HomeMy WebLinkAboutAttachment B_Plan SetSOLICITATION NO.:
CONTRACT NO.:
ISSUE DATE:
SEATTLE DISTRICT
FY26 P2-576657 CEDAR LB CED-01-26
CEDAR RIVER LEFT BANK LEVEE REPAIR
KING COUNTY, WA
W912DW-26-Q-A052
05 JUN 2026
US Army Corps
of Engineers ®
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G-001
PREPARED BY:SUBMITTED BY:
APPROVED BY:RECOMMENDED BY:REVIEWED BY:
THIS PROJECT WAS DESIGNED BY THE SEATTLE
DISTRICT OF THE U.S. ARMY CORPS OF
ENGINEERS. THE INITIALS OR SIGNATURES AND
REGISTRATION DESIGNATIONS OF INDIVIDUALS
APPEAR ON THESE PROJECT DOCUMENTS WITHIN
THE SCOPE OF THEIR EMPLOYMENT AS REQUIRED
BY ER 1110-1-8152.
ANIL L. NISARGAND, P.E.
Chief, Specs. and Tech Review
JENNIFER L. WEST, P.E.
Chief, Civil Section
GUY L. GREEN, P.E.
Chief, Design Branch
OTIS HATFIELD
Project Manager
CATHERINE M. PETROFF, Ph.D., P.E.
Chief, Engineering Division
MT. VERNON
EVERETT
TACOMA
OLYMPIA
SKAGIT BAY
POSSESION SOUND
PUGET SOUND
CARR INLET
CASE INLET
NI
S
Q
U
A
L
L
Y
R
E
A
C
H
BU
D
D
I
N
L
E
T
PORT TOWNSEND BAY
BELLINGHAM BAY
LUMMI BAY
SAMISH BAY
PADILLABAY
RO
S
A
R
I
O
S
T
R
A
I
T
SEMIAHMOO BAY
BOUNDARY BAY
STRAIT OF GEORGIA
SALISH SEA
TRI
N
C
O
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A
L
I
C
H
A
N
N
E
L
B R I T I S H C O L U M B I A
W A S H I N G T O N
I D A H O
O R E G O N
MONTANA
BELLINGHAM1
5
5
90
90
90
ABERDEEN
YAKIMA
SEATTLE
KENNEWICK
WALLA WALLA
PULLMAN
LEWISTON
SPOKANE
COLVILLE
JBLM
BRIDGEPORT
MCNARY DAM
YTC
WENATCHEE
PORTLAND
LA GRANDE
DWORSHAK DAM
82
N
PACIFIC
OCEAN
ELLENSBURG
84
395
410
26
LIBBY
DAM
MUD MOUNTAIN DAM
PROJECT
DRAWING INDEX
GENERAL
SITE
G-001 COVER SHEET, INDEX, AND LOCATION MAPS
C-001 SITE ACCESS AND STAGING AREAS
CS101 SITE PLAN
C-301 TYPICAL REPAIR SECTION - SITE 1
PROJECT LOCATION MAP
NTS
PROJECT VICINITY MAP
NTS C-302 TYPICAL REPAIR SECTION - SITE 2
C-501 EXISTING PHOTOS
CEDAR RIVER LEFT BANK
PROJECT LOCATION
TUKWILA
RENTON
MERCER
ISLAND
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RECEIVED
07/08/2026
AMorganroth
PLANNING DIVISION
06/26/2026
RENTON MUNICIPAL
AIRPORT
RENTON MEMORIAL
STADIUM
RENTON
BOEING
FIRE STATION
C
E
D
A
R
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I
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R
ACCESS POINT E. PERIMETER RD
AND AIRPORT WAY
N 6TH ST.
N 5TH ST.
N. 4TH ST.
LO
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N
A
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E. PERIMETER RD.
AIRPORT WAY
E
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P
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STAGING AREA
ACCESS ROUTE
29+00
30+00
31+00
32+00
33+00
34+00
35+00
36+00
37+00
38+00
39+00
40+00
41+00
42+00
43+00
44+00
45+00
46+00
47+00
48+00
49+00
50+00
51+0
0
52+0
0
53+0
0
54+0
0
55+0
0
56+00
57+
0
0
58+0
0
59+
0
0
60+00
61+
0
0
62+
0
0
63+
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0 63+
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8
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C-001SCALE: 1' = 60'
SITE ACCESS AND STAGING AREAA1
N
0 60'120'30'
GENERAL NOTES:
1. LIMIT CONSTRUCTION ACTIVITIES TO WORK AREAS SHOWN.
2. PROJECT ACCESS WILL BE FROM AIRPORT WAY AND E.
PERIMETER RD.
