Response to EPA CWA 308 and RCRA 3007 Information Request 

Progress Energy Carolinas, Inc. 

Asheville Steam Electric Plant 

August 2010 Page 1 of 15 

(1) Identify the name, address, telephone number, and location of the current legal owner(s) and 

operator(s) of Progress Energy Carolina, Inc., Asheville Steam Electric Plant, as well as the name, 

address, telephone number, and location of its parent company.

Legal owner and operator: 

Carolina Power & Light Company 

d/b/a Progress Energy Carolinas, Inc. 

Asheville Steam Electric Plant 

200 CP and L Drive 

Arden, NC 28704 

(828) 687-5201 

Parent Company: 

Progress Energy, Inc. 

410 South Wilmington Street 

Raleigh, NC 27601 

Plant Location: 

Skyland, Buncombe County, NC 

 

Source of Responses:

Fred Holt 

Supervisor, Environmental Services 

410 S. Wilmington Street, PEB4A 

Raleigh, North Carolina 27601 

(919) 546-5286 – phone 

(919) 546-4409 – fax 

Fred.Holt@pgnmail.com 

(2) On a Topographic map, using the most recent USGS 71⁄2 minute or 15 minute topographic quadrangle 

map, show the location of the facility boundaries, as well as surface water flows, including tributaries, 

streams, rivers, lakes, ponds, and wetlands within the facility boundaries and that cross into or are 

adjacent to the facility boundaries. 

See Figure 1 for the USGS topographic map, showing the approximate Asheville Facility boundary 

and nearby surface water flows. 

(3) List and label each area at the facility that the company uses or has used to collect, store, treat, or 

dispose of fly ash, bottom ash, slag, combined fly and bottom ash, flue gas desulfurization sludge, codisposed and co-managed ash and coal refuse, solid waste, hazardous waste, as well as wastewater, 

including process wastewater, waste slurry or sludge, cooling water, storm water runoff, and sanitary 

wastewater, on an episodic or routine basis (“management areas”). For each of these areas, describe 

its function in managing waste or wastewater. Management areas include, but are not limited to, 

underground mines, underground injection wells, landfills, tanks, ponds, lagoons, basins, storm 

drains, pipes, and surface impoundments. 

Descriptions of the management areas, as defined in question 3, are provided in Table 1. 

 

References: 

1. 2005 NPDES Permit Application (Appendix A) 

2. 2010 NPDES Permit Application (Appendix B) 

3. Ash pond storage volume documents (Appendix C) 

(4) For each management area, identify its location and boundaries on the map provided in response to 

request #2. 

See Figures 2 and 4 for location of “management areas” for waste and wastewater. For clarity, 

Figure 4 is provided on a USGS topographical map and on an aerial, as Figure 4A.

(5) For each management area, describe the area’s approximate storage capacity, the volume of waste or 

wastewater currently stored, and the approximate proportion of free liquid and settled solids within 

the stored wastewater. Explain how the company calculated these volumes.

Approximations of the storage capacities, proportion of free liquid and settled solids, as well as 

references for these approximations for each management area may be found in Table 1. The 

proportions of free liquid and settled solids are not applicable for some management areas. 
Response to EPA CWA 308 and RCRA 3007 Information Request Progress Energy Carolinas, Inc. 

Asheville Steam Electric Plant

Page 2 of 15 

(6) Provide the name of any entity with whom you have contracted for the disposal, sale, or 

reuse/recycling of coal combustion waste generated from your facility for the past five (5) years. 

Identify the type and amount of coal combustion waste that the company disposed of through such 

contracts each year for the past five (5) years. 

Counterparties contracted with: 

Buzzi Unicem USA/Signal Mountain 

Charah, Inc. 

PQ Corporation 

Roanoke Cement Company, LLC 

Synthetic Materials 

United States Gypsum Company 

Volumes sold, reused, or disposed of: 

Year FGD WWTS Filter 

Cake (tons) 

Ash 

(wet tons) 

Gypsum 

(wet tons) 

2005 0 7,214 0 

2006 451 292 39,881 

2007 955 14,360 53,706 

2008 12,27 183,936 57,077 

2009 1,115 487,638 44,976 

Filter cake from FGD wastewater treatment is sent to a landfill in South Carolina (Republic Services – 

Union County Regional Landfill). 

(7) Identify all the waste streams generated at the facility in the past five (5) years. Referring to the labels 

provided for each management area, provide a flow diagram showing each waste stream from the 

source of generation to its final disposition. In the flow diagram, include the following information: 

(a) descriptions of the waste streams (including but not limited to, fly ash, bottom ash and slag, 

combined fly and bottom ash, flue gas desulfurization sludge, co-disposed and co-managed ash and 

coal refuse) and their chemical characterizations; (b) the daily and annual volume of each waste 

stream flow; and (c) the final disposition of the waste streams, including recycled or otherwise 

destined for beneficial use.

