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a� <br /> V <br /> Teflon®-lined plastic lids. The soil samples will be labeled with a unique sample number, <br /> bw <br /> date, time of collection, initials of collector, Terranext project number and any other <br /> pertinent information. Each soil sample will then be placed in an insulated chest containing <br /> ice and delivered (along with chain-of-custody documentation) to Quanterra Environmental <br /> Services in West Sacramento, California, for analysis on a standard three week turnaround <br /> basis. It is anticipated that a maximum of two soil samples will be analyzed from each of <br /> V the soil borings. The selection of samples for analysis will be based on field observations. <br /> y The cores and soil cuttings from all boreholes will be examined by an on-site geologist or <br /> engineer and logged in accordance with the procedures of the American Society for Testing <br /> INO Materials D 2488. A portion of the sample from each 5-foot interval will also be screened in <br /> the field using a photoionization detector (PID). Approximately 50 grams of soil will be <br /> 600 placed in a plastic bag and allowed to sit, preferably in the sun, for at least 15 minutes. The <br /> plastic bag will then be opened just enough to place the probe of the PID into the headspace <br /> and a measurement made. PID readings will be recorded on the boring logs. <br /> ., 4.3 HydropunchT" Sampling <br /> �+ If ground water is encountered during drilling, an attempt will be made to collect a ground <br /> water sample using a HydropunchT' sampling device. The Hydropunch'''' sampling probe will <br /> �00 be hydraulically advanced approximately 3 feet beneath the top of the water-bearing zone. <br /> The Hydropunch' probe will then be pulled back 4 feet to expose approximately 3 feet of <br /> screened interval within the water-bearing zone and approximately 1 foot of screened interval <br /> above the water-bearing zone. After the Hydropunch' probe is pulled back, approximately <br /> 30 minutes will be allowed for ground water to accumulate. A bottom-filling stainless steel <br /> or Teflon® bailer will be lowered into the Hydropunch'`'' probe and a reconnaissance ground <br /> water sample will be collected from near the top of the water surface. Water samples will be <br /> placed in laboratory supplied bottles containing the appropriate preservative, if applicable. <br /> V <br /> 809-001.wkp/03-06-97/u/keydata/workplan 7 <br /> V <br /> TermNext <br /> rr <br />