3. STAGING AREA WILL BE LOCATED DIRECTLY BEHIND
(LANDWARD) OF THE EXISTING FLOODWALL, AS SHOWN.
4. FOLLOWING COMPLETION OF CONSTRUCTION; RESTORE
PROJECT WORK, ACCESS, AND STAGING AREAS TO MATCH (OR
IMPROVE) PRE-CONSTRUCTION CONDITIONS.
5. LOCATE UNDERGROUND AND OVERHEAD UTILITIES AS
APPLICABLE, PRIOR TO COMMENCING WORK.
6. THERE ARE CULVERTS/OUTFALLS WITHIN THE REPAIR
AREA. PROTECT EXISTING CULVERTS/OUTFALLS FROM
DAMAGE DURING CONSTRUCTION. MAINTAIN CURRENT
INVERT ELEVATIONS AS IS.
LEGEND:
ACCESS ROUTE
STAGING AREA
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STA 46+00
UPSTREAM REPAIR LIMIT
OF SITE 2
N 181,086.09
E 1,299,657.73
STA 35+50
DOWNSTREAM
REPAIR LIMIT
OF SITE 1
N182,111.27
E 1,299,42.33
EXISTING FLOOD WALLEXISTNG
LEVEE ALIGNMENT
EXISTING
LEVEE ALIGNMENT
RENTON MUNICIPAL
AIRPORT
STA 39+00
N 181,764.95
E 1,299,489.97
B
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I
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B
R
I
D
G
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CEDAR RIV
E
R
STA 38+50
N 181,813.55
E 1,299,478.54
3
2
+
0
0
3
3
+
0
0
3
4
+
0
0
3
5
+
0
0
3
6
+
0
0
3
7
+
0
0
3
8
+
0
0
3
9
+
0
0
4
0
+
0
0
4
1
+
0
0
4
2
+
0
0
4
3
+
0
0
4
4
+
0
0
4
5
+
0
0
4
6
+
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0
4
7
+
0
0
4
8
+
0
0
4
9
+
0
0
5
0
+
0
0
NO REPAIR WORK
UNDER BOEING
BRIDGE
STA 42+00
CONSTRUCTION INTERFACE
OF SITE 1 AND SITE 2
N 181,475.91
E 1,299,568.31
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CS101
SCALE: 1' = 60'
CEDAR RIVER LEFT BANK LEVEE SITE PLANA1
N
0 60'120'30'
GENERAL NOTES:
1. LIMIT CONSTRUCTION ACTIVITIES TO WORK AREAS SHOWN.
2. LEVEE REPAIR SITE 1 SPANS FROM STA 35+50 TO 38+50
AND 39+00 TO 42+00. REPAIR SITE 2 SPANS FROM STA
42+00 TO 46+00, AS SHOWN. TOTAL REPAIR LENGTH IS 1,000
LF INCLUDING TRANSITIONS. STATIONING DERIVED FROM
THE NATIONAL LEVEE DATABASE (NLD). NO WORK WILL
OCCUR UNDER BOEING BRIDGE.
4. TRANSITION UPSTREAM AND DOWNSTREAM ENDS OF
REPAIR TO SMOOTHLY TIE INTO EXISTING SLOPES AND
ELEVATIONS.
5. IN-WATER WORK WINDOW IS FROM JULY 1 TO AUGUST 31.
6. THERE ARE CULVERTS/OUTFALLS WITHIN THE REPAIR
AREA. PROTECT EXISTING CULVERTS/OUTFALLS FROM
DAMAGE DURING CONSTRUCTION. MAINTAIN CURRENT
INVERT ELEVATIONS AS IS.
7. HORIZONTAL DATUM SHOWN IS NAD83 (2011) WASHINGTON
STATE PLANE, NORTH ZONE, UNITS IN US SURVEY FEET.
ELEVATIONS SHOWN ARE IN US SURVEY FEET, VERTICAL
DATUM NAVD88.
C
-
3
0
2
A
1
LEGEND:
CED-01-26 LEVEE REPAIR LIMITS
C
-
3
0
1
A
1
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1
C-301SCALE: NTS
CEDAR RIVER LEFT BANK LEVEE - TYPICAL REPAIR SECTION - SITE 1 - STA 35+50 TO 38+50 AND 39+00 TO 42+00A1
EXISTING CONCRETE
FLOODWALL
PRE-DAMAGE TOE
AND SLOPE
APPROXIMATE EXISTING
DAMAGED CONDITION
NATURAL BANK
RIVERWARD SIDE
2.5' LAYER OF
CLASS III RIPRAP
TOTAL REPAIR LENGTH = 600 LF
1
2
OHW MARK
6'
6'
6"
EXISTING STEEL
SHEETPILE
5'6" LAYER OF TOPSOIL
GENERAL NOTES:
RECOMMENDED REPAIR STEPS:
1. LIMIT CONSTRUCTION ACTIVITIES TO WORK AREAS SHOWN.
2. LOCATE UNDERGROUND AND OVERHEAD UTILITIES AS APPLICABLE, PRIOR
TO COMMENCING WORK.
