20230477 Ver 1_USACE Permit_20231218

DEPARTMENT OF THE ARMY
U.S. ARMY CORPS OF ENGINEERS, WILMINGTON DISTRICT
ASHEVILLE REGULATORY FIELD OFFICE
151 PATTON AVENUE ROOM 208
ASHEVILLE NC 28801
December 18, 2023
Regulatory Program/Division
Darin Prosser
Metropolitan Sewerage District of Buncombe County
510 Riverview Drive
Asheville, NC 28806
Via Email: [e-mail]
Dear Mr./Ms. Prosser:
This letter is in response to the Pre -Construction Notification (PCN) you submitted to
the Wilmington District, Asheville Regulatory Field Office on March 29, 2023, for a
Department of the Army Nationwide permit (NWP) verification. This project has been
assigned the file number 2021-01395 and is known as Carrier Bridge Pump Station
Replacement Protect. This file number should be referenced in all correspondence
concerning this project.
A review of the information provided indicates that the proposed work would include
the construction of new pump station, replacement of the existing influent gravity sewer
and replacement of existing force main. The project area for this determination includes
approximately 300 acres area which is illustrated on the enclosed site plans/maps. The
project/review area is located generally along and crossing the French Broad River near
Amboy Road and Lyman Street intersection and along Amboy Road at Carrier Park, at
Latitude 35.573049 and Longitude-82.565282; in Asheville, Buncombe County, North
Carolina.
We have determined that the proposed work is authorized by Nationwide Permit #58
pursuant to authorities under Section 10 of the Rivers and Harbors Act of 1899 (33
U.S.C. § 403), and Section 404 of the Clean Water Act (33 U.S.C. § 1344). This permit
authorizes the temporary dewatering of the French Broad River associated with
installation a 36-inch force main (North Crossing) and a 60-inch force main (South
Crossing). This authorization also includes two temporary culvert crossings of unnamed
tributaries that total 93 linear feet (68 linear feet and 25 linear feet respectively)
deaendina on the cofferdam construction desian chosen.
The proposed work must be accomplished in strict accordance with the general
permit conditions, any regional conditions, the special conditions listed in this letter, the
application materials, and the enclosed plans. If the extent of the project area and/or
nature of the authorized impacts to waters are modified, a revised PCN must be

submitted to this office for written approval before work is initiated. Any violation of
permit conditions or deviation from your submitted plans may subject the permittee to
enforcement action.
This verification is valid until March 15, 2026, unless prior to this date the subject
NWP(s) is suspended, revoked, or is modified such that the activity no longer complies
with the terms and conditions of this NWP. If you commence or are under contract to
commence this activity before the date that the relevant NWP is modified or revoked,
you will have 12 months from the date of the modification or revocation of the NWP to
complete the activity under the present terms and conditions of this NWP.
Special Conditions:
1. In order to mitigate adverse effects to federally listed endangered species with this
project, the permittee will implement the Terms and Conditions and Reasonable and
Prudent Measures of the enclosed Biological Opinion (dated December 14, 2023).
2. The permittee shall implement the enclosed River Safety Plan (dated March 28, 2023)
prior to any work occurring in and/or above the French Broad River.
3. Prior to any precipitation events, the permittee shall determine if high water levels are
expected and remove any equipment that is on the cofferdams prior to expected high
water, or at the end of the work -day if high water is expected prior to the next work -day.
Following all storm events equal to or greater than a bankfull event, the permittee shall
inspect the cofferdams and riverbanks for signs of erosion or unstable conditions. Any
debris caught on the temporary cofferdams shall be immediately removed and any areas
of erosion shall be immediately stabilized.
4. Any bank erosion/instability surrounding the construction footprint at the North and South
French Broad River Crossings will be assessed and coordinated with the Corps prior to
developing a plan to remediate any project induced bank erosion. A separate/additional
Section 10/404 authorization may be required for future bank stabilization activities.
5. Riverbank areas cleared of vegetation for installation of sewer line which will not be part
of permanently maintained easement, shall be stabilized utilizing native vegetation and
bio-engineering methods versus hard stabilization where practicable.
6. Prior to authorized impacts occurring, the permittee will provide plans detailing the
chosen cofferdam construction method to the Corps for review within 30 days before
planned construction/de-watering begins.
7. Prior to impacts occurring, a pre -construction meeting will be held between the
permittee's contractors and the Corps' Asheville Regulatory Field Office staff.
This NWP verification does not preclude the necessity to obtain any other Federal,
State, or local permits, licenses, and/or certifications, which may be required.

If you have any questions related to this verification or have issues accessing
documents referenced in this letter, please contact Amanda Fuemmeler, Project
Manager of the Asheville Regulatory Field Office at 828-271-7980 ext. 4225, by mail at
the above address, or by email at amanda.jones usace.army.mil. Please take a
moment to complete our customer satisfaction survey located at
https://requlatorV.ops.usace.army.miI/customer-service-survey.
Sincerely,
Amanda Fuemmeler
Project Manager
Enclosures
Cc (w/enclosures)
Eric Mularski, HDR Engineering, Inc. of the Carolinas (via [e-mail])

Compliance Certification Form
Action ID Number: 2021-01395
County: Buncombe
Permittee: Metropolitan Sewerage District of Buncombe County, Darin Prosser
Project Name: Carrier Bridge Pump Station Replacement Project
Date Verification Issued: 12/18/2023
Project Manager: Amanda Fuemmeler
Upon completion of the activity authorized by this permit and any mitigation required by
the permit, sign this certification and return it to the following email address:
amanda.jones(cb-usace.army.mil
Please note that your permitted activity is subject to a compliance inspection by a U. S.
Army Corps of Engineers representative. Failure to comply with any terms or conditions
of this authorization may result in the Corps suspending, modifying or revoking the
authorization and/or issuing a Class I administrative penalty, or initiating other
appropriate legal action.
I hereby certify that the work, and mitigation (if applicable), authorized by the above
referenced permit has been completed in accordance with the terms and conditions of
the said permit including any general or specific conditions.
Date Authorized Work Started:
Completed:
Describe any deviations from permit (attach drawing(s) depicting the deviations):
*Note: The description of any deviations on this form does not constitute approval by the Corps.
Signature of Permittee
Date

1. Figures and Tables
Juno
LEGEND 'Elk Mountain
= Action Area
DkTA 90URCE: E2R1Abed bpoUmpNE
E-p
N
Courtly
DU C ub Df
A=111a
n
0 1 I kl(m - I MW Buie Caurdy, NC
Montford Hills
Crowne Plaza
Ten N 5 & Gd,
Resort
-63
Deaver View Eus'jng ,:artier Bridge
lump -,L-Aon
West Asheville
KcniW)rth
Sulphur
Springs
West Asheville
Malvern Hills
Carrie
C
�oj ZY T
Shiloh
Ige
D:A:1
Biltmore
sc,rr s rradfey ailtmore Fom.Forest
fovi �97 4 Venable . Co Ye CourvtryClub
247 ?ft
Valley Springs
Bent Creek
VISID1 CARRIER BRIDGE PUMP STATION REPLACEMENT PROJECT
N
PROJECT LOCATION MAP
O
Figure -1
MLGOICAL A42EZIMENT
Figure 1. Proposed action area within the greater West Asheville area.

o vnm'cr_�o� r��a�aiow��,rrm� Iwo' �ro�_o�mus� at imva MLOGIOAL AOSE"MENT
Figure 2. North and South River Crossing areas.
041

Figure 3. Proposed site access route.
ME
SIOLO@ICAL ASM ESMENT

LEGEND
Impact Number: S1
Construction Work Area
Impact Type: Fill (Cofferdam)
Impact Duration: Temporary
Stream Type: Perennial (French Broad River) Tah
Proposed Pump Station
p p
Impact Area: 100 Linear Feet (0.92 Acres)
- Existing Pump Station
Proposed Cofferdams (stage 1)
® Proposed Cofferdams (stage 2)
`
Impact Number: S2
Impact Type: Dewatering/Excavation (Pipe Installation)
Proposed 60-inch Gravity Sewer
Impact Duration: Temporary
Stream Type: Perennial (French Broad River)
Proposed 60-inch Gravity Sewer
Impact Area: 50 Linear Feet (0.30Acres)
Replacement
Proposed 36-inch Force Mains
Proposed 54-inch Gravity Sewer
Rehabilitation
Proposed Access Route
No steam impacts anticipated. This proposed
Delineated Wetlands
footprint is for the rock cofferdam option which
has a wider base than the sheet pile cofferdam
Delineated Streams/Rivers'
option. A temporary culvert may be placed in the
tributary at its confluence with the river to ensure l
Projected Jurisdictional Waters`"
continued stream flow if a rock cofferdam option /
is selected. A temporary culvert would not be
DATA SOURCE: Bing Maps Hybrid Aerial Imagery
required if the sheet pile cofferdam option is selected,/er Park
as it would have a narrower footprint and would not
"Surface waters were delineated by Three Oaks
impede flows from this tributary.
Engineering and HDR.French
Impact for rock cofferdam option
""Stream/river delineated limits have been
Impact Number: S5
Impact Type: Fill (Culvert)Broad
projected based on prior delineation surveyRiver
Impact Duration: Temporary
data and aerial review to reflect alignment
Stream Type: Intermittent (Trib to French
changes for the proposed river crossing that
Broad River)
t
Impact Number: W1
occurred after the on -site delineation survey.
Impact Area: 25 Linear Feet (0.001 acres)
+
Impact Type: Matting
N
Impact Duration: Temporary
A
Wetland Type: Emergent
Impact Area: 0.08 Acres
0 400
Feet
oo SPN SEWEggqF, MSD CARRIER BRIDGE PUMP STATION REPLACEMENT PROJECT
1—N POTENTIAL IMPACTS TO WATERS OF THE U.S.
Figure 8A
\\CLTSMAIWGIS DATA\GIS\PROJECTSb4671 MSD BUNCOMBE\10194380 CARRIERBRIDGEPS UPDATED\7.2 WIP\MAP DOCS\MSD CARRIERBRIDGE USACE.APRX DATE:61112023 USACE PRECONSTRUCTION NOTIFICATION APPLICATION

LEGEND
Construction Work Area
Proposed Cofferdams (stage 1)
® Proposed Cofferdams (stage 2)
Proposed 60-inch Gravity Sewer
Proposed Access Route
Delineated Wetlands*
Delineated Streams/Rivers*
Projected Jurisdictional Waters**
DATA SOURCE: Bing Maps Hybrid Aerial Imagery
*Surface waters were delineated by Three Oaks
Engineering and HDR.
**Stream/river delineated limits have been
projected based on prior delineation survey
data and aerial review to reflect alignment
changes for the proposed river crossing that
occurred after the on -site delineation survey.
N
A
0 200
Feet
This is a proposed footprint for the rock cofferdam option which has a wider base
than the sheet pile cofferdam option. A temporary culvert may be placed on the
tributary to the French Broad River near the confluence with the river to not impede
flow and route water away from the cofferdam. The sheet pile cofferdam would have
a much narrower footprint from that of the rock cofferdam and therefore would have
no impact on flows from the tributary or require a temporary culvert installed to
mitigate potential impact to flows.
Impact for rock cofferdam option t
Impact Number: S6
Impact Type: Fill (Culvert)
Impact Duration: Temporary
Stream Type: Intermittent (Trib to French Broad River)
Impact Area: 68 Linear Feet (0.004 acres)
Impact Number: S3
Impact Type: Fill (Cofferdam)
Impact Duration: Temporary
Stream Type: Perennial (French Broad River)
Impact Area: 100 Linear Feet (0.87 Acres)
Impact Number: S4
Impact Type: Dewatering/Excavation (Pipe Installation)
Impact Duration: Temporary rJ
Stream Type: Perennial (French Broad River)
Impact Area: 50 Linear Feet (0.26 Acres)
4 SPNSEWEggqF, MSD CARRIER BRIDGE PUMP STATION REPLACEMENT PROJECT
IS
FN POTENTIAL IMPACTS TO WATERS OF THE U.S.
Figure 8B
\\CLTSMAIWGIS DATA\GIS\PROJECTSb4671 MSD BUNCOMBE\10194380 CARRIERBRIDGEPS UPDATED\7.2 WIP\MAP DOCS\MSD CARRIERBRIDGE USACE.APRX DATE:61112023 USACE PRECONSTRUCTION NOTIFICATION APPLICATION

1 1 2 I 3 I 4 I 5 I 6
7
N.
2010
2000
1990
1980
1970
1960
1950
0+00
' /
till(
III if
llll��
1
Vs,
PROPOSED GRADE RETAI
_ �E
NOT
EXISTING SANI
° ABANDONED IN
ING WALL
;363 ,� ,�
—
ISTING GRADE
RID-ROX LOCATION
SURVEYED.
FARY SEWER TO E
PLACE.
E
—
45 DEG
BEND (FM #1,#2)
PROPOSED 10" GRAVITY SEWER
458 LF 36" DIP (FM #1)
-
-
-
45
22 DEG BEND (FrV
DEG BEND (FM #
-
#1, 927)
, #2)
-
-
-
0+50
HDR Engineering Inc.
of the Carolinas
1+00 1+50 2+00 2+50 3+00 3+50 4+00 4+50 5+00 5+50 6+00 6+50 7+00 7+50
440 S. Church Street, Suite 1000
Charlotte, NC 28202
704.338.6700
N.C.B.E.L.S. License Number: F-0116
PRELIMINARY
PROJECT MANAGER MATTHEW A. SHULTZ
DESIGNED BY K. QUATTLEBAUM, PE
CHECKED BY M. SHULTZ, PE
DRAWN BY C.GIGLIOTTI
PRELIMINARY
NOT FOR
CONSTRUCTION
OR
RECORDING
S EWER,,,e
�8F � �
COUNTY, Novi
2010
2000
1990
1970
1960
1950
8+00
CARRIER BRIDGE
PUMP STATION
METROPOLITAN SEWERAGE DISTRICT OF
BUNCOMBE COUNTY
Zz
GENERAL NOTES:
VI v nlnTGc_
1.
36" PARALLEL FORCE MAINS
PLAN & PROFILE 1
0 1" 2" FILENAME I 01C303-DWG
SHEET
01C303
0
C
i
0
ISSUE DATE DESCRIPTION
PROJECT NUMBER 1 10194380
SCALE 1 1 " = 40'

1 1 2 I 3 I 4 I 5
0
7
17
I / i / mo °' o —/-N 3g°33,
cl?/.� /'' 1 F� r I ( i /.,,, 11 t
6" 45.00 ELB�/
12 L 6" D�P
�� ° ELBr
cP coAAj
\ \ ` 00 1 EAR °? �y c o / / c° // 36" 45.00 ELB W 1 �
\ \ G •� `9cP c° / / �: F�� � �.�.' � l/ i' % // .� I�+ �
I / FLOOD ELEV o / / (/ /-3g45.0+. / I , / / , t / Ilk
° qLBdv
00
c�cCO / I /" �O so/
-
' I r�
cam/ / c \ r/ I \ c�o
x , / / // / 36 .0 9LBO —�
c0 ,E MAIN 1
C\\ T�°�, /, / �c�/1 DIP o >/ 5
15-
NHOL
c° o i / / / / /f r -� 68270-e
r / / / / STRUCTUR - (30
/ / / / / / — — E 940091
/ �� ct+�� c / � ��c/ c co /r / / / STA 14+98. 9
FQRCE MAIN #t / /' ANHOLE
c / / r36" DIP 15 L // / / 42" N 682693.
c° i / / / // / / / E 94007
co PrROPOSEd5�'
/ o / / co � o� / IbERMANE�\1T/
c° /r C / $EWER SE NT03
STRUCTU E - (31)
STA 15+1 .56
Q-0 IN
2010
2000
1990
1980
1970
1960
1950
8+00
22.5 DEG BEND (FM #1, #2)
—
45 DEG BEND (FM #1, #2) --- \
45 DEG BEND (FM #1, #2)
12 LF 36" DIP (FM #1) I
I
22.5 DEG BEND (FM #1, #2)
MANHOLE NO.
STA 14+98.66
RIM = 1976.08
36" IN (SW) IE =
42" OUT (NE) IE
45 DEG BEND (
45 DEG BEND (FM;
22.5 DEG BEND (FM #1, #2)
/
FRENCH
BROAD RIVER
/
8+50 9+00 9+50 10+00
HDR Engineering Inc.
of the Carolinas
440 S. Church Street, Suite 1000
Charlotte, NC 28202
704.338.6700
N.C.B.E.L.S. License Number: F-0116
10+50 11+00 11+50
PRELIMINARY
ISSUE DATE DESCRIPTION
12+00 12+50 \\-- 13+00 13+50
CONCRETE ENCASEMENT
PROJECT MANAGER MATTHEW A. SHULTZ
DESIGNED BY
K. QUATTLEBAUM, PE
CHECKED BY
M. SHULTZ, PE
DRAWN BY
C. GIGLIOTTI
PROJECT NUMBER
10194380
14+00
PRELIMINARY
NOT FOR
CONSTRUCTION
OR
RECORDING
/
/
/
/
/
/
/
/
/
/
(
i
2010
2000
9 (8' DIA) (84")
MANHOLE NO. 10 (8' DIA) (84")
STA 15+13.89
RIM = 1976.88 1990
1967.00
42" IN (SW) IE = 1966.85
= 1967.00
54" OUT (NW) IE = 1963.80
FM #1)
15 LF 42" PVC 1980
k1)
GRAVITY SEWER@ 0. %
1970
,,,--EXISIING 54" GRAVITY TEWER
1
22.5 DEG BEND (FM #1, #2)
14+50 15+00
1960
' 1950
15+50 16+00
CARRIER BRIDGE
PUMP STATION
METROPOLITAN SEWERAGE DISTRICT OF
BUNCOMBE COUNTY
GENERAL NOTES:
i
36" PARALLEL FORCE MAIN
PLAN & PROFILE 2
0 1" 2° FILENAME I 01C304.DWG
0009
SCALE 1 1 " = 40'
SHEET
01C304
C
0

