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HASP-Additional Site Investigation for PFAS BSK Project#E20-016-01F Stockton Metropolitan Airport(SCK) May 5,2023 Stockton, California Page 10 8. SAFE WORK PRACTICIES The following safe work practices will be implemented: • Eating, drinking, chewing gum or tobacco, and smoking are prohibited in the contaminated or potentially contaminated area or where the possibility for the transfer of contamination exists. • Avoid contact with potentially contaminated substances. Do not walk through puddles, pools, mud, etc. Avoid,whenever possible, kneeling on the ground, leaning or sitting on equipment or ground. Do not place monitoring equipment on potentially contaminated surfaces (i.e., ground, etc.) • Field crew members should remain aware of potentially dangerous situations (i.e., presence of strong, irritating or nauseating odors). • Prevent,to the extent possible, spillage. If a spill occurs, contain liquid if possible. • Prevent or minimize splashing of contaminated materials. • The number of personnel and equipment in the work/exclusion zone should be minimized, but only to the extent consistent with work force requirements of safe Site operations. • Only personnel trained (Title 8, CCR, Sec. 5192) and authorized are permitted to work or enter the exclusion zone. • Personal protective equipment is used as specified and required. During sampling activities,the following standard safety procedures are employed: • Sampling equipment is decontaminated before proceeding to each sampling location. • At the sampling location, sampling equipment is decontaminated after each use. • Work in less contaminated areas should be conducted first where practical. • Work upwind of excavations, power equipment, or drilling rig, if possible. • The minimum number of personnel necessary to achieve the objectives are allowed within 25 feet of the excavating, drilling, or sampling activity. • If emergency and backup subcontracted personnel are at the Site,they will remain at least 25 feet upwind from the exclusion zone, where practical. • Unauthorized personnel must remain outside the work/exclusion zone at all times. 9. HEALTH AND SAFETY EQUIPMENT LIST • Hard hats; • safety glasses with side shields; • ear plugs or muffs; • respirators and filter cartridges; • Tyvek° suits and boot covers, • muck boots;