NC0081949_Permit (Issuance)_20140214

NPDES DOCIMENT !;CANNINL COVER SHEET
NPDES Permit:
NC0081949
Tuckertown Powerhouse
.
Document Type:
Permit Issuance
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification
Complete File - Historical
Engineering Alternatives (EAA)
Staff Report
Instream Assessment (67b)
Speculative Limits
Environmental Assessment (EA)
Document Date:
February 14, 2014
Thits document its printed on reuse paper - ignore any
content on the reYeriete "side

AIM
NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Resources
Water Quality Programs
Pat McCrory Thomas A. Reeder John E. Skvarla, III
• Governor Director Secretary
February 14, 2014
Mr. Mark J. Gross
Vice President, Hydro Operations, APGI
Alcoa Power Generating, Inc.
P.O. Box 576
Badin, North Carolina 28009
Subject: Issuance of NPDES Permit
• Permit NC0081949
Tuckertown Powerhouse
Stanly County
Facility Class I
Dear Mr. Gross:
• Division personnel have reviewed and approved your application for a renewal of the subject
permit. Accordingly, we are forwarding the attached NPDES discharge 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 U.S. Environmental Protection Agency dated October 15,
2007 (or as subsequently amended).
The following changes have been incorporated into this renewal:
• Proposed federal regulations require electronic submittal of all discharge monitoring reports (DMRs)
and specify that, if a state does not establish a system to receive such submittals, then permittees must
submit DMRs electronically to the Environmental Protection Agency (EPA). The Division anticipates
that these regulations will be adopted and is beginning implementation.
The requirement to begin reporting discharge monitoring data electronically using the NC DWR's
Electronic Discharge Monitoring Report (eDMR) Internet application has been added to your
NPDES permit. [See Special Condition A. (4)] For information on eDMR, registering for eDMR
and obtaining an eDMR user account, please visit the following web page:
http: / /portal.ncdenr.org/web /wq/admire/bog/ipu/edma:.
1617 Mail Service Center, Raleigh, North Carolina 27699-1617
Location: 512 N. Salisbury St. Raleigh, North Carolina 27604
Phone: [phone] FAX: [phone]
Internet www.ncwaterquality.orq
An Equal opportunity 1 Affirmative Action Employer
No"ethCaro a
aturallff

For information on EPA's proposed NPDES Electronic Reporting Rule, please visit the following
web site:
http: / /www2.epa.gov/compliance/proposed-npdes-electronic-reporting-rule.
If any parts, measurement frequencies or sampling requirements contained in this permit are
unacceptable to you, you have the right to an adjudicatory heating upon written request within thirty (30)
days following receipt of this letter. This request must be in the form of a written petition, conforming
to Chapter 150B of the North Carolina General Statutes, and filed with the Office of Administrative
Hearings (6714 Mail Service Center, Raleigh, North Carolina 27699-6714). Unless such demand is made,
this decision shall be final and binding.
Please note that this permit is not transferable except after notice to the Division. The Division
may require modification or revocation and reissuance of the permit. This permit does not affect the legal
requirements to obtain other permits which may be required by the Division of Water Resources or permits
required by the Division of Land Resources, the 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 Sergei Chernikov at telephone number [phone].
cc: Central Files
NPDES Files
Mooresville Regional Office / Water Quality
Sincerely,
Thomas A. Reeder
♦

Permit NC0081949
• STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES .
DIVISION OF WATER RESOURCES
PERMIT
• TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provision of North Carolina General Statute 143-215.1, other. lawful standards and
regulations promulgated and adopted by the North Carolina Environmental Management Commission, and
the Federal Water Pollution Control Act, as amended,
Alcoa Power Generating, Inc.
is hereby authorized to discharge wastewater from a facility located at the
Tuckertown Powerhouse
711 Tuckertown Road
New London
Stanly County
to receiving waters designated as Yadkin River in the Yadkin -Pee Dee River Basin in accordance with
effluent limitations, monitoring requirements, and other applicable conditions set forth in Parts I, II, III and
IV hereof. •
This permit shall become effective March 1, 2014.
This permit and authorization to discharge shall expire at midnight on January 31, 2019.
Signed this day February 14, 2014.
Thomas A. Reeder, Director
Division of Water Resources
By Authority of the Environmental Management Commission
Page 1 of 6

