PROVIDENCE, R.I. AP Rhode Island Attorney General Patrick Lynch announced Monday that cleanup of up to 600 housing units contaminated by lead paint is now going out to bid and said the work would target properties in poorer neighborhoods of the state and should be finished within three years.

The work is being funded by DuPont Co., which in 2005 agreed to pay for the cleanup and make millions of dollars in charitable contributions in exchange for being dismissed from a lawsuit against former lead paint companies.