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.� , <br /> . <br /> A) �sml�l�tlxLl. � � <br /> 1 Potentially explosive concen <br /> will be monitored at least onceteveeryonofl�asminutes during <br /> sampling activities using a combustible gas <br /> i � <br /> any time the concentration exceeds 20% oftethe r. Ilowpt <br /> explosive limit (LEL), activities will stop and the . area <br /> will be evacuated until gas levels have been reduced to less <br /> i , than 20% of the LEL and the source of combustible gases or <br /> vapors has been determined. <br /> I <br /> B) Total Oraanic <br /> i w <br /> A direct reading g photoionization 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 mjn11t615 <br /> during surface and subsurface sample collection. The meter <br /> will be calibrated for benzene. Total organic vapor <br /> measurements will be used to determine the appropriate <br /> levels of respiratory protection and conditions for site <br /> evacuation. Total organic vapor concentrations in the <br /> workers breathing zone in excess Of 10 ppm above background <br /> -i <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 250 ppm. <br /> EMPLOYEE TRAINING AND INFORMATION <br /> i 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 /> _ r <br /> } <br /> a Ensure that workers are aware ofpotential 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 /> a Familiarization with the Site Safety plan and <br /> ,_ --- site-specific--requirements: - -- - - - <br /> x. s.. <br /> dad§� <br /> M I <br /> 4 ,7 <br />