20080915 Ver 3_App to amend C-W WQCs (NC and SC) filed 9-9-2016_20160912

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
Introduction
Duke Energy Carolinas, LLC (Duke Energy) submits this Application for Amendment of
the Water Quality Certification (WQC) issued for the Catawba-Wateree Hydroelectric
Project.
For consistency and simplicity, this application is being filed with both the North Carolina
Department of Environmental Quality (NCDEQ) to amend North Carolina Certification
No. 3767 issued November 14, 2008 and the South Carolina Department of
Environmental Control (SCDHEC) to amend South Carolina Certification DHEC 08-C-001
issued February 12, 2015. Most revisions apply to both states and one applies to
South Carolina only. The applicability of each revision to each state is clearly identified
within the descriptions of the individual revisions. Duke Energy acknowledges each
state will process this application independently and are under no constraint to
synchronize their processing of this application with the other state.
Background
This amendment is necessary due to the changes to the changes listed below. These
changes affect certain sections and appendices of the Catawba-Wateree
Comprehensive Relicensing Agreement (CRA) dated December 22, 2006 which are also
incorporated by reference as conditions of the original WQCs.
1. CRA Parties have found it to be beneficial to improve regional drought resiliency
by raising reservoir summer target elevations on Lakes James, Norman, and
Wylie by an additional 6" from May 1 — October 1 and to make a public safety
improvement by modifying the 6,000 cubic feet per second (cfs) recreation flow
release from the Wylie Development to 3,000 cfs.
2. Duke Energy voluntarily initiated revisions to update the Low Inflow Protocol
(LIP) and the Maintenance and Emergency Protocol (MEP) in accordance with
1

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
the CRA based on experience gained during voluntary implementation of these
protocols since 2006.
3. The license issued for the Catawba-Wateree Hydroelectric Project on November
25, 2015 requires Duke Energy to file both a Water Quality Monitoring Plan
(WQMP) and a Flow and Water Quality Implementation Plan (FWQIP). These
plans are presented in CRA Appendices F and L respectively. During the time since
these CRA provisions were developed in 2006, some of these provisions, their
status and implementation schedule have changed.
Affected WQC Conditions
The affected WQC conditions are:
Condition 1; CRA -Appendices
Appendix A
A-1.0 Reservoir Elevation Articles; Reservoir Elevations (applies to NC
and SC) A-2.0 Flow Articles; Recreation Flows (applies to SC only)
Appendix C: Low Inflow Protocol (LIP) Article (applies to NC and SC)
Appendix D: Maintenance and Emergence Protocol (MEP) Article (applies to NC
and SC)
Appendix F: Water Quality Monitoring Plan (WQMP) (applies to NC and SC)
Appendix L: Flow and Water Quality Implementation Plan (FWQIP) (applies to
INC and SC)
Detailed Description of Revisions
Revisions to each of the affected WQC Conditions previously listed are described in
detail in the following sections of this application and include:
• Statement of revision;
• Background information explaining the need for the revision;
l)

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
• Actual text of the revision - for ease of identification, text modified from
the December 22, 2006, Signature Copy of the CRA, Revision 1 is shown in
bold italics (with only the exception of the revised Water Quality Monitoring
Plan);
• Identification and assessment of any incremental environmental impacts of
the revision compared to the original WQC; and
• Consultation Summary.
Consultation
On July 15, 2016 Duke Energy submitted this Application for Amendment in draft form to
state and federal resource agencies and the Catawba Indian Nation for consultation. All
consultation comments received for each revision are summarized, including Duke
Energy's responses, which have been incorporated into this application. All consultation
documentation for all revisions is included in Attachment A.

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
CRA Appendix A, A-1.0 Reservoir Elevation Articles; Reservoir Elevations (applies to NC
and SC)
Statement of Revision
Add six inches to James, Norman, and Wylie summer Normal Target Elevations.
Background information explaining the need for the revision
This revision was evaluated as part of the Catawba-Wateree Water Management Group's
(CWWMG) Water Supply Master Plan (WSMP) development
(http://www.catawbawatereewmg.org/water-su pply-master-plan/read-the-report/).
The Catawba-Wateree Water Management Group (CWWMG) is a 501C-3 non-profit
organization established "to identify, fund, and manage projects that will help preserve,
extend, and enhance the capabilities of the Catawba-Wateree River Basin to provide
water resources for human needs while maintaining the ecological integrity of the
waterway."The CWWMG has 19 members, one member representing each of the
eligible 18 public water utilities in North and South Carolina that operate water intakes
on either a reservoir or regulated river reach of the main stem, and one member
representing Duke Energy. The organization was born out of the Catawba-Wateree
Hydroelectric Project relicensing process completed by Duke Energy.
The purpose of this WSMP is to protect, preserve, and extend the available water supply
in the Catawba-Wateree River and its 11 reservoirs. The work effort, results, and
recommendations presented were developed by the CWWMG, regulatory officials from
North and South Carolina, and a Stakeholder Advisory Team (SAT).
This specific revision involves raising the summer target operating levels six inches in
three of the larger Catawba-Wateree reservoirs (Lake James, Lake Norman and Lake
Wylie).
This modification has been approved by all CRA Parties. Pending successful amendment of
the WQC, this modification will be filed with the FERC as a license amendment.
Actual text of the revision (For ease of identification. text modified from the December
22, 2006, Signature Copy of the CRA, Revision 1 is shown in bold italics)
rd

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
CRA Appendix A, pages A-1 and A-2:
ARTICLE — Reservoir Elevations
(A) Reservoir Elevations — Within 60 days following the issuance of this license,
to protect and enhance the Project's values that may be affected by reservoir
level fluctuations, the Licensee shall maintain the elevations of the Project
reservoirs between the Normal Minimum and Normal Maximum Elevations
indicated in the tables below and shall endeavor in good faith to achieve the
Normal Target Elevations in the tables. All elevations in the tables below are
relative to the top of the dam (including floodgates and flashboards where
applicable) with 100.0 ft. = Full Pond Elevation. The elevations included in the
tables are for the first day of the given month; elevations for other days of the
month are determined by linear interpolation.
Lake James (Full Pond is 1200.0 ft. above Mean Sea Level (MSL))
Month
Normal Minimum
Normal Target
Normal Maximum
(ft.)
(ft.)
(ft.)
January
93
96
100
February
92
94
100
March
92
95
100
April
92
96
100
98 (98.5 after
Wateree Dam is
modified to
improve flood
May - October
95
100
management or
1213112025
whichever is
later)
November - December
93
96
100

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
Lake Rhodhiss (Full Pond is 995.1 ft. MSL)
Month
Normal Minimum
Normal Target
Normal Maximum
January - February
(ft.)
(ft.)
(ft.)
January - December
94
97
100
Lake Hickory (Full Pond is 935.0 ft. MSL)
Month
Normal Minimum
(ft.)
Normal Target
(ft.)
Normal Maximum
(ft.)
January - February
94
96
100
March — December
94
97
100
Lookout Shoals Lake (Full Pond is 838.1 ft. MSL)
Normal Minimum
Normal Target
Normal Maximum
Month
(ft.)
(ft.)
(ft.)
January - December
94
97
100
Lake Norman (Full Pond is 760.0 ft. MSL)
Normal Minimum
Normal Target
Normal Maximum
Month
(ft.)
(ft.)
(ft.)
January
93
96
100
February
91
94
100
March
92.26
95.26
100
April
93.65
96.65
100
98 (98.5 after
Wateree Dam is
modified to
improve flood
May - October
95
100
management or
1213112025
whichever is
later)

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
November
93.98
97
100
December
93
96
100
Mountain Island Lake (Full Pond is 647.5 ft. MSL)
Month
Normal Minimum
Normal Target
Normal Maximum
Month
(ft.)
(ft.)
(ft.)
January - April
(ft.)
(ft.)
(ft.)
January - December
94.3
96
100
Lake Wylie (Full Pond is 569.4 ft. MSL)
Month
Normal Minimum
Normal Target
Normal Maximum
Month
(ft.)
(ft.)
(ft.)
January - April
94
97
100
January - December
95
97 (97.5 after
100
Wateree Dam is
modified to
May - October
94
improve flood
100
management or
1213112025
whichever is
later)
November - December
94
97
100
Fishing Creek Reservoir (Full Pond is 417.2 ft. MSL)
Month
Normal Minimum
Normal Target
Normal Maximum
Month
(ft.)
(ft.)
(ft.)
January - December
95
98
100
Great Falls Reservoir (Full Pond is 355.8 ft. MSL)
Normal Minimum
Normal Target
Normal Maximum
Month
(ft.)
(ft.)
(ft.)
January - December
95
97.5
100

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
Identification and assessment of any incremental environmental impacts of the
revision compared to the original WQC.
As recommended in the WSMP, an operating level increase in these reservoirs would
represent access to a greater volume of water during typically drier summer months
than is currently available under the existing target elevations. Modeling results
indicate that this strategy, alone, could extend the water yield of the Catawba-Wateree
lake system by one decade beyond the baseline conditions. When coupled with
other strategies recommended in the WSMP, this strategy will help extend the system
water yield by an additional 40 to 50 years beyond baseline conditions, for an adequate
water supply lasting into the next century. This will provide additional water volume
for water supply, recreational uses and environmental resources during periods of
extreme drought.
This operational modification was modeled for any significant risk of exacerbating
downstream high-water events. Both the number of spill events and the duration of spill
events (days over local elevation 100.2 ft and days over local elevation 103 ft) are
summarized below. Out of a base analysis period of record of 29,330 days (82 years),
the modeling predicts the change in the number of spill days at any location without spill
gates to not exceed 0.06% of the analysis period. This operational modification creates
no significant increase in the risk of high-water events.
Note 1- Baseline Scenario uses New License requirements, projected water withdrawals.
Note 2 -Six-inch Summer Target Increase applies May 1 t October 1.
:J
CHEOPS Model Results (Notes 1, 2)
Period of Record 1929 to
Numberof Spill Events
Days Over Elevation100.2ft
Days Over Elevation103ft
2010 (29,950 days)
6"Summer
6"Summer
6"Summer
Targetlncrease
Target Increase
Target Increase
Ungated Dam Locations
Baseline
atlames,
Baseline
atJames,
Baseline
atJames,
Norman, and
Norman, and
Norman, and
Wylie
Wylie
Wylie
LakeJames
63
70
160
177
6
7
Lake Rhodhiss
255
260
604
605
26
29
LookoutShoals Lake
817
810
1,075
1,086
42
43
Mountain Island Lake
140
134
183
190
41
36
GreatFalls Reservoir
209
213
2,952
2,904
828
837
LakeWateree
280
282
266
267
26
25
Note 1- Baseline Scenario uses New License requirements, projected water withdrawals.
Note 2 -Six-inch Summer Target Increase applies May 1 t October 1.
:J

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
Consultation Summary
No comments received for this revision.
Pi

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
CRA Appendix A, A-2.0 Flow Articles; Recreation Flows (applies to SC only)
Statement of Revision
Change 6,000 cfs recreation flow release at Wylie Hydro Station to 3,000 cfs
Backeround information explaining the need for the revision
Appendix A-2.0 in the CRA lists a series of recreational flows for five sections of the
Catawba- Wateree River.
These flow rates are based on actual flow studies, which were carried out in 2004. Duke
Energy made a series of different flow releases and groups of canoeists and kayakers of
varying skill levels made an assessment of what was considered to be a suitable level.
The flow tables in the CRA reflect the outcome of these assessments.
Duke Energy made the decision to follow the CRA recreational flows voluntarily as
soon as the original CRA was signed, rather than wait for the license to be issued.
With the delay in FERC issuing the license, this has given us seven full seasons of
experience with recreational flows. With one exception these flows have worked out
as anticipated.
The area of concern is the recreation flow releases from Lake Wylie. At this location
the CRA calls for 3,000 cubic foot per second (cfs) recreation flow releases in the
spring and fall and 6,000 cfs recreation flow releases during the summer. The 6,000
cfs recreation flow was included because it was thought that the higher water level
gave the paddling trip an added experience value.
During the past seven years paddlers, including the Carolina Canoe Club, have been
able to assess the flows and also to get a feel for the type of boater using this section.
Paddlers have found 3,000 cfs provides a perfectly satisfactory experience, but the
6,000 cfs level has proved to be a challenge to the skill levels of the more typical
paddlers using this section. In fact, for safety reasons Catawba River Expeditions —
one of the few outfitters running commercial trips on this section of the river— has
chosen not to run river trips at the 6,000 cfs level. Tubing has increased in popularity
and this adds to the need to drop back to 3,000 cfs throughout the season.
10

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
This modification has been approved by all CRA Parties. Pending successful amendment
of the WQC, this modification will be filed with the FERC as a license amendment.
Actual text of the revision (for ease of identification, text modified from the December
22, 2006, Signature Copy of the CRA, Revision 1 is shown in bold italics)
11

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
CRA Appendix A, page A-6:
(C) Wylie Development — Within 60 days following issuance of this license, the Licensee
shall provide recreational flow releases at the Wylie Development in accordance with the
following schedule in the table below. In addition, the Licensee shall, from May 1 to July
15 inclusive, release at least 1,300 cfs for six hours prior to the recreational flow release
scheduled start times shown in the table below to ensure suitable water levels at
Landsford Canal State Park.
Wylie Development Recreational Flow Schedule
Flow (at or
Dates
Days / Description
above)
Hour Start
Hour End
(inclusive)
(cfs)
Apr 1 -Apr 30
Last full weekend — Saturday
3,000
10:00 am
4:00 pm
and Sunday
May 1 -Jun 15
Each Friday, Saturday and
3,000
10:00 am
4:00 pm
Sunday plus Memorial Day
Each Friday, Saturday and
Jun 16 -Jul 15
Sunday plus Independence
3,000
10:00 am
4:00 pm
Day
Jul 16 -Aug
Each Saturday and Sunday
3,000
10:00 am
4:00 pm
31
Sep 1 -Sep
Each Friday, Saturday and
3,000
10:00 am
4:00 pm
30
Sunday plus Labor Day
Oct 1 -Oct 31
Each Saturday and Sunday
3,000
10:00 am
4:00 pm
12

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
Identification and assessment of any incremental environmental impacts of the
revision compared to the original WQC
This change will improve paddling and tubing safety for a broader range of public skill
and experience levels while still providing scheduled recreational flow releases.
Consultation Summary
No comments received for this revision.
13

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
CRA Appendix C: Low Inflow Protocol (LIP) Article (applies to NC and SC)
Statement of Revision
General revisions to the LIP to incorporate experience to -date, to be consistent
with the preceding two CRA revisions, and to implement improvements resulting
from the Water Supply Master Plan (WSMP).
Background information exalaininR the need for the revision
The LIP was evaluated as part of the Catawba-Wateree Water Management Group's
(CWWMG) Water Supply Master Plan (WSMP) development
(http://www.catawbawatereewmg.org/water- supply-master-plan/read-the-report/).
Through this revision, Duke Energy is implementing items identified in and determined
to be beneficial via the development of the WSMP.
Some LIP revisions are necessary to make the LIP consistent with previously discussed
revisions to reservoir target elevations and recreation flow releases.
In addition, the CRA requires that during the term of the New License, the Catawba-
Wateree Drought Management Advisory Group (CW-DMAG) will review and update the
LIP periodically to ensure continuous improvement of the LIP and its implementation.
The LIP established the CW- DMAG to work with Duke Energy when the LIP is initiated
to foster a basin -wide response to a Low Inflow Condition.
These evaluations and modifications are to be considered at least once every five years
during the term of the license recently issued on November 25, 2015. Even though the
license has been issued for less than five years, experience gained from voluntarily
implementing the LIP since 2006 has yielded revisions for clarifications and
improvements. The CW-DMAG has concurred in these revisions.
Actual text of the revision (for ease of identification, text modified from the December
22, 2006, Signature Copy of the CRA, Revision 1 is shown in bold italics)
14

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
APPENDIX C: LOW INFLOW PROTOCOL (LIP) FOR THE
CATAWBA-WATEREE PROJECT
PURPOSE
The purpose of this Low Inflow Protocol (LIP) is to establish procedures for reductions in water use
during periods of low inflow to the Catawba-Wateree Project (the Project). The LIP was developed
on the basis that all parties with interests in water quantity will share the responsibility to establish
priorities and to conserve the limited water supply.
OVERVIEW
This LIP provides trigger points and procedures for how the Project will be operated by the
Licensee, as well as water withdrawal reduction measures and goals for other water users during
periods of low inflow (i.e., periods when there is not enough water flowing into the Project
reservoirs to meet the normal water demands while maintaining Remaining Usable Storage in the
reservoir system at or above a seasonal target level).
The Licensee will provide flow from hydro generation and other means to support electric
customer needs and the instream flow needs of the Project. During periods of normal inflow,
reservoir levels will be maintained within prescribed Normal Operating Ranges. During times that
inflow is not adequate to meet all of the normal demands for water and maintain reservoir levels
as normally targeted the Licensee will progressively reduce hydro generation. If hydrologic
conditions worsen until trigger points outlined herein are reached, the Licensee will declare a
Stage 0 - Low Inflow Watch and begin meeting with the applicable agencies and water users to
discuss this LIP. If hydrologic conditions continue to worsen, the Licensee will declare various
stages of a Low Inflow Condition (LIC) as defined in the Procedure section of this document. Each
progressive stage of the LIC will call for greater reductions in hydro station water releases and
water withdrawals, and allow additional use of the available water storage inventory.
The goal of this staged LIP is to take the actions needed in the Catawba-Wateree River Basin to
delay the point at which the Project's usable water storage inventory is fully depleted. While there
are no human actions that can guarantee the Catawba-Wateree River Basin will never experience
operability limitations at water intake structures due to low reservoir levels or low streamflows,
this LIP is intended to provide additional time to allow precipitation to restore streamflow,
reservoir levels, and groundwater levels to normal ranges. The amount of additional time gained
during the LIP depends primarily on the diagnostic accuracy of the trigger points, the amount of
regulatory flexibility the Licensee has to operate the Project, and the effectiveness of the Licensee
and other water users in working together to implement their required actions and achieve
significant water use reductions in a timely manner.
To ensure continuous improvement regarding the LIP and its implementation throughout the term
of the New License, the LIP will be re-evaluated and modified periodically. These re-evaluations
and modifications will be as determined by the Catawba-Wateree Drought Management Advisory
Group (CW-DMAG).
15

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
KEY FACTS AND DEFINITIONS
Human Health and Safety and the Integrity of the Public Water Supply and Electric Systems are
of Utmost Importance — Nothing in this protocol will limit the Licensee's ability to take any and
all lawful actions necessary at the Project to protect human health and safety, protect its
equipment from major damage, protect the equipment of the Large Water Intake Owners
from major damage, and ensure the stability of the regional electric grid and public water
supply systems. It is recognized that the Licensee may take the steps that are necessary to
protect these things without prior consultation or notification. Likewise, nothing in this LIP will
limit the states of North Carolina and South Carolina from taking any and all lawful actions
necessary within their jurisdictions to protect human health and safety. It is recognized that
North Carolina and South Carolina may also take the steps necessary to protect these things
without prior consultation or notification.
2. No Abrogation of Statutory Authority — It is understood the South Carolina Department of
Natural Resources (SCDNR) must operate under the statutory authority of its drought response
statutes, and nothing in this LIP will require the SCDNR to take any action that exceeds its
authority under their drought response statute.
Normal Full Pond Elevation — Also referred to simply as "full pond", this is the level of a
reservoir that corresponds to the point at which water would first begin to spill from the
reservoir's dam(s) if the Licensee took no action. This level corresponds to the lowest point
along the top of the spillway (including flashboards) for reservoirs without floodgates and to
the lowest point along the top of the floodgates for reservoirs that have floodgates. To avoid
confusion among the many reservoirs the Licensee operates, it has adopted the practice of
referring to the Full Pond Elevation for all of its reservoirs as equal to 100.0 ft. relative. The
Full Pond Elevations for the Project reservoirs are as follows:
Reservoir
Full Pond Elevation
(ft. above Mean Sea Level)
Lake James
1200.0
Lake Rhodhiss
995.1
Lake Hickory
935.0
Lookout Shoals Lake
838.1
Lake Norman
760.0
Mountain Island Lake
647.5
Lake Wylie
569.4
Fishing Creek Reservoir
417.2
Great Falls Reservoir
355.8
Cedar Creek Reservoir
284.4
Lake Wateree
225.5
16

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
4. Net Inflow — The cumulative inflow into a reservoir, expressed in acre-feet (ac -ft) per month.
Net inflow is the sum of tributary stream flow, inflow from upstream hydro development flow
releases (where applicable), groundwater inflow, precipitation falling on the reservoir surface,
land surface runoff, and on -reservoir point -source return flows, less the sum of on -reservoir
water withdrawals, groundwater recharge, hydro development flow releases, evaporation, and
other factors.
5. Normal Minimum Elevation —The level of a reservoir (measured in feet above Mean Sea Level
(MSL) or feet relative to the full pond contour with 100.0 ft. corresponding to full pond) that
defines the bottom of the reservoir's Normal Operating Range for a given day of the year. If
inflows and outflows to the reservoir are kept within some reasonable range of the average or
expected amounts, hydroelectric project equipment is operating properly and no protocols for
abnormal conditions have been implemented, reservoir level excursions below the Normal
Minimum Elevation should not occur.
Normal Maximum Elevation —The level of a reservoir (measured in feet above MSL or feet
relative to the full pond contour with 100.0 ft. corresponding to full pond) that defines the top
of the reservoir's Normal Operating Range for a given day of the year. If inflows and outflows
to the reservoir are kept within some reasonable range of the average or expected amounts,
hydroelectric project equipment is operating properly, and no protocols for abnormal
conditions have been implemented, reservoir level excursions above the Normal Maximum
Elevation should not occur.
Normal Target Elevation —The level of a reservoir (measured in feet above MSL or feet relative
to the full pond contour with 100.0 ft corresponding to full pond) the Licensee will endeavor in
good faith to achieve, unless operating in this LIP, the Maintenance and Emergency Protocol
(MEP), the Spring Reservoir Level Stabilization Program (Lakes James, Norman, Wylie and
Wateree only), a Spring Stable Flow Period (Lake Wateree only) or a Floodplain Inundation
Period (Lake Wateree only). Since inflows vary significantly and outflow demands also vary, the
Licensee will not always be able to maintain actual reservoir level at the Normal Target
Elevation. The Normal Target Elevation falls within the Normal Operating Range, but it is not
always the average of the Normal Minimum and Normal Maximum Elevations.
8. Normal Operating Range for Reservoir Levels —The band of reservoir levels within which the
Licensee normally attempts to maintain a given reservoir that it operates on a given day. Each
reservoir has its own specific Normal Operating Range, and that range is bounded by a Normal
Maximum Elevation and a Normal Minimum Elevation. If inflows and outflows to the reservoir
are kept within some reasonable range of the average or expected amounts, hydro project
equipment is operating properly and no protocols for abnormal conditions have been
implemented, reservoir level excursions outside of the Normal Operating Range should not
occur. The New License for the Project includes the Normal Operating Ranges for reservoir
levels (i.e., Normal Minimum, Normal Maximum, and Normal Target Elevations) as listed in
the Reservoir Elevations License Article.
9. Large Water Intake — Any water intake (e.g., public water supply, industrial, agricultural, power
plant, etc.) having a maximum instantaneous capacity greater than or equal to one Million
Gallons per Day (MGD) that withdraws water from the Catawba-Wateree River Basin.
10. Public Water Supply (PWS) — Any water delivery system owned and/or operated by any
governmental or private entity that utilizes waters from the Catawba-Wateree River Basin for
17

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
the public interest including drinking water; residential, commercial, industrial, and
institutional uses; irrigation, and/or other public uses.
11. Critical Reservoir Elevation — Unless it is otherwise stated as applying only to a specific intake
or type of intake, the Critical Reservoir Elevation is the highest level of water in a reservoir
(measured in feet above MSL or feet relative to the full pond contour with 100.0 ft.
corresponding to full pond) below which any Large Water Intake used for PWS or industrial
uses, or any regional power plant intake located on the reservoir will not operate at its
Licensee -approved capacity. The Critical Reservoir Elevations, as of December 31, 2016, are
defined below:
Reservoir
Critical Reservoir Elevation
(ft. relative to local datum)
(100 ft = Full Pond)
Type of Limit
Lake James
50.0
Power Production
Lake Rhodhiss
89.4
Municipal Intake
Lake Hickory
94.0
Municipal Intake
Lookout Shoals Lake
74.9
Municipal Intake
Lake Norman
90.0
Power Production
Mountain Island Lake
90.5
Munkipal Intake
Lake Wylie
92.6
Industrial Intake
Fishing Creek Reservoir
95.0
Municipal Intake
Great Falls Reservoir
87.2
Power Production
Cedar Creek Reservoir
80.3
Power Production
Lake Wateree
92.5
Municipal Intake
12. Total Usable Storage(TUS) — The sum of the Project's volume of water expressed in ac ft
contained between each reservoir's Critical Reservoir Elevation and the Full Pond Elevation.
13. Remaining Usable Storage (RUS) — The sum of the Project's volume of water expressed in ac ft
contained between each reservoir's Critical Reservoir Elevation and the actual reservoir
elevation at any given point in time.
14. Storage Index (SI) — The ratio, expressed in percent, of RUS to TUS at any given point in time.
15. Target Storage Index (TSI) —The ratio of RUS to TUS based on the Project reservoirs being at
their Normal Target Elevations. The following table lists the TSIs for the first day of each
month:
18

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
Month
Target Storage Index for 1s' Day of
Month (%)'
Target Storage Index for 151 Day
of Month (%)' (Modifiedf
Jan
63
63
Feb
54
54
Mar
63
63
Apr
70
70
May
77
80
Jun
77
80
Jul
77
80
Aug
77
80
Sep
77
80
Oct
77
80
Nov
71
71
Dec
64
64
1 Target Storage Indices for other days of the month are determined by linear
interpolation.
Z Future modified Comprehensive Relicensing Agreement (CRA) values for
Normal Target Elevation for Lake James, Lake Norman and Lake Wylie
shall become effective after Wateree Dam is modified to improve flood
management or after December 31, 2025, whichever is later.
16. U.S. Drought Monitor — A synthesis of multiple indices, outlooks, and news accounts that
represents a consensus of federal and academic scientists concerning the drought status of all
parts of the United States. Typically, the U.S. Drought Monitor indicates intensity of drought
as DO -Abnormally Dry, D1 -Moderate, D2 -Severe, D3 -Extreme, and D4 -Exceptional. The
website address is http://droughtmonitor.unl.edu. The following federal agencies are
responsible for maintaining the U.S. Drought Monitor:
■ Joint Agricultural Weather Facility (U.S. Department of Agriculture and Department of
Commerce/National Oceanic and Atmospheric Administration[DOC/NOAH])
■ Climate Prediction Center (DOC/NOAA/National Weather Service)
■ National Centers for Environmental Information (DOC/NOAA)
17. U.S. Drought Monitor Three -Month Numeric Average — If the U.S. Drought Monitor has a
reading of DO -D4 for any part of the Catawba-Wateree River Basin that drains to Lake
Wateree, the Basin will be assigned a numeric value for the current month. This monthly
numeric value will equal the area -weighted average Drought Monitor designation (e.g., DO =
0, D4 = 4) for the Catawba-Wateree River Basin that drains to Lake Wateree. A normal
condition in the Basin, defined as the absence of a Drought Monitor designation, would be
assigned a numeric value of negative one (-1). A running average numeric value of the current
month and the previous two months will be monitored and designated as the U.S. Drought
Monitor Three -Month Numeric Average.
18. Critical Flows — The minimum flow releases from the hydro developments that may be
necessary to:
a. prevent long-term or irreversible damage to aquatic communities consistent with the
resource management goals and objectives for the affected stream reaches;
19

