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s <br /> �. SITE SECURITY <br /> Access during all on-she activities will be restricted to authorized personnel. All personnel and <br /> authorized visitors must contact the Safety Coordinator/Project Manager prior to entering and <br /> exiting the exclusion area. <br /> RECORD KEEPING <br /> All site safety records pertaining to the site characterization study will be maintained by the <br /> Safety Coordinator/Project Manager throughout the project. <br /> AIR MONITORING <br /> The Safety Coordinator/Project Manager will conduct periodic air monitoring, using direct- <br /> reading <br /> irectreading sampling equipment. At a minimum the following monitoring will be performed: <br /> A direct-reading pftatoionization detector(PID) meter(Thermo-Environmental Model 580A or <br /> equivalent) will be used to monitor the concentrations of organic vapors in the work area. <br /> _ Measurements will be taken at intervals determined by the Site Safety Officer during drilling <br /> r� activities. The meter will be calibrated with isobutylene gas. Total organic vapor measurements <br /> will be used to determine the apfropriate levels of respiratory protection,and identify conditions <br /> that would require site evacuation. Total organic vapor concentrations in the workers breathing <br /> z <br /> ` zone in excess of 104 ppm of volatiles above background will require the use of Personal <br /> Protective Equipment. Breathing zone concentrations in excess of 250 ppm will stop the work <br /> i <br /> on-site until the work zone concentrations are reduced to below 250 ppm. <br /> - EMPLOYEE TRAINING AND INFORMA'T'ION <br /> All site personnel working the exclusion zone will be in compliance with the training <br /> - requirements of CFR 29, 1910.120. <br /> QMMrr.wr <br /> :r <br />