Permit NC0081949
SUPPLEMENT TO PERMIT COVER SHEET
All previous NPDES Permits issued to this facility, whether for operation or discharge are hereby revoked.
As of this permit issuance, any previously issued permit bearing this number is no longer effective.
Therefore, the exclusive authority to operate and discharge from this facility arises under the permit
conditions, requirements, terms, and provisions included herein.
Alcoa Power Generating, Inc. is. hereby authorized to:
1. Continue to discharge once -through cooling water from outfalls 001, 002 and 003, and water from a
sump drain (Outfall 004) located at the Tuckertown Powerhouse [711 Tuckertown Road, New
London] in Sttnly County. -
2. Discharge from said treatment works at the location specified on the attached map into the Yadkin
River, currently classified as WS-N & B CA waters in the Yadkin -Pee Dee River Basin.
Page 2 of 6
0

Permit NC0081949
Part I
A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
[001 / 002 / 003]
During the period beginning on the effective date of the permit and lasting until expiration, the Permittee is
authorized to discharge once -through cooling water from outfalls 001, 002 and 003. Such discharges shall be
limited and monitored3 by the Permittee as specified below:
PARAMETE
R
DISCI -LARGE LIMITATIONS
Monitoring Requirements
Monthly
Average
Daily
Maximum
Effluent Measurement
Frequency
Sample Type
Sample
Location*
Flow (MGD)
Annual -
Estimate
Effluent
Temperature'.
Annual
. Grab
Effluent
pH2
Annual
Grab
Effluent
NOTES:
* Effluent or at the point closest to discharge where a representative sample of the discharge can feasibly
be obtained.
1. The temperature of the effluent will be regulated so that the temperature of the receiving stream does not
increase by more than 2.8 °C above the natural water temperature. In no case should the receiving .
stream temperature exceed 32 °C due to the facility's operation. Temperature of the effluent may be
obtained anywhere downstream of the heat exchanger effluent that is representative of the discharge.
2. The pH of the effluent shall not be less than 6.0 standard units nor greater than 9.0 standard units, unless
ambient river conditions prevent compliance with this range.
3. No later than 270 days from the effective date of this permit, begin submitting discharge monitoring
reports electronically using NC DWR's eDMR application system. See Special Condition A. (4.).
Monitoring results obtained during the calendar year shall be recorded and reported on a Discharge Monitoring
Report (DMR) form and postmarked no later than January 30th following the completed reporting period. Samples
obtained for monitoring purposes may be collected anytime during the calendar year.
There shall be no discharge of floating solids or visible foam (other than trace amounts) in the effluent, unless
ambient river conditions prevent compliance.
A. (2.) BIOCIDE CONDITION
There shall be no chromium, zinc or copper added to the treatment system except as pre -approved additives
to biocidal compounds.
The permittee shall obtain approval from the Division's Aquatic Toxicology Unit prior to the use of any biocide (not
previously approved by the Division) in the effluent discharged under this permit. -Approval for use of any biocide
not previously approved should be requested at least 90 days in advance of any planned usage.
Contact the Aquatic Toxicology Unit for detailed instructions on requesting approval of biocides:
NC DENR / DWR / Aquatic Toxicology Unit
1621 Mail Service Center
Raleigh, North Carolina 27699-1621
Page 3 of 6

