installation Three groundwater monitoring well pairs will be installed along the cooling pond dike at locations indicated in Figure 5-1. All proposed wells will be screened within the upper or lower surficial (unconfined) aquifer. Each well pair will consist of a shallow ("S") well screened in Coastal Plain surficial deposits and an intermediate ("I") well screened in underlying Yorktown Formation deposits. 5.1.1 Well Completion Shallow and intermediate wells will be installed using rotary -sonic drilling. At each location, intermediate wells will be the first followed by the installation of the shallow well. A 6 -inch diameter sonic core barrel will be advanced to the confining unit that separates the surficial aquifer and the first confined aquifer. Continuous soil cores will be collected and evaluated to determine when Coastal Plain surficial deposits, Yorktown Formation sand, and the confining unit are encountered. Intermediate wells will be constructed using five-foot pre -packed well screens installed within the Yorktown Formation. Well casings will consist of two-inch diameter NSF PVC schedule 40 flush -joint threaded casing. The annular space between the borehole wall/inner casing and the pre -packed well screens for each well will be filled with clean, well-rounded, washed, high-grade 20/40 mesh silica sand. The sand pack will be installed to approximately 2 feet above the top of the pre -packed screen, followed by the installation of an approximately 2 -foot Page 5-1 P:\Duke Energy Progress.1026\109. Weatherspoon Ash Basin GW Assessment Plan\CSA Cooling Pond Assessment\Cooling Pond Work Plan\Weatherspoon Cooling Pond Work Plan 18 August 2016.docx Proposed Cooling Pond Assessment Work Plan August 2016 W.H. Weatherspoon Power Plant SynTerra pelletized bentonite seal above the sand pack. The remaining annular space will be filled with a neat cement grout from the top of the upper bentonite seal to near ground surface. Shallow wells will be constructed in an identical manner as the intermediate wells except that the boring will installed to a depth corresponding to the Coastal Plain surficial deposit/Yorktown Formation interface. Shallow wells will be constructed using five-foot pre -packed well screens centrally installed within Coastal Plain sands. Monitoring wells will be completed with steel flush -mount manholes with locking expansion caps and well tags. Protective covers will be secured and completed in a concrete collar and 2 -foot square concrete pad. 5.1.2 Well Development Monitoring wells will be developed to remove drill fluids, clay, silt, sand, and other fines that may have been introduced into the formation or sand pack during drilling and well installation, and to establish communication of the well with the aquifer. Well development will be performed using a portable submersible pump, which will be repeatedly surged (moved up and down) within the well screen interval until the water obtained is relatively clear. Development will be continued by sustained pumping until monitoring parameters (e.g., conductivity, pH, temperature) are stabilized and sample turbidity decreases to acceptable levels (10 Nephelometric Turbidity Units or NTUs). Well development will occur at least 24 hours after installation to allow for grout cure time. 5.2 Wastewater and Surface Water Samples Cooling pond wastewater samples and surface water samples from Jacob Creek, Lumber River and unnamed onsite pond will be collected using either a new disposable bailer or collected directly into unused sample bottle ware provided by the analytical laboratory. If sampling from a boat, the bottle ware will be gently lowered into the water until a portion of the bottle ware mouth is just below the water surface. Water samples should not contain debris (e.g., leaves, grass, and surface sheen). Bottle ware containing a preservative (e.g., acid) will be filled with the grab surface water sample collected in bottle ware that does not contain a preservative. 5.2.1 Grab Water Samples The following grab water samples will be collected in support of the cooling pond assessment (Figure 5-1): Page 5-2 P:\Duke Energy Progress.1026\109. Weatherspoon Ash Basin GW Assessment Plan\CSA Cooling Pond Assessment\Cooling Pond Work Plan\Weatherspoon Cooling Pond Work Plan 18 August 2016.docx Proposed Cooling Pond Assessment Work Plan August 2016 W.H. Weatherspoon Power Plant SynTerra E1, Fifteen grab water samples will be collected from the cooling pond (CP -1, CP -2, CP -3, CP -4, CP -6, CP -7, CP -10, CP -12, CP -14, CP -16, CP -17, CP -19, CP -20, CP -21, and CP -22). These samples will be collected from a boat; 47 A single grab surface water sample (LR -1) will be collected from the Lumber River at the cooling pond makeup water intake. This sample will be collected from the cooling pond makeup water intake structure by lowering a new disposable bailer into the water by rope; E1 Two background surface water grab samples (BG -1 and BG -2) will be collected from the unnamed on-site pond (Figure 5-1). These samples will be collected from a boat; 01 Two background surface water grab samples (BG -3 and BG -4) will be collected from Jacob Creek. These samples will be collected from the shoreline using a bailer; and EP Three surface water grab samples will be collected from Jacob Creek (JC -1, JC -2, and JC -3). These samples will be collected from the shoreline by filling the sample bottleware directly or using a bailer. The field parameters listed in Table 5-1 will be measured and recorded during the collection of these water samples. All of the grab water samples will be submitted to the Duke Energy analytical laboratory and analyzed for the constituents listed in Table 5-1. Unfiltered and filtered (0.45 µm) grab wastewater and surface water samples will be submitted for inorganic analyses. Wastewater and surface water grab samples will not be analyzed for hexavalent chromium. Analytical results for surface water samples collected from the Lumber River, the unnamed onsite pond, and Jacob Creek will be compared to 15A NCAC 2B .0200 Classifications and Water Quality Standards Applicable to Surface Waters and Wetlands of North Carolina (2B Standards Class C Water). The cooling pond is used for wastewater treatment and is permitted under the NPDES program. Consequently, cooling pond water samples will not be compared to 2B Standards Class C Water. 5.2.2 Groundwater Samples Groundwater samples will be collected from the six new groundwater monitoring wells (Section 5.1) and the three existing piezometers installed within the cooling pond dike (Figure 5-1). Cooling pond piezometers are Page 5-3 P:\Duke Energy Progress.1026\109. Weatherspoon Ash Basin GW Assessment Plan\CSA Cooling Pond Assessment\Cooling Pond Work Plan\Weatherspoon Cooling Pond Work Plan 18 August 2016.docx Proposed Cooling Pond Assessment Work Plan August 2016 W.H. Weatherspoon Power Plant SynTerra constructed with 10 -foot well screens at depths bracketing or just below the water surface beneath the dike. Consequently, water samples collected from cooling pond dike piezometers are expected to reflect the quality of seepage water migrating from the cooling pond to the Lumber River (PZ -101) or Jacob Creek (PZ -102 and PZ -103). However, samples collected from the new groundwater monitoring wells (AW-4S/I, AW-5S/I, and AW-6S/I) will be representative of surficial aquifer groundwater. Groundwater samples will be collected using a peristaltic pump per the groundwater sampling procedure presented in the Proposed Groundwater Assessment Work Plan (SynTerra, December 2014). The field parameters listed in Table 5-1 will be measured and recorded during groundwater sampling. Groundwater samples will be submitted to the Duke Energy analytical laboratory and analyzed for the constituents listed in Table 5-1. Unfiltered and filtered (0.45 µm) groundwater samples will be submitted for inorganic analyses including analysis for hexavalent chromium. Groundwater results will be compared to the 15A NCAC Subchapter 02L Standards and Interim Maximum Allowable Concentrations (IMACs). Appendix 1 of 15A NCAC Subchapter 02L Classifications and Water Quality Standards Applicable to The Groundwaters of North Carolina lists IMACs. The IMACs were issued in 2010 and 2011, however NCDEQ has not established a 21, standard for these constituents as described in 15A NCAC 02L.0202(c). For this reason, IMACs are for reference only. 5.3 Sediment Samples Sediment core and grab samples will be collected from the cooling pond, Lumber River, Jacob Creek, and the onsite background pond (Figure 5-1). Cooling pond and onsite background pond sediment core and grab samples will be collected from a boat whereas Jacob Creek and Lumber River sediment core and grab samples will be collected from the shoreline. Sediment cores of approximately 1 foot in length will be collected manually using a core retrieval device. Mechanical core collection (e.g., Geoprobe° from barge) may be warranted if coal ash is determined to be present at depths beyond the capability of manual coring devices. 5.3.1 Sediment Core Samples The following sediment core samples will be collected in support of the cooling pond assessment (Figure 5-1): y Twenty-four sediment core samples will be collected from the cooling pond (CP -1 through CP -24). These samples will be collected from a boat; Page 5-4 P:\Duke Energy Progress.1026\109. Weatherspoon Ash Basin GW Assessment Plan\CSA Cooling Pond Assessment\Cooling Pond Work Plan\Weatherspoon Cooling Pond Work Plan 18 August 2016.docx Proposed Cooling Pond Assessment Work Plan August 2016 W.H. Weatherspoon Power Plant SynTerra y One sediment core samples will be collected from the Lumber River (LR - 1). This sample will be collected from the shore nearest the cooling pond makeup water intake. E1, Two background sediment core samples will be collected from the unnamed onsite pond (BG -1 and BG -2). These samples will be collected from a boat; 41, Two background sediment core samples will be collected from Jacob Creek (BG -3 and BG -4). These samples will be collected from the shoreline; and 161, Three background sediment core samples will be collected from Jacob Creek (JC -1, JC -2 and JC -3). These samples will be collected from the shoreline. Sediment core samples will be analyzed by polarized light microscopy (PLM) to determine the presence of coal ash in sediment core samples and to quantify the amounts of coal ash when present in core samples. Sediment core samples will be collected after grab water samples are collected but before collecting the sediment grab sample. Sediment core samples will be collected with a coring device that can retrieve a relatively undisturbed 1 -foot sediment core sample. The sediment core sample will be examined to determine the depth where the sediment grab sample will be collected. Sediment core samples will be submitted to an offsite subcontract laboratory for PLM analysis. 5.3.2 Sediment Grab Samples The following grab sediment samples will be collected in support of the cooling pond assessment (Figure 5-1): y Twenty-four grab sediment samples will be collected from the cooling pond (CM through CP -24). These samples will be collected from a boat; One grab sediment samples will be collected from the Lumber River (LR - 1). This sample will be collected from the shore nearest the cooling pond makeup water intake. y Two background grab sediment samples will be collected from the onsite cooling pond (BG -1 and BG -2). These samples will be collected from a boat; Page 5-5 P:\Duke Energy Progress.1026\109. Weatherspoon Ash Basin GW Assessment Plan\CSA Cooling Pond Assessment\Cooling Pond Work Plan\Weatherspoon Cooling Pond Work Plan 18 August 2016.docx Proposed Cooling Pond Assessment Work Plan August 2016 W.H. Weatherspoon Power Plant SynTerra 161, Two background grab sediment samples will be collected from Jacob Creek (BG -3 and BG -4). These samples will be collected from the shoreline; and E1, Three background grab sediment samples will be collected from Jacob Creek (JC -1, JC -2 and JC -3). These samples will be collected from the shoreline. The depth of the grab sediment sample may be determined by what is observed in the sediment core sample. The grab sediment sample should be collected from the depth where distinct changes in sediment core color appears because this may be an indication that coal ash or other unexpected material has been deposited onto the sediment. The grab sediment sample may be collected from a second core sample collected from a location immediately adjacent to the first sediment core sampling location. Decontamination of the coring devise is not necessary when collecting sediment core and grab samples from the same sample location (e.g., CP -19). Decontamination of the coring devise is required between the collection of sediment core and grab samples from different sample locations (e.g., CP -19 and CP -20). All of the grab sediment samples will be submitted to the Duke Energy analytical laboratory and analyzed for the constituents listed in Table 5-2. 5.4 Field and Sampling Quality Assurance/Quality Control Procedures Documentation of field activities will be completed using a combination of logbooks, field data records (FDRs), sample tracking systems, and sample custody records. Field logbooks may be used to provide a general record of activities and events that occur during the day. FDRs will be used to document and record sample identification, sample collection time and date, field parameters, observations, and other pertinent sample collection details. 5.4.1 Field Logbooks The field logbooks are permanently bound and provide a hand written account of general field activities. Entries are made in indelible ink, and corrections are made with a single line with the author initials and date. Each page of the logbook is dated and initialed by the person completing the log. Partially completed pages will have a line drawn through the unused portion at the end of each day with the author's initials. The following information is generally entered into the field logbooks: Page 5-6 P:\Duke Energy Progress.1026\109. Weatherspoon Ash Basin GW Assessment Plan\CSA Cooling Pond Assessment\Cooling Pond Work Plan\Weatherspoon Cooling Pond Work Plan 18 August 2016.docx Proposed Cooling Pond Assessment Work Plan August 2016 W.H. Weatherspoon Power Plant SynTerra 10 The date and time of each entry; 101 A summary of important tasks or subtasks completed during the day; 01 A description of field tests completed in association with the daily task; 101 A description of samples collected including documentation of quality control samples that were prepared (rinse blanks, duplicates, matrix spike, split samples, etc.); 101 Documentation of equipment maintenance and calibration activities; 101 Documentation of equipment decontamination activities; and, y Descriptions of deviations from the work plan. 5.4.2 Field Data Records Sample FDRs contain sample collection and/or exploration details. A FDR may be a preprinted fill-in the blanks form on paper or it may be an electronically generated form where data and information is recorded and stored directly onto an I -pad or similar. A FDR is completed each time a field sample is collected. The goal of the FDR is to document exploration and sample collection methods, materials, dates and times, and sample locations and identifiers. Field measurements and observations associated with a given exploration or sample collection task are recorded on the FDRs. FDRs are maintained throughout the field program in files that become a permanent record of field program activities. 5.4.3 Sample Identification In order to ensure that each number for every field sample collected is unique, samples will be identified by the sample location and depth interval, if applicable (e.g., CP -10 [0-1']). Samples will be numbered in accordance with the proposed sample IDs shown on Figure 5-1. 5.4.4 Field Equipment Calibration Field sampling equipment (e.g., YSI ph/conductivity/temperature/dissolved oxygen/oxidation-reduction potential [ORP] meter) will be properly maintained and calibrated prior to and during continued use to assure that measurements are accurate within the limitations of the equipment. Personnel will follow the manufacturers' instructions to determine if the instruments are functioning within their established operation ranges. The calibration data will be recorded in a dedicated calibration log. Sampling or field measurement instrument determined to be malfunctioning will be repaired or will be replaced with a new Page 5-7 P:\Duke Energy Progress.1026\109. Weatherspoon Ash Basin GW Assessment Plan\CSA Cooling Pond Assessment\Cooling Pond Work Plan\Weatherspoon Cooling Pond Work Plan 18 August 2016.docx Proposed Cooling Pond Assessment Work Plan August 2016 W.H. Weatherspoon Power Plant SynTerra piece of equipment. Field equipment calibration will be conducted in accordance with the CSA Groundwater Assessment Work Plan (SynTerra, December 2014). 5.4.5 Sample Custody Requirements A program of sample custody will be followed during sample handling activities in both field and laboratory operations. This program is designed to account for each sample at all times. The appropriate sampling and laboratory personnel will complete chain -of -custody records, and laboratory receipt sheets. Procedures for maintaining and documenting sample custody, sample packing, and sample transport will be conducted in accordance with the CSA Groundwater Assessment Work Plan (SynTerra, December 2014). 5.4.6 Quality Assurance and Quality Control Samples The following quality assurance/quality control (QA/QC) samples will be collected during the proposed field activities: E1 Equipment rinse blanks (one per day); 01 Field Duplicates (one per 20 samples per sample medium) Equipment rinse blanks will be collected from the sediment core collection device and non -dedicated groundwater sampling equipment on days when they are used for sample collection. The sediment core collection device will be decontaminated when sample collection from a designated sampling location is completed (Section 5.3.7). An aliquot of the final control rinse water will be passed over the cleaned equipment directly into a sample container and submitted for analysis. Groundwater samples will be collected using a peristaltic pump and new sample tubing. Used sample tubing will be discarded following sample collection from individual monitoring wells. Deionized water provided by the analytical laboratory will be transferred directly into equipment blank sample containers via new and unused sample tubing. A field duplicate is a replicate sample prepared at the sampling locations from equal portions of all sample aliquots combined to make the sample. Both the field duplicate and the sample are collected at the same time, in the same container type, preserved in the same way, and analyzed by the same laboratory as a measure of sampling and analytical precision. Page 5-8 P:\Duke Energy Progress.1026\109. Weatherspoon Ash Basin GW Assessment Plan\CSA Cooling Pond Assessment\Cooling Pond Work Plan\Weatherspoon Cooling Pond Work Plan 18 August 2016.docx Proposed Cooling Pond Assessment Work Plan August 2016 W.H. Weatherspoon Power Plant SynTerra Field QA/QC samples will be analyzed for the laboratory analytical parameters proposed for water and sediment samples identified on Tables 5-1 and 5-2, respectively. 5.4.7 Decontamination Procedures Proper decontamination of sampling equipment is essential to minimize the possibility of cross contamination of samples. Previously used sampling equipment will be decontaminated before sampling and between the collection of each sample. New and unused disposable sampling equipment (e.g., peristaltic pump tubing) will be used for the collection of groundwater samples. Field sampling equipment reused to collect multiple samples (e.g., sediment core collection device) will be decontaminated between sample locations using potable water and phosphate and borax -free detergent solution and a brush, if necessary, to remove particulate matter and surface films. Equipment will then be rinsed thoroughly with tap water to remove detergent solution prior to use at the next sample location. Page 5-9 P:\Duke Energy Progress.1026\109. Weatherspoon Ash Basin GW Assessment Plan\CSA Cooling Pond Assessment\Cooling Pond Work Plan\Weatherspoon Cooling Pond Work Plan 18 August 2016.docx Proposed Cooling Pond Assessment Work Plan August 2016 W.H. Weatherspoon Power Plant SynTerra 6.0 MODELING OF GROUNDWATER IMPACTS TO SURFACE WATER The cooling pond was incorporated into groundwater modeling conducted during the CSA groundwater assessment. Groundwater modeling is presented in Section 4.0 of the CAP Part 1 Report (SynTerra, November 2015) and Section 3.0 of the CAP Part 2 Report (SynTerra, February 2016). Cooling pond assessment data will be used to determine whether additional groundwater modeling is warranted. Page 6-1 P:\Duke Energy Progress.1026\109. Weatherspoon Ash Basin GW Assessment Plan\CSA Cooling Pond Assessment\Cooling Pond Work Plan\ Weatherspoon Cooling Pond Work Plan 18 August 2016.docx Proposed Cooling Pond Assessment Work Plan August 2016 W.H. Weatherspoon Power Plant SynTerra 7.0 COOLING POND ASSESSMENT REPORT The cooling pond assessment report will include the following components: 10 Executive Summary ,67 Site History and Source Characterization 161P Site Geology and Hydrogeology 161P Sampling Results 10 Site Conceptual Model E1 Groundwater Modeling 161P Conclusions and Recommendations `0 Figures Tables 161, Appendices The following deliverables will be included: 167 Piper and/or stiff diagrams showing selected monitoring wells, Jacob Creek surface water, Lumber River surface water and cooling pond water sampling locations as separate symbols. E1P Geologic cross sections that include the relative position of the cooling pond bottom and coal ash in the cooling pond (if found) relative to the ash basins and the water table. 