Lead Soils in Public Parks 2 (IMAGE) Duke University Caption Dan Richter, a professor of soils at Duke University’s Nicholas School of the Environment, samples the edges of a creek bed on the site of a former municipal waste incinerator in Durham, NC. Credit Dan Richter, Duke University Usage Restrictions none License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.