Permit NC0081949
A. (3.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS [004]
During the period beginning on the effective date of the permit and lasting until expiration, the Permittee is
authorized to discharge sump water from outfall 004 [Sump Drain]. Such discharges shall be limited and monitored3
by the Permittee as specified below:
PARAMETER
.n; DISCI-IARGE :444.
LIMITATIONS
Monitoring Requirements
Monthly
Averages___.,,
Daily
Maximum
Measurement
Frequency
Sample
Type
Sample
Location
Flow
Annual
Estimate
Effluent
Oil and Greaser
15.0 mg/L
20.0 mg/L
Annual
Grab
• Effluent
pH2
Annual
• Grab
Effluent
NOTES:
* Effluent or at the point closest to discharge where a representative sample of the discharge can feasibly
be obtained.
1. The tailrace shall be visually inspected for oil sheen attributed to facility operations on a weekly basis in
conjunction with inspections of the floor sump and rope skimmer. Confirmation that a visual
inspection was conducted shall be recorded in the operating log for the facility and provided to the
Division upon request.
2. The pH of the effluent shall not be less than 6.0 standard units or greater than 9.0 standard units,
unless ambient river conditions prevent compliance with this range.
3. No later than 270 days from the effective date of this permit, begin submitting discharge monitoring
reports electronically using NC DWR's eDMR application system. See Special Condition A. (4.).
Best Management Practices (BMPs) must be employed to ensure that excessive pollutants are not discharged to the
surface water of the state. These practices should include as a minimum, routine maintenance of the rope skimmer
type oil/water separator and cleaning accumulated sediment in the bottom of the sump annually.
Chemical wheel pit leaning is permitted on a monthly basis. When wheel pit cleaning occurs, the tailrace shall
be inspected visually for foam and oil. Cleaning shall be conducted only with pre -approved solvents. Should
the Permittee wish to change solvents, a written request should be made to the Division including the MSDS
for the proposed solvent.
Mechanical leaning operations, which do not contribute any wastewater to the discharge are not limited by this
permit. Non -discharging leaning operations may be conducted as often as necessary to ensure safety and
proper facility operation.
Monitoring results obtained during the calendar year shall be recorded and reported on a Discharge Monitoring
Report (DMR) form' and postmarked no later than January 30th following the completed reporting period.
Samples obtained for monitoring purposes may be collected anytime during the calendar year.
There shall be no discharge of floating solids or visible foam (other than trace amounts) in the effluent, unless
ambient river conditions prevent compliance.
Page 4 of 6

Permit NC0081949
A. (4.). ELECTRONIC REPORTING OF DISCHARGE MONITORING REPORTS
Proposed federal regulations require electronic submittal of all discharge monitoring reports (DMRs) and specify that,
if a state does not establish a system to receive such submittals, then permittees must submit DMRs electronically to •
the Environmental Protection Agency (EPA). The Division anticipates that these regulations will be adopted and is
beginning implementation in late 2013.
NOTE: This special condition supplements or supersedes the following sections within Part 11 of this permit
(Standard Conditions forNPDES Permits):
• Section B. (11)
• Section D. (2)
• • Section D. (6.)
• Section E. (5.)
Signatory Requirements
Reporting
Records Retention
Monitoring Reports
1. Reporting [Supersedes Section D. (2.) and Section E. (5.) (a)].
Beginning no later than 270 days from the effective date of this permit, the permittee shall begin reporting
discharge monitoring data electronically using the NC DWR's Electronic Discharge Monitoring Report (eDMR)
internet application.
Monitoring results obtained during the previous month(s) shall be- summarized for each month and submitted
electronically using eDMR. The eDMR system allows permitted facilities to enter monitoring data and submit
DMRs electronically using the internet. Until such time that the state's eDMR application is compliant with
EPA's Cross -Media Electronic Reporting Regulation (CROMERR), permittees will be required to submit all
discharge monitoring data 'to the state electronically using eDMR and will be required to complete the eDMR
submission by printing, signing, and submitting one signed original and a copy of the computer printed eDMR to
the following address: .
NC DENR / DWR / Information Processing Unit
ATTENTION: Central Files / eDMR
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
If a permittee is unable to use the eDMR system due to a demonstrated hardship or due to the facility being
physically located in an area where less than 10 percent of the households have broadband access, then a
temporary waiver from the NPDES electronic reporting requirements may be granted and discharge monitoring
data may be submitted on paper DMR forms (MR 1, 1.1, 2, 3) or alternative forms approved by the Director.
Duplicate signed copies shall be submitted to the mailing address above.
Requests for temporary waivers from the NPDES electronic reporting requirements must be submitted in writing
to the Division for written approval at least sixty (60) days prior to the date the facility would be required under
this permit to begin using eDMR. Temporary waivers shall be valid for twelve (12) months and shall thereupon
expire. At such time, DMRs shall be submitted electronically to the Division unless the permittee re -applies for
and is granted a new temporary waiver by the Division.
Information on eDMR and application for a temporary waiver from the NPDES electronic reporting
requirements is found on the following web page:
http://portal.ncdenr.org/web/wq/admin/bog/ipu/edmr
Regardless of the submission method, the first DMR is due on the last day of the year following the issuance of
the permit or in the case of a new facility, on the last day of the month following the commencement of
discharge.
• Page 5 of 6

