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i� <br /> i <br /> �. Waterwotk <br /> Soil g2,m lin Protocol <br /> Sample Collection During Drilling Activities <br /> A proposal will be submitted to the Public Health Division of <br /> the County Health Department with proposed baring/sampling <br /> locations. The exact location and number of borings at each <br /> site will be determined in the field by the Project <br /> Geologist/Engineer. <br /> 3 <br /> Prior to arriving at the sample site, the drill rig/augers <br /> will be steam cleaned and all sample equipment will be washed } <br /> with laboratory grade detergent and rinsed twice with tap ' <br /> water and ante with deionized water. This procedure will be Y <br /> conducted on-site on all sampling equipment between each <br /> - 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 /> W 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 TD, sample <br /> #• ID, name of sampler and typa 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 /> 1 within 48 hours of sampling, when possible. <br /> Soil in the uppermost brass tube will .be described for <br /> texture, color, consistency, moisture content, presence of <br /> contamination and any other distingui3hing characteristics. <br /> Soil properties will also be noted in the middle brass tube <br /> and from the sampler shoe. Alternatively the second sample <br /> tube may be used with the uppermost tube for preparation of <br /> duplicates. These field observations will be noted on a log <br /> i <br /> prepared for each baring/well. <br /> i <br /> EWE I <br />