1 1 2 1 3 1 4 1 5 1 6 1 7
/
/ QN�
PROPERTY LINE
I� FLOOD _ � _,^ � — — — — o
� ZONE AE _ _ � � � � _ _ CD
N
� o
—
W
/ — -1990- —
89-
H
—
2
h
OFiE
—DF�
W
EDGE OF PAVEMENT f- W
_�_
E—_,� QF —SHE
QH-
O
CONCRETE ISLAND
_— 1984
O
C
CONCRETE CURB i
PROP. 54" GRAVITY SEWER -
- —
��S
��
PROP. 60" GRAVITY SEWER
PROP. STORM MANHOLES
& PROP. 24" RCP STORM DRAIN O7
I
2055
LYMAN STREET
SEE SHEET02C-05
FOR PLAN AND PROFILE
� loxI
,�/
BACK OF CONCRETE CURB
(LIMITS OF DISTURBANCE)
PUBLIC RIGHT-OF-WAY
ASPHALT PAVEMENT
4O CONNECT TO EX. SEWER
STA 0+00 —
N 682112.55
E 940471.36
13 LF 60"
HAND RAIL—
___L0D— — — —
2+0
'IPEO 190 LF 60" S
1+00
- DSF-
- — _-------- - _ r-,UGEUbt--^�-
=UGE_—
S
_UGE- 19814—
o _ .0 __ -� ` = p- / / 2" LITTLELEAF -
-_=UGE—-
- UNDERGROUND— —
____UGC 2"-�1 IR r;I I ELECTRIC — SR02+03MANHOLE #2
TA 980 pSFz �� 0 _IGHT N 681925.73
PROP. MANHOLE #1
,f' o DSF_ - -SSMH 6 STA 0+13 10' RIVERBANK BUFFERO5 POLE E 940549.71
RIM: 1,982.01 N 682101.44 O (LIMITS OF DISTURBANCE)
i 2" SOUR GUM MR/ 1 964 4' E 940478 12
3+00
S
_ 15" R
I�
Q I
-
- UGE -------- ----HUGE— -DSF---- -
�� a990—_--- - _ - S -UGE—
1 5 =__— f -DSF
197 �= _ -�
PROP. MANHOLE #3
w=
SSMH STA 3+32
2" LITTLELEAF
RIM: 1,981.77' LINDEN N 681802.14 LET -::PROTECTION
INV: 1,964.8' E 940587.72 -
RIP RAP AND 54" RCP GRAVITY SEWER (6 EDGE OF
i DOUBLE ROW SILT FENCE O -FRENCH BROAD RIVER -
SCALE: GEOTEXTILE FABRIC WATER'
- PLAN
1" = 20'
K1I11t,
1990
WIIel
WZell]
EW
••ff
•:1
1970
1960
-0+25 0+00 0+50 1+00 1+50 2+00 2+50 3+00 3+50 4+00
60" GRAVITY SEWER PROFILE
HDR Engineering Inc.
of the Carolinas
440 S. Church Street, Suite 1000
Charlotte, NC 28202
704.338.6700
N.C.B.E.L.S. License Number: F-0116
PRELIMINARY
A
ISSUE DATE DESCRIPTION
SCALE: 1" = 20' HORZ.
1"=5'VERT.
PROJECT MANAGER MATTHEW A. SHULTZ
DESIGNED BY M. SHULTZ, PE
CHECKED BY S. BEROSET, PE
DRAWN BY J. KROOSWYK
PROJECT NUMBER 1 10194380
QoN'� pN SEWER40
�G z
CC)UNTY,
FRENCH BROAD INTERCEPTOR
REPLACEMENT
METROPOLITAN SEWERAGE DISTRICT OF
BUNCOMBE COUNTY
GENERAL NOTES:
1. DRAWING SHEETS O4C-01 AND 04C-02
PROVIDE DRAWING DETAILS FOR SOME OF
THE EXISTING FEATURES. ALL FEATURES
DISTURBED, DAMAGED, REMOVED, ETC.
SHALL BE FURNISHED AND
RECONSTRUCTED PER THE DETAILS AND
EXISTING SITE LAYOUT INCLUDING SIZE,
LOCATION AND ELEVATION.
2. ONLY THE NEWLY PLANTED LANDSCAPE
TREES ARE SHOWN AND LABELED. ALL
TREES LABELED NEED TO BE REPLACED
10-FEET FROM SEWER. ADDITIONAL
TREES AND VEGETATION EXIST
BETWEEN ASPHALT PATH AND RIVER
THAT WILL NEED TO BE CLEARED AND
REMOVED WITHIN THE LIMITS OF
DISTURBANCE.
3. WITH THE EXCEPTION OF MANHOLE #1 (SEE
KEY NOTE), FOR ALL OTHER MANHOLES
CONTRACTOR MAY USE CIRCULAR PRECAST
CONCRETE, T-SERIES PRECAST CONCRETE
OR FIBERGLASS TEE, IN LOCATIONS THAT
ALLOW FOR EACH OPTION.
4. ALL PROPOSED SANITARY SEWER
MANHOLES SHALL HAVE SEALED
WATERTIGHT FRAME AND LID.
5. ALL CONCRETE MANHOLES SHALL INCLUDE
CONCRETE PROTECTIVE LINER.
6. FOR ANY TEMPORARY LANE CLOSURE
OF NORTHBOUND LANE, INSTALL ALL
TRAFFIC CONTROL DEVICES AND
PERFORM FLAGGING PER NCDOT
REQUIREMENTS.
U UNDERGROUND ELECTRIC RUNS ALONG
ENTIRE LENGTH OF WEST SIDE OF
MULTI -USE PATH CONNECTING LIGHT
POLES. REMOVE AND REPLACE AS
REQUIRED AS PART OF PIPE
INSTALLATION.
O2 VERIFY EXISTING GRAVITY SEWER SIZE,
LOCATION AND MATERIAL TYPE.
CONNECT INTO PROPOSED MANHOLE #1.
OMANHOLE #1 SHALL HAVE A MINIMUM
INSIDE DIAMETER OF 120", INCREASE IF
NEEDED TO ACCEPT 10" SEWER, AND 60"
RISER UP TO THE CONE SECTION. PRIOR
TO CONSTRUCTION, VERIFY LOCATION
OF 10" SEWER AND ADJUST PROPOSED
MANHOLE LOCATION AS REQUIRED.
O4 CONNECT EXISTING 54" PIPE TO
PROPOSED 60" PIPE USING BURIED
PRECAST JUNCTION STRUCTURE WITH
FLEXIBLE BOOT CONNECTION. MEET ALL
REQUIREMENTS OF PRECAST MANHOLES
AND PROVIDE PROTECTIVE LINING ON
WALLS AND SOLID TOP. PER
MANUFACTURE'S SPECIFICATIONS.
PRECAST CONCRETE STRUCTURE CAN
BE ROUND, RECTANGULAR OR
T-STYLE MANHOLE BASE.
O5 10' BUFFER FROM TOP OF RIVER BANK.
NO TREE CLEARING OR EXCAVATIONS
ALLOWED WITHIN BUFFER. TEMPORARY
BYPASS PIPING CAN BE INSTALLED
WITHIN BUFFER.
OALL EXISTING MANHOLES AND GRAVITY
SEWER PIPE SHALL BE REMOVED OR
ABANDONED. ANY PIPE SECTIONS NOT
REMOVED SHALL HAVE ALL OPEN ENDS
PLUGGED WITH CONCRETE. ANY
MANHOLES NOT REMOVED SHALL HAVE
TOP 3-FEET REMOVED, ALL PIPE
PLUGGED WITH CONCRETE AND
REMAINING PORTION FILLED WITH
COMPACTED SOIL.
O7 REMOVE EXISTING STORM MANHOLE
AND PIPE AS REQUIRED TO INSTALL NEW
GRAVITY SEWER AND NEW STORM
SYSTEM.
Og INSTALL PERFORATED 6" PLASTIC PIPE
WITH SOCK TO SERVE AS A FRENCH
DRAIN. DAYLIGHT IN RIVER BANK.
OREDUCE TO SINGLE ROW WHERE
ASPHALT PATH DOES NOT ALLOW
INSTALLATION OF SECOND ROW.
GRAVITY SEWER
PLAN AND PROFILE
STA 0+00 TO STA 4+00
0 1" 2" FILENAME OOC-UT02-20 ER.dwg
SCALE 1 1" = 20'
SHEET
02C-01
FBI
C
C
0

1 2 3 4 5 6
CORRUGATED CONCRETE
EDGE OF PAVEMENT ISLAND FOR EMERGENCY
PROP. MANHOLE #5 VEHICLE ACCESS
STA 6+64 PROPERTY LINE
N 681474.21
E 940638.78
U PROP. MANHOLE #4 I
I STA 6+49
bo N 681488.99 ` I
E 940637.99 � CONCRETE \
tnDl PROP.60" LYMAN STREET CURB \
m n GRAVITY SEWER BURIED TRENCH BOXES PUBLIC RIGHT-OF-WAY
U)r BACK OF CONCRETE CURB AND STEEL PLATE. REMOVE ASPHALT PAVEMENT _
-I_- AND DELIVER TO MSD ` — -LOD—= �— LOD- —
m z (LIMITS OF DISTURBANCE)
m — Kur _Lobe l I
INLET PROTECTION (TYP.) "' BIKE PATH (ASPHALT)
15 RCP,
N —LOD— n
� � � CLOD
o , _ CPS
� o N) 18 R —
i
15" RCP - MULTI -USE PATH (ASPHALT) \
I o- _ X
/ -LOD �� n SEE SHEET 02C-04 \ _________--------UGE---------
0 ____t----------
�" RCP FOR PLAN AND PROFILE --7+00 80
CP UGE-------
15 ------UGE-------- - —
/ LODE 6+00 S S
— ABAI�MNEID 5" RCP a _ - \ _
� STORM PIPE � � � _ --- - 2" LITTLELEAF \ UNDERGROUND
5+00 S _
__UGE- {�U SSMHO LINDEN 48" RCP O -ELECTRIC
I - —SS LIGHT POLE\ RIM: 1,980.14' -1980 GRAVITY SEWER f
------ UGES 2" EASTERN REDBUD INV: 1,965.7' 2" LITTLELEAF�_ OS O
0 -
4 � �= DSF- — — — IDSF- —DSF- DSF- —DSF- LINDEN _DSF _� _��� � co
Xt _ _ —_— ------ - - - - - - - - - L,L
UGE -- f _ _ _ _2" EASTERN RE BUD 2" LITTLELEAF - - - - - - SEE SHEET 02C-04\Q
-_ __-- DSF _ SOIL BORING B3 FOR PLAN AND PROFILE / CD_
i -UGE -DSF LU
_2" EASTERN REDBUD LINDEN' _ — — - _ �//\U) -
„RCP f — 10 RIVERBANK BUFFER Z uJ _
Ole (LIMITS — _ \�\ _ _ — — — _ — _ _ - � — —(LIMITS OF DISTURBANCE): � — _— _ �� � � U)
1- S =1970 — _— —24" DIP FORCE - � 2
— DOUBLE ROW SILT FENCE 4 \ -19
970�- � MAIN SEWER W
� W
FRENCH BROAD RIVER— I < co
I
I
PLAN I
2000 I SCALE:1" = 20' I 2000
1990
''1
1970
1990
•'1
1970
1960
4+00 4+50 5+00 5+50 6+00 6+50 7+00 7+50 8+00
HDR Engineering Inc.
of the Carolinas
440 S. Church Street, Suite 1000
Charlotte, NC 28202
704.338.6700
N.C.B.E.L.S. License Number: F-0116
PRELIMINARY
A
ISSUE DATE DESCRIPTION
60" GRAVITY SEWER PROFILE
SCALE: 1" = 20' HORZ.
1"=5'VERT.
PROJECT MANAGER MATTHEW A. SHULTZ
DESIGNED BY M. SHULTZ, PE
CHECKED BY S. BEROSET, PE
DRAWN BY J. KROOSYWK
PROJECT NUMBER 110194380
QoN'� pN SEWER40
a FRENCH BROAD INTERCEPTOR
\—f\- REPLACEMENT
Tyco 9y$`oQ METROPOLITAN SEWERAGE DISTRICT OF
�gF
CC)UN7Y, 10:�"' BUNCOMBE COUNTY
7
GENERAL NOTES:
1. DRAWING SHEETS O4C-01 AND 04C-02
PROVIDE DRAWING DETAILS FOR SOME
OF THE EXISTING FEATURES. ALL
FEATURES DISTURBED, DAMAGED,
REMOVED, ETC. SHALL BE FURNISHED
AND RECONSTRUCTED PER THE DETAILS
AND EXISTING SITE LAYOUT INCLUDING
SIZE, LOCATION AND ELEVATION.
2. ONLY THE NEWLY PLANTED LANDSCAPE
TREES ARE SHOWN AND LABELED. ALL
TREES LABELED NEED TO BE REPLACED
10-FEET FROM SEWER. ADDITIONAL
TREES AND VEGETATION EXIST
BETWEEN ASPHALT PATH AND RIVER
THAT WILL NEED TO BE CLEARED AND
REMOVED WITHIN THE LIMITS OF
DISTURBANCE.
3. ALL PROPOSED SANITARY SEWER
MANHOLES SHALL HAVE A MINIMUM
INSIDE DIAMETER OF 96-INCHES, HAVE
SEALED WATERTIGHT FRAME AND LID,
AND INCLUDE CONCRETE PROTECTIVE
LINER.
4. FOR ANY TEMPORARY LANE CLOSURE
OF NORTHBOUND LANE, INSTALL ALL
TRAFFIC CONTROL DEVICES AND
PERFORM FLAGGING PER NCDOT
REQUIREMENTS.
KEY NOTES:
� UNDERGROUND ELECTRIC RUNS ALONG
ENTIRE LENGTH OF WEST SIDE OF
MULTI -USE PATH CONNECTING LIGHT
POLES.
O10' BUFFER FROM TOP OF RIVER BANK.
NO TREE CLEARING OR EXCAVATIONS
ALLOWED WITHIN BUFFER. TEMPORARY
BYPASS PIPING CAN BE INSTALLED
WITHIN BUFFER.
\ ALL EXISTING MANHOLES AND GRAVITY
SEWER PIPE SHALL BE REMOVED OR
ABANDONED. ANY PIPE SECTIONS NOT
REMOVED SHALL HAVE ALL OPEN ENDS
PLUGGED WITH CONCRETE. ANY
MANHOLES NOT REMOVED SHALL HAVE
TOP 3-FEET REMOVED, ALL PIPES
PLUGGED WITH CONCRETE AND
REMAINING PORTION FILLED WITH
COMPACTED SOIL.
OREDUCE TO SINGLE ROW WHERE
ASPHALT PATH DOES NOT ALLOW
INSTALLATION OF SECOND ROW.
\ CONNECT EXISTING FORCE MAIN INTO
PROPOSED MANHOLE #8 USING
FLEXIBLE CONNECTION, 36" PIPE
SECTION AND REDUCER. CUT EXISTING
24" PIPE AS REQUIRED, INSTALL SOLID
SLEEVE AND FITTINGS AS REQUIRED TO
MAKE CONNECTIONS. ALL FORCE MAIN
PIPE AND FITTINGS SHALL BE
RESTRAINED JOINT, PROTECTO 401
LINED DUCTILE IRON. SEE SHEET 02C-04.
GRAVITY SEWER
PLAN AND PROFILE
STA 4+00 TO STA 8+00
0 1" 2" FILENAME OOC-UT02-20 ER.dwg
SCALE 1" = 20'
SHEET
02C-02
n
C
C
0

1
E
3
0
5
L
7
CORRUGATED CONCRETE ISLAND
FOR EMERGENCY VEHICLE ACCESS
BACK OF CONCRETE CURB
(LIMITS OF DISTURBANCE)
INLET PROTECTION
EDGE OF PAVEMENT
TBM 60d NAIL W/ SHINER
PROPERTY LINE ELEV: 1,992.46'
`-' � `�w LYMAN �TREET
HAND RAIL \ CONCRETE PUBLIC RIGHT-OF-WAY �c9 � O �� - - —
CURB ASPHALT PA EMENT 2 SWAMRWHITE OAK �w O
I -_ \ SIGN �0`9
0 - - - -
-LOD- LOD- 2" SWAMP WHITE OAK ------
0
�y
-o v O
W
15" RCP O
f— LOD
—LOD-
--�-- _
-------------1-------- UGE -------------------- �-UGE------ --- -� ---- -- UGEE=----_ '19�v—I \�T�) E SUPP -
C
80 \ c0 = — 1LfIl U— �POL ORT_ O
—S �ooc e% ��` � W IRES (TYP.)►-
_ _48" RCP_ Q . W TBM CHISLED "X"
METAL POWER O O W ELo: 1,995.10'
UNDERGROUND_ _ - -&$UR SUM— 1980 LIGHT POLE_
-ELECTRIC —DSF- —OSF� — — _ _ — -TRANSMISSIONS -�DSF�- a
PROP. MANHOLE #6 ~
/ER _ - - - - - - - -/" SOUR GUM - - - POLE \ 5F =L0 % STA 10+44 �_ \\ \ \\\ \ O CONCRETE
p5 �/ � �- _ - _ _ � _ _ — _\ . _- O l .��• _ N 681094.75 � - \ \ 1 m Q
/ PROP. 60" �� DSF /�--� \ \ E 940658.95 TIN�'"FRAVCf1rS E \ I I -' a /
GRAVITY SEWER _ -. . � _ WETLAND y _ y _ - - _ (TO EMAIN IN SERVIC \\ 1 Q m CO
o — _ __ - _-- --�SF �( \ - gF'�JG� S' _
S � I
o cN�i — — — _ _ ��\�� — — = = �DSF_ �� SSMH \' 48" RCP GRAVITY
o i = \��;s 8 f CP GRAVITY SEWERO - - - _ _ — // RIM: 1,987.50'
_ SEWER
lk-
LL1 00
W 10' RIVERBANK BUFFER Oy- \ \
z LU
(LIMITS OF DISTURBANCE)
CO
2" SWAMP WHITE OAK
W
QLU
FRENCH BROAD RIVER- EDGE OF WATER—
.�� PLAN - - -: 970
I DUKE ENERGY SCALE: 1" = 20'
HIGH VOLTAGEO
OVERHEAD ELETRIC o
HDR Engineering Inc.
of the Carolinas
440 S. Church Street, Suite 1000
Charlotte, NC 28202
704.338.6700
N.C.B.E.L.S. License Number: F-0116
2000
••1
•'1
1970
1960
8+00 8+50 9+00 9+50
60" GRAVITY SEWER PROFILE
A , T \
A
ISSUE DATE DESCRIPTION
SCALE: 1" = 20' HORZ.
1"=5'VERT.
PROJECT MANAGER MATTHEW A. SHULTZ
DESIGNED BY M. SHULTZ, PE
CHECKED BY S. BEROSET, PE
DRAWN BY J. KROOSWYK
PROJECT NUMBER 10194380
10+00
10+50
S,1 AAA
zQ
c°fig "quo
CC)UNTY,
2000
1990
EXISTING 48" GRAVITY SEWER
(TO REMAIN IN SERVICE)
1970
STING 48"
'ER INTO
ANHOLE
1960
10+75
FRENCH BROAD INTERCEPTOR
REPLACEMENT
METROPOLITAN SEWERAGE DISTRICT OF
BUNCOMBE COUNTY
GENERAL NOTES:
1. DRAWING SHEETS O4C-01 AND 04C-02
PROVIDE DRAWING DETAILS FOR SOME
OF THE EXISTING FEATURES. ALL
FEATURES DISTURBED, DAMAGED,
REMOVED, ETC. SHALL BE FURNISHED
AND RECONSTRUCTED PER THE DETAILS
AND EXISTING SITE LAYOUT INCLUDING
SIZE, LOCATION AND ELEVATION.
2. ONLY THE NEWLY PLANTED LANDSCAPE
TREES ARE SHOWN AND LABELED. ALL
TREES LABELED NEED TO BE REPLACED
10-FEET FROM SEWER. ADDITIONAL
TREES AND VEGETATION EXIST
BETWEEN ASPHALT PATH AND RIVER
THAT WILL NEED TO BE CLEARED AND
REMOVED WITHIN THE LIMITS OF
DISTURBANCE.
3. ALL PROPOSED SANITARY SEWER
MANHOLES SHALL HAVE A MINIMUM
INSIDE DIAMETER OF 96-INCHES, HAVE
SEALED WATERTIGHT FRAME AND LID,
AND INCLUDE CONCRETE PROTECTIVE
LINER.
4. FOR ANY TEMPORARY LANE CLOSURE
OF NORTHBOUND LANE, INSTALL ALL
TRAFFIC CONTROL DEVICES AND
PERFORM FLAGGING PER NCDOT
REQUIREMENTS.
OUNDERGROUND ELECTRIC RUNS ALONG
ENTIRE LENGTH OF WEST SIDE OF
MULTI -USE PATH CONNECTING LIGHT
POLES.
O10' BUFFER FROM TOP OF RIVER BANK.
NO TREE CLEARING OR EXCAVATIONS
ALLOWED WITHIN BUFFER. TEMPORARY
BYPASS PIPING CAN BE INSTALLED
WITHIN BUFFER.
OALL EXISTING MANHOLES AND GRAVITY
SEWER PIPE SHALL BE REMOVED OR
ABANDONED. ANY PIPE SECTIONS NOT
REMOVED SHALL HAVE ALL OPEN ENDS
PLUGGED WITH CONCRETE. ANY
MANHOLES NOT REMOVED NOT
REMOVED SHALL HAVE TOP 3-THREE
REMOVED, ALL PIPES PLUGGED WITH
CONCRETE AND REMAINING PORTION
WITH COMPACTED SOIL.
OLIMIT DISTURBANCE TO WETLAND AREA
TO THE EXTENT POSSIBLE. INSTALL
TEMPORARY GEOTEXTILE FABRIC
BEFORE PLACING ANY TEMPORARY FILL.
FOLLOWING CONSTRUCTION RESTORE
TO PRE -CONSTRUCTION ELEVATIONS
AND PLAN SPECIAL WETLAND SEED MIX.
(DREDUCE TO SINGLE ROW WHERE
ASPHALT PATH DOES NOT ALLOW
INSTALLATION OF SECOND ROW.
ORESTORE ALL SLOPE DISTURBED
BETWEEN STA 8+50 AND MANHOLE #5
WITH EROSION CONTROL MATTING, SEE
DETAIL 7/03C-04.
OCOMPLY WITH ALL OSHA, DUKE ENERGY
AND OTHER APPLICABLE GUIDELINES
AND SAFETY STANDARDS FOR WORKING
NEAR AND UNDER HIGH VOLTAGE
ELECTRICAL LINES. CONTRACTOR IS
RESPONSIBLE FOR COORDINATING ALL
WORK WITH DUKE ENERGY.
OFURNISH AND INSTALL HOBAS CLOSURE
COUPLING OR APPROVED STAINLESS
STEEL REPAIR SLEEVE TO JOIN PIPE
ENDS. INCLUDE COST AS PART OF THE
60" PIPE INSTALLATION.
GRAVITY SEWER
PLAN AND PROFILE
STA 8+00 TO STA 10+39
0 1" 2" FILENAME OOC-UT02-20 ER.dwg
SCALE 1 1" = 20'
SHEET
02C-03
FBI
C
C
0