01 Photographs of sediment cores for each sampling location. y Others as appropriate. Page 7-1 P:\Duke Energy Progress. 1026 \ 109. Weatherspoon Ash Basin GW Assessment Plan \CSA Cooling Pond Assessment\Cooling Pond Work Plan\Weatherspoon Cooling Pond Work Plan 18 August 2016.docx Proposed Cooling Pond Assessment Work Plan August 2016 W.H. Weatherspoon Power Plant SynTerra 8.0 PROPOSED SCHEDULE Proposed schedule milestones are as follows: Field work will be initiated within approximately 45 days following NCDEQ final approval of this work plan; and 101 A cooling pond assessment report will be submitted to NCDEQ within approximately 60 days following receipt and validation of all analytical data. Page 8-1 P:\Duke Energy Progress.1026\109. Weatherspoon Ash Basin GW Assessment Plan\CSA Cooling Pond Assessment\Cooling Pond Work Plan\Weatherspoon Cooling Pond Work Plan 18 August 2016.docx Proposed Cooling Pond Assessment Work Plan August 2016 W.H. Weatherspoon Power Plant SynTerra 9.0 REFERENCES Duke Energy, 2014; http://www.duke-energy.com/pdfs/duke-energy-ash-metrics.pdf (Updated Oct. 31, 2014) DWR, July 2016; Letter correspondence from Mr. S.J. Zimmerman (DWR Director) to Mr. H. Sideris (Duke Energy Sr. VP) dated July 8, 2016. E-mail correspondence, July 2016; July 19, 2016 10:03 am E-mail correspondence from Kent Tyndall (Duke Energy Environmental Professional) and Ted Volskay (SynTerra Corporation Senior Scientist). E-mail correspondence, August 2016; August 10, 2016 4:41 pm E-mail correspondence from LaToya Fields Ogallo (Duke Energy Environmental Professional) and Ted Volskay (SynTerra Corporation Senior Scientist). Giese, G.L. Eimers, J.L., and Coble, R.W., 1997 Simulation of Ground -Water Flow in the Coastal Plain Aquifer System of North Carolina, United States Geological Survey Professional Paper 1404-M. S&ME, 2012; Field Exploration Data Report, Progress Energy — Weatherspoon Plant Ash Pond, Lumberton, North Carolina, S&ME Project No. 1054-12-062, June 11, 2012. Stuckey, J.L., 1965; North Carolina: Its Geology and Mineral Resources, Raleigh, North Carolina Department of Conservation and Development, 550p. SynTerra, September 2014; Drinking Water Well and Receptor Survey for W.H. Weatherspoon Power Plant, NPDES Permit# NC0005363; Prepared by SynTerra Corporation, Greenville, South Carolina. SynTerra, November 2014; Supplement to Drinking Water Well and Receptor Survey-W.H. Weatherspoon Power Plant, NPDES Permit# NC0005363; Prepared by SynTerra Corporation, Greenville, South Carolina. SynTerra, December 2014; Proposed Groundwater Assessment Work Plan (Revision 1) — W.H. Weatherspoon Power Plant; Prepared by SynTerra Corporation, Greenville, South Carolina. SynTerra, August 2015; Comprehensive Site Assessment Report — W.H. Weatherspoon Power Plant, Prepared by SynTerra Corporation, Greenville, South Carolina. Page 9-1 P:\Duke Energy Progress.1026\109. Weatherspoon Ash Basin GW Assessment Plan\CSA Cooling Pond Assessment\Cooling Pond Work Plan\Weatherspoon Cooling Pond Work Plan 18 August 2016.docx Proposed Cooling Pond Assessment Work Plan August 2016 W.H. Weatherspoon Power Plant SynTerra SynTerra, November 2015; Corrective Action Plan Part 1— W.H. Weatherspoon Power Plant; Prepared by SynTerra Corporation, Greenville, South Carolina. SynTerra, February 2016; Corrective Action Plan Part 2 — W.H. Weatherspoon Power Plant; Prepared by SynTerra Corporation, Greenville, South Carolina. SynTerra, July 2016; Comprehensive Site Assessment Supplement 1— W.H. Weatherspoon Power Plant; Prepared by SynTerra Corporation, Greenville, South Carolina. usclimatedata.com, July 30, 2016; http://www.usclimatedata.com/climate/lumberton /north-carolina/united-states/usnc04O6, accessed on July 30, 2016. Winner, M.D., Jr., and Coble, R.W., 1989, Hydrogeologic Framework of the North Carolina Coastal Plain Aquifer System: U.S. Geological Survey Open -File Report. Page 9-2 P:\Duke Energy Progress.1026\109. Weatherspoon Ash Basin GW Assessment Plan\CSA Cooling Pond Assessment\Cooling Pond Work Plan\Weatherspoon Cooling Pond Work Plan 18 August 2016.docx Proposed Cooling Pond Assessment Work Plan August 2016 W.H. Weatherspoon Power Plant FIGURES SynTerra � � � 1. ,; , � , I . - I - I � , � � . 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Z, , � 1 4 - I " , LUMBERTON, NORTH CAROLINA It . , , ,,, ii;�._I!",:� -�V,4r.. . . - - -11 I - ,�4 . . . I , '0_1 _.� - , I- I �!v*--, 5W 4,� - Im, 1, W., , 'I � � ;ia� . % . _� I , � � k N, � 01 ii t � _. "I %0,\ -, A 7"k " 1, � "'' ., _-, � - . 4", , - tL 'lot I I �1� � I � I I -1 , , ., . � I :! '. _,�z , -,. - , " 4,-..A--- - - - - -.4 Ilk, IIICL;�. - mw_._ . LJk '% .t. !'�-'_'L � � ki -: 1-11�,, , � �'� 19,17iw" ,; .. . _- � . - - - , * 0_7 . . . . . . . . . , � ra ;1 ; �, -I- I , A V � F 'a Y L / / LR -1 CP -1 BG -2 CP -2 CP -24 7 G � 7 i A AW -6S AW -61 P-19 CP -20 � I PZ -102 I JC -3 1} N AW -5S AW -51 SR -2127 LEGEND PROPOSED WATER AND SEDIMENT SAMPLE le PROPOSED SEDIMENT SAMPLE LOCATION Q PROPOSED GROUND WATER SAMPLE LOCATION A- PROPOSED GROUNDWATER WELL INSTALLATION (SHALLOW, INTERMEDIATE) »#=I RAILROAD 1► — DITCH I STREAM ASH BASIN BOUNDARY DUKE ENERGY PROGRESS WEATHERSPOON PLANT SITE BOUNDARY NOTES: SITE AERIAL ORTHOPHOTOGRAPHY IS DATED APRIL 17,2014. IT WAS OBTAINED FROM WSP. Z ADDITIONAL OFFSITE AERIAL ORTHOPHOTOGRAPHY IS DATED 2013. IT WAS OBTAINED FROM THE NC CENTER FOR GEOGRAPHIC INFORMATION AND ANALYSIS. (http://services.nconemap.gov/) 3 PARCEL BOUNDARY WAS OBTAINED FROM THE NC CENTER FOR GEOGRAPHIC INFORMATION AND ANALYSIS. (http://services.nconemap.gov/) 4 DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANE COORDINATE SYSTEM FIPS 3200 (NAD83/2011). GRAPHIC SCALE 350 0 350 700 1,050 1400 IN FEET 167 ,'DUKE � synTerra ENERGY 148 RIVER STREET, SUITE 220 WEATHERSPOON POWER PLANT GREENVILLE, SC 29601 491 POWER PLANT RD 864-421-9999 LUMBERTON, NORTH CAROLINA www.synterracorp.com FIGURE ES -2 COOLING POND ASSESSMENT SAMPLE LOCATIONS W.H. WEATHERSPOON POWER PLANT LUMBERTON, NORTH CAROLINA f•}`}s .% '"-meg. '� s.;. ii; �.r - `' �.�� ��1 � � I ` �..�' _i}� T��r• , I� � . ti`` '� (,,724, � °'a�1 ° �. 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WEATHERSPOON POWER PLANT I , I , � � e�w_ �!" - t, �,ef 0,01, . , . '. , nl.,�, `5��Ir' I �__ �,_�14!� ,4 k�, � -, , -, I 1 1- � , - Is, ,..;� ,i � , - . . - , � i�i , A" , - 7 5 - t 4 ?11 � -4 yw # 11 '! � �, rrl!� �_.* � , I 'N"13IN" , ,; I __....... , , , , I "�, - , 4 - 11 , 't z�'_, i,_ . ii, I, - , , �, - I'_ . I %0,\ -, .1 . 1 *7 � _'. , * ` " f.- _�tZI�7110�, � _,- , , I _. 't - , _0 OP " , , ,V z4—k- - - "' - '� � � , ,, # 0.� I "*!,��' , , k � , , , LUMBERTON, NORTH CAROLINA . &A 1'1,!�, ,,,f4 _� " "., 4 , lwlvl�a* Q., , - . - � � .:��jik�11_11*1.. I - ,,�7 LJk � , ,�. � � il ,:"Or" , " �� "'Wivio � �.. , , . . . " , t6i� , I m* - . L., %k%."7 "0111111111111l - =,. ro INQUIRY #: 4366192.12 4 N YEAR: 1951 iS[_ EDR 750' N f" K.. 148 RIVER STREET, SUITE 220 GREENVILLE, SOUTH CAROLINA 29601 PHONE PHONE864-44-421-9999 FIGURE 2-1 www.syDRAWNnterrac 1951 AERIAL PHOTOGRAPH DRAWN BY: K. SHECK HECKm ' T.VOLSKAY W. H. WEATHERSPOON POWER PLANT DATE: JULY 29, 2016 DATE . E Weatherspoon synMena LUMBERTON, NORTH CAROLINA BasinGEnssessogress n\CS09 Basin Assessment Plan\CSA Cooling Pond Assessment\Cooling Pond Work Plan\Figures Historical Topographic Map s 410 ynTerra 148 RIVER STREET, SUITE 220 GREENVILLE, SOUTH CAROLINA 29601 PHONE 864-421-9999 www.synterracorp.com DRAWN BY: K. SHECK PROJECT MANAGER: T. VOLSKAY DATE: JULY29,2016 P:\Duke Energy Progress. 1 026\1 09. Weatherspoon Ash Basin GW Assessment Plan\CSA Cooling Pond Assessment\Cooling Pond Work Plan\Figures FIGURE 2-2 1957 USGS TOPOGRAPHIC MAP W. H. WEATHERSPOON POWER PLANT LUMBERTON, NORTH CAROLINA TARGET QUAD SITE NAME: W.H. Weatherspoon CLIENT: SynTerra N NAME: BLADENBORO Power Plant CONTACT: Mark Taylor MAP YEAR: 1957 ADDRESS: POWER PLANT RD INQUIRY#: 4366192.4 Lumberton, NC 28358 RESEARCH DATE: 07/27/2015 SERIES: 15 LAT/LONG: 34.58821-78.9743 SCALE: 1:62500 s 410 ynTerra 148 RIVER STREET, SUITE 220 GREENVILLE, SOUTH CAROLINA 29601 PHONE 864-421-9999 www.synterracorp.com DRAWN BY: K. SHECK PROJECT MANAGER: T. VOLSKAY DATE: JULY29,2016 P:\Duke Energy Progress. 1 026\1 09. Weatherspoon Ash Basin GW Assessment Plan\CSA Cooling Pond Assessment\Cooling Pond Work Plan\Figures FIGURE 2-2 1957 USGS TOPOGRAPHIC MAP W. H. WEATHERSPOON POWER PLANT LUMBERTON, NORTH CAROLINA Progress Energy Carolinas, Inc, NPDES Permit Number NCO005363 Weatherspoon Steam Electric Plant 2009 Renewal Application Attachment 1 Form 1 Item X1 Maps MCeu a r Inita e e x - " ... > .Pu 001 nope r iCr ar a i {1 i IUSGi'- 'uuth Berton (IVC} Quadrvtigle Al9 its Reser Not For Navrt At n /•, i PlantCcot 0 0.4 0.8 3.2 ; . t 2 utiles 148 RIVER STREET, SUITE 220 FIGURE 2-3 GREENVILLE, SOUTH CAROLINA 29601 PHONE 864-421-9999 COOLING POND OUTFALLS www.synterracorp.com DRAWN BY: K. SHECK 2009 NPDES PERMIT NC0005363 PROJECT MANAGER: T. VOLSKAY RENEWAL APPLICATION DATE: JULY 29, 2016 synTerm Energy Assessment n\CS09 Weatherspoon Ash W. H. WEATHERSPOON POWER PLANT Basin GW Assessment Plan\CSPlan\Fngg Pond LUMBERTON, NORTH CAROLINA AssessmentlCoolin Pond Work Plan\Fi ures MIf�aRnCnpe�on Steam Electric Plant Site t LNOCARDLINA 0 0.4 0.8 3.2 ; . t 2 utiles 148 RIVER STREET, SUITE 220 FIGURE 2-3 GREENVILLE, SOUTH CAROLINA 29601 PHONE 864-421-9999 COOLING POND OUTFALLS www.synterracorp.com DRAWN BY: K. SHECK 2009 NPDES PERMIT NC0005363 PROJECT MANAGER: T. VOLSKAY RENEWAL APPLICATION DATE: JULY 29, 2016 synTerm Energy Assessment n\CS09 Weatherspoon Ash W. H. WEATHERSPOON POWER PLANT Basin GW Assessment Plan\CSPlan\Fngg Pond LUMBERTON, NORTH CAROLINA AssessmentlCoolin Pond Work Plan\Fi ures Duke Energy Progress, Inc NPDES Permit Number NCO005363 Weatherwoon Plant 2014 Renewal Application Attachment 1 Form 1 Item XI Maps " 9f l • � °� i.a ar•.r si ■...�rr�+vfir ori � '� � Y i � • 1 � �FYy !� �� «� .1 � +fir � r � is j•� ` � � x CJs -Zr df r (NIQ QundrwKg'Ie 0 0.4 0.8 1.2 16 2 r-rin; 148 RIVER STREET, SUITE 220 FIGURE 2-4 GREENVILLE, SOUTH CAROLINA 29601 PHONE 864-421 -9999 COOLING POND OUTFALL ,(rip www.synterracorp.com DRAWN BY: K.SHECK 2014 NPDES PERMIT NC0005363 DATE T.VOLSKAY RENEWAL APPLICATION DATE: JULY 29, 2016 synTerm BasinGEn Assessment n\CS09 Weatherspoon Ash W. H. WEATHERSPOON POWER PLANT Basin GW Asoolingent Plan\Crk Plan ig Pond LUMBERTON, NORTH CAROLINA Assessment\Conlin Pond Work Plan\Fi ures a q 4: d1r'• p O a _r. k j { S �l s LEGEND "` ' k s F IM BW -1 ,�. 138.24 law 135.98 s 7 a •x .� z:• '°gra ,, �n` 3 �♦ W_1 t,' 114.79 a a 'i sb �• DRY ' �" �'� a-: - S1138.29 y112 138.29 aI �`y; L, .. ASH BASIN 137.09 m ♦ ® ., z w 3 MW 44S MW-44SA , a x CW O.♦1137.42 133.19 ' , "j 108. �,� `.,�. ♦♦ �OB 2 / �, ' MW 2 109.76 09 70 '_ a MW -33S ♦ � � � // / 1-41109.87IW 4 g r :,:♦ 127.64 II / /00 '� 109.64 ' I / 100 ol ' / h, . 108.69 .00 112.44 �yF u i FwC - C8 - !' r AW -1S 120.75 s ,✓.. 'w ibiLt '00 t fl t ♦ 'ws l b w 112.75;: r / Al ♦ a AW 2S � 117.89 ,`�!<,^r-,, �'�S COOLING POND NOTES: WATER LEVELS COLLECTED BY SYNTERRA ON JANUARY 12, 2016. APRIL 17, 2014 AERIAL PHOTOGRAPH OBTAINED FROM WSP GROUP IN CARY NORTH CAROLINA e o ALL SURVEY INFORMATION, PROPERTY LINE AND LANDFILL LIMITS AND BOUNDARIES ARE FROM ARCGIS FILES PROVIDED BY DUKE ENERGY PROGRESS. DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANE COORDINATE SYSTEM RIPS 3200 (NAD 83). GRAPHIC SCALE '• r�' 250 0 250 500 IN FEET r " 148 RIVER STREET, SUITE 220 GREENVILLE, SOUTH CAROLINA 29601 �. wwwNE sycte4ra 99 orp.com Terra DRAWN M J.N GER: TIN DATE: 06/10/2016 PROJECT MANAGER: TED VOLSKAY COOLING POND synLAYOUT: FIG (WL MAP - SURFICIAL) C ,46 a + 71c49 x F• s � a. AW -3S : •�,_�, g.�'�� 109 29 A *-vp .. . w� 77 �k , ! p' -Z 3 Y icy a 1 a 3 YZ� .: FIGURE 4-1 WATER LEVEL MAP - JANUARY 2016 SURFICIAL GROUNDWATER W.H. WEATHERSPOON POWER PLANT LUMBERTON, NORTH CAROLINA LEGEND fFc W-2 � 108.77 COMPLIANCE MONITORING WELL (SURVEYED) WATER LEVEL ELEVATION IN FEET (msl.) k BW-1 138.24 BACKGROUND COMPLIANCE MONITORING WELL (SURVEYED) WATER LEVEL ELEVATION IN FEET (msl.) AW -2S 117.89 CSA MONITORING WELL (SURVEYED) WATER LEVEL ELEVATION IN FEET (msl.) MW 44S 137.42 MONITORING WELL (SURVEYED) WATER LEVEL ELEVATION IN FEET (msl.) WATER LEVEL CONTOUR IN FEET (msl.) h a FLOW DIRECTION (APPROXIMATE) i I j a 4 , DUKE ENERGY PROGRESS PARCEL LINE / / MILE OFFSETFROM COMPLIANCE BOUNDARY FR LIAN F IM BW -1 ,�. 138.24 law 135.98 s 7 a •x .� z:• '°gra ,, �n` 3 �♦ W_1 t,' 114.79 a a 'i sb �• DRY ' �" �'� a-: - S1138.29 y112 138.29 aI �`y; L, .. ASH BASIN 137.09 m ♦ ® ., z w 3 MW 44S MW-44SA , a x CW O.♦1137.42 133.19 ' , "j 108. �,� `.,�. ♦♦ �OB 2 / �, ' MW 2 109.76 09 70 '_ a MW -33S ♦ � � � // / 1-41109.87IW 4 g r :,:♦ 127.64 II / /00 '� 109.64 ' I / 100 ol ' / h, . 108.69 .00 112.44 �yF u i FwC - C8 - !' r AW -1S 120.75 s ,✓.. 'w ibiLt '00 t fl t ♦ 'ws l b w 112.75;: r / Al ♦ a AW 2S � 117.89 ,`�!<,^r-,, �'�S COOLING POND NOTES: WATER LEVELS COLLECTED BY SYNTERRA ON JANUARY 12, 2016. APRIL 17, 2014 AERIAL PHOTOGRAPH OBTAINED FROM WSP GROUP IN CARY NORTH CAROLINA e o ALL SURVEY INFORMATION, PROPERTY LINE AND LANDFILL LIMITS AND BOUNDARIES ARE FROM ARCGIS FILES PROVIDED BY DUKE ENERGY PROGRESS. DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANE COORDINATE SYSTEM RIPS 3200 (NAD 83). GRAPHIC SCALE '• r�' 250 0 250 500 IN FEET r " 148 RIVER STREET, SUITE 220 GREENVILLE, SOUTH CAROLINA 29601 �. wwwNE sycte4ra 99 orp.com Terra DRAWN M J.N GER: TIN DATE: 06/10/2016 PROJECT MANAGER: TED VOLSKAY COOLING POND synLAYOUT: FIG (WL MAP - SURFICIAL) C ,46 a + 71c49 x F• s � a. AW -3S : •�,_�, g.�'�� 109 29 A *-vp .. . w� 77 �k , ! p' -Z 3 Y icy a 1 a 3 YZ� .: FIGURE 4-1 WATER LEVEL MAP - JANUARY 2016 SURFICIAL GROUNDWATER W.H. WEATHERSPOON POWER PLANT LUMBERTON, NORTH CAROLINA Progress Energy Carolinas, Inc. NPOES Permit Number NC0005363 Weathers oon Stearn Electric Plant 2409 Renewal Applicatlon Attachment 2 continued Evaporation Potable Water Sanitary Uvaste S stem System P Metal Cleaning Wastes I Wells I Plant Systems taw Volui»e L I Wastes i Lumber River i F A + .i i 1 River intake i Structure Condenser --- AshSiuice S stem Pleat H Exchan er 1 1 Plant Drains + i 1 Fire Water E Irikemal Intake Svstem structure Q Plant Area Storm Water Runort Ash Pond s Low ilalume Wastes Coal Pile Runoff Secondal Settling K Evaporafon & Basin Seepage MT G C7Separator Cooling Pond B N Outfall 002 utfall001 Combustion Turbine Sde Septic 5_and & Q Tank Gravel Bed Plant Drams Oily Wastes Retention Bars in OWWater Separator J Storm Water Lumber River Outtalk 4 148 RIVER STREET, SUITE 220 FIGURE 4-2 10 GREENVILLE, SOUTH CAROLINA 29601 PHONE 864-421-9999 COOLING POND INFLOWS AND OUTFLOWS vmw.syDRAWNnterrac HECKm 2009 NPDES PERMIT NC0005363 DRAWN BY: K. SHECK PROJECT MANAGER: T. VOLSKAY RENEWAL APPLICATION DATE: JULY 29, 2016 YnTerra P\Duke EnergyProgress.1026\109. WeatherspoonAsh W. H. WEATHERSPOON POWER PLANT Basin GW Assessment Plan\CSA Cooling Pond LUMBERTON NORTH CAROLINA Assessment\Cooling Pond Work Plan\Figures Progress Energy Carolinas, Inc. NPDES Permit NumbereNC0005363 Weathersg_von Steam Electric Plant -- -- 2009 Renewal ARP icatton Attachment 2 Form 2C Item II -A Flows, Sources of Pollution, and Treatment Technologies -Source Estimated Average Flow Comments A 4-16 MGD Make up water`from Lumber River, Maximum rate is 9 12 MGD B 4 03 MGD Non -contact cooling water discharge, Maximum rate is 9 12 MGD C 0 7 MGD Make up for cooling pond, Maximum rate is 912 MGD D 193 MGD Condenser cooling water- all three units operating E 2,400 GPM Maximum make-up rate for fire water system F 1"00 GPD Low volume wastes to the ash pond G 2 1 MGD Ash pond discharge to cooling pond H 191 MGD Condenser discharge to cooling ,pond I 120 GPM Intermittent flow as required J 0 14 MGD Discharge to cooling pond from oillwater separator K 0024 r MGD Estimated -using averageAmly rainfall L 0 14 MGD Variable due to intermittent processes and runoff M 0 ,7 MGD Maxtmurn estimated rate is 1 6,MGD N 0 MGD Pond does not norrhally discharge See Attachment 3 for details 0 0 00125 MGD Sanitary wastes P 50,000 gallevent- Units 1 & 2' 42,000 gal/event - U n it.3 Amounts estimated, Usually evaporated in boiler Q 0 19 MGD Estimated using -average daily rainfall R 0 011 MGD Estimated using average daily rainfall S 4,000 GPD Low volume waste (reverse osmosis reject watef) 148 RIVER STREET, SUITE 220 FIGURE 4-3 GREENVILLE, SOUTH CAROLINA 29601 PHONE 864-421-9999 FLOWS, SOURCES OF POLLUTION, AND TREATMENT www.synterracorp.com DRAWN BY: K. SHECK TECHNOLOGIES -2009 NPDES PERMIT NC0005363 PROJDATE JTMA9,2016 T.VOLSKAY RENEWAL APPLICATION DATE: JULY 29, 2016 synTero BasinGEn Assessment Cooling W. H. WEATHERSPOON POWER PLANT Basin GW Assessment Plan\CSA Cooling Pond Assessment\Cooling Pond Work Plan\Figures LUMBERTON, NORTH CAROLINA Duke Energy Progress, Inc NPDES Permit Number NCO005363 Westhemponn Plant 2014 Renewal Application, Attachment 2 Form 2C Item II -A Flows, Sources of Pollution, and Treatment Technologies 148 RIVER STREET, SUITE 220 FIGURE 4-4 GREENVILLE, SOUTH CAROLINA 29601 PHONE 864-421-9999 COOLING POND INFLOWS AND OUTFLOWS www. synterracorp. com DRAWN BY: K. SHECK 2014 NPDES PERMIT NC0005363 PROJECT MANAGER: T. VOLSKAY DATEJULY 29, 2016 RENEWAL APPLICATION : YnTerra Energy Progress. 1 026\1 Assessment Cooling Pond W. H. WEATHERSPOON POWER PLANT Basin GW Assessment Plan\CSA Cooling Pond LUMBERTON, NORTH CAROLINA Assessment\Cooling Pond Work Plan\Figures Duke Energy Progress, Inc NPDES Permit- Number',NC00053G3 Weathers oon Plant 2014.Renewal'Applicition Attachment 2 -Continued 'Source -Esthnat6d' Average-: Flow . Comments A Q 7 MGD Make up. water from. Lumber. River, Maximum rate is 9 12 MGD B 0 MGD Fire water system C 120'GPV Potable,water service-. intermittent flow as required D .0 0002 -MGD Sanitary wastes E 0 14,MG0 Dischargb-to cooling pond from oil/water separator Ash pond does not.normally discharge See Attachment 3=for F 0 MGD details. G 01-9,MGD Estimated using°average daily rainfall H 0 011.MGD Estimated using average daily rainfall 1 0 MGD Pond does not normally discharge 'See Attachment S.for details ,1 0 7 MGD Maiimum�estimated rate is 1 6 MGD 148 RIVER STREET, SUITE 220 FIGURE 4-5 GREENVILLE, SOUTH CAROLINA 29601 PHONE 864-421-9999 FLOWS, SOURCES OF POLLUTION, AND TREATMENT www.synterracorp.com DRAWN BY: K. SHECK TECHNOLOGIES -2014 NPDES PERMIT NC0005363 PROJDATE JTMA9,2016 T.VOLSKAY RENEWAL APPLICATION DATE: JULY 29, 2016 WnTerm P.\Duke Energy Progress.1026\109. Weathers poon Ash W. H. WEATHERSPOON POWER PLANT Basin GW Assessment Plan\CSA Cooling Pond Assessment\Cooling Pond Work Plan\Figures LUMBERTON, NORTH CAROLINA Progress Energy Carolinas, Inc: NPDES Permit Number NCO006363 Weathers oon Steam Electric Plant 2009.Renewal Application Attachment 4 Form 2C item VI Potential Discharges Not Covered by Analysis Chemical Quantity Frequency Purpose (usedlyr) Hydrazine 165 gal Continuous - when units are a erational Oxygen scavenger in boiler Tnsodium phosphate 1,+000 Ib As needed pH control in boiler Disodium ,phosphate 500 Ib As, needed pH. control in boiler Morpholine ' 275 gal Continuous - when pH control in boiler units are o eratiohal Sodium hypochlorite 12,950 gal As•needed Condenser and heat exchanger biofoulin-q control Sodium, hydroxide 9,000 gal ,As needed Demineralizer regeneration Sodium hydroxide As needed As needed Cooling pond neutralization Sulfuric acid 2,000 gal As needed Demineralizer regeneration Sulfuric acid 19,000 gal. As needed Cooling pond. neutralization Molybdenum trioxide 330 gal As needed Corrosion control in,boiler Sodiums chlofide 8,000 Ib Twice per month Water softener regeneration Sulfur, elemental 75 tdii Continuous - when Unit 3 iso erational Flue gas,conddioning Citric acid, 50% 1,460 gallevent Approximately once per 10 years per unit Boiler cleaning Citric acid, dry 3,500 Iblunitlevent Approximately once Boiler cleaning per 10 years per.unit Ammonium hydroxide 1,560 gal/event Approximately once er1fl years per unitBoiler,cleaning 1,775 16/eveht - 'Sodium Nitrite Units. 1 & 2 Approximately once Boder cleaning 1,450 lb/event - per 10 years per unit _ Unit 3 - Corrosion Inhibitor 55 gal`lunitlevent Approximately once per 10 years per unit Boiler cleaning 475 lb/event — Ammonium bicarbonate Urids; 1 & 2 Approximately once Boiler cleaning 375 lblevent-- per 10 years per unit unit 3 - EDTA, 39%6,000 Approximately once Boder cleaning gal/unit/event per 10 ears per unit Hydrochloric,acid 1,000 gal/event As -needed Condenser cleaning Rodine 213 5 galfevent As needed Condenser cleaning Ammonium bifiuoride 100 lblevent As needed Condenser cleaning 4 148 RIVER STREET, SUITE 220 FIGURE 4-6 GREENVILLE, SOUTH CAROLINA 29601 PHONE 864-421-9999 POTENTIAL DISCHARGES NOT COVERED BY www. synterracorp. conn DRAWN BY: K. SHECK ANALYSIS - 2009 NPDES PERMIT NC0005363 PROJECT MANAGER: T. VOLSKAY DATEJULY 29, 2016 RENEWAL APPLICATION : YnTero Energy Assessment Cooling W. H. WEATHERSPOON POWER PLANT Basin GW Assessment Plan\CSA Cooling Pond LUMBERTON, NORTH CAROLINA Assessment\Cooling Pond Work Plan\Figures Duke Energy Progress, Inc. NPIDES Permit Number NCO005363 Weatherspoon PIant r �. 