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i <br /> sampling, latex gloves will be. worn to prevent cross <br /> contamination with other samples. One pair of disposable <br /> ;3 <br /> gloves will be dedicated to each sample collected. <br /> Once the sample is collected, each end of the cylinder will <br /> be sealed with aluminum foil or teflon tape and then capped <br /> with a polyethylene lid, taped, and labeled. The sample <br /> will then be individually sealed in a ziplock bag and <br /> 14 immediately placed in an ice chest containing dry ice or <br /> frozen chemical ice for delivery to a state certified <br /> laboratory. Sample identification, storage and <br /> transportation will be conducted as outlined in the previous <br /> 4 section. <br /> 11.5 Sampling from Soil Piles or Shallow Soil Pits <br /> Soil samples will be collected and transported from <br /> excavated material in the manner described in the previous <br /> section, however, a backhoe will not be utilized. if <br /> composite samples are collected, four brass cylinders will <br /> be collected for every 50 cubic yards of material to be <br /> sampled unless otherwise specified by the lead regulatory <br /> x agency. The samples will be composited by the state <br /> i ; certified analytical laboratory personnel prior to testing. <br /> t , 12.0 Groundwater Sampling Protocol <br /> r ' Prior to arriving at the sampling site, all sampling <br /> equipment will be washed with laboratory grade detergent, <br /> p and rinsed twice with tap water, once with acetone, and once <br /> with deionized water. This procedure will be carried out <br /> on-site before sampling of other monitoring wells, if more <br /> f } than one well is to be sampled with the same sampling <br /> device. <br /> Immediately prior to sampling, the depth to water (DTW) in <br /> the well will be recorded. The thickness of product on top <br /> of the groundwater, if present, will be measured using an <br /> interface probe. The procedure for monitoring is presented <br /> t in Section 9.0 (Groundwater Monitoring Protocol). <br /> If .free product is detected, analysis of groundwater at the <br /> ! } interface for dissolved product will not be conducted. A <br /> product sample will be collected for source identification. <br /> If all free product cannot be removed, an interval specific <br /> sampling device may be utilized to collect: a sample from <br /> below the zone of free product. Before collecting at least <br /> two groundwater samples from each well, the well will be <br /> 1 purged until indicator parameters (temperature, conductivity <br /> and pH) stabilize. This will entail the removal of at least <br /> four well casing volumes by bailing or pumping. The <br /> criteria for determining well casing volumes and temporary <br /> storage of purged water is outlined in Section 10.0, (Well <br /> Development Protocol). The indicator parameter, measurements <br /> will be taken both before and after purging of each well <br />