If an offender is charged with a criminal offense and the court has reason to believe that drug or alcohol usage by the offender, or the offender’s mental illness, was a factor leading to the offender's criminal behavior, the court may accept, prior to the entry of a guilty plea, the offender's request for intervention in lieu of conviction. If the court grants an offender's request for intervention in lieu of conviction. The offender will he placed under the supervision of the Probation Department. The court establishes an intervention plan for the offender for at least one year the offender must abstain from the use of illegal drugs and alcohol, participate in treatment and recovery support services and submit to regular random testing for drug and alcohol use. Upon successful completion, the court will dismiss the charge against the offender.