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PANOCHE BURN SITE REMEDIATION On November 6, 1996, six additional confirmation soil samples (CSS-5 through CSS-10) were collected along the south side slope of the canyon and in the canyon bottom. CSS-5 through CSS-7 were analyzed for pH and total zinc, while CSS-8 through CSS-10 were analyzed for CAM-17 metals and pH. On November 8, 1996, two confirmation samples (CSS-11 and CSS-12) on the north side slope were collected where the stained area had been removed. These samples were analyzed for TRPH and CAM-17 metals. On November 12, 1996, the U.S. EPA collected 23 confirmation soil samples for X-Ray Fluorescence Spectrometer (XRF) analysis from both sides of the canyon as well as from the bottom of the canyon. Appendix I contains the U.S. EPA's XRF results. The CIWMB col- lected six split samples (PF-SO-4, PF-SO-9, PF-SO-11, PF-SO-16, PF-SO-18, and PF-SO- 23) from the U.S. EPA XRF locations and analyzed the samples for TRPH and CAM-17 metals. 3.4.2.3 Pyrolytic Oil Samples While constructing the retention basin, a small oil-stained area appeared on the surface. One sample (GIS-1) was collected on November 13, 1996, and sent to the laboratory for a general information analysis. GIS-1 was analyzed for: ➢ CAM-5 Metals, TTLC, EPA Method 601017471 ➢ Benzene, Toluene, Ethylbenzene, and Xylenes (BTEX),EPA Method 8020 ➢ TRPH-Motor Oil, EPA Method 418.1 ➢ Organochlorine Pesticides,EPA Method 8080 ➢ Polychlorinated Biphenyls (PCBs), EPA Method 8080 ➢ Volatile Organics, EPA Method 8240 ➢ Semi-Volatile Organics, EPA Method 8270 By November 20, 1996, the oil was observed in a distinct gravel lens 30 to 40 feet below the original surface. The CIWMB and CH2M HILL engineers collected two additional samples (GIS-2 and GIS-3) of the oil seeping out of the gravel lens along the sides of the north can- yon. These samples were analyzed for the same methods as GIS-1, except they were not analyzed for organochlorine pesticides and PCBs and were analyzed for dioxins and furans. 3.4.2.4 Retention Water Sample After several severe storms, runoff water had reached within 2 to 3 inches of the spillway elevation. The CIWMB engineer anticipated the retention water would be discharged to the Little Panoche Creek if the rain continued. To ascertain a quick assessment of the surface water before release, a water sample was collected on January 8, 1997. The water was analyzed for: ➢ CAM-17 Metals, EPA Method 6010/7470, ➢ TRPH, EPA Method 418.1 ➢ Hardness by Calculation, EPA Method 2340B ➢ General Minerals/Metals, EPA Method 6010 ➢ Methylene Blue Active Substances (MBAS), EPA Method 425.1 ➢ Alkalinity, EPA Method 310.1 CIWMB 26