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Ii <br /> SOIL SAMPLING PROTOCOL <br /> M <br /> r I. SOIL SAMPLING BY DRILLING RIG ' <br /> 1) Review-site�p'r pp for boring locations an(.,. special instructzons.-Confi.rm <br /> boring locations in fief--witlrtlient: Have Und rground Service Alert {USA) <br /> mark utilities in area prior to drilling. <br /> 2) Prior to initiating an exploratory boring, all equipment,to be used during ing.-- i <br /> and sampling operation is steam cleaned. Such!Lequioment includes_,_but:is-net-. <br /> rod sam -lets and brass sampler liners. <br /> limited to, augers, bits, drilling p P <br /> Additionally, between sampling intervals, the sampler is thoroughly cleaned with <br /> , <br /> M <br /> a dilute trisodium phosphate solution and rinsed'with clean tap water or distilled <br /> water. i <br /> � <br /> 3) Each exploratoryboring is drilled-with-a-truck-mounted drilling rig using either <br /> solid flight or hollow stem augers. The boring isiladva cedto <br /> the desired <br /> sampling depth and the sampler is lowered to the bottom of the hole---The <br /> sampler is driven a maximum of 18 inches into the undisturbed soils ahead of the <br /> auger by a 140-pound, rig-operated hammer falling 30 inches. The number of <br /> f blows required to drive the sampler the final 12 inches is recorded on the boring <br /> log. When necessary, the sampler may be pushed by ihe drill rig hydraulics. In <br /> e the pressure exerted in pounds r care inch) is recorded. After the <br /> . flus case, pre { Po per �; , <br /> sampler has penetrated the full depth, it is retrieved to the surface. i <br /> ifornia modified sampler 3 inch or <br /> are either a Cal { <br />� 4 The samplers commonly used P <br /> P y :p <br /> 2 �neh O.D. . The standard <br /> D or a standard penetrometer ) <br /> 2.5 inch O. .) pe { , <br /> penetrometer does not contain sample liners and is used to determine soil strength <br /> characteristics and visually characterize the subsurface materials. If samples are <br /> collected for laboratory analysis the California modified sampler, equipped with <br /> brass liners, is used except when the analysis will include copper or zinc. In this <br /> instance, the sample should be taken with the standard penetrometer and placed in <br /> a labeled plastic bag, <br /> it it <br /> Upon retrieval, the sampler is disassembled into its ;component parts. One or <br /> ,. <br /> more of the liners is selected for chemical analysis.:,' The ends of the selected <br /> liner(s) are sealed with aluminum foil or teffon'tape,napped with plastic caps, <br /> EXCELTECH, INC. <br /> Soil Sampling Protocol r <br /> Latest Revision: March 28, 1990 <br />