1 2 3 4 5 6 7
- J \i u - 1 1 \ I CO M HOLE NO. (8 pIA)
r ---\\\ /° jgu /°U /�� \A-' \I / i i� \\ \ �, i N1144._90__-� \ _ \ �Q
�___, \\ FLOODWAY \ _ .E-94fl'8�.82 I _ - \ 1� 121 LF OF 60" GRAVITY SEWER
0\3\o /.\\ ou `\ `� 1 / ,` I ILL 7 LF 0 GRAVITY SEWER ___'- ___--- ,; ❑ - \ 1 t i I \ = �'� \ \. \ �`` _
° / / a / / Z a \ _-- - - d 1 ,, MANHOL NO_ IA I \ -- 90 LF OF 84"
{8 ) \ = STEEL CASING PIPE
u I ;/. - I 1 ° I _____ - - / \ _ \ dp N 94 262.18 \ J \ O /\ \ MANHOLE NO. 5 (10' DIA)
u / w /° i ---- / z 1 o w - - - �� - - - �- ��-- w� \ E 940262.17 \ , \ \ \\\ \ • .
\ �__ - I _ \ \ \ 2 Q / o\\
�\ o 1 ou / /`\ MANHOLE NO. 2 8' til __ I r _- - / � \ / COO
\ \ ( )
u ` /'� s �' ✓ / / I ( _ _ N 680903.34 1MANHOLE
� � °�� y�� rN oU / / � � /� I � N 681433.15 _ -�-- -�- -/ \� ' � ^�,�w / � o ,\ W i \\ \ \I \ ��� \ \ �s/- \ �- �_ /1r �\�`.
\ d 1 1. / 1 I E 940182.05 1 / / `\ h w \ \ ` ` / o --_ ��''' /, , E 940273.30
o \ 1 �oov 1 `\��''-ice' I i l 1/ ��/-t i \� \ I /�� I r \�
00
.�7�__-- ° 7/�/ p/ 1 `� ,I 8�Q0 28 LF OF 48" GRAVITY SEWER
23-L-F O 1 I 'EWE
r
LF OF 8" GRAITY SEVF3 \ - s$ ss4e_RCPs
w \ 1 / r - v o► 1 ,/ ,' / �,P' - _ - _ - �`'-\ . \\ MANHOLE
\� RIM:1,976.34
z 0 MANHOLE I -�^�\ \\ < / \ \�
i ``fir` INV: 1,960.4
° / I 1 �� O W o \ i I 1 d21M: 1,975.91
SEWEI3FLa€MENT i % l z z ---- I - i s __- ___ _- _ •I_ \ \ °°
o o \ \ I I / \
J\ `\ \\ // /�;� _ - 1980
o� 1 \ \ /� 10' TEMPORAR c, / ( _ \ �t 1 \�,%/,���� �%' ; _ _- -_ =19_ \�i -�/` \ `� `\ N \\LO
I\
�' / / l , \ \ \ `� I i I CONSTRUCTION lily 1 J 1 197
/ r ` \ /-- \ EASEMENT u_ -� ,� I I \ - z \ \ - \I / / /l r / / n' - \ \ \ / \ ` _ \ \\
\ \ �} / , / !(1 �(' � ►�.� \ \ \ , MANHOLE NO. 6 (8' DIA)
\ \\\6
k `+�\\� , (REPLACE EXISTING
d TYP 1 - \ €AEI \ �- - - - - - \-_--_-_ --_-_- - _� ter. // / 11 I/ \\`\� �/\ \o;\ \o\\�
\ / \ / 1 `- \ _ '/ // / /I I r^Ll L\1\1 ` D\ �\ \ �\ MANHOLE WITH NEW
u_( ) \ / /------- \ �Ost \ \\ -- -_------------- - ------ _-- o° ���/ I l ill \I \` \ \ \`� DROP MANHOLE
II / I rn / a ORCE MAIN \ _�� - _ _ _/-w Y / ' \ \ \ \ \
YB 6Od INAI Ak/SHINER i w ----- _--�' y ��\` \\ ` \ - - - _ _ _-- _ 19,E w �L :// // � a ,\\ �1 `� \I���\\�\\ \ r s\\`\ N 680878.68
\ \ \\ / 1 \-^- _ �I 1 - \tea`\ \ ID1 ` I /\ __� _- -- -- = 80�\ ---
\\\ -L __ __ -,s 1\ \ \
\ ,oa ,/ IEL V: 1,981,'66 / w ou - - // / \ \\\ \ \ \ o\\
\ \ sly / 1 ` \ �l a \ -_------ ---_ ----- i /"�// /, \ I\\�\1 \�\\\\ o \ \\\\
Oi � I I\/�� 1 U / ou r `_�,-___- _ - _ - - __ �� r w rn,, . � // N �� \�\ \ \\ \ U \ \ \ \ \\�� E 940260.85
\ ` 10 TEr1/IPORARY I / / / w _ \ z-- -1985 - _ w 06,
\ \\ \\\\ \ \
\ �24" WATERLINE ,,'' �_'_ �Q �r °a -f -- / \\ ®` �{ ou `\ -� / -- _ _-�
C\O�ISI�\RUCTI�Id -_-' - - - z� 1 /--o- / LF OF 6d'" e_ �1 �ASPHALT�✓�°u 1 ` I \ i 1 %_== _______ _ - __� z o � TEMPORARY
E,/AS/EMENT ' / / ---- _ - j I m ` ! \�' __-_-_-__-- / \ *
/ \ o�\ \ 1 1 1 1 \ \\ {
RAWT�f Sg1(VER ` �°u \ \ \ \ Sao / / _ ;,! ',;, \ a/ \ \ \ \\\\ n
�b8' I 1 N �o� 1 Rs / Q /-t____-- P o ¢ �� \ �\,, / \ \\ I r 1\\ \ N , CONSTRUCTION
` PI�OPOSElS "FORC-E �tIAIPdS' w-- °� ®/ s�. WER TRANSMISSION TOW 1 E \ / = 2�" o ' 4 \ \ \
\ \ l/ 1 ,, /a 1 \ ® \ \ AL 1 A� Ej., a / a / z /r_-- i��^-r \ F,� <� \ O \ \ i �\ \\\ \ y`�\\`�er�,�} \ �, 1 EASEMENT
\ \ - \ \ 1 P ° / / wa \ \ \
)- , ASP / Q/ Qi 1 \\�\ \
\/� ' - MANHOLE NO. 7 4' DIA -!- , %- T W / �°; /
\ \ - ou -t� u _ W \ 1 ,� 1 l `I i / b� /' , 1 a� /\ \ I \\ \\\\\ \ \ \ 1 -FRENCH BROAD RIVER-
/ 0 ► \\ t\\ \\ \ \ 1
N 681465.54 _ _ T oul - i- - \ I I .5°/ I m ` \\ / \
E 9,39957.09� = °u _ _
n/4 WATER MAIN / E9J U 1 fin' - / d / \ 1 . I I
---- � / \_ \ I U � � --- _,p\\\.
�- - Pv E a'� �r iZ'i wwc 1 I I ; / I \ \ I / ) \ O O//-''�11 IIII I N \ \ \ -MANHOLE
\ WAR VALVE NfANHOLE' a _ -- / I \ ,�� ,� \, I \ I IIII III I \ / , \
GR' ou °u / I r'b a / \Ilil RIM: 1,976.27
W)�_I - - gs / �` / r , / //�/---'\ \ \ , \ 1 �I`I I co
co
1-I \\`\11�I IIII \ \\ `\ �\\ I \I / / ` I INV: 1,961.00
-7 u �°u p `\ 1 II I^ 24'{ _ EXISTING 48" / / �/III
"\ I I `
+ ° �z _ oAD GRAVITY SEWER/
_-� 1 CH
\ \ �°U j m 1 Ann��H�IL O. 8-�C N B
Zao_ n \,�° w a - r �-( _ �si�4FRE \�. ` - i
o Q w \ I 6p 1442 �� / RNER - /, i / \ 5`f till I I \
q \ OU / \ o _ a Q - / / /'sue-i �_� �' / I', I I I I
175 L\F OF 101 ° �/ \ Z -G \_ V>I I o - / ,--_ ,,-;'' \ / \ TBM 60d AIL W/SHINER I h
u no \ \ /� Q 0 _ \ 1 / - / E 93 41 / / I %% �' S ro
GRAY TY -� \ / z J / _ / / ! SS ------- ! - - 9di%'%''' \ \S 6 \
\ o \ Q O :---%i'�19 , i \ ssELEV: 1,9 3.52
oU -t -� �\ /_
' _� •�9�� - �� (/ \\ `\ ' �f ROPE--- ,,- /_,- Illi II II \\ N
�A1V�-IOLE.iwO (4' DIA) o - 62 CYLE IC L ` \_�� ss as' _ _ i \ �u `\ /�\ ou / I III IIIIIIIII t
'IN711�\/ �, `\_ _ _ _ � - - - ��Q`\' oU \ / 11 IIII I I I r I I \ 1 \ I I I !
\- GRAVI I Y S �O - �-� a5_=� - --- �� - ou
E 939897. �'- \ / 1985� -- - __--------- -- ,�,- ,,,, 100 ,�,�',�� J� /� °�
r - - - ---- -_ - ME OOa y � e5\ �� \\ \\ \ � ` I �o
10" OUT ( ) IE 19915.00 ` _ - °05'54" E 152.78'� ° - ° ss �"Sv - __==--------------------- PEE �J \ \\\�\\\ ` I h
/ S 14°47 24 177.49 10 _ - _ --- - _-- ;-;',' /
1 ' ss ss S cr0 /' - �' - i_1990 P \\ I \
__- _ N
•'DIP �i / ����� a
s --- / - o I r ',-' ------------------', PSP /.: %Q�soQ%' \ EXISTING 48" N�
I / �o / � / /
ASS 1 i SSI SS_ 3 / \ x_ __-_ �'� ! i% %%�i i� \ y5 \
�� 1 \`\\ x x x x�C''-�, x x-�--x \ I x(`\.�' scR�g - ----- k _ ��� / //�%i���y \ \\ GRAVITY SEWER \04 \ I N a
� �1 .. •i \ \ / __- ✓' - 5�""'6 ` -'- -'-• \ 1 I 1 , /I i 9�//0( �// EIWELL 1 W //�j /// ///� j =i \ o 00
MANHOLE / (n
--__ -� \ \ _ / 85' - _ I �i RIM: 1,982.69 I 1
Q__-Q i �/ -%- ii/i'�i i ,\I�' I
INV: 1, 960.0 I
° I '!%%' y55 MANHOLE �,
1gg0 ��-1 \ r i `\ - o `/- /\ 5\/\ RIM: 1,986.95 '�
_\ \ s \ \ x --''` \ �' -19_90 _ _ Sy�,��-� - \ \ I 1 Z. \ z } /i / / / i-i /i ice/ /- \ 5 \
-----__---_\ \ --,\ `- - \`\ �� _ //�---- - _ A -I IVIV ` ` \ I �` O \ j/i ///ii ' /i �'' �'/ \\II !
_ _ E _ I 4/ INV:1,961.24 1
_
co
co
\ /\ ------ - \
�10 / \\\\\\\\ \ W \ OF 601 \�
` MANHOLE I
----- ____ _ -- \\ / , ��.` / /-ti // / RIM' 1,98E 97
U00>
____oZ _ ___ ___ \\ lam___-_- ;_= �o �6:a--_ -'-� i�INV IN: 1,972.E
-� __ _ _ - \ ' _ cp.�: _ _ /� /// INV OUT: 1,972.3 I
2010
Z o o
-
LO
06 LO
rn
p
�
O
O zoo
I II w w
2000 PROPOSED
w
LO oo w z
-
GRADE
_
00
O=o°
M 0) z ~
z00
Z
PROPOSED 8'
2
Cn � o
1990 ING WALL
01-
0' POWER RAN
- - - -
_-,
z
--
O
1980
-
U)
1970
OUTSIDE DROP
�
o
1960
1950
35 LF OF 60" PIPE @ 0.
0+00 0+50
HDR Engineering Inc.
of the Carolinas
440 S. Church Street, Suite 1000
Charlotte, NC 28202
704.338.6700
2-09 LF OF 60" PIPE @ 0.20%
1+00 1+50
N.C.B.E.L.S. License Number: F-0116
2+00 2+50
PRELIMINARY
ISSUE DATE DESCRIPTION
Lw
2
O
z0
_
:�i Q
E Q
N
O
> II
CDW
i m
ZOO
Lu
Ill >
_
0
N
=
nl II Z p
z
Q
o 0
3+00
0
100 YEAR FLOOD ELEVATION
EXISTING GRADE
1 1
307 LF OF 60" PIPE @ 0.14%
3+50 4+00 4+50
PROJECT MANAGER MATTHEW A. SHULTZ
DESIGNED BY K. QUATTLEBAUM, PE
CHECKED BY M. SHULTZ, PE
DRAWN BY K. QUATTLEBAUM, PE
PROJECT NUMBER 110194380
90 LF OF 84" STEEL CASING PIPE INSTALLED
BY TRENCHLESS CONSTRUCTION
C,I METHODS PER SPECIFICATION BRIDGE
INIMUM PIPE THICKNESS - " EL 1994.55
�� co�
rn Co M
co O II O
p rn 11 Ill °' t II
Z"t C) ^ II II w
J� ti- �. ow
Ln - Z
0 °+° = � LO
� o FLOODWAY
zLo II Z O +
QH E2o o ~ II z z O
�U) �co (0 Q g= -
cn
OUTSIDE DROP
123 LF OF 60" PIPE @ 0.34%
5+00 5+50 6+00
PRELIMINARY
NOT FOR
CONSTRUCTION
OR
RECORDING
6+50
7+00
121 LF OF
21
7+50 8+00
LO LO
it
0
Ow o
Z-
O-
w
(.0
J
p04
rncn Lo
_
N
II • _rr_
ZQg-
�U)Ir
_ L;w
coo �-.
II
U)
LU
M 1
-..-;li�llLn�z0
LJ
L�I-0
+
C II 0 Z
�\
Q
� �
(i
48" GR VITY
SEWE
OUT IDE DROP
28 LF OF 48" PIPE @ 0.20%
8+50
CARRIER BRIDGE
PUMP STATION
METROPOLITAN SEWERAGE DISTRICT OF
BUNCOMBE COUNTY
9+00
2010
2000
1990
1980
1970
1960
1950
N.
GENERAL NOTES:
1. ALL MANHOLE RIMS SHALL BE SEALED AND
WATERTIGHT. SEE DETAIL 1/010503. MANHOLES TO
INCLUDE VENT PIPE WITH OPENING TWO FEET
ABOVE 100 YEAR FLOOD ELEVATION. SEE DETAIL
2/01 C502.
2. CONTRACTOR IS RESPONSIBLE FOR ALL BYPASS
PUMPING.
KEY NOTES:
v CONTRACTOR SHALL VERIFY HORIZONTAL AND
VERTICAL LOCATION OF EXISTING SEWER AT
CONNECTION POINT PRIOR TO CONSTRUCTION.
2O BYPASS DISCHARGE VAULT, SEE DETAIL ON
SHEET 01C108.
N 681468.02
E 939937.02
OBYPASS SUCTION VAULT, SEE DETAIL ON SHEET
01 C107.
N 681549.84
E 939920.04
60" INFLUENT GRAVITY SEWER
PLAN & PROFILE
0 1" 2" FILENAME 01C302.DWG
SCALE 1 " = 40'
SHEET
01C302
0
C
F
0

1
Q
2
5
L
7
I STEEL PLATE -� 1 'O�/�\
ASSUMED W,�TER LINE
- - _ - - - - ASSUMED WATER LINE \ \� O& ASPHALT
ASPHAL I PAv "v1E�JT �'c'1 \
ELECTRICAL _ SS .
SS /SSMH
�
BOX
— SSA SS- RIM:1,982.69'
SSMH SS \ INV:1,960.0'
ASS � .78► / .� 1 RIM: 1,986.97' SSA SS \\ /
\ 10 DIP / SS 0 5\ IN: 1,972.6' _ SS SS �� E A fz
/ \ _ / ---SS OUT: 1,972.3' SSMH 3 S5-�3
6� SS --SS ` - RIM: 1,986.95' SS SSO48" RCP-
�QB �� UNABLETOMEASURE -
Z O—N--E A E sS —_ — ---- — ---- __
Z O N E A E\ 5/8 RBF
rf
-_ —
CAR
\� \x ----------
SCRUB
-j�\\\\� _--------\\ AINT. AVEMEN
\�\\N\\�\4%//�\\� ------ - - _--1999-�\ „ - -- LID WET WELL A S P H A T P
_ - L
LLI
Ir-
z CONCRETE z
-p - - _��
\,I\U U jam_, _ - / ss
9per -�\ \ , \ \U U
\ \ /��J --- \ \ IVY
\ PROGRESS ENERGY OF \� --- \
2
CONCRETE FLOOR
14°17 '�
24 E 177.49'
O I P-
JSS-- SS ASS 0.10' AG S 6 ° �
pp5►54„
ASS E 0
_-� 1
SS 52
i
THE CAROLINAS \\\� \✓ \\\\�. _ Q f�
BUILDING\ METROPOLITAN SEWERAGE DISTRICT-
\ \� _ \ \ 9638-91-9330
\ P. 345 \ \ / \ �> O w \ _—�
D.B. 602, \ \�� ❑ MAINT.
\ \ \\\\ \ �_-------,\ \ o z D.B. 1034, P. 103 _ \
_ P.B. 68 P. 55 \ \ \ \ w I J LID - -
00
\ \ \ y 1 1-------- \\
r
� %' BUMPo
N
\ \ \ 2 \ \ \ / / / / \ \CO
- DROP INLET =
N
LEGEND
/--GR: 2 023.07'
IN: 2 018.9 — i ,SS AG - - - - - - - ABOVE GROUND SURVEY PERFORMED BY:
"I \\\\ \\ \ \ \ / \ / OUT: 2 018.2'
- - BELOW GROUND ROBERT C. BROWN (L-2748)
\ \ \ \ \ \ \ \ \ \ ED HOLMES &ASSOCIATES LAND SURVEYORS
�/ 300 RIDGEFIELD CT. SUITE 301
CMP - - - - - - - CORRUGATED METAL PIPE
ASHEVILLE, NC 28816
----RIM:
- - - - - - - CORRUGATED PLASTIC PIPE
RIM: 2,020.63 CPP STATE PLANE COORDINATES WERE OBTAINED BY
015.4' IN: 2A / GLOBAL NAVIGATION SATELLITE SYSTEM (GNSS)
/— — — — — — — — —
SS
I = DB -------DEED BOOK
OUT: 2 015.0
SURVEY, AND THE FOLLOWING INFORMATION WAS
DIP - - - - - - - DUCTILE IRON PIPE USED TO PERFORM THE GNSS SURVEY:
1.5" OIP G S�P DROP INLET HORIZONTAL POSITIONAL ACCURACY: 0.01 m
\ -2$30- S 8
— -O'er \ / DI -------DROP INLET
\ \ \ \ \ \ i /- S/ GR: 2,023.8'
\\\ \ \ \\ \ \ \ \ \ l I 1 l 1 ✓ / i O J \ � / VERTICAL POSTIONAL ACCURACY: 0.02 m
00
—2040 SS
OV Oj
OC/
SSMH � \ IOU - -
OU ov
RIM: 2,046.67'
OUT: 2,041.5'
HDR Engineering Inc.
of the Carolinas
440 S. Church Street, Suite 1000
Charlotte, NC 28202
704.338.6700
N.C.B.E.L.S. License Number: F-0116
PRELIMINARY
ISSUE DATE DESCRIPTION
PROJECT MANAGER MATTHEW A. SHULTZ
DESIGNED BY C.GIGLIOTTI,J.CAUSEY
CHECKED BY J. CAUSEY
DRAWN BY C. GIGLIOTTI
PROJECT NUMBER 110194380
OUT: 2,020.2'
EDGE OF WATER
EDGE OF ASPHALT
FLOOD HAZARD LINE (FLOODWAY)
FLOOD HAZARD LINE (ZONE AE)
PROPERTY LINE (SURVEYED)
PROPERTY LINE (NOT SURVEYED)
ADJOINING PROPERTY LINE
EDGE OF GRAVEL
STORM LINE
X FENCE (CHAIN LINK)
SS SS SANITARY SEWER LINE
OU OU
PRELIMINARY
NOT FOR
CONSTRUCTION
OR
RECORDING
OVERHEAD UTILITY LINE
TRANSMISSION LINE RIGHT-OF-WAY
O�\LPN S EWEgq,F
a
cOye �9ua saw'00' GPQ
COUNTY,
TREE LEGEND
BRC
------- BIRCH
BXE
- - - - - - - BOXELDER
CHY
------- CHERRY
GINKGO
------- GINKGO BILOBA
HDW
------- HARDWOOD
LOC
------- LOCUST
MAP
------- MAPLE
PIN
------- PINE
RDB
------- REDBUD
SYC
- - - - - - - SYCAMORE
WLN
------- WALNUT
-------FIRE HYDRANT
-------GUY ANCHOR
PIN - - - - - - - PARCEL IDENTIFICATION NUMBER
P. -------PAGE
0 - - - - - - - UTILITY POLE
RCP - - - - - -
- REINFORCED CONCRETE PIPE
RBC - - - - - -
- REBAR WITH CAP
RBF-------
REBARFOUND
• - - - - - -
- SANITARY SEWER CLEAN OUT
SSMH - - -
- SANITARY SEWER MANHOLE
VCP - - - - - -
- VITREOUS CLAY PIPE
:CC -------LIGHT
POLE
MAINT, - - - - - -
- MAINTENANCE
® -------MANHOLE
® -------WATER
METER
D4 -------WATER
VALVE
O - - - - - -
CORNER FOUND (AS DESCRIBED)
A - - - - - -
60d NAIL SET
O - - - - - -
- CALCULATED POINT
CARRIER BRIDGE
PUMP STATION
METROPOLITAN SEWERAGE DISTRICT OF
BUNCOMBE COUNTY
DATE OF SURVEY. OCTOBER 24T11-1, 2019
HORIZONTAL DATUM= NAD83 (2011)
VERTICAL DATUM= NAVD88
LOCALIZATION POINT: N: 681,066.19', E: 940,721.62'
COMBINED SCALE FACTOR: 0.9997972
UNITS: U.S. SURVEY FEET
DATE OF SEAL: NOVEMBER 27TH, 2019
EXISTING
SITE PLAN
0 1" 2" FILENAME I 01C101l.dwg
SCALE 11 "=20'
SHEET
01 C1 01
n
C
IV
0

