HomeMy WebLinkAboutTED4003904.7D
�
lJ,
m
Z=
z I
c
mo
��
m-
CP
Nz
m
7
T
CONCRETE WING WALL
TO NORTH
PLACE 6-INCH LAYER CLEAN
SAND -GRAVEL OVER PROPOSED
SEDIMENT SURFACE PER SHEET C2
AND SPECIFICATIONS
EL -1 1.5'
EL -28.5'
RAIL TRACKS
TYPICAL ANNUAL
WATER ELEVATION IS
BELOW ABOUT 10'
TYPICAL SUMMER
WATER ELEVATION IS
BELOW ABOUT 8'7
TRASH RACK
i
_- — — EXISTING SEDIMENT SURFACE,
SEE NOTE 1 - — —
PROPOSED SEDIMENT
SURFACE EL. —4.56
CONCRETE BOTTOM
OF FOREBAY
(SEE NOTE 3)
SEDIMENT REMOVAL ZONE A
kl
w
a
ry
0
co
0
N
0
Q
0
0
V
U
00 FIELD BOOK:
o SURVEYED:
EL -16'
STOP
LOG
SLOT
- EL. -11.56
SEDIMENT
REMOVAL —�
ZONE B
PUMP STATION
EL —9.5'
WESTERN EXTENT OF SURVEY
NOTES:
1) EXISTING
SEDIMENT SURFACE IS BASED ON 2011
BATHYMETRIC
SURVEY, PER THE SURVEY NOTES. SEDIMENT SURFACE WEST OF SURVEY
LIMITS IS
ESTIMATED BASED ON AVERAGE DEPTH
OF SEDIMENT
AT RAIL TRACK.
2) EXISTING
AND PROPOSED SEDIMENT SURFACES AND CONCRETE
APRON APPROXIMATELY TO SCALE (1 "=40' FULL SIZE). STRUCTURE NOT TO
SCALE.
SEE ORIGINAL PUMP STATION DRAWINGS
IN THE APPENDICIES/REFERENCE MATERIAL FOR ADDITIONAL INFORMATION AND DIMENSIONS.
3) SUPPORT
HEAVY CONSTRUCTION EQUIPMENT WITH
CRANE MATS
TO PROTECT CONCRETE APRON.
FLOATATION WATER
SEGMENT SURFACE
SURVEY BASE MAP:
�i
Q
CHECKED:
z
wlJ
SKIRT
(DEPTH
VARIES)
wl
w
W
BALLAST
a CHAIN
TYPICAL NORTH SEDIMENT REMOVAL SECTION
NOT TO SCALE (SEE NOTE 2)
NOTES:
1) FLOATING TURBIDITY CURTAINS SHALL BE TYPE II
CURTAINS, SEE SPECIFICATIONS.
2) ANCHOR TURBIDITY CURTAINS TO PREVENT DRIFT.
INSTALL CURTAINS AS CLOSE TO PROJECT SITE
AS POSSIBLE.
3) MAINTAIN TURBIDITY CURTAIN FULL DEPTH OF
WATER COLUMN AND ADJUST HEIGHT AS NEEDED
TO ACCOUNT FOR EXCAVATION OF SEDIMENT AND
SO THAT SEDIMENT ACCUMULATION ON CURTAIN
LAYING ON MUDLINE DOES NOT COMPROMISE
PERFORMANCE OF CURTAIN.
4) UPON COMPLETION OF THE WORK, REMOVE
TURBIDITY CURTAINS IN A MANNER THAT WILL
MINIMIZE THE RELEASE OF TURBIDWATER AND
COMPLY WITH SPECIFIED WATER QUALITY
REQUIREMENTS.
TURBIDITY CURTAIN -DETAIL
NOT TO SCALE C2
NUM. 1 REVISION I BY I DATE
APPROVED:
C2
ANCHOR WEIGHTS
ANCHOR
GEOMEMBRANE
EXTEND PLASTIC
SHEETING OVER
BLOCK TO
CAPTURE
RUN-OFF
(TYP.)
BI��,t�,
�� 0� VYASx j�C�r�Y
� or
PROJECT T. BEAN, E. PETERS
MANAGER:
DESIGNED: J. BINGHAM
CHECKED: G. HORVITZ
DESIGN ENTERED: E. LINDQUIST
37844
SSIONAL E��' 3/t I*
3 2016
PROJECT No. —
3 2016
3 2016
3 2016 CONTRACT No.
