He’s the only lead tester in this contaminated neighborhood. He graduates next month.

He’s the only lead tester in this contaminated neighborhood. He graduates next month.

Kim Booker never thought much about lead during her roughly 27 years living in Trenton, New Jersey. Born and raised in the once-industrial powerhouse, she first heard about the heavy metal at community meetings organized by the East Trenton Collaborative, a local nonprofit that works on environmental health and safety issues. There, she learned that the prevalence of lead-laden pipes and paint, a legacy of the city’s industrial past, could have …