October 9 , 2014
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Transcript of October 9 , 2014
COWLITZ FALLS NORTH SHORE COLLECTORREQUEST FOR QUALIFICATIONS
PRE-PROPOSAL MEETING DESIGN REVIEW
OCTOBER 9, 2014
Slide 1 October 9, 2014
BY KIRK KESSLER, P.E.
AGENDA
Tacoma Power’s Cowlitz Project Overview
Cowlitz Falls North Shore Collector (CFNSC) Design Review
Construction Schedule
In-Water Work & Reservoir Operation Constraints
Slide 2 October 9, 2014
COWLITZ PROJECT OVERVIEW
Cowlitz River
Slide 3 October 9, 2014
Cowlitz River Basin
LAKE SCANEWA
Slide 4 October 9, 2014
Cispus River
Cowlitz Falls Dam
Cowlitz River
COWLITZ FALLS NORTH SHORE COLLECTOR
October 9, 2014 Slide 5
Upstream Face of Dam
Pumpback Discharge Structure
Primary & Secondary Screens
Existing CFFFFlume
Bypass Channel
Entrance thru DamTailrace Diffuser
500cfs Pumps (Expandable to 750cfs)
Pumpback Pipe
COWLITZ FALLS NORTH SHORE COLLECTOR
October 9, 2014 Slide 6
Pumpback Discharge Structure
Collector Location
COWLITZ FALLS NORTH SHORE COLLECTOR
October 9, 2014 Slide 7
COWLITZ FALLS NORTH SHORE COLLECTOR
October 9, 2014 Slide 8
COWLITZ FALLS NORTH SHORE COLLECTOR
October 9, 2014 Slide 9
COWLITZ FALLS NORTH SHORE COLLECTOR
October 9, 2014 Slide 10
COWLITZ FALLS NORTH SHORE COLLECTOR
Collector Entrance
October 9, 2014 Slide 11
CONSTRUCTION SCHEDULE
Advertise for Bid …………….........................….….....December 2014
Open Bids……………………….…………………….…..February 2015
Commence Construction……………….…………..…..March 2015
Complete Construction ……………………....….….December 2016
October 9, 2014 Slide 12
IN-WATER WORK & RESERVOIR OPERATION CONSTRAINTS
Typical Reservoir Ops:• Held between elev. 860 – 862 (unless under flood
condition)
Construction Constraints:• Work conducted below OHWM (elev. 862) must be
conducted during two approved work windows• September 1st thru December 31st 2015
• September 1st thru December 31st 2016
• Reservoir drawdowns (below elev. 860) must be conducted during work windows
• Rules regarding the scheduling, duration, and penalties for reservoir adjustments will be detailed in the general bid specification
October 9, 2014 Slide 13
QUESTIONS?
October 9, 2014 Slide 14
COWLITZ FALLS NORTH SHORE COLLECTOR
October 9, 2014 Slide 15