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PANOCHE BURN SITE REMEDIATION <br /> J% <br /> L_ <br /> 1.0' MIN VEGETATIVE I-AYER <br /> S oz. FILT=R <br /> T— GEOTEXTILE <br /> 2.0' MIN BARRIER LA <br /> ------(CLAY)— -- <br /> 1.5' MIN FOUNDATIO <br /> 2.0 MIN CONTAMINATE:, SOIL <br /> LBURN ASH <br /> TOP DECK COVER SYSTEM <br /> 1.0' MIN <br /> 2.0' VEGETATIVE LAYER <br /> BARRIER LA E'ER <br /> 1.0' MIN (CLAY) <br /> FOUND <br /> OUN pA rCN <br /> LA YER <br /> I CCN TaVINATED SOIL A -- _ 60 N�p BURN ASH MEMBRANE <br /> SLOPE COVER SYSTEM <br /> Figure 8. Cover Designs for the Top Deck and Slope Covers <br /> 3.4 Site Assessment <br /> Based on the previous U.S. EPA samples, the CIWMB elected to further delineate the nature <br /> and extent of the zinc contamination at the site and determine if the soils beneath the site <br /> contained pyrolytic oil. The U.S. EPA laboratory results from the May 28, 1997, sampling <br /> indicated the ash contained high levels of zinc and petroleum hydrocarbons. Because research <br /> is limited on the environmental and health effects from a large tire fire, the CIWMB used an <br /> aggressive sampling program during the project to better understand and identify the <br /> chemical hazards at the site. <br /> CIWMB 22 <br />