2014 Renewal Application Attachment 4 Form 2C Item VI Potential Discharges Not Covered by Analysis Chemical Quantity (usedlyr) Frequency Purpose Sodium hydroxide As needed As needed Cooling pond neutralization 5utfuric. acid 19,000 gal As needed Cooling pond neutralization Sandblast Media 500-700 lb As needed Equipment cleaning Rhodamine liquid dye 0.010.03 allevent As needed Performance testing 148 RIVER STREET, SUITE 220 FIGURE 4-7 GREENVILLE, SOUTH CAROLINA 29601 PHONE 864-421-9999 POTENTIAL DISCHARGES NOT COVERED BY wwwsynterracorp.com DRAWN BY: K.SHECK ANALYSIS - 2014 NPDES PERMIT NC0005363 tip DATE T.VOLSKAY RENEWAL APPLICATION DATE: JULY 29, 2016 synTerra BasinGEn Assessment n\CS09 WeatherspoonAsh W. H. WEATHERSPOON POWER PLANT Basin GW Asoolingent Plan\Crk Plan Cooling Pond LUMBERTON, NORTH CAROLINA Assessment\Conlin Pond Work Plan\Fi ures 0 INQUIRY #: 4366192.12 YEAR: 1958 4 N I- 1 = 750' 1 DIR 148 RIVER STREET, SUITE 220 GREENVILLE, SOUTH CAROLINA 29601 PHONE 864-421-9999 FIGURE 4-8 www.syDRAWN K.S ECK 1958 AERIAL PHOTOGRAPH DRAWN BY: K. SHECK PROJECTMANAGER:T. VOLSKAY DATE: JULY 29,9,2016 W. H. WEATHERSPOON POWER PLANT synTerm BasinGEnssess entPl n\CS09 olingPrspoonAsh LUMBERTON NORTH CAROLINA Basin GW Assessment Plan\CSA Cooling Pond 1 Assessment\Cooling Pond Work Plan\Figures Lower Basin Spillway Inlet A? (Weatherspoon-9) x. -12 inch iamete .Origin utlet III p (Reported to be Ab i;t ned) AWW& LOWER BASIN (Weatherspoon)) UPPER BASIN - MIDDLE BASIN 24 -inch Diameter CMP Upper Basin Outlet Structure Y' (Weatherspoon-10) ILLING BASIN -inch Diameter RCP Decant Structure 24 -inch Diameter HDPE Idle Basin Outlet Structure (Weatherspoon-7) A V � F 'a Y L / / LR -1 CP -1 BG -2 CP -2 CP -24 7 G � 7 i A AW -6S AW -61 P-19 CP -20 � I PZ -102 I JC -3 1} N AW -5S AW -51 SR -2127 LEGEND PROPOSED WATER AND SEDIMENT SAMPLE le PROPOSED SEDIMENT SAMPLE LOCATION Q PROPOSED GROUND WATER SAMPLE LOCATION A- PROPOSED GROUNDWATER WELL INSTALLATION (SHALLOW, INTERMEDIATE) »#=I RAILROAD 1► — DITCH I STREAM ASH BASIN BOUNDARY DUKE ENERGY PROGRESS WEATHERSPOON PLANT SITE BOUNDARY NOTES: SITE AERIAL ORTHOPHOTOGRAPHY IS DATED APRIL 17,2014. IT WAS OBTAINED FROM WSP. Z ADDITIONAL OFFSITE AERIAL ORTHOPHOTOGRAPHY IS DATED 2013. IT WAS OBTAINED FROM THE NC CENTER FOR GEOGRAPHIC INFORMATION AND ANALYSIS. (http://services.nconemap.gov/) 3 PARCEL BOUNDARY WAS OBTAINED FROM THE NC CENTER FOR GEOGRAPHIC INFORMATION AND ANALYSIS. (http://services.nconemap.gov/) 4 DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANE COORDINATE SYSTEM FIPS 3200 (NAD83/2011). GRAPHIC SCALE 350 0 350 700 1,050 1400 IN FEET 167 ,'DUKE � synTerra ENERGY 148 RIVER STREET, SUITE 220 WEATHERSPOON POWER PLANT GREENVILLE, SC 29601 491 POWER PLANT RD 864-421-9999 LUMBERTON, NORTH CAROLINA www.synterracorp.com FIGURE 5-1 COOLING POND ASSESSMENT SAMPLE LOCATIONS W.H. WEATHERSPOON POWER PLANT LUMBERTON, NORTH CAROLINA Proposed Cooling Pond Assessment Work Plan August 2016 W.H. Weatherspoon Power Plant TABLES SynTerra TABLE 2-1 NPDES COMPLIANCE WELL GROUNDWATER MONITORING REQUIREMENTS* W.H. WEATHERSPOON POWER PLANT LUMBERTON, NORTH CAROLINA Well Nomenclature Parameter Description Frequency Antimony Chromium Nickel Thallium Arsenic Copper Nitrate Water Level Monitoring Wells BW -1, CW -1, CW - 2, CW -3 March, June, and October Barium Iron pH Zinc Boron Lead Selenium Cadmium Manganese Sulfate Chloride Mercury TDS *Updated to include CAMA parameters in 2015 P:\Duke Energy Progress. 1026\109. Weatherspoon Ash Basin GW Assessment Plan\CSA Cooling Pond Assessment\Cooling Pond Work Plan\Tables\ Table 2-1 GW Parameter.xlsx Page 1 of 1 TABLE 5-1 WATER SAMPLE PARAMETERS AND ANALYTICAL METHODS W.H. WEATHERSPOON POWER PLANT LUMBERTON, NORTH CAROLINA PARAMETER REPORTING LIMIT UNITS METHOD FIELD PARAMETERS H NA SU Field Water Quality Meter Specific Conductance NA µS/cm Field Water Quality Meter Temperature NA oC Field Water Quality Meter Dissolved Oxygen NA m L Field Water Quality Meter Oxidation Reduction Potential NA mV Field Water Quality Meter Turbidity NA INTU lField Water Quality Meter Ferrous Iron NA I m /L IField Test Kit INORGANICSNo,e i Aluminum 0.005 m /L EPA 200.7 or 6010C Antimony 0.001 m L EPA 200.8 or 6020A Arsenic 0.001 m /L EPA 200.8 or 6020A Barium 0.005 m L EPA 200.7 or 6010C Beryllium 0.001 m /L EPA 200.8 or 6020A Boron 0.05 m L EPA 200.7 or 6010C Cadmium 0.001 m /L EPA 200.8 or 6020A Chromium 0.001 m L EPA 200.7 or 6010C Hexavalent Chromium"°te 2 0.00003 mg/L EPA 218.7 Cobalt 0.001 m /L EPA 200.8 or 6020A Copper 0.005 m L EPA 200.7 or 6010C Iron 0.01 m /L EPA 200.7 or 6010C Lead 0.001 m L EPA 200.8 or 6020A Manganese 0.005 m /L EPA 200.7 or 6010C Mercury low level 0.000012 m L EPA 245.7 or 1631 Molybdenum 0.005 m /L EPA 200.7 or 6010C Nickel 0.005 m L EPA 200.7 or 6010C Selenium 0.001 m /L EPA 200.8 or 6020A Strontium 0.005 m L EPA 200.7 or 6010C Thallium low level 0.0002 m /L EPA 200.8 or 6020A Vanadium low level 0.0003 m /L EPA 200.8 or 6020A Zinc 10.005 1 m /L JEPA 200.7 or 6010C ANIONS/CATIONS Alkalinity as CaCO3 20 m /L SM 2320B Bicarbonate 20 m L SM 2320 Calcium 0.01 m /L EPA 200.7 Carbonate 20 m L SM 2320 Chloride 0.1 m /L EPA 300.0 or 9056A Magnesium 0.005 m L EPA 200.7 Methane 0.1 m /L RSK 175 Potassium 0.1 m L EPA 200.7 Sodium 0.05 m /L EPA 200.7 Sulfate 0.1 m L EPA 300.0 or 9056A Sulfide 0.05 m /L SM450OS-D Total Dissolved Solids 25 m L SM 2540C Total Organic Carbon 0.1 m /L SM 5310 Total Suspended Solids 2 m /L SM 2450D RADIOLOGICAL Uranium"°te z 0.00005 mg/L ISW846 3010A/6020A Radium"°te z 1 1 pCi/L I EPA 904.0 or 9320 or 903.1 Notes: 1. Constituents in wastewater, surface water, and groundwater samples will be analyzed for total and dissolved concentrations. 2. Groundwater analysis only. NA indicates not applicable. P \Duke Energy Progress. 1026\109. Weatherspoon Ash Basin GW Assessment Plan\CSA Cooling Pond Assess ment\Cooling Pond Work Plan\Tables\Table 5-1- Cooling Pond Water Sample Analytical Parameters TABLE 5-2 SEDIMENT SAMPLE PARAMETERS AND ANALYTICAL METHODS W.H. WEATHERSPOON POWER PLANT DUKE ENERGY PROGRESS, INC., LUMBERTON, NORTH CAROLINA INORGANIC COMPOUNDS UNITS METHOD Aluminum mg/kg EPA 6010C Antimony mg/kg EPA 6020A Arsenic mg/kg EPA 6020A Barium mg/kg EPA 6010C Beryllium mg/kg EPA 6020A Boron mg/kg EPA 6010C Cadmium mg/kg EPA 6020A Calcium mg/kg EPA 6010C Chloride mg/kg EPA 9056A Chromium mg/kg EPA 6010C Cobalt mg/kg EPA 6020A Copper mg/kg EPA 6010C Iron mg/kg EPA 6010C Lead mg/kg EPA 6020A Magnesium mg/kg EPA 6010C Manganese mg/kg EPA 6010C Mercury mg/kg EPA Method 7470A/7471B Molybdenum mg/kg EPA 6010C Nickel mg/kg EPA 6010C Nitrate as Nitrogen mg/kg EPA 9056A pH SU EPA 9045D Potassium mg/kg EPA 6010C Selenium mg/kg EPA 6020A Sodium mg/kg EPA 6010C Strontium mg/kg EPA 6010C Sulfate mg/kg EPA 9056A Thallium (low level) (SPLP Extract only) mg/kg EPA 6020A Vanadium mg/kg EPA 6020A Zinc mg/kg EPA 6010C Sediment Specific Samples Cation exchange capacity meg/100g EPA 9081 Particle size distribution Percent solids Percent organic matter % EPA/600/R-02/069 Redox potential mV Faulkner et al. 1898 Notes: 1. Soil samples to be analyzed for Total Inorganics using USEPA Methods 6010/6020 and pH using USEPA Method 9045, as noted above. 2. Ash samples to be analyzed for Total Inorganics using USEPA Methods 6010/6020 and pH using USEPA Method 9045; select ash samples will also be analyzed for leaching potential using SPLP Extraction Method 1312 in conjunction with USEPA Methods 6010/6020. P:\Duke Energy Progress. 1026\109. Weatherspoon Ash Basin GW Assessment Plan\CSA Cooling Pond Assessment\Cooling Pond Worl< Plan\Tables\Table 5-2 - Cooling Pond Sediment Sample Analytical Parameters.xlsx Proposed Cooling Pond Assessment Work Plan August 2016 W.H. Weatherspoon Power Plant APPENDIX A NCDWR REQUEST FOR COOLING POND ASSESSMENT SynTerra Water Resources ENVIRONMENTAL QUALITY PAT MCCRORY Governor DONALD R. VAN DER VAART Secretary S. JAY ZIMMERMAN Director July 8, 2016 Mr. Harry Sideris Senior Vice President Environment, Health, and Safety Duke Energy 526 South Church Street Mail Code EC3XP Charlotte, NC 28202 Subject: Additional Site Assessment Required James E. Rogers Energy Complex (Formerly Cliffside Steam Station) NPDES Permit NC0005088 — Rutherford and Cleveland Counties Roxboro Steam Electric Plant NPDES Permit NC0003425 — Person County W. H. Weatherspoon Power Plant NPDES Permit NC0005363 — Robeson County Dear Mr. Sideris: The North Carolina Department of Environmental Quality's Division of Water Resources (DWR) requests Duke Energy (Duke) provide data and conduct additional site assessment as needed to characterize the distribution of coal ash residuals (CCR) at confirmed and potential coal ash disposal areas at the James E. Rogers Energy Complex, Roxboro Steam Electric Plant, and the W.H. Weatherspoon Plant. Descriptions and approximate locations of these areas are provided below. The additional assessments shall be included as part of the on-going Comprehensive Site Assessments (CSAs) for each of the subject facilities. Please be advised that these areas are to be included in an updated Groundwater Assessment Plan (GAP) that conforms with the North Carolina Department of Environment and Natural Resources Notice of Regulatory Requirements letter dated August 13, 2014 and Comprehensive Coal Ash Management Act (CAMA). Site activities shall follow the requirements under 15A NCAC 02L .0106(g). An assessment of surface water quality for those areas that have impounded or flowing water shall also be conducted. Area(s) of Wetness (AOW) related to these disposal areas should be assessed pursuant to CAMA §130A-309.212. State afNorth Carolina I Environmental Quality I Water Resources 1611 Mail service Center I Raleigh, North Caroline 27699-1611 919 707 9000 Additional Site Assessment Required J u ly 8, 2016 The results of the characterization conducted to date in addition to pertinent historical records and detailed plans for additional site assessments must provide adequate detail to allow technical review of the proposed actions shall be provided to the DWR. GAPS are due to the DWR Central Office and the appropriate DWR Regional Office no later than August 19, 2016. Results of related investigations may be submitted as a CSA Addendum Report at a later date. In addition to performing site assessment activities, facility site maps must be updated with the revised waste boundaries and proposed compliance boundaries established according to 15A NCAC 02L Section .0107. A letter requesting the approval of the new compliance boundaries shall be submitted to the appropriate DWR Central Office later than August 19, 2016. The following are background information and approximate locations of the identified areas at each of the subject sites requiring additional assessment: James E. Rogers Energy Complex On November 16, 2015, Duke communicated orally to DWR that a historical coal ash disposal area located was identified just north of the Broad River and west of the switchyard at the James E. Rogers Energy Complex. Duke staff estimated the area to be approximately 3 acres in size, but stated that the full extent of the area is unknown. The approximate location of the area is shown below encircled. This area was not addressed in the Groundwater Assessment Plan (GAP), Comprehensive Site Assessment (CSA) report, or Corrective Action Plans (CAPS) submitted to DWR. Characterization of CCR within the footprint of this disposal area was confirmed by Duke; however, no data related to this disposal area has been provided to DWR at this time. 21 Page Additional Site Assessment Required July 8, 2016 Roxboro Steam Electric Plant Area 1 —This area was discovered by Duke and presented orally to DWR during a joint meeting on January 14, 2016. This area is located directly east of the East Ash Basin and was subsequently named by DWR the "Unnamed Eastern Extension Basin" for purposes of prioritization ranking according to the Coal Ash Management Act. This area shall also include the discharge canal that runs north along the eastern side of the East Ash Basin. This area was not addressed in the GAP, CSA report, or CAPs submitted to DWR. The approximate location of the area is shown below encircled. Area 2 — This area is located directly south of the West Ash Basin and encompasses the three "fingers" of the dammed watershed and the drainage canal that runs north along the west side of the West Ash Basin. The drainage canal should be assessed for the presence of coal ash and surface water standards. Based on site visits and information presented in the CSA and CAP reports, DWR suspects that coal ash may be present in this area. This area was not addressed in the GAP, CSA report, or CAPS submitted to DWR. The approximate location of the areas is shown below encircled. 31 Page Additional Site Assessment Required July 8, 2016 W. H. Weatherspoon Power Plant Duke informed DWR orally at a joint meeting on October 21, 2015, that the cooling pond may contain coal ash. Also, according to the CSA Report for the facility, the cooling pond is part of the treatment process before the effluent is discharged through the NPDES outfall. This area was not addressed in the GAP, CSA report, or CAPS submitted to DWR; however, Duke has stated that an investigation is currently underway. The approximate location of the area is shown below encircled. 41 Page Additional Site Assessment Required J u ly 8, 2016 BOUND/J!Y WASTE BWNUTRY 4 F: If you have any questions, please feel free to contact Steve Lanter at (919) 807-6444. Sincerely, S. y erman, P.G., Director Division of Water Resources cc: Landon Davidson — Asheville Regional Office Supervisor Danny Smith — Raleigh Regional Office Supervisor Belinda Henson — Fayetteville Regional Office Supervisor Jeff Poupart, DWR Water Quality Permitting Section Chief WQROS Central File Copy 51 Page Proposed Cooling Pond Assessment Work Plan August 2016 W.H. Weatherspoon Power Plant APPENDIX B NPDES PERMIT NC0005363 SynTerra Permit NC0005363 STATE OF NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES DIVISION OF WATER QUALITY PERMIT TO DISCHARGE WASTEWATER UNDER THE NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM In compliance with the provisions of North Carolina General Statute 143-215.1, other lawful standards and regulations promulgated and adopted by the North Carolina Environmental Management Commission, and the Federal Water Pollution Control Act, as amended, Carolina Power £t Light Company d/b/a Progress Energy Carolinas, Inc. is hereby authorized to discharge wastewater from a facility located at: Weatherspoon Steam Electric Plant 491 Power Plant Road Lumberton, North Carolina Robeson County to receiving waters designated as Lumber River in the Lumber River Basin in accordance with effluent limitations, monitoring requirements, and other conditions set forth in Parts I, II, III, and IV hereof. The permit shall become effective January 1, 2010. This permit and the authorization to discharge shall expire at midnight on July 31, 2014. Signed this day November 20, 2009. Original signed by Gil Vinzani Coleen H. Sullins, Director Division of Water Quality By Authority of the Environmental Management Commission Permit NC0005363 SUPPLEMENT TO PERMIT COVER SHEET All previous NPDES Permits issued to this facility, whether for operation or discharge are hereby revoked. As of this permit issuance, any previously issued permit bearing this number is no longer effective. Therefore, the exclusive authority to operate and discharge from this facility arises under the permit conditions, requirements, terms, and provisions included herein. Carolina Power £t Light Company d/b/a Progress Energy Carolinas, Inc. is hereby authorized to: 1. Continue to discharge recirculated cooling water, coal pile runoff, stormwater runoff, ash sluice water, domestic wastewater, chemical metal cleaning wastewater, low volume wastewater including reject water from operation of a reverse osmosis water treatment unit from a 225 acre cooling pond (Outfall 001 - Cooling Pond) under extremely severe weather conditions or during pond maintenance, and continue to discharge non -contact cooling water from heat exchanger units (Outfall 002- Non contact cooling water), from a facility located at Weatherspoon Steam Electric Plant, 491 Power Plant Road, Lumberton, Robeson County, and; 2. Discharge (from Outfalls 001 and 002) into the Lumber River, a Class C -Swamp water in the Lumber River Basin, at the locations specified on the attached map. 3. Discharge of Stormwater from Outfalls SW -1, SW -2, and SW -3. Permit NC0005363 Permit NC0005363 _ Aitude: _ongitude: SCS Quad:_ 4iver Basin: Receiving Stream River Stream Class: - 34° 3-�' 78° 58" 1235W 03-07-51 LurnbLi C-Swarnp N1 Progress Energy Weaitherspoon Elec' Pla rat Robeson County NCO005363 Permit NC0005363 A.(1) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS [001 ] Beginning on the effective date of this permit and lasting until expiration, the Permittee is authorized to discharge recirculated cooling water, coal pile runoff, stormwater runoff, ash sluice water, treated domestic wastewater, chemical metal cleaning wastewater, and low volume wastewater including reject water from operation of an R. 0. unit from Outfall 001 under specified conditions'. Such discharges shall be limited and monitored by the Permittee as specified below: EFFLUENT CHARACTERISTICS EFFLUENT LIMITATIONS MONITORING REQUIREMENTS Monthly Average Weekly Average Daily Maximum Measurement Frequency Sample Type Sample Location 2 Flow Each Event Estimate E Oil and Grease Each Event Grab E Total Suspended Solids Each Event Grab E Total Copper Each Event Grab E Total Iron Each Event Grab E Total Arsenic Each Event Grab E Total Selenium Each Event Grab E pH 3 Each Event Grab E Temperature 4 Each Event Grab E Acute Toxicity 5 Episodic Grab E Footnotes: 1. This discharge is permitted only in cases caused by extreme rainfall; where unavoidable to prevent loss of life, severe property damage, or damage to the cooling pond structure; or maintenance activities. In the event a discharge occurs, the permittee shall inform the North Carolina Division of Water Quality by telephone within 48 hours after the discharge event. The permittee shall also provide the Division with the following written information within ten (10) days of the discharge: a) a description and cause of the discharge; and b) the period of discharge, including approximate dates and times, the anticipated period the discharge is expected to continue, and steps being taken to reduce, eliminate, and prevent recurrence of the discharge. The permittee shall take all reasonable steps to minimize any adverse impact to receiving waters from the discharge, including such monitoring as is necessary to determine the environmental impact of the discharge. 2. Sample Location: E= Effluent at discharge spillway. 3. The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units. Permit NC0005363 4. The temperature of the effluent shall be such as not to cause an increase in the temperature of the receiving stream of more than 2.8°C and in no case cause the ambient water temperature to exceed 32°C. 5. Acute Episodic Toxicity Testing (24-hour Fathead Minnow); refer to Section A(3). Permit NC0005363 A. (2) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS [002] Beginning on the effective date of this permit and lasting until expiration, the Permittee is authorized to discharge non -contact cooling water from Outfall 002. Such discharges shall be limited and monitored by the Permittee as specified below: EFFLUENT CHARACTERISTICS EFFLUENT LIMITATIONS MONITORING REQUIREMENTS Monthly Average Weekly Average Daily Maximum Measurement Frequency Sample Type Sample Locationl Flow Weekly Pump Logs E Temperature 2 Quarterly Grab E,U,D Total Residual Chlorine 3 200 pg/1 Monthly Grab E Time of Chlorine Addition 3 120 min/day/unit Daily Logs E pH Quarterly Grab E Footnotes: Sample Locations: E- Effluent; U- Upstream, approx. 1/4 mile above outfall, D - Downstream, approx. 1/4 mile below outfall. The temperature of the effluent shall be such as not to cause an increase in the temperature of the receiving stream of more than 2.8°C and in no case cause the ambient water temperature to exceed 32°C. Monitoring requirements apply only if chlorine is added to the treatment system. THERE SHALL BE NO DISCHARGE OF FLOATING SOLIDS OR VISIBLE FOAM IN OTHER THAN TRACE AMOUNTS. Permit NC0005363 A. (3) ACUTE TOXICITY MONITORING (EPISODIC) The permittee shall conduct FIVE acute toxicity tests using protocols defined as definitive in E.P.A. Document EPA/600/4-90/027 entitled "Methods for Measuring the Acute Toxicity of Effluents to Freshwater and Marine Organisms." The monitoring shall be performed as a Fathead Minnow (Pimephales promelas) 24 hour static test. Effluent samples for self- monitoring purposes must be obtained below all waste treatment. Sampling and subsequent testing will occur during the first five discrete discharge events after the effective date of this permit. After monitoring of the first five toxicity tests, the permittee will conduct one test annually, with the annual period beginning in January of the next calendar year. The annual test requirement must be performed and reported by June 30. If no discharge occurs by June 30, notification will be made to the Division within 2 weeks after June 30. Toxicity testing will be performed on the next discharge event for the annual test requirement. The parameter code for this test is TAE6C. All toxicity testing results required as part of this permit condition will be entered on the Effluent Discharge Form (MR -1) for the month in which it was performed, using the appropriate parameter code. Additionally, DWQ Form AT -1 (original) is to be sent to the following address: Attention: North Carolina Division of Water Quality Environmental Sciences Section 1621 Mail Service Center Raleigh, North Carolina 27699-1621 Completed Aquatic Toxicity Test Forms shall be filed with the Environmental Sciences Section no later than 30 days after the end of the reporting period for which the report is made. Test data shall be complete and accurate and include all supporting chemical/ physical measurements performed in association with the toxicity tests, as well as all dose/response data. Total residual chlorine of the effluent toxicity sample must be measured and reported if chlorine is employed for disinfection of the waste stream. Should any test data from either these monitoring requirements or tests performed by the North Carolina Division of Water Quality indicate potential impacts to the receiving stream, this permit may be re -opened and modified to include alternate monitoring requirements or limits. NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum control organism survival and appropriate environmental controls, shall constitute an invalid test and will require immediate follow-up testing to be completed no later than the last day of the month following the month of the initial monitoring. Permit NC0005363 A. (4.) BIOCIDE CONDITION The permittee shall not discharge any biocides that have not been previously approved in conjunction with the permit application. For biocides not previously approved by the Division of Water Quality, the permittee shall notify the Director in writing prior to use of these biocides. Completion of Biocide Worksheet Form 101 is not necessary for those outfalls with toxicity testing requirements. A.