MW101-MW501-MW502_AMDT 0002.pdf
PDF 2 MB Posted
- Attached to
- Dexter Adult Fish Facility Upgrades
- Solicitation number
- W9127N23R0005
About this file
This package includes plans and specifications for the Dexter Adult Fish Facility Upgrades project. Major work includes improving, replacing, and adding features to the facility to meet National Marine Fisheries Service criteria. The estimated construction cost is between $25-100 million. The period of performance is March 2023 through November 2026. The North American Industry Classification code is 237990 for other heavy civil engineering construction, with a $39.5 million small business size standard. The solicitation was released by the US Army Corps of Engineers Portland District for an unrestricted, full and open competition. The HUBZone price evaluation preference will apply as required.
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US Army Corps of Engineers
PORTLAND DISTRICT
SHEET
IDENTIFICATION
MW101
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SCALE:
INTERIM WATER SUPPLY CONCEPT - PLAN VIEW
1:500
INTERIM CONNECTION
MADE AT FACILITY HEADER
35 CFS DEMAND
6" TEE TO SUPPLY
2 CFS DEMAND
TO EXISTING ADULT
FACILITY TO BE VERIFIED
16" TEE TO SUPPLY POND DIFFUSER
10 CFS DEMAND
EXISTING
CONCRETE
RACEWAYS
ASPHALT POND
UNIT DISCHARGE AREA AND
FISH LADDER ENTRANCE
GENERAL NOTES:
1. DESIGN A GRAVITY FED INTERIM WATER SUPPLY INTERCEPTING THE
CURRENT WATER SUPPLY PIPE AT THE POWERHOUSE.
2. PROVIDE FLOW VERIFICATION VIA A FLOW METER AT THE THREE SUPPLY
POINT CONNECTIONS LISTED IN THE PLAN VIEW ON THIS SHEET.
3. OTHER PIPE SYSTEMS SUITABLE FOR SURFACE INSTALLATION AS PROPOSED
BY CONTRACTOR WILL BE ALLOWED IF POTABLE WATER COMPLIANT AND
ARE WITHOUT INTERNAL ZINC COATING SYSTEM.
4. DEMOLISH EXISTING MECHANICAL COUPLING AT DAM WALL AND INSTALL
NEW COUPLING FOR INTERIM WATER SUPPLY. THIS COUPLING MAY BE
RE-USED FOR THE NEW FACILITY WATER SUPPLY IF COMPATIBLE.
30" PIPE SURFACE
PLACED CONTRACTOR
CAN PROPOSE ALTERNATE
ROUTING MUST ALLOW
POWERHOUSE ACCESS
IDEALIZED TEMP.
SUPPORT STRUCTURE
EXISTING WATER SUPPLY PIPE
DEMOLISH AS NEEDED TO
ESTABLISH INTERIM CONNECTION
EXTENTS OF OPEN EXCAVATION
AFTER PIPE PRESSURE TESTING
AND FLOW VERIFICATION
PIT IS FILLED TO ALLOW
POWERHOUSE ACCESS
CONNECT TO
EXISTING FRESH
WATER SUPPLY PIPE
PROVIDE RATED SERVICE
WATER CONNECTION
EVALUATE EXISTING 48",
1/2" WALL SPOOL FOR
WATER SUPPLY SERVICE
INTERIM WATER SUPPLY CONCEPT - ISO VIEW
NTS
PIPE CONTINUES SURFACE INSTALLED TO FACILITY
SEE INTERIM PUMP PLAN FOR CONNECTIONS
EXISTING DUCT BACK
LOCATION (APPROX.)
SECURE AND PULL BACK
CONDUCTORS AS IS
PRACTICABLE
DEMO DUCT BANK AND
REROUTE CONDUCTORS
TO REESTABLISH EDG
CONNECTION
SHORE EXCAVATED PIT AS
NEEDED TO HAVE SAFE
ACCESS
PARTIAL DUCT BANK
REMOVAL IS REQUIRED,
DURING ENTRANCE AREA
CONSTRUCTION,
A NEW DUCT BANK MUST
BE CONSTRUCTED
RED HATCH INDICATES
IDEALIZED EXISTING
SURFACE EXCAVATION
SHOULD BE MINIMIZED AS
MUCH AS IS PRACTICABLE
SURFACE PLACED SUPPLY PIPE
POWERHOUSE
MW501
MW501
MW501
EXISTING WATER
SUPPLY PIPE
CL. EL. 643.82'
90 DEG ELBOW
90 DEG ELBOW
CL. EL. 664.71'
STILLING BASIN
'-5
69'-1"100'-0"
'-0
263'-1" 77'-8"194'-1"
'-2
9'-0"
'-8
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MW501
MW501
MW501
A
CL. EL. 643.82'
CL. EL. 664.71'
10'-0"
TYP
83'-4"
'-6
"CL. EL.