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
provide some basic level of operability for Large Water Intakes located on the affected
stream reaches; and,
c. provide some basic level of water quality maintenance in the affected stream reaches.
For the purposes of this LIP, the Critical Flows are as follows:
a. Linville River, below the Bridgewater Development (Lake James): 75 cubic feet per
second (cfs).
b. Catawba River Bypassed Reach below the Bridgewater Development (Lake James): 25
cfs.
c. Oxford Regulated River Reach below the Oxford Development (Lake Hickory): 100 cfs.
d. Lookout Shoals Regulated River Reach below the Lookout Shoals Development: 80 cfs.
e. Wylie Regulated River Reach below the Wylie Development: 700 cfs.
f. Great Falls Bypassed Reaches (Long and Short) at the Great Falls -Dearborn
Development: 450 cfs and 80 cfs respectively.
g. Wateree Regulated River Reach below the Wateree Development: 800 cfs.
h. Leakage flows at the remaining Project structures. Leakage flows are defined as the
flow of water through wicket gates when the hydro units are not operating and
seepage through the Project structures at each development.
19. Recreation Flow Reductions — Since all recreation flow releases must be made by either
releasing water through hydroelectric generation or through flow releases that bypass hydro
generation equipment, reductions in Project Flow Requirements will impact recreation flow
releases.
20. Organizational Abbreviations — Organizational abbreviations include the North Carolina
Department of Environmental Quality (NCDEQ), North Carolina Wildlife Resources
Commission (NCWRC), SCDNR, South Carolina Department of Health and Environmental
Control (SCDHEC), Federal Energy Regulatory Commission (FERC), National Marine Fisheries
Service (NMFS), United States Bureau of Indian Affairs (BIA), United States Fish and Wildlife
Service (USFWS) and the United States Geological Survey (USGS).
21. CW-DMAG—The CW-DMAG will be tasked with working with the Licensee when the LIP is
initiated. This team will also meet as necessary to foster a basin -wide response to a LIC (see
Procedure section of this LIP). Members of the CW-DMAG agree to comply with the conditions
of this LIP. Membership in the CW-DMAG is open to the following organizations, of which
each organization may have up to two members, with one vote per organization for making
decisions:
a. NCDEQ
b. NCWRC
c. NMFS
d. SCDNR
e. SCDHEC
f. USFWS
g. USGS
20

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
h. Each Owner of a Large Water Intake located on one of the Project reservoirs or the
main stem of the Catawba-Wateree River
Each Owner of a Large Water Intake located on any tributary stream within the
Catawba-Wateree River Basin that ultimately drains to Lake Wateree
Licensee (CW-DMAG Coordinator)
The CW-DMAG will meet at least annually (typically during the month of May) beginning in
2007 and continuing throughout the term of the New License, regardless of the LIC status, to
review prior year activities, discuss data input from Large Water Intake Owners, and discuss
other issues relevant to the LIP. The Licensee will maintain an active roster of the CW-DMAG
and update the roster as needed. The Licensee will prepare meeting summaries of all CW-
DMAG meetings and will make these meeting summaries available to the public by posting on
its Web site.
22. Revising the LIP — During the term of the New License, the CW-DMAG will review and
update the LIP periodically to ensure continuous improvement of the LIP and its
implementation. These evaluations and modifications will be considered at least once
every five (5) years during the New License term. Modifications must be approved by a
consensus of the participating CW-DMAG members. If the participating members
cannot reach consensus, then the dispute resolution procedures set forth in Section
31.0 of the CRA will apply. Approved modifications will be incorporated through
revision of the LIP and the Licensee will file the revised LIP with the FERC. If any
modifications of the LIP require amendment of the New License, the Licensee will: (i)
provide notice to all Parties to the CRA advising them of the proposed license article
amendment and the Licensee's intent to file it with the FERC; (ii) submit the modification
request to the NCDEQ and/or the SCDHEC for formal review and approval as may be required
by any reopener conditions of the respective state's 401 Water Quality Certification for the
Project; and (iii) file a license amendment request for FERC approval. During this
process, the CW-DMAG may appoint an ad hoc committee to address issues and
revisions relevant to the LIP. The filing of a revised LIP by the Licensee will not constitute or
require modification to the CRA and any Party to the CRA may be involved in the FERC's public
process for assessing the revised LIP. Issues such as sediment fill impact on reservoir storage
volume calculations, revising the groundwater monitoring plan and substitution of a regional
drought monitor for the U.S. Drought Monitor, if developed in the future, are examples of
items that may be addressed.
23. Water Withdrawal Data Collection and Reporting—The Licensee will maintain information on
cumulative water use from Project reservoirs beginning in 2006 and continuing throughout the
term of the New License and will make the information available to water intake owners and
governmental agencies upon their request. The Licensee will require all owners of Large
Water Intakes located within the FERC Project Boundaries to report to the Licensee, on
an annual basis in MGD, their average monthly water withdrawals from and flow
returns to the Project or its tributary streams that drain to Lake Wateree. The Licensee
will maintain a database of this information including the Licensee's own non -hydro
water use records (i.e., water uses due to thermal power generation). These annual
withdrawal summaries will be in writing, certified for accuracy by a professional
engineer or other appropriate official, and will be provided to the Licensee by January
31 of each year for the preceding calendar year beginning in 2007. This information may
be used to determine if future increased water withdrawals would be within the projections of
21

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
the Water Supply Study conducted during the relicensing process and filed with the FERC as
part of the Licensee's Application for New License for the Project or subsequent updates to
the projections.
24. Reclaimed Water— Wastewater that has been treated to reclaimed water standards and is re-
used for a designated purpose (e.g., industrial process, irrigation). Reclaimed Water will not
be subject to the water use restrictions outlined in this LIP.
25. Drought Response Plan Updates—All Large Water Intake Owners will review and update their
Drought Response Plans or Ordinances (or develop a plan or ordinance if they do not
have one) by June 30, 2007 and as necessary within 180 days following the
acceptance by the FERC of any future LIP revisions during the term of the New
License to ensure compliance and coordination with the LIP, including the authority to
enforce the provisions outlined herein, provided that the requirements of the LIP are
consistent with state law.
26. Relationship Between the LIP and the MEP—The MEP outlines the response the Licensee will
take under certain emergency and equipment failure and maintenance situations to continue
practical and safe operation of the Project, to mitigate any related impacts to license
conditions, and to communicate with resource agencies and the affected parties. Under the
MEP, temporary modifications of prescribed flow releases and the reservoir level Normal
Operating Ranges are allowed. Lowering levels of Project reservoirs caused by situations
addressed under the MEP will not invoke implementation of this LIP. Also, if the LIP has
already been implemented at the time that a situation covered by the MEP is initiated, the
Licensee will typically suspend implementation of the LIP until the MEP situation has been
eliminated. The Licensee may, however, choose to continue with the LIP if desirable.
27. Consensus — Consensus is reached when all CW-DMAG members in attendance can 'live with'
the outcome or proposal being made. The concept of consensus is more fully described in the
Catawba-Wateree Hydroelectric Project Relicensing Stakeholder Teams Charter (dated
October, 2005).
28. Monitored USGS Streamflow Gages —The Monitored USGS Streamflow Gages are identified as
USGS streamflow gage #s 02145000 (South Fork Catawba River at Lowell, NC), 02137727
(Catawba River near Pleasant Gardens, NC), 02140991 (Johns River at Arney's Store, NC), and
02147500 (Rocky Creek at Great Falls, SC).
29. Instream Flows for Recreation — The New License for the Project includes recreational flow
releases as listed in the Recreational Flows License Article.
30. Minimum Flows — The New License for the Project includes the minimum flow requirements as
listed in the Minimum Flows License Article, the Wylie High Inflow Protocol License Article,
and the Flows Supporting PWS and Industrial Processes License Article.
31. Project Flow Requirements — These flow requirements include the Minimum Flows and the
portion of the Recreational Flows that is greater than the Minimum Flows for Normal
Conditions (i.e., conditions outside of this LIP or MEP).
32. Public Information System —The New License for the Project includes the requirement to
provide information to the public as specified in the Public Information License Article.
22

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
33. Spring Reservoir Level Stabilization Program — The New License for the Project includes the
reservoir level requirements in the Spring Reservoir Level Stabilization Program License Article.
PROCEDURE
During periods of normal inflow, reservoir levels will be maintained within prescribed Normal
Operating Ranges. During times when inflow is not adequate to meet all of the normal demands
for water and maintain reservoir levels as normally targeted, the Licensee will progressively reduce
hydro generation while meeting Project Flow Requirements. During a Low Inflow Watch or a LIC
(as defined below), the Licensee and other water users will follow the protocol set forth below for
the Project regarding communications and adjustments to hydro station flow releases, bypassed
flow releases, minimum reservoir elevations, and other water demands. The adjustments set forth
below will be made on at least a monthly basis and are designed to equitably allocate the impacts
of reduced water availability in accordance with the purpose statement of this LIP.
Trigger points that demonstrate worsening hydrologic conditions will define various stages of the
LIC. A summary of trigger points for various stages is provided in the table below. The specific
triggers required to enter successive stages are defined in the procedure for each stage.
Summary of LIP Trigger Points
1 The ratio of RUS to TUS at a given point in time.
z DM = The three-month numeric average of the published U.S. Drought Monitor.
3 The sum of the rolling sixth -month average for the Monitored USGS Streamflow Gages as a percentage of the
period of record (i.e., long-term [LT]) rolling average for the same six-month period for the Monitored USGS
Streamflow Gages.
4 Stage 0 is triggered when any two of the three trigger points are reached.
Stage 0 Actions
The Licensee will monitor the Sl, the U.S. Drought Monitor, and the Monitored USGS Streamflow
Gages on at least a monthly basis and will declare a Stage 0 Low Inflow Watch if any two of the
following conditions occur:
On the first or sixteenth day of the month (or first business day thereafter), SI is
below the TSI, but greater than 90% of the TSI, while providing the Project Flow
Requirements.
b. The U.S. Drought Monitor Three -Month Numeric Average has a value greater than or
equal to 0.
23
1
Drought Monitor 2 (3-
Monitored USGS 3
Stage
Storage Index
month average)
Streamflow Gages
04
90% < SI < 100% TSI
3mo Ave DM >_ 0
AVG <_ 85% LT 6mo Ave
1
75% TSI < SI <_ 90% TSI
and
3mo Ave DM >_ 1
or
AVG <_ 78% LT 6mo Ave
2
57% TSI < SI <_ 75% TSI
and
3mo Ave DM >_ 2
or
AVG <_ 65% LT 6mo Ave
3
42% TSI < SI <_ 57% TSI
and
3mo Ave DM >_ 3
or
AVG <_ 55% LT 6mo Ave
4
SI <_ 42% TSI
and
3mo Ave DM = 4
or
AVG <_ 40% LT 6mo Ave
1 The ratio of RUS to TUS at a given point in time.
z DM = The three-month numeric average of the published U.S. Drought Monitor.
3 The sum of the rolling sixth -month average for the Monitored USGS Streamflow Gages as a percentage of the
period of record (i.e., long-term [LT]) rolling average for the same six-month period for the Monitored USGS
Streamflow Gages.
4 Stage 0 is triggered when any two of the three trigger points are reached.
Stage 0 Actions
The Licensee will monitor the Sl, the U.S. Drought Monitor, and the Monitored USGS Streamflow
Gages on at least a monthly basis and will declare a Stage 0 Low Inflow Watch if any two of the
following conditions occur:
On the first or sixteenth day of the month (or first business day thereafter), SI is
below the TSI, but greater than 90% of the TSI, while providing the Project Flow
Requirements.
b. The U.S. Drought Monitor Three -Month Numeric Average has a value greater than or
equal to 0.
23

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
c. The sum of the actual rolling six-month average streamflows at the Monitored USGS
Streamflow Gages is equal to or less than 85% of the sum of the period of record
rolling average streamflows for the same six-month period.
When a Low Inflow Watch has been declared, the Licensee will activate the CW-DMAG, including
the initiation of monthly meetings or conference calls to occur on the second Tuesday of each
month. These monthly discussions will focus on:
a. Proper communication channels between the CW-DMAG members.
Information reporting consistency for CW-DMAG members, including an SI history and
forecast (at least a 90 -day look back and look ahead) from the Licensee, a water use
history and forecast (at least a 90 -day look back and look ahead) from each water user
on the CW-DMAG, streamflow gage and groundwater monitoring status from the state
agencies and USGS, and state-wide drought response status from the state agencies.
c. Refresher training on this LIP.
d. Overview discussions from each CW-DMAG member concerning their role and plans
for responding if a Stage 1 or higher LIC is subsequently declared.
Stage 1 Actions
1. The Licensee will declare a Stage 1 LIC and notify the CW-DMAG if:
a. On the first or sixteenth day of the month (or first business day thereafter), the SI is at
or below 90% of the TSI, but greater than 75% of the TSI, while providing the Project
Flow Requirements,
and either of the following conditions exists:
The U.S. Drought Monitor Three -Month Numeric Average has a value greater than or
equal to 1.
c. The sum of the actual rolling six-month average streamflows at the Monitored USGS
Streamflow Gages is equal to or less than 78% of the sum of the period of record
rolling average streamflows for the same six-month period.
2. The Licensee will complete the following activities after the Stage 1 LIC declaration:
Within 1 day:
Reduce the Project Flow Requirements by 60% of the difference between the normal
Project Flow Requirements and the Critical Flows. These reduced Project Flow
Requirements are referred to as Stage 1 Minimum Project Flows.
Reduce the Normal Minimum Elevations by two feet at Lake James and Lake Norman
and by one foot at each of the other Project reservoirs, but not to levels at any
reservoir below the applicable Critical Reservoir Elevation. These elevations are
referred to as the Stage 1 Minimum Elevations.
24

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
Within 5 days:
c. Update its Web site and Interactive Voice Response (IVR) messages to account for the
impacts of the LIP on reservoir levels, usability of the Licensee's public access areas,
and recreation flow schedules.
d. Notify the FERC, the USFWS, the BIA, NMFS, and the Catawba Indian Nation of the
Stage 1 LIC declaration.
e. Provide bi-weekly (once every two weeks) information updates to owners of Large
Water Intakes about reservoir levels, meteorological forecasts, and inflow of water
into the system.
f. In addition the Licensee may, at its sole discretion, modify or suspend its use of
selected operating procedures that are designed for periods of normal or above
normal inflow to optimize the water storage capabilities of the Project, including the
Normal Maximum Elevations and Normal Target Elevations for reservoir levels; the
Spring Reservoir Level Stabilization Program; the Wylie High Inflow Protocol and at
Lake Wateree, the Spring Stable Flow Periods and Floodplain Inundation Periods.
These modifications and suspensions may be used at the Licensee's sole discretion in
any LIC (Stages 1 through 4).
3. Owners of PWS intakes and owners of intakes used for irrigation with a capacity greater than
100,000 gallons per day will complete the following activities within 14 days after the Stage 1
LIC declaration:
a. Notify their water customers and employees of the LIC through public outreach and
communication efforts.
b. Request that their water customers and employees implement voluntary water use
restrictions, in accordance with their drought response plans, which may include:
■ Reduction of lawn and landscape irrigation to no more than two days per week
(i.e., residential, multi -family, parks, streetscapes, schools, etc.)
■ Reduction of residential vehicle washing.
At this stage, the goal is to reduce water usage by 3-5% (or more) from the amount
that would otherwise be expected. The baseline for this comparison will be generated
by each entity and will be based on existing conditions (i.e., drought conditions). For
the purposes of determining 'the amount that would otherwise be expected', each
entity may give consideration to one or more of the following:
■ Historical maximum daily, weekly, and monthly flows during drought conditions.
■ Increased customer base (e.g., population growth, service area expansion) since
the historical flow comparison.
■ Changes in major water users (e.g., industrial shifts) since the historical flow
comparison.
■ Climatic conditions for the comparison period.
■ Changes in water use since the historical flow comparison.
25

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
■ Other system specific considerations.
c. Provide a status update to the CW-DMAG on actual water withdrawal trends. Discuss
plans for moving to mandatory water use restrictions, if required.
Owners of Large Water Intakes, other than those referenced in Item 3 above, will complete
the following activities within 14 days after the Stage 1 LIC declaration:
Notify their customers and employees of the LIC through public outreach and
communication efforts.
b. Request that their customers and employees conserve water through reduction of
water use, electric power consumption, and other means.
c. Provide a status update to the CW-DMAG on actual water withdrawal trends.
Stage 2 Actions
1. The Licensee will declare a Stage 2 LIC and notify the CW-DMAG if:
a. On the first or sixteenth day of the month (or first business day thereafter), the SI is at
or below 75% of the TSI, but greater than 57% of the TSI, while providing the Stage 1
Minimum Project Flows,
and either of the following conditions exists:
The U.S. Drought Monitor Three -Month Numeric Average has a value greater than or
equal to 2.
c. The sum of the actual rolling six-month average streamflows at the Monitored USGS
Streamflow Gages is equal to or less than 65% of the sum of the period of record
rolling average streamflows for the same six-month period.
2. The Licensee will complete the following activities after the Stage 2 LIC declaration:
Within 1 day:
Eliminate prescribed recreation flow releases at this stage and all subsequent stages.
Reduce the Project Flow Requirements by 95% of the difference between the normal
Project Flow Requirements and Critical Flows. These reduced flows are referred to as
Stage 2 Minimum Project Flows.
Reduce the Stage 1 Minimum Elevations by one additional foot at Lake James (three
feet total below Normal Minimum Elevation) and two additional feet at Lake Norman
(four feet total below Normal Minimum Elevation) and by one additional foot (two
feet total below Normal Minimum Elevations) at each of the other Project reservoirs
but not to levels at any reservoir below the applicable Critical Reservoir Elevation.
These elevations are referred to as the Stage 2 Minimum Elevations.
Within 5 days:
c. Update its Web site and IVR messages to account for the impacts of the LIP on
reservoir levels, usability of the Licensee's public access areas, and recreation flow
schedules.
26

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
d. Notify the FERC, the USFWS, the BIA, NMFS, and the Catawba Indian Nation of the
Stage 2 LIC declaration.
e. Provide bi-weekly information updates to owners of Large Water Intakes about
reservoir levels, meteorological forecasts, and inflow of water into the system.
In addition the Licensee may, at its sole discretion, modify or suspend its use of
selected operating procedures that are designed for periods of normal or above
normal inflow to optimize the water storage capabilities of the Project, including the
Normal Maximum Elevations and Normal Target Elevations for reservoir levels; the
Spring Reservoir Level Stabilization Program; the Wylie High Inflow Protocol; and at
Lake Wateree, the Spring Stable Flow Periods and Floodplain Inundation Periods.
These modifications and suspensions may be used at the Licensee's sole discretion in
any LIC (Stages 1 through 4).
Owners of PWS intakes and owners of intakes used for irrigation with a capacity greater than
100,000 gallons per day will complete the following activities within 14 days after the Stage 2
LIC declaration:
a. Notify their water customers and employees of the continued LIC and movement to
mandatory water use restrictions through public outreach and communication efforts.
b. Require that their water customers and employees implement mandatory water use
restrictions, in accordance with their drought response plans, which may include:
■ Limiting lawn and landscape irrigation to no more than two days per week (i.e.,
residential, multi -family, parks, streetscapes, schools, etc.)
■ Eliminating residential vehicle washing.
■ Limiting public building, sidewalk, and street washing activities except as required
for safety and/or to maintain regulatory compliance.
At this stage, the goal is to reduce water usage by 5-10% (or more) from the amount
that would otherwise be expected (as discussed in Stage 1 above).
c. Enforce mandatory water use restrictions through the assessment of penalties.
d. Provide a status update to the CW-DMAG on actual water withdrawal trends.
4. Owners of Large Water Intakes, other than those referenced in Item 3 above, will complete
the following activities within 14 days after the Stage 2 LIC declaration:
a. Continue informing their customers and employees of the LIC through public outreach
and communication efforts.
b. Request that their customers and employees conserve water through reduction of
water use, electric power consumption, and other means.
c. Provide a status update to the CW-DMAG on actual water withdrawal trends.
27

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
Stage 3 Actions
1. The Licensee will declare a Stage 3 LIC and notify the CW-DMAG if:
On the first or sixteenth day of the month (or first business day thereafter), the SI is at
or below 57% of the TSI, but greater than 42% of the TSI, while providing the Stage 2
Minimum Project Flows,
and either of the following conditions exists:
b. The U.S. Drought Monitor Three -Month Numeric Average has a value greater than or
equal to 3.
c. The sum of the actual rolling six-month average streamflows at the Monitored USGS
Streamflow Gages is equal to or less than 55% of the sum of the period of record
rolling average streamflows for the same six-month period.
2. The Licensee will complete the following activities after the Stage 3 LIC declaration:
Within 1 day:
a. Reduce the Project Flow Requirements to Critical Flows. These reduced flows are
referred to as Stage 3 Minimum Project Flows.
b. Reduce the Stage 2 Minimum Elevations by seven additional feet at Lake James (ten
feet total below Normal Minimum Elevation) and one additional foot at Lake Norman
(five feet total below Normal Minimum Elevation) and by one additional foot (three
feet total below Normal Minimum Elevations) at each of the other Project reservoirs
but not to levels at any reservoir below the applicable Critical Reservoir Elevation.
These elevations are referred to as the Stage 3 Minimum Elevations.
Within S days:
c. Update its Web site and IVR messages to account for the impacts of the LIP on
reservoir levels, usability of the Licensee's public access areas, and recreation flow
schedules.
d. Notify the FERC, the USFWS, the BIA, NMFS, and the Catawba Indian Nation of the
Stage 3 LIC declaration.
e. Provide bi-weekly information updates to owners of Large Water Intakes about
reservoir levels, meteorological forecasts, and inflow of water into the system.
In addition the Licensee may, at its sole discretion, modify or suspend its use of
selected operating procedures that are designed for periods of normal or above
normal inflow to optimize the water storage capabilities of the Project, including the
Normal Maximum Elevations and Normal Target Elevations for reservoir levels; the
Spring Reservoir Level Stabilization Program; the Wylie High Inflow Protocol; and at
Lake Wateree, the Spring Stable Flow Periods and Floodplain Inundation Periods.
These modifications and suspensions may be used at the Licensee's sole discretion in
any LIC (Stages 1 through 4).
3. Owners of PWS intakes and owners of intakes used for irrigation with a capacity greater than
100,000 gallons per day will complete the following activities within 14 days after the Stage 3
LIC declaration:
28

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
a. Notify their water customers and employees of the continued LIC and movement to
more stringent mandatory water use restrictions through public outreach and
communication efforts.
b. Require that their water customers and employees implement increased mandatory
water use restrictions, in accordance with their drought response plans, which may
include:
■ Limiting lawn and landscape irrigation to no more than one day per week (i.e.,
residential, multi -family, parks, streetscapes, schools, etc.)
■ Eliminating residential vehicle washing.
■ Limiting public building, sidewalk, and street washing activities except as required
for safety and/or to maintain regulatory compliance.
■ Limiting construction uses of water such as dust control.
■ Limiting flushing and hydrant testing programs, except to maintain water quality
or other special circumstances.
■ Eliminating the filling of new swimming pools.
At this stage, the goal is to reduce water usage by 10-20% (or more) from the amount
that would otherwise be expected (as discussed in Stage 1 above).
c. Enforce mandatory water use restrictions through the assessment of penalties.
d. Encourage industrial/manufacturing process changes that reduce water consumption.
e. Provide a status update to the CW-DMAG on actual water withdrawal trends.
4. Owners of Large Water Intakes, other than those referenced in Item 3 above, will complete
the following activities within 14 days after the Stage 3 LIC declaration:
a. Continue informing their customers and employees of the Low Inflow Condition
through public outreach and communication efforts.
b. Request that their customers and employees conserve water through reduction of
water use, electric power consumption, and other means.
c. Encourage industrial/manufacturing process changes that reduce water consumption.
d. Provide a status update to the CW-DMAG on actual water withdrawal trends.
Stage 4 Actions
1. The Licensee will declare a Stage 4 Low Inflow Condition (LIC) and notify the CW-DMAG if:
a. On the first or sixteenth day of the month (or first business day thereafter), the SI is at
or below 42% of the TSI, while providing the Stage 3 Minimum Project Flows.
and either of the following conditions exists:
b. The U.S. Drought Monitor Three -Month Numeric Average has a value of 4.
29

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
c. The sum of the actual rolling six-month average streamflows at the Monitored USGS
Streamflow Gages is equal to or less than 40% of the sum of the period of record
rolling six-month average streamflows for the same six-month period.
2. The Licensee will:
a. Continue to provide Critical Flows as long as possible.
b. Reduce the Stage 3 Minimum Elevations to the Critical Reservoir Elevations within 1
day following the Stage 4 LIC declaration.
c. Establish a meeting date and notify the CW-DMAG within 1 day following the Stage 4
LIC declaration.
d. Notify the FERC, the USFWS, the B/A, NMFS, and the Catawba Indian Nation of the
Stage 4 LIC declaration within 5 days following the Stage 4 LIC declaration.
e. Continue to update its Web site and IVR messages to account for the impacts of the
LIP on reservoir levels, usability of the Licensee's public access areas, and recreation
flow schedules within 5 days following the Stage 4 LIC declaration.
f. Provide bi-weekly information updates to owners of Large Water Intakes about
reservoir levels, meteorological forecasts, and inflow of water into the system.
g. In addition the Licensee may, at its sole discretion, modify or suspend its use of
selected operating procedures that are designed for periods of normal or above
normal inflow to optimize the water storage capabilities of the Project, including the
Normal Maximum Elevations and Normal Target Elevations for reservoir levels; the
Spring Reservoir Level Stabilization Program; the Wylie High Inflow Protocol, and at
Lake Wateree, the Spring Stable Flow Periods and Floodplain Inundation Periods.
These modifications and suspensions may be used at the Licensee's sole discretion in
any LIC (Stages 1 through 4).
Note: Once a Stage 4 LIC is declared, the RUS in the reservoir system is small and can
be fully depleted in a matter of weeks or months. Groundwater recharge may also
contribute to declining reservoir levels. For these reasons, in the Stage 4 LIC, the
Licensee may not be able to ensure that flow releases from its hydro developments will
meet or exceed Critical Flows or that reservoir elevations will be greater than or equal to
the Critical Reservoir Elevations.
3. Owners of PWS intakes and owners of intakes used for irrigation with a capacity greater than
100,000 gallons per day will complete the following activities within 14 days after the Stage 4
LIC declaration:
a. Notify their water customers and employees of the continued LIC and movement to
emergency water use restrictions through public outreach and communication efforts.
b. Restrict all outdoor water use.
c. Implement emergency water use restrictions in accordance with their drought
response plans, including enforcement of these restrictions and assessment of
penalties.
30

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
d. Prioritize and meet with their commercial and industrial large water customers to
discuss strategies for water reduction measures including development of an activity
schedule and contingency plans.
e. Prepare to implement emergency plans to respond to water outages.
f. Provide a status update to the CW-DMAG on actual water withdrawal trends.
At this level, the goal is to reduce water usage by 20-30% (or more) from the amount that
would otherwise be expected (as discussed in Stage 1 above).
4. Owners of Large Water Intakes on the CW-DMAG, other than those referenced in Item 3
above, will complete the following activities within 14 days after the Stage 4 LIC declaration:
a. Continue informing their customers and employees of the LIC through public outreach
and communication efforts.
b. Request that their customers and employees conserve water through reduction of
water use, electric power consumption, and other means.
c. Encourage industrial/manufacturing process changes that reduce water consumption.
d. Provide a status update to the CW-DMAG on actual water withdrawal trends.
5. The CW-DMAG will:
a. Meet within 5 days after the declaration of the Stage 4 LIC and determine if there are
any additional measures that can be implemented to:
(1) reduce water withdrawals without creating more severe regional problems;
(2) reduce water releases from the Project without creating more severe regional
problems; or
(3) use additional reservoir storage without creating more severe regional
problems.
b. Work together to develop plans and implement any additional measures identified
above.
Recovery from the Low Inflow Protocol
1. Recovery under the LIP as conditions improve will be accomplished by reversing the staged
approach outlined above, except that:
a. All three of the trigger points identified above for declaring the lower numbered stage
must be met or exceeded before returning reservoir minimum elevations and Project
flows to levels specified in that LIC stage, Low Inflow Watch, or Normal Conditions.
b. In addition to the triggers used to designate LIP stages, groundwater levels must
show improvement to designate less restrictive LIP stages. The wells listed in the
table titled "USGS Catawba-Wateree Groundwater Network Wells" will be
monitored to evaluate the condition of groundwater resources upstream of Wateree
Dam. The monthly average of the daily mean water levels reported by USGS for the
groundwater network wells will be used to evaluate groundwater conditions.
31