1 2 3 4 5
----�� / (n ,
np� // WATER VALVE \\�� \ / / I I t
/yp IN MANHOLE 5 _TO \ / GRAVE �� CONCRETE FLOOR �� l / � I APPROX. LOC. I '
' / STEEL PLATE
\1\ p W_ ASSUMD WATER LINE
4 E 177.49' O� / — _
/ p�� LODE O'�O LOD LOD LOD
- —�— LODE
� �' - 1.5" OIP - - -�� � ELECTRICAL
- — � '�� Box
J I
06 °05,54„ , \
E p SSM \
152 2'8 , —
,� — 1 IM: 1,98 \ �
IN: 1 972.6'
�. i 91ff
��'�►���
� .ww'sme M
��07
c�
WA
'r
�v
SSMH
RIM: 2,046.67'
IN: 2,041.8'
OUT: 2,041.5'
HDR Engineering Inc.
of the Carolinas
440 S. Church Street, Suite 1000
Charlotte, NC 28202
704.338.6700
`♦11♦♦ ••� ��I i�1-C_ —UNA
i i ♦`'- ass=���~ •
�►�all
1 _
♦♦tin
11 ♦� 11 ♦ i♦1 t I� II•�=_=�iwQ
.. 1
•
a
�1
♦
'1
6 7 8
C,530U/
MED WATER LIN� - - / I �-� ��\ p�/ A PHALT
ASWAYA
\_
�_-- /SSMH
RIM:1,982.69' 6 / INV: 1,960.0'
L-kJ
3_-
- 4
LOD
_ L \
...:..:...
OUT: 2,020.2' ASHPALT MILLING 7. UTILITIES SHOWN ARE BASED ON INFORMATION PROVIDED BY OTHERS AND IS NOT
GUARANTEED TO INCLUDE ALL SUCH FEATURES OR EXACT LOCATIONS.
CONTRACTOR TO FIELD VERIFY ALL UTILITIES PRIOR TO CONSTRUCTION. PROTECT
CLEARING AND GRUBBING LIMITS ALL EXISTING FEATURES NOT NOTED FOR REMOVAL.
8. FILL ALL STRUCTURES AND HOLES CREATED FROM DEMOLITION WITH COMPACTED
STRUCTURAL FILL MATERIAL TO A 95% MAXIMUM DRY DENSITY PER ASTM D698.
\ \\ss I I DEMOLITION LIMITS REFER TO TRENCHING DETAILS.
pJ I 9. INSTALL PHASE 1 EROSION CONTROL MEASURES PRIOR TO STARTING DEMOLITION
AND/OR MASS CLEARING. SEE SHEETS 01C401.
S NEW WORK KEYNOTES: O#
10. ALL TIMBER ON THE PROJECT SITE NOTED FOR CLEARING AND GRUBBING MUST
\ SS/O�1. CLEAR AND GRUB APPROXIMATELY 1.24 ACRES. � I BECOME THE PROPERTY OF THE CONTRACTOR, AND MUST BE REMOVED FROM THE
\\ I �/
\ \ \ �JGP S�/ I �2. 378 LINEAR FEET OF CHAIN LINK FENCE TO BE REMOVED. PROJECT SITE.
REFER TO KEYNOTE 2. 11. DISPOSE OF DEMOLITION DEBRIS IN ACCORDANCE WITH APPLICABLE FEDERAL,
V STATE AND LOCAL REGULATIONS, ORDINANCES, AND STATUTES.
p\-) 3. TEMPORARY CONSTRUCTION ACCESS ROADWAY. REFER
TO SHEET 01 C401 FOR MORE INFORMATION. 12. EXECUTE ALL WORK WITH CARE TO PROTECT FROM DAMAGE ALL ADJACENT
EXISTING FEATURES THAT ARE TO REMAIN. ANY SUCH DAMAGE SHALL BE REPAIRED
�\ \ Ov 4. SAW CUT ASPHALT FOR CLEAN TIE IN. REFER TO OR REPLACED TO MATCH THE ORIGINAL CONDITION AT NO ADDITIONAL COST TO THE
OU OU ' KEYNOTE 7. OWNER (MSD).
5. EXISTING SEWER FORCE MAIN TO BE ABANDONED. 13. PROTECT ALL EXISTING TREES OUTSIDE OF CLEARING LIMITS.
6. EXISTING GRAVITY SEWER LINE AND MANHOLES TO BE 14. EXISTING PUMP STATION, PAVING, FENCING, AND ALL APPURTENANCES ASSOCIATED
ABANDONED. WITH THE EXISTING PUMP STATION ARE TO REMAIN UNTIL THE PROPOSED PUMP
STATION CONSTRUCTION HAS BEEN COMPLETED AND IS FULLY OPERATIONAL.
7. MILL 1.5" ASPHALT FOR OVERLAY. TIMING OF THE DEMOLITION OF THE EXISTING PUMP STATION MUST BE
COORDINATED WITH METROPOLITAN SEWERAGE DISTRICT.
N.C.B.E.L.S. License Number: F-0116
PRELIMINARY
ISSUE DATE DESCRIPTION
PROJECT MANAGER MATTHEW A. SHULTZ
DESIGNED BY C.GIGLIOTTI,J.CAUSEY
CHECKED BY J. CAUSEY
DRAWN BY C. GIGLIOTTI
PROJECT NUMBER 10194380
PRELIMINARY
NOT FOR
CONSTRUCTION
OR
RECORDING
Q��'�AN SEWc%.
<9�
Cu+urr,
CARRIER BRIDGE
PUMP STATION
METROPOLITAN SEWERAGE DISTRICT OF
BUNCOMBE COUNTY
PUMP STATION SITE
CLEARING AND
DEMOLITION PLAN
0 1" 2" FILENAME 01C102.dwg
00019
SCALE 1 "=20'
SHEET
01 C102
0
c
IQ

HDR Engineering Inc.
of the Carolinas
440 S. Church Street, Suite 1000
Charlotte, NC 28202
704.338.6700
N.C.B.E.L.S. License Number: F-0116
PRELIMINARY
ISSUE DATE DESCRIPTION
PROJECT MANAGER MATTHEW A. SHULTZ
DESIGNED BY C.GIGLIOTTI,J.CAUSEY
CHECKED BY J. CAUSEY
DRAWN BY C. GIGLIOTTI
PROJECT NUMBER 110194380
PRELIMINARY
NOT FOR
CONSTRUCTION
OR
RECORDING
SEWER4
OQ 10�cP
p
r�
a9ua saj&00 Q
VP
COUNTY, 140R:0"
CARRIER BRIDGE
PUMP STATION
METROPOLITAN SEWERAGE DISTRICT OF
BUNCOMBE COUNTY
SITE LAYOUT AND
CONTROLS PLAN
0 1" Z, FILENAME I 00C103.dwg
SCALE 11 "=20'
SHEET
01 C103

HDR Engineering Inc.
of the Carolinas
440 S. Church Street, Suite 1000
Charlotte, NC 28202
704.338.6700
N.C.B.E.L.S. License Number: F-0116
PRELIMINARY
ISSUE DATE DESCRIPTION
PROJECT MANAGER MATTHEW A. SHULTZ
DESIGNED BY
C.GIGLIOTTI,J.CAUSEY
CHECKED BY
J. CAUSEY
DRAWN BY
C. GIGLIOTTI
PROJECT NUMBER
10194380
PRELIMINARY
NOT FOR
CONSTRUCTION
OR
RECORDING
SEWER40Z
c0�e a9u$ salubi�s GPP
COUNTY,
CARRIER BRIDGE
PUMP STATION
METROPOLITAN SEWERAGE DISTRICT OF
BUNCOMBE COUNTY
1
GRADING AND
DRAINAGE PLAN
FILENAME 101C201.dwg
SCALE 1 1 "=20'
SHEET
01C201

1
OU OU OU
S 14 ° 17'24" \,
E 177.49'
3
19
2
RIP RAP PROTECTION •
.0
_ ••
�6
.IP
SEDIMENT BAFFLES
TEMPORARY
•
C!
5
C.1
7
)X. LOC.
PLATE
8
\o ss �
I & i
IF
ASSUMED WATER LI / 1A'
,E ROCK OUTLET (TYP) RO — N�\ — — — — / \ I
\--- �S SSIMH I
SILT FENCE (TYP) PER DETAIL SF S� �` RIM: 1,982.69'
C3 SHEET 010510 SS ` I \ INV: 1,960.0'
CE CONSTRUCTION ENTRANCE I / I
N�
•
• • •.�•r0•�%•���P�•i•�.• A ■
��! 1 ► ! • 1e. .i � ..: L•�'. � •�_ _,__ .•- - -_ 'try■ � � L•_ � .�-v
�� \\\\\\ 1 �►G� \ 1 Sl /- ��— -- �,(5/010514) —__--—_—_— --- a
Sly CARB __—
\�\�\� \�\\\ s i �� % �— SCR \------------- --- -1—
\\\ \ \�\\\� -L Sl Sl \��\ / J UB \--------------- NT 401-40��
\ ��\ `� --_ _ --`---- — \� \ / / /LID I WET WELL A P �{ p,LT P Av QO —4O� — �� \\ O \
C/
TEMPORARY SWALE (TYP) — TS /l / / I w w n— —401 �� j � \\ ss
60-1
/
SLOPE DRAIN _ -- \ / QO � � '
(3/01 C511) — — _ _ — —�� \ ----� \ \\ I I I Z eoN-CFzE Or 0
PROGRESS ENERGY OF ` \\ ---- _ \ \ \ \ I I I o FM — I I O
\ \ ` \ ✓ - \\\ \ \ I BUILDING I METROPOLITAN SEWERAGE DISTRICT-
THE CAROLINAS ,---------\\ \ \
\\\\� ��-_----�\\\\ \ \ I o I w .m 9638-91-9330
\ \ \ \ \ TREE PROTECTION (TYP) \ D.B. 602, P. 345 \ \ \� _ _ \ \\ \ I MAINT. \ -- ssl I
\ \ TP \ i - - \ \\\\\ I w \ D.B. 1034, P. 103 - - \\ 1 \
(2;°\5 ?\ P.B. 68 P. 55 \ i \\\ LID 8
\ \ \ \\ \
\ \ \ \ \ \ I SEDIMENT TUBE (TYP) \
5/01 C513 \ \ ST M \ I / / /� //j / �/ i ��' D
M
.M
\ IN, \ \ ��\ \ \ \ \ �\ \ 1 \ / // - \ \\ `\ o S
\ \ \ / / / \� / / / i / / / / i \\
SP
ss
DROP INLET 1 S EROSION AND SEDIMENT CONTROL LEGEND
\\ --GR: 2 023.07' `
\ \ \ \ / //— \ IN:2018.9 \ SS
SSMH
RIM: 2,020.63
IN: 2,015.4'
OUT: 2,015.0'
-------- _ _ _ _ 1.5" OIP \ O S a"\I 'P DROP INLET
� `\ \ ` \� \ \� \\ `\ ` \ \ \\ \ \ 1� I \ l � ✓ i� /�� �� �— — — __----- \ v S GR: 2,023.8'
S
0
00
I _
\o ss I \ \ \ \ Ss I I ,pv,
s \ \\ \ \\ cP s� I Gg�Cs
Off/ \ \ss\\
SSMH � Off\ U 00
RIM: 2,046.67'0
IN: 2,041.8'
OUT: 2,041.5'
HDR Engineering Inc.
of the Carolinas
440 S. Church Street, Suite 1000
Charlotte, NC 28202
704.338.6700
N.C.B.E.L.S. License Number: F-0116
PRELIMINARY
ISSUE DATE DESCRIPTION
PROJECT MANAGER MATTHEW A. SHULTZ
DESIGNED BY
C.GIGLIOTTI,J.CAUSEY
CHECKED BY
J. CAUSEY
DRAWN BY
C. GIGLIOTTI
PROJECT NUMBER
10194380
PRELIMINARY
NOT FOR
CONSTRUCTION
OR
RECORDING
OUT: 2,020.2'
1. SEE LEGEND ON SHEET 01C001.
2. SEE EROSION CONTROL NOTES, CONSTRUCTION SEQUENCE,
AND SEEDING SPECIFICATIONS ON SHEET 010512.
3. SEE SHEET 010512 FOR NCG01 GROUND STABILIZATION AND
MATERIALS HANDLING, AND NCG01 SELF INSPECTION SHEET.
4. SEE SHEETS 010512 THROUGH 010515 FOR EROSION CONTROL
NOTES AND DETAILS.
5. NO EARTHWORK/LAND DISTURBANCE SHALL BE PERFORMED
UNTIL ALL PHASE EROSION AND SEDIMENT CONTROL DEVICES
ARE IN PLACE AND HAVE BEEN INSPECTED.
6. EQUIPMENT AND/OR TRUCK TIRE CLEANING STATIONS(S) SHALL
BE ESTABLISHED AS NECESSARY TO ENSURE THAT NO
MUD/SEDIMENT MIGRATES FROM THE CONSTRUCTION SITE TO
THE ADJACENT PUBLIC ROADS.
7. SOD (SAND BASED CENTIPEDE) ALL DISTURBED PERVIOUS AREAS
WITHIN THE LIMITS OF DISTURBANCE ONCE BROUGHT TO
FINISHED GRADE UNLESS OTHERWISE SPECIFIED. SEE
LANDSCAPE PLANS FOR MORE INFORMATION.
8. TOTAL LAND DISTURBANCE = 1.91 ACRES
9. CONTRACTOR MUST ENSURE REQUIRED MAINTENANCE OF
EROSION CONTROL MEASURES.
Qo .. , p N S EWER40�
a
ay�8 9n$ a aiuUt'ca GP4
F 00ONT v,
CARRIER BRIDGE
PUMP STATION
METROPOLITAN SEWERAGE DISTRICT OF
BUNCOMBE COUNTY
SF
SF SF SF SILT FENCE
TP
TP TP TREE PROTECTION FENCE
TS
TS >— TS >— DIVERSION SWALE
RIPRAP
CE
CONSTRUCTION ENTRANCE
o�o�o�o�o�o�o�o�o�o�o�o�o�o�o�o�o�
RO
SILT FENCE ROCK OUTLET
ST
SEDIMENT TUBE
INLET PROTECTION
IP
J BLOCK & GRAVEL CURB
INLET SEDIMENT FILTER
�
YARD INLET SEDIMENT FILTER
0
LOD LOD LIMITS OF DISTURBANCE
OP
RIPRAP OUTLET PROTECTION
SB
SEDIMENT BAFFLE
SD
SLOPE DRAIN
EM
EROSION CONTROL MATTING
EROSION CONTROL
PLAN PHASE 1
0 1" 2" FILENAME �01C401.dwg
SCALE 1 1 "=20'
SHEET
01 C401
0
C
C

1 2 3 4 5 6 7 8
� 1
1 RIP RAP PROTECTION OUTLET OP TEMPORARY CONSTRUCTION EASEMENT
�\ (4/01 C514) O LOD--7.—. �% SILT FENCE ROCK OUTLET (TYP) RO
LOD _ LOD LODE LOD �'``OD � _ (1/010514) O
O LOD
OD
— LOD LOD �° _ _ 1 - - - LO - - - IP ",__-_'�P—Z�� - - - ,` �o o ,/ FRENCH BROAD
SF — _� RIVER PARK —
IL
\ T �\ SILT FENCE (TYP) PER DETAIL SF E CONSTRUCTION ENTRANCEF
0 \ 1 �%'�� (3/01 C514) O O (2/01 C514)
ILL,V
— — — — — . _—
D LOD
IN681516.65
- .nn'A 13 \ Ce x TEMPORARY
\ / X CONCRETE WASHOUT ---
(2/010513) ` ABC STONE ACCESS ROAD
(5/01 C514)
\ N 681421. 4/ /----------------
E 939911 96 / / ��— — — — — — — — --------_ __ Q01
— — — — — — — — — —
C101
°° l
--FIFE: 1993.00(30
90 _—W
TREE PROTECTION (TYP)
TP
(2/010515)
� \ \ INLET PROTECTION (TYP),,/
(1/010513) / IP — — — \ \\ D'
D
I
EROSION AND SEDIMENT CONTROL LEGEND
\ N,
N\
10
\\\
EROSION CONTROL MATTING EM
PER DETAIL C7 SHEET 010511 0 \
\ \ \ \ \ \ \ ROPERTY LINE �
HDR Engineering Inc.
of the Carolinas
440 S. Church Street, Suite 1000
Charlotte, NC 28202
704.338.6700
N.C.B.E.L.S. License Number: F-0116
PRELIMINARY
ISSUE DATE DESCRIPTION
PROJECT MANAGER MATTHEW A. SHULTZ
DESIGNED BY
C.GIGLIOTTI,J.CAUSEY
CHECKED BY
J. CAUSEY
DRAWN BY
C. GIGLIOTTI
PROJECT NUMBER
10194380
PRELIMINARY
NOT FOR
CONSTRUCTION
OR
RECORDING
GENERAL SHEET NOTES:
1. SEE LEGEND ON SHEET 01C001.
2. SEE EROSION CONTROL NOTES, CONSTRUCTION SEQUENCE,
AND SEEDING SPECIFICATIONS ON SHEET 010512.
3. SEE SHEET 01 C512 FOR NCG01 GROUND STABILIZATION AND
MATERIALS HANDLING, AND NCG01 SELF INSPECTION SHEET.
4. SEE SHEETS 010512 THROUGH 010515 FOR EROSION CONTROL
NOTES AND DETAILS.
5. NO EARTHWORK/LAND DISTURBANCE SHALL BE PERFORMED
UNTIL ALL PHASE EROSION AND SEDIMENT CONTROL DEVICES
ARE IN PLACE AND HAVE BEEN INSPECTED.
6. EQUIPMENT AND/OR TRUCK TIRE CLEANING STATIONS(S) SHALL
BE ESTABLISHED AS NECESSARY TO ENSURE THAT NO
MUD/SEDIMENT MIGRATES FROM THE CONSTRUCTION SITE TO
THE ADJACENT PUBLIC ROADS.
7. SOD (SAND BASED CENTIPEDE) ALL DISTURBED PERVIOUS AREAS
WITHIN THE LIMITS OF DISTURBANCE ONCE BROUGHT TO
FINISHED GRADE UNLESS OTHERWISE SPECIFIED. SEE
LANDSCAPE PLANS FOR MORE INFORMATION.
8. TOTAL LAND DISTURBANCE = 1.91 ACRES.
9. CONTRACTOR MUST ENSURE REQUIRED MAINTENANCE OF
EROSION CONTROL MEASURES.
SEWER4
�oQ %�
�°o�� a9ua salub��6 GQQ'
F COUNTY,
CARRIER BRIDGE
PUMP STATION
METROPOLITAN SEWERAGE DISTRICT OF
BUNCOMBE COUNTY
SF
SF SF SF SILT FENCE
TP
TP TP TREE PROTECTION FENCE
TS
TS >- TS >- DIVERSION SWALE
M, ! RIPRAP
Eo
ENTRANCE
�uovououououououououououovouououou�
0000000000000000oCONSTRUCTION
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 00 0 0 0 0 0 0 0 0 0 0 0 0 0 0-
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
ROr,
. _ l
SILT FENCE ROCK OUTLET
ST
SEDIMENT TUBE
INLET PROTECTION
J BLOCK & GRAVEL CURB
- INLET SEDIMENT FILTER
YARD INLET SEDIMENT FILTER
0
LOD LOD LIMITS OF DISTURBANCE
OP
RIPRAP OUTLET PROTECTION
SB
SEDIMENT BAFFLE
SD
SLOPE DRAIN
EM
EROSION CONTROL MATTING
EROSION CONTROL
PLAN PHASE 2
0 t , Z, FILENAME 01C402.dwg
SCALE 1 "=20'
SHEET
01 C402
❑C
C
14
I