(5) Cooling Water Intake Structure (CWIS) The Weatherspoon Plant operates a closed -cycle condenser cooling system and therefore continues to be in compliance with Section 316(b) requirements. Permit NC0005363 B. (1) STORMWATER PERMIT REQUIREMENTS Section A: Stormwater Permit Coverage During the period beginning on the effective date of the permit and lasting until expiration, the permittee is authorized to discharge stormwater associated with industrial activity. Such discharges shall be controlled, limited and monitored as specified in this permit. If industrial materials and activities are not exposed to precipitation or runoff as described in 40 CFR 5122.26(8), the facility may qualify for a No Exposure Exclusion from NPDES stormwater discharge permit requirements. Any owner or operator wishing to obtain a No Exposure Certification must submit a No Exposure Certification N01 form to the Division; must receive approval by the Division; must maintain no exposure conditions unless authorized to discharge under a valid NPDES stormwater permit; and must reapply for the No Exposure Exclusion once every five (5) years. Section B: Stormwater Permitted Activities Until this permit expires or is modified or revoked, the permittee is authorized to discharge stormwater to the surface waters of North Carolina or separate storm sewer system that has been adequately treated and managed in accordance with the terms and conditions of this individual permit. All stormwater discharges shall be in accordance with the conditions of this permit. Any other point source discharge to surface waters of the state is prohibited unless it is an allowable non-stormwater discharge or is covered by this or another permit, authorization, or approval. The stormwater discharges allowed by this individual permit shall not cause or contribute to violations of Water Quality Standards. This permit does not relieve the permittee from responsibility for compliance with any other applicable federal, state, or local law, rule, standard, ordinance, order, judgment, or decree. B. (2) STORMWATER POLLUTION PREVENTION PLAN The Permittee shall develop a Stormwater Pollution Prevention Plan, herein after referred to as the Plan. This Plan shall be considered public information in accordance with B. (6) Standard Conditions, Section E, Paragraph 3 of this individual permit. The Plan shall include, at a minimum, the following items: Site Plan. The site plan shall provide a description of the physical facility and the potential pollutant sources which may be expected to contribute to contamination of stormwater discharges. The site plan shall contain the following: Permit NC0005363 (a) A general location map (USGS quadrangle map or appropriately drafted equivalent map), showing the facility's location in relation to transportation routes and surface waters, the name of the receiving water(s) to which the stormwater outfall(s) discharges, or if the discharge is to a municipal separate storm sewer system, the name of the municipality and the ultimate receiving waters, and accurate latitude and longitude of the point(s) of discharge. The general location map (or alternatively the site map) shall identify whether each receiving water is impaired (on the state's 303(d) list of impaired waters) or is located in a watershed for which a TMDL has been established, and what the parameter(s) of concern are. North Carolina's 303(d) List can be found here: http://h2o.enr.state.nc.us/tmdl/Genera1_303d.htm#Downloads North Carolina TMDL documents can be found here: http://h2o.enr.state.nc.us/tmdI/TMDL list.htm#Fi nal_TMDLs. (b) A narrative description of storage practices, loading and unloading activities, outdoor process areas, dust or particulate generating or control processes, and waste disposal practices. A narrative description of the potential pollutants which could be expected to be present in the stormwater discharge from each outfall. (c) A site map drawn to scale (including a distance legend) showing: the site property boundary, the stormwater discharge outfalls, all on-site and adjacent surface waters and wetlands, industrial activity areas (including storage of materials, disposal areas, process areas, loading and unloading areas, and haul roads), site topography, all drainage features and structures, drainage areas for each outfall, direction of flow in each drainage area, industrial activities occurring in each drainage area, buildings, existing BMPs, and impervious surfaces. The site map must indicate the percentage of each drainage area that is impervious. (d) A list of significant spills or leaks of pollutants that have occurred at the facility during the three (3) previous years and any corrective actions taken to mitigate spill impacts. (e) Certification that the stormwater outfalls have been evaluated for the presence of non-stormwater discharges. The certification statement will be signed in accordance with the requirements found in B. (6) Standard Conditions, Section B, Paragraph 3. The permittee shall re -certify annually that the stormwater outfalls have been evaluated for the presence of non- stormwater discharges. 2. Stormwater Management Plan. The stormwater management plan shall contain a narrative description of the materials management practices employed which control or minimize the exposure of significant materials to stormwater, including structural Permit NC0005363 and nonstructural measures. The stormwater management plan, at a minimum, shall incorporate the following: (a) Feasibility Study. A review of the technical and economic feasibility of changing the methods of operations and/or storage practices to eliminate or reduce exposure of materials and processes to stormwater. Wherever practical, the permittee shall prevent exposure of all storage areas, material handling operations, and manufacturing or fueling operations. In areas where elimination of exposure is not practical, the stormwater management plan shall document the feasibility of diverting the stormwater runoff away from areas of potential contamination. (b) Secondary Containment Requirements and Records. Secondary containment is required for: bulk storage of liquid materials; storage in any amount of Section 313 of Title III of the Superfund Amendments and Reauthorization Act (SARA) water priority chemicals; and storage in any amount of hazardous substances, in order to prevent leaks and spills from contaminating stormwater runoff. A table or summary of all such tanks and stored materials and their associated secondary containment areas shall be maintained. If the secondary containment devices are connected directly to stormwater conveyance systems, the connection shall be controlled by manually activated valves or other similar devices (which shall be secured closed with a locking mechanism), and any stormwater that accumulates in the containment area shall be at a minimum visually observed for color, foam, outfall staining, visible sheens and dry weather flow, prior to release of the accumulated stormwater. Accumulated stormwater shall be released if found to be uncontaminated by the material stored within the containment area. Records documenting the individual making the observation, the description of the accumulated stormwater, and the date and time of the release shall be kept for a period of five years. (c) BMP Summary. A listing of site structural and non-structural Best Management Practices (BMP) shall be provided. The installation and implementation of BMPs shall be based on the assessment of the potential for sources to contribute significant quantities of pollutants to stormwater discharges and data collected through monitoring of stormwater discharges. The BMP Summary shall include a written record of the specific rationale for installation and implementation of the selected site BMPs. The BMP Summary shall be reviewed and updated annually. 3. Spill Prevention and Response Plan. The Spill Prevention and Response Plan (SPRP) shall incorporate an assessment of potential pollutant sources based on a materials inventory of the facility. Facility personnel (or the team) responsible for implementing the SPRP shall be identified in a written list incorporated into the SPRP and signed and dated by each individual acknowledging their responsibilities for the plan. A responsible person shall be on-site at all times during facility operations that have the Permit NC0005363 potential to contaminate stormwater runoff through spills or exposure of materials associated with the facility operations. The SPRP must be site stormwater specific. Therefore, an oil Spill Prevention Control and Countermeasure plan (SPCC) may be a component of the SPRP, but may not be sufficient to completely address the stormwater aspects of the SPRP. The common elements of the SPCC with the SPRP may be incorporated by reference into the SPRP. 4. Preventative Maintenance and Good Housekeeping Program. A preventative maintenance and good housekeeping program shall be developed. The program shall list all stormwater control systems, stormwater discharge outfalls, all on-site and adjacent surface waters and wetlands, industrial activity areas (including material storage areas, material handling areas, disposal areas, process areas, loading and unloading areas, and haul roads), all drainage features and structures, and existing structural BMPs. The program shall establish schedules of inspections, maintenance, and housekeeping activities of stormwater control systems, as well as facility equipment, facility areas, and facility systems that present a potential for stormwater exposure or stormwater pollution. Inspection of material handling areas and regular cleaning schedules of these areas shall be incorporated into the program. Timely compliance with the established schedules for inspections, maintenance, and housekeeping shall be recorded in writing and maintained in the SPPP. 5. Employee Training. Training programs shall be developed and training provided at a minimum on an annual basis for facility personnel with responsibilities for: spill response and cleanup, preventative maintenance activities, and for any of the facility's operations that have the potential to contaminate stormwater runoff. Facility personnel (or team) responsible for implementing the training shall be identified, and their annual training shall be documented by the signature of each employee trained. 6. Responsible Party. The Stormwater Pollution Prevention Plan shall identify a specific position(s) responsible for the overall coordination, development, implementation, and revision to the Plan. Responsibilities for all components of the Plan shall be documented and position assignments provided. 7. Plan Amendment. The permittee shall amend the Plan whenever there is a change in design, construction, operation, or maintenance which has a significant effect on the potential for the discharge of pollutants to surface waters. All aspects of the Stormwater Pollution Prevention Plan shall be reviewed and updated on an annual basis. The annual update shall include an updated list of significant spills or leaks of pollutants for the previous three years, or the notation that no spills have occurred. The annual update shall include re -certification that the stormwater outfalls have been evaluated for the presence of non-stormwater discharges. Each annual update shall include a re-evaluation of the effectiveness of the BMPs listed in the BMP Summary of the Stormwater Management Plan. Permit NC0005363 The Director may notify the permittee when the Plan does not meet one or more of the minimum requirements of the permit. Within 30 days of such notice, the permittee shall submit a time schedule to the Director for modifying the Plan to meet minimum requirements. The permittee shall provide certification in writing (in accordance with B. (6) Standard Conditions, Section B, Paragraph 5) to the Director that the changes have been made. 8. Facility Inspections. Inspections of the facility and all stormwater systems shall occur as part of the Preventative Maintenance and Good Housekeeping Program at a minimum on a semi-annual schedule, once during the first half of the year (January to June), and once during the second half (July to December), with at least 60 days separating inspection dates (unless performed more frequently than semi-annually). These facility inspections are different from, and in addition to, the stormwater discharge characteristic monitoring required in B. (3), and B. (4) of this permit. 9. Implementation. The permittee shall implement the Plan. Implementation of the Plan shall include documentation of all monitoring, measurements, inspections, maintenance activities, and training provided to employees, including the log of the sampling data and of actions taken to implement BMPs associated with the industrial activities, including vehicle maintenance activities. Such documentation shall be kept on-site for a period of five years and made available to the Director or the Director's authorized representative immediately upon request. B. (3) ANALYTICAL MONITORING REQUIREMENTS Analytical monitoring of stormwater discharges shall be performed as specified in Table 1. All analytical monitoring shall be performed during a representative storm event. The required monitoring will result in a minimum of nine analytical samplings being conducted over the term of the permit at each stormwater discharge outfall (SDO), unless representative outfall status has been granted. A representative storm event is a storm event that measures greater than 0.1 inches of rainfall. The time between this storm event and the previous storm event measuring greater than 0.1 inches must be at least 72 hours. A single storm event may have a period of no precipitation of up to 10 hours. For example, if it rains but stops before producing any collectable discharge, a sample may be collected if the next rain producing a discharge begins within 10 hours. Permit NC0005363 Table 1. Analytical Monitoring Requirements Discharge Characteristics Units Measurement Frequencyl Sample Type2 Sample Location3 40 CFR Part 423 Appendix A: 13 Priority Pollutant Metals (Ag, As, Be, Cd, Cr, Cu, Hg, Ni, Pb, Sb, Se, Tl, Zn )4 pg/l semi-annual Grab SDO Al Pg/1 semi-annual Grab SDO B pg/l semi-annual Grab SDO COD mg/1 semi-annual Grab SDO TSS Mg/1 semi-annual Grab SDO Sulfate mg/1 semi-annual Grab SDO Oil and Grease (OEtG) mg/1 semi-annual Grab SDO pH standard I semi-annual Grab SDO Total Rainfalls inches I semi-annual Rain Gauge Footnotes: 1 Measurement Frequency: Twice per year during a representative storm event, for each year until either another permit is issued for this facility or until this permit is revoked or rescinded. If at the end of this permitting cycle the permittee has submitted the appropriate paperwork for a renewal permit before the submittal deadline, the permittee will be considered for a renewal application. The applicant must continue semi-annual monitoring until the renewed permit is issued. See Table 2 for schedule of monitoring periods through the end of this permitting cycle. 2 If the stormwater runoff is controlled by a stormwater detention pond, a grab sample of the discharge from the pond shall be collected within the first 30 minutes of discharge. 3 Sample Location: Samples shall be collected at each stormwater discharge outfall (SDO) unless representative outfall status has been granted. 4 Mercury shall be analyzed by EPA Low-level detection method 1631 E. This method also requires a field blank be analyzed. A benchmark does not apply; however, values above 0.012 ug/1 should be noted on annual SDO DMR reports to the Regional Office. 5 For each sampled representative storm event the total precipitation must be recorded. An on-site rain gauge or local rain gauge reading must be recorded. The permittee shall complete the minimum nine analytical samplings in accordance with the schedule specified below in Table 2. A minimum of 60 days must separate each sample date unless monthly monitoring has been instituted under a Tier Two response. Permit NC0005363 Table 2. Monitoring Schedule Monitoring period 1,2 Sample Number Start End Year 1 - Period 1 1 January 1, 2010 June 30, 2010 Year 1 - Period 2 2 July 1, 2010 December 31, 2010 Year 2 - Period 1 3 January 1, 2011 June 30, 2011 Year 2 - Period 2 4 July 1, 2011 December 31, 2011 Year 3 - Period 1 5 January 1, 2012 June 30, 2012 Year 3 - Period 2 6 July 1, 2012 December 31, 2012 Year 4 - Period 1 7 January 1, 2013 June 30, 2013 Year 4 - Period 2 8 July 1, 2013 December 31, 2013 Year 5 - Period 1 9 January 1, 2014 July 31, 2014 Fnntnntpt Maintain semi-annual monitoring during permit renewal process. The applicant must continue semi- annual monitoring until the renewed permit is issued. If no discharge occurs during the sampling period, the permittee must submit a monitoring report indicating "No Flow" within 30 days of the end of the six-month sampling period. The permittee shall report the analytical results from the first sample with valid results within the monitoring period. In addition, a separate signed Annual Summary DMR copy shall be submitted to the local DWQ Regional Office (RO) by March 1 of each year. The permittee shall compare monitoring results to the benchmark values in Table 3. The benchmark values in Table 3 are not permit limits but should be used as guidelines for the permittee's Stormwater Pollution Prevention Plan (SPPP). Exceedences of benchmark values require the permittee to increase monitoring, increase management actions, increase record keeping, and/or install stormwater Best Management Practices (BMPs) in a tiered program. See below the descriptions of Tier One and Tier Two. Table 3. Benchmark Values for Analytical Monitoring Discharge Characteristics Units Benchmark Aluminum mg/l 0.75 Antimony mg/l 0.09 Arsenic mg/l 0.36 Beryllium mg/l 0.07 Boron N/A N/A Cadmium mg/l 0.001 Chromium mg/l 1 Permit NC0005363 Discharge Characteristics Units Benchmark Copper mg/l 0.007 Lead mg/l 0.03 Mercury ng/l N/A Nickel mg/l 0.26 Selenium mg/l 0.056 Silver mg/l 0.001 Thallium N/A N/A Zinc mg/l 0.067 COD mg/l 120 TSS mg / l 100 Sulfate mg/l 500 Oil and Grease (OEtG) mg/l 30 pH (see footnote 1) Standard 6- 91 Fontnotes* 1 If pH values outside this range are recorded in sampled stormwater discharges, but ambient rainfall data indicate precipitation pH levels are within + 0.1 standard units of the measured discharge values or lower, then the lower threshold of this benchmark range does not apply. Readings from an on-site or local rain gauge (or local precipitation data) must be documented to demonstrate background concentrations were below the benchmark pH range. Permit NC0005363 Tier One If: The first valid sampling results are above a benchmark value, or outside of the benchmark range, for any parameter at any outfall; Then: The permittee shall: 1. Conduct a stormwater management inspection of the facility within two weeks of receiving sampling results. 2. Identify and evaluate possible causes of the benchmark value exceedence. 3. Identify potential, and select the specific: source controls, operational controls, or physical improvements to reduce concentrations of the parameters of concern, or to bring concentrations to within the benchmark range. 4. Implement the selected actions within two months of the inspection. 5. Record each instance of a Tier One response in the Stormwater Pollution Prevention Plan. Include the date and value of the benchmark exceedence, the inspection date, the personnel conducting the inspection, the selected actions, and the date the selected actions were implemented. Tier Two If: During the term of this permit, the first valid sampling results are above the benchmark values, or outside of the benchmark range, for any specific parameter at a specific discharge outfall two times in a row (consecutive): Then: The permittee shall: 1. Repeat all the required actions outlined above in Tier One. 2. Immediately institute monthly monitoring for all parameters (except mercury) at every outfall where a sampling result exceeded the benchmark value for two consecutive samples. Monthly (analytical and qualitative) monitoring shall continue until three consecutive sample results are below the benchmark values, or within the benchmark range, for all parameters at that outfall. 