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� 1 <br /> r _ <br /> Rig <br />�x <br /> sampling, latex gloves will be worn to prevent erose <br /> contamination with other samples. one pair of disposable <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 beg and <br /> immediately placed in. as ire 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 /> section. <br /> 11.3 Sampling from Soil Piles or Shallow Soil Pits <br /> Soil samples will be collected and. transported from <br /> excavatod material in the ;Wanner 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 c=ubic yards of material to be <br /> sampled unless otherwise specified by the lead regulatory <br /> agency. The samples will be composited by the state <br /> certified analytical laboratory personnel prior to testing. <br /> 'R 12.0 Groundwater Sampling Protocol <br /> Prior to arriving at the sampling site, all sampling <br /> equipment will be washed with laboratory grade detergent, <br /> 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 /> 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 /> ;n 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 ::ollected 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 /> - 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 />