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SITE SECURITY <br /> Access during all on-site 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 sampling equipment. At a minimum the following monitoring will be performed: <br /> A direct-reading photoionization 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 /> activities. The meter will be calibrated with isobutylene gas. Total organic vapor measurements <br /> will be used to determine the appropriate levels of respiratory protection, and identify conditions <br /> that would require site evacuation. Total organic vapor concentrations in the workers breathing <br /> zone in excess of 100 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 /> on-site until the work zone concentrations are reduced to below 250 ppm. <br /> EMPLOYEE TRAINING AND INFORMATION <br /> All site personnel working the exclusion zone will be in compliance with the training <br /> requirements of CFR 29, 1910.120. <br /> H&SPLAN.WP <br />