3. PROJECT EXTENTS AND DIMENSIONS ARE APPROXIMATE. CONTRACTOR
WILL STAKE PROJECT EXTENTS TO BE VERIFIED BY A USACE
REPRESENTATIVE IN THE FIELD PRIOR TO STARTING WORK.
4. ORDINARY HIGH WATER (OHW) TO BE VERIFIED IN THE FIELD BY USACE
REPRESENTATIVE (AS APPLICABLE).
5. SEED MIXTURE FOR HYDROSEED SHALL CONTAIN THE FOLLOWING
SPECIES OF UNTREATED SEEDS WITHIN 2% OF PROPORTIONS SHOWN, BY
WEIGHT: 20% AGROSTIS ALBA OR A. OREGONENSIS, 70% FESTUCA RUBRA,
AND 10% TRIFOLIUM REPENS.
6. MATERIAL GRADATIONS ARE AVAILABLE IN SPECIFICATIONS 35 41 10.61 28.
7. MAINTAIN EXISTING CROWN WIDTH IN AREAS WHERE IT EXCEEDS 5 FEET.
8. RIPRAP USED FOR REPAIR WILL BE INTEGRATED INTO THE EXISTING ROCK.
9. CONSTRUCTED REPAIR SECTION WILL MATCH EXISTING CONDITION BOTH
UPSTREAM AND DOWNSTREAM.
10. ORDINARY HIGH WATER (OHW) TO BE VERIFIED IN THE FIELD BY USACE
REPRESENTATIVE.
11. IN-WATER WORK WINDOW IS FROM JULY 1 TO AUGUST 31.
1. MARK THE PRE-CONSTRUCTION GRADE ELEVATION ON THE FLOODWALL
FACE PRIOR TO STRIPPING. RESTORE FINAL TOPSOIL TO MATCH THE
MARKED ELEVATION.
2. CLEAR, GRUB, AND STRIP EXISTING VEGETATION, DEBRIS, AND UNSUITABLE
MATERIALS FROM THE DESIGNATED REPAIR FOOTPRINT. CAREFULLY STRIP
AND STOCKPILE ANY EXISTING RIPRAP AND VIABLE TOPSOIL FOR RE-USE.
3. EXCAVATE, GRADE, AND SHAPE THE SLOPE TO THE REQUIRED SUBGRADE
ELEVATIONS SHOWN ON THE CROSS-SECTIONS. COMPACT THE SUBGRADE
TO PROVIDE A FIRM, UNYIELDING FOUNDATION PRIOR TO MATERIAL
PLACEMENT.
4. PLACE RIPRAP SUPPLEMENTED BY IMPORTED ROCK TO THE SPECIFIED
THICKNESS, WORKING FROM THE TOE UPWARDS TO THE CREST. ROCK
SHALL BE MACHINE-PLACED (NOT END-DUMPED OR DROPPED FROM A
HEIGHT EXCEEDING 3 FEET) TO PRODUCE A WELL-GRADED, TIGHTLY
INTERLOCKING MASS WITH MINIMAL VOIDS AND TO PREVENT SEGREGATION
OF ROCK SIZES.
5. PLACE 6-INCHES THICK LAYER OF TOPSOIL (SUPPLEMENTED BY IMPORTED
TOPSOIL) ALONG THE CREST OF THE SLOPE AND PREVENT SLOUGHING
WHILE MAINTAINING A VIABLE SEEDBED. HYDROSEED THE PREPARED
TOPSOIL SURFACE.
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-
A
0
5
2
12'
RECOMMENDED REPAIR STEPS
SEE NOTE 1
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
A
B
C
D
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SHEET ID
®
US Army Corpsof Engineers
U.
S
.
A
R
M
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C
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:
AN
S
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FY
2
6
P
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-
5
7
6
6
5
7
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2
C-302SCALE: NTS
CEDAR RIVER LEFT BANK LEVEE - TYPICAL REPAIR SECTION - SITE 2 - STA 42+00 TO 46+00A1
EXISTING CONCRETE
FLOODWALL
PRE-DAMAGE TOE
AND SLOPE
APPROXIMATE EXISTING
DAMAGED CONDITION
NATURAL BANK
RIVERWARD SIDE
TOTAL REPAIR LENGTH = 400 LF
1
2
OHW MARK
6"
EXISTING STEEL
SHEETPILE
3'
6" LAYER OF TOPSOIL
GENERAL NOTES:
RECOMMEDED REPAIR STEPS:
EXISTING RIPRAP
1. LIMIT CONSTRUCTION ACTIVITIES TO WORK AREAS SHOWN.
2. LOCATE UNDERGROUND AND OVERHEAD UTILITIES AS APPLICABLE, PRIOR
TO COMMENCING WORK.
