310 CMR, § 2.09
Any interested person or his attorney may at any time request an advisory ruling with respect to the applicability to any person, property or factual situation of any statute or regulation enforced or administered by the agency. The request shall be addressed to the agency and sent to the clerk or secretary by mail or delivered in person during normal business hours. All requests shall be signed by the person making it or his attorney, contain his address or the address of his attorney, and state clearly and concisely the substance or nature of the request. The request may be accompanied by any supporting data, views or arguments. Upon receipt of the request the agency shall consider it at a meeting and shall within ten days thereafter notify the petitioner that the request is denied or that the agency will render an advisory ruling. The agency may at any time rescind a decision to render an advisory ruling. If an advisory ruling is rendered, a copy of the ruling shall be sent to the person requesting it or his attorney.
310 CMR, § 2.09