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' Beacon Cardlock Station Number 610 SSB 92-1001-01 3300 Waterloo Road Page 4 Stockton, California The general categories of hazards associated with this investigation are- Mechanical hazards. cuts, contusions, slips, trips, fails, being struck by moving objects, being caught by rotating objects, also muscular injury potential caused by overexertion or improper ' movement (e g back injury due to improper lifting), etc. • Electrical hazards possible excavation of buried cables, exposure to overhead power lines, wet electrical cords, etc ' • Chemical hazards exposure to chemicals/contaminants listed in Section 4 0 of this plan and exposure to extraction solvents, etc ' Fire hazards possible excavation of buried utilities, flammable petroleum hydrocarbons, equipment fires, etc • Thermal (heat stress) Hazards exposure to outside temperature extremes, and/or increased body temperatures while wearing protective clot hing/equipment, etc • Acoustical hazards exposure to excessive noise created by drilling operations and/or related to the site-specific operations, etc • Routine job-related hazards in the subcontractor's Iaboratory Neither these hazards nor any activities performed in the subcontractors laboratory are covered by this plan. Job hazard analyses associated with most major work activities are presented in the following sections 2.1 Hollow-Stern Auger Drillin Hollow-stem auger drilling activities will potentially expose field personnel to the following hazards IChemical hazards • Exposure to various chemical substances, including but not limited to petroleum hydrocarbon liquids and vapors, caustic and acidic mists, and petroleum contaminated soils, sludges, or liquids Certain precautions may be necessary to properly control the potential fire/explosion/health hazards associated with these chemicals I ISSB ENVIRONMENTAL CONSULTANTS, INC