A summary of the waste streams is shown in Tables 2 and 3, including a description of their final 

disposition and daily and annual volumes produced. 

A flow diagram of the wastewater streams and the estimated daily flow rates of the waste streams are 

provided in Appendix D, as described in the 2010 NPDES permit application. A flow diagram of 

waste streams other than wastewater is also provided in Appendix D. 

Chemical compositions of the wastewater streams have been determined post-treatment, at the 

discharge to surface waters (Outfalls 001, 002, and SW-3). Analyses of the individual waste and 

wastewater streams contributing to the outfalls have not been conducted. The 2005 and 2010 NPDES 

permit applications (Appendices A and B) includes chemical composition data of these discharges, in 

forms 2C and 2F. Additionally, the facility’s Discharge Monitoring Reports data (Appendix E) 

includes analysis of Internal Outfall 005 (the treated FGD wet scrubber wastewater) as well as Outfalls 

001 and 002. Chemical composition of the coal ash is provided to the North Carolina Department of 

Environment and Natural Resources (NCDENR) on an annual basis; analyses for the past 5 years are 

included in Appendix F. Additionally, analyses of the filter cake from FGD wastewater treatment 

system (WWTS) and gypsum are provided in Appendices G and H. 

(8) Provide any testing and analyses relied on to determine the characterization of the waste streams, as 

well as any sampling results of the waste streams obtained by the facility for the past five (5) years. 

For any sampling results provided, include a description of the sampling procedures used.
Response to EPA CWA 308 and RCRA 3007 Information Request Progress Energy Carolinas, Inc. 

Asheville Steam Electric Plant

Page 3 of 15 

Analyses of all the individual wastewater streams contributing to the outfalls have not been conducted. 

The 2005 and 2010 NPDES permit application (Appendices A and B) includes all available chemical 

characterization data of these discharges, in forms 2C and 2F, as indicated in question 7. Sampling 

procedures for wastewaters include grab samples, pump logs, records, and instantaneous 

measurements.

Appendices F, G, and H contain analyses conducted of coal ash, filter cake from the FGD WWTS, and 

gypsum shipped off-site. Sample procedures for these include obtaining grab samples by Progress 

Energy facility personnel.

(9) Describe any wastewater discharges, including overflows, diversions, or other releases, that occur or 

have occurred within the last ten (10) years from the management areas to surface waters, including 

tributaries, streams, rivers, lakes, ponds, and wetlands. Identify the discharge points and runoff paths 

on the map provided in response to request #2. Provide any analytical data or monitoring results from 

the last five (5) years that demonstrate hazardous constituents in the wastewater discharges from the 

management areas to surface waters. Identify the management plans and treatment technologies that 

the company implements to control its wastewater discharges. Provide a copy of the National 

Pollutant Discharge Elimination System (“NPDES”) permit that authorizes these wastewater 

discharges. If the company has not obtained permit coverage, provide an explanation for this lack of 

coverage. Submit any discharge monitoring reports in which the company reported wastewater 

violations from the last five (5) years. 

The Asheville Plant is authorized to discharge from Outfalls 001 and 002, Internal Outfalls 004 and 

005, and six stormwater discharges, described below. No overflows, diversions, or other releases not 

otherwise allowed by the permit have occurred in the past 10 years. Allowed alternate flow paths are 

described below and in the flow diagrams provided in response to Question 7. Outfall locations are 

shown on Figure 1. 

Outfall 001 - Discharge from Ash Pond to French Broad River 

The Plant's ash pond (referred to as the 1982 ash pond), is located east of the French Broad River, 

south of the plant and discharges into the French Broad River. The ash pond receives ash sluice water 

from fly ash and bottom ash systems including selective catalytic reduction (SCR) system ammonia 

slip (discharge began in spring 2000), various low volume wastes (including water treatment wastes, 

boiler blowdown, plant drains, ash hopper seal water, air preheater cleaning wastes, and FGD 

blowdown [Internal Outfall 005]), coal pile runoff, limestone pile runoff, gypsum loading area runoff, 

fire protection system drainage, and chemical metal cleaning wastes (if not evaporated; Internal Outfall 

004), stormwater (from the plant area, parking lots, combustion turbine area, oil storage and handling 

facility, and substations) and other waters (such as turbine blade wash water, inlet filter cooling water, 

condensate water, and water from equipment and tank drains) from the Combustion Turbine Facility 

on the Plant's site. Wastewater from the plant's truck wash and weigh stations also are directed to the 

plant's 1982 Ash Pond. 

