NC0000396_Staff Report and Recommendations_19950511

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SOC PRIORITY PROJECT: Yes No XX
IF YES, SOC NUMBER
TO: PERMITS AND ENGINEERING UNIT
WATER QUALITY SECTION
ATTENTION: GREG NIZICH
DATE: May 11, 1995
NPDES STAFF REPORT AND RECOMMENDATION
COUNTY Buncombe
PERMIT NUMBER NC0000396
PART I - GENERAL INFORMATION
1. Facility and Address: Carolina Power & Light Company
Asheville Steam Electric Plant
NC Hwy 146
Skyland, North Carolina
Mailing: Post Office Box 1551
Raleigh, North Carolina 27602
2 . Date of Investigation: May 9, 1995
3 . Report Prepared By: Max L. Haner
4. Persons Contacted and Telephone Number: Winston T. Traylor,
Manager - Western Area Fossil & Hydro; Gary Whisnant, Senior
Engineer; Deborah Cogburn, ORC; Paul Tate; Former ORC;
(704) 687-5201
5. Directions to Site: The entrance to the existing CP&L
facility is a private road located 0 .4 mile east of the
intersection of NC Hwy 146 & I-26, Buncombe County south of
Asheville, N.C.
6. Discharge Point(s) , List for all discharge points:
001 Latitude: 35° 27' 56" Longitude: 820 33' 01"
002 Latitude: 350 28' 10" Longitude: 820 32, 20"
Attach a USGS map extract and indicate treatment facility site and
discharge point on map.
U.S.G.S. Quad No. F8NE U.S.G.S. Quad Name Skyland, NC
7 . Site size and expansion area consistent with application?
X Yes No If No, explain:
8. Topography (relationship to flood plain included) : Not in flood
plain
Page 1

4 -
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9 . Location of nearest dwelling: >500 ft (est)
10. Receiving stream or affected surface waters: French Broad River
(001) & Lake Julian (002)
a. Classification: 001 Class "WS-IV" , 002 Class "WS-IV"
b. River Basin and Subbasin No. : French Broad, 040302
C. Describe receiving stream features and pertinent downstream
uses: Agriculture, wildlife. Also, within the 10 miles of
the formerly proposed intake on the French Broad River by the
the Asheville/Buncombe Water Authority (ABWA) . Upon
reclassification of the Mills River and French Broad River in
Henderson County to WS class (currently being processed for
recommendation to EMC) , WS classification for the lower
French Broad River will be withdrawn according to
correspondance from the ABWA.
PART II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1. a. Volume of wastewater to be permitted Flow Not limited for
001 or 002
b. What is the current permitted capacity of the Wastewater
Treatment facility? Not limited
C. Actual treatment capacity of the current facility (current
design capacity 001 - 5-7 year storage capacity in Ash
Basin to handle normal wastewater flow @ approx 1. 7+ MGD:
(Ash Sluice Water (1.7 MGD) ; Coal Pile Runnoff (0 . 010 MGD) ;
Boiler Blowdown, Water Treatment Wastes and Plant Drains
(0. 026 MGD) ; 002 once through cooling water at 287 MGD and
Service Water @ 57. 2 MGD
d. Date (s) and construction activities allowed by previous
Authorizations to Construct issued in the previous two years:
11/21/94 - ATC for NaOH feed to ash lagoon for pH control -
under construction.
e. Please provide a description of existing or substantially
constructed wastewater treatment facilities: Existing
wastewater treatment facility (001) is an ash settling
basin with overflow structure and discharge to the French
Broad River. The storage capacity of this basin is in excess
of 100 days prior to discharge.
f. Please provide a description of proposed wastewater treatment
facilities: N/A
g. Possible toxic impacts to surface waters: Copper causes
failure of toxicity test if pH allowed to become acidic.
h. Pretreatment Program (POTWs only) :
in development approved
should be required not needed
Page 2

2 . Residuals handling and utilization/disposal scheme:
a. If residuals are being land applied, please specify DEM
Permit Number
Residuals Contractor
Telephone Number
b. Residuals stabilization: PSRP PFRP OTHER
C. Landfill:
d. Other disposal/utilization scheme (Specify) : Bottom ash has
previously been mined for use in concrete block, and
construction foundation work. Ash no longer being mined
since market changes have made ash mining unprofitable. Old
ash basin can be used for disposal when use of storage space
in existing basin is no longer viable. Life of existing basin
estimated at 5-7 years.
3 . Treatment plant classification (attach completed rating sheet) :
Class I
4. SIC Codes (s) : 4911
Primary 68 Secondary 69, 70, 14
Main Treatment Unit Code: 50000
PART III - OTHER PERTINENT INFORMATION
1. Is this facility being constructed with Construction Grant Funds
or are any public monies involved. (municipals only) ? N/A
2. Special monitoring or limitations (including toxicity) requests:
None
3 . Important SOC, JOC, or Compliance Schedule dates: (Please
indicate)
Date
Submission of Plans and Specifications
Begin Construction
Complete Construction
4. Alternative Analysis Evaluation: Has the facility evaluated all
of the non-discharge options available. Please provide regional
perspective for each option evaluated.
Spray Irrigation:
Connection to Regional Sewer System:
Subsurface:
Other disposal options:
5. Other Special Items: None
Page 3

PART IV - EVALUATION AND RECOMMENDATIONS
The facility operates properly and is able to meet limits assigned
to the current permit as well as Water Quality Standards assigned
to the French Broad River. It is recommended that the permit go to
public notice and baring any substantive adverse comments, be
reissued as proposed. Monitoring should be unchanged from existing
permit.
0z'/
Signat re of Re Preparer
Water ual ' ty Regional Supervisor
17�'
Da)(e
Page 4

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Plant Site Map
Carolina Power & Light Company
Asheville Steam Electric Plant
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April 13, 1995`
CP&L Sutton - NC0000396 -
Outfall 001 (Ash Pond)
Effluent Guideline Limitations
Monthly Daily
Effluent Characteristics Average (mg/1) MaIdmum (mg/1) Comments
Total Suspended Solids 30.0 100.0 BPT
Oil And Grease 15.0 20.0 BPT
H 6 to 9 BPT
Type of Product Produced 1000 Lbs/Day Produced Effluent Guideline Reference
40 CFR 423.12(b)(4) Steam Electric Power
Plant is 392 MWe capacity

