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- 2017-2019 MAINTENANCE DREDGING, DILLINGHAM HARBOR, DILLINGHAM, ALASKA Federal contract opportunity
- Solicitation number
- W911KB-17-B-0001
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| W911KB-B-0001_AM_1.pdf | ||
| Dwgs-Exhibits801-802-DHA007-IFB_FullSize.pdf | ||
| Dwgs-Exhibits803-804-DHA007-IFB_FullSize.pdf | ||
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Text version
of Engineers
Alaska District
US Army Corps
2017 - 2019 HARBOR
MAINTENANCE DREDGING
W911KB-17-B-0001
DILLINGHAM, ALASKA
DHA007
IFB, 17 OCTOBER 2016
D r a w i n g x U
N I F
I E
D E
N C
W J o b s D
H A
D w g s C
A D
D
H A
G d w g l a s t s a v e d o n
P
M w a s p l o t t e d b y
K o s t e r
R e b e c c
E
P
O A
A
M
Drawing # 5-DIL-91-01-06 Sheet 1 of 10
P2 NO. 102409
TABLE OF CONTENTS
Sheet
Num
Sheet
Number
Sheet Title
GENERAL: GENERAL
1 G-001 COVER SHEET
GENERAL: PLANS
2 G-101 LOCATION AND VICINITY MAP
CIVIL: PLANS
3 C-101 SITE PLAN AND SURVEY CONTROL
4 C-102 DREDGED MATERIAL DISPOSAL SITE
CIVIL: SECTIONS
5 C-301 TYPICAL SECTION
EXHIBIT DRAWINGS: PLANS
6 X-801 EXHIBIT-1
7 X-802 EXHIBIT-2
8 X-803 EXHIBIT-3
9 X-804 EXHIBIT-4
10 X-805 EXHIBIT-5
FAIRBANKS
ARCTIC OCEANCHUCKCHI SEA
0 200 400 600 800
Scale in Miles
LOCATION/VICINITY MAP(S)
JUNEAU
BERING SEA
ALEUTIAN ISLANDS
ATKA
GULF OF ALASKA
BRISTOL
BAY
C
O
I
N
L
E
T
NOME
KOTZEBUE
BARROW
ANCHORAGE
DILLINGHAM HARBOR
DILLINGHAM, ALASKA
LEVEL
EXT. HIGH WATER LEVEL
MEAN HIGHER HIGH WATER (MHHW)
MEAN HIGH WATER (MHW)
MEAN SEA LEVEL (MSL)
MEAN TIDE LEVEL (MTL)
MEAN LOW WATER (MLW)
MEAN LOWER LOW WATER (MLLW)
EXT. LOW WATER LEVEL
ELEVATION
(FT MLLW)
+25.0
+20.6
+18.9
+10.8
+10.6
+2.3
0.0
-4.9
TIDAL DATA, DILLINGHAM, ALASKA
9465374 SNAG POINT, DILLINGHAM, AK
SOURCE: NOAA NATIONAL OCEAN SERVICE
PUBLISHED 04/29/2013, TIDAL EPOCH: 1983-2001
GENERAL NOTES
1. NO CONTRACTOR'S STAGING AREA IS PROVIDED FOR THIS
CONTRACT.
2. THE PROJECT SITE IS SUBJECT TO HIGH WINDS, WAVES, AND
CURRENTS. SUCH WAVE AND CURRENT CONDITIONS CAN AND DO
OCCUR ANY TIME IN OPEN WATER. THE CONTRACTOR SHALL PLAN
AND PERFORM ITS CONSTRUCTION ACTIVITIES AND SEQUENCE TO
TAKE INTO ACCOUNT SUCH CONDITIONS.
3. ICE CONDITIONS IN THE NUSHAGAK RIVER VARY FROM YEAR TO
YEAR. THE HARBOR MOORING BASIN AND ENTRANCE CHANNEL MAY
STILL BE FROZEN FOR SEVERAL WEEKS AFTER BREAKUP IN THE
RIVER.
4. THE CONTRACTOR SHALL TAKE ALL APPROPRIATE PRECAUTIONS
TO AVOID ANY DISTURBANCE OF THE EXISTING FACILITIES AND
OTHER HARBOR INFRASTRUCTURE LOCATED IN THE VICINITY OF
THE PROJECT SITE.
5. THE CONTRACTOR SHALL COORDINATE WITH THE CITY OF
DILLINGHAM HARBORMASTER, FUEL COMPANIES, AND FISH
PROCESSORS TO MINIMIZE DISRUPTION OF HARBOR OPERATIONS.