CONCRETE WING WALL
TO SOUTH
PLACE 6—INCH LAYER CLEAN
SAND —GRAVEL OVER PROPOSED
SEDIMENT SURFACE PER SHEET C2
AND SPECIFICATIONS
EL N 1 1.5'
TYPICAL ANNUAL
WATER ELEVATION IS
BELOW ABOUT 10'
TYPICAL SUMMER
WATER ELEVATION IS7
BELOW ABOUT 8'
TRASH RACK
EXISTING SEDIMENT SURFACE,
SEE NOTE 1 -
PROPOSED SEDIMENT
SURFACE EL. -4.56
CONCRETE BOTTOM
OF FOREBAY
(SEE NOTE 3)
SEDIMENT REMOVAL ZONE A
EL —28.5'
RAIL TRACKS
N 16'
- EL. -11.56
SEDIMENT
REMOVAL —�
ZONE B
STOP
LOG
SLOT
PUMP STATION
PUMP
EL -9.5'
WESTERN EXTENT OF SURVEY
NOTES:
1) EXISTING
SEDIMENT SURFACE IS BASED ON 2011
BATHYMETRIC
SURVEY, PER THE SURVEY NOTES. SEDIMENT SURFACE WEST OF SURVEY
LIMITS IS
ESTIMATED BASED ON AVERAGE DEPTH
OF SEDIMENT
AT RAIL TRACK.
2) EXISTING
AND PROPOSED SEDIMENT SURFACES AND CONCRETE
APRON APPROXIMATELY TO SCALE (1 "=40' FULL SIZE). STRUCTURE NOT TO
SCALE.
SEE ORIGINAL PUMP STATION DRAWINGS
IN THE APPENDICES/REFERENCE MATERIAL FOR ADDITIONAL INFORMATION AND DIMENSIONS.
3) SUPPORT
HEAVY CONSTRUCTION EQUIPMENT WITH
CRANE MATS
TO PROTECT CONCRETE APRON.
TYPICAL SOUTH SEDIMENT REMOVAL SECTION
STOCKPILED SEDIMENT
6 MIL (MIN.)
PLASTIC SHEETING
20 FT.
MAX.
III III III ���
li Ifl Ili ICI
I�I
�i SEE NOTE 3
III it
1I I
I�------ ____
- -- --------------- ---- III
----,-- -_ ---- -----
INTERLOCKING ECOLOGY \I ` 40 MIL (MIN.) HDPE OR 30 MIL (MIN.)
BLOCK WALL POLYETHYLENE GEOMEMBRANE
SEE NOTE 6) (NP.)
KC: 1120590
HC: 1789407
C01043C16
NOT TO SCALE (SEE NOTE 2)
GEOMEMBRANE PROTECTION R=3 90401
(SEE NOTE 2)
SEDIMENT STOCKPILE DETAIL
NOT TO SCALE
C3
C2
NOTES:
1) CONSTRUCT A WATERTIGHT BASIN CAPABLE OF STORING THE
ANTICIPATED VOLUME OF EXCAVATED SEDIMENT.
2) INSTALL AND ANCHOR GEOMEMBRANE IN ACCORDANCE WITH
MANUFACTURER'S RECOMMENDATIONS. PROTECT THE BOTTOM AND
TOP OF THE GEOMEMBRANE FROM DAMAGE DUE TO SUBGRADE
SOIL AND EQUIPMENT TRAFFIC, RESPECTIVELY. NON —WOVEN
GEOTEXTILE, PLYWOOD, OR SAND ARE EXAMPLES OF ACCEPTABLE
GEOMEMBRANE PROTECFTION MATERIALS (SEE SPECIFICATIONS).
3) SLOPE STOCKPILES TO MAINTAIN STABILITY OF STOCKPILE, WORKER
SAFETY, AND PREVENT DAMAGE TO ADJACENT FEATURES.
4) WEIGH DOWN PLASTIC SHEETING WITH TIRES, SANDBAGS, OR
EQUIVALENT.
5) WEIGHT OR TAPE SEAMS BETWEEN PLASTIC SHEETS AND PROVIDE
A MINIMUM OVERLAP OF 12 INCHES.
6) 2 FT. X 2 FT. X 6 FT. CONCRETE BLOCK SIZE REQUIRED. PLACE
BOTTOM BLOCK ROW PERPENDICULAR TO TOP ROW. KEEP DECANT
WATER LEVEL BELOW TOP OF BOTTOM BLOCK UNLESS WALL
HYDROSTATIC PRESSURE RELIEF IS PROVIDED. CONTRACTOR MAY
SUBMIT AN ALTERNATE STOCKPILE CONTAINMENT METHOD TO
PROJECT REPRESENTATIVE FOR APPROVAL.
King County
A Department of Natural Resources and Parks
Water and Land Resources Division
MRTCROWWR Regional Services Section
Christie True, Director
RGCOmmended for Approval
By Date
BLACK RIVER PUMP STATION SHEET
SEDIMENT REMOVAL ca
OF
9
g'fpq(pLW4 pEC/WTNQ gfAQ1,K3 AREA SHEETS
12011-06
0
D
z
c
co
�y
a
�x
0
o�
¢b
�>
1
z
Q