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Carolina Power&Light Company liV
PO Box 1551
411 Fayetteville Street Mall
Raleigh NC 27602
File No.: 830-1-A-5
Ms. Coleen H. Sullins, P.E.
Permits and Engineering Unit
North Carolina Division of Environmental Management -~
Post Office Box 29535 ,a
Raleigh,North Carolina 27602-0535
Subject: Asheville Steam Electric Plant
NPDES Permit No.NC0000396
Request for Permit Renewal
Dear Ms. Sullins:
The current NPDES permit for Carolina Power & Light Company's (CP&L) Asheville Steam
Electric Plant in Buncombe County expires on September 30, 1995. CP&L hereby requests that the
NPDES permit for this facility be renewed. The Asheville Plant is expected to continue to operate
over the next five years as it has previously,and no major changes are expected that might affect the
discharges from the plant.
Enclosed are EPA Forms 1 and 2C (in triplicate)and a check for the $400.00 application fee. Also
enclosed are calculations which demonstrate sufficient storage volume in the ash pond to allow
cotreatment with conventional limits in accordance with EPA guidance(Enclosure 1). -
Part III,Condition P,of the present NPDES permit for the Asheville Steam Electric Plant,requires
CP&L request a continuation of its 316(a) variance beyond the term of the present permit.
Enclosed (Enclosure 2) is an EPA Guidance Letter dated August 11, 198.8 outlining the general
procedure to be followed in requesting the continuance of a 316(a)variance.
The following is CP&L's response to the pertinent factors contained in the EPA General Procedure
for the reissuance of the 316 (a)variance:
1. The permittee must request that the variance be continued.
Response: CP&L hereby requests continuation of the 316 (a)variance contained in its
present NDPES permit for the Asheville Steam Electric Plant.

Mr. Coleen H. Sullins, P.E. - 2 -
2.
2 -2. Plant operating conditions and load factors are unchanged and are expected to remain so for
the term of the reissued permit.
Response: The plant operating conditions and load factors are unchanged and are
expected to remain so for the term of the reissued permit.
3. There are no changes to plant discharges or other discharges in the plant site area which
could interact with the thermal discharges.
Response: There have been no changes to the Asheville Plant discharges or other
discharges to Lake Julian which could interact with the thermal discharges.
4. There are no changes to the biotic community of the receiving water body which could
impact the previous 316 determinations.
Response: As demonstrated by CP&L's annual Environmental Monitoring Reports,
which are routinely submitted to the Director of the Division of
Environmental Management, the biotic community of Lake Julian has not
changed since issuance of the current permit.
Please contact Mr. R. K. Miller of my staff at [phone] if you have any questions or need
additional information.
Yours very truly,
'f5-e".0, 440k�
George J. Oliver,Ph.D.
Manager, Environmental Services
RKM/ekb (95-07.rkm)
Enclosures
cc: Asheville Regional Office DEM

Carolina Power & Light Company
Asheville Steam Electric Plant
National Pollutant Discharge Elimination System Permit Number NC0000396
Section V: Sampling of Waste Streams
Since the current permit does not require an annual pollutant analysis, a priority pollutant analysis
was not performed on Outfall 002 (Once-Through Cooling Water). Mr. Greg Nizich with the
Permits and Engineering Unit of the North Carolina Division of Environmental Management
concurred with this decision. If, upon review of the application for renewal, a priority pollutant
analysis is deemed necessary an analysis will be performed on the outfall.

FRENCH BROAD MAKEUP WATER
RIVER INTAKE
D SETTLING FIRE
BASIN PROTECTION PLANT DRAINS
SYSTEM
LAKE JULIAN K INTAKE UNITS 1 &2 DISCH. 002
STRUCTURE CONDENSERS B LAKE JULIAN
C
SERVICE WATER F CHEMICAL L
PLANT SYSTEMS HEAT METAL CLEANING INCINERATION
EXCHANGER G WASTES IN BOILERS
L
I"I i
ASH SLUICE TREATMENT
WATER BASIN
H L
DAM SEEPAGE
I
LOW VOLUME E SECONDARY DISCH. 001 FRENCH BROAD
ASH POND SETTLING
WASTE SOURCES BASIN A RIVER
K J
STORM WATER COAL PILE RUNOFF
PUBLIC WATER POTABLE& C
SUPPLY SANITARY PUBLIC SEWAGE
SYSTEM SYSTEM
SCHEMATIC OF WATER FLOWS
CAROLINA POWER&LIGHT COMPANY
ASHEVILLE STEAM ELECTRIC PLANT
BUNCOMBE COUNTY
SKYLAND,NORTH CAROLINA
SHEET 1 OF 2
MARCH 1995

Carolina Power & Light Company
Asheville Steam Electric Plant
National Pollutant Discharge Elimination System Permit Number NC00003%
Water Flow Rates
Stream NA= Average Flow Comments
A Ash Pond Discharge 1.86 MGD Outfall 001
B Once-Through Cooling 287 MGD Outfall 002
C Plant Potable and Sanitary Uses 0.002 MGD To POTW
D Makeup to Lake from River 5000 GPM Utilized During
Dry Weather
E Low-Volume Wastes
.Ash Hopper Seals 0.05 MGD
.Sandbed Filter Backwash 2600 gal/event 1/Week Avg.
.Water Softener Regeneration and 3100 gal/event 1/Week Avg.
Washing
Boiler Blowdown 0.006 MGD Estimated
Plant Drains 0.01 MGD
F Services Water Heat Exchangers
Non-Contact Cooling 53.2 MGD Estimated
G Ash Sluice Water 1.7 MGD Estimated
H Dam Seepage 0.09 MGD Calculated
I City Water Supply to Boiler Makeup 0 MGD Rare Usage
J Coal Pile Runoff 0.01 MGD BawdonAmr4p
Annual Rainfall
of 47"and 50%
Runoff
K Stormwater 0.04 MGD
L Chemical Metal Cleaning Wastes 0-90,000 gals Normal Practice
(0 gals anticipated) is to Incinerate
Wastes.
Page 2 of 2

Carolina Power & Light Company
Asheville Steam Electric Plant
National Pollutant Discharge Elimination System Permit Number NC0000396
Description Of Waste Streams
The Asheville Steam Electric Plant is located in Arden, North Carolina eight miles south of
Asheville, North Carolina. The Asheville Steam Electric Plant is a coal-fired, steam cycle electric
generating plant with two generating units. The Plant has a 320-acre cooling lake (Lake Julian)
on the east side of the French Broad River in Buncombe County, North Carolina. Water is
withdrawn from the French Broad River as required to make up evaporative and seepage losses
from the cooling lake. Make up pumping rates are highly variable depending upon natural
weather conditions, plant capacity/generation, plant operations, maintenance activities, quality of
water available in the river, and cooling lake water level. The Plant's ash pond, which is located
east of the French Broad River and south of the plant, discharges into the French Broad River.
Chemical constituents contained in this discharge 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 on the
Periodic Table, either singularly or in any combination, may from time to time be contained in
this discharge.
Outfall 001 - Discharge from Ash Pond to French Broad River
The ash pond receives ash sluice water, low volume wastes, and coal pile runoff. The pond
provides treatment by sedimentation, neutralization, oxidation, equalization, and absorption to the
above-referenced individual waste streams prior to discharging to the French Broad River. Water
leaves the ash pond via a standpipe with skimmer and flows by pipe and lined ditch to a secondary
basin, where it is discharged by overflow to a ditch that conveys it to the French Broad River.
Detailed descriptions of the individual waste streams are below.
Page 1 of 4

