Drawing - 9612W-HP0005_REVa.pdf
PDF 816 KB Posted
- Attached to
- Post 45 Lower Harbor Dredging Contract 4 Federal contract opportunity
- Solicitation number
- W912HP20B0003
About this file
This document provides details for a federal dredging contract opportunity with the U.S. Army Corps of Engineers. The solicitation seeks a contractor to perform maintenance and new work dredging of approximately 6.076 million cubic yards of material from the Charleston Lower Harbor Channel and Cooper River in South Carolina. Dredged materials will be placed upland at the Clouter Creek Placement Area and Daniel Island Placement Area, or in the Ocean Dredged Materials Disposal Area. Work includes complying with endangered species and marine mammal regulations. The magnitude of work is estimated between $25-100 million. A formal solicitation was expected on or around May 18, 2020, with amendments issued on August 6 and 10, 2020 providing updates to the solicitation, specifications and drawings as well as additional permits and survey data.
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Text version
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D A T E of Engineers US Army Corps
Charleston District
D e s ig n e d b y
CONTRACT
+0
+0
+0
1530+00
1535+00
1540+00
1545+00
1550+00
1555+00
1560+00
1565+00
1570+00
1575+00
1580+00
1585+00
1590+00
PI 15
27+57
PI 1547+88
P I
P I
PI 1533+20
2 2
4 2
300 0 300 600
SCALE IN FEET
295 ACRES
WANDO CELL
CENTERLINE STA. 115+00
DREDGE PIPE RAMP
CENTERLINE STA. 1+80
DREDGE PIPE RAMP
E 2328000
START STATION
PERIMETER DIKE
START STATION
CROSS DIKE
2333405.21, 364835.47XY=
2335712.22, 362685.81XY=
C-05
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E 2329000 E 2330000 E 2331000 E 2332000 E 2333000 E 2334000 E 2335000 E 2336000 E 2337000 E 2338000
E 2329000 E 2330000 E 2331000 E 2332000 E 2333000 E 2334000 E 2335000 E 2336000 E 2337000 E 2338000
MATCHLINE
ACCEPTANCE SECTION 7
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STA. 29+85
CENTERLINE
4 X 8 SPILLWAY
STA. 43+29
CENTERLINE
4 X 8 SPILLWAY
STA. 58+88
CENTERLINE
4 x 8 SPILLWAY
STA. 86+47
CENTERLINE
4 X 4 SPILLWAY
STA. 9+87
CENTERLINE
4 X 4 SPILLWAY
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ACCEPTANCE SECTION 6
SHEET C-02, C-03, C-04 & C-07
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(N.T.S.)
DISCHARGE PIPE
DIRT RAMP
TOP OF DIKE
TOP OF DIKE
PIPE CROSSING DETAILS
TO PROVIDE VEHICLE ACCESS AROUND TOP OF DIKE
AND ON ALL ROADS AT ALL TIMES
NOTE: DREDGE PIPELINE TO BE BURIED
DISCHARGE PIPE
IN TRENCH
OR RAMPED OVER IN ACCORDANCE WITH THIS DETAIL
+5
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25+00
60+00
65+00
70+00
75+00
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CONTRACTORS/SUBCONTRACTORS.
UNDER A SEPARATE CONTRACT. CONTRACTOR SHALL COORDINATE IN THE FIELD WITH ALL OTHER
11. THERE MAY BE CONCURRENT CONSTRUCTION ACTIVITES IN DANIEL ISLAND - MIDDLE CELL PLACEMENT AREA, CONDITIONS.
10. INTERIOR TOPOGRAPHY IS EXISTING PRIOR TO DIKING EFFORT, AND IS NOT REPRESENTATIVE OF POST-DIKING
FEET. ESTIMATED COMPLETION DATE AND READY TO RECEIVE DREDGED MATERIAL: AUGUST 2020
9. PLACEMENT AREA IS UNDER CONSTRUCTION TO RAISE THE PERIMETER CONTAINMENT DIKE AND CROSS DIKE TO 32
(NSRS2007).
