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i <br /> a <br /> Ramcon Standard Procedures <br /> Standard Procedure 2 Drilling and Sampling Soil Borings <br /> (OVA, photovac TIP, HnU, Foxboro OVM-FID, or Gastechtor calibrated in accordance with manufacturer's <br /> recommendations)is zeroed in ambient air and the sample port is inserted into a new one-gallon plastic zip- <br /> lock bag. The reading is recorded, and a representative soil sample is extruded from the sample sleeve or <br /> split-barrel sampler into the bag. The sample is gently crumbled and agitated, and allowed to outgas for <br /> approximately one minute. The sample port is re-introduced into the bag and the concentration, if any is <br /> recorded. The baseline reading is subtracted from the sample reading, and the sum is recorded on the boring; <br /> log for that sample interval. Sample outgassing time may be varied, but will remain constant for all samples <br /> collected during that drilling event. <br /> H:\WPOATA\MIKE\PROCEED\2 BORE Page 3 of 3 <br />