657.33'
CL. EL.
660.07'
DETAIL
SCALE:
- 1/8"=1'-0"
DETAIL
- 1/8"=1'-0"
SECTION
A
- 1:500
ITEMS OMITTED FOR CLARITY
5' 0 5' 10'
SCALE: 1
8"= 1'-0"
EARTHEN PIPE
SUPPORT BERM
EARTHEN PIPE
SUPPORT BERM
CL. EL. 656.85'
CL. EL. 655.88'
CL. EL. 665.79'
CL. EL. 664.76'
PIPE SUPPORTS
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US Army Corps of Engineers
PORTLAND DISTRICT
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IDENTIFICATION
MW501
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DETAIL
SCALE:
MW101 3/16"=1'-0"
MW101 1/8"=1'-0"
MW101 1/8"=1'-0"
'-0
EXISTING 30" SUPPLY PIPE
TRANSITIONS ABOVE GRADE
TO GATE VALVE
EXISTING KNIFE GATE VALVE WITH OPERATOR
FUNCTIONALITY MUST BE MAINTAINED
CONCRETE POOL WALL
EXISTING ASPHALT DIFFUSER SUPPLY
EXCAVATE TO INTERCEPT VALVE CONNECTION
VALVE MAY BE REUSED DURING INTERIM WATER SUPPLY OPERATION
EXISTING BURIED 30" WATER SUPPLY PIPE
EXISTING FABRICATED PVC HEADER
TO SUPPLY AERATED WATER
EXISTING PVC HEADER ISOLATION VALVE
4"
TYP. EACH SUPPLY PIPE
SUPPLY
TO BE VERIFIED
SUPPLY
TO BE VERIFIED
BURIED 30" FACILITY WATER SUPPLY
EXISTING FISH LADDER
FLOW
FLOW TO CONCRETE RACEWAYS
FLOW TO OTHER AREAS
5' 0 5' 10'
SCALE: 1
8"= 1'-0" 12"0 5' 10'
SCALE: 3
16"= 1'-0"
1'-4"
2'-6"
CONCRETE MANHOLE
DEMO AS NEEDED TO FACILITATE
INTERIM WATER SUPPLY CONNECTION INSTALL
VALVE OPERATOR
GENERAL NOTES:
1. GRAVITY DESIGN, INTERCEPTING CURRENT WATER SUPPLY PIPE AT THE POWERHOUSE IS
CONTRACTOR DESIGNED.
3. FLOW VERIFICATION VIA FLOW METER INSTALLATION WILL BE MANDATED AT SUPPLY
POINTS. METHOD TO ALARM WHEN FLOWS ARE INTERRUPTED IS REQUIRED.
4. OTHER PIPE SYSTEMS SUITABLE FOR SURFACE INSTALLATION AS PROPOSED BY
CONTRACTOR WILL BE ALLOWED IF POTABLE WATER COMPLIANT AND ARE WITHOUT
INTERNAL ZINC COATING SYSTEM.
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PROPOSED CONNECTION
TO EXISTING BLIND FLANGE.
CONTRACTOR TO VERIFY
CL. EL. 660.07'
PROPOSED
CONNECTION INTO
THE RACEWAY.
CONTRACTOR
TO VERIFY
CL. EL. 658.82'
PROPOSED CONNECTION TO
EXISTING BLIND FLANGE.
CONTRACTOR
TO VERIFY
CL. EL. 658.32'
DETAIL
SCALE:
MW101 3/16" = 1'-0"
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US Army Corps of Engineers
PORTLAND DISTRICT
SHEET
IDENTIFICATION
MW502
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2'-0"
EXISTING SPOOL
EXISTING WATER SUPPLY PIPE
PROPOSED INTERIM WATER SUPPLY FEATURE
INTERIM WATER SUPPLY PIPE
CONTRACTOR TO PROPOSE
ALTERNATE ROUTE
TO FACILITATE CONSTRUCTION
47 CFS
PIPE SPOOL AS-BUILT CONDITION INDICATES 1/2" PIPE WALL AT
POWERHOUSE WALL PENETRATION
MECHANICAL COUPLER IS INDICATED ON AS-BUILT DRAWINGS;
DEMO COUPLER
ASSESS PIPE CONNECTION FOR NEW MECHANICAL COUPLER
AS REQUIRED, REPAIR PIPE ENSURING NEW MECHANICAL
COUPLER CAN BE INSTALLED PER MFR. RECOMMENDATIONS.
