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4 . List of Known Chemical Contaminants: <br /> Contaminant** Source Medium Anticipated Max <br /> Concentrations <br /> Total Pet Hydro gasoline water <10 ppm <br /> Aromatics gasoline :water <100 ppb benzene <br /> 5. List of Known Physical Hazards (ie. heavy traffic areas, <br /> overhead construction areas, work around excavations, work inside <br /> buidings, etc. ) <br /> Hazard Description Location Procedures to <br /> Reduce Hazard <br /> Traffic autos/trucks near loading signs, flagman <br /> ureas <br /> utilities water, gas, etc USA marked,coord <br /> w/ facility <br /> lifting/drop augers, sampler proper lifting, <br /> hard hats <br /> boots <br /> drilling borings to all wells gloves, open <br /> sampling water barrel w/ care <br /> heat stress all wells monitor signs <br /> water on rig <br /> breaks on hot <br /> days <br /> h 6. Planned Site Activities (Be specific, identify personnel per <br /> task and include expected start date of activities. ) <br /> Installation of 3 , 55 feet deep, 2 inch diameter groundwater <br /> monitoring wells. Perforations between 30 and 50 feet with pvc <br /> perforated and pvc solid casing. All locations located in or <br /> just off traveled way. Although traffic is light in all <br /> locations, warning signs will be posted and care should be <br /> exercised to watch for traffic. <br /> Advancement of two to three soil borings to less than 35 feet <br /> in depth. Continous, MOSS sampling throughout. Split spoon <br /> samples to be obtained at 5 foot vertical intervals. Soil <br /> samples to be screened for volatiles with p. i.d. ! <br /> I <br /> I� <br /> ! <br />