NCG500102_HistoricFile_20200512

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Water Resoorces
L»NVt1 ONMILN`'IA (WAL;TY '
January 19, 2016
Mr. Steve Cahoon
Duke Energy Carolinas, LLC
410 S Wilmington St
Raleigh, NC 27601
Subject: Renewal of General Permit NCG500000
Bridgewater Hydroelectric Station
Certificate of Coverage NCG500102
Burke County
Dear Permittee:
The Division has renewed the subject General Permit. We appreciate your patience during the
longer-than-expected renewal period. The Division hereby issues the updated version of Certificate of
Coverage (CoC) NCG500102 under General Permit NCG500000. It 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.
Contact the Asheville Regional Office prior to any sale or transfer of the permitted facility.
Regional Office staff will assist you in documenting the transfer of this CoC.
This permit does not affect the legal requirements to obtain any other State, Federal, or Local
governmental permit that may required. If you have any questions concerning the requirements of the
General Permit,please contact Charles Weaver of the NPDES staff[919 807-6391 or
[e-mail]].
�xrF
Sincerely,
,dam for S. J �'�
a Zimmerman irector
Y
Division of Water Resources
cc: Asheville Regional Office
NPDES file RECEIVED
Division of Water ResourcOs
JAN 2 8 2016
State of North Carolina Environmental Quality I Water Re�ources
1617 Mail Service Center I Raleigh,NC 27699-1617 Vla"'r fJuali#v Regional Operations
919 807 6300 919-807-6389 FAX 'o �� `''
http://portal.ncdenr.org/web/wq

STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENTAL QUALITY
DIVISION OF WATER RESOURCES
GENERAL PERMIT NCG500000
CERTIFICATE OF COVERAGE NCG500102
DISCHARGE OF NON-CONTACT COOLING WATER, COOLING TOWER AND BOILER
BLOWDOWN, CONDENSATE, EXEMPT STORMWATER, COOLING WATERS ASSOCIATED
WITH HYDROELECTRIC OPERATIONS, 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 Carolinas, LLC
is hereby authorized to discharge from a facility located at
Bridgewater Hydroelectric Station
5790 Power House Rd
Morganton
Burke County
to receiving waters designated as the Catawba River, a class WS-IV stream 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, I1, III and IV hereof.
This certificate of coverage takes effect January 19, 2016.
This Certificate of Coverage shall remain valid for the duration of the General Permit.
Signed this day January 19, 2016
C
for Vv'i�si
y Zimmerman, Director
on of Water Resources
By Authority of the Environmental Management Commission
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NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Resources
Pat McCrory Thomas A.Reeder John E.Skvarla, III
Governor Director Secretary
NOTICE OF RENEWAL INTENT
(Required by 15A NCAC 02H.0127(d)1;[term definition see 15A NCAC 02H.0103(19)1
Application for renewal of existing coverage under General Permit NCG500000
Existing Certificate of Coverage(CoQ: NCG500102
(Press Tab to navigate form)
1) Mailing address of facility owner/operator: (address to which all correspondence should be mailed)
Company Name Duke Energy Carolinas,LLC
Owner Name Steve Cahoon
Street Address 410 S.Wilmington St.
City Raleigh State NC ZIP Code 27601 -
Telephone# [phone] Fax# 919`-546 4409
Email Address [e-mail] RECEIVEDIDENRIDWR
JAN 3 0 2015
2) Location of facility producing discharge:
Water Quality
Facility Name Bridgewater Hydroelectric Station
�ermittinq Sectior
Facility Contact Nob Zalme
Street Address 5790 Power House Road
City Morganton State NC ZIP Code 28655-
County Burke
Telephone# [phone] Fax# - -
Email Address [e-mail]
3) Description of Discharge:
a) Is the discharge directly to the receiving stream?
Z Yes
No—Please 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):
Four
Page 1 of 3

NCG500000 Renewal Application
c) What type of wastewater is discharged?Indicate which discharge points,if more than one.
® Non-contact cooling water Outfall(s)#: 001,002,003,004
Boiler Blowdown Outfall(s)#:
❑ Cooling Tower Blowdown Outfall(s)#:
❑ Condensate Outfall(s)#:
® Other Outfall(s)#: 004
(Please describe "Other"): Station sumo,which includes powerhouse drainage and non-contact
cooling water.
d) Volume of discharge per each discharge point(in GPD):
#001: 72,000 GPD #002:72,000 GPD #003:21,600 GPD #004:25.920 GPD
4) Please check the type of chemical[s]added to the wastewater for treatment,per each separate discharge
point(if applicable, use separate sheet):
❑Chlorine ❑Biocides ❑Corrosion inhibitors ❑Algaecide ❑Other ®None
If gLny box other than None is checked,a completed Biocide 101 Form and manufacturers'information on the
additive must be submitted to the following address for approval:
NC DENR J DWR I Environmental Sciences.Section
Aquatic Toxicology Unit
1621 Mail Service Center
Raleigh,NC 27699-1621
5) Is there any type of treatment being provided to the wastewater before discharge?(i.e., retention ponds,
settling ponds, etc.)
❑ 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.
® No
6) Discharge Frequency:
a) The discharge is: ® Continuous ❑ Intermittent ❑ Seasonal
i) If the discharge is intermittent,describe when the discharge will occur:
ii) If seasonal,check the month(s)the discharge occurs:
❑Jan ❑Feb ❑Mar. ❑Apr ❑May ❑Jun ❑Jul ❑Aug. ❑ Sept. ❑Oct. ❑Nov. ❑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.
Page 2 of 3

NCG500000 Renewal Application
Additional Application Requirements:
The following information must be included in duplicate [original+ I copy] 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,per 15A NCAC 02H.0138(b)f l).
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: Randy C.Herrin Title: GM III Regional Fleet
(Please review 15A NCAC 02H.0106(e)for authorized signing officials)
Cl cl( e eto r date.
Signature of Appl ant Date Signed
North Carolina General Statute 4 143-215.613 provides that:
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 this Article or a rule implementing this
Article; or who knowingly makes a false statement of a material fact in a rulemaking proceeding or contested case
under this Article;or who falsifies,tampers with,or knowingly renders inaccurate any recording or monitoring device
or method required to be operated or maintained under this Article or rules of the Commission implementing this
Article, shall be guilty of a Class 2 misdemeanor which may include a fine not to exceed ten thousand dollars
($10,000). '18 U.S.C. Section 1001 provides a punishment by a fine 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 nays an annual fee for coverage under NCG500000.
Mail the original and one copy of the entire package to:
NC DENR/DWR/Water Permitting Section
1617 Mail Service Center
Raleigh,North Carolina 27699-1617
Attn: Charles Weaver
Page 3 of 3

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A
NCDENR
North Carolina Department of Environment and Natural Resources
Pat McCrory Donald R.van der Vaart
Governor Secretary
July 1,2015
Nob Zalme
Duke Energy
Kannapolis Operations Center
28.18 S. Main Street
Concord,NC 28027
SUBJECT: Compliance Evaluation Inspection
Bridgewater Hydroelectric Station
Permit No:NCG500102
Burke County
Dear Mr. Zalme:
On June 22, 2015, I conducted a Compliance Evaluation Inspection at the Bridgewater Hydroelectric Station.
The facility appeared to be in compliance with permit NCG500102.
Please refer to the enclosed inspection report for observations and comments. If you or your staff have any
questions, please call me at 828-296-4500.
Sincerely,
Linda Wiggs
Environmental Senior Specialist
Asheville Regional Office
Enc.Inspection Report
cc: MSC 1617-Central Files-Basement
Asheville Files
G:\WR\WQ\Burke\Wastewater\General\Non-contact NCG50\Duke-Bridgewater\CEI.June2015.Ltr.doe
Water Quality Regional Operations—Asheville Regional Office
2090 U.S.Highway 70 Swannanoa,North Carolina 28778
Phone:[phone] FAX:[phone]
Internet:http:l/portal.ncdenr.org/webANq
An Equal Opportunity\Affirmative Action Employer

United States Environmental Protection Agency Form Approved.
EPA
)A Washington,D.C.20460 OMB No.2040-0057
Water Compliance Inspection Report Approval expires s-31-98
Section A:National Data System Coding(i.e.,PCS)
Transaction Code NPDES yr/mo/day Inspection Type Inspector Fac Type
IN 1 2 IS I 3 I IvcG500102 I11 121 15/06/22 17 18 19 1 G 1 201
Li
Inspection Work Days Facility Self-Monitoring Evaluation Rating B1 QA ----------Reserved------------
671 70 I 71 I—� 72 i N � 73I—LJ I 74 751 1 I I I�IJ_t I '80
LJ Section B:Facility Data
LJ L LLL�J.
Name and Location of Facility Inspected(For Industrial Users discharging to POTW,also include Entry Time/Date Permit Effective Date
POTW name and NPDES permit Number) 10:00AM 15/06/22 12/08/03
Bridgewater Hydroelectric Station
ExitTimelDate permit Expiration Date
5790 Power House Rd
11:30AM 15/06/22 15l07/31
Morganton NC 28655
Name(s)of Onsite Representative(s)/Titles(s)/Phone and Fax Number(s) Other Facility Data
Name,Address of Responsible Official/Title/Phone and Fax Number
Contacted
Mike Lail,5790 Power House Rd Morganton NC 28655H828-391-6740/
Yes
Section C:Areas Evaluated During Inspection(Check only those areas evaluated)
® Permit ® Flow Measurement ® Operations&Maintenance ® Records/Reports
® Self-Monitoring Program ® Facility Site.Review Effluent/Receiving Waters ® Laboratory
Section D:Summary of Finding/Comments(Attach additional sheets of narrative and checklists as necessary)
(See attachment summary)
Name(s)and Signature(s)of Inspector(s) Agency/Office/Phone and Fax Numbers Date
Linda S Wiggs ARO WQ!/828-296-4500 Ext.4653/ 60
Signature of Management Q A Reviewer Agency/Office/Phone and Fax Numbers Date
EPA Form 3560-3(Rev 9-94)Previous editions are obsolete.
Page# 1

NPDES yr/mo/day Inspection Type 1
3I NCG500102 I11 12 15/06/22 17 18 ICI
\\
Section D:Summary of Finding/Comments(Attach additional sheets of narrative and checklists as necessary)
Present during the inspection were Glen Long, Melanie Gardner, Nob Zalme, Dennis Keller,Jeremy
Greene and Mike Lail.
Page# 2

Permit: NCG500102 Owner-Facility:
Bridgewater Hydroelectric Station
Inspection Date: 06/22/2015 Inspection Type: Compliance Evaluation
Operations& Maintenance Yes No NA NE
Is the plant generally clean with acceptable housekeeping? ® ❑ ❑ ❑
Does the facility analyze process control parameters,for ex: MLSS,MCRT, Settleable ❑ ❑ ®' ❑
Solids, pH, DO, Sludge Judge, and other that are applicable?
Comment:
Permit Yes No NA NE
(if the present permit expires in 6 months or less). Has the permittee submitted a new ® ❑ ❑ ❑
application?
Is the facility as described in the permit? ® ❑ ❑ ❑
#Are there any special conditions for the permit? ® ❑ ❑
Is access to the plant site restricted to the general public? ® ❑ ❑
El
Is the inspector granted access to all areas for inspection? ® ❑ ❑
Comment: Permittee has submitted renewal to the Raleigh office.
Record Keeping Yes No NA NE
Are records kept and maintained as required by the permit? ® ❑ ❑ ❑
Is all required information readily available, complete and current? ® ❑ ❑ ❑
Are all records maintained for 3 years(lab. reg.required 5 years)? ® ❑ ❑ ❑
Are analytical results consistent with data reported on DM Rs? ❑ ❑ ■ ❑
Is the chain-of-custody complete? ® ❑ ❑ ❑
Dates, times and location of sampling ❑
Name of individual performing the sampling
Results of analysis and calibration ❑
Dates of analysis
Name of person performing analyses ❑
Transported COCs
Are DMRs complete:do they include all permit parameters? ❑ ❑ ® ❑
Has the facility submitted its annual compliance report to users and DWQ? ❑ ❑ ®'
El
(If the facility is=or>5 MGD permitted flow)Do they operate 24/7 with a'certified operator ❑ ❑ ■ ❑
on each shift?
Is the ORC visitation log available and current? ❑ ❑ ® ❑
Is the ORC certified at grade equal to or higher than the facility classification? ❑ ❑ ® ❑
Is the backup operator certified at one grade less or greater than the facility classification? ❑ ❑-
is a copy of the current NPDES permit available on site? ® ❑ ❑ ❑
Page# 3

Permit: NCG500102 Owner-Facility: Bridgewater Hydroelectric Station
Inspection Date: 06/22/2015 Inspection Type: Compliance Evaluation
Record Keeginq Yes No NA NE
Facility has copy of previous year's Annual Report on file for review? ❑ ❑ ® ❑
Comment: Records were readily available and organized
Field instrumentation used is a Hydrolab and appeared to be properly calibrated and
documented.
Laboratory Yes No NA NE
Are field parameters performed by certified personnel or laboratory? ® ❑ ❑ ❑
Are all other parameters(excluding field parameters)performed by a certified lab? ® ❑ ❑ ❑
#Is the facility using a contract lab? ❑ ® El ❑
#Is proper temperature set for sample storage(kept at less than or equal to 6.0 degrees ® ❑ ❑ ❑
Celsius)?
Incubator(Fecal Coliform)set to 44.5 degrees Celsius+/-0.2 degrees? ❑ ❑ ■ El
Incubator(BOD)set to 20.0 degrees Celsius+/-1.0 degrees? ❑ ❑ ® ❑
Comment: Duke Energy operates a certified lab in Huntersville NC
Flow Measurement-Effluent Yes No NA NE
#Is flow meter used for reporting? ❑ 0 n ❑
Is flow meter calibrated annually? ❑ ® ❑
Is the flow meter operational? ❑ ❑ ® ❑
(If units are separated)Does the chart recorder match the flow meter? ❑ ❑ ® ❑
Comment: Flow is estimated based on the facility's megawatts
Effluent Sampling Yes No NA NE
Is composite sampling flow proportional? El El 0 El
Is sample collected below all treatment units? ® El' ❑ [�
Is proper volume collected? ■ El ❑ ❑
Is the tubing clean?
#Is proper temperature set for sample storage(kept at less than or equal to 6.0 degrees ® ❑ ❑'
Celsius)?
Is the facility sampling performed as required by the permit(frequency,sampling type ® ❑ ❑ 11
representative)?
Comment: Effluent sampling is performed at denoted locations in the Duke Energy
Environmental
Monitoring Plan. It is also performed on a quarterly basis
Effluent Pipe Yes No NA NE
Is right of way to the outfall properly maintained? ® ❑ El ❑
Page# 4

Permit: NCG500102 Owner-Facility: Bridgewater Hydroelectric Station
Inspection Date: 06/22/2015 Inspection Type: Compliance Evaluation
Effluent Pipe Yes No NA NE
Are the receiving water free of foam other than trace amounts and other debris? = ® ❑ ❑ ❑
If effluent (diffuser pipes are required) are they operating properly? ❑ ❑ ® ❑
Comment:
Upstream/Downstream Sampling Yes No NA NE
Is the facility sampling performed as required by the permit(frequency,sampling type, and ® ❑ ❑ ❑
sampling location)?
Comment: Duke Energy is performing U/D sampling on a quarterly basis.
Page# 5

410 S Wilmington St.
Raleigh NC 27601
KV Mailing Address
PO Box 1551
Raleigh NC 27602
January 26, 2015
Mr. John Hennessy
Division of Water Resources
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
Blewett Falls Hydroelectric Plant— NCG500190
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
Marshall Hydroelectric Plant—NCG500591
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
Tillery Hydroelectric Plant— NCG500189
Tuckasegee Hydroelectric Plant—NCG500126
Tuxedo Hydroelectric Plant—NCG500110
Walters Hydroelectric Plant—NCG500188
Dear Mr. Hennessy:
Duke Energy requests the subject general permit be renewed and reissued. The above referenced
permit expires July 31, 2015. 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 one original and one copy of the Notice of Renewal Intent for each of the
hydroelectric faclltles named above:
Duke Energy 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(919) 546-7457.
Sincerely,
Stephen G. Cahoon
Senior Environmental Specialist
Attachments

NCDENR
North Carolina Department.of Environment and Natural Resources
Division of Water Resources
Pat McCrory Thomas A. Reeder John E. Skvarla, III
Governor Director Secretary
NOTICE OF RENEWAL INTENT
[Required by 15A NCAC 02H.0127(d)1; [term definition see 15A NCAC 02H.0103(19)]
Application for renewal of existing coverage under General Permit NCG500000
Existing Certificate of Coverage(CoQ: NCG500102
(Press Tab to navigate form)
1) Mailing address of facility owner/operator: (address to which all correspondence should be mailed)
Company Name Duke Energy Carolinas,LLC
Owner Name Steve Cahoon
Street Address 410 S.Wilmington St.
City Raleigh State NC ZIP Code 27601 -
Telephone# [phone] Fax# [phone]
Email Address [e-mail]
2) Location of facility producing discharge:
Facility Name Bridgewater Hydroelectric Station
Facility Contact Nob Zalme
Street Address 5790 Power House Road
City Morganton State NC ZIP Code 28655-
County Burke
Telephone# [phone] Fax# - -
Email Address [e-mail]
3) Description of Discharge:
a) Is the discharge directly to the receiving stream?
® Yes
❑ No—Please 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):
Four
Pagel of 3

NCG500000 Renewal Application
c) What type of wastewater is discharged?Indicate which discharge points, if more than one.
® Non-contact cooling water Outfall(s)#: 001,002,003,004
❑ Boiler Blowdown Outfall(s)#:
❑ Cooling Tower Blowdown Outfall(s)#:
❑ Condensate OutfalI(s)#:
® Other Outfall(s)#: 004
(Please describe"Other"): Station sump,which includes powerhouse drainage and non-contact
cooling water.
d) Volume of discharge per each discharge point(in GPD):
#001: 72,000 GPD #002: 72,000 GPD #003:21,600 GPD #004: 25,920 GPD
4) Please check the type of chemical[s] added to the wastewater for treatment,per each separate discharge
point(if applicable, use separate sheet):
❑Chlorine ❑Biocides ❑Corrosion inhibitors ❑Algaecide ❑Other ®None
If any box other than None is checked,a completed Biocide 101 Form and manufacturers'information on the
additive must be submitted to the following address for approval:
NC DENR/DWR/Environmental Sciences Section
Aquatic Toxicology Unit
1621 Mail Service Center
Raleigh,NC 27699-1621
5) Is there any type of treatment being provided to the wastewater before discharge?(i.e., retention ponds,
settling ponds, etc.)
❑ 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.
® No
6) Discharge Frequency:
a) The discharge is: ® Continuous ❑ Intermittent ❑ Seasonal
i) If the discharge is intermittent,describe when the discharge will occur:
ii) If seasonal,check the month(s)the discharge occurs:
❑Jan ❑Feb ❑Mar. ❑Apr ❑May ❑Jun ❑Jul ❑Aug. ❑ Sept. ❑Oct. ❑Nov. ❑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.
Page 2 of 3

