20071868 Ver 1_401 Application_20071107

TA
Devine Tarbell & Associates, Inc.
Gmnuldng Enpiceem, Scienuxu, & Regul~tr~ry Speculwa
October 26, 2007
~t~~' ' ' ~ t t ~ Principals:
fgl~ii ~ TS~~ifi~ ~tE., President
1\ [ €~ dhn.C.lTazbell, P.E.
James M. Lynch
Edwin C. Luttrell, F.E.
D ~~~~~~
NOV ,6 2007
4ENR -WATER ~ 7- 1 S 6 S
WE1IgNpg AND STq~r~~ H
Ms. Cyndi Karoly -Supervisor
North Carolina Department of Environment and Natural Resources
Division of Water Quality - 401/Wetlands Uriit
1650 Mail Service Center
Raleigh, NC 27699-1650
Subject: Catawba-Wateree Hydroelectric Project (FERC No. 2232)
Bridgewater Powerhouse Construction Project
Clean Water Act Section 401 Water Quality Certification
General Certifications 3634 and 3631; IWGP 100000
Dear Ms. Karoly:
Duke Energy Carolinas, LLC (Duke) is in the preconstruction planning phase of the Bridgewater
Powerhouse Construction project (the project) immediately adjacent to the Linville Dam. The
development is owned and operated by Duke and is located approximately 10 miles west of
Morganton, North Carolina in Burke and McDowell Counties. Duke is proposing to construct a
new powerhouse at the Linville Dam. This facility is licensed and regulated by the Federal
Energy Regulatory Commission (FERC) and the proposed improvements are the result of a
nationwide effort to increase the safety of dams and structures for potentially catastrophic events.
Duke has contracted with Devine Tarbell & Associates, Inc. (DTA) to conduct the regulatory and
environmental work associated with the powerhouse project.
On July 20, 2007, DTA scientists conducted a formal delineation of waters of the US and a rare,
threatened, and endangered (RTE) species survey. Jurisdictional wetlands and waters of the US
were surveyed and mapped using the routine methodology outlined within the 1987 US Army
Corps of Engineers Delineation Manual. The North Carolina Natural Heritage Program Element
Occurrence database and the United States Fish and Wildlife Service RTE Species database were
consulted for information and locations of known RTE species within Burke County. During the
field investigation, all known elements and their preferred habitats occurring within the county
were surveyed for by experienced personnel.
T: 704.377.4182 400 S. Tryon Street, Suite 2401, Charlotte, NC 28285 F: 704.377.4185
Portland, Maine Charlotte, North Carolina Sacramento, California York, Pennsylvania
207.775.4495 704.377.4182 916.564.4214 717.741.9850
www.Devine 1'arbell.com
Syracuse, New Yurk Seattle, ~G'ashin~rton Bellingham, Washington Boise, Idaho
315.451.2325 425.391.0523 360.671.1150 208.319.1977

J Ms. Karoly
October 26, 2007
Page 2
DTA
Investigators identified and mapped two jurisdictional waters of the US and one wetland within
the area of project impact. Proposed permanent impacts to jurisdictional waters including
wetlands include the following:
^ Installation of a culvert and fill along 50 feet of an unnamed perennial tributary (Stream
#1) of the Catawba River and a small segment of associated wetlands (less than 0.01 acre);
^ Excavation of approximately 180 feet of the Catawba River bank to connect the tailrace of
the new powerhouse with the river;
^ Hand-clearing of approximately 4,500 square feet of Catawba River buffer; and
^ Fill of approximately 0.30 acre of isolated open water of the state.
Proposed temporary impacts include the following:
^ Fill of 170 feet of Stream #1 and its associated wetland (approximately 0.02 acre);
^ Installation of a coffer dam or similar device to divert flow from Stream #1 in order to
maintain downstream flows;
^ Temporary hand-clearing of approximately 5,000 square feet of Catawba River buffer; and
^ Installation of a coffer dam within the Catawba River around the proposed tailrace work
area (approximately 2701inear feet).
