19910074 Ver 1_COMPLETE FILE_19910202

State of North Carolina
Department of Environment, Health, and Natural Resources
Division of Environmental Management
512 North Salisbury Street • Raleigh, North Carolina 27604
James G. Martin, Governor
William W. Cobey, Jr., Secretary
February 13, 1992
Mr. M. Paul Schmierbach, Manager
Environmental Quality
Tennessee Valley Authority
4400 Summit Hill Drive
Knoxville, Tennessee 37902
George T. Everett, Ph.D.
Director
Subject: Certification Pursuant to Section 401 of the Federal
Clean Water Act,
Proposed flow regulation weir, Chatuge Dam
Project # 91940, COE # 199200576
Clay County
Attached hereto is acopy of Certification No. 2692 issued.
to Tennessee Valley Authority dated February 13, 1992.
If we can be of further assistance, do not hesitate to
contact us.
Sincerely,
04111--
George T.
U
Attachments
4-44L
Everett
cc: Wilmington District Corps of Engineers
Corps of Engineers Asheville Regional Office
Asheville DEM Regional Office
Mr. John Dorney
Mr. John Parker
Central Files
REGIONAL OFFICES
Asheville Fayetteville Mooresville Raleigh Washington Wilmington Winston-Salem
704/251-6208 919/486-1541 704/663-1699 919/571-4700 919/946-6481 919/395-3900 919/896-7007
Pollution Prevention Pays
P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone]
An Equal Opportunity Affirmative Action P.mplovcr

NORTH CAROLINA
Clay County
CERTIFICATION
THIS CERTIFICATION is issued in conformity with the requirements
of Section 401 Public Laws 92-500 and 95-217 of the United States
and subject to the North Carolina Division of Environmental
Management Regulations in 15 NCAC 2H, Section .0500 to Tennessee
Valley Authority pursuant to an application filed on the 20 day
of December, 1991 to install a flow regulation weir about 0.9
miles downstream Chatuge dam.
The Application provides adequate assurance that the
discharge of fill material into the waters of Hiwassee River in
conjunction with the proposed weir for Chatuge dam in Clay County
will not result in a violation of applicable Water Quality
Standards and discharge guidelines. Therefore, the State of North
Carolina certifies that this activity will not violate Sections
301, 302, 303, 306, 307 of PL 92-500 and PL 95-217 if conducted
in accordance with the application and conditions: hereinafter set
forth.
Condition(s) of Certification:
1. That the activity be conducted in such a manner as to
prevent significant increase in turbidity outside the area
of construction or construction related discharge (increases
such that the turbidity in the Stream is. 25 NTU's or less
are not considered significant).
Violations of any condition herein set forth shall result in
revocation of this Certification.
This Certification shall become null and void unless the above
conditions are made conditions of the Federal Permit.
This the 13 day of February, 1992.
DIVISION OF ENVIRONMENTAL MANAGEMENT
rge T. Everett, Director
Geo
WQC# 2692
r

Department of Envi
512 North Salisl
James G. Martin, Governor
Dr. G. Wayne Wright
Corps of Engineers
P.O. Box 1890
Wilmington, NC 28402
Dear Dr. Wright:
E
11.i. 44'.n€.
m nt, Health and`;:; Natural Resources
Street. YM1ioa th; Carolina 27611
February 27, 1992
William W Cobey, Jr., Secretary
In keeping with your request this office has circulated to
interested state review agencies U.S. Army Corps of Engineers
Public Notice Action ID. 199200576 dated December 19, 1991 which
describes a project proposed by the Tennessee Valley Authority of
Knoxville. The project, involving construction of a weir to
enhance cold water fishery, is located .9 miles below Chatuge Dam
near Shooting Creek, in Clay County.
Based on a coordinated agency review, this state viewpoint
will interpose no objection to the project from an environmental
standpoint. It is important to note for the record, however, a
letter of broad general concern from the Division of Archives &
History concerning TVA activity in N.C. I refer to a letter of
Feb. 7, 1992 from David Brook, Deputy State Historic Preservation
office to Colonel Tulloch. We respectfully suggest your office
provide appropriate attention to any matters under your purview
relative the situation described in Mr. Brooks' letter.
The additional key agency comments for the record are as
follows:
Wildlife Resources Commission supports the project and
recommends the following permit conditions to minimize
adverse impacts:
1) Construction must be accomplished so that wet concrete
does not contact water entering or flowing in the
Hiwassee River. This will reduce the likelihood of
fish kills associated with weir construction.
2) Stringent erosion control measures should be
implemented where soil is disturbed and maintained
until project completion.
P.O. Box 27687, Raleigh, North Carolina 27611-7687 Telephone [phone]
An Equal Opportunity Affirmative Action Employer
Aff
Dr. G. Wayne Wright
Page 2
February 27, 1992
3) Temporary ground cover should be placed on bare
surfaces, including spoil piles, as soon as
construction is complete. Permanent vegetation in
these same areas must be established within 15 days of
project completion to provide long term erosion
control.
Division of Environmental Management - on February 13 issued
Section 401 Water Quality Certification No. 2692 for the
proposed activity.
Should you require additional input from the state on this
matter, do not hesitate to contact this office or the responding
agencies.
Very sincerely,
John R. Parker,Jr.
Inland -404 Coordinator
JRP:jr/aw
cc: Archives & History
Wildlife Resources Commission
Division of Environmental Management

d STA7Fa
?? awM ,nps`?`,
State of North Carolina
Department of Environment, Health, and Natural ces
r
Division of Coastal Management ,b?
225 North McDowell Street Raleigh, North Car ?. 2 , 2 >
James G. Martin, Governor ?,p-r,``? gem Schecter
?,? `r- r`;,s can
Director
William W. Cobey, Jr., Secretary
c; ":k -:321
January 3, 1992 ?e
ezzti
MEMORANDUM
TO: Dr. George T. Everett, Director
Division of Environmental Management
FROM: John R. Parker, Jr. .
Inland "404" Coordinator
SUBJECT: "404" Project Review
The attached U.S. Army Corps of Engineers. Public Notice for Action No. 199200576
dated December 19, 1991 describing a project proposed by The Tennessee Valley
Authority is being circulated to interested state agencies for comments on
applicable Section 404 and/or Section 10 permits.
Please indicate below your agency's position or viewpoint on the proposed project
and return this form by January 17, 1992. If you have any questions regarding the
proposed project, please contact me at 733-2293. When appropriate, in-depth
comments with supporting data is requested.
REPLY This office stTM'parts t project proposal.
No comment.
Comments on this project are attached.
This office objects to the project as proposed.
Signed
Date
P.O. Box 27687, Raleigh, North Carolina 27611-7687 Telephone [phone]

