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K <br /> { <br /> ATC Associates Inc. <br /> Quality Assurance/Quality Control Plan ' <br /> Revised 1999 <br /> sj <br /> or frozen chemical ice for delivery to a state certified laboratory: Sample identification, storage <br /> and transportation will be conducted as outlined in the prlvious'section. ` <br /> f <br /> i <br /> 11.3 Sampling from Soil Piles or Shallow Soil Pits <br /> Soil samples will be collected and transported from excavated material in the manner described <br /> in the previous section, however, a backhoe will not ble utilized. If composite samples are k <br /> collected, four brass cylinders will be collected for ev'iery 50 cubic yards of material to be <br /> sampled unless otherwise specified by the lead regulatory agency. The samples will be <br /> I <br /> composited by the state certified laboratory personnel prior to testing. <br /> 12.0 GROUNDWATER SAMPLING PROTOCOL <br /> Prior to arriving at the sampling site, all sampling equipment will be washed with nonphosphate <br /> detergent (Alconox or equivalent), and rinsed twice with tap water, once with acetone, and once with <br /> deionized water. this procedure will be carried out on-site before;sam lin of other monitoring wells if <br /> p p g g <br /> j <br /> more than one well is to be sampled with the sample sampling device. I <br /> Immediately prior to sampling, the depth to water (DTV) in the well will be recorded. The thickness <br /> of product on top of the groundwater, if present, will be measured using an interface probe. The <br /> I <br /> procedure for monitoring is presented in Section 9.0 (Groundwater MonitoringProtocol). <br /> I <br /> i <br /> If free product is detected, analysis of groundwater at the interface for dissolved product will not be <br /> li <br /> conducted. A product sample will be collected for source identification. If all free product cannot be <br /> removed, an interval specific sampling device may be utilized to collect a sample from below the zone <br /> of free product. Before collecting groundwater samples from each well, the well will be purged until <br /> indicator parameters (temperature, conductivity, and pH) stabilize. This will entail the removal of at <br /> I� <br /> least four well casing volumes by bailing or pumping. The criteria for determining well casing volumes <br /> I <br /> E 1 n/ <br /> 4 A2 I <br /> k i 1 <br /> t {iy <br /> �� 1 <br />