NCG500102_complete file-historical_20120803

WDEW
North Carolina Department of Environment and Natural Resources
Beverly Eaves Perdue
Governor
Mr. Allen Stowe, Jr.
Duke Energy Corporation
526 South Church Street / EC 13K
Charlotte, NC 28202
Dear Permittee:
Division of Water Quality
Charles Wakild, P.E.
Director
August 3, 2012
Dee Freeman
Secretary
Subject: Renewal of coverage / General Permit NCG500000
Bridgewater Hydroelectric Station
Certificate of Coverage NCG500102
Burke County
The Division is renewing Certificate of Coverage (CoC) NCG500102 to discharge under NPDES
General Permit NCG500000. This CoC is issued pursuant to the requirements of North Carolina General
Statue 143-215.1 and the Memorandum of Agreement between North Carolina and the US Environmental
Protection agency dated October 15, 2007 [or as subsequently amended].
If any parts, measurement frequencies or sampling requirements contained in this General Permit
are unacceptable to you, you have the right to request an individual permit by submitting an individual
permit application. Unless such demand is made, the certificate of coverage shall be final and binding.
Please take notice that this Certificate of Coverage is not transferable except after notice to the
Division. The Division may require modification or revocation and reissuance of the certificate of coverage.
This permit does not affect the legal requirements to obtain other permits which may be required by
the Division of Water Quality 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.
If you have any questions concerning the requirements of the General Permit, please contact John
Hennessy [919 807-6377 or [e-mail]].
Sincerely,
Original signed by John Hennessy
for Charles Wakild, P.E.
cc: Asheville Regional Office / Surface Water Protection
NPDES file
1617 Mail Service Center, Raleigh, North Carolina 27699-1617
512 North Salisbury Street, Raleigh, North Carolina 27604
Phone: [phone] / FAX [phone] Internet: www.ncwaterquality.org
An Equal Opportunity/Affirmative Action Employer-50% Recycled/10% Post Consumer Paper
Nne
orthCarolina
NaAmilry

A. -
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
GENERAL PERMIT NCG500000
CERTIFICATE OF COVERAGE NCG500102
TO DISCHARGE NON -CONTACT COOLING WATER, COOLING TOWER AND
BOILER BLOWDOWN, CONDENSATE AND SIMILAR WASTEWATERS 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,
Duke Energy Corporation
is hereby authorized to discharge Hydroelectric Dam Sumps & Non -contact Cooling Water
from a facility located at
Bridgewater Hydroelectric Station
5790 Power House Road
Morganton
Burke County
to receiving waters designated as the Catawba River in subbasin 03-08-30 of the Catawba
River Basin in accordance with the effluent limitations, monitoring requirements, and
other conditions set forth in Parts I, II, III and IV hereof.
This Certificate of Coverage shall become effective August 3, 2012.
This Certificate of Coverage shall remain in effect for the duration of the General Permit.
Signed this day August 3, 2012
Original signed by John Hennessy
for Charles Wakild, Director
Division of Water Quality
By Authority of the Environmental Management Commission

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NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Charles Wakild, P.E.
Governor Director
March 1, 2012
Mr. Allen Stowe
Duke Energy
P.O. Box 1006 / EC 13K
Charlotte, N.C. 28201-1006
Dee Freeman
Secretary
Subject: NPDES fee payment return
NCG500000 renewal applications
Dear Mr. Stowe:
On January 27, 2012, the Division received your renewal applications for sixteen hydroelectric
dams covered under General Permit NCG500000. We are returning the attached check
(#1000074382) for $1,600.00 received with the applications. Renewal of existing General Permit
Certificates of Coverage does not require an application fee:
If you have any questions about the NPDES permit process, contact me at the address or
telephone number listed below.
Sincerely,
VAgq
Charles H. Weaver, Jr.
NPDES Unit
cc: NPDES Files
1617 Mail Service Center, Raleigh, North Carolina 27699-1617
512 North Salisbury Street, Raleigh, North Carolina 27604
Phone: [phone] / FAX [phone] / Internet: www.ncwaterquality.org
An Equal Opportunity/Affirmative Action Employer — 50% Recycled/10% Post Consumer Paper
No�rthCarolina
Naturally

PDuke CORPORATE EHS SERVICES
Energy® Duke Energy
526 Church St.
January 26, 2012 CharlottehNC 28202
Mailing Address:
Mr. Charles Weaver EC13K/PO Box 1006
State of North Carolina Charlotte, NC 28201-1006
Department of Environment and Natural Resources
Division of Water Quality
NPDES Permits Unit
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
Subject: Duke Energy Carolinas, LLC — NPDES Permit Application
Renewal of NPDES General Permit - #NCG500000
Bear Creek Hydroelectric Plant — NCG500124
Bridgewater Hydroelctric Plant — NCG500102
Bryson Hydroelectric Plant — NCG500129
Cedar Cliff Hydroelctric Plant — NCG500125
Cowans Ford Hydroelectric Plant — NCG500139
Franklin Hydroelectric Plant — NCG500657
Lookout Shoals Hydroelectric Plant — NCG500120
Mission Hydroelectric Plant — NCG500128
Mountain Island Hydroelectric Plant— NCG500131
Nantahala Hydroelectric Plant— NCG500136
Oxford Hydroelectric Plant — NCG500119
—
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Rhodhiss Hydroelectric Plant— NCG500108
Tennessee Creek Hydroelectric Plant — NCG500123
BAN L
27
Thorpe Hydroelectric Plant— NCG500127
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Tuckasegee Hydroelectric Plant — NCG500126
DENR
/
Tuxedo Hydroelectric Plant — NCG500110
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Dear Mr. Weaver:
Duke Energy Carolinas, LLC requests the subject general permit be renewed and reissued. The above
referenced permit expires July 31, 2012. As mandated by North Carolina Administrative Code 15A NCAC
2H.0105 (a), this permit application for renewal is being submitted at least 180 days prior to expiration of
the current permit.
Please find enclosed in triplicate, the Notice of Renewal Intent for each of the hydroelectric facilities
named above.
Duke Energy Carolinas, LLC requests notification that this application is complete.
Thank you in advance for your assistance on this matter. Should you have questions regarding this
application, please contact me at [phone].
Sincerely,
Allen Stowe
Water Management
Attachments
cc w/: Mr. Keith Haynes — NC DEN Asheville R.O.
www.duke-energy.com

