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3: Hazard Analysis Health and Safety Plan <br />3.4.6 Drilling <br />During all drilling activities, the operator must ensure that the appropriate level of protection and <br />appropriate safety procedures are utilized. The operator will verify that equipment "kill switches" <br />are functioning properly at the start of each day's use. Hard hats, steel-toed boots, and ear and eye <br />protection will be required at all times when working around drill rigs. The proximity of <br />underground and overhead utilities must be identified before any drilling is attempted. The rig may <br />not be moved with the mast in the upright position. <br />Workers can effectively manage hazards associated with working around heavy equipment if a <br />constant awareness of these hazards is maintained. These hazards include the risk of becoming <br />physically entangled in rotating machinery, slipping and falling, impact injury to eyes, head and body, <br />and injury from machinery operations. Never work or walk on piles of well casings. Make sure all <br />high-pressure lines and hoses have whip checks attached. Constant visual or verbal contact with the <br />equipment operator will facilitate such awareness. <br />3.4.7 Noise <br />Noise may result primarily from the operation of heavy equipment, process machinery or other <br />mechanical equipment. Hearing protection with the appropriate noise reduction rating (NRR) shall <br />be worn in areas with high noise levels. A good rule of thumb to determine if hearing protection is <br />needed is the inability to have a conversation at arms length without raising voice levels. If loud noise <br />is present or normal conversation becomes difficult, hearing protection in the form of ear plugs, or <br />equivalent, will be required. <br />3.4.8 Underground Utilities <br />Reasonable efforts will be made to identify the location(s) of underground utilities (e.g., pipes, <br />electrical conductors, fuel lines, and water and sewer lines) before intrusive soil work is performed. <br />The state underground utility notification authority (e.g., USA, Dig Alert, Blue Stake, etc.) will be <br />contacted prior to the start of intrusive field activities in accordance with local notification <br />requirements. In areas not evaluated or serviced by the underground utility notification authority, <br />and a reasonable potential for underground utilities exists, one or more of the following techniques <br />will be employed to determine the location of subsurface structures. <br />Contracting the services of a qualified private utility locator. <br />Having a survey of the subject area conducted by staff trained in the use of subsurface utility <br />locating equipment. <br />Subsurface testing (i.e., hand digging or potholing) to the expected depth of probable utilities <br />(not less than 5 feet). <br />If utilities cannot be located or if unlocated utilities are suspected to be present, subsurface activities <br />(i.e., borings, excavation) should not be conducted before the location(s) or absence of underground <br />utilities is confirmed. <br />Typical subsurface location marks are as follows. <br />Red — electrical <br />BROWN Artb CALDWELL <br />3-8