Y
g
P
/ 6 RHJJ
J Lo
MH #21
a ('r — -� (LOCKDOWN / WATERTIGHT)
STA. 56+60.11 LINE "A"
LLB PROVIDE NEW 10' DIA. MH
Lu It GRASS
2LLJ ,
LL.� ® S60 50' 04"W 505.55 LF
co \ ��
W
Z I \ ��� \ ----
_ \ \ \ GRASS
q spA/ ,A
p
C S q Ty
C \
\\
S\ \ MH 65-21372
� RIM:
1,981.96'
\ �INV. 1,963.5'
Tc�g1 Sp �Oy
s,�q 9Z
��,cFFi1 ,T
\
2010
Q
C
J
199 `+° rn
�L�
� u
�U)0�
1980
1970
1960
I el-Tvi
INV. IN = 1954.43'
INV 01 IT = 1A.rd
1940
1930 '
56+50 57+00
0
0
u
50
0
25 50
0
nl C3KAF'HIU bUALt
f
i
60"DIP @0.02%
MH #23 VENTED
\ \ \ I (LOCKDOWN / WATERTIGHT)
\ STA.64+87.78
\ \\ \ I PROVIDE NEW 10' DIA. MH
N66° 42' 40"W 64.42 LF
MH #24
\ao \\ (LOCKDOWN / WATERTIC
\\\ \ \ STA. 65+52.20 LINE "A"
\ \ PROVIDE NEW 10' DIA. M
CULTIVATION \
�,F \ \\\\\\ \\\ \
.orb TBM - 60d NAIL
NC GRID\ \ \ \\\ \ \
NAD83(2011) \\ \
COORDS:
N:679,864.87', \\ \
E:934,324.41'
� �
RIP RAP, TYP. �•• A� � �� ��� V AVv v \ \ ,
71,
C'MpO \
IN, Rq
Repo&F'\
\� N MH #22 \' • �\\\ \� \ OAF \ ST Ci \
(LOCKDOWN / WATERTIGHT)
I STA. 61 +65.66 O
PROVIDE NEW 10' DIA. MH
co
/ X. \\ \ \ \\ \ \
MH#25
FLORAJ. WILSON \ \ (LOCKDOWN / WATERTIGHT)
/ D.B. 5674, P. 195 STA. 70+52.20 LINE "A" t
` P.B. 12, P. 28 \
/ PIN:9638-40-2229 PROVIDE NEW 10' DIA. MH \
SANITARY SEWER PLAN (STA. 56+50-00 — STA. 71 + 00.00)
a--' Q0
U
CD
� O �
Q �o
00+
OLU
m ter\
U
n� z w cn
VJ w L/O O N L� Z N I I Vi o
�U-I O
cllz�?—I LL O Q U
� mow+ 0c�
O ZD LuLin
O O O�Q 2 Q
Y 2
v
Y 0 W
Z
U
o U Q
co co
O O
z
0
a
U
co
LU
0
SCALE: 1 "= 5 0' Z
co
W
0
8-1
6
2010 Z.
Q
m
J
fD �
M
Lo -4
04
04 I
(n 0'
57+50 58+00 58+50 59+00 59+50 60+00 60+50 61+00 61+50
100 150
1 INCH = 50 FEET
Q -2000
--
� J
J N p
RIP RAP, TYP. Lu o N o
�0000� CV Ln ��
j°0000 +M Norn -1990
+ M d `o EXISTING GROUND
FRENCH BROAD RIVER cy) � N C° II = Q
I I Q U)
co 0�
Lu,
Lu l/ — - - — _ _ _ — - -1980
J '
�ILu
LUIU
RIVER BOTTOM -1970
— ELEV .1966.11'±
d e a A a A A .4 G a
a 1 n
vd A da° .4 _ - a l a 4 d
� 60 DIP @ 0.02%
CONCRETE ENCASEMENT, 241 LF
60" INV. IN = 1954.54' (SW)
60" INV. OUT = 1954.54' (NE)
62+00 62+50 63+00 63+50 64+00
60"DIP@0.50%
60"DIP @0.20%
Z
W
co._
o
Z �
rn
u) L
rn
�
II
II
O
Z
>
> O
z
z
z j
j
-
- z
z
CD
CD CD
0
co
co
64+50 65+00 65+50 66+00 66+50 67+00 67+50 68+00
SANITARY SEWER PROFILE (STA. 56+50-00 — STA. 71 +00.00)
SCALE. HORIZ: 1 "= 50' ; VERT. 1 "=101
68+50 69+00 69+50 70+00
co
N
r'� co
Lo CV
rn
rn
z Iz
olm
70+50
•.E
950
940
7--�-0 30 CJ�R�CT• byixj�
9cd
Z
y
cn
J� Z
�o
6- V
O
�13 W

Biological Opinion
Carrier Bridge Pump Station in
Asheville, Buncombe County, North Carolina
Service Log #23-561
Service ECOSphere Project Codes 2023-0036082 & 2023-0088477
U.S.
FISH 8 WILDLIFE
SERVICE
Prepared by:
U.S. Fish and Wildlife Service
Asheville Ecological Services Field Office
160 Zillicoa Street
Asheville, North Carolina 28801
Janet Mizzi
Field Supervisor
Asheville Ecological Services Field Office
Asheville, North Carolina

Table of Contents
ConsultationHistory..................................................................................................................................... 4
1. Introduction...............................................................................................................................................
4
2. Proposed Action........................................................................................................................................
5
2.1 Action Area.........................................................................................................................................
5
2.2 Project Description..............................................................................................................................
6
2.2.1 Carrier Bridge Pump Station Replacement...................................................................................
6
2.2.2 36-inch-diameter Force Mains.....................................................................................................
6
2.2.3 60-inch diameter Influent Gravity Sewer Interceptor...................................................................
7
2.2.4 French Broad River Pipeline Crossings........................................................................................
7
2.2.5 48-inch diameter and 54-inch diameter Gravity Sewer Rehabilitation .........................................
8
2.2.6 Site Access...................................................................................................................................
8
2.2.7 Staging and Laydown Areas.........................................................................................................
8
2.2.8 Construction Timing.....................................................................................................................
8
2.2.9 Facility Operation and Maintenance............................................................................................. 9
2.3 Conservation Measures.......................................................................................................................
9
3. Range -Wide Status of the Species...........................................................................................................
10
3.1 Appalachian Elktoe...........................................................................................................................
10
3.1.1 Species Description and Life History..................................................................................
10
3.1.2 Species Status and Distribution...........................................................................................
11
3.1.3 Threats to the Species..........................................................................................................
12
4. Environmental Baseline in the Action Area............................................................................................
13
4.1 Appalachian Elktoe in the Action Area.............................................................................................
13
5. Effects of the Action................................................................................................................................
14
5.1 Stressor —Direct Impacts..................................................................................................................
14
5.2 Stressor — Pipeline Crossings and Cofferdams..................................................................................
14
5.3 Stressor — Temporary and Permanent Streambank Stabilization.......................................................
15
5.4 Stressor — Light, Noise, and Vibration..............................................................................................
15
5.5 Stressor — Inadvertent Spills..............................................................................................................
16
5.2 Cumulative Effects............................................................................................................................
16
6. Conclusion...............................................................................................................................................
17
7. Incidental Take Statement.......................................................................................................................
18
7.1 Amount or Extent of Take.................................................................................................................
18
7.2 Reasonable and Prudent Measures....................................................................................................
18
7.3 Terms and Conditions.......................................................................................................................
18
8. Conservation Recommendations.............................................................................................................
19
9. Reinitiation Notice..................................................................................................................................
20
10. Literature Cited.....................................................................................................................................
20
11. Figures and Tables................................................................................................................................
22
Figure1...................................................................................................................................................22
2

Figure2...................................................................................................................................................
23
Figure3...................................................................................................................................................
24
Figure4...................................................................................................................................................
25
Figure5...................................................................................................................................................
26
Table1.....................................................................................................................................................
27
Table2.....................................................................................................................................................
28
3

Consultation History
March 1, 2021:
The HDR Engineering Inc. (HDR) introduces proposed project and requests
technical assistance related to listed species surveys.
July 12, 2021:
Project proponents submit preliminary project description and locations of
proposed river crossings.
July 14, 2021:
HDR provides preliminary project description, including an alternatives analysis,
cost analysis, and potential impact avoidance and minimization measures in
interagency pre -application meeting.
July 15, 2021:
The U.S. Fish and Wildlife Service (Service) provides technical assistance for
developing a complete biological assessment (BA) and referencing definitions of
key regulatory terms.
July 23, 2021:
Telephone and email exchanges wherein the Service provides examples of a
relevant BA and Biological Opinion (BO) to project proponents.
September 22, 2022:
The Service conducts freshwater mussel surveys with project proponents.
November 18, 2022:
HDR submits a Preliminary Jurisdictional Determination Package to the U.S.
Army Corps of Engineers (USACE).
May 1, 2023:
HDR and USACE submits Preconstruction Notification (PCN) and BA to the
Service via DOD SAFE link.
May 3, 2023:
Telephone exchange between the USACE and the Service regarding appropriate
effect determinations for listed bat species and Appalachian elktoe considering
reclassification of northern long-eared bat and mussel survey results.
May 15, 2023:
Meeting with USAGE, Service, and HDR to discuss outstanding information
needs in the BA.
June 1, 2023:
HDR provides meeting notes summarizing May 15, 2023, meeting and indicates
that they are preparing responses to the Services information requests.
June 16, 2023:
HDR provides additional information to the Service in support of the USACE's
BA.
June 27, 2023:
Telephone exchange between the USACE and Service with brief discussion
about cumulative effects and additional information provided by HDR.
August 22, 2023:
The Service notifies the USACE that we consider the BA to be complete.
October 4, 2023:
Email exchange from Service to USACE and project proponents providing
progress update on draft BO.
October 30, 2023:
The Service provides the USACE a signed BO for the proposed project.
December 8, 2023:
The USACE requests amendments to Conservation Measure #8.
1. Introduction
A biological opinion is the document that states the opinion of the Service in accordance with section 7 of
the Endangered Species Act of 1973, as amended (16 U.S.C. 1531-1543) (Act), as to whether a federal
action is likely to jeopardize the continued existence of species listed as endangered or threatened; or
result in the destruction or adverse modification of designated critical habitat.
Formal consultation was requested by the USACE, who is the lead federal action agency for this project
for section 7 purposes. This document transmits the Service's biological opinion (Opinion) based on our
review of the proposed Carrier Bridge Pump Station project (CBPS) in Asheville, Buncombe County,
North Carolina (NC), and its effects on the federally endangered Appalachian elktoe (Alasmidonta
raveneliana).
In addition to Appalachian elktoe, suitable roosting, foraging, and/or commuting habitats occur within the
proposed action area for the federally endangered gray bat (Myotis grisescens), northern long-eared bat
(Myotis septentrionalis), and the proposed endangered tricolored bat (Perimyotis subflavus). The USACE
has determined that the proposed action may affect but is not likely to adversely affect these species and
C!

has requested our concurrence. Informal consultation for these bat species is provided by separate
correspondence.
This Opinion is based on information provided in the May 1, 2023, PCN, the BA dated March 28, 2023
(embedded within the PCN), additional information from HDR provided June 16, 2023, communications
with the USACE and project proponents since March 1, 2021, communications with experts on the
affected species, and other sources of information. A complete administrative record of this consultation
is on file at the Asheville Ecological Services Field Office.
2. Proposed Action
As defined in the Service's section 7 regulations (50 CFR 402.02), "action" means "all activities or
programs of any kind authorized, funded, or carried out, in whole or in part, by Federal agencies in the
United States or upon the high seas." The "action area" is defined as "all areas to be affected directly or
indirectly by the Federal action and not merely the immediate area involved in the action." The effects of
the action must be considered in conjunction with the effects of other past and present federal, state, or
private activities, as well as the cumulative effects of reasonably certain future state or private activities
within the action area.
The Metropolitan Sewerage District of Buncombe County, NC (MSD, Applicant) is seeking authorization
from the USACE to impact jurisdictional waters of the United States associated with improvements to
existing wastewater infrastructure. The proposed action would entail the construction of a new pump
station, replacement of existing influent gravity sewer lines and the replacement of existing force main
pipelines to accommodate growing demand. The USACE's BA indicates that the CBPS project would
address service demands for the next 50 years.
According to the BA and materials provided by the Applicant, the CBPS project would be completed in
approximately 47 months beginning November 15, 2024, and would be complete by October 12, 2028
(Table 2). Detailed project descriptions are provided in the sections below and in the USACE's BA.
2.1 Action Area
The action area for this project is approximately 300 acres in extent and is located within or near the
French Broad River (FBR) in Asheville, NC. The action area includes the proposed project footprint, the
French Broad Study Area, and areas that would be used for staging, site access, and all other work areas
(Figures 1 — 3). The action area also includes those areas which may be subject to effects from lighting,
noise, and vibration.
Specifically, the USACE describes the action area to include the following:
• A 40,000 —square-foot (ft) (0.91-acre) construction footprint for a new pump station,
• two parallel 36-inch (in) diameter force main pipes each measuring approximately 1,546 linear
feet (ft) (including a 250-linear-ft crossing of the FBR, Figure 4),
• A 60-in diameter gravity sewer pipe connecting to the new CBPS measuring approximately 850
linear ft (Figure 4),
• A 60-in diameter gravity sewer pipe crossing the FBR measuring approximately 300 linear ft
(Figure 5),
• 450 linear ft of an existing 54-in diameter pipe along Lyman Street to be repaired with an
interceptor lining (Figure 4),
• Approximately 1,044 linear ft of existing 48-in diameter/54-in diameter pipe along Lyman Street
to be replaced with a larger 60-in diameter pipe (Figure 4),
5

• A reach of the FBR that is 0.25 river mile (1,320 ft) upstream and 0.5 river mile (2,640 ft)
downstream of the proposed cofferdams required for the open -cut installation of the 60-in
diameter gravity sewer pipe and 36-in diameter force main pipes (Figures 2, 4, and 5)
• Approximately 320 linear ft of bank stabilization on the west bank and approximately 330 linear
ft of bank stabilization on the east bank of the FBR for the proposed 36-in diameter force mains
crossing (North River Crossing, Figure 4).
• Approximately 600 linear ft of bank stabilization on the north bank and approximately 400 linear
ft of bank stabilization on the south bank of the FBR for the proposed 60-in diameter gravity
sewer pipe crossing (South River Crossing, Figure 5).
• Potential construction laydown areas located within a pre -cleared park and/or agricultural crop
areas near the proposed construction areas (exact locations to be determined by the contractor and
coordination efforts with the appropriate landowners).
• A proposed access route located on Biltmore Estate property (approximately 3 miles in total
length) to be used for construction access to the proposed work area for the South River Crossing
(Figure 3).
2.2 Project Description
The CBPS project is composed of several components which are summarized below. Detailed
descriptions of these components are also provided in the USACE's BA.
2.2.1 Carrier Bridge Pump Station Replacement
The new 4,200-square-ft, two -level CBPS replacement facility will be constructed north of the existing
pump station (Figure 2). The new facility would contain two influent screens with a 1.5-in screen opening
size, each rated for 50 million gallons per day peak inflow. The total area of the facility including
appurtenances for vehicle access is 0.1 acres. The total work area required to construct this component is
approximately 0.3 acre and 0.21 acre of woody vegetation (i.e., trees and shrubs) would be removed
between November 15, 2024, and April 1, 2025 (Table 1 and Table 2).
The existing CBPS will remain in operation while the new CBPS is being constructed. Once construction
of the new CBPS is completed and in service, the original station will be out of service, demolished, and
its former site will be incorporated into the new station's paved driveway and concrete pavement.
Disturbed areas not paved for parking would be revegetated with native plant species.
2.2.2 36-inch-diameter Force Mains
Two parallel 36-in diameter force mains, one duty and one backup, would replace the existing 24-in
diameter ductile iron pipe (DIP) force main. These force mains would be installed between a proposed
CBPS site on the west side of the FBR and the existing 54-in diameter interceptor located on the east side
of the FBR (Figure 4). Construction of the new force mains will be conducted by open -cut dry -ditch
(trenching) methods. The two parallel 36-in diameter force mains will measure approximately 1,546
linear ft in total, including an approximately 250 linear ft crossing under the FBR (referred to as the North
River Crossing).
The existing 24-in diameter force main that crosses FBR will be abandoned in place by cutting and
capping the existing pipe. Project proponents indicate that this line will not be kept in service because it is
considered a "high risk force main" due to its age and submergence in the riverbed and would present an
environmental hazard under the increased demand for the new CBPS.
The upland areas adjacent to the proposed parallel 36-in diameter force main alignments consist of upland
woodland and open grassland areas (i.e., French Broad River Park and overhead transmission line right-
of-way). The total upland construction areas are approximately 1.48 acres in extent. Within this proposed
G9

