BY KIRK KESSLER P E COWLITZ FALLS NORTH

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

AGENDA Ø Tacoma Power’s Cowlitz Project Overview Ø Cowlitz Falls North Shore Collector (CFNSC) Design Review Ø Construction Schedule Ø In-Water Work & Reservoir Operation Constraints October 9, 2014 Slide 2

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

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

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

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

COWLITZ FALLS NORTH SHORE COLLECTOR October 9, 2014 S lide 7

COWLITZ FALLS NORTH SHORE COLLECTOR October 9, 2014 S lide 8

COWLITZ FALLS NORTH SHORE COLLECTOR October 9, 2014 S lide 9

COWLITZ FALLS NORTH SHORE COLLECTOR October 9, 2014 S lide 10

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

CONSTRUCTION SCHEDULE Advertise for Bid ……………. . . …. …. . . December 2014 Open Bids……………. …. . February 2015 Commence Construction………………. . March 2015 Complete Construction October 9, 2014 …………. . …. …. December 2016 S lide 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 October 9, 2014 • 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 S lide 13

QUESTIONS? October 9, 2014 Slide

COWLITZ FALLS NORTH SHORE COLLECTOR October 9, 2014 S lide 15