3. PROJECT EXTENTS AND DIMENSIONS ARE APPROXIMATE. CONTRACTOR WILL
STAKE PROJECT EXTENTS TO BE VERIFIED BY A USACE REPRESENTATIVE IN
THE FIELD PRIOR TO STARTING WORK.
4. ORDINARY HIGH WATER (OHW) TO BE VERIFIED IN THE FIELD BY USACE
REPRESENTATIVE (AS APPLICABLE).
5. SEED MIXTURE FOR HYDROSEED SHALL CONTAIN THE FOLLOWING SPECIES
OF UNTREATED SEEDS WITHIN 2% OF PROPORTIONS SHOWN, BY WEIGHT:
20% AGROSTIS ALBA OR A. OREGONENSIS, 70% FESTUCA RUBRA, AND 10%
TRIFOLIUM REPENS.
6. MATERIAL GRADATIONS ARE AVAILABLE IN SPECIFICATIONS 35 41 10.61 28.
7. CONSTRUCTED REPAIR SECTION WILL MATCH EXISTING CONDITION BOTH
UPSTREAM AND DOWNSTREAM.
8. IN-WATER WORK WINDOW IS FROM JULY 1 TO AUGUST 31.
1. MARK THE PRE-CONSTRUCTION GRADE ELEVATION ON THE FLOODWALL
FACE PRIOR TO STRIPPING. RESTORE FINAL TOPSOIL TO MATCH THE
MARKED ELEVATION.
2. CLEAR, GRUB, AND STRIP EXISTING VEGETATION, DEBRIS, AND UNSUITABLE
MATERIALS FROM THE ERODED CREST AND DESIGNATED REPAIR
FOOTPRINT.
3. INSPECT THE EXISTING RIPRAP SLOPE AND RESTORE ANY MINOR, LOCALIZED
ROCK DISPLACEMENT. RE-KEY EXISTING ROCK TO RE-ESTABLISH A TIGHTLY
INTERLOCKING MASS, SUPPLEMENTING WITH IMPORTED ROCK AS
NECESSARY TO FILL VOIDS.
4. PLACE A 6-INCH-THICK LAYER OF TOPSOIL (USING IMPORTED TOPSOIL OR
SUITABLE STOCKPILED MATERIAL) ALONG THE CREST OF THE SLOPE.
5. HYDROSEED THE PREPARED TOPSOIL SURFACE.
05
J
U
N
2
0
2
6
W9
1
2
D
W
-
2
6
-
Q
-
A
0
5
2
RECOMMENDED REPAIR STEPS
SEE NOTE 1
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
A
B
C
D
E
F
G
H
J
K
L
M
N
P
SU
B
M
I
T
T
E
D
B
Y
:
CH
E
C
K
E
D
B
Y
:
DR
A
W
N
B
Y
:
DE
S
I
G
N
E
D
B
Y
:
CO
N
T
R
A
C
T
N
O
.
:
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L
I
C
I
T
A
T
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O
N
N
O
.
:
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S
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D
A
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:
SI
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:
MA
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K
DE
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N
DA
T
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SHEET ID
®
US Army Corpsof Engineers
U.
S
.
A
R
M
Y
C
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R
P
S
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N
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FI
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.
:
AN
S
I
D
FY
2
6
P
2
-
5
7
6
6
5
7
C
E
D
A
R
C
E
D
-
0
1
-
2
6
F2
6
C
E
D
A
R
R
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2
0
5
L
E
V
E
E
L
E
F
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A
N
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2
0
2
6
KI
N
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C-501SCALE: NTS
CEDAR RIVER LEFT BANK - EXISTING PHOTOSA1
CEDAR RIVER LEFT BANK TYPICAL, UPSTREAM ORIENTED - TYPICAL SECTION NEAR STA 36+00
CEDAR RIVER LEFT BANK, UPSTREAM ORIENTED - SITE 1 DAMAGED SECTION NEAR STA 40+00
CEDAR RIVER LEFT BANK, DOWNSTREAM ORIENTED - SITE 2 DAMAGED SECTION NEAR STA 44+00
05
J
U
N
2
0
2
6
W9
1
2
D
W
-
2
6
-
Q
-
A
0
5
2