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Work Plan—Site Sampling Page 3 West Weber Site-Stockton GPE Project 536.2 inhalation of dust ingestion of small amounts of contaminated soil can also occur where an adequate level of hygiene is not exercised. Skin contact could also represent a risk. Any of a large number of chemicals could be present in the soil at low concentrations. These chemicals include metals such as lead and arsenic, petroleum hydrocarbons, and semi-volatile organic compounds such as solvents or PAHs. It is possible that pesticides could also be present in the soil in low concentrations. These chemicals are associated with highly variable levels of toxicity, and some chemicals could be acutely toxic. The indicated protection for the sampling work is the use of safety glasses, gloves, and good ventilation. The possibility of inhalation of dust will be mitigated by sampling only when winds are sufficiently calm that dust is not be raised. Heat Stress/Stroke During periods of high summer heat, heat stress and heat exhaustion can pose a hazard to workers, especially for those site workers wearing impermeable or semi-impermeable protective clothing. In this case, such clothing is not expected to be needed. Personnel should be aware of the early signs and symptoms of heat stress/exhaustion. These include rapid or pounding heart rate, lightheadedness, fatigue, and excessive sweating. As heat stress continues cramping or muscle spasms may develop and the person becomes weak. As heat stress progresses to heat exhaustion, the person becomes nauseous, develops a headache, and becomes less responsive. Ultimately, heat stroke occurs which is marked by increased body temperature, mental confusion, loss of consciousness, and rapid but weak pulse. These conditions can result in severe injury or death. First Aid — If any of these symptoms occur, immediately move the victim to a shady, cool area with good air circulation. Cool victim; if conscious, he may try to sip water. Remove protective clothing; treat for shock. Get medical attention. Noise The job site is not generally expected to be so noisy as to pose a hazard to hearing. The only equipment expected to be used that generates significant noise is the Geoprobe drilling rig. This equipment will be muffled and should not pose a health hazard unless prolonged exposure at very close proximity is experienced. By using normal work procedures, no special hearing protection should be needed. Safety Hazards Common physical hazards associated with soil boring and sampling activities, are expected lie primarily with operation of the Geoprobe drilling rig. The drilling contractor is responsible for the proper inspection, maintenance and use of their equipment. All work will be conducted in a safe manner in compliance with appropriate OSHA regulations (29 CFR). 2937 Veneman Avenue, Suite B240 Geo-Phase Environmental Inc. Phone: (209)569-0293 Modesto, Ca 95356 Fax: (209)569-0295