Carolina Power & Light Company
Asheville Steam Electric Plant
National Pollutant Discharge Elimination System Permit Number NC0000396
Ash Sluice Water
Fly ash and bottom ash from both units is hydraulically conveyed by an ash sluice pipeline
to the ash pond.
Coal Pile Runoff
Rainfall runoff from the coal pile is collected in drainage ditches that surround the coal
pile. The drainage ditches are routed to the ash pond for treatment.
Stormwater
Rainfall runoff from the plant area which includes parking lots is routed to the ash pond
for treatment.
Low Volume Wastes
Boiler make up water is withdrawn from Lake Julian, filtered, softened, and evaporated
for treatment. The filter backwash, softener regeneration, and softener rinse are
discharged to the ash pond. The water softeners are regenerated using salt. Boiler water
is treated with ammonia, hydrazine, and sodium hydroxide. Boiler and evaporator
blowdown and drainage is sent to the ash pond and may contain small quantities of these
chemicals. Some molybdate waste from the closed cooling water system is created
through valve leakage and maintenance activities and is discharged to the ash pond. A
furnace ash hopper seal is maintained by using plant water. A standard operating water
level is maintained in a seal trough for the ash hopper seal. Overflow from this trough is
pH adjusted and subsequently discharged to the ash pond. All plant area floor drains are
routed to the ash pond and include equipment drainage and wash down along with rainfall
runoff.
In many cases, added chemicals are consumed or chemically altered during the plant
processes. Only trace amounts might be recoverable in water entering the ash pond.
Because the ash pond serves as a final treatment basin and receives greater volumes of
water from other inflows, detectable levels of these chemicals would not occur in ash pond
Page 2 of 4

Carolina Power & Light Company
Asheville Steam Electric Plant
National Pollutant Discharge Elimination System Permit Number NC0000396
discharges.
Chemical Metal Cleaning Wastes
The boilers are chemically cleaned every five-to-seven years using a weak citric acid
solution. This cleaning solution and its' rinses are stored on site for disposal by
incineration in an operating unit's furnace. Typical cleanings would result in a waste of
approximately 80,000 gallons once every two-to-five years. Should incineration not be
used, the waste will be routed to a treatment basin for neutralization and precipitation prior
to discharge to the ash pond. Cleaning of other heat exchanger surfaces may produce
5,000-10,000 gallons every three-to-five years.
Outfall 002 - Discharge Canal to Lake Julian
Once-Through Cooling Water
This flow provides condenser cooling water for the generating units 1 and 2 rated with a
net dependable capacity of 198 MWe and 194 MWe, respectively. Condenser flows for
units 1 and 2 are 131 MGD and 156 MGD, respectively.
Once-through cooling water is used to supply non-contact cooling water for the component
closed cooling water system. The component closed cooling water system flows combine
with unit 1 and 2 condenser flows prior to discharge to Lake Julian. Maximum component
closed cooling water system flows for unit 1 and 2 are 25.9 MGD and 29 MGD,
respectively.
Control of biological fouling on heat-exchanger surfaces is accomplished by addition of
sodium hypochlorite as required, which is usually less than 2 hours per day per unit, with
a net total residual chlorine of less than 0.2 ppm discharged during that period. Cooling
is accomplished by evaporation from the surface of Lake Julian and mixing and convection
with lake waters. Make up for Lake Julian is from the French Broad River. natural runoff
and creek flows. Water is pumped from the French Broad River during dry periods to
Page 3 of 4 i��

Carolina Power & Light Company
Asheville Steam Electric Plant
National Pollutant Discharge Elimination System Permit Number NC00003%
supplement the flow. Although discharge from Lake Julian to the river is extremely rare,
any occurrence would be during periods of heavy rainfall.
Other Discharges
Plant Potable and Sanitary s stem
The supply of water for plant potable and sanitary use is obtained from the
Asheville/Buncombe Water Authority system and waste from this system is discharged to
the Metropolitan Sewage District System.
Substation Stormwater Drains
Rainfall runoff from the switchyard substation for the plant is currently collected in yard
drains and routed to Lake Julian, however, plans are in place to route the flow to the ash
pond for treatment. Rainfall runoff from the substation located adjacent to the plant is
conveyed by pipe to Lake Julian. It is CP&L's understanding that these stormwater
discharges are not currently regulated under "Phase I" of the stormwater rules, which
address discharges associated with industrial activity.
Page 4 of 4

Carolina Power & Light Company
Asheville Steam Electric Plant
National Pollutant Discharge Elimination System Permit Number NC0000396
Chemicals Used in Process Streams
Chemical Total Quantity Used (perYear) Frequency Pulp4.se
Hydrazine 400 gallons (35%) Continuous Oxygen scavenger
in boiler
Ammonium 500 gallons Continuous pH control of
Hydroxide boiler water
Sodium 24,000 gallons Continuous pH control of
Hydroxide ash pond
Sodium 30 gallons (50%) As required pH control of
Hydroxide boiler water
Sodium 10,000 gallons (15%) Daily during Prevent algae buildup
Hypochlorite warm months on heat exchangers
Molybdate 100 pounds As required Corrosion control in
closed cooling water
system
Sodium Chloride 25,000 pounds As required Water softener
regeneration

Carolina Power & Light Company
Asheville Steam Electric Plant
National Pollutant Discharge Elimination System Permit Number NC0000396
Co-Treatment Capacity of Ash Pond
Worksheet
Objective: Demonstrate that the Ash Pond has a remaining storage volume equivalent to the
sum of:
.Storm flows
.Maximum 24-hour plant waste flows
.Solids to be added
and therefore is acceptable for co-treatment with BPT and BAT limits.
Ref: Hanmer memorandum (EPA) dated 8/25/85.
Calculations
A. Storm Flows
1. a. Surface area of pond 24 ac
b. Pond drainage area (include
surface area of plant with
runoff discharges to pond) 46 ac
Total ac mac
Note: If total ac is less than 6400 ac then increase total by 20%.
Total ac 7n * 1.2 = Rd ac
2. 10-year 24-hour storm = —i7 in (Ref: Exhibit 2.3, Guide for Sediment
Control in North Carolina, USGS, 1973.)
3. Calculate maximum 24-hour storm input to pond (ac-ft). (Use 1.0 runoff
coefficient.)
Ac-ft = 84 ac4A-1) * 5.7 in (A-2) * 1 ft/12 in
An ac-ft
B. Maximum 24-hour volume from plant lines (excluding storm drain runoff)
1. Maximum 24-hour flows from plant lines _ MG
2. Calculate 24-hour maximum input to pond
Ac-ft = �5_ MG (B-1) * 3.07 ac-ft/MG
10 7 01). ac-ft
Page 1 of 3

