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Union Ice Company `l7nion Street, Stockton low <br /> Re-excavation Work Plan & Installation of Additional Monitoring Wells <br /> Page 4 <br /> Union Ice building and the fence (property line). There is also a high pressure fuel line <br /> approximately 10 feet west of the fence. <br /> These obstacles could limit the size of the excavation. An excavator will be used for <br /> the excavation. The approximate depth of the excavation will be 25 feet (Figure b). It <br /> is estimated that approximately 425 cubic yards of soil will be removed. <br /> The overburden will be stockpiled at the southwest end of the property. This stockpile <br /> will be sampled and, if clean, will be used to backfill the excavation. If the results are <br /> over 50 ppm, then an aeration permit will be taken out from the Air Pollution Control <br /> District. <br /> The wells and bottom of the excavation will be sampled and sent to GeoMonitor <br /> Laboratories of Hesperia, California, which is a State certified laboratory. A PID <br /> (photoioni.zation detector) will be present on site during the drilling activities to monitor <br /> the air around the excavation, along with the samples taken from the excavation. <br />