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greater than 1 ppm of total organic vapors wili require upgrade to Level C protection. <br />Total Organic Vapors: <br />Benzene: <br />Instrument(s) used: <br />Reading Location Time <br />Calibrate date, time, and method : <br />1.5 Site Layout Plan and Decontamination Procedures <br />Work Areas and Zones <br />Active work areas will be delineated by caution tape as long as work is proceeding under Level <br />D and no suspected hazardous wastes are encountered during excavation activities. If <br />protection is upgraded to Level C, an exclusion zone will be set up within the work area, and <br />a contamination reduction zone (decontamination area) will be established at the boundary of <br />the exclusion zone. <br />Decontamination Area <br />The decontamination procedures will provide an organized process by which levels of <br />contamination will be reduced. The decontamination procedures will be performed in a <br />specific sequence at separate stations. Stations will be arranged in order of decreasing <br />contamination. A description of the work to be performed at each station is as follows: <br />1. Equipment Drop: Deposit equipment used on site (e.g., tools, sample <br />containers, monitoring instruments, clipboards, etc.) on plastic (visqueen) drop <br />cloths. If temperatures are high, a cool-down area may be part of this station. <br />If equipment is not to be re-used at the site, it will be thoroughly <br />decontaminated by washing and rinsing in separate tubs. <br />7 <br />