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"�. M;R��,77P4,�4�7' <br /> =, t <br /> J 4 <br /> A) Combustible Cases and Vapors <br /> Potentially explosive concentrations of gases and vap.%rn <br /> will be monitored at least once every 15 minutes during <br /> sampling activities using a combustible gas meter. If at <br /> any time the concentration exceeds 20%- of the lower <br /> explosive limit (LEL), activities will stop and the area <br /> will be evacuated until gas levels have been reduced to less <br /> than 20* of the LEL and the source of combustible gases or <br /> vapors has beon determined. <br /> B) Total Organic Vap,rs <br /> A direct reading photoienization detection (PID) meter (HNU <br /> PI 101 or equivalent) will be used to monitor the <br /> concentrations of organic vapors in the work area. <br /> Measurements will be taken at least once every 15 minutes <br /> during surface and subsurface sample collection. The meter <br /> will be calibrated for benzene. Total organic vapor <br /> m®asurements will be used to determine the appropriate <br /> levels of respiratory protection and conditions for site <br /> "4 evacuation. .Total organic vapor concentrations in the <br /> `-•' workers breathing zone. in excess of 10 ppm above background <br /> will trigger an upgrade from level D to level C protection. <br /> Breathing zone concentrations in excess of 250 ppm will stop <br /> the work on-site until the work zone concentrations are <br /> reduced to below 2150 ppm. <br /> EMFLOYEE TRAINING AND INFORMATION <br /> Prior to site activity, WaterWork will conduct training for all <br /> site personnel without a previous documented hazardous waste <br /> training course. The training will have the following <br /> objectives: <br /> Ensure that workers are aware of potential hazards <br /> they may encounter... <br /> Provide the knowledge and skills necessary to <br /> perform the work with minimal risk to workers <br /> health and safety. <br /> Familiarization with the Site Safety plan and <br /> site-specific-requirements.-- ----- <br /> a <br />