Permit NC0081949
2. Signatory Requirements [Supplements Section B. (11.) (b) and supersedes Section B. (11.) (d)]
All eDMRs submitted to the permit issuing authority shall be signed by a person described in Part II, Section B.
(11.)(a) or by a duly authorized representative of that person as described in Part II, Section B. (11.)(b). A person,
and not a position, must be delegated signatory authority for eDMR reporting purposes.
For eDMR submissions, the person signing and submitting the DMR must obtain an eDMR user account and
login credentials to access the eDMR system. For more information on North Carolina's eDMR system,
registering for eDMR and obtaining an eDMR user account, please visit the following web page:
http://portal.ncdenr.org/web/wq/adr in/bog/ipu/edmr
Certification. Any person submitting an electronic DMR using the state's eDMR system shall make the following
certification [40 CFR 122.22]. NO OTHER STATEMENTS OF CERTIFICATION WILL BE ACCEPTED:
"I certify, underpenaly of law, that this document and all attachments were prepared under my direction or supervision in accordance
with a system designed to assure that qual fled personnel properlygather and evaluate the information submitted Based on my inquiry
of the person or persons who manage the system, or those persons directly responsible forgatheringthe information, the information
submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are signfcantpenalties for
submitting false information, including the po rsibiliiy of fines and imprisonment for knowing violations."
3. Records Retention [Supplements Section D. (6)]
The permittee shall retain records of all Discharge Monitoring Reports, including eDMR submissions. These
records or copies shall be maintained for a period of at least 3 years from the date of the report. This period may
be extended by request of the Director at any time [40 CFR 122.41].
Page 6 of 6
O

Facility Information
Latitude: 35°29'07"
Longitude: 80°10'34"
Quad#: F18NW
Stream Class: WS-IV and C CA
Receiving Stream: Yadkin River
Permitted Flow: N/A
Sub -Basin:
03-07-08
North
Yadkin Inc.
NC00081949
Tuckertown Powerhouse

Chernikov, Sergei
From: Chernikov, Sergei
Sent: Tuesday, January 14, 2014 8:03 AM
To: 'Van Der Meyden, Henk'
Subject: RE: RE: RE: APGI Yadkin NPDES Permit Renewal
Henk,
Most of the comments are simple corrections. The two major comments are about temperature and electronic
reporting. The paper DMR are still required until the electronic signature issue is resolved. We are planning to keep the
temperature requirement as well to make sure that the instream standard is protected.
Thank you!
Sergei
Sergei Chernikov Ph.D.
Environmental Engineer II
Complex NPDES Permitting Unit
Tel. [phone]
Fax [phone]
Mailing Address: 1617 Mail Service Center, Raleigh, NC 27699
Physical Address/Express Mail: 512 N. Salisbury St., Raleigh, NC 27699-1617
From: Van Der Meyden, Henk [mailto:Henk.VanDerMeydenOalcoa.com]
Sent: Tuesday, January 14, 2014 7:36 AM
To: Chernikov, Sergei
Subject: RE: RE: RE: APGI Yadkin NPDES Permit Renewal
Sergei,
Thanks for the update. Any feel for how you plan to address our comments?
Henk
From: Chernikov, Sergei [mailto:sergei.chernikovOncdenr.gov]
Sent: Monday, January 13, 2014 12:56 PM
To: Van Der Meyden, Henk
Cc: Gross, Mark
Subject: EXT: RE: RE: APGI Yadkin NPDES Permit Renewal
Henk,
We have not received any other comments except yours. There is a mandatory 45 days period between the
public notice and the permit issuance. We should be able to issue your permits by the end of the month.
Thank you!
Sergei
Sergei Chernikov Ph.D.
1

MEMORANDUM
To:
December 3, 2013
Britt Setzer, Regional Engineer
NC DENR / DWR / Public Water Supply Section
Mooresville Regional Office
From: Sergei Chernikov, Environmental Engineer II, Complex NPDES Unit,
Division of Water Resources (fax-919-807-6495)
Subject: Review of the discharge locations for the following Draft NPDES permits:
NC0081931 High Rock Powerhouse
NC0081949 Tuckertown Powerhouse
NC0081957 Narrows Powerhouse
NC0076775 Falls Powerhouse
Stanly County and Rowan County
Please indicate below by January 3, 2013 your agency's position or viewpoint on the facility
listed above. We cannot issue the permit without your concurrence. Please return this form
at your earliest convenience.
RESPONSE:
This agency has reviewed the draft permit and determined that the proposed
discharge will not be sufficiently close to any existing or known proposed
public water supply intake so as to create an adverse effect on water quality.
We concur with the issuance of this permit provided the facility is operated
and maintained properly, the stated effluent limits are met prior to discharge,
and the discharge does not contravene the designated water quality standards.
Concurs with issuance of the above permit, provided the following conditions
axe met
Opposes the issuance of the above permit, based on reasons stated below, or
attached:
Signed Date: ty2//ZO/3
cc: file