ALASKA DISTRICT
D R
A W
I N
G
F I L
E
D W
G
S
C A
L E
P L
T
S
C A
L E
D A
T E
A C
T I O
N S
Y M
D R
A W
N
R E
S I D
E N
T
E
N G
I N
E E
R
D A
T E
S T
A T
E
P R
I M
E
C
O N
T R
A C
T O
R
D A
T E
D E
S C
R I P
T I O
N A
P P
D
C I T
Y
C O
N T
R A
C T
O R
C O
N T
R A
R E
C O
M M
E N
D E
D
A P
P R
O V
E D
S U
B M
I T
T E
D
D E
S I G
N E
D
R E
V I E
W E
D
O F
F I C
E
S
Y M
O F
F I C
E
S
Y M
U S
A
R M
Y
E
N G
I N
E E
R
D
I S
T R
I C
T
A N
C H
O R
A G
E
A
L A
S K
A
C O
R P
S
O
F
E
N G
I N
E E
R S
REFERENCE
NUMBER:
SHEET OF
US ARMY CORPS
OF ENGINEERS
A
B
C
D
E
F
G
H
1 2 3 4 5 6 7 8 9 10 11 12
D r a w i n g x U
N I F
I E
D E
N C
W J o b s D
H A
D w g s C
A D
D
H A
G d s t s a v e d o n
P
M w a s p l o t t e d b y
K l o s t e r
R e b e c
A
D
I L
D H
A
P
N
O
W K
B B
O
C T
O B
R
IFB
H
A R
B O
R
M
A I N
T E
N A
N C
E
D
R E
D G
I N
G
D I L
L I N
G H
A M
A
L A
S K
A
T
E D
C E
P O
A E
C G
D
B
L I S
S
E C
G
H
H
K
E
I S
S E
S
R E
K
R E
K
G E
N E
R A
L
D H
A
G
P L
A N
S
G-101
L O
C A
T I O
N
A
D
V
C
I N
I T
Y
M
A P
PROJECT LOCATION
(SEE INSET BELOW)
NOAA CHART 16322, BRISTOL BAY - NUSHAGAK BAY AND APPROACHES
DATED MAY 2014, 9TH ED.
SOUNDINGS ARE IN FEET, DATUM: MEAN LOWER LOW WATER (MLLW)
NOTE:
FOR DETAILED NOAA CHART INFORMATION SEE
http://www.charts.noaa.gov/OnLineViewer/AlaskaViewerTable.shtml
SOURCE:
INSET FROM NOAA CHART 16332
SOURCE:
GOOGLE EARTH
IMAGERY DATED OCT. 30, 2005
PROJECT
LOCATION
DREDGING
LIMITS
MOORING
BASIN
ENTRANCE
CHANNEL
ROCK SILL
(PARTIALLY REMOVED)
DREDGED MATERIAL
DISPOSAL SITE
N
U
S
H
A
G
V
E
R
AutoCAD SHX Text 59%%d02'20"
AutoCAD SHX Text 59%%d02'10"
AutoCAD SHX Text 59%%d02'30"
AutoCAD SHX Text 158%%d27'30"
AutoCAD SHX Text 158%%d28'00"
AutoCAD SHX Text 158%%d28'30"
AutoCAD SHX Text 158%%d29'00"
AutoCAD SHX Text
TO AIRPORT
AutoCAD SHX Text
MLLW
AutoCAD SHX Text
MHHW
AutoCAD SHX Text
ENTRANCE
AutoCAD SHX Text
MOORING
AutoCAD SHX Text
NUSHAGAK RIVER
AutoCAD SHX Text
BASIN
AutoCAD SHX Text
DREDGING
AutoCAD SHX Text
LIMITS
AutoCAD SHX Text
CHANNEL
AutoCAD SHX Text
DREDGED MATERIAL
AutoCAD SHX Text
DISPOSAL SITE
AutoCAD SHX Text
VICINITY MAP
AutoCAD SHX Text
PROJECT
AutoCAD SHX Text
DILLINGHAM
AutoCAD SHX Text N
AutoCAD SHX Text
LOCATION
AutoCAD SHX Text
ROCK
AutoCAD SHX Text
SILL
DL-01
DL-02
DL-03
DL-04
DL-05
DL-06
DL-07
DL-08
DL-09
DL-10
SL-03
SL-04
SL-05
SL-06
SL-07
SL-08
SL-09
SL-10
SL-11
SL-12
SL-01
D
R
E D
G
E L
IM
IT
S
D
R
E D
G
E
L I M
I T
S
D
R
E
D
G
L
M
I T
S
D
R
E D
G
E
L I M
I T
S
D
R
E D
G
E L
IM
IT
S
1277-1 1984
1277-2 1984
1277-3 1984
DIL 1998
PICKEL 1998
WDS-2 2001
10+00.00
11+00.00
12+00.00
13+00.00
14+00.00
15+00.00
16+00.00
17+00.00
18+00.00
19+00.00
20+00.00
21+00.00
22+00.00
23+00.0023+00.01
R I P
R A
