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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 CAL OSHA 1990-91 ZSVHOJ/ <br /> PEL TLV <br /> ------------------------------------------------------------- <br /> Benzene 1 ppm (TWA) 1 ppm (TWA) <br /> 25 ppm (Ceiling) <br /> Toluene 100 ppm (TWA) 100 ppm (TWA) <br /> 150 ppm (STEL) 150 ppm (STEL) <br /> Ethylbenzene 100 ppm (TWA) 100 ppm (TWA) <br /> 125 ppm (STEL) 125 ppm (STEL) <br /> Xylene 100 ppm (TWA) 100 ppm (TWA) <br /> 150 ppm (STEL) 150 ppm (STEL) <br /> Gasoline 300 ppm (TWA) 300 ppm (TWA) <br /> 500 ppm (STEL) 500 ppm (STEL) <br /> 5 <br />