3. If no discharge occurs during the sampling period, the permittee is required to submit a monthly monitoring report indicating "No Flow." 4. Maintain a record of the Tier Two response in the Stormwater Pollution Prevention Plan. Permit NC0005363 During the term of this permit, if the valid sampling results required for the permit monitoring periods exceed the benchmark value, or are outside the benchmark range, for any specific parameter at any specific outfall on four occasions, the permittee shall notify the DWQ Fayetteville Regional Office Supervisor in writing within 30 days of receipt of the fourth analytical results. DWQ may, but is not limited to: • Require that the permittee increase or decrease the monitoring frequency for the remainder of the permit; • Work with permittee to develop alternative response strategies; • Require the permittee to install structural stormwater controls; • Require the permittee to implement other stormwater control measures; or • Require that the permittee implement site modifications to qualify for the No Exposure Exclusion. This site discharges to impaired waters experiencing problems with Mercury. A Total Maximum Daily Load (TMDL) has been approved for this segment of The Lumber River. This permit requires the permittee to monitor for the pollutant(s) of concern and submit results to the Division of Water Quality. The Division will consider the monitoring results in determining whether additional BMPs are needed to control the pollutant(s) of concern to the maximum extent practicable. If additional BMPs are needed to achieve the required level of control, the permittee will be required to (1) develop a strategy for implementing appropriate BMPs, and (2) submit a timetable for incorporation of those BMPs into the permitted Stormwater Pollution Prevention Plan. B. (4) QUALITATIVE MONITORING REQUIREMENTS Qualitative monitoring requires a visual inspection of each stormwater outfall regardless of representative outfall status and shall be performed as specified in Table 4, during the analytical monitoring event. [If analytical monitoring is not required, the permittee still must conduct semi-annual qualitative monitoring.] Qualitative monitoring is for the purpose of evaluating the effectiveness of the Stormwater Pollution Prevention Plan (SPPP) and assessing new sources of stormwater pollution. In the event an atypical condition is noted at a stormwater discharge outfall, the permittee shall document the suspected cause of the condition and any actions taken in response to the discovery. This documentation will be maintained with the SPPP. Permit NC0005363 Table 4. Qualitative Monitoring Requirements Discharge Characteristics Frequency1 Monitoring Location2 Color semi-annual SDO Odor semi-annual SDO Clarity semi-annual SDO Floating Solids semi-annual SDO Suspended Solids semi-annual SDO Foam semi-annual SDO Oil Sheen semi-annual SDO Erosion or deposition at the outfall semi-annual SDO Other obvious indicators of stormwater pollution semi-annual SDO Footnotes: 1 Measurement Frequency: Twice per year during a representative storm event, for each year until either another permit is issued for this facility or until this permit is revoked or rescinded. If at the end of this permitting cycle the permittee has submitted the appropriate paperwork for a renewal permit before the submittal deadline, the permittee will be considered for a renewal application. The applicant must continue semi-annual monitoring until the renewed permit is issued. See Table 2 for schedule of monitoring periods through the end of this permitting cycle. 2 Monitoring Location: Qualitative monitoring shall be performed at each stormwater discharge outfall (SDO) regardless of representative outfall status. REMOVED B. (5) ON-SITE VEHICLE MAINTENANCE MONITORING REQUIREMENTS B. (6) STANDARD CONDITIONS FOR NPDES STORMWATER INDIVIDUAL PERMITS SECTION A: STORMWATER COMPLIANCE AND LIABILITY 1. Compliance Schedule The permittee shall comply with Limitations and Controls specified for stormwater discharges in accordance with the following schedule: Existing Facilities already operating but applying for permit coverage for the first time: The Stormwater Pollution Prevention Plan shall be developed and implemented within 12 months of the effective date of the initial permit and updated thereafter on an annual basis. Secondary containment, as specified in B. (2) Section A, Paragraph 2(b) of this permit, shall be accomplished within 12 months of the effective date of the initial permit issuance. Permit NC0005363 New Facilities applying for coverage for the first time and existing facilities previously permitted and applying for renewal under this permit: The Stormwater Pollution Prevention Plan shall be developed and implemented prior to the beginning of discharges from the operation of the industrial activity and be updated thereafter on an annual basis. Secondary containment, as specified in B. (2), Section A, Paragraph 2(b) of this permit shall be accomplished prior to the beginning of discharges from the operation of the industrial activity. 2. Duty to Comply The permittee must comply with all conditions of this individual permit. Any permit noncompliance constitutes a violation of the Clean Water Act and is grounds for enforcement action; for permit termination, revocation and reissuance, or modification; or denial of a permit upon renewal application. a. The permittee shall comply with standards or prohibitions established under section 307(a) of the Clean Water Act for toxic pollutants within the time provided in the regulations that establish these standards or prohibitions, even if the permit has not yet been modified to incorporate the requirement. The Clean Water Act provides that any person who violates a permit condition is subject to a civil penalty not to exceed $25,000 per day for each violation. Any person who negligently violates any permit condition is subject to criminal penalties of $2,500 to 25,000 per day of violation, or imprisonment for not more than 1 year, or both. Any person who knowingly violates permit conditions is subject to criminal penalties of $5,000 to $50,000 per day of violation, or imprisonment for not more than 3 years, or both. Also, any person who violates a permit condition may be assessed an administrative penalty not to exceed $10,000 per violation with the maximum amount not to exceed $125,000. [Ref: Section 309 of the Federal Act 33 USC 1319 and 40 CFR 122.41(a).] C. Under state law, a daily civil penalty of not more than ten thousand dollars ($10,000) per violation may be assessed against any person who violates or fails to act in accordance with the terms, conditions, or requirements of a permit. [Ref: NC General Statutes 143-215.6A]. Any person may be assessed an administrative penalty by the Director for violating section 301, 302, 306, 307, 308, 318 or 405 of the Act, or any permit condition or limitation implementing any of such sections in a permit issued under section 402 of the Act. Administrative penalties for Class I violations are not to exceed $10,000 per violation, with the maximum amount of any Class I penalty assessed not to exceed $25,000. Penalties for Class II violations are not to exceed $10,000 per day for each day during which the violation continues, with the maximum amount of any Class II penalty not to exceed $125,000. 3. Duty to Mitigate The permittee shall take all reasonable steps to minimize or prevent any discharge in violation of this individual permit which has a reasonable likelihood of adversely affecting human health or the environment. Permit NC0005363 4. Civil and Criminal Liabili Except as provided in B. (6), Section C of this permit regarding bypassing of stormwater control facilities, nothing in this individual permit shall be construed to relieve the permittee from any responsibilities, liabilities, or penalties for noncompliance pursuant to NCGS 143-215.3, 143- 215.6A, 143-215.613, 143-215.6C or Section 309 of the Federal Act, 33 USC 1319. Furthermore, the permittee is responsible for consequential damages, such as fish kills, even though the responsibility for effective compliance may be temporarily suspended. 5. Oil and Hazardous Substance Liabili Nothing in this individual permit shall be construed to preclude the institution of any legal action or relieve the permittee from any responsibilities, liabilities, or penalties to which the permittee is or may be subject to under NCGS 143-215.75 et seq. or Section 311 of the Federal Act, 33 USC 1321. 6. Property Rights The issuance of this individual permit does not convey any property rights in either real or personal property, or any exclusive privileges, nor does it authorize any injury to private property or any invasion of personal rights, nor any infringement of Federal, State or local laws or regulations. 7. Severability The provisions of this individual permit are severable, and if any provision of this individual permit, or the application of any provision of this individual permit to any circumstances, is held invalid, the application of such provision to other circumstances, and the remainder of this individual permit, shall not be affected thereby. 8. Duty to Provide Information The permittee shall furnish to the Director, within a reasonable time, any information which the Director may request to determine whether cause exists for modifying, revoking and reissuing, or terminating this permit or to determine compliance with this permit. The permittee shall also furnish to the Director upon request, copies of records required to be kept by this individual permit. 9. Penalties for Tampering The Clean Water Act provides that any person who falsifies, tampers with, or knowingly renders inaccurate, any monitoring device or method required to be maintained under this individual permit shall, upon conviction, be punished by a fine of not more than $10,000 per violation, or by imprisonment for not more than two years per violation, or by both. If a conviction of a person is for a violation committed after a first conviction of such person under this paragraph, punishment is a fine of not more that $20,000 per day of violation, or by imprisonment of not more than 4 years, or both. Permit NC0005363 10. Penalties for Falsification of Re The Clean Water Act provides that any person who knowingly makes any false statement, representation, or certification in any record or other document submitted or required to be maintained under this individual permit, including monitoring reports or reports of compliance or noncompliance shall, upon conviction, be punished by a fine of not more than $10,000 per violation, or by imprisonment for not more than two years per violation, or by both. SECTION B: STORMWATER GENERAL CONDITIONS 1. Individual Permit Expiration The permittee is not authorized to discharge after the expiration date. In order to receive automatic authorization to discharge beyond the expiration date, the permittee shall submit forms and fees as are required by the agency authorized to issue permits no later than 180 days prior to the expiration date. Any permittee that has not requested renewal at least 180 days prior to expiration, or any permittee that does not have a permit after the expiration and has not requested renewal at least 180 days prior to expiration, will be subjected to enforcement procedures as provided in NCGS 5143-215.6 and 33 USC 1251 et. seq. 2. Transfers This permit is not transferable to any person except after notice to and approval by the Director. The Director may require modification or revocation and reissuance of the permit to change the name and incorporate such other requirements as may be necessary under the Clean Water Act. The Permittee is required to notify the Division in writing in the event the permitted facility is sold or closed. 3. Signatory Requirements All applications, reports, or information submitted to the Director shall be signed and certified. All applications to be covered under this individual permit shall be signed as follows: (1) In the case of a corporation: by a responsible corporate officer. For the purpose of this Section, a responsible corporate officer means: (a) a president, secretary, treasurer or vice president of the corporation in charge of a principal business function, or any other person who performs similar policy or decision making functions for the corporation, or (b) the manager of one or more manufacturing, production, or operating facilities, provided, the manager is authorized to make management decisions which govern the operation of the regulated facility including having the explicit or implicit duty of making major capital investment recommendations, and initiating and directing other comprehensive measures to assure long term environmental compliance with environmental laws and regulations; the manager can ensure that the necessary systems are established or actions taken to gather complete and accurate information for permit application requirements; and where authority to sign documents has been assigned or delegated to the manager in accordance with corporate procedures; Permit NC0005363 (2) In the case of a partnership or limited partnership: by a general partner; (3) In the case of a sole proprietorship: by the proprietor; (4) In the case of a municipal, state, or other public entity: by a principal executive officer, ranking elected official, or other duly authorized employee. All reports required by the individual permit and other information requested by the Director shall be signed by a person described above or by a duly authorized representative of that person. A person is a duly authorized representative only if: (l) The authorization is made in writing by a person described above; (2) The authorization specified either an individual or a position having responsibility for the overall operation of the regulated facility or activity, such as the position of plant manager, operator of a well or well field, superintendent, a position of equivalent responsibility, or an individual or position having overall responsibility for environmental matters for the company. (A duly authorized representative may thus be either a named individual or any individual occupying a named position.); and (3) The written authorization is submitted to the Director. C. Any person signing a document under paragraphs a. or b. of this section shall make the following certification: "I certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with 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 fines and imprisonment for knowing violations." 4. Individual Permit Modification. Revocation and Reissuance. or Termination The issuance of this individual permit does not prohibit the Director from reopening and modifying the individual permit, revoking and reissuing the individual permit, or terminating the individual permit as allowed by the laws, rules, and regulations contained in Title 40, Code of Federal Regulations, Parts 122 and 123; Title 15A of the North Carolina Administrative Code, Subchapter 2H .0100; and North Carolina General Statute 143-215.1 et al. 5. Permit Actions The permit may be modified, revoked and reissued, or terminated for cause. The notification of planned changes or anticipated noncompliance does not stay any individual permit condition. SECTION C: STORMWATER OPERATION AND MAINTENANCE OF POLLUTION CONTROLS 1. Proper Operation and Maintenance Permit NC0005363 The permittee shall at all times properly operate and maintain all facilities and systems of treatment and control (and related appurtenances) which are installed or used by the permittee to achieve compliance with the conditions of this individual permit. Proper operation and maintenance also includes adequate laboratory controls and appropriate quality assurance procedures. This provision requires the operation of back-up or auxiliary facilities or similar systems which are installed by a permittee only when the operation is necessary to achieve compliance with the conditions of this individual permit. 2. Need to Halt or Reduce Not a Defense It shall not be a defense for a permittee in an enforcement action that it would have been necessary to halt or reduce the permitted activity in order to maintain compliance with the condition of this individual permit. 3. Bypassing, of Stormwater Control Facilities Bypass is prohibited and the Director may take enforcement action against a permittee for bypass unless: Bypass was unavoidable to prevent loss of life, personal injury or severe property damage; and There were no feasible alternatives to the bypass, such as the use of auxiliary control facilities, retention of stormwater or maintenance during normal periods of equipment downtime or dry weather. This condition is not satisfied if adequate backup controls should have been installed in the exercise of reasonable engineering judgment to prevent a bypass which occurred during normal periods of equipment downtime or preventive maintenance; and C. The permittee submitted notices as required under, B. (6), Section E of this permit. If the Director determines that it will meet the three conditions listed above, the Director may approve an anticipated bypass after considering its adverse effects. Permit NC0005363 SECTION D: STORMWATER MONITORING AND RECORDS Representative Sampling Samples collected and measurements taken, as required herein, shall be characteristic of the volume and nature of the permitted discharge. Analytical sampling shall be performed during a representative storm event. Samples shall be taken on a day and time that is characteristic of the discharge. All samples shall be taken before the discharge joins or is diluted by any other waste stream, body of water, or substance. Monitoring points as specified in this permit shall not be changed without notification to and approval of the Director. 2. Recording Results For each measurement, sample, inspection or maintenance activity performed or collected pursuant to the requirements of this individual permit, the permittee shall record the following information: The date, exact place, and time of sampling, measurements, inspection or maintenance activity; b. The individual(s) who performed the sampling, measurements, inspection or maintenance activity; C. The date(s) analyses were performed; d. The individual(s) who performed the analyses; e. The analytical techniques or methods used; and f. The results of such analyses. 3. Flow Measurements Where required, appropriate flow measurement devices and methods consistent with accepted scientific practices shall be selected and used to ensure the accuracy and reliability of measurements of the volume of monitored discharges. 4. Test Procedures Test procedures for the analysis of pollutants shall conform to the EMC regulations published pursuant to NCGS 143-215.63 et. seq, the Water and Air Quality Reporting Acts, and to regulations published pursuant to Section 304(8), 33 USC 1314, of the Federal Water Pollution Control Act, as Amended, and Regulation 40 CFR 136. To meet the intent of the monitoring required by this individual permit, all test procedures must produce minimum detection and reporting levels and all data generated must be reported down to the minimum detection or lower reporting level of the procedure. Permit NC0005363 5. Representative Outfall If a facility has multiple discharge locations with substantially identical stormwater discharges that are required to be sampled, the permittee may petition the Director for representative outfall status. If it is established that the stormwater discharges are substantially identical and the permittee is granted representative outfall status, then sampling requirements may be performed at a reduced number of outfalls. 6. Records Retention Visual monitoring shall be documented and records maintained at the facility along with the Stormwater Pollution Prevention Plan. Copies of analytical monitoring results shall also be maintained on-site. The permittee shall retain records of all monitoring information, including all calibration and maintenance records and all original strip chart recordings for continuous monitoring instrumentation, and copies of all reports required by this individual permit for a period of at least 5 years from the date of the sample, measurement, report or application. This period may be extended by request of the Director at any time. 7. Inspection and Entry The permittee shall allow the Director, or an authorized representative (including an authorized contractor acting as a representative of the Director), or in the case of a facility which discharges through a municipal separate storm sewer system, an authorized representative of a municipal operator or the separate storm sewer system receiving the discharge, upon the presentation of credentials and other documents as may be required by law, to; Enter upon the permittee's premises where a regulated facility or activity is located or conducted, or where records must be kept under the conditions of this individual permit; Have access to and copy, at reasonable times, any records that must be kept under the conditions of this individual permit; C. Inspect at reasonable times any facilities, equipment (including monitoring and control equipment), practices, or operations regulated or required under this individual permit; and d. Sample or monitor at reasonable times, for the purposes of assuring individual permit compliance or as otherwise authorized by the Clean Water Act, any substances or parameters at any location. SECTION E: STORMWATER REPORTING REQUIREMENTS 1. Discharge Monitoring Reports Samples analyzed in accordance with the terms of this permit shall be submitted to the Division on Discharge Monitoring Report (DMR) forms provided by the Director. Submittals shall be delivered to the Division no later than 30 days from the date the facility receives the sampling results from the laboratory. Permit NC0005363 When no discharge has occurred from the facility during the report period, the permittee is required to submit a discharge monitoring report within 30 days of the end of the three-month sampling period, giving all required information and indicating "NO FLOW" as per NCAC T1 5A 026 .0506. The permittee shall record the required qualitative monitoring observations on the SDO Qualitative Monitoring Report (QMR) form provided by the Division, and shall retain the completed forms on site. Qualitative monitoring results should not be submitted to the Division, except upon DWQ's specific requirement to do so. 2. Submitting Reports Duplicate signed copies of all reports required herein, shall be submitted to the following address: Division of Water Quality Surface Water Protection Section ATTENTION: Central Files 1617 Mail Service Center Raleigh, North Carolina 27699-1617 In addition, a separate signed Annual Summary DMR copy shall be submitted to the permittee's DWQ Regional Office (RO) by March 1 of each year. 3. Availability of Reports Except for data determined to be confidential under NCGS 143-215.3(a)(2) or Section 308 of the Federal Act, 33 USC 1318, all reports prepared in accordance with the terms shall be available for public inspection at the offices of the Division of Water Quality. As required by the Act, analytical data shall not be considered confidential. Knowingly making any false statement on any such report may result in the imposition of criminal penalties as provided for in NCGS 143- 215.66 or in Section 309 of the Federal Act. 4. Non-Stormwater Discharges If the storm event monitored in accordance with this individual permit coincides with a non- stormwater discharge, the permittee shall separately monitor all parameters as required under the non-stormwater discharge permit and provide this information with the stormwater discharge monitoring report. 