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Mr. Becker(DTSC) and Lt. Vielhauer(DFG) <br /> Page 4 of 5 <br /> contamination we propose to excavate and dispose of the material. Subsequent to the initial <br /> removal action, we will collect confirmation soil samples and, if necessary, conduct a program of <br /> additional sampling designed to characterize the nature and extent of any residual contamination. <br /> Based on the results of the soil sampling additional remedial measures will be proposed as <br /> appropriate. <br /> Phase I—Initial Soil Removal <br /> OSHA Hazwoper-trained personnel will remove the contaminated surface soil from the <br /> impacted area. The dimensions of the proposed excavation are approximately 220 feet by 6-8 � .{ <br /> ng to the location of samplet121 E/3 )on the <br /> feet, encompassing the entire work area and extendi , <br /> the depth of excavation will be approximately k p <br /> east. Based upon the baseline soil analytical data, A <br /> 3 inches. The volume of soil to be removed is estimated to be approximately 400 cubic feet or <br /> approximately 20 tons. A backhoe or bobcat loader will be used for the majority of the <br /> removal. Some manual removal is also anticipated. The excavation will be sprinkled with , <br /> small amounts of water as necessary to control dust. To prevent ant side excavatedhe the work area <br /> om <br /> impacting the face of the levee, a silt barrier will be erected on theso <br /> prior to soil removal. This excavation should have no impact on the levee Gme Notification of Lake or St eambed Altera ,.consequently a Department of Fish & a <br /> ("Section 1603 Application")is not believed to be necessary. <br /> Depending P <br /> upon landfill acceptance requirements, the soil will either be directly loaded in a <br /> truck for immediate transport to the landfill or will be placed in a covered, 20-cubic yard <br /> capacity rolloff bin pending disposal. The bin will be labeled as hazardous waste and will be <br /> removed as soon as possible,but in no case more than 90 days from generation of the hazardous <br /> waste. <br /> It is currently anticipated that the soil will be transported under hazardous waste manifest to ,_u7 <br /> Waste Management's Class I facility in Kettleman City for disposal. N k <br /> • Confirmation soil samples will be collected from at least seven locations from the floor of the <br /> excavated area. The samples will be submitted to GeoAnalytical for the analysis of tobA <br /> tal <br /> ti <br /> co e'r1 _ <br /> • A technical report will be prepare and submitted to the interested agencies describing the <br /> results of the excavation and confirmation soil sampling. <br /> Phase II—Additional Soil Characterization and Final Remedy Evaluation <br /> Following the completion of the initial excavation and depending upon the confirmation sampling <br /> ay be necessary to characterize the nature and extent ns <br /> any <br /> results, additional investigation m <br /> and <br /> residual soil contamination. Thus <br /> information will be used to evaluate final remedial options <br /> \\GZA FS\VOL_I\DATA\GROUNDZE\MARINA\REPORTS\Workplan.doc <br />