One of growing municipalities bordering Phoenix is embarking on a substantial environmental restoration project — removing a large amount of old landfill debris buried beneath ground surface running along and under a roadway. The cleanup effort is part of a larger street improvement project along a stretch of one of the city’s major thoroughfares. Fulton Schools Professor Edward Kavazanjian, director of a National Science Foundation geotechnical engineering research center at ASU, explains how the debris problem likely developed and persisted, and how such land can be restored and made viable for urban redevelopment.