Duke
Energy®
January 26, 2012
Mr. Charles Weaver
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
NPDES Permits Unit
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
Subject: Duke Energy Carolinas, LLC — NPDES Permit Application
Renewal of NPDES General Permit - #NCG500000
Bear Creek Hydroelectric Plant — NCG500124
Bridgewater Hydroelctric Plant — NCG500102
Bryson Hydroelectric Plant — NCG500129
Cedar Cliff Hydroelctric Plant — NCG500125
Cowans Ford Hydroelectric Plant — NCG500139
Franklin Hydroelectric Plant — NCG500657
Lookout Shoals Hydroelectric Plant — NCG500120
Mission Hydroelectric Plant — NCG500128
Mountain Island Hydroelectric Plant — NCG500131
Nantahala Hydroelectric Plant — NCG500136
Oxford Hydroelectric Plant — NCG500119
Rhodhiss Hydroelectric Plant — NCG500108
Tennessee Creek Hydroelectric Plant — NCG500123 1
Thorpe Hydroelectric Plant — NCG500127 F
Tuckasegee Hydroelectric Plant — NCG500126
Tuxedo Hydroelectric Plant — NCG500110
Dear Mr. Weaver:
CORPORATE ENS SERVICES
Duke Energy
526 South Church St.
Charlotte, NC 28202
Mailing Address:
EC13K / PO Box 1006
Charlotte, NC 28201-1006
r7 i
JAN 2 7 2012
Duke Energy Carolinas, LLC requests the subject general permit be renewed and reissued. The above
referenced permit expires July 31, 2012. As mandated by North Carolina Administrative Code 15A NCAC
2H.0105 (e), this permit application for renewal is being submitted at least 180 days prior to expiration of
the current permit.
Please find enclosed in triplicate, the Notice of Renewal Intent for each of the hydroelectric facilities
named above.
Duke Energy Carolinas, LLC requests notification that this application is complete.
Thank you in advance for your assistance on this matter. Should you have questions regarding this
application, please contact me at [phone].
Sincerely,
a& '---
Allen Stowe
Water Management
Attachments
cc w/: Mr. Keith Haynes — NC DENR Asheville R.O.
mm. duke -energy. cam

Duke
Energy®
January 26, 2012
Mr. Charles Weaver
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
NPDES Permits Unit
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
Subject: Duke Energy Carolinas, LLC — NPDES Permit Application
Renewal of NPDES General Permit - #NCG500000
Bear Creek Hydroelectric Plant — NCG500124
Bridgewater Hydroelctric Plant — NCG500102
Bryson Hydroelectric Plant — NCG500129
Cedar Cliff Hydroelctric Plant — NCG500125
Cowans Ford Hydroelectric Plant — NCG500139
Franklin Hydroelectric Plant — NCG500657
Lookout Shoals Hydroelectric Plant — NCG500120
Mission Hydroelectric Plant — NCG500128
Mountain Island Hydroelectric Plant — NCG500131
Nantahala Hydroelectric Plant — NCG500136
Oxford Hydroelectric Plant — NCG500119
Rhodhiss Hydroelectric Plant — NCG500108
Tennessee Creek Hydroelectric Plant — NCG500123
Thorpe Hydroelectric Plant — NCG500127
Tuckasegee Hydroelectric Plant — NCG500126
Tuxedo Hydroelectric Plant — NCG500110
Dear Mr. Weaver:
CORPORATE EHS SERVICES
Duke Energy
526 South Church St.
Charlotte, NC 28202
Mailing Address:
EC13K / PO Box 1006
Charlotte, NC 28201-1006
Duke Energy Carolinas, LLC requests the subject general permit be renewed and reissued. The above
referenced permit expires July 31, 2012. As mandated by North Carolina Administrative Code 15A NCAC
2H.0105 (e), this permit application for renewal is being submitted at least 180 days prior to expiration of
the current permit. p
Please find enclosed in triplicate, the Notice of Renewal Intent for each of the hydroelectric facilities
named above.
Duke Energy Carolinas, LLC requests notification that this application is complete.
Thank you in advance for your assistance on this matter. Should you have questions regarding this
application, please contact me at [phone]. g g
Sincerely,
(1.'A , ,
Allen Stowe
Water Management
Attachments
cc w/: Mr. Keith Haynes — NC DENR Asheville R.Q.
www. duke -energy, com

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Division of Water Quality / Water Quality Section
National Pollutant Discharge Elimination System
NCG500000
FOR AGENCY USE ONLY
Date Received
Year Month Da
Certificate of Coverage
Check N Amount
Permit Assigned to
NOTICE OF INTENT
National Pollutant Discharge Elimination System application for coverage under General Permit
NCG500000: Non -contact cooling water, boiler blowdown, cooling tower blowdown, condensate, and
similar point source discharges
(Please print or type)
1) Mailing address of owner/operator:
Company Name Duke Energy Carolinas, LLC
Owner Name Allen Stowe - Water Management
Street Address 526 South Church Street, Interoffice - EC13K
City Charlotte
Telephone No. [phone]
" Address to which all permit correspondence will be mailed
2) Location of facility producing discharge:
State N.C. ZIP Code 28202
Fax: [phone]
Facility Name Bridgewater Hydroelectric Station
Facility Contact Mike Lail
Street Address 5790 Power House Road
City Morganton State NC ZIP Code 28655
County Burke
Telephone No. 828 391-6740 Fax: NIA
3) Physical location information:
Please provide a narrative description of how to get to the facility (use street names, state road numbers,
and distance and direction from a roadway intersection). I-40 West of Morganton: Take Exit 94 (Dysartsville), tum right.
Go to NC 70, turn left, go approx 2 miles. Turn right on N Powerhouse Rd, tum right on Powerhouse Rd. Go 0.5 mile to the station.
(A copy of a county map or USGS quad sheet with facility clearly located on the map is required to be submitted with this application)
4) This NPDES permit application applies to which of the following:
❑ New or Proposed
❑ Modification
Please describe the modification:
B Renewal
Please specify existing permit number and original issue date:
5) Does this facility have any other NPDES permits?
B No
❑ Yes
If yes, list the permit numbers for all current NPDES permits for this facility:
6) What is the nature of the business applying for this permit? Electric Generation
Page 1 of 4 04/05

NCG500000 N.O.I.
7) Description of Discharge:
a) Is the discharge directly to the receiving water? B Yes ❑ No
If no, submit a site map with the pathway to the potential receiving waters clearly marked. This
includes tracing the pathway of the storm sewer to the discharge point, if the storm sewer is the only
viable means of discharge.
b) Number of discharge points (ditches, pipes, channels, etc. that convey wastewater from the
property): One -Tailrace
c) What type of wastewater is discharged? Indicate which discharge points, if more than one.
B Non -contact cooling water Discharge point(s) M 001
❑ Boiler Blowdown Discharge point(s) M
❑ Cooling Tower Blowdown Discharge point(s) M
❑ Condensate Discharge point(s) M
❑ Other Discharge point(s) M
(Please describe "Other")
d) Volume of discharge per each discharge point (in GPD):
#1: 166,320 #2: #3: #4
e) Please describe the type of process (i.e., compressor, A/C unit, chiller, boiler, etc.) the wastewater is
being discharged from, per each separate discharge point (if applicable, use separate sheet):
Hydroelectric generator
8) Please check the type of chemical added to the wastewater for treatment, per each separate discharge
point (if applicable, use separate sheet):
❑ Biocides Name:
Manuf.:
❑ Corrosion inhibitors Name:
Manuf.:
❑ Chlorine Name:
Manuf.:
❑ Algaecide Name:
Manuf.:
❑ Other Name:
Manuf.:
8 None
9) If any box in item (8) above, other than none, was checked, a completed Biocide 101 Form and
manufacturers' information on the additive is required to be submitted with the application for the
Division's review.
10) Is there any type of treatment being provided to the wastewater before discharge (i.e., retention ponds,
settling ponds, etc.)? ❑ Yes 8 No
If yes, please include design specifics (i.e., design volume, retention time, surface area, etc.) with
submittal package. Existing treatment facilities should be described in detail. Design criteria and
operational data (including calculations) should be provided to ensure that the facility can comply with the
requirements of the General Permit. The treatment shall be sufficient to meet the limits set by the
general permits.
Note: Construction of any wastewater treatment facilities requires submission of three (3) sets
of plans and specifications along with the application. Design of treatment facilities
must comply with the requirements of 15A NCAC 2H .0138. If construction applies to
this discharge, include the three sets of plans and specifications with this application.
Page 2 of 4 04/05