Coal dust suppression is achieved by spraying a proprietary chemical on coal at different stages of coal 

use. Small amounts of excess dust suppression chemical have the potential to be discharged to the 

1982 ash pond via plant drains or coal pile runoff. Accumulated water within the boundaries of the old 

ash pond (referred to as the 1964 ash pond) may also from time to time be transferred to the 1982 pond 

Water leaves the 1982 ash pond via a standpipe with skimmer and flows by pipe and lined ditch to a 

secondary stilling basin, where it is discharged by overflow weir to an effluent channel that coveys it to 

the French Broad River. Both the ash pond and the stilling basin provide treatment by equalization, 

sedimentation and neutralization to the above-referenced individual waste streams. Additionally, both 

ponds have oil absorbent/containment booms permanently deployed for added protection. Seepage 

from both the 1982 pond and the 1964 pond drains directly to the French Broad River. Other seepage 

from the 1964 pond drains to the settling basin and is discharged via Outfall 001. 
Response to EPA CWA 308 and RCRA 3007 Information Request Progress Energy Carolinas, Inc. 

Asheville Steam Electric Plant

Page 4 of 15 

Alum is added as needed to the ash sluice water to aid settling. Boiler water is treated with ammonia, 

hydrazine, and sodium hydroxide. Sodium hydroxide is used as needed to maintain ash pond pH. 

There is no formal management plan for this discharge. 

Outfall 002 - Discharge of Once-Through Cooling Water to Lake Julian 

Once-through cooling water is used to supply cooling water for the steam condensers. The component 

cooling water system flows combine with unit 1 and 2 condenser flows prior to discharge to Lake 

Julian, a re-circulating, man-made cooling water reservoir. There is no formal management plan for 

this discharge. 

Internal Outfall 004 – Chemical metal cleaning wastewater to Outfall 001 

This waste stream may occasionally be discharged via Internal Outfall 004 to the ash pond treatment 

system or to the old ash pond (with prior approval). Generally chemical metal cleaning wastes are 

treated by evaporation in boilers. There is no formal management plan for this discharge. 

Internal Outfall 005 – Flue Gas Desulfurization wet scrubber wastewater treatment system to 

Outfall 001 

FGD wastewater is pretreated by chemical addition and clarification for solids removal, redundant 

filter presses and pH control using acid and caustic metering systems. Pre-treated FGD blowdown is 

mixed with dilution water to lower the chloride concentration and temperature prior to being sent to the 

constructed wetlands treatment system (CWTS). The CWTS consists of a Bulrush area, a rock filter, 

and a cattail area and discharged via Internal Outfall 005 thence to Outfall 001. This discharge began 

in approximately November 2005. An Operations and Maintenance Manual is used as the primary 

management plan for the FGD wastewater treatment system (see Appendix I). 

Stormwater Outfalls 

Stormwater from the facility access roads used to transport coal, oil and gypsum is discharged via 

Outfalls SW-1, SW-2, SW-3, SW-4 and SW-6 to Lake Julian. Outfall SW-5 drains to an unnamed 

tributary to Powell Creek. Outfalls SW-1, SW-2, and SW-6 utilize grassed swales for treatment. Other 

outfalls are discharged via riprap ditches or directly through culverts. 

The NPDES permit No. NC0000396 is attached in Appendix J. 

Available analytical data for hazardous constituents (as defined at 40 CFR 261, Appendix VIII) for the 

wastewater discharges are provided in the 2005 and 2010 NPDES renewal applications (Appendices A 

and B) and the Discharge Monitoring Reports (Appendix E). One exceedance of the NPDES permit 

limitations occurred in June 2007 for mercury (see Appendix E). 

References: 

1. 2005 NPDES Permit Application (Appendix A) 

2. 2010 NPDES Permit Application (Appendix B) 

(10)For all stormwater discharges associated with industrial activity from the facility, as defined at 40 

C.F.R. § 122.26(a)(14), identify the industrial activity (including the appropriate NAICS and SIC 

codes) that requires coverage under an NPDES permit. In addition to the information provided about 

these discharges in response to request #9, provide a copy of the facility’s current Stormwater 

Pollution Prevention Plan (“SWPPP”), as well as copies of its comprehensive site evaluations, 

inspection records, and monitoring results for the last five (5) years. If the company has not developed 

a SWPPP, provide an explanation for this decision. 