Due to the nature of the project, total avoidance of impacts to jurisdictional waters of the US and
state including wetlands would be prohibitive. However, through an extensive siting process,
proposed permanent impacts have been minimized and proposed temporary impacts have been
designed to have a minimal adverse effect on aquatic life and hydrologic functions. Best
management practices (BMPs) will be utilized within the buffers including hand clearing of
trees, no grubbing of the root mat, and installation of silt fencing. All temporary fill will be
removed upon project completion and the site will be returned to original grade. Erosion and
sediment control measures that meet or exceed the most current version of the North Carolina
Erosion and Sediment Control Planning and Design Manual will be installed and maintained for
the life of the project.
Because the project is located in a North Carolina Wildlife Resources Commission (WRC)
designated trout county, a copy of all joint 404/401 application documents have been sent
concurrently to Mr. Ron Linville of the WRC for comments and approval for work within a
North Carolina trout county. The North Carolina State Historic Preservation Office (SHPO) has
been contacted regarding this project and has requested a formal archaeological survey of the
area for historic resources. Although Duke has contracted with an experienced archaeologist to
identify and evaluate the significance of archaeological remains that may be damaged or
destroyed by the proposed project, the survey has not been completed at the time of this writing.
Duke will furnish the completed survey to the SHPO for comments and to your office to append
to the final permit document. At that time Duke will request that the SHPO supply their
comments to your office directly to facilitate timely review of the permit application.

Ms. Karoly
October 26, 2007
Page 3
TA
Enclosed please find seven copies of all joint 404/401 permit application documents and a check
in the amount of $475 made payable to the North Carolina Division of Water Quality for
application processing. Two copies of all joint 404/401 application documents have been sent to
Mr. Steve Chapin of the US Army Corps of Engineers, Asheville Regional Office for review and
authorization under the Clean Water Act Section 404 and one copy has been supplied to the
North Carolina Wildlife Resources Commission for comments and approval regarding work
within a designated trout county. Should you have any questions or comments, please feel free
to contact me at [phone] or Mr. Tim Huffman with Duke at [phone].
Sincerely,
DEVINE TARBELL & ASSOCIATES, INC.
/~
Jason Isbanioly
Associate Scientist
JUcef
Enclosures
cc w/o encl: T. Huffman, Duke
W. McGarity, DTA
S. Fletcher, DTA
File

Devine Tarbell & Associates, Inc.
Consulting Engineers, Scientists, & Regulatory- Specialists
November 1, 2007
Principals:
John J. Devine, P.E., President
John C. Tarbell, P.E.
James M. Lynch
Edwin C. Lumell, P.E.
07-1868
Ms. Cyndi Karoly -Supervisor
North Carolina Department of Environment and Natural Resources
Division of Water Quality - 401/Wetlands Unit
1650 Mail Service Center
Raleigh, NC 27699-1650
Subject: Catawba-Wateree Hydroelectric Project (FERC No. 2232)
Bridgewater Powerhouse Construction Project
401 Certification Processing Fee
Dear Ms. Karoly`
_o
Please find enclosed a check in the amount of $95.00 made payable to the North Carolina
Division of Water Quality. This check supplements the $475.00 check attached to the
Bridgewater Powerhouse Construction Project 401 application sent to your office this week. The
total of both checks ($570.00) reflects the 401 certification rate increase that went into effect
September 1, 2007. Should you have any questions or concerns please contact me at 704-342-
7364.
Sincerely,
Devine Tarbell & Associates, Inc.
``.~.
Jason Isbanioly
Associate Scientist
~~ ~ ~~~ fii,~~ a ~~
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1NEf1?~ND? p,,u~ ~~ ft~'1"~:'~P,T~~R'.3PA1~rFi
T: 704.377.4182 400 S. Tryon Street, Suite 2401, Charlotte, NC 28285 F: 704.377.4185
Portland, Maine Charlotte, North Carolina
207.775.4495 704.377.4182
Sacramento, California York, Pennsylvania
916.564.4214 717.741.9850
www DevineTarbell.com
Syracuse, New York Seattle, Washington Bellingham, Washington Boise, Idaho
315.451.2325 425.391.0523 360.671.1150 208.319.1977

1
1
Please provide the following info:
_.. 1 =
Corps Submittal Cover Sheet ~ ~~
-!_'a ~ j
1~ _I
(j ! i u
' 1.Project Name: Bridgewater Powerhouse Construction Project (FERC Project No. 2232)
' 2.Name of Property Owner: Duke Energy Carolinas, LLC
3.Name of Consultant /Agent: Devine Tarbell & Associates, Inc (Mr. Jason Isbanioly)
* Agent authorization needs to be attached.
