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3.1 PROJECT CONTACTS <br />Unanticipated occurrences at the site must be reported to the <br />following personnel as soon as possible <br />■ ERIC V. MONTESANO, Safety Coordinator 510-614-8390 <br />Paradiso Mechanical, Inc. <br />San Leandro, CA 94577 <br />■ PAUL PARADISO, Project Manager 510-614-8390 <br />Paradiso Mechanical, Inc. <br />San Leandro, CA 94577 <br />3.2 HEALTH AND SAFETY HAZARDS <br />Health and safety concerns on site may consist of: <br />- Chemical hazards: <br />Diesel, Gasoline, Benzene, Toluene, Ethyl Benzene and <br />Xylenes. <br />Physical hazards: <br />- Operation of heavy equipment; <br />- Semi-Trucks/Automobiles and other vehicle traffic; <br />- Excavation pits/trenches; <br />- Underground electrical, water and sewer lines. <br />3.3 HAZARD ANALYSIS <br />To the best of our knowledge, the property previously operated <br />gasoline, diesel, and waste oil tanks. Historic data and <br />evaluation of subsurface data indicates the presence of elevated <br />levels of petroleum hydrocarbons. <br />3.4 EXPOSURE PREVENTION AND SAFETY REQUIREMENTS <br />This section describes the hazard and danger of exposure to <br />chemicals and physical hazards present at the site. Possible <br />contingency plans and safety requirements are also presented on <br />this section. <br />3.4.1 HAZARD EXPOSURE GUIDELINES <br />Substances <br />CAL OSHA <br />PEL <br />1990-91 ZSVHOJ/ <br />TLV <br />------------------------------------------------------------- <br />Benzene 1 ppm (TWA) 1 ppm (TWA) <br />25 ppm (Ceiling) <br />Toluene <br />100 ppm (TWA) 100 ppm (TWA) <br />150 ppm (STEL) 150 ppm (STEL) <br />Ethylbenzene 100 <br />ppm <br />(TWA) <br />100 <br />ppm <br />(TWA) <br />125 <br />ppm <br />(STEL) <br />125 <br />ppm <br />(STEL) <br />Xylene 100 <br />ppm <br />(TWA) <br />100 <br />ppm <br />(TWA) <br />150 <br />ppm <br />(STEL) <br />150 <br />ppm <br />(STEL) <br />Gasoline 300 <br />ppm <br />(TWA) <br />300 <br />ppm <br />(TWA) <br />500 <br />ppm <br />(STEL) <br />500 <br />ppm <br />(STEL) <br />5 <br />