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40 C. Air Monitoring, Personnel Monitoring, Environmental Sampling Techniques and Instrumentation The following monitoring will be performed at this site. _ A combustible gas indicator (CGI) will be used to monitor the atmosphere at the site for flammable vapors. _ A Photoionization Detector (PID) or equivalent will be used to determine the appropriate level of protection. _ A Photoionization Detector (PIA) or equivalent will be used to screen soils for contamination as they are removed from the excavation. Monitoring with the CGI, for flammable vapors, and the PID, to determine levels of protection, will be performed continually and documented in writing. Monitoring with the PID to screen for soil contamination will be performed as needed. When the PID is being used to screen soils, breathing zone measurements will be alternated with soil screening measurements. Breathing zone measurements from the person screening the soils will be used to guide levels of protection for all workers within the exclusion zone. All environmental monitoring and sampling at the sire will be performed in accordance with Federal, State, and Local Regulations and accepted standards. Monitoring instruments will be calibrated and maintained in accordance with the manufacturer's instructions. Calibration will be documented in writing. SPILL CONTAINMENT PROGRAM If there is no health threat from containing a spill, the following spill control measures will be implemented immediately: a. Take measures to stop the release. Construct a containment barrier using excavated soil to prevent the contaminant from spreading. C. Remove as much of the liquid portion of the substance as possible using a pump truck and/or adsorbent material. Place contaminated containment soil into an appropriate container for disposal. e. Place all contaminated materials which cannot be decontaminated into appropriate containers for disposal.