NC0081957_Permit (Issuance)_20140214

NPDES DOCUMENT SCANNING COVER SHEET
NPDES Permit:
NC0081957
Narrows Powerhouse
Document Type:
;Permit Issuance
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Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification
Complete File - Historical
Engineering Alternatives (EAA)
Inspection
Instream Assessment (67b)
Speculative Limits
Environmental Assessment (EA)
Document Date:
February 14, 2014
This documerit is printed on reuse paper - ignore any
content on the rezrer-se side

AY"A
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. Mang. Gross
Vice President, Hydro Operations, APGI
Alcoa Power Generating, Inc.
P.O. Box 576
Badin, North Carolina 28009
Subject: Issuance of NPDES Permit
Permit NC0081957
Narrows 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: //portaincdenr.org/web /wq/admin/bog/ipu/edmr.
1617 Mail Service Center, Raleigh, North Carolina 27699-1617
Location: 512 N. Salisbury St Raleigh, North Carolina 27604
Phone: [phone]FAX: [phone]
Internet: www.ncwaterqualitv.orq
One
NorthCarohna
aturglI'
An Equal Opportunity \Affirmative Action Employer

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Forinformation 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 hearing upon written request within thirty (30)
days following receipt of this letter. This request must be in the form of a written petition, conforming
to Chapter 150B of the North Carolina General Statutes, and filed with the Office of Administrative
Hearings (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
14 A&L
d641 �'homas A. Reeder
Sincerely,

Permit NC0081957
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
Narrows Powerhouse
37720 Pine Street
Badin
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.
664,Thomas A. Reeder, Director
Division of Water Resources
• By Authority of the Environmental Management Commission
Page 1 of 6

Permit NC0081957
? 4 . @ L 4.4 . (B4u? ?u?a 4
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 waters from outfalls 001, 002, 005, 006, and 007, water
from a sump drain (Outfall 003) located at Narrows Powerhouse [37720 Pine Street, Badin] Stanly
County, and
2. Discharge from said treatment works at the location specified on the attached map into the Yadkin
River which is classified as class WS-IV and B waters in the Yadkin -Pee Dee River Basin.
Page 2 of 6

Permit NC0081957
Part I
A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
[001 / 002 / 005 / 006 / 007]
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, 005, 006, and 007. Such
discharges shall be limited and monitored3 by the Permittee as specified below:
PARAMETE
Flow (MGD)
DISCHARGE
►�II'1'AI'IDNS
Monthly
Average
)wily .
arum;:
Effluent Measurement
Frequency
Annual
Sample
Type r
Estimate
Sample
ocatton*
Effluent
Temperature)
Annual
Grab
Effluent
pH'
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
Page3of6

L
Permit NC0081957
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
A. (3.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS [003]
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 003 [Sump Drain]. Such discharges shall be limited and
monitored3 by the Permittee as specified below:
PARAMETER
Flow
'DISCHARGE•
LIMITATIONS
1V190hly Daily
Average Maximum
Measurement
Frequency
Annual
Sample
Type
Sarnple
Location*.
Estimate Effluent
Oil and Grease'
15.0 mg/L
20.0 mg/L
pH'
Annual
Annual
Grab
Effluent
Grab I 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 cleaning 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 cleaning operations which do not contribute any wastewater to the discharge are not
limited by this permit. Non -discharging cleaning operations may be conducted as often as necessary
to ensure safety and proper facility operation.
Page 4 of 6

Permit NC0081957
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. (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 II of.this
permit (Standard Conditions for.NPDES 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
A'1'1ENTION: 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
Page 5 of 6

Permit NC0081957
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/adminlbog/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.
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/admin/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, under penalty of law, that this document and all attachments were prepared under my direction or supervision in
accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted.
Based on my inquiry of the person or persons who manage the system, or those persons directly responsible forgathering the
information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware
that there are significant penalties for submitting false information, induding the possibility+ 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

