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1 <br /> L j <br /> containers with specific preservative and post collection preservation methods should be used as <br /> described in Table 1 of the Groundwater Monitoring Plan. The filled sample containers should <br /> be immediately placed in a chilled cooler awaiting delivery to the analytical laboratory. All <br /> samples should be handled according to Chain of Custody SOP. <br /> All samples will be-delivered to the laboratory as soon as possible. If possible, samples will be <br /> shipped on the same day as they are collected. If samples must be retained due to weekend <br /> sampling (Friday through Sunday), the lab shall be notified as to the time sensitive nature of the <br /> samples. <br /> Filtering of samples for dissolved metals analysis will be conducted in the field using a <br /> z disposable 0.45 micron (µm) in-line filters. Field filtering will be conducted by either: <br /> Sampling by pump: <br /> • Screwing the disposable 0.45 pm filter into the discharge sampling line and sampling directly, <br /> for the filter after two filter volumes have been run through it. <br /> Sampling by bailer: <br /> • Usinga Teflon connector to attach the in-line - <br /> m me filter to the bottom emptying device of the . <br /> bailer, allow gravity to feed the water through the filter. Sampling will begin after two filter <br /> volumes have passed through the filter. <br /> PRECAUTIONS <br /> • Refer to the HSP for appropriate.PPE. - - <br /> • Sampling wells in order of increasing chemical concentrations (known or anticipated) is <br /> P ) <br /> preferred. <br /> REFERENCES <br /> t • Gass, Tylor E.; Barker, James F.; Dickhout, R.; Fyfe, J. S.; 1991, Test Results of the <br /> Grundfos Ground-water Sampling Pump,From: "Proceedings of the Fifth National <br /> Symposium on Aquifer Restoration and Ground Water Monitoring" <br /> • McAlary,T. A. and Barker, J. F.; 1987, Volatilization Losses of Organics During Ground <br /> g g <br /> Water Sampling From Low Permeability Materials In "Ground Water Monitoring <br /> t Review" Fall 1987. <br /> • Nielsen, David M., 1991. Practical Handbook of Groundwater Monitoring, Lewis <br /> Publishers. Chelsea, MI. <br /> gw sampling.SOP Page 4 of 5 February 2005. <br /> Tri <br />