8. ALL HORIZONTAL COORDINATES ARE BASED ON THE SOUTH CAROLINA STATE PLANE COORDINATE SYSTEM, NAD83
CONDITIONS ONLY. DATE OF CONDITION LiDAR SURVEY: APRIL 2020
7. ALL ELEVATIONS ARE NAVD88 INTERNATIONAL FEET. THIS DRAWING IS TO BE USED FOR GENERAL SITE
CROSSINGS AND FOR ANY REQUIRED REPAIRS TO TOP OF DIKE.
6. THE CONTRACTING OFFICER'S REPRESENTATIVE SHALL DESIGNATE BORROW SOURCE FOR FILL MATERIAL FOR PIPE
DIKE OR ROADS.
CROSSINGS OVER DREDGE PIPE IN ACCORDANCE WITH THE PIPE CROSSING DETAILS WHEREVER PIPE CROSSES THE
THIS CONTRACT. ONLY RUBBER-TIRED VEHICLES SHALL BE USED FOR THIS PURPOSE. PROVIDE VEHICLE
5. TRACKED EQUIPMENT SHALL NOT BE USED ON THE TOP OF DIKE FOR TRANSPORTATION OF PERSONNEL DURING
NOTICE TO PROCEED AND DEMOBILIZATION, UNLESS OTHERWISE DIRECTED BY THE CONTRACTING OFFICER.
DRUMS, MISC. STEEL, ETC. LEFT ON THE PLACEMENT AREA AND ADJACENT MARSHES BETWEEN THE TIME OF
4. THE CONTRACTOR SHALL REMOVE FROM THE PLACEMENT AREA THEIR DREDGE PIPE, PONTOONS, DUMP SHEDS, FUEL
PREVENT LEAKAGE.
TO PROPER LENGTH TO FIT SPILLWAYS (APPROX. 4') TO PREVENT BINDING IN SPILLWAY CHANNELS AND TO
3. ALL STOPLOGS SHALL BE 3" X 6" TONGUE AND GROOVE LUMBER (SEE SPEC.). CONTRACTOR SHALL CUT STOPLOGS
SLOPES OF DIKE.
RUTTING, DAMAGE OR RESTORATIVE OPERATIONS. RESTORATION SHALL INCLUDE GRASSING OF TOP AND SIDE
ANY RESULTANT LOSS OF FREEBOARD ATTRIBUTABLE TO HIS OPERATIONS REGARDLESS OF WHETHER DUE TO
DIKES, RAMPS, ROADS, ETC. IN ACCORDANCE WITH THE ABOVE REQUIREMENTS, HE SHALL BE RESPONSIBLE FOR
IS REQUIRED TO GRADE OR BLADE THE TOPS OF THE CROWNED OR SLOPED TO DRAIN. IF THE CONTRACTOR
PUMPING INTO THIS DISPOSAL AREA. TOPS OF DIKES, RAMPS, AND ROADS SHALL REMAIN GRADED SMOOTH AND
DURATION OF DREDGING AND SHALL BE RESTORED TO ORIGINAL OR BETTER CONDITION AT COMPLETION OF
2. ALL DIKES, RAMPS, ROADS, ETC. SHALL BE MAINTAINED IN ORIGINAL OR BETTER CONDITION THROUGHOUT THE
DEFICIENCIES FOUND.
PRIOR TO THE START OF DREDING. THE CONTRACTOR SHALL NOTIFY THE CONTRACTING OFFICER OF
1. ALL DIKES AND SPILLWAYS SHOWN ON DRAWING ARE EXISTING AND SHALL BE INSPECTED BY THE CONTRACTOR
NOTES:
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POINT
ACCESS
LEGEND
DIKE CENTERLINE
POINT
ACCESS
PIPELINE
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