Facility Information
Latitude:
Longitude:
Quad #:
Stream Class:
Receiving Stream:
Pemtitted Flow:
35°25'09"
80°05'32"
F17NB
WS-IV and B
Yadkin River
N/A
Sub -Basin:
03-07-08
North
Yadkin, Inc.
NC0081957
Narrows 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.chernikov(alncdenr.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

tALCOA
Alcoa Inc.
APGI - Yadkin
Highway 740
PO Box 576
Badin, NC 28009
December 11, 2013 Certified Mail
7013 1090 0001 3 766 1061
NC Department of Environment and Natural Resources
Division of Water Resources
Water Quality Programs
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
Attention: Sergei Chernikov
Re.: Comments on Alcoa Power Generating, Inc. Draft NPDES Permits
Dear Mr. Chernikov:
Alcoa Power Generating, Inc. (APGI) is providing the following comments to the draft NPDES
permits for discharges from the four powerhouses owned and operated by APGI along the
Yadkin River. Comments are provided for each permit and may be duplicative.
If you should have any questions regarding these matters, please don't hesitate to contact me at
[phone] or via e-mail at henk.vandermeydeni&alcoa.com
Sincerely,
Henk J. van der Meyden, PG
Cc:
M. Gross - APGI
R. Kiser - Badin
J. Morton — Pittsburgh
J. Fary - Pittsburgh
apgi yadkin draft npdes permit comments.docx
f�C�C�ObL�
DEC 1 6 2013
DENR-INATE ,UA LITY
POINT SOUfi(.. BRANCH

NPDES Draft Permit Comments —12/11/2013 2
APGI
Comments on Draft NPDES Permit NC0081931 — High Rock Powerhouse
1. Page 1 of 6 — please update the powerhouse address to reflect the address included in the
permit application — 3344 Bringle Ferry Road, Denton, NC 27239.
2. Page 2 of 6, bullet 1 - please update the powerhouse address to reflect the address
included in the permit application — 3344 Bringle Ferry Road, Denton, NC 27239.
3. Page 2 of 6, bullet 2 - please add the following after Outfall 004 "located at High Rock
Powerhouse, 3344 Bringle Ferry Road, Denton, NC 27239."
4. Page 3 of 6, Condition A. (1.) — The table of discharge limitations and monitoring
requirements shows "1" in the monthly average and daily maximum limits for
temperature. Since temperature is a monitoring -only parameter with no limits, we
believe that the "1" should be removed from the monthly average and daily maximum
column.
5. Page 3 of 6, Condition A. (1.) — Note 1 refers to upstream/downstream monitoring to
ensure that the discharges do not cause the temperature of the receiving stream to
increase by more than 2.8°C above the natural water temperature. In previous permit
renewals we have commented on the basis for instream monitoring. The large volume of
generator water discharge at natural water temperature relative to the small volume of
cooling water discharge from the heat exchangers make it impossible to create an in -
stream temperature increase of than more than 2.8°C above the natural water temperature.
Example calculation using flows from permit application:
• High Rock generator discharge water volume = 1,861,263,360 gal/day
• Assumed generator discharge water temperature = 20°C
• High Rock cooling water discharge volume = 17,280 gal/day
• Assumed max cooling water discharge temperature = 45°C
T(3) = (V(L) x T(l) + V(2) x T(2) ) / (V(1) + V(2) )
T(3) = ((1,861,2 63,360 x 20) + (17,280 x 45) ) / (1,861,263,360 + 17,280)
= 20.00023 °C
The resulting minimal increase in the receiving water of 0.00023 °C is well below the 2.8
°C threshold of allowable temperature rise above background.
Therefore, we request that Note 1 be removed from this Condition.
6. Page 3 of 6, Condition A. (1.) — The next to last paragraph refers to annual DMR
reporting with the DMR postmarked no later than January 30th following the completed
reporting period. We believe that this paragraph is obsolete in light of the eDMR

