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1 <br /> ATTACHMENT B HEALTH AND SAFETY PLAN <br /> CONTROL: An H-Nu PID will be used periodically to monitor ambient air if <br /> the release of vapors is suspected during activities, or if hydrocarbon odors are <br /> detected by smell. Air purifying respirators(APR's) with combination chemical <br /> cartridges will be available for use if vapor concentrations reach designated <br /> action levels in the breathing zone (Section 5.0). Nitrile gloves and tyvek <br /> coveralls may be worn in some instances to prevent skin contact. Voilatile <br /> organic concentrations will be measured in the breathing zone at the beginning of <br /> work and whenever the PID measures greater than 5 units. <br /> 4.3 Heavy Equipment Operation <br /> Operation of drilling equipment present hazards associated with moving <br /> machinery and heavy equipment. <br /> CONTROL: Equipment operators will have adequate experience and training to <br /> ' complete the work safely. All personnel onsite will be advised to work safely <br /> and avoid unnecessary risks associated with operation of this equipment. Hard <br /> hats, steel-toed boots and eye protection will be standard protective equipment. <br /> 4.4 Particulates <br /> Dust impacted with petroleum hydrocarbons may be present in the soil onsite. <br /> This material presents a potential hazard through skin exposure and possible <br /> inhalation. <br /> CONTROL: Gloves and protective clothing will be worn to guard against <br /> dermal exposure to these materials. If significant dust is generated during <br /> fieldwork, dust control will be initiated and personnel on the work site will wear <br /> APR's equipped with combination organic vapor 1 high efficiency particulate air <br /> (HEPA)cartridges. <br /> 5.0 EXPOSURE MONITORING AND ACTION LEVELS <br /> H-Nu Monitoring* Protective Measure <br /> 0 to 5ppm None. <br /> 5 to 10 ppm APR with combination cartridges. <br /> Use detector tube monitoring for benezene. <br /> 10 to 50PP m APR with combination cartridges ventilate <br /> drillsite. <br /> Greater than 50 ppm Ventilate drillsite and stop work until <br /> concentrations decrease below50 ppm. <br /> iEnvironmental science Associates 4 University of the Pacific Site Investigation Work Plan <br /> June 2000 200252 <br />