This booklet sets forth a common framework within which providers of substance abuse services approved by the Maine Division of Driver Education Evaluation Programs (DEEP) can evaluate, treat, and certify the completion of treatment of persons convicted of operating under the influence. It presents criteria for classifying individuals according to their degree of progression in the disease of chemical addiction and recommends appropriate treatment requirements. It is noted that consistent use of this framework should result in a more uniform approach to DEEP evaluation, referral, and treatment process. First an overview of the guidelines and general considerations are presented. The salient characteristics/symptoms of different levels of users are discussed. Physical, psychological, and social characteristics/symptoms are presented for the levels of problem user, early stage, middle stage, late stage, and final stage. Characteristics of individuals in each of these stages and the rationale for treatment of each level is described. Definitions of terms are provided. (ABL)