' 4.Related/Previous Action ID number(s) 2007-2247
' S.Site Address 5790 Powerhouse Road NC 28628
6.Subdivision Name:
7.City: Glen Al
8.County:
Burke
' 9. Lat: 35.7428 N
l0.Quadrangle Name:
Long:
•81.8369
(Decimal Degrees Please
Glen Alpine
11.Waterway: Catawba River
' 12.Watershed: Catawba
13.Requested Action:

Nationwide Permit # 33&39
' 3634
3631&
IWGP
' ® General Permit # 1000000
^ Jurisdictional Determination Request

^ Pre-Application Request

G ~~~~~ nn
NO V 5 U
200
AENR - WA
~~~~~
1

1

Duke
IEnergy~
Engineering & Technical Services
526 S. Church Street
Charlotte, NC 20202
October 22, 2007
Mr. Steve Chapin -Project Manager
Asheville Regional Office
United States Army Corps of Engineers
151 Patton Avenue, Room 208
Asheville, North Carolina 28801-5006
Re: Duke Energy Carolinas, LLC
Catawba-Wateree Hydroelectric Project (FERC No. 2232)
Bridgewater Powerhouse Construction Project
Agent Authorization Letter
Dear Mr. Chapin:
Duke Energy Carolinas, LLC. (Duke) of Charlotte, North Carolina is in the pre-
construction planning stage of a new hydroelectric powerhouse near on the Catawba
River, below Lake James, near the town of Morganton in Burke County, North Carolina.
The preferred siting alternative of the powerhouse project will impact some potentially
jurisdictional waters of the US.
Duke has contracted with Devine Tarbell & Associates, Inc. (DTA) to perform a wetland
delineation and resource assessment on the proposed site for the purpose of obtaining the
necessary Clean Water Act section 404/401 permits and water quality certifications.
DTA, as represented by Mr. Jason Isbanioly will be Duke's authorized agent in the
coordination, preparation, and submittal of the pre-construction notification permit
package. Mr. Isbanioly has full signatory authority for this project as granted by Duke.
If you have any questions or require further information on this matter feel free to call me
at [phone] or Mr. Isbanioly at [phone].
Sincerely,
~_
Timothy L Huffman
Senior Project Manager
1

0 z - ~ ~ ~ a r~~Y°~E ,-~-
ii~~'r`~%~~' t
Office Use Only' Form Version March OS
USACE Action ID No. DWQ No.
(If any particular item is not apphcabie to tries project, please enter ..i~ot t~ppiicaoic ~r ~~~h .~

1

I. Processing
1. Check all of the approval(s) requested for this project:
® Section 404 Permit ® Riparian or Watershed Buffer Rules
^ Section 10 Permit ® Isolated Wetland Permit from DWQ
® 401 Water Quality Certification ^ Express 401 Water Quality Certification
2. Nationwide, Regional or General Permit Number(s) Requested: NWPs 33 & 39 (GCs 3634
& 3631 IWGP• 100000
3. If this notification is solely a courtesy copy because written approval for the 401 Certification
is not required, check here: ^
4. If payment into the North Carolina Ecosystem Enhancement Program (NCEEP) is proposed
for mitigation of impacts, attach the acceptance letter from NCEEP, complete section VIII,
and check here:
5. If your project is located in any of North Carolina's twenty coastal counties (listed on page
4), and the project is within a North Carolina Division of Coastal Management Area of
Environmental Concern (see the top of page 2 for further details), check ~ ~ ~ V
v
II. Applicant Information
NOV .5 2007
1. Owner/Applicant Information ()ENR -WATER QUALITY
Name: Duke Energy Carolinas LLC (Tim Huffman)WETtAI~3A1rosTO~e~wt~,nuRH
Mailing Address: 526 South Church Street
Mail Code: EC l OA
Charlotte NC 28202
Telephone Number:~704) 382-5185 Fax Number:
E-mail Address: TLHuffman(cr~duke-ener$y com
2. Agent/Consultant Information (A signed and dated copy of the Agent Authorization letter
must be attached if the Agent has signatory authority for the owner/applicant.)
