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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 8 Skin contact with potentially contaminated soil or groundwater can be minimized by wearing personal protective clothing. Ingestion of contaminated materials can be minimized by good personal hygiene during decontamination (i.e., thoroughly washing face and hands with soap and water before eating or drinking). 4. EXPOSURE MONITORING PLAN Heat stress, noise, and hydrocarbon exposures may be encountered. Monitoring protocol for these conditions are presented above. Noise levels will not be monitored; personnel will wear hearing protection. Care will be exercised by operators of backhoes to minimize generation of dust during excavation operations. If a drilling rig is used, drill cuttings will be contained on Site. Drilling operations are not expected to generate a sustained dust cloud. If necessary, a water mist may be applied to reduce dust. Unusual or unrecognized odors or other chemical warnings noticed during work activities will result in cessation of work until the hazard is identified and the risk assessed. 5. PERSONAL PROTECTIVE EQUIPMENT Minimum Protective Equipment for Site Personnel Outside of the Work/Exclusion Zone: • Hard hat; • steel-toed boots; and • eye protection. Work/Exclusion Zone Requires "LEVEL D" PPE FOR THE WORK AT THIS SITE,which includes: • Hard hat; • eye protection (safety glasses with side shields); • face and eye protection (safety glasses and face shield) during pressure grouting; • steel-toed boots; • ear protection in vicinity of drilling operations; and • nitrile® gloves (drillers can wear under work gloves). Based on subjective evidence of hazardous conditions,the following would be donned at the discretion of the Site Safety Officer: • Chemical-resistant steel-toed boots; • surgical latex or vinyl gloves (inner);