9 North Carolina Wildlife Resources Comm
9
512 N. Salisbury Street, Raleigh, North Carolina 27604-1188, 919 p3391
Charles R. Fullwood, Executive Director vq
MEMORANDUM
TO: John R. Parker, 404 Coordinator
Division of Coastal Management
FROM: Dennis Stewart, Manager
Habitat Conservation Section
DATE: January 15, 1992
SUBJECT: U.S. Army Corps of Engineers Public Notice No.
199200576, request by Tennessee Valley Authority for a
permit to discharge fill material into the Hiwassee
River.in conjunction with the construction of a flow
reregulation weir downstream of Chatuge Dam, Clay
County.
The North Carolina Wildlife Resources Commission (NCWRC) has
reviewed the information provided by the U.S. Army Corps of
Engineers, and biological field staff are familiar with the
project site. These comments are provided in accordance with
provisions of the Clean Water Act of 1977 (33 U.S.C. 466 et
seq.), and the Fish and Wildlife Coordination Act (48 Stat. 401,
as amended; 16 U.S.C. 661=667d.).
The applicant is requesting a permit to construct a 140-foot
long, 50-foot wide, 8.25-foot high weir in the Hiwassee River
about 0.9 mile downstream of Chatuge Dam. The purpose of the
project is to enhance the coldwater fishery downstream of the dam
by aerating generation flows and providing a minimum
instantaneous flow in the river. The reregulation structure will
consist of two parts--a weir for regulation of minimum flows and
an infuser deck for aeration of releases. Five 19-inch diameter
valve-controlled pipes and three uncontrolled pipes will be
placed within the weir to pass a controlled discharge of 60 cubic
feet per second during nongeneration periods. Quantities of
material to be placed within the river channel are: 13,000
linear feet of 6-inch by 6-inch pressure treated timbers; 5,470
linear feet of 2-inch by 6-inch pressure treated timbers; 92 feet
of 18-inch diameter steel pipe; 5 cubic yards of cement grout;
450 cubic yards of rock fill; 27 tons of steel for reinforcement
and safety barriers; 5,000 square feet.of steel grating; and six
40-foot reinforced concrete beams. In addition, 47 cubic yards
.
r
Memo Page 2 January 15, 1992
of earth and 10 cubic yards of rock will be excavated from the
channel and deposited in an appropriate spoil area.
The Tennessee Valley Authority (TVA) has consulted the NCWRC
throughout the planning stages of this project. Recently the
NCWRC sent a letter of approval to the TVA through Mr. Jack
Davis, Manager of Navigation and System Modification Section in
charge of Reservoir Release Task Force, in which we expressed
support for this project (see attached). These modifications
will enhance habitat for trout in the tailwaters of Chatuge Dam,
and the NCWRC is pleased that the TVA is undertaking this
project.
The NCWRC recommends that the following stipulations be
implemented by the applicant in order to minimize adverse impacts
to``fisheries resources during construction:
.1) Construction must be accomplished'so that wet concrete
does not contact water entering or flowing in the
Hiwassee River. This will reduce the likelihood of
fish kills associated with weir construction.
2) Stringent erosion control measures should be
implemented where soil is disturbed and maintained
until project completion.
3) Temporary ground cover should be placed on bare
surfaces, including spoil piles, as soon as
construction is complete. Permanent vegetation in
these same areas must be established within 15 days of
project completion to provide long term erosion
control.
Thank you for the opportunity to review and comment on this
project. If we can be of further assistance, please advise.
DLS/lp
cc: Ms. Stephanie Goudreau, Mt. Region Habitat Biologist
Mr. Micky Clemmons, District 9 Fisheries Biologist
Mr. Joffrey Brooks, District 9 Wildlife Biologist
Mr. David Baker, USACOE, Asheville
Mr. Allen Ratzlaff, USFWS, Asheville
i-?r. John Dorney, DEM
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® North Carolina Wildlife Resources Commission
512 N.. Salisbury Street, Raleigh, North Carolina 27604-1188, 919-733-3391
Charles R. Fullwood, Executive Director
November 7, 1991
Mr. Jack L. Davis
Tennessee Valley Authority
400 West Summit Hill Drive
Knoxville, TN 37902
Dear Mr. Davis:
I have reviewed the Chatuge Reservoir tailwater improvement plan with Jim
Borawa and concur with TVAs plan to do the following:
1. Install an aerating regulation weir in Hiwassee River approximately
0.75 mile below Chatuge Dam.
2. Provide a 60 cfs minimum flow below the weir at all times by pulsing
the turbine at 12 hour intervals during nonoperative periods.
3. Purchase an approximately 9-acre tract of land adjoining the
Hiwassee River on the south side between the weir site and US 64
highway.
4. Construct minimal facilities (access and parking) to provide river
access for small boats. This site will be available to the NCWRC for a
long term lease agreement.
5. Provide assistance in constructing fish habitat improvements in the
vicinity of the purchased land.
6. Provide supplemental aeration to increase dissolved oxygen levels in
the pool behind the weir under minimum flow conditions.
7. Install a vented turbine when the existing turbine is replaced.
4*k A^
These changes will enhance the aquatic resources of the Hiwassee River in the vici ity of
Chatge Dam and will provide better angling opportunities. I appreciate fVA's
commitment to implementing an aggressive reservoir and tailwater improvement program
in North Carolina. '` -
Sincerely,
Fred A. Harris, Chief
Division of Boating and Inland Fisheries
FAH/gw
cc: J. C. Borawa
C. R. Guier
M. M. Clemmons