NPDES Draft Permit Comments —12/11/2013 3
APGI
reporting requirements in Condition A. (5.) and should be replaced with the following
"No later than 90 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. (5)."
7. Page 4 of 6, Condition A. (2.) — Note 2 refers to the submittal of DMRs, using the eDMR
system, for Outfall 004. Outfall 004 is a stormwater-only outfall subject to the Best
Management Practices (BMPs) conditions listed in Condition A. (4). There are no
monitoring parameters for this Outfall that lend themselves to eDMR reporting. Note 1
refers to the BMP requirements that APGI needs to comply with, including an annual
submittal of all stormwater discharges from Outfall 004. Note 2 should be deleted. The
reference to Note 2 in "monitored2" should be removed.
8. Page 5 of 6, Condition A. (4.) — The last bullet of this condition should be revised to read
"All stormwater discharge events shall be reported to the Division of Water Resources on
an annual basis.
9. Page 6 of 6, Condition A. (5.) 1. — The last paragraph stipulates that for an existing
facility the first DMR is due on the last day of the month following the issuance of the
permit. The High Rock powerhouse is subject to annual monitoring requirements and
sampling may not occur in the first month of the permit issuance. The paragraph needs to
be re -written to address the annual sampling requirements for the High Rock
powerhouse.
Comments on Draft NPDES Permit NC0081949 — Tuckertown Powerhouse
1. Page 1 of 6 — please update the powerhouse address to reflect the address included in the
permit application — 711 Tuckertown Road, New London, NC 28127.
2. Page 2 of 6, bullet 1 - please update the powerhouse address to reflect the address
included in the permit application — 711 Tuckertown Road, New London, NC 28127.
3. Page 3 of 6, Condition A. (1.) — The table of discharge limitations and monitoring
requirements shows "1" in the monthly average and daily maximum limits for
temperature. Since temperature is a monitoring -only parameter with no limits, we
believe that the "1" should be removed from the monthly average and daily maximum
column.
4. Page 3 of 6, Condition A. (1.) — Note 1 refers to upstream/downstream monitoring to
ensure that the discharges do not cause the temperature of the receiving stream to
increase by more than 2.8°C above the natural water temperature. In previous permit
renewals we have commented on the basis for instream monitoring. The large volume of
generator water discharge at natural water temperature relative to the small volume of
cooling water discharge from the heat exchangers make it impossible to create an in -
stream temperature increase of than more than 2.8°C above the natural water temperature.

NPDES Draft Permit Comments — 12/11/2013 4
APGI
Example calculation using flows from permit application:
• Tuckertown generator discharge water volume = 2,068,329,600 gal/day
• Assumed generator discharge water temperature = 20°C
• Tuckertown cooling water discharge volume = 453,600 gal/day
• Assumed max cooling water discharge temperature = 45°C
T(3) _ (V(1) x T(1) + V(2) X T(2) ) / (V(1) + V(2) )
T(3) = ((2,068,329,600 x 20) + (453,600 x 45) ) / (2,068,329,600 + 453,600)
= 20.00548 °C
The resulting minimal increase in the receiving water of 0.00548 °C is well below the 2.8
°C threshold of allowable temperature rise above background.
Therefore, we request that Note 1 be removed from this Condition.
5. Page 3 of 6, Condition A. (1.) — The next to last paragraph of this Condition refers to
annual DMR reporting with the DMR postmarked no later than January 30th following
the completed reporting period. We believe that this paragraph is obsolete in light of the
eDMR reporting requirements described in Note 3 immediately above this paragraph and
should be deleted.
6. Page 4 of 6, Condition A. (3.) — The first paragraph describes the discharge from Outfall
004 [Sump Drain] as stormwater. The description should be corrected to indicate that the
Outfall 004 discharge is comprised of sump water from floor drains and wheel pit
drainage inside the powerhouse as shown on the flow diagram submitted with the
renewal application for the Tuckertown powerhouse. Please correct the description as
follows: "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] "
7. Page 4 of 6, Condition A. (3.) — The next to last paragraph refers to annual DMR
reporting with the DMR postmarked no later than January 30th following the completed
reporting period. We believe that this paragraph is obsolete in light of the eDMR
reporting requirements described in Note 3 and should be deleted.
8. Page 5 of 6, Condition A. (4.) — The last paragraph stipulates that for an existing facility
the first DMR is due on the last day of the month following the issuance of the permit.
The Tuckertown powerhouse is subject to annual monitoring requirements and sampling
may not occur in the first month of the permit issuance. The paragraph needs to be re-
written to address the annual sampling requirements for the Tuckertown powerhouse.