Carolina Power & Light Company
Asheville Steam Electric Plant
National Pollutant Discharge Elimination System Permit Number NC0000396
C. Solids to be added (estimate of ash to be added period 1995 to 2000)
1. Total ash produced (Period: 1984 to 1993) 7AR R 1> tons
2. Calculate average tons ash/yr
Ton/yr = 7RQ.R1 (C-1) / 10— yrs (C-1)
= 76,QR 1 tons/yr
3. Ash added until expiration of new permit ( September 1995 to September 2000)
assume ash produced will average historic production.
Tons = 76 A I tons/yr (C-2) Is yr
IR4405 tons
4. (Ash volume = 0.000813 ac-ft/ton)
Ac-ft = 184,2051 tons/yr (C-2) * 0.000813 ac-ft/ton
III ac-ft
D. Total ash pond storage necessary for co-treatment
1. Maximum 24-hour storm flow (A-1) ac-ft
2. Maximum 24-hour plant flow (B-2) >> ac-ft
3. Solids added (C-4) ac-ft
Total ac-ft
E. Storage volume available in pond March 1945
1. Original design size Win in ac-ft
2. Ash added since construction R791;1 Q tons
3. Calculate ash volume added ( Ash volume = 0.000813 ac-ft/ton )
Ac-ft = R77,I19 tons/yr (E-2) * 0.000813 ac-ft/ton
7nQ ac-ft
Page 2 of 3

Carolina Power & Light Company
Asheville Steam Electric Plant
National Pollutant Discharge Elimination System Permit Number NC00003%
4. March 1994 remaining volume excluding mining amounts
Ac-ft = 11(X1 ac-ft (E-1) - M9 ac-ft (E-3)
191 ac-ft
5. Volume of ash mined ( Period 1982 to 1201 )
Ac-ft = 141 ac-ft
6. Total volume of pond remaining
Ac-ft = '191 ac-ft (E-4) + 141 ac-ft (E-5)
711) ac-ft
F. Co-treatment Capacity Demonstration
1. Storage volume available in pond (E-6) 71? ac-ft
2. Storage required in pond (D) IF4 ac-ft
3. Capacity is adequate if F-1 > F-2
( 717 ac-ft > 164 ac-ft )
The pond is/is-net acceptable for co-treatment with BPT and BAT limits.
Notes : Ash pond was mined and the removed ash was subsequently sold for the period
1989-1993.
Page 3 of 3

U S DEPARTMENT Of AGRICULTURE NORTH CAROLINA SOIL CONSERVATION SERVICE
6a• 63' 67' 61' 60• 79' 78• 77• 76'
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4.6 4.8 VIRGINIA 6
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6.5 ♦
7
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Scale In U11.6
O 25 so 75 100
RAINFALL DATA MAP
10-YEAR I DAY PRECIPITATION (INCHES)
TP-40 6-70 4-L-29541-14
6+- 67• a• n• 60• » 7r n• 76•
V oa.[CI/D4r .04TH. III Iola
Rev. 6-70 4-L-23940-S

.4k ENCLOSURE 2
UNITED STATE'S ENVIRONMENTAL PROT11=0N AGENCY Page 1 of 2
REGION IY
ias C9VRTI.AK0 eTRKM
ATLANTA,eiORd1A SoM
August 1l. 1608 PERMIT
FAW: 4W -ftp AUG .
Mr. ayde aloin
Division of Water
Kr Kat=l abs=ws a avi=Mntal
8sotectim min t
> 31-1fl- Plass
16 Aeilly Pad
F. rt. Er 40601
W: NZ,
for Fa7mit Faissuanoe
Dow
Qnstiar:e have arisen as to what pzoosdurss and aativitiss are neaeaaary in
zein dno a permit fac a facility t hI& has thesmLi llmftations bawd an a
previous vari&vo granted undar Section 316(a) of the Clean Mhtar Act. nA
-
llallarinp is provided as a follar� to infbz:aation provided at the E*bnary
1988. BPJiAtate meeting in Gostin, Florlda.
A tlmrmal wriance granted under 5316(a) teammates an expiration of the W=
permit of *dch it in a past (At*achmsnt A). Proesd sm f= a reiamwnoe ass
virtually uncharged fry an initial determination, on m aurrt of data neoessaiy
to s:pp=t the Variance at the tine Of reiearanoe rill prcbabiy be minimal,
Bw&vm, if ooeditiens have charged __! ally, a signif osat quantity of inforw-
tion =W be wedwL
Mus 1b the extent that peaaittses are unswgre of these regain,},, thwy
should be notified of them expeditiously so that they can be p nmvd.
'fes general prooedws is as tol'on r
1. Mw p umdttee must regw6t that the variance be aontisyusd, preferably at the
time 09 ps:mit appl1cmt1on. At that tial, he should provide a basis foe that
aonti:aranoe. ?be- basis could be as simple as: (a) plant cperatinq OwAltians
and losd fast=-am unoharprd and ase e3pected to rsmein no foe the tens of
the zeissue0 permit► (b) t2xest ase no ahe:ges (to his knowledge) to plant
disehasyes or other diadwp o in the plant sitz area which could intvact
with the thenaal disohasges. and (C) t ve are no charges (to him knowledge)
to the bU*ie ammityy et the receivirg Water body Which would 4ROMM the
ptwdau 316 deter ainations.
2. if the psssittinp authority agrees with the basis, appropriate peatit condi-
tions Would be deve1cped= otlyexvise, additiarvsl data would be requested as
fmdsd. Request for sdditianal data must be side within 60 days og receipt os
the appllestien (Answer to Question 7. Attaahoolvt A). Aftitional etudieq man
be ass" a persit z+equiremsat if needed (Answer to Question 7).

Amust 110 19 8
• • Page 2 of 2
• 3. IM !'set Shrrst/ationala should contain a swmry of 316 variance activities
f= the prwicus pumits (dates. detatminations, limitations. ate.) and an
indication of the proposed basis for continuing Us 316 variarm. amgde
larquags-is included in Attadmnt B.
4. MW Ablic cotiao requires wnts are contained LA f171.75(a). Sagde larquVe
in also included in Attaabmnt B.
M=ld you lave Rave QW4tiaw ar need asaistana, teal tree to contact me at
404/347-3013•
eirMrrly yourn.
Charm H. xaplaw. p.s.
National Mm tt stem electric/tater
■'fel,oau�+ss
CC: Mr. R. RMM SWtt
I&nticsl lettats sent to all atatse in Region IV

s
FACT SHEET FOR WASTELOAD ALLOCATION
Request# 8290
Facility Name: Carolina Power&Light-Asheville Steam Electric Plant-OUTFALL 001
NPDES No.: NC0000396
Type of Waste: Industrial- 100%
Facility Status: Existing
Permit Status: Renewal
Receiving Stream: French Broad River
Stream Classification: WS-IV
Subbasin: 040302
County: Buncombe Stream Characteristic:
Regional Office: Asheville USGS #
Requestor: Nizich Date:
Date of Request: 4/17/95 Drainage Area(mi2): 655
Topo Quad: F8NE Summer 7Q10 (cfs): 375
Winter 7Q10(cfs):
Average Flow (cfs): 1680
30Q2 (cfs):
IWC (%): 0.77
Wasteload Allocation Summary
(approach taken,correspondence with region,EPA,etc.)
Power plant requesting renewal of existing NPDES permit for Ash Pond Discharge. Instream
Assessement recommends renewal of existing limits.
Special Schedule Requirements and additional comments from Reviewers:
O i
Recommended by: Date: 5/5/95
Reviewed by
Instream Assessme V Date: 5110115
Regiopervisor: Date:
Permi &Engineering: Date:
RETURN TO TECHNICAL SERVICES BY: JUN 0 9 1995
FP�DILD T�Fn�, i
MAY 1 6 ,,