5. Planned Changes The permittee shall give notice to the Director as soon as possible of any planned changes at the permitted facility which could significantly alter the nature or quantity of pollutants discharged. This notification requirement includes pollutants which are not specifically listed in the individual permit or subject to notification requirements under 40 CFR Part 122.42 (a). 6. Anticipated Noncompliance Permit NC0005363 The permittee shall give notice to the Director as soon as possible of any planned changes at the permitted facility which may result in noncompliance with the individual permit requirements. 7. Bypass Permit NC0005363 Anticipated bypass. If the permittee knows in advance of the need for a bypass, it shall submit prior notice, if possible at least ten days before the date of the bypass; including an evaluation of the anticipated quality and affect of the bypass. Unanticipated bypass. The permittee shall submit notice within 24 hours of becoming aware of an unanticipated bypass. 8. Twenty-four Hour Reporting The permittee shall report to the central office or the appropriate regional office any noncompliance which may endanger health or the environment. Any information shall be provided orally within 24 hours from the time the permittee became aware of the circumstances. A written submission shall also be provided within 5 days of the time the permittee becomes aware of the circumstances. The written submission shall contain a description of the noncompliance, and its causes; the period of noncompliance, including exact dates and times, and if the noncompliance has not been corrected, the anticipated time compliance is expected to continue; and steps taken or planned to reduce, eliminate, and prevent reoccurrence of the noncompliance. The Director may waive the written report on a case-by-case basis if the oral report has been received within 24 hours. 9. Other Noncompliance The permittee shall report all instances of noncompliance not reported under 24 hour reporting at the time monitoring reports are submitted. 10. Other Information Where the permittee becomes aware that it failed to submit any relevant facts in an application for an individual permit or in any report to the Director, it shall promptly submit such facts or information. SECTION F: STORMWATER LIMITATIONS REOPENER This individual permit shall be modified or alternatively, revoked and reissued, to comply with any applicable effluent guideline or water quality standard issued or approved under Sections 302(b) (2) (c), and (d), 304(b) (2) and 307(a) of the Clean Water Act, if the effluent guideline or water quality standard so issued or approved: a. Contains different conditions or is otherwise more stringent than any effluent limitation in the individual permit; or b. Controls any pollutant not limited in the individual permit. The individual permit as modified or reissued under this paragraph shall also contain any other requirements in the Act then applicable. Permit NC0005363 SECTION G: STORMWATER ADMINISTERING AND COMPLIANCE MONITORING FEE REQUIREMENTS The permittee must pay the administering and compliance monitoring fee within 30 (thirty) days after being billed by the Division. Failure to pay the fee in timely manner in accordance with 15A NCAC 2H .0105(b)(4) may cause this Division to initiate action to revoke the individual permit. SECTION H: DEFINITIONS FOR STORMWATER SECTION OF THIS PERMIT 1. Act See Clean Water Act. 2. Arithmetic Mean The arithmetic mean of any set of values is the summation of the individual values divided by the number of individual values. 3. Allowable Non-Stormwater Disch This permit regulates stormwater discharges. Non-stormwater discharges which shall be allowed in the stormwater conveyance system are: (a) All other discharges that are authorized by a non-stormwater NPDES permit. (b) Uncontaminated groundwater, foundation drains, air -conditioner condensate without added chemicals, springs, discharges of uncontaminated potable water, waterline and fire hydrant flushings, water from footing drains, flows from riparian habitats and wetlands. (c) Discharges resulting from fire -fighting or fire -fighting training. 4. Best Management Practices (BMPs) Measures or practices used to reduce the amount of pollution entering surface waters. BMPs may take the form of a process, activity, or physical structure. 5. Bypass A bypass is the known diversion of stormwater from any portion of a stormwater control facility including the collection system, which is not a designed or established operating mode for the facility. 6. Bulk Storage of Liquid Products Liquid raw materials, manufactured products, waste materials or by-products with a single above ground storage container having a capacity of greater than 660 gallons or with multiple above ground storage containers located in close proximity to each other having a total combined storage capacity of greater than 1,320 gallons. Permit NC0005363 7. Clean Water Act The Federal Water Pollution Control Act, also known as the Clean Water Act (CWA), as amended, 33 USC 1251, et. seq. 8. Division or DWQ The Division of Water Quality, Department of Environment and Natural Resources. 9. Director The Director of the Division of Water Quality, the permit issuing authority. 10. EMC The North Carolina Environmental Management Commission. 11. Grab Sample An individual sample collected instantaneously. Grab samples that will be directly analyzed or qualitatively monitored must be taken within the first 30 minutes of discharge. 12. Hazardous Substance Any substance designated under 40 CFR Part 116 pursuant to Section 311 of the Clean Water Act. 13. Landfill A disposal facility or part of a disposal facility where waste is placed in or on land and which is not a land treatment facility, a surface impoundment, an injection well, a hazardous waste long-term storage facility or a surface storage facility. 14. Municipal Separate Storm Sewer System A stormwater collection system within an incorporated area of local self-government such as a city or town. 15. No Exposure A condition of no exposure means that all industrial materials and activities are protected by a storm resistant shelter or acceptable storage containers to prevent exposure to rain, snow, snowmelt, or runoff. Industrial materials or activities include, but are not limited to, material handling equipment or activities, industrial machinery, raw materials, intermediate products, by-products, final products, or waste products. DWQ may grant a No Exposure Exclusion from NPDES Stormwater Permitting requirements only if a facility complies with the terms and conditions described in 40 CFR 9122.26(g). Permit NC0005363 16. Overburden Any material of any nature, consolidated or unconsolidated, that overlies a mineral deposit, excluding topsoil or similar naturally -occurring surface materials that are not disturbed by mining operations. 17. Permittee The owner or operator issued a permit pursuant to this individual permit. 18. Point Source Discharge of Stormwater Any discernible, confined and discrete conveyance including, but not specifically limited to, any pipe, ditch, channel, tunnel, conduit, well, or discrete fissure from which stormwater is or may be discharged to waters of the state. 19. Representative Storm Event A storm event that measures greater than 0.1 inches of rainfall and that is preceded by at least 72 hours in which no storm event measuring greater than 0.1 inches has occurred. A single storm event may contain up to 10 consecutive hours of no precipitation. For example, if it rains for 2 hours without producing any collectable discharge, and then stops, a sample may be collected if a rain producing a discharge begins again within the next 10 hours. 20. Representative Outfall Status When it is established that the discharge of stormwater runoff from a single outfall is representative of the discharges at multiple outfalls, the DWQ may grant representative outfall status. Representative outfall status allows the permittee to perform analytical monitoring at a reduced number of outfalls. 21. Rinse Water Discharge The discharge of rinse water from equipment cleaning areas associated with industrial activity. Rinse waters from vehicle and equipment cleaning areas are process wastewaters and do not include washwaters utilizing any type of detergent or cleaning agent. 22. Secondary Containment Spill containment for the contents of the single largest tank within the containment structure plus sufficient freeboard to allow for the 25 -year, 24-hour storm event. 23. Section 313 Water Prioritv Chemical A chemical or chemical category which: Is listed in 40 CFR 372.65 pursuant to Section 313 of Title III of the Superfund Amendments and Reauthorization Act (SARA) of 1986, also titled the Emergency Planning and Community Right -to -Know Act of 1986; Permit NC0005363 Is present at or above threshold levels at a facility subject to SARA Title III, Section 313 reporting requirements; and C. That meets at least one of the following criteria: (1) Is listed in Appendix D of 40 CFR part 122 on Table II (organic priority pollutants), Table III (certain metals, cyanides, and phenols), or Table IV (certain toxic pollutants and hazardous substances); (2) Is listed as a hazardous substance pursuant to section 311(b)(2)(A) of the CWA at 40 CFR 116.4; or (3) Is a pollutant for which EPA has published acute or chronic water quality criteria. 24. Severe Property Damage Means substantial physical damage to property, damage to the control facilities which causes them to become inoperable, or substantial and permanent loss of natural resources which can reasonably be expected to occur in the absence of a bypass. Severe property damage does not mean economic loss caused by delays in production. 25. Significant Materials Includes, but is not limited to: raw materials; fuels; materials such as solvents, detergents, and plastic pellets; finished materials such as metallic products; raw materials used in food processing or production; hazardous substances designated under section 101 (14) of CERCLA; any chemical the facility is required to report pursuant to section 313 of Title III of SARA; fertilizers; pesticides; and waste products such as ashes, slag and sludge that have the potential to be released with stormwater discharges. 26. Significant Spills Includes, but is not limited to: releases of oil or hazardous substances in excess of reportable quantities under section 311 of the Clean Water Act (Ref: 40 CFR 110.10 and CFR 117.21) or section 102 of CERCLA (Ref: 40 CFR 302.4). 27. Stormwater Runoff The flow of water which results from precipitation and which occurs immediately following rainfall or as a result of snowmelt. 28. Stormwater Associated with Industrial The discharge from any point source which is used for collecting and conveying stormwater and which is directly related to manufacturing, processing or raw material storage areas at an industrial site. Facilities considered to be engaged in "industrial activities" include those activities defined in 40 CFR 122.26(b)(14). The term does not include discharges from facilities or activities excluded from the NPDES program. 29. Stormwater Pollution Prevention Plan Permit NC0005363 A comprehensive site-specific plan which details measures and practices to reduce stormwater pollution and is based on an evaluation of the pollution potential of the site. 30. Ten Year Design Storm The maximum 24 hour precipitation event expected to be equaled or exceeded on the average once in ten years. Design storm information can be found in the State of North Carolina Erosion and Sediment Control Planning and Design Manual. 31. Total Flow The flow corresponding to the time period over which the entire storm event occurs. Total flow shall be either; (a) measured continuously, (b) calculated based on the amount of area draining to the outfall, the amount of built -upon (impervious) area, and the total amount of rainfall, or (c) estimated by the measurement of flow at 20 minute intervals during the rainfall event. 32. Total Maximum Daily Load (TMDL) A TMDL is a calculation of the maximum amount of a pollutant that a waterbody can receive and still meet water quality standards, and an allocation of that amount to the pollutant's sources. A TMDL is a detailed water quality assessment that provides the scientific foundation for an implementation plan. The implementation plan outlines the steps necessary to reduce pollutant loads in a certain body of water to restore and maintain water quality standards in all seasons. The Clean Water Act, Section 303, establishes the water quality standards and TMDL programs. 33. Toxic Pollutant Any pollutant listed as toxic under Section 307(a)(1) of the Clean Water Act. 34. Upset Means an exceptional incident in which there is unintentional and temporary noncompliance with technology based permit effluent limitations because of factors beyond the reasonable control of the permittee. An upset does not include noncompliance to the extent caused by operational error, improperly designed treatment or control facilities, inadequate treatment or control facilities, lack of preventive maintenance, or careless or improper operation. 35. Vehicle Maintenance Activity Vehicle rehabilitation, mechanical repairs, painting, fueling, lubrication, vehicle cleaning operations, or airport deicing operations. 36. Visible Sedimentation Solid particulate matter, both mineral and organic, that has been or is being transported by water, air, gravity, or ice from its site of origin which can be seen with the unaided eye. Permit NC0005363 37. 25 -year, 24 hour storm event The maximum 24-hour precipitation event expected to be equaled or exceeded, on the average, once in 25 years. Proposed Cooling Pond Assessment Work Plan August 2016 W.H. Weatherspoon Power Plant APPENDIX C SynTerra 2009 NPDES PERMIT NC0005363 RENEWAL APPLICATION &4?r Progress Energy Progress Energy Weatherspoon Steam Electric Plant 491 Power Plant Rd. Lumberton, NC 28358 Mrs. Dina Sprinkle NCDENR Division of Water Quality Point Source Branch 1617 Mail Service Center Raleigh, N. C. 27699-1617 RECEIVED January 26, 2009 JAN 2 8 2009 DENR - WATER QUALITY File No: WSPN — 12520-13-01 POINT SOURCE BRANCH Subject: Carolina Power & Light Company d/b/a Progress Energy Carolinas, Inc. Weatherspoon Steam Electric Plant, Robeson County, Lumberton, North Carolina National Pollutant Discharge Elimination System (NPDES) Permit No. NC0005363 Renewal Application Dear Mrs. Sprinkle: The current NPDES permit for the Progress Energy Carolina's Weatherspoon Steam Electric Plant expires on July 31, 2009. By this correspondence, Progress Energy Carolinas respectfully requests that the NPDES permit for the facility be reissued. Enclosed are the completed application forms with attachments, one signed original and two copies. Progress Energy Carolinas has submitted five amendments to the last NPDES permit application. There were two amendments to add coal freeze conditioning agents to Form 2C, Attachment 4 (November 2004 and December 2008); an amendment to incorporate the reverse osmosis water treatment system into full operation (March 2005); an amendment to add three storm water outfalls along the access road to allow for coal ash reclamation activities (March 2008); and an amendment to increase the predicted number of trucks leaving the site with reclaimed ash (September 2008). The enclosed Form 2F includes sampling data results from the new storm water outfalls as required by regulation. Some of the analyses have not been conducted but the results will be submitted by the March 2010 due date under another transmittal. The description of the management of solids generated during wastewater treatment at the Weatherspoon Steam Electric Plant is described in Form 2C, Attachment 3. Progress Energy Carolinas requests that the following condition be added to the renewed NPDES permit. The purpose of this condition is to formally recognize the guidance and understanding we have received from the Division in the past. Progress Energy Carolinas, Inc. Weatherspoon Steam Plant 491 Power Plant Road Lumberton, NC 28358 Progress Energy Carolinas, Inc. NPDES Permit Number NC0005363 Weatherspoon Steam Electric Plant 2009 Renewal Application Attachment 1 Form 1 Item XI Maps a 21 M' keu r lata e ILI u 001' Poin I, 1 } r j f,US South0eas berton (NQ Qu cD'1'=+39 20 a - r, All igtits Re -set Not FwNavigat n S �\ Plant (;o ing v LUX Weat'enpoon Steam Electric Plant Site NORTH CAROLINA 0 0.4 0.8 1.2 1.6 2 miles Progress Energy Carolinas, Inc. NPDES Permit Number NC0005363 Weatherspoon Steam Electric Plant 2009 Renewal Application Attachment 1 continued 0 0.1 0.2 0.3 0.4 0.5 mile 1-2 Progress Energy Carolinas, Inc. NPDES Permit Number,NC0005363 Weatherspoon Steam Electric Plant 2009 Renewal Application Attachment 2 Form 2C Item II -A Flows, Sources of Pollution, and Treatment Technologies -Source Estimated Average Flow Comments A 4-16 MGD Make up waterfrom Lumber River, Maximum rate is 9 12 MGD B 4 03 MGD Non -contact cooling water discharge, Maximum rate is 9 12 MGD C 0 7 MGD Make up for cooling pond, Maximum rate is 9.12 MGD D 193 MGD Condenser cooling water - all three units operating E 2,400 GPM Maximum make-up rate for fire water system F 1`00 GPD Low volume wastes to the ash pond G 21 MGD Ash pond discharge to cooling pond H 191 MGD Condenser discharge to cooling pond 1 120 GPM Intermittent flow as required J 0 14 MGD Discharge to cooling pond from oil/water separator K 0 024 MGD Estimated using average daily rainfall L 0 14 MGD Variable due to intermittent processes and runoff M 0.7 MGD Maximum estimated rate is 1 6.MGD N 0 MGD Pond does not normally discharge See Attachment 3 for details O 0 00125 MGD Sanitary wastes P 50,000 gal/event - Units 1 & 2 42,000 gal/event - Unit.3 Amounts estimated, Usually evaporated in boiler Q 0 19 MGD ,Estimated using average daily rainfall R 0 011 MGD Estimated using average daily rainfall S 4,000 GPD Low volume waste (reverse osmosis refect water) 2-1 Progress Energy Carolinas, Inc. NPDES Permit Number NC0005363 Weatherspoon Steam Electric Plant 2009 Renewal Application Attachment 2 continued Combustion Turbine Site 2-2 Evaporation Potable Water - Sanitary Waste Septic Sand & Q System System Tank Gravel P Bed Metal Cleaning Wastes Wells i I Plant Systems Low Volume L Wastes Plant Drains Lumber RiverF i A i i oily Wastes River Intake i ' StructureNV Ash�Siuice sstem Condenser Retention I I Basin Heat Exchancier i Plant Drains i i ' D � E OiUVNater Fire"Water Internal Intake Separator S stem Structure J Q Plant Area Storm Ash Water Runoff Pond S Low Volume Wastes Coal Pile Runoff Secondary Settling K Evaporation & Basin Seepage M G C Cooling Pond B 7Separator NStormWater Lumber River NV Outfalls Outfa11002 Vater Outfa11001 Combustion Turbine Site 2-2 Progress Energy Carolinas, Inc. NPDES Permit Number NC0005363 Weatherspoon Steam Electric Plant 2009 Renewal Application Attachment 3 Form 2C Item II -B Flows, Sources of Pollution, and Treatment Technologies The Weatherspoon Steam Electric Plant is a steam cycle electric generating plant with three coal -burning units and four internal combustion turbines Source water is withdrawn from the Lumber River as, required to make up evaporative and seepage losses from the power plant's cooling pond Makeup pumping rates from the river are, highly variable depending upon natural weather conditions, generation load, plant operations, and cooling pond water level Water for,power plant use is also'withdrawn from groundwater wells Chemical constituents of the power plant discharges will, in part, be representative of the naturally occurring chemical quality of the intake water and will also have chemical constituents of such quality and quantity associated with similar discharges,for fossil generating facilities of'this size, type, and in this geographical location Either all or part of the elements enumerated in the Periodic Table, either singularly or in any combination, may from time to time be contained,m this discharge, There are -five permitted outfalls at the Weatherspoon Steam Electric Plant, three of which are for storm water along the access road Components of the discharges are described below OUTFALL 001 - DISCHARGE FROM COOLING POND Most of the power,plant waste streams are routed directly or indirectly to the 225 -acre off -stream cooling pond located on the north side, of the Lumber'River in Robeson County, North Carolina, and thereby recycled Releases from the cooling pond are rare, occurring usually when a mayor storm is expected and additional freeboard is needed to prevent°overtopping of the,pond-dikes On other occasions, the, pond may need to be drawn down for maintenance purposes The cooling pond last discharged to the Lumber River in September of 1999 There are also incidental seepages and leaks through the dikes and retaining wall (sheet pilings) to ifie Lumber River from the cooling pond The pH of the cooling pond is neutralized when needed by adding acid or caustic at the circulation water pumps A description of the waste streams that discharge info the -cooling ipond follows Recirculated Cooling Water This flow provides condenser cooling water for,the three generating units The`flow is,discharged into the cooling pond and routed through the cooling pond by baffle dikes to achieve maximum surface cooling efficiency before reaching the condenser cooling water circulating water'pumps to be used again Cooling of the water is achieved primarily by evaporation from the pond surface, which'is estimated to consume a maximum of approximately 1 6 MGD above natural evaporation rates during times the units' are in full operation Control of'biolog'ical fouling on condenser surfaces is accomplished by chlorination, as needed Coal Pile Runoff Rainfall runoff from the coal pile (approximately 6 acres) is routed to the cooling, pond, which provides treatment by sedimentation Freeze conditioning agents may be applied to coal shipped via trains to the power plant typically between November 15 and March 15 Storm Water Runoff Rainfall runoff from power plant areas is ultimately routed ,to the cooling pond Sludges/sediments collected `in sumps, catchment basins, etc are disposed of'in the ash pond or by,other appropriate methods Ash Sluice Water Fly ash and bottom ash'from all three units is hydraulically conveyed by a ash sluice pipeline system to the ash pond In addition, water from washing the interior of the precipitators is sent to the ash 3-1 Progress'Energy Carolinas, Inc. 