NPDES Draft Permit Comments —12/11/2013 5
APGI
Comments on Draft NPDES Permit NC0081957 — Narrows Powerhouse
1. Page 1 of 6 — please update the powerhouse address to reflect the address included in the
permit application — 37720 Pine Street, Badin, NC 28009.
2. Page 2 of 6, bullet 1 - please update the powerhouse address to reflect the address
included in the permit application — 37720 Pine Street, Badin, NC 28009.
3. Page 3 of 6, Condition A. (1.) — The table of discharge limitations and monitoring
requirements shows "1" in the monthly average and daily maximum limits for
temperature. Since temperature is a monitoring -only parameter with no limits, we
believe that the "1" should be removed from the monthly average and daily maximum
column.
4. Page 3 of 6, Condition A. (1.) — Note 1 refers to upstream/downstream monitoring to
ensure that the discharges do not cause the temperature of the receiving stream to
increase by more than 2.8°C above the natural water temperature. In previous permit
renewals we have commented on the basis for instream monitoring. The large volume of
generator water discharge at natural water temperature relative to the small volume of
cooling water discharge from the heat exchangers make it impossible to create an in -
stream temperature increase of than more than 2.8°C above the natural water temperature.
Example calculation using flows from permit application:
• Narrows generator discharge water volume = 1,357,257,600 gal/day
• Assumed generator discharge water temperature = 20°C
• Narrows cooling water discharge volume = 432,000 gal/day
• Assumed max cooling water discharge temperature = 45°C
T(3)=(V(l) xTo) +V(2) XT(2) )/ (V(l)+V(2))
T(3) = ((1,357,257,600 x 20) + (432,000 x 45) ) / (1,357,257,600 + 432,000)
= 20.00795 °C
The resulting minimal increase in the receiving water of 0.00795 °C is well below the 2.8
°C threshold of allowable temperature rise above background.
Therefore, we request that Note 1 be removed from this Condition.
5. Page. 3 of 6, Condition A. (1.) — The next to last paragraph of this Condition refers to
annual DMR reporting with the DMR postmarked no later than January 30th following
the completed reporting period. We believe that this paragraph is obsolete in light of the
eDMR reporting requirements described in Note 3 immediately above this paragraph and
should be deleted.

NPDES Draft Permit Comments —12/11/2013 6
APGI
6. Page 4 of 6, Condition A. (3.) — The first paragraph of this Condition describes the
discharge from Outfall 003 [Sump Drain] as stormwater. The description should be
corrected to indicate that the Outfall 003 discharge is comprised of sump water from floor
drains, turbine wheel pits, and draft tube leakage inside the powerhouse as shown on the
flow diagram submitted with the Narrows Powerhouse renewal application. Please
correct the description as follows: "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 003 [Sump Drain]."
7. Page 5 of 6, Condition A. (3.) — The next to last paragraph of this Condition refers to
annual DMR reporting with the DMR postmarked no later than January 30th following
the completed reporting period. We believe that this paragraph is obsolete in light of the
eDMR reporting requirements described in Note 3 and should be deleted.
8. Page 5 of 6, Condition A. (4.) 1. — The last paragraph of this Condition stipulates that for
an existing facility the first DMR is due on the last day of the month following the
issuance of the permit. The Narrows powerhouse is subject to annual monitoring
requirements and sampling may not occur in the first month of the permit issuance. The
paragraph needs to be re -written to address the annual sampling requirements for the
Narrows powerhouse.
Comments on Draft NPDES Permit NC0076775 — Falls Powerhouse
1. Page 1 of 7 — please update the powerhouse address to reflect the address included in the
permit application — 49156 Falls Road, Badin, NC 28009.
2. Page 2 of 7, bullet 1 - please update the powerhouse address to reflect the address
included in the permit application — 49156 Falls Road, Badin, NC 28009.
3. Page 3 of 7, Condition A. (1.) — The table of discharge limitations and monitoring
requirements shows "1" in the monthly average and daily maximum limits for
temperature. Since temperature is a monitoring -only parameter with no limits, we
believe that the "1" should be removed from the monthly average and daily maximum
column.
9. Page 3 of 7, Condition A. (1.) — Note 1 refers to upstream/downstream monitoring to
ensure that the discharges do not cause the temperature of the receiving stream to
increase by more than 2.8°C above the natural water temperature. In previous permit
renewals we have commented on the basis for instream monitoring. The large volume of
generator water discharge at natural water temperature relative to the small volume of
cooling water discharge from the heat exchangers make it impossible to create an in -
stream temperature increase of than more than 2.8°C above the natural water temperature.