2
TOWS/METALS/CONVENTIONAL PARAMETERS
Type of Toxicity Test: Acute(Daphnid 48hr)LC50
Existing Limit: 77%
Recommended Limit: 77%
Monitoring Schedule: JAN APR JUL OCT
Existing Limits
Monthly Avg. Daily Max.
Wasteflow(MGD): NO LIMIT
TSS (mg/1): 30 100
pH(Sin: 6-9
Oil&Grease(mg/1): 15 20
Iron(µg/1): monitor
Selenium(µg/1): monitor
Copper(µg/1): monitor
Arsenic(µg/1): monitor
Total Nitrogen(mg/1): monitor
Total Phosphorus(mg/1): monitor
Daily Max. 1V nthly Average WQ or EL
Wasteflow(MGD): NO LIMIT
TSS (mg/1): 30 100
pH(Sin: 6-9
Oil&Grease(mg/1): 15 20
ken W).- McAibe�.
Selenium(µg/1): monitor
Copper(µg/1): monitor
Total Nitrogen(mg/1): monitor
Total Phosphorus(mg/l): monitor ' 7
O-Toy, mal?1,6 u50't-js _s11�d rt 0 -v1(
Limits Changes Due To: Parameter(s) Affected
Change in 7Q10 data
Change in stream classification
Relocation of discharge
Change in wasteflow
New pretreatment information
Other(onsite toxicity study,interaction,etc.)
Parameter(s)are water quality limited. For some parameters,the available load capacity of the immediate
receiving water will be consumed. This may affect future water quality based effluent limitations for additional
dischargers within this portion of the watershed.
OR
X_ No parameters are water quality limited,but this discharge may affect future allocations.

3
INSTREAM MONITORING REQUIREMENTS
Upstream Location:
Downstream Location:
Parameters:
Special instream monitoring locations or monitoring frequencies:
MISCELLANEOUS INFORMATION&SPECIAL CONDITIONS
AAdd quacy of Existing Treatment
Has the facility demonstrated the ability to meet the proposed new limits with existing treatment
facilities? Yes No
If no,which parameters cannot be met?
Would a "phasing in" of the new limits be appropriate?Yes No
If yes, please provide a schedule (and basis for that schedule)with the regional
office recommendations:
If no, why not?
Special Instructions or Conditions
Wasteload sent to EPA? (Major) (Y or N)
(If yes,then attach schematic, toxics spreadsheet,copy of model,or, if not modeled, then old
assumptions that were made, and description of how it fits into basinwide plan)
Additional Information attached? (Y or N) If yes,explain with attachments.

Facility Name _Carolina Power&Light-Asheville Permit# NC0000396 _Pipe# 001 _
ACUTE TOXICITY PERMIT LIMIT (QRTRLY)
The permittee shall conduct acute toxicity tests on a Quarterly basis using protocols defined as definitive in E.P.A.
Document 600/4-85/013 entitled "The Acute Toxicity of Effluents to Freshwater and Marine Organisms." The
monitoring shall be performed as a Dolma lulu or Ce�hnia 48 hour static test,using effluent collected as a
24 hour composite. The LC50 of this effluent using the previously stated methodology may at no time in any
toxicity test be less than 77_%. Effluent samples for self-monitoring purposes must be obtained during
representative effluent discharge below all waste treatment.The first test will be performed gfter thirty dans from
the effective date of this permit during the months of_JAN APR JUL OCT
The parameter code for this test if using Daphnia Dulg is TAA3D. The parameter code for this test if using
Ceriodanhnia is TAA3B. All toxicity testing results required as part of this permit condition will be entered on the
Effluent Discharge Monitoring Form (MR-1)for the month in which it was performed,using the appropriate
parameter code. Additionally,DEM Form AT-1 (original)is to be sent to the following address:
Attention: Environmental Sciences Branch
North Carolina Division of
Environmental Management
4401 Reedy Creek Road
Raleigh, N.C. 27607
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 single quarterly monitoring indicate a failure to meet specified limits,then monthly monitoring will
begin immediately until such time that a single test is passed. Upon passing,this monthly test requirement will
revert to quarterly in the months specified above.
Should any test data from either these monitoring requirements or tests performed by the North Carolina Division
of Environmental Management 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
retesting(within 30 days of initial monitoring event). Failure to submit suitable test results will constitute
noncompliance with monitoring requirements.
7Q10 175 cfs
Permitted Flow -.►Z*GD R mmended by:
IWC o.77 % �1
Basin&Sub-basin AOcZ
Receiving Stream wc-A i iml
County cW4 I. Date 5 5 I s
W Daphnid 48 Version 10191

Page 1
Note for Jackie Nowell
From: Jackie Nowell
Data: Wed,May 24, 1995 9:33 AM
Subject: CP&L-ASHEVII-LE PLANT-001
To: Dave Goodrich
Cc: Carla Sanderson
Per your comments on the subject factsheet concerting the recommendations for As, Se,Fe,
and Cu monitoring. IAU's current toxics SOP for industries is to use the toxics analysis
spreadsheet(if 12 months of data is available,)to determine whether parameters should be
limited or monitored. If the predicted value is higher than the allowable,then the parameter is
limited If the predicted value is within one-tenth of the allowable,then the parameter is
monitored. Using this guidance,the predicted values for As and Fe were< 1/10 of the
allowable concentrations,therefore the monitoring requirements were dropped With the
dilution in the French Broad River,the allowable concentrations were high. The same
analysis determined to continue monitoring for copper and selenium
If you feel more comfortable w/continued monitoring for all the parameters because this is a
power plant,let us know. However,be aware that with our current procedure,other
facilities that have parameters of concern are not required to monitor given the outcome of a
tox analysis(usually where there is high dilution.) Per Carla,if we maintain the monitoring
for CP&L and set a precedent, a"common sense"protocol for other industrial discharges
should probably to be set up.
Please contact me,if additional comments.