NCG500000 Renewal Application
Additional Application Requirements:
The following information must be included in duplicate [original+ 1 copy] 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, per 15ANCAC 02H.0138(b)(1).
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: Randy C.Herrin Title: GM III Regional Fleet
(Please review 15A NCAC 02H.0106(e)for authorized signing officials)
r Click//5ee�%r date.
Signature of Appl ant Date Signed
North Carolina General.Statute§ 143-215.613 provides that:
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 this Article or a rule implementing this
Article; or who knowingly makes a false statement ofa material fact in a rulemaking proceeding or contested case
under this Article;or who falsifies,tampers with,or knowingly renders inaccurate any recording or monitoring device
or method required to be operated or maintained under this.Article or rules of the Commission implementing this
Article,shall be guilty of a. Class 2 misdemeanor which may include a fine not to exceed ten thousand dollars
($10,000). 18 U.S.C. Section 1001 provides a punishment by a fine 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 one copy of the entire package to:
NC DENR/DWR/Water Permitting Section
1617 Mail Service Center
Raleigh,North Carolina 27699-1617
Attn: Charles Weaver
Page 3 of 3

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United States Environmental Protection Agency Form Approved.
C /� Washington,D.C.20460 OMB No.2040-0057
C /`1 Water Compliance Inspection Report Approval expires8-31-98
Section A:National Data System Coding(i.e.,PCS)
Transaction Code NPDES yr/mo/day Inspection Type Inspector Fac Type
1 IN I 2 15 I 3 I NCG500102 I11 12 15/06/03 17 18 I C f 19' S I 20 Lj
21III1 I I I I I I1I 1j l I I I I I I I I I I I I I I I I I I I III I I I I I 6
Inspection Work Days Facility Self-Monitoring Evaluation Rating B1 QA ------------------Reserved------------
67 70 Lj 71 I f 72 NJ 73 I I 174 ,751 11 I 1 1 1 180
Section B:Facility Data
Name and Location of Facility Inspected(For Industrial Users discharging to POTW,also include Entry Time/Date Permit Effective Date
POTW name and NPDES permit Number) 10:OOAM 15/06/03 12/08/03
/ Bridgewater Hydroelectric Station
Exit Time/Date Permit Expiration Date
R 5790 Power House Rd
11:30AM 15/06/03 15/07/31
Morganton NC 28655
Name(s)of Onsite Representative(s)/Titles(s)/Phone and Fax Number(s) Other Facility Data
///
Name,Address of Responsible Official/Title/Phone and Fax Number
Contacted
Mike Lail,5790 Power House Rd Morganton NC 28655//828-391-6740/
No
Section C:Areas Evaluated During Inspection(Check only those areas evaluated)
Permit 0 Flow Measurement Operations&Maintenance Records/Reports
Self-Monitoring Program E Facility Site Review Effluent/Receiving Waters Laboratory
Section D:Summary of Finding/Comments(Attach additional sheets of narrative and checklists as necessary)
(See attachment summary)
Name(s)and Signature(s)of Inspector(s) Agency/Office/Phone and Fax Numbers Date
Linda S Wiggs ARO WQ//828-296A500 Ext.4653/
Signature of Management Q A Reviewer Agency/Office/Phone and Fax Numbers Date
EPA Form 3560-3(Rev 9-94)Previous editions are obsolete.
Page# 1

NPDES yr/mo/day Inspection Type
31 NCG500102 h 12 15/06/03 17 18 1,1
t—r
Section D:Summary of Finding/Comments(Attach additional sheets of narrative and checklists as necessary)
1 \
/' �`�
z �J4
\j
� '►ti.�- #�—� � Page# 2

Permit: NCG500102 Owner-Facility: Bridgewater Hydroelectric Station
Inspection Date: 06/03/2015 Inspection Type: Compliance Evaluation
Operations & Maintenance Yes No NA NE
Is the plant generally clean with acceptable housekeeping? ❑ ❑ ❑ ❑
Does the facility analyze process control parameters,for ex: MLSS, MCRT, Settleable ❑ ❑ ❑ ❑
Solids, pH,DO,Sludge Judge, and other that are applicable?
Comment:
Permit Yes No NA NE
(If the present permit expires in 6 months or less). Has the permittee submitted a new ❑ ❑ ❑ ❑
application? Y
Is the facility as described in the permit? / ❑ ❑ ❑ ❑
#Are there any special conditions for the permit? ❑ ❑ ❑ ❑
Is access to the plant site restricted to the general public'?, ❑ ❑ ❑ ❑
Is the inspector granted access to all areas for inspection? ❑ ❑ ❑ ❑
Comment:
Record Keeping Yes No NA NE
Are records kept and maintained as required by the permit? ❑ ❑ ❑ ❑
Is all required information readily available, complete and current? ❑ ❑ ❑ ❑
Are all records maintained for 3 years(lab. reg. required 5 years)? +f ❑ ❑ ❑ ❑
Are analytical results consistent with data reported on DMRs? ' ❑ ❑ ❑ ❑
Is the chain-of-custody complete? Tom' ❑ ❑ ❑ ❑
Dates,times and location of sampling / ❑
Name of individual performing the sampling ❑
Results of analysis and calibration ❑
Dates of analysis ❑
Name of person performing analyses ❑
Transported COCs ❑
Are DMRs complete:do they include all permit parameters? ❑ ❑ ❑ ❑
Has the facility submitted its annual compliance report to users and DWQ? ❑ ❑ ❑ ❑
(If the facility is=or>5 MGD permitted flow)Do they operate 24/7 with a certified operator ❑ ❑ ❑ ❑
on each shift?
Is the ORC visitation log available and current? ❑ ❑ ❑ ❑
Is the ORC certified at grade equal to or higher than the facility classification? ❑ ❑ ❑ ❑
Is the backup operator certified at one grade less or greater than the facility classification? ❑ ❑ ❑ ❑
Is a copy of the current NPDES permit available on site? ❑ ❑ ❑ ❑
f.,
Page# 3

Permit: NCG500102 Owner-Facility: Bridgewater Hydroelectric Station \\
Inspection Date: 06/03/2015 Inspection Type: Compliance Evaluation
Record Keeping Yes No NA NE
Facility has copy of previous year's Annual Report on file for review? ❑ ❑ ❑ ❑
Comment:
Laboratory Yes No NA NE
Are field parameters performed by certified personnel or laboratory? ❑ ❑ ❑ ❑
Are all other parameters(excluding field parameters)performed by a certified lab? ❑ ❑ ❑ ❑
#Is the facility using a contract lab? /V.17 ❑ ❑ ❑ ❑
#Is proper temperature set for sample storage(kept at less than or equal to 6.0 degrees ❑ ❑ ❑ ❑
Celsius)?
Incubator(Fecal Coliform)set to 44.5 degrees Celsius+/-0.2 degrees? ❑ ❑ ❑ ❑
f�.
Incubator(BOD)set to 20.0 degrees Celsius+/-1.0 degrees? ❑ ❑ ❑ ❑
Comment:
Flow Measurement- Effluent Yes No NA NE
#Is flow meter used for reporting? ❑ ❑ ❑ ❑
Is flow meter calibrated annually? ALA ❑ ❑ ❑ ❑
Is the flow meter operational? A� '. ❑ ❑ ❑ ❑
(If units are separated) Does the chart recorder match the flow meter? ❑ ❑ ❑ ❑
Comment:
Effluent Samplingg ° o� Yes No NA NE
Is composite sampling flow proportional? �15 ❑ ❑ ❑ ❑
Is sample collected below all treatment units? ❑ ❑ ❑ ❑
Is proper volume collected? t'j j-ry L ❑ ❑ ❑ ❑
Is the tubing clean? •J ❑ ❑ ❑ ❑
#Is proper temperature set for sample storage(kept at less than or equal to 6.0 degrees ❑ ❑ ❑ ❑
Celsius)? e
Is the facility sampling performed as required by the permit(frequency, sampling type ❑ ❑ ❑ ❑
representative)?
Comment:
Effluent Pipe Yes No NA NE
Is right of way to the outfall properly maintained? ❑ ❑ ❑ ❑
Are the receiving water free of foam other than trace amounts and other debris? ❑ ❑ ❑ ❑
Page# 4

Permit: NCG500102. Owner-Facility: Bridgewater Hydroelectric Station
i inspection Date: 06/03/2015 Inspection Type: Compliance Evaluation
Effluent Pipe Yes No NA NE
If effluent (diffuser pipes are required) are they operating properly? ❑ ❑ ❑ ❑
Comment:
Upstream/ Downstream Samplinq Yes No NA NE
Is the facility sampling performed as required by the permit(frequency, sampling type, and ❑ ❑ ❑ ❑
sampling location)?
Comment: ..M
Page# 5
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Duke CORPORATE EHS SERVICES
drEnergy0 Duke Energy Corporation
526 South Church St.
Charlotte, NC 28202
Mailing Address:
EC13K/PO Box 1006
Charlotte, NC 28201-1006
December 3, 2007
Mr. Keith Haynes
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
Asheville Regional Office
2090 U.S. Highway 70
Swannanoa, North Carolina 28778
Subject: Duke Energy Carolinas, LLC—Environmental Monitoring Plan
North Carolina Hydroelectric Facilities
Dear Mr. Haynes:
As requested by your office, please reference the attached Environmental Monitoring Plan for the
fifteen Duke Energy hydroelectric facilities.
This plan provides the site descriptions, monitoring schedules and procedures, data management
and sampling locations.
Thank you for your assistance on this matter. If clarifications are needed, please contact me at(704)
382-4309.
Sincerely,
Fp
Allen Stowe I DEC — 4 2007 t. a
Water Management
C}UI�LkT`I z, TION
WATER n,,t -ram=ICE
A�4,r»IL.I E Rt �� ..
www.duke-energy.com

j I
Duke Energy Carolinas, LLC
North Carolina Hydroelectric Station NPDES
Environmental Monitoring Plan
e
Duke Energy
Corporate EHS Services
Revision 1
November 30, 2007

Introduction
This document details the applicable environmental monitoring plan for each of the fifteen
Duke Energy hydroelectric facilities located within the state of North Carolina and covered
under NC Department of Environment and Natural Resources(NCDENR) General National
Pollution Discharge Elimination System(NPDES)Permit NCG500000.
Site Descriptions
Broad River Basin
Outfall Location Site
Station NPDES No. Outfall Latitude Longitude Details
N W (Appendix)
Tuxedo NCG500110 001 35° 14'43" 82° 23'23" A-1
Catawba River Basin
Outfall Location Site
Station NPDES No. Outfall Latitude Longitude Details
N W (Appendix)
Bridgewater NCG500102 001 350 44' 35" 810 50' 13" A-2
Rhodhiss NCG500108 001 35' 46'28" 810 26' 15" A-3
Oxford NCG500119 001 35'49' 17" 81° 11'31" A-4
Lookout Shoals NCG500120 001 350 45'26" 810 05'21" A-5
Cowans Ford NCG500139 001 350 26'04" 800 57' 33" A-6
Mountain Island NCG500131 001 35° 20'03" 80° 59' 12" A-7
Little Tennessee River Basin
Outfall Location Site
Station NPDES No. Outfall Latitude Longitude Details
N W (Appendix)
Tennessee Creek NCG500123 001 350 13' 10" 830 01'01" A-8
Bear Creek NCG500124 001 35' 14'30" 83` 04'22" A-9
Cedar Cliff NCG500125 001 35° 15'09" 83°05'59" A-10
Tuckasegee NCG500126 001 35' 14'52" 83'07'42" A-11
Thorpe NCG500127 001 35° 14'04" 830 07'30" A-12
Mission NCG500128 001 350 03'54" 830 55'33" A-13
Bryson NCG500129 001 35' 26'45" 83°22'29" A-14
Nantahala NCG500136 001 350 16'20" 830 40'31" A-15
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Monitoring Procedures
Monitoring at each facility shall be conducted only when hydroelectric generation is
occurring. Samples and in situ measurements are to be collected from designated sites,
described herein, which will provide a characterization of effluent and receiving stream water
quality.
All field and laboratory methods shall conform to techniques approved for NPDES reporting,
and be performed by qualified personnel associated with a NCDENR-certified laboratory.
Temperature and pH are to be measured on site (see Appendices 1 through 15 for more
detailed description of specific sampling sites)utilizing a calibrated Hydrolab DataSonde°
(Duke Energy EHS Services Procedure 3210-2, or subsequent approved revisions). As
specified in the instrument operational procedure,both the temperature and pH measuring
subsystems are to be calibrated using National Institute of Standards and Technology(NIST)
references (i.e.,NIST-certified precision thermistor, and NIST-certified pH buffer solutions).
Where practical from both logistical and safety perspectives,measurements will be collected
in situ,with instrument sensors placed within the effluent stream or waterbody at a depth of
0.3 meters(approximately 1 ft). In situations where in situ instrumentation cannot be
deployed due to site-specific logistical or safety constraints,temperature and pH will be
measured from a surface grab sample (exceeding a 4-liter volume) collected with a clean
stainless steel bucket or other suitable device. Under this exception, temperature and pH[
measurements shall be made immediately after the sample is drawn.
Effluent samples to be collected for laboratory analyses shall be obtained following
applicable practices detailed in Duke Energy EHS Services Procedures 3290-1 and 3295-1,
or subsequent approved revisions. Samples for laboratory analyses of oil and grease are to be
collected from the air-water interface so as to capture any potential surface film. Oil and
grease samples shall be collected in glass containers with Teflon-lined lids, acid-preserved
(H2SO4 to<pH 2) and iced(<4°C)on-site immediately following collection. Oil and grease
shall be analyzed by EPA method 1664A for hexane extractable material, or comparable
alternate method(s) as specified under NPDES regulations and/or NCDENR implementation
guidance.
Data Management
Field data shall be recorded at the time determinations are performed directly on project-
specific field sheets(Appendix A16), or optionally recorded in an electronic form on a laptop
computer(Appendix A17). Station-specific hydroelectric combined flow coinciding at the
time of sampling shall be recorded on field records for the sampling date/time. Sample
chain-of-custody records shall be completed at the time of sample collection, as detailed in
Duke Energy EHS Services Procedure 3290-1,or subsequent approved revisions. Original
4

documents related to field and laboratory records shall be retained by Duke Energy for a
period of not less than five years.
References
American Public Health Association; American Water Works Association; Water
Environment Federation. 1998. Standard methods for the examination of water and
wastewater. 20tn Edition. American Public Health Association,Washington DC.
Duke Power. 2004. Safe work practices manual. Rev. October 2004. Available via intranet
at hlW:Hdewww/groggehs/SafeWorkPractices.pdf.
Duke Energy. 2005. Procedure 3210.2: Operating procedure for the Hydrolab water quality
analyzers. Duke Energy Corporate EHS Services. 24 pp.
. 2005. Procedure 3290.1: Surface water grab sample collection and custody.
Duke Energy Corporate EHS Services. 18 pp.
. 2005. Procedure 3295.1: Quality assurance for surface water quality sampling
programs. Duke Energy Corporate EHS Services. 8 pp.
Hach Company, 2006. Hydrolab DSSX, DS5, and MS5 water quality multiprobes user
manual. February 2006, Edition 3. 73 pp.
Hydrolab Corporation. 1995. DataSonde® 3 Multiprobe logger operating manual. Revision
H, April 1995. Hydrolab Corp., Austin TX.
Hydrolab Corporation. 1998. DataSonde®4 and MiniSonde water quality multiprobes user's
manual. Revision E, April 1998. Hydrolab Corp.,Austin TX.
U.S. Environmental Protection Agency. 1983. Methods for the chemical analysis of water
and wastes. Environmental Monitoring and Support Lab, Office of Research and
Development. Cincinnati, OH.
. 1996. Environmental investigations standard operating procedures and quality
assurance manual. May 1996. USEPA Region 4, Athens GA.
U.S. Government Printing Office. 1998. Code of Federal Regulations. Part 136 -
Guidelines establishing test procedures for the analysis of pollutants. § 136.3
Identification of test procedures. National Archives and Records Administration,
Washington, D.C.
5

Appendices A-1 through A-17
6

Appendix A-1
TOPO!map printed on 09/10/07 from"North Garotina,tpo"and"UnUtled.tpg"
82°25'00"W 82°24'00"W WGS84 82°23'00"W
o u ---.' " o i o
0 a
m Tuxedo Hydro Station
M; NPDES No.: NCG500110 M
Outfall 001 $ `"
� o
ry
Sampling Waypoint:
N: 350 14'43" '
W: 82' 23'23" 'Sfi
y
SY
W.,
.x
Tm
?4.
i sample. a
poino
a,
t
r
7 A. _
a z
s ss
o
L°n �°, M
tap V
eEtiy a
82-25'00"W �. 82-24'00"W nun WGS84 82-23'00"W
6' r�000 FEET 0 '.00 t000 N11Ef1S
IbFc tedwi&TOPOIS C.IWI riaaaT Gwp-pb-(aysz. 'topO)
7

Appendix A-2
TOPO!map printed on 09/10/07 from"North Carolina.tpo"and"Untitied.tpg"
81152'00"W 81°51'00"W 81°5000 W WGS84 81°49'00"W
z
Z _
O ✓ O
Bridgewater Hydro Station N
NPDES No.: NCG500102 M
T Outfall 001
r K Sampling Waypoint:
N: 35' 44'35tt
k W: 81° 50' 13"
MA
P
t
y l
z
s
' u
}( 0
.,r' qf1 rib., to
r {} j
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z ys z
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In
81'S2'00"W 81*51400,W a 581°50100"W tME WGS84 81°49'00"W
,6-
6`,"� 0 IOW FEET O 500 tODD NE(fAS .
Niv ct.tsdaih TOM!*tml NAWW GO.P0.t acariaaatae°gapp7t -man tq.)
g

Appendix A-3
TOPOI map printed on 09/10/07 from"North Carolina.tpo"and"Untitled.tpg"
81127'00"W 81'26'00"W WGS84 81°2S'00"W
Z Z
in G r Rhodhiss Hydro Station M
NPDES No.: NCG500108
Outfall 001
Sampling Waypoint:
N: 350 46`28"
W: 81° 26' 15"
Z
N 4 M
r,
ri
Y
Pp
O ~S` x O
O N
th
IL
Z 'x _
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6
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81127'00"W n 81-26'00"W a�tE WGS84 81°25'00"W
aav
�000 FEET 0 500 1000 tdEifXS
lfapz tad with TOPOE't C1.001 Nat.W C—Mhx(a^as eaciooat3 �P - `!MM)
9

