HomeMy WebLinkAboutI - HBC AEA Project ScheduleHUMPBACK CREEK PROJECT – CONSTRUCTION ACTIVITY SCHEDULE BY TASK
AND ANTICIPATED STREAMFLOW RATE DURING TASK PERFORMANCE 09/27/08
TASK
DESCRIPTION
STREAM
FLOW
START
DATE
FINISH DATE
A.
Procurement (CEC) - of long lead
equipment and steel embedments
N/A
12/2/08
5/27/09
B.
Procurement (GCC) - of short lead
time items and prepare concrete
placement plans and lift drawings
N/A
1/5/09
8/27/09
Task 1 -
Mobilization on Site - set up camp
and store materials at staging areas
near powerhouse.
>10 CFS
1/12/09
1/30/09
Task 2 -
Operate Construction Camp - for
duration of construction project
N/A
2/1/09
9/6/09
Task 3 -
Site Access - to construction sites
from Eyak Road
>10 CFS
1/29/09
2/12/09
Task 4 -
Left Abutment Stabilization - rock
removal and stabilization
>10 CFS
2/12/09
3/1/09
Task 5 -
Downstream Tunnel Portal -
excavate tunnel portal
>10 CFS
2/8/09
3/4/09
Task 6 -
Tunnel - excavate rock from tunnel
and line tunnel with shotcrete
>10 CFS TO
50/60 CFS
3/4/09
6/7/09
Task 7 -
Cofferdams and Flow Diversion -
install to control stream at dam
construction site.
>10 CFS
3/26/09
4/26/09
Task 8 -
Intake Excavation excavate tunnel
portal at intake and for intake
structure
>10 CFS TO
50/60 CFS
3/2/09
5/21/09
Task 9 -
Dam Excavation - remove rock
from bottom of dam site
50/60 CFS
5/21/09
6/16/09
Task 10 -
Intake/Diversion Foundation
Grouting - drill and grout cutoffs for
dam stabiity
50/60 CFS
5/17/09
6/26/09
Task 11 -
Intake Structure – Construct
concrete intake structure
50/60 CFS
5/17/09
6/30/09
Task 12 -
Diversion Dam – Construct
concrete intake/diversion structure
50/60 CFS
6/16/09
7/28/09
Task 13 -
Intake/Diversion Mechanical
Equipment & Misc. Steel -
installation
50/60 CFS
6/9/09
7/24/09
Task 14 -
Penstock – Install new penstock and
connect to existing penstock
50/60 CFS
6/9/09
7/26/09
Task 15 -
Controls, Power, Scada – run from
Dam to Power house
50/60 CFS
7/27/09
8/20/09
Task 16 -
Test, Commissioning and Turnover
N/A 8/20/09 8/30/09
Task 17 -
Demobilzation – of contractor
N/A
8/31/09
9/9/09
HUMPBACK CREEK FLOWS AND DURATIONS
Description of Streamflow Duration Start Finish
Streamflow under 10 CFS
70days
1/9/09
4/16/09
Streamflow 50 to 60 CFS 87days 4/17/09 8/17/09
Streamflow 200 CFS
30days
8/20/09
9/30/09