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` �. L 3.7 Thermal Extremes — Heat Stress a id Heat Strain L Type(s)/Source: Solar load—working outdoors in spring/summer months Qualified Exposure Risk: Moderate Primary Controls: Compliance with T8 CR§3395 Heat Illness Prevention him Dress appropriately r the expected weather conditions. Hazard: In addition to the chemical,physical and operational hazards referenced above, heat stress may present a potential hazard to on-site personnel during the on-site operations. This hazard can be created when individuals work in warm temperatures while wearing relatively impervious protective clothing. i.. When ambient air temperatures at the site exceed approximately 75 degrees Fahrenheit, heat stress can result. If these conditions are encountered,the p cautions referenced below should be implemented. ` Controls: The SSO should regularly monitor a nbient air temperature. Field team members will be observed for signs and symptoms of heat stre is including: dizziness, profuse sweating, skin color change, and increased heart rate and vision pro Aems. Personnel who exhibit any of these symptoms will be removed from field work and requeste to consume 2 to 4 pints of electrolyte fluid or cool water every hour while resting in a shaded are t. The individual should not return to work until the ` symptoms are no longer recognizable. If sy iptoms appear critical, persist or get worse, seek immediately medical attention. r. To control the potential occurrence of heat stress, preventive measures will be evaluated and implemented on a daily basis(ref.T8 CCR§3395 Heat Illness Prevention).These measures may include: • Schedule periodic cooling and rest(recovery periods in a shaded area(ref. T8 CCR§3395(d)Heat Illness Prevention); • Designated shaded rest areas, or portable s de structures must be available when the ambient daily high temperature is predicted to exceed 85 degrees Fahrenheit, or 75 degrees Fahrenheit if ►� CPC will be required to be wom;and, • Inducement of water intake, the equivaleni quantity of 1 quart of water per hour per on-site ►. archaeology staff (2 gallons per person) be available before work begins unless provisions for immediate water replenishments are available (nearby store, plumbed water supply, etc.). Water must always be replenished before running oi it(ref.T8 CCR§3395(c)Heat Illness Prevention). The implementation frequency of these measures will be the responsibility of the SSO 3.8 Chemical Hazards The risk of significant exposure to soil contaminants is considered to be low to moderate while L performing the soil characterization and removal tasks required on this project. Soil sampling methods, 6 Linden UST SI and Removal,Task Order No.34 Caltrans Contract 06A1895,EFIS 10-1300-0181-0 V eo Gcon Project No.59800-01-34 - 1 I - October 2013,Revised September 2014