This is a non-personal service contract to provide an onsite Dust Hazard Analysis (DHA) per NFPA 660 Chapter 7 (Latest Revision), Standard for Combustible Dusts and Particulate Solids, to meet safety ... This is a non-personal service contract to provide an onsite Dust Hazard Analysis (DHA) per NFPA 660 Chapter 7 (Latest Revision), Standard for Combustible Dusts and Particulate Solids, to meet safety requirements. Please see attached Performance Work Statement for specific details.