Stormwater discharges (SW-1, SW-2, SW-3, SW-4, SW-5, and SW-6) are associated with the new and 

old access roads and the rail line used to transport materials, including bulk chemicals, petroleum 

products, coal, and limestone, gypsum and ash materials. The industrial activity that requires coverage 

under the Clean Water Act is Electric Power Generation, Fossil Fuel, NAICS code 221112; and 

Electric Power Generation by Fossil Fuels, SIC code 4911. The Stormwater Pollution Prevention Plan 
Response to EPA CWA 308 and RCRA 3007 Information Request Progress Energy Carolinas, Inc. 

Asheville Steam Electric Plant

Page 5 of 15 

(SWPPP) is included as Appendix K to this response. Attachment 5 to the SWPPP includes 

certificates for annual inspection of non-stormwater discharges. Attachment 6 to the SWPPP includes 

records of Qualitative Monitoring inspections for stormwater discharges since 2004. Attachment 7 to 

the SWPPP includes records of secondary containment inspections. 

(11)Describe any groundwater monitoring system in place at the facility. Provide any groundwater 

sampling and analysis plans, groundwater monitoring results that detected releases of hazardous 

constituents, and corrective actions taken in response to groundwater contamination. Identify the 

location of groundwater monitoring wells, both active and inactive, on the map provided in response 

to request #2.

Groundwater monitoring at the Asheville Steam Plant has been conducted in the vicinity of the 1964 

and 1982 Ash ponds since 2006. The PZ-series wells (as shown in Figure 3) were installed in 2006 as 

part of a Monofill (Ash) Siting Study. Additional monitoring wells (GW-series) were installed in 2007 

(see Figure 3) as part of the voluntary monitoring effort conducted under the Utility Solid Waste 

Activities Group (USWAG). The GW-series wells and PZ-19 and PZ-22 have been sampled on a 

semi-annual basis since installation, and analytical results are summarized in Appendix L. 

Groundwater sampling and analysis is conducted by a subcontractor (Pace Analytical Labs) and results 

are provided to NCDENR on a semi-annual basis. A generalized water level map, well construction 

records, and analytical results are also provided in Appendix L. 

(12)Describe any known spills or releases to groundwater from each management area within the last ten 

(10) years.

No spills or releases to groundwater are known to have occurred in the last ten years from the 

management areas. Groundwater quality results from the monitoring system around the active and 

inactive ash pond (provided in question 11) show slightly elevated concentrations of some inorganic 

constituents. However, note that these results are from inside the compliance boundary as defined by 

the North Carolina 2L Groundwater standards. Progress Energy is in the process of siting background 

wells and wells located at the compliance boundary so that an analysis can be completed to determine 

if a statistically significant release has occurred. 

(13)For each management area, identify any seepage flows as well as their origins, flow paths, and 

destinations. Indicate the location of these flows on the map provided in response to request #2. 

Provide any reports or documentation with sampling results and/or information about the volumes of 

these seepage flows from the last five (5) years

1964 Ash Pond 

Shoulder drains extend along a berm on the slope of the original earthen dam. Any seepage from this 

area joins seepage from the area of the blanket drains described below. Flows have not been 

documented other than qualitatively. Specific flow path of the flow is not documented but it is 

expected to flow down gradient to join with the blanket drain flows. 

Seepage and/or spring activity has been observed in a location along the downstream side of the 

embankment about 100 feet north of the outlet structure. This seepage appears to be located near the 

exit of the drainage blanket along the juncture of the old and newer embankments. Flow volume of the 

seepage was estimated at 5 to 10 gpm in 2007. Specific flow path of the flow is not documented but it 

is expected to flow down gradient into the stilling basin and then toward the French Broad River. 

Other seepage and/or spring activity is observed at the downstream toe north of the activity described 

above. 

There is a discharge from a drainpipe located near the downstream end of the flume which conveys 

discharge from the 1982 Ash Pond to the NPDES monitoring point at the toe of the 1964 Ash Pond 

Dam. This drainpipe is believed to be the outlet for a drain installed beneath the concrete flume. 

Specific flow path of the seepage is not documented but it is expected to flow down gradient toward 

the French Broad River. 
Response to EPA CWA 308 and RCRA 3007 Information Request Progress Energy Carolinas, Inc. 

Asheville Steam Electric Plant

Page 6 of 15 

Locations and direction are depicted on Figure 2

1982 Ash Pond 

An internal blanket drain connected to toe-drainage piping along the downstream side of the dam 

provides seepage control. This drainage enters two adjacent seepage flow monitoring weirs which are 

located at the toe at the highest section of the dam. Flow of the seepage is measured monthly via these 

weirs. Measurements from the last 5 years are attached in Appendix M. Seepage from these toe drains 

flows to the French Broad River. The location of the measurement weirs and direction of drainage are 

shown in Figure 2. 