right-of-way area, approximately 0.98 acre of woody vegetation would be removed between November
15, 2025, and April 1, 2026 (Table 1 and Table 2).
2.2.3 60-inch diameter Influent Gravity Sewer Interceptor
Approximately 850 linear ft of a single 60-in diameter gravity sewer interceptor pipeline would be
installed to convey wastewater flows into the new CBPS. The new 60-in diameter gravity sewer
interceptor pipe would connect to the existing 48-in diameter South French Broad interceptor pipe just
south of Amboy Road near the Amboy Road bridge over the FBR (Figure 4). This project component also
includes construction of an approximately 300-linearft river crossing segment consisting of a 60-in
diameter pipe under the FBR just west of the Carrier Park Sports Facility (Figure 5). The new pipeline
would be installed by open -cut dry -ditch (trenching) methods described in detail in the sections below and
in the USACE's BA.
This project component would require disturbance to approximately 0.95 acre of which, 0.86 acre of
woody vegetation would be removed. Tree removal associated with the Amboy Road crossing would
occur between November 15, 2024, and April 1, 2025, and tree removal associated with the FBR crossing
would occur between November 15, 2025, and January 1, 2026 (Table 1 and Table 2).
The purpose of this pipe crossing (referred to as the South River Crossing) is to accommodate projected
needs for future system upgrades slated for construction in approximately 2035. As such, the proposed
60-in diameter pipe installed under the river as part of this project will be capped at both ends until MSD
is ready to proceed with pipeline system upgrades, which would connect to this crossing point. This
consultation does not address impacts or cover take of listed species associated with system upgrades
which are projected for construction in approximately 2035.
Since the South River Crossing consists of a gravity pipeline, its final placement would dictate the depth
of the pump station. Although the sewer line at the South River Crossing will not be operational once the
CBPS project is complete, its installation and final elevation is essential for constructing the new pump
station and other components of this project.
2.2.4 French Broad River Pipeline Crossings
The North and South River Crossings of the FBR referenced in the two sections above would be installed
using trenching methods (open -cut dry -ditch) at the respective sites (Figures 2, 4, and 5). Project
proponents first considered the use of micro -tunneling methods to accomplish crossings of the FBR.
However, the extent of solid bedrock material under this area of the FBR and required tunnel depth under
the streambed (minimum 18 ft) would expand the action area much further into upland areas and rendered
these methods infeasible.
For each of the two sites, a trench would be mechanically excavated under dry operating conditions with
the aid of U-shaped coffer dams. Coffer dam and pipeline installation would occur in two stages at each
of the two crossings. Each of the four stages would entail the placement of a temporary cofferdam that
spans approximately 130 linear ft from the riverbank into the FBR and would be approximately 50 ft
wide. The area within the cofferdam would then be dewatered, excavated, the pipeline segment would be
installed, the excavated area would be backfilled to pre-existing riverbed elevations. The cofferdam
would then be reinstalled adjacent to the first stage and the construction sequence described above would
be repeated.
Staged cofferdam placement would ensure that FBR streamflow is not completely obstructed at any time.
The Applicant modeled streamflow hydraulics (via HEC-RAS) for 2-year, 5-year, 10-year, and 25-year
storm events and determined that either sheet pile (with king piles) or braced box sheet pile cofferdam
7

types would be used. Cofferdams would need to extend at least 12 ft above the riverbed to withstand a 2-
year storm event. The USACE's BA (Section 2.2.8) indicates that cofferdams at the North and South
River Crossings would remain in the FBR for six months at each crossing.
Cofferdam installation would constrict streamflow volume into a smaller cross -sectional area which will
increase flow velocity and shearing forces on adjacent streambanks. Riparian habitats adjacent to the FBR
pipeline crossings are composed of erodible sand and silt substrates structured by root systems of
herbaceous and large woody vegetation. To prevent the potential for project -mediated streambank erosion
and sedimentation of aquatic habitats, the Applicant proposes to install temporary bank stabilization
measures which may include the use of riprap, articulated concrete blocks, and/or gabion mattress. The
North and South River Crossings would entail approximately 0.87 acre and 1.43 acres of temporary bank
stabilization, respectively (Figures 4 and 5). Once the pipeline crossing is completed, the temporary bank
stabilization measures would be removed and replaced with permanent natural bank stabilization using
bioengineering techniques to strengthen and return the bank slopes to vegetated riparian habitats.
This project component would entail approximately 0.45 acre and 0.5 acre of woody vegetation removal
at the North and South River Crossings, respectively. Associated tree clearing would be accomplished
between November 15, 2025, and April 1, 2026 (Table 1 and Table 2).
2.2.5 48-inch diameter and 54-inch diameter Gravity Sewer Rehabilitation
Approximately 1,044 linear ft of deteriorated 48-in diameter and 54-in diameter pipe will be replaced
with 60-in diameter pipeline between Lyman Street and the FBR (Figure 4). This area is dominated by
maintained open grassy areas and would require up to 0.1 acre of tree clearing (Table 1). Any tree
clearing associated with the rehabilitation of the existing 54-in diameter sewer line would be
accomplished between November 15, 2025, and March 1, 2026 (Table 1 and Table 2). Any tree clearing
associated with the rehabilitation of the 48-in diameter sewer line would be accomplished between
November 15, 2027, and January 1, 2028 (Table 1 and Table 2).
2.2.6 Site Access
The CBPS project would utilize existing roads within the action area for site access and would not create
new access roads. Construction activities near the North River Crossing would utilize Amboy Road,
existing park roads within Carrier Park and Lyman Street. Construction activities near the South River
Crossing would utilize existing private roads within the Biltmore Estate and Highway 191. Portions of
private roadways may require widening but would not exceed 25 ft from the existing centerline. Proposed
site access would not require modification or extension of any existing culvert or bridge crossings.
This component of the project would require no more than 2.60 acres of tree clearing (Table 1). However,
this estimate represents a "worst -case" scenario. Vegetative removal would be limited to what is
necessary and is likely to be restricted to tree -trimming in most areas and would occur between November
15, 2025 and January 1, 2026 (Table 2).
2.2.7 Staging and Laydown Areas
Staging and laydown areas have not been finalized at this time. However, the Applicant has committed to
ensure that any required staging or laydown areas would occur in areas void of tree and shrub vegetation
and will be adjacent to or within the immediate construction work areas.
2.2.8 Construction Timing
Construction activities would be limited to the hours between 7:OOAM and 7:OOPM, Monday through
Saturday in compliance with the City of Asheville Noise Ordinance. The Applicant has also committed to
P.]

ensure that all construction equipment would be operated in accordance with the manufacturer's
specification and that all standard noise -reducing equipment is properly employed.
2.2.9 Facility Operation and Maintenance
Operation and maintenance of the CBPS project would entail mowing and landscaping around facilities
and utility rights -of -way. Utility corridor easements would be maintained with native herbaceous
vegetation only since deep rooting woody vegetation may threaten pipeline infrastructure.
2.3 Conservation Measures
Conservation measures (CM) represent actions, pledged in the project description, that the action agency
will implement to minimize the effects of the proposed action and further the recovery of the species
under review. Such measures should be closely related to the action and should be achievable within the
authority of the action agency. We consider the beneficial effects of conservation measures in making our
determination of whether the project will jeopardize the species.
We appreciate the Applicant's commitment to the CMs described in the USACE's BA which are
summarized below. Some of the USACE's proposed CMs summarized below (CM 3, 5, 6, 7, and 8) are
also intended to avoid or minimize project -mediated impacts to federally listed bat species which are
addressed under separate informal consultation:
CM 1. Ensure all operators, employees, and contractors working in the proposed action area are aware
of environmental commitments associated with the CBPS project including all applicable impact
avoidance and minimization measures.
CM 2. Minimize project -mediated disturbance to the greatest extent feasible to safely implement the
CBPS project.
CM 3. Accomplish all tree clearing activities in the winter/spring from November 15 — April 1 to avoid
the active season for tree -roosting bat species.
CM 4. Prohibit construction activities which generate noise and vibration from occurring at night
(between dusk and dawn). Impulsive noise and vibration shall be reduced with the use of noise -
absorption padding or matting to dampen those effects. If blasting is required for excavation
within the riverbed, blasting mats shall be used to reduce the effects of noise and vibration.
CM 5. Any construction lighting shall be shielded and directed away from suitable habitat for listed bat
species. Nightwork is not anticipated but would not exceed 14 consecutive days per 12-month
period and would not exceed a duration of 4 hours after dusk per day.
CM 6. Permanent exterior lighting associated with the CBPS project shall be shielded, down -facing and
of a low intensity to reduce impacts to federally listed bat species which are averse to light.
CM 7. Following construction, re-establish disturbed areas with native vegetation to prevent erosion and
sedimentation, and protect water quality of aquatic habitats within receiving waters. This
measure would also help maintain or improve suitable roosting, forage, and/or commuting
habitats for federally listed bat species.
CM 8. Establish a 50-ft wide forested riparian buffer along each streambank adjacent to the FBR,
Swannanoa River, Moore Branch, unnamed tributaries, and delineated wetlands within the action
area to prevent erosion and sedimentation and protect water quality of aquatic habitats within
receiving waters. This measure would also help maintain suitable roosting, forage, and/or
commuting habitats for federally listed bat species. This conservation measure is exempted from
each bank of the FBR where the re-establishment of riparian forest (and associated root systems)
within the 100-foot-wide utility right of way would damage the pipeline.
CM 9. Conduct a pre -construction mussel survey of the FBR at the North and South River Crossing
areas within 14 days of instream disturbance to detect and relocate any Appalachian elktoe to a
safe location within the FBR. Survey schedule should be coordinated with this office at least 30
days prior to so that we may be available to participate and help identify suitable sites for animal
Z

relocation. Only qualified biologists covered by requisite federal collection permits should
conduct surveys for Appalachian elktoe.
CM 10. A contracted biologist shall be on site during cofferdam dewatering activities to detect trapped
animals (including live mussels and fish which may serve as hosts for Appalachian elktoe) and if
found, relocate them to an appropriate safe location.
CM 11. Cofferdams shall remain in the FBR for the shortest feasible duration and removed as soon as
new pipe segments are installed to prevent unnecessary erosive forces and shear stresses to
streambed and streambank habitats.
CM 12. Cofferdams shall be properly anchored and consider realistic streamflow scenarios to prevent
dislodging, downstream movement, or failure which may exacerbate impacts to aquatic habitats.
CM 13. Cofferdam dewatering inlet hoses shall be screened and equipped with a float to prevent
inadvertent aquatic life entrainment or unnecessary removal of streambed substrates. Water
removed from within the cofferdam shall be filtered before discharged. Discharge sites shall be
chosen to prevent unnecessary secondary erosion and sedimentation.
CM 14. Substrates excavated from the FBR shall be retained in upland areas and returned to match pre-
existing streambed elevations and habitat conditions.
CM 15. Any necessary vegetation removal along streambanks including the FBR, shall be cleared by
hand with vegetation cut at the base to retain bank stabilizing root masses.
CM 16. Implement an approved Stormwater and Pollution Protection Plan to ensure that all erosion and
sedimentation controls are maintained throughout construction at all river and stream crossings
and dewatering discharge locations.
CM 17. All hazardous materials necessary for construction shall be properly stored under cover in upland
areas at least 100 ft from water bodies. Fueling, lubrication, and general equipment maintenance
shall be performed in upland areas or otherwise in a manner that prevents contamination of
surface waters by fuel and oils.
CM 18. Temporary bank stabilization materials used during construction (e.g. rip rap, concrete blocks, or
gabions), shall be removed after construction and replaced using permanent natural bank
stabilization techniques that employ bioengineering and natural channel design methods.
Permanent bank stabilization design shall be developed and approved in coordination with the
Service and applicable state agencies.
3. Range -Wide Status of the Species
3.1 Appalachian Elktoe
Scientific Name: Alasmidonta raveneliana
Status: Endangered
Date Listed: September 3, 1993
Critical Habitat: None designated within the proposed action area
This section summarizes best available data about the life history, population size, distribution, and
threats to the Appalachian elktoe throughout its range that are relevant to formulating an opinion about
the action.
3.1.1 Species Description and Life History
Lea (1834) described the Appalachian elktoe from the FBR system in NC. Its shell is thin but not fragile,
oblong, and somewhat kidney -shaped, with a sharply rounded anterior margin and a broadly rounded
posterior margin. Parmalee and Bogan (1998) cite a maximum length of 8 centimeter (cm). However,
individuals from the Little River (FBR Basin) in Transylvania County and West Fork Pigeon River (FBR
Basin) in Haywood County measured more than 9.9 cm in length (USFWS 2009). The periostracum
(outer shell) of the Appalachian elktoe varies in color from dark brown to yellowish -brown in color. Rays
10

may be prominent in some individuals, usually on the posterior slope, and nearly obscure in other
specimens. The nacre (inside shell surface) is a shiny bluish white, changing to salmon color in the beak
cavity portion of the shell. A detailed description of the shell characteristics is contained in Clarke (1981).
Ortmann (1921) provides descriptions of the soft anatomy.
The reproductive cycle of the Appalachian elktoe is similar to that of other native freshwater mussels.
Males release sperm into the water column, which is then taken in by the female through their siphons
during feeding and respiratory processes. The females retain fertilized eggs in their gills until larvae
(glochidia) fully develop. Gravid female mussels release glochidia into the water and within a few days
they must attach to the appropriate fish host, which they parasitize for a short time while they develop
into juvenile mussels. Juveniles then detach from their fish host and sink to the stream bottom where they
may continue to develop, provided that suitable substrate and water conditions are present (USFWS
2002). The Appalachian elktoe is a bradytictic (long-term) brooder, with the females retaining glochidia
in their gills from late August to mid -June (USFWS 2009). Glochidia are released in mid -June, attaching
to either the gills or fins of a suitable fish host species. Transformation time for Appalachian elktoe occurs
within 18 to 22 days where mean temperatures are 18°C. Appalachian elktoe mussels use a variety of
common fish hosts but appear to specialize on darters and sculpins, which are common in the action area.
3.1.2 Species Status and Distribution
The Appalachian elktoe is known only from the mountain streams of western NC and eastern Tennessee
(TN). It is found in gravelly substrates often mixed with cobble and boulders, in cracks of bedrock, and in
relatively silt -free, coarse sandy substrates (USFWS 1996).
Although the complete historic range of the Appalachian elktoe is unknown, available information
suggests that the species once lived in most rivers and larger creeks of the upper Tennessee River system
in NC, with the possible exception of the Hiwassee and Watauga River systems. In TN, the species is
known only from its present range in the main stem of the Nolichucky River. At the time of listing, two
known populations of the Appalachian elktoe existed: the Nolichucky River, including its tributaries (the
Cane River and the North Toe River); and the Little Tennessee River and its tributaries. The record in
the Cane River was represented by one specimen found just above its confluence with the North Toe
River (USFWS 1996). Since listing, the Appalachian elktoe has been found in additional areas. These
occurrences include extensions of the known ranges in the Nolichucky River (North Toe River, South
Toe River, and Cane River) and the Little Tennessee River (Tuckasegee River and Cheoah River) as
well as a rediscovery in the FBR Basin (Pigeon River, Little River, Mills River, and the main stem of the
FBR). Many of these newly discovered populations are relatively small in numbers and range.
The Appalachian elktoe has experienced declines in two populations across its range. A sudden die -off in
the Little Tennessee River, (once considered the largest and most secure population of this animal),
occurred from 2005 — 2015. During that time, periodic monitoring efforts failed to find any live
individuals. Surveys during 2016 also failed to produce any observations of Appalachian elktoe, but
surveys in 2017, 2018 and 2019 produced very low numbers, indicating a remnant population persists.
Appalachian elktoe also have declined in the lower portion of the Nolichucky River. This animal was
once common in all three tributaries of the Nolichucky River: North Toe, South Toe, and Cane Rivers. In
2008, a fish kill linked to a wastewater plant failure also resulted in the death of most known occurrences
Appalachian elktoe in the Cane River. Beginning in 2013, the Appalachian elktoe population in the lower
South Toe River declined steeply. This decline coincided with a major highway construction project and
only occurred downstream of receiving streams in that project footprint. Appalachian elktoe are still
present in the South Toe River, but at reduced densities. Appalachian elktoe also remain in low densities
within the North Toe River. It appears that the North Toe River population expansion is limited by urban
runoff and mining effects to the river.
11

The other populations of Appalachian elktoe appear to be stable (Tuckasegee, Cheoah, and Pigeon
Rivers) or expanding (FBR). A remnant population known in the Cheoah River since the early 2000's is
undergoing augmented by the NC Wildlife Resources Commission with hatchery -propagated individuals
sourced from the Tuckasegee River. This effort appears to be successful in bringing this population back
to a viable state.
Prior to 2004, the FBR population appeared to be confined to two tributary streams (Little River, Mills
River), but over the last decade the known range of Appalachian elktoe in the main stem of the FBR has
expanded and it now appears to be well established, albeit at low density, over a broad area extending
from the Craggy Dam in Asheville, NC to Rosman, NC.
3.1.3 Threats to the Species
Throughout its historic range Appalachian elktoe declines have been attributed to a variety of factors,
including sedimentation, point and nonpoint-source pollution, and habitat modification (impoundments,
channelization etc.). Low abundance and restricted range of most of the surviving populations make this
species extremely vulnerable to extirpation from a single catastrophic event or activity. Catastrophic
events may consist of natural events, such as flooding or drought, as well as human influenced events,
such as toxic spills associated with highways, railroads, or improperly treated effluent discharges.
Flood disturbances exacerbated by anthropogenic watershed and climatic alterations may be responsible
for large fluctuations in Appalachian elktoe population abundance. Portions of the FBR Basin and most
of western NC experienced catastrophic flooding in late summer 2004 during Tropical Storms Francis,
Ivan, and Jeanne. Numerous dead mussels, including the Appalachian elktoe, were observed in over -wash
areas along the Little Tennessee River after the flood events. Additionally, surveys conducted in the Little
Tennessee River after the flooding yielded noticeably lower catch per unit effort of live mussels,
including the Appalachian elktoe, compared to past survey efforts in this section of the river (USFWS
2009).
Siltation and sedimentation resulting from insufficient erosion controls associated with agriculture,
forestry, transportation, and various developed land uses, are recognized as a major contributing factor to
the degradation of mussel populations (USFWS 1996). Siltation has been documented to be extremely
detrimental to mussel populations by degrading physical habitats and water quality, increasing potential
exposure to other pollutants, smothering and/or suffocating animals (Ellis 1936, Marking and Bills 1979).
Sediment accumulations of less than an inch have been shown to cause high mortality in most mussel
species (Ellis 1936). The abrasive action of sediment on mussel shells has been shown to cause erosion of
the outer shell, which allows acids to reach and corrode underlying layers (Harman 1974).
Sewage treatment effluent has been documented to significantly affect the diversity and abundance of
mussel fauna (Goudreau et al. 1988). Goudreau et al. (1988) found that recovery of mussel populations
might not occur for up to 2 river miles (3.22 kilometers) below points of chlorinated sewage effluent.
Most water bodies where Appalachian elktoe still exist have relatively few point source discharges within
the watershed and are rated as having "good" to "excellent" water quality (USFWS 1996).
Introductions of exotic species, such as the Asian clam (Corbicula fluminea) and zebra mussel (Dreissena
polymorpha), also pose significant threats to native freshwater mussels. The Asian clam is now
established in most of the major river systems in the United States (Fuller and Powell 1973). At the time
the Appalachian elktoe was listed, the Asian clam was not known from the stretch of the Little Tennessee
River that it occupies; however, it has been observed in the Little Tennessee River in recent years and, as
mentioned earlier, may be a contributing factor to the decline of that population. Concern has been raised
over competitive interactions for space, food, and oxygen between this species and native mussels,
12

possibly at the juvenile stages (Neves and Widlak 1987). When the Appalachian elktoe was listed, it was
speculated that, due to its restricted distribution, it "may not be able to withstand vigorous competition"
(USFWS 1996).
The exotic Japanese knotweed (Fallopia japonica) may also threaten populations of Appalachian elktoe.
This riparian plant is an invasive species within the known range of Appalachian elktoe and can
reproduce from seed or long, stout rhizomes. It can tolerate a variety of conditions, such as full shade,
high temperatures, high salinity, and drought. It can be spread by wind, water, and soil movement to an
area where it quickly forms dense thickets that exclude native vegetation and greatly alter the natural
ecosystem. This species has become established in riparian habitats throughout western NC. The species
has a very shallow root system; because of this shallow root system and its preclusion of other vegetation,
areas where this species has been established may be susceptible to erosion during flood events.
4. Environmental Baseline in the Action Area
In accordance with 50 CFR 402.02, the environmental baseline "refers to the condition of the listed
species or its designated critical habitat in the action area, without the consequences to the listed
species or designated critical habitat caused by the proposed action. The environmental baseline
includes the past and present impacts of all Federal, State, or private actions and other human
activities in the action area, the anticipated impacts of all proposed Federal projects in the action
area that have already undergone formal or early section 7 consultation, and the impact of State or
private actions which are contemporaneous with the consultation in process. The consequences to
listed species or designated critical habitat from ongoing agency activities or existing agency
facilities that are not within the agency's discretion to modify are part of the environmental
baseline."
4.1 Appalachian Elktoe in the Action Area
The proposed action area occurs within a reach of the FBR which is occupied by a population of
Appalachian elktoe that exists in low abundance. Prior to 2017, Element Occurrence Number (EO No.)
21150 of this species within the FBR was considered historic (first observed in 1840). In 2017,
occurrences of this animal were found in the FBR which expanded the previously known range of this
species by approximately 32 river miles (EO No. 69). Mussel surveys in 2019 detected Appalachian
elktoe in low abundance near the Bent Creek confluence with the FBR upstream of the CBPS action area.
Suitable habitat for this animal occurs within the proposed action area located within the FBR. The
Applicant and Service staff conducted mussel surveys of the action area on September 22, 2022. Survey
efforts evaluated reaches of the FBR extending approximately 400 meters downstream and 100 meters
upstream from each of the two proposed crossings areas (i.e. North and South River Crossings). Six
surveyors conducted visual surveys using mask and snorkel and weight belts (22 person -hours). Water
clarity was high and flow conditions were close to median levels according to U.S. Geological Survey
gage # 03451500. No Appalachian elktoe were detected and a single live animal representing the
introduced mussel species eastern elliptio (Elliptio complanata) was found.
Even under ideal survey conditions, detectability of Appalachian elktoe using visual and tactile survey
methods is low, due to the animal's burrowing habit, camouflage in substrates, and inherently low
abundance. We assume that this animal occurs in low abundances within the portion of the action area
which overlaps the FBR based on the survey information provided by the Applicant, known occurrences
in the project vicinity, low detection probability, and availability of suitable habitats within this reach of
the FBR.
13