DEPARTMENT OF THE ARMY
WILMINGTON DISTRICT, CORPS OF ENGINEERS
P.O. BOX 1890
WILMINGTON, NORTH CAROLINA 28402-1890
IN REPLY REFER TO December 23, 1991
S: February 2
Regulatory Branch
Action ID. 199200576
Mr. John Dorney
Water Quality.Section
Division of Environmental Management
North Carolina Department of Environment,
Health and Natural Resources
Post Office Box 27687
Raleigh, North Carolina 27611-7687
Dear Mr. Dorney:
DEC 1991
WATO 1?9F]rt ?ggra Lily
Ch
Enclosed is.the application of the Tennessee Valley Authority, for
Department of the Army authorization and a State Water Quality Certification
to discharge fill material into the Hiwassee River 0.9 mile downstream of
Chatuge Dam in conjunction with the construction of a flow reregulation weir
near Shooting Creek, Clay County, North Carolina. Your receipt of this letter
verifies your acceptance"of a valid request for certification in accordance
with Section 325.2(b)(ii) of our administrative regulations.
We are considering authorizing the proposed activity pursuant to Section
404 of the Clean Water Act, and we have determined that a water quality
certification may be required under the provisions of Section 401 of the same
law; A Department of the Army permit will not be granted until the
certification has been obtained or waived.
In accordance with our administrative regulations, 60 days after receipt
of a request for certification is a reasonable time for State action.
Therefore, if you have not acted on the request by February 24, 1992, the
District Engineer will deem that waiver has occurred.
Questions or comments may be addressed to Mr. David Baker in our Asheville
Regulatory office at [phone].
Sincerely,
-9 G. Wayne Wright
Chief, Regulatory Branch
Enclosure
r
s
-2-
copy Furnished (without enclosure):
Mr.' John Parker
Division of Coastal Management
North Carolina Department of
Environment, Health and
Natural Resources
Post Office Box 27687
Raleigh, North Carolina 27611-7687

Tennessee Valley Authority, 400 West Summit Hill Drive, Knoxville, Tennessee 37902
November 27, 1991
Mr. Robert Johnson
Office. Manager
U.S. Army Corps of Engineers
37 Battery Park Avenue, Room No. 75
Asheville, North Carolina 28801
Dear Mr. Johnson:
SECTION 404 PERMIT APPLICATION FOR PROPOSED REREGULATION/AERATION WEIR
BELOW CHATUGE DAM
TVA requests a Section 404 permit to place fill material in the channel
of the Hiwassee River for construction of a reregulation weir at
approximately Hiwassee River mile 120.142, about 0.9 mile downstream of
Chatuge Dam (see Figure 1). The purpose of the weir is to increase
instantaneous minimum flows in the river and to aerate low dissolved
oxygen (DO) releases from the dam. This will help enhance the foodbase
along with improving the flow, depth, and DO conditions for the
downstream fisheries. The anticipated date for construction to begin is
April 1992 with completion by May 1993.
The reregulation structure will consist of two parts--a weir for
regulation of minimum flows and an infuser deck for aeration of
releases. The weir will consist of wood timber cribs filled with crushed
rock constructed 8.25 feet high and 140 feet long. The infuser deck will
extend from the top downstream edge of the weir wall to support columns
of either wood and reinforced concrete (option 1) or reinforced concrete
(option 2). In both options, the deck is covered with a steel grating.
Design of the weir abutments is based on 100-year flood levels plus 1
foot of freeboard. Five 19-inch diameter valve-controlled pipes and 3
uncontrolled pipes will be placed within the weir to pass a controlled
discharge of 60 cfs during nongeneration periods.

2
Mr. Robert Johnson
November 27, 1991
Preliminary estimates of quantities of material expected to, be placed in
the channel follow:
Weir
7400 linear feet of 6" x 6" pressure-treated timbers
5740 linear feet of 2" by 6" tongue-and-groove pressure-treated timbers
450 cubic yards of rockfill
92 linear feet of 18" schedule 40 steel pipe
10 cubic feet of cement grout
0.4 tons of steel reinforcement rods
915 linear feet of 5/8" steel rods
Infuser Deck Option 1
6000 linear feet of 6" x 6" pressure-treated timbers
85 cubic yards of concrete
120 cubic feet of cement grout
11.5 tons of steel reinforcement
Infuser Deck Option 2
140 cubic yards of concrete precast into slabs
88 cubic yards of concrete
130 cubic feet of cement grout
12.5 tons of steel reinforcement
Additional Decking Materials
5000 square feet of steel grating
6-18 LB44 precast beams (40' long)
11-tons steel tubing (3" x 3" x 5/16")
4 tons angle irons (6" x 4" x 1/2")
175 each 4" galvanized concrete anchors
In addition, approximately 47 cubic yards of earth and 10 cubic yards of
rock will be excavated from the channel, deposited in spoil area, and
reclaimed using best management practices.
i

