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cont. <br /> THORNE���ENVIRONMENTAL <br /> Compound TLV STEL Toxicitv <br /> Xylene 100 150 4300 <br /> Ethylbenzene <br /> — <br /> Benzene is considered an extreme cancer hazard. Applicable MSDS forms are attached. <br /> ` Exposure Monitoring Plan: <br /> A Photo-Ionization Detector (PID) will be us to monitor vapor concentrations around <br /> ` the site. Should concentrations exceed TLV's, rotective measures will be taken. Passive <br /> dosimeter badges will be placed in downwind tions ' readings indicate high <br /> levels of volatile organics in the breathing space. <br /> Personal Protective Equipment: W V <br /> ` All personnel on-site will have access to respirators with organic vapor cartridges. <br /> Replacement cartridges will be available on-site as needed. When handling samples, the <br /> on-site geologist will wear latex gloves. Hard hats will be worn by all personnel on-site <br /> ` when in proximity of drilling equipment. <br /> Work Zones and Security Measures: <br /> ` Access to the site will be restricted to authorized personnel. A set of cones, placards, <br /> or wide yellow tape, surrounding the site will define the perimeter. The Project Manager <br /> L will be responsible for site security. <br /> Decontamination Measures: <br /> Avoidance of contamination whenever possible is the best method for protection. <br /> Common sense dictates that on-site personnel avoid sitting, leaning, or placing equipment <br /> on possibly contaminated soil. <br /> All personnel will be advised to wash their hands, neck, and face with soap and water <br /> before taking a break or leaving the site. Respirators will be washed with soap and <br /> �- water following each day's use. <br /> Drilling and sampling equipment used will be decontaminated by steam-cleaning. <br /> Sampling equipment will be decontaminated before each sample os taken and drilling <br /> equipment will be decontaminated before each boring is commenced. <br /> General Safe Work Practices: <br /> Personal safety and hygiene should be of utmost consideration while on-site. To prevent <br /> ingestion of contaminants no person shall be allowed to eat, drink, or smoke on the site. <br /> The Site Safety Officer will designate an appropriate nearby area. <br /> L <br />