Laserfiche WebLink
Soil Sampling Protocol <br /> 1 . Sample Collection During Drilling Activities <br /> A proposal will be submitted to the lead Regulatory Authority <br /> with proposed boring/sampling locations. The exact location <br /> and number of borings at each site will be determined in the <br /> field by the Project Geologist/Engineer. <br /> Prior to arriving at the sample site, the drill rig/augers <br /> will be steam cleaned and all sample equipment will be <br /> cleaned. Cleaning will be conducted on-site on all sampling <br /> equipment between each sample interval. <br /> Soil samples will be obtained using a California modified <br /> split-spoon sampler containing three, six inch long, two inch <br /> diameter brass tubes. The sampler will be driven 18 inches <br /> ahead of the hollow stem auger by a 140 pound hammer with a <br /> 30 inch drop in accordance with American Society for Testing <br /> and Materials (ASTM) Methods D 1586-84 for split barrel <br /> sampling of soil and D 1587-83 for thin-walled tube sampling <br /> of soils. The blows required to drive the sampler each six <br /> inch interval will be recorded on the boring log. The <br /> sampler will be removed from the boring and opened to reveal <br /> the brass tubes . The bottom tube will be capped with <br /> aluminum foil and plastic end caps, taped and labeled with <br /> the following information: date, time, project ZD, sample <br /> ZD, name of sampler and type of analysis. This sample will <br /> be immediately placed into a cooler containing dry ice or <br /> frozen "blue ice" . A "high-low" temperature recording <br /> thermometer will accompany sample shipments to ensure proper <br /> temperature maintenance. The samples will be delivered to a <br /> state certified laboratory under chain-of-custody protocol <br /> within 48 hours of sampling, when ever possible. <br /> Soil in the uppermost brass tube will be described according <br /> to ASTM standard practice for description and identification <br /> Of soils (ASTM D-2488-84) . Stratigraphic, genetic and other <br /> data/interpretations will also be recorded. Soil properties <br /> also be noted in the middle brass tube and from the sampler <br /> shoe. Alternatively the second sample tube may be used with <br /> the uppermost tube for preparation of duplicates. These <br /> field observations will be noted on a log prepared for each <br /> boring/well. <br /> During sampling, latex gloves will be worn to prevent cross- <br /> contamination with other samples. The disposable gloves will <br /> be discarded after collecting samples from each 18-inch <br /> sample drive. <br />