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A - - <br /> immediate vicinity of heavy equipment will wear hard hats, steel toe <br /> " work boots, and hearing protection, if necessary. <br /> Worker exposure to potentially unstable excavations will be mitigated <br /> by preventing worker entry into any and all pits. All excavations <br /> deeper than four feet must be properly shored and trenched in <br /> € accordance with OSHA 29 CFR 1926.650-653. Soil sampling will be <br /> conducted via the use of a backhoe; soil samples (from beneath the <br /> tanks) will be collected in the backhoe bucket. The samples will then <br /> be obtained directly from the backhoe bucket. <br /> a Traffic safety will consist of placing traffic cones around the work <br /> area. If appropriate, field vehicles will also be positioned to protect <br /> F the immediate work zone. <br /> If field work is performed during warm weather, air temperatures <br /> r will be monitored during work activities. Workers will be instructed <br /> to be alert for signs and symptoms of heat stress. Frequent rest <br /> periods will be taken in a shady location. During rest periods, <br /> 5 workers will be instructed to drink plenty of fluids. <br /> t ChemicalHazards <br /> ..�4 <br /> Exposure to petroleum products liquids and/or vapors are anticipated <br /> to be low. Prior to excavation the tanks will be emptied of residual <br /> product. Vapors remaining in the tanks will be inerted by the <br /> addition of an appropriate quantity of dry ice and monitored through <br /> the use of an explosimeter and/or oxygen level meter. <br /> i Worker protection for petroleum vapors will consist of Level D at the <br /> start of field work. This protection level will include the use of nitrile <br /> gloves, chemical-resistant overboots, as well as frequent monitoring <br /> with an organic vapor monitor and benzene sensitive Colorimetric <br /> =_r Indicator Tubes. Half-face respirators will be readily available near- <br /> by. If conditions warrant, the level of protection will be upgraded to <br /> Level C which will include, at a minimum, protective clothing and a <br /> half-face air-purifying, canister-equipped respirator. Table 4-1 <br /> shows the action levels and appropriate personal protective <br /> equipment for all tank removal and sampling activities. <br /> Training <br /> A well-equipped First Aid Kit will be available at all times on site for <br /> minor injuries. All ERM-West field personnel are trained in the use <br /> of the First Aid Kit, and have completed the 40-hour course in Health <br /> 42 <br />