The Primary Response Incident Scene Management (PRISM) series was written to provide authoritative, evidence-based guidance on mass casualty disrobe and decontamination during a chemical incident. The PRISM documentation comprises three volumes: Strategic Guidance, Tactical Guidance, and Operational Guidance.
https://www.medicalcountermeasures.gov/barda/cbrn/decontamination-guidance-for-chemical-incidents/