5. Effects of the Action
In accordance with 50 CFR 402.02, the definition of "effects of the action" is "all consequences to listed
species or critical habitat that are caused by the proposed action, including the consequences of other
activities that are caused by the proposed action. A consequence is caused by the proposed action if it
would not occur but for the proposed action and it is reasonably certain to occur. Effects of the action
may occur later in time and may include consequences occurring outside the immediate area involved in
the action." This section analyzes the effects or consequences of the action on the Appalachian elktoe.
The effects of the action are added to the environmental baseline and, after taking into consideration the
status of the species, serve as the basis for the determination in this Opinion (50 CFR 402.14(g)(4)).
The CBPS project is expected to affect Appalachian elktoe during construction and after construction is
complete. Potential stressors and beneficial effects mediated by the proposed action are summarized
below:
5.1 Stressor —Direct Impacts
Construction activities within the FBR, especially those requiring the use of heavy machinery associated
with the pipeline crossings and bank stabilization, may directly impact (kill, crush, injure, bury, excavate,
dewater, strand aground, etc.) any undetected mussels occurring within the action area. Given the
apparently low abundance of Appalachian elktoe in this reach of the FBR, and the USACE's commitment
to conduct mussel surveys before and during construction (see Section 2.3 of this Opinion) the potential
for such direct impacts is unlikely but not completely discountable. Direct impacts would be restricted to
approximately 2.6 acres of aquatic habitat within the FBR for all stages of both crossing areas (1.1 acres
for each crossing) and all proposed bank stabilization (0.4 acre).
5.2 Stressor — Pipeline Crossings and Cofferdams
Pipeline crossings would be accomplished by open -cut dry -ditch (trenching methods) which entail the
construction of temporary cofferdams, dewatering within cofferdams, substrate excavation, temporary
storage of excavated substrates in upland areas, and replacement of riverbed substrates to pre-existing
riverbed elevations (see Section 2.2 of this Opinion). These activities may affect physical habitats and
water quality conditions that support Appalachian elktoe. The installation and removal of cofferdams is
expected to temporarily suspend fine substrates and increase sedimentation into downstream aquatic
habitats. Cofferdam installation/removal would be accomplished in less than two days for each stage at
both crossings. The USACE's BA (Section 6.4.8) indicates that impacts to instream habitats associated
with the installation and removal of all cofferdams would not exceed eight days total for both stream
crossings.
Cofferdam construction and maintenance would also reduce the amount of available suitable habitat for
Appalachian elktoe within the FBR by temporarily dewatering portions of the river and constricting river
flow into a confined area. Temporary placement of cofferdams would increase surrounding flow
velocities in streambed and streambank habitats, which may disturb host fish behavior and the feeding
and reproduction behaviors of any undetected mussels. Cofferdams would also increase adjacent shearing
forces which increase erosion, sedimentation, and temporarily degrade suitable habitat conditions for
mussels. The duration of these stressors would coincide with construction duration of each crossing.
Section 2.2.8 of the USACE's BA indicates that the North and South River Crossings would each be
completed in six months.
According to the USACE's BA, cofferdams would be dewatered (via screened intake), filtered, and
discharged into the FBR. Cofferdam dewatering may entrain, impinge, injure, or kill, undetected mussels
or host fish which are smaller than the screened intake. Cofferdam dewatering may also mobilize, entrain,
and/or transport fine sediments and any water contaminations into downstream habitats. Stressors to
14

Appalachian elktoe associated with cofferdam dewatering are minimized by several proposed
conservation measures summarized in Section 2.3 of this Opinion.
Section 2.2.4.1 of the USACE's BA indicates that cofferdams will be designed to withstand at least a 2-
year storm event. Given the proposed six-month duration of cofferdam placement for each of the two
FBR crossings and uncertainty of weather events, it is possible that instream construction sites coincide
with one or more flow events that result in cofferdam failure. Cofferdam failure would likely expand the
action area, require additional instream work to recover equipment, and extend construction/impact
durations. Stressors to Appalachian elktoe resulting from cofferdam failure would depend on specifics of
the event and are beyond the scope of analysis in this consultation (see Reinitiation Notice in Section 9 of
this Opinion).
5.3 Stressor — Temporary and Permanent Streambank Stabilization
Riparian areas adjacent to the North and South Crossings would require the temporary placement of lithic
materials to minimize bank scour and mass wasting associated with river flow constriction from
cofferdam placements (see Section 2.2.4 of this Opinion). Temporary bank stabilization would likely
entail placement of materials in some areas that contain suitable aquatic habitats for Appalachian elktoe.
Any undetected Appalachian elktoe occurring in these areas may be crushed, injured, or disturbed during
material placement and removal. This activity may mobilize sediments resulting in localized and
temporary erosion and sedimentation which could reduce fitness of any Appalachian elktoe present or
degrade their habitats. This Stressor would be approximately 2.3 acres in extent (primarily in riparian, not
aquatic habitats) and its duration would coincide with construction activities associated with the North
and South River Crossings (Table 2).
Temporary bank stabilization measures would be removed after pipe installation is complete and replaced
with permanent natural stabilization using bioengineering techniques and native vegetation. Permanent
bank stabilization would likely entail placement of materials in some areas that may contain suitable
aquatic habitats for Appalachian elktoe. Any undetected Appalachian elktoe occurring in these areas may
be crushed, injured, or disturbed during material placement. The installation of permanent bank
stabilization may also mobilize sediments resulting in localized and temporary erosion and sedimentation
which could reduce fitness of any Appalachian elktoe present or degrade their habitats. This stressor
would be approximately 2.3 acres in extent (primarily in riparian, not aquatic habitats) and its duration
would be less than 46 days for the North Crossing and less than 45 days for the South Crossing (Table 2).
In the long-term, permanent streambank stabilization could improve baseline habitat conditions for
Appalachian elktoe within the small, localized areas in FBR where this work would occur. A
bioengineered, natural channel bank stabilization design may improve pre-existing levels of bank
stabilization and reduce potential for erosion and sedimentation of downstream habitats. An appropriate
permanent bank stabilization design may also improve the near bank substrates and flow conditions that
support freshwater mussels and their fish symbionts.
5.4 Stressor — Light, Noise, and Vibration
Freshwater mussels can detect and respond to changes in light. Studies suggest that mussels may react
more to rapid changes in ambient light levels (e.g. passing shadows from adjacent activity) than to
gradual changes in light levels (Braun and Faust 1954, Imlay 1968). Some mussels may release glochidia
(possibly prematurely) in response to changes in ambient light, noise, and/or vibration.
Lighting, noise, and vibration disturbances may cause mussels to retract siphons and close valves which
could disrupt feeding, respiration, and reproductive behaviors, (including those associated with their fish
symbionts), and could reduce fitness of individuals. Prolonged exposure to these disturbances exceeding
15

baseline conditions may influence animals to expend additional resources to relocate or prematurely abort
glochidia which could reduce reproductive success and increase susceptibility to predation or otherwise
reduce fitness.
The USACE indicates that nighttime work requiring artificial lighting is not anticipated for the CBPS
project but that on occasion, work may extend up to four hours beyond daylight hours. Any artificial
lighting used for nightwork within or near the FBR would not exceed 14 consecutive days per 12-month
period. Project -mediated construction lighting impacts to Appalachian elktoe is unlikely to significantly
exceed existing artificial light sources from adjacent roadways, parks, residences, and commercial
developments.
Project -mediated vibration stressors to Appalachian elktoe are difficult to quantify but are likely to result
from various proposed construction activities within and adjacent to the FBR. The extent of those
stressors would depend on the magnitude of impact/vibration source, duration of source, and dissipation
rates through water and various substrates. Vibration impacts are expected to occur outside the immediate
project footprint and possibly outside of the mussel survey area described in the USACE's BA. Vibration
from cofferdam installation and removal, substrate excavation, substrate replacement, streambank
stabilization, and various other construction activities is anticipated to coincide with the duration of
instream and riparian activities associated with the North and South River Crossings (Table 2).
5.5 Stressor — Inadvertent Spills
Inadvertent spills or discharges of toxic pollutants, such as diesel fuel, lubricants, and hydraulic fluid into
the FBR could result in mortality of Appalachian elktoe. Spills of construction fluids are not uncommon,
and the duration of heavy equipment use adjacent to waterways increases the possibility that a spill or
discharge could occur. However, the Applicant has committed to conservation measures that reduce the
likelihood of a spill or discharge reaching the river (see Section 2.3 of this Opinion). Spills could also
take place near any other waterway within the action area and subsequently have an effect further
downstream.
The type, timing, amount, and proximity to a water source of any accidental spills would determine the
magnitude of effect to Appalachian elktoe, but may result in death, disrupt feeding or reproductive
behaviors, influence animals to expend energy to relocate to more favorable habitats, or otherwise reduce
fitness. Significant spills resulting from negligent operation are possible, but unlikely to occur.
5.2 Cumulative Effects
Cumulative effects include the "effects of future State or private activities, not involving Federal
activities, that are reasonably certain to occur within the action area of the Federal action subject to
consultation" (50 CFR 402.02). Future federal actions that are unrelated to the proposed action are not
considered in this section because they require separate consultation pursuant to section 7 of the Act.
Federal projects such as the I-26 Connector (I-2513, Service Log# 02-252), I-26 Widening (I-4400/4700,
Service Log #01-206), Project Ranger (Service Log #19-328), and I-26 Proposed Exit 35 (HE-0001,
Service Log #21-330) are included in the environmental baseline as section 7 consultation is already
completed for these actions.
While the project area continues to maintain positive growth and a growing population, we are unaware
of any specific future State or private actions that are reasonably certain to occur within the action area.

6. Conclusion
After reviewing the present status of the Appalachian elktoe, the environmental baseline for the action
area, the effects of the proposed CBPS project and the cumulative effects, it is the Service's biological
opinion that the project as proposed, is not likely to jeopardize the continued existence of the Appalachian
elktoe.
Low abundances of Appalachian elktoe are assumed to be present within the action area which contains
suitable habitat in the FBR. The Service anticipates that incidental take of the Appalachian elktoe is likely
to occur due to project -mediated activities within the FBR. During construction, individual mussels may
be crushed, harmed by siltation or other water quality degradation, or relocated due to physical changes in
their habitat.
The survey data is not sufficient to populate a robust population model, but according to recent nearby
surveys in the FBR that detected Appalachian elktoe, the Service estimates a species density of 0.0005
mussels per square meter in the CBPS action area that contains suitable habitat. The CBPS project
proposes to directly affect up to 2.6 acres (10,522 square meters) of suitable aquatic habitat associated
with the installation of the North and South River Crossings and all bank stabilization. Based on
estimated mussel density, approximately six animals could be crushed, excavated, stranded aground, or
buried in association with proposed pipeline crossings and bank stabilization work (if undetected during
preconstruction and dewatering surveys).
Due to the extent and duration of this project, it is possible Appalachian elktoe in the action area will be
affected by habitat degradation from sediment eroded or mobilized by construction activities. The reach
of the FBR within the proposed action area is approximately 3,500 meters long and has an average river
width of 80 meters (i.e. 280,000 square meters or 69.2 acres). Riparian and instream development
activities in this reach of the FBR (including sand and gravel mining, residential, commercial, industrial,
and recreational activities) significantly reduce streambank and streambed stability, riparian buffers,
natural stormwater controls, and ultimately reduce available habitats which support Appalachian elktoe.
We estimate that approximately 50-75% of available aquatic habitats in this reach of the FBR are suitable
for Appalachian elktoe. According to our model density and estimated proportion of suitable habitat,
approximately 70-105 Appalachian elktoe occur within the proposed action area.
Due to the extent and duration of this project, it is possible Appalachian elktoe in the action area will be
affected by habitat degradation from sediment eroded or mobilized by the project. Conservation measures
outlined in the USACE's BA are intended to minimize adverse effects from sedimentation. However,
even under standard construction conditions, we expect that up to 105 Appalachian elktoe within the
action area may be harmed by the presence of turbidity or settling of sediment in depositional portions of
its habitat. We expect this effect to be non -lethal harm that could temporarily reduce fitness and
reproductive success throughout the duration of the project. We do not anticipate that the effects of
sediment pollution within the action area will reach a level that prevents recolonization after construction.
Therefore, in this Opinion, the Service has determined that this level of take is not likely to result in
jeopardy to the Appalachian elktoe. In addition to the measures listed in the Reasonable and Prudent
Measures and Terms and Conditions sections of this Opinion, the measures listed in the Conservation
Measures section of this opinion must be implemented for this determination to remain valid.
The proposed action area does not contain designated critical habitat for Appalachian elktoe or any other
federally listed species; therefore, none would be affected.
17

7. Incidental Take Statement
Section 9 of the Act and Federal regulations pursuant to section 4(d) of the Act prohibit the take of
endangered and threatened species, respectively, without special exemption. Take "means to harass,
harm, pursue, hunt, shoot, wound, kill, trap, capture, or collect, or to attempt to engage in any such
conduct" (16 U.S.0 §1532). Harm is further defined by the Service as "an act which actually kills or
injures wildlife. Such act may include significant habitat modification or degradation where it actually
kills or injures wildlife by significantly impairing essential behavioral patterns, including breeding,
feeding or sheltering" (50 CFR 17.3). Incidental taking "means any taking otherwise prohibited, if such
taking is incidental to, and not the purpose of, the carrying out of an otherwise lawful activity" (50 CFR
17.3). Harass is defined by the Service as "an intentional or negligent act or omission which creates the
likelihood of injury to wildlife by annoying it to such an extent as to significantly disrupt normal behavior
patterns which include, but are not limited to, breeding, feeding or sheltering" (50 CFR 17.3). Incidental
take is defined as take that is incidental to, and not the purpose of, the carrying out of an otherwise lawful
activity. Under the terms of section 7(b)(4) and section 7(o)(2), taking that is incidental to, and not
intended as part of, the agency action is not considered to be prohibited under the Act, provided that such
taking is in compliance with the terms and conditions of this incidental take statement.
The measures described below are non -discretionary and must be undertaken by the USACE so that they
become binding conditions of any grant or permit issued to the construction contractor, as appropriate, for
the exemption in section 7(o)(2) to apply. The USACE has a continuing duty to regulate the activity
covered by this incidental take statement. If the USACE (1) fails to assume and implement the terms and
conditions or (2) fails to require the construction contractor to adhere to the terms and conditions of the
incidental take statement through enforceable terms that are added to the permit or grant document, the
protective coverage of section 7(o)(2) may lapse. To monitor the impact of incidental take, the USACE
must report the progress of the action and its impact on the species to the Service as specified in the
incidental take statement [50 CFR §402.14(i)(3)].
7.1 Amount or Extent of Take
The Service anticipates that up to 106 Appalachian elktoe could be taken (killed, wounded, harmed or
harassed) as a result of the proposed action, with most take occuring in the form of non -lethal harassment
or harm via habitat alteration to approximately 64-99 Appalachian elktoe. In this Opinion, the Service
determines that this level of anticipated take is not likely to result in jeopardy to Appalachian elktoe.
7.2 Reasonable and Prudent Measures
The Service believes the following reasonable and prudent measure(s) are necessary and appropriate to
minimize take of Appalachian elktoe. These non -discretionary measures reduce the level of take
associated with project activities, include only actions that occur within the action area, and involve only
minor changes to the project.
1. Ensure that project proponents and contractors understand and follow the measures listed in the
"Conservation Measures," "Reasonable and Prudent Measures," and "Terms and Conditions"
sections of this Opinion.
2. Reduce take, mortality, and injury of Appalachian elktoe to the maximum extent practicable.
3. Monitor and document instances of observed take and report it to the Service.
7.3 Terms and Conditions
To be exempt from the prohibitions of section 9 of the Act for Appalachian elktoe, the USACE must
comply with the following terms and conditions, which implement the reasonable and prudent measures
described above and outline required reporting and monitoring requirements. When incidental take is
IV.

anticipated, the terms and conditions must include provisions for monitoring project activities to
determine the actual project effects on listed fish or wildlife species (50 CFR §402.14(i)(3)). These terms
and conditions are nondiscretionary.
1. Ensure that the procedures listed in the "Conservation Measures," "Reasonable and Prudent
Measures", and "Terms and Conditions" sections of this Opinion are being implemented.
2. Construction Progressporting. Provide brief email notifications to this office when project
construction begins and is completed, and when construction phases within the FBR begin and
are completed. Specifically, notify this office when:
a. project construction begins.
b. cofferdam installation begins and when cofferdam relocation/removal is complete for
each of the four cofferdam stages.
c. pipeline installation begins and is completed for the North and South River Crossings.
d. temporary bank stabilization is installed and removed.
e. permanent bank stabilization begins and is complete.
f. project construction is complete and operational.
3. Construction Changes or Delay. Notify this office as soon as deviations to the proposed project
description or construction timeline described in the BA are anticipated or occur.
4. Listed Species Encounters. Notify this office as soon as possible and within 24 hours upon
detecting live, dead (including shell material), injured, or sick federally endangered or threatened
species.
The reasonable and prudent measures, with their implementing terms and conditions, are designed to
minimize the impact of incidental take that might otherwise result from the proposed action. If, during the
course of the action, this level of incidental take is exceeded, such incidental take represents new
information requiring reinitiation of consultation and review of the reasonable and prudent measures
provided. The USACE must immediately provide an explanation of the causes of the taking and review
with the Service the need for possible modification of the reasonable and prudent measures.
8. Conservation Recommendations
Section 7(a)(1) of the Act directs Federal agencies to use their authorities to further the purposes of the
Act by carrying out conservation programs for the benefit of endangered and threatened species.
Conservation recommendations are discretionary agency activities to minimize or avoid adverse effects of
a proposed action on listed species or critical habitat, to help implement recovery plans, or to develop
information.
1. Consider permanent bank stabilization design and methods which improve habitat conditions for
Appalachian elktoe, its fish symbionts, and other aquatic natural resources. The Service
appreciates the opportunity to review the proposed permanent bank stabilization design when it
becomes available.
2. Consider the use of native flowering plant species for landscaped areas and utility rights -of -way
which may reduce maintenance costs and provide habitat for listed or candidate pollinator
species.
3. Consider a bat -friendly lighting design plan for all outdoor permanent lighting fixtures associated
with the pump station (see separate informal consultation associated with this project for listed
bat species).
19

