NC0000396_Waste Load Allocation_19950417

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PERMIT NO.: NC0000396 Modeler Date Rec. # .
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PERMITTEE NAME: Carolina Power&Light Co. 2
FACILITY NAME:
Asheville Steam Electric Plant Drainage Area(mi ) C 5-5" Avg. Streamflow (cfs): /60.0
Facility Status: Existing 7Q10(cfs) 3 75 Winter 7Q10(cfs) 30Q2 (cfs)
Permit Status: Renewal Toxicity Limits: IWC d-77 % (Act—Chronic
Major Minor Instream Monitoring:
Pipe No.: 001 Parameters
Design Capacity: Upstream Location
Domestic (% of Flow): 0 % Downstream Location
Industrial (% of Flow): 100 %
Effluent � :
Comments: Characteristics 1 1 •,-•(� ( c i)l /4ly-x.
Ash Pond Discharge. See attached effluent guideline sheet BODS (mg/1)
NH3-N (mg/1)
D.O. (mg/1)
RECEIVING STREAM:French Broad River
Class: WS-IV TSS (mg/I) 30 [o0
Sub-Basin: 04-03-02 F. Col. (/100 ml)
Reference USGS Quad: F 8 NE (please attach)
County: Buncombe pH (SU) - q
Regional Office: Asheville Regional Office 0'( . Gyf,,,10(MJai 15 20
Previous Exp. Date: 9/30/95 Treatment Plant Class: II
Classification changes within three miles: ilr-
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Requested by: zi Greg Nizicht'S l'jDate: 4/13/95
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Prepared by: < /9Date: so 9 S Comments:
Reviewed b i!Z, = 'A ,, —. � / " D.��� `= �`'II' I

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State of North Carolina D
. Department of Environment,
Health and Natural Resources 4
Division of Environmental Management 14 jr
James B. Hunt, Jr., Governor Aiiimemougalt
Jonathan B. Howes, Secretary p E H N R
A. Preston Howard, Jr., P.E., Director
August 28, 1995
Dr. George Oliver
Carolina Power& Light Co.
P.O. Box 1551
Raleigh,North Carolina 27602
Subject: Permit Issuance
NPDES Permit#NC0000396
CP&L- Asheville Plant
Buncombe County
Dear. Dr. Oliver:
In accordance with your application for discharge permit received on April 3, 1995, we are
forwarding herewith the subject State- NPDES permit. This permit is issued pursuant to the
requirements of North Carolina General Statute 143-215.1 and the Memorandum of Agreement
between North Carolina and the US Environmental Protection Agency dated December 6, 1983.
In response to comments regarding the draft permit, the following modifications/comments are
offered:
•Outfall 001 -The erroneous reference in the heading stating that discharge is to the cooling
pond has been removed.
• Outfall 002- The temperature limit designation has been corrected to a monthly average
instead of a daily maximum. The sample type has been corrected from grab to recorder also.
If any parts,measurement frequencies or sampling requirements contained in this permit are
unacceptable to you, you have the right to an adjudicative hearing upon written•request within thirty
(30)days following receipt of this letter.This request must be in the form of a written petition,
conforming to Chapter 150B of the North Carolina General Statutes, and filed with the Office of
Administrative Hearings, Post Office Drawer 27447, Raleigh, North Carolina 27611 -7447.
Unless such demand is made,this decision shall be final and binding.
Please take notice this permit is not transferable. Part H, E.4. addresses the requirements to be
followed in case of change in ownership or control of this discharge.
This permit does not affect the legal requirements to obtain other permits which may be required by
the Division of Environmental Management or permits required by the Division of Land Resources,
Coastal Area Management Act or any other Federal or Local governmental permit that may be
required.
P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer 50%recycled/10%post-consumer paper

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If you have any questions concerning this permit, please contact Mr. Greg Nizich at telephone
number 919/733-5083, extension 541.
Sincerely, rE�d ty
Original 516,
David A. Goodrich
A. Preston Howard, Jr., P.E.
cc: Central files
Asheville Regional Office,Water Quality Section
Facilities Assessment Unit
Operator Training &Certification
A uatic Surve &Toxicology Unit