Natural seepage occurs through the embankment toe on the east abutment. The seepage at this location 

is observed but no flow volumes have been recorded. Specific flow path of the seepage at this location 

is expected to flow down gradient toward the French Broad River. The location of this seepage 

condition is shown on in Figure 2. 

References: 

1. MACTEC, November 26, 2007 “Five-Year Independent Consultant Inspection Report, Asheville 

Steam Electric Plant, Cooling Lake Dam and Ash Pond Dams”, Skyland, North Carolina. 

(Attachment to OSWER response document) 

2. S&ME, Inc. April 5, 2010 “Subsurface Investigation and Slope Stability Analysis of 1964 Ash 

Basin Dike”, Progress Energy – Asheville Plant report (Appendix N). 

3. Plant Knowledge

(14)Provide any hydrological studies conducted at the facility within the last five (5) years.

No hydrological studies were conduced at the Asheville Steam Plant within the last five years. 

(15)Identify any known drinking water wells within a five (5) mile radius of the facility’s outer boundaries. 

Provide any monitoring or sampling results that demonstrate hazardous constituents present within 

these wells.

Potable water for the facility is provided by the City of Asheville. Progress Energy is not aware of 

drinking water wells in the vicinity of the Asheville Steam Plant. 

(16)Describe the cooling system at the facility. If applicable, submit the source of the water withdrawn 

and the amount of water withdrawn in gallons per day. If applicable, describe the cooling water 

intake screen backwash system and identify the individual backwash flows, the volume, and the 

discharge points for each flow. Submit any sampling results of the backwash. 

The cooling system at the Ashville Steam Electric Plant is a once-through system with an estimated 

average water intake of 256.59 million gallons per day (MGD) of which 255.1 MGD is routed to the 

Unit 1 and 2 condensers. The maximum condenser flows for Units 1 and 2 are 150 MGD and 156 

MGD, respectively. The source of cooling water is Lake Julian, located northeast of the facility. The 

cooling system does not include a conventional intake screen but does have a bar screen and a coarse 

mesh fixed screen (chicken wire). There is no backwash system. 

 

(17)Provide analyses performed on slope stability, inflow design floods, or dam breaks for any of the 

management areas within the last five (5) years. 

1964 Ash Pond 

Slope stability analyses were conducted as described in Subsurface Investigation and Slope Stability 

Analysis of 1964 Ash Basin Dike, Progress Energy – Asheville Plant report, provided in Appendix N.

1982 Ash Pond 

Slope stability analyses were conducted in 2007 as documented in the report 5-Year Independent 
Response to EPA CWA 308 and RCRA 3007 Information Request Progress Energy Carolinas, Inc. 

Asheville Steam Electric Plant

Page 7 of 15 

Consultant Inspection of the Cooling Lake Dam and Ash Pond. The stability model diagrams are 

included in Appendix O of this response. The complete report was submitted in response to the 

previous OSWER request. 

Inundation Design Floods

Maps documenting the potential inundation areas are provided in Appendix P.

References: 

1. MACTEC, November 26, 2007 “Five-Year Independent Consultant Inspection Report, Asheville 

Steam Electric Plant, Cooling Lake Dam and Ash Pond Dams”, Skyland, North Carolina. 

(Attachment to OSWER response document and Appendix O for stability model diagrams) 

2. S&ME, Inc. April 5, 2010 “Subsurface Investigation and Slope Stability Analysis of 1964 Ash 

Basin Dike”, Progress Energy – Asheville Plant report (Appendix N). 
Response to EPA CWA 308 and RCRA 3007 Information Request 

Page 8 of 15 

Table 1. Waste and Wastewater “Management Areas” 

No. 

on 

Map 

Waste and 

Wastewater 

Management Area 

Management Area Description/ Function Storage Capacity 

Volume of 

Waste 

Currently 

Stored 

1 

Old Ash Pond (also known as the ’64 Pond) 

Materials currently stored in the inactive ash pond include fly ash, bottom ash, boiler slag, flue gas emissions control residuals in the constructed wetlands and stormwater. The duck pond (the free water area on the surface of the ’64 Pond) receives stormwater from nine storm drains from within the 230kV switchyard located near the center of the plant property, as well as water from two storm drains from the wastewater treatment building yard, and one from the area between the rail car storage and the 230kV switchyard. Sludge from various catch basins and sumps collected during maintenance activities are permitted to be stored in the ’64 Pond but typically are placed in the ’82 Pond. The duck pond allows received stormwater to evaporate and does not discharge to surface waters under normal conditions. 