For the Service to be kept informed of actions minimizing or avoiding adverse effects or benefitting listed
species or their habitats, the Service requests notification of the implementation of any conservation
recommendations.
9. Reinitiation Notice
This concludes formal consultation for the CBPS project. As provided in 50 CFR §402.16, reinitiation of
formal consultation is required where discretionary Federal agency involvement or control over the action
has been retained (or is authorized by law) and if: (1) the amount or extent of incidental take is exceeded;
(2) new information reveals effects of the agency action that may affect listed species or critical habitat in
a manner or to an extent not considered in this opinion; (3) the agency action is subsequently modified in
a manner that causes an effect to the listed species or critical habitat not considered in this opinion; or (4)
a new species is listed or critical habitat designated that may be affected by the action. In instances where
the amount or extent of incidental take is exceeded, any operations causing such take must cease pending
reinitiation.
10. Literature Cited
Braun, R. and Faust, I., 1954. Further studies on the light sense of eyeless mussels; studies on Anodonta
cygnea and Pseudanodonta complanata. Experientia, 10(12), pp. 504-505. Clarke, A. H. 1981. The tribe
Alasmidontini (Unionidae: Anodontinae), Part I: Pegias, Alasmidonta, and Arcidens. Smithsonian
Contributions to Zoology. 326:101
Ellis, M. M. 1936. Erosion silt as a factor in aquatic environments. Ecology. 17:29-42.
Fuller, S. L. H. and C. E. Powell. 1973. Range extensions of Corbicula manilensis (Philippi) in the
Atlantic drainage of the United States. Natilus. 87(2):59.
Goudreau, S. E., R. J. Neves, and R. J. Sheehan. 1988. Effects of sewage treatment effluents on
mollusks and fish of the Clinch River in Tazewell County, Virginia. Final Rep., U.S. Fish and Wildl.
Serv. 128 pp.
Harman, W. N. 1974. The effects of reservoir construction and channelization on the mollusks of the
upper Delaware watershed. American Malacological Union. 1973:12-14.
Imlay, M.J., 1968. Environmental factors in activity rhythms of the freshwater clam Elliptio complanatus
catawbensis (Lea). American Midland Naturalist, pp.508-528.
Lea, I. 1834. Observations on the naiads and descriptions of new species of that and other families.
Transactions of the American Philosophical Society. 5: 23-119, plates 1-19.
Parmalee, P. W. and A. E. Bogan. 1998. Freshwater Mussels of Tennessee. University of Tennessee
Press, Knoxville.
Marking, L. L., and T. D. Bills. 1979. Acute effects of silt and sand sedimentation on freshwater
mussels. Pp. 204-211 in J.L. Rasmussen, ed. Proc. of the UMRCC symposium on the Upper Mississippi
River bivalve mollusks. UMRCC. Rock Island IL. 270 pp.
Neves, R. J. and J. C. Widlak. 1987. Habitat ecology of juvenile freshwater mussels (Bivalvia:
Unionidae) in a headwater stream in Virginia. American Malacological Bulletin. 1(5):1-7.
OR

Ortmann, A. E. 1921. The anatomy of certain mussels from the Upper Tennessee. The Nautilus.
34(3):81-91.
United States Fish and Wildlife Service (USFWS). 1996. Appalachian Elktoe (Alasmidonta raveneliana)
Recovery Plan. Atlanta, Georgia, 30 pp.
United States Fish and Wildlife Service (USFWS). 2002. Endangered and Threatened Wildlife and
Plants: Designation of Critical Habitat for the Appalachian Elktoe. CFR, Vol. 67, No. 188.
United States Fish and Wildlife Service (USFWS). 2009. Appalachian Elktoe (Alasmidonta raveneliana)
5-Year Review. Asheville, North Carolina, 22 pp
21

1. Figures and Tables
Juno
LEGEND 'Elk Mountain
= Action Area
DkTA 90URCE: E2R1Abed bpoUmpNE
E-p
N
Courtly
DU C ub Df
A=111a
n
0 1 I kl(m - I MW Buie Caurdy, NC
Montford Hills
Crowne Plaza
Ten N 5 & Gd,
Resort
-63
Deaver View Eus'jng ,:artier Bridge
lump -,L-Aon
West Asheville
KcniW)rth
Sulphur
Springs
West Asheville
Malvern Hills
Carrie
C
�oj ZY T
Shiloh
Ige
D:A:1
Biltmore
sc,rr s rradfey ailtmore Fom.Forest
fovi �97 4 Venable . Co Ye CourvtryClub
247 ?ft
Valley Springs
Bent Creek
VISID1 CARRIER BRIDGE PUMP STATION REPLACEMENT PROJECT
N
PROJECT LOCATION MAP
O
Figure -1
MLGOICAL A42EZIMENT
Figure 1. Proposed action area within the greater West Asheville area.

o vnm'cr_�o� r��a�aiow��,rrm� Iwo' �ro�_o�mus� at imva MLOGIOAL AOSE"MENT
Figure 2. North and South River Crossing areas.
041

Figure 3. Proposed site access route.
ME
SIOLO@ICAL ASM ESMENT

41CLTSMtSP40S ➢ATAWASVIZ'a)BnT3-4 71 M30 BLNOOMS ID1913ED CARMERBRIDC+JPS UPDA7Eu72 M t W DOCSM96 CPRRIE MD(§E RDUND2AIPRX DATE: 346i2[143 DOLWICAILASSESSMEW
Figure 4. North River Crossing detail.

1YCLTSM+SB4iGS adTAiC�=A671 *S BC.NODM3L-lfl1943Bq G4RF71ERBRID3i DPt)A7EG.72 4NPMAF DOCSMSD G4RRIERBRJDGE ROl)ND2.APRX DATE: 2i1=3 BIOLOGICAL ASSESSMENT
Figure 5. South River Crossing detail.
26

Table 1. Proposed tree clearing/trimming limits.
Constriction Area
Tree Clearing
or Trimming
S(ltit7re 1)r
Lii7�: �7r Feet
Acr-c'-
New Lanier Bridge Pump Station
Clearing
t
0.21
New 36-inch Force Main Pipeline
C lea ri n
826 LF
0.98
New 60`inch Gravity Sewer Interceptor Fi eiinc
Clearin q
700 LF
0.86
48- inchJ54- i n ch Gravity Sewer Rehabilitation
Cl-earing
300 LF
0.10
North River Crossing 36-inch torte mains
C lea ri nq
100 LF
0.45
South River Cross -In (60-inch gravity sewer li nel
cl-earing
100 LF
0.50
B i ltniore Estate Access Route (passing lane, turn
radius
C lea ring
8.000 LF
2.60 `
Sta in and La down Areas
Clearing
r►fa
0
Total Tree Clearing Area
5.70
48-inch}54-inch Gravity Sewer Rehabilitation
Trimrnipq
860 L=
0.88
South River Crossing (60-inch gravity sewer line)
Trimmin
3.1-' ! F
0.08
Riltmore Estate Access Route
Trimr-lingrh
&
Staqinq and La down Areas
Trinirning
n1a
0
Total Tree Trimming Area
0.96
'This provides a worst -case scenario for potential tree clew ring along th a Bi Itmore E state Access Road
west of the French Broad River assuming a 1 5-ft wide clearing for the entire length to allow passing
vehicles and increases to existing turning radius at three Incations along the route to facilitate burns for
larger supply trucks1construction equipment. Where feasible clearing will be li mi-ted to just tree trimming
and will be determined at a k-ger date.
27

MSa Carrier Bridge Pump Station Project
Construction Schedule
ID
Task
Mode
Task NamE
Duration
Start
Finish
yaH 2O2� Hafi1 3725 HaIF 2025 HaH12026 Half 2{F26 HaR12027 Half 2027 HaN1 21328 HaIF22U2S Fla
l A 5❑ N❑ 1 F M A M J 1 A 5❑ N❑ 1 F M A M J 1 0. 5❑ N D J F M 0. M J 1 A 5❑ N D 1 F M A M 1 J A 5❑ N D J
1
?
Construction Contract Notice of Award Thu 8/1/24
Notice to Proceed with Construction Tue 10/1124
I Pump Station Construction 1021 days Fri 11/L5J 24 Thu 10/12/28
Clearing, Erosion Control, Rough Grading 98 days Fri 11J15/24 Tue 4/1J25
I Install Dewatering System 66 days Wed 4J2J25 Wed 7/2/25
I Pump Station ExEavatlDn 110 days Thu 7J3J25 Tue 12/2/25
Concrete Substructure 262 days Wed 12/3/25 Thu 12J3J26
I Pump Station Building 131 days Fri 12J4J26 Fri 6/4/27
I Piping, Electrical, Mechanical, Plumbing 110 days Mon 6J7/27 Fri 11/5/27
Final Site Work and Restoration 89 days Mon 11/6/27 Thu 3/9J28
Testing and Start Up 66 days Fri 3/10/29 Fri 5/9/28
I Decommission Existing Pump Station and Piping 89 days Mon 6/12/22 Thu 10112/22
643-lnch Influent Gravity Sewer 520 days Fri 11/15/24 Wed 11/11/26
AMBOY ROADCROSSING 269 days Fri 11/15/24 Tue 11/25/25
l Clearing, Erosion Control, Rough Grading 98 days Fri 11115/24 Tue 4/1125
Trenchless Crossing 89 days Wed4J2/25 Mon 8/4J25
l60-inch Pipeline Installation 87 days TueS/5/25 Tue 12/2/25
RIVER CROSSING 169 days Sat 11/15/25 Wed 7/8/26
I Clearing Erosion Control, Rough Grading 35 days Sat 11/Thu 111126
I Cofferdam and Pipeline Installation (North Side) 65 days Fri 1/2/262fi lieu 4J2J26
Cofferdam and Pipeline Installation (South Side) fig days Fri 4/3/26 Wed 7/8/26
1 Testing 44 days Thu 7J9J26 Tue 9/8126
I Final Site Work and Restoration 46 days Wed 9J9/26 Wed 11J11J26
3&lnch Effluent Force Main Sewers 316 days Sat 11/15/25 Fri i/29/Z7
Clearing and Erosion ContrDl 99 days Sat 11/15/25 Wed 4/1/26
1 RIVER CROSSING 230 days Sat 11/15/25 Thu 10/1J26
Cofferdam and Pipeline Installation {West Sidej 66 days Wed 4J1/26 Wed 7/1/26
I Cofferdam and Pipeline Installation (East Side) 67 days Wed 7J1/26 Thu 10/1J26
ITesting 44 days Thu 10/1/21S Tue 12/1/26
Final Site Work and Restoration 44 days Tue 12/1/26 Fri 1/29/27
Existing 54-Inch Gravity Sewer Rehabilitation 255 days Sat 11/15/25 Thu 1115126
I Clearing and Erosion Control 77 days Sat 11/15/25 Sun 3/1/26
154-Inch Pipe Rehabilitation 89 days Mon 3J2/26 Thu 712126
l Testing 45 days Fri 7/3/26 Thu 9J3126
l Final Site Work and Restoration 45 days Fri 9/4/26 Thu 11/SJ26
Exl5[ing48-Inch Gravity Sewer Replacement 121 days Mon 11115/27 Mon 5/1J2$
l Clearing and Erosion Control 36 days Mon 11/15/27 Sat 1/1/28
148-Inch Pipe Replacement 45 days Sun 1/2/28 Thu 3J2J28
Testing 22 days Fri 1/3/28 Mon 4/3J28
Final Site Workand Restoration 46days MonVIY28 Mon6/5J28
-k
2
3
I;0'
4
��
5
6
7
8
9
10
11
12
13
14
7f
15
16
17
18
19
20
;1�
�[
;0'
21
22
23
24
25
26
27
28
29
30
�j�
31
32
33
1;0'
34
35
36
37
38
39
40
Table 2. Gantt chart description of construction timeline.

Biological Assessment
Carrier Bridge Pump Station Replacement Project
Appendix F
River Safety Plan
March 28, 2023

RIVER SAFETY PLAN
for the
CONSTRUCTION OF THE 36-INCH FORCE MAIN PIPELINE CROSSING (NORTH)
AND THE 60-INCH GRAVITY SEWER PIPELINE CROSSING (SOUTH)
OF THE FRENCH BROAD RIVER
Proposed for the
Metropolitan Sewerage District of Buncombe County
Carrier Bridge Pump Station Project
To facilitate and assure safe passage of river users during the construction of the Carrier Bridge Pump
Station Project proposed pipeline north and south crossings of the French Broad River, the Metropolitan
Sewerage District of Buncombe County has developed this River Safety Plan (RSP) for implementation
during project construction. The following measures are to be conducted and implemented prior to
initiating construction activities along or across the French Broad River:
■ Initial coordination efforts:
o Coordinate with the North Carolina Department of Transportation (NCDOT):
■ Identify river safety measures implemented by NCDOT for the 1-26 bridge
demolition and construction project.
■ Identify any lessons learned or issues that occurred to consider further as part of
this River Safety Plan.
■ Revise and/or add measures to this River Safety Plan based on information
learned from NCDOT.
o Coordinate with the Biltmore Farms, LLC:
■ Identify river safety measures implemented for their Ranger Bridge construction
project.
■ Identify any lessons learned or issues that occurred to consider further as part of
this River Safety Plan.
■ Revise and/or add measures to this River Safety Plan based on information
learned from Biltmore Farms, LLC.
o Coordinate with the local recreational boating outfitters in the area:
■ Ensure project signage and river safety measures outlined in this plan are
adequate for recreational users.
■ Identify suitable locations for posting signage along the river visible for
recreational users.
■ Request permission to post a project/construction announcement alerting
recreational users of appropriate river safety during construction activities and
recommended put in/pull out locations.
o Verify privately owned launches are open for access use; update coordination and sign
posting lists accordingly.
Page 1 of 4

River Safety Plan
Carrier Bridge Pump Station — North and South River Crossings
o Coordinate with public and privately owned launches for permission of sign posting:
■ Public agencies/department — Transylvania County Parks and Recreation
Department, Brevard Parks and Recreation Department, North Carolina Wildlife
Resources Commission, Henderson County Parks and Recreation Department,
Town of Mills River, Buncombe County Parks and Recreation Department, and
Woodfin Parks and Recreation Department.
■ Private entities — Headwaters Outfitters, Headwaters Outfitters Campground,
Beer City Tubing, Zen Tubing, Asheville Adventure Company, and French Broad
Outfitters.
■ Develop appropriate project/construction announcement and signage for alerting recreational
users of river safety during construction and recommended put in/pull out areas.
■ Identify appropriate locations for posting construction notification and river safety signage along
the river and at river entry points (see proposed upstream and downstream locations shown on
the attached Figures 1A and 113, and outlined under the following bullet).
■ Posting of construction notification and river safety signage:
o Provide signage upstream and downstream of the pipeline crossing locations (north and
south) to alert recreational users of construction activities in the area. Signs shall be
posted in a publicly viewable location near river access parking areas and at the top slope
of river launch ramps.
o Signs posted upstream of the project construction areas will note that the last public pull
out is at Hominy Creek River Park, approximately 1-mile upstream of the project south
crossing construction area. Last emergency pull out on private property is at the Asheville
Adventure Company access ramp located approximate 900 feet upstream of the project
south crossing construction area.
o Signage shall be posted along the river edge or at a suitable upstream bridge crossing
alerting in -water users of the upcoming public pull out and emergency pull out locations
and shall be placed no less than 1,000 feet from the exit point. Additionally, this signage
should indicate which side of the bank (left or right) the exit point is on.
o Notification signage will be placed at the following upstream locations (listed starting
with the furthest upstream location and moving in order downstream to the project site);
all are public with the exception of the privately owned launches marked with an asterisk
N:
■ Headwaters Outfitters* — 25 Parkway Road, Rosman
■ Champion Park River Access (Transylvania County Parks and Recreation
Department) — Old Turnpike Road, Rosman (1st public access from the
headwaters)
■ Headwaters Outfitters Campground * - Green Road (SR 1127), Rosman
■ Island Ford River Access (Transylvania County Parks and Recreation Department)
— Island Ford Road, Brevard
■ Hap Simpson Park (Brevard Parks and Recreation Department) — 968 Greenville
Hwy, Brevard
■ Wilson Road River Access (Transylvania County Parks and Recreation
Department) —Wilson Road, Pisgah Forest
Page 2 of 4

River Safety Plan
Carrier Bridge Pump Station — North and South River Crossings
■ Penrose Boat Ramp (North Carolina Wildlife Resources Commission) — 170 Apac
Drive, Penrose
■ Blantyre Park (Henderson County Parks and Recreation Department) — Grove
Bridge, Etowah
■ Horse Shoe River Bend Access (Henderson County Parks and Recreation
Department) — 5437 Brevard, Horse Shoe
■ Mills River Park (Town of Mills River) — 124 Town Center Drive, Mills River (This
access point is located along Mills River approximately 0.9 river miles upstream
of the confluence of Mills River and French Broad River and is a common starting
point for paddlers along the French Broad River).
■ Westfeldt Park (Henderson County Parks and Recreation Department) — 83 Old
Fanning Bridge Road, Fletcher
■ Glen Bridge River Park (Buncombe County Parks and Recreation) — 77 Pinners
Road, Arden
■ Beer City Tubing* - Geen Bridge Road, Arden
■ Corcoran Paige River Park (Buncombe County Parks and Recreation Department)
— 9 Pinners Road, Arden
■ Bent Creek River Park (Buncombe County Parks and Recreation Department) —
1592 Brevard Road, Asheville
■ Zen Tubing* - 1648 Brevard Road, Arden
■ Hominy Creek River Park (Buncombe County Parks and Recreation Department)
— 194 Hominy Creek Road, Asheville (last public pull out exit point moving
downstream)
■ Asheville Adventure Company* - 521 Amboy Road, Asheville (last emergency
private pull out exit point moving downstream)
o Notification signage will be placed at the following downstream locations (listed starting
with the first downstream location and moving in order downstream to the Craggy Dam;
Figure 1A); all are public with the exception of the privately owned launches marked with
an asterisk (*):
■ River Arts District Access (North Carolina Wildlife Resources Commission) — 190
Riverside Drive (last public pull out exit point moving upstream)
■ French Broad Outfitters* - 704 Riverside Drive, Asheville
■ Woodfin Riverside Park River Access (Woodfin Parks & Recreation Department) -
1598 Riverside Dr, Woodfin
o Signage on the cofferdam structures to warn river users away and prevent river users
from using the cofferdam structures as a stopping/resting point.
■ Physical restrictions:
o Use of a floating navigational aide to mark the safe passage lane around the cofferdam
structures.
o Steady-state red lights that are solar -powered will be placed on the cofferdam to alert
river user to its location. Generators will not be used to provide power. These lights will
be set atop the cofferdam bladder for the duration the cofferdam is in use. The contractor
Page 3 of 4

River Safety Plan
Carrier Bridge Pump Station — North and South River Crossings
will be responsible for maintaining these lights at all times during construction, replacing
them as necessary.
■ Contractor requirements:
o Develop a river traffic plan to include below items:
■ Provide one or more flaggers upstream as needed to stop river use at limited
times when working in the river (e.g., cofferdam installation/removal, blasting).
■ Training of construction staff to teach skills in aiding a distressed boater — This is
meant as an extra precaution for both staff and river users. It does NOT imply that
the contractor will provide "lifeguard" type services.
■ Crews working in or near the water must wear a life vest.
■ Crews working in the water and cofferdam area must have a boat on site.
Page 4 of 4

f
• ' � Patk
Craggy Dam
Reservoir
• - Woodfin Riverside Park River Access
1596 Riverside Dr, Woodfin
+ French Broad Outfitters; - 704
_ • • � • Riverside Drive, Asheville
Asheville Au IN- e
Company*
Amboy Road,
Asneullle
Asheville
River Arts District Access
fill -190 Riverside Drive
Hominy Creek River Park - 194
Hominy Creek Road, Asheville
Forest t '
Bent Creek Ri erg
Park.Ac ess
r
• � Zen Tubingy, - 1648
Brevard Road, Arden
Corcoran Paige River Park
Beer Cty Tubing - Glenn — 9 Pinners Road, Arden
Bridge Road, ArdenINE
Pisgan lua-tional Glen Bridge Road - 77
Forest Pinners`Road, Arden Fletcher
Westfeldt Park - 83 Old �•
*Fan ing Bridge R ad, Fletcher a ,
♦ 4Y4
O �♦
jV,• MDIIs Riu-r •
Mills River Park Access - 124
o r
- o Town Center Drive, Mills River

LEGEND_
French Broad River O
V
Mills River �cy
O River Access Points
Counties
Municipalities
DATA SOURCE: United States
Geological Survey
N
0 10,000
Feet
7..W_,Ldmw�A
�N
161,
o.
F25 Parkwa Road
a {`Its,
d r�
■VJG � G ■\�G■ Y�rV llrrGJJ .
5437 Brevard Road, Horse Shoe
(Blantyre River Access
'Grove Bridge, Etowah •
vat Ramp - 170
Drive, Penrose
1
/A •
Wilson Road River Access -
Wilson Road, Pisgah Forest WE
Hap c
Greer
Island or River /
Island Ford Road,
ver Access
ad, Rosman
1*% / 1 9111'iZIM
Mate
v ,.R ►ti
Y-- -. 0
r
TT ►� /fir I �i
t
MSD CARRIER BRIDGE
FN= SIGNAGE POSTING AT RIVER ACCESS/EXIT POINTS
.d Figure 113
\\CUSMAIN\GIS DATA\GIS\PROJECTS\06]1 MSD BUNCOMBE\10196360 CARRIERBRIDGEPS UPDATED\].2 WIPVu1AP DOCS\MSD CARRIERBRIDGE ROUND2.- DATE 1I2J 23 RIVER SAFETY PLAN