Appendix A-4
TOPOi map printed on 09/10/07 from"North Carolina.tpo"and"Untitled.tpg"
81°13'00"W 81°12'00"W 81,11,00"W WGS84 8 1110'00'W
NJ
G Yy Oxford Hydro Station v;
NPDES No.: NCG500119 ' Z
t`
Outfall 001
Ln
M /` � r' Sampling Waypoint:
N: 35 49 17
'� 't�s I 1 ��\7; �� )�1� ie%�\,�YYY �• tt �? t� / /'_:.A �:x ,J"(n�\�����`�. ' q� n
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v
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point
JiJ t.
1 `"�, s C 1 `•-' ter. ✓,>" t : } `v�f ,i 4 �•.�.
m
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4 4.
81-13*00"W' 81*12'00"W s 81-11,000"W WG584 81°10'00"W
Li^ N
{y1� �Mo FEET FOOD PAUFFIS
eapMF�d�itntogoM=01x. c_oo�E-<,��^.=5�. `-�OPO)
10

Appendix A-5
TOPOI map printed on 09/10/07 from"North Carolina.tpo"and"Untitled.tpg"
81106'00"W WOW"W 81*04'00"W WG584 81°03'00"W
it
Z, 0 HOALS
liAkeki }4 , o
o �` o 10
e2ere3s
Ln
97 In
r ! `~J
L
�.YO!lOYL a!T LEIO(i.
}
Lookout Shoals Hydro StationLn
m NPDES No.: NCG50012001cn
Outfall 001
kA
Sampling Waypoint:
N: 350 45'26" 0 J�
W: 81 05 21 �-
Z t` 1s rt Z
- 211Ln
Z €� G Z
f 3
Ln
f IV
s
81°06'00"W o 81°05400 SW FREE 81*04'00'W WGSM 81103'00"W
tivsv
0 100f1 FEEL 0 500 1000 RdEmS
11

Appendix A-6
TOPO!map printed on 09/10/07 from"North Carolina.tpo"and"Untitled.tpg"
W59'00"W 80'S8'00"W 80^57'00"W WGS84 80°S6'00"W
bu
N C>$$IC< N
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ez
Ln
Xf
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" - s
� A
O iD
N
N Cowans Ford Hydro Station m
NPDES No.: NCG500139
Outfall 001
Sampling Waypoint:
N: 350 26'04" �.
W: 80' 57'33°
a
Z 001Discharge.,. r � e Z
in
0 Pt T)j c"rh� Fi d
ry r
n
poop
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a? o low HET o sm ,00naEras
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12

Appendix A-7
TOPO!map printed on 09/10/07 from"North Carolina.tpo"and"Untit!edapg"
81*00.00"W 80°59100"w 80°58100"W WG584 80057'00"W
o •$$ o
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t t
C f r �.sf, N
N 4� l
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s NPDES No.: NCG500131
.fit Outfall 001
o t,^ l Sampling Waypoint:
0
Fzri�.
N: 35' 20'03"
jn
M s W:80' 59' 12" M
i �� _
.f
t it
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o
ro
Ln
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a s tM
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Map—d-&TOPOEB C001 Vatimml C—gVhic(autc.natiooatemgapirin;,.:,om tapo)
13

Appendix A-8
TOPO!map printed on 09/07/07 from"North Carolina.tpo"and"Untltled.tpg"
83-01*00'W 83°00'00"W WGS84 82°59'00"W
Tennessee Creek Hydro Station Q �� ���, A
NPDES No.: NCG500123
Outfall001
Z Sampling Waypoint: {
o "!
o 0
N: 35' 13' 10" o
W: 83'01'01"
Ln
cn
1
_ M
4
z
<+ ,
o r f O
Ln
(dam
i,
Upstream
w•
DownstreamZ
Z
o . sample
point
i
83101°00"W 83°00'00"W WGS84 82159'00"W
5 1 Aglf
6'}l 0 1006 FEET 0 509 I=tdEIEtS
yl xupa aw,th OPO!'a Z:,001 Mbm dGamSwhl (wuanaWMtFovvhc wpo7
14

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Outfall 11
Sampling Waypoint:
1{
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1
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Appendix A-10
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83107'00"W 83°06'00"W WGS84 83°OS'00"W
r
o
N � �fit=' c ., '•^ (
M
y �
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zo
Ln
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a -
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Cedar Cliff Hydro Station
m
NPDES No.: NCG500125 m
Outfall001T _ }
Sampling Waypoint: --
N: 35' 15'09"
W: 83' 05' 59"
Alf
Discharge ®®
01
83°0T00"W 83°06'00'W WGS84 83°05'00'W
i'l,' 0 t000 fEE7 0 SOU Iwo NETERC
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16

Appendix A-11
TOPO!map printed on 09/07/07 from"North Carolina.tpo"and"Untitled,tpg"
83110'00"W 83'09'00"W 83°08'00"W WGS84 83°07'00"W
z z
N
Uf
} t
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o
Tuckasegee Hydro Station
z NPDES No.: NCG500126
o
Outfall 001 F
M Sampling Waypoint: Ln
N: 35' 14'52"
Q t W: 830 07'42"
Zr z
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Z `R �+"1 z
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17

Appendix A-12
TOPO!map printed on 09/07/07 from"North Carolina.tpo"and"Untitled.tpg"
83110'00"W 83109'00"W WGS84 83108'00"W
Thorpe Hydro Station
NPDES No.: NCG500127 i , -
Outfall 001 a
Z „ ° Sampling Waypoint: �` �. ,
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Z
N: 35° 14'04" o
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Map—ted,ith TOPO&4100117.6 dC,.pphie(ww,cnn[ionstgeogapLie.-o P.)
18

Appendix A-13
TOPO!map printed on 09/07/07 from"North Carolina.tpo"and"Unt!ded.tpg"
83°57'00"W 83°56'00"W 83'SS'00"W WGS84 83°S4'00"W
Z +(�- - Z.
Mission Hydro Station o
7 t_1 NPDES No.: NCG500128 .0
M • ; r ,- " [A
Outfall 001
w
• - „ ;� Sampling Waypoint:
•• N: 35' 03' 54"
W: 83' 55' 33"
t
m a. �4, ,, rf Ln
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z
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19

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0,4111111
V ' x

Appendix A-15
TOM map printed on 09/10/07 from"North Carohna.tpo"and"Untitled.tpg"
83°41'00"W 83140*00"W WGS84 83139'00"W
i
T 9
Nantahala Hydro Station
NPDES No.: NCG500136
Outfall 001 Z
ITE
Sampling Waypoint: o
° N: 35 16'20"
Ln
m W: 83°40'31" "
Q
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sample
point
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21

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23

Michael F. Easley,Governor
William G.Ross Jr.,Secretary
North Carolina Department of Environment and Natural Resources
Alan W.Klimek,P.E.Director
,al Division of Water Quality
Asheville Regional Office
SURFACE WATER PROTECTIONF f µ
February 20, 2007 Ir I L Emmj
Mr. Allen Stowe
Duke Energy Corporation
Mail Code EC13K
Post Office Box 1006
Charlotte, North Carolina 28201-1006
SUBJECT: Compliance Evaluation Inspection
Bridgewater Hydroelectric Station
Permit No: NCG500102
Burke County
Dear Mr. Stowe:
Enclosed please find a copy of the Compliance Evaluation Inspection form from
the inspection conducted on February 16, 2007. Mr. Keith Haynes, Ms. Starr Silvis and
of the Asheville Regional Office conducted the Compliance Evaluation Inspection. The
facility was found to be in Compliance with permit NCG500102.
Please refer to the enclosed inspection report for additional observations and
comments. If you or your staff have any questions, please call me at [phone].
Sincerely,
Lar Fr st
E ironmental Engineer
Enclosure
cc: Nob Zalme, Duke Power, 1555 Dukeville Road, Salisbury, NC 28146
Central Files
Asheville Files
NorthCarolina
Naturally
2090 U.S.Highway 70,Swannanoa, NC 28778 Telephone: [phone] Fax:[phone] Customer Service 1 877 623-6748

United States Environmental Protection.Agency Form Approved.
EPA Washington,D.C.20460 OMB No.2040-0057
Water Compliance Inspection Report Approval expires 8-31-98
Section A: National Data System Coding(i.e., PCS)
Transaction Code NPIDES yr/mo/day Inspection Type Inspector Fac Type
I 1"1 2 1 31 NCG5001.02 11 121 0",-/0 2 I.J 6, j 17 18LI 19 1 201_j
Remarks
211 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 161
Inspection Work Days I Facility Self-Monitoring Evaluation Rating BI QA -------------------------Reserved---------------------
671 169 701 1 71 Ll 72 Lj 73 Lj_j 74 751 1 1 1 1 1 L 80
Section B: Facility Data
Name and Location of Facility Inspected(For Industrial Users discharging to POTW,also include Entry Time/Date Permit Effective Date
POTW name and NPIDES, permit Number)
5:790 Power. House ?d Exit Time/Date Permit Expiration Date
R
morgan=n NC 2865 , .1:0110 AM 0,711012111E, G 7 -3 7/3 1
Name(s)of Onsite Representative(s)rrities(s)]Ph one and Fax Number(s) Other Facility Data
Name,Address of Responsible Offidal/Title/Phone and Fax Number
Contacted
ram:e, A!1.en S t awe,5 2 6 S Ch*u r ch St: Cha r I C,t e NC
Section C: Areas Evaluated During Inspection(Check only those areas evaluated)
Permit operations&Maintenance E Records/Reports ■Self-Monitoring Program
Facility Site Review
Section D: Summary of Find ing/Comments(Attach additional sheets of narrative and checklists as necessary)
(See aftachment summary)
Name(s)and Signature(s)of Inspector(s) Agency/Office/Phone and Fax Numbers Date
% PO -z- // ,v
o S I: A
-29'-4500'
K-.-d.tb. Hayri-S WQ 82 8
star" AR O cr--k-
Signature of Management Q A Reviewer Agency/Office/Phone and Fax Numbers Date
Roaear C Edward a '# ;�/:7 e
-V - ARO WQ/VV8-296-45�01/
EPA Form 3560-3(Rev 9-94)Previous editions are obsolete.
Page# 1

3 NPD 11 12 17 ES yr/mo/day Inspection Type (cont.)
I Cr i
I 1 181 Ll \\
Section D: Summary of Finding/Comments(Attach additional sheets of narrative and checklists as necessary)
Duke Energy's Bridgewater Hydroelectric Powerhouse consists of the Linville Dam, a short pinstock, the
powerhouse, powerhouse generation equipment, powerhouse sumps and tailrace. The tailrace discharges
to Linville River.The plant has permitted discharges of generator thrust bearing cooling water and
powerhouse sumps.
Mr. Keith Haynes, Ms. Starr Silvis and Mr. Larry Frost performed the inspection. The facility appeared to be
well maintained and operating properly. There were noun-permitted discharges noted during the inspection.
The purpose of the permit is to protect the receiving stream; therefore, the inspectors recommend that
Upstream. Effluent and Downstream sampling points be re-evaluated for this facility. The recommended
upstream sampling site is from the pinstock as it enters the powerhouse (the operators pointed out a hose
station that may serve this purpose), the effluent site would be from the cat walk over the tailrace and the
downstream at a dock (identified by the operators). It is recommended that these sites be established by
written policy.
Once the sampling sites are established, then the monitoring requirements and monitoring frequency for
each site should re-evaluated.All monitoring must be done when there is flow.
The proper reporting of flow from the powerhouse was discussed. The inspectors recorntrmend that Duke
Energy use common units of measure for this industry (examples discussed were; CFS and MGd, however
some other unit may be more appropriate)with regards to flow. If you should have any questions regarding
this issue please contact one of the inspectors.
Finally, thanks to Allen Stowe, Sam Powell, Donald Cressweil and Nob Zalme for their assistance during the
inspection.
Page# 2

j
Permit: NCG500102 Owner-Facility: Bridgewater Hydroelectric Station
,spection Date: 02/16/2007 Inspection Type: Compliance Evaluation
, er tion5&Maintenance Yes No NA NE
Is the plant generally clean with acceptable housekeeping? ■ 0 11
Does the facility analyze process control parameters,for ex: MLSS, MCRT,Settleable Solids, pH, DO,Sludge ❑ [1 ■ 0
Judge, and other that are applicable?
ColTirnnt:
_Permit_ Yes No NA NE
(If the present permit expires in 6 months or less). Has the permittee submitted a new application? ■ 0 0 ❑
Is the facility as described in the permit? ® C3 13 n
#Are there any special conditions for the permit? 0 ❑ ■ 0
Is access to the plant site restricted to the general public? ■ ❑ 0 0
Is the inspector granted access to all areas for inspection? ® ❑ I1
Comment-,
Page# 3

i
/1
FUR AGENCY USE ONLY
Date Received
Year Month Da
/ Division of Water Quality/Water Quality Section
a Certificate of Covera e
NCDENRNational Pollutant Discharge Elimination System N ChecCk# Amount
`c"TH C4Rc—(h*TwvfU w of'-
Fi+vnvnenFnT wn h�nrunv.wr.'o"�ea' Permit Assigned to
NCG500000
NOTICEPTA t
OF INTENT ky
National Pollutant Discharge Elimination System application for ove"tage_pnder General,Permit
NCG500000: Non-contact cooling water, boiler blowdown,cool t'ig tpwex:hlsiwdgWn,condensate,and
similar point source discharges
(Please print or type) i
I �
1) Mailing address*of owner/operator: 'i.I r MiAR '//��0�(�j
3 Ltl 12
Company Name Duke Energy Carolinas,LLC �
Owner Name Allen Stowe-Water Management
Street Address 526 South Church Street,Interoffice-EC13K
City Charlotte ti t6 N.C. ZIP'Code 28202
Telephone No. (704) 382-4309 Fax (tom Ns� 6&�
*Address to which all permit correspondence will be mailed
2) Location of facility producing discharge:
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: N/A _
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). 1-40 west of Morganton:Take Exit 94(Dysansville),turn right_
Go to NC 70,turn left,go approx 2 miles. Turn right on N Powerhouse Rd,turn 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: _
8 Renewal
Please specify existing permit number and original issue date: _
5) Does this facility have any other NPDES permits?
® 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 04105

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.
® Non-contact cooling water Discharge point(s)#: 001
❑ Boiler Blowdown Discharge point(s)#:
❑ Cooling Tower Blowdown Discharge point(s)#:
❑ Condensate Discharge point(s)#:
❑ Other Discharge point(s)#:
(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.:
® 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 ® 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 04105

NCG500000 N.O.I.
11) Discharge Frequency:
a) The discharge is: ® Continuous ❑ Intermittent ❑ Seasonalo
i) If the discharge is intermittent, describe when the discharge will occur:
ii) If seasonal check the month(s)the discharge occurs: ❑ Jan. ❑ Feb. ❑ Mar. ❑ Apr.
❑ May ❑ Jun. ❑ Jul. ❑ Aug. ❑ Sept. ❑ Oct. ❑ Nov. ❑ Dec.
b) How many days per week is there a discharge? Seven
c) Please check the days discharge occurs:
® Sat. ® Sun. iR Mon. ® Tue. ® Wed. iR Thu. 8 Fri.
12) Pollutants:
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

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N ®EH�
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H.Sullins Dee Freeman
Governor Director Secretary
January 19, 2010
Mr. Jon Wise, Project Director
Duke Energy Corporation
526 South Church St.
Charlotte,NC 28202
Subject: Bridgewater Hydroelectric Facility
Linville River/UT Catawba River(below Linville Dam)Cooling Water
Reference NPDES No.NCG500102
Burke County
Dear Mr. Wise:
The Division of Water Quality (Division)has received your request to reduce the daily temperature monitoring,
specified in the Division's letter dated November 16, 2009,to weekly. Duke Energy is currently using a portion
of Linville River(discharge below Linville dam)to provide cooling water for the new powerhouse construction,
as needed. This portion of Linville River is classified as WS-IV, Trout, as it takes on the classification of the
downstream water body,the Catawba River.
Duke Energy has consistently complied with the temperature standard for classified Trout waters, specified by
15A NCAC 2B .0211(3)0), as demonstrated by the data submitted to the Asheville Regional Office. The
Division concurs with Duke Energy's request and will allow Duke to reduce the monitoring to weekly(and
report to this office monthly).
If at any time during this short term project Duke Energy is noncompliant with the temperature requirement, or
if aquatic life is adversely affected,the discharge of the noncontact cooling water shall cease until corrective
measures are taken.
Should you have further questions or comments,please contact Susan A.Wilson at(828) 296—4500.
Sincerely,.
Rogdr C. Edwards, Regional Supervisor
Surface Water Protection
Asheville Regional Office
cc: Central Files
ARO File copy
S:\SWP\Burke\Wastewater\General\Non-contact NCG50\Bridgewater Power house Duke cooling water approval-mod 1 2010.doc
Location:2090 U.S.Highway 70,Swannanoa,North Carolina 28778 One
Phone:[phone]\FAX:[phone]\Customer Service:1-877-623-6748 1�T 1
Internet:www.newaterquality.org NorthCar olina
An Equal Opportunity\Affirmative Action Employer atur,111Y

d • •
NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Charles Wakild, P.E. Dee Freeman
Governor Director Secretary
August 3, 2012
Mr.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:
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.
Contact the Asheville Regional Office prior to any sale or transfer of the permitted facility.
Regional Office staff will assist you in documenting the transfer of this CoC.
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, _3
Original signed by John Hennessy
for Charles Wakild P.E.-
._
cc: Ahevle leg©i�al Office/Surface Watex Protection
�
_ .
l i
f
Vol
1617 Mail Service Center,Raleigh,North Carolina 27699-1617 One ,
512 North Salisbury Street,Raleigh,North Carolina 27604 N��lt,��lOrt11C�TQ1111a
Phone: [phone] I FAX [phone] I Internet:www.ncwaterquality.org //�
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 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

MAJOR PROJECTS-CAROLINAS
.juke � � U
Duke EnergyCorporation
Energy® � 526 South Church St.
Charlotte,NC 28202
MA R 2 2 2010 Bridgewater Site Mailing Address:
5657 Rays Dairy Ave
ew-m Morganton,NC 28655
Vll.�:TEA+,?JAL!TY SECTION
5 —ASHi" LE R-F-GIONAL OFFICE
March 18, 2010
To: Ms. Susan Wilson
NC DENR Division of Water Quality
Asheville Regional Office
2090 U.S. Highway 70
Swannanoa, NG 28778
Subject: Duke Energy Carolinas, LLC
Bridgewater Hydroelectric Facility
NPDES General Permit NCG500000
Certificate of Coverage NCG500102
Linville River Temperature Monitoring
Dear Ms. Wilson:
Attached you will find the updated Linville River temperature readings taken since
commencement of powerhouse construction using river water for concrete temperature
control. This report is through (March 18, 2010. There are no instances where operation
of the concrete thermal contrdl system had a detectable impact on river water
temperature. Note that the last system reading was taken on February 25, 2010. No
system operation has occurred since then. There is a possibility that the system will no
longer be required. If operation does resume, the required temperatures will be
recorded and forwarded to year office.
Should you have any further questions or comments, please contact me at (828) 391-
6754 or Allen Stowe at [phone].
Sincerely,
on Wise
Project Director
Duke Energy Carolinas, LLC
/jrw
xc: Allen Stowe— DEC
www.duke-energy.com

