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�va _ ; W- wolmm <br /> to <br /> PIN <br /> T <br /> 1 <br /> H� <br /> WaterWork <br /> r.n Somal gampiina 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 /> ,w. <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 <br /> procedure will be conducted on <br /> + site on all sampling equipment between each sample interval. <br /> r-= Soil samples will be obtained using a California modified split- <br /> is <br /> spoon sampler ccntaining three six inch long, two inch diameter <br /> brass tubes. The sampler will be driven 18 inches ahead of the <br /> hollow stem auger with a 140 pound drop hammer falling 30 inches. <br /> The blows to drive the sampler each six inch interval will be <br /> ' recorded on the boring log. The saiaeler will be removed from the <br /> boring and opened to reveal the bra::s tubes. The bottom tube <br /> will be capped with aluminum foil and plastic end caps, taped and <br /> i:.. labeled with the following information: date, time, project ID, <br /> sample ID, name of sampler and type of analysis. This sample <br /> will be immediately placed into a cooler containing dry ice or <br /> "blue ice". The samples will be delivered to a state certified <br /> L' laboratory under chain of custody protocol with 48 hours of <br /> sampling, when 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 1a log prepared <br /> for each boring/well. Aytis <br /> 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 />