North Carolina
Mecklenburg County
} ss
}
The Charlotte Observer Publishing Co.
Charlotte, NC
Affidavit of Publication
Charlotte Observer
REFERENCE: 145583 NCDENR/DWQ/POINT SOURCE
0000791536 Public Notice North Carolina Environmental
Management Commission/NPDES Unit 1617
Mail Service Center Raleigh, NC 27699-1617
Before the undersigned, a Notary Public of said County and
State, duly authorized to administer oaths affirmations, etc.,
personally appeared, being duly sworn or affirmed according
to law, doth depose and say that he/she is a representative of
The Charlotte Observer Publishing Company, a corporation
organized and doing business under the laws of the State of
Delaware, and publishing a newspaper known as The
Charlotte Observer in the city of Charlotte, County of
Mecklenburg, and State of North Carolina and that as such
he/she is familiar with the books, records, files, and business
of said Corporation and by reference to the files of said
publication, the attached advertisement was inserted. The
following is correctly copied from the books and files of the
aforesaid Corporation and Publication.
PUBLISHED ON: 11/26/2013
AD SPACE: 37 LINES
FILED ON: 11/27/2013
NAME:
-11/14 QL7 TITLE'. C-C-&ts
DATE:
In Testimonhereof I have hereunto set my han . = nd affixed my seal, the day and year aforesaid.
r
My commission Expires: / /

DENR/DWR
FACT SHEET FOR NPDES PERMIT DEVELOPMENT
NPDES No. NC0081949
Facility Information
.1pplicant/Facility Name:
Alcoa Power Generating, Inc.. /Tuckertown Powerhouse
Applicant Address:
PO Box 576, Badin, NC 28009-0576
Facility Address:
On NCSR 1164
Permitted Flow
Monthly Average —1,362,850 gpd
Type of Waste:
Once though cooling water and sump discharges.
Facility/Permit Status:
Renewal
County:
Stanly
Miscellaneous
Receiving Stream:
Yadkin River
Regional Office:
Mooresville
Stream Classification:
303(d) Listed?:
Subbasin:
WS-IV & B CA
NO
03-07-08
USGS Topo Quad:
Permit Writer:
Date:
F18NW
Sergei Chernikov, Ph.D.
November 18, 2013
Drainage Area (mi2):
Summer 7Q10 (cfs)
Winter 7Q10 (cfs):
Average Flow (cfs):
IWC (%):
Primary SIC Code:
4911
SUMMARY
This facility maintains 4 outfalls (001, 002, 003, and 004) With the exception of outfall 004 (sump
drain) the source of water for the other outfalls is once through cooling water.
The receiving stream, Yadkin River, is classified as WS-N and B CA waters, from a point 0.6 mile
upstream of the High Rock Lake Dam to the Badin Dam. This reach is not listed on the 303(d) list
as impaired water.
PERMIT LIMITS
• pH limits in the permit are based on the North Carolina water quality standards [15A NCAC
2B .0200].
• Temperature limits in the permit are based on the North Carolina water quality standards
[15A NCAC 2B .0200].
• Oil and Grease limits in the permit are based on the Best Professional Judgment. North Carolina
water quality standards [15A NCAC 2B .0200].
PROPOSED CHANGES
• Proposed federal regulations require electronic submittal of all discharge monitoring reports
(DMRs) and specify that, if a state does not establish a system to receive such submittals,
then permittees must submit DMRs electronically to the Environmental Protection Agency
(EPA). The Division anticipates that these regulations will be adopted and is beginning
implementation.
The requirement to begin reporting discharge monitoring data electronically using the NC
DWR's Electronic Discharge Monitoring Report (eDMR) internet application has been
added to the permit. [See Special Condition A. (4.)]
Alcoa Power Generating, Inc.
. Tuckertown Hydroelectric Powerhouse Fact Sheet
NPDES Renewal
Page 1