P
S H
E E
T P
IL
E
R
A
M
P
RIPRAP
S
C
A
N
D
I
N
A
V
I
E
E
K
D O
C K
D
O
C
K
R
A
M
P
F
L
O
A
T
R
A
M
P
P
U
B
L
R
K
I N
G
HARBORMASTER OFFICE
ROCK SILL
(PARTIALLY REMOVED)
EXIST. CMP
(APPROX. LOCATION)
PETER PAN PROPERTY
(OLD DISPOSAL SITE)
(NOT IN THIS CONTRACT)
D
IK
E
D
I K
E
D
I K
E
D
I K
E
MOORING BASIN
DREDGE TO 0.0' MLLW
(MAX PAYLINE -2.0' MLLW)
ENTRANCE CHANNEL
DREDGE TO 0.0' MLLW
(MAX PAYLINE -2.0' MLLW)
SEE SHEET C-102 FOR
DREDGED MATERIAL DISPOSAL
SITE IN THE NUSHAGAK RIVER
(THIS CONTRACT)
N 1,841,500
N 1,841,000
E
E
E
E
E
E
N 1,840,500
E
E
N 1,841,750
E
E
N 1,841,250
N 1,840,750
E
E
N 1,840,500
E
N 1,840,750
N 1,841,000
N 1,841,250
N 1,841,500
N 1,841,750
E
S
U
R
V
Y
M
I T
S
S
U
R
V
M
I
T
S
SL-02
S U
R
V E
Y
L I M
I T
S
S U
R
V E
Y L
IM
IT
S
S U
R
V E
Y
L I M
I T
S
CONTROL DATA
STATION
1277-1 1984
1277-2 1984
1277-3 1984
5374 A 2007
5374 B 2007
DIL 1998
DILLINGHAM 1947
DILLINGHAM AZ MK
PICKEL 1998
WDS-2 2001
NORTHING
1,841,622.39
1,840,494.00
1,840,427.98
1,840,570.45
1,840,567.99
1,840,505.33
1,849,383.08
1,841,347.21
1,841,509.51
1,841,419.33
EASTING
1,550,745.71
1,550,879.74
1,550,887.60
1,553,897.99
1,553,619.36
1,550,674.26
1,551,809.45
1,553,844.91
1,550,437.81
1,549,910.66
ELEV.
32.11
30.86
30.21
25.62
24.87
29.80
28.82
22.77
DESCRIPTION
3.25" USACE SBC
3.25" USACE SBC
3.25" USACE SBC
STAINLESS STEEL ROD
STAINLESS STEEL ROD
3.25" FLAT ALUMINUM CAP
3.5" USCGS SBC
USCGS 2" IRON PIPE
3.25" FLAT ALUMINUM CAP
3.25" DOMED ALUMINUM CAP
DREDGING LIMITS
CORNER
DL-01
DL-02
DL-03
DL-04
DL-05
NORTHING
1,840,656.89
1,840,645.10
1,840,669.87
1,841,364.89
1,841,318.54
EASTING
1,550,430.66
1,550,447.69
1,550,654.63
1,550,571.44
1,550,184.21
DREDGING LIMITS
CORNER
DL-06
DL-07
DL-08
DL-09
DL-10
NORTHING
1,840,930.19
1,840,662.40
1,840,535.05
1,840,531.77
1,840,653.73
EASTING
1,550,305.22
1,550,337.15
1,550,329.96
1,550,369.82
1,550,376.57
SURVEY LIMITS
CORNER
SL-01
SL-02
SL-03
SL-04
SL-05
SL-06
NORTHING
1,840,423.95
1,840,458.17
1,840,564.87
1,840,610.25
1,841,437.06
1,841,461.80
EASTING
1,550,449.36
1,550,413.54
1,550,408.42
1,550,787.66
1,550,688.69
1,550,593.75
SURVEY LIMITS
CORNER
SL-07
SL-08
SL-09
SL-10
SL-11
SL-12
NORTHING
1,841,405.12
1,841,432.20
1,841,432.01
1,841,362.83
1,840,909.22
1,840,362.44
EASTING
1,550,578.98
1,550,396.29
1,550,133.89
1,550,065.66
1,550,207.01
1,550,272.21
NOTES
HORIZONTAL CONTROL:
1. PRIMARY PROJECT HORIZONTAL CONTROL IS ALASKA STATE PLANE, ZONE 6, NAD83
(2011), IN US SURVEY FEET BASED ON NGS PUBLISHED VALUES, HOLDING USC&GS
STATION "DILLINGHAM 1947" (PID UV7691) AS N 1,849,383.08', E 1,551,809.45 AND USC&GS
AZIMUTH MARK "DILLINGHAM AZ MK 1947" (PID UV7690) AS N 1,841,347.21', E 1,553,844.91'.