NPDES Draft Permit Comments — 12/11/2013
APGI
Example calculation using flows from permit application:
• Falls generator discharge water volume
• Assumed generator discharge water temperature
• Falls cooling water discharge volume
• Assumed max cooling water discharge temperature
T(3) = (V(I) x T(l) + V(2) x T(2) ) / (V(1) + V(2) )
= 1,551,225,600 gal/day
= 20°C
= 432,000 gal/day
= 45°C
T(3) = ((1,551,225,600 x 20) + (432,000 x 45) ) / (1,551,225,600 + 432,000)
= 20.00696 °C
7
The resulting minimal increase in the receiving water of 0.00696 °C is well below the 2.8
°C threshold of allowable temperature rise above background.
Therefore, we request that Note 1 be removed from this Condition.
4. Page 3 of 7, Condition A. (1.) — The next to last paragraph of this Condition refers to
annual DMR reporting with the DMR postmarked no later than January 30th following
the completed reporting period. We believe that this paragraph is obsolete in light of the
eDMR reporting requirements described in Note 3 immediately above this paragraph and
should be deleted.
5. Page 4 of 7, Condition A. (3.) — The first paragraph of this Condition describes the
discharge from Outfall 007 [Sump Drain] as stormwater. The description should be
corrected to indicate that the Outfall 007 discharge is comprised of sump water from floor
drains and wheel pit drainage inside the powerhouse as shown on the flow diagram
submitted with the Falls Powerhouse renewal application. Please correct the description
as follows: "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 007
[Sump Drain]."
6. Page 4 of 7, Condition A. (3.) — The next to last paragraph of this Condition refers to
annual DMR reporting with the DMR postmarked no later than January 30th following
the completed reporting period. We believe that this paragraph is obsolete in light of the
eDMR reporting requirements described in Note 3 and should be deleted.
7. Page 5 of 7, Condition A. (4.) — Note 2 refers to the submittal of DMRs, using the eDMR
system, for Outfall 008. Outfall 008 is a stormwater-only outfall subject to the Best
Management Practices (BMPs) conditions listed in Condition A. (5). There are no
monitoring parameters for this Outfall that lend themselves to eDMR reporting. Note 1
refers to the BMP requirements that APGI needs to comply with, including an annual
submittal of all stormwater discharges from Outfall 005. Note 2 should be deleted. The
reference to Note 2 in "monitored2" should be removed.

