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Oscar Ilacad ' <br /> Carnation <br /> Monitoring Well Details <br /> Page; 1 <br /> KWITORING WELL ODNSIRUM(W/DEMnPMU <br /> A ground water monitoring well will be completed to a depth of W feet <br /> below the ground water table or 5 feet into any clay layer. The wall will be <br /> constructed of schedule 40, 4" PVC pipe, factory perforated with a minimum of <br /> a 0.020 inch slotted screen which will extend 5 feet below the top of the <br /> upper zone of saturation, unless site conditions require otherwise. <br /> The hole will be finished with a Christy Box grouted with a slope to <br /> about � inch above the existing grade. The well will have a surface seal <br /> extending downward at least four feet from the ground surface within the annu- <br /> lar space, will have a PVC cap to prevent surface contamination, and will be <br /> used during monitoring well construction. After installation, the well will be <br /> developed by pumping or -by- bailing and swabbing. <br /> KWMRING WELL SANE'L.ING <br /> Following an initial water level measurement, the ground water monitoring <br /> well will be sampled using a clean teflon bailer. The bailer will be usedt <br /> first to obtain a sample from the surface of the water in each well prior to <br /> purging. If a layer of product is detected in the bailer, a sample of the <br /> floating product will be collected and analyzed. If no visable product exists <br /> in the well, three to ten well volumes of water will be removed by bailing or <br /> pumping before sample will be collected using a teflon bailer which has been <br /> steam cleaned with distilled water. <br /> All water samples will be sealed in laboratory cleaned glass containers <br /> with teflon lined lids, labeled, and immediately placed in iced storage. A <br /> Chain-of-Custody form will be initiated by the sampler and will accompany the <br /> sample to the analytical laboratory. <br /> `\ `N <br />