LOCAL PROJECT HORIZONTAL CONTROL IS ALASKA STATE PLANE, ZONE 6, NAD83 (2011),
IN US SURVEY FEET HOLDING USACE DOMED BC "1277-3 1984" AS N 1,840,427.98', E
1,550,887.60'.
VERTICAL CONTROL:
2. VERTICAL CONTROL IS MEAN LOWER LOW WATER (MLLW=0.0'), BASED ON NOAA/NOS
TIDAL BENCH MARK LIST: "946 5374, SNAG POINT, NUSHAGAK BAY, DILLINGHAM, ALASKA"
PUBLISHED 04/29/2013. THIS TIDAL DATUM IS BASED ON THE 1983-2001 TIDAL EPOCH AND
IS REFERENCED BY HOLDING HOLDING NOAA/NOS TIDAL BENCHMARK "5374 B 2007" AS
24.87'.
VERTICAL TIES TO THE NATIONAL SPATIAL REFERENCE SYSTEM ARE BASED ON
PUBLISHED NAVD88 (GEOID 12B) ELEVATION HOLDING NOAA SS DRIVE ROD "5374 B 2007"
(PID BBBF17) AS 18.46'.
3. EXISTING FLOATS AND OTHER FACILITIES WITHIN THE DREDGE LIMITS WILL BE REMOVED
SEASONALLY BY THE CITY OF DILLINGHAM. THE CONTRACTOR SHALL COORDINATE WITH
HARBORMASTER FOR SUCH REMOVAL PRIOR TO DREDGING. THE EXISTING PILE
SUPPORTS FOR THE FLOAT SYSTEM WILL NOT BE REMOVED OR DISTURBED.
4. EXISTING FACILITIES WITHIN AND IN THE VICINITY OF THE HARBOR (DOCKS, FLOATS, AND
RAMPS) ARE SHOWN AS APPROXIMATE LOCATIONS AND NOT BASED ON SURVEY DATA.
NOTE: STATION 1277-1, 1277-2, 1277-3, DIL, PICKEL, AND WDS-2 ARE SHOWN IN PLAN VIEW ON
THIS SHEET. OTHER STATIONS ARE LOCATED IN VARIOUS AREAS IN THE VICINITY OF THE
HARBOR.
ELEVATIONS ARE IN FEET AND REFERENCED TO MEAN LOWER LOW WATER (MLLW).
LEGEND: SURVEY MONUMENT
BASELINE DATA
STATION
10+00
23+00
NORTHING
1,840,346.59
1,841,637.43
EASTING
1,550,897.16
1,550,743.04
DESCRIPTION
BEGIN
END
NOTE: SURVEY LIMITS CONTINUED ON SHEET C-102.
