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i. <br /> WaterWork <br /> Soil Sampling Protocol <br /> A proposal will be submitted to the Public Health Division of the <br /> County Health Department with proposed boring/sampling locations. <br /> �,. The exact location and number of borings at each site will be <br /> determined in the field by the Project Geologist. <br /> Prior to arriving at the sample site, the drill rig/augers will <br /> be steam cleaned and sample equipment will be washed with <br /> laboratory grade detergent and rinsed twice with tap water and <br /> once with deionized water. This procedure will be conducted on <br /> +� site on all sampling equipment between each sample interval. <br /> Soil samples will be obtained using a California modified split- <br /> spoon sampler containing three, six inch long, two inch diameter <br /> brass tubes. The sampler will be driven 18 inches ahead of the <br /> hollow stem auger by a 140 pound hammer with a 30 inch drop in <br /> accordance with American Society for Testing and Materials (ASTM) <br /> Methods D 1586-84 for split barrel sampling of soil and D 1587-83 <br /> for thin-walled tube sampling of soils. The blows to drive the <br /> sampler each six inch interval will be recorded on the boring <br /> +- log. The sampler will be removed from the boring and opened to <br /> reveal the brass tubes. The bottom tube will be capped with <br /> aluminum foil and plastic end caps, taped and labeled with the <br /> t. following information: date, time, project ID, sample ID, name of <br /> sampler and type of analysis. This sample will be immediately <br /> placed into a cooler containing dry ice or "blue ice" . The <br /> samples will be delivered to a state certified laboratory under <br /> chain-of-custody protocol with 48 hours of sampling, when <br /> possible. <br /> Soil in the uppermost brass tube will be described for texture, <br /> color, consistency, moisture content, presence of contamination <br /> and any other distinguishing characteristics. Soil properties <br /> will also be noted in the middle brass tube and from the sampler <br /> shoe. These field observations will be noted on a log prepared <br /> for each boring/well. <br /> i' During sampling, latex gloves will be worn to prevent cross- <br /> contamination with other samples. The disposable gloves will be <br /> discarded after collecting samples from each 18-inch sample <br /> +� drive. <br /> 4 <br />