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..,sC. -r i_:Y+�"'1 ;� rr-=.-. '�-ti.,,r r-;v:.:-► .+�^f-'rL....�-�'i¢y.=.�iie�a.-.-.'•-.i. -a,i1.r• -41t 4-'rA-nw-�i.r?^�.;t.."► ^"�,%.�^ate'' <br /> _ r- '-s ria• - � <br /> REMOVAL, TRANSPORT AND DISPOSAL OF CONTAMINATED SOIL <br /> If soil contamination is encountered, excavation of visible <br /> contamination will commence. A photoionization detector (PID) <br /> will be used to define the extent of contamination of volatile <br /> components. However, it is anticipated that the contamination <br /> will have very few volatiles and visual observation will be used <br /> to supplement the PID meter. Laboratory verification samples <br /> will be collected and analyzed. when limits of contamination are thought to be reached. <br /> Excavated soils will be laced onto vis <br /> P queen in a soil <br /> staging area for subsequent off--site removal. Soils will be <br /> f;a loaded into hazardous waste licensed dump trucks by use of a <br /> track loader for transport. Disposal of the soil will beat <br /> PWI 's disposal facility located in Buttonwillow, California. All <br /> -� materials disposed of as hazardous waste will be shipped under <br /> hazardous waste manifest. <br /> i <br /> BACKFILLING AND COMPACTION <br /> Upon completion of tank removal and/or required remedial <br /> activities, OHM will proceed with backfilling of the excavation. <br /> Stockpiled clean soil. will be placed back into the excavation <br /> initially. The remaining excavation will be backfilled with. <br /> select import fill placed and compacted in 1-foot lifts. <br /> Compaction will be provided to 90% relative compaction based <br /> ' upon visual and deflection yield measurements. <br /> SITE RESTORATION AND DEMOBILIZATION <br /> ' Once removal of all staged metal and/or contaminated soils <br /> have been completed, OHM crews will proceed with restoration of <br /> the site. These activities will include removal of generated <br /> debris, security fencing, and a rough grading of the site. <br /> Affected utility lines will be restored to their original <br /> condition and any temporary lines installed for the project will <br /> ' be removed. <br /> Decontamination stations will be removed and staging area <br /> pads will be graded to match the existing surroundings surface. <br /> OvtLaDHM equipment will then be decontaminated and removed from the <br /> site along with the office/decon trailer. <br /> ' Upon completion of restoration/demobilization activities, . <br /> OHM will provide SJCEHD with a letter report describing the field <br /> activities performed. This report will include all laboratory <br /> analyses, disposal certifications, and bills of lading/hazardous <br /> waste manifests associated with disposal of petroleum products, <br /> contamination soils and/or tank cleaning rinsate. <br /> ' 256 <br />