ALASKA DISTRICT
D R
A W
I N
G
F I L
E
D W
G
S
C A
L E
P L
A
L E
D A
T E
A C
T I O
N S
Y M
D R
A W
N
R E
S I D
E N
T
E
N G
I N
E E
R
D A
T E
S T
A T
E
P R
I M
E
C
O N
T R
A C
T O
R
D A
T E
D E
S C
R I P
T I O
N A
P P
D
C I T
Y
C O
N T
R A
C T
O R
C O
N T
R A
R E
C O
M M
E N
D E
D
A P
P R
O V
E D
S U
B M
I T
T E
D
D E
S I G
N E
D
R E
V I E
W E
D
O F
F I C
E
S
Y M
O F
F I C
E
S
Y M
U S
A
R M
Y
E
N G
I N
E E
R
D
I S
T R
I C
T
A N
C H
O R
A G
E
A
L A
S K
A
C O
R P
S
O
F
E
N G
I N
E E
R S
REFERENCE
NUMBER:
SHEET OF
US ARMY CORPS
OF ENGINEERS
A
B
C
D
E
F
G
H
1 2 3 4 5 6 7 8 9 10 11 12
D r a w i n g x U
N I F
I E
D E
N C
W J o b s D
H A
D w g s C
A D
D
H A
C d s t s a v e d o n
A
M w a s p l o t t e d b y
K l o s t e r
R e b e c
A
D
I L
D H
A
P
N
O
W K
B B
O
C T
O B
IFB
H
A R
B O
R
M
A I N
T E
N A
N C
E
D
R E
D G
I N
G
D I L
L I N
G H
A M
A
L A
S K
A
ALASKA DISTRICT
D R
A W
I N
G
F I L
E
D W
G
S
C A
L E
P L
A
L E
D A
T E
A C
T I O
N S
Y M
D R
A W
N
R E
S I D
E N
T
E
N G
I N
E E
R
D A
T E
S T
A T
E
P R
I M
E
C
O N
T R
A C
T O
R
D A
T E
D E
S C
R I P
T I O
N A
P P
D
C I T
Y
C O
N T
R A
C T
O R
C O
N T
R A
R E
C O
M M
E N
D E
D
A P
P R
O V
E D
S U
B M
I T
T E
D
D E
S I G
N E
D
R E
V I E
W E
D
O F
F I C
E
S
Y M
O F
F I C
E
S
Y M
U S
A
R M
Y
E
N G
I N
E E
R
D
I S
T R
I C
T
A N
C H
O R
A G
E
A
L A
S K
A
C O
R P
S
O
F
E
N G
I N
E E
R S
REFERENCE
NUMBER:
SHEET OF
US ARMY CORPS
OF ENGINEERS
A
B
C
D
E
F
G
H
1 2 3 4 5 6 7 8 9 10 11 12
D r a w i n g x U
N I F
I E
D E
N C
W J o b s D
H A
D w g s C
A D
D
H A
C d s t s a v e d o n
A
M w a s p l o t t e d b y
K l o s t e r
R e b e c
A
D
I L
D H
A
P
N
O
W K
B B
O
C T
O B
IFB
H
A R
B O
R
M
A I N
T E
N A
N C
E
D
R E
D G
I N
G
D I L
L I N
G H
A M
A
L A
S K
A
T
E D
C E
P O
A E
C G
D
B
L I S
S
E C
G
H
H
K
E
I S
S E
S
R E
K
R E
K
C I V
I L
D H
A
C
P L
A N
S
C-101
S I T
E
P
L A
N
A
D
U R
V E
Y
C
O N
T R
O L
N
Feet
0 100 200
AutoCAD SHX Text A
AutoCAD SHX Text C-101
C-301
SL-15
SL-16SL-13
SL-14
DS-01
DS-02
DS-03
DS-04
D
I
S
P
O
S
M
I
T
S
D
I
S
P
O
S
M
I
T
S
D
I
S
P
O
S
M
I
T
S
D
I
S
P
O
S
M
I
T
S
DREDGED MATERIAL
DISPOSAL SITE
(THIS CONTRACT)
N
U
S
H
A
G
V
E
R
N 1,838,885
E
E
E
E
E
E
E
E
E
E
N 1,840,135
E
N 1,839,885
N 1,839,635
N 1,839,385
N 1,839,135
E
N 1,840,135
E
N 1,839,885
N 1,839,635
N 1,839,385
N 1,839,135
N 1,838,885
E
SEE SHEET C-101 FOR
HARBOR DREDGING SITE PLAN
SURVEY LIMITS
S U
R V
M
I T
S
SURVEY LIMITS
S U
R V
M
I T
S
SL-17
SURVEY LIMITS
CORNER
SL-13
SL-14
SL-15
NORTHING
1,840,166.00
1,839,293.60
1,839,293.60
EASTING
1,550,359.57
1,550,359.57
1,551,455.40
SURVEY LIMITS
CORNER
SL-16
SL-17
NORTHING
1,840,166.00
1,840,166.00
EASTING
1,551,455.40
1,550,808.47
DREDGED MATERIAL (DISPOSAL SITE LIMITS)
CORNER
DS-01
DS-02
NORTHING
1,839,502.58
1,839,739.66
EASTING
1,551,238.87
1,551,159.55
DREDGED MATERIAL (DISPOSAL SITE LIMITS)
CORNER
DS-03
DS-04
NORTHING
1,839,644.47
1,839,407.39
EASTING
1,550,875.05
1,550,954.38
NOTES
1. BATHYMETRY FOR THE DREDGED MATERIAL DISPOSAL AREA IN THE NUSHAGAK RIVER IS
SHOWN ON X-805, THE POST-DREDGE SURVEY PERFORMED BY THE DREDGING
CONTRACTOR IN 2016. CONTOURS ARE IN FEET REFERENCED TO MLLW AND ARE
INDICATIVE OF CONDITIONS AT THE TIME OF THE SURVEY.