NCG500000 N.O.I.
11) Discharge Frequency:
a) The discharge is: B Continuous ❑ Intermittent
b)
c)
i) If the discharge is intermittent, describe when the discharge will occur:
ii) If seasonal check the month(s) the discharge occurs: ❑ Jan.
❑ May ❑ Jun. ❑ Jul. ❑ Aug. ❑ Sept. ❑ Oct. ❑ Nov.
How many days per week is there a discharge? Seven
Please check the days discharge occurs:
8 Sat. 8 Sun. 8 Mon. B Tue. 8 Wed. 8 Thu. B Fri.
12) Pollutants:
❑ Seasonal❑
❑ Feb. ❑ Mar. ❑ Apr.
❑ Dec.
Please list any known pollutants that are present in the discharge, per each separate discharge point (if
applicable, use separate sheet):
13) Receiving waters:
a) What is the name of the body or bodies of water (creek, stream, river, lake, etc.) that the facility
wastewater discharges end up in? If the site wastewater discharges to a separate storm sewer
system (4S), name the operator of the 4S (e.g. City of Raleigh). Catawba River
b) Stream Classification: wS-Iv
14) Alternatives to Direct Discharge:
Address the feasibility of implementing each of the following non -discharge alternatives
a) Connection to a Municipal or Regional Sewer Collection System Not Available
b) Subsurface disposal (including nitrification field, infiltration gallery, injection wells, etc.) Too much flow
c) Spray irrigation Not justifiable, no significant thermal gradient or pollutant load
The alternatives to discharge analysis should include boring logs and/or other information indicating that
a subsurface system is neither feasible nor practical as well as written confirmation indicating that
connection to a POTW is not an option. It should also include a present value of costs analysis as
outlined in the Division's "Guidance For the Evaluation of Wastewater Disposal Alternatives':
15) Additional Application Requirements:
For new or proposed discharges, the following information must be included in triplicate with this
application or it will be returned as incomplete.
a) 7.5 minute series USGS topographic map (or a photocopied portion thereof) with discharge location
clearly indicated.
b) Site map, if the discharge is not directly to a stream, the pathway to the receiving stream must be
clearly indicated. This includes tracing the pathway of a storm sewer to its discharge point.
c) If this application is being submitted by a consulting engineer (or engineering firm), include
documentation from the applicant showing that the engineer (Or firm) submitting the application has
been designated an authorized Representative of the applicant.
d) Final plans for the treatment system (if applicable). The plans must be signed and sealed by a North
Carolina registered Professional Engineer and stamped -"Final Design -Not released for construction".
Page 3 of 4 04/05

NCG500000 N.O.I.
e) Final specifications for all major treatment components (if applicable). The specifications must be
signed and sealed by a North Carolina registered Professional Engineer and shall include a narrative
description of the treatment system to be constructed.
I certify that I am familiar with the information contained in this application and that to the best of my
knowledge and belief such information is true, complete, and accurate.
Printed Name of Person Signing: Carol S.Goolsby
s
(Signature of
North Carolina General Statute 143-215.6 b (1) provides that:
/ AA- x0j�
(Date Signed)
Any person who knowingly makes any false statement, representation, or certification in any
application, record, report, plan or other document filed or required to be maintained under Article 21
or regulations of the Environmental Management Commission implementing that Article, or who
falsifies, tampers with or knowingly renders inaccurate any recording or monitoring device or method
required to be operated or maintained under Article 21 or regulations of the Environmental
Management Commission implementing that Article, shall be guilty of a misdemeanor punishable by
a fine not to exceed $25,000, or by imprisonment not to exceed six months, or by both. (18 U.S.C.
Section 1001 provides a punishment by a fine of not more than $25,000 or imprisonment not more
than 5 years, or both, for a similar offense.)
Notice of Intent must be accompanied by a check or money order for $100.00 made payable to:
NCDENR
Mail three (3) copies of the entire package to:
NPDES Permits Unit
Division of Water Quality
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
Final Checklist
This application will be returned as incomplete unless all of the following items have been
included:
B Check for $100 made payable to NCDENR
8 3 copies of county map or USGS quad sheet with location of facility clearly marked on map
8 3 copies of this completed application and all supporting documents
O 3 sets of plans and specifications signed and sealed by a North Carolina P.E.
8 Thorough responses to items 1-7 on this application
8 Alternatives analysis including present value of costs for all alternatives
Note
The submission of this document does not guarantee the issuance of an NPDES permit
Page 4 of 4 04/05

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NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Michael F. Easley, Governor William G. Ross, Jr., Secretary
Coleen H. Sullins, Director
July 23, 2007
Jimmie Allen Stowe, Jr.
Duke Energy Corporation
526 South Church Street / EC 13K
Charlotte, NC 28202
Subject: Renewal of coverage / General Permit NCG500000
Bridgewater Hydroelectric Station
Certificate of Coverage NCG500102
Burke County
Dear Permittee:
In accordance with your renewal application [received on January 31, 20071, the Division is renewing
Certificate of Coverage (CoC) NCG500102 to discharge under NCG500000. This CoC is issued pursuant to the
requirements of North Carolina General Statue 143-215.1 and the Memorandum of Agreement between North
Carolina and the US Environmental Protection agency dated May 9, 1994 [or as subsequently amended].
If any parts, measurement frequencies or sampling requirements contained in this General Permit are
unacceptable to you, you have the right to request an individual permit by submitting an individual permit
application. Unless such demand is made, the certificate of coverage shall be final and binding.
Please take notice that this Certificate of Coverage is not transferable except after notice to the
Division. The Division may require modification or revocation and reissuance of the certificate of coverage.
This permit does not affect the legal requirements to obtain other permits which may be required by
the Division of Water Quality 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.
If you have any questions concerning the requirements of the General Permit, please contact Jim
McKay [919 733-5083, extension 595 or [e-mail]].
Sincerely,
for Coleen H. Sullins
cc: Central Files
Asheville Regional Office / Surface Water Protection
NPDES file
1617 Mail Service Center, Raleigh, North Carolina 27699.1617 One
512 North Salisbury Street, Raleigh, North Carolina 27604 NorthCarolina
Phone: [phone] / FAX [phone] / Internet: www.ncwaterquality.org a ��` 1�N�l//�
An Equal Opportunity/Affirmative Action Employer —50% Recycled/10°k Post Consumer Paper {�/ �/ L

STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
GENERAL PERMIT NCG500000
CERTIFICATE OF COVERAGE NCG500102
TO DISCHARGE NON -CONTACT COOLING WATER, COOLING TOWER AND BOILER
BLOWDOWN, CONDENSATE AND SIMILAR WASTEWATERS UNDER THE
NATIONAL POLLUTANT DISCHARGE ELEVIINATION 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,
Duke Energy Corporation
is hereby authorized to discharge from a facility located at
Bridgewater Hydroelectric Station
5790 Power House Road
Morganton
Burke County
to receiving waters designated as the Catawba River in subbasin 30830 of the Catawba
River Basin in accordance with the effluent limitations, monitoring requirements, and
other conditions set forth in Parts I, II, III and IV hereof.
This certificate of coverage shall become effective August 1, 2007.
This Certificate of Coverage shall remain in effect for the duration of the General Permit.
Signed this day July 23, 2007.
for Coleen H. Sullins, Director
Division of Water Quality
By Authority of the Environmental Management Commission

n
NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Michael F. Easley, Governor
William G. Ross, Jr., Secretary
Alan W. Klimek, P.E., Director
NOTICE OF RENEWAL INTENT
Application for renewal of existing coverage under General Permit NCG500000
Existing Certificate of Coverage (CoC): NCG500102
(Please print or type)
1) Mailing address" of facility owner/operator:
Company Name Duke Energy Carolinas, LLC
Owner Name Allen Stowe, Scientist - Water Management
Street Address 526 South Church Street, EC 13K
City Charlotte StateNC ZIP Code 28202
Telephone Number(704) 382-4309 Fax: L7041 382-9840
Email address 'asLowg@duke-energ�com
" Address to which all permit correspondence should be mailed
2) Location of facility producing discharge:
Facility Name Bridgewater Hydroelectric Station
Facility Contact Sam Powell
Street Address 5790 Power House Road
City Morganton StateNC ZIP Code 28655
County Burke
Telephone Number(828) 584-1451 Fax: NLA
Email address [e-mail]
3) Description of Discharge:
a) Is the discharge directly to the receiving stream? 0 Yes O No
(If no, submit a site map with the pathway to the potential receiving waters clearly marked. This includes tracing the pathway of the
storm sewer to the discharge point, if the storm sewer is the only viable means of discharge.)
b) Number of discharge outfalls (ditches, pipes, channels, etc. that convey wastewater from the
property) : One -Tailrace
c) What type of wastewater is discharged? Indicate which discharge points, if more than one.
® Non -contact cooling water
Outfall(s) #: 001
p Boiler Blowdown Outfall (s) #:
Page 1 of 3

NCG500000 renewal application
O Cooling Tower Blowdown Outfall (s) #:
O Condensate Outfall (s) #:
O Other Outfall (s) #:
(Please describe "Other")
d) Volume of discharge per each discharge point (in GPD):
#001:1728 #002: #003: #004
4) Please check the type of chemical [s] added to the wastewater for treatment, per each separate discharge
point (if applicable, use separate sheet):
O Chlorine ❑ Biocides O Corrosion inhibitors O Algaecide ❑ Other
® None
5) If any box in item (4) above [other than None] was checked, a completed Biocide 101 Form and
manufacturers' information on the additive must be submitted to the following address for approval:
NC DENR / DWQ / Environmental Sciences Section
Aquatic Toxicology Unit
1621 Mail Service Center
Raleigh, NC 27699-1621
6) Is there any type of treatment being provided to the wastewater before discharge (i.e., retention ponds,
settling ponds, etc.)? O Yes ® No
(If yes, please include design specifics (i.e., design volume, retention time, surface area, etc.) with submittal package. Existing
treatment facilities should be described in detail. )
7) Discharge Frequency:
a) The discharge is: ® Continuous ❑Intermittent ❑ Seasonal*
i) If the discharge is intermittent, describe when the discharge will occur:
ii) *Check the month(s) the discharge occurs: O Jan O Feb O Mar. O Apr ❑ May O Jun O Jul ❑
Aug. O Sept. O Oct. O Nov. O Dec.
b) How many days per week is there a discharge? Seven
c) Please check the days discharge occurs: ® Sat. ® Sun. ® Mon. ® Tue. ® Wed. ® Thu. ® Fri.
8) Receiving stream(s]:
a) To what body or bodies of water (creek, stream, river, lake, etc.) does the facility discharge wastewater?
If the site discharges wastewater to a separate storm sewer system (4S), name the operator of the 4S
(e.g. City of Raleigh). Catawba River
b) Stream Classification: WS-IV
Additional Application Requirements:
Page 2 of 3

NCG500000 renewal application
Additional Application Requirements:
The following information must be included in triplicate [original + 2 copies] with this application or
it will be returned as incomplete.
➢ Site map. If the discharge is not directly to a stream, the pathway to the receiving stream
must be clearly indicated. This includes tracing the pathway of a storm sewer to its
discharge point.
➢ Authorization for representatives. If this application will be submitted by a consulting
engineer (or engineering firm), include documentation from the Permittee showing that the
consultant submitting the application has been designated an Authorized Representative of
the applicant.
Certification
I certify that I am familiar with the information contained in this application and that to the best of
my knowledge and belief such information is true, complete, and accurate.
Printed Name of Person Signing: Carol S. Goolsby
Title: General Manager, Hydro Fleet
(Signature of
North Carolina General Statute 143-215.6 b (1) provides that:
1 29 07
(Date Signed)
Any person who knowingly makes any false statement, representation, or certification in any application, record, report, plan or other document
filed or required to be maintained under Article 21 or regulations of the Environmental Management Commission implementing that Article, or who
falsifies, tampers with or knowingly renders inaccurate any recording or monitoring device or method required to be operated or maintained under
Article 21 or regulations of the Environmental Management Commission implementing that Article, shall be guilty of a misdemeanor punishable by
a tine not to exceed $25,000, or by imprisonment not to exceed six months, or by both. (18 U.S.C. Section 1001 provides a punishment by a fine
of not more than $25,000 or imprisonment not more than 5 years, or both, for a similar offense.)
This Notice of Renewal Intent does NOT require a separate fee.
The permitted facility already pays an annual fee for coverage under NCG500000.
Mail the original and two copies of the entire package to:
Mr. Charles H. Weaver
NC DENR / DWQ / NPDES
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
Page 3 of 3