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
USGS Catawba-Wateree Groundwater Network Wells
Groundwater
Date
Monitor Station
Site ID
Site Name
Installed
#1 USGS Kershaw
342440080443900
KER- 433 KERSHAW COUNTY NR LIBERTY HILL (REGOLITH)
5/11/2009
County near
Liberty Hill
342440080443901
KER- 435 KERSHAW COUNTY NR LIBERTY HILL (BEDROCK)
5/11/2009
344333080503600
LAN- 497 LANCASTER COUNTY AIRPORT (REGOLITH)
1/12/2010
#2 USGS Lancaster
County Airport
344333080503601
LAN- 498 LANCASTER COUNTY AIRPORT (BEDROCK)
1/12/1010
#3 USGS Mineral
345609080415102
UN -147 MINERAL SPRINGS RS TRANSITION ZONE WELL
3/26/1011
Springs Research
Station
345609080415103
UN -148 MINERAL SPRINGS RS BEDROCK WELL
3/26/2011
345830081033100
YRK-3295 YORK COUNTY AIRPORT (BEDROCK)
9/3/2010
#4 USGS York
County Airport
345830081033101
YRK-3296 YORK COUNTY AIRPORT (REGOLITH)
9/2/2010
#5 USGS Pasour
352012081154301
GS -289 PASOUR MTN RS REGOLITH WELL, PM -25
4/21/2010
Mountain
Research Station
352012081154302
GS -290 PASOUR MTN RS TRANSITION ZONE WELL, PM -3
4/21/2010
353135080524201
IR -130 LANGTREE RS MW -2S NR MT MOURNE (REGOLITH)
3/3/2001
#6 USGS Langtree
Peninsula Research
353135080524202
IR -131 LANGTREE RS MW -21 (TRANSITION ZONE)
3/3/2001
Station near
Mount Mourne
353135080524203
IR -132 LANGTREE RS MW -2D (QUARTZ DIORITE)
3/3/2001
#7 USGS Pleasant
354133082042201
MC -107 NEAR PLEASANT GARDENS RS, NC (REGOLITH)
8/20/2010
Gardens Research
Station
354133082042203
MC -109 NEAR PLEASANT GARDENS, NC (BEDROCK)
8/20/2010
#8 USGS Glen
354302081433201
BK -126 GLEN ALPINE RS NEAR MORGANTON, NC
1/13/2000
Alpine Research
(BEDROCK)
Station near
354302081433202
BK -127 GLEN ALPINE RS NR MORGANTON, NC (REGOLITH)
11/1/2008
Morganton
#9 USGS Oxford
354616081085101
CW -350 OXFORD RS NR CLAREMONT (TRANSITION ZONE)
3/24/2011
Research Station
near Claremont
354616081085102
CW -351 OXFORD RS NR CLAREMONT, NC (BEDROCK)
8/1/2009
#10 USGS Granite
355031081243202
CD -101 GRANITE FALLS RS TRANSITION ZONE WELL
3/17/2011
Falls Research
Station
355031081243203
CD -102 GRANITE FALLS RS BEDROCK WELL
3/17/2011
Movement between LIP stages during recovery will be determined by comparing the
current monthly average water level for each well to the range of monthly average
water levels for each well calculated from the period of record data through the most
recent USGS approved Water Year (October -September) to determine comparative
percentiles.
The results of the monthly calculations will be combined and compared to the
32

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
Groundwater Recovery Triggers defined below. Groundwater trigger levels will be
updated annually. The following triggers will be used in combination with the three
triggers used for defining LIP stages to designate improving conditions.
Groundwater Recovery Triggers
The following recovery steps are authorized when the groundwater network's current
combined monthly average water level meets the designated trigger.
i. Recovery to Stage 3: Monthly period of record low water level
or higher
ii. Recovery to Stage 2: Monthly period of record 10th percentile
or higher
iii. Recovery to Stage 1: Monthly period of record 25th percentile
or higher
iv. Recovery to Stage 0 and Normal: Monthly period of record 50th
percentile or higher
The calculations described in this Item b. above will be used for informational purposes
only until ten or more years of approved USGS data are available, reflecting the range of
historical hydrologic conditions in the Catawba-Wateree River Basin which ultimately
drains to Wateree Dam.
The NCDEQ, SCDNR, SCDHEC, USGS and the Licensee will determine by consensus when the
groundwater trigger points for recovery are reached.
The Licensee will directly notify the CW-DMAG members within 5 days following attainment of
all the trigger points necessary to recover to a lower stage of the LIC, Low Inflow Watch, or
Normal Conditions.
4. The Licensee will update its Web site and IVR messages within 5 days following attainment of
all the trigger points necessary to recover to a lower stage of the LIC, Low Inflow Watch, or
Normal Conditions to account for the impacts of the LIP on reservoir levels, usability of the
Licensee's public access areas, and recreation flow schedules.
5. Notify the FERC, the USFWS, the BIA, NMFS, and the Catawba Indian Nation within 5 days
following attainment of all the trigger points necessary to recover to a lower stage of the LIC,
Low Inflow Watch, or Normal Conditions.
33

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
Identification and assessment of any incremental environmental impacts of the
revision compared to the original WQC
The LIP revisions make the LIP consistent with and supportive of the beneficial CRA
provisions previously discussed (i.e., higher summer Target Elevations and reduced
Lake Wyle Dam recreation flow). In addition, other revisions allow the LIP to respond
more quickly to changing drought triggers which conserves water during drought
periods, helping to reduce the impacts of severe drought conditions on water supply,
recreational uses and environmental resources.
Additionally, comparisons of the percent of time in LIP stages were completed for the
various scenarios. The results of this analysis indicate little difference between the
percent of time in various LIP stages for the proposed revisions as compared to the
baseline scenario, but do generally indicate an improvement of less time in more severe
drought stages. A summary of impacts and/or benefits determined from the assessment
of proposed LIP revisions is presented in the following table.
Proposed LIP Revision
Impact of Revision
Lower critical intake
Slightly increases Total Usable Storage, with corresponding
elevation revisions at
minor increase to Target Storage Index. Increases are the
Lake James and Mountain
result of the new Bridgewater Powerhouse at Lake James and
Island Lake
the retirement of the Riverbend Steam Station on Mountain
Island Lake.
Increase summer target
Provides an enhancement to basin -wide water yield and
elevations by 6 inches at
extends available water supply by one decade and by a total
Lake James, Lake Norman
of 4 decades when coupled with other CWWMG WSMP
and Lake Wylie
recommended strategies; minimal impact of increased
flooding potential in Catawba-Wateree reservoirs based on
modeled assessment.
U.S. Drought Monitor
Current methodology (worst case Drought Monitor condition
area -weighted average
in basin) is not indicative of basin -wide conditions and can
calculation methodology
unnecessarily prolong drought recovery; proposed
methodology is more indicative of basin -wide average
conditions and consistent with North and South Carolina
resource agencies' approach to use of the U.S. Drought
Monitor; proposed revision more closely aligns this trigger
other drought triggers (storage and streamflow).
LIP Stage determination
Allows faster response during rapidly intensifying drought
frequency of twice per
conditions.
34

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
month
Summary of Comment
Expedite Duke Energy
Allows faster response during rapidly intensifying drought
response time to 1 day
conditions.
for certain LIP response
critical elevation change with the
actions
Wildlife
Reduce Lake Wylie
Improves recreational boating safety; no additional impact as
recreational flow release
this revision acknowledges the 6,000 cfs to 3,000 cfs
be required to be
recreation flow release previously discussed.
Consultation Summary
Consultation resulted in the comments summarized in the following table.
Commenter
Summary of Comment
Duke Energy Response
North
Page 4, bullet #11— Will the Lake James
If a new intake is located
Carolina
critical elevation change with the
on Lake James in the
Wildlife
installation of the new water intake for
future, the intake would
Resource
McDowell County?
be required to be
Commission
operational below the Lake
James Critical Elevation
resulting from the new
powerhouse. Therefore, a
new intake would not
change the Critical
Elevation.
North
Page 5, bullet #17 — Details of the
This section of the
Carolina
drought index are still not clear. In
proposed modified LIP
Wildlife
second sentence you should clarify that
document has been
Resource
the monthly numeric value is the
revised for clarification,
Commission
average drought value of the basin. I say
based upon this comment.
this because you should distinguish
The monthly average will
between the monthly average and the 3-
be based on an area -
month rolling average. More
weighted average. The
importantly, this bullet doesn't define
area -weighted average will
how the monthly average will be
be determined by an Excel
determined. Will it be a weighted
spreadsheet tool which
average (e.g., by area) or a simple
imports GIS -based U.S.
average (part of basin is D1 and part is
Drought Monitor data and
D2, so average is 1.5)? If a weighted
maps overlaid by basin
35

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
36
average, how will you determine area
boundary maps to
under each designation — visual estimate
calculate an exact area -
from map or some other method? What
weighted average.
would the average be for the maps
below?
United
Page 7 of the revision: it should be
The typographical
States Fish
changed from USFSW to USFWS.
correction will be made for
and Wildlife
the final document.
Service
36

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
CRA Appendix D: Maintenance and Emergence Protocol (MEP) Article (applies to NC and
SC)
Statement of Revision
Add National Marine Fisheries Service (NMFS) to the list of resource agencies to be
notified and consulted under the MEP.
Backeround information exalainine the need for the revision
As included in the license issued November 25, 2015, Duke Energy is required to notify
the FERC of any deviations in required flow releases in accordance with the MEP and to
also notify state and federal resource agencies and determine if consultation is
necessary to more fully evaluate the deviation. There have been several such incidents,
some of which have prompted the FERC to inquire why the National Marine Fisheries
Service (NMFS) was not notified or consulted. NMFS is not currently included for
notification or consultation in the MEP. Duke Energy believes it is beneficial and
appropriate to add NMFS to the MEP to be included in notifications and
consultation when MEP -related events occur in South Carolina due to NMFS
jurisdictional interest in endangered species shortnose and Atlantic sturgeon. This
revision also incorporates general terminology updates, Critical Reservoir Elevation
updates, and organization name updates to align with updates in the LIP and MEP.
Actual text of the revision (for ease of identification, text modified from the December
22, 2006, Signature Copy of the CRA, Revision 1 is shown in bold italics)
37

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
APPENDIX D: MAINTENANCE AND EMERGENCY PROTOCOL
(MEP) FOR THE CATAWBA-WATEREE PROJECT
I_GI�•T._R_L��
Under some emergency, equipment failure, maintenance or other abnormal situations,
certain license conditions may be impractical or even impossible to meet and may need
to be suspended or modified temporarily to avoid taking unnecessary risks. The
objectives of this protocol are to define the most likely situations of this type, identify the
potentially impacted license conditions and outline the general approach that the
Licensee will take to mitigate the impacts to license conditions and to communicate with
the resource agencies and affected parties.
Note: Due to the potential variability of these abnormal situations, this protocol is not
intended to give an exact step-by-step solution path. It will, however, provide basic
expectations for the Licensee's approach to dealing with the situation. Specific details
will vary and will be determined on a case-by-case basis as the protocol is being
enacted.
The Licensee will review the requirements of this protocol each time it is used and may
revise the MEP from time to time as noted below.
Human Health and Safety and the integrity of the Public Water Supply and
Electric Systems are of Utmost Importance — Nothing in this protocol will limit the
Licensee's ability to take any and all lawful actions necessary at the Project to
protect human health and safety, protect its equipment from major damage,
protect the equipment of the Large Water Intake owners from major damage, and
ensure the stability of the regional electric grid and public water supply systems. It
is recognized that the Licensee may take the steps that are necessary to protect
these things without prior consultation or notification. Likewise, nothing in this
MEP will limit the States of North Carolina and South Carolina from taking any
and all lawful actions necessary within their jurisdictions to protect human health
and safety. It is recognized that North Carolina and South Carolina may also
take the steps necessary to protect these things without prior consultation or
notification.
2. Normal Full Pond Elevation — Also referred to simply as "full pond," this is the
level of a reservoir that corresponds to the point at which water would first begin
to spill from the reservoir's dam(s) if the Licensee took no action. This level
corresponds to the lowest point along the top of the spillway (including
flashboards) for reservoirs without floodgates and to the lowest point along the
top of the floodgates for reservoirs that have floodgates. To avoid confusion
among the many reservoirs the Licensee operates, it has adopted the practice of
38

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
referring to the Full Pond Elevation for all of its reservoirs as equal to 100.0 ft.
relative. The Full Pond Elevations for the Catawba-Wateree Project reservoirs
are:
Reservoir
Full Pond Elevation
(ft. above Mean Sea Level)
Lake James
1200.0
Lake Rhodhiss
995.1
Lake Hickory
935.0
Lookout Shoals Lake
838.1
Lake Norman
760.0
Mountain Island Lake
647.5
Lake Wylie
569.4
Fishing Creek Reservoir
417.2
Great Falls Reservoir
355.8
Cedar Creek Reservoir
284.4
Lake Wateree
225.5
3. Normal Minimum Elevation — The level of a reservoir (measured in feet above
Mean Sea Level (MSL) or feet relative to the full pond contour with 100.0 ft.
corresponding to full pond) that defines the bottom of the reservoir's Normal
Operating Range for a given day of the year. If inflows and outflows to the
reservoir are kept within some reasonable range of the average or expected
amounts, hydroelectric project equipment is operating properly and no protocols
for abnormal conditions have been implemented, reservoir level excursions
below the Normal Minimum Elevation should not occur.
4. Normal Maximum Elevation — The level of a reservoir (measured in feet above
Mean Sea Level (MSL) or feet relative to the full pond contour with 100.0 ft.
corresponding to full pond) that defines the top of the reservoir's Normal
Operating Range for a given day of the year. If inflows and outflows to the
reservoir are kept within some reasonable range of the average or expected
amounts, hydroelectric project equipment is operating properly, and no protocols
for abnormal conditions have been implemented, reservoir level excursions
above the Normal Maximum Elevation should not occur.
5. Normal Target Elevation — The level of a reservoir (measured in ft above Mean
Sea Level (msl) or feet relative to the full pond contour with 100.0 ft
corresponding to full pond) that the Licensee will endeavor in good faith to
achieve, unless operating in the Low Inflow Protocol, the Maintenance and
Emergency Protocol, the Spring Reservoir Level Stabilization Program (Lakes
James, Norman, Wylie and Wateree only), a Spring Stable Flow Period (Lake
39

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
Wateree only) or a Floodplain Inundation Period (Lake Wateree only). Since
inflows vary significantly and outflow demands also vary, the Licensee will not
always be able to maintain actual reservoir level at the Normal Target Elevation.
The Normal Target Elevation falls within the Normal Operating Range, but it is
not always the average of the Normal Minimum and Normal Maximum
Elevations.
6. Normal Operating Range — The band of reservoir levels within which the
Licensee normally attempts to maintain a given reservoir that it operates on a
given day. Each reservoir has its own specific Normal Operating Range, and that
range is bounded by a Normal Maximum Elevation and a Normal Minimum
Elevation. If inflows and outflows to the reservoir are kept within some reasonable
range of the average or expected amounts, hydro project equipment is
operating properly and no protocols for abnormal conditions have been
implemented, reservoir level excursions outside of the Normal Operating Range
should not occur. The New License for the Catawba-Wateree Project includes
the Normal Operating Ranges for the reservoirs (i.e., Normal
Minimum, Normal Maximum and Normal Target Elevations) as listed in the
Reservoir Elevations License Article.
7. Returning to Normal — Some of the abnormal situations noted in this MEP can
impact the Licensee's ability to operate the hydro project in the most efficient and
safest manner for power production. The Licensee will therefore endeavor in
good faith to repair existing hydro project equipment and facilities and return them
to service within a reasonable period of time, commensurate with the severity
of the equipment / facility repair requirements. If the Licensee decides that
repair is not cost-effective or that hydro station or dam retirement is necessary,
the Licensee will notify the Parties to the Comprehensive
Relicensing Agreement (CRA) and consult with them as well as the FERC to
determine any necessary modifications of the New License and/or this
Agreement.
8. Incidental Maintenance — These are maintenance activities at hydro project
works that are very brief in nature or that require minimal if any deviation from
normal license conditions. For the purposes of this protocol, maintenance of
hydro project works that does not require deviation from any license conditions
related to prescribed flow releases from Project structures, or the Normal
Operating Ranges for reservoir levels or is less than 24 hours in duration and will
not require any excursions below any Critical Flows or Critical Reservoir
Elevations is considered Incidental Maintenance and, except for the notification
steps identified in the tables below for communication with resource agencies
and affected parties for conditions that impact prescribed flow releases, Incidental
Maintenance is exempt from the requirements of this protocol.
9. Notification Guidance
a. Scheduled Maintenance that Affects License Conditions — Typically,
scheduled maintenance is planned months in advance. Once a likely
maintenance schedule has been established, the Licensee will endeavor in
40

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
good faith to provide as much advance notice as possible to the affected
parties identified in this protocol.
b. Unscheduled Maintenance and Emergencies that Affect License Conditions —
It is not possible for the Licensee to assure any level of advance notice. For
these situations, the Licensee will endeavor in good faith to inform the
affected parties identified in this protocol within some reasonable amount of
time after the situation has been identified.
10. Relationship Between this Protocol and the Low Inflow Protocol — The Low Inflow
Protocol (LIP) provides for reductions in generation flows, instream flows and
recreational flow releases and modification of the Normal Operating Ranges for
reservoir levels when water demands on the reservoirs substantially exceed net
inflow. Lowered reservoir levels caused by situations addressed under this
Maintenance and Emergency Protocol (MEP) will not invoke implementation of
the LIP. Also, if the LIP has already been implemented at the time that a situation
covered by this MEP is initiated, the Licensee will typically suspend
implementation of the LIP until the MEP situation has been eliminated. The
Licensee may however choose to continue with the LIP if desirable.
11. Peak Recreation Season — The period when recreation use on Project reservoirs
is generally at the highest levels, identified by the Recreation Use and Needs
Study as extending from April 1 st through September 30th.
12. Critical Flows — The minimum flow releases from the hydro developments that
may be necessary to:
a. prevent long-term or irreversible damage to aquatic communities consistent
with the resource management goals and objectives for the affected stream
reaches;
b. provide some basic level of operability for large water intakes located on the
affected stream reaches; and,
c. provide some basic level of water quality maintenance in the affected stream
reaches.
For the purposes of the LIP and this MEP, the Critical Flows are as follows:
a. Linville River, below the Bridgewater Development (Lake James): 75 cubic
feet per second (cfs).
b. Catawba River Bypassed Reach below the Bridgewater Development (Lake
James): 25 cfs.
c. Oxford Regulated River Reach below the Oxford Development (Lake
Hickory): 100 cfs.
d. Lookout Shoals Regulated River Reach below the Lookout Shoals
Development: 80 cfs.
e. Wylie Regulated River Reach below the Wylie Development: 700 cfs
41

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
f. Great Falls Bypassed Reaches (Long and Short) at the Great Falls -Dearborn
Development: 450 cfs and 80 cfs respectively.
g. Wateree Regulated River Reach below the Wateree Development: 800 cfs
h. Leakage flows at the remaining Project structures. Leakage flows are
defined as the flow of water through wicket gates when the hydro units are
not operating and seepage through the Project structures at each
development.
13. Critical Reservoir Elevation — Unless it is otherwise stated as applying only to a
specific intake or type of intake, the Critical Reservoir Elevation is the highest
level of water in a reservoir (measured in feet above Mean Sea Level (mis) or
feet relative to the full pond contour with 100.0 ft. corresponding to full pond)
below which any Large Water Intake used for Public Water Supply or industrial
uses, or any regional power plant intake located on the reservoir will not operate
at its Licensee -approved capacity. The Critical Reservoir Elevations, as of
December 31, 2016, are defined below:
Reservoir
Critical Reservoir Elevation
(ft. relative to local datum)
(100 ft = Full Pond)
Type of Limit
Lake James
50.0
Power Production
Lake Rhodhiss
89.4
Municipal Intake
Lake Hickory
94.0
Municipal Intake
Lookout Shoals Lake
74.9
Municipal Intake
Lake Norman
90.0
Power Production
Mountain Island Lake
90.5
Municipal Intake
Lake Wylie
92.6
Industrial Intake
Fishing Creek Reservoir
95.0
Municipal Intake
Great Falls Reservoir
87.2
Power Production
Cedar Creek Reservoir
80.3
Power Production
Lake Wateree
92.5
Municipal Intake
14. Organizational abbreviations include the Federal Energy Regulatory
Commission (FERC), the North Carolina Department of Environmental Quality
(NCDEQ), North Carolina Wildlife Resources Commission (NCWRC), North
Carolina State Historic Preservation Office (NCSHPO), South Carolina
Department of Natural Resources (SCDNR), South Carolina Department of
Health and Environmental Control (SCDHEC), South Carolina State Historic
Preservation Office (SCSHPO), United States Fish & Wildlife Service (USFWS),
United States Geological Survey (USGS), National Marine Fisheries Service
42

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
(NMFS), American Whitewater (AW), United States Bureau of Indian Affairs
(B/A), Catawba Indian Nation (CIN) and the Eastern Band of Cherokee Indians
(EBCI).
15. Voltage and Capacity Emergencies — The electric transmission system serving
the Project area is part of the Licensee's main transmission system. The
Licensee's system is connected to other large transmission systems located in
the southeast. If the Licensee's system reliability is at risk due to Voltage and
Capacity Emergencies, the ability to provide secure and continuous electric
service to the Licensee's electric customers becomes compromised. The
Licensee's System Operating Center (SOC) and Transmission Control Center
(TCC) continuously monitor the electric transmission system. Therefore, for the
purposes of this protocol, a Voltage or Capacity Emergency shall exist when
declared by the Licensee's SOC or TCC.
16. Large Water Intake — any water intake (e.g., public water supply, industrial,
agricultural, power plant, etc.) having a maximum instantaneous capacity greater
than or equal to one Million Gallons per Day (MGD) that withdraws water from
the Catawba-Wateree River Basin.
17. Preparation for High Inflow Events — With modern forecasting, it is more possible
than ever to predict large high inflow events and to increase generation hours to
reduce reservoir levels in order to mitigate the potential for spilling and high
water. Typically, this type of advance action is taken from 1 to 5 days or more
before the expected arrival of the storm. It is assumed that the Normal Operating
Ranges of reservoir levels may not include adequate flexibility (i.e. band width) to
allow for this type of reservoir level reduction under heavy inflow circumstances,
and therefore, allowances are made in this MEP to lower reservoir levels below
the Normal Minimum Elevations if needed in preparation for such events.
18. Large Extended Drawdown — Any drawdown of a Project reservoir that will
expose substantial lakebed areas for an extended period of time that are not
normally exposed during the year. For the purposes of this document, a large
extended drawdown is any drawdown that is expected to maintain lake elevation
for at least 30 consecutive days at levels that are at least five feet below the
lowest Normal Minimum Elevation for that reservoir.
43

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
19. Revising the MEP — The Licensee will review the requirements of this MEP each
time it is used and will consult with the organizations listed in Item 14 above
(except the FERC) if the Licensee determines that revisions are warranted. The
Licensee will file the revised MEP with the FERC, including filing a license
amendment request if the Licensee determines that the amendment is needed. If
any modifications of the MEP require amendment of the New License, the
Licensee will provide notice to all Parties to the CRA advising them of the
proposed license article amendment prior to filing the license amendment
request for FERC approval. The filing of a revised MEP by the Licensee will not
constitute or require modification to the CRA and any Party to the CRA may be
involved in the FERC's public process for assessing the revised MEP.
20. Instream Flows For Recreation — The New License for the Project includes
the prescribed recreational flow releases as listed in the Recreational
Flows License Article.
21. Minimum Flows — The New License for the Project includes the minimum
flow requirements as listed in the Minimum Flows License Article, the Wylie
High Inflow Protocol License Article, and the Flows Supporting Public Water
Supply and Industrial Processes License Article.
22. Public Information System — The New License for the Project includes the
requirement to provide information to the public as specified in the Public
Information License Article.
23. Saring Reservoir Level Stabilization Program — The New License for the
Project includes the reservoir level requirements in the Spring Reservoir
Level Stabilization Program License Article.
Guidance for Res op nding to Abnormal Conditions
This section provides guidance for responding to the most likely conditions identified in
the table below. The table identifies the most likely abnormal conditions when this
protocol will be enacted and the license requirements that would most likely be
impacted.
Abnormal Condition
Potentially Impacted License
Requirements
Normal
Flows in
Operating
Flows in
Ranges and
Condition
Condition Name
Indications
Bypassed
Regulated
Stabilization
Letter
River
Reaches
Reaches
Periods for
Reservoir
Levels
44

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
Abnormal Condition
Potentially Impacted License
Requirements
Normal
Flows in
Operating
Condition
Flows in
Regulated
Ranges and
Letter
Condition Name
Indications
Bypassed
River
Stabilization
Reaches
Reaches
Periods for
Reservoir
Levels
A
Hydro Unit
Maintenance will require hydro
X
X
X
Maintenance
unit shutdown.
Maintenance of
Maintenance will require
B
Minimum Flow
interruption of scheduled
X
X
Devices
minimum releases from normal
locations
Imminent Failure or Potential
Failure condition is declared
C
Dam Safety
per Emergency Action Plan or
X
X
X
Emergency
other dam safety concern is
identified.
Voltage or capacity conditions
on the electric grid in the
Licensee's system or the
larger regional electric grid
Voltage or
cause the Licensee's system
D
Capacity
reliability and safety to be at
X
X
X
Emergency
risk and a voltage or capacity
emergency is declared by
Licensee's System Operating
Center (SOC) or Transmission
Control Center (TCC).
Reservoir
Drawdown
Below Normal
Minimum
E
Elevation due to
The reservoir level is below
X
X
X
maintenance,
Normal Minimum Elevation
emergency or
other reasons
(not due to low
or high inflow)
Safe access to bypasses or
River Access
regulated river reaches
F
Special
requires interruption of
X
X
Circumstances
scheduled/minimum releases
from normal locations
45

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
Abnormal Condition
Potentially Impacted License
Requirements
Normal
Flows in
Operating
Condition
Flows in
Regulated
Ranges and
Letter
Condition Name
Indications
Bypassed
River
Stabilization
Reaches
Reaches
Periods for
Reservoir
Levels
Expected or
The water level at a reservoir
G
existing high
is significantly above or below
X
inflow event
the Normal Operating Range
Communication with Resource Agencies and Affected Parties
General Notification
As soon as possible after the Licensee determines that the response to an abnormal
condition will potentially impact license conditions, the Licensee will add appropriate
messages to its public information Web site and/or its reservoir level toll-free phone
system to inform the general public. Specific consultation is discussed below for each
identified abnormal situation.
Notification and Consultation
Notification and consultation requirements are specified for each abnormal condition.
The Licensee will consider options suggested by the identified agencies and
organizations that could lessen the impact of the abnormal condition on the
environmental, cultural and human needs relative to the Project.
46

