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Artesian Environmental Consultants, Inc. <br /> Standard Operating Procedures <br /> COLLECTING ORGANIC VAPOR DATA FROM SOIL SAMPLES <br /> Soil samples from drill cuttings, soil piles or tank excavations are placed with minimal <br /> disturbance into pre-cleaned standard soil sample collection jai The jars aie filled to <br /> approximately one half full The soil samples are broken up to provided sufficient surface <br /> area to allow for volatilization Aluminum foil is placed over the mouth of the jai The jai <br /> mouth is then capped with the lid <br /> The jars are then placed out of direct sunlight and allowed to sit undistui bed foi a minimum <br /> of twenty minutes, allowing time for the air in the headspace and soil to equilibrate <br /> An organic vapor analyzer (OVA) or photoronization detector (PID) is to be calibi ated and <br /> the batteries checked pnor to each use After the headspace within the sample jai and soil <br /> vapor has equilibrated, the probe of the organic vapor analyzer of photoionization detector <br /> should be inserted into the jar, puncturing the aluminum foil The presence of any organic <br /> vapor detected should be measured and recorded in parts per million (ppm) <br /> The samples used for collecting organic vapor data are never submitted for analytical <br /> testing <br />