Name: Devine Tarbell & Associates
Company Affiliation: Jason Isbaniol~(Associate Scientist)
Mailing Address: 400 S Tryon Suite 2401
Charlotte NC 28285
Telephone Number: [phone] Fax Number: [phone]
E-mail Address: jason isbaniolyna devinetarbell com
Page 5 of 14

III. Project Information
Attach a vicinity map clearly showing the location of the property with respect to local
landmarks such as towns, rivers, and roads. Also provide a detailed site plan showing property
boundaries and development plans in relation to surrounding properties. Both the vicinity map
' and site plan must include a scale and north arrow. The specific footprints of all buildings,
impervious surfaces, or other facilities must be included. If possible, the maps and plans should
include the appropriate USGS Topographic Quad Map and NRCS Soil Survey with the property
' boundaries outlined. Plan drawings, or other maps may be included at the applicant's discretion,
so long as the property is clearly defined. For administrative and distribution purposes, the
USACE requires information to be submitted on sheets no larger than 11 by 17-inch format;
however, DWQ may accept paperwork of any size. DWQ prefers full-size construction
drawings rather than a sequential sheet version of the full-size plans. If full-size plans are
reduced to a small scale such that the final version is illegible, the applicant will be informed that
' the project has been placed on hold until decipherable maps are provided.
1. Name of project: Bridgewater Hydroelectric Powerhouse Demolition and Rebuild Project
' 2. T.LP. Project Number or State Project Number (NCDOT Only):
J
' 3. Property Identification Number (Tax PIN): 175300872488
' 4. Location
County: Burke Nearest Town: Glen Alpine
Subdivision name (include phase/lot number): N/A
Directions to site (include road numbers/names, landmarks, etc.): From Interstate 40, take
' exit 94 D~artsville Road turn north and go approximately 0.5 mile. Turn left (west) on US
Highway 70 and go 1 7 miles Turn richt (north) onto Bridgewater Road and ¢0 2.7 miles
' (Bridcewater Road changes to N Powerhouse Road) Turn right (southwest) onto Powerhouse Road
0 0 5 mile End at 5790 Powerhouse Road powerhouse is on the left side of the road.
and g
_
' S. Site coordinates (For linear projects, such as a road or utility line, attach a sheet that
separately lists the coordinates for each crossing of a distinct waterbody.)
Decimal Degrees (6 digits minimum): 35.7428 °N 81.8369 °W

6. Pro e size acres : 26.8
p rtY ( )
' 7. Name of nearest receiving body of water: Catawba River (Old Linville River)
8. River Basin: Catawba River Basin
' (Note -this must be one of North Carolina's seventeen designated major river basins. The
River Basin map is available at http•//h2o.enr.state.nc.us/admin/maps/.)
9. Describe the existing conditions on the site and general land use in the vicinity of the project
at the time of this application: Site conditions reflect current usage as a hydroelectric
Page 6 of 14

owerhouse i.e. owerhouse structure out-buildin switch and arkin area maintained
lawn area) Historic land use is heavily impacted by creation of Lake James. Prevailing
' general land use in vicinity is primarily forested agLiculture and small residential. See
Project Narrative
' 10. Describe the overall project in detail, including the type of equipment to be used: Demolition
of the existin~,=powerhouse and construction of the new powerhouse will require the use of
heave ~radin~ equipment dump trucks and a gantry crane. To provide access to the site
approximately 50 linear feet of a first order jurisdictional perennial stream will be
permanently placed in a culvert Approximately 170 feet of the same stream will be
temporarily dewatered and filled to provide site access Temporary impacts involve the use
of a diversion ditch around system to maintain downstream flows. This section of stream
will be returned to on i~ nal grade flow and condition upon project completion. See Prolect
Narrative.
' 11. Ex lain the purpose of the proposed work: The owerhouse is being_demolished and built
p
to provide room for the FERC mandated Linville Dam embankment stability Prolect. The
' improved Linville embankment will necessarily extend approximately 100 feet Past the
existing powerhouse footprint See Project Narrative.
