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COWLITZ FALLS NORTH SHORE COLLECTOR REQUEST FOR QUALIFICATIONS PRE-PROPOSAL MEETING DESIGN REVIEW OCTOBER 9, 2014 Slide 1 October 9, 2014 BY KIRK KESSLER,

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Presentation on theme: "COWLITZ FALLS NORTH SHORE COLLECTOR REQUEST FOR QUALIFICATIONS PRE-PROPOSAL MEETING DESIGN REVIEW OCTOBER 9, 2014 Slide 1 October 9, 2014 BY KIRK KESSLER,"— Presentation transcript:

1 COWLITZ FALLS NORTH SHORE COLLECTOR REQUEST FOR QUALIFICATIONS PRE-PROPOSAL MEETING DESIGN REVIEW OCTOBER 9, 2014 Slide 1 October 9, 2014 BY KIRK KESSLER, P.E.

2 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

3 COWLITZ PROJECT OVERVIEW Cowlitz River Slide 3 October 9, 2014 Cowlitz River Basin

4 LAKE SCANEWA Slide 4 October 9, 2014 Cispus River Cowlitz Falls Dam Cowlitz River

5 COWLITZ FALLS NORTH SHORE COLLECTOR October 9, 2014 Slide 5 Upstream Face of Dam Pumpback Discharge Structure Primary & Secondary Screens Existing CFFF Flume Bypass Channel Entrance thru Dam Tailrace Diffuser 500cfs Pumps (Expandable to 750cfs) Pumpback Pipe

6 COWLITZ FALLS NORTH SHORE COLLECTOR October 9, 2014 Slide 6 Pumpback Discharge Structure Collector Location

7 COWLITZ FALLS NORTH SHORE COLLECTOR October 9, 2014 Slide 7

8 COWLITZ FALLS NORTH SHORE COLLECTOR October 9, 2014 Slide 8

9 COWLITZ FALLS NORTH SHORE COLLECTOR October 9, 2014 Slide 9

10 COWLITZ FALLS NORTH SHORE COLLECTOR October 9, 2014 Slide 10

11 COWLITZ FALLS NORTH SHORE COLLECTOR Collector Entrance October 9, 2014 Slide 11

12 CONSTRUCTION SCHEDULE Advertise for Bid …………….........................….….....December 2014 Open Bids……………………….…………………….…..February 2015 Commence Construction……………….…………..…..March 2015 Complete Construction ……………………....….….December 2016 October 9, 2014 Slide 12

13 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 1 st thru December 31 st 2015 September 1 st thru December 31 st 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

14 QUESTIONS? October 9, 2014 Slide 14

15 COWLITZ FALLS NORTH SHORE COLLECTOR October 9, 2014 Slide 15

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