Laserfiche WebLink
`%MWI fie/ <br /> an <br /> GEOMATRIX <br /> s <br /> using the hollow stem auger generally do not require the use of drilling fluid. If required, <br /> potable water from a municipal supply will be used to maintain boring stability. <br /> The specific depth of each soil boring will be determined by the Geomatrix project manager <br /> before drilling. The Geomatrix field geologist/engineer will specify to the drill rig operator <br /> the depth of soil sample collection, method of sample retrieval, and other matters pertaining <br /> to the satisfactory completion of the borings. Drill cuttings, unused soil samples, and <br /> b„ drilling fluids generated during drilling of soil borings will be stored for future disposal by <br /> the client in accordance with legal requirements. <br /> The drill rods, augers, hoses, drive samplers, bits, and other components which fluids and <br /> •• cuttings contact will be thoroughly steam cleaned on-site before drilling each boring, <br /> including at the beginning of each project and at the completion of field activities. Only <br /> potable water from a municipal supply will be used for decontamination of drilling <br /> equipment. All decontamination rinsate will be collected and stored for future disposal by <br /> the client in accordance with legal requirements. <br /> 3.0 SAMPLING AND LOGGING <br /> 3.1 OBTAINING SAMPLES <br /> Borings will be continuously cored, or sampled at depth intervals specified by the project <br /> �. manager based on the intended use of the boring. Samples and/or cuttings will be obtained <br /> for logging purposes at least every five feet for all borings. Drive samples will be used to <br /> log hollow stem borings, if continuous core is not collected. The samples and/or drill <br /> cuttings will be collected and described. A lithologic log of these samples will be made. <br /> Grain-size (sieve) analyses may be performed on selected samples in potential well <br /> completion zones and in other zones. These analyses will be summarized on standard <br /> grain-size analysis sheets. Other physical testing may also be performed on soil samples to <br /> DRILLING AND DESTRUCTION OF SOIL BORINGS <br /> .r %WGEOMATRX.PRO REVISION DATE: NOVEMBER 1992 Page 2 of 6 <br /> iy <br />