(m) The term "reasonable cause" means a belief based on facts and inferences based primarily upon, but not limited to:
- (1) Observable phenomena, such as direct observation of use, possession or distribution of alcohol or a drug of abuse, or of the physical symptoms of being under the influence of alcohol or a drug of abuse, such as, but not limited to, slurred speech, dilated pupils, odor of an alcoholic beverage or a drug of abuse, changes in affect or dynamic mood swings;
- (2) a pattern of abnormal conduct, erratic or aberrant behavior or deteriorating work performance such as frequent absenteeism, excessive tardiness or recurrent accidents, that appears to be related to the use of alcohol or a drug of abuse and does not appear to be attributable to other factors;
- (3) the identification of an employee as the focus of a criminal investigation into unauthorized possession, use or trafficking of a drug of abuse;
- (4) a report of use of alcohol or a drug of abuse provided by a reliable and credible source; and (5) repeated or flagrant violations of the safety or work rules of the employee's employer, that are determined by the employee's supervisor to pose a substantial risk of physical injury or property damage and that appears to be related to the use of alcohol or a drug of abuse and that does not appear attributable to other factors.