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State of North Carolina
Department of Environment
and Natural Resources
Division of Water Quality
Michael F. Easley, Governor
William G. Ross Jr., Secretary
Alan W. Klimek, P.E. Director
July 26, 2002
ANGELA M GROOMS
BRIDGEWATER HYDROELECTRIC PLANT
13339 HAGERS FERRY RD MAIL CODE EC IE
HUNTERSVILLE, NC 28078
Dear Permittee:
I1•WA
NCDENR
NORTH CAROUNA DEPARTMENT OF
ENVIRONMENT AND NATURAL RESOURCES
Subject: Reissue - NPDES Wastewater Discharge Permit
Bridgewater Hydroelectric Plant
COC Number NCG500102
Burke County
In response to your renewal application for continued coverage under general permit NCG500000, the Division of
Water Quality (DWQ) is forwarding herewith the reissued wastewater general permit Certificate of Coverage
(COC). This COC is reissued pursuant to the requirements of North Carolina General Statute 143-215.1 and the
Memorandum of Agreement between the state of North Carolina and the U.S. Environmental Protection Agency,
dated May 9, 1994 (or as subsquently amended).
The following information is included with your permit package:
* A copy of the Certificate of Coverage for your treatment facility
* A copy of General Wastewater Discharge Permit NCG500000
* A copy of a Technical Bulletin for General Wastewater Discharge Permit NCG500000
Your coverage under this general permit is not transferable except after notice to DWQ. The Division may require
modification or revocation and reissuance of the Certificate of Coverage. This permit does not affect the legal
requirements to obtain other permits which may be required by DENR or relieve the permittee from responsibility
for compliance with any other applicable federal, state, or local law rule, standard, ordinance, order, judgment, or
decree.
If you have any questions regarding this permit package please contact Aisha Lau of the Central Office Stormwater
and General Permits Unit at [phone], ext. 578
Sincerely,
for Alan W. Klimek, P.E.
cc: Central Files
Stormwater & General Permits Unit Files
Asheville Regional Office
64,
1617 Mail Service Center, Raleigh, North Carolina 27699-1617 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer 50% recycled/ 10% post -consumer paper

STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
GENERAL PERMIT NO. NCG500000
CERTIFICATE OF COVERAGE No. NCG500102
TO DISCHARGE NON -CONTACT COOLING WATER, COOLING TOWER AND BOILER
BLOWDOWN, CONDENSATE AND SIMILAR WASTEWATERS 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,
DUKE ENERGY CORPORATION
is hereby authorized to discharge
NON -CONTACT COOLING WATER / CONDENSATE
water or similar wastewater from a facility located at
BRIDGEWATER HYDROELECTRIC PLANT
ROUTE 2, BOX 290
MORGANTON
BURKE COUNTY
to receiving waters designated as the Catawba River, a class WS-IV water, in the Catawba River Basin in
accordance with the effluent limitations, monitoring requirements, and other conditions set forth in Parts I, II, III,
and IV of General Permit No. NCG500000 as attached.
This certificate of coverage shall become effective August 1, 2002.
This Certificate of Coverage shall remain in effect for the duration of the General Permit.
Signed this day July 26, 2002.
for Alan W. Klimek, P.E., Director
Division of Water Quality
By Authority of the Environmental Management Commission

State of North Carolina
Department of Environment,
Health and Natural Resources
Division of Water Quality
James B. Hunt, Jr., Governor
Jonathan Howes, Secretary
A. Preston Howard, Jr., P.E., Director
David F. Mitchell
Duke Power Company
13339 Hagers Ferry Road
Huntersville , NC 28078
July 24, 1997
Subject: Certificate of Coverage No. NCG500102
Renewal of General Permit
Bridgewater Hydro Plant
Burke County
Note: Effluent limitations for this hydroelectric facility are found on pages A.2. and A.3.
Dear Permittee:
In accordance with your application for renewal of the subject Certificate of Coverage, the Division is forwarding
the enclosed General Permit. This renewal is valid until July 31, 2002. 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 U.S. Environmental Protection Agency dated December 6,1983. If any parts, measurement
frequencies or sampling requirements contained in this permit are unacceptable to you, you have the right to request
an individual permit by submitting an individual permit application. Unless such demand is made, this certificate
of coverage shall be final and binding.
The Certificate of Coverage for your facility is not transferable except after notice to the Division. Use the enclosed
Permit Name/Ownership Change form to notify the Division if you sell or otherwise transfer ownership of the
subject facility. The Division may require modification or revocation and reissuance of the Certificate of Coverage.
This permit does not affect the legal requirements to obtain other permits which may be required by the Division of
Water Quality, the Division of Land Resources, Coastal Area Management Act or any other Federal or Local
governmental permit that may be required.
If you have any questions concerning this permit, please contact the NPDES Group at the address below.
Sincerely,
A. Preston Howard, Jr., P.E.
cc: Central Files
Asheville Regional Office
NPDES File
Facility Assessment Unit
P.O. Box 29535, Raleigh, North Carolina 27626.0535 [phone] FAX [phone] p&[e-mail]
An Equal Opportunity Affirmative Action Employer 50% recycled / 10% post -consumer paper

t -
STATE OF NORTH CAROLINA '
DEPARTMENT OF ENVIRONMENT, HEALTH, AND NATURAL RESOURCES
DIVISION OF WATER QUALITY t
GENERAL PERMIT NO. NCG500000
CERTIFICATE OF COVERAGE NO. NCG500102
TO DISCHARGE NON -CONTACT COOLING WATER, COOLING TOWER AND BOILER
BLOWDOWN, CONDENSATE, EXEMPT STORMWATER, COOLING WATERS ASSOCIATED WITH
HYDROELECTRIC OPERATIONS, AND SIMILIAR WASTEWATERS 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,
Duke Power Company
is hereby authorized to discharge
cooling water and other waters associated with hydroelectric operations
from a facility located at
Bridgewater Hydro Plant
Route 2, Box 290
Morganton
Burke County
to receiving waters designated as subbasin 30830 in the Catawba River Basin
in accordance with the effluent limitations, monitoring requirements, and other conditions set forth
in Parts I, II, III and IV of General Permit No. NCG500000 as attached.
This certificate of coverage shall become effective August 1,1997.
This certificate of coverage shall remain in effect for the duration of the General Permit.
Signed this day July 24,1997.
A. Preston Howard, Jr., P.E., Director
Division of Water Quality
By Authority of the Environmental Management Commission

Duke Power Company
Electric System Support
1333.9 Halters Ferry Road
Hunterscille, NC 28078-7999
�DUKEPOWER
January 31, 1997
North Carolina Department of Environment
Health, and Natural Resources
Attn: Mr. David Goodrich
Supervisor, NPDES Permits Group
512 North Salisbury Street
Raleigh, North Carolina 27604
Subject: Duke Power Company Hydro Stations
Renewal of NPDES General Permit NCG500000
Bridgewater Hydro Station - NCG500102
Cowans Ford Hydro Station - NCG500139
Lookout Shoals Hydro Station - NCG500120
Mountain Island Hydro Station - NCG500131
Oxford Hydro Station - NCG5001 l9
Rhodhiss Hydro Station - NCG500108
Tuxedo Hydro Station - NCG500110
Certified: P 109 267 704
Dear Mr. Goodrich:
7/
3,2D�J
Enclosed are the renewal applications for NPDES general permit NCG500000 for discharge of cooling water,
condensate, and other similar discharges at seven hydroelectric stations operated by Duke Power Company. A
check in the amount of $2800.00 for the permit renewal application fee ($400.00 for each station) is enclosed.
Attachments 1 through 7 include a Notice of Intent form NCG5000000 for each hydroelectric station, the location
of the station shown on a portion of a USGS quadrangle map, and a station drawing with the location of outfalls (no
cross -sectional drawing is available for Tuxedo Hydro). The discharge volumes and flow rates under Section 4.B.
of the application form are based on an average daily discharge over 24 hours of continuous operation. When
mixed with the discharge from the hydroelectric turbines, this flow represents less than four hundredths of one
percent (0.04%) of the total flow of water through each station (Attachment 8). A generic description of cooling
water discharges and other discharges that can occur at these stations is provided in Attachment 9.
If you have any questions or need any further information, please contact Ron Lewis at [phone] or me at
[phone]. As I am acting for the owner, please address all correspondence to my attention at the above
address. Your attention and prompt notification of any problems with this application will be greatly appreciated.
Sincerely,
John S. Carter, Manager
Environmental Division / Water Protection
rel
attachments
Q�Printed on Tree Free Paper

