COMPLIANCE INFO_1995-2004 - Laserfiche WebLink

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a 5.0 AIR MONITORING Air monitoring to screen for employee safety and health will be performed as necessary based on the hazards present at the site. Monitoring equipment will only be used by individuals trained in the use and calibration techniques for that specific piece of equipment. Monitoring instrumentation available on site may include the following: • Photoionization detectors • Oxygen meters • Combustible gas meters • Organic vapor meters Calibration of Equipment Monitoring equipment will be inspected prior to use for that day. The sensitivity of each meter will be determined prior to each day's usage by performing a "bump" test. This procedure involves attaching a known concentration of the calibration gas to the meter. If the meter reads within +/- 10% or the calibration gas concentration, the meter is acceptable for use. If the meter reads outside of this acceptable range, then it must be recalibrated according to the manufacturer's specifications. All calibration records will be noted on the calibration log and stored with the meter. Air Monitoring for Health and Safety Initial air monitoring will be conducted to establish a baseline. If baseline readings are in excess of listed PELs, then monitoring will continue at 15 minutes intervals. If readings are in excess of PEL are encountered, engineering means will be used to eliminate or control hazards. If engineering means are unable to adequately protect employees against hazards, the employees must don the appropriate PPE. Air readings should be taken downwind from stockpiles and near areas frequent by the public. Appropriate measures will be taken to prevent the public from being exposed to concentrations of any hazardous material in excess of the PEL. Air Monitoring for Soil Segregation Air monitoring with a PID will be used to aid the environmental contractor in making the determination of clean vs. dirty soil. Soils should be segregated if: • PID readings are greater than 10 ppm when calibrated to hexane; • Soil is visually contaminated; or • Soil is otherwise unsuitable to be used as backfill material. Air Monitoring for SCAQMD-Rule 1166 When excavating in areas that are known or possibly have underground storage tanks that contain VOCs monitoring shall be conducted in accordance with SCAQMD guidelines. PID readings will be converted and recorded as if the PID was calibrated to 50ppm hexane.