3
Mr. Robert Johnson
November 27, 1991
Final design will depend on results from physical and mathematical model
studies, a stability analysis, and further investigations. Final design
drawings and quantities will be provided when complete.
The enclosed permit application includes ENG Form 4345 and a drawing
(Figure 1) showing the location, general plan, and sectional view of this
project. When the Environmental Decision Record is completed and
approved, we will forward a copy to you.
By copy of this letter, we request that the North Carolina Department of
Environmental Management certify this work pursuant to Section 404 of the
Clean Water Act.
If additional information is needed, please call Richard M. Shane at
[phone] in Knoxville, Tennessee.
Sincerely,
M. u4S60hmierbach, Manager
Environmental Quality
Enclosures
cc (Enclosures):
State of North Carolina Department
of Environment, Health and
Natural Resources
Division of Environmental Management
P.O. Box 27687
Raleigh, North Carolina 27611-7687
APPLICATION FOR DEPARTMENT OF THE ARMY PERMIT
(33 CFR 325) OM9 APPROVAL NO. 0702-0036
Expires 30 June 1992
Public reporting burden for this collection of information is estimated to average 5 hours per instructions, searching existing data sources, gathering and maintaining the data needed, and cop pletng and eve ngf the coollectiontof information. r wing
Applications for larger or more complex projects, or those in ecologically sensitive areas, will take longer. Send comments regarding this burden estimate or an
other aspect of this collection of information, including suggestions for reducing this burden, to Washington Headquarters Services, Directorate for Information
Operations and Reports, 1215 Jefferson Davis Highway, Suite 1204, Arlington, VA 22202-4302; and to the Office of information and Regulatory Affairs, Office
of Management and Budget, Washington, DC 20503.
The Department of the Army permit program is authorized by Section 10 of the Rivers and Harbors Act of 1899, Section 404 of the Clean Water Act and
Section 103 of the Marine, Protection, Research and Sanctuaries AcL These laws require permits authorizing activities in or affecting navigable waters of the
United States, the discharge of dredged or fill material into waters of the United States, and the transportation of dredged material for the purpose of dumping
into ocean waters. Information provided on this form will be used in evaluating the application fora permit. o it
public record through issuance of a public notice. Disclosure of the information requested is voluntary; Information in this application is made a matter of
communicate with the applicant and to evaluate the permit application. If necessary information is not provided, the data requested are necessary in order to
can a permit be issued. permit application cannot be processed nor
One set of original drawings or good reproducible copies which show the location and character of the proposed activity must be attached to this application
(see sample drawings and instructions) and be submitted to the District Engineer having jurisdiction over the location of the proposed activity. An application
that is not completed in full will be returned.
1. APPLICATION NUMBER (To be assigned by Corps)
Ae-hill_ -r v
l 1q.1-005-74-
2- NAME AND ADDRESS OF APPLICANT
Tennessee Valley Authority
400 Summit Hill Drive
Knoxville, TN 37902
Telephone no. during business hours
A/C ( ) (Residence)
A/C ( ) (Office)
DETAILED DESCRIPTION OF PROPOSED ACTIVITY
3. NAME, ADDRESS, AND TITLE OF AUTHORIZED AGENT
M. Paul Schmierbach, Manager
Environmental Quality Staff
Tennessee Valley Authority
400 Summit Hill Drive, Knoxville, TN 37902
Telephone no. during business hours
AIC ( ) IRelsidence)
ac ( 615 - is ar Ifice)
Statement of Authorization: I hereby designate and authorize
behalf as my agent in the to act in my
Processing of this permit application and to
furnish, upon request, supplemental information in support of the application.
SIGNATURE OF APPLICANT
DATE
? 4a. ACTIVITY
i The Tennessee Valley Authority requests a Section 404 Permit to place fill material
in the channel of the Hiwassee River at mile 120.142 in connection with the construction
of a flow reregulation weir.
s
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ab. PURPOSE
The purpose of the weir is to aerate generation flows coming from Chatuge Dam,
minimizing their impact due to low dissolved oxygen content. In addition, the
weir can provide a minimum instantaneous flow of 60 cfs in the river below Chatuge
Dam for enhancing the cold water fishery,
v??.?tanua ur- UHEUGED OR FILL MATERIAL
The weir will be of timber crib design with an infuser deck. Preliminary estimates
of quantities of material expected to be placed in the channel are 13,000 linear
feet of 6" x 6" pressure-treated timbers; 5,470 linear feet of 2" x 6" tongue-and-
groove pressure-treated timbers; 92 feet of 18" diameter steel pipe; 130 cubic feet
of cement grout; 450 cubic yards of rockfill; 27 tons of steel for reinforcement and
safety barriers; 5,000 square feet of steel grating; and six 40' reinforced concrete
,sir
beams. In addition, approximately 47 cubic vards of
a FORM 4345, Aug 89
will be excavated from the
best management practices.
earth and 10 cubic yards of rock
EDITION OF APR 86 IS OBSOLETE.' (Pruuwwrrt: -CECW-ON)
channel, deposited in the spoil area, or reclaimed using
5. NAMES AND ADDRESSES OF ADJOINING PROPERTY OWNERS. LESSEES, ETC., WHOSE PROPERTY ALSO ADJOINS THE WATERWAY
`The project site is within TVA's Chatuge Reservoir Reservation.
Y
•
6. WATERBODY AND LOCATION ON WATERBOOY WHERE ACTIVITY EXISTS OR IS PROPOSED
Hiwassee River mile 120.142
7. LOCATION ON LAND WHERE ACTIVITY EXISTS OR IS PROPOSED
ADDRESS: Chatuge Dam
STREET, ROAD. ROUTE OR OTHER DESCRIPTIVE LOCATION
Clay North Carolina
COUNTY STATE ZIP CODE
LOCAL GOVERNING BODY WITH JURISDICTION OVERSITE
8. Is any portion of the activity for which authorization is sought now complete? ? YES [ NO
11 answer is 'yes' give reasons, month and year the activity was completed. Indicate the existing work on the drawings.
9. List all approvals or certifications and denials received from other federal, interstate, state or local agencies lot any structures, construction, discharges or other
activities described in this application.
ISSUING AGENCY TYPE APPROVAL IDENTIFICATION NO. DATE OF APPLICATION DATE OF APPROVAL DATE OF DENIAL
State Water Quality certification will be requested from the North Carolina Department
of Environmental Management.
10. Application is hereby made for a permit or permits to authorize the activities described herein. I certify that I am familiar with the information contained in the
application, and that to the best of my knowledge and belief such information is true, complete, and accurate. I further certify that l possess the authority to
undertake the proposed activities or 1 am acting as the duly authorized agent of the applican$.
i 4APPC!SI ATU E OF T DATE SIGNATURE OF AGENT DATE
The application must be signed by the person who desires to undertake the proposed activity (applicant) or it may be signed by a duly
authorized agent if the statement in block 3 has been filled out and signed.
18 U.S.C. Section 1001 provides that: Whoever, in any manner within the jurisdiction of any department or agency of The United States
knowingly and willfully falsifies, conceals, or covers up by any trick, scheme, or device a material fact or makes any false, fictitious or fraudulent
statements or representations or makes or use any false writing or document knowing same to contain any Ialse fictittou3 or
fraudulent statement or entry, shall be fined not more than $10,000 a imprisoned not more than fives . 2- ... I,-"-
M1 _._ .__? Jww ?n wuw
rReveme or ENO FORM 4345)
INFUSION WEIR
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;UE & ? EL 1803.0
:RS, TYP ? 45 -FLOW Yf!qx p F-1
FLOAT VALVE
CONTROL PIPE
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CHUTE SPILLWAY
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f / / J L,r 1 \ '1 RESERVaR
. _ _\ I J J ? ? /f 1 \ ? piATUCE DAA!
KEY PLAN
DR rYP APPROX ROCK SURFACE.
EL 1792.51
HANDRAIL, TYP
- - EL 1809.75
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" 2" x 6" TONGUE &
PRESSURE
TREA TED 17MBERS, TYP
.?F LAW
NOT TO SCALE
N
WEIR OU TLINE,
SL"E A-A o o HIWASSEE RIVER MI. 120.142
cn .,
INFUSION WEIR
MINIMUM FLOW -
APPROX ROCK (RIPRAP 12 HOURS @ 60 CFS
SURFACE, EL 1792.51
:CxING C- CHATUGE PROJECT
TYP @ ABUTUENT
TENNESSEE VALLEY AUTHORITY
FIGURE 1