2. EXISTING FACILITIES (DOCKS, FLOATS, AND RAMPS) WITHIN AND IN THE VICINITY OF THE
HARBOR ARE SHOWN AS APPROXIMATE LOCATIONS AND NOT BASED ON SURVEY DATA.
AERIAL BACKGROUND PHOTO IS A DIGITALGLOBE GEO-REFERENCED IMAGE TAKEN ON
27 SEPTEMBER 2014.
3. THE DREDGED MATERIAL DISPOSAL AREA IN THE NUSHAGAK RIVER IS SUBJECT TO
STRONG CURRENTS THAT VARY WITH TIDAL FLUCTUATIONS AND FLOW IN THE RIVER.
THE DISPOSAL AREA IS ALSO SUBJECT TO HIGH WAVE ACTION DURING STRONG WINDS.
ALASKA DISTRICT
D R
A W
I N
G
F I L
E
D W
G
S
C A
L E
P L
A
L E
D A
T E
A C
T I O
N S
Y M
D R
A W
N
R E
S I D
E N
T
E
N G
I N
E E
R
D A
T E
S T
A T
E
P R
I M
E
C
O N
T R
A C
T O
R
D A
T E
D E
S C
R I P
T I O
N A
P P
D
C I T
Y
C O
N T
R A
C T
O R
C O
N T
R A
R E
C O
M M
E N
D E
D
A P
P R
O V
E D
S U
B M
I T
T E
D
D E
S I G
N E
D
R E
V I E
W E
D
O F
F I C
E
S
Y M
O F
F I C
E
S
Y M
U S
A
R M
Y
E
N G
I N
E E
R
D
I S
T R
I C
T
A N
C H
O R
A G
E
A
L A
S K
A
C O
R P
S
O
F
E
N G
I N
E E
R S
REFERENCE
NUMBER:
SHEET OF
US ARMY CORPS
OF ENGINEERS
A
B
C
D
E
F
G
H
1 2 3 4 5 6 7 8 9 10 11 12
D r a w i n g x U
N I F
I E
D E
N C
W J o b s D
H A
D w g s C
A D
D
H A
C d s t s a v e d o n
A
M w a s p l o t t e d b y
K l o s t e r
R e b e c
A
D
I L
D H
A
P
N
O
W K
B B
O
C T
O B
IFB
H
A R
B O
R
M
A I N
T E
N A
N C
E
D
R E
D G
I N
G
D I L
L I N
G H
A M
A
L A
S K
A
ALASKA DISTRICT
D R
A W
I N
G
F I L
E
D W
G
S
C A
L E
P L
A
L E
D A
T E
A C
T I O
N S
Y M
D R
A W
N
R E
S I D
E N
T
E
N G
I N
E E
R
D A
T E
S T
A T
E
P R
I M
E
C
O N
T R
A C
T O
R
D A
T E
D E
S C
R I P
T I O
N A
P P
D
C I T
Y
C O
N T
R A
C T
O R
C O
N T
R A
R E
C O
M M
E N
D E
D
A P
P R
O V
E D
S U
B M
I T
T E
D
D E
S I G
N E
D
R E
V I E
W E
D
O F
F I C
E
S
Y M
O F
F I C
E
S
Y M
U S
A
R M
Y
E
N G
I N
E E
R
D
I S
T R
I C
T
A N
C H
O R
A G
E
A
L A
S K
A
C O
R P
S
O
F
E
N G
I N
E E
R S
REFERENCE
NUMBER:
SHEET OF
US ARMY CORPS
OF ENGINEERS
A
B
C
D
E
F
G
H
1 2 3 4 5 6 7 8 9 10 11 12
D r a w i n g x U
N I F
I E
D E
N C
W J o b s D
H A
D w g s C
A D
D
H A
C d s t s a v e d o n
A
M w a s p l o t t e d b y
K l o s t e r
R e b e c
A
D
I L
D H
A
P
N
O
W K
B B
O
C T
O B
IFB
H
A R
B O
R
M
A I N
T E
N A
N C
E
D
R E
D G
I N
G
D I L
L I N
G H
A M
A
L A
S K
A
T
E D
C E
P O
A E
C G
D
B
L I S
S
E C
G
H
H
K
E
I S
S E
S
R E
K
R E
K
C I V
I L
D H
A
C
P L
A N
S
C-102
D R
E D
G E
D
M
A T
E R
I A
L
D
I S
P O
S A
L
S
I T
E
Feet
0 100 200
TYPICAL SECTION - ENTRANCE CHANNEL
AND MOORING BASIN
N.T.S.