PROPOSED SCHEDULE FOR PERMIT ISSUANCE:
Draft Permit to Public Notice: December 3, 2013
Permit Scheduled to Issue: January 27, 2014
STATE CONTACT:
If you have any questions on any of the above information or on the attached permit, please contact
Sergei Chernikov at [phone] or [e-mail].
Regional Office Comments
Name: Date:
Alcoa Power Generating, Inc.
. Tuckertown Hydroelectric Powerhouse Fact Sheet
NPDES Renewal
Page 2

To: NPDES Unit
Water Quality Section
Attention: Charles Weaver
Date: August 16, 2013
SOC Priority Project: No
/4
NPDES STAFF REPORT AND RECOMMENDATION
County: Stanly
Permit No. NC0081949
PART I - GENERAL INFORMATION
Physical Address
1. Facility and address: Tuckertown Powerhouse 711 Tuckertown Rd.
Alcoa Power Generating, Inc. New London, NC 28127
P.O. Box 576
Badin, NC 28009
2. Date of investigation: July 18, 2013
3. Report prepared by: Wes Bell, Environmental Specialist
4. Persons contacted and telephone number: Jeff Henley, [phone]
5. Directions to site: From the junction of Hwy. 49 and SR 1164 (Tuckertown Rd.) on the western
edge of Montgomery County, travel south on SR 1164 approximately 1.6 miles. The
Tuckertown Powerhouse is located the right (west) side of the road.
6. Discharge point(s), list for all discharge points:
Latitude: 35° 29' 08"
Longitude: 80° 10' 32"
See USGS Map included with the renewal application for specific locations of all outfalls.
U.S.G.S. Quad No.: E 18 SW
7. Receiving stream or affected surface waters: Yadkin River.
a. Classification: WS-IV and B, CA
b. River Basin and Subbasin No.: Yadkin 03-07-08
c. Describe receiving stream features and pertinent downstream uses: The Yadkin River is
used for primary and secondary recreation and electricity generation. There are no
known water intakes several miles below this Powerhouse.

PART II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1. a. Volume of wastewater and description of wastewater source(s) of each outfall:
Outfalls 001, 002, & 003: 0.4536 MGD per outfall — Once through generator thrust
bearing cooling water.
Outfall 004: 0.001 MGD — Powerhouse floor drains, wheelpit drainage, oil/water
skimmer, and sump.
b. Please provide a description of existing or substantially constructed treatment facilities:
Outfall 004 is equipped with an oil/water separator (rope skimmer).
c. Possible toxic impacts to surface waters: There are no biocides added to the cooling
water and no chemical wheelpit cleaning at this facility.
2. Residuals handling and utilization/disposal scheme: The facility contracts a company (Ashland
Environmental) to remove any recovered oil or accumulated material on the sump bottom.
PART III OTHER PERTINENT INFORMATION
1. Special monitoring or limitations (including toxicity) requests: None requested.
PART IV - EVALUATION AND RECOMMENDATIONS
There have been no changes and/or modifications to this facility or the subject permit since the
permit was last issued.
It is recommended that the permit be renewed as requested.
V5 1
ignature of report preparer ate
Water Quality Regional Supervisor to

ALCOA
Alcoa Inc.
APGI - Yadkin
Highway 740
P4 Box 576
Badin, NC 28009
July 12, 2013 Certified Mail
Return Receipt Requested
N. C. Department of Environment and Natural Resources
Division of Water Quality
NPDES Unit
1617 Mall Service Center
Raleigh, North Carolina 27699-1617
Attn.: Mr. Charles H. Weaver
Re.: NPDES Permit Renewal Applications - Alcoa Power Generating, Inc
High Rock Powerhouse NC0081931
----Tuckertown Powerhouse NC0081949
Narrows Powerhouse NC0081957
Falls Powerhouse NC0076775
Dear Mr. Weaver:
With this letter and the attached renewal application package, Alcoa Power Generating, Inc.
(APGI) is requesting renewal of the NPDES discharge permits for the four hydroelectric
powerhouses identified above that are owned and operated by APGI The existing NPDES
discharge permits for these facilities are due to expire on January 31, 2014.
The renewal application package for each powerhouse contains the following items:
• Cover Letter - one signed original and two copies
• Completed NC Short Form C — one signed original and two copies
• Schematic of Water Flow — three copies
• Location Map — three copies
As per the instructions on the renewal application checklist, APGI is not aware of changes at any
of the four powerhouses that may have altered the nature or volume of the currently permitted
discharges. The wastewater treatment operations are limited to an oily water sump and rope
skimmer at the Tuckertown, Narrows and Falls Powerhouses. An oily water / used oil waste
stream is generated from the rope skimmers and the annual cleaning of the sumps. This waste
stream is managed off -site for energy recovery by a third party.

