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fi <br /> gg <br /> 3. Borings ar well.; emitting excessive V0C concentrations <br /> will be ventilated, capped, or shut in as necessary. <br /> 4 . Contaminated soil will be covered with clean soil or <br /> Po]-Yothylcn� sheeting arid/or sprayed with water in <br /> order to reduce vaporization of V0C's. <br /> Drilling equipment will be bonded and grounded during all <br /> operations to control ignition sources. <br /> .:A <br /> 'r rr T xh <br /> .a Workers will be required to wear half-face air purifying <br /> respirators with organic vapor cartridges under the following <br /> circumstances: <br /> 1) if the worker is continuously exposed throughout the day <br /> to VOC vapors that exceed the permissible exposure level <br /> or <br /> (time weighted average) (PEL-TWA) for gasoline (300 ppm) , <br /> 2) if the worker is exposed at any time to VOC vapors that <br /> exceed the permissible exposure level (short term exposure <br /> limit) (PEL-STEL) for gasoline (500 ppm) . <br /> Similar precautions will he taken with regard to other toxic <br /> chemicals, such as BTEX components. <br /> If VOC vapors exceed 1, 000 ppm, Pull-face air purifying <br /> respirators with organic vapor canisters will be worn. <br /> i <br /> PhysiCal wi h <br /> n <br /> [corkers who must come in direct contact with VOC-contaminated <br /> soil. ar ground water for sampling p g purposes, will be .required <br /> to wear protective gloves and/or necessary protective <br /> clothing to prevent skin contact <br /> rhyi Hz r <br /> Ac.ci.'dents will be prevented by personal protective equipment, <br /> engineering controls, and the exercise of reasonable caution <br /> during, work activities. <br /> All workers entering high--noise-areas will be required to <br /> wear hearin <br /> g. protectiorr (ear plugs or muf=fs) . <br /> A^5 <br />