(Attachment 8)
Duke Power Company
N.C. Hydroelectric Facilities
Table of Water Flows
Station Total Turbine
Max. Once -
% Max. Once -
Water Flow at
Through
Through
Best Efficiency
Cooling Water
Cooling Water
(B.E.) (MGD)
(Service Water)
vs. Turbine
Flow (MGD)
Water Flow at
B.E.
Bridgewater
1353
0.004
0.0003
Cowans Ford
26450
8.491
0.0320
Lookout Shoals
2623
0.020
0.0008
Mountain Island
5907
0.173
0.0029
Oxford
3502
0.087
0.0025
Rhodhiss
3878
0.027
0.0007
Tuxedo
270
0.043
0.0159

(Attachment 9)
Generic Description of Cooling Water Discharges and
Other Discharges at Hydroelectric Facilities of Duke Power Company
Cooling Water Discharges: An estimate of the volume and flow rate of cooling water used at
each hydroelectric facility is listed in the respective Notice of Intent forms. Various components
within a hydroelectric facility - generate heat during operation and need to be cooled. These
components may be cooled with a lubricant such as oil or water. In some instances, oil
reservoirs may be cooled by a heat exchanger with once through non -contact cooling water.
A description of cooling water discharges is listed below:
1. Generator Air Cooling Water: Only generators at Cowans Ford hydro are cooled by passing
non -contact cooling water through coils in a water jacket and circulating air over the coils.
The flow of each unit combine and discharge in the facility tailrace at a single point, which is
below the surface of the water.
2. Water Cooled Bearings: All seven hydro stations have bearings that are cooled with water
withdrawn from the station's service water and discharged via a concrete trench, sump, or
wheel pit to the tailrace. The discharge point may be below the water level at some locations.
3. Lube Oil Coolers: All seven hydro stations have oil lubricated bearings that may have
associated lube oil coolers or heat exchangers. Non -contact cooling water used to cool these
heat exchangers is discharged to the tailrace.
4. Water Cooled Air Compressors: Cowans Ford, Oxford, and Rhodhiss hydro stations have air
compressors that are water cooled. Air compressors provide air for pressurizing oil systems,
unwatering, and turbine braking. The non -contact cooling water is discharged to the tailrace
via a concrete sump or trench.
Other Discharges
Component Lubrication: Since various components of systems within the station require
lubrication for proper operation and are in direct contact with water, lubrication processes are
minimized. Descriptions of lubricating processes associated with such systems are listed below:
1. Head Gates: All hydro stations have head gates that are used to isolate turbines from the
intake waters in the lake or river in order to gain access to the unit internals. Prior to the head
gates being removed or operated (normally no more than once per year), the mechanism must
be lubricated. Less than five gallons of oil may be used at that time to assure the mechanism
works without binding. Some head gates may have a pivot point that may be either manually
or continuously lubricated with grease to assure proper operation.
Page 1

55
2. Wicket Gates: All hydro stations use wicket gates to control the flow of water to each unit.
They consist of a series of gates that surround the turbine and subsequently control the
generator speed. There are mechanical linkages between the wicket gates of each unit that
are periodically lubricated with grease at the pivot points of each wicket gate.
3. Floodgates: Cowans Ford and Oxford hydro stations have flood gates that can be raised in
an emergency if the potential of flooding exists. Tests are required annually by the Federal
Energy Regulatory Commission to ensure the gates are operable in the event of such an
emergency. Up to a gallon of oil may be used to lubricate each flood gate to prevent
binding.
Fire Protection Water: The transformer substation at Cowans Ford Hydro Station has a fire
suppression system that sprays non -chlorinated water in the event of a fire. This system is
periodically tested to assure that they are operable. Water from the tests may drain to stormwater
drains and to the tailrace. In addition, fire hydrants at stations are periodically tested. This non -
chlorinated water flows to yard drains that discharge to storm drains or to the tailrace.
Oil/Water Separators: Oil/water separator units may be used to process oily wastewater which
has been collected at the site during maintenance and/or. cleaning activities (i.e. condensate from
air compressors). The wastewater produced from such units will be discharged to the floor
drainage system. The remaining oily waste will be disposed and handled according to applicable
waste regulations.
Sanitary Systems: All Locations employ an approved septic tank system.
Sumps and Water Collection Systems: The nature of hydroelectric facilities is such that water
is constantly moving through the facility via designed stress relief seepage and minor cooling
water leakage in piping systems. These leakage sources are: bearing cooling water, generator air
cooling water, strainer systems, and seepage through the dam proper. The systems and activities
listed in this section result primarily in discharge of this water to the tailrace of the hydroelectric
facility.
1. Floor Drains: Many of the facilities are equipped with floor drains. These floor drains are
plugged at some facilities or may discharge to a sump prior to discharge to the tailrace. Their
purpose is for the collection of condensate, groundwater seepage and equipment leakage
throughout the facility.
Page 2

2. Station Sumps: The sumps, when present, may collect service water leakage, drain valve
relief water, bearing cooling water, wheel pit drainage, lube oil cooling water, emergency
flood waters, and leakage from the gallery. These sumps may collect small amounts of oil
and grease, depending on the source of the water. Oil absorbent materials are used in the
sumps to minimize oil and grease discharged.
3. Unwatering Sumps: Cowans Ford hydro station uses pumps or pressurized air to remove
water from within the turbine when maintenance is to be performed. Certain sections of a
unit may be isolated by head gate installation and then unwatered to allow access to station
equipment that may need repairs or inspections. These sumps contain only raw water from
the unwatering process.
4. Gallery Wash Water: The Gallery is a tunnel that provides access to certain bearings. Due to
seepage of groundwater through wall fissures in the Gallery, mineral encrustation develops
(calcium primarily from the concrete). Periodically, these mineral deposits are removed by
pressure washing with water. This wash water would flow into the trench that discharges to
the tailrace.
5. Wheel Pit Wash Water: The wheel pit is the area above the turbine that contains oil
lubricated bearings, motors, gate arms, and lube oil coolers. The wheel pit water is pulled out
with the hydro flow when the unit is on line or is pumped out. The wheel pit can become
oily or greasy during normal station operation and is cleaned periodically. Depending on the
location and the size of the wheel pit, this may be performed either with a high pressure spray
water wash and/or is done by hand wiping with a degreaser. Detergents or degreasers on
Duke Power Company's approved chemical's list may be used in the washing process. This
activity is performed for general housekeeping and to assure that safe access can be obtained
to the wheel pit.
Trash Removal: Since hydroelectric facilities are located on rivers and lakes, various floating
debris collects on the upstream side of the dam. Sediment accumulates along the upstream side
of the dam and is deposited in the river bed or lake bottom. There are several systems that are
designed to deal with removal of this accumulated trash and sediment.
1. Service Water Strainers: A system of strainers collect debris that periodically has to be
backwashed. These strainer systems are backwashed with water to prevent clogging of pipes
or premature equipment failure. Some locations have automatic back wash systems.
2. Trash Gates: Trash gates are available at some locations to allow debris that accumulates on
the upstream side of a station to pass downstream.
3. Trash Rack Cleaning: Floating debris often accumulates in front of the station on the trash
racks, preventing passage into the station. If debris were allowed to pass into the station,
equipment damage would result. The accumulated debris is periodically removed to prevent
restrictions in the water flow into the units and disposed of in an approved manner.
Page 3

