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Title: GCC Rio Grande Pueblo Plant Groundwater Control Number: Revision Date: Page 4 of 6 <br /> Monitoring Well Compliance Sampling PUE.EN.P.003.01 2/19/2020 <br /> 9) If well goes dry before field parameter stabilization or 5 WBV, recap and secure well and <br /> allow well to recover for up to 24 hours. Monitor DTW for adequate recovery. If recovered <br /> within 24 hours(same or next day),no further purging is required so move to step 10 below. <br /> If the well does not recover within 24 hours,this monitoring event shall be designated"dry <br /> following purge"on the Groundwater Monitoring Record. No collection of a sample for lab <br /> analysis is possible,however the field water quality parameters collected during the purge <br /> shall be retained on the Groundwater Monitoring Record. Retrieve and decontaminate <br /> WLI,secure wellhead and rig down all monitoring equipment. <br /> 10) Collect final field parameters and sample <br /> a) When stabilization criteria are met or 5 WBV have been purged, log one sample for all <br /> default parameters on the multi-parameter water quality meter naming the log for the <br /> appropriate monitoring well ID (i.e. MW-6). Download and email the export data file at <br /> completion of daily sampling activities to the GCC Environmental Engineer. <br /> b) There are 3 individual bottles in the "GW-Compliance" bottle set to be filled. Label all <br /> sample bottles by completing labels with indelible ink pen or marker prior to filling. <br /> Alternatively, the labeling may be made by writing directly on the bottles. Information <br /> shall include: <br /> • Site or project name (GCC Rio Grande) <br /> • Sample ID <br /> • Sample collection date and time <br /> • Sampler's initials <br /> c) Bail to fill at least % the 1-gallon new, disposable poly cubitainer, which is the sample <br /> transfer container to be used for this groundwater bailer sample collection methodology. <br /> d) Load the 3/8" peristaltic tubing through the peristaltic pump head unit per <br /> manufacturer's instructions, keeping both tubing ends from touching any contaminating <br /> materials. <br /> e) Insert one end of the 3/8"peristaltic pump tubing into the cubitainer,keeping this suction <br /> end submerged. <br /> f) Attach the inlet side of the 0.45 µm filter(observe flow arrow on filter)to the other end <br /> of the peristaltic pump tubing. <br /> g) Operate the peristaltic pump per manufacturer's instructions producing water to flush air <br /> from the 0.45 µm filter and fill with sample water until the filter is producing water. <br /> Confirm there are no visible particulates flowing in the water from the filter outlet. <br /> h) Fill the 125 ml poly preserved bottle to the bottleneck and cap immediately. There is acid <br /> preservative in this container. Do not over-fill or spill the preservative — if this does <br /> happen then take a replacement 125 ml poly preserved bottle from a spare bottle set and <br /> repeat fill procedure. <br /> i) Fill the 250 ml poly unpreserved bottle from the 0.45 µm filter outlet to the bottleneck <br /> and cap immediately. <br /> j) Stop the peristaltic pump and remove the tubing from the cubitainer. <br /> k) Fill the 500 ml poly unpreserved bottle to the neck directly from the cubitainer and <br /> immediately cap. <br />