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PANOCHE BURN SITE REMEDIATION <br /> 3.4.3.2 Confirmation Samples <br /> The CAM-17 TTLC analysis indicated that all of the confirmation soil samples except CSS-7 <br /> and CSS-9 were within background range. CSS-7 contained zinc at a concentration of <br /> 564 mg/kg and CSS-9 was 270 mg/kg. Total hydrocarbons in CSS-1 through CSS-4, CSS- <br /> 1 land CSS-12 ranged from non-detect to 2,800 mg/kg. The pH in CSS-5 through CSS-10 <br /> varied from 7.8 to 8.4. No halogenated volatile organics, per EPA Method 8010, were <br /> detected. <br /> Metal analysis (CAM-17) of split samples PF- SO-4, PF-SO-9, PF-SO-11, PF-SO-16, PF- <br /> SO-18, and PF-SO-23 revealed that all metals were in background ranges, except PF-SO-11, <br /> which had a zinc concentration of 176 mg/kg and lead of 41 mg/kg. The U.S. EPA's XRF <br /> analysis of the 23 confirmation samples detected zinc from 7.79 to 357.09 (PF-11) parts per <br /> million. No hydrocarbons, per EPA Method 418.1, were detected in the samples. <br /> 3.4.3.3 Pyrolytic Oil Samples <br /> The CAM-5 Metals (Cd, Cr, Pb, Ni, and Zn)TTLC analysis indicated that all the pyrolytic oil <br /> samples (GIS-1 through GIS-3) were in the background ranges. Total hydrocarbons in GIS-1, <br /> GIS-2, and GIS-3 were 18,000, 54,000, and 73,000 mg/kg, respectively. Based on EPA <br /> Method 8080, no organochlorine pesticides or PCBs were detected in GIS-1. Benzene, <br /> toluene, ethylbenzene, and xylenes were detected at 1.1 to 140 mg/kg in the pyrolytic oil <br /> samples. <br /> As shown in Table 4, the volatile organics analysis in GIS-2 and GIS-3 revealed five <br /> chemicals at the parts per billion range. <br /> TABLE 4 <br /> Detected Volatile Organics in the Oil <br /> Sample(Date) <br /> GIS-1 GIS-2 GIS-3 <br /> EPA Method 8240 (11/13/96) (11/20/96) (11/20/96) <br /> Ethyl benzene ND 530,000 91,000 <br /> Styrene ND 14,000 20,000 <br /> Toluene ND 63,000 84,000 <br /> Meta/para-xylenes ND 41,000 53,000 <br /> Ortho-xylenes ND 14,000 19,000 <br /> Note: All units in Ng/kg. <br /> ND=None detected. <br /> The semi-volatile organic analysis revealed a number of chemicals at the parts per billion <br /> range. Table 5 summarizes the detected semi-volatile organics. <br /> CIWMB 28 <br />