STATE OF WASHINGTON DEPARTMENT OF ECOLOGY

The State of Washington Department of Ecology (Ecology) has received application to construct a new air pollution source. Vantage Data Centers Management Company, LLC, 2625 Walsh Avenue, Santa Clara, CA 95051, has proposed to build Vantage Data Centers located at the northwest corner of the intersection of Road 11 NW and Road O NW, Quincy in Grant County.

NOTICE TO CONSTRUCT A NEW AIR POLLUTION SOURCE,

& SECOND TIER PETITION APPROVAL RECOMMENDATION

The State of Washington Department of Ecology (Ecology) has received application to construct a

new air pollution source. Vantage Data Centers Management Company, LLC, 2625 Walsh

Avenue, Santa Clara, CA 95051, has proposed to build Vantage Data Centers located at the

northwest corner of the intersection of Road 11 NW and Road O NW, Quincy in Grant County.

The mailing address for the Vantage Data Centers in Quincy will be 2101 M Street, Quincy, WA

98848.

Vantage Data Centers will contain four main data center buildings once it is fully constructed, and

will install and operate up to 17 diesel engines that will power 3.0 megawatt electrical generators

for a total capacity of 51 megawatts of emergency backup electrical power. The diesel engines

generate criteria and toxic air contaminants which have been fully evaluated, and found to be

significantly below major source thresholds. The primary emissions of concern are nitrogen oxides

and particulate matter, including diesel engine exhaust particulate (DEEP). DEEP emissions were

reviewed under a Second Tier Health Impact Assessment to evaluate health risks posed by the

project. After review of the completed Notice of Construction application and other information

on file with the agency, Ecology has decided that this project proposal will conform to all

requirements as specified in Chapter 173-400 WAC. After review of the Second Tier Health

Impact Assessment, Ecology concluded that impacts to the community due to the Vantage Data

Centers will meet the protective requirements contained in Chapter 173-460 WAC.

Copies of the Notice of Construction Preliminary Determination, the Second Tier Petition

Recommendation, application information, and other application documents are available for

public review at Department of Ecology, Eastern Regional Office, 4601 N. Monroe, Spokane, WA

99205-1295, and at the City of Quincy, 104 B Street SW, Quincy, WA 98848. A public hearing

on this project was held on September 6, 2012 at the Quincy City Hall. This new public comment

period is due to the changes Vantage made to their NOC application on October 19 and November

28, 2012. The public is invited to comment on this project proposal. Comments should be

submitted to Beth Mort, and will be accepted for a period of thirty days after this notice has been

published in the Columbia Basin Herald. For additional information please contact Beth Mort at

Ecology’s Spokane Office, 4601 N. Monroe, Spokane, WA 99205-1295, or email

beth.mort@ecy.wa.gov, or 509 329-3502.

This notice supersedes the notice published on July 30, 2012.

#12032/2780681

Pub.: December 10, 2012