the three states, including underground tanks that leaked toxic chemicals into soil, streams and wells.

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Indiana alone has spent at least $21 million on the cleanup thus far, or an average of about $500,000 per site, according to an analysis of records by The Associated Press. And the work is nowhere near complete.

The federal government, meanwhile, plans to clean up a plume of cancer-causing solvent discovered beneath a former Kiel Bros. station that threatens drinking water near the Pence family’s hometown.

To assess the pollution costs, the AP reviewed thousands of pages of court documents, tax statements, business filings and federal financial disclosures, as well as federal and state environmental records for Indiana, Kentucky and Illinois. The total financial impact isn’t clear because Indiana officials have yet to release costreliable spending data for the company. That was out of more than 230 companies seeking cleanup money that year, including major gas station chains with a substantially larger presence in the state.

Founded as an oil distributor by businessman Carl Kiel in 1960, the company expanded into the gas station business. Pence’s father, Edward, joined in the early years and, by the mid-1970s, rose to corporate vice president.

Mike Pence says he worked for the business — which mostly operated under the name Tobacco Road — starting at age 14. But it was his brother who took over after Edward Pence’s 1988 death and eventually became president.

By the early 2000s, Kiel Bros. was swimming in debt as industry consolidation and low gas prices stretched profit margins to the brink. The