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10-30-1998 9:3dAM FROM AJ#NGINEERING 5109330588 p J. N. S. CONSTRUCTION Site-Specific S fety and Health Plan Beacon �tatlon Manteca Site Control Keneuree Excavations It is anticipated that there will be an excavapon exceeding five feet in depth into which persons will be required to descend. Prior to such eptcavation, a permit is to be obtained from the local office of the CaWornia Division of Occupatia I Safety and Health (a permit applying to multiple jobsites or an annual permit Is acceptable in lieu of an individual permit). Ladders, stairways, or other safe means of gess are to be provided and used in excavations exceeding 4 feet In depth. _ Employees exposed to public vehicular traf o are to be provided with and required to wear warning vests or other suitable garments marked with high-visibility material. A person who is capable of identifying existing and predictable hazards relative to excavations and related conditions and who has author�y to take prompt corrective action to eliminate such hazards is to be designated as a"competent person'for the project. The competent person is to make daily inspections of the excavation adjacent areas, and protection systems. Inspections are also to be conducted after"ch rain storm or other hazard increasing occurrenpa. Soil movement hazards are to be mitigated by an acceptable protective system unless the competent person determines that there is no indication of a potential cave-in for an excavation less than 5 ft. in depth. For excavations exceeding 5 ft. in depth, the protection system is to be of one or a combination of the following, 1) sheet piling and Lbeems, 2)timber shoring, 3)aluminum hydraulic shoring,4)trench shiculds. or 5)sloping and trenching. Excavated material(spoil pile) is to be keptlat least 2 ft. from the edge of the excavation. Adequate barriers and warnings are to be used for unattended excavations to protect persons from falling Into the excavation. Fire and Explosion Contra] The atmosphere is to be tested before empioyees enter an excavation greater than 4 ft. in depth. Adequate precautions,such a ventilation, is to be performed where the test indicates the presence of a flammable vapor in ex of 20 percent of the lower explosive limit of the gas. When atmospheric controls intended reduce the level of contaminant are used,tests are to be repeated as often as necessary ensure that the atmosphere remains safe. Testing of flammable vapors are also to tie, periodically of excavated material to ensure that vapors do not present a hazard to the t ubiic health and safety. Gasoline presents a fire and explosion haz rd when exposed to heat or flame. Vapors are heavier than air and may travel a conside;le distance to a source of ignition and flash back. Vapor-air mixtures are explosive above theyflash point. Odnbtr 79. 1998 Page 3