STA 12+85 TO 20+50
NOTE
1. THE CONTRACTOR SHALL TAKE ALL APPROPRIATE PRECAUTIONS TO
AVOID ANY DISTURBANCE OF THE EXISTING SHEET PILE DOCKS, PILE
FLOAT SUPPORTS, LAUNCH RAMPS, PILES, AND ANY OTHER HARBOR
FACILITIES LOCATED WITHIN THE PROJECT VICINITY.
2. ALL DREDGING SHALL BE PERFORMED WITH A CUTTERHEAD DREDGE AS
REQUIRED BY SECTION 35 20 24.00 29 MAINTENANCE DREDGING
(PARAGRAPH 3.1 AND ASSOCIATED SUBPARAGRAPHS). SEE PLAN SHEET
C-101 FOR DREDGING LIMITS IN THE ENTRANCE CHANNEL AND MOORING
BASIN.
3. THE FLOAT SYSTEM IS REMOVED ANNUALLY BY THE CITY OF DILLINGHAM.
FLOATS WILL BE REMOVED AND STORED IN AN UPLAND SITE ADJACENT
TO THE HARBOR PRIOR TO THE CONTRACTOR CONDUCTING
PRE-DREDGE SURVEYING AND DREDGING.
4. THE CITY OF DILLINGHAM WILL COORDINATE AND ASSIST IN MOVING
VESSELS AND OTHER HARBOR FACILITIES TO ALLOW SURVEYING AND
DREDGING. THE CONTRACTOR SHALL COORDINATE WITH THE
HARBORMASTER PRIOR TO SURVEYING AND DREDGING.
5. DURING MAINTENANCE DREDGING, THE CONTRACTOR SHALL POSITION
THE CUTTERHEAD DREDGE AND DISCHARGE PIPE IN THE ENTRANCE
CHANNEL AND MOORING BASIN TO MINIMIZE CONFLICT WITH VESSEL
TRAFFIC AND HARBOR OPERATIONS. THE CONTRACTOR SHALL REMOVE
THE DREDGE, DISCHARGE PIPE, AND ASSOCIATED EQUIPMENT EACH
YEAR AFTER THE POST-DREDGE SURVEY HAS BEEN REVIEWED TO
VERIFY REQUIRED DEPTH HAS BEEN ACHIEVED.
6. THE "DREDGING PRISM" FOR THIS CONTRACT IS DEFINED AS THE
VOLUME OF MATERIAL TO BE DREDGED WITHIN THE DREDGING LIMITS,
SLOUGH ALLOWANCES, AND MAX. PAYLINE AS SHOWN ON THE TYPICAL
SECTION (THIS SHEET) AND AS REFERENCED IN SPECIFICATIONS
SECTION 01 22 00.00 10 PRICE AND PAYMENT PROCEDURES (PARAGRAPH
1.3.1 AND ASSOCIATED SUBPARAGRAPHS).
7. SLOUGH ALLOWANCE LIMITS SHOWN ARE HORIZONTAL DISTANCES
WITHIN THE SURVEY LIMITS FOR WHICH THE PAY LIMITS WILL BE THE
VOLUME OF MATERIAL WITHIN AND BETWEEN THE PRE-DREDGE AND
POST-DREDGE SURVEYS NOT TO EXCEED A 1V:8H SLOPE. THE
CONTRACTOR SHALL USE "BOX-CUT" METHODS BY POSITIONING THE
DREDGE CUTTERHEAD AT THE DREDGING LIMITS AND ALLOWING SIDE
SLOPE MATERIAL TO FALL TO THE CUTTERHEAD TO ACHIEVE REQUIRED
DEPTH.
8. THE CONTRACTOR SHALL TAKE SPECIAL PRECAUTIONS TO AVOID
UNDERMINING THE EXISTING RAMPS AT STATIONS 12+50 AND 20+75.
PRECISE EXTENT OF THE TOE OF EACH EXISTING RAMP IS UNKNOWN.
9. THE CONTRACTOR SHALL SEPARATE AND PROPERLY DISPOSE OF ALL
VISIBLY EVIDENT MAN-MADE MATERIAL AND OTHER DEBRIS
ENCOUNTERED DURING DREDGING ACTIVITIES.
