QUARTERLY REPORTThe Denny Substation Project is Seattle City Light’s first

new substation investment in nearly 30 years. It will provide

improved reliability and electrical load density needed

Denny Substation

ProjectPowering Seattle through the 21st Century

ENVIRONMENTAL REVIEW - SUBSTATION DESIGN - DISTRIBUTION NETWORK DETAIL -ART - TIMELINE

Renderings courtesy of NBBJ

Images of Seattle City Light presenting the 60% design of the Denny Substation (SCL preferred alternative) to the Seattle Design Commission in April 2014.

2ND QUARTER | 2014 Denny Hotline:206.257.2142

INSIDE:

for the growing South Lake Union neighborhood. The project is complex and involves the design and

construction of a new substation, a transmission line to feed electricity to the substation and a network

distribution system.

This report summarizes the progress made on key project elements; what’s been accomplished during

the second quarter of 2014 and what’s ahead for the Denny Substation project. The activities covered

include progress made on the environmental review, a preliminary distribution network map, new art

installations, and Denny Substation social media highlights.

ENVIRONMENTAL REVIEW & DESIGNDuring the second quarter of 2014, Seattle City Light issued the Draft Environmental Impact Statement (EIS), provided a 30-day comment period on the EIS and held a public hearing to gather feedback from the public and agencies on the document, including environmental impacts and any concerns about the project. Seattle City Light is currently focused on developing the Final EIS, which will address the comments that were received.

As Seattle City Light continues to refine the public benefits proposal associated with Substation Alternative 3 (SA3) forpresentation to the Design Commission, the other substation alternatives continue to be considered.

SUBSTATION ALTERNATIVE 1

SUBSTATION ALTERNATIVE 2

SUBSTATION ALTERNATIVE 3

Design Milestone: Seattle City Light receiving approval from the Seattle Design Commission for the 60% design of the Denny Substation SA3 (SCL preferred alternative).

PROPOSED DISTRIBUTION NETWORK SYSTEMThe map to the left indicates where a new underground network power distribution system will be built in the South Lake Union and Denny Triangle area. The network will deliver reliable power to large scale users that are part of the fast growing area north of downtown. The design is nearing final

completion. Some existing customers will be converted to the new network service, and new customers will be connected to the network upon completion per request. This investment will ensure support for economic growth and the City of Seattle.

JANENE NAGY, OFFING

The Seattle Office of Arts & Culture unveiled the latest temporary art installation by artist Jenene Nagy, titled “offing”. This installation integrates an ocean wave of blue construction tarps running along the fence of Denny Way. This is the second of what will be a total of four installations, part of the ALL RISE program which aims to

evoke creativity and contemplation on the site proposed for the Denny Substation. More temporary additions are beginning to pop up, including artist Karl Burkheimer’s “In Situ,” an art sculpture that will eventually host dances and other performances. More to come soon, including new structural pieces and music!

SUBSTATION ART

KARL BURKHEIMER, IN SITU

5

DENNYSUBSTATION

8TH AVE

8TH AVE 9TH AVE

BOREN AVETERRY AVE

7TH AVE6TH AVE

5TH AVE

4TH AVE 9TH AVE S

BOREN AVE

8TH AVE S

7TH AVE S

6TH AVE S

PINE ST

PIKE ST

STEWART ST

STEWART ST

LENORA ST

LENORA ST

VIRGINIA STBLANCHARD ST

BELL ST

OLIVE WAY

MERCER ST

VALLEY ST VALLEY ST

ALOHA STALOHA ST

WARD ST

FAIRVIEW

AVE NLAKE UNION

MERCER ST

REPUBLICAN ST

HARRISON ST

DENNY WAY

THOMAS ST

JOHN ST

FAIRVIEW AVE N

THOMAS ST

WESTLAKE AVE

ROY STROY ST

WESTLAKE AVE N

WESTLAKE AVE N

9TH AVE N9TH AVE N

8TH AVE N

BROAD ST

DEXTER AVE N

Denny Network Distribution Map

TERRY AVE N

BOREN AVE N

YALE AVE N

MINOR AVE

YALE AVE

DENNY PARK

MINO

RAVE N

MELRO

SE AVE E

PONTIUS AVE N

CASCADEPLAYGROUND

CASCADEP-PATCH

HOWELL ST

Ramps to and from I-5

7THAVE

May change as design progresses

3RD AVE

Substation

Denny Network Phase 1SLUDenny Network Phase 2Denny Triangle

Throughout the 2014 summer season expect to see more surprises popping up at the proposed Denny Substation site at 1250 Denny Way. Featured entertainment will include temporary art exhibits, food trucks, music and dance. This temporary program is organized by ALL RISE and below are some art installations and performances that have been on the site so far:

DESTINATION: 1250 DENNY WAY

Images left to right: Arne Pihl, “This is not a gentle poem”; Rodrigo Valenzuela, “Flatlands”; Ben Hunter of Renegade Street Band

Denny Substation Project

WE’RE ON FACEBOOK, TWITTER AND INSTAGRAM!

VISIT OUR WEBSITE:

www.seattle.gov/light/dennysub

SEND US AN EMAIL:

SCL_dennysub@seattle.gov

CALL OUR HOTLINE:

(206) 257-2142

FOLLOW US ON FACEBOOK:

www.facebook.com/dennysubstationproject

FOLLOW US ON TWITTER:

@dennysubstation

FOLLOW US ON INSTAGRAM:

@dennysubstation

Join our growing social

community to stay connected

and be informed. We share

project information, substation

art and local events. Follow us on

Facebook, Instagram and Twitter

today to join the conversation.

LOOKING AHEADSEPA: Final EIS completed in

early 2015

DESIGN: Substation design

finalized after FEIS

CONSTRUCTION: Distribution

Network and substation

construction begins in mid-2015

Milestone

KEY:

2012 2013 2014 2015 2016

SEPA Process Public Scoping

Draft EIS Final EIS

Community Involvement

Denny Substation

Distribution Network

Distribution Network

www.seattle.gov/light/desnnysub

timeline

*Schedule is current as of July 2014

Denny SubstationDesign

Construction

2017

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