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Health and Safety Plan 455 E lith St Tracy,California 3.3 Physical Hazards Physical hazards discussed under this section include underground and overhead utilities, drill rigs, machinery and moving parts, electrical hazards, noise,slips,trips,and falls, motor vehicle and heavy equipment operation, and ergonomic hazards. 3.3.1 Underground and Overhead Utilities Reasonable efforts will be made to identify the location(s)of underground utilities (e.g., pipes, electrical conductors,fuel lines, and water and sewer lines) before mechanized soil intrusive work is performed.The state underground utility notification authority Underground Services Alert (USA),will be notified at least two business days (not including the day of notification) prior to starting field activities. USA in turn will notify representatives of the utility companies who will mark the location of underground services entering the property. USA markings will be noted prior to drilling to prevent damage to utility lines. The Project Manager is responsible to ensure that underground utility locations are identified prior to the commencement of any subsurface (> 1 foot) activities. Resources include site plans, utility companies, and regional utility locating services.The proper utility company personnel should certify the deactivation of utilities, and the certification should be retained in the permanent log. In accordance with CCR,Title 8,Section 1541(Excavations), an excavation shall not commence until: • The excavation area has been marked as specified in Government Code Section 4216.2 by the excavator; and • The excavator has received a positive response from all known owner/operators of subsurface installations within the boundaries of the proposed project;those responses confirm that the owner/operators have located their installations, and those responses either advise the excavator of those locations or advise the excavator that the owner/operator does not operate a subsurface installation that would be affected by the proposed excavation. Only qualified persons shall perform subsurface installation locating activities, and all such activities shall be performed in accordance with this section and Government Code Sections 4216 through 4216.9 When excavation or boring operations approach the approximate location of subsurface installations,the exact location of the installations shall be determined by safe and acceptable means that will prevent damage to the subsurface installation, as provided by Government Code Section 4216.4. Appendices Terraphase Engineering Inc.