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C <br /> The 8-inch pipe was removed so that the ditch could be excavated to the required <br /> depth. However, when the 8-inch pipe was cut from the 12-inch pipe, water from <br /> Cthe pipes began to flow into the excavation. The incoming water had a strong <br /> hydrocarbon odor and an oily sheen, so the 12-inch pipe was temporarily blocked and <br /> the excavation was lined with plastic to minimize impact from the oily water. <br /> Absorbent pads were used to absorb the oily sheen on top of the water in the <br /> excavation. Used pads were placed in a 55-gallon drum for storage. These pads <br /> I <br /> were later placed in plastic garbage bags and disposed of with the stockpiles at the <br /> I <br /> Altamont Landfill. <br /> A vacuum truck was brought on site to remove the water from the excavation, the <br /> I <br /> water and sludge from the storm drain, and the water used to flush the drain. This <br /> Cwater was taken to a licensed cogeneration plant in Oroville, California for disposal. <br /> After the removal of the water, the plastic liner was removed from the ditch and <br /> excavation of the visibly impacted soil was completed. <br /> C <br /> C <br /> C <br /> C <br /> I <br /> C <br /> � C <br /> C:\MAW\FMC\5042\FMCRM.DOC 2-2 <br /> CRINHYDRO-SEARCHAI A Tetra Tech Company <br /> i <br />