REQUIRED DEPTH 0.0' MLLW
MAX. PAYLINE -2.0' MLLW
MATERIAL TO
BE DREDGED
SLOUGH
ALLOWANCE
SLOUGH
ALLOWANCE
VARIES
BASELINE
DREDGING LIMITS
WIDTH VARIES (SEE SHEET C-101)
NOTE: SIDE SLOPE TO
NATURAL ANGLE OF
REPOSE (NO FLATTER
THAN 1V:8H)
NOTE: SIDE SLOPE TO
NATURAL ANGLE OF
REPOSE (NO FLATTER
THAN 1V:8H)
ORIGINAL
GRADE
LEGEND
"DREDGING PRISM"
SIDE SLOPE REQUIREMENTS
SHOWN ALSO APPLY TO THE
NORTHERN AND SOUTHERN
BOUNDARIES OF THE DREDGING
LIMITS SHOWN ON SHEET C-101.
SURVEY LIMITS
ALASKA DISTRICT
D R
A W
I N
G
F I L
E
D W
G
S
C A
L E
P L
A
L E
D A
T E
A C
T I O
N S
Y M
D R
A W
N
R E
S I D
E N
T
E
N G
I N
E E
R
D A
T E
S T
A T
E
P R
I M
E
C
O N
T R
A C
T O
R
D A
T E
D E
S C
R I P
T I O
N A
P P
D
C I T
Y
C O
N T
R A
C T
O R
C O
N T
R A
R E
C O
M M
E N
D E
D
A P
P R
O V
E D
S U
B M
I T
T E
D
D E
S I G
N E
D
R E
V I E
W E
D
O F
F I C
E
S
Y M
O F
F I C
E
S
Y M
U S
A
R M
Y
E
N G
I N
E E
R
D
I S
T R
I C
T
A N
C H
O R
A G
E
A
L A
S K
A
C O
R P
S
O
F
E
N G
I N
E E
R S
REFERENCE
NUMBER:
SHEET OF
US ARMY CORPS
OF ENGINEERS
A
B
C
D
E
F
G
H
1 2 3 4 5 6 7 8 9 10 11 12
D r a w i n g x U
N I F
I E
D E
N C
W J o b s D
H A
D w g s C
A D
D
H A
C d s t s a v e d o n
P
M w a s p l o t t e d b y
K l o s t e r
R e b e c
A
D
I L
D H
A
P
N
O
W K
B B
O
C T
O B
IFB
H
A R
B O
R
M
A I N
T E
N A
N C
E
D
R E
D G
I N
G
D I L
L I N
G H
A M
A
L A
S K
A
ALASKA DISTRICT
D R
A W
I N
G
F I L
E
D W
G
S
C A
L E
P L
A
L E
D A
T E
A C
T I O
N S
Y M
D R
A W
N
R E
S I D
E N
T
E
N G
I N
E E
R
D A
T E
S T
A T
E
P R
I M
E
C
O N
T R
A C
T O
R
D A
T E
D E
S C
R I P
T I O
N A
P P
D
C I T
Y
C O
N T
R A
C T
O R
C O
N T
R A
R E
C O
M M
E N
D E
D
A P
P R
O V
E D
S U
B M
I T
T E
D
D E
S I G
N E
D
R E
V I E
W E
D
O F
F I C
E
S
Y M
O F
F I C
E
S
Y M
U S
A
R M
Y
E
N G
I N
E E
R
D
I S
T R
I C
T
A N
C H
O R
A G
E
A
L A
S K
A
C O
R P
S
O
F
E
N G
I N
E E
R S
REFERENCE
NUMBER:
SHEET OF
US ARMY CORPS
OF ENGINEERS
A
B
C
D
E
F
G
H
1 2 3 4 5 6 7 8 9 10 11 12
D r a w i n g x U
N I F
I E
D E
N C
W J o b s D
H A
D w g s C
A D
D
H A
C d s t s a v e d o n
P
M w a s p l o t t e d b y
K l o s t e r
R e b e c
A
D
I L
D H
A
P
N
O
W K
B B
O
C T
O B
IFB
H
A R
B O
R
M
A I N
T E
N A
N C
E
D
R E
D G
I N
G
D I L
L I N
G H
A M
A
L A
S K
A
T
E D
C E
P O
A E
C G
D
B
L I S
S
E C
G
H
H
K
E
I S
S E
S
R E
K
R E
K
C I V
I L
D H
A
C
S E
C T
I O
N S
C-301
T Y
P I C
C
T I O
N
AutoCAD SHX Text A
AutoCAD SHX Text C-101
C-301
| Sheets and Views |
| G-001 COVER SHEET |
| G-101 LOCATION AND VICINITY MAP |
| C-101 SITE PLAN AND SURVEY CONTROL |
| LAYOUT1 |
| C-102 DREDGED MATERIAL DISPOSAL SITE |
| LAYOUT1 |
| C-301 TYPICAL SECTION |
| LAYOUT1 |
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