2
If you have questions or comments regarding this NPDES Permit Renewal Application Package,
please contact Henk van der Meyden at [phone] or via e-mail at
[e-mail].
Sincerely,
Mark J. oss
Vice -President, Hydro Operations
cc. Henk van der Meyden — w/attachments
renewal application transmittal letter to ncdenr dwq.docx

NPDES PERMIT APPLICATION - SHORT FORM C - Minor Industrial
Minor industrial, manufacturing and commercial facilities.
Mail the complete application to:
N. C. Department of Environment and Natural Resources
Division of Water Quality / NPDES Unit
1617 Mail Service Center, Raleigh, NC 27699-1617
1. Contact Information:
Owner Name
Facility Name
Mailing Address
City
State / Zip Code
Telephone Number
Fax Number
e-mail Address
NPDES Permit Number
NC0081949
Please print or type.
Alcoa Power Generating, Inc
Tuckertown Powerhouse
P.O. Box 576
Badin
N.C. / 28009
704-422-5774
704-422-5776
[e-mail]
2. Location of facility producing discharge:
Check here if same as above 0
Street Address or State Road
City
State / Zip Code
County
711 Tuckertown Road
New London
N.C. / 28127
Montgomery
3. Operator Information:
Name of the firm, consultant or other entity that operates the facility. (Note that this is not referring to the
Operator in Responsible Charge or ORC)
Name
Mailing Address
City
State / Zip Code
Telephone Number
Fax Number
Alcoa Power Generating, Inc
P.O. Box 576
Badin
N.C. / 28009
704-422-5774
704-422-5776
Page 1 of 5
C-MI 10/08

NPDES PERMIT APPLICATION - SHORT FORM C - Minor Industrial
Minor industrial, manufacturing and commercial facilities.
4. Ownership Status:
Federal ❑
State ❑
Private ® Public ❑
6. Standard Industrial Classification (SIC) code(s): 4911
6. Number of employees: 4
7. Describe the treatment system List all installed waste treatment components with capacities,
describe the processes that generate wastewaters. If the space provided is not sufficient attach a
separate sheet of paper with the system description.
See Attached Flow Diagram
8. Is facility covered under federal effluent limitation guidelines? No ® Yes
If yes, specify the category?
9. Principal product(s) produced: Electricity
Principal raw material(s) consumed: N/A
Briefly describe the manufacturing process(es):
Hydroelectric Generation
0
Page 2 of 5 C-MI 10/08

NPDES PERMIT APPLICATION - SHORT FORM C - Minor Industrial
Minor industrial, manufacturing and commercial facilities.
10. Amount of principal product produced or raw material consumed
List speci c amounts consumed and/or units of production over the last th.
Product Produced or Raw Material
Consumed
AVERAGE)
Product Produced or Raw Material
Consumed
(PEAK)
per Day
245 MWhr
1,020 MWhr
per Month
7,463 MWhr
31,025 MWhr
per Year
89,558 MWhr
372,300 MWhr •
11. Frequency of discharge: Continuous ® Intermittent ❑
If intermittent:
Days per week discharge occurs: Duration:
12. Types of wastewater discharged to surface waters only
Discharge
Flow
(GALLONS PER DAY)
Sanitary - monthly average
N/A
Utility water, etc. - monthly average
N/A
Process water - monthly average
1,050
Stormwater - monthly average
N/A
Other - monthly average
Explain: Cooling Water
1,361,800
Monthly Average
total discharge (all types)
1,362,850
13. Number of separate discharge points: 4
Outfall Identification number(s) 001, 002, 003, 004
14. Name of receiving stream(s) (Provide a map showing the exact location of each outfall, including
latitude and longitude):
Yadkin River latitude: 35° 29' 07.60" N; longitude: 80° 10' 32.17" W
Page 3 of 5
C-MI 10/08

