Fentanyl Safety for First Responders
Government of British Columbia, Justice Institute of British Columbia, Canadian Association of Chiefs of Police, et al. (n.d.). Fentanyl Safety for First Responders. (Accessed 6/18/2019.)
While not specific to the U.S., this webpage includes helpful information regarding handling suspected drugs (including how to conduct a risk assessment of the scene) by level of risk. Tips for disposing equipment are included, as are helpful photos.