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(1.300 CFS) TREATED AMBERS
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State of North Carolina
Department of Environment, Health, and Natural Resources
Asheville Regional Office
James G. Martin, Governor
William W. Cobey, Jr., Secretary
DIVISION OF ENVIRONMENTAL MANAGEMENT
WATER QUALITY SECTION
January 27, 1992
MEMORANDUM
TO: John Dorney
THROUGH: Forrest R. Westall
Water Quality Sup or
FROM: Kerry S. Becker . 1/3
SUBJECT: 401 Certification Project: TVA Chatuge Dam
Action I.D. #91840
Ann B. Orr
Regional Manager
On January 7, 1992 I investigated the area where TVA was proposing to
locate their reregulation/aeration weir. The stream banks are steep
and about 8 feet high on the average, thus, they should be able to
accomodate the increased water level. The land adjacent to the portion
of the river being dammed is primarily used for agricultural purposes.
No wetlands are involved.
Issuance of a water quality certification for this project is
recommended..
Interchange Building, 59 Woodfin Place, Asheville, N.C. 28801 • Telephone [phone]
An Equal Opportunity Affirmative Action Employer
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1

Tennessee Valley Authority, 400 West Summit Hill Drive. Knoxville.
November 27, 1991
t
Mr. Robert Johnson
Office Manager
U.S. Army Corps of Engineers
37 Battery Park Avenue, Room No. 75
Asheville, North Carolina 28801
Dear Mr. Johnson:
c?)
DEC a
SECTION 404 PERMIT APPLICATION FOR PROPOSED REREGULATION/AERATION WEIR
BELOW CHATUGE DAM
TVA requests a Section 404 permit to place fill material in the channel
of the Hiwassee River for construction of a reregulation weir at
approximately Hiwassee River mile 120.142, about 0.9 mile downstream of
Chatuge Dam (see Figure 1). The purpose of the weir is to increase
instantaneous minimum flows in the river and to aerate low dissolved
oxygen (DO) releases from the dam. This will help enhance the foodbase
along with improving the flow, depth, and DO conditions for the
downstream fisheries. The anticipated date for construction to begin is
April 1992 with completion by May 1993.
The reregulation structure will consist of two parts--a weir for
regulation of minimum flows and an infuser deck for aeration of
releases. The weir will consist of wood timber cribs filled with crushed
rock constructed 8.25 feet high and 140 feet long. The infuser deck will
extend from the top downstream edge of the weir wall to support columns
of either wood and reinforced concrete (option 1) or reinforced concrete
(option 2). In both options, the deck is covered with a steel grating.
Design of the weir abutments is based on 100-year flood levels plus 1
foot of freeboard. Five 19-inch diameter valve-controlled pipes and 3
uncontrolled pipes will be placed within the weir to pass a controlled
discharge of 60 cfs during nongeneration periods.
M1 ? ?/". 4R, i?1 7 .f
`z,_ 1 .
.01 - k
Robert Johnson
.aovember 27, 1991
Preliminary estimates of quantities of material expected to be placed in
the channel follow:
Weir
7400 linear feet of 6" x 6" pressure-treated timbers
5740 linear feet of 2" by 6" tongue-and-groove pressure-treated timbers
450 cubic yards of rockfill
92 linear feet of 18" schedule 40 steel pipe
10 cubic feet of cement grout
0.4 tons of steel reinforcement rods
915 linear feet of 5/8" steel rods
Infuser Deck Option 1
6000 linear feet of 6" x 6" pressure-treated timbers
85 cubic yards of concrete
120 cubic feet of cement grout
11.5 tons of steel reinforcement
Infuser Deck Option 2
140 cubic yards of concrete precast into slabs
88 cubic yards of concrete
130 cubic feet of cement grout
12.5 tons of steel reinforcement
Additional Decking Materials
5000 square feet of steel grating
6-18 LB44 precast beams (40' long)
11 tons steel tubing (3" x 3" x 5/16")
4 tons angle irons (6" x 4" x 1/2")
175 each 4" galvanized concrete anchors
In addition, approximately 47 cubic yards of earth and 10 cubic yards of
rock will be excavated from the channel, deposited in spoil area, and
reclaimed using best management practices.
e
..: 3
Mr. Robert Johnson
November 27, 1991
Final design will depend on results from physical and mathematical model
studies, a stability analysis, and further investigations. Final design
drawings and quantities will be provided when complete.
The enclosed permit application includes ENG Form 4345 and a drawing
(Figure 1) showing the location, general plan, and sectional view of this
project. When the Environmental Decision Record is completed and
approved, we will forward a copy to you.
By copy of this letter, we request that the North Carolina Department of
Environmental Management certify this work pursuant to Section 404 of the
Clean Water Act.
If additional information is needed, please call Richard M. Shane at
[phone] in Knoxville, Tennessee.
Sincerely,
M. aul S hmierbach, Manager
Environmental Quality
Vl'cc (Enclosures):
State of North Carolina Department
of Environment, Health and
Natural Resources
Division of Environmental Management
P.O. Box 27687
Raleigh, North Carolina 27611-7687
E closures
DEPARTMENT OF THE ARMY ?L`` •? ?
Wilmington District, Corps of Engins
Post Office Box 1890 C? "T'?
Wilmington, North Carolina 28402- x$90,, 't
n r' r
member 19,..1991
Action ID. 199200576
PUBLIC NOTICE
The TENNESSEE VALLEY AUTHORITY, represented by MR. PAUL SCHMIERBACH,
MANAGER, ENVIRONMENTAL QUALITY STAFF, 400 SUMMIT HILL DRIVE, KNOXVILLE,
TENNESSEE 37902 has applied for a Department of the Army (DA) permit TO
DISCHARGE FILL MATERIAL INTO THE HIWASSEE RIVER AT MILE 120.142 IN CONJUNCTION
WITH THE CONSTRUCTION OF A FLOW REREGULATION WEIR LOCATED DOWNSTREAM OF THE
CHATUGE DAM NEAR SHOOTING CREEK, Clay County, North Carolina.
The following description of the work is taken from data provided by the
applicant. Plans submitted with the application show the proposed
construction of a 140-foot-long, 50-foot-wide, 8.25-foot-high weir about 0.9
mile downstream of the dam. The reregulation structure will consist of two
parts--a weir for regulation of minimum flows and ari infuser deck for aeration
of releases. The infuser deck, which will be covered with steel grating, will
extend from the top downstream edge of the weir wall to wood and reinforced
concrete support columns. Five 19-inch diameter valve-controlled pipes and
three uncontrolled pipes will be placed within the weir to pass a controlled
discharge of 60 cfs during nongeneration periods. Quantities of material to
be placed within the river channel are: 13,000 linear feet of 6"x 6" pressure
treated timbers; 5,470 linear feet of 2-inch by 6-inch pressure treated
timbers; 92 feet of 18-inch diameter steel pipe; 5 cubic yards of cement
grout; 450 cubic yards of rock fill; 27 tons of steel for reinforcement and
safety barriers; 5,000 square feet of steel grating; and six 40-foot
reinforced concrete beams. In addition, approximately 47 cubic yards of earth
and 10 cubic yards of rock will be excavated from the channel and deposited in
an appropriate spoil area. The project purpose is to aerate generation flows
coming from Chatuge Dam, minimizing their impact due to low dissolved oxygen
content; and to provide a minimum instantaneous flow in the river for
enhancing the cold water fishery. Plans showing the work are included with
this public notice.
The State of North Carolina will review this public notice to determine
the need for the applicant to obtain any required State authorization. No DA
permit will be issued until the coordinated State viewpoint on the proposal
has been received and reviewed by this agency, nor will a DA permit be issued
until the North Carolina Division of Environmental Management (DEM) has
determined the applicability of a Water Quality Certificate as required by'PL
92-500.
This application is being considered pursuant to Section 404 of the Clean
Water Act (33 U.S.C. 1344). Any person may request, in writing within the
comment period specified in the notice, that a public hearing be held to
consider this application. Requests for public hearing shall state, with
particularity, the reasons for holding a public hearing.

