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-------- .. .. ----- <br /> k� <br /> r. <br /> WaterWork <br /> Groundwater. Sampling Protocol <br /> Groundwater monitoring wells will be developed within 48 hours of <br /> completion. Approximately 10 times the volume of water in the <br /> casing will be withdrawn, if possible. If the aquifer is slow to <br /> recharge, development will continue unti). recharge is too slow to <br /> practically continue. All withdrawn groundwater will be stored <br /> on-site in covered 55 gallon waste drums, unless permission is <br /> granted by the appropriate regulatory agencies to discharge the <br /> pumped groundwater to the ground surface. <br /> F-K <br /> Prior to arriving at the site, all sampling equipment will be ' <br /> washed with laboratory grade detergent, and rinsed twice with tap <br /> water and once with deionized water. The sample washing <br /> " procedure will be carried out on-site before sampling other <br /> monitoring wells in cases where more than one monitoring well is <br /> to be sampled. <br /> Immediately prior to sampling, the depth to water (DTW) level in <br /> the well will be recorded. The thickness of product on top of <br /> theg roundwater, if present, will be measured using an interface <br /> probe. The Procedure for conducting these monitorin <br /> s are <br /> w, presented in the Groundwater Monitoring Protocol attachment. <br /> Approximately four times the .volume of water in the well casing <br /> will be withdrawn by pumping or hand bailing immediately prior to <br /> sampling. If the aquifer is slow to recharge, a smaller amount <br /> of groundwater will be withdrawn in order to leave a sufficient <br /> volume of water in the well to sample. <br /> j m The grcundwater sample will be collected by lowering a Teflon <br /> " sampler into the monitoring well and immediately transferring the <br /> sample into a 40 ml volatile organic analysis (VOA) container. <br /> The sample container will be filled completely so that no head <br /> space remains in the container. Duplicate samples will be <br /> collected from each well sampled. <br /> Immediately following sample collection, the samples will be <br /> labeled and stored in an ice chest containing "blue ice" . The <br /> labels will contain the following information: date, time, <br /> project ID, sample ID, name of sampler and type of analysis. All <br /> samples will be transported under chain of custody protocol to a <br /> state certified laboratory. <br /> To reduce the potential of cross-contamination, the Swells will be ; <br /> sampled in order of increasing contamination based on previous <br /> laboratory analysis, if available, or by field evidence of <br /> visual/olfactory indications of contamination. In addition, <br /> latex glover worn by the sampler and the nylon cord used to lower <br /> the teflon sampler will be replaced between each well sampling, <br />