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Permit No. NC0000396
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT, HEALTH, AND NATURAL RESOURCES
DIVISION OF ENVIRONMENTAL MANAGEMENT
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provision 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 and Light Company
is hereby authorized to discharge wastewater from a facility located at
Asheville Steam Electric Plant
Southwest of Skyland
Buncombe County
to receiving waters designated as the French Broad River and as Lake Julian in the French Broad
River Basin
in accordance with effluent limitations, monitoring requirements, and other conditions set forth in
Parts I, II, and III hereof.
This permit shall become effective October 1, 1995
This permit and authorization to discharge shall expire at midnight on September 30, 2000
Signed this day August 28, 1995
Original Signed BY
David 0. Goodrich
A. Preston Howard, Jr., P.E., Director
Division of Environmental Management
By Authority of the Environmental Management Commission

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Permit No. NC0000396
SUPPLEMENT TO PERMIT COVER SHEET
Carolina Power and Light Company
is hereby authorized to:
1. Continue to operate an ash pond treatment system (001) to treat ash transport water,
low volume wastewater, stormwater runoff, and coal pile runoff; a once through non-
contact cooling water system (002); and a chemical metal cleaning treatment system
(004), located at the Asheville Steam Electric Plant, southwest of Skyland in
Buncombe County(See Part III of this Permit), and L e- l1,
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2. Discharge from said treatment wor •. the location specified on the,,, ed map
into the French Broad River(001 an• 004 which ': •• -. sifted Class " /' waters
and Lake Julian (002) which is classified Class " ' in the French : •ad River
Basin.

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Plant Site Map
Carolina Power & Light Company 1 •
Asheville Steam Electric Plant

