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EPA Home > Region 5 > Air > Correspondence


December 27, 1999

Charles Lagges, Director
Cook County Department of Environmental Control
1500 Maybrook Drive
Maywood, Illinois 60153

Dear Mr. Lagges:

I would like to express my appreciation for all of the hard

work and effort that you and your staff have contributed toward

successfully implementing the PM2.5 monitoring network in

Illinois. Your staff and the staff of the Illinois Environmental

Protection Agency, in spite of the numerous problems with the

monitoring equipment, have demonstrated their overwhelming

expertise which has resulted in Illinois having the highest PM2.5

data completeness for a network of its size.

If there is anything that my staff and I can do to continue

to aid your efforts in the future, please do not hesitate to ask.

Sincerely yours,


Margaret M. Guerriero, Acting Director
Air and Radiation Division

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This Information Last Modified On: 09/18/2008 04:03 PM