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FILE NO. 20-3978-01.WR6 h" KLEINFELDER <br /> FEBRUARY 24, 1997 <br /> 4.3 LABORATORY ANALYSIS <br /> Each of the soil samples selected for quantitative analysis were submitted under chain-of- <br /> custody control to Sequoia Analytical Laboratories (Sequoia) of Sacramento, California. <br /> Sequoia is certified by the California Department of Toxic Substances to perform the <br /> requested analyses. <br /> Up to two soil samples from each location were submitted for analysis. The samples were <br /> analyzed on a normal laboratory turnaround schedule, which required up to 10 working days <br /> for receipt of analytical data. The soil samples were analyzed as follows: <br /> • Total Threshold Limit Concentration (TTLC) CAM 17 Metals by EPA <br /> Methods <br /> • Soluble Threshold Limit Concentration (STLC) CAM 17 Metals by EPA <br /> Methods (for selected metals only) <br /> • Total Extractable Petroleum Hydrocarbons as Referenced to Diesel and <br /> Lubricating Oil by EPA Method 3550 and LUFT Method <br /> • Organochlorine Pesticides and PCBs by EPA Method 8080 <br /> • Chlorinated Herbicides by EPA Method 8150 <br /> • Semi-Volatile Organics by GC/MS by EPA Method 8270, including <br /> Tentatively Identified Compounds (TICS) <br /> The samples were analyzed on a normal laboratory turnaround schedule, which required up to <br /> 10 working days for receipt of analytical data. <br /> 10-3978-01.WR6/207RE074.doc Page 10 of 17 01997, Kleinfelder, Inc. <br />