This publication, Testing Soil Mixed with Waste or Recycled Materials, contains papers presented at the symposium of the same name held in New Orleans, Louisiana on 16-17 January 1997. The sponsor of the event was ASTM Committee D-18 on Soil and Rock. The symposium chairman was Mark A. Wasemiller, IT Hanford Company. The symposium co-chairman was Keith Hoddinott, U.S. Army Center for Health Promotion and Preventive Medicine. They served as editors of this publication.