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Workers shall maintain a constant awareness of traffic patterns/conditions throughout the duration of the field services. 3.2.3 Material Handling — Back Injury Hazard: It is expected that field personnel will be required to lift heavy equipment and supplies and/or perform arduous tasks during this project. Accordingly, back injuries or physical strain may be caused by: routine lifting or one-time-only lifting; the weight of a lifted object; the frequency of lifting; bending, twisting, or rotating during lifting; prolonged sitting; exposure to vibrations; poor arch support in shoes; and, not stretching prior to physical activity. If the following "control" mechanisms are not exercised, debilitating back injury may occur. Control (s): Before attempting to lift and carry an object, always test its weight, first. If it is too heavy, get help. If possible, use mechanical lifting aids. If manageable, the proper method for lifting is: • Get a good footing. • Place feet about shoulder width apart. • Bend knees to pick up load. Never bend from the waist. • Keep back straight. • Get a firm hold. Grasp opposite corners of the load, if possible. • Keep the back as upright as possible. • Lift gradually by straightening the legs-don't jerk the load. • Keep the weight as close to the body as possible. • When changing directions,turn the entire body, including the feet. Don't twist the body. If devices are used for handling materials manually (e.g., two-handed lifters, barrel ring clamps, hand trucks, wheelbarrows, etc.), wear protective equipment like gloves and safety shoes to minimize the potential of appendages becoming pinched or smashed between the load and stationary features. Also, avoid overloading the device. 3.3 Noise Hazards Vehicle traffic or equipment operated at sampling sites may present a noise hazard to employees. In all cases where the sound pressure levels may exceed a time-weighted average noise dose of 85 decibels (the Action Level), the Project Manager will evaluate exposures according to the Geocon Hearing Conservation Program (ref. T8 CCR §§5095-5100). Selection of hearing protection will be made in accordance with the Geocon Safety Equipment Guide. Only hearing protectors (ear plugs or muffs) with a Noise Reduction Rating of 20 dB, or higher, will be used. When worn, earmuffs will be donned in the "over the head" position with the hair pulled back from the sealing surface. Stockton 6-Lane,Task Order No.82 Caltrans Contract 06A 1141,EA 10-03A 1001 Project No.S9200-06-82 - 7- December 2009