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
Abnormal Condition A.1 — Scheduled Hydro Unit Maintenance
Mitigating Actions
Scheduling — To the extent practical, the Licensee will avoid scheduling hydro unit
maintenance that would impact flow requirements for aquatic habitat, water quality,
recreation, navigation or downstream water uses during Peak Recreation Season, or
during Spring Reservoir Level Stabilization Periods (Bridgewater, Cowans Ford, Wylie
and Wateree developments only) or during Spring Stable Flow Periods (Wateree
Development only) unless it is likely that the equipment condition will cause damage
or unscheduled unit maintenance if repairs are delayed.
2. Replacing Recreational Flow Releases — If the maintenance operations affect
equipment that provides the normal method of providing prescribed recreational
flows, then the Licensee will endeavor in good faith to replace some or all of the
missed flows that are normally scheduled for recreation. This can be accomplished
by providing replacement flow releases at the Oxford Development, the Wylie
Development, and the Fishing Creek Development (for the Great Falls Bypassed
Reaches) through the use of spillway gates. The preferred method at all of the
developments is to schedule replacement recreational flow releases for another time
after the maintenance operations are completed. The replacement recreational flow
releases will occur during the same calendar year as originally scheduled. An Annual
Recreational Flow Schedule Planning meeting will be held each March (see Section
3.2 of the CRA) and contingency dates for make-up releases can be identified at that
time.
3. Drawing Down the Affected Reservoir —To minimize the impacts to its electric
customers, the Licensee may choose to draw down a reservoir using its hydro units
to minimize spillage from the dam during maintenance operations, but not to levels
below the Critical Reservoir Elevations.
4. Avoid Falling Below the Critical Flows — To the extent practical, the Licensee will
avoid falling below any of the Critical Flows as noted above. If it is determined that
100 percent exceedance of the Critical Flows cannot reasonably be achieved, the
Licensee will work with the resource agencies to (a) monitor any potential aquatic
species impacts in the affected stream segments and (b) replace any aquatic
species mortalities that are identified. The Licensee will also work with any affected
Large Water Intake Owners or Downstream Effluent Dischargers to minimize the
impacts of any reduced flow releases.
47

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
Communication with Resource Agencies and Affected Parties
Abnormal Condition A.1 — Scheduled Hydro Unit Maintenance
Notification
Consultation
Comments
For developments in NC (including Wylie). If the maintenance will
NCDEQ
affect any required flow release or Normal Operating Range or
FERC
NCWRC
Stabilization Requirements for Reservoir Levels, provide notification
USFWS
and initiate consultation as soon as maintenance schedules are
determined (typically months in advance), but at least 10 days prior to
beginning any reservoir drawdown or the hydro unit maintenance.
For developments in SC. If the maintenance will affect any required
SCDNR
flow release or Normal Operating Range or Stabilization
FERC
SCDHEC
Requirements for Reservoir Levels, provide notification and initiate
USFWS
consultation as soon as maintenance schedules are determined
NMFS
(typically months in advance), but at least 10 days prior to beginning
any reservoir drawdown or the hydro unit maintenance.
AW
Consult at least 10 days prior to maintenance if it will affect the
prescribed recreational flow releases.
NCSHPO
Consult at least 10 days prior to maintenance or beginning any
SCSHPO
reservoir drawdown if maintenance will affect Historic Properties
CIN
(NCSHPO or SCSHPO as appropriate) and include consultation with
EBCI
CIN and EBCI if the maintenance will result in a Large Extended
Drawdown.
BIA
Consult at least 10 days prior to maintenance, if it will affect normal
CIN
minimum flow releases from the Wylie Development.
Large Water
Intake Owners'
Consult with intake owners and downstream effluent dischargers at
Downstream
least 10 days prior to beginning maintenance or any reservoir
Effluent
drawdown if flow releases below Critical Flows will be required.
Dischargers'
Access Area
The Licensee will conduct notification procedures for any temporary
Closure
recreation facility/Access Area closures (e.g., closure due to
Notification
extended low reservoir levels) in accordance with the Recreation
Management Plan.
As soon as possible after the Licensee determines that the response
to an abnormal condition will potentially impact license conditions,
General
the Licensee will add appropriate messages to its public information
Web site and its reservoir level toll-free phone system to inform the
general public.
Note 1 — If affected by the maintenance.
48

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
Abnormal Condition A.2 — Unscheduled Hydro Unit Maintenance
Mitigating Actions
Replacing Recreational Flow Releases — If the maintenance affects equipment that
provides the normal method of providing prescribed recreational flows, then the
Licensee will endeavor in good faith to replace some or all of the missed flows that
are normally scheduled for recreation. This can be accomplished by providing
replacement flow releases at the Oxford Development, Wylie Development, and the
Fishing Creek Development (for the Great Falls Bypassed Reaches) through the use
of spillway gates. The preferred method at all the developments is to schedule
replacement recreational flow releases for another time after the maintenance
operations are complete. The replacement recreational flow releases will occur
during the same calendar year as originally scheduled. An Annual Recreational Flow
Schedule Planning meeting will be held each March (see Section 3.2 of the CRA) and
contingency dates for make-up releases can be identified at that time.
2. Drawing Down the Affected Reservoir —To minimize the impacts to its electric
customers, the Licensee may choose to draw down a reservoir using its hydro units
to minimize spillage from the dam during maintenance operations, but not to levels
below the Critical Reservoir Elevations.
3. Avoid Falling Below the Critical Flows — To the extent practical, the Licensee will
avoid falling below any of the Critical Flows as noted above. If it is determined that
100 percent exceedance of the Critical Flows cannot reasonably be achieved, the
Licensee will work with the resource agencies to (a) monitor any potential aquatic
species impacts in the affected stream segments and (b) replace any aquatic
species mortalities that are identified. The Licensee will also work with any affected
Large Water Intake Owners and Downstream Effluent Dischargers to minimize the
impacts of any reduced flow releases.
49

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
Communication with Resource Agencies and Affected Parties
Abnormal Condition A.2 — Unscheduled Hydro Unit Maintenance
Notification
Consultation
Comments
For developments in NC (including Wylie). If the maintenance will
FERC
NCDEQ
affect any required flow release or Normal Operating Range or
NCDEQ
NCWRC
Stabilization Requirements for Reservoir Levels, perform notification
NCWRC
USFWS
as soon as possible after the unscheduled maintenance begins, but
USFWS
no longer than 5 days afterwards. Begin consultation within 10 days
after the unscheduled maintenance begins.
FERC
SCDNR
For developments in SC. If the maintenance will affect any required
SCDNR
SCDHEC
flow release or Normal Operating Range or Stabilization
SCDHEC
USFWS
USFWS
Requirements for Reservoir Levels, perform notification as soon as
USFWS
NMFS
possible after the unscheduled maintenance begins, but no longer
NMFS
than 5 days afterwards. Initiate consultation within 10 days.
AW
AW
Notify (within 5 days) and consult (within 10 days) afterwards if
maintenance will affect the prescribed recreational flow releases.
NCSHPO
NCSHPO
Notify (within 5 days) and consult (within 10 days) afterwards with
SCSHPO
SCSHPO
NCSHPO and SCSHPO (as appropriate) if maintenance will affect
CIN
CIN
Historic Properties and include consultation with CIN and EBCI if the
EBCI
EBCI
maintenance will result in a Large Extended Drawdown.
BIA
BIA
Notify (within 5 days) and consult (within 10 days) afterwards if
CIN
CIN
maintenance affects normal minimum flow releases from the Wylie
Development.
Large Water
Large Water
Intake Owners'
Intake Owners'
Notify (within 5 days) and consult (within 10 days) afterwards with
Downstream
Downstream
intake owners and downstream effluent dischargers if flow releases
Effluent
Effluent
below Critical Flows are required.
Dischargers'
Dischargers'
Access Area
The Licensee will conduct notification procedures for any temporary
Closure
recreation facility/Access Area closures (e.g., closure due to
Notification
extended low reservoir levels) in accordance with the Recreation
Management Plan.
As soon as possible after the Licensee determines that the response
to an abnormal condition will potentially impact license conditions,
General
the Licensee will add appropriate messages to its public information
Web site and its reservoir level toll-free phone system to inform the
general public.
Note 1 — If affected by the maintenance.
50

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
Abnormal Condition 13.1 — Maintenance of the Normal Means of
Providing Minimum Flows (Scheduled)
Mitigating Actions
1. Scheduling — To the extent practical, the Licensee will avoid scheduling maintenance
that would impact the ability of the Licensee to release flows for aquatic habitat,
water quality or downstream water uses, unless it is likely that the equipment
condition will cause damage or an unscheduled maintenance condition if repairs are
delayed.
2. Providing Minimum Flows — If the maintenance cannot avoid impacting minimum
flows for aquatic habitat, water quality or downstream water uses, then the Licensee
will endeavor in good faith to provide some of the minimum flows in the affected
stream reaches. This can be accomplished by partially opening spillway gates at the
Oxford Development, the Wylie Development and the Fishing Creek Development (for
the Great Falls Bypassed Reaches). At all other sites, leakage from the dams or
other means of releasing flows (e.g., pulsing of hydro units at Bridgewater) will be
provided during the maintenance. Note that it would be a very unusual occurrence to
not have any generation or spill control equipment available at these sites.
3. Avoid Falling Below the Critical Flows — To the extent practical, the Licensee will
avoid falling below any of the Critical Flows as noted above. If it is determined that
100 percent exceedance of the Critical Flows cannot reasonably be achieved, the
Licensee will work with the resource agencies to (a) monitor any potential aquatic
species impacts in the affected stream segments and (b) replace any aquatic
species mortalities that are identified. The Licensee will also work with any affected
Large Water Intake Owners and Downstream Effluent Dischargers to minimize the
impacts of any reduced flow releases.
51

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
Communication with Resource Agencies and Affected Parties
Abnormal Condition B.1 — Maintenance of the Normal Means of Providing Minimum Flows (Scheduled)
Notification
Consultation
Comments
NCDEQ
NCWRC
USFWS
For developments in NC (including Wylie). If the maintenance cannot
Large Water
avoid impacting minimum flows for aquatic habitat, water quality or
FERC
Intake Owners'
downstream water uses, provide notification and initiate consultation
as soon as maintenance schedules are determined (typically months
Downstream
in advance), but at least 10 days prior to beginning the maintenance.
Effluent
Dischargers'
SCDNR
SCDHEC
USFWS
NMFS
For developments in SC. If the maintenance cannot avoid impacting
minimum flows for aquatic habitat, water quality or downstream
FERC
Large Water
water uses, provide notification and initiate consultation as soon as
Intake Owners'
maintenance schedules are determined (typically months in
advance), but at least 10 days prior to beginning the maintenance.
Downstream
Effluent
Dischargers'
Consult if maintenance affects normal minimum flow releases from
B/A
the Wylie Development, as soon as maintenance schedules are
CIN
determined (typically months in advance), but at least 10 days prior
to beginning the maintenance.
As soon as possible after the Licensee determines that the response
to an abnormal condition will potentially impact license conditions,
General
the Licensee will add appropriate messages to its public information
Web site and/or its reservoir level toll-free phone system to inform
the general public.
Note 1 — If affected by the maintenance.
52

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
Abnormal Condition 13.2 — Maintenance of the Normal Means of
Providing Minimum Flows (Unscheduled)
Mitigating Actions
Providing Minimum Flows — If the maintenance cannot avoid impacting minimum
flows for aquatic habitat, water quality or downstream water uses, then the Licensee
will endeavor in good faith to provide some of the minimum flows in the affected
stream reaches. This can be accomplished by partially opening spillway gates at the
Oxford Development, the Wylie Development and the Fishing Creek Development (for
the Great Falls Bypassed Reaches). At all other sites, leakage from the dams or
other means of releasing flows (e.g., pulsing of hydro units at Bridgewater) will be
provided during the maintenance. Note that it would be a very unusual occurrence to
not have any generation or spill control capability available at these sites.
2. Avoid Falling Below the Critical Flows — To the extent practical, the Licensee will
avoid falling below any of the Critical Flows as noted above. If it is determined that
100 percent exceedance of the Critical Flows cannot reasonably be achieved, the
Licensee will work with the resource agencies to (a) monitor any potential aquatic
species impacts in the affected stream segments and (b) replace any aquatic
species mortalities that are identified. The Licensee will also work with any affected
Large Water Intake Owners and Downstream Effluent Dischargers to minimize the
impacts of any reduced flow releases.
53

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
Communication with Resource Agencies and Affected Parties
Abnormal Condition 13.2 — Maintenance of the Normal Means of Providing Minimum Flows
(Unscheduled)
Notification
Consultation
Comments
FERC
NCDEQ
NCDEQ
NCWRC
NCWRC
USFWS
USFWS
For developments in NC (including Wylie). If the maintenance cannot
avoid impacting minimum flows for aquatic habitat, water quality or
Large Water
Large Water
downstream water uses, perform notification as soon as possible
Intake Owners
Intake Owners'
after the unscheduled maintenance begins, but no longer than 5 days
afterwards. Begin consultation within 10 days after the unscheduled
Downstream
Downstream
maintenance begins.
Effluent
Effluent
Dischargers'
Dischargers'
FERC
SCDNR
SCDNR
SCDHEC
SCDHEC
USFWS
USFWS
NMFS
NMFS
For developments in SC. If the maintenance cannot avoid impacting
minimum flows for aquatic habitat, water quality or downstream
Large Water
Large Water
water uses, perform notification as soon as possible after the
Intake Owners
Intake Owners'
unscheduled maintenance begins, but no longer than 5 days
afterwards. Initiate consultation within 10 days.
Downstream
Downstream
Effluent
Effluent
Dischargers'
Dischargers'
Notify if maintenance affects normal minimum flow releases from the
BIA
BIA
Wylie Development, as soon as possible after the unscheduled
CIN
CIN
maintenance begins, but no longer than 5 days afterwards. Initiate
consultation within 10 days.
As soon as possible after the Licensee determines that the response
to an abnormal condition will potentially impact license conditions,
General
the Licensee will add appropriate messages to its public information
Web site and/or its reservoir level toll-free phone system to inform
the general public.
Note 1 — If affected by the maintenance.
54

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
Abnormal Condition C — Dam Safety Emergency
Mitigating Actions
Safety Must Come First — If an Imminent Failure or Potential Failure condition
is declared per the Licensee's Emergency Action Plan, or other dam safety
concerns arise, the Licensee may modify or suspend any license conditions
immediately and for as long as necessary to restore the dam to a safe
condition.
Communication with Resource Agencies and Affected Parties
Abnormal Condition C — Dam Safety Emergency
Notification
Consultation
Comments
Conducted strictly in accordance with the Licensee's Emergency
Action Plan. In cases where dam safety concerns arise that are
During EAP Imminent Failure or
not an Imminent Failure or Potential Failure Condition per the
Potential Failure Conditions
Licensee's Emergency Action Plan, consultation with resource
agencies and affected parties will occur as soon as possible, after
the dam safety concern arises.
As soon as possible after the Licensee determines that the
response to an abnormal condition will potentially impact license
Once Dam Safety Conditions Have
conditions, the Licensee will add appropriate messages to its
Stabilized
public information Web site and/or its reservoir level toll-free phone
system to inform the general public.
Access Area
The Licensee will conduct notification procedures for any
Closure
temporary recreation facility/Access Area closures (e.g., closure
Notification
due to extended low reservoir levels) in accordance with the
Recreation Management Plan.
55

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
Abnormal Condition D — Voltage and Capacity Emergencies
Mitigating Actions
Suspension of the Normal Operating Ranges and Spring Stabilization Periods for
Reservoir Levels — If a voltage or capacity emergency (as defined above) occurs, the
Licensee may modify or suspend reservoir level operating limitations immediately and
for as long as necessary if doing so would allow additional hydro station operation
that is needed to restore the electric grid to a stable condition. Reservoir levels
will not be reduced below the Critical Reservoir Elevations noted above.
2. Conserving Water for Power Generation — If a voltage or capacity emergency (as
defined above) occurs and if it is expected to continue for an extended period of time
(e.g. two weeks or more), the Licensee may reduce minimum flows to the Critical
Flows (as defined above) and may modify or suspend any scheduled recreational
flow releases, and may at Lake Wateree, modify or suspend any Spring Stable Flows
or Floodplain Inundation Flows if taking those actions is necessary to maintain the
water inventory in Project reservoirs for use during the Voltage and Capacity
Emergency. During a Voltage and Capacity Emergency, the Licensee will not deviate
from the normal license conditions to conserve water for power generation strictly
as a cost avoidance measure, but only to assist in addressing the emergency.
3. Replacing Lost Recreational Flow Releases — If scheduled recreational flow releases
are lost, then once the emergency is over, the Licensee will endeavor in good faith to
reschedule the releases during the same calendar year as originally scheduled. An
Annual Recreational Flow Schedule Planning meeting will be held each March (see
Section 3.2 of the CRA) and contingency dates for make-up releases can be
identified at that time.
W.

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
Communication with Resource Agencies and Affected Parties
Abnormal Condition D — Voltage and Capacity Emergencies
Notification
Consultation
Comments
FERC
NCDEQ
For developments in NC (Including Wylie). Perform notification as
NCDEQ
NCWRC
soon as possible, but no longer than 5 days following the deviation
NCWRC
USFWS
from a license condition for Voltage or Capacity Emergency reasons.
USFWS
Initiate consultation as soon as possible.
FERC
SCDNR
SCDNR
For developments in SC. Perform notification as soon as possible,
SCDHEC
SCDHEC
but no longer than 5 days following the deviation from a license
USFWS
USFWS
condition for Voltage or Capacity Emergency reasons. Initiate
NMFS
NMFS
consultation as soon as possible.
AW
AW
Notify (within 5 days) and consult as soon as possible if maintenance
will affect the prescribed recreational flow releases.
NCSHPO
NCSHPO
Notify (within 5 days) and consult as soon as possible with NCSHPO
SCSHPO
SCSHPO
and SCSHPO (as appropriate) if Voltage or Capacity Emergency
CIN
CIN
will affect Historic Properties.
EBCI
EBCI
BIA
BIA
Notify (within 5 days) and consult as soon as possible if Voltage or
CIN
CIN
Capacity Emergency affects normal minimum flow releases from the
Wylie Development.
Access Area
The Licensee will conduct notification procedures for any temporary
Closure
recreation facility/Access Area closures (e.g., closure due to
Notification
extended low reservoir levels) in accordance with the Recreation
Management Plan.
As soon as possible after the Licensee determines that the response
to an abnormal condition will potentially impact license conditions,
General
the Licensee will add appropriate messages to its public information
Web site and its reservoir level toll-free phone system to inform the
general public.
57

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
Abnormal Condition E.1 - Reservoir Drawdown (Planned)
Mitigating Actions
1. Scheduling — To the extent practical, the Licensee will avoid scheduling reservoir
drawdowns (i.e., reducing water level to below the Normal Minimum Elevation)
that would impact the ability of the Licensee to release the prescribed flows for
aquatic habitat, water quality, recreation, navigation or downstream water uses.
Also, to the extent practical, the Licensee will avoid scheduling reservoir drawdowns
during the Peak Recreation Season or during Spring Reservoir Level Stabilization
Periods (Bridgewater, Cowans Ford, Wylie and Wateree developments only) or
during Spring Stable Flow Periods (Wateree Development only).
2. Alternative Means to Provide Minimum Flows — If the drawdown cannot avoid
impacting minimum flows for aquatic habitat, water quality or downstream water uses,
then the Licensee will endeavor in good faith to provide some of the minimum flows
in the affected stream reaches by utilizing the generating equipment, spill gates or
leakage at the developments for flows required downstream of the powerhouses.
Note that it would be a very unusual occurrence to not have any generating units or
spill devices available at these sites for flows required downstream of powerhouses.
3. Replacing Recreational Flow Releases — If the reservoir drawdown impacts normally
scheduled recreational flows, then the Licensee will endeavor in good faith to replace
some or all of the missed recreational flows. This can be accomplished by providing
replacement flow releases at the Oxford Development, the Wylie Development, and
the Fishing Creek Development (for the Great Falls Bypassed Reaches) through the
use of spillway gates. The preferred method at all of the developments is to schedule
replacement recreational flow releases for another time after the drawdown is
completed. The replacement recreational flow releases will occur during the same
calendar year as originally scheduled. An Annual Recreational Flow Schedule
Planning meeting will be held each March (see Section 3.2 of the CRA) and
contingency dates for make-up releases can be identified at that time.
4. Avoid Falling Below the Critical Flows — To the extent practical, the Licensee will
avoid falling below any of the Critical Flows as noted above. If it is determined that
100 percent exceedance of the Critical Flows cannot reasonably be achieved, the
Licensee will work with the resource agencies to (a) monitor any potential aquatic
species impacts in the affected stream segments and (b) replace any aquatic
species mortalities that are identified. The Licensee will also work with any affected
Large Water Intake Owners and Downstream Effluent Dischargers to minimize the
impacts of the reduced flow releases.
5. Avoid Falling Below Critical Reservoir Elevations — To the extent practical, the
Licensee will avoid falling below any of the Critical Reservoir Elevations as noted
above. If it is determined that 100 percent exceedance of the Critical Reservoir
Elevations cannot reasonably be achieved, the Licensee will work with any affected
Large Water Intake Owners to minimize the impacts of the drawdown.

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
Communication with Resource Agencies and Affected Parties
Abnormal Condition E.1 — Reservoir Drawdown (Planned)
Notification
Consultation
Comments
NCDEQ
For developments in NC (including Wylie). Provide notification and
FERC
NCWRC
consult as soon as approximate dates are determined (typically
USFWS
months in advance), but at least 10 days prior to beginning
drawdown.
SCDNR
SCDHEC
For developments in SC. Provide notification and consult as soon as
FERC
USFWS
approximate dates are determined (typically months in advance), but
NMFS
at least 10 days prior to beginning drawdown.
NCSHPO
SCSHPO
Consult in the event of a Large Extended Drawdown as soon as
CIN
approximate dates are determined (typically months in advance), but
EBCI
at least 10 days prior to beginning drawdown.
BIA
AW
Consult at least 10 days prior to beginning drawdown if it will affect
the prescribed recreational flow releases.
Large Water Intake
If the drawdown will go below Critical Reservoir Elevations that affect
Owners
the operations of a Large Water Intake located in a reservoir or will
Downstream
cause flow releases to drop below Critical Flows supporting Large
Effluent
Water Intakes or Downstream Effluent Dischargers, the Licensee will
Dischargers'
consult with the owner of the intake or discharge facility as soon as
approximate dates are known (typically months in advance), but at
least 10 days prior to beginning the drawdown.
Access Area
The Licensee will conduct notification procedures for any temporary
Closure
recreation facility/Access Area closures (e.g., closure due to
Notification
extended low reservoir levels) in accordance with the Recreation
Management Plan.
As soon as possible after the Licensee determines that the response
to an abnormal condition will potentially impact license conditions,
General
the Licensee will add appropriate messages to its public information
Web site and its reservoir level toll-free phone system to inform the
general public.
Note 1 — If affected by the reservoir drawdown.
59

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
Abnormal Condition E.2 — Reservoir Drawdown (Unplanned)
Mitigating Actions
Alternative Means to Provide Minimum Flows — If the drawdown (i.e., reducing
water level to below the Normal Minimum Elevation) cannot avoid impacting
minimum flows for aquatic habitat, water quality, navigation or downstream water
uses, then the Licensee will endeavor in good faith to provide some or all of the
missed minimum flows in the affected stream reaches. This can be accomplished by
using the generating equipment, spill gates or leakage at the developments for flows
required downstream of the powerhouses. Note that it would be a very unusual
occurrence to not have any generating units or spill devices available at these sites
for flows required downstream of powerhouses.
2. Replacing Recreational Flow Releases — If the reservoir drawdown impacts normally
scheduled recreational flows, then the Licensee will endeavor in good faith to replace
some or all of the missed recreational flows. This can be accomplished by providing
replacement flow releases at the Oxford Development, the Wylie Development, and
the Fishing Creek Development (for the Great Falls Bypassed Reaches) through the
use of spillway gates. The preferred method at all of the developments is to schedule
replacement recreational flow releases for another time after the drawdown is
completed. The replacement recreational flow releases will occur during the same
calendar year as originally scheduled. An Annual Recreational Flow Schedule
Planning meeting will be held each March (see Section 3.2 of the CRA) and
contingency dates for make-up releases can be identified at that time.
3. Avoid Falling Below the Critical Flows — To the extent practical, the Licensee will
avoid falling below any of the Critical Flows as noted above. If it is determined that
100 percent exceedance of the Critical Flows cannot reasonably be achieved, the
Licensee will work with the resource agencies to (a) monitor any potential aquatic
species impacts in the affected stream segments and (b) replace any aquatic
species mortalities that are identified. The Licensee will also work with any affected
Large Water Intake Owners and Downstream Effluent Dischargers to minimize the
impacts of the reduced flow releases.
4. Avoid Falling Below Critical Reservoir Elevations — To the extent practical, the
Licensee will avoid falling below any of the Critical Reservoir Elevations as noted
above. If it is determined that 100 percent exceedance of the Critical Reservoir
Elevations cannot reasonably be achieved, the Licensee will work with any affected
Large Water Intake Owners to minimize the impacts of the drawdown.
Z

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
Communication with Resource Agencies and Affected Parties
Abnormal Condition E.2 — Reservoir Drawdown (Unplanned)
Notification
Consultation
Comments
FERC
NCDEQ
NCDEQ
NCWRC
NCWRC
USFWS
USFWS
For developments in NC (including Wylie). If the drawdown cannot
Large Water Intake
avoid impacting minimum flows for aquatic habitat, water quality or
Large Water
Owners '
downstream water uses, perform notification as soon as possible,
Intake Owners'
but no longer than 5 days after the drawdown begins. Begin
Downstream
consultation within 10 days after the drawdown begins.
Downstream
ffluent
Effluent
Dischargers'
Dischargers'
FERC
SCDNR
SCDNR
SCDHEC
SCDHEC
USFWS
USFWS
NMFS
NMFS
For developments in SC. If the drawdown cannot avoid impacting
minimum flows for aquatic habitat, water quality, navigation or
Large Water
Large Water Intake
downstream water uses, perform notification as soon as possible,
Intake Owners
Owners'
but no longer than 5 days after the drawdown begins. Begin
consultation within 10 days after the drawdown begins.
Downstream
Downstream
Effluent
Effluent
Dischargers'
Dischargers'
BIA
BIA
If the drawdown affects releases from the Wylie Development,
CIN
CIN
notify as soon as possible, but no longer than 5 days after the
drawdown begins. Begin consultation within 10 days after the
drawdown begins.
AW
AW
Notify (within 5 days) and consult as soon as possible if the
drawdown will affect prescribed recreational flow releases.
Access Area
The Licensee will conduct notification procedures for any
Closure
temporary recreation facility/Access Area closures (e.g., closure
Notification
due to extended low reservoir levels) in accordance with the
Recreation Management Plan.
As soon as possible after the Licensee determines that the
response to an abnormal condition will potentially impact license
General
conditions, the Licensee will add appropriate messages to its
public information Web site and its reservoir level toll-free phone
system to inform the general public.
Note 1 — If affected by the drawdown.
61

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
Abnormal Condition F — Special River Access Circumstances
Mitigating Actions
1. Scheduling — To the extent practical, the Licensee will 1) avoid scheduling Special
River Access Circumstances that would impact the ability of the Licensee to release
flows for aquatic habitat, water quality, navigation, recreation or downstream water
uses and 2) avoid scheduling during Peak Recreation Season.
2. Replacing Recreational Flow Releases — If scheduling Special River Access impacts
normally scheduled recreational flows, then the Licensee will endeavor in good faith
to replace some or all of the missed recreational flows. This can be accomplished by
providing replacement flow releases at the Oxford Development, the Wylie
Development, and the Fishing Creek Development (for the Great Falls Bypassed
Reaches) through the use of spillway gates. The preferred method at all of the
developments is to schedule replacement recreational flow releases for another time
after the Special River Access Circumstance is completed. The replacement
recreational flow releases will occur during the same calendar year as originally
scheduled. An Annual Recreational Flow Schedule Planning meeting will be held
each March (see Section 3.2 of the CRA) and contingency dates for make-up
releases can be identified at that time.
3. Avoid Falling Below the Critical Flows — To the extent practical, the Licensee will
avoid falling below any of the Critical Flows as noted above. If it is determined that
100 percent exceedance of the Critical Flows cannot reasonably be achieved, the
Licensee will work with the resource agencies to (a) monitor any potential aquatic
species impacts in the affected stream segments and (b) replace any aquatic
species mortalities that are identified. The Licensee will also work with any affected
Large Water Intake Owners and Downstream Effluent Dischargers to minimize the
impacts of the reduced flow releases.
4. Avoid Falling Below Critical Reservoir Elevations — To the extent practical, the
Licensee will avoid falling below any of the Critical Reservoir Elevations as noted
above. If it is determined that 100 percent exceedance of the Critical Reservoir
Elevations cannot reasonably be achieved, the Licensee will work with any affected
Large Water Intake Owners to minimize the impacts of the drawdown.
M

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
Communication with Resource Agencies and Affected Parties
Abnormal Condition F — Special River Access Circumstances
Notification
Consultation
Comments
NCDEQ
NCWRC
USFWS
For developments in NC (including Wylie). If the circumstances
cannot avoid impacting minimum flows for aquatic habitat, water
Large Water Intake
quality, navigation, recreation or downstream water uses, initiate
FERC
Owners '
consultation as soon as soon as the dates are known, but at least
10 days prior to beginning the temporary flow alteration. Initiate
Downstream
consultation for unplanned river access within 5 days after the
Effluent
temporary flow alteration.
Dischargers'
SCDNR
SCDHEC
USFWS
For developments in SC. If the circumstances cannot avoid
NMFS
impacting minimum flows for aquatic habitat, water quality,
navigation, recreation or downstream water uses, initiate
FERC
Large Water Intake
consultation as soon as soon as the dates are known, but at least
Owners'
10 days prior to beginning the temporary flow alteration. Initiate
consultation for unplanned river access within 5 days after the
Downstream
temporary flow alteration.
Effluent
Dischargers'
If the flow modifications for the planned river access affect flow
BIA
releases from the Wylie Development, initiate consultation as soon
CIN
as the dates are known but at least 10 days prior to beginning the
temporary flow modification. Initiate consultation for unplanned
river access within 5 days after the temporary flow alteration.
AW
AW
Notify (within 5 days) and consult as soon as possible if the
drawdown will affect prescribed recreational flow releases.
Access Area
The Licensee will conduct notification procedures for any
Closure
temporary recreation facility/Access Area closures (e.g., closure
Notification
due to extended low reservoir levels) in accordance with the
Recreation Management Plan.
As soon as possible after the Licensee determines that the
response to an abnormal condition will potentially impact license
General
conditions, the Licensee will add appropriate messages to its
public information Web site and its reservoir level toll-free phone
system to inform the general public.
Note 1 — If affected by Special River Access Circumstances.
63

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
Abnormal Condition G — Expected or Existing High Inflow Event
Mitigating Actions
As outlined in the Key Facts and Definitions section of this protocol, the Licensee
may reduce reservoir levels significantly below the Normal Minimum Elevation, but
not below the Critical Reservoir Elevations in preparation for high inflow events to
minimize the potential for uncontrolled spilling. Reservoir levels may also rise
significantly above Normal Maximum Elevations as a result of high inflow events.
The reservoir levels may be below Normal Minimum Elevations or above Normal
Maximum Elevations for as long as necessary to minimize the effects of
uncontrolled spilling on the Project reservoirs and downstream river reaches and to
minimize reservoir elevations during high inflow events.
Communication with Resource Agencies and Affected Parties
Abnormal Condition G — Expected or Existing High Inflow Event
Notification
Consultation
Comments
FERC
NCDEQ
For developments in NC (including Wylie). The Licensee will perform
NCWRC
notification as soon as possible following or prior to a deviation from
USFWS
license requirements for an existing or expected high inflow event.
FERC
SCDNR
For developments in SC. The Licensee will perform notification as
SCDHEC
soon as possible following or prior to a deviation from license
USFWS
requirements for an existing or expected high inflow event.
NMFS
The Licensee will conduct notification procedures for any temporary
Access Area
recreation facility/Access Area closures (e.g., closure due to
Closure
extended low or high reservoir levels) in accordance with the
Notification
Recreation Management Plan.
As soon as possible after the Licensee determines that the response
to an abnormal condition will potentially impact license conditions,
General
the Licensee will add appropriate messages to its public information
Web site and its reservoir level toll-free phone system to inform the
general public.