-2-
The District Engineer has consulted the latest published version of the
National Register of Historic Places for the presence or absence of registered
properties, or properties listed as being eligible for inclusion therein, and
this worksite is not registered property or property listed as being eligible
for inclusion in the Register. Consultation of the National Register
constitutes the extent of cultural resource investigations by the District
Engineer, and he is otherwise unaware of the presence of such resources.
Presently, unknown archeological, scientific, prehistorical, or historical
data may be lost or destroyed by work under the requested permit.
The District Engineer, based on available information, is not aware that
the proposed activity will affect species, or their critical habitat,
designated as endangered or threatened pursuant to the Endangered Species Act
of 1973.
The decision whether to issue a permit will be based on an evaluation of
the probable impacts, including cumulative impacts, of the proposed activity
and its intended use on the public interest. Evaluation of the probable
impacts which the proposed activity may have on the public interest requires a
careful weighing of all those factors which become relevant in each particular
case. The benefits which reasonably may be expected to accrue from the
proposal must be balanced against its reasonably foreseeable detriments. The
decision whether to authorize a proposal, and if so the conditions under which
it will be allowed to occur, are therefore determined by the outcome of the
general balancing process. That decision should reflect the national concern
for both protection and utilization of important resources. All factors which
may be relevant to the proposal must be considered including the cumulative
effects thereof. Among those are conservation, economics, aesthetics, general
environmental concerns, wetlands, cultural values, fish and wildlife values,
flood hazards and flood plain values (in accordance with Executive Order
11988), land use, navigation, shore erosion and accretion, recreation, water
supply and conservation, water quality, energy needs, safety, food and fiber
production, mineral needs, considerations of property ownership, and, in
general, the needs and welfare of the people. For activities involving the
placement of dredged or fill materials in waters of the United States, a
permit will be denied if the discharge that would be authorized by such permit
would not comply with the Environmental Protection Agencies' 404(b)(1)
guidelines. Subject to the preceding sentence and any other applicable
guidelines or criteria, a permit will be granted unless the District Engineer
determines that it would be contrary to the public interest.
The Corps of Engineers is soliciting comments from the public; Federal,
State and local agencies and officials; Indian Tribes and other interested

-3-
parties in order to consider and evaluate the impacts of this proposed
activity. Any comments received will be considered by the Corps of Engineers
to determine whether to issue, modify, condition or deny a permit for this
proposal. To make this decision, comments are used to assess impacts on
endangered species, historic properties, water quality, general environmental
effects and the other public interest factors listed above. Comments are used
in the preparation of an Environmental Assessment and/or an Environmental
Impact Statement pursuant to the National Environmental Policy Act. Comments
are also used to determine the need for a public hearing and to determine the
overall public interest of the proposed activity.
Generally, the decision whether to issue this DA permit will not be made
until the North Carolina Division of Environmental Management (DEM) issues,
denies, or waives State certification required by section 401 of the Clean
Water Act. The DEM considers whether or not the proposed activity will comply
with Sections 301, 302, 306, and 307 of the Clean Water Act. The application
and this public notice for the DA permit serve as application to the DEM for
certification.
Additional information regarding the Clean Water Act certification may be
reviewed at the offices of the Environmental Operations Section, North
Carolina Division of Environmental Management, Salisbury Street, Archdale
Building, Raleigh, North Carolina. Copies of such materials will be furnished
to any person requesting copies upon payment of reproduction costs.
The DEM plans to take final action in the issuance of the Clean Water Act
certification on or after January 13, 1992.
All persons desiring to make comments regarding the application for Clean
Water Act certification should do so in writing delivered to the North
Carolina Division of Environmental Management, Post Office Box 27687, Raleigh,
North Carolina 27611-7687, on or before January 6, 1992, Attention: Mr. John
Dorney.
Written comments pertinent to the proposed work, as outlined above,
will be received in this office, Attention: David Baker, until 4:15 p.m.,
January 17, 1992, or telephone [phone].
INFUSION WEIR
H. W. 1805.5 4??+?cE ?gg? N
(1300 CFS) 119 WA A41LE
5•-On _ 1840^120
'UE & ?Et 1803.0
RS, TYP
LOW ?
F-1
FLOAT VALVE, --
CONTROL PIPE
ONL Y, 5 REOD j L
1 Q ? i .-t l CHUTE SPILLWAY
EL 17961 r J/? 1840-1
j CHATUGE
/- 1
Ell I
CHATUGE DAM RESERVOIR
KEY PLAN
PR, TYP APPROX ROCK SURFACE,
EL 1792.51
15'-0"
ANDRAIL, TYPE
WEIR OUTLINE,
SEE A-A
2" x 6" TONGUE &
GROOVE PRESSURE
TREATED TIMBERS, TYP
N
O O
?- APPROX ROCK `RIPRAP
SURFACE, EL 1792.5±
EKING C- C
TYP ® ABUTMENT
7E 1809.75
..FLOW
NOT TO SCALE
HIWASSEE RIVER MI. 120.142
INFUSION WEIR
MINIMUM FLOW -
12 HOURS ® 60 CFS
CHATUGE PROJECT
TENNESSEE VALLEY AUTHORITY
FIGURE I

