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stretched beyond allowable deformations; cables and ropes with more <br /> than the allowable number of broken strands; missing grounding <br /> prongs on power tools; defective on/off switches; mushroomed heads <br /> of impact tools; sprung wrench jaws; missing or broken handles or <br /> guards; and wooden handles that are cracked, splintered, or loose. All <br /> equipment and tools will be used within their rated capacities and <br /> capabilities. <br /> Exposure Monitoring <br /> Air monitoring will be conducted to determine the presence of on-site <br /> hazardous conditions and to help determine the level of personal <br /> protection required for personnel. Environmental monitoring <br /> equipment includes a photoionization detector (PID) and/or a flame <br /> ionization detector (FID). Characterization with these instruments will <br /> determine the relative concentrations of total volatile hydrocarbons <br /> present and their concentrations in the workplace and will help assess <br /> worker safety. Guidelines for worker respiratory protection are <br /> presented in Table 3. <br /> Air monitoring will be conducted during all active field work. The <br /> intent is to utilize generic field instruments and action levels to assess <br /> the continuous exposure to field personnel during the investigation <br /> and to upgrade or downgrade personal protective equipment in <br /> response to the monitoring. The general monitoring shall consist of <br /> daily breathing zone monitoring every 30 minutes using the PID or <br /> FID. Daily calibration and maintenance of the direct reading <br /> equipment will also be recorded and performed according to the <br /> manufacturer's recommendations. All breathing zone readings will be <br /> recorded in the field log book or air monitoring form designed for that <br /> purpose. <br /> The HSO will establish daily background total organic vapor (TOV) <br /> levels prior to initiating site activities. Under most circumstances, this <br /> level can be determined by taking multiple readings at representative <br /> locations along the perimeter of the site and averaging the results of <br /> sustained measurements. <br /> Decisions to upgrade personal protection will be based on sustained <br /> breathing zone TOV that exceeds background levels. Breathing zone <br /> refers to the area from the top of the shoulders to the top of the head. <br /> Specific criteria for upgrading personal protection based on TOV is <br /> presented in the following table. <br /> 6-9 <br />