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Upon retrieval, the sampler is disassembled into its component parts. One or ' more of the liners is selected for chemical analysis. The ends of the selected liner(s) are sealed with aluminum foil or teflon tape, capped with plastic caps, ' labeled, logged on chain-of-custody forms and stored in a chilled ice chest for preservation in the field and during transport to the analytical laboratory. All labels are pre-written to the extent possible with indelible ink to minimize ' handling time. 5) Samples not sealed for chemical analysis are checked for the presence of ' contamination in the field by the geologist. Any discoloration or odor is noted on the boring log. Each sample is classified in the field by a geologist using the Unified Soil Classification System. In addition, samples may also be ' field-screened with a photoionization detector (calibrated daily) or organic vapor meter. In either case, the instrument probe is held adjacent to freshly ' crumbled soil and the stabilized reading value is recorded on the log. Values of volatile vapors measured in the field are reconnaissance only and are not meant to supplant chemical analysis in a certified laboratory. Other visual ' screening techniques include examination of the sample under hand-lens magnification as-well-as floating sheen inspection resulting from immersion in water. Lithology logging will collect geologic data as required, using conventional geologic and hydrogeologic terminology. When rock is logged, a GSA Rock ' Color Chart and appropriate terminology will be employed to describe rock, fractures, bedding, etc. Soil or rock coring may be specified by the ' supervising geologist on a project-specific basis. 6) Samples are held in the possession of RESNA personnel until transferred to ' the analytical laboratory. Transfer to the laboratory is accomplished with either delivery by RESNA personnel, pick-up by laboratory personnel, or transfer by a personal delivery service. Each transfer of responsibility is recorded on a chain-of-custody record that accompanies the samples. 7) Conditions occasionally arise when other drilling equipment are used given ' site-specific formation conditions. Rotary drilling may be selected if coring or bearing conditions arise. Rotary or casing hammer may be used as deep ' drilling, flowing sands, or formation-specific conditions require. 8) When drilling though an aquifer known to be contaminated, a staged drilling approach will be used. This would involve using either a temporary or RESNA INDUSTRIES, INC. Soil Sampling Protocol Latest Revision: October 23, 1991