IV. Prior Project History
If jurisdictional determinations and/or permits have been requested and/or obtained for this
project (including all prior phases of the same subdivision) in the past, please explain. Include
the USACE Action ID Number, DWQ Project Number, application date, and date permits and
' certifications were issued or withdrawn. Provide photocopies of previously issued permits,
certifications or other useful information. Describe previously approved wetland, stream and
buffer impacts, along with associated mitigation (where applicable). If this is a NCDOT project,
list and describe permits issued for prior segments of the same T.I.P. project, along with
construction schedules. NA
V. Future Project Plans
' Are any future permit requests anticipated for this project? If so, describe the anticipated work,
and provide justification for the exclusion of this work from the current application.
' No future permits are anticipated for this powerhouse relocation proiect
' VI. Proposed Impacts to Waters of the United States/Waters of the State
It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to
' wetlands, open water, and stream channels associated with the project. Each impact must be
listed separately in the tables below (e.g., culvert installation should be listed separately from
Page 7 of 14

riprap dissipater pads). Be sure to indicate if an impact is temporary. All proposed impacts,
permanent and temporary, must be listed, and must be labeled and clearly identifiable on an
accompanying site plan. All wetlands and waters, and all streams (intermittent and perennial)
should be shown on a delineation map, whether or not impacts are proposed to these systems.
Wetland and stream evaluation and delineation forms should be included as appropriate.
Photographs may be included at the applicant's discretion. If this proposed impact is strictly for
wetland or stream mitigation, list and describe the impact in Section VIII below. If additional
space is needed for listing or description, please attach a separate sheet.
Provide a written description of the proposed impacts: One jurisdictional first order
perennial stream is located onsite A~ermanent culvert will be installed on the upper 50 feet
of stream the lower 170 feet will be temporarily dewatered using a diversion ditch and
HDPE pipe sXstem Approximately 180 linear feet of the Catawba River right descending
bank will be excavated to the ordinary high water mark to connect the tailrace to the river.
0 03-acre of isolated waters will be~ermanently filled. See Project Narrative.
2. Individually list wetland impacts. Types of impacts include, but are not limited to
mechanized clearing, grading, fill, excavation, flooding, ditching/drainage, etc. For dams,
~enarately list impacts due to both structure and flooding.

Wetland Impact Type of Wetland Located within
100-year Distance to
Nearest Area of
Impact
Site Number Type of Impact (e.g., forested, marsh, Floodplain Stream (acres)
(indicate on map) herbaceous, bog, etc.) ( es/no) (linear feet)
1 Permanent PEM No 0 0.003
2 Temporary PEM No 0 0.01
Total Wetland Impact (acres) 0.013
3. List the total acreage (estimated) of all existing wetlands on the property: 0.013
4. Individually list all intermittent and perennial stream impacts. Be sure to identify temporary
impacts. Stream impacts include, but are not limited to placement of fill or culverts, dam
construction, flooding, relocation, stabilization activities (e.g., cement walls, rip-rap, crib
' walls, gabions, etc.), excavation, ditching/straightening, etc. If stream relocation is proposed,
plans and profiles showing the linear footprint for both the original and relocated streams
mli~t he included. To calculate acreage, multiply length X width, then divide by 43,560.

Stream Impact
Perennial or Average
Stream Width Im act
p Area of
Number Stream Name Type of Impact Intermittent? Before Impact Length Impact
(indicate on map) (feet) (linear feet) (acres)
1 Unnamed Permanent Perennial 3 50 0.003
2 Unnamed Temporary Perennial 3 170 0.01
3 Catawba River Permanent Perennial 125 180 0.0]
4 Catawba River Temporary Perennial 125 277 0.25
632 (230
Total Stream Impact (by length and acreage) feet of 0.023
permanent
impacts)
Page 8 of 14

5. Individually list all open water impacts (including lakes, ponds, estuaries, sounds, Atlantic
' Ocean and any other water of the U.S.). Open water impacts include, but are not limited to
I;tt PY~a~at;~n ~1rPrluinu_ fln~ciin~_ drainage. bulkheads, etc.

