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IV. STATUS OF VARIOUS CLEANUP ACTIONS <br /> Drainage Channel Dredging t <br /> Mr. Beeman said that 5,575 tions,of`Class I hazardous.,materials have been removed, hauled off <br /> base, and disposed at Kettlemen landfill,primarily because they consisted of DDT greater than 1 <br /> part per million (ppm). The materials hauled to the Class I landfill also included a small amount <br /> of lead. Class I landfills accept hazardous wastes for disposal. Approximately 13,000 tons of <br /> contaminated Class II materials with at less than 1 ppm of DDT, but still at detectable levels, <br /> were hauled off site and disposed in a Class II landfill. Class II landfills accept contaminated <br /> material that does not have hazardous characteristics associated with it. Also,there were 256 tons <br /> of materials that had to be disposed in a Class III landfill, which accepts some level of petroleum <br /> hydrocarbon contamination. <br /> Mr. Beeman stated that there has been no confirmation sampling undertaken yet. Ms. Huey noted <br /> that the sampling is planned for the next fiscal year. Mr. Beeman said that the main plan is to <br /> install sediment traps, which will catch any of the sediment that continues to move down the <br /> drainage channels.Then the traps will be cleaned and the sediment disposed of off site. The <br /> strategy is to try to control the sediment buildup and maintain a continuous flow line, rather than <br /> have to sample and frequently dredge. He pointed out that during the tour,the group saw many <br /> of the drainage channels as they drove through the landfill area where the contractor had cleared <br /> the brush for the excavating equipment to access the channels. He complimented the contractor <br /> on the commendable excavation of the channels. <br /> Mr. Bentz asked if the recent fire at the western end of the island had caused problems by <br /> destroying the flags indicating previous monitoring sites. Mr. Beeman said that some of the pvc <br /> water-level measuring pipes have melted, but they can be easily replaced. He added that the <br /> steel-capped monitoring wells were not effected. <br /> Site 19 Soil/Debris Removal <br /> Mr. Beeman reported that CKY Construction,the contractor for the Site 19 Soil/Debris Removal <br /> action, will be moving into the office currently occupied by the dredge contractor. Site 19 is a <br /> group of soil and debris piles placed in the area since the 1950s. The piles were stored in the area <br /> for possible future use by the Navy. Since the piles of disposed asphalt, concrete chunks,wood, <br /> and soil have been there for nearly half a century,there is some question about the condition of <br /> the soil underneath the debris. The contractor will survey and remove the soil piles. Then the <br /> area will be resampled for any problems and regraded. Mr. Beeman stated that the objective is to <br /> ensure that the site is clean for the upcoming federal-to-federal transfer of the 55 acres to the <br /> Immigration and Naturalization Service (INS). <br /> Mr. Bentz asked about the large concrete covers he observed during the tour. Mr. Beeman said <br /> that these are concrete manhole covers for access to the vaults for operating the sewer pipeline <br /> valves. <br /> Cleanup of DDT-Contaminated Soil <br /> Ms. Huey stated that IT Corporation is currently treating DDT in the soil on site. Thus far,they <br /> 3 <br />