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Safety and Health Plan <br />Tracy Ridge Tracy, California <br />March 27, 2019 Terracon Project No. NA187052.1 lrerracon <br /> <br />5.0 SITE HISTORY/SCOPE OF SERVICES <br />It is anticipated that soils and/or groundwater at this project site may be impacted by total <br />petroleum hydrocarbons (TPH), pesticides, herbicides, polycyclic aromatic hydrocarbons (PAHs), <br />metals, and volatile organic compounds (VOCs). The personal protective equipment and direct- <br />reading air monitoring protocols specified below are designed to prevent personnel exposure to <br />contamination in excess of permissible exposure limits. <br />6.0 HAZARD ASSESSMENT <br /> <br />6.1 Chemical Hazards <br />Soils and groundwater at this project site may be contaminated with TPH, pesticides, herbicides, <br />PAHs, metals, and VOCs. Direct contact of skin to contaminated media should be rigorously <br />avoided in an effort to eliminate possible exposure. <br />Benzene is the most significant health hazard contained in petroleum blends and typically <br />comprises less than 1% of regular grade gasolines. Specific health hazard information on <br />petroleum and its most volatile aromatic constituents are provided below. Additional health-hazard <br />information can be found in the chemical information sheets attached to this Plan. <br />GASOLINE <br />Permissible Exposure Limit <br />300 ppm ACGIH TLV <br />Gasoline is irritating to the skin, eyes and mucous membranes. Dermatitis may result from <br />prolonged contact with the liquid. Gasoline acts as a central nervous system depressant. <br />Exposure may cause staggering gait, slurred speech and mental confusion. Gasoline exposure <br />may affect the liver, kidneys and spleen. Absorption of alkyl lead antiknock compounds contained <br />in many gasolines poses an additional health concern, especially where there is prolonged skin <br />contact. <br />DIESEL FUEL (No. 2-D) <br />Permissible Exposure Limit <br />100 mg/m3 ppm ACGIH TLV (As mist/vapor) <br />Diesel fuel is a skin and mucous membrane irritant and a central nervous system depressant. <br />Poisoning may affect the liver and kidneys. Skin contact may result in drying and cracking of the <br />skin. <br />FUEL OIL (No. 6) <br />Permissible Exposure Limit <br />400 ppm OSHA PEL (as petroleum distillates/naphtha) <br />0.2 mg/m3 OSHA PEL (Coal Tar Pitch Volatiles, "PNA's") <br />6