1

1

1

-~
Open Water Impact -~ ---
Type of Waterbody
Area of

Site Number Name of Waterbody
Type of Impact
(lake, pond, estuary, sound,
Impact
(indicate on map) (if applicable) bay, ocean, etc.) (acres)
1 Stillin Basin Permanent Isolated waters of the state 0.30
Total Open Water Impact (acres) 0.30
6. List the cumulative im act to all Waters of the U.S. resultin from the ro~ect:
Stream Im act (acres): 0.023
Wetland Im act (acres): 0.013
Open Water Im act (acres): NA*
Total Im act to Waters of the U.S. (acres) 0.036
Total Stream Impact (linear feet): 632 (230
feet of
permanent
im acts)
*Isolated open water impact (0.30) was not included because the basin is not a waters of the U.S.
7. Isolated Waters
Do any isolated waters exist on the property? ®Yes ^ No
Describe all impacts to isolated waters, and include the type of water (wetland or stream) and
the size of the proposed impact (acres or linear feet). Please note that this section only
applies to waters that have specifically been determined to be isolated by the USACE.
The stilling basin located adjacent to the powerhouse will be permanently filled to provide
make room for the new powerhouse footprint A site visit conducted by the United States
Corps of Engineers determined that the stilling basin is not a Jurisdictional Waters of the
U S At normal water levels the basin is approximately 0.30-acre. At generation flow the
basin is proximately 0 50-acre Please refer to Appendix C of the Proiect Narrative for a
copy of the USACE Notification of Jurisdictional Determination.
8. Pond Creation
If construction of a pond is proposed, associated wetland and stream impacts should be
included above in the wetland and stream impact sections. Also, the proposed pond should
be described here and illustrated on any maps included with this application.
Pond to be created in (check all that apply): ^ uplands ^ stream ^ wetlands
Describe the method of construction (e.g., dam embankment, excavation, installation of
draw-down valve or spillway, etc.): NA
Proposed use or purpose of pond (e.g., livestock watering, irrigation, aesthetic, trout pond,
local stormwater requirement, etc.): NA
Current land use in the vicinity of the pond: NA
Size of watershed draining to pond: NA Expected pond surface area: NA
VII. Impact Justification (Avoidance and Minimization)
Page 9 of 14

' Specifically describe measures taken to avoid the proposed impacts. It may be useful to provide
information related to site constraints such as topography, building ordinances, accessibility, and
financial viability of the project. The applicant may attach drawings of alternative, lower-impact
site layouts, and explain why these design options were not feasible. Also discuss how impacts
were minimized once the desired site plan was developed. If applicable, discuss construction
techniques to be followed during construction to reduce impacts. Site accessibility is constrained
by the small property size. Alternative impacts were analyzed for access practicality and
t resource impacts. Impacts were reduced from approximately 366 feet of permanent stream
impacts to a combination of permanent and temporary impacts. Temporary impacts to the lower
170 feet of stream allow for the ma1ority of free flowing channel to be restored after project
' comRletion. Impacts to the Catawba River bank are necessary to install the tailrace. See Project
Narrative.
' VIII. Mitigation

1

DWQ - In accordance with 15A NCAC 2H .0500, mitigation may be required by the NC
Division of Water Quality for projects involving greater than or equal to one acre of impacts to
freshwater wetlands or greater than or equal to 150 linear feet of total impacts to perennial
streams.
USACE - In accordance with the Final Notice of Issuance and Modification of Nationwide
Permits, published in the Federal Register on January 15, 2002, mitigation will be required when
necessary to ensure that adverse effects to the aquatic environment are minimal. Factors
including size and type of proposed impact and function and relative value of the impacted
aquatic resource will be considered in determining acceptability of appropriate and practicable
mitigation as proposed. Examples of mitigation that may be appropriate and practicable include,
but are not limited to: reducing the size of the project; establishing and maintaining wetland
and/or upland vegetated buffers to protect open waters such as streams; and replacing losses of
aquatic resource functions and values by creating, restoring, enhancing, or preserving similar
functions and values, preferable in the same watershed.
If mitigation is required for this project, a copy of the mitigation plan must be attached in order
for USACE or DWQ to consider the application complete for processing. Any application
lacking a required mitigation plan or NCEEP concurrence shall be placed on hold as incomplete.
