A healthcare facility may accumulate a non-creditable hazardous waste pharmaceutical on site for 1 year or less without having to either: Obtain a CHS permit issued under COMAR 26.13.07 that authorizes storage of the pharmaceutical; or Qualify for interim status, as defined in COMAR 26.13.01.03B, with respect to the waste management unit in which the pharmaceutical is being managed. A healthcare facility that accumulates a non-creditable hazardous waste pharmaceutical on site shall demonstrate the length of time that the non-creditable hazardous waste pharmaceutical has been accumulating, starting from the date that the pharmaceutical first became a waste, as specified in §C of this regulation. A healthcare facility shall demonstrate the length of time that a non-creditable hazardous waste pharmaceutical has been accumulating by one or more of the following methods: Marking or labeling the container of the non-creditable hazardous waste pharmaceutical with the date that the non-creditable hazardous waste pharmaceutical became a waste; Maintaining an inventory system that identifies the date that the non-creditable hazardous waste pharmaceutical item being accumulated became a waste; or Placing the non-creditable hazardous waste pharmaceutical in a specific area in which non-creditable hazardous waste pharmaceuticals are accumulated, identifying the earliest date that any of the non-creditable hazardous waste pharmaceuticals in the area became a waste, and having that information readily available during a compliance inspection, by, for example, marking or labeling the accumulation area with the accumulation start-date, or by entering the current earliest accumulation start-date in a log book or facility operating record.