John Therriault

Illinois Pollution Control Board

James R. Thompson Center

100 W. Randolph

Suite 11-500

Chicago, Illinois 60601

Subject: IPCB Docket R08-9

To the members of the Illinois Pollution Control Board:

I will be in Portland, Oregon for the June 16 hearing on the Chicago Area waterways use

classifications and water quality standards.

I would like to go on record to request that the Illinois Pollution Control Board delay any

decisions about disinfection and water quality standards until the results of the

Metropolitan Water Reclamation District study about recreational user contact with the

waters of the system is completed.

I understand that the costs of disinfection are high to taxpayers, and I want to make sure,

in these uncertain economic times, that we are not making a tax-paying body raise money

for unnecessary projects. If this scientifically-designed study shows a negative impact on

boaters, then I believe the MWRD will go ahead on its own, concurring with what will be

a ruling from IPCB that will be based on solid science.

Sincerely,

Libby Hill

2715 Woodland Rd.

Evanston, Il 60201

847-475-2096

libbyhill@comcast.net

R2008-009, June 4, 2008 --- PC #42