An applicant may also choose to review the current guidelines for stream restoration in DWQ's
Draft Technical Guide for Stream Work in North Carolina, available at
htt~//h2o. enr.state. nc. us/ncwetlands/strm tide. html .
Provide a brief description of the proposed mitigation plan. The description should provide
as much information as possible, including, but not limited to: site location (attach directions
and/or map, if offsite), affected stream and river basin, type and amount (acreage/linear feet)
of mitigation proposed (restoration, enhancement, creation, or preservation), a plan view,
preservation mechanism (e.g., deed restrictions, conservation easement, etc.), and a
description of the current site conditions and proposed method of construction. Please attach
a separate sheet if more space is needed.
Page 10 of 14

Comnensatorv mitigation will be provided for in the form of payment into the Ecosystem
' Enhancement Pro>;ram's In-lieu Fee Fund See Project Narrative.
2. Mitigation may also be made by payment into the North Carolina Ecosystem Enhancement
Program (NCEEP). Please note it is the applicant's responsibility to contact the NCEEP at
[phone] to determine availability, and written approval from the NCEEP indicating
that they are will to accept payment for the mitigation must be attached to this form. For
' additional information regarding the application process for the NCEEP, check the NCEEP
website at http://h2o.enr.state.nc.us/wrp/index.htm. If use of the NCEEP is proposed, please
check the appropriate box on page five and provide the following information:
Amount of stream mitigation requested (linear feet): 210
Amount of buffer mitigation requested (square feet): 4.500
' Amount of Riparian wetland mitigation requested (acres): NA
Amount ofNon-riparian wetland mitigation requested (acres): NA
Amount of Coastal wetland mitigation requested (acres): NA
IX. Environmental Documentation (required by DWQ)
' 1. Does the project involve an expenditure of public (federal/state/local) funds or the use of
public (federal/state) land? Yes ^ No
2. If yes, does the project require preparation of an environmental document pursuant to the
requirements of the National or North Carolina Environmental Policy Act (NEPA/SEPA)?
Note: If you are not sure whether a NEPA/SEPA document is required, call the SEPA
coordinator at [phone] to review current thresholds for environmental documentation.
Yes ^ No ^
3. If yes, has the document review been finalized by the State Clearinghouse? If so, please
attach a copy of the NEPA or SEPA final approval letter. Yes ^ No ^
X. Proposed Impacts on Riparian and Watershed Buffers (required by DWQ)
It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to
' required state and local buffers associated with the project. The applicant must also provide
justification for these impacts in Section VII above. All proposed impacts must be listed herein,
and must be clearly identifiable on the accompanying site plan. All buffers must be shown on a
map, whether or not impacts are proposed to the buffers. Correspondence from the DWQ
Regional Office may be included as appropriate. Photographs may also be included at the
' applicant's discretion.
1. Will the project impact protected riparian buffers identified within 15A NCAC 2B .0233
(Meuse), 15A NCAC 2B .0259 (Tar-Pamlico), 15A NCAC 02B .0243 (Catawba) 15A NCAC
' 2B .0250 (Randleman Rules and Water Supply Buffer Requirements), or other (please
identify )? Yes ® No ^
Page 11 of 14

' 2. If "yes", identify the square feet and acreage of impact to each zone of the riparian buffers.
If buffer mitigation is required calculate the required amount of mitigation by applying the
buffer multipliers.
1
1
1
~ x~.
1
1
1
1
' x~~.
1
1
1
1
Zone* Impact
s uare feet Multiplier Required
Miti ation
1 2,700 3 (2 for Catawba) 5,400
2 1,800 1.5 2,700
Total 4,500 8,100
* Zone 1 extends out 30 feet perpendicular from the top of the near bank of channel; Zone 2 extends an
additiona120 feet from the edge of Zone 1.
3. If buffer mitigation is required, please discuss what type of mitigation is proposed (i.e.,
Donation of Property, Riparian Buffer Restoration /Enhancement, or Payment into the
Riparian Buffer Restoration Fund). Please attach all appropriate information as identified
within 15A NCAC 2B .0242 or .0244, or .0260. Unavoidable riparian buffer impacts are
associated with creation of the powerhouse tailrace. The proposed tailrace is located within
the existing ROW minimizing total disturbance. Disturbances associated with dam
maintenance to the riparian buffer categorized as "allowable" under Catawba River Basin:
Protection and Maintenance of Existing Riparian Buffers Section 6 Table of Uses. Duke
proposes to mitigate for impacts through payment into the Riparian Buffer Restoration Fund.