1,380 acre-ft 1098 acre-ft (estimated) 

Stojob calremnot excwh3% estiacrfoo

2 

Current Ash Pond (also known as the ’82 Pond) [NPDES Outfall 001] 

Materials currently stored in the pond include fly ash, bottom ash, and boiler slag. Also receives ash sluice water, coal pile runoff, stormwater runoff, intermittent chemical metal cleaning wastewater(if not evaporated), and various low volume wastes (boiler blowdown, backwash from the water treatment processes, ash hopper seal water, plant drains, air preheater cleaning water). The ’82 pond provides equalization and neutralization and allows solids to settle prior to water discharge to the French Broad River. During maintenance, sludge from catch basins and sumps from the following sources may be disposed of in the 1982 pond: from coal, limestone, and gypsum piles, stormwater drainage system, and low volume wastes. In times of excessive rain events, water from the duck pond in the ’64 ash pond may be transferred to the ’82 pond to avoid overflows. 

~1,400 acre-ft 1,260 acre-ft 

Stocurthe relishe

Apcap
Response to EPA CWA 308 and RCRA 3007 Information Request 

Page 9 of 15 

Table 1. Waste and Wastewater “Management Areas”, continued 

No. 

on 

Map 

Waste and Wastewater Management Area

Management Area Description/ Function Storage Capacity 

Volume of Waste Currently Stored

AdInf

3 Ash sluice pipes Transfers ash from the facility to the ash pond. 

No permanent storage capacity 

Transfer pipe; not used for storage 

4 Gypsum storage dome Located adjacent to the FGD system and is capable of temporarily storing gypsum prior to sale and off-site shipment. 4,700 tons gypsum 

Negligible; continuously shipped offsite 

Gybypmo

5 

FGD wastewater treatment system (WWTS) 

Receives wastewater from the flue gas desulfurization (FGD) absorbers’ blowdown. The treatment system includes influent 

equalization with chemical feed, clarifier for solids removal, effluent equalization with chemical feed, equalization & cooling prior to wetlands. Pretreated FGD blowdown is mixed with dilution water to lower the chloride concentration and temperature prior to being sent to the constructed wetlands. 

73 gpm (design) 

WWTS is not used for storage; system is continuous flow through. 

Decalstre200 <2% ship

6 

Constructed wetlands treatment system (CWTS) [NPDES Internal Outfall 005] 

Receives pre-treated FGD blowdown. The constructed wetlands consist of equalization basins, a Bulrush area, a rock filter, and a cattail area, and are designed to remove selenium and mercury from the FGD blowdown. The CWTS is located within the ’64 Pond. 

Approximately 750,000 cubic feet 

CWTS is not used for storage; system is continuous flow through. 

Cap500deppla

7 

Hot Pond [NPDES Outfall 002] 

Cooling water from once-through cooling system (~255 MGD) is sent to the pond prior to discharge to Lake Julian through Outfall 002. 

45 acre-feet 42 acre foot 

Capappassfoowacon
Response to EPA CWA 308 and RCRA 3007 Information Request 

Page 10 of 15 

Table 1. Waste and Wastewater “Management Areas”, continued 

No. 

on 

Map 

Waste and Wastewater Management Area

Management Area Description/ Function Storage Capacity 

Volume of Waste Currently Stored

AdInf

8 Storm drainage to ash pond Collect stormwater within the plant footprint from storm drains (with the exception of those noted in this table) and direct to the ash pond. No permanent storage capacity 

Stormwater drainage system is not used for storage; system is continuous flow through. 

No 

9 

Administration building storm drainage 

Collect stormwater from the Administration building parking lot only and direct it to Lake Julian. 

No permanent storage capacity 

Stormwater drainage system is not used for storage; system is continuous flow through. 

No 

10 Sanitary sewer pipelines Collect and transfer sanitary sewer wastewater to the City of Asheville’s Metropolitan Sewage District System. No permanent storage capacity Transfer pipe; not used for storage Est11 Boiler Cleaning Waste Basin Basin has not been used for approx. 25 years and has been filled in and built over. Not applicable, basin filled in. Not applicable, basin filled in. 