NPDES PERMIT APPLICATION - SHORT FORM C - Minor Industrial
Minor industrial, manufacturing and commercial facilities.
15. Effluent Data [for new or proposed discharges]
Provide data for the parameters listed. Temperature and pH shall be grab samples, for all other parameters 24-hour
composite sampling shall be used. If more than one analysis is reported, report daily maximum and monthly average.
If only one analysis is reported, report as daily maximum.
NOTE: Permittees requesting renewal should complete the table ONLY for the parameters
currently monitored. Summarize the past 3 years of e, 'iuent data
Parameter
Daily
Maximum
Monthly
Average
Units of
Measurement
Biochemical Oxygen Demand (BOD5)
N/A
N/A
N/A
Chemical Oxygen Demand (COD)
N/A
N/A
N/A
Total Organic Carbon
N/A
N/A
N/A
Total Suspended Solids
N/A
N/A
N/A
Ammonia as N
N/A
N/A
N/A
Temperature (Summer)
N/A
N/A
N/A
Temperature (Winter)
30.3
18.3
Celsius
pH
8.1
*
Units
Fecal Coliform (If sanitary waste is
present)
N/A
N/A
N/A
TTotal ed Residual Chlorine (if chlorine is
N/A
N/A
N/A
es are not reported for pH since an arithmetic mean is not valid.
16. List all permits, construction approvals and/or applications (check all that apply and provide permit
numbers or check none if not applicable):
Type
Hazardous Waste (RCRA) N/A NESHAPS (CAA) N/A
UIC (SDWA) N/A Ocean Dumping (MPRSA) N/A
Permit Number Type
Permit Number
NPDES NC0081949 Dredge or fill (Section 404 or CWA) N/A
PSD (CAA) N/A Other N/A
Non -attainment program (CAA) N/A
17. List any chemicals that may be discharged (Please list and explain source and potential
amounts.)
Oil & Grease (Outfall 004 — previous 3 years of sample results were less than detection limit of 5 mg/L)
Page 4 of 5 C-MI 10/08

NPDES PERMIT APPLICATION - SHORT FORM C - Minor Industrial
Minor industrial, manufacturing and commercial facilities.
18. Is this facility located on Indian country? (check one)
Yes ❑ No El
19. Applicant Certification
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.
Mark J. Gross Vice President, Hydro Operations, APGI
Printed name of Person Signing Title
Signatur of plicant Date
North Caro i a General Statute 143-215.6 (b)(2) provides that: Any person who knowingly makes any false
statement representation, or certification in any application, record, report, plan, or other document files 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.)
Page 5 of 5
C-M 110/08

TUCKERTOWN POWERHOUSE
NPDES PERMIT NO. NC0081949
Powerhouse
Floor
Drains
50 GaUDay
TUCKERTOWN
UNITS 1, 2, 3
1
Units 1,2 and 3
Wheelpits
Drainage
•
Oil and Sludge
Skimmer
1,000 lal/Day
POWERHOUSE
SUMP
L__
Outfall # 004
Into Yadkin
River
Yadkin River
Unit One
Generator
Thrust Bearing
Cooling Water
453,600 Gal/Day
v
Outfall # 003
Into Yadkin
River
Unit Two
Generator
Thrust Bearing
Cooling Water
453,600 GallDay
Outfall # 002
Into Yadkin
River
Unit Three
Generator
Thrust Bearing
Cooling Water
453,600 Gal/Day
Outfall # 001
Into Yadkin
River
Unit One Generator Unit Two Generator Unit Three Generator
Discharge per 24 Hrs. Discharge per 24 Hrs. Discharge per 24 Hrs.
2,068,329,600 Gals. 2,068,329,600 Gals. 2,088,329,600 Gals.

'v'- V.•---.,', -'..� .'' iff
_,-\\
,- _— ti \.� rt ,:erfry
MAP TAKEN FROM USGS 7.5•MINUTE
QUADRANGLE NEW LONDON, NC
GEL Engineering OF NC, Inc.
an Affiliate of THE GEL GROUP, Inc.
GEL
Past Brice Box 14262
Research Triangle Park NC 27709
[phone]
PROJECT: alnr01113
Tuckertown Powerhouse
Montgomery County, North Carolina
SITE LOCATION
MAP
FIGURE
1
DATE: May 20, 2013
DRAWN BY: KDM IAPPRV. BY: ADE