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MAJOR PROJECTS—CAROLINAS
.-A)uke
� Duke Energy Corporation
OEnerV
�7 526 South Church St.
Charlotte,NC 28202
Bridgewater Site Mailing Address:
5657 Ray's Dairy Ave
Morganton NC,28655 _,.....,„ _
January 22, 2010
1
To: Ms. Susan Wilson . G
NC DENR Division of Water Quality ��i �,
Asheville Regional Office '! N 2 8 2010 -
2090 U.S. Highway 70
Swannanoa, NC 28778 WATER r -,C,i. r r S -C T ION
F� 'r
Subject: Duke Energy Carolinas, LLC <-
Bridgewater Hydroelectric Facility "
NPDES General Permit NCG500000
Certificate of Coverage NCG500102
Linville River Temperature Monitoring
Dear Ms. Wilson:
Attached you will find the updated Linville River temperature readings taken since
commencement of powerhouse construction using river water for concrete temperature
control: This report is through January 22, 2010. There are no instances where
operation of the concrete thermal control system had a detectable impact on river water
temperature.
Note that on January 18 the river temperature was 1.1°C higher downstream than
upstream. The temperature of the discharged water from the thermal cooling system
was 0.2°C higher than the upstream river temperature. Therefore the change in river
temperature was not due to the thermal cooling system. It is likely because the
powerhouse was not operating and the ambient temperature was 11.7°C higher than
the river temperature.
Should you have any further questions or comments, please contact me at (828) 391-
6754 or Allen Stowe at [phone].
"In erely,
,r
n Wise
Project Director
Duke Energy Carolinas, LLC
/jrw
xc Allen Stowe-- DEC
www.duke-energy.com

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MAJOR PROJECTS—CAROLINAS
�. i
�Dube gRg Duke Energy Corporation
[I E/>t@I'9j/® P I ,i`j j 526 South Church St..
JA N' 1 1 2010 Charlotte,NC 28202
BW Project Mailing Address:
_ 5657 Rays Dairy Avenue
F,(.'.1, L`,i s r3 Morganton,NC 28655
January 8, 2010
To: Ms. Susan Wilson
NC DENR Division of Water Quality
Asheville Regional Office
2090 U.S. Highway 70
Swannanoa, NC 28778
Subject: Duke Energy Carolinas, LLC
Bridgewater Hydroelectric Facility
NPDES-General Permit NCG500000
Certificate of Coverage NCG500102
Linville River temperature monitoring
Request for data gathering frequency reduction
Dear Ms. Wilson:
Duke Energy Carolinas, LLC requests a reduction in the frequency of collecting and
submitting .Linville River temperature data required-by.use of the river water for new
construction concrete thermal control. Data collected and reported since October of
20fl9`supports this request by demonstrating no detectable impact to river
temperatures. Specifically, the request is to reduce data gathering to a minimum of once
per week during thermal-control system operation with the cumulative data submitted
monthly to your office.
As before, Duke will respond to variations that may be caused by the work. Should the
project detect a potential non-compliance either by temperatures or fish/aquatic life kill,
work will cease and corrective measures will be taken.
Should you have any further questions or comments, please contact me at (828)-391-
6754 or Allen Stowe at [phone].
Sincerely,
J'lv'
66 n Wise
Project Director
Duke Energy Carolinas, LLC;
xc: Allen Stowe — DEC
www iirrka-nnarov rnm

MAJOR PROJECTS—CAROLINAS
,A'Duke
e'Ener �+ Duke Energy Corporation
gy 526 South Church St.
Charlotte,-kc 28202
, ldgeivaterSBteYldihngAdressk t
.;. 5657 Rays Dairy Av
January8, 2010
J �... l
To: Ms. Susan Wilson
a
I JogN 1 1 2010
NC DENR Division of Water Qualityp
Asheville Regional Office �1/��,Lj rr SEC,10�4 E
2090 U.S. Highway 70
Swannanoa, NC 28778 =
Subject: Duke Energy Carolinas, LLC
Bridgewater Hydroelectric Facility
NPDES General Permit NCG500000
Certificate of Coverage NCG500102
Linville River Temperature Monitoring
Dear Ms. Wilson:
Attached you will find the updated Linville River temperature readings taken since
commencement of powerhouse construction using river water for concrete temperature
control. This report is through January-8, 20-10. There-are no instances where operation
of the concrete thermal control system had a detectable impact on river water
temperature.
Should-you have-any further questions or comments,-please contact me at (828) 391-
6754 or Allen Stowe at [phone].
S' cerely,
on Wise
Project Director
Duke Energy Carolinas, LLC
fjrw
xc: Allen Stowe— DEC
www.duke-energy.com

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December 30, 200
To: Ms. Susan Wilson
NC DENR Division ofWater Quality
Asheville Regional Office
2090 U.S. Highway 70
Swannanoa, NC 28778
Subject: Duke Energy Carolinas, LLC
Bridgewater Hydroelectric Facuity
NPDES Generat Permit NCG-00000
Certificate of Coverage NCG500102
Linville River Temperature Monitoring
Dear Ms.Wilson:
Attached you will find the updated Linville River temperature readings taken since
commencement of powerhouse construction using river water for concrete temperature
control. This report is through December 29, 2009. There are no instances where
operation of the concrete cooling system had a detectable impact on river water
temperature.
Should-you have any further questions or comments, please contact me at(828) 391-
6754 or Allen Stowe at [phone].
incerely,
Jn Wise
Project Director
Duke Energy Carolinas, LLC
/jrw
xc: Allen.Stowe---DEC
www.duke-energy.com
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d f
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..nuke Duke Energy Corporation
Energy I ,4 526 south Church St.
t 1',r Charlotte,NC 28202
Hill" Di L,, 2009
Mailing Address:
EC11X/P0 Box 1006
Charlotte,NC 28201-1006
I �i I�(: 7 .)'r T
9 r j= 1 iI ? IP i0 N;- 0 ;C;F
December 1, 2009
To: Ms. Susan Wilson
NC DENR Division of Water Quality
Asheville Regional Office
2090 U.S. Highway 70
Swannanoa, NC 28778
Subject: Duke Energy Carolinas, LLC
Bridgewater Hydroelectric Facility
NPDES General Permit NCG500000
Certificate of Coverage NCG500102
Linville River Temperature Monitoring
Dear Ms. Wilson: '
Attached you will find the cumulative daily Linville River temperature readings taken
upon commencement of powerhouse construction using river water for concrete
temperature control. This report is through November 25, 2009. There are no instances
of non-compliance during the period.
Should you have any further questions or comments, please contact me at (828) 391-
6754 or Allen Stowe at [phone].
Sincerely,
on Wise
Project Director
Duke Energy Carolinas, LLC
/j rw
xc: Allen Stowe — DEC
www.duke-energy.com

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� 7 (� MAJOR PROJECTS—CAROLINAS
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�V Energy® 526 South Church St.
i DEC 14 2009 t 1 a Charlotte,NC a oz
4, i
3 k Mailing Address:
ECIIX/Pa Box 1006
x VNA s E E l�r F„ _=ttL,L Charlotte,NC 28201-1 Q06
December 10, 2009s.,
To: Ms. Susan Wilson
NG DENR Division of Water Quality
Asheville Regional Office
2090 U.S. Highway 70
Swannanoa, NG 28778
Subject: Duke Energy Carolinas, LLC
Bridgewater Hydroelectric Facility
NPDES General Permit NCG500000
Certificate of Coverage NCG500102
Linville River Temperature Monitoring
Dear Ms_ Wilson:
Attached you will find the cumulative daily Linville River temperature readings taken
upon commencement of powerhouse construction using river water for concrete
temperature control. This report is through December 1-0, 2009. There are no instances
where operation of the concrete cooling system had a detectable impact on river water
temperature.
For clarity, the remarks column contains a pour number on the day it was placed. By
example, concrete pour 1 C was placed on 12/08/09. The follow-on daily readings
correlate-to the time during which the concrete temperature is increasing due to
hydration and the operation of the cooling system has the greatest potential to affect
river temperatures. Readings taken in this manner confirm that the cooling system has
negligible, if any, impact on river temperatures. The greatest single variable appears to
be ambient conditions For this reason there are days between pours where no data is
supplied.
Should you have any further questions or comments, please contact me at (828) 391-
6754 or Allen Stowe at [phone].
Sincerely,
W
n Wise'
Project Director
Duke Energy Carolinas, LLC
/jrw .
xc: Allen Stowe- DEC
www.duke-energy.com

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Alson, Susan A
From: Wise, Jon [[e-mail]]
Sent: Tuesday, November 24, 2009 4:14 PM
To: Stowe, Allen; Wilson, Susan A
Subject: Linville River Temperature Tracking
Attachments: Linville River Water Temp 11-24-09.xls
Attached is the spreadsheet showing temperature readings upstream and downstream in the Linville River before,
during, and after our concrete placements.You will note that the temperature effects on the river are negligible at
worst, undetectable at best.This was expected.
These two concrete placements have reached their peak temperatures of hydration and have begun falling.Also,these
represent what will likely be our worst case of temperature rise to manage. Please consider this data as worst case and
consider with us the need to continue monitoring Linville River.
I will follow this email with hardcopy by US Mail.
Jon Wise
Project Director
[phone]
1

NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H. Sullins Dee Freeman
Governor Director Secretary
November 16, 2009
Mr. Jon Wise, Project Director
Duke Energy Carolinas, LLC
EC I IX/P.O. Box 1006
Charlotte,NC 28201-1006
Subject: Bridgewater Hydroelectric Facility
Linville River/UT Catawba River (below Linville Dam) Cooling Water
Reference NPDES No. NCG500102
Burke County
Dear Mr. Wise:
The Division of Water Quality (Division) has reviewed Duke Energy's proposal to use a portion of Linville
River (discharge below Linville dam) to provide cooling water for the new powerhouse, as needed. This
portion of Linville River is classified as WS-IV, Trout, as it takes on the classification of the downstream water
body, the Catawba River. Duke Energy originally submitted this proposal September 13, 2009 and additional
information/clarification was submitted November 13, 2009.
The Division understands that Duke Energy will extract no more than 10%of the flow during the term of the
project, which is projected to last approximately twelve months. The extracted water will then be used as
noncontact cooling water to assist in cooling the concrete for the new powerhouse. Duke Energy plans to
comply with the temperature standard for classified Trout waters, as specified by 15A NCAC 2B .0211(3)0),
"the temperature for trout waters shall not be increased by more than 0.5 degrees C (0.9 degrees F) due to the
discharge of heated liquids,but in no case to exceed 20 degrees C (68 degrees F)." To ensure compliance with
this standard, Duke Energy will sample for temperature upstream and downstream of the cooling water
discharge on a daily basis (upstream at the existing powerhouse, downstream at the Powerhouse Road Bridge).
Duke Energy shall report this daily data to the Division on a weekly basis during the first month of discharge,
and monthly thereafter. Should data demonstrate continued compliance with the temperature standard, Duke
Energy may request a reduction in the monitoring.
If at any time during this short term project Duke Energy is noncompliant with the temperature requirement,or
if aquatic life is adversely affected, the discharge of the noncontact cooling water shall cease until corrective
measures are taken.
Location:2090 U.S.Highway 70,Swannanoa,North Carolina 28778 One Phone:[phone] FAX:[phone] Customer Service:1-877-623-6748 NofthCarot na
Internet:www.ncwaterquality.org
�aturallr�
An Equal Opportunity 1 Affirmative Action Employer

Mr.Wise
November 16,2009
Page 2 of 2
The Division approves the non-contact cooling water discharge,provided the stipulations above are met.
Should you have further questions or comments, please contact Susan A. Wilson at(828) 296 4500.
Sincerely,
A G.v�
Roger C. Edwards, Regional Supervisor
Surface Water Protection
Asheville Regional Office
cc: Central Files
ARO File copy
G:\WPDATA\DEMWQ\Burke\Bridgewater Power house Duke cooling water approval 11 2009.doc

MAJOR PROJECTS--CARS.
,eke ;
�� Duke Energy Corporation
A 2_ -
=ner y 526 South Church St.
J
Charlotte,NC 28202
n3� 0 Mailing Address:
EC11X/PO Box 1006
Charlotte,NC28201-1006
November 13, 2009
To: Ms. Susan Wilson
NC DENR Division of Water Quality
Asheville Regional Office
2090 U.S. Highway 70
Swannanoa, NC,28778
Subject: Duke Energy Carolinas, LLC
Bridgewater Hydroelectric Facility
NPDES General Permit NCG500000
Certificate of Coverage NCG500102
Use of cooling water from Linville River
Supplemental correspondence
Dear Ms. Wilson:
As you are aware, Duke Energy Carolinas, LLC is in the process of building a new
powerhouse for Bridgewater Hydro Station on Lake James. In a previous letter dated
September 14, 2009 the plan to use Linville River water for cooling was described as
well as the commitment to comply with previously communicated temperature limits and
avoidance of contact with fresh concrete.
It is acknowledged that though the river in the vicinity of the work is not classified, the
downstream classification of WS-IV Tr will be applicable. To further demonstrate our
compliance during this work Duke will perform monitoring and reporting of river
temperatures during active use of the river water for cooling. The project is set up and
will record temperatures of Linville River, one upstream and one downstream, to
monitor for and respond to variations that may be caused by the work. This data will be
compiled and reported weekly to your office for the first month of the work. After the first
month, the data will be reported monthly. Should the project detect a non-compliance
either by temperatures or fish/aquatic life kill, work will cease and corrective measures
taken.
www.duke-energy.com

-2-
Should you have any further questions or comments, please contact me at (828) 391-
6754 or Allen Stowe at [phone].
Sincerely,A
JonWise
Project Director
Duke Energy Carolinas, LLC
xc: Allen Stowe — DEC
Jason Isbanioly - HDR
Sincerely,
Jon Wise
Project Director
Hydro Major Projects

MAJOR PROJECTS—CAROLINAS
Duke
Energy® Duke Energy Corporation
526 South Church St.
PCharlotte,NC 28202
~>>
SEP 17 2009
" Mailing Address:
ECI1X/PO Box 1006
d— Y Charlotte,NC 28201-1006
WATER OUALITY SECTION
Aq�E �J L REGIONS OFFICE
ICE
September 14, 2009 m _. .._�...... ----
To: Ms. Susan Wilson
NC DENR Division of Water Quality
Asheville Regional Office
2090 U.S. Highway 70
Swannanoa,NC 28778
Courier 12-59-01
Subject: Duke Energy Carolinas, LLC
Bridgewater Hydroelectric Facility
NPDES General Permit NCG500000
Certificate of Coverage NCG500102
Use of cooling water from Linville River
Dear Ms. Wilson:
As you are aware, Duke Energy Carolinas, LLC is in the process of building a new
powerhouse for Bridgewater Hydro Station on Lake James to allow the old powerhouse
to be demolished prior to work on seismically stabilizing the dam. This construction will
involve mass pours of concrete which must be thermally cooled to prevent cracking. Our
engineering consultant(HDR)has previously contacted you requesting permission to
extract water from the Linville River down steam of the existing powerhouse to be used
as non-contact cooling water for this purpose.
The design of the Thermal Control Plan(TCP) calls for the between 1.5 and 2 cfs (cubic
feet-per- second)of cooling water to be circulated through the mass concrete pours
using polyethylene piping spaced approximately 3 feet on center. The design of the
system is in progress. In one possible configuration, the water would enter each pipe
from a supply manifold and travel the length of the slab, exiting to a return manifold on
the opposite end of the foundation. In a second possible configuration, both the supply
and return manifolds would be located on the same side of the foundation. In this design,
each pipe would travel the length of the slab, and then double back on itself for the return
path. These parallel pipes would be separated by about 3 feet.
This process could raise the water temperature 0.6 to 2.2 degrees C. However,the
objective of the system design is to keep the temperature rise as low as possible (less than
1 degree F if possible)to ensure limited temperature differential across the concrete slab.
It is this objective,the need to limit temperature rise,that establishes the design flow rate
for the cooling system.
1
www.duke-energy.com

The water exiting the slab will be collected in the return manifold and directed to a
dissipation pad prior to entering the river(see attached drawing). This same rip rap
dissipation pad has been used to disperse well water during the dewatering operation.
While there is no formal measurement of groundwater seepage (non-operational flow)
into the river downstream of the dam, it is estimated that the seepage flow is between 15
and 25 cfs. Therefore, it is estimated that we would be extracting no more than 10%of
the leakage flow. Even with the highly conservative assumption that all the water was
returned at the highest temperature (2.2 C above its extraction temperature) and that the
leakage flow was at the low end of the estimate (15 cfs), the impact would not exceed the
2.8 degrees C allowed for a Class C water body. In reality,the returned water will have
almost no noticeable impact on the temperature of the receiving waters.
We would like to stress that the water will not be in contact with the concrete at any point
in its flow circuitry. We understand that any adverse impacts due to non-compliance
with the temperature limits described above could result in an enforcement action.
We would like to initiate this project on October 1, 2009. If additional information can
be supplied to facilitate a timely response,please let us know. Thanks in advance for
your time and effort on our behalf.
Should you have any questions or comments regarding this request, please feel free to call me at
[phone] or Allen Stowe(704)382-4309.
Sincerely,
q 11
V,__ G�4�
Jon Wise
Project Director
Duke Energy Carolinas, LLC
xc: Allen Stowe -DEC
Jason Isbanioly - HDR
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Wilson, Susan A
From: Stowe, Allen [[e-mail]]
Sent: Tuesday, November 10, 2009 2:37 PM
To: Wilson, Susan A
Subject: RE: Bridgewater Concrete Project
Susan,
I've discussed with the project team and we can meet the trout water temperature requirements (0.5 degrees C delta T
and 20 degrees C max.).
The monthly monitoring/reporting requirements you have outlined below seem fine.
Could you provide us with written approval so that we can proceed with the concrete cooling?
Please call me at either of the numbers listed below if need be. Thanks
Allen Stowe
EHS Water Management
Duke Energy Carolinas
[e-mail]
704-382-4309 (Office)
704-516-5548 (Cell)
From: Wilson, Susan A [mailto:[e-mail]]
Sent: Thursday, October 08, 2009 5:22 PM
To: Stowe, Allen
Subject: RE: Bridgewater Concrete Project
Allen—in re.To my voice mail today(I'll be out tomorrow, but back Monday)—that stretch is not classified. However,
what this means is that it takes on the classification of the downstream section (which is WS-IV,Tr). This could be
problematic for you from a temperature standpoint (or maybe not, due to the dilution). Please look at 15A NCAC 213
.0211(3)(j)—the last sentence re.Tr waters(and this is also stated in the general permit). We can discuss Monday.
Regarding the other questions—one up and downstream reading each day is sufficient—we'd prefer soon after
beginning the pour for that day. if you compile the data and submit to us (ARO)—that's sufficient. Probably during the
first month—compile weekly and submit. Then monthly. I can detail that in a letter. Cease the discharge if non-
compliant or if it creates a fish/aquatic life kill. We're OK with the sample stations.
Susan A. Wilson [e-mail]
North Carolina Dept. of Environment and Natural Resources
Asheville Regional Office
Division of Water Quality-Surface Water Protection
2090 U.S. 70 Highway
Swannanoa, NC 28778
Tel: [phone]
Fax: [phone]
Notice: E-mail correspondence to and from this address may be subject to the North Carolina Public Records law and
therefore may be disclosed to third parties.
1