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
Identification and assessment of any incremental environmental impacts of the
revision compared to the original WQC
This revision creates no incremental environmental impacts. It expands resource agency
notification and consultation regarding flow and reservoir level deviations and potential
related environmental impacts and mitigation.
Consultation Summary
No comments received for this revision.
C

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
CRA Appendix F: Water Quality Monitoring Plan (WQMP) (applies to NC and SC)
Statement of Revision
CRA Appendix F is the WQMP and is included as a condition of both state WQCs.
Appendix E; Section A-5.0 Water Quality Article; Article — Water Quality Monitoring
Plan of the license issued by the FERC on November 25, 2015 requires:
(A) Within 180 days following the issuance of this license, the Licensee must file
with the Commission, for approval, a Water Quality Monitoring Plan (WQMP) to
monitor compliance with water quality requirements. The plan must include, at a
minimum, identification of compliance monitoring locations and devices at applicable
Project developments as needed to accurately monitor and record flows, dissolved
oxygen, and water temperatures released from Project developments and an
implementation schedule.
Background information explaining the need for the revision
There are two reasons for these revisions. Duke Energy now plans to shift from a fully
in-house implementation, operation, and maintenance of water quality monitoring
equipment, as envisioned when CRA Appendix F was originally written, to a partnership
in which the United States Geological Survey (USGS) locates, installs, and maintains
water quality monitors. Also, in Duke Energy's assessment, the existing CRA Appendix F
may not fully comply with the requirements set forth in the license issued November 25,
2015, as it does not contain an implementation schedule (Implementation schedule is
currently found in CRA Appendix M).
Actual text of the revision
Note that the following revision of the WQMP represents a significant update of the
original WQMP that was included in the December 22, 2006, Signature Copy of the
CRA. Because of the substantial revisions made to text, figures, maps, and format,
individual changes are not tracked to facilitate readability.

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
APPENDIX F: WATER QUALITY MONITORING PLAN (WQMP)
1.0 Introduction........................................................................................................ 69
2.0 Hydro Project Compliance Monitoring............................................................ 69
3.0 Supplemental Trout Habitat Monitoring........................................................ 104
4.0 Trend Monitoring of Water Quality Characteristics ..................................... 106
5.0 References........................................................................................................108
67

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
(intentionally blank)
M3

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
WATER QUALITY MONITORING PLAN (WQMP)
1.0 Introduction
Duke Energy Carolinas, LLC (the "Licensee") received a new operating license ("License") from
the Federal Energy Regulatory Commission (FERC) for the Catawba-Wateree Hydro Project
(the "Project') on November 25, 2015.
Appendix E of the New License requires Duke Energy to file a Water Quality Monitoring Plan
(WQMP) with the FERC for approval. The WQMP must at a minimum include identification of
compliance monitoring locations, devices needed to accurately monitor flows, dissolved oxygen
(DO) concentrations, and water temperature, and an implementation schedule. This WQMP,
developed in consultation with natural resource agencies, has been prepared to meet these
requirements.
The Licensee also submitted one Quality Assurance Project Plan (QAPP) to each state water
quality agency. The QAPP provides the details for project management, measurement/data
acquisition procedures and calibration, data validation, and reporting requirements as specified
by the United States Environmental Protection Agency (USEPA 2001).
The monitoring activities described in this document will be accomplished by a combination of
United States Geological Survey (USGS) stream gages, USGS-operated water quality
monitoring stations, and Licensee monitoring responsibilities (i.e., supplemental trout habitat
monitoring and monitoring trends in water quality for streamflows entering the Project
developments).
2.0 Hydro Project Compliance Monitoring
2.1 Background
The License for the Project specifies flows to be released from various Project developments.
Figure 1 provides a flow routing and compliance flow schematic for the entire Catawba-Wateree
Project. These required flows in the riverine reaches are designed to enhance fish and wildlife
habitat (continuous flows), to meet the needs of downstream water users, to provide periodic
higher flows for recreational activities (water sports) and ecological purposes, and to meet water
quality standards.
Water quality issues that are relevant to the Project include continuous flows, water
temperature, and DO concentrations. Compliance with state DO standards in water released
from all of the Project developments is a requirement for both North and South Carolina's 401
Water Quality Certifications.
.•

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
Figure 1: Project Flow Routing Schematic
Catawba River \
Powerhouse release
Linville River
Recreation release
Catawba
Continuous release
Linville
Regulated reach or
Creek
Arm of
Lake James
Arm of
Lake
Reservoir
Lake
Structure
Lake
Catawba
Paddy Ck
Paddy Ck
Bridgewater
Linville
Dam'
Dam
Spillway' I
Powerhouse
Dam
` - - ---
Paddy Creek
`.
Bypassed Reach
Linville River
+
--- op.
Catawba River Bypassed Reach
Muddy
Johns
Creek
Catawba River
River
Notes:
1. Overflow spillway
2. Spillwaywith gates
3. With flash boards
l
Powerhouse release
0
Recreation release
Continuous release
0
Regulated reach or
Creek
tributary inflow
- - - ►
Bypassed reach
Lake
Reservoir
Dam
Structure
70
Lake Rhodhiss
Rhodhiss Rhodhiss
Dam' Powerhouse
Lake Hickory Lower
Little
OxfortOxford River
IlPowerhoCatawba
Lookout Shoals Lake
Lookout Lookout
Shoals Dam' Shoals PH
Lake Norman
Cowans Cowans
Ford PH I Ford Da M2
Mountain Island Lake
Mountain Mountain
Island PH I Island Dam'
(continued)

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
South Fork
Catawba
River
Notes:
1. Overflow spillway
2. Spillway with gates
3. With flash boards
Rocky
Creek
Mountain Island Lake
Island PH I Island Dam'
Lake Wylie
Wylie Wylie Sugar
Dam' 2 Powerhouse Creek
Catawba River
Fishing Cane
Creek Creek
Fishing Creek Reservoir
Fishing Fishing
Creek PH I Creek Dame
Lower Great Falls I Reservoir
Upper
Wateree
Pond
Pond
Camp
Great Falls
Dearborn
Great Falls
Great Falls
Creek
PH + Dam
Powerhouse
Headworks"'
Diversion"'
Wateree River
Short
Bypass,,' _
-"` Long
Bypass
LEGEND
Cedar Creek Reservoir
Rocky Creek Cedar
PH + Dam' 2 Creek PH
Big
Continuous release
Wateree
Beaver
Creek
tributary inflow
Creek
Bypassed reach
Lake Wateree
Reservoir
Dam
Wateree
Wateree
Plowerhouse Dam'
Wateree River
71
0 Powerhouse release
—► Recreation release
Continuous release
0
Regulated reach or
Creek
tributary inflow
- - - i
Bypassed reach
Lake
Reservoir
Dam
Structure

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
2.2 Sensor Locations
The proposed sites for compliance monitoring of the Project were based upon the various flow
and reservoir level requirements and water quality requirements referenced in Table 1 and the
following criteria:
1. Representative of water quality conditions at all Project flows and operations;
2. Secure (minimize probability of vandalism);
3. Safely accessible for maintenance at all flows; and;
4. Small time-lag between changes in Project operations and monitor response
(minimize downstream distance of sensor).
Table 1. Summary of Project Compliance Verification and Reporting
Comprehensive Relicensing
Agreement Requirement
Developments
Flow and Reservoir Level Requirements
Bypassed Reaches Minimum Continuous
Flow Release
BW GF
Recreational Flow Releases
BW, OX, WY, GF, WA
Minimum Continuous Flows
BW, OX, LS, WY, GF, WA
Minimum Average Daily Flows
RH, CF, MI, FC, CC
Reservoir Elevations
All
Spring Reservoir Level Stabilization
BW, CF, WY, WA
Compliance Monitoring
All
Water Quality Requirements
DO Concentrations
All
Minimum Flows
BW, OX, LS, WY, GF, WA
Compliance Reporting
All
BW = Bridgewater (Lake James)
RH = Rhodhiss
OX = Oxford (Lake Hickory)
LS = Lookout Shoals
CF = Cowans Ford (Lake Norman)
MI = Mountain Island
WY = Wylie
FC = Fishing Creek
GF = Great Falls -Dearborn (Great Falls Reservoir)
72

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
CC = Rocky Creek -Cedar Creek (Cedar Creek Reservoir)
WA = Wateree
The following pages provide maps or aerial photos for each hydro development in the Project
indicating existing and proposed compliance monitoring locations with amplifying information.
73

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
Bridgewater (Lake James)
i F �
v� �+ �,l /i7 ��r'
All
vortb�
',Reservoir Level Konittir
itdty'ES I mss- i.
�y. ` 0 t r, i [ L,E ,.I / z
9 -WS WQ Monito t
A sting USGS Gage
Mdnitor',
{
d A l
r c _
74
Approximate
Map
Data
Recommended
Distance
Comments
Data Collection
Location
Location
Downstream
(miles)
Wireless
Bypassed
Flow sensor at
telemetry to
Reach Minimum
Catawba Dam
n/a
Flow Release
Hydro Station
Continuous
Valve
Computer and
Flows
Staff Gage for
visual
74

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
Device Location Rationale
The ring -jet valve at the Catawba Dam is designed to supply seasonal minimum continuous
flows in the Catawba River Bypassed Reach (Location 1). A sensor, calibrated for flow,
provides a continuous reading of the flow being released into the Catawba River Bypassed
Reach. Since the sensor is located on the dam, it should be secure from vandals.
The channel configuration at USGS Gage 02138520, CATAWBA R AT SR1223 BL LK JAMES
NR BRIDGEWATER, NC, located 0.10 mile below the Bridgewater Powerhouse, is ideally
suited for the expected range of flows originating from the Linville Dam (Location 2 & 3). The
site is located on private property providing a measure of security.
A previous water quality monitoring site was located on the downstream side of the former
Bridgewater Powerhouse. Given the present configuration of the new Bridgewater Powerhouse,
a decision was made to place the water quality monitoring instrument at the existing USGS flow
gage station. Additional downstream continuous DO monitoring conducted in 2012 for aeration
characteristics of the new Bridgewater Powerhouse generating units demonstrated that at the
existing USGS gage site, DO concentrations were virtually identical to those measured
simultaneously at the previously proposed (WQMP version 0) site, which was located 0.05 miles
further downstream at the Powerhouse Road Bridge (HDR 2012). The selected USGS gage site
has been shown to represent the water quality conditions of any combination of hydro unit flow
(including minimum flow). In addition, the site is accessible under all Project flows, and will
' National Water Information System: Web Interface operated by the USGS.
75
Approximate
Map
Data
Recommended
Distance
Comments
Data Collection
Location
Location
Downstream
(miles)
Minimum
USGS Satellite
Continuous
Downstream of
Link to NWIS'
Flows
Powerhouse,
USGS Station
Web Interface
2
Recreational
West Bank of
0.10
02138520
and Turbine
Flows
Linville River
Generation
Project Hourly
Records
Flows
Wireless
Downstream of
In Situ - Pipe and
Telemetry (DO)
Water
Powerhouse,
Instruments
to Hydro Station
3
Temperature,
West Bank of
0.10
n
USGS Station
Computer,
DO
USGS Satellite
Linville River
02138520
Link to NWIS
Web Interface
Bridgewater
Current Device on
Wired to Hydro
4
Reservoir Levels
n/a
the Intake
Station
Forebay
Structure
Computer
Device Location Rationale
The ring -jet valve at the Catawba Dam is designed to supply seasonal minimum continuous
flows in the Catawba River Bypassed Reach (Location 1). A sensor, calibrated for flow,
provides a continuous reading of the flow being released into the Catawba River Bypassed
Reach. Since the sensor is located on the dam, it should be secure from vandals.
The channel configuration at USGS Gage 02138520, CATAWBA R AT SR1223 BL LK JAMES
NR BRIDGEWATER, NC, located 0.10 mile below the Bridgewater Powerhouse, is ideally
suited for the expected range of flows originating from the Linville Dam (Location 2 & 3). The
site is located on private property providing a measure of security.
A previous water quality monitoring site was located on the downstream side of the former
Bridgewater Powerhouse. Given the present configuration of the new Bridgewater Powerhouse,
a decision was made to place the water quality monitoring instrument at the existing USGS flow
gage station. Additional downstream continuous DO monitoring conducted in 2012 for aeration
characteristics of the new Bridgewater Powerhouse generating units demonstrated that at the
existing USGS gage site, DO concentrations were virtually identical to those measured
simultaneously at the previously proposed (WQMP version 0) site, which was located 0.05 miles
further downstream at the Powerhouse Road Bridge (HDR 2012). The selected USGS gage site
has been shown to represent the water quality conditions of any combination of hydro unit flow
(including minimum flow). In addition, the site is accessible under all Project flows, and will
' National Water Information System: Web Interface operated by the USGS.
75

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
facilitate a rapid response at the station to water quality conditions. This gage site, originally
installed in December 2008, was upgraded by the USGS in August 2015 to accommodate
seasonally operated water quality instrumentation. Security from vandals is a minor concern at
this site. Besides seasonal compliance monitoring for generation flow DO, water temperature
will be monitored seasonally at this site to support state trout management initiatives on the
downstream section of the river.
76

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
Rhodhiss
Map
Location
Data
Recommended
Location
Approximate
Distance
Downstream
(miles)
Comments
Data Collection
Planned USGS
Station with In Situ
Wireless
Rhodhiss Road
- Pipe and
Telemetry (DO)
Water
Bridge
Instruments
to Hydro Station
1
Temperature,
Downstream
0.40
Mounted on
Computer,
DO
r
Rhodhiss Hydro
Bridge in Center
USGS Satellite
of Channel
Link to NWIS
(NCDOT approval
Web Interface
required)
77

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
Device Location Rationale
The previous water quality monitoring site was located on the south corner on the downstream
side of the Rhodhiss Powerhouse. That site adequately represented the water quality of the
turbine flow when all the units were identical; however, the turbine venting tests (Duke Power
2005a), indicated that this location was not representative of the combined flows from units with
differing aeration capability. Therefore, the monitor should be moved to the center of the river
channel at the downstream bridge (Location 1). The bridge not only provides an existing
structure to place the water quality monitor in the center of the channel, but this site represents
the water quality conditions of any combination of hydro unit flows (Duke Power 2005a). This
site is accessible under all Project flows, and may provide a rapid response at the station to
water quality conditions. Security from vandals may be a slight concern at this site.
78
Approximate
Map
Data
Recommended
Distance
Comments
Data Collection
Location
Location
Downstream
(miles)
Rhodhiss
Current Device on
Wired to Hydro
2
Reservoir Levels
Forebay
n/a
the Intake
Station
Structure
Computer
Device Location Rationale
The previous water quality monitoring site was located on the south corner on the downstream
side of the Rhodhiss Powerhouse. That site adequately represented the water quality of the
turbine flow when all the units were identical; however, the turbine venting tests (Duke Power
2005a), indicated that this location was not representative of the combined flows from units with
differing aeration capability. Therefore, the monitor should be moved to the center of the river
channel at the downstream bridge (Location 1). The bridge not only provides an existing
structure to place the water quality monitor in the center of the channel, but this site represents
the water quality conditions of any combination of hydro unit flows (Duke Power 2005a). This
site is accessible under all Project flows, and may provide a rapid response at the station to
water quality conditions. Security from vandals may be a slight concern at this site.
78

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
Oxford (Lake Hickory)
79

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
Device Location Rationale
An existing trash gate will be modified to spill well-aerated reservoir near -surface water in order
to provide a constant minimum continuous flow in the downstream channel (Location 2). The
gate will provide the minimum continuous flow during periods of no hydro unit generation. The
gate position will be adjustable and set as required to deliver the required minimum flow based
on target reservoir elevation and expected reservoir elevation range. Generation and
recreational flow requirements will be recorded from the generation records for each turbine.
A previous water quality monitoring site was located in the corner of the Oxford Powerhouse
and wingwall. That site adequately represented the water quality of the turbine flow when all
the hydro units were identical, and prior to the installation of the tailrace buttresses. However,
this site now is not representative of the combined flows from hydro units with differing aeration
capability and the buttresses would effectively prevent Unit 2 water from reaching the sensor
when Unit 1 is generating. Therefore, a decision was made to move the monitor to the
Highway 16 Bridge immediately downstream of the turbines (Location 1). The bridge not only
provides an existing structure to place the water quality monitor in the channel, but this site will
represent the water quality conditions of any combination of hydro unit flows. This site will be
accessible under all Project flows, and will provide a rapid response of the station to water
quality conditions. Security from vandals may be a concern at this site, and adverse effects on
equipment due to occasional high tailwater water levels is a possibility.
:E
Approximate
Map
Data
Recommended
Distance
Comments
Data Collection
Location
Location
Downstream
(miles)
Planned USGS
Station with In Situ
Wireless
Highway 16
- Pipe and
Telemetry (DO)
Water
Bridge
Instruments
to Hydro Station
1
Temperature,
Downstream of
0.15
Mounted on
Computer,
DO
Oxford Hydro
Bridge, South
USGS Satellite
Channel
Link to NWIS
(NCDOT approval
Web Interface
required)
Modified Trash
Minimum
Gate monitored
Wired to Hydro
2
Continuous
Oxford Dam
n/a
via Reservoir
Station
Flows
Elevation and
Computer
Gate Position
Recreational
Highway 16
USGS-Gage
Gage Height
Flows
Bridge
height sensor at
indicator and
3
Project Hourly
Downstream of
0.15
planned USGS
Turbine
Flows
Oxford Hydro,
Water Quality
Generation
Turbine Records
Station
Records
Current Device on
Wired to Hydro
4
Reservoir Levels
Oxford Forebay
n/a
the Intake
Station
Structure
Computer
Device Location Rationale
An existing trash gate will be modified to spill well-aerated reservoir near -surface water in order
to provide a constant minimum continuous flow in the downstream channel (Location 2). The
gate will provide the minimum continuous flow during periods of no hydro unit generation. The
gate position will be adjustable and set as required to deliver the required minimum flow based
on target reservoir elevation and expected reservoir elevation range. Generation and
recreational flow requirements will be recorded from the generation records for each turbine.
A previous water quality monitoring site was located in the corner of the Oxford Powerhouse
and wingwall. That site adequately represented the water quality of the turbine flow when all
the hydro units were identical, and prior to the installation of the tailrace buttresses. However,
this site now is not representative of the combined flows from hydro units with differing aeration
capability and the buttresses would effectively prevent Unit 2 water from reaching the sensor
when Unit 1 is generating. Therefore, a decision was made to move the monitor to the
Highway 16 Bridge immediately downstream of the turbines (Location 1). The bridge not only
provides an existing structure to place the water quality monitor in the channel, but this site will
represent the water quality conditions of any combination of hydro unit flows. This site will be
accessible under all Project flows, and will provide a rapid response of the station to water
quality conditions. Security from vandals may be a concern at this site, and adverse effects on
equipment due to occasional high tailwater water levels is a possibility.
:E

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
Lookout Shoals
Map
Data
Recommended
Approximate
Comments
Data Collection
Location
Location
Distance
Downstream
(miles)
1
Water
East Wingwall -
0.01
In Situ - Pipe and
Wired to Hydro
Temperature,
Tailrace
Instruments at
Station
DO
USGS Station
Computer (DO),
0214244102
USGS Satellite
Link to NWIS
Web Interface
2
Minimum
Lookout Shoals
n/a
n/a
Turbine
Continuous
Hydro
Generation
Flows
Records
Project Hourly
Flows
3
Reservoir Levels
Lookout Shoals
n/a
Current Device on
Wired to Hydro
Forebay
the Intake
Station
Structure
Computer
81

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
Device Location Rationale
The minimum continuous flow will be provided by either one of the small auxiliary hydro units
(Location 2) during periods when the larger hydro units are not operating. The configuration of
the Lookout Shoals tailrace (including a pooled area upstream of the first downstream hydraulic
control, located approximately 500 ft downstream of the powerhouse) exhibits very little stage
change with or without the auxiliary hydro unit generation. In addition, the elevation of the
tailrace is also a function of Lake Norman's reservoir level (at full pond, the reservoir level
extends upstream of the hydraulic control). Therefore, the minimum continuous flow and hourly
flow rates would be best monitored by the individual generation records of each hydro unit at
Lookout Shoals Hydro.
A previous water quality monitoring site was located on the east wingwall downstream of Unit 1.
That site adequately represented the water quality of the turbine flow when all the hydro units
were identical. The nearest downstream structure to place a monitor in the center of the
channel is the 1-40 Bridge, which is 1.3 miles downstream. The 1-40 Bridge site is strongly
influenced by Lake Norman's reservoir level, and the long travel time to the Bridge site would
influence the water quality at minimum flow. Therefore, the 1-40 Bridge location is not preferred
for water quality monitoring. Since no other downstream structure exists to place a monitor in
the center of the river, the wingwall site (Location 1) represents the best logistical option
available for water quality monitoring. This wingwall site will be accessible under all Project
flows, and will provide a rapid response of the station to water quality conditions. The monitor
will be secure since it is located inside the security fence. A seasonally operated USGS Water
Quality Station, USGS 0214244102 CATAWBA RIVER CATAWBA RIVER BL LOOKOUT
SHOALS DAM NR SHARON, NC was activated in March, 2016.
82

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
Cowans Ford (Lake Norman)
Map
Location
Data
Recommended
Location
Approximate
Distance
Downstream
(miles)
Comments
Data Collection
Wireless
Railroad Bridge
In Situ - Pipe and
Telemetry (DO)
Water
Downstream
Instruments at
to Hydro Station
1
Temperature,
Cowans Ford
0.50
USGS Station
Computer,
DO
Hydro
0214264790
USGS Satellite
Link to NWIS
Web Interface
Cowans Ford
Current Device on
Wired to Hydro
2
Reservoir Levels
Forebay
nIa
Intake Structure
Station
Computer
Device Location Rationale
83

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
Even though the previous monitor was placed on the tail -deck of Cowans Ford Hydro, this
location probably represented the water quality of the released flow. However, under multi -unit
operation, the monitor would only record data from the hydro unit flows adjacent to the monitor.
In addition, security at the Cowans Ford Hydro facility is controlled by the McGuire Nuclear site
(Nuclear Regulatory Commission guidelines) and is difficult to enter when operators are not
present. This security issue limits maintenance accessibility. Therefore, the recommended site
for the temperature and DO monitoring is at the railroad bridge 0.5 miles downstream (Location
1). This site enables the monitor to measure water quality from the high-volume hydro unit flow
as well as provide a somewhat secure site. Location of the monitor just west of the downstream
tip of the island ensures that the monitor remains out of the influence of the wastewater
discharge from McGuire Nuclear Station. A seasonally operated USGS Water Quality Station
(USGS 0214264790 CATAWBA R AT RR BRIDGE AB INC 73 AT COWANS FORD, NC) was
activated at this site in June, 2016.
84

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
Mountain Island
Map
Location
Data
Recommended
Location
Approximate
Distance
Downstream
(miles)
Comments
Data Collection
Wireless
In Situ - Pipe and
Telemetry (DO)
Water
Tail Deck -
Instruments
to Hydro Station
1
Temperature,
Tailrace
0.00
n
USGS Station
Computer,
DO
0214267602
USGS Satellite
Link to NWIS
Web Interface
Mt. Island
Current Device on
Wired to Hydro
2
Reservoir Levels
Forebay
nia
Intake Structure
Station
Computer
Device Location Rationale
85

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
Even though the present monitor is on the tail -deck of the hydro (Location 1), this location
probably represents the water quality of the released flow. However, under multi -unit operation,
the monitor would be primarily influenced by the hydro unit flows adjacent to the monitor. Since
no other structure, (e.g., bridge), exists in the center of Mountain Island's tailrace, this tail -deck
location represented the best logistical location available. The site is secure and provides ready
access for maintenance. A seasonally operated USGS Water Quality Station, USGS
0214267602 CATAWBA RIVER DNSTRM DECK MTN IS DAM NR MTN IS, NC was activated
at the site in May, 2015.

