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SITE HEALTH & SAFETY PLAN GEDMATRIX <br /> 5.2 POTENTIAL PHYSICAL HAZARDS AT SITE <br /> Potential physical hazards, as those listed in Table 5.0, are discussed below. <br /> 5.2.1 Underground Utility Hazards <br /> An underground utility check shall be performed prior to initiating any subsurface investigation <br /> or work. The check will include: <br /> ✓ Underground Service Alert (USA) Note: USA must be notified at least 2 working days <br /> before any subsurface work begins. Record confirmation number in project field notes. <br /> Private Locator: <br /> ✓ Plans Check. Facility Contact: to be provided by facility operator <br /> Geophysical Survey. <br /> Additional Information: None <br /> 5.2.2 Overhead Power Lines . <br /> Wherxever.possible, avoid working under overhead high voltage lines. The following are <br /> minimum clearances for overhead high voltage lines. <br /> Normal Voltage Minimum Required <br /> (phase to phase). Clearance(feet) <br /> more than 750- 50,000 10 <br /> more thari 50,000- 75;000 11 <br /> more:than 75,000 - 125,000 13 <br /> more than 125,000 - 175,000 15 <br /> 5 more than 250,000 - 379,000 21 <br /> more than 370,000 - 550,000 27 <br /> more than 550,000 -.1,000;000 42 <br /> {Reference: CCR Title 8, Section 2946, Table Il) <br /> 5.2.3 Noise Hazards <br /> Wear hearing protection when working.near.large heavy equipment, such as drill rigs or earth <br /> r movers, or in other noisy conditions. As a general rule, hearing,protection should be worn when <br /> L two people standing within 2 feet of each other cannot communicate at normal conversational <br /> voice levels. <br /> 11fr21deptdata1PROJE.CT16508.0001document16508-04.doc 7 <br />