(Attachment 1)
Notice of Intent
for
Bridgewater Hydro Station
Duke Power Company

State of North Carolina
Department of Environment, Health and Natural Resources
Division of Water Quality
512 North Salisbury Street•Raleigh, North Carolina 27626
James B. Hunt, Jr., Governor A. Preston Howard, Jr., P.E.
Jonathan B. Howes, Secretary Director
NOTICE OF INTENT
National Pollutant Discharge Elimination System
Application for Coverage under General Permit NCG500000; Non -contact cooling water, boiler blowdown, cooling tower blowdown,
condensate, and similar point source discharges.
1. Name, Address, location, and telephone number of facility requesting Permit.
A.
Official Name:
Duke Power Company - Bridgewater Hydro Station
B.
Mailing Address:
c/o John Carter
(1) Street Address;
13339 Hagers Ferry Road �?
(2) city;
Huntersville
(3) State;
North Carolina
(4) Zip;
28078 - 7929
(5) County,
Mecklenburg
C.
Location. (Attach map delineating
general facility location)
(1) Street Address;
Route 2 Box 290
(2) City;
Morganton =-
(3) State;
North Carolina 28655
(4) County,
Burke
D.
Telephone Number;
(7 0 4) 584 -14 51
o ..
2. Facility Contact:
A.
Name;
J.P. McLean
B.
Title;
Supervisor
C.
Company Name;
Duke' Power Company
D.
Phone Number,
(7 04) 5 8 4 -14 51
3. Application type (check appropriate selection):
A. New or Proposed;
B. Existing; x If previously permitted, provide permit number NCG5 0 00102
and issue date July 15, 1993
C. Modification;
(Describe the nature of the modification):
4. Description of discharge
A. Please state the number of separate discharge points.
1,❑; 2,®; 3,❑; 4,❑; .❑-
B. Please describe the amount of wastewater being discharged per each separate discharge point:
1: 1728 gallons per day (gpd) 2: 2448 (gpd) 3: (gpd) 4: (gpd)
Page 1
STF NCDO027F.I

C. Check the duration and frequency of the discharge, per each separate discharge point: �}
1. Continuous:
2. Intermittent (please describe): Only when unit operates
3. Seasonal (check month(s) the discharge occurs): January ® ; February ® ; March ® ; April ® ; May ® ; June ® ; July 23 ;
August ® ; September ® ; October ® ; November g] ; December ® . Di scharge can occur any month
4. How many days per week is there a discharge? (check the days the discharge occurs) Di scharge can occur any day
Monday ® , Tuesday ® , Wednesday ® , Thursday gg , Friday ® , Saturday ® , Sunday ® .
5. How much of the volume discharged is treated? (state in percent) 0 %
What type of wastewater is discharged, per separate discharge point? (place check next to correct type):
1. Non -contact cooling water, X
2. Boiler blowdown;
3. Cooling tower blowdown;
4. Condensate;
5. Other (please describe); See Attachment 9
Please list any known pollutants that are present in the discharge, per each separate discharge point (if applicable);
E. Please describe the type of process the cooling water is being discharged from, per separate discharge point (i.e. compressor,
boiler blowdown, cooling tower blowdown, air conditioning unit, etc.): Once through cooling water
(See Attachment 9)
F.
Please check the type of chemical added to the wastewater for treatment or other, per separate discharge point:
1. Biocides;
2. Corrosion inhibitors;
3. Chlorine;
4. Algae control;
5. Other (please describe);
6. None; X
If 1, 2, 3, 4, or 5 was checked, please state the name and manufacturer of the chemical additive. Also include a completed Biocide
101 form, and manufacturers' information on the additive with the application for the Division's review.
G. Is there any type of treatment being provided to the wastewater before discharge? (i.e. retention ponds, settling ponds, etc.); if yes,
please describe. Give design specifics (i.e. design volume, retention time, surface area, etc.). Existing treatment facilities should be
described in detail and design criteria or operational data should be provided (including calculations) to ensure that the facility can
comply with requirements of the General Permit. None
NOTE: Construction of any wastewater treatment facilities require submission of three (3) sets of plans and specifications along with their
application. Design of treatment facilities must comply with requirement 15A NCAC 2H .0138. If construction applies to the
discharge, include the three sets of plans and specifications with the application.
5. What is the nature of the business applying for this permit?public Utility, Electricity Generation
6.
Name of receiving water: Catawba River Classification: WS - I I I
(Attach a USGS topographical map with all discharge point(s) clearly marked)
Page 2
crc Nrnnn,)--

7. Is the discharge directly to the receiving water? (Y, N) Y
If no, state specifically the discharge point. Mark clearly the pathway to the potential receiving waters on the site map. (This
includes tracing the pathway of the storm sewer to its discharge point, if a storm sewer is the only viable means of discharge.)
8. Please address possible non -discharge alternatives for the following options:
A. Connection to a Regional Sewer Collection System; Not available
B. Subsurface Disposal; Too much fl ow
C. Spray Irrigation; Not justifiable, no significant thermal gradient or pollutant load
9. 1 certify that I am familiar with the information contained in the application and that to the best of my knowledge and belief such
information is true, complete, and accurate.
Printed Name of Person Signing
Title
Date Application Signed
Signature of Applicant
T.C. McMeekin
Senior V.P. Power Generation
NORTH CAROL.INA GENERAL. STATUTE 143-215.6E (1) PROVIDES THAT:
Any person who knowingly makes any false statement, representation, or certification in any application, record, report, plan or other
document fled or required to be maintained under Article 21 or regulations of the Environmental Management Commission implementing
that Article, or who falsifies, tampers with or knowingly renders inaccurate any recording or monitoring device or method required to be
operated or maintained under Article 21 or regulations of the Environmental Management Commission implementing that Article, shall be
guilty of a misdemeanor punishable by a fine not to exceed $10,000, or by imprisonment not to exceed six months, or by both. (18 U.S.C.
Section 1001 provides a punishment by a fine of not more than $10,000 or imprisonment not more than 5 years, or both, for a similar
offense.)
Notice of Intent must be accompanied by a check or money order for $400.00 made payable to the North Carolina Department of Environment,
Health, and Natural Resources. Mail three (3) copies of entire package to:
Division of Environmental Management
NPDES Permits Group
Post Office Box 29535
Raleigh, North Carolina 27626-0535
Page 3
STF NCDO027F 3

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SECTION OF USGS TOPOGRAPHIC
MAP OF THE AREA AROUND
BRIDGEWATER HYDRO STATION
SCALE 1:24000
t000 0 - 1000 _ 2000 3000 4000 5000 6000 7000 FEET
.� 0 tKLOuETU
CONTOUR INTERVAL 20 FEET