1. Per request #5, the additional information includes the approximate proportion of free liquid and settled solids in stored wastewater and 

these volumes were determined. 
Response to EPA CWA 308 and RCRA 3007 Information Request 

Page 11 of 15 

Table 2. Waste Streams Generated at the Asheville Steam Electric Plant in the Past Five Years 

Response to Question 7 

 Waste Stream Description Final Disposition of Waste Stream Daily 

(MG

Wastewater(1) 

Potable and sanitary wastewater City of Asheville’s Metropolitan Sewage District System. Low Volume Waste: - 

Ash Hopper Seals Outfall 001 - French Broad River (5) Boiler Blowdown Outfall 001 - French Broad River (5) Truck Wash Outfall 001 - French Broad River (5) Water purification process waste Outfall 001 - French Broad River (5) Air Preheater Cleaning Outfall 001 - French Broad River (5) FGD Blowdown Outfall 005 thence to Outfall 001 - French Broad River 

Ash Sluice Water Outfall 001 - French Broad River (5) Coal Pile Runoff Outfall 001 - French Broad River (5) Storm Water Outfalls SW- 1,2,3,4,6 which flow to Lake Julian; and Outfall SW-5 – Tributary to Powell Creek Chemical Metal Cleaning Wastes Evaporation in boilers or discharge via Internal Outfall 004 thence to Outfall 001 – French Broad River (5) Water from Combustion Turbine Facility (blade washing) (6) Outfall 001 - French Broad River (5) Fire Protection Water Outfall 001 - French Broad River (5) Emergency Fire Protection Water Outfall 001 - French Broad River (5) Cooling Water Discharge Outfall 002 - Lake Julian Seepage from’82 ash pond French Broad River Seepage from ’64 ash pond French Broad River 5 
Response to EPA CWA 308 and RCRA 3007 Information Request 

Page 12 of 15 

Table 2. Waste Streams Generated at the Asheville Steam Electric Plant in the Past Five Years, continued 

 Waste Stream Description Final Disposition of Waste Stream

Da

Produ

(tp

Solid Waste(2) 

Bottom Ash ’82 Ash Pond for disposal or sale for beneficial use Fly Ash ’82 Ash Pond for disposal or sale for beneficial use Gypsum from FGD Recycled- sold for wallboard or cement production Filter Cake from FGD Blowdown Shipped to off-site landfill (see question 6) Asbestos Shipped off-site for disposal Infrequent Miscellaneous hazardous waste (lead-acid batteries, solvents, ignitable waste, etc.) Shipped to off-site hazardous waste facility Infrequent Miscellaneous non-hazardous waste Shipped to off-site waste facility infrequent 

(1) By definition in the Information Request, wastewater includes “process wastewater, waste slurry or sludge, cooling water, storm w

wastewater.” 

(2) By definition in the Information Request, waste streams other than wastewater include “by-products, residues, solid waste, and haz

(3) Annual flow of wastewater streams is estimated from daily flows, as stated in 2010 NPDES permit application, with a plant capacit

(4) Annual production of bottom ash and fly ash is estimated using combustion calculations and assumption of 80% fly ash and 20% b

Daily production of ash has been estimated using the annual volume and a plant capacity factor of 65%. 

(5) These wastes are directed to the ’82 Ash Pond for treatment prior to discharge through Outfall 001 to the French Broad River.

(6) The volume of water from the combustion turbine facility is estimated from 2 blade washing events per year, 2 turbines at the site, 

MGD per wash event per turbine. 
Response to EPA CWA 308 and RCRA 3007 Information Request 

Page 13 of 15 

Table 3 Hazardous and Non Hazardous Waste Streams Generated at Asheville Steam Electric Plant in the Response to Question 7 

Waste Stream Year Shipped Amount S

(poun

 unless other

Hazardous Waste RQ, NA3077, Hazardous Waste Solid n.o.s (lead), 9, PGIII 2010 500 RQ, NA3077, Hazardous Waste Solid n.o.s (lead), 9, PGIII 2009 20 UN3432 Polychlorinated Biphenyls solid, 9 PG III ** 2009 51 kUN1950, Waste Aerosols, 2.1 2009 150 UN3432 Polychlorinated Biphenyls solid, 9 PG III ** 2008 10 Hazardous Waste Solid n.o.s (lead), 9, NA3077, PGIII (D008) 2006 5 gallWaste paint and Related material, 3, UN1263,PGII 2006 55 galHazardous Waste Solid n.o.s (lead), 9, NA3077, PGIII (lead) 2006 106Waste Flammable Liquids, n.o.s 3, UN 1993, PGII, (acetone) 2005 500 Non-Hazardous Waste UN2795, Batteries Wet, filled with acid 8, PG III 2010 300 UN2809, Mercury contained in manufactured articles, 8, PGII 2010 7 Non hazardous, non regulated material (oily rags) 2010 800 Non hazardous, non regulated material (oily rocks) 2010 3,60UN2800, Batteries, wet, non spillable, 8, PGIII 2010 50 UN3090, Lithium batteries, 9, PGII 2010 10 Universal Waste Batteries, Batteries, dry, sealed, n.o.s. (nickel/cadmium) 2010 5 Universal Waste Batteries, dry, sealed, n.o.s. (alkaline) 2010 50 Universal Waste Lamps, 4 foot 2010 30 Universal Waste Lamps, 8 foot 2010 45 Universal Waste Lamps, metal halide 2010 25 Mercury contained in manufactured articles, 8 UN2809, PGII 2009 10 UN2800, Batteries, wet, nonspillable, 8, PGIII 2009 100 Alkaline Batteries, DOT non-regulated 2009 110 Universal Waste Lamps, 8 foot 2009 100 Universal Waste Lamps, 4 foot u shaped 2009 130 
Response to EPA CWA 308 and RCRA 3007 Information Request 

