BP has posted an interactive retail site list at http://www.bpresponse.com for consumers who suspect they purchased off-specification gasoline in Indiana, Chicagoland and the Milwaukee area during the past two weeks.  The list can be found by searching by address, city, state or zip code from the "Claims" tab at the top of the website homepage.  Of 8,600 claims BP says are currently being processed, the company says 64% are from Indiana residents, 28% from Illinois residents, 5% from residents of WIsconsin, and an additional 3% are believed to have travelled through the three-state region when the bad gas was in circulation.