FIELD PREPARE THE PIPE FOR AN EPOXY BASED COATING
SYSTEM AND PVC WRAP.
APPLY COATING SYSTEM AND WRAP PRIOR TO TEMPORARY BURIAL.
STANDARD SCHEDULE PIPE IS SPLICED HERE,
CONTINUES TO INTAKE TRANSITION
APPROXIMATE ROCK LAYER
INDICATED BY HATCH.
SEE CIVIL SHEETS
FACILITY WATER
INTAKE
POWERHOUSE FACE
PARKING LOT DECK
SCALE:
INTERIM WATER SUPPLY AREA - PLAN VIEW
1/16"=1'-0"
SECTION
SCALE:
A
- 3/32"=1'-0"
A
GENERAL NOTES:
1. SEE MW101 GENERAL NOTES.
2. INTERIM WATER SUPPLY FEATURES MUST BE TESTED AND LEAK FREE.
3. COMPLETE INTERIM WATER SUPPLY SYSTEM MUST BE PROVIDED BY CONTRACTOR.
4. SYSTEM MUST BE COMPLETELY REMOVED UPON CONSTRUCTION AND COMMISSIONING OF NEW BURIED SUPPLY
PIPE.
5. PIPE ROUTING CHANGES MUST BE COORDINATED WITH CONTRACTING OFFICER. COORDINATED DISRUPTIONS WHILE IN SERVICE MUST BE 30 MIN. OR LESS, UNLESS OCCURRING DURING FACILITY SHUTDOWN PERIOD.
6. CONTRACTOR IS RESPONSIBLE FOR MAINTAINING WATER SUPPLY, ENSURING THERE IS NO DISRUPTION IN
SERVICE GREATER THAN 30 MIN. SUBMIT PLAN FOR APPROVAL.
7. AFTER INSTALLATION AND PRESSURE TESTING, CONTRACTOR MUST BACKFILL PIT TO ENSURE VEHICLE ACCESS
IS ALLOWED. SUBSEQUENT ACCESS DISRUPTIONS MAY BE ALLOWED, COORDINATE WITH GQAR.
8. CONTRACTOR MUST PROVIDE METHOD TO ALARM FOR A SERVICE DISRUPTION OR PROVIDE 24 HOUR
OVER-WATCH PERSONNEL.
EXISTING BURIED
WATER SUPPLY PIPE
GENERATING UNIT DISCHARGE
STILLING BASIN
TAILWATER
BAFFLE BLOCK
GENERATING UNIT INTAKE
SUPPORT, CONTRACTOR PROVIDED
AS REQUIRED BY SELECTED ROUTE
12" 6" 0 1' 2'
SCALE: 34"= 1'-0"
5' 0 5' 10' 15'5' 0 5' 10' 15'
SCALE: 3
32"= 1'-0" 12"0 5' 10'
SCALE: 3
16"= 1'-0"
PROPOSED INTERIM PIPE ROUTING
BULKHEAD
SCROLL CASE FILL
4' -0
DEMO AS REQUIRED
EXISTING CONCRETE, DEMO AS NEEDED TO
ESTABLISH REASONABLE PIT BOUNDARIES
6" COMBINATION
AIR RELEASE
VACUUM VALVE
30" GATE VALVE
CONTRACTOR MUST PROVIDE SAFE ACCESS
UPON DEMOLISHING PIPE PROVISIONS FOR LIGHTING
MUST BE PROVIDED BY THE CONTRACTOR NOTIFY GQAR.
CONTINUOUS ACCESS MUST BE PROVIDED FOR 72 HOURS
AS COORDINATED WITH CONTRACTING OFFICER.
ACCESS IS REQUIRED TO ASSESS PIPE CONDITION. THIS MAY BE
PERFORMED BY THIRD PARTY OR GOVERNMENT PERSONNEL.
AFTER INSPECTION, UNLESS SERIOUS CONDITION
EXISTS, CONTRACTOR WILL PROCEED
WITH INTERIM WATER SUPPLY INSTALLATION.
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