Laserfiche WebLink
Oscreptbac Page 13 <br /> personnel and equipment were demobed from the site . This <br /> completed the EPA-funded removal action. The State-funded <br /> remedial action was scheduled to commence in October, 1996 . <br /> October 4 , 1996 <br /> CIWMB submitted a draft remediation design and workplan <br /> (appendix 1) . The workplan was subsequently approved by EPA. <br /> October 17 - October 21, 1996 <br /> The CIWMB and their contractors mobilized to the site . Heavy <br /> earth moving equipment included DC-9 and DC-11 catepillar dozers <br /> and several water tenders . They set up a command post trailer, a <br /> decontamination site and prepared the roads for site action. <br /> October 22 - October 26 , 1996 <br /> O/S Personnel : 1-CIWMB, 4-Sukut Construction, 1-S . P. <br /> Environmental Industrial Hygienst <br /> The contractors began moving and consolidating the ash <br /> residue from the top and the sides of the canyon to the bottom of <br /> the canyon. Water tenders were used to suppress dust emissions . <br /> October 28 - November 2 , 1996 <br /> The consolidation of ash residue from the tops and sides of <br /> the canyon continued until a rain storm halted the work. <br /> November 4 - November 9, 1996 <br /> The amount of contaminated ash and soil had exceeded the <br /> original estimates . It was estimated that an additional week of <br /> work would be needed to properly clean the slopes and to move and <br /> consolidate the material from the bottom of the canyon to the <br /> upper end. Cleanup confirmation samples were collected from the <br /> completed areas of the canyon and submitted for laboratory <br /> analysis . <br /> November 11 - November 16, 1996 <br /> Movement and consolidation of contaminated ash residue and <br /> soil by the State contractors from the sides and bottom of the <br /> canyon continued through the week. START arrived on site to <br /> assist the State in the collection and analysis of cleanup <br /> confirmation samples . The sampling was conducted on an <br /> approximate 200 foot grid over areas where burn ash had been <br /> scraped away from the slopes and the base of the lower canyon. <br /> The samples were analyzed by START using the field portable X-Ray <br /> Fluorescence Spectrometer (XRF) . Both field screening and <br /> laboratory analysis indicated zinc levels at close to background. <br />