D�fU 3U 2
06 00 z 1 00�
ti1gt-
- TSt 30 •�j/e /0 v A�/�
6-9 fU
/S /t Zo /L SOT
7w-1cT�� f�'�iv LC Sy 77A we rX.,
zod
_ Z/Y y aC-

Ate- tiCzr
91
f

3
76/
f�,[Jrt�► Irt �Ilvnq h4^
��'lv, �y%J�✓( G /S/✓CL��( V7,P...,,_

` TOXICANT ANALYSIS
Facility Name CP&L-ASHEVILLE
NPDES# NC0000396 '
Ow MGD 1.91
7Q1Os cfs 375••
1WC(9/.) 0.781
_.._.._.._....._.._..-..-..-..-------------
Rec'ving Stream FRENCH BROAD RIVER
Stream Class C
FINAL RESULTS
COPPER 1 yp A 11', ,4/Z
Max. Pred Cw 138'u A ' �
Allowable Cw 898.3':ugA /
IRON ;
Max. Prod Cw 4800':ugA
Allowable Cw 128334.5 ugA
ARSENIC
Max. Pred Cw 253':ugA
Allowable Cw 6416.7j ugA A
SELENIUM
Max. Pred Cw 126.1 ugA
Allowable Cw 641.7i:ugA
Max. Pred Cw 0?ugA
Allowable Cw #VALUE! 1 ugA
Max. Prod Cw 0 u A
Allowable Cw #VALUE! ugA
5/5/95 PAGE 1

VOL-
73
OL-
73 100
Z� go 36
8'q,?o h to

WHOLE EFFLUENT TOXICITY TESTING 01SELF-MONITORING SUMMARY] Sun,Apr 23.1995
I;A('11 I I Y YVAR- IAN I.7 1 MAR A I'l? MAY PIN III1, AM', svp (X-f* NOV
ONTAINFR CORPORATION OF AMERICA PERMCHK IAMA1% 91
NC0005061J001 Bcgin:5/1/94 Frequency:Q P/F, A JAN APR JUL OCT NonComp:SINGLE 92
County:C1.F"VR.AND Region:MRO Subbimin:DRI XX 93
111::0.010 %'1-1.1 94 PASS
7QI0:0.12 IW('(%):11.0 Ordr, 95 Pass tATF FAIT_ PASS FAIL FAIT. FAIL PASS
CON11-N I N1.A MSD PERM CI IR LIM 11% Y 01 PASS ... --- PASS PASS ... ...
WMI-1011AXII It,% y 1)I./F A )AN APR 1111.1 ICI N....I SIM 11.1 U.- IIA!.!l PASS
... VANN' ... PASS ... ...
C.Unly:111,11, RcgiIm:WAk0 Subbahin:1,114107 93 PASS ... --- PASS PASS ... ... PASS
I'll:2.Xi S1-1.1 114 1 All PASS PASS --- --- PASS ... ...
7()10 16 w 1WCVX.)ll 01, 11.188 PASS ---
COOL11WEE WWII'P PERM CIIR LIM:2.196 Y 01 PASS PASS PASS ... ...
NCO024972/001 Begin:9/1194 Fmquency:Q P/r A JUL OCT JAN APR NonComp:SINGIJ_- 92 W - PASS PASS - FAIL PASS
County:DAVIE Region:WSRO Subbasin:YAD06 93 PASS - LATE PASS PASS - PASS -
[IF:1.5 Special 94 PASS - PASS - PASS -
7QIO-.106 rWC(%):2.1 Order 95 Pass - PASS -
COR REC,DLFr 01;(CALEDONIA) PERM:241IR P/F-AC LIM 90%M- ID 91 - - - PASSI -
NCO0276261001 Begin:10/1/92 Fr II-cy:Q A JAN APR JUL OCT NonComp:SINGLE 92 - - - NR - NR - - >1001 -
CountyAIAL1FAX Region:RRO Subbasin:ROA09 93 PASSI - - PASSE PASSI - - PASSI -
PF:0.80 Special 94 PASSI - PASSf PASSI - -
7Q10:0.075 FWC(%):94.30 Order. 95 P8391 - PASSI
CORPLEC,DEFFOF(MCCAIN IIOSPIIAL-005_PERM CIIR I.IM:67% 91 <10 NR LATE? >51 <10 - - 7.07
NCO035904/001 Begin:12/1/94 rmptency:Q P/r A JAN APR JILL OCT N.nComp:S1NG.IX 92 7.07 - .51.0 - 24.5 - 14.14
County:11OKE Region:FRO Subbasin:LUM51 93 14.14 24.49 PASS FAIL FAIL.FAIL FAIL FAIL FAIL PASS PASS PASS
I'll:0.2(X) slwi.1 94 FAII_PASS FAILYASS FAIL,FAIL PASS PASS PASS FAIL.FAIL PASS PASS FAIL
7Q10:0.15 IW('('%,)67.4 4 hd­ 01,'V-". PASS FAIL
CP&L-AS1 IEVILLE ASI f POND/001 PERM AC LIM:77%(GRAD) 91 >99' 80.2' ... >99' >99,
NCOOM396/001 Begin: /1/91 Frequency:Q A JAN APR JUL OC7 NonComp: 92 83.28' 67,37* >99* >99* - >99'
Coumy:DUNC0MBR Region:ARO Subbitsin:rRB02 93 >99*,>99.0* 17.32' Ni H 95.6' - >99'
PF:1.9 Special 94 >ow --- --- 06.87' >99*
7QI(k 375.0 FWC(%):0.77 Order: 95 79.36' �90*
CP&I..CAPl;MlAR SA;JW7 MiRm CI IR I.IM:90% 91 - PASS
NC0003433/007 Begin:9/1/91 Frexpacricy:Q PA: A 11:11 MAY AUG NOV NonComp: 92 PASS - FAIL PASS PASS PASS PASS PASS -
Couniy:CIIA*n[AM Region:RRO Suhhwin:CPI`07 93 >09.0LPASS- PASS - PASS - PASS -
PF:1803 special 94 ... PASS PASS - PASS PASS _.7Q10:0-0 IWC(%):100.0 Order: 95 BI
CP&I.-L[-.IVWI ASI IE POND Pr.RM!4811R I.C50AC LIM 47%DAPI[NID(GRAD) 91 NONE' - H NONE' NONE' NONE'
N('00014171)01 Begin:1/11)5 F-1......y:Q A MAR AIN SMID17C NonC.n,p:SIN(;I.I: 92 It H >90* >99* >99* ... >99'
County:WAYNE Region:WARD Subbasin:NIA112 03 >99' >90* >99,
PF:VAR sff,i.1 94 --- --- >99' >99* >99'
7QI0.2610 IWQ%):0A7 0.1c, 95 >99' H
CII&I.-I.N.J002 PFRM:24 IIR LC50 AC MONI'FEVIS F[111)(GRAD)C(X)LIN 91
NCDD03417W2 Bcgm 1/1/95 Im1wricy:4 OWIVA NonComp: 02 --- ... --- ... ...
County:WAYNE Region:WARD Subhmm:NIA105 93
PF:VAR Npr­1 94 ... >09'
7QIO:263.0 IWC(%):NA Order 95 -
CP&L-ROXBORO/003 PERM:241IR P/r AC LIM 90%FnID 91 -
NC0003425/003 DeVn:6/1194 Frequency:Q A MAR JUN SEP DEC NonComp:SINGLE 92 -
County:PERSON Region:RRO Subbasin:ROA05 93 -
PF:NONE Special 94 - PASSI PASSI
7QI0:NA fWC(%):NA Order: 95 Passf
0 2 consecutive failures=significant noncomphaam Y Pre 1991 Data Available
LEGEND:
PERM=Permit Requirement Ll-,7=Administrative Lviier-Target Frequency=Monitoring frequency:Q-Quarterly;M-Monthly;BM-Bimonthly;SA-Semiannually:A-Annually;OWD-Only when discharging:D-Discontinued monitoring requirement;IS-Conducting independent study
13citin=Fast month reouired 7QI0=Receiving stream low flow criterion(cls) A=t
quarterly monitoring increases to monthly upon single failureMonths that testing must occur-ex.JAN.APR,JUL,CKT NonComp=Current Compliance Requirement
PF=PemuItcd flow(MGD) rWC%=Ins1rcamwwIcconccnIta1ion P/r=Pass/Fail chronic test AC=Acute Cl IR=Chronic
Data Notation:f-Fathead Minnow;*-Ccriodavhnia sp.:my-Mvsid shrimo:ChV-Chronic value:P-Mortality of stated vercentatze at hiphcst concentration;at-Performed by DEM Tox Eval Grouri:bi-Bad lest
Reporting Notation:---=Data not required;NR-Noireported;( )-Beginning of Quarter Facility Activity Status:I-Inactive,N-Newly Issucd(To construct);It-Active but not discharging;t-More data available for month in question SIG=ORC signature needed
14