'NPDES, Permit Number NC0005363 Weatherspoon Steam Electric Plant 2009 Renewal Application pond via the -ash sluice pipeline In the ash pond,,a stand pipe allows for overflow release to a small secondary settling basin containing another stand pipe for release, to the cooling pond Sanitary Waste `Sanitary waste is treated on-site by a septic tank and a sand and' gravel drainage field which discharges to the cooling pond Flow from the system is dependent upon fluctuating demand due to variations in the number of personnel on site When needed, residuals are,disposed of off-site by'a licensed contract disposal firm Metal Cleaning Waste Wastes from the chemical cleaning of the boiler,tubes are normally disposed of by evaporation in boilers, either onsite or at another Progress Energy facility Boiler cleaning is usually performed every 10 years Should boiler cleaning wastes not be evaporated, they will be treated by neutralization and precipitation in portable holding tanks The liquid fraction of°the metal cleaning wastes will be discharged to the ash pond The sludge fraction of the metal cleaning wastes will be disposed of in either the ash pond or by other,appropnate methods Internal Combustion Turbine (CT) -Site There are four internal combustion turbines located at the Weatherspoon Plant' All drains from the CT site, including drains collecting rainfall, are routed through an oil -water separator which discharges to the cooling pond Sludges/sediments collected in sumps, catchment basins; etc are disposed of in the ash pond or by other appropriate methods Low -Volume Waste All low volume wastes are routed by gravity flow to the cooling pond Sumps collect°and convey miscellaneous equipment, leakage, equipment drainage for maintenance, equipment wash down water, sampling streams, and closed cooling water system blowdown Water treatment wastes consist of solutions of sodium chloride, used for water softener regeneration, and sodium hydroxide and sulfuric acid which are used in the regeneration of'derniineralizers Demineraliier regeneration wastes are routed to the ash pond via the ash sluice line Reverse osmosis refect water and cleaning solutions, and water'softener regeneration wastes are routed directly to the cooling pond Blowdown of boilervater to control boiler chemistry is routed ,to a flash tank, which discharges to the cooling pond Drains from areas likely to contain oil filled equipment or storage are routed through an oil - water separator Sludges/sediments from sumps, catchment basins, etc are disposed of in the ash pond ,or by other appropriate methods The air preheaters are water washed infrequently, When the air preheaters are Washed, approximately 50,000 gallons of wastewater is produced and discharged to the ash pond via1he ash sluice pipelines In addition, wastes from the chemical cleaning of the condenser tubes and heat exchangers are normal ly,disposed,of,in the ash pond' Should condenser and heat exchanger cleaning wastes not be discharged into the -ash pond, they will be evaporated At this -time it is unclear as to how often condenser and heat exchanger cleaning may be performed In, many cases, chemicals added during,the,plant processes are consumed or chemically altered Only trace amounts might be discernable in water entering the cooling pond Because the•cooling pond serves as a final treatment basin and receives significantly ,greater volumes,of water from other inflows, detectable levels,of these chemicals should not occur in the infrequent cooling pond discharge Non -contact Cooling Water Non -contact cooling water withdrawn from, the Lumber River passes through heat exchangers to provide non -contact cooling for the power plant's closed cooling water system which is typically discharged to Outfall 002 As necessary, however, the non -contact cooling water may be routed temporarily to the cooling pond depending on the need for cooling pond makeup water Sodium hypochlonte (chlorine) is added at the non -contact cooling water pump intake, as needed, to control biological fouling of the heat exchanger surfaces 3-2 Progress Energy Carolinas, Inc. NPDES Permit Number NC0005363 Weathers'noon Steam Electric Plant 2009' Renewal Application Miscellaneous Waste Streams to the Cooling Pond `Coal Ash Management From time to time fly and bottom ash in the ash pond may be stacked or relocated within the diked boundary of the,ash pond system As this pond management activity does not alter the chemical character of the pond contents, no change in the nature of,the discharge to the cooling pond is anticipated Coal Ash Reclamation In the event a practicable market becomes available, Progress Energy may exercise the option of reclaiming coal ash from the ash pond system In consideration of the scope of such an operation, no additional discharges are expected to result from coal ash reclamation efforts Bestmanagement practices are established for these activities During ash removal projects, trucks are filled within the confines of the ash pond boundary and the load covered The trucks are washed down prior, to leaving the area and travel along a graveled on-site roadway before exiting the site via the plant access road Herbicide and Pesticide Usage in the Treatment System Ponds Herbicides may be used as,needed to control nuisance aquatic vegetation These herbicides are applied by licensed applicators, or persons under the immediate supervision of a licensed applicator, in accordance with the manufacturer's instructions Pesticides may be used as needed to, perform biological assessments These Pesticides are applied by licensed applicators, or persons under the immediate supervision of a licensed applicator, in accordance with the manufacturer's instructions OUTFALL 002 — NON -CONTACT COOLING WATER Non -contact cooling water is withdrawn from the. Lumber River and passed -through heat exchangers to provide non -contact cooling for the plant's closed cooling water,system After passing through the heat exchanger, non -contact cooling water is routed to the Lumber River via Outfall 002 Depending -on the need forcooling pond ,makeup water, the non -contact cooling water may be directed to the cooling pond Sodium hypochlorite (chlorine),is,added at the non -contact cooling water pump intake,, as needed, to control biological fouling of the heat exchanger surfaces As established by written plant procedure, chlorine is only added during times where non -contact cooling water is.routed to the cooling pond Upon completiori of chlorine addition, the non -contact cooling water system is operated with discharge to the cooling pond for a period of at least one hour prior to any redirection to Outfall 002 This procedure has been'implernented to prevent the discharge of chlorine to the river OUTPAL' LS SW -1, SW -1, AND SW -3 — STORM WATER During periods when coal ash removal prolects,are,conducted, the access road'to,the power plant becomes part of an industrial activity with three storm water outfalls along the road which are addressed in EPA Form 2F Storm water from these three discrete,conveyances is ultimately discharged into the Lumber River 3-3 Progress Energy Carolinas, Inc: NPDES Permit Number NC0005363 Weatherspoon Steam Electric Plant 2009 Renewal Application Attachment 4 Form 2C Item VI Potential Discharges Not Covered by Analysis Chemical Quantity Frequency Purpose (used/yr) Hydrazine 165 gal Continuous - when units are operational Oxygen scavenger in boiler TrisodiUm phosphate 1,000 Ib As needed pH control in boiler Disodium phosphate 5001b As needed pH, control in boiler Morpholine 275 gal Continuous - when pH control in boiler units are operational Sodium hypochlorite 12,950 gal As,needed Condenser and heat exchanger biofouling control Sodium hydroxide 9,000 gal As needed Deminerahzer regeneration Sodium hydroxide As needed As needed Cooling pond neutralization Sulfuric acid 2,000 gal As needed Demmeralizer regeneration Sulfuric acid 19,000 gal, As needed Cooling pond neutralization Molybdenum trioxide 330 gal As needed Corrosion control in,boder Sodium chloride 8,000 Ib Twice per month Water softener regeneration Sulfur, elemental 75 tonContinuous - when Flue gas, conditioning Unit 3 isoperational Citric acid, 50% 1,460 gal/event Approximately once Boiler cleaning per 10 years per unit Citric acid, dry 3,500 Ib/unit/event Approximately once Boiler cleaning per 10 ears er,unit _ Ammonium hydroxide 1,560 gal/event Approximately once goiler,cleaning er 10 years per unit 1,775 Ib/event - 'Sodium Nitrite Units 1 & 2 Approximately once Boiler cleaning 1,450 Ib/event - per 10 years per unit _ Unit 3 - Corrosion Inhibitor 55 gal/,'unit/event Approximately once Boiler cleaning per 10 years per unit 475 Ib/event — Amm`onium bicarbonate Units 1 & 2 Approximately once 375 lb/event — per 10 years per unit Boiler cleaning Unit 3 EDTA, 39% 6,000 Approximately once Boiler cleaning al/unit/event per 10 years per unit Hydrochloric,acid 1,000 gal/event As,needed Condenser cleaning Rodine 213 5 gal/event As needed Condenser cleaning Ammonium bifluonde 100 Ib/event As needed Condenser cleaning 4-1 Progress Energy Carolinas, Inc. NPDES Permit Number N00005363 Weatherspoon Steam Electric Plant 2009 Renewal Application Chemical Quantity (used''/yr) Frequency Purpose ,FAF-10 foam agent 110 gal/,event As needed Condenser cleaning FAF-20 anti -foam agent 20 gal/event As needed Condenser cleaning Sodium carbonate 500 'lb/event As needed Condenser cleaning Sodium hydroxide 400 gal/event As needed Condenser cleaning Sandb►ast,Media 500-700 Ib As needed Equipment cleaning Rhodamine liquid dye 0 01-0 03 al/event As needed Performance testing Hypersperse MDC120 25 Ib/MG Duping operation 'Reverse osmosis anti-scalent Solisep MPT150 17 Ib/MG During operation 'Reverse osmosis coagulant Kleen MCT403 - 48 Ib/event Quarterly or as ,needed Reverse osmosis membrane cleaning Kleen MCT411 24 Ib/event Quarterly or as needed Reverse osmosis membrane cleaning O'B Freezetrol 60 Variable As needed Coal freeze conditioning agent O'B Freezetrol 62 Variable As needed Coal freeze conditioning agent O'B Freezetrol 76-T Variable As needed Coal freeze conditioning agent FCA -1'000 Variable As needed " Coal freeze conditioning agent ,FCA -1010 Variable As needed Coal freeze conditioning agent 'FCA -2000 Variable As needed Coal freeze conditioning agent FCA -2500 Variable As needed Coal freeze conditioning agent FCA -3070 Variable As,needed Coal freeze conditioning agent, SRA -6000 Variable As needed Coal°freeze conditioning agent SRA -7000 Variable, As needed Coal freeze conditioning agent Flomin ST-Geomelt55 Variable As needed Coal freeze conditioning agent Flomin ST -944 Variable As needed Coal freeze conditioning agent AKJ FC=504 Variable As needed Coal freeze'conditioning agent BT 910 Variable As, needed Coal freeze conditioning agent NALCO 8880 Variable As needed ent Coal freeze conditioning agent BIO -PRO 55 Variable As needed Coal freeze conditioning agent FreeFlow SR -300 Variable As needed Coal freeze conditioning agent 4-2 Progress Energy Carolinas, Inc. NPDES Permit Number NC0005363 Weatherspoon Steam Electric Plant 2009 Renewal Application Attachment 6 Form 2F Item III Site Drainage Maps 0 0.1 0.2 0 3 0.4 0.5 miles 6-1 Progress Energy Carolinas, Inc. NPDES Permit Number NC0005363 Weatherspoon Steam Electric Plant 2009 Renewal Application Attachment 6 continued —765 ft to top of grade Open Drainage from drain abandoned rail line pipe ditches and fields cuardrese �•��Drain junction bo, �® .. ;Underground pipe • Catch +� basin SW -3 mA�� x.44.•• V. �f'P •.• '• o� a a s ' r Old restrooms •- Parking Lot N 1 Scale (approximated) c'd I1 n = 80' pienKtabie Approximated 6-2 Progress Energy Carolinas, Inc. NPDES Permit Number NC0005363 Weatherspoon Steam Electric Plant 2009 Renewal Application Attachment 6 continued N 1 Scale (approximated) I 1" = 270' NC 72 Power Plant Road Used auto parts business Small pond offsite SW -1 Unnamed tributary to the Lumber River Top of grade 6-3 Coal Fired plants in NC Progress Energy Weatherspoon.— NC0005363 — East Issued Modification 5/13/32008, (original issued 9/27/2004) Expire: 7/31/2009 There is no FGD process. There is one ash pond that discharges to, the main cooling pond. The, cooling pond_ has a designated outfall with limits Modification was to address storm water management requirements. There is no special condition for Dike inspection In the last -renewal there was no pursuit of an RPA since—no changes or reduction in limits/monitonng lwere considered valid. Fact Sheet supports last permit renewal. Narrative reviewed, no problems noted: Reviewed,By. Ron Berry Review'Date '1/16/09 11 Cv Progress Energy December 1, 2008 Mr. Gil Vinzani, Supervisor, Eastern NPDES Program Division of Water Quality North Carolina Department of Environment and Natural Resources 1617 Mail Service Center Raleigh, NC 27699-1617 Subject: Carolina Power & Light Company dba Progress Energy Carolinas, Inc. Asheville Steam Electric Plant NPDES Permit Number NC0000396 Cape Fear Steam Electric Plant NPDES Permit Number NC0003433 Lee Steam Electric Plant NPDES Permit Number NC0003417 Mayo Steam Electric Plant NPDES Permit Number NCO038377 Roxboro Steam Electric Plant NPDES Permit Number NC0003425 Sutton Steam Electric Plant NPDES Permit Number NC0001422 Weatherspoon Steam Electric Plant NPDES Permit Number NCO005363 NPDES Permit Application Amendment Dear Mr. Vinzani: Progress Energy Carolinas, Inc. (PEC) proposes to amend the NPDES Permit application for the subject facilities to add three additional freeze conditioning agents. These facilities expect to receive shipments of coal treated with freeze conditioning agents during the winter months (November 15 through March 15). Freeze conditioning agents, needed depending upon expected weather conditions during transport to ensure coal does not freeze in railcars, will be applied at an approximate rate of 2 pints per ton of coal. The product names used by the various coal mines which supply fuel to Progress Energy Carolinas power plants could include one or more of the additional following products (MSDSs enclosed): Product Name Primary Composition FreeFlow SR -300 30-50% glycerin Flomin ST -944 SRA > 50% diethylene glycol mixture and polymer/surfactant blend Bio -Pro 55 55% glycerin Coal pile runoff at each of these facilities flows to a treatment system (e.g., ash pond, cooling pond, settling basin). However, since there is a slight potential that these chemicals could be present in the wastewater that is ultimately discharged via a permitted outfall, PEC requests that these products be appended to the NPDES permit application. Note that toxicity testing is a permit requirement at each power plant outfall which contains the coal pile runoff waste stream. �9�� Progress Energy ptember T5, 2008 Mr. Gil Vinzani SEP 15 2008 Supervisor, Eastern NPDES Program North Carolina Department of Environment and Natural Resources Division of Water Quality 1617 Mail Service Center Raleigh, NC 27699-1617 L SEP7,&, 2008 DE"=R - WATER QUALITY t Subject: Carolina Power & Light Company d/b/a Progress Energy Carolinas, Inc. Weatherspoon Steam Electric Plant NPDES Permit No. NC0005363 Permit Application Amendment Dear Mr. Vinzani: Progress Energy Carolinas, Inc., is amending our NPDES permit application to reflect an increase in the planned number of trucks per day to transport coal ash off site as part of the ash reclamation activity at the Weatherspoon Steam Electric Plant. The ash reclamation activity currently conducted by the Weatherspoon Steam Electric Plant was described in the latest NPDES permit application. In the cover letter, we indicated that twenty trucks per day were planned. Due to changing market conditions, we are planning to increase the number of trucks per day to approximately forty. We will continue to follow our Best Management Practices (BMPs) and thus we do not expect any increased discharges into the three 4,11 permitted storm water outfalls. c?X Please amend your files accordingly. If there are any questions, please contact Robin Bryson at (919) 546-3962. I cert, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with 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. 1 am aware that there are significant penalties for submitting false information, including the possibility offines and imprisonment for knowing violations. Sincerely, (�;/ 17Zr,6 -;�-AtJd Mark Frederick, Plant Manager JMF/rb Enclosures c: Mr. L. Baxley Ms. R. . Bryson ro N atHers riYt�2rMskey o Inas, Inc. 491 Power Plant Road Lumberton. NC 28358 Proposed Cooling Pond Assessment Work Plan August 2016 W.H. Weatherspoon Power Plant SynTerra 2014 NPDES PERMIT NC0005363 RENEWAL APPLICATION DUKE EMERUY PROGRESS January 28, 2014 v t Mr. Tum Bel"ick NCDENR-Division of Water Resources 1617 Mail Service Center Raleigh, North Carolina 27699-1617 ECEI E JA M 2 9 ,, Subject: Duku Energy Proyruss, Inc. (Duke Enargy) Weatherspoon Plant, Robeson Cum ity NPDcS Permit 7 NC0005313a Renewal Hppiication Deas Mi. Belnick. C. V. Seita..-. Enoi—gy Complex 'ov i swton Seam Plant RU w:irni-gtan, RC 28401 910.341-;f ow i yiu341-4fau The current NPDES Wastewater Permit for the Duke Energy Prugrss, Inc. Weatherspoon Plant expires on July 3 t, c'v tzF. By this correspondence, Duke Energy requests that the NPDEZ permit for this facility be zissuad. Encivaud is the cumplatud appliCatiun furm vvith attazhmcnts: one signed oi iginal and two copies. The facility has nut discharged from Outfall 001 since 1999= therefore a grab sample was pulled from the cooling pond near the outfall in order to provide the effluent analysis required by Furm 2C. Thure have bean two modifications to the permit since it was originally issued in November, 2009. Fist, un June 15, 2011, the Division of Water Quality (now the Division of Water Resources 101visionp issued a modification to remove Section B (stormwater requirementst on the basis that coal ash hauling activity had ceased. Secondly, the Diviuiun issuud a mudificatiun an April 17. 2012- to remove the effluent limits page associated With Outfall 002 (nun -contact cooling water} on the Basis tnat the plant ceased operation of its coal-fired units and the d6charga atruUmre vias capped. At this Lima, dcmulitiun acti,,itias at the Weatherspaun Plant are ongoing. Form 2C Attachment 3 disuasses the remaini,.g wastewater streams at the site. Doke Energy respeutfully requests that tha Division incurpurate the following changes into the renewed permit for Outfall Oat: Remove monitoring requirements for arsenic_ and selenium on the basis that coal ash is no longer generated at the site or sluiced to the ash pond. i his is consistent with the requirements for other facilities that Have decommissioned coai-flretl units. Remove monitoring requirements for copper and irn on the basis that metal cleaning wastes subject to 40 CFR 423.10 are no longer generated onsite. Remove temperature monitoring and Foutnute 4 un the basis that rucietiulatud uoolin y water Is nu lunge generated at the facility. Thurefure any disuharga from the treatment unit referred to as the "cooling pond" cold nut actually cuntai, , proCaas wynte. used for uuoling purposes. vveadlempoon rianr, RoQeson county 19FUE5 Permit iF MCM1305363 Renewal application P-gc Z W Ifot]Ity 5ectlon m(5) as follows: A(5) Cooling Water Intake Structure (CWIS) The WeatherspseR-WaRif-9 rid ther-efe ts. The WeathCrspoon Plant no longer performs closed -cycle condenser cooling; than the water intake structure is no longer subject to compliance with Section s 06b) requirements. Add the fallowing two special conditions to the permit for consistency with other Duke Energy facilities. A(#) Groundwatur Monitoring TRe permittee shall conduct g"u ndwater monitoring to determine the compliance of this NPDES parmitted facility YJth the current groundwater standards found under 15A NCAC 2L.0200. The monitoring shall be conducted in accordance with the Sampling Plan approved by the Division. A(#) Ash Pond Closure Ash wvnd clu5arz- activities shall be conducted in accoriiance with the msR Puna Closure plan approved by the Division. A(#) Structural Integrity Inspections of Ash Pond Dam The facility shall meet the dam design and dam safety requirements per 40 CFR 125.95. Thank you, in advance, for your Lcnsideratiun of the eb%„e-requested items. If there are any questions regarding the information provided in this letter or the er clobed application, please contact Toys Ogellu, Environmental Specialist II in our North Carolina Regional MeauquaRers at (919) 546-6647; or Kai it Tyndall. Environmental Professional fur the Waatherspocn Plant, at (910) 3414775. These staff may also be reached via email at Leto a.O allu Dake- Ener-gy.com or Kent.Tyndail(cDDuka-Enorcly.cc;m, respectively. I ceniry, unver penarry or raw, mar rhis document and all attachments were prepared under my direction or supervision in accordance with a systa..r ra -cr.- m -r yu..t.r.eapersonnei propeny garneranir evaruare me :..rormarion suomirreo. aaseff on my inquiry or ripe person or persons who manage rhe system, or those persons directly responsible for gathering the information, the inforrn.C.....or..'rrad to rnu rapt or r.., Kra :iarisa Q..a r, K;, ....