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' • If OVA readings for a particular work area consistently exceed 5 parts per million (ppm) above background, then sampling will cease and personnel will withdraw from the work area. ' • If concentrations persist above 5 ppm, then Level C protection will be required if work is to continue. ' • If OVA readings exceed 10 ppm in the breathing zone while workers are in Level C protection, then work will cease and the source of the emission will be determined and ' eliminated before work continues. • Periodic measurements of the area will be taken before re-entry to ensure LEL has been reduced to safe working levels. 7.2.2 Noise Field personnel will initially monitor noise levels associated with equipment and machinery with a direct reading portable noise level monitor, unless based on experience it is known that hearing protection is not necessary. Readings will be taken within the normal worker hearing ' zone. If maximum noise levels exceed 85 decibels at any time during Site operations, hearing protection will be worn. ' 7.3 Site Control Work zones will not be established for Level D activities. Individuals not directly involved in ' ongoing work will be requested to stay at least 50 feet away from Level D activities. 7.4 Decontamination For activities requiring Level D protection and modified Level C protection without established work zones, it is unlikely that major decontamination will be necessary. At the conclusion of ' each day, disposable gloves and coveralls will be removed and disposed of in onsite containers. If full Level C protection is required, minimum decontamination procedures associated with Level C protection will be followed and established within the Contamination Reduction Zone. These procedures are presented in Table 4. ' 7.5 Training Kennedy/Jenks personnel participating in field activities will have completed the Hazardous Waste Operations and Emergency Response 40-hour health and safety training course (29 CFR 1910.120) or have equivalent training, and have undergone annual eight-hour refresher training. Kennedy/Jenks personnel will have also completed Contractor Orientation for Union Pacific Railroad. Training requirements are discussed in Kennedy/Jenks' Corporate Health and Safety Program. Prior to each day of work, a meeting will be held at the Site to familiarize personnel with health and safety issues, protective equipment, emergency information and supplies, and to discuss special topics. Health and Safety Plan Page 10 ' Union Pacific Railroad Company, Stockton Railyard Site, Stockton, California g:Iadminassoobs120031032777.16_union pacific-stockton yard109-reports19.09 reports12005_hasplhasp.doc