NPDES Draft Permit Comments —12/11/2013 8
APGI
8. Page 6 of 7, Condition A. (6.) 1. — The last paragraph of this Condition stipulates that for
an existing facility the first DMR is due on the last day of the month following the
issuance of the permit. The Falls powerhouse is subject to annual monitoring
requirements and sampling may not occur in the first month of the permit issuance. The
paragraph needs to be re -written to address the annual sampling requirements for the
Falls powerhouse.
Comment on Part II Standard Conditions for NPDES Permits Version 11/09/2011
Page 10 of 18 — Section E 4. Transfers - We have reviewed the language of this condition in
NPDES Permit Standard Conditions Version 11/09/2011 and compared it against Version
10/10/2007 which is included with the current NPDES permits for the powerhouses. Version
11/09/2011 adds additional requirements for the transfer of a permit that were not in Version
10/10/2007 and that go beyond the federal requirements of 40 CFR 122.41(1)(3). We are not
aware of changes to the federal or state regulations during this time frame that necessitated
the change and request that the Department provide a justification for this change in order for
Alcoa to properly review the proposed new language.
4. Transfers (11/09/2011 version)
This permit is not transferable to any person without prior written notice to and approval
from the Director in accordance with 40 CFR 122.61. The Director may condition approval
in accordance with NCGS 143-215.1, in particular NCGS 143-215.1(b)(4)b.2., and may
require modification or revocation and reissuance of the permit, or a minor modification, to
identify the new permittee and incorporate such other requirements as may be necessary
under the CWA [40 CFR 122. 41(l) (3), 122.61] or state statute.
4. Transfers (10/10/2007 version)
This permit is not transferable to any person except after notice to the Director. The Director
may require modification or revocation and reissuance of the permit to document the change
of ownership. Any such action may incorporate other requirements as may be necessary
under the Clean Water Act [40 CFR 122.41(l)(3)1

North Carolina } ss
Mecklenburg County }
The Charlotte Observer Publishing Co.
Charlotte, NC
Affidavit of Publication
Charlotte Observer
REFERENCE: 145583 NCDENR/DWQ/POINT SOURCE
0000802793 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: 12/05/2013
AD SPACE: 38 LINES
FILED ON: 12/05/2013
Public (Jot/ q
Naafi Colima Environmental Manayernent
CanmbabrVNPOES the
1617 Mel Service C.enhe
Relelgh, NC 2789E-101 Y
Notice of Intent to Issue a NPDES
Wastewater Pernik',
The North Caropna Envlrodmental Manage-
ment Conunlaalon pprrop to laaue a
NPDES( wastewater dUdre ge permit to the
ga d tletha p osed.pWemilt II re:
ed unt 30 days rkq the publtah data o1 t!b
notice. jhe D rector of the NC DMaion of
WaterhwrIng Resourcesthere be a gNNnnhold t degblic
ree
of OuWIc Interest. Please malt comments
anWor Inbrnurtbn regUesta.to DWR at the
alrne address. Interested persona may
the DM at 512 N: Sallbbury StreetRalolgh, NC to review Information on'Itle. Addltloeal
tnfotmetloh od NPDES pemrlte and this no -
ace maybe ttgolamdoonngolts►wwebsllne>http:l/
itc
td o b1'raelling� (9191 t1Q?-e39D760 Alcoa
Power GenemtNlnr , lac requested renewal of
In manit "y�Cou'rty; Ihlt � Ilty Powerhouse
water cooIr�p�water end sump drain
wale o eta Vadfdn iilvsr, 'f k i Rlwr ye-
arn.
NAME:
tid,l,Lk17Y4
TITLE:
DATE:
n."71- r-Vi2Lt
DEC 0 5 2013
In TestimonWh reof I have hereunto set my/land and affixed my seal, the day and year aforesaid.
My commission Expires:

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:
cc: file
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
are met:
Opposes the issuance of the above permit, based on reasons stated below, or
attached:

DENR/DWR
FACT SHEET FOR NPDES PERMIT DEVELOPMENT
NPDES No. NC0081957
Facility Information
Applicant/Facility Name:
Alcoa Power Generating, Inc. /Narrows Powerhouse
Applicant Address:
PO Box 576, Badin, NC 28009-0576
Facility Address:
On NCSR 1704
Permitted Flow
N/A — Daily Average —1,923,440 gpd
Type of Waste:
Once -through cooling water and process water.
Facility/Permit Status:
Renewal
County:
Stanly
Miscellaneous
Receiving Stream:
Stream Classification:
Yadkin River
WS-IV & B CA
Regional Office:
USGS Topo Quad:
Mooresville
F18NE
303(d) Listed?:
NO
Permit Writer:
Sergei Chernikov, Ph.D.
Subbasin:
03-07-08
Date:
November 20, 2013
Drainage Area (mi2):
Summer 7Q10 (cfs)
Winter 7Q10 (cfs):
Average Flow (cfs):
IWC (%):
Primary SIC Code:
4911
SUMMARY
This facility maintains seven outfalls (001, 002, 003, 004, 005, 006, and 007). The source of
wastewater for outfalls 001,002, 005, 006 and 007 is once through cooling water, outfall 003 is a
sump drain collecting runoff. Stormwater from the area beneath the penstocks is discharged from
outfall 004.
The receiving stream (Yadkin River) is classified as WS-IV and B CA waters from Badin dam to a
point 0.5 miles upstream of Falls dam. This reach is not listed on the 303(d) list as impaired water.
COMPLIANCE SUMMARY:
During the last 5 years, the facility received one notice of violation for violating pH limit (please see
attached).
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) intemet application has been
added to the permit. [See Special Condition A. (4)]
PROPOSED SCHEDULE FOR PERMIT ISSUANCE:
Draft Permit to Public Notice: December 3, 2013
Permit Scheduled to Issue:
January 27, 2014
Alcoa Power Gcneratine, Inc. — Nanows Hydroelectric Powerhouse Fact Sheet
NPDES Renewal
Page 1

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.—Natrows .Hydroelectric Powerhouse Fact Sheet
NPDES Renewal
Page 2

To: NPDES Unit
Water Quality Section
Attention: Charles Weaver
Date: August 27, 2013
SOC Priority Project: No
NPDES STAFF REPORT AND RECOMMENDATION
County: Stanly
Permit No. NC0081957
PART I - GENERAL INFORMATION
Physical Address
1. Facility and address: Narrows Powerhouse 37720 Pine Street
Alcoa Power Generating, Inc. Badin, NC 28009
P.O. Box 576
Badin, NC 28009
2. Date of investigation: August 20, 2013
3. Report prepared by: Wes Bell, Environmental Specialist
4. Persons contacted and telephone number: Beverly Whitley, [phone]
5. Directions to site: From the junction of Hwy. 740 and Falls Rd. in the Town of Badin, travel
southeast on Falls Road and take a left (northeast) onto Pine Street. The Narrows Powerhouse is
located at the end of the road.
6. Discharge point(s), list for all discharge points (Outfalls 001, 002, 003, 004, 005, 006, 007):
Latitude: 35° 25' 08"
Longitude: 80° 05' 30"
See USGS Map included with the renewal application for specific locations of all outfalls.
U.S.G.S. Quad No.: F 18 NE
7. Receiving stream or affected surface waters: Yadkin River.
a. Classification: WS-IV and B
b. River Basin and Subbasin No.: Yadkin 03-07-08
c. Describe receiving stream features and pertinent downstream uses: The Yadkin
used for primary and secondary recreation and electricity genera E s:. ;__�,
SEP 0 4 2013
per-_--

PART II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1. a. Volume of wastewater and description of wastewater source(s) of each outfall:
Outfalls 001, 005, 006, & 007: 0.432 MGD per outfall - Once through cooling water.
Outfall 002: 0.1724 MGD - Thrust bearing cooling water for Units 1, 2, 3, & 4.
Outfall 003: 0.02016 MGD — Turbine wheel pits, floor drains, draft tube leakage,
inspection sump, powerhouse sump.
Outfall 004 — Accumulated stormwater only from sump (transformer location).
b. Please provide a description of existing or substantially constructed treatment facilities:
Outfall 003 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 collects all recovered oil in a
storage tank (off -site location) for ultimate disposal by a contracted company.
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 tprmit be renewed as requested.
5/277_,
ignature of reparer Da 7
taeao) Wee,‘( -
Water Quality Regional Supervisor ate

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 th= ..-. km ' . • to
stream is managed off -site for energy recovery by a third party. R
E
JUL 16 2013
DENR- ATER OUR.'
POINT SOUR r �a;.