---ra, ane compiere. i am aware mar mere are signincanr penarries tor suumi?ring false information, incpuaing me possibility of fines and imprisonment for knowing violations. Sincerely, Allen m. Clare Station Manager Enclosures: EPH Form i — General If EPA Foy m 2C -- Wastewater Discharge Information l•l.ese P -a ur type Fn u.. onslia„au smog Only. Form Aooroved. OM13 No 2040-0086 FORM U.S. ENVIRONMENTAL PROTECTION AGENCY I EPA I.D. NUMBER .� GEIRERAC IRFIDI MATt61a ,. C—.lid,edPernik. Pmg...a F NCL] OUDS30&z0 1! GENERAL lR� rl h. tin._ 11..:....■.I...s h.1,,. _ _,....f..,;) , , u ,. n LABEL ITEMS 0l,.l111151t! lo -.37m- 0113 if a pwrited label has been pruMed, ansa it in ere de=i(jiieted ---■a. Revl■w the Irll■nr,aG■n Is Irrmmea, oro:: through a ti .mer ate correct a... in Rte 1. EPA I.D. NUMBER appr0prlam m,n arse tlelow. Also, If any w the preprinted data I$ absent flhe area to the /ell of the I.bef T___ fist_ the III. FACILITY NAME PLEASE PLACE LABEL IN THIS SPACE bdol-,tion that _hwld. ,r), please provide li in ere proper c..! -n a e.(e) MM. It ate la..., o ....,,,Piet. aro correct, you need not complete Items I, 111, V. and VI (except V046 whkh V FACILITY MAILING ADDRESS most be ■.mpkfedComp6t■ all Name 0 me label hes been Pro,deee. It -or �. Rte let.. ..ea nem aesmPCens .110 for ate NWI --ming o ;;Ch this y: FACILITY LOCATION data I s collected. II. POLLUTANT CHARACTERISTICS INSTRUCTIONS: Complete A through J to determine whether you need to submit any permit application forms to the EPA. If you answer "yes' to any questions, ;ea m==t sotimit Unix form no we sopplamanol rorn lisieo In Rte parenu.e.ls -ioIlowing the ge.stlon. M.rnIn .Ile M. in star iflim commn .. in. sopplemenwi form is attached, If you .m -mm'n." to ..ah question, you nand net zmb „R ..my of there fem=. Yale may .nr :.r'ns' 9 year..cti=ty Is ..,deded from p.RnR mgeimm.nts; see Section. C of me Instructions. See also. Section 0 of the Instructions for definitions of bold-faced terms laws' • ^ —"„n's 'a Re �ae� aplClf IC Oula 7 iw= ST Iftirle aEC3 IWN3 A Is this facifiry a publicly owned treatment works which 8 Does or will this facility refther exisdrng or proposed] maxima In a aiscll.rge w waste or tRu U.n.: ;FORM 2A) X inelod.. concentrated animal feeding operation of .,matt■ .nlr...l prude=tiem faellity which mosit: L. _ +s ,■ x, discharge to waters of the U.S.? ;FORM 28) C Is this a faeillty which currently results In discharges to X x 17. Is flus . proposes f..aliry f6.,—than thase descried in R :..lots of th. U.S. o.hon than thus. described In A or 8 e. B . bore) : hi.h JI result in . dischargu to w.ters of abo-? (FORM 2C) the U.S.? ;FORM 2D) _ _ _, E Dws or will lflis racie=r tr..!, a;oro, or alapoa. or h..�ordeae -=too? (FORM 3) X F Do you or will you Ir.J.ct res this r.cal..r Inousim.; .r m=midp_I .foment bsl- the Iowa ==l stratum X containing, within one quarter mile of the well bore, underground sources of drinking w..ar? ZFORM .r ti x G. Do you or will you mtvot .. mix .actli.r any proaeceo water H Do you or --:II you Inject .1 this f.ci;i,r solda ror species; or oth.r nold: which a -- brought to the serious in prwu=-= coah .: mining of =effort b; the Fra=ch wm7;ecWn with conventional all or natural gas proauction, X solution mining of minerals, in situ combustion of fossil X intact fluids used for enhanced recovery of oil or n.wral real, ov.. —very art g..7,.. a.I .nargy, TvRR .r g.s, or injeic; fluids for storage of ligald hydleearbom:? (FORM 4) I Is this f.cility . proposed vtatle-.cry aeafee which Is en. J 1= thl: f:cilft; _ trap■=d =tatlem.ry -sere. -hick i= or the 2a indo_bW wt■eodes listed In the Instructions and v NOT one of the 28 industrial categories I:sted in the v which will potenflally emit 100 tons per year of sny air L.e .crions .no n„ Ich will poicrairily .mit 290 tons per pollummt ragalm:ad ender the CIa.R Air Act and may .Ifect tie- of _m; alp f latamt to0rlated cnd.r the Cle-m Air Act ., 4, �• u a ■r be located in wn .fsh m.mt area? (FORM 5) and may affect or be located In an attainment araa7 'FORM III. NAME OF FACILITY ■ 1 SKIP W. kit P.L_=t n - Is n IV. FACILITY CONTACT A. NAME a TITLE (l. r.,Jr._1, h rill.) B PHONE T.- .Adv d -a.) e Ly,ada Zr enc, E,iv!1Z'L rcntwl Pa.v caoio .-I l t 1 s 1-$16 1x 1. N N N - 4• e] M -LING ADDRESS A STREET OR P.O BOX 6 3 a L 3Ut. on 1, eam ,1an4 Roa F3, CITY OR TOWN C STATE D. ZIP CODE 4 wlliflingt on ,. C l I 47 Vt. FACILITY LOCATION ... z7REE7, ROUTE NO. OR OTHER SPECIFIC IDENTIFIER 5 4 1 I rower A an xOad m& Lod M A C. CITY OR TOWN D.STATEI E. ZIP CODE IF. COUNTY CODE rij drmevq 1129398 5 EPA Fenn 3514-1 (8-90) CONTINUE ON REVERSE VII. SIC CODES (4-ftlt, in order o1 ori A. FIRST B. SECOND 71IP'►'e�+», 49,11 I rk aieccr,c 'rover eervacee -0-m c. i RInD D. FOURTH 71 jplxrh� 7 1 u Is 7d1. OrEr[ruOR IRfORMATION n. 11—E B.Is the name listed In ltvnl Y+Iy slap Rte o..ne(i 51 1JUKe energy rrogres4s, inC m Yl:S ❑ RD C. STniOwv Or- vrcRnTCR D. PHONE rima rkle&...r,/ e 10a19EIlIRE M= PUBLIC rWh__ fh..-f-1....1 r-.-.W J jP S=STATEty1D) ski-4 /75 P = PRIVATE O = O RSR ia1 r� u)'r E STREET OR P O BOX Y r Power Kant Oad - m F. CITY OR TOWN G. STATE H. ZIP CODE IIX. INDIAN LAND Is the facility lorded on Indian lands? t! i,unwerr-on lv% ztSiDd p YES Ito NO t! 1/ X. EXISTING ENVIRONMENTAL PERMITS A. NPDES dlv= I.S, .R Ilwl« D. PSD Mi.1{..fr lr. r )' . ts1Slr----: TC T I I g N Svcruvu�3n3 s B. UIC the- E. OTHER .) r T b 94T G b 0 b 9 U 1 _.0 –ir Vermis / _._=111111 we,–_e_al 1e-17 T. C. RCRA f/ rdr:�_ ti E. OTHER r. .f r P:: (' n NCD OUD03UG20 g 1 W0000002G _h Ue Sl lzr_San eermi■ Idof I" XI. MAP Attach to this apprkation a topographic map of the area extending to at least one mile beyond property boundaries. The map must show the outline of the facility, the 10 Llan m each m Its cksang no proposoa InmWo and dim h.rgo a=orea, e.ch d its ho+..rdoes wa :e ;na-e..t, .. .g., or diapoa.l faoillu.a, .nd m.ch SII whole i; Injects fields o...derq _o-d Include -11 :grins:, rim-_ .-d ether cart. -.t_r bodl=: In the mar r =: S.e in_tnrcti.na f.r predoe rgain--nts. XII. NATURE OF BUSIRESS rl—. a, u..-Pd.") The ;;.T. - .Chvzapov < Thine is ..-. vlcer.ie gv: cz_=i: g f-.ility ev .-i...ting of fv .- z:bi.;. 1160 MW : et --poeityl . XIII. CERTIFICATION t..ee1--tructi--) with the 140—.6... _-b.-dtfed 1 thl- ,kr tion —doll attachments and that. based on my i..qu1., .f theoe __..._ i-mediately responsible for obtaining the information contained In the aprrication, f believe that the information is true, accurate, and comNrete I am aware that theta are significant penalties far suun M.9 r. eel.r+n.uo11, ,+rcrl+w..Q N+. po_lbi.' of fi,a .nd lmpd. _. ,u+rf. A. NAME d OFFICIAL TITLE fir,;. _ .., .f .f) B. SIGNATURE c. Cn 1 3113NEe ,..Lien A. Clare COMMENTS FOR OFFICIAL USE ONLY 1C EPA FvFm 3510-1 (8-90) EPA 10. NUMBER (.0„-f.,+.._ /r.... f r3kn. , 1; Fens Approved NCD 0083062D OMB No. 20400086. Ple,..a Dri .t yr tvoe Ir, the enahaded , leas only. -ooroval e1nlres -51.98 FORM U.S ENVIRONMENTAL PROTECTION AGENCY EPA APPLICATION FOR PERMIT TO DISCHARGE WASTEWATER ZG EXia r wit; MFiNU�aC r uRlrvaor Cali M&WMAE, RllrwTNG mR0 alEvICGE 1'uRE UPERRI lams NPDES corrsobdafed Permits Program I OUTFALL LOCATION For each outfall, fist the latitude and longitude of its location to the nearest 15 seconds and the name of the receiving wotvp ,.tym'eR (11.r'f a. EK. -1700E O lvr:ol. QBE D RECEIVING WATER( 1 DEG 2 MIN 3. SEC. 1. DEG. 2. RAIN. 3. SEC 001 34.00 34.00 58.00 -78.00 56.00 25.00 Lumber River fl. FLOWS, SOURCES OF POLLUTION. AND TREATMENT TECHNOLOGIES A. Attach a line drawing showing the water flow through the facility. Indicate sources of intake water, operations contributing wastewater to the effluent, and treatment units labeled to correspond to the more uetaflvu uescnptions in Iwm B uonsracr a wa or Bwlenco on.fle lino orawing By afl..mng average naffs BEwraon Inmitas, operations, naB}te ,: units, and vett I!s If .;;.ter balonee eennat by detonnined (v.Q., provide - plctuftl de:oAption of the -..tine «nd amount of any =epwe of --t■;: _nd a_ ■■llecti■11 op treatment measures. B. For vach —th lt, provide.. do-jcriptio of- (.) All operations wntribeting w..:tcw-lec to the efflaent. Indadlag prowum -.stem te.-, aa.lem te.-, Coding aa.ar, and -tone -atop runoff; (2) Tho --ms= fl— contributed By each operation and (31 The treatment received by the wastewater. Continue on additional she-ts If necessary. 2. OPERATION(S) CONTRIBUTING FLOW 3. TREATMENT FALL NO. (11.-rf b AVERAGE FLOW b. LIST CODES FROM a OPER-7 ION irsrr AE.CRIF7OR TABLE zC- 001 Cooling Pona Discharge u MCa e.sc-arse ea sur.ace waver 4 A n.rrarary warren -erz.c s;aeem w.th as= ane -cave. -ea _ a.00wi nap i w �0 ..e...ee ova. e.ee erarnn _ ss lmentat on, flctation _ ■urbine site d-ai-- seaamentar-5, u-tsrron Y..ne sed3--t-tl�i, _ V nos ... OFFICIAL USE ONLY EP- Form .o-zC (U -03a) PAGE 1 of 4 CONTINUE ON REVERSE f OMIIU111=IIIA&6 TA1.1*k1s]:ill C. E..,..,p: for sw+.— runoff, Inks, or spliz, are any of the diseh..rg— d.seribed ire Ite... s II -A or B In:onnittan: or seasonal: m YES I_ ,1.r.1h.J.I! -1.., rh1.) ❑ NO Mq- raSe_Il...lh) a. FREWUENUT q FLOW a tvi7a PER B TOTAL VOLUME 2 OPERATION{.) WEEK b. MONTHS a retm rm, @ (,n _X4 (specify e,- um+s) OUTF._LL CONTRIBUTING FLOW {r,__ b PER YEAR 1 LONGTERM 2 MAXIMUM 1 LONGTERM 2 MAXIMUM e. eeRrrivn .vrol0leer (nn) (u,r) n -mgr) (ipe•jy,,1 '.9C) else Zr tll! ME7 sin ekry rl 001 c—I,n] ronu uIu=irnrg. 0 0 C. 0 0 (the ...11-, ro-d h._ -ct diucha 3.d uxnae 6ape.nmor 1995: III PRODUCTION A. Doo:.n .fflow..t pld■lim limitation pw Ulgated by EPA under Section 304 of the Clean (Nater Act apply to your faciliry? m YES j..plere hem 111-11r ❑ .O wr. B Ala the limitation_ in the .ppilcabl. effluent ■sideline e -pressed in terms of production jar other measure of operaflonf? U YES he. 11k 1 m NO C. Ir you answered 'y.a' :o Ito,,, III -B, lint the cloantity which represents on ..ctuol me..:eram—t of boa.- level of production, .xpre::ed in th. teen_ a :d units u:ed in the .ppli—blw effluent guidelinw, and indicate the affected outfalls ,. ,,a=Rptoz tq_Iv. PRODUCTION 2 AFFECTED OUTFALLS a.OUr..i T PER 13— a ERI I. op IeIE!4 URE ■ OPERATION, PRODUCT, MATERIAL, ETC i�fx'cl)1 IV. IMPROVEMENTS A. Are you now regaireo I!y any locel aothorhy w moat -my implementation vchadal. for the _mtructton, upgrading or operations of :asimr ter tre.tm.nt egelpwent or practice: or any ■th�r an-immm■ntal pmgmm= which may affect the discharges described In this application? This Indudes, but is not limited to, pennll =editions, adminlstrattve or enforcement orders enforcement romp! ante schedule letters, 50polati5m, cuan orcurs, ano gram yr loan canarrons ❑ YEa NO (w...; I.... /I. N) I- IDENTIFICATION OF CONDITION 2. AFFECTED OUTFALLS 3. BRIEF DESCRIPTION OF PROJECT 4. FIRr,e COfFLI-RCI! En.Z AGREEMENT, ETC a RD. s. SOURCE OF DISCHARGE a. REQUIRED b PROJECTED B OP.ivR_ Too may each .dditlonal shoots do:odbing -my additionol -ter i--ktion control programs jar other environmental projocrs which may affect your di.ch..rge..) y■= nwr h.--nd■—ay or which you plan Indicate whether each program :s now an..orw..y yr plasmon, one !....rein:. you ewarl or planned schedules for construction [_]MARK -X' IF DESCRIPTION OF ADDITIONAL CONTROL PROGRAMS IS ATTACHED EPA F.. 3SIG-2C (8-90) PAGE 2 of 4 CvR BREL' OR lu'ol! -1 19x.,1U.R0M8ER;..jry,....„ ,.!;"7 .r CONTINUED FROM PAGE 2 NCD 000830620 EPA Form 59 .Grsc i.-t;o1 PAGE 3 of 4 CONTINUE ON REVERSE V. INTAKE AND EFFLUERT CH, R_,;C T ERI .IeS A, B, & C: S_ instructions baler. preeeedi.-.g-CoerplAn erg eat of table- for e.eh oeBoll -Annotate this ootf.fl n --mbar In the :pave provided. NOTE. Tables V.A. V -B, and V -C are Included on separate shoots numbered V-1 throw h V•4. D. Um the up.— below to listany of th. pollutants listed in T.bl4 2-3 of the Irmtructions, -hIch you kn— r h.- ro.,rs to belie:., Is disch..rged nr m.y be d:sch.rged f�nr..; outf.11. F.r. =R Ileal ■ list, briefly d=scribe the reasons you believe it to be present and report any anal-, tical data in your possession. 1 POLLUTANT 2 SOURCE 1 POLLUTANT 2. SOURCE Asbestos Trace amount in insulation, :irc coazing.. .-d h_zneo_e� a4ronc.um Trucc nmounca or: pviauc-"E. i_m t'_a- _eui_ed ■e..l .Rau Zi_=_wi-gym VI. POTENTIAL DISCHARGES NOT COVERED BY ANALYSIS is any pollutant listed In Item V -C a substance or a camponon..,r .. 3o5zaarruo —1 h you wnendy ova or m.nefaerore ra _n Im.ormedlate or fin -I prodact or byproduct? ® YES (l.,I, .11.mrh pr,Il.....r..: hefre } ❑ NO r'jT..r_ l,.... I7 H) Antimony Arsenic Beryll.um =ad nium Ch« a-1�re Cw;: - Lead Mercary .;ickcl Scic-la- Sil-=_ Thallium Zinc EPA Form 59 .Grsc i.-t;o1 PAGE 3 of 4 CONTINUE ON REVERSE CONTINUED FROM THE FRONT VII BIOLOGICAL TOXICITY TESTING DATA De you ha o ..ny knowledge .r reason ro believe th., any b1ologka7 amaC for coz- or cn=n w,uu.r Flan Mn made on any of your discharges or on a receiving water In relation to ;our d1scha7= -ithin the loot 3 ;.ars? ❑ YES jidemo- tire mor) rl.le-. lh. rh.!_ p -IN, _m h.Gn,l m NO (F, ,,tial,.. Pill) Vlll CONTRACT ANALYSIS INFORMATIDN Were any of tho anuiyaaa reponea I.. Ilam w penwrrn . ly . wnuacr I-Pepora.ury or -9010'.g arm; ® YES list dje name, address, and telephone number NY. uml palhuants artall:eu r). ❑ NO ug1 ro ecoun 11 cucrr .nrc'n un—Or}' urJrrm rmr,R'r A. NAME B. ADDRESS C TELEPHONE D POLLUTANTS AN_1!7Zee THE. E=-i_w—ental Laboratory, 2401 W. 5th Street (910) 739-0190 All parameters -..-.c :.---nberee-, _e za:5e In (`iei�ilNGnilvN 1 cert W,de, pe, -Tr a 16w th.r W. d—,.,-. .,,d .11.tt ch -...t. me.- prepared v_d..... y di. tio... -ope...sls- L, .e..rd.noe =th r t... deSiy...d to s M.t ge..11fied perr.,..al propedr v.th.r -.d .7o1.P1. th. W .,,..tion _..hmftted. Based on my ingnlry of the person or persons who manage the system or those persons d recty responsible forgathering the Information, the information submitted ls, to the beat in—Y.—M-90 .n., uari.i, a u., .ccRl..v, .I.W .W.urn.... I .." P W.'. PIPr um,. are srvnibcant pena,d.. — oa...... ..... ct.ding tho po_ bifrty..l fi..v ..nd hr,pd..en..,...t ft k.,.wf.,g vlot,.ti..,,,, A. NAME & OFFICIAL TITLE (.ypc. p.....) B. PHONE NO. I..... _0e& A11e- A. 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Drains I mivwaier I separator Feel Di RerneMaiton site Grounuwater vvec B Fite Plant Are- stuRll Wale. Re�ett Asn l'017i] G F CMtng Font R C Rniim Uoal- Sde Drains wiry wastes Collection -einp viuvvaier J I INaparat on 8 v;eepage Guuah Girl 2-1 C S.Rd S Gravel septic Sygtom C VuKe Energy Progress. Inc NPDES Pe, -it Number NCO005363 vveaEllerspoon P;ant 2014 Renewal „Application Attachment 2 Conxinue'a Svorre Eutimatcd Average Flow Comments A 0.7 MGD Make up waLe, from Lumber River, maximum rate is a. iz MGu B 0 MGD Fir water system C 120 GPM Potable water service- intermittent Flow as required D 0.0002 MGD Sanitary wastes E 0.14 MGD Discharge to cooling pond from oillwaier sepaidtcr. F 0 MGD Ash pond does not normally discharge. See Attachmem 3 for details. G 0.19 MGD Estimated using average daily rainfall H 0.011 MGD Estimated asing average daily rainfall 1 0 MGD Pund dues not normally discharge. See Attachment 3 for details. J 0.7 MGD Maximum estimated rate is 1.6 MGD 2-2 Duke Energy Progress, Inc. NPDES Permit Number NC0006A3 vveaiMerspoon Plant 2014 Renewal Applicadon Attachment 3 Fur„, zC Item II -6 Flows: Sources of Pollution; and Treatment Technologies i Me vveatMerspoon Plant Mas roar operating internal combustion turbines. Th- tutal uluctric generation capacity for ine site is -0500 lMvv. Prior to c0 -i -i, three coal-rirea units were also in operation; however tMose units nave since ween reiiretf ants are in ine process or oeing demolished. Due to the retirement of toe coal-iireo units, ine plant no longer meets tMe aennition or a steam electric generating facility under 40 CFR zF4.5.-10, ants is tMererore no longer consiOeretl a categorical intaustry. i ne site currently Mas one permittee outran (00dall 'u0-iy iMe aischarge rrom tMe cz-a-acre on -stream cooling pont] locatetl on tMe norm sine or tMe Cumner River in Roneson County, IgortM Carolina, vvater is witMsrawn rrom tMe Cumber River as requires to mage up evaporative anti seepage losses. MaReup pumping rates rrom iMe river are Mignly variable tiepenuing upon natural weaiMer conUldons anti cooling pond water level. i Me cooling pons, inougn no longer uses tor coo,ing, will continue to Be mainiainea by ine site. Keleases irom iMe cooling pont3 are rare, potentially expectet7 to occur when a major storm is expectee ane atlaitional rreeboaro is neebeO to prevent overtopping of tMe ponb ailtes. On other occasions, releases may Be neeoeti ror maintenance purposes. , Mis pond last taiscnarget7 to the Eurnuer River in aepiemoer or -i gyg. i Mere are also incieental seepages anti leaks through tMe diRes an'u retaining wall tsMeei pilings to iMe Eumber River rrom tMe cooling pond. Chemical constituents o, tMe power plant discharges will, in part, be representative of the naturally occurring chemical quality of the intake water and will also have chemical constituents of such quality and quantity associated with similar discharges for former fossil generating facilities of this size, type, and in As geographical location. Either all or part of the elements enumerated in the Periodic Table, either singularly or in any combination, may from time to time be contained in this discharge. Inputs -to the cooling pond are described below - Retired Coal -Fired Site Prior to the retirement of the coal-fired units, most site wastewater streams were routed to the cooling pond, These wastewaters included recirculated cooling water, coal pile runoff, storm water runoff, mEtal cleaning wastes, low volume wastes, and the ash pond uutlEt (containing primarily sluiced fly and bottom ash). E„gineered toe drains are also routed to the coaling pond. Seeps have been identified on the ash pond dam. Drains from the coal site are routed to a calluction sump, which is then treated by an cil .,,ater separato, before discharging to the cv—ding pond. Thi iallaztion sump and oil -water separst.-r ..ill bu removed during the demolition process for the coal site. Combustion Tarbfie CT Site Hll drains from the combustion turbine situ, including drains collecting rainfall, are routed to the CT site oil - water separator which discharges to the cooling pond. Sludgusla-diments collected in sumps, catchment basins, etc, are disposed of by appropriate methods. There is an oil remediation area onsite. Groundwater removed from the remediation area is treated through a free-phasti uil recovery system vAich contains a dedicated oil/water separator. vvater tram that system is then sent through the CT site oil/water separator before being discMargetl to tMe cooling pone. Miscellaneuus Wastes Biocide Usaye in the Cooliny Purid Biocidal may be used as needed to control nuisance aquatic vegetation. i nese Merbiciaes are applied by livansed applicaturs, or persons under the immediate supervision or a licenses applicator, in accordancri with the manufacturer's instructions. Pesticides may Be usetl as neeeea to perform 3-1 Duke Energy Progress. Inc. NPDES Permit Number NC0005363 vveatnempoon Fiant _ 2014 Renewal Application biological assessments. These pesticides are applied by licensed applicators, or persons unser the Immediate supervision of a licensed applicator, in accordance with the manuiacturer's instructions. Duke Energy holds Certificate of Coverage NCG560006 fog the General rermit to Discharge Pesticides Under the NPDES Program. Other Wastes Other wastes such as samps collecting miscellaneous equipment leakage, equipment drainage for maintenance, equipment wash down water, and sampling streams may be routed to the cooling pond_ Sanitary waste is treated on-site by two septic systems with combined capacity of 4,000 gpd. The larger system (3,000 gpd) is listed as an input to the cooling pond since it consists of a sand and gravel drainage field located adjacent to the pond. Both systems are dependent upon fluctuating demand due to variations in the number of personnel on site. When needed, residuals are disposed of off-site by a licensed contract disposal firm. Previously, the plant also had three storm water oatfalls due to the plant's designation as a categorical industry source subject to federal effluent guidelines. Storm water requirements were initially established to cover coal ash hauling activity along an access road; however this activity ceased in November 2010. 3-2 Duke Energy progress, Inc. NPDES PermIL Number WXU953us Weathers„oon Plant 2014 Renewal Huullcauon Attadiimunt 4 Form 2C Item VI Potential Disc'narges Mot Covurca 6y A..alya;a Chemical Quantity (uaFUCl7yr) Frequency Purpose Sodium hydroxide As needed As needed Cooling pond neutralization 5alruric ac10 -iy,000 galHs nee0e0 Cooling pont] neuvaiization Sandblast Media 500-700 Ib & needed Equipment cleaning Rllotlamine liquia t1ye 0.0 1-0.0;3 al/even Hs needed Performance Testing Proposed Cooling Pond Assessment Work Plan August 2016 W.H. Weatherspoon Power Plant APPENDIX E 2015 WATER USE REPORT SynTerra Watan Withdrawa l and 11ransA r R1i gis tuation Raga 1 ail 2 Ham submit Clay Logan P4il visit Ihn tt1Q sedion for spersfia instn cliors regarding ti a comitfetiq of the al water i se report Upon com plc Win, f lease print of I a copy V your re=ds then subrI it your repo by clicking the st bmit till los os the navigation W r IlorthaaraliI I nusARM ioa oflNilie rResouras W,Ile r WAh rawat 1 ag istratia 1210 /� NCp� Ar r u al III l sci Replan Sec'Icn 1 lacill4 Inforritaaa■ Fellstrant: Il 11I (laminas 1111I ID: 0(33-0110 Facility Hama: W loll erspoon Steant E Iectnc nori er t b nl laciaty lylow snargl County' RilIson lilt -BI SIC Lumbi rRiver ((9-1} Mailing Address.: 411loaiergiant Id Lunlffon.NO20358 small' Plant .lIneap Y (duke energycom Call tal l8amon: Iertlyndall Title: SarironmenlalFig essional Pt ane: 110-341.477! Hag: S1a-311-0791 I. it �ac',iy In?orn_ahan SoctIon 2- Will dramral Information 2-A. 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