Laserfiche WebLink
1 <br /> 5. As the sampling rods are advanced, the soil core will be collected in a 1-7/8-inch diameter, 4- <br /> foot long sample barrel, which is attached to the end of the inner rods. After being advanced 4 <br /> feet, the inner rods will be removed from the borehole with a hydraulic winch. The sampler <br /> (containing new acetate liners) and inner rods will then be lowered back into the borehole to the <br /> ' previous depth and the rods are driven another 4 feet. This process will be repeated until the <br /> desired depth is reached. <br /> t6. The soil samples will be retained for lithologic logging and chemical analyses, if appropriate. <br /> 7. The soils will be classified in the field in approximate accordance with the visual-manual <br /> ' procedure of the Unified Soil Classification System (ASTM D-2488-93), and the Munsell Color <br /> Classification. <br /> ' 8. If required, soil samples will be collected at selected intervals for laboratory analysis. At these <br /> intervals, sample material will be transferred to laboratory supplied jars, and labeled. Labels will <br /> document the sample designation, type, date and time of collection, collector(s), location, and <br /> ' any additional information. <br /> 9. After sample collection, the boring will be grouted to ground surface with a neat cement grout <br /> (Type II Portland cement). <br /> CA Equipment Cleaning <br /> ' 1. Downhole equipment (rods, sampler) will be steam cleaned prior to each borehole. <br /> 2. Sampling equipment (sampler) will be steam cleaned or washed with a brush in a solution of <br /> ' high-purity phosphate-free soap and potable water, then rinsed with potable water followed by <br /> double rinsing with deionized water prior to each sampling run. <br /> ' 3. Downhole equipment and vehicles which warrant it, will be steam cleaned prior to leaving site at <br /> completion of sampling. <br /> ' C.5 Investigation-Derived Residuals <br /> Soil cuttings will be placed in labeled 55-gallon DOT-approved pails with bolt-on covers. Drums will <br /> ' be labeled according to client, date, content, and source. All residuals generated during sampling <br /> activities will be stored at the site. <br /> 1 <br /> ' Soil Investigation Work Plan, Stockton Railyard 2 <br /> g.ladminassfyobsQO031031177.16_union pacific-stockton yarrA09-reportsl9.09_reportslwork plan_soilbonnglappendiceslapp_cyushdrivesam.doc <br />