I J
NPDES WASTE LOAD ALLOCATION X
PERMIT NO.: NC0000396
Modeler Date Rec. #
Sr�,J
PERMITTEE NAME: Carolina Power& Light Co. 2 '-dS 8 z�
Stem FACILITY NAME: Asheville SteElectric Plant Drainage Area(mi ) Jkl� Avg. Streamflow(cfs):
Facility Status: Existing 7Q10(cfs) Winter 7Q10 (cfs) 30Q2 (cfs)
Permit Status: Renewal Toxicity Limits: IWC % Acute/Chronic
Major -4 Minor Instream Monitoring:
Pipe No.: 002 Parameters
Design Capacity: Upstream Location
Domestic (% of Flow): 0 % Downstream Location
Industrial (% of Flow): 100
Effluent ll
Comments: Characteristics �'��' ►� ' �tJ . L� �, ��X.
Cooling Lake Discharge. See attached effluent guideline sheet BODS (mg/1)
NH3-N (mg/1)
RECEIVING STREAM:Lake Julian D.O. (mg/1)
Class: WS-IV TSS (mg/1)
Sub-Basin: 04-03-02 F. Col. (/100 ml)
Reference USGS Quad: F 8 NE (please attach)
County:
Buncombe pH (SU)
Regional Office: Asheville Regional Office �J_C�Q„�.,,(ullt Z0 0
Previous Exp. Date: 9/30/95 Treatment Plant Class: II /
Classification changes within three miles:
� l
�i,:.. fQlr•.� 1Z0
Requested by: Gre Nizich(5 k) Date: 4/13/95
Prepared by- Date: 57Z3 9,"-- Comments:
Reviewed Date: U S
T�`�

April 13, 1995'
CP&L Sutton - NC0000396 -
Outfall 002 (Cooling Lake)
Effluent Guideline Limitations
Monthly Instantaneous
Effluent Characteristics Average(mg/1) Maidmum (mg/1) Comments
Total Residual Chlorine 0.2 BAT
pH is excluded from the 6 to 9 requirement per
effluent guideline for cooling water.
Type of Product Produced 1000 Lbs/Day Produced Effluent Guideline Reference
40 CFR 423.13(b)(1) Steam Electric Power

FACT SHEET FOR WASTELOAD ALLOCATION
Request# 8291
Facility Name: Carolina Power&Light-Asheville Steam Electric Plant-OUTFALL 002
NPDES No.: NC0000396
Type of Waste: Industrial- 100%
Facility Status: Existing
Permit Status: Renewal
Receiving Stream: Lake Julian
Stream Classification: WS-IV
Subbasin: 040302
County: Buncombe Stream Characteristic:
Regional Office: Asheville USGS #
Requestor: Nizich Date:
Date of Request: 4/17/95 Drainage Area(mi2): LAKE
Topo Quad: F8NE Summer 7Q10(cfs): -
Winter 7Q10(cfs): -
Average Flow (cfs): -
30Q2 (cfs):
IWC (%):
Wasteload Allocation Summary
(approach taken,correspondence with region, EPA,etc.)
Power plant requesting renewal of existing NPDES permit for Lake Discharge of once through
cooling water. Instream Assessement recommends renewal of existing limits.
Special Schedule Requirements and additional comments from Reviewers:
Recommended by- Date: 5/5/95
Reviewed by
i
Instream Assessment: _Date:'5//0h_S
RegionalSvisor: Date: -�
Permits&Engineering: Date:
RETURN TO TECHNICAL J U N 0 9 ?995
PRD
MAY 1 61995 ''

0001�.
2
A
TOWSAAE17ALS/CONVENTIONAL PARAMETERS
Type of Toxicity Test: NONE REQUIRED
Existing Limit:
Recommended Limit:
Monitoring Schedule:
Rxicti g T.imitc
Monthly Avg. Daily Max.
Wasteflow(MGD): NO LIIViTT
Total Residual Chlorine(µg/1): 200
Temperature(C): 44.4
Copper(µg/1): monitor
Time of Chlorine Addition: 120
Monthly Average Daily Max. WQ or EL
Wasteflow(MGD): NO LIMIT
Total Residual Chlorine(µg/1): 200
Temperature(C): 44.4
Copper(µg/1): monitor
Time of Chlorine Addition: 120
Limits Changes Due To: Pardmeter(s) Affected
Change in 7Q10 data
Change in stream classification
Relocation of discharge
Change in wasteflow
New pretreatment information
Other(onsite toxicity study,interaction,etc.)
Parameter(s)are water quality limited. For some parameters,the available load capacity of the immediate
receiving water will be consumed This may affect future water quality based effluent limitations for additional
dischargers within this portion of the watershed.
OR
—X— No parameters are water quality limited,but this discharge may affect future allocations.