40'-O
?r EL 180,
STEEL
SAFEn
BARRIE
z
O'
I
O
II
m
I
N
SHIM AS REOD, TYP
A-A
5
•2" x 6" TONC
GROOM IIMBE

ANCHO
H,
'KW AMBERS VARIES
,- - GRA TING,
! 17518.5 6" x 6" PRESSURE
00 CFS) TREATED AMBERS, TYP2
GIRDER, TYP
ROCKFXL, TYP
C 18"0 PIPER
COLUMN, TYP _
12" 12"
GRA TING,
T)P r
12" 12
TYP
GRA TING,
TYP
EL 1804.9± I I I / EL 1804.9±
18LB4 s • ? ° 18LB48 • a • ? °
? ? ? ? s
u
EL 1803.0 _ EL 1803.04
EL 1802.50 1-
'a
. EL 1802.25- °
? s•
EL 1801.17 ?° ? e
EL 1800.92 s ° s• s
6" x 6" PRESSURE
TREATED TIMBER, TYP PRECAST
D- Z7 CONC SLAB
TYP CHIMNEY & DECKING B- B
(PRESSURE TREA TED TIMBER) OP 77ONAL CHIMNEY & DEC
(PRECAST CONC SLAB)
55'-0" 15'-0"
TYP TYP
PPROX SHORELINE
t
o
t +--+-I-I-+-+-ICI-+--+ C
A
•l
GIRDER BELOW, TYP - - -
GRA TING
R
0
t
to
40'-0" 10'-0"
3' WIDE x 40' LONG
CHIMNEY, 4 REQD -
A
L
+t I
? APPROX SHORELINE

A

0
18"0 UNCONTROLLED Z
= PIPE, 3 REQD
?_= 1 0 0
r
GRA TING -FLOW
tL n

W
B = 2" x 6" TONGUE
cl'
& GROOVE PRESSURE

Q
TREA TED TIMBERS, TYP m
00
_ t
= i C'4
LB 18"0 CONTROL ?
PIPE, 5 REQD

GRA TING A

l
A
-I- i- -I- -I - I- -i- -F -I- I-
PLAN
s
1r ??e Y??u
State of North Carolina
Department of Environment, Health, and Natural Resources
Division of Coastal Management
225 North McDowell Street • Raleigh, North Carolina 27602
James G. Martin, Governor
William W. Cobey, Jr., Secretary
January 3, 1992
MEMORANDUM
T0: Dr. George T. Everett, Director
Division of Environmental Management
FROM: John R. Parker, Jr.
Inland "404" Coordinator
SUBJECT: "404" Project Review
Roger N. Schecter
Director
The attached U.S. Army Corps of Engineers. Public Notice for Action No. 199200576
dated December 19, 1991 describing a project proposed by The Tennpcm Valley
Authority is being circulated to interested state agencies for comments on
applicable Section 404 and/or Section 10 permits.
Please indicate below your agency's position or viewpoint on the proposed project
and return this form by Januax-y 17, 1992. If you have any questions regarding the
proposed project, please contact me at 733-2293. When appropriate, in-depth
comments with supporting data is requested.
REPLY
This office supports the project proposal.
No comment.
Comments on this project are attached.
This office objects to the project as proposed.
Signed
Date
P.O. Box 27687, Raleigh, North Carolina 27611-7687 Telephone [phone]
f %
DEPARTMENT OF THE ARMY
Wilmington District, Corps of Engineers
Post Office Box 1890
Wilmington, North Carolina 28402-1890
Action ID. 199200576
December 19, 1991
PUBLIC NOTICE
The TENNESSEE VALLEY AUTHORITY, represented by MR. PAUL SCHMIERBACH,
MANAGER, ENVIRONMENTAL QUALITY STAFF, 400 SUMMIT HILL DRIVE, KNOXVILLE,
TENNESSEE 37902 has applied for a Department of the Army (DA) permit TO
DISCHARGE FILL MATERIAL INTO THE HIWASSEE RIVER AT MILE 120.142 IN CONJUNCTION
WITH THE CONSTRUCTION OF A FLOW REREGULATION WEIR LOCATED DOWNSTREAM OF THE
CHATUGE DAM NEAR SHOOTING CREEK, Clay County, North Carolina.
The following description of the work is taken from data provided by the
applicant. Plans submitted with the application show the proposed
construction of a 140-foot-long, 50-foot-wide, 8.25-foot-high weir about 0.9
mile downstream of the dam. The reregulation structure will consist of two
parts--a weir for regulation of minimum flows and an infuser deck for aeration
of releases. The infuser deck, which will be covered with steel grating, will
extend from the top downstream edge of the weir wall to wood and reinforced
concrete support columns. Five 19-inch diameter valve-controlled pipes and
three uncontrolled pipes will be placed within the weir to pass a controlled
discharge of 60 cfs during nongeneration periods. Quantities of material to
be placed within the river channel are: 13,000 linear feet of 6"x 6" pressure
treated timbers; 5,470 linear feet of 2-inch by 6-inch pressure treated
timbers; 92 feet of 18-inch diameter steel pipe; 5 cubic yards of cement
grout; 450 cubic yards of rock fill; 27 tons of steel for reinforcement and
safety barriers; 5,000 square feet of steel grating; and six 40-foot
reinforced concrete beams. In addition, approximately 47 cubic yards of earth
and 10 cubic yards of rock will be excavated from the channel and deposited in
an appropriate spoil area. The project purpose is to aerate generation flows
coming from Chatuge Dam, minimizing their impact due to low dissolved oxygen
content; and to provide a minimum instantaneous flow in the river for
enhancing the cold water fishery. Plans showing the work are included with
this public notice.
The State of North Carolina will review this public notice to determine
the need for the applicant to obtain any required State authorization. No DA
permit will be issued until the coordinated State viewpoint on the proposal
has been received and reviewed by this agency, nor will a DA permit be issued
until the North Carolina Division of Environmental Management (DEM) has
determined the applicability of a Water Quality Certificate as required by PL
92-500.
This application is being considered pursuant to Section 404 of the Clean
Water Act (33 U.S.C. 1344). Any person may request, in writing within the
comment period specified in the notice, that a public hearing be held to
consider this application. Requests for public hearing shall state, with
particularity, the reasons for holding a public hearing.

