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Safety and Health Plan Vacant Property Tracy, California Irerracon May 21, 2021 Terracon Project No. NA197074B XYLENE Permissible Exposure Limit 100 ppm OSHA PEL Xylene is a mild eye and mucous membrane irritant, primary skin irritant and a central nervous system depressant. Ingestion causes severe gastrointestinal upset and creates an aspiration hazard. Chronic inhalation results in symptoms that resemble acute poisoning, but are more severe systemically. PESTICIDES AND HERBICIDES Due to the unknown nature and concentrations of the above potential contaminants, Terracon staff will follow standard safety procedures and wear protective gloves while handling all soils. A PID will be regularly used to screen soil and to monitor potential breathing zone hazards. All field staff will be reminded to thoroughly wash their hands before eating to reduce the chance of chemical exposure. 7.0 Drilling Safety Precautions Project activities will consist of drilling eight soil borings to 10 feet below grade surface (bgs) in the area of the presumed soil stockpiles, and eight soil borings to 20 feet bgs in the area of the former pipeline release. The borings will be advanced using a track-mounted, hollow-stem auger rig equipped with 3.5-inch augers. If groundwater is encountered, samples will be collected. Groundwater samples will be collected by placing new schedule-40 polyvinyl chloride (pvc) pipe with 10 feet of screen in the open boreholes. Once groundwater infiltrates the screened-casing, and peristaltic pump and new tubing will be used to collect grab groundwater samples from each boring with groundwater. The personal protective equipment and direct-reading air monitoring requirements specified below are designed to prevent personnel exposure to contamination in excess of permissible exposure limits. Personnel must remain aware of the potential for fire if soils saturated with flammable liquids, such as gasoline, are encountered. 8.0 Site Physical Hazards/Precautions The physical hazards associated with intrusive site activities can include inclement weather, material handling, slips/falls etc. Some anticipated hazards and means for preventing injury from those hazards are as follows: 0o Back injuries due to improper lifting - Use proper lifting techniques. Lift with the legs, not the back. Keep loads close to the body and avoid twisting. Loads heavier than 50 pounds (lbs.) require a second person or mechanical device for lifting. Use mechanical devices such as drum dollies, hand trucks, and tool hoists (for lifting augers)to lift or move heavy loads whenever possible. 8