I
1 ' 3
INSTREAM MONITORING REQUIREMENTS
Upstream Location:
Downstream Location:
Parameters:
Special instream monitoring locations or monitoring frequencies:
MISCELLANEOUS INFORMATION&SPECIAL CONDITIONS
Adequacy of Existing Treatment
Has the facility demonstrated the ability to meet the proposed new limits with existing treatment
facilities? Yes No
If no,which parameters cannot be met?
Would a"phasing in" of the new limits be appropriate?Yes No
If yes,please provide a schedule(and basis for that schedule)with the regional
office recommendations:
If no, why not?
Special Instructions or Conditions
Wasteload sent to EPA? (Major) (Y or N)
(If yes,then attach schematic,toxics spreadsheet,copy of model,or,if not modeled, then old
assumptions that were made,and description of how it fits into basinwide plan)
Additional Information attached? (Y or N) If yes,explain with attachments.

NPDES WASTE LOAD ALLOCATION
Modeler Date Rec. #
PERMIT NO.: NC0000396
♦` `
PERMITTEE NAME: _Carolina Power&Light Co. 2
FACILITY NAME: Asheville Steam Electric Plant Drainage Area(mi ) SS Avg. Streamflow (cfs): lG 80
Facility Status: Existing 7Q10(cfs) 375 Winter 7Q10 (cfs) 30Q2 (cfs)
Permit Status: Renewal Toxicity Limits: IWC % Acute/Chronic
Major _q Minor Instream Monitoring:
Pipe No.: 004 Parameters
Design Capacity: Upstream Location
Domestic (% of Flow): 0 % Downstream Location
Industrial (% of Flow): 100
Effluent
Comments: Characteristics ���' l i1
Chemical Metal Cleaning Wastes- discharge is to ash pond. See BODS (m )
attached effluent guideline sheet. Intermittent discharge- every 2- yrs NH -N (mg/1)
(80.000 gl2d) 3
_
RECEIVING STREAM:French Broad River D.O. (mg/1)
Class: WS-IV TSS (mg/1) _
Sub-Basin: 04-03-02 F. Col. (/100 ml)
Reference USGS Quad: F 8 NE (please attach)
County: Buncombe pH (SU)
Regional Office: Asheville Regional Office f.U I.o SPT-+BAT
Previous Exp. Date: 9/30/95 Treatment Plant Class: n o f Pr.- R#
Classification changes within three miles:
Requested by: 1 Greg Nizich�s� Date: 4/13/95
Prepared by: ��• �+ Date: 23 Comments:
Reviewed by; Date: I / IS
�O S - -11
' 31 �75_ PLU
wc_�c t_

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April 13, 1995
CP&L Sutton - NC0000396 -
Outfall 004 (Metal Cleaning Wastes)
Effluent Guideline Limitations
Monthly Daily
Effluent Characteristics Average (mg/1) Maximum (mg/1) Comments
TSS* 30 100 BPT
Oil and Grease* 15 20 BPT
copper, total 1.0 1.0 BPT& BAT
iron, total 1.0 1.0 BPT& BAT
H 6 to 9 BPT
* Since this outfall is to the ash pond (001),and since TSS and O&G are limited at that point, limits and/or monitoring is not applied at this outfall
This is an intermittent discharge (80,000 gallons every 2-3 yrs.).
Type of Product Produced 1000 Lbs/Day Produced Effluent Guideline Reference
40 CFR 423.12(b)(5) Steam Electric Power

FACT SHEET FOR WASTELOAD ALLOCATION
Request# 8292
Facility Name: Carolina Power&Light-Asheville Steam Electric Plant-OUTFALL 004
NPDES No.: NC0000396
Type of Waste: Industrial- 100%
Facility Status: Existing
Permit Status: Renewal
Receiving Stream: French Broad River
Stream Classification: WS-TV
Subbasin: 040302
County: Buncombe Stream Characteristic:
Regional Office: Asheville USGS #
Requestor: Nizich Date:
Date of Request: 4/17/95 Drainage Area(mi2): 655
Topo Quad: F8NE Summer 7Q10(cfs): 375
Winter 7Q10(cfs):
Average Flow (cfs): 1680
30Q2(cfs):
IWC (%):
Wasteload Allocation Summary
(approach taken,correspondence with region,EPA,etc.)
Power plant requesting renewal of existing NPDES permit for discharge of 80,000 gallons of
chemical metal cleaning waste(citric acid wash)once every 2-5 years.No discharge from this
outfall in 3 years. Instream Assessement recommends renewal of existing limits.
Special Schedule Requirements and additional comments from Reviewers:
Recommended by: 4. Date: 5/5/95
Reviewed by f
Instream Assessmen • 7!�k0Date:���
Regional Sr: - Date: 7
Permits& gineering: Date: q�
iTDMRT RY_ JUN 0 9 '995
RETURN TO TECHNICAL S+—
jj
,�, MAY 161995

2
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TOWS/METALS/CONVENTIONAL PARAMETERS
Type of Toxicity Test: NONE REQUIRED
Existing Limit:
Recommended Limit:
Monitoring Schedule:
Existing Limits
Monthly Avg. Daily Max.
Wasteflow(MGD): NO IA IIT
Total Copper(mg/1): 1.0 1.0
Total Iron(mg/1): 1.0 1.0
pH(SU): 6-9
Recommended LkaiLi
Monthly Average Daily Max. WQ or EL
Wasteflow(MGD): NO LIMIT
Total Copper(mg/1): 1.0 1.0 BPT&BAT
Total Iron(mg/1): 1.0 1.0 BPT&BAT
pH(SU): 6-9
Limits Changes Due To: ftameter(s) Affected
Change in 7Q10 data
Change in stream classification
Relocation of discharge
Change in wasteflow
New pretmatment information
Other(onsite toxicity study,interaction,etc.)
Parameter(s)are water quality limited. For some parameters,the available load capacity of the immediate
receiving water will be consumed This may affect future water quality based effluent limitations for additional
dischargers within this portion of the watershed.
OR
X No parameters are water quality limited,but this discharge may affect future allocations.

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V
INSTREAM MONITORING REQUIREMENTS
Upstream Location:
Downstream Location:
Parameters:
Special instream monitoring locations or monitoring frequencies:
MISCELLANEOUS INFORMATION&SPECIAL CONDITIONS
Adcguacy of Existing Treatment
Has the facility demonstrated the ability to meet the proposed new limits with existing treatment
facilities? Yes No
If no,which parameters cannot be met?
Would a"phasing in" of the new limits be appropriate?Yes No
If yes,please provide a schedule(and basis for that schedule)with the regional
office recommendations:
If no, why not?
Special Instructions or Conditions
Wasteload sent to EPA? (Major) (Y or N)
(If yes,then attach schematic,toxics spreadsheet,copy of model,or,if not modeled,then old
assumptions that were made,and description of how it fits into basinwide plan)
Additional Information attached? (Y or N) If yes,explain with attachments.