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002 - Unit 2 Lube Oil Cooler Water Discharge
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POWERHOUSE ELEVATION
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BRIDGEWATER HYDRO STATION
i NATIONAL POLLUTANT DISCHARGE
ELIMINATION SYSTEM (NPOES)
POINT SOURCE DISCHARGES
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State of North Carolina
Department of Environment,
Health and Natural Resources
Division of Environmental Management
James B. Hunt, Jr., Governor
Jonathan B. Howes, Secretary
A. Preston Howard, Jr., P.E., Director
July 15, 1993
M. D. McIntosh
13339 Hagers Ferry Road
Huntersville, NC 28078
ORA
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[DFEE HNF1
Subject: General Permit No. NCG500000
Duke Power Company
COC NCG500102
Burke County
Dear Mr. McIntosh:
In accordance with your application for discharge permit received on April 23, 1993, we are forwarding
herewith the subject certificate of coverage to discharge under the subject state - NPDES general 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.
If any parts, measurement frequencies or sampling requirements contained in this permit are
unacceptable to you, you have the right to request an individual permit by submitting an individual permit
application. Unless such demand is made, this certificate of coverage shall be final and binding.
Please take notice that this certificate of coverage is not transferable except after notice to the Division
of Environmental Management. The Divsion of Environmental Management may require modification or
revocation and reissuance of the certificate of coverage.
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.
If you have any questions concerning this permit, please contact Ms. Susan Robson at telephone number
919/733-5083.
cc:
&n QOINTIii'gned By
Coleen H. Sullins
A. Preston Howard, Jr., P. E.
Asheville Regional Office
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

Id
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT, HEALTH, AND NATURAL RESOURCES
DIVISION OF E STVIRONIVIENTAL MANAGEMENT
GENERAL PERMIT NO. NCG500000
CERTIFICATE OF COVERAGE No. NCG500IO2
TO DISCHARGE NON -CONTACT COOLING WATER, COOLING TOWER AND BOILER BLOWDOWN,
CONDENSATE AND SIMILIAR WASTEWATERS 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,
Duke Power Company
is hereby authorized to continue operation of a treatment system for the generation of once -through non -contact
bearing cooling water with the discharge of wastewater from a facility located at
NCSR 1233
Bridgewater Hydroelectric Dam
Burke County
to receiving waters designated as Catawba River in the Catawba River Basin
in accordance with the effluent limitations, monitoring requirements, and other conditions set forth in Parts I,11, III
and IV of General Permit No. NCG500000 as attached.
This certificate of coverage shall become effective July 15,1993
This Certificate of Coverage shall remain in effect for the duration of the General Permit.
Signed this day July 15,1993
Original Signed By
Cofeen H. Sullins
A. Preston Howard, Jr., P.E.,Director
Division of Environmental Management
By Authority of the Environmental Management Commission

UNITED STATES
..-JARTMENT OF THE INTERIOR
GEOLOGICAL SURVEY
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SOC PRIORITY PROJECT: Yes No X
t IF YES, SOC NUMBER
t,
TO: PERMITS AND ENGINEERING UNIT
C'W,tr WATER QUALITY SECTION
ATTENTION: Susan Robson
�4AY 2 7 1993
V,w DATE: May 24, 1993
NPDES STAFF REPORT AND RECOMMENDATION
COUNTY Burke
PERMIT NUMBER NCG500102
PART I - GENERAL INFORMATION
1. Facility and Address: DUKE POWER CO - BRIDGEWATER HYDRO
RT 2 Box 290
MORGANTON NC 28655
2. Date of Investigation: no site visit conductec
03 -03 -30
�L, 3A �i.JOF-
3. Report Prepared By: Jim Reid
4. Persons Contacted and Telephone Number: no site visit
5. Directions to Site: From the intersection of Highway 70 and SR
1233 (East of Marion at Bridgewater, NC), travel North on SR 1233
approximately 3.0 miles to the site which is on the right.
6. Discharge Point(s), List for all discharge points:
Latitude: 350 44' 34" Longitude: 810 50, is"
Attach a USGS map extract and indicate treatment facility site and
discharge point on map.
U.S.G.S. Quad No. U.S.G.S. Quad Name GLEN ALPINE, NC
7. Site size and expansion area consistent with application?
_X_ Yes No I£ No, explain:
8. Topography (relationship to flood plain included): no site visit
C `�
4
Page I
C f

9. Location of nearest dwelling: no si.i:P visit
10. Receiving stream or affected surface waters: Catawba River
a. Classification. WS-IV, Index No. 11-(31)
b. River Basin and Subbasin No.: CTB 030830
C. Describe receiving stream features and pertinent downstream
uses: Water supply, wildlife, recreation
PART II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1, a. Volume of wastewater to be permitted 0.004176 MGD (Ultimate
Design Capacity)
b. What is the current permitted capacity of the Wastewater
Treatment facility? 0.004176
C. Actual treatment capacity of the current facility (current
design capacity 00.004176
d. Date(s) and construction activities allowed by previous
Authorizations to Construct issued in the previous two years:
None
e. Please provide a description of existing or substantially
constructed wastewater treatment facilities: Once through,
non -contact bearing cooling water
f. Please provide a description of proposed wastewater treatment
facilities: No treatment facilities are proposed
g. Possible toxic impacts to surface waters: None
h. Pretreatment Program (POTWs only): N/A
in development approved
should be required not needed X
2. Residuals handling and utilization/disposal scheme: None generated
a. If residuals are being land applied, please specify DEM
Permit Number
Residuals Contractor
Telephone Number
b. Residuals stabilization: PSRP PFRP OTHER
Page 2

c. Landfill:
d. Other disposal/utilization scheme (Specify):
3. Treatment plant classification (attach completed rating sheet): No
facilities exist, no rating sheet attached
4. SIC Codes(s): 4911
Wastewater Code(s) of actual wastewater, not particular facilities
i.e., non -contact cooling water discharge from a metal plating
company would be 14, not 56.
Primary 14 Secondary
Main Treatment Unit Code: 00000
PART III - OTHER PERTINENT INFORMATION
1. Is this facility being constructed with Construction Grant Funds
or are any public monies involved. (municipals only)? No
2. Special monitoring or limitations (including toxicity) requests:
No
3. Important SOC, JOC, or Compliance Schedule dates: (Please
indicate) N/A
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: Nature of "waste stream", non -contact cooling
water with no measurable temperature differential, does not
warrant construction of a spray irrigation system
Connection to Regional Sewer System: Not available
Subsurface: See "Spray Irrigation" comments above
Other disposal options:
5. Other Special Items: None

PART IV - EVALUATION AND RECOMMENDATIONS
The total "waste" flow, 4176 gpd (non -contact cooling water with
no measurable temperature differential), could not possibly be
detected in the Catawba River (with its volume) at the point of
discharge. Due to the volume of flow and nature of waste, no site
visit was conducted.
Issuance of the General Permit is recommended.
Signature of Re t Preparer
ater Quality Regional Supervisor
oacw

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UNITED STATES
DEPARTMENT OF THE INTERIOR
GEOLOGICAL SURVEY
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