COMPLIANCE INFO - Laserfiche WebLink

Home Browse Search

Site Health and Safety Plan Countryside Market, Stockton, California March 21, 2014 5.0 AIR MONITORING Whenever work is performed that might generate gases, organic vapors, dusts, fumes, mists, or other airborne hazardous materials, air monitoring will be conducted. Breathing zone air monitoring will be conducted periodically throughout the day while work is being performed under above conditions, and results will be documented (see Appendix H). The following instruments may be used to monitor air quality: Photoionization Detector (PID) — It will be used to detect trace concentrations of certain organic gases and a few inorganic gases in the air. The PID detects mixtures of compounds simultaneously. PID readings do not measure concentrations of any individual compound when a mixture of compounds is present. The PID will serve as the primary instrument for personnel exposure monitoring. The breathing zone will be monitored at least two times per hour. Colorimetric Tubes - If the PID readings indicate the potential for exposures exceeding actions levels, hand pumps with chemical-specific colorimetric tubes will be used. In general, at a site suspected to contain volatile organic compounds, chemical-specific calorimetric tubes should be available for site-related VOCs (e.g., benzene, trichloroethene, tetrachloroethene, vinyl chloride). Combustible Gas Indicator/Oxygen — During operations involving known combustible materials (e.g., free product) or operations conducted in an oxygen deficient environment (e.g., confined space), an approved Combustible Gas Indicator/Oxygen Meter and/or a four gas meter will be used to measure the concentration of flammable vapors and gases and oxygen in the air during field activities. Flammable gas concentrations are measured as percentages of the Lower Explosive Limit (LEL). Oxygen content is measured as a percentage of air. All equipment should be calibrated and maintained in accordance with the Equipment Calibration and Maintenance table in Appendix H. All air monitoring should be logged on the Air Monitoring Log in Appendix H. Table 3 presents the action levels for air quality monitoring. As data is collected, work procedures, engineering controls and PPE will be evaluated. HASP 21MAR2014 5-1 APEX