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,
6/ /
Mark J. Gross
Vice -President, Hydro Opera
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
NC0081957
Please print or type.
Alcoa Power Generating, Inc
Narrows 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 ❑
Street Address or State Road 37720 Pine Street
City Badin
State / Zip Code N.C. / 28009
County Sta n ly
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 0
State 0
Private ® Public 0
S. 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
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 specific amounts consu
Product Produced or Raw Material
Consumed
(AVERAGE)
Product Produced or Raw Material
Consumed
(PEAK)
per Day
978 MWhr
2,592 MWhr
per Month
29,782 MWhr
78,840 MWhr
per Year
357,390 MWhr
946,080 MWhr
11. Frequency of discharge: Continuous ® Intermittent 0
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
20,160
Stormwater -monthly average
Varies (accumulated stormwater from Penstock hillside
behind powerhouse)
Other - monthly average
Explain: Cooling Water
1,903,280
Monthly Average
total discharge (all types)
1,923,440
13. Number of separate discharge points: 7
Outfall Identification number(s) 001, 002, 003, 004, 005, 006, 007
14. Name of receiving stream(s) (Provide a map showing the exact location of each outfall, including
latitude and longitude
Yadkin River latitude: 35° 25' 08.32" N; longitude: 80° 05' 30.11"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, Yuent 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)
15.7
11.1
Celsius
pH
7.4
*
Units
Fecal Coliform (If sanitary waste is
present)
N/A
N/A
N/A
Total Residual Chlorine (if chlorine is
used)
N/A
N/A
N/A
onthly average values 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 Permit Number Type
Hazardous Waste (RCRA) N/A NESHAPS (CAA)
Permit Number
N/A
UIC (SDWA) N/A Ocean Dumping (MPRSA) N/A
NPDES NC0081957 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 003 — previous 3 years of sample results were less than detection limit of 5 mg/L)
Page 4 of 5
C-M 110/08

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
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 SignTitle
Signature f Ap • ican
6-
Date
North Carolin = eneral 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-MI 10/08

NARROWS POWERHOUSE
NPDES PERMIT NO. NC 0081957
NARROWS
Unit One
Scroll Case
Yadkin River
NARROWS
Unit Two
Scroll Case
NARROWS
Unit Three
Scroll Case
Outfall # 004
Accumulated Stormwater
from Sump
600 GaUDay
•
NARROWS
Unit Four
Scroll Case
Unit One
Generator
Cooling Water
432,000 Gal/Day
•
Outfall # 001
Into Yadkin
River
Units 1,2,3 & 4
Thrust Bearing
Cooling Water
172,400 Gal/Day
Outfa I # 002
Into Yadkin
River
Unit Two
Generator
Cooling Water
432,000 Gal/Day
Outfall # 006
Into Yadkin
River
•
Units 1,2,3,& 4
Turbine Wheelpits,
and floor drains
2,880 Gal/Day
I.
Inspection
Sump
Powerhouse
Sump
Outfall # 003
Into Yadkin
River
r
Unit Three
Generator
Cooling Water
432,000 Gal/Day
All Units Draft
Tube Leakage
17.280 Gal/Day
I
Outfall # 005
Into Yadkin
River
Unit Four
Generator
Cooling Water
432,000 Gal/Day
Outfall # 007
Into Yadkin
River
Unit One Generator Unit Two Generator Unit Three Generator Unit Four Generator
Discharge/24 Hrs. Discharge/24 His. Discharge/24 Hrs. Discharge/24 Hrs.
1,379,894,400 gals. 1,357,257,600 gals. 1,583,452,800 gals. 1,357,257,600 gals.
" Outran 003 consists of two separate discharges from a common sump
" N. C. DM decided not to include Outlet) 004 In the new permit They provided approval to discharge in correspondence as part of the pemmit renewal.
1

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MAP TAKEN FROM USGS 7.5•MINUTE
QUADRANGLE BADIN, NC
GEL Engineering OF NC, Inc.
an Affiliate of 771E GELGROUP, Inc.
GEL
Post 016ce Box 14262
Research Tdargle Park. NC 27709
[phone]
PROJECT: alrnx01113
Narrows Powerhouse
Stanly County, North Carolina
SITE LOCATION
MAP
FIGURE
1
DATE: May 20, 2013
DRAWN BY: KDM IAPPRV. BY: ADE