Page 14 of 15 

Table 3 Hazardous and Non Hazardous Waste Streams Generated at Asheville Steam Electric Plant in the Last Five 

Waste Stream Year Shipped Amount S

(pounds, unle

note

Universal Waste Lamps, 4 foot 2009 300 Universal Waste Lamps, metal halide 2009 90 Universal Waste Lamps, 6 foot 2009 50 Non regulated waste, water and mud 2009 1,200 gUN2794, batteries, wet filled with acid, 8, PGIII 2009 150 Non hazardous non regulated material, oily gravel 2009 500 Non hazardous non regulated material, oily absorbents 2009 150 Non hazardous non regulated material, oils 2009 200 Universal Waste Lamps, less than 4 foot 2008 50 Universal Waste Lamps, greater than 4 foot 2008 40 Non hazardous non regulated material, parts washer fluid 2008 290 UN2794, Batteries, wet, filled with acid, 8, PGIII 2008 80 Universal Waste Lamps, metal halide 2008 20 Batteries, dry (alkaline) 2008 80 Non hazardous, non regulated material (oily water) 2008 1,00Non hazardous non regulated material (oily absorbent) 2008 100 Non hazardous non regulated material (ethylene glycol) 2008 900 Non hazardous non regulated material (oily rocks) 2008 300 Universal waste lamps (not specified) 2008 250 Universal waste batteries (not specified) 2008 160 Non hazardous liquids (n.o.s) vibratory eliminators/used oil 2007 400 Non hazardous solids (n.o.s) fluorescent light bulbs 2007 150 Non hazardous non regulated material (oily water) 2007 213 gaBatteries, wet, filled with acid, 8, UN2794, PGIII 2007 Unkno

manifest list

Mercury contained in manufactured articles 2007 30 Mercury contained in manufactured articles (batteries) 2007 Unkno

manifest indica

Non hazardous liquid not specified 2007 55 gal
Response to EPA CWA 308 and RCRA 3007 Information Request 

Page 15 of 15 

Table 3 Hazardous and Non Hazardous Waste Streams Generated at Asheville Steam Electric Plant in the Last Five 

Waste Stream Year Shipped Amount S

(pounds, unle

note

Universal Waste Lamps, 4 foot 2007 166 piUniversal Waste Lamps, 8 foot 2007 40 pieUniversal Waste Lamps, small bulbs 2007 31 pieRQ, mercury contained in manufactured articles, 8, UN2809, PGIII 2006 500 Non regulated liquids, used oil 2006 55 galNon hazardous liquid not specified 2006 330 gaNon hazardous solids not specified 2006 1,00Non regulated solids centrifuge parts 2006 4 pieStockpiled soil 2006 106.26 Universal waste - manometer 2006 10 Non hazardous material n.o.s., oil, sand and water 2006 596 gaNon hazardous material n.o.s., oil and sand 2006 498 gaUniversal waste bulbs 2006 3 contaNon hazardous material, used grease 2006 40 Non hazardous liquid, turbine oil 2006 495 gaUniversal waste, batteries 2006 75 Non hazardous solid n.o.s (soil contaminated with hydraulic fluid) 2006 7,50Universal waste bulbs not specified 2005 Not speMercury contained in manufactured articles 2005 172 Universal waste batteries 2005 18 packMercury contained in manufactured articles, 8, UN 2809 (lamps) 2005 50 Universal waste thermometers 2005 21 packNon regulated liquid, pulv. oil 2005 330 gaMercury contained in manufactured articles 2005 14 packUniversal waste batteries 2005 2 packNon regulated solids n.o.s.(oily materials) 2005 1,50

*Daily and annual production of these wastes varies in response to maintenance and operation activities at the site. **Replacement light bulbs not otherwise labeled as PCB free. Not believed to be hazardous materials. Note: Data are based on waste manifests, included in Appendix Q.