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1 • <br /> Beacon Cardlock Station Number 610 SSB 92-1001-01 <br /> 3304 Waterloo Road Page 19 <br /> Stockton, California <br /> 8.1 Photoionization Detector <br /> During this investigation, the ambient air, drilling returns, soil samples, and boreholes will be screened <br /> with a calibrated 580-B brand, portable photoionization detector (PID) The PID is a direct reading <br />' real-time analyzer that is capable of detecting most of the volatile hydrocarbons constituents present <br /> in a vapor phase. The PID to be used for this investigation uses a 10 2 electron volt lamp and is <br />' calibrated using an iso-butylene calibration gas Iso-butylene is a relatively safe calibration gas similar <br /> to ionization potential to benzene (the carcinogen of primary concern present in petroleum products) <br />' 8.2 Sensidyne Detector Tubes <br />' Sensidyne detector tubes will be used to determine airborne concentrations of benzene in the breathing <br /> zone during this investigation A member of the field team will take detector tube readings if high PID <br /> measurements so warrant. <br /> Readings will be taken in the area where the field team members are working Sensidyne #121 benzene <br /> detector tubes will be used (measurement range 5-60 ppm) The detector tube pump will be inspected <br /> for proper operation prior to field operations <br />' 90 SAFETY AND HEALTH TRAINING <br /> All field personnel will be trained in methods of safely conducting field activities. This plan is intended <br /> to provide additional site specific information to accomplish this goal It will be the responsibility of <br /> the Project Directors, Safety Officer, and Safety Task Leader to ensure the field team has access to, <br /> reads, and understands this plan It will be the individuals responsibility to bring to the attention of <br />' the Project Director or Safety Officer any portion of this plan and related training they do not fully <br /> understand Prior to the commencement of the field portion of this investigation, the field team will <br /> meet to discuss the contents of this plan and make sure all members understand it <br />' SSB ENVIRONMENTAL CONSULTANTS, INC <br />