Additional temporary buffer impacts (approximately 5,000 sq. ft), as well as a preliminary
restoration flan are described in Section 4.2 of the attached Project Narrative.
Stormwater (required by DWQ)
Describe impervious acreage (existing and proposed) versus total acreage on the site. Discuss
Stormwater controls proposed in order to protect surface waters and wetlands downstream from
the property. If percent impervious surface exceeds 20%, please provide calculations
demonstrating total proposed impervious level. Impervious surfaces will remain relatively
similar to existing conditions and they include the buildins? itself, the parking area, and the
driveway. Based on current impervious surfaces and proposed impervious surfaces, the
percentage of impervious surfaces to total project area is estimated to be 2%. Stormwater
mana ement will follow current design and be channeled via vegetated conveyances to an
existin d~~e Swale. See Project Narrative.
Sewage Disposal (required by DWQ)
Clearly detail the ultimate treatment methods and disposition (non-discharge or discharge) of
wastewater generated from the proposed project, or available capacity of the subject facility.
The sanitary waste from the powerhouse facility bathroom (located on the Generator Floorl and
hand wash /utility sink (located on the Turbine Floor) shall be collected in a common header and
avit~ drained to a holding tank lift station), located in the basement. The lift station shall
include a sewage~rinding_pump. Once the sewage in the holding tank rises to apre-determined
level the rig nding_pump shall pump the raw sewage out of the powerhouse to a septic tank. The
septic tank shall gravity drain to a leach field located on site. The Contactor shall hire an outside
Page 12 of 14

a~~ltractor to ~ropcrly cj~sinn and install ~~ll of the ~c~ihment for th____~<uutaiy ~~~~~r syst~m un the
site. The design and c.apacitY requn-ementti shrill meet the Fn~atn~ers a~a~cn~l a1i,n~.~ ~~-ith all
local and stag re~~ure~l~ents for a sanitary se~~er s~t~;~~.
tlil. Violations rcc aired b~' D~'L
( I ~ Q)
Is this site in violation of Dti~'Q «'etland Rules (ISA NCAC ?H .?500) or piny E~uf_f~r ~.l~l~s?
Y"es ^ No
Is this an after-the-fact permit application? Yes ^ No
~~ilV. Cumulative impacts (i~equia-r~d h~ ~~~-(,~)
1 ~,l"ill this project (based on past a!~d reasonably anticipated fat,,;~e m~paets) result in ~~ddition~~l
development, which could impact nearby downstream water quality' Yes ^ No
If yes, please submit a qualitative or quantitative cumulative imp~2~a analysis in aecor~l~~nce with
the most recent North Carolina Division of ~y`ater Quality policy posted on our ~E~ebsite at
http:i h2o.enr.state.nc.usnc~~~etlands. If no, please provide a short narra[ive description:
Xti. (>tltc~~' ~~i~-C't~tust~tstce~ti ~C)1?tir~9Y~=i~:
It is the ~it?laiic.~nt's responsibility to submit the apl~~lication sufficiently pn a~ivt~nce of desired
construction dates to allow processing tim~_ for these pern7its. However_ _stl applicant may
choose to list constraints associ,~red with co~YStruction or scgt~ec~t~ing tht~t may im~~ose limits o~7
woriz schedules {e.u., draw-down schedules for h~i::es, dates associ<t'ed with En~laiit=erect and
Thi-e<~te~~ed Species.~accessibility problems. or other issl~ies outside of rile a,~plicant's control).
:lpplicanti:~~cnt's 4i~nature ihiCe
~~.
(Agent's signature is vtiiHd only if an attthoriz~~tion letter from the ~Ipplical~t is provided.)

P;<<~c l3 of 1 ~

Crescent Resources LLC
400 S. Tryon St. Suite 1300
1 Charlotte, NC 28285

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Adjoining Land Owners
Page 14 of 14