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
Wylie
r 1rf�F { Cox K} r •� ; i vR
y� 4
• q. f�
F
' + !
87
I

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
Device Location Rationale
The USGS gage at the Highway 21 Bridge (Location 2/3) is well established and will be used for
verification of minimum continuous flow, recreational flows, and hourly Project flows. In
addition, generation records will be used to supplement the USGS data. However, as this site is
-I
Approximate
Map
Recommended
Distance
Data
Comments
Data Collection
Location
Location
Downstream
(miles)
Planned USGS
Station with In Situ
Pipe and
Wireless
Approximately
Instruments
Telemetry (DO)
Water
0.5 Mile
Deployed into
to Hydro Station
1
Temperature,
Downstream
0.50
Channel from
Computer,
from Hydro (off
West Shore off
USGS Satellite
DO
Ferrell Island)
Ferrell Island
Link to NWIS
(Island property,
Web Interface
owner's approval
required)
USGS Gage
Small Unit
Turbine
Minimum
Turbine
n/a,
02146000,
Generation
2
Continuous
Records,
Flows
Highway 21
3.60
CATAWBA RIVER
Records, and
USGS Gage
NEAR ROCK
USGS Gage
HILL, SC
USGS Gage
Recreational
Turbine
Turbine
Flows
Records,
n/a,
02146000,
Generation
3
Project Hourly
Highway 21
3.60
CATAWBA RIVER
Records, and
Flows
USGS Gage
NEAR ROCK
USGS Gage
HILL, SC
Current Device on
Wired to Hydro
4
Reservoir Levels
Wylie Forebay
n/a
the Intake
Station
Structure
Computer
Device Location Rationale
The USGS gage at the Highway 21 Bridge (Location 2/3) is well established and will be used for
verification of minimum continuous flow, recreational flows, and hourly Project flows. In
addition, generation records will be used to supplement the USGS data. However, as this site is
-I

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
approximately 3.6 miles downstream of the Wylie Powerhouse, the distance makes it less
suitable for locating water quality instruments there.
A previous water quality monitoring site was located in the corner of the powerhouse and
wingwall. Extensive monitoring of DO concentrations in the Wylie tailrace was conducted during
the 2002 turbine venting test (Duke 2005a). These results indicated that the proposed
monitoring location was the closest point to the hydro that best represented the water quality of
the multi -unit flows (Location 1). This test included detailed water quality sampling along several
downstream transects, as opposed to just at the monitoring site. Furthermore, the Wylie tailrace
is very complicated since the island immediately downstream of the powerhouse splits the
water released from the hydro. The flow, from either a single unit or multiple unit operation,
moves around the island and finally merges just upstream of the small island across the channel
from the proposed monitoring location. Use of this location is contingent on being able to get
permission for access from the property owner and on obtaining any necessary easements.
Security from vandals is of some concern at this site.
:•

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
Fishing Creek
.E
Approximate
Map
Recommended
Distance
Data
Data
Comments
Location
Location
Downstream
Collection
(miles)
Wireless
Telemetry
Highway 97/200
(DO) to Hydro
Water
Bridge
In Situ - Pipe and
Station
1
Temperature,
0.15
Instruments at
Computer,
Downstream
USGS Station
DO
Fishing Creek
02147310
USGS
Hydro
Satellite Link
to NWIS Web
Interface
.E

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
Device Location Rationale
A previous water quality monitoring site was located on the wingwall, west of the Fishing Creek
Powerhouse. That site adequately represented the water quality (temperature and DO) of the
turbine flow when all the hydro units were identical and prior to the recent installation of the
tailrace buttresses. However, this site would probably not be representative of the combined
flows from hydro units with differing aeration capability since the flows will be directed
downstream due to the newly installed buttresses. Therefore, the best site for a new monitor is
the Highway 97/200 Bridge immediately downstream of the turbines (Location 1). The bridge
not only provides an existing structure to place the water quality monitor in the channel, but this
site will represent the water quality conditions of any combination of hydro unit flows. This site is
accessible under all Project flows, and allows for a rapid response of the station to water quality
conditions. Security from vandals may be a concern at this site. A seasonally operated USGS
Water Quality Station (USGS 02147310 CATAWBA RIVER AT GREAT FALLS, SC) was
activated at this site in June, 2016.
91
Existing Device
Wired to
Reservoir
Fishing Creek
2
Levels
Forebay
N/A
on the Intake
Hydro Station
Structure
Computer
Device Location Rationale
A previous water quality monitoring site was located on the wingwall, west of the Fishing Creek
Powerhouse. That site adequately represented the water quality (temperature and DO) of the
turbine flow when all the hydro units were identical and prior to the recent installation of the
tailrace buttresses. However, this site would probably not be representative of the combined
flows from hydro units with differing aeration capability since the flows will be directed
downstream due to the newly installed buttresses. Therefore, the best site for a new monitor is
the Highway 97/200 Bridge immediately downstream of the turbines (Location 1). The bridge
not only provides an existing structure to place the water quality monitor in the channel, but this
site will represent the water quality conditions of any combination of hydro unit flows. This site is
accessible under all Project flows, and allows for a rapid response of the station to water quality
conditions. Security from vandals may be a concern at this site. A seasonally operated USGS
Water Quality Station (USGS 02147310 CATAWBA RIVER AT GREAT FALLS, SC) was
activated at this site in June, 2016.
91

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
Great Falls -Dearborn (Diversion Dam)
92

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
Great Falls -Dearborn (Headworks)
93

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
Great Falls -Dearborn (Main Dam)
Map
Location
Data
Recommended
Location
Approximate
Distance
Downstream
(miles)
Comments
Data
Collection
Optionally, Static
Bypassed
Diversion Dam
Optionally,
Notch Dimensions
Reaches
Notch(s) in
Used with Wired
Long Bypassed
Diversion Dam,
Pond Elevation or
Minimum
25 mi. from
Reach
or Gate Position
Staff Gage Visual;
1
Continuous
Fish
Fishing Creek
Sensor Used in
or Wireless
Flows
Downstream
Dam
Conjunction with
Telemetry of
Recreational
Fishing Creek
Pond Elevation to
Actuated Gate
Flows
H y
Hydro
Assure Flows
Position to Hydro
Station Computer
Bypassed
1.95 mi. from
Optionally,
Optionally, Static
2
Reaches
Headworks
Fishing Creek
Notch(s) in
Notch Dimensions
Short Bypassed
Dam
Headworks Dam,
Used with Wired
Minimum
or Gate Position
Pond Elevation or
94

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
Device Location Rationale
Ideally, measurement of the minimum continuous flows and recreational flows in the Great Falls
Long and Short Bypassed Reaches would be taken directly in the respective channels.
However, the irregular channel configuration in both reaches prevents accurate flow
measurements from stage changes. In addition, the difficult access to the bypassed reaches
poses substantial personnel safety limitations to the calibration and maintenance of the gages.
Therefore, the best measurement of the flow in the bypassed reaches is at the source of the
flows (Locations 1 and 2).
The facilitation and measurement of recreational flows into the bypassed reaches will either be
via a known relationship of stage and gate opening positions, or via the known relationship to
pond elevation relative to dam notch openings. Continuous flow monitoring for the Long
Bypass will be located at the Great Falls Diversion Dam immediately downstream of Fishing
Creek Hydro (Location 1). The continuous flow monitoring for the Short Bypassed Reach will be
provided at the Great Falls Headworks spillway, downstream of the headworks structure
(Location 2). Manually read, new USGS type plate staff gages will be placed at the Great Falls
Diversion Dam and upstream of the Great Falls Headworks (Locations 1 and 2).
A previous water quality monitor mounted on the Duke Energy bridge immediately downstream
of Great Falls and Dearborn Hydros is ideally located since it is in the center of the channel
(Location 3). This position captures the water quality (temperature and DO) from both hydros
and is in a secure location. A seasonally operated USGS Water Quality Station (021474095
95
Continuous
Reach
Sensor Used in
Staff Gage Visual;
Flows
Conjunction with
or Wireless
Downstream
Pond Elevation to
Telemetry of
Recreational
Fishing Creek
Assure Flows
Actuated Gate
Flows
Hydro
Position to Hydro
Station Computer
Wireless Telemetry
Water
In Situ - Pipe and
(DO) to Hydro
Duke Bridge
0.1 mi. from
Temperature,
Instruments at
Station Computer,
3
Downstream of
Great Falls —
USGS Station
USGS Satellite Link
DO
Hydros
Dearborn Dam
021474095
to NWIS Web
Interface
Existing Device
Reservoir
Great Falls
Wired to Hydro
4
N/A
on the Intake
Levels
Forebay
Station Computer
Structure
Device Location Rationale
Ideally, measurement of the minimum continuous flows and recreational flows in the Great Falls
Long and Short Bypassed Reaches would be taken directly in the respective channels.
However, the irregular channel configuration in both reaches prevents accurate flow
measurements from stage changes. In addition, the difficult access to the bypassed reaches
poses substantial personnel safety limitations to the calibration and maintenance of the gages.
Therefore, the best measurement of the flow in the bypassed reaches is at the source of the
flows (Locations 1 and 2).
The facilitation and measurement of recreational flows into the bypassed reaches will either be
via a known relationship of stage and gate opening positions, or via the known relationship to
pond elevation relative to dam notch openings. Continuous flow monitoring for the Long
Bypass will be located at the Great Falls Diversion Dam immediately downstream of Fishing
Creek Hydro (Location 1). The continuous flow monitoring for the Short Bypassed Reach will be
provided at the Great Falls Headworks spillway, downstream of the headworks structure
(Location 2). Manually read, new USGS type plate staff gages will be placed at the Great Falls
Diversion Dam and upstream of the Great Falls Headworks (Locations 1 and 2).
A previous water quality monitor mounted on the Duke Energy bridge immediately downstream
of Great Falls and Dearborn Hydros is ideally located since it is in the center of the channel
(Location 3). This position captures the water quality (temperature and DO) from both hydros
and is in a secure location. A seasonally operated USGS Water Quality Station (021474095
95

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
GREAT FALLS RESERVOIR TAILRACE AT GREAT FALLS, SC) was installed at this site in
March, 2016.

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
Rocky Creek -Cedar Creek
97
Approximate
Map
Recommended
Distance
Data
Comments
Data Collection
Location
Location
Downstream
(miles)
Water
Downstream
Planned USGS
Station with In Situ
Wired to Hydro
1
Temperature
Face of Cedar
0.00
- Pipe, Monitor
Station
Creek
Location
Computer
DO
Powerhouse
Unchanged
Current Device on
Wired to Hydro
Cedar Creek
2
Reservoir Levels
n/a
the Intake
Station
Forebay
Structure
Computer
97

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
Device Location Rationale
A previous water quality monitor was located in the center of the Cedar Creek tailrace, mounted
directly on the powerhouse. Since the hydro units at Cedar Creek were identical, the
temperature and DO monitor adequately measured the water quality released from Cedar Creek
Powerhouse (Location 1). Unlike Great Falls -Dearborn, there is no structure downstream of
Cedar Creek Powerhouse to mount a water quality monitor in the center of the channel.
The water quality of the Cedar Creek hydro flow represents the overall tailrace water quality
because:
• Cedar Creek Powerhouse flow is significantly greater than Rocky Creek Powerhouse
flow and dominates the downstream flow (capacity of Cedar Creek units is three times
the capacity of the Rocky Creek units).
• Rocky Creek Hydro is operated infrequently; it is operated only after Cedar Creek
Reservoir pond level cannot be maintained by Cedar Creek Hydro (three Units at Cedar
Creek).
• Both hydros draw water from the same forebay and the water quality is similar.
Thus, no water quality monitoring device is necessary at the Rocky Creek Hydro.

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
Wateree

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
Device Location Rationale
The USGS gage at Highway 1/601 (Location 2/3) is well-established and will be used for
verification of minimum continuous flow, recreational flows, and hourly Project flows.
Generation records will be used to supplement the USGS data.
The Wateree tailrace is a relatively simple channel, with the flows from the various hydro units
moving directly downstream. However, the tailrace does not lend itself to simple water quality
100
Approximate
Map
Recommended
Distance
Data
Comments
Data Collection
Location
Location
Downstream
(miles)
Wireless
Planned USGS
Telemetry (DO)
Water
West Shore
Station with In Situ
to Hydro Station
1
Temperature,
Platform —
0.02
- Pipe, Monitor
Computer,
DO
Tailrace
Location
USGS Satellite
Unchanged
Link to NWIS
Web Interface
USGS Station
02148000
USGS Gage and
Minimum
Highway 1/601
(Wateree River
Turbine
2
Continuous
7.4
Flows
USGS Gage
near Camden,
Generation
SC)
Records
USGS Station
Recreational
Turbine Records
02148000
USGS Gage and
Flows
(Wateree River
Turbine
3
Highway 1/601
7.4
Project Hourly
near Camden,
Generation
Flows
USGS Gage
SC)
Records
Current Device on
Wired to Hydro
Wateree
4
Reservoir Levels
n/a
the Intake
Station
Forebay
Structure
Computer
Device Location Rationale
The USGS gage at Highway 1/601 (Location 2/3) is well-established and will be used for
verification of minimum continuous flow, recreational flows, and hourly Project flows.
Generation records will be used to supplement the USGS data.
The Wateree tailrace is a relatively simple channel, with the flows from the various hydro units
moving directly downstream. However, the tailrace does not lend itself to simple water quality
100

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
monitoring due to the various aeration capabilities of the individual hydro units and subsequent
multi -unit flow patterns (Duke Power 2005a). Moving the monitor location downstream to
capture a multi -unit flow is not an option because, at flows greater than provided by 2-3 unit
operations, a significant volume of water flows out of the main channel to the east within a few
hundred yards of the powerhouse.
The existing monitor location (Location 1) was built to extend a short distance into the tailrace
with the goal of obtaining more representative water quality measurements than at the face of
the powerhouse. The existing monitor location is the best logistical location available to
measure water quality because no structure exists in the center of the channel, nor is the east
side of the channel a viable option because that area is heavily used by fisherman (creating
damage and security issues) and is prone to flooding and further potential damage or loss.
The next available location at the Highway 1/601 Bridge is less suitable because of its distance
from the powerhouse and the presence of aquatic plants and shoals between the powerhouse
and bridge that significantly influence the DO levels.
2.3 Water Quality Monitoring Implementation Plan and Schedule
Per the Comprehensive Relicensing Agreement (CRA), Appendix M, all water quality monitors
are to be installed within 12 months following FERC approval of the Project Flow and Water
Quality Implementation Plan (FWQIP; Table 3).
101

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
Table 3 Water Quality Monitoring Schedule
Task
Timeframe
Notes
At several locations, the installation of water quality
monitors will precede the installation of the equipment
12 months after FERC approves
modifications necessary to achieve compliance. In
Water Quality
the FWQIP (subject to approval
these cases, the monitors will assist Duke Energy in
Monitor
in NC and SC 401 Water
the implementation of interim measures per the
Installation
Quality Certification) per CRA,
FWQIP. However, these monitor results are not
Appendix M
suitable for compliance assessments until the
necessary equipment modifications have been
implemented (refer to CRA Section 13.2)
DO
Each year for the term of the license, per
Compliance
April 1 —November 30
WQMP/FWQIP
Monitoring
Water
Temperature
April 1- November 30
Each year for the term of the license, per
Compliance
WQMP/FWQIP
Monitoring
Annual Report
June 30
The annual report will reflect previous year's data;
Submitted
annual reports submitted for the term of the license
The Licensee's plans for water quality data collection methodologies, including requirements for
measuring instrumentation, calibrations and maintenance, validation, archival, reporting, and
data transmittal providing real-time input for hydro compliance operations are described in the
Quality Assurance Project Plans (QAPPs) filed with both the North Carolina Department of
Environmental Quality (NCDEQ) and South Carolina Department of Health and Environmental
Control (SCDHEC).
2.4 Reporting Requirements
Historic records indicate that DO concentrations have consistently exceeded state water quality
standards during the winter months. Therefore, compliance monitoring for water temperature
and DO will commence on 1 April and end on 30 November each year during the term of the
New License, unless additional monitoring is determined necessary by the state water quality
agency (e.g., for extended low DO periods, unusual meteorological periods). Flows and
reservoir levels will be recorded year-round.
102

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
USGS Provisional water quality data for each monitoring site will be maintained in real time on
the USGS NWIS Web Interface for as needed access by state water quality agency staffs.
After compliance monitoring is initiated per Section 2.3 above, during the term of the New
License, an annual report summarizing the previous water quality monitoring season will be filed
with the appropriate agencies by June 30 of the following year.
2 Provisional USGS data typically include the following disclaimer: Data are provisional and subject to revision until
they have been thoroughly reviewed and received final approval. Provisional data may be inaccurate due to
instrument malfunctions or physical changes at the measurement site. Subsequent review based on field inspections
and measurements may result in significant revisions to the data. Data users are cautioned to consider carefully the
provisional nature of the information before using it for decisions that concern personal or public safety or the conduct
of business that involves substantial monetary or operational consequences.
103

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
3.0 Supplemental Trout Habitat Monitoring
3.1 Monitoring
The Catawba River Bypassed Reach and Bridgewater minimum continuous flows have been
selected and evaluated to provide flows and water temperatures suitable for protection and
enhancement of mussels in the bypassed reach and the maintenance of a stocked trout fishery
downstream of Bridgewater Hydro. The volume of warmwater flows provided to the Catawba
River Bypassed Reach to maintain mussel habitat are balanced against the coldwater minimum
flow from the Linville Dam to maintain suitable temperatures for trout downstream of the
confluence of the Catawba River Bypassed Reach and the Linville River. During Project
relicensing, the flows and temperatures provided to each channel to achieve the desired, but
conflicting temperature requirements were analyzed by the CE -QUAL -W2 reservoir model and
the River Modeling System (RMS). The results of these computer models were evaluated by the
Aquatics/Terrestrial and Water Quality Resource Committees. Bypassed Reach and Linville
Dam minimum continuous flows stated in the CRA are the result of the recommendations from
the evaluations by the resource committees.
Due to the hydraulic complexity and trout supplemental management interests in this area,
supplemental monitoring will be used seasonally (1 April through 30 November) to support
future evaluations of whether trout management goals in the mainstem Catawba River continue
to be supported. Results of this monitoring may be used to determine if flow reductions need to
be made in the Catawba River Bypassed Reach.
Per CRA agreement, this supplemental trout habitat monitoring was to commence after the
Bridgewater Powerhouse had been replaced with either a new powerhouse or valve system and
compliance operations had begun. Also, the study was to continue through the next full North
Carolina Division of Water Resources (NCDWR) Catawba River Basinwide Assessment period,
but not beyond Year 2019. Due to the extended time between the CRA signing and New
License issuance, Duke Energy and the NCDWR have agreed that the study will be conducted
at least from 2016 to 2019 (four years), but may be extended to additional years if the initial four
sampled years are not sufficiently variable from either a meteorological or operational
perspective.
The general study outline for the supplemental trout habitat monitoring is provided below.
3.2 Sensor Locations
The temperature and level logger placement is designed to be able to record temperatures, flow
(level logger with stage -discharge relationship) from the inflows, and empirically determine the
temperatures at the appropriate downstream river reaches. An additional downstream
temperature and level logger and staff gage (not depicted on the map below) will be provided at
the Watermill Bridge (RM 271.7) in Glen Alpine, NC which is in the middle of the primary trout
habitat.
104

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
Bridgewater Supplemental Trout Habitat Monitoring
bSGS,Gage & WQ
P 1159 'm -
,;w ' �'" A4P r Monitor (Complkih'66)
Thmpe�rature `' ,. °"'�,, ✓ I)lloni pr 4
..1 If
� '4 -logger, Level `;*�- � t•A{�� � � ,�
k� raj u vl
Gage Std ' = L '� -' 2T+
i r r
r
I - ✓ \ X
_a1ve-Flow,
Monitor rF. TemperatU,
(Comp Ii ` Logge�,s
~'-femperature
14 Loggers .
2y . L' rs -
r S,
F
1 Level Logge
Staff Gage y
;A.
3.3 System Requirements
Level loggers (devices to record river stage from which a stage -discharge relationship may be
developed to calculate flow) and temperature loggers will be placed in the river and periodically
downloaded to obtain the respective data. Stage -discharge curves will be developed and
maintained for the level logger sites.
3.4 Reporting Requirements
Annual reports will be provided to the NCDEQ and North Carolina Wildlife Resources
Commission (NCWRC) annually by 30 April, the calendar year following monitoring seasons, for
the duration of the supplemental trout habitat monitoring study. Reports will detail the previous
monitoring season's temperatures and levels. Flow -weighted temperatures will be calculated
for the downstream sites.
105

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
4.0 Trend Monitoring of Water Quality Characteristics
4.1 Background
Dissolved oxygen deficits in the Project reservoirs have been shown to be related to organic
and nutrient (nitrogen and phosphorus) loading (Duke Power 2005b). Increased organic and
nutrient loadings to the system after the Licensee installs aeration equipment designed to meet
current deficits may impose additional oxygen deficits that the equipment was not designed to
treat. To provide information to assess basin -wide growth and potential increased organic and
nutrient loading, the Licensee will monitor trends in organic and nutrient concentrations to
supplement state water quality databases. This monitoring is not required for compliance with
the Section 401 Water Quality Certifications.
4.2 Sampling Locations
In cooperation with state agencies, the Licensee will identify sampling sites for future long-term
organic and nutrient sample collections. Parameters collected will include total N (calculated
from nitrate+nitrite and total Kjeldahl nitrogen), total P, pH, DO, and water temperature.
Hydro Tailraces
Samples will be collected monthly throughout the year from the immediate tailraces or
alternatively in the vicinity of the continuous water quality monitors.
Tributary Sites
Tributary sampling will focus on stream confluences draining major sub -watersheds into the
Project reservoirs and downstream river sections. Tributary samples will be collected monthly,
beginning in 2017.
The following tributaries will be monitored in North Carolina:
• Muddy Creek at Highway 70 (Burke Co.)
• Johns River at Highway 18 (Burke Co.) *
• Catawba River at Highway 18 (Burke Co.)
• Lower Little River upstream of Confluence with Catawba River (Alexander Co.)
• Catawba Creek at SR 2435 (Gaston Co.)
• South Fork Catawba River at Goat Island Park Pier, Cramerton (Gaston Co.)
(* Three storm events will be sampled each year. )3
The tributaries in South Carolina to be sampled will be chosen from the following list:
• Sugar Creek at Hwy 160 (York Co.)
3 Storm event sampling to occur within 72 hours of a tributary catchment precipitation event estimated meeting or
exceeding a minimal 1.27 cm (0.5 in) precipitation accumulation. One convenient -to -access source of precipitation
data currently available for this purpose is the NC CRONOS/ECONet Database, developed by the State Climate
Office of North Carolina (http://climate.ncsu.edu/cronos).
i 1:

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
• Catawba River at Highway 9 (Chester and Lancaster Co.)
• Fishing Creek at SSR 77 (Chester Co.)
• Cane Creek at SSR 50 (Lancaster Co.)
• Rocky Creek at USGS Gage (Chester Co.)
• Big Wateree Creek at Highway 21 (Fairfield Co.)
• Beaver Creek at SSR 13 (Kershaw Co.)
4.3 Sampling Requirements
The samples will be collected and analyzed by state certified personnel and laboratories.
4.4 Reporting Requirements
Data derived from the long-term monitoring program will be stored electronically and reports
provided as needed or requested by state agencies, such as to support the NCDWR's Catawba
River Basinwide Assessment.
107

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
5.0 References
Duke Power. 2005a. Catawba Hydros - Existing Aeration Capability and Downstream Aeration
Tests, Technical Report Series, Catawba-Wateree License. FERC No. 2232, Charlotte,
NC.
Duke Power. 2005b. CE -QUAL -W2 Calibration Reports, Technical Report Series, Catawba-
Wateree License. FERC No. 2232, Charlotte, NC.
Duke Energy 2015. Bridgewater Supplemental Trout Habitat Monitoring Study Plan. Duke
Energy Water Resources. Huntersville, NC.
[HDR] HDR Engineering, Inc. 2012. Bridgewater Hydroelectric Station Dissolved Oxygen
Report. Prepared for Duke Energy Carolinas, LLC. December 2012.
Knight, Jon, 2003. Dissolved Oxygen Concentrations and Water Temperature from Bridgewater
Hydroelectric Station. Duke Power Company.
Mitchell, Thomas O. 2006. Luminescence Based Measurement of Dissolved Oxygen in Natural
Waters. Hach Environmental. Loveland, CO.
United States Environmental Protection Agency. 2001. EPA Requirements for Quality
Assurance Project Plans. EPA QA/R-5, EPA/240/B-01/003. USEPA, Office of
Environmental Information, Washington D.C.
ic:

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
Identification and assessment of any incremental environmental impacts of the revision
compared to the original WQC
The USGS is a nationally -trusted resource whose expertise adds value in the form of personnel
experience and technical capability, organizational continuity and accountability, and all facets
of quality assurance and quality control in environmental monitoring. The USGS has the
resources to make provisional water quality data publicly available on the internet for all
monitoring locations on a real-time basis, and subsequently furnishing approved water quality
data which will be used in annual compliance reports. Duke Energy will also have access to real-
time water quality data via local telemetry, to be used throughout the monitoring season in
managing hydro operations to meet dissolved oxygen requirements.
Consultation Summa
Commenter
Summary of Comment
Duke Energy Response
NC Wildlife
The map location of the USGS gage
Duke Energy agrees the location of
Resources
and WQ monitor below the
the USGS gage as shown on the
Commission
Bridgewater Powerhouse are
Water Quality Management Plan
incorrect.
(WQMP) maps needs to be changed.
The gage is actually located on the
river between the Bridgewater
Powerhouse tailrace and the
Powerhouse Road bridge, just
upstream of where the bridge
crosses the river. We will revise the
maps and will also confirm
downstream distances and revise
them accordingly.
NC Wildlife
There is a discrepancy between
The USGS aerial photograph of the
Resources
Duke Energy's description of the
gage location is of the Bridgewater
Commission
USGS gage location below the
Fishing Area, which is indeed open
Bridgewater Powerhouse and the
to the public. The lat-long
location as shown by the USGS and
coordinates on the USGS aerial
a concern about the gage being in a
photo place the gage across the river
publicly -accessible area.
from the fishing area adjacent to
Powerhouse Road downstream of
the Powerhouse Road bridge.
However the gage is actually located
upstream of the bridge outside the
109

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
110
access area. While Duke Energy may
not be able to resolve all
discrepancies among these
references, we will confirm and
revise the site description in the
WQMP as necessary to be accurate.
NC Wildlife
It was suggested to add text
Duke Energy will provide additional
Resources
explaining how the minimum flow
explanation of how the gate at
Commission
release gate at the Oxford
Oxford will operate and provide
Powerhouse will operate and
continuous minimum flow.
provide continuous minimum flow.
The gate position will be adjustable
and set as required to deliver the
required minimum flow based on
target reservoir elevation and
expected reservoir elevation range.
110

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
CRA Appendix L: Flow and Water Quality Implementation Plan (FWQIP) (applies to NC and SC)
Statement of Revision
CRA Appendix L is the FWQIP and is included as a condition of both state WQCs.
Appendix E; Section A-2.0 Flow Articles; Article — Flow and Water Quality Implementation
Plan of the license issued by the FERC on November 25, 2015 requires:
(A) Within 180 days following the issuance of this license, the Licensee must file with the
Commission, for approval, a Flow and Water Quality Implementation Plan (FWQIP) for
completing the modifications necessary to satisfy the flow and water quality requirements
at Project developments. The Plan shall include, at a minimum: (i) descriptions of any
equipment, including flow release valves, minimum flow hydro units, or aerating hydro units
to be installed; (ii) descriptions of any proposed modifications to any Project structures to
provide prescribed flow releases or meet the requirements of the 401 Water Quality
Certifications; and (iii) a schedule for the installations and modifications to meet the
prescribed flow releases or water quality requirements stipulated in this license.
Background information explaining the need for the revision
One reason for the changes to FWQIP activities and schedules as originally included in both
state WQCs is current timelines for vendors to design, fabricate, and deliver major components,
such as the new minimum flow units at the Wylie and Wateree Developments, are different
than projected in 2006. Also, Duke Energy has already implemented major items such as flow
and water quality improvements at the Bridgewater Development (at both the Bridgewater
Hydro Station and the Catawba Dam), the Rhodhiss Development, and the Oxford
Development. More detailed design and scheduling for Great Falls minimum continuous flow
and recreation flow release modifications coupled with other improvements required by the
Ferderl Energy regulatory Commission have resulted in modifications to implementation
schedules at that development.
Actual text of the revision (for ease of identification, text modified from the December 22
2006, Signature Copy of the CRA, Revision 1 is shown in bold italics)
111