V
-2-
The District Engineer has consulted the latest published version of the
National Register of Historic Places for the presence or absence of registered
properties, or properties listed as being eligible for inclusion therein, and
this worksite is not registered property or property listed as being eligible
for inclusion in the Register. Consultation of the National Register
constitutes the extent of cultural resource investigations by the District
Engineer, and he is otherwise unaware of the presence of such resources.
Presently, unknown archeological, scientific, prehistorical, or historical
data may be lost or destroyed by work under the requested permit.
The District Engineer, based on available information, is not aware that
the proposed activity will affect species, or their critical habitat,
designated as endangered or threatened pursuant to the Endangered Species Act
of 1973.
The decision whether to issue a permit will be based on an evaluation of
the probable impacts, including cumulative impacts, of the proposed activity
and its intended use on the public interest. Evaluation of the probable
impacts which the proposed activity may have on the public interest requires a
careful weighing of all those factors which become relevant in each particular
case. The benefits which reasonably may be expected to accrue from the
proposal must be balanced against its reasonably foreseeable detriments. The
decision whether to authorize a proposal, and if so the conditions under which
it will be allowed to occur, are therefore determined by the outcome of the
general balancing process. That decision should reflect the national concern
for both protection and utilization of important resources. All factors which
may be relevant to the proposal must be considered including the cumulative
effects thereof. Among those are conservation, economics, aesthetics, general
environmental concerns, wetlands, cultural values, fish and wildlife values,
flood hazards and flood plain values (in accordance with Executive Order .
11988), land use, navigation, shore erosion and accretion, recreation, water
supply and conservation, water quality, energy needs, safety, food and fiber
production, mineral needs, considerations of property ownership, and, in
general, the needs and welfare of the people. For activities involving the
placement of dredged or fill materials in waters of the United States, a
permit will be denied if the discharge that would be authorized by such permit
would not comply with the Environmental Protection Agencies' 404(b)(1)
guidelines. Subject to the preceding sentence and any other applicable
guidelines or criteria, a permit will be granted unless the District Engineer
determines that it would be contrary to the public interest.
The Corps of Engineers is soliciting comments from the public; Federal,
State and local agencies and officials; Indian Tribes and other interested

?i
-3-
parties in order to consider and evaluate the impacts of this proposed
activity. Any comments received will be considered by the Corps of Engineers
to determine whether to issue, modify, condition or deny a permit for this
proposal. To make this decision, comments are used to assess impacts on
endangered species, historic properties, water quality, general environmental
effects and the other public interest factors listed above. Comments are used
in the preparation of an Environmental Assessment and/or an Environmental
Impact Statement pursuant to the National Environmental Policy Act. Comments
are also used to determine the need for a public hearing and to determine the
overall public interest of the proposed activity.
Generally, the decision whether to issue this DA permit will not be made
until the North Carolina Division of Environmental Management (DEM) issues,
denies, or waives State certification required by Section 401 of the Clean
Water Act. The DEM considers whether or not the proposed activity will comply
with Sections 301, 302, 306, and 307 of the Clean Water Act. The application
and this public notice for the DA permit serve as application to the DEM for
certification.
Additional information regarding the Clean Water Act certification may be
reviewed at the offices of the Environmental Operations Section, North
Carolina Division of Environmental Management, Salisbury Street, Archdale
Building, Raleigh, North Carolina. Copies of such materials will be furnished
to any person requesting copies upon payment of reproduction costs.
The DEM plans to take final action in the issuance of the Clean Water Act
certification on or after January 13, 1992.
All persons desiring to make comments regarding the application for Clean
Water Act certification should do so in writing delivered to the North
Carolina Division of Environmental Management, Post Office Box 27687, Raleigh,
North Carolina 27611-7687, on or before January 6, 1992, Attention: Mr. John
Dorney.
Written comments pertinent to the proposed work, as outlined above,
will be received in this office, Attention: David Baker, until 4:15 p.m.,
January 17, 1992, or telephone [phone].
n

5._On H. W. 1805.5

(1300 CFS)
;UE &
TYP EL 1803.0
OW
n

FLOAT VALVE,
CONTROL PIPE
ONLY, 5 READ
I

EL 1796±

)R, TYP -APPROX ROCK SURFACE,
EL 1792.5±
-,-
ANDRAIL, TYPE
2" x 6" TONGUE &
GROOVE PRESSURE
7REA TED TIMBERS, TYP
WEIR OUTLINE,
SEE A-A
v
119`
WA MILE
?g40?120)

INFUSION WEIR V
? N

^?/??? f L
(? ?t l CHUTE SPILLWAY
1840-1 ?CHAWE
CHATEIGE DAM RESERVOIR
KEY PLAN
15'-0"
N
W
O O
APPROX ROCK \-RIPRAP
SURFACE, EL 1792.5±
,KING C- C
TYP ® ABUTMENT
1809.75
FL OW
NOT TO SCALE
HIWASSEE RIVER MI. 120.142
INFUSION WEIR
MINIMUM FLOW -
12 HOURS © 60 CFS
CHATUGE PROJECT
TENNESSEE VALLEY AUTHORITY
FIGURE I
40'-O lo'-0
5'-0"
1yN AMBERS VARIES
-SPCG
EL 1803GRA ANG. TYPE 1 x 6` TONG
GROOVE ilMBE
STEEL
SAFEn
BARRI£
1798.5 6" x 6" PRESSURE
)0 CFS) TREATED AMBERS, TYF?
GIRDER, TYP
ROCKFILL, TYP
F 18"0 PIPEN,
COLUMN, TYP
SHIM AS REOD, TYP
A-A
12" 12"
£L 1804.9f
18LB44 ? • s
?
EL 1803.0 °
EL 1802.50
12" 12"
GRA TING,
T)P
EL 1804.91
18LB48 --\ • e
., e
t ?
EL 1803.0 °
EL 1802.25- °
ANCHO
H,
GRA TING,
TYP
s e
e s
?a e
EL 1801.17 e ° e
EL 1800.92
6" x 6" PRESSURE
TREATED 17MBEA, TYP PRECAST
B- B CONC SLAB
TYP CHIMNEY & DECKING B- B
(PRESSURE TREA TED TIMBER) OPTIONAL CHIMNEY & DEC
(PRECAST CONC SLAB)
,. i ,
PPROX SHORELINE
c
0
i
GIRDER BELOW, TYP
55'-0" 15'-0"
TYP TYP
E I I I I
-I- -f -1- F- + -I -1 CI- I- -F C
GRAZING
3' WIDE x 40' LONG
CHIMNEY, 4 REOD -
0
APPROX SHORELINE
A
L

;H
3 .
O
1870 UNCONTROLLED Z 1Z.,
PIPE, 3 REOD f

GRA 11NG -FLOW
-

B = 2" x 6" TONGUE
& GROOVE PRESSURE a
Q
TREA TED TIMBERS, TYP m

- N
LB 18"0 CONTROL
PIPE, 5 REOD

GRA TING
l A
:313 U

-I- f- -F -I - F- -I- -F -I- F- ?'
PLAN