w A. (1). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS FINAL Permit No. NC0000396 • -
During the period beginning on the effective date of the permit and lasting expiration, the Permittee is authorized to discharge from
outfall(s) serial number 001 (Ash Pond). Such discharges shall be limited and monitored by the permittee as specified below: •
Effluent Characteristics Discharge Limitations Monitoring Requirements
Lbs/day Units (Specify) Measurement Sample. *Sample
Mon. Avg. Daily Max. Mon. Avg. Daily Max. Frequency Type Location
Flow Weekly Instantaneous E
Total Suspended Solids 30.0 mg/I 100.0 mg/I 2/Month Grab E
Oil and Grease 15.0 mg/I 20.0 mg/I 2/Month Grab E
Copper Monthly Grab E
Iron Monthly Grab E
Arsenic Monthly Grab E
Selenium Monthly Grab E
Total Nitrogen (NO2+NO3+TKN) Quarterly Grab E
Total Phosphorus Quarterly Grab E
Acute Toxicity" Quarterly Grab E
* Sample locations: E-Effluent.
** (Daphnid48hrC50 @77%;January, April, and October; See Part III,Condition E. $ `- -
Acute Toxicity Julytcs,The pH shall be monitore 12/month . the effluent by grab sample. r;r.d —OW //Al/'.
There shall be no discharge of floating solids or visible foam in other than trace amounts. cluj fttitli)lk if
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A. (2). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS FINAL Permit No. NC0000396 .
During the period beginning on the effective date of the permit and lasting expiration, the Permittee is authorized to discharge from
outfall(s) serial number 002 (Once Through Cooling Water). Such discharges shall be limited and monitored by the permittee as specified
below:
Effluent Characteristics Discharge Limitations Monitoring Requirements
Lbs/day Units JSpecify) Measurement Sample *Sample
Daily. Avq.Daily Max. Mon. Avg. Instantaneous Max. Frequency Type Location
Flo Daily Pump Logs E
Total Resi ua Chlorine"' ci.wL
'1° Com, oul.c, 200.0 µg/I" Daily*" Multiple Grabs E
Time of Chlorine Addition 120.0 ar Daily Logs
(min/day/unit)
Temperature D AA 44.4 °C Daily Recorder E
Copper — tri4 rei'/� - Monthly Grab E
The mixing zone has been defined as all of Lake Julian. ('e4I-64.I w/ 66—
✓* Sample locations: E- Effluent.
V** Instantaneous Maximum at any time- sampling is required only if chlorination is performed.
Total Residual Chlorine may not be discharged from any single generating unit for more that two hours per day, unless the permittee can
demonstrate to the Division of Environmental Management that discharge for more than two hours is required for macro invertebrate control.
Simultaneous multi-unit chlorination is permitted.
** In the event that chlorine is controlled by automatic equipment that is programmed to dose over multiple intervals per day,sampling is required
only during one representative interval per day.
There shall be no discharge of floating solids or visible foam in other than trace amounts.
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A. (3r). UENT LIMITATIONS AND MONITORING REQUIREMENTS FINAL Permit No. NC0000396 . _A .
A
, `During the period beginning on the effective date of the permit and lasting expiration,the Permittee is authorized to discharge from
outfall(s) serial number 004 (Chemical Metal Cleaning Wastes). Such discharges shall be limited and monitored by the permittee as specified
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below:
Effluent Characteristics Discharge Limitations Monitoring Requirements
Lbs/day Units (Specify) Measurement Sample *Sample
Mon. Avg. Daily Max. Mon. Avg. Daily Max. Frequency Type Location
Flow Daily Instantaneous E
Copper, Total 1.0 mg/I 1.0 mg/I Daily Grab E
Iron, Total 1.0 mg/I 1.0 mg/I Daily Grab E
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* Sample locations: E- Effluent, prior to mixing with any other waste stream.
The chemical metal cleaning waste shall be discharged to the ash pond after pretreatment.
The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units and shall be monitored daily at the effluent by grab sample.
There shall be no discharge of floating solids or visible foam in other than trace amounts.
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•_ ' Part RI Pe .0' .. !•1,1396
E. ACUTE TOXICITY PERMIT LIMIT(QRTRLY) UNA41CtThe 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 Daphnia pulex or
Ceriodaphnia 48 hour static test, using effluent collected as a grab sample. 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 after thirty days from
the effective date of this permit during the months of January, April,July and October.
The parameter code for this test if using Daphnia pulex is TAA3D. The parameter code for this test
if using Ceriodaphnia 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.
F. Biocide Condition MO j-{ 013 s% - d
The permittee sh. obtain authorization from the Division of Environmental Management prior to
utilizing any •'.cide in the cooling water. The Pe ••' -e shall notify the Director in writing not
later than .'. ety(90) days prior to instituting us any additional biocide used in treatment system
which ay be toxic to aquatic life oth an those previously reported to the Division of
Env' .nmental Management. Such • : ification shall include completion of Biocide Worksheet
F. 101 and a map locating • discharge point and re 'ving stream. Concentrations of
c romium, copper, or zinc ads a to biocides shall not exc applicable water quality standards or
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action levels in the recei g stream, as determined b alculations from the Biocide Worksheet
Form 101 with Supplemental Metals Analysis works t.

• "G. Continued intake screen backwash discharge is permitted without limitations or monitoring
requirements. However,the discharge of floating oil and grease shall be prohibited.
JA H. The Permittee shall report all visible discharges of floating materials, such as an oil sheen to the
r, v„..Director when submitting DMR's.
Sir
I. The Permittee shall continue to implement a Best Managemen Practices (BMP) Plan to control
the discharge of oils and the hazardous and toxic substances listed in 40 CFR, Part 117 and Tables srpP
II and III of Appendix D to 40 CFR, Part 122. The Plan shall be maintained at the-plant site and
shall be available for inspection by EPA and DEM personnel.
OA J. Discharge of any product registered under the Federal Insecticide, Fungicide, and Rodenticide
,//;% - Act to any waste stream which may ultimately be released to lakes,rivers, streams or other waters
5a1.�'h of the United States is prohibited unless specifically authorized elsewhere in this permit Discharge
of chlorine from the use of chlorine gas, sodium hypochlorite, or other similar chlorination
compounds for disinfection in plant potable and service water systems and in sewage treatment is
authorized.
K. Should the Permittee wish a continuation of its 316(a) variance beyond the term of this permit,
reapplication for such continuation shall be submitted in accordance with 40 CFR Part 125,
Subpart H and Section 122.21(1)(6) not later than 180 days prior to permit expiration.
Reapplication shall include data and information to support continuation of the variance.
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