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
APPENDIX L: FLOW AND WATER QUALITY IMPLEMENTATION PLAN (FWQIP)
The Flow and Water Quality Implementation Plan (FWQIP) table that follows presents an outline of:
• A site-specific list of measures that the Licensee will take for providing aquatic flows, recreation flows and for meeting the
applicable water quality standards;
• A schedule for when these measures will be implemented; and
• A schedule for any interim measures that will be taken to address flow releases or dissolved oxygen (DO) improvements
prior to completing the necessary physical modifications to the Project.
Dates are subject to change due to items beyond the Licensee's control such as materials availability, manufacturing capacity,
transportation schedules and installation contractor availability. The Licensee will however make every reasonable effort in its
planning and implementation to minimize the chance of delays in this schedule.
112
Timeframe for
Operational Change to
Timeframe for
Implement Flows and/or
Completing Physical
Enhance DO where No
Physical Modifications
Modifications and
Interim Measures for Providing Aquatic
Physical Modifications
Proposed to Meet Flow
Implementing Flows
Flow and/or DO Enhancement until
Location
are Anticipated
and/or DO Requirements
and/or DO Enhancements
Physical Modifications are Complete
(Note 7)
(Note 8)
(Note 1)
(Notes 3, 7)
Bridgewater Development (Notes 2, 4, 6)
Catawba Dam
N/A
New flow valve with aerating
Completed 11118109
N/A
capability
Linville Dam
N/A
New Powerhouse with
New powerhouse
N/A
aerating capability on all
completed 11114111
units or flow valve
system (Note 2)
112

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
113
Timeframe for
Operational Change to
Timeframe for
Implement Flows and/or
Completing Physical
Enhance DO where No
Physical Modifications
Modifications and
Interim Measures for Providing Aquatic
Physical Modifications
Proposed to Meet Flow
Implementing Flows
Flow and/or DO Enhancement until
Location
are Anticipated
and/or DO Requirements
and/or DO Enhancements
Physical Modifications are Complete
(Note 7)
(Note 8)
(Note 1)
(Notes 3, 7)
Rhodhiss Development
Rhodhiss Dam &
N/A
New aerating runner on Unit
Completed 12103113
N/A
Powerhouse
3
Oxford Development
- Trash gate modification
to spill forebay surface
- 12 months following
Beginning within 60 days following the
water. The gate position
FERC approval of FWQIP
date of closure of the New License, raise
Oxford Dam
N/A
will be adjustable and
a flood gate during periods of no
set as required to deliver
generation to release and aerate the
the required minimum
Minimum Continuous Flow.
flow based on target
reservoir elevation and
expected reservoir
elevation range.
- New aerating runner on
- Completed 12/23/13
one existing unit (Unit 2)
113

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
114
Timeframe for
Operational Change to
Timeframe for
Implement Flows and/or
Completing Physical
Enhance DO where No
Physical Modifications
Modifications and
Interim Measures for Providing Aquatic
Physical Modifications
Proposed to Meet Flow
Implementing Flows
Flow and/or DO Enhancement until
Location
are Anticipated
and/or DO Requirements
and/or DO Enhancements
Physical Modifications are Complete
(Note 7)
(Note 8)
(Note 1)
(Notes 3, 7)
Lookout Shoals Development
Beginning within 60 days
following the date of closure
of the New License, operate
existing vacuum breakers
(three units) as needed
Lookout Shoals
to meet state standard
N/A
N/A
N/A
Powerhouse
s for DO while monitoring
Oxford DO
carry-over benefits. If
necessary, add aerating
capacity to auxiliary units.
Operate existing large or
auxiliary units as needed
to provide minimum flow.
Cowans Ford Development
Beginning within 60 days
following the date of closure
Cowans Ford
of the New License, operate
N/A
N/A
N/A
Powerhouse & Dam
existing units as needed.
No flow or DO
enhancements are needed.
114

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
115
Timeframe for
Operational Change to
Timeframe for
Implement Flows and/or
Completing Physical
Enhance DO where No
Physical Modifications
Modifications and
Interim Measures for Providing Aquatic
Physical Modifications
Proposed to Meet Flow
Implementing Flows
Flow and/or DO Enhancement until
Location
are Anticipated
and/or DO Requirements
and/or DO Enhancements
Physical Modifications are Complete
(Note 7)
(Note 8)
(Note 1)
(Notes 3, 7)
Mountain Island Development (Note 5)
Beginning within 60 days
following the date of closure
Mountain Island
of the New License, operate
Powerhouse & Dam
existing stay vane aeration
N/A
N/A
N/A
units as needed.
No flow or DO
enhancements are needed.
Wylie Development
Beginning within 60 days following the
date of closure of the New License, pulse
Replace one existing hydro
30 months following
an existing unit 1 hr on, 2 hrs off during
Wylie Powerhouse
N/A
unit with a smaller unit with
FERC approval of FWQ/P
periods when at least 1 unit is not running
aerating capability
continuously. When DO is below state
standards, operate two existing units with
hub -venting capability on a first -on, last -off
hierarchy whenever the station is being
operated for flow release, reservoir level
control or generation.
115

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
116
Timeframe for
Operational Change to
Timeframe for
Implement Flows and/or
Completing Physical
Enhance DO where No
Physical Modifications
Modifications and
Interim Measures for Providing Aquatic
Physical Modifications
Proposed to Meet Flow
Implementing Flows
Flow and/or DO Enhancement until
Location
are Anticipated
and/or DO Requirements
and/or DO Enhancements
Physical Modifications are Complete
(Note 7)
(Note 8)
(Note 1)
(Notes 3, 7)
Fishing Creek Development
Beginning within 60 days
following the date of closure
of the New License, operate
Fishing Creek
existing stay vanes (two
N/A
N/A
N/A
Powerhouse & Dam
units) and hub venting (one
unit) as needed to meet
state standards for DO.
Great Falls — Dearborn Development
Great Falls Diversion
N/A
Combination notches/gates
55 months following
None
Dam (Long Bypass)
and/ or bladder dam
FERC approval of FWQIP
In order to provide aquatic flow to
Great Falls Headworks
N/A
Combination existing trash
55 months following
the Short Bypass Duke Energy will
(Short Bypass)
gate and/or bladder dam
FERC approval of FWQIP
leave open the existing trash gate
continuously with the exception of
any time if and when it must be
closed for public safety,
operational emergency, to
perform design reconnaissance for
the permanent headworks
modifications, or to begin
constructing the permanent
modifications.
116

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
117
Timeframe for
Operational Change to
Timeframe for
Implement Flows and/or
Completing Physical
Enhance DO where No
Physical Modifications
Modifications and
Interim Measures for Providing Aquatic
Physical Modifications
Proposed to Meet Flow
Implementing Flows
Flow and/or DO Enhancement until
Location
are Anticipated
and/or DO Requirements
and/or DO Enhancements
Physical Modifications are Complete
(Note 7)
(Note 8)
(Note 1)
(Notes 3, 7)
Beginning within 60 days
following the date of closure
of the New License, operate
existing vacuum breakers
Dearborn Powerhouse
(three units) as needed to
N/A
N/A
N/A
meet state standard s for
DO while monitoring
Fishing Creek DO carry-
over benefits.
Rocky Creek — Cedar Creek Development
Beginning within 60 days
following the date of closure
of the New License, operate
existing hub venting
Cedar Creek
capability (three units) as
Powerhouse & Dam
needed to meet state
N/A
N/A
N/A
standards for DO while
monitoring the benefit of
continuous flows through
Great Falls Bypassed
Reaches.
117

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
Location
Timeframe for
Operational Change to
Implement Flows and/or
Enhance DO where No
Physical Modifications
are Anticipated
(Note 7)
Physical Modifications
Proposed to Meet Flow
and/or DO Requirements
(Note 8)
Timeframe for
Completing Physical
Modifications and
Implementing Flows
and/or DO Enhancements
(Note 1)
Interim Measures for Providing Aquatic
Flow and/or DO Enhancement until
Physical Modifications are Complete
(Notes 3, 7)
Wateree Development
Beginning within 60 days following the
Beginning within 60 days
date of closure of the New License,
following the date of closure
approximate minimum continuous flows
of the New License, operate
by (1) pulsing an existing unit 1 hr on, 2
existing hydro units
hrs off from May 16 thru Feb 14 during
as necessary to provide
Replace one existing hydro
periods when at least 1 unit is not running
Wateree Powerhouse
downstream flow
unit with a smaller unit with
42 months following
continuously and (2) running an existing
requirement. Also operate
aerating capability
FERC approval of FWQ/P
hydro unit continuously from Feb 15 thru
existing units with auto-
May 15. When DO is below state
venting capability as
standards, operate existing units with
needed to meet state
auto -venting capability on a first -on, last
standards for DO.
off hierarchy whenever the station is being
operated for flow release, reservoir level
control or generation.
118

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
Notes:
1. The FWQIP was filed with NCDWQ and SCDHEC during the 401 Water Quality Certification processes as the recommended flow and water quality
implementation plan. NCDWQ and SCDHEC took the recommended FWQIP under advisement and approved and/or modified the FWQIP in the 401
Water Quality Certification. The FERC must approve the FWQIP before the Licensee can begin construction at any location, except for Bridgewater (see
Note 2 below). Also, since the FERC approval order for the FWQIP can substantially modify the Licensee's proposed FWQIP, the Licensee will not
contract for the manufacture or installation of large capital cost items until FERC approval is obtained.
2. At Bridgewater, retirement of the existing powerhouse and its replacement with a new powerhouse was performed as part of the ongoing Bridgewater
Dam Upgrade Project, and FERC approval was obtained in conjunction with that project. The Licensee's final decision was to replace the original
powerhouse with a new powerhouse designed to provide the prescribed flows and meet the applicable state water quality standards.
3. The interim measures will be implemented as indicated except when the Licensee is operating under the Low Inflow Protocol (LIP) or the Maintenance
and Emergency Protocol (MEP).
4. Paddy Creek Bypassed Reach: No flow releases are proposed in the Paddy Creek Bypassed Reach. Parties to this Agreement agree to recommend the
provisions presented in Section 4.0 of this Agreement in lieu of flow releases into the Paddy Creek Bypassed Reach for consideration by the NCDWQ
and the FERC in the 401 Water Quality Certification process and the license issuance process, respectively.
5. Mountain Island Bypassed Reach: No flow releases are proposed in the Mountain Island Bypassed Reach. Parties to this Agreement agree to
recommend the provisions as presented in Section 4.0 of this Agreement in lieu of flow releases into the Mountain Island Bypassed Reach for
consideration by the NCDWQ and the FERC in the 401 Water Quality Certification process and the license issuance process, respectively.
6. The Licensee consulted with the resource agencies to reduce resource impacts during any periods of reduced flow associated with the Bridgewater
Dam Upgrade Project.
7. For the purpose of this Appendix L only, "date of closure for the New License" will mean the first day following the issuance of the New License and the
closure of all rehearing and administrative challenge periods related to water quantity, including Project flow releases and reservoir levels, and water
quality.
8. If a state water quality agency requires equipment modifications in addition to those listed in this Appendix L to assure compliance with applicable state
water quality standards for Dissolved Oxygen (DO), the fact that such modifications are not currently specified in this Appendix L does not render those
modifications inconsistent with this Agreement pursuant to Section 21.0. However, any equipment modifications necessary to assure compliance with
any other applicable state water quality standard or any other regulatory requirements to provide flow releases, and/or reservoir levels other than the flow
releases and reservoir levels specified in this Agreement may be inconsistent with this Agreement and may be subject to review pursuant to the
provisions of Section 21.0.
119

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
Identification and assessment of any incremental environmental impacts of the revision
compared to the original WQC
Overall, this revision to the FWQIP is an improvement to and not inconsistent with the previous
FWQIP given:
• Four of the nine modification projects (Catawba Dam, Bridgewater Powerhouse,
Rhodhiss turbine, Oxford turbine) have been completed years ahead of schedule.
• The originally proposed Oxford minimum flow release valve has been changed to a
trash gate modification to 1) release forebay surface water higher in dissolved oxygen,
2) spill that water to provide additional aeration, and 3) shorten the implementation
schedule.
• The original schedule for the Wylie Hydro Station unit replacement is unchanged.
• The Wateree Hydro Station unit replacement date has extended. The Wylie and
Wateree unit replacements are unique and complicated designs required to
significantly raise dissolved oxygen under reduced flow conditions while utilizing the
same intake structures and turbine outlet structures. There are considerable risks
associated with these unique designs. Therefore, rather than have simultaneous
installations that may duplicate unexpected problems, these implementations are
staggered to maximize lessons learned, correct any discovered design or
manufacturing deficiencies, and make more efficient use of installation crews.
• The schedule for the Great Falls Long Bypass modifications has extended. The original
concept was to use notches, gates or bladder dams to release both minimum
continuous and recreation flows. However, these options may not provide sufficient
control to regulate flow releases precisely enough to assure compliance. Instead,
additional design concepts are being developed, including possibly Obermeyer gates
which require pneumatic piping, compressors, and controls that greatly increase the
scope of this modification compared to the original concept.
• The Great Falls Short Bypass modification date has extended in order to integrate
the flow release provision (also including Obermeyer gates as described for the Long
Bypass) into an overall modification to make FERC -required dam stability
modifications and to replace the existing flashboards on top of a section of the short
bypass spillway with bladder dams. This approach will improve Duke Energy's ability to
comply with flow releases. In addition, public safety will be improved since the existing
flashboards are somewhat trouble -prone and can unpredictably break resulting in
difficulty managing flow releases, unsafe flow releases, and undesired debris in the Short
120

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
Bypass reach.
Consultation Summary
Commenter
NC Wildlife
Resources
Commission
(NCWRC)
SC Department of
Natural Resources
(SCDNR)
Summary of Comment
It was suggested to add text
explaining how the minimum flow
release gate at the Oxford
Powerhouse will operate and
provide continuous minimum flow.
There are no interim measures
identified in the CRA to provide
flows to the Long and Short
Bypasses. SCDNR also requests Duke
Energy strive to complete Great
Falls Long and Short Bypass
modifications ahead of schedule
and consider the development of an
interim measure that could be used
to provide some flow to the
bypasses in the meantime.
121
Duke Energy Response
Duke Energy will provide additional
explanation in both Appendix F
(WQMP) and Appendix L (FWQIP) of
how the gate at Oxford will operate
and provide continuous minimum
flow.
The gate position will be adjustable
and set as required to deliver the
required minimum flow based on
target reservoir elevation and
expected reservoir elevation range.
Duke Energy will revise the interim
measure for the Great Falls
Headworks (Short Bypass) to clarify
in order to provide aquatic flow to
the Short Bypass Duke Energy will
leave open the existing trash gate
continuously with the exception of
any time if and when it must be
closed for public safety, operational
emergency, to perform design
reconnaissance for the permanent
headworks modifications, or to
begin constructing the permanent
modifications.
Duke Energy will also pursue design
alternatives for the Long Bypass
modifications to save time while
providing reasonable assurance of
public safety, operational feasibility,
and regulatory compliance. Duke
Energy will consult with SCDNR by
02/28/17 to review design concepts,
schedule, and identify potential

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
122
additional interim measures if
needed based on the success of
shortening the Long Bypass
modification schedule.
122

Catawba-Wateree Hydroelectric Project
Federal Energy Regulatory Commission Project No. 2232
Application for Amendment of Water Quality Certification
South Carolina Certification DHEC 08-C-001 issued February 12, 2015
North Carolina Certification No. 3767 issued November 14, 2008
ATTACHMENT A
Consultation Documentation

Williams Jonathan
From:
Bruce, Ed <[e-mail]>
Sent
Thursday, June 23, 2016 3:05 PM
o:
uouareau, Chris j.; vvilliams, ionatRan
Cc:
Deaton, Shannon L.; Oakley, Mark
ZPUBjetl:
RE: Co- lr,Tlo- Prviacol ra,- inc Cutav;D.-wuicrec PVVjetT - ❑rurT Re;UVR Tv,
Chris,
i nanRs again Tnr revie.vi,—,6 the proposed re.isions to the LIP document.
Duke Energy and HDR have reviewed your comments as follows:
• rage zi, Bul let el.L — will tRe caRa R rhes eritieai elerat;on rMange with the instailation of the „e.. —..i.ter intake
for IfllcGowell County?
If a new intake is located on rake lames in the future, the intake would be required to be operational below the
Lake J3me3 Critical Elevation resulting from the new powerhouse Therefore, anew intake would not change the Critical
Elevation.
Page 5, bullet #17 — Details of the drought index are still not clear. In second sentence you should clarify that
the monthl„ numeric value is the average drought value of the basin. I say this because you should distinguish
Retween tRc rrivniRiy z;vcrz;ge Grla iiic s-rnamili rolling zivcrzirc_ (Glare impart.ntl r, this bullet eae,R't i3c5no
how the monthly average will be determined_ vvill it be a weighted average (e.g., by area) or a simple average
(part of basin is D1 and part is D2, so average is 1.5)? If a weighted average, how wilt you determine area under
each designation -- visual estimate from map or some other method? What would the average be for the maps
belowr
This section of the proposed modified LIP docomem ha> been revised fulTher to clarify the items you sated
above. The monthly average will be based on an area -weighted average. Although we do not state exactly how
this is aeterminen in ine Document, tRe area-weigAted average will De deierminee oy an Excel spreaasneet iooi
developed by HDR that imports GIS -based U.S. Drought Monitor data and maps overlayed by basin boundary
maps to calculate an exact area -weighted averagE.
Please let mz knew if you have any other questions.
Thanks, Ed.
Edward D. Bruce, P.E.
Duke Energy
526 S. Churvh St_. Mail COdc ECII 2Y
Charlotte, NC 28202
704-382-5239 (Office)
704-607-3734 (Cell)
Frim: Goodreau, Chris J.[mailto:chri}[e-mail]]
aoenx: i nursaay, June Oc, zu16 iii -:ca AM
To: BrNca, Ed: 'Williamu, Jonathan(Jcnathen.Williamz(�hdrinc.com)'
Cc: Denton, Shannun L,
Subject: RE: Low Inflow Protocol for the Catawba -Waterer Prujecr - Draft Revision for Review
10 1 or y3u

*** Exercise caution. I Nis is an txTE NAL -Umdil. DO NOT open
attachments or click links from unknown senders or unexpGotud
email. ***
Ed and Jonathan,
hoot) to see you Boin yesterday. i hanks for getting me the pdf documents to review.
I have only two comments.
i Page zi_ Gullet ��.L _ will the rake,ames critical elevation change with the installation of the new water intake
for McDowell County?
Page 5, bullet #17 — Details of the drought index are still not clear. In seca7itl sentence you 5Roula clarify that
the monthl„ numedr. vuiuc is tRe average [IrougRt value of the basin_ I say this because you should distinguish
Getween the monthly average and the 3 -month rolling average. More importantly, this bullet doesn't define
how the monthly average will be determined. Will it be a weighted averase (e.s.. G, or a simple average
ipart of basin is D1 aria part is Dz, so average is 1.5) r IT a weighted average_ how will you determine area under
eacR Designation —visual estimate from map or some other method? What would the averase be for the maps
below?
Ch65
Chris Goodreau
Hydropower & Special Projects Coordinator
Hauii&L ConservaVon D v s.vn
ME; Wildlife Resources Commission
nz;5 FisM P1aLuMery Road
(Clarion, IAC eui5e
oii:ce: 8ce-'n5c 43'ou ext. 223
mouiie: aea-6U -3y r r
cnris.aoutIreau(&ncwildlife.ora
1 oz or QU

ncwildlifu.uru
-I F - - �_ 9 Erlb
From: Bruce, Ed[Mail to:Ed.Brucegduke-energy.coml
Sent: Thursday, May 19, 2016 9:23 AM
i o: uouereau, Claris i. <cnris.gouareau(wncwilalife.ore>;'vvilliams, ionathan tionathan.vvilliamsLwhdrinc.com)'
<Jonathan.Williams(&hdrinc.com>
Subject: RE: Low Inflow Protocol for the Catawba-Wateree Project - Draft Revision for Review
From: Brats, Ed
zpenz: i uesday_ May si. c'uio c:zo PIS
10:
S.Ib;act: Low, inflow Protocol for tha Catawba-WatzraG Project - Draft Revision for Review
CW-DMAG:
Attached is a draft revised Cow Inflow Protocol (LIP) for formal review by members of the CW-DMAG. A PDF version
showing proposed revisions and a PDF with the proposed revisions incorporated are included.
As background, the draft revised LIP results from efforts to modify the Comprehensive Relicensing Agreement (CRA) that
is part of the New License Duke Energy received in November 2015 and also to accommodate some recommendations
for LIP revisions in the Water Supply Master Plan 1W5MP —developed by the Cata7.5a-vvateree vUatar Managr_.,,eni
Group). i Here are aiso some administrative ana data -related updates in the draft document.
The following is a more detailed summa. y of the proposed revisions to the LIP:
Revisions resulting from efforts to revise the CRA:
Reducing the recreational flow release from the Wylie Development from 6,000 cfs to 3,000 cfs
Revisions resulting from w.-jMP recommenaadons:
• Calculating the 0.>. Drought Monitor trigger based on average conditions instead of worst conditions within the
Catawba-Wateree River Basin
Accommodate the ability to change LIP stages twice per month instead of once per month
Require the Licensee to make operational changes (e.g., downstream flow reductions) in response to an LIP Stage
change wiinin on. aq
• Raising the i arget Elevations at CaKe lames, CaRe Morman anti Cage vvylie My U..) feet from IGlay.L through October i
once a dam modification is completed at Lake Wateree (pending approval by CRA parries)
Re-;,siVRs ru.aldmg TFvm oarministrath;a or aaig-ralgra U pates:
• Formally agoing the ICational Marine Fisheries service (MGI>F} anC the risn and vvilGlife zervice (u�Fvv�) as Cvv-
DMAG members (New License requirement)
Updating references to Critical Reservoir Elevations at Lake James (resulting from new powerhouse) and Mountain
Island Lake (resulting from Riverbend Steam Station retirement)
• Updating Target Storage Index (TSI) figures resulting from lower Critical Elevations and higher i arget Elevations
(penaing approval ay EwA parries)
• Updating the Groundwater Recovery section of the Clr to accommodate the data collection of the ten installed
groundwater gages and eventual procedure for using the data
Other minor wording and reference updates
1 ua or 43v

The CW-DMHt, appointed Gm ud-Five carmmittee mase up or representatives from MCCEQ,.jCDMR, )CEIRIC, 15ZGZ and
t ie Eicensee at the annual meeting in Mlay iU-L5 Lo review and recommend how Lo incorporate the additional
groundwater gages referenced above. After the New License was issued, the role of the ad-hoc committee z.
expanded to review the propose?] , ezision, oetlirled above. AS sucR, Cw-I)MIAG memQers from tie City of Lenoir.
Charlotte water anti tMe City of Rock Mill were added Lo help with Che review process.
Please provide any comments to me in writi% 6y r..awy. ju..v L4 cpl6 pertaining to Ae proposed revisions. Comments
can de emahed or maned to my address below. Please note LhaL we will also discuss these proposed revisions aL our
annual CW-DMAG meeting.
jr you nave any questions, please let me Rnow-
Ed
Edward D. Bruce, P.E.
Duka En'rgy
526 S. Church St., Mail Code ECizy
Charlotte, NC 28202
704-382-5239 (Office)
704-607-3734 (Cell)
ly- ,.il carreaporsden�c w and from thm =emdm ie 3objeel 10 th. N C. Pobll"e Rcee.a3 Low -md mar by dmcly. ed iv thad part ez
1 v4 of 4;Z

williamz, 7vnatRan
From: Bruce, Ed <Ed.BrucetPduke-energy.com>
Sent: Thursday, June 30, 2016 4:04 PM
10: 1 mm --..s Mir -Coy
Cc: Oakley, Mark; Williams, Jonathan; Baker, Audri P.
Sub;ect: RE: Low Inflow Protocol for the Catay.ba-Wateree Project - Final Recision for Consensus
Agreement
roilew Op Fl..g: Flo -y r.F Tcliv ap
Flag Stratus: Completed
Tom,
i5ood catch.
When Mark Oakley files this document with the Water Quality Certification Agencies, we will make that typoe,rarhical
correction.
EdwarO 0_ Bruce, P.l=.
Duke Energy
526 S. Church St., Mail Code EC eY
Charloue, NC cascGc
70,4-Sac-5e3t (Office)
r0-'o0r-3ra�+ (Cells
From: l Momas McCoy [mailto:Thomas_McCoy i pfws.govJ
Sent: Thur3day, ]one 30, 2016 3:59 PM
To: Bruce, Ed
*ubjeLT: RE: Eow inflow Protocol for the Catawba-vvatelee ProjeM - final Revision for Consensus Agreement.
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From: Bruce, Ed [mailtc:Ed.Bruce ct duke-eneray.coml
Sent: Thursday, ]urge 3v, 2016 3:5i PM
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v t or 430

