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LFR Levine-Fricke • Co-located samples will be labeled identical to the primary sample with a "repeated sample depth" at the end of the sample label. For example: the co-located sample collected from Burn Pile-28, the third sampling location, taken from the 6-inch interval would be named: "BP28-03-0606." • Equipment blank samples (needed on days that reusable sampling equipment is used)will be labeled as "EB-and the current date." For example, the equipment blank collected on July 15, 2003 would be labeled: "EB-7-15-03." 7.4.3 Decontamination Procedures It is anticipated that the majority of samples will be collected using disposable, one- time-use equipment; therefore, decontamination of sampling equipment will not be necessary. However, if reusable equipment is necessary for sampling, equipment will be decontaminated using clean water and a mild soap detergent such as LiquinoxTM followed by a clean water rinse prior to and after collection of a sample. If a backhoe is used, it will be dry decontaminated with a clean brush between samples unless pyrolytic oil is encountered. If pyrolytic oil is encountered, the backhoe will be steam cleaned between sampling locations and, at a minimum, at the end of each day. All decontamination liquids will be contained within a 55-gallon drum or within a bermed and lined decontamination pad constructed by the remediation contractor. 7.4.4 Quality Assurance/Quality Control Quality assurance/quality control (QA/QC) samples will be collected according to the data validation and quality control procedures presented in Appendix G. Generally, one co-located sample will be collected for every 10 samples collected(i.e., 10 percent), and one equipment blank will be collected each day, if reusable equipment is used, to verify that decontamination procedures are sufficient. The equipment blank water sample will be collected into a non-preserved, polyethylene, 0.5-liter bottle by pouring clean water(provided by the laboratory)over the reused equipment that contacted soil. The equipment blank will be analyzed for the same parameters as the regular samples. 7.4.5 Analytical Methods and Characterization Criteria All soil samples will be analyzed by a California state-certified environmental laboratory for CAM-17 metals which are: Antimony(Sb), Arsenic(As), Barium(Ba), Beryllium(Be), Cadmium(Cd), Chromium(Cr), Cobalt(Co), Copper(Cu), Lead (Pb), Mercury (Hg), Molybdenum(Mo), Nickel(Ni), Selenium(Se), Silver(Ag), Thallium(Tl), Vanadium(V) and Zinc(Zn)by EPA Method 6010, or as appropriate. Soil samples visibly affected with pyrolytic oil, or collected from areas directly beneath locations where pyrolytic oil had been observed and removed, will be analyzed for SVOCs by EPA Method 8270 and VOCs by EPA Method 8260 in addition to CAM-17 metals. Final_RAP_Tracy_9.18.03(final).doc Page 37