Establishing Standards for the Assessment and Decontamination Cleanup of Opioid-Contaminated Properties

A case is described where a property was used as a clandestine opioid (fentanyl and carfentanil) processing, handling, pill pressing, and packaging site. These activities resulted in potentially lethal opioid residue contamination which remained after police intervention. This case details the environmental assessment and sampling procedures, findings, and decontamination processes that were used to mitigate the property. A safe re-occupancy criterion was established and used as the basis for adoption of a state standard for residential cleanup in California. Regulatory hurdles and key lessons are presented so that others may consider development of similar public health policy. Involvement of public health departments in the assessment and cleanup of sites contaminated with opioids and other illicit drugs and the development of standards for cleanup and worker protection is an important and yet often overlooked public health measure.