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1• Using a clean tool, dig a hole to expose fresh soil in a backhoe bucket or <br /> stockpile, or separate the brass liners from a driven sample. <br /> 2• Insert the probe of the OVM into the hole, taking care not to clog the probe <br /> with soil. Alternatively, headspace readings may be taken by placing soil in a <br /> covered (e.g., aluminum foil or Teflon sheet) clear glass jar or plastic <br /> resealable bag, and after several minutes have elapsed, introducing the probe <br /> into the headspace area. No soil sample used for headspace screening will be <br /> submitted to the laboratory for chemical analysis, <br /> 3. Record the results in ppm for PIDs and FIDs, and in percent of the lower <br /> explosive limit for LELs. <br /> 4. Ensure that the instrument returns to a zero measurement before the next <br /> reading. If necessary, move to an area without measurable organic vapors to <br /> zero-out the instrument. <br /> 6.0 EQUIPMENT CLEANING <br /> The sampler, brass or stainless steel liners, spatula, and tools used in assembly and <br /> disassembly of the soil sampler will be cleaned before and after each use. All soil will be <br /> removed from the tools and parts, and the tools will be steam-cleaned or washed in laboratory- <br /> grade detergent water with a brush, followed by rinsing in potable water. Decontamination <br /> rinsate will be collected and stored properly for future disposal by the client unless other <br /> arrangements have been made. <br /> Attachments: Table: Water and Soil Analytical Methods and Sample Handling <br /> Figures: Daily Field Record <br /> Boring Log <br /> Well Log <br /> Chain-of-Custody Record <br /> Sample Cowol Log Sheet <br /> SOM SAMPLING FOR CHEMICAL ANALYSIS <br /> MSCIPROTOSS.TXT Page 6 of 6 <br /> REVLSION DATE:MARCH 1996 SS-6 <br />