The Chemical Dependency Disposition Alternative (CDDA) was created by the 1997 Washington State Legislature as a sentencing option for juvenile offenders. The goal was to reduce recidivism by providing treatment for chemically dependent or substance abusing youth. This report assesses the feasibility of conducting a retrospective outcome evaluation to compare the recidivism rates of a CDDA group to similar youth who did not receive CDDA. We investigated two potential comparison groups: substance abusing youth adjudicated before CDDA started, and substance abusing youth receiving no treatment after CDDA started. The Institute found that an appropriate comparison group could not be identified. Thus, it was not possible to evaluate the impact of CDDA on recidivism.