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(freezing, fast runoff, presence of free phase product, etc.) are present, then field parameters may not <br /> be collected as these conditions can be detrimental to the field parameter unit. <br /> C. Purging <br /> Each of the groundwater monitoring wells will be purged by pumping 3-casing volumes prior to <br /> sample collection to ensure that an accurate representation of the groundwater is obtained. All purge <br /> water will be collected in a clean 5-gallon poly bucket and evaluated for contamination. If the purge <br /> water is believed to be impacted by hydrocarbons, it will be properly contained and disposed of at an <br /> approved and permitted disposal facility. <br /> If during the purge process, water levels drop or a well does not recharge (runs dry), personnel will <br /> continue on to the subsequent wells for purging and sampling and revisit the well at the end of the day. <br /> If the well has still not recharged at that time,the well will be allowed to recharge for a 24-hour period <br /> and resampled the following day without purging. <br /> D. Sample Collection <br /> Samples will be collected from the polyethylene tubing connected to the submersible pump from each <br /> of the monitoring wells. <br /> Containers requiring zero headspace will be checked to ensure that no bubbles are present exceeding <br /> the laboratory specifications. If a bubble is observed, the sample will be retained and remain within <br /> the container as it contains an acid preservation. However, a second container will be filled to fulfill <br /> the laboratory container requirements. Both samples will be submitted to the lab for proper <br /> management. <br /> Vl. Sampling Analysis <br /> Each monitoring well sample will be submitted for the following analysis; <br /> • Diesel Range Organics(DRO) Method 8015C <br /> • Gasoline Range Organics(GRO) Method 8015D <br /> • Poly-Aromatic Hydrocarbons (PAH) Method 846 8270D <br /> • Benzene, Toluene, Ethylbenzene, Total Xylenes(BTEX) Method 8260C <br /> Additional analysis will be added as requested by regulatory agencies or as needed to evaluate other parameters <br /> of water quality. <br /> Samples will be submitted to Pace Analytical Laboratories (Pace). Analysis will be requested on a standard <br /> five (5) business day turn, unless rush analysis is required, at which time 24-hour reporting will be requested <br /> from the lab. Should Pace be unable to meet the demands of the project, an alternate NELAP lab will be <br /> identified and approved by personnel overseeing this project and the applicable regulatory agency(ies) before <br /> utilization. <br /> 5 <br />