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Subject: Low Inflow Protocol for the Catawba-Wateree Project - Final Revision for Consensus Agreement
r?
CW-DMAG:
77
Httacne0 is the final version of line revises low Inflow Protocol (EIP) ror consensus agreement by members of the Cvv-
0MA73.?? A PDF version showing rhe revisions and a PDF with she revisions incorporated are included.??
H, 6.cRgroun0, a proposeM initial Oram revise0 ❑P was sent to TMe Cvv-E)MAIS on May 1/, ZOlii for formal review.? r
Corn men rs were requested by June c4, zU.L6.?? The inidaI draft revised LIP included revisions resuIdrig from??
77
77
errol'[s to ra.ise ine Cormprenem.i a Reiiccnsing Hg.eerna,-,t il:RA)
incorporating certain recommendations related to the LIP from the Water Supply Master Plan (WSMP) developed by
the Catawba-Wateree Water Management Group
?r
administrative or data -related updates
77
Re propose0 revisions were iRorougnry reviewed at tRe annual %vv-13MA5 meeting on June L, LOs& r? in addirion_
some additional comments were received on the initial draft revised LIP, of which some required a review at the annual
CW-DMAG meeting.?? The final version also includes some additional formatting, administrative and grammatical
upOates to mage line Document more up-to-Ome.
77
For CW-DMAG members, please let me know by July 14, 2016 if your organization does not agree with the final version
77
hanks_ Ed.
??
EOwarla D. Brute, P.E.
Duke Energy
526 S. Church SL., Mail Code EC12Y
Charlotte, NC 28202
704-382-5239 (Office)
704-607-3734 (CCII)
rr
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Comment [CGlj: Th. 6ustisn of the USGS
gage -no ;-,,d monitor Litems 2 and 3 on
the crap) a_ incorrect. They should be
shown at the first bridge crossing bolo-
the pa+rerh.use•
.,Iso the distance downstream tin the
tabl. below) shvald b- e.,,, nar lug uons
2 and 3"
71
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Comment [CGlj: Th. 6ustisn of the USGS
gage -no ;-,,d monitor Litems 2 and 3 on
the crap) a_ incorrect. They should be
shown at the first bridge crossing bolo-
the pa+rerh.use•
.,Iso the distance downstream tin the
tabl. below) shvald b- e.,,, nar lug uons
2 and 3"

usr s 02139520 t:ATAWBA R AT SR_— NZ ae...ne RR On;--EN-7-.k „c
aurae en0nty — cz v ra
"Mrob0le Un f ease 0a07ar V i
W= mngl0m ei°a0'w+3 nwe3
era6epe °..o r�o-:a: soao..ns
-ape aaana :,0W : 1— 9997. n..4p99
Device Location Rationale
I fie rimy -;tet .aloe at the Catawba Dam is designer; to supply seasonal minimum contirlavou
Approakiman
Map
L°ca.Ion
Data
RecorR-.nded
Location
Diatanve
Downstream
Comments
Dasa Collection
jm€lest
-ireiess
Bypassed
Flow sensor at
. I.rriwry:°
1
Re -cm Minimum
Catawba Dont
n/a
Flow Rala„sa
Hydra St.,livm
Fle-�
Wil -m
C—petep and
Staff Gage for
visual
Minimum
Conlin -as
ti aaS Satehite
Fle,rt-
Downstream of
UnR to NWIS'
2
Recreall.nal
Powerhouse,
0,1of
USGSStati.n
WebI.Jarf-ve
Flows
WaY BanR .,f
02138520
and Turbine
Proiote Ruuny
Un:iEly Ri:or
Generation
Fla-�
Ro..°ros
Wirelo,s
Wo;ar
De— lra — v!
!„ &i. - Kpo and
TvIamotry (DO)
3
TDO pe, .terb,
Powerhouse
° '`"
I..strernanl., o;
t. Hydm Stafien
Computer,
West Bank o[
USG Stetien
Linville River
02138520
USGS Satellite
UA to RVFlS
Web Intuffi.
Bridgewater
a°rmd Device on
Wired to Hyuro
4
Reservo€rLe.elo
For.eay
n!a
•haln;ako
Station
Stmatzfo
Compmar
Device Location Rationale
I fie rimy -;tet .aloe at the Catawba Dam is designer; to supply seasonal minimum contirlavou

flows in the Cataw0a River Igypassetl hieQeh ([yootiom 1). A sensor, calibrated for flow,
provides a continuous reaCing of the flow Oei..y Pal --mea imla the Catawba River Bypasses;
Reach. Since the sensor is locatetl on the Uam, it shvaii3 6y zyoery r.v,,. sandals.
I lie chom..at -umrigm ati. ri at USGS Gaye 0213F)bzu, ►.n t nvv ISm R mi 5R I Lea 91 CIC JHIGIEb
tvR BRID13EVVA i ER, IGC, I.,valed 0.195 mile below the Bridgewater Powerhouse, is illeall,
suitet] for the a--Pear11M ramye of tlt7-.-.3 originating from the Linville Dam (location e &;3). The
site Is locain on private Prapony FF iaky a measure of security_
m previous water quality monitoring uaa Iocated om the downstream side of the Bonner
Bridgewa[er Powerhouse. Given the pp --,amt comdgar.tio,. or the new Bridgewater Powerhouse:
a decision was ma'ue to place the water quality my .itvrimy inatremvnt at the existing USGS flow
gage station. mdtlitional 'uownstream continuous DO memitarimy voAcuted in 2012 for aeraiion
characteristics of the new l5dagewaier Powerhouse gvmoratiFiy emits aamonstrated that at the
v7zisting USGS gage site, DO conceniradons were vinually iaemrioal to tflv.y measured
eiV..nitaneously at the previously propose'u (WOMIP version 0) site, -hlalt —z IvaatA UX5 miles
rerffFiar dl wnstream at the Powerhouse Roa'u Bridge (RI3R z'u i e). 1 he zelculud DSGS yaye site
M--- 1 =vri shown to represent the water -quality conuitions of any coml5in-tiei at hyary t1, -.;t Ilv7.
(imala5..y mimim—m flow). In addition, the site is accessil3le untler all Project Tl.--, amll -,11
taciliraty a rapid re.pon.e at the station to water quality conuitions. i nis gage site, erisin-lly
insiatlM .m Dc..mn.r 2OUB, was upgraded by the USGS in august zu 15 to accommotlale
seasonally op.. —x.0 tater waality instrumentation. Security from vanllals is a minor concern ai
this site.. nesiae= =w-zo i -I ovmpliam.e monitoring for generation Clow 00, water temperature
will ae monitoret3 season -t1, -t thin erste to zipparl state trout management initiatives on the
Gownsiream seciion or the river.
Mationat vvater Inrormation system: Web IRWITaca aparetcd by the USGS.
eom,�.tatc Ice1,: Not sure what you
mn-pi; thim ==te I,. -Ida ape.. Bo the pobllc.
The USGS gape Is shown as ■■■eMtp
Imm.dta«ly 1;0ow elle bridge at the
flshi v pier. See --.men aptom from
USGS. So, either USGS Information Is
i.-..eerree:, er yoe ore deacnlirtg a different
site altogeth■r.

V„ f-13 (Cakc HIGROI-7)
Map$
Location
fi commended
Loeatisn
Apr—A—te
Distance
Downs,—o,,,,,
{tilos)
CgT_o_N
pow wAocrion
dinned USGS
Station with 6. S,..,
V's less
Hlgh= 113
- Plpw end
Telemetry {4d)
Wotsr
Bridge
Instruments
to FlMro St.lion
1
Temperature,
o—a aam a1
0.15
Mven,oa an
computer,
Co
O
Oxford Hydra
Bridge, Soeth
USGS Sotellim
Channel
Unk to NWIS
,neCtr approval
Web Interface
regeired)

2
Minimum
C—Nnaoas
Flo-
ox.ord dam
Wit
Modified Trash
Gwb momhorea
via R■..woir
Elevation and
G.i. Pos,a..n
rrireo to Hyuro
Station
Come w
Wireless
Telemetry to
Hydro Sia,k)n
no<rearlonal
HigB ay ;a
CwMirete.,
Flo-
Protect Howl?
Srkige
Downstream of
015
USGS-Level
andlor USGS
S.7.Aito einli to
POWs
V­1`0Ry.ro,
eloniior
NWIS Web
Terbi.-,a R.rda
Interface (Level;.
.no amine
Gcner..tion
Records
Cement De.iea an
WL -d 1. Hyd..
A
R.-rrei. La:ats
oxford Forab.y
rV.-
the Intake
Station
SFmctare
'computer
Device Location Fl-tian..lc
An misting trash -yaie will be mouit leu to spill well -aerates reseririF ncor-.erfface ..ester in order to Nroviue a
constant MAIrnertt comtinoces flow in the downstream channel (Cocauon z). C rle gate -ill pro7iaa the
minimum continuous ria- 8ur1n8 pe: Edo of ,.o hydro unit generation.
Reservoir level will ne monftoretf during tra,h g.le .pill. -Vo to assure compliance with ■na minimum
v. mtimuous flow. Generation anu recreational flow requirements :ill Be raoo,dea f. om the generation
roaarOu for a.vFi turbine. A manually real,, 03G3 -type plate Starr gage :ai Ge pl-eea at [fie Boat put -in at
RiveMent] ParR ([aaatlon s) for imaep.ndent verification.
A f... ioea water quality monitoring site was locaietl In rhe corner wf the Cxrerd vo—erhouse and wingwail,
I Rat site A. ,e_taly ra,,ra.e,.ted the water quality or the turulne flow when all the nyd.-o enitz -are identical,
anii prior to Ina Installation of in. tailrace Battrasses. However, this site now Is not representative of the
combine', flows from hyOro units with ainariny--r-ticm o.pabllity and the buttresses woulu effectively prevent
Unit 2 water from reaching u a sensor when unit f is genar.timg. I Rotators, a decision was mane to move the
monite, tc ma Righray 16 Bridge immealately uownstream or me turGlnes ([aaatinn i), I Fla Bridge not only
provides an existing : i. ectera tv,,laaa the water quality monlior in the cRannel, But this site —.LII ruprccent the
water quaiify conditions of any com6irlotion of Ftyaro omit flows, This site will Ge accessiDie unifier all Project
flows, and will proviCe a raplu response of the statlen res -ate. gewl;ty conditions_ Security tram vandals may
Do u co -norm at this site, and adverse effects on equipment due to oce-ul.r,.l Fujii tail.�ater water levels Is a
posslDillty.
Corn...r t tcG..]: -` Is nor ouar nun this
approach will ensure that 150 cfs to
presided vier a renga o. I.It! Isms. Witt
the trash gate be callbmted7 A■t■rnatcd7
1 suggest adding __—a text m plvieing i
how .—,a gate will operate and provide
continuo■_ r�hlrrr_rw fie-.

J.0 sepFlemvntat TFvt—ft R.Bitat Monitoring
3.1 MonRorin9
I tie Cataw0a riiver Bypasses Rcaefi unu 6.09w --ter minimum continuous flows (lave Been selected and
evaluated to provide Mows ant, wafer temperaterea =911-51t: Tor proteotium and enhanceman4 of mussels In
the bypassed reach and tfie maintenance of a stocRed trout tisRery do-n..t. a-rn cT B, i8y-o-ester Rydra. The
-elemo of ----rrmT..t.F flows provided to the Catawaa River Sypassed Reacts to maintain mussel R..Bitat rc
Balanced against Me col+9 :otcr minirmom flov, from the Linville Dam to maintain suirallie temperatures Tor
trout downstream OF the confluence oT me Riscr Byp.Sacd Reach and the Linville River. During
Project relicensing, rile flows and temperatures provided 6 —rl efionnol to acnicvc the desired, but
aontiicting temperature requirementb were anatyce'u By me CE-t1uAL-vvz reservoir mM.1 amil trio Ri.cr
Pleaellns bystcm (RIV16). The .esults of ,hese computer motels were evaluated By Me AquaTiwre.-reclriol
and vvater tsuality Fie...cerec Commitice.-.. Byp..eea Reach and Linville Dam minimum continuous flows
stated in isle ZRR are tale result or me recomm�naat:enu from the ry .It3 .tio„s by the resource committees
Due to the rt,dr.al compleJty aria l"t supplemental management Interest, In ills area, supplemental
monitoring will Ile used seasonall, (1 Apr;l tFirbeyn 30 November) to support future evaluations of wReifier
,rout management goais In the mainstem Catawda Ri:ercorftineo to Be sapporica. Results of this
mo„itoriny may be used to uetermine it rtow reductions need to Be made In trio Riper Bypc9a00
Rcaefi.
Per CRA agreement, iRis supplemental trout What monitoring -- to commence atter the Br;dggewater
PQ-crhoozc Had been replaced witR eltRer a new powerRouse or valve system and camplionea or,crationa
Rad de9en. Alan, the z;m6y wuz; to continue through the next Lull Morin Carolina Division of vvater Flesout�ez
(Mi%Vvvrt) Catawaa RIGe, period, but not beyond Year 0 t 5. Due to ine extended
time Between As CRm signing and Mew Elcense izza-rte., Dexo Encrgy and the NCDWR have agreed u tat
the study will be conGucteu at least , rom z0 13 to zu t a (four years), Bet m-, no t:;;tcnaea to odditivnal Years
It tfic Aiti-1 Tour 3amplcd years are not sufficiently varlaule from ehRer a meteorological or oper-banal
perspective.
i no ga..erol study outline for the supptemenLai trout Raaitat monitoring is pro-. Met] Bala:.
3.z sensor Locations
The temperature anu level logger placement is resigned to ue .06 to rccorca remperotores, flow (level
1%9cr with stage -discharge reiationsnlp, ,rom tRe Inflows, ana empirically detcr..,in, tfio t -m .cratara at the
appropriate ao :nArc.m rimae, reaches. An additional downstream temperature and level logger and st..n
gage (not depicted on tRe map 15.10-) ::fi 6. provided at the Watermill Bridye tr,101 « i, t f In Glen Hipine,
Iw wnicR is In ute middle OF tRe primary irwet 11..15hat.

Bdagc —twr SePpleme,dal Trout Habitat Monitoring .%V{°� �a S
� A - �� p _.�A ,F1 ✓4 ..
r(esetrL
tinejrat�r� r .�., dtit';""1!'us uag vi
..� � 1 owtle e_evel °.--�. • .� ��' tnonRor'l'� nil
' 15taf 'Gage :
W
3.3 Sy -tem Requirements
Ca,el lvgy.r. (devices to record river stage prom wMIcM a stage-alscllarge rel-tie.-Jilp m..r De aevolopCa to
calculate tle-) -mU tvmparRlCr-- loggers will be placed In the river anu perloOically aownloatlet] to oDraiR tR.
respective Oata. stage-Oiscnarg. on,Be aea:loy.ad and maintained for rile level logger sites.
3.4 mapvr-f.Rg Ra Fairements
Annual repefM .ill 6t: provided to the NCDE4 and NORM Carolina vvllaliie Resources CommissloR
�ICivv RC) annually Oy 3O Apra, IPIe a-6Raar reg., Collo--tiny monitoring seasons, for ane duration of d1e
supplemental trout Mailltat monitoring siu'ay. FleporM -ili 8eteil the pra.iooa monitorinu season's
I.mparatures and levels. Flow-welgriteO temperatures will Oe caleelott:a to, Tic aaM.. -treom sites,
Co :mens [eo ]: „ame wmment as
above re: location of uSGs *_V_.

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South Carolina Department of
Natural Resources
1000 ASsemDly 5Lreer
PO Box 167
Columbia, SC 29202
80a- i :�q-W0 is
o.
August 25, 2016
Submitie0 B, Electronic Mail
Mr. Mark Oakley
Duke Energy Corporation
526 South Church Street
r.0 12Y/P.O. Box 1006
Charlotte. NC 28/-0 i - 1005
Alvin A. Taylor
Director
RoMert 0. Per,
Director, 'vmce or
Environmental Programs
Subject: Comments on Draft Application for Amendment of Water Quality Certiii,ation for
Catawba-Wateree rty0ro rro�ect: South Carolina Certification DHEC 08-C-001 issued
February I2, 2015; Notth Carolina Certification ivo. 3767 issued November 14, 2008
Dear Mr. Oakley:
On July 15, 20 16, nuke zm�re, Carolinas, LLC, (Duke Energy) submitted a draft Application
for Amendment of the Water Quality Certification �wyC) issued for the Catawba-Wateree
rty«aroclectric Project to the South Carolina Department of Natural Resources (SCDNR) for
review. An amendment of the w yC is necessary because of changes described below. These
changes affect certain appendices of the Catawba-Wateree Comrrehensive Relicensing
Agreement iCRA) dated December 22, 2006 which are also incorporated by reference -s
conditions of the original WQCs.
Parties to the CmA nave determined that regional drought resiliency can be improved by raisi..,
reservoir summer target elevations on Lakes .tames, Norman, and Wylie by an additional six
incn�s from May through October. CRA parties have also decided to enhan.e Fublic safety by
lowering the recreation flow release to the Catawba River below Lake Wylie.
Duke rnerby voluntaril, initiated revisions to update the Low Inflow Protocol �Ltr) and the
Maintenance and Emergency rrotocol (MEP) in accordance with the CRA based on experience
rained during voluntary implementation of these protocols since 2006.
The license issued for the Catawba-Wateree ri,droelectric Prject on November 25, 2015
requires Duke Energy to file both a Water Quality Monitoring Plan (wVMP) and a Flow and
Water Quality Implementation Plan (FWq[P). In the interim, since these CRA provisions were
developed in 2006, the status and implementation schedule for these requirements have changed.

Mr. lvl.., K O..Ktcy
Comments on Draft Application for Amendment of Water Quality Certification for 7'atawoa-wateree
Hydroelectric Project
August 25, 20 16
SCDNR appreciates the oppoItunity to review the draft Application to amen the wt1C. In our
review of this information, we evaluate the consistency of the proposed changes with the South
Carolina Water Plan and the effectiveness of cnan.,es to address our interests in protecting or
enhancing a balanced, indigenous aquatic community and the associated riparian habitats.
Background
In 2006, Duke Energy applied for - ii.cnse from the Federal Energy Regulatory Commission
(FERC) to operate the Catawba-Wateree Hydroelectric Project tru.nC rrojeet No. 2232). The
license avpiication referenced a Comprehensive Relicensing Agreement (CRA)_ which describes
the proposed protection_ mitigation and enhancement measures. The CRA identified a number of
measures that were subsequently proposed for inclusion in the 401 water quality certificate.
Since 2006, when Duke Energy submitted the FERC application fo.- a ne.. license, they have
voluntarily implemented many of the measures of the CRA. During the seven years that these
measures have been implemented, aoutn Carolina exl erienced some of the driest weather ever
recorded, with moderate drought observed in the Catawba-Wateree basin in L007, 2009, 2011
anu c0 t L; and severe dr;,urht observed from September in 2007 through October 2008. In
addition to these periods of low inflow, high innows sufficient to crest the Lake Wateree Dam
occurred in 2013 and 2015. Since many of the water management measures of the r -MA weer
developed through moaclinr:, a Feriud of record prior to 2006, the variability associated with
these more recent high and low inflow periods has proviaen ..n oYYortunity to evaluate their
effectiveness and develop recommendations for improvement.
Also, since 2006, the Final Agreement Committee (FAC) and the Catawo.-Wateree Water
ivtana.cmicnt Grout (CWWMG) have been meeting on a regular basis to discuss the progress
and results of the CRA measures implemented. Five issues were identified for modification,
which include:
1. Reduce 6.000 cfs of recreational flow release at wylie Hydro Station to 3,000 cfs.
2. Repurpose funding for East Wateree access area.
3. Add funding options foe UFrer Wy lie motorboat launch improvements.
4. Provide flexibility to evaluate alternate technology for flood mana.ement at Lake
Wateree.
5. Add six inches of storage to summer tarset elevations for Lakes James, Norman, and
Wylie.
These changes to the CRA were approved by the Farties to the agreement in July, 2016. Twv of
the measures mentioned above, numbers 1 and 5_ will need modification to the tvyC to oeeome
effective.
In 2015, Suuth Carolina Department of Health and Environmental Control (SCDHEC) issued a
WQC (DHEC 08-C-00 t) to uuRe Enerr,y. While the WQC did not incorporate all of the
measures provided in the CRA. it did adopt the following:
PA

ivir. ivtarK O..Ktvy
Comments on Draft Application for Amendment of Water Quality Cenificadon io. C_1..n.-wutvree
Hydroelectric Project
August 25, 2016
Section 2.0 Reservoir Elevation Agreements (excluding subsectio.,1.2)
Section i.0 K«reational Flows (excluding subsection 3.3)
Section 4.0 Habitat Flow Agreements �incmded only section 4.1)
Section 6.0 Low inflow Protocol Agreement (excluding subsection 5.5)
Section 7.0 Maintena,.ce -nd Emersency Protocol Agreements
Section 11.0 Species Protection Plans (includes only ,absection 11.1)
Section 13.0 Water duality Agreements
Section 15.0 Gauging and ivionitorinr, Agreements (sections 15.I - 15.5 only)
Appendix A-1.0 Reservoir Elevation Articles
Appendix a-/-.0 Flow Articles
Appendix A-3.0 Low Inflow Protocol �Ltr) Article
Appendix A-4.0 Maintenance and Emergence Protocol (MEP) article
Appendix A-5.0 water quality Article
Appendix A-6.0 Gaging and Monitoring articles
at.,cndix C: Low Inflow Protocol
Appendix D: Maintenance and rmereency Protocol
Appendix F: Water Quality Monitoring Plan (WQMP)
Appendix L: rlo.. and Water duality Implementation Plan (FWQIP)
In November, 2015, FERC issued anew license for the Catawba- w ateree rrojcct. Many of the
Articles included in the license require cooperative planning, documented consultation with the
agencies, and FERC approval prior to implementation. The new license required Duke Energy to
file doth a WdMP implementation plan and a FWQIP implementation plan within 1,50 uays
(May 23.2016). In april,10t8, rERC concurred with a request by Duke Energy for additional
time to file the FWQIP and WQMP implementation plans.
On July 15, 2016 Duke Energy submitted - draft Application for Amendment of the WQC to
state and federal resource agencies for review and comments. i he ttran AYrlicatizn describes all
changes proposed in inc WdC. Any consultation comments received will be summarized and
included in Attachment A of the draft Application; :.hick Duke Energy will submit to SCDHEC.
SCDNR Comments
Appy.-.dix A-1.0 Reservoir Elevation Articles; Reservoir Elevations -- Duke rnergy is
requesting the normal target elevations oo raised on lakes James and Norman, in Notth Carolina,
and Lake Wylie in Notth and South Carolina. This recommendation .was developed as part of
the Catawba-wat.ree Water Management Group (CWWMG) Water Supply Master Plan
(WSMP) published in 2014- which was infiucnced by the record low inflows observed since
2006. The intent of the change is to increase useable storage available to an water users. In the
CRA; stakeholders develot,ed a normal target level elevation for Lake Wylie of 97 feet (566.ZF ft
mean sea level (MSL)) year around. In the draft aprlication, Duke Energy is proposing to raise
the t.rset level from 97 feet to 97.5 feet during the months of May -October. one concern
expressed regarding this change was the likelihood that downstream flooding evenw would be
increased, particularly at Lake Wateree. Modeling conducted by Duke Energy indicates there
3

Mr. Mark Oakley
Comments on Draft Application for amendment of water yaNi;r, LCrrrtoation for Catawba-Wateree
Hydroelectric Project
august /-x,10 10
wilt oc no significant increase in the risk of flooding events as a result of increasing the summer
lake levels. Also, this change will not take effect until the Lake Wateree dam has been modified
to improve flood control, or 1213112025. whichever comes later. t his proposes modification
was presented to all CRA parties for approval, and pending approval and successful amendment
of the WQC, this modification will be filed with the rr-rC as a license amendment. Based on the
information provided, SCDNR sees no reason to oppose this proposed modification to the wYC.
Appendix A-2.0 Flow Articles; Recreation Flows -- Duke znerby is proposing to modify the
recrearo..rd flo— release at Lake Wylie by reducing flows from 6.000 cfs to 3.000 cfs during the
summer months. This recommendation w..s made by a member of the FAC, who has monitored
the recreational flows since their inception. Reasons provided for reducing rows include: 1 the
3.000 cfs flows provided duriny, the spring and fall have been acceptable to most paddlers_ but
the 6,000 cfs level has proved to be too challengin, Por the typical paddlers using this section of
tRc Catawba River; 2) one of the local outfitters, Catawba River Expeditions, has elected not to
run river trips at the 6,000 cfs tevCt for safety reasons; and 3) tubing has increased in popularity
and this adds to the need to drop flows to 3.000 cfs throughout Me season. This modification was
presentee to It CRA parties for approval, and pending approval and successful amendment of %
the WQC_ this modification will be filed with the FERC as a license amendment. SCDNR
supports this proposed modification to the WQC.
Appendix A-3.0 Low Inflow Protocol �Lir) artictC a..8 Appendix C -- Modifications to the
LIP are needed because of proposed changes to reservoir elevations, as described above Por
Appendix A-1.0. Reservoir etc.ations are described in the LIP and used as one of the triggers for
LIP implementation. Other changes which are expected to make tRe LtP more adaptable and
effect:vc, are also proposed; and these changes were developed in consultation with the Catawba
Wateree Drought Management Adviso.-, Group tCW-DMAG), on which SCDNR serves. The
CRA gives the CW-DMAG, the authority to modify the LIP. SCDNm has revie..Cd the proposed
changes to the Lir and has no basis for opposition.
Appendix A-4.0 Maintenance and Emergency Protocol (MEP) Article ana A,ppenai- V --
The proposed changes to the MEP are primarily edits or updates, such as: Duke Energy is
proposing to add the National Marine Fisheries Service kivivtFS) and the Bureau of Indian
Attra:rs (BIA) to the notification list of the MEP, updating acronyms for the NoRh Carolina
Division Of Environmental Quality, and ..ordine changes fur clarification purposes. None of
these changes require approval of CRA stakeholders, and SCui-4K has no reason to oppose them.
Appendix A-5.0 Water Quality Art:cto a; -.d Appendix F: Water q2uality Monitoring Plan
(WVMP) -- The revised WQIP presents changes to include a shift from a fully in-house (Duke
Energy) system of watC. quality monitoring to a partnership with the US Geological Survey.
wherein USGS will provide the necessary water quality monitorin6 services. Other changes
include minor adjustments to proposed data collection instruments and locations; which appear
to be reasonable. The scheuute provided in Table 3 uf the revised plan is consistent with the
schedule proposed earlier in CRA Appendix M. The proposed revisions to the WQIP appear to
be acceptable to SCDNR.
4

Mr. Mark Oakley
Comments o.-. ua,.rt AFFI:owt-.on for Amendment of Water Duality Certification for Catawba-Wateree
Hydroelectric Project
August 25, 2016
Appendix A-2.0 Flow Articles and Appendix L: riow an$ water duality Implementation
Han (FWgIP) The FWgIP was developed by the relicensing stakeholder group for the Ctc.►
to identify water quality enhancements a, -.i3 a plan to implement those enhancements. The
FWQIP provides a site-specific list of measures that Duke Energy will taxe DO;- r..ovidine aquatic
flows, recreuron flows and for meeting the applicable water quality standards: a schedule for
when these measures will be implemented; and any irt.rim measures that will be taken to
address flew releases or DO improvements prior to completing the necessary physical
modifications to the rro�emit. Also, the CRA addresses additional enhancements if it is
determined that the enhancements described in the Fwyir co not full,, meet DO standards.
Duke Energy is proposing three cnan,�s to the implementation schedule for enhancements in
South Carolina. Duke Energy is proposing to extend the schedule for the 0. -,.at Falls Lonr6 and
snort Bypass modifications by 34 months (a change from 21 months as described in the CRA to
55 months, as presented in the draft Application.
Reasons provided for tn:.i time extension include an increased scope of work being considered
for the controlled release of flows to the bypass reaches. i he origi.-.u] idea, which was to use
notches, gates or bladder dams to release both minimum continuous and recreation flows, has
changed and Duke Energy is consitlea inu, installation of an Obermeyer gate, which increases the
scope of this modification. Also_ on the short bypass. Duke Energy wants to ;nteerate the now
release ao—. ision (also Obermeyer gates as described for the Long Bypass) into an overall
modification to make dam stability modification, and to replace the existing flashboards with
bladder dams. This will improve Duke Energy's ability to meet compliance. to addition, the
existing flashboarus can be trouble -crone and trip unpredictably, resulting in difficulty in
managing flow releases and undesired debris in the short oypwss reach, and compromising public
safety.
Duke Energy is proposing to extend the Wateree Hydro Station unit lepiac.ment date from 30
months in the CRA to 42 months in draft Application. The Wylie and Wateree unit replacements
are unique_ and the designs required to signiiicandy increase dissolved oxygen under reduced
flow conditions while utilizing the same intake structures and turbine outlet structures are
complicates. rather than have simultaneous installations that may duplicate unexpected
problems, Duke is proposing to stagger these implementarons to maximize lessons learned,
correct any discovered design or manufacturing deficiencies. and make more efficient use of
installation crews. t he rea.ons provided to justify a change in schedule for the Wateree unit
replacement seem reasonable. could aid in reducing unforeseen proolems and repetitive
mistakes, and extends the implementation of this enhancement only 12 months. SCDNR does not
anticipate any objections to this proposed chance.
3Cuivx nous that the proposed changes to the Great Falls long and short bypasses will delay the
implementation of flows (continuous anti recrc..tional) to these areas by alm„st three years. Also,
there were no interim measures identified in the CRA to provide flows to these areas, :n part
because they were sen.duled for implementation in less than two years after license closure. We
request that Duke Energy strive to complete these modifications ahead „f schedule (prier to 55
5

rvir. M— K EuK1c_y
Comments on Draft Application for Amendment of Water yuaiity Certir.cution io. Catawba-Wateree
Hydroelectric Project
August 25, 20 115
months), and consider the acvelopment of an interim measure that could be used to provide some
flow to the bypasses in the meantime. Lt
We appreciate the oppoRunky to Yrov. ide SCDNR comments on the draft Application for
Amendment of the WQC. Based on this review, we believe the proFosed modifications are
consistent witn tn� South Carolina Water Plan. If you have any questions regarding these
comments, please contact me at 80.�-/.)z;-yU95 or Dick Christie at 803-609-7014.
Sincerely_
Bill Marshall
Coordinator, FERC Hydro Projects Review
cc: Jeff Lineberger, Duke Energy
rsou rr-rr,, SCDNR
Dick Christie_ SCDNm
Greg Mixon, SCDNR

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