From: Stowe, Allen [mailto:[e-mail]]
Sent: Thursday, October 01, 2009 9:02 PM
To: Wilson, Susan A
Cc: Wise, Jon; Weaver, Donald
Subject: FW: Bridgewater Concrete Project
Susan,
Hopefully this note will address your questions:
1. The concrete pours will take place from mid-October 2009 (if approved) until the foundation is complete at the end
of September 2010. The cooling water will be used only as needed.
2. The temperature of the discharge water after mixing with the river flow will be taken daily from a pier downstream
of the concrete bridge on State Road 1223. It is sufficiently downstream to ensure complete mixing. The reading
would be a single point in the river. The upstream location would be the penstock from the old power house.
These are the upstream and downstream sampling points that are currently used to comply with the NPDES
general permit. Question—Can we take one upstream and downstream temperature reading each day that the
concrete cooling process is in operation? Is reporting of this data to NC DENR DWQ necessary at all? With the
general NPDES permit, we take quarterly temperature samples but aren't required to report. Of course, we would
immediately notify NC DENR DWQ in the event of any non-compliance. If not, can we compile these results and
report them maybe monthly or quarterly?
3. 1 have attached a scaled drawing showing the relative locations of the intake, pours, discharge and sampling
points. The attached file is in .tif format, let me know if you have difficulty opening it.
Please let me know if you need any additional information. Thanks for your assistance.
Allen Stowe
EHS Water Management
Duke Energy Carolinas
[e-mail]
704-382-4309 (Office)
704-516-5548(Cell)
From: Stowe, Allen
Sent: Tuesday, September 22, 2009 9:23 AM
To: Wise, Jon
Subject: Bridgewater Concrete Project
Jon,
heard from Susan Wilson this morning. She doesn't have any real problems with the concrete pouring project but needs
the following information:
1. The expected duration of the project(October 1 until ?)
2. Upstream and downstream monitoring performed once per day initially when the concrete pouring starts. The
frequency may be reduced to weekly after the first couple of weeks. The downstream location should be at a
location where mixing is complete. We would send her this temperature information via e-mail.
3. A drawing or sketch showing the location of the concrete pouring activities and the upstream and downstream
locations.
If you can provide me with this information requested in the numbers 1 and 3, 1 will e-mail it to her. She promised to send
us a written approval (provided everything was satisfactory) to initiate the project.
Thanks
2

Wilson, Susan A
From: Stowe, Allen [[e-mail]]
Sent: Thursday, October 01, 2009 9:02 PM
To: Wilson, Susan A
Cc: Wise, Jon; Weaver, Donald
Subject: FW: Bridgewater Concrete Project
Attachments: BW-0003-51—rev02—d.tif
Susan,
Hopefully this note will address your questions:
1. The concrete pours will take place from mid-October 2009 (if approved) until the foundation is complete at the end
of September 2010. The cooling water will be used only as needed.
2. The temperature of the discharge water after mixing with the river flow will be taken daily from a pier downstream
of the concrete bridge on State Road 1223. It is sufficiently downstream to ensure complete mixing. The reading
would be a single point in the river. The upstream location would be the penstock from the old power house.
These are the upstream and downstream sampling points that are currently used to comply with the NPDES
general permit. Question—Can we take one upstream and downstream temperature reading each day that the
concrete cooling process is in operation? Is reporting of this data to NC DENR DWQ necessary at all? With the
general NPDES permit, we take quarterly temperature samples but aren't required to report. Of course, we would
immediately notify NC DENR DWQ in the event of any non-compliance. If not, can we compile these results and
report them maybe mom or quarterly?
3. 1 have attached a scaled drawing showing the relative locations of the intake, pours, discharge and sampling
points. The attached file is in .tif format, let me know if you have difficulty opening it.
Please let me know if you need any additional information. Thanks for your assistance.
Allen Stowe
EHS Water Management
Duke Energy Carolinas
[e-mail]
704-382-4309 (Office)
704-516-5548(Cell)
From: Stowe, Allen
Sent: Tuesday, September 22, 2009 9:23 AM
To: Wise, Jon
Subject: Bridgewater Concrete Project
Jon,
I heard from Susan Wilson this morning. She doesn't have any real problems with the concrete pouring project but needs
the following information:
1. The expected duration of the project(October 1 until ?)
2. Upstream and downstream monitoring performed once per day initially when the concrete pouring starts. The
frequency may be reduced to weekly after the first couple of weeks. The downstream location should be at a
location where mixing is complete. We would send her this temperature information via e-mail.
3. A drawing or sketch showing the location of the concrete pouring activities and the upstream and downstream
locations.
1

If you can provide me with this information requested in the numbers 1 and 3, 1 will e-mail it to her. She promised to send
us a written approval (provided everything was satisfactory) to initiate the project.
Thanks
Allen Stowe
EHS Water Management
Duke Energy Carolinas
[e-mail]
704-382-4309 (Office)
704-516-5548(Cell)
(Yid
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NC DENR-DIVISON OF WATER QUALITY 2B .0300
.0308 CATAWBA RIVER BASIN
Class
Name of Stream Description Class Date Index No. nn
CATAWBA RIVER (including From Bridgewater Dam WS-V 04/01/99 11-(31)
backwaters of Rhodhiss Lake (Linville Dam) to a point ©p
below elevation 995) 0.6 mile upstream of Muddy
Creek pQ
CATAWBA RIVER (including From a point 0.6 mile WS-IV;Tr 05/01/07 11-(31.5) Qt"'
backwaters of Rhodhiss Lake upstream of Muddy Creek to t��
below elevation 995) a point 1.2 mile upstream 0l
of Canoe Creek up
_`
Muddy Creek From source to a point 0.5 C 04/01/99 11-32-(0.5)
mile upstream of mouth
North Muddy Creek From source to Muddy Creek C 04/01/99 11-32-1
Hicks Branch From source to North Muddy C 09/01/74 11-32-1-1
Creek
Goose Creek (Glade Creek) From source to North Muddy C 09/01/74 11-32-1-2
Creek
West Fork Goose Creek From source to Goose Creek C 09/01/74 11-32-1-2-0.5
Stanfords Creek (Camp From source to Goose Creek C 09/01/74 11-32-1-2-1
Branch)
Huntsville Creek From source to Stanfords C 09/01/74 11-32-1-2-1-1
Creek
Bobs Creek From source to North Muddy C 09/01/74 11-32-1-3
Creek
Youngs Fork (Coperning From source to North Muddy C 09/01/74 11-32-1-4
Creek) Creek
Jacktown Creek From source to Youngs Fork C 09/01/74 11-32-1-4-1
Bledsoe Branch From source to North Muddy C 09/01/74 11-32-1-5
Creek
Huckleberry Branch From source to North Muddy C 09/01/74 11-32-1-6
Creek
White Branch From source to North Muddy C 09/01/74 11-32-1-7
Creek
Caleb Branch From source to North Muddy C 09/01/74 11-32-1-8
Creek
Big Camp Creek From source to North Muddy C 09/01/74 11-32-1-9
Creek
Little Camp Creek From source to Big Camp C 09/01/74 11-32-1-9-1
Creek
Walton Crawley Branch From source to North Muddy C 09/01/74 11-32-1-10
Creek
Neighbors Branch From source to Walton C 09/01/74 11-32-1-10-1
Crawley Branch
Ferguson Branch From source to Walton C 09/01/74 11-32-1-10-2
Crawley Branch
Thompsons Fork From source to North Muddy C 04/01/99 11-32-1-11
Creek
Page 8 of40 2009-10-03 07:18:57

NC DENR-DIVISON OF WATER QUALITY 2B .0300
.0308 CATAWBA RIVER BASIN
Class
Name of Stream Description Class Date Index No.
Jenny Branch From source to Linville C;Tr 03/01/62 11-29-8
River
Cow Branch From source to Linville C 03/01/62 11-29-9
River
Mill Timber Creek From source to Linville C;Tr 07/01/73 11-29-10
River
White Pine Creek From source to Mill Timber C;Tr 07/01/73 11-29-10-1
Creek
Crossnore Creek From source to Mill Timber C 09/01/74 11-29-10-2
Creek
Clark Branch From source to Crossnore C 09/01/74 11-29-10-2-1
Creek
Bill White Creek (White From source to Linville C 03/01/62 11-29-11
Creek) River
Buckwheat Branch From source to Linville C 03/01/62 11-29-12
River
Stamey Creek (Golden Creek) From source to Linville C 03/01/62 11-29-13
River
Canoe Branch From source to Linville C 03/01/62 11-29-14
River
Camp Creek From source to Linville C;Tr 03/01/62 11-29-15
River
Linville River From Linville Falls to B;Tr,HQW 08/01/90 11-29-(16)
Southern Boundary of Daniel
Boone Wildlife Management
Area
Gulf Branch From source to Linville C 03/01/62 11-29-17
River
Bull Branch From source to Linville C 03/01/62 11-29-18
River
Linville River From southern Boundary of B;HQW 04/01/99 11-29-(19)
Daniel Boone Wildlife
Management Area to Lake
James, Catawba River
Chimney Branch From source to Linville C 03/01/62 11-29-20
River
Cambric Branch From source to Linville C 03/01/62 11-29-21
River
Shooks Creek From source to Linville C;Tr 07/01/73 11-29-22
River
Sandy Branch From source to Shooks Creek C;Tr 07/01/73 11-29-22-1
White Creek From source to Lake James, C 04/01/99 11-30
Catawba River
Page 7 of40 2009-10-03 07:18:57

_
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-K
DDuke CORPORATE EHS SERVICES
Energy, Duke Energy Corporation
526 South Church St.
Charlotte, NC 28202
Mailing Address:
EC13K/PO Box 1006
February 12, 2009 Charlotte, NC 28201-1006
Mr. Keith Haynes
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
Asheville Regional Office
2090 U.S. Highway 70
Swannanoa, North Carolina 28778
Subject: Duke Energy Carolinas,LLC-Hydroelectric Stations
Modification of Bridgewater Hydroelectric Facility-Burke County
General NPDES Permit-NCG500000
Certficate of Coverage-NCG500102
Dear Mr. Haynes:
As discussed during our telephone conversation on February 3, 2009; the purpose of this letter is to
document proposed modifications to the Bridgewater Hydroelectric Facility.
The existing two unit Bridgewater power house is being replaced with a new three unit power house.
The overall flow will increase from 1070 to 1250 cubic feet per second (cfs) for each of the two main
units. A third unit with a flow capacity of 145 cfs is being added.
This new plant is expected to be operational in 2011. These changes will be reflected in the next
NPDES renewal application for the hydroelectric general permit in 2012.
Thank you for your assistance on this matter. If clarifications are needed, please contact me at(704)
382-4309.
Sincerely,
Allen Stowe
Water Management
��f 1
F E B 1 3 2009
-FTY SECTION
AS-1 - �, �- 0��;�.O Fice
�,v� x
www.duke-energy.com

r
RCDENR
� �arr..r
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,EC13K
City Charlotte StateNC ZIP Code 28202
Telephone Number(704) 382-4309 Fax: [phone]
Email address jastow duke-energv.com
*Address to which all permit correspondence should be mailed
1
2) Location of facility producing discharge: I L� "` FEB 1 �� 7 [
Facility Name Bridgewater Hydroelectric Station i ) T„
VV r !
Facility Contact Sam Powell ` - ' w -
Street Address 5790.Power House Road
City Morganton StateNC ZIP Code 28655
County Burke
Telephone Number(828) 584-1451 Fax: N A
Email address sg op well duke-energy.com
3) Description of Discharge:
a) Is the discharge directly to the receiving stream? 0 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 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
❑ Boiler Blowdown Outfall (s) #:
Page 1 of 3

NCG500000 renewal application
❑ Cooling Tower Blowdown Outfall(s)#:
❑ Condensate Outfall(s)#:
❑ 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):
❑ Chlorine ❑ Biocides ❑Corrosion inhibitors ❑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.)? ❑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: n Continuous ❑Intermittent ❑Seasonal*
i) If the discharge is intermittent,describe when the discharge will occur:
ii) *Check the month(s)the discharge occurs: ❑Jan ❑ Feb ❑ Mar. ❑Apr❑ May ❑Jun ❑ Jul ❑
Aug. ❑ Sept. ❑ Oct. ❑ Nov. ❑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
J� 1 29 07
(Signature of Applic q (Date Signed)
North Carolina General Statute 143-215.6 b (i) provides that:
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.)
aEasasaEasasasasasasaEa
This Notice of Renewal Intent does NOT require a separate fee.
The permitted facility already pays an annual fee for coverage under NCG500000.
asasacacasasasacasasasa
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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BRIDGEWATER HYDRO STATION
SCALE 1:24NO
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...................................................................................................................................................................................................................................
Swannanoa, NC 28778
to
5790 Powerhouse Rd
Morganton, NC 28655-6204
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Find it in the 2007 Road Atlas
Swannanoa, NC Morganton, NC
• page 74, grid section • page 74, grid section
L-6, Western North E-2
Carolina map
• page 74, grid section
E-1
Estimated Total Driving Estimated Total Driving Total Number of Steps:
Time: Distance: 14
53 minutes 41 miles
Step Directions Distance
1 You are at Swannanoa,NC
.. ................................................................................................................................................................................................................................
2 Go South on a local road < 0.1 miles
.....................................................................................................................................................................................................................................
3 Bear left onto McBrayer Av < 0.1 miles.
...:................................................................................................................................................................................................................................
4'- Turn right onto Riverwood Rd 0.1 miles
.. ................................................................................................................................................................................................................................
Turn sharply left onto US-70 (Black Mountain Hwy) 0.4 miles
...................................................................................................................................................................................................................................
htt)://www.randmcnally.com/nnc/directions/dirPrintDirections.jsp?ref=dim&col=color&sStartName=&s... 2/19/2007

Get Directions Page 2of2
Turn right onto Patton Cove Rd 0.4 miles
'-----------------------------------------------------.--------------------
' 7 Take I-40 E ramp on kaft 35 rnikaa
-----------------'----------------------------------------------------------.
8 Take Exit94 (Dvoartsv|Ue Rd) on right 0.2 miles
---------------------------------------------------------------------------'
9 Turn left onto Dvaartsvi|le Rd 0.7 rni|ms
�����������������������������������...................................................................................................................... �
10 Turn left onto US-70 1.7 nni|as
---------------------------------------------------------------------------'
11 Turn sharply right onto Bridgewater Rd 1.3 miles
-................................................................................................................................................................................................................................
12 Turn right onto N Powerhouse Rd 1.4 miles
'--------------------------------------------------------------------------'
13 Turn sharply right onto Powerhouse Rd 0.3 miles
...^ ..................................................................................................... ....................................................................................................................
14 You are at579O Powerhouse Rd,Morganton,NC
�...............................................................................................................................................................................................................................
Destination: 579O Powerhouse Rd
Morganton, NC28G55-62O4
4 Mt
51
ONION POE"',
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Please note that these driving directions are suggested. No warranty is given as to their content or route
usability. Rand McNally and its suppliers assume no responsibility for any loss or delay resulting from such use.
Please let lJs|know ofany errors or omissions you find in our driving directions and maps, especially the names of
tonvns and streets that we may have been unable to locate for you.
All rights reserved. Use subject tolicense.
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-

i
DlllCe Duke Energy Corporation
Energy® 526 South Church St.
Charlotte, NC 28202
January 29, 2007 Mailing Address:
PO h.Z.lOQ6...
Charlotte;NC 28201 1006
Mr. Charles Weaver I {
State of North Carolina � `
Department of Environment and Natural Resources
Division of Water Quality ti
Point Source Branch 4 — 1 ] I
1617 Mail Service Center r x
Raleigh, North Carolina 27699-1617 � �
WATER QUALITY SECTION
AEI-r'Vil Lr ('eG'^i i"t t
Subject: Duke Energy Carolinas, LLC—NPDES Perrpjt A�IY' lication
Renewal of NPDES General Permit-#NC6t k6
Bear Creek Hydroelectric plant—NCG500124
Bridgewater Hydroelctric Plant—NCG500102
Bryson Hydroelectric Plant—NCG500129
Cedar Cliff Hydroelctric Plant—NCG500125
Cowans Ford Hydroelectric Plant—NCG500139
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:
Duke Energy Carolinas, LLC requests the subject general permit be renewed and reissued. The
above referenced permit expires July 31, 2007. 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(704)382-4309.
Sincerely,
Allen Stowe
Scientist,Water Management
Attachments
k_d'C*`w/: Mr. Larry Frost—,NC DENR Asheville R.O.
www.duke-energy.com

FWA
FJAL
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): NCG5001O2
(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, EC13K
City Charlotte StateNC ZIP Code 28202
Telephone Number(704) 382-4309 Fax: [phone]
Email address jastowe(a)duke-energom
*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: N/A
Email address sgpowell(@duke-energy.com
3) Description of Discharge:
a) Is the discharge directly to the receiving stream? 0 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 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.
0 Non-contact cooling water Outfall(s) #: 001
❑ Boiler Blowdown Outfall (s) #:
Page 1 of 3

NCG500000 renewal application
-' ❑ Cooling Tower Blowdown Outfall(s)#:
❑ Condensate Outfall(s)#:
❑ 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):
❑ Chlorine (3 Biocides ❑Corrosion inhibitors ❑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.)? ❑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: ❑Jan ❑ Feb ❑ Mar. ❑Apr❑ May ❑Jun ❑Jul ❑
Aug. ❑ Sept. ❑ Oct. ❑ Nov. ❑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
,i 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
1 29 07
(Signature of Applic t) (Date Signed)
North Carolina General Statute 143-215.6 b (i) provides that:
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.)
aEasaEasaeacasasasasasa
This Notice of Renewal Intent does NOT require a separate fee.
The permitted facility already pays an annual fee for coverage under NCG500000
asasaEaEacasaEaEasasasa
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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MAP OF THE AREA AROUND
BRIDGEWATER HYDRO STATION
SCALE 1:24000
vw 0 t000 2000 3000 4000 sm $000 7000 FEET
1 MOMETER

Facility Duke Energy Environmental Telephone Number
Contact
Bear Creek Marcus Pitts 864 847-3054
Bridgewater Nob Zalme 704 645-2706
Bryson Marcus Pitts 864 847-3054
Cedar Cliff Marcus Pitts 864 847-3054
Mission Marcus Pitts 864 847-3054
Tennessee Creek Marcus Pitts 864 847-3054
Nantahala Marcus Pitts 864 847-3054
Rhodhiss Nob Zalme 704 645-2706
Tuckasee ee Marcus Pitts 864 847-3054
Tuxedo Steve Hodges 828 657-2339
Thorpe Marcus Pitts [phone]

A 7L4LA.
FqCDENR
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
November 15, 2006
Allen Stowe
Duke Energy Corporation
P.O. Box 1006 [EC13K]
Charlotte,NC 28201-1006
Subject: NPDES Permit NCG500000 renewal
Certificate of Coverage(CoC)NCG500102
Bridgewater Hydroelectric Plant
Burke County
Dear Permittee:
The facility listed above is covered under NPDES General Permit NCG500000. NCG500000 expires.
on July 31,2007. Federal(40 CFR 122.41)and North Carolina(15A NCAC 2H.0105(e))regulations require
that permit renewal applications must be filed at least 180 days prior to expiration of the current permit. If
you have already mailed a renewal request,you may disregard this notice.
To satisfy this requirement,the Division must receive a renewal request postmarked no later than
February 1, 2007. Failure to request renewal by this date may result in a civil penalty assessment. Larger
penalties may be assessed depending upon the delinquency of the request. This renewal notice is being sent
well in advance of the due date so that you have adequate time to prepare your application.
If any discharge previously covered under NCG500000 will occur after July 31,2007,the
CoC must be renewed. Discharge of wastewater without a valid permit would violate North Carolina
General Statute 143-215.1;unpermitted discharges of wastewater may be assessed civil penalties of up to
$25,000 per day.
If all discharge has ceased at your facility and you wish to rescind this CoC [or if you have other
questions], contact me at the telephone number or e-mail address listed below.
Sincerely,
Charles H. Weaver,Jr.
NPDES Unit
cc: Central Files -� •- �- ,•.- U -.a.r 1 L,°.-
J r]
NPDES File
l�
i
S ' I
1617 Mail Service Center,Raleigh,North Carolina 27699-1617 i ;f
512 North Salisbury Street,Raleigh,North Carolina 27604 .Q1't !t, 'Qlina
Phone: [phone],extension 511/FAX [phone]/[e-mail] ,yuy��!/�
An Equal Opportunity/Affirmative Action Employer-50%Recycled/10%Post Consumer Paper K L "

�rIGG ,S' do / 0Z
Duke DUKE ENERGY CORPORATION
400 South Tryon St.
t Energy® Charlotte, NC 28285
Mailing Address:
PO Box 1007
Charlotte, NC 28201-1007
May 11, 2006 '
�q
rt
Ms. Coleen Sullins
Permits and Engineering Unit d F
f _
North Carolina Department of Environmental,
Health and Natural Resources
Division of Water Quality
1617 Mail Service Center
Raleigh, NC 27699-1617
Re: Delegation of Authority-Signatures on Reports and Requested Information
Duke Energy NPDES Permitted Stations
Dear Ms. Sullins:
Federal Regulation 40 CFR 122.22, as well as Part II of Duke Energy's NPDES permits, specifies
that all reports required by NPDES permits and other information requested by the permit issuing
authority shall be signed by a principal executive officer of at least the level of Vice President or a
duly authorized representative. I hereby authorize the Site Production Manager the authority to
sign all reports and requested information related to the permits specified in the attached list
If you have questions or need additional information, you may contact Allen Stowe at 704-382-
4309.
Sincerely,
M' chell C. Grig s
ice President
Environment, Health and Safety
/phs
Attachment
xc: Rex Gleason, NCDENR, Mooresville, NC
Steve Mauney, NCDENR, Winston-Salem, NC
David Goodrich, NCDENR, Raleigh, NC
L,Fb'rest Westall, NCDENR,Asheville, NC
www.duke-energy.com

Permits Currently Held:
Allen Steam Station- NC0004979
Belews Creek Steam Station- NCO024406
Belews Creek Steam Station WQ0005873
Belews Creek Steam Station Flyash Landfill Permit#85-03
Buck Steam Station - NC0004774
Cliffside Steam Station - NC0005088
Dan River Steam Station- NC0003468
Lincoln Combustion Turbine Station- NCO080781
Marshall Steam Station - NC0004987
Marshall Steam Station Flyash Landfill Permit#18-04
Riverbend Steam Station - NC0004961
Bridgewater Hydro Station- NCG500102
Cowans Ford Hydro Station-NCG500139
Lookout Shoals Hydro Station- NCG500120
Mountain Island Hydro Station - NCG500131
Oxford Hydro Station NCG500119
Rhodhiss Hydro Station - NCG500108
Tuxedo Hydro Station- NCG500110
Bear Creek Hydro Station-NCG500124
Bryson Hydro Station—NCG500129
Cedar Cliff Hydro Station—NCG500125
Mission Hydro Station—NCG500128
Nantahala Hydro Station—NCG500136
Tennessee Creek Hydro Station—NCG500123
Thorpe Hydro Station— NCG500127
Tuckaseegee Hydro Station— NCG500126

State of North Carolina
Department of Environment •
and Natural Resources a
Division of Water Quality
Michael F. Easley, Governor
William G. Ross Jr., Secretary NCDENR
Gregory J. Thorpe, Ph.D., Acting Director NORTH CAROLINA DEPARTMENT OF
ENVIRONMENT AND NATURAL RESOURCES
11/26/2001
ANGELA M GROOMS
BRIDGEWATER HYDROELECTRIC PLANT
13339 HAGERS FERRY RD ~
HUNTERSVILLE, NC 28078
Subject: NPDES Wastewater.Permit Coverage Renewal
Bridgewater Hydroelectric Plant`
COC Number NCG500102
Burke County
Dear Permittee:
Your facility is currently covered for wastewater discharge under General Permit NCG500000. This permit expires
on July 31,2002. Division of Water Quality(DWQ)staff is in the process of rewriting this permit with a
scheduled reissue in the summer of 2002. Once the permit is reissued,your facility would be eligible for continued
coverage under the reissued permit.
In order to assure your continued coverage under the general permit,you must apply to the DWQ for renewal of
your permit coverage. To make this renewal process easier,we are informing you in advance that your permit
coverage will be expiring. Enclosed you will find a general permit coverage renewal application form. This
will serve as your application for renewal of your permit coverage. The application must be completed and
returned with the required information by February 01,2002 in order to assure continued coverage under the
general permit.There is no renewal fee associated with this process. Your facility will be invoiced for the annual
permit fee at a later date.
Failure to request renewal within this time period may result in a civil assessment of at least$250.00. Larger
penalties may be assessed depending on the delinquency of the request. Discharge o':wastewater from your facility
without coverage under a valid wastewater NPDES permit would constitute a violation ofNCGS 143-215.1 and
could result in assessments of civil penalties of up to$10,000 per day.
If the subject wastewater discharge to waters of the state has been terminated,please complete the enclosed
rescission request form. Mailing instructions are listed on the bottom of the form. You will be notified when the
rescission process has been completed.
If you have any questions regarding the permit coverage renewal procedures please contact the Asheville Regional
Office at 828-251-6208 or Delonda Alexander of the Central Office Stormwater Unit at(919)733-5083,ext.584
Sincerely,
Bradley Bennett,Supervisor
Stormwater and General Permits Unit
cc: Central Files
Stormwater and General Permits Unit Files
Asheville Regional Office
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
Michael F. Easley, Governor
William G. Ross Jr., Secretary NCDENR
Alan W. Klimek, P.E., Director NORTH CAROLINA DEPARTMENT OF
ENVIRONMENT AND NATURAL RESOURCES
July 26,2002 JUL 'd 12002
ANGELA M GROOMS
BRIDGEWATER HYDROELECTRIC PLANT
13339 HAGERS FERRY RD MAIL CODE EC11E
HUNTERSVILLE, NC 28078
Subject: Reissue-NPDES Wastewater Discharge Permit
Bridgewater Hydroelectric Plant
COC Number NCG500102
Burke County
Dear Permittee:
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(919)733-5083,ext.578
Sincerely,
for Alan W.Klimek,P.E.
cc: Central Files
Stormwater&General Permits Unit Files
Asheville Regional Office
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 j'
Department of Environment,
Health and Natural Resources •
Division of Environmental Management
James B. Hunt, Jr., Governor
Jonathan B. Howes, Secretary C) E N F1
A. Preston Howard, Jr., P.E., Director
July 15, 1993 g
r r
- n V k,1 LR SEC"'Wry 7 _
M. D. McIntosh �� ��1 ��a
�r
, €
13339 Hagers Ferry Road
Huntersville,NC 28078
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.
Sincerely,
Original Signed By
Coleen H. Sullins
A. Preston Howard,Jr., P.E.
cc:
ice
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

STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT,HEALTH,AND NATURAL RESOURCES
DIVISION OF ENVIRONMENTAL MANAGEMENT
GENERAL PERMIT NO. NCG500000
CERTIFICATE OF COVERAGE No. NCG500102
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,II,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 ay
Coleen H. Sullins
A.Preston Howard,Jr.,P.E.,Director
Division of Environmental Management
By Authority of the Environmental Management Commission

UNITED STATES
ARTMENT OF THE INTERIOR
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State of North Caroline ­�°'` " '
Department of Environment,
Health and Natural Resources t •
Mooresville Regional Office
.� James B. Hunt, Jr., Governor [DF= HNFZ
Jonathan B. Howes, Secretary
Linda Diane Long, Regional Manager
DIVISION OF ENVIRONMENTAL MANAGEMENT
September 18, 1995
Certified Mail
Return Receipt Requested :
Mr. Michael Lascara, Manager i ""�
Environmental Protection
Duke Power Company � �
13339 Hagers Ferry Road
Huntersville, N.C. 28078-7929
Subject: Notice of Violation and
Recommendation for
Enforcement
NCGS 143-215.85 - Oil
Pollution and Hazardous
Substances Control Act
Duke Power Sub Station
Burke County, N.C.
Dear Mr Lascara:
Chapter 143, North Carolina General Statutes (NCGS) , directs
and authorizes the Environmental Management Commission of the
Department of Environment, Health and Natural Resources to protect
and preserve the water and air resources of the State. The Division
of Environmental Management has the delegated authority to enforce
all pollution control laws and regulations .
At approximately 11:45 pm on September 5, 1995, staff with
this Office received information from Mr. Charles Moody with the
Catawba County Emergency Management Office that oil had been
observed on Lake Hickory near the junction of Burke, Caldwell and
Catawba Counties. At the time of Mr. Moody's report, the source of
the oil was unknown. In an effort to obtain help to contain and
clean-up the subject oil release, Mr. Moody contacted Duke Power
Company (DPC) representatives for any assistance that DPC could
provide. At no time did any of the DPC representatives contacted by
Mr. Moody indicate that the source of the oil may be from equipment
owned and operated by DPC.
919 North Main Street,Mooresville,North Carolina 28115 Telephone [phone] FAX [phone]
An Equal opportunity Affirmative Action Employer 500k recycled/10%post-consumer paper

r"
Mr. Michael Lascara
September 18, 1995
Page Two
Subsequently, information was received from the Rhodhiss
Police Department that an act of vandalism, which occurred on or
before September 4, 1995 had resulted in the release of an
undetermined,quantity of transformer oil at a sub station owned by
DPC. Apparently, DPC representatives were aware of this release on
September 4th, however, there is no record of the release having
been reported to the Division. Presented with this information and
after an investigation of the site where the oil was released, Mr.
Moody, .Mr. Terry Gross with DEH-Public Water Supply Section, and
Mr. James Bowden with DPC were satisfied that the oil observed in
the lake originated from the sub station site. A copy of the
Division's Report of Investigation is enclosed with this 'letter.
Based on the , information provided to this office and the
results of the Division's investigation, we have reason to believe
that Duke Power Company was responsible for activities resulting in
noncompliance with North Carolina Law. Specifically, NCGS 143-
215 .85 requires that upon release of any oil to the environment,
this Agency must be notified immediately of the nature, location
and the time of the discharge and of the measures taken or are
proposed to be taken to contain -and remove the discharge. Pursuant
to NCGS 143-215.91(a) , the above violation is subject to the
assessment of a civil penalty of not more than $5,000 per day per
violation. Furthermore, as a result of this release, at least two
(2) municipal drinking water supply intakes were threatened with
long term closure due to the possibility that PCBs may have been
present in the oil. Fortunately, lake samples collected during the
investigation indicated that PCBs were not detected.
The purpose of this letter is to notify you that the
Mooresville Regional Office of the Division of Environmental
Management is considering sending a recommendation for enforcement
action to the Director of the Division of Environmental Management.
The recommendation concerns the above referenced violation of the
North Carolina General Statutes.
If you have an explanation for these violations that you wish
to present, please respond in writing within ten ( 10) days
following receipt of this notice. Your explanation will be reviewed
and, if an enforcement action is still deemed appropriate, your
explanation will be forwarded to the Director with the enforcement
package for his consideration. Please address your response to Mr.
Rex Gleason, Water Quality Regional Supervisor, at the letterhead
address

Mr. Michael Lascara
September 18, 1995
Page Three
If you have any questions concerning this matter, please
contact Mr. Gleason or meat (704) 663-1699 .
Sincerely,
B. Keith Overcash, P.E.
Regional Supervisor
Attachment
cc: Enforcement and Emergency Response
Central Files
Mooresville Regional Office
Darrell Herndon
_ �oY Davis
MLP
h:\enf\hickspi1.enf

NORTH CAROLINA DEPARTMENT OF ENVIRONMENT, HEALTH
AND NATURAL RESOURCES
DIVISION OF ENVIRONMENTAL MANAGEMENT
WATER QUALITY SECTION
919 NORTH MAIN STREET
MOORESVILLE, NORTH CAROLINA 281.15
REPORT OF: Oil Spill Investigation
DATE OF INVESTIGATION: September 6 & 7, 1995
INVESTIGATED BY: Michael L. Parker TIME SPENT: 16 hours
PLACE VISITED: Catawba River
PHYSICAL LOCATION: Catawba River at Hwy. 321 Bridge
MAILING ADDRESS: N/A
TELEPHONE #: N/A RIVER BASIN: Catawba
PERSONS .-CONTACTED: Charles Moody, Jerry Twiggs, Terry Gross,
David Matthews and James Bowden -
REASON FOR VISIT: Report of Oil Spill in the Catawba River near
the Hwy. 321 Bridge.
COPIES TO: Catawba County Department of Environmental Health
Terry Gross
REPORT:
At approximately 11:45 pm on September 5, 1995, staff with
this Office received information from Mr. Charles Moody with the
Catawba County Emergency Management Office that oil had been
observed on Lake Hickory near the junction of Burke, Caldwell and
Catawba Counties. At the time of Mr. Moody's report, the source of
the oil was unknown. In attempting to obtain help to contain and
clean-up the subject oil release, Mr. Moody contacted various Duke
Power Company (DPC) representatives and eventually arrangements
were made with DPC to provide staff aswell as clean-up materials .
At no time did any of the DPC representatives contacted by Mr.
Moody indicate that the source of the oil may be from equipment
owned and operated by DPC.

r
oil Spill Investigation
Page Two
A short time after the DPC representatives were contacted
concerning their help with the containment and clean-up, Mr. Moody
received information from the Rhodhiss Police Department concerning
an incident at a DPC substation located upstream. The sub station
served a currently vacant mill, which was located immediately below
the Lake Rhodhiss dam. As a result of vandalism, transformer oil
was released (discharged) into the river sometime during the
afternoon or evening of September 4, 1995. An investigation of the
transformer site was performed on September 4, 1995 by the local
sheriff's office and by DPC personnel. A dry absorbent was placed
on the spill by DPC personnel as soon as the oil release was
discovered.
Upon receipt of the information concerning the incident at the
DPC substation, Mr. Moody, along with Mr. Terry Gross with the
Division of Environmental Health-Public Water Supply Section, and
Mr. James Bowden, Area Supervisor with DPC, visited the sub station
site in the early morning hours of September 6, 1995. After viewing
the site, Mr. Moody and Mr. Gross were satisfied that the oil
observed in the lake originated from the substation site. During
their first inspection, the drain that allowed the oil to enter the
lake was obstructed by weeds and debris. After further review of
the evidence, Mr. Bowden, who had reportedly observed the oil
release on September 4th, also agreed with Mr. Moody's and Mr.
Gross ' assessment. Subsequently, DPC then accepted full
responsibility for the spill and initiated what could be described
as a satisfactory clean-up operation. A DPC clean-up crew arrived
to begin clean-up in the early morning hours of September 6, 1995.
Booms used during the clean-up were left in place until September
13, 1995.

STATEo-
RECEIVED
'DIED
VY{S10d Of ENVIRONMENTAL MARAGEMEN1 o
MAY 3 1989 "
MOORESVILLE
2EGIONAL 0fFIM State of North Carolina
Department of Natural Resources and Community Development
Division of Environmental Management
512 North Salisbury Street • Raleigh, North Carolina 27611
James G. Martin, Governor R. Paul Wilms
William W. Cobey, Jr., Secretary April 27, 1989 Director
Mr. Bob Waldrop
Design Engineer
Duke Power Company
P.O. Box 33189
Charlotte, NC 28212
Subject: Certification Pursuant to Section
401 of the Federal Clean Water Act,
Proposed Rip-rap for Dam
Stabilization
Duke Power Company
Bridgewater Hydro Station
Lake James
Burke and McDowell Counties
Dear Mr. Waldrop:
Attached hereto are two (2) copies of Certification No. 2330
issued to Duke Power Company dated April 27, 1989.
If we can be of further assistance, do not hesitate to contact us.
Sincerely,
R. Paul Wilms
cc: Wilmington District Corps of Engineers
Mooresville Regional- Offices.
Mr. William Mills
Mr. John Parker
Pollution Prevention Pays
P.O. Box 27687, Raleigh, North Carolina 27611-7687 Telephone [phone]
An Equal Opportunity Affirmative Action Employer

NORTH CAROLINA
Burke and McDowell Counties
CERTIFICATION
THIS CERTIFICATION is issued in conformity with the requirements of
Section 401 Public Laws 92-500 and 95-217 of the United States and
subject to the North Carolina Division of Environmental Management
Regulations in 15 NCAC 2H, Section .0500 to Duke Power Company pursuant
to an application filed on the loth day of March, 1989 to place rip-rap
material along the face of the dam at Bridgewater Hydro Station. '
The Application provides adequate assurance that the discharge of
fill material into the waters of Lake James in conjunction with the
proposed dam stabilization in Burke and McDowell Counties will not
result in a ,violation of applicable Water Quality Standards and
discharge guidelines. Therefore, the State of North Carolina certifies
that this activity will not violate Sections 301, 302, 303, 306, 307 of
_ PL 92-500 and PL 95-217 if conducted in accordance with the application
and conditions hereinafter set forth.
Condition(s) of Certification:
1. That the activity be conducted in such a manner as
to prevent significant increase in turbidity
outside the area of construction or construction
related discharge .(increases such that the
turbidity in the Stream is 25 NTU's or less are
not considered significant) .
2. That the rip-rap material consist of clean masonry
material free of toxic pollutants.
Violations of any condition herein set forth shall result in
revocation of this Certification.
This Certification shall become null and void unless the above
conditions are made conditions of the Federal Permit.
This the 27th day of April, 1989.,
DIVISION OF ENVIRONMENTAL MANAGEMENT
t
�R_ Paul Wilms, Director
WQC# 2330

�j
t y
Duke Power Company
Generation Services Department ( i��J
g , 133.39 Hagers Ferry Road i aJ
P Huntersville,NC 28078-7929s , �
�. -CX9
-� e ITV IDF, p
DUKEPOWER October 4, 1993 AWI
_
Mr. Partick M. Tobin
0T ®5;19 '
Acting Regional Administrator
Environmental Protection Agency WISION OF RWR.GGM[,qTAj MARAGUIFS
345 Courtland Street, NE MOOR€SVILL€ R€SIDUL WEE,
Atlanta, GA 30365
SUBJECT: Report on Oil Spills at
Bridgewater Hydroelectric Station - Duke
Power Company
File: BR-720.00
Dear Sir:
Duke Power Company has recently reviewed the oil spill
history for our Bridgewater Hydroelectric Station and
can find no record of having submitted a follow-up
report to your office of two oil spills that occurred
in 1988 . in response to the requirements of 40CFR112,
Duke Power Company is submitting the attached report
concerning two oil spills which occurred at Bridgewater
within a twelve month period. A spill of hydraulic oil
on May 2nd was estimated to have released one to two
gallons to the Bridgewater tailrace and a spill on June
18th released less than one-half pint of hydraulic oil
to the tailrace.
This report includes a copy of the SPCC plan for the
facility.
If you need additional information or have any
questions, please contact me at 704/875-5268 .
Sincerely,
Robert W. Caccia
Environmental Protection Division
Attachment
xc : Mr. Ron McMillian
North Carolina Division of Environmental
Management - Environmental Operations Section
Mooresville Regional Office
919 N. Main Street
P.O. Box 950
Mooresville, NC 28115
Pat McLean - Plant Supervisor/SPCC Coordinator - Bridgewater
Printed onrecycled paper

bcc; Torn Talbert, Jr. Manager Hydro Production
Ron Punch Area Hydro Manager
w/out enclosures
John Carter
Michael Lascara
Jim Hendricks
Jack Hudish
Jeff Trepel PB05E
Maurice McIntosh EC11G

r
3
DUKE POWER COMPANY
REPORT TO THE REGIONAL EPA ADMINISTRATOR
CONCERNING REPORTABLE OIL SPILLS
AT BRIDGEWATER HYDROELECTRIC STATION
R. W. Caccia
September 28, 1993

1. Name of the Facility Bridgewater Hydro Station
2 . Name of the owner and operator of the facility
Owner: Duke Power Company
422 South Church Street
Charlotte, NC 28242-0001
Operator: J. Pat McLean- Hydro Station Supervisor
3. Location of this facility -
Mailing Address:
Bridgewater Hydro Station
P.O. Box 290
Morganton, NC 28655
The Bridgewater Hydro Station is located approximately 4
miles west of Glen Alpine, North Carolina on the Catawba .
River in Burke County.
4 . Date and year of initial facility operation -
Bridgewater Station is a two unit hydro electric generation
plant. Both units began commercial operation on May 4, 1919 .
5 . Maximum storage and handling capacity of oil at the
facility and normal daily throughput -
Reference attached SPCC plan
6 . Description of the facility -
Description - Bridgewater Hydro Station is a two unit, 20,000
KW (nameplate capacity) , hydroelectric generating station
that utilizes water from Lake James to turn turbines which in
turn are :coupled to generators that produce electricity for
the Duke Power Company Service area.
Bridgewater Hydro Station typically operates in a cyclic
manner, primarily to provide peak load generation to the Duke
System. Similar to other electrical stations, a major source
of oil is for the cooling of transformers and other large
electrical and mechanical equipment. Smaller quantities of
oil are used for the lubrication of pumps and motors .
7 . . A complete copy of the SPCC Plan with any amendments :
Attached

8. The cause(s) of the spill(s) , including a failure
analysis of the system(s) or subsystem(s) in which the
failure occurred -
See attached Spill Reports .
9 . `The corrective actions and/or countermeasures taken,
including a complete description or equipment repairs and/or
replacement -
See attached Spill Reports.
10 . Additional preventive measures taken or contemplated to
minimize the possibility of recurrence -
See attached Spill Reports .
11 . Such other information as the Regional Administrator may
reasonably require pertinent to the Plan or spill event -
Duke Power will supply any other information as required by
the Regional Administrator.

'orm 0241306-87)
DUKE POWER COMPANY
REPORT OF OIL, PCB, OR HAZARDOUS SUBSTANCE DISCHARGE
DTE: This form shall be completed when any oil or hazardous substance spills
onto soil, into navigable waters, or as a result of a transportation
incident. : This includes any waste oil and known or suspected
PCB-contaminated oil.
Contact. immediately your department representative (listed on the back of
this form) or an alternate representative when a spill occurs. Send this
completed form to your department representatives Attach additional sheets
as needed.
t. Time and date of discharge: May 2, 1988 15:45
!. Name, address, phone numer and department of person completing this report:
Howard Simmons, Bridgewater Hydro Station, 327-2033, Operating
1. Material discharged: a. Trade Name Texaco Regal R&O 46 oil
b. Chemical Name Hvdraulic Oil
a. Quantity discharged (gallons, lbs., etc.): approximately 30 gal .
b. Source of spill: KVAR (capacitors)
KVA (transformers, regulators)
KV (circuit breakers)
X Other (specify: pipeline, tank, etc.)
. Governor Oil Sump Tank
Description of the location of the discharge (generating station, substation,
residential; including road name and number, city, county, state, distance
and direction (N, S, E, W) from landmark). Bridgewater Hydro Station, 4 miles
west of Glen Alpine, N. C.
Cause of discharge: Oil pump stopped, causing sump tank to overflow
Environmental medium to which the discharge occurred (soil, water, air): Water
.r Time and date of reporting discharge to department representative or
alternate: Carl Robinson, Area Hydro Manager contacted at 5:10 PM, May 2, 1988
Georde Swearingen, contacted at 8:10 am, May 3, 1988
Attach description of steps taken in chronological order to clean up the
spilled material and to mitigate environmental damage including dates and
times steps were taken. See attached sheet.
For PCB spills, attach description of pre-cleanup sampling data (if
necessary), cleanup methods used (solid surfaces, depth of excavation) and
sign the certification below. N/A
PCB CLEANUP CERTIFICATION
I, (name of responsible party)
(title) (phone number)
certify that the PCB cleanup requirements have been met and the
information in this record is true.

4
9. Approximately 30 gallons spilled, floor drains were plugged containing
majority of spill to within plant, oil dry and fiber pearl used to clean
up oil areas within plant, possibly l or 2 gallons reached tailrace,
conweb used to absorb spilled oil from -tailrace, all materials placed
in heavy plastic bags, double bagged, discarded in landfill .

orm 02415(R6-87)
DUKE POWER COMPANY
REPORT OF OIL, PCB, OR HAZARDOUS SUBSTANCE DISCHARGE
)TE: This form shall be completed when any oil or hazardous substance spills
onto soil,, into navigable waters, or as a result of a transportation
incident. ' This includes any waste oil and known or suspected
PCB-contaminated oil.
Contact immediately your department representative (listed on the back of
this form) or an alternate representative when a spill occurs. Send this
completed form to your department representatives Attach additional sheets
as needed.
Time and date of discharger June 18, 1988 11:35 AM
. Name, address, phone numer and department of person completing this report:
Howard W. Simmons, Bridge_wcater Hydro Station, 327-2033, Operatin
Material discharged: a. Trade Name Texaco Regal R & 0 46 oil
h. Chemical Name Hydraulic Oil
a. Quantity discharged (gallons, lbs. , etc. ): 1 half pint (see 9 below) .
b. Source of spill: KVAR. (capacitors)
KVA (transformers, regulators)
KV (circuit breakers)
X Other (specify: pipeline, tank, etc.)
. Pipeline (see 9)
Description of the location of the discharge (generating station, substation,
residential ; including road name and number, city, county, state, distance
and direction (N, S, E, W) from landmark). Bridgewater Hydro Station, 4 miles west
of Glen Alpine, N. C.
Cause of discharge: Burst water line (see 9)
Environmental medium to which the discharge occurred (soil, water, air): Water
Time and date of reporting discharge to department representative or
alternate: Duane Johnson, Area Hydro Engineer contacted at 12:00 N, June 18, 1988
Carl Robinson, Area Hydro Manager contacted a
June 18, 1966.
Bobar en, contacted aJune ZU, 1988.
Attach description of steps taken in chronological order to clean up the
spilled material and to mitigate environmental damage including dates and
times steps were taken. See attached sheet
For PCB spills, attach description of pre-cleanup sampling data (if
necessary), cleanup methods used (solid surfaces, depth of excavation) and
sign the certification below. N/A
PCB CLEANUP CERTIFICATION
I. (name of responsible party)
(title) (phone number)
certify that the PCB cleanup requirements have been met and the
information in this record is true.

The coupling of a 3 inch PVC water line broke at 11:35 AM, causing water
to empty into basement of plant, plant supervisor was notified immediately,
water was shut off at 11:55 AM, D. A. Johnson, Area Hydro Engineer was
contacted at 12:00 N, conwed blanket was put into tailrace at 12:00 N
(see note) . C. E. Robinson was contacted at 1220 PM.
Note: Conwed was put out as a precautionary measure because plant
supervisor was concerned that the oil sump tanks may run over and spill
if too much water got into them. The sump tanks did not run over. The
small amount of oil that got into the tailrace resulted from the water
washing the floors and equipment in the basement.

`
CERTIFICATION
I hereby certify that I have examined the facility, and being
familiar with the provisions of 40 CFR, Part 112, attest that
this SPCC Plan has been reviewed and updated in accordance
with good engineering practices.
`
�
' f
Signature of Reois+�,ed
~ . �
Professional Engineer
to A
Duane A. Johnsor,
S E 'A L
Name of Registered
Professional Engineer ' '
'
Date: September, 1990 Registration No. : 12993 State: N.C.
Name of facility: Bridgewater Hydro Station
Operator; J. P. McLean - Hydro Station Supervisor
`
,
1810080

SPILL PREVENTION CONTROL & COUNTERMEASURE PLAN
FART I
GENERAL INFORMATION
I. Name of facility: Bridgewater Hydro Station
2. Type of facility: Electric Generating Plant
3. Location of facility: Approximately 4 miles West of Glen Alpine, N.C. on
Catawba River in Burke County.
4. Name and address of owner or operator:
Name and address; Duke Power Company
422 South Church Street
Charlotte, N.C. 28242
5. Designated person accountable for oil spill prevention at facility:
r
c
Name and title: J. P. McLean - Hydro Statism Supervisor
b. Facility experienced a reportable oil spill event since January 10, 1974
(effective date of 40 CFR, Fart 112) . (If YES, complete Attachment *1 ) . Yes
----------------------------------------------------------------------------------------
MANAGEMENT APPROVAL
This SPCC. Plan will be implemented as herein described..
Signature;
Name: T. F. Talbert
Title: Hydro Operations
--------------------------------------------------------------------------------------
CERT I F I CAT_TON
I hereby certify that 1 'h have examined the facility, and being familiar with the
provisions of 40 CFR, Part 112, attest that this `'PCC Plan has been prepared in
accordance with ,.-,00d engineering practice_.
D =one A. Johnson
��C l f i intE Name of i; is erod -t•uT=SSional Engineer
•x g
Si. l'?=tilro _i' Regis- r _n _oTe==1 !Ina 1 Eiia:iiee'f---
�,
Date: September, 1990 Registration No. . 12993 State: N.C.
D
(Fart I ) Page _ of 11

le
1
7. Potential Spills -- Prediction & Control:
Location of oil containers: Intake Gate Page 1 of 1
Total
Major Type Quantity Rate Direction Secondary
Source of Failure (gals) (gals/hr) of Flaw Containment.
Type Equip: 3-Transformers - 10 Tank: 45 N/A N/A No
Oper Nm. Sta. 'Service Rupture
Manuf..
Serial #
Voltage 600-120/240 V
# tanks 3
gal/tank; 1� ��1
�1' g_.,L LaI:F:: 1J (Over Gate House)
Type Equip: 1-Transformer - lb Tank 15 N/A N/A No
Oper.. Nm. s Rupture
Manuf..
Serial #
Voltage 600-i2O/240 V
# tanks i
# gal/tank: 15 (On Pole at Daum)
Oil spilled here can flow into the water on the upstream side of the dam. The oil
will be cleaned up with Fiber Pearl and Ccnnwed. If additional materials are needed,
they will be obtained from Lake Norman, Riverbend q or Marshall , where absorbent
material and a boat and trailer are stored.
Name of facility: Bridgewater Hydro
Operator:. J . t- . McLean - Hydro Station Supervisor
(Part {) Page 2 of 'I S

. Location of oft containers: VillagIe Warehouse . Page ! of ! .
Total . .
Major Type .Quantity Rate ° Direction Secondary
Source of Fail $ . (gals) (gals/hr) of Flow Containment
Type Equip: 25Drums Tank \ 1,375 N/A . N/A No
Opp. Nm. : Oil Storage Rupture
Manuf.
Serial
Voltage
# tanks ; t/r
# gall{ E; SS . . .
Type Eg11R: Fuel Tank ~Tank 275 N/A N/A No .
Opp Nm. £ Rupture
ram f.
Serial # ;
Voltage :
# tanks : 1 .
§ gal/tank: 275
Oil spilled here will be contained with Oil D, i and dirt. It is not expicteQ
because of the distance, that any of this oil will reams the tailrace.
Name of facility: Bridgewater /ydoo -
. Operator: J. P. McLean - Hydro Station Supervisor
(Part 1) Page 3 of 11

Location of oil containers: Shop Page 1 of 1
Total
Major Type Quantity Rate Direction Secondary
Source of Failure (gals) (galsihr) of Flow Containment
Type Equip: Transformer 10 Tank: 15 N/A N/A No
Oper. Nm. Sta. Service Rupture
lanu f.
Serial #
Voltage 600/120-24 ) V - 5 KVA
# tanks 1
# gal/tank; 15
if an oil spill occurred here, the oil would have to travel over a grass lawn to a
water drain. Oil could 5e contained with Oil Dri and dirt or would soak: into the
ground. It is :not expected that any of this ail would reach the tailrace.
r
Name of facility: Bridgewater Hydro
T
Operator: 3. P. McLean - Hydro Station Supervisor

Location of ail containers: Inside Plant Page 1 of 2
Total
(Major Type Quantity Rate Direction Secondary
Source of Failure (gals) {gals/hr} of Flow Containment
Type Equip: Governor System Tank N/A N/A No
+ per. Nm. Gen-1 or Line
Manuf.. Rupture
Serial #
Voltage
# tanks 2
# gal/tank: 530 & 370
Type Equip: Bearing System Tank- 200 N/A N/A No
Qper. Nm. Gen-1 i or Line
Ma t:f '
Rupture
Serial #
Voltage
# tanks 1
# gal/tang: 200
Type Equip: Governor System Tank: _ N/A ,i,.
yr ti i N/A f
l-1.per. Nm. Gen-2 or Lire
Mainut. Ruptures
Serial #
Voltage
0 tangy:=_ 2
# gal /tank: 530 & 370
Type -quip: Bearing System Tank 200 N/A r No
Oper. Nm. Gen-2 or Line
mane . Rupture
Serial
#
Voltage
# tanks i
# gal/tank:: EOO
f'iame of facility: Bridgewater Hydro
Operator: A P. McLean - Hydro Station Supervisor
(Part 1 Page 5 of 11

Location of oil containers: Inside Plant Page c of 2
Total
Major Type Quantity fate Direction Secondary
Source of Failure (gals) (gals/hr) of Flow Containment
Type Equip: OCB-30 Tangy: 9 N/A N/A No
Oper. Nm. : MG Starter Rupture
Manuf..
Serial #
Voltage 600 V.
# tanks 1
# gal/tangy::: 9
An oil spill on the generator floor could be contained by the use of Oil Dri and rags.
If uncontaineds the oll would eventually flat, into the basement. If an oil spill
occurs in the basement; the sub-basement drains that empty into the tailrace .will
be plugged and the excess oil can be absorbed with Oil Dri. If necessary:
the generators will be shut down and bearing coaling water will be shut cuff. A
collar ,has been fabricated for the servo motor drains to prevent oil from e=-caping.
.chile allowing water to drain freely.
Name of facility: Bridgewater Hydro
Operator: i. P. McLean - Hydro Station Supervisor
(Pars 1) Page 6 of 11

Location of oil containers: SwitcWyard rage 1 of 4
Tatar
Major Type Quantity Fate Direction Secondary
Source of Failur tgals? ioaly/hri cif Floe! Containment
Type Equip: 3 Transformers - 10 Tank 135 N/A N/A No
Oper. Nm. : Sta.Se vice Rupture
Manuf. RTE
Serial #
Voltage 66()0/00 V
it tanks 3
# gal/tank: 45 i
Type Equip: Transformer - 30 Tank. 9150 N/A N/A No
Oper. Nm. . Bank #1 Rupture
Manuf. RTE
Serial # . A 6786
Voltage . 10 .,/6.6 KV
# tanks i
# gal/tank; 8150
Type Equip: Transformer 30 Tank 4530 N/A N/A No
Open. Nm. Bank #2 Rupture
Manuf. Hevi-Duty
Serial # GM 415466
Voltage 100/6.6 KV
# tanks 2 1
# gal/tangy:: 4530
Name of facility: Bridgewater Hydro
per._ C T P. Lean
Oa=iL" �? : i'iC _C..i! Hydro Station ..l:pE??-YIs'
(Part 1) rage 7 of 11

Location of nil containers: Switchyard Page 2 of 4
' Total
Major Type Quantity Rate Direction Secondary
Source of Failure _Qals) Wals/hr) of Flow Containment
Type Equip: Transformer - 30 Tank 4,916 N/A N/A No
Uper. Nm. : Bank #3 Rupture
Manuf. : Westinghouse
Serial #' :
Voltage t 88/46.2 KV - 12000 KVA
# tanks : 1
# gal/tank: 4916
/
Type Equip: OCB - 30 Tank 1 ,740 N/A N/A No
Uper. Nm. : Marion 8lack Rupture
Manuf. : General Electric '
Serial # : L- 6146JY-3O5
Voltage : 100 KV
# tanks : 3
# gal/tank: 580
Type Equip: OCB - 30 Tank 2,100 N/A N/A No
Uper. Nm. : Marion White Rupture
Manuf. : Allis Chalmers
Serial # : 293835
Voltage : 100 KV
# tanks : 3
# gal/tank: 700
Name of facility: Bridgewater Hydro
Operator: J. P. McLean - Hydro Station Supervisor
(Part I) Page 8 of K.
'
181008O

'
`
' Location of oil containers: Switchyard Page 3 of 4
. . Total
` Major Type Quantity Rate Direction )Secondary of Flow CoDtainm nt
Type Equip: OCB - 30 Tank ' 1,740 N/A N/A No
Oper. Nm. : Bridgewater White Rupture
Manuf. : General Electric
Serial # : K-6566146JV-307
Voltage : 100 KV
# tanks : 3
# gal/tank: 580
Type Equip: OCB - 30 Tank 1 ,740 N/A N/A No
Oper. Nm. : Bridgewater Black Rupture
Manuf. : General Electric -
Serial # : K-6566146JV-304
Voltage : 100 kV
# tanks : 3
`
# gal/tank: 580
Type Equip: OUR - 30 Tank 2,220 N/A N/A No
Oper. Nm. : Bank #1 H.T. Rupture
Manuf. : Westinghouse '
Serial # : 33Y2662
Voltage : 100 KV
# tanks : 3
# gal/tank: 740
Type Equip: OCB - 30 Tank 1,740 ' N/A N/A No
Oper. Nm. : Bank #3 H.T. Rupture '
Manuf. : Allis Chalmers
Serial # : 31255-35
Voltage : 100 KV
# tanks : 3
# gal/tank: 580
Type Equip: OCB - 30 Tank 2,100 N/A N/A No
Oper, Nm. : Bank #2 H.T. Rupture
Manuf. : Allis Chalmers
Serial # : 291900
Voltage : 100 KV
# tanks : 3
# gal/tank: 708
Name of facility: Bridgewater Hydro
Operator: J~ P. McLean - Hydro Station Gupervisor
' Page 9 of 1�
1R10080
`

710
Location of coil containers: Switchyard Page 4 of 4
Total
Major Type Quantity Rate Direction Secondary
Source of Failure rgals) (gals/hr) of Flow Containment
Type Equip: OCB Tank 450 N/A N/A No
Open. Nm. James Line Rupture'
Manuf. Westinghc<<:ise
Serial # 1-3'l2294
Voltage 44 KV
# tanks 3
# gal/tank: 15
Type Equip: Tank Tank 2,200 N/A N/A No
Oper. Nm. ail Storage Rupture
Mainuf.. a
Serial #
Voltage
# tanks i
# gal/tank: 2200
Type Equip: 3 - P.T.s Tank 180 N/A N/A No
Oper. Nm. 100 KV
Man!s f. ,
Seriai #
Voltage . 100 KV
# tanks 3
# gal/tank: 60
Type Equip: 2 - P.T.= Tarrk. 24 N/;• NfA No
Oper. Nm, 44 K.*V Rupture
Manua . ,
Serial #
Voltr;ge 44 KV
# tanks 2
# gal/tarok: 12
An oil Spill in the switchyard either from the transformers or breakers will flow to
a storm drain next to the plant. Drains will be plugged with rags wrapped in plastics
and sandbags will be used to Stop the coil before it reaches the drains. Excess _,)-_
will be cleaned up with rages. and Oil Dri .
It oil should reach the tailrace, it will be contained with an oil boom and -leaned
up using Fiber Pearl and ?__,awed. If additional material is neer_. ds it will __
obtained -o Lake ` Marshall ,all �r River band, -xh_r� absorbent materials and :a
CJ lned from 111 � F-. Norman,i�g ',c; t' p : (•: ,j, .-c
beat and trailer are stored.
Name of facility: Bridgewater Hydro
Operator: J. H:%dr c: 'Station Supervisor
(Part i) Raga 10 of i..

r`
G. Containment or diversionary structures or equipment to prevent oil from reaching
navigable waters are practicable. (If NQ complete Attachment #2) .
No
9. Inspections and Records
A. The required inspections follow written procedures.
No
H. The written procedures and a record of inspections, signed by the appropriate
supervisor or inspector, are attached.
No
Discussion:• All equipment at this plant, both 'inside and outside, is
s' inspected several times each day and {noted on a station log
sheet. Any malfunction would be reported and corrected. A
malfunction between inspections would manifest itself as an
alarm or power interruption.
10. Personnel, Training, and Spill Prevention Procedure
A. Personnel are properly instructed in the following:
(1) operation and maintenance of equipment to prevent oil discharges; and
Yes
(2) applicable pollution control laws, rules, and regulations.
Ye_
Describe procedures employed for instruction:
Regular .review of procedures by Hydro Station Supervisor with
local personnel .
B. Scheduled prevention briefings for the operating personnel are conducted
frequently enough to assure adequate understanding of the SPCC Plan.
Yes
r•.._`_._ r.__
Describe i��e briefing program:
i!!:
.c plan is discussed and reviewed by area Hydro Manager.
.
Name of facility.: Bridgewater Hydra: Plant
Operator: J. P. McLean - Hydro Station Supervisor

PART Ii. ALTERNATE A
DESIGN AND OPERATING INFORMATION
ONSHORE FACILITY (:EXCLUDING PRODUCTION)
A. Facility Drainage
1 . Drainage from diked storage areas is controlled as follows ( include operating
description f vl o of G h _
5 p��mp`.. ejectors,��t ._9 etc. (Note:Lote e. Flapper-type valves
should not be used) :
N/A
2. Drainage fr+, undiked areas is controlled as follows (include description of
ponds, lagoons, or catchment basins and methods of retaining and returning oil
to facility) :
N/A
v. The procedure for supervising the drainage of rain water from secondary
containment into a storm drain or an open Watercourse is as follows (include
description of (a) inspection for pollutcnts, and W method of halving
security. (A record of inspection and drainage events is to he maintained can
a form similar to Attachment #
N/A
Name of facility: Bridgewater Hydro Plant
Opera<-or. K P. Mct _an - Hydre Station Supervisor

� "P"p�m 1�h t�N 4Ef
B. Bulk Storage 'Tank f �
1. Describe tank: design., materials of construction, fail-safe engineering
features, and if needed, corrosion protection:
N/A
2. Describe secondary containment design, construction materials, and volume:
N/A
D. Describe tank inspection methods, procedures, and record keeping:
N/A
4. Disposal facilities for plant effluents discharged into navigably_ waters are
observed frequently for indication of passible upsets which may cause an oil
spill event.
Describe method and frequency of observations:
N%h
Name o f facility;lit'
Jam_ i T_ i �. ) ridc�a�;aLer :,y.�•;;; =�i.
Operator-
J . . . f cLea'FI - Hydro _ ."t-on Supervisor
'Pa_', 77 . ,

f
C. Facility Transfer Operations, Pumping5 and In-plant Process
I . Corrosion protection for buried pipelines:
(a) Pipelines are wrapped and .coated to reduce corrosion.
N/A
S
(b) Cathodic protection is provided for pipelines if determined necessary by
electrolytic testing.
N/A
(c) When a pipeline section is exposed, it is examined and corrective action
taken as necessary.
N/A
2. Pipeline teyiminal connections are capped or blank-flanged and marked if the
pipeline is not i Service or on standby service for extended periods.
N/A
Describe criteria for determining when to rap or blank:-flange:
3. Pipe supports are designed to minimize abrasion and orrosion.and allow for
expansion and contraction.
N/A
Describe pipe support design:
4. Describe procedures for regularly examiining all abov C n d valves a nv
Pipelines 'including flange joints, valve glands and i`odies-: catch pa'.ns<
p rypell iI.e supports locking of 4alves5 and metal surfaces) :
See F'- rt #15 Section 9 Discussion.
.J. Descr_Ne procedures or warming vehicles ente-ring a._L f�r� iity to atvC•i_j
damaging abovegl ou-1-1L. -_j, g: U
Name of facility. Bridge;r.ate:- Hydrr_. Plant
Operator: J. P. McLran - Hydro Station Supervisor
^8't !I , Alternate A) P"g` 3 _f -

D. Facility Tank Car & Tank Truck Loading/Unloading rack
r Tana; car and tank truck loading/unloading occurs at the facility. (If YES,
complete 1 through 5_ below! .
N/A
I. Loading/unloading procedures meet the minimum requirements and regulations of
the Department of Transportation.
NIA
2. The unloading area has a quick drainage system.
N/A
3. The containment system will hold the maximum capacity of any single
compartment of a tank truck loaded/unloaded in the plant.
r
S
N/A
Describe containment system, design, construction materials, and volume:
N/A
4. An interlocked warning Might, a physical barrier system, or warning signs are
provided in loading/unloading areas to prevent vehicular departure before
disconnect of transfer lilies.
N/A
Describe methods, procedures, and/or equipment used to prevent premature
vehicular departure:
N/A
5. Drains and outlets on tank trucks and tan:w cars are checked for leakage bt?;;r_,
loading/unloading or departure. _
N/A
Name of facility: Bridgewater Hydra Plant
1perdtl C i': J. N. McLean - Hydro Station Supervisor
;Pal " Its , Alr•ei'tnete A) Page 4 _=

E: Security
I . Plants handling, processing or storing oil are fenced.
Yes
2. Entrance gates are locked and/or guarded when the plant is unattended or not
in production.
N/A
3. Any valves which permit direct outward flog of a tank's contents are locked
closed when in 'nonoperating or standby status.
No
4. Starter controls on all oil pumps in nonoperating or standby status are:
(a) locked the off position.
N
(b) located at site accessible only to authorized personnel .
Yes
5. Discussion of items i through 4 as appropriate:
Item 2 - the plant is manned 24 hours a day.
6. Discussion of the lighting around the facility:
The substation and the plant are lighted at night so that
inspections can be made.
Name of facility: Bridgewater Hydro Plans
Operator: J. P. McLean - Hydro Station Supervisor
t
(Part i i , Alternate;nate :,) F'eii7e 5 of

SPCC PLAN, ATTACHMENT NO. 1
SPILL HISTORY
(Complete this form for any reportable spills? which has (have) occurred from this
facility since January 10, 1974 into Catawba River _ _ navigable eater) .
I. Date: May 2, 1988 ___-- Volume: 8U al.
Cause: Oil pump failure causing sump tank to overflow.
Corrective action taken: Floor drains plugged to contain spill within plant,
oil dry and fiber pearl used to cleanup spill within
plant, conwed used to clean up spilled _ail from
tailrace.
Plans for ;preventing recurrence: Equipment was repaired, periodic inspections
and preventative maintenance performed.
2. Date: June le, 1988 _-- Volume: C?,O lint
Causer Rupture of water line, discharged water uwashed° equipment and floor
in basement, water and oil mixture drained into tailrace.
Corrective action taken: dater lime was repaired.
Plans for preventing recurrence: Periodic inspections.
Name of facility: Bridgewater Hydro Plaini-
i:pera,t-0 J . P. McLean - Hydro `.4;t,,ti_n :�,upe.'`1:sor
(Attachment #=i , `-' C �1 -

t p
fi I b�E4 �
b
SPCC PLAN, ATTACHMENT N0. 2
OIL SPILL CONTINGENCY PLANS AND
WRITTEN COMMITMENT OF MANPOWER
Secondary containment or diversionary structures are impracticable for this facility
,
for the fallowing reasons (attach additional pages if necessary):
(1 ) Hydro Plants must have a continuous flow of cooling water for
)earings,
etc. This is an open loop system where the cooling water is ret=
'ned to
the river.
tipment, coil (2) Due to the frequent inspections of the plant and associated ec
e5 the spills could be detected early and; therefor, this greatly imps_
'
probability of complete containment.
t
MANPOWER AND MATERIAL
There will be from 1 to 10 persons available to help, contain oil spills. The
manpower required will depend on the time and severity of the spill .
The following material is available at the plant:
KY Oil Dri
(2) Fiber Pearl
3) Conwed
(4) Rags
if additional material is needed, it will be obtained at Lake Norman, Rive bend, or
Marshall, where they have absorbent material and a boat and trailer with booms.
A strong coil soill cOntinge;ncY plan is attached.
Yes
A written commitment of manpower is attached.
See above.
Name of facility: Bridgewater Hydro
s... l: -. _...

SOC PRTORITY JECT: Yes
No X
IF YES, SOC NUMBER
TO: PERMITS AND ENGINEERING UNIT
WATER QUALITY SECTION
ATTENTION: Susan Robson
DATE: May 2.4, 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 conducted
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' 15"
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 If No, explain:
8. Topography (relationship to flood plain included) : no site visit
\ Page 1

9 . Location of nearest dwelling: no site 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 Pre parer
ater Quality Regional Supervisor
Dat

UNITED STATES
DEPARTMENT OF THE INTERIOR
GEOLOGICAL SURVEY
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APR 30 199:$
State of North y � � �c
o th Carolina VMATER gUALIT� 9EC,SQ
Department of Environment, Health and Natural t REGIONAL OF�t�E
Division of Environmental Management
512 North Salisbury Street • Raleigh, North Carolina 27611
James B. Hunt, Jr. JonathanB, Howes
Governor Secretary
April 29, 1993
Timothy Huffman, P.E.
Duke Power Company
13339 Hagers Ferry Road
Huntersville,NC 28078
Subject: NOI Application
NPDES NCG500102
Bridgewater Hyrostation
Burke County
Dear Mr. Huffman:
This letter is to acknowledge receipt of your application dated April 12, 1993 for coverage under
General Permit for non-contact cooling water. The permit number highlighted above has been assigned to
the subject facility. By copy of this letter, we are requesting that our Regional Office Supervisor prepare a
staff report and recommendations regarding this discharge.
If you have questions regarding this matter, please contact Susan Robson at(919) 733-5083.
Sincerely,
Coleen Sullins, P.E.
Supervisor, NPDES Group
Mornn i Wts and Engineering Unit
Central Files
Regional Offices
Asheville Fayetteville Mooresville Raleigh Washington Wilmington Winston-Salem
704/251-6208 919/486-1541 704/663-1699 919/571-4700 919/946-6481 919/395-3900 919/896-7007
Pollution Prevention Pays
P.O.Box 29535,Raleigh,North Carolina 27626-0535 Telephone [phone]
An Equal Opportunity Affirmative Action Employer

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MAY I
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State of North Carolina LI!,' I'VATER ALIT SECTION
Department of Environment, Health and Natural R NA[ OFFICE
Division of Environmental Management
512 North Salisbury Street• Raleigh,North Carolina 27611
James G. Martin,Governor . A.Preston Howard,Jr.,P.E.
William W.Cobey,Jr.,Secretary Acting Director
NOTICE OF INTENT
National Poll iranr n; ha ge Fliminar_inn ycrem
Application for Coverage under General Permit NCG500000;Non-contact cooling water,boiler blowdown,
cooling tower blowdown,condensate,and similar point source discharges.
I. Na.►ne,At-id.rese,! ?tioai,ar,,.4:&,, plio..e nw-ifo r of aciiity mquesting Permit.
A. Official Name: Duke Power Co, - Bridgewater Hydro Station
B. Mailing Address: c o G - Water r o e c 1 o n
(1)StreetAddress, 13339 Hagers Ferry
(2)City; Hunt r Ville. N.C.
(3)State; _N(
(4)Zip; 22072-7929
(5)C«mty; _M o c k l P n b lm
C. Location.(Attach map delineating general fac ty local'
(1)SuwAddress-, Route Box 19y
(2)City; Morganton
(3)State; N r
(4)County; _Ruv Lc
D. Telephone Number, C�h ) S 24_1451
2. Facility Contact:
A. Name; J.P. McLean
B. Title; uppryi sor
C. Company Name; nn ke Pntlar .n
D. Phone Number, ( 704 ) 584 101
3. Application type(check appropriate selection):
A. New or Proposed; x
R. ExisFthig; Tf p.„„ sly p— ... ,,,,
�+ L vravriaa aaatiiri. ''� • �Y J Y ,lsavviu�.pea~n2.iiw:2uvi
C. Modification; and issue date
(Describe the nature of the modification):
4. Description of discharge
A.Please state the number of separate discharge points.
U] ; 2,R]; 3,[] ; 4,[1 ; —,[]•
B.Please describe the amount of wastewater being discharged per each separate discharge point 1:17 2 8*
gallons per day(gpd) 2;�(mod)**3: (gpd) 4: (gpd)
*Based on 1.2 GPM, total possible maximum flow
**Based on 1.7 GPM, total possible maximum flow
Page 1

C.Check the duration and ftC�y of the discharge;per each separate disc t:
1. Continuous:—
(V Intermittent (please describe):— Only when unit operates
3. Seasonal(check month(s)the discharge occurs):January[];February[];March[];April
May[];Jane[];July[]; August[]-
September October[];November December
4. How many days per week is there a discharge?(check the days the discharge occurs)
Monday[], Tuesday[]. Wednesday Thursday[],Friday 11, Saturday 11, Sunday I I.
Discharge can occur any day
5. How much of the volume discharged isveated?(state in percent)
D. 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 desm'be);
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.):
e- -14,r 0 Ij-10H ,
F. Please check the ty
pe of chemical added to the wastewater for treament 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 PeUnit.
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, Electrical Power
Generation Facility
6. Name of receiving water. Catawba River — Classification: WS-Iii
(Attach a USGS topographical map with all discharge point(s)clearly marked)
Page 2

.-Sedirectly to the receiving water?(Y,N) Y
_.-,o, 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 flow
C.Spray Irrigation; Not justifiable, water carries no pollutants nor any detectable thermal
gradient.
9. I 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 M. D. McIntosh
Title V.P , Fossil & Hydro y Producti on
Date Application Signed ` f
Signature of Applicant
NORTH C.AROLINA GENERAL STATUTE 143-215.6B fil PROVIDES THAT:
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$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

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001
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UNIT 1
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PENSTOCK BYPASS POWERHOUSE PLAN
VALVE
LEGEND
001 UNIT 1 GENERATOR LUBE OIL COOLER WATER DISCHARGE
002 UNIT 2 GENERATOR LUBE OIL COOLER WATER DISCHARGE
OR I0. F
ERN: NO.
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002 001
NORMAL T . Wo
EL . 1065. 0'
q UNIT 2 q UNIT 1
POWERHOUSE ELEVATION
DUKE POWER COMPANY
BRIDGEWATER HYDRO STATION
NATIONAL POLLUTANT DISCHARGE
ELIMINATION SYSTEM ( NPDES)
POINT SOURCE DISCHARGES
DESIGNER DATE INSP. DATE
4SED FOR NPDES APPLICATION EHC 3-19 DRAWNE• H. CADDELL DATE 3-19-93 INSP. DATE
-93 CHECKED DATE APPR. DATE
CIVIL ELEC. MECH.
REVISIONS ORN DATE CHKD DATE APPR DATE IrvsPECTEo DWG. NO. NY—NPDES REV.