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<br />19 <br /> <br />Non-Chemical Hazard Yes No <br />21. . Work from Heights ☐ ☒ <br />22. . Poor Lighting ☐ ☒ <br />23. . Hazards to the Public ☒ ☐ <br />24. Munitions and Explosives of Concern ☐ ☒ <br />25. Hot Work ☒ ☐ <br />26. Critical Lifts ☒ ☐ <br />27. Ergonomics ☒ ☐ <br />28. Driving on Site ☒ ☐ <br />29. Struck-by / Against ☒ ☐ <br />30. Site Security ☒ ☐ <br />31. Hand Tools ☒ ☐ <br />32. Sensitive Species ☐ ☒ <br />33. Lockout-Tagout ☐ ☒ <br />34. Lifting and Rigging ☒ ☐ <br /> <br /> <br />4.2 ASSESSMENT OF NON-CHEMICAL HAZARDS <br /> <br />4.2.1 OVERHEAD OBSTRUCTIONS/LINES <br /> <br />Before the start of work, all work areas and mobilization pathways will be evaluated to determine <br />if overhead obstructions (OHOs) are present. OHOs include electrical and communications lines, <br />piping, bridges, and crosswalks. Determinations must be made if high clearance equipment or <br />trucks with beds that can be raised (e.g., dumps, roll -off containers) will be used on the project. <br />All equipment (e.g., drill rig, excavator) must remain a safe (minimum 20-foot) distance from <br />overhead power lines, as stated in California Code of Regulations (CCR), Title 8, Section 2946 <br />Table 1. If project work is performed within 20 feet of OHOs, regardless of line type or voltage, <br />the HSO must approve the job scope and Activity Hazard Analysis (AHA). <br /> <br />Table 1. General Clearances Required from Energized Overhead High Voltage <br />Conductors <br />Nominal Voltage <br />(Phase to Phase) <br /> Minimum Required <br />Clearance (Feet) <br />600 